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authorGlenn L McGrath <bug1@ihug.co.nz>2001-07-13 18:35:24 +0000
committerGlenn L McGrath <bug1@ihug.co.nz>2001-07-13 18:35:24 +0000
commitccd65c9be667d504f67e8a92bb6ab41253374ab9 (patch)
tree022e57d140ff4e4311847e83468ab2841002013f
parent3d46224b7866089a62a992333681c9a81030bb0b (diff)
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Total rewrite, uses hash tables for speed and low memory use.
Diffstat
-rw-r--r--archival/dpkg.c1927
-rw-r--r--dpkg.c1927
2 files changed, 2496 insertions, 1358 deletions
diff --git a/archival/dpkg.c b/archival/dpkg.c
index 020a68a90..ffe746703 100644
--- a/archival/dpkg.c
+++ b/archival/dpkg.c
@@ -1,854 +1,1423 @@
1#include <ctype.h> 1/*
2#include <dirent.h> 2 * Mini dpkg implementation for busybox.
3 * This is not meant as a replacemnt for dpkg
4 *
5 * Copyright (C) 2001 by Glenn McGrath
6 *
7 * Started life as a busybox implementation of udpkg
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Library General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 */
23
24/*
25 * Known difference between busybox dpkg and the official dpkg that i dont
26 * consider important, its worth keeping a note of differences anyway, just to
27 * make it easier to maintain.
28 * - The first value for the Confflile: field isnt placed on a new line.
29 * - The <package>.control file is extracted and kept in the info dir.
30 * - When installing a package the Status: field is placed at the end of the
31 * section, rather than just after the Package: field.
32 * - Packages with previously unknown status are inserted at the begining of
33 * the status file
34 *
35 * Bugs that need to be fixed
36 * - (unknown, please let me know when you find any)
37 *
38 */
39
3#include <getopt.h> 40#include <getopt.h>
4#include <stdio.h>
5#include <string.h>
6#include <stdlib.h> 41#include <stdlib.h>
7#include <search.h> 42#include <string.h>
8#include <errno.h>
9#include <fcntl.h>
10#include <unistd.h> 43#include <unistd.h>
11#include <utime.h>
12#include <sys/types.h>
13#include <sys/stat.h>
14
15#include "busybox.h" 44#include "busybox.h"
16 45
17#define DEPENDSMAX 64 /* maximum number of depends we can handle */ 46/* NOTE: If you vary HASH_PRIME sizes be aware,
18 47 * 1) Tweaking these will have a big effect on how much memory this program uses.
19/* Should we do full dependency checking? */ 48 * 2) For computational efficiency these hash tables should be at least 20%
20//#define DODEPENDS 0 49 * larger than the maximum number of elements stored in it.
21 50 * 3) All _HASH_PRIME's must be a prime number or chaos is assured, if your looking
22/* Should we do debugging? */ 51 * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt
23//#define DODEBUG 0 52 * 4) If you go bigger than 15 bits you may get into trouble (untested) as its
24 53 * sometimes cast to an unsigned int, if you go to 16 bit you will overlap
25#ifdef DODEBUG 54 * int's and chaos is assured, 16381 is the max prime for 14 bit field
26#define SYSTEM(x) do_system(x) 55 */
27#define DPRINTF(fmt,args...) fprintf(stderr, fmt, ##args)
28#else
29#define SYSTEM(x) system(x)
30#define DPRINTF(fmt,args...) /* nothing */
31#endif
32
33/* from dpkg-deb.c */
34
35static const char statusfile[] = "/var/lib/dpkg/status.udeb";
36static const char new_statusfile[] = "/var/lib/dpkg/status.udeb.new";
37static const char bak_statusfile[] = "/var/lib/dpkg/status.udeb.bak";
38
39static const char infodir[] = "/var/lib/dpkg/info/";
40static const char udpkg_quiet[] = "UDPKG_QUIET";
41
42//static const int status_want_unknown = 1;
43static const int state_want_install = 2;
44//static const int state_want_hold = 3;
45//static const int state_want_deinstall = 4;
46//static const int state_want_purge = 5;
47
48static const int state_flag_ok = 1;
49//static const int state_flag_reinstreq = 2;
50//static const int state_flag_hold = 3;
51//static const int state_flag_holdreinstreq = 4;
52
53//static const int state_statusnoninstalled = 1;
54static const int state_status_unpacked = 2;
55static const int state_status_halfconfigured = 3;
56static const int state_status_installed = 4;
57static const int state_status_halfinstalled = 5;
58//static const int state_statusconfigfiles = 6;
59//static const int state_statuspostinstfailed = 7;
60//static const int state_statusremovalfailed = 8;
61
62static const char *state_words_want[] = { "unknown", "install", "hold", "deinstall", "purge", 0 };
63static const char *state_words_flag[] = { "ok", "reinstreq", "hold", "hold-reinstreq", 0 };
64static const char *state_words_status[] = { "not-installed", "unpacked", "half-configured", "installed",
65 "half-installed", "config-files", "post-inst-failed", "removal-failed", 0 };
66
67static const int color_white = 0;
68static const int color_grey = 1;
69static const int color_black = 2;
70
71/* data structures */
72typedef struct package_s {
73 char *filename;
74 char *package;
75 unsigned char state_want;
76 unsigned char state_flag;
77 unsigned char state_status;
78 char *depends;
79 char *provides;
80 char *description;
81 char *priority;
82 char *section;
83 char *installed_size;
84 char *maintainer;
85 char *source;
86 char *version;
87 char *pre_depends;
88 char *replaces;
89 char *recommends;
90 char *suggests;
91 char *conflicts;
92 char *conffiles;
93 char *long_description;
94 char *architecture;
95 char *md5sum;
96 int installer_menu_item;
97 char color; /* for topo-sort */
98 struct package_s *requiredfor[DEPENDSMAX];
99 unsigned short requiredcount;
100 struct package_s *next;
101} package_t;
102
103#ifdef DODEBUG
104static int do_system(const char *cmd)
105{
106 DPRINTF("cmd is %s\n", cmd);
107 return system(cmd);
108}
109#else
110#define do_system(cmd) system(cmd)
111#endif
112 56
113static int package_compare(const void *p1, const void *p2) 57/* NAME_HASH_PRIME, Stores package names and versions,
114{ 58 * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME,
115 return strcmp(((package_t *)p1)->package, 59 * as there a lot of duplicate version numbers */
116 ((package_t *)p2)->package); 60#define NAME_HASH_PRIME 16381
117} 61char *name_hashtable[NAME_HASH_PRIME + 1];
62
63/* PACKAGE_HASH_PRIME, Maximum number of unique packages,
64 * It must not be smaller than STATUS_HASH_PRIME,
65 * Currently only packages from status_hashtable are stored in here, but in
66 * future this may be used to store packages not only from a status file,
67 * but an available_hashtable, and even multiple packages files.
68 * Package can be stored more than once if they have different versions.
69 * e.g. The same package may have different versions in the status file
70 * and available file */
71#define PACKAGE_HASH_PRIME 10007
72typedef struct edge_s {
73 unsigned int operator:3;
74 unsigned int type:4;
75 unsigned int name:14;
76 unsigned int version:14;
77} edge_t;
78
79typedef struct common_node_s {
80 unsigned int name:14;
81 unsigned int version:14;
82 unsigned int num_of_edges:14;
83 edge_t **edge;
84} common_node_t;
85common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
86
87/* Currently it doesnt store packages that have state-status of not-installed
88 * So it only really has to be the size of the maximum number of packages
89 * likely to be installed at any one time, so there is a bit of leaway here */
90#define STATUS_HASH_PRIME 8191
91typedef struct status_node_s {
92 unsigned int package:14; /* has to fit PACKAGE_HASH_PRIME */
93 unsigned int status:14; /* has to fit STATUS_HASH_PRIME */
94} status_node_t;
95status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
96
97/* Even numbers are for 'extras', like ored dependecies or null */
98enum edge_type_e {
99 EDGE_NULL = 0,
100 EDGE_PRE_DEPENDS = 1,
101 EDGE_OR_PRE_DEPENDS = 2,
102 EDGE_DEPENDS = 3,
103 EDGE_OR_DEPENDS = 4,
104 EDGE_REPLACES = 5,
105 EDGE_PROVIDES = 7,
106 EDGE_CONFLICTS = 9,
107 EDGE_SUGGESTS = 11,
108 EDGE_RECOMMENDS = 13,
109 EDGE_ENHANCES = 15
110};
111enum operator_e {
112 VER_NULL = 0,
113 VER_EQUAL = 1,
114 VER_LESS = 2,
115 VER_LESS_EQUAL = 3,
116 VER_MORE = 4,
117 VER_MORE_EQUAL = 5,
118 VER_ANY = 6
119};
120
121enum dpkg_opt_e {
122 dpkg_opt_purge = 1,
123 dpkg_opt_remove = 2,
124 dpkg_opt_unpack = 4,
125 dpkg_opt_configure = 8,
126 dpkg_opt_install = 16,
127 dpkg_opt_package_name = 32,
128 dpkg_opt_filename = 64,
129 dpkg_opt_list_installed = 128,
130 dpkg_opt_force_ignore_depends = 256
131};
132
133typedef struct deb_file_s {
134 char *control_file;
135 char *filename;
136 unsigned int package:14;
137} deb_file_t;
118 138
119#ifdef DODEPENDS
120 139
121static char **depends_split(const char *dependsstr) 140void make_hash(const char *key, unsigned int *start, unsigned int *decrement, const int hash_prime)
122{ 141{
123 static char *dependsvec[DEPENDSMAX]; 142 unsigned long int hash_num = key[0];
124 char *p; 143 int len = strlen(key);
125 int i = 0; 144 int i;
126 145
127 dependsvec[0] = 0; 146 /* Maybe i should have uses a "proper" hashing algorithm here instead
128 if (dependsstr == 0) { 147 * of making one up myself, seems to be working ok though. */
129 goto end; 148 for(i = 1; i < len; i++) {
149 /* shifts the ascii based value and adds it to previous value
150 * shift amount is mod 24 because long int is 32 bit and data
151 * to be shifted is 8, dont want to shift data to where it has
152 * no effect*/
153 hash_num += ((key[i] + key[i-1]) << ((key[i] * i) % 24));
130 } 154 }
155 *start = (unsigned int) hash_num % hash_prime;
156 *decrement = (unsigned int) 1 + (hash_num % (hash_prime - 1));
157}
131 158
132 p = xstrdup(dependsstr); 159/* this adds the key to the hash table */
133 while (*p != 0 && *p != '\n') { 160int search_name_hashtable(const char *key)
134 if (*p != ' ') { 161{
135 if (*p == ',') { 162 unsigned int probe_address = 0;
136 *p = 0; 163 unsigned int probe_decrement = 0;
137 dependsvec[++i] = 0; 164
138 } else { 165 make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME);
139 if (dependsvec[i] == 0) { 166 while(name_hashtable[probe_address] != NULL) {
140 dependsvec[i] = p; 167 if (strcmp(name_hashtable[probe_address], key) == 0) {
141 } 168 return(probe_address);
142 }
143 } else { 169 } else {
144 *p = 0; /* eat the space... */ 170 probe_address -= probe_decrement;
171 if ((int)probe_address < 0) {
172 probe_address += NAME_HASH_PRIME;
173 }
145 } 174 }
146 p++;
147 } 175 }
148 *p = 0; 176 name_hashtable[probe_address] = xstrdup(key);
149 177
150end: 178 return(probe_address);
151 dependsvec[i+1] = 0;
152 return dependsvec;
153} 179}
154 180
155/* Topological sort algorithm: 181/* this DOESNT add the key to the hashtable
156 * ordered is the output list, pkgs is the dependency graph, pkg is 182 * TODO make it consistent with search_name_hashtable
157 * the current node
158 *
159 * recursively add all the adjacent nodes to the ordered list, marking
160 * each one as visited along the way
161 *
162 * yes, this algorithm looks a bit odd when all the params have the
163 * same type :-)
164 */ 183 */
165static void depends_sort_visit(package_t **ordered, package_t *pkgs, 184unsigned int search_status_hashtable(const char *key)
166 package_t *pkg)
167{ 185{
168 unsigned short i; 186 unsigned int probe_address = 0;
169 187 unsigned int probe_decrement = 0;
170 /* mark node as processing */ 188
171 pkg->color = color_grey; 189 make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME);
172 190 while(status_hashtable[probe_address] != NULL) {
173 /* visit each not-yet-visited node */ 191 if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) {
174 for (i = 0; i < pkg->requiredcount; i++) 192 break;
175 if (pkg->requiredfor[i]->color == color_white) 193 } else {
176 depends_sort_visit(ordered, pkgs, pkg->requiredfor[i]); 194 probe_address -= probe_decrement;
177 195 if ((int)probe_address < 0) {
178#if 0 196 probe_address += STATUS_HASH_PRIME;
179 /* add it to the list */ 197 }
180 newnode = (struct package_t *)xmalloc(sizeof(struct package_t)); 198 }
181 /* make a shallow copy */ 199 }
182 *newnode = *pkg; 200 return(probe_address);
183 newnode->next = *ordered;
184 *ordered = newnode;
185#endif
186
187 pkg->next = *ordered;
188 *ordered = pkg;
189
190 /* mark node as done */
191 pkg->color = color_black;
192} 201}
193 202
194static package_t *depends_sort(package_t *pkgs) 203/* Need to rethink version comparison, maybe the official dpkg has something i can use ? */
204int version_compare_part(const char *version1, const char *version2)
195{ 205{
196 /* TODO: it needs to break cycles in the to-be-installed package 206 int upstream_len1 = 0;
197 * graph... */ 207 int upstream_len2 = 0;
198 package_t *ordered = NULL; 208 char *name1_char;
199 package_t *pkg; 209 char *name2_char;
200 210 int len1 = 0;
201 for (pkg = pkgs; pkg != 0; pkg = pkg->next) { 211 int len2 = 0;
202 pkg->color = color_white; 212 int tmp_int;
213 int ver_num1;
214 int ver_num2;
215
216 if (version1 == NULL) {
217 version1 = xstrdup("");
218 }
219 if (version2 != NULL) {
220 version2 = xstrdup("");
203 } 221 }
204 for (pkg = pkgs; pkg != 0; pkg = pkg->next) { 222 upstream_len1 = strlen(version1);
205 if (pkg->color == color_white) { 223 upstream_len2 = strlen(version2);
206 depends_sort_visit(&ordered, pkgs, pkg); 224
225 while ((len1 < upstream_len1) || (len2 < upstream_len2)) {
226 /* Compare non-digit section */
227 tmp_int = strcspn(&version1[len1], "0123456789");
228 name1_char = xstrndup(&version1[len1], tmp_int);
229 len1 += tmp_int;
230 tmp_int = strcspn(&version2[len2], "0123456789");
231 name2_char = xstrndup(&version2[len2], tmp_int);
232 len2 += tmp_int;
233 tmp_int = strcmp(name1_char, name2_char);
234 free(name1_char);
235 free(name2_char);
236 if (tmp_int != 0) {
237 return(tmp_int);
238 }
239
240 /* Compare digits */
241 tmp_int = strspn(&version1[len1], "0123456789");
242 name1_char = xstrndup(&version1[len1], tmp_int);
243 len1 += tmp_int;
244 tmp_int = strspn(&version2[len2], "0123456789");
245 name2_char = xstrndup(&version2[len2], tmp_int);
246 len2 += tmp_int;
247 ver_num1 = atoi(name1_char);
248 ver_num2 = atoi(name2_char);
249 free(name1_char);
250 free(name2_char);
251 if (ver_num1 < ver_num2) {
252 return(-1);
207 } 253 }
254 else if (ver_num1 > ver_num2) {
255 return(1);
256 }
257 }
258 return(0);
259}
260
261/* if ver1 < ver2 return -1,
262 * if ver1 = ver2 return 0,
263 * if ver1 > ver2 return 1,
264 */
265int version_compare(const unsigned int ver1, const unsigned int ver2)
266{
267 char *ch_ver1 = name_hashtable[ver1];
268 char *ch_ver2 = name_hashtable[ver2];
269
270 char epoch1, epoch2;
271 char *deb_ver1, *deb_ver2;
272 char *ver1_ptr, *ver2_ptr;
273 char *upstream_ver1;
274 char *upstream_ver2;
275 int result;
276
277 /* Compare epoch */
278 if (ch_ver1[1] == ':') {
279 epoch1 = ch_ver1[0];
280 ver1_ptr = strchr(ch_ver1, ':') + 1;
281 } else {
282 epoch1 = '0';
283 ver1_ptr = ch_ver1;
284 }
285 if (ch_ver2[1] == ':') {
286 epoch2 = ch_ver2[0];
287 ver2_ptr = strchr(ch_ver2, ':') + 1;
288 } else {
289 epoch2 = '0';
290 ver2_ptr = ch_ver2;
291 }
292 if (epoch1 < epoch2) {
293 return(-1);
208 } 294 }
295 else if (epoch1 > epoch2) {
296 return(1);
297 }
298
299 /* Compare upstream version */
300 upstream_ver1 = xstrdup(ver1_ptr);
301 upstream_ver2 = xstrdup(ver2_ptr);
302
303 /* Chop off debian version, and store for later use */
304 deb_ver1 = strrchr(upstream_ver1, '-');
305 deb_ver2 = strrchr(upstream_ver2, '-');
306 if (deb_ver1) {
307 deb_ver1[0] = '\0';
308 deb_ver1++;
309 }
310 if (deb_ver2) {
311 deb_ver2[0] = '\0';
312 deb_ver2++;
313 }
314 result = version_compare_part(upstream_ver1, upstream_ver2);
315
316 free(upstream_ver1);
317 free(upstream_ver2);
209 318
210 /* Leaks the old list... return the new one... */ 319 if (result != 0) {
211 return ordered; 320 return(result);
321 }
322
323 /* Compare debian versions */
324 return(version_compare_part(deb_ver1, deb_ver2));
325}
326
327int test_version(const unsigned int version1, const unsigned int version2, const unsigned int operator)
328{
329 const int version_result = version_compare(version1, version2);
330 switch(operator) {
331 case (VER_ANY):
332 return(TRUE);
333 case (VER_EQUAL):
334 if (version_result == 0) {
335 return(TRUE);
336 }
337 break;
338 case (VER_LESS):
339 if (version_result < 0) {
340 return(TRUE);
341 }
342 break;
343 case (VER_LESS_EQUAL):
344 if (version_result <= 0) {
345 return(TRUE);
346 }
347 break;
348 case (VER_MORE):
349 if (version_result > 0) {
350 return(TRUE);
351 }
352 break;
353 case (VER_MORE_EQUAL):
354 if (version_result >= 0) {
355 return(TRUE);
356 }
357 break;
358 }
359 return(FALSE);
212} 360}
213 361
214 362
215/* resolve package dependencies -- 363int search_package_hashtable(const unsigned int name, const unsigned int version, const unsigned int operator)
216 * for each package in the list of packages to be installed, we parse its
217 * dependency info to determine if the dependent packages are either
218 * already installed, or are scheduled to be installed. If both tests fail
219 * than bail.
220 *
221 * The algorithm here is O(n^2*m) where n = number of packages to be
222 * installed and m is the # of dependencies per package. Not a terribly
223 * efficient algorithm, but given that at any one time you are unlikely
224 * to install a very large number of packages it doesn't really matter
225 */
226static package_t *depends_resolve(package_t *pkgs, void *status)
227{ 364{
228 package_t *pkg, *chk; 365 unsigned int probe_address = 0;
229 package_t dependpkg; 366 unsigned int probe_decrement = 0;
230 char **dependsvec; 367
231 int i; 368 make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME);
232 void *found; 369 while(package_hashtable[probe_address] != NULL) {
233 370 if (package_hashtable[probe_address]->name == name) {
234 for (pkg = pkgs; pkg != 0; pkg = pkg->next) { 371 if (operator == VER_ANY) {
235 dependsvec = depends_split(pkg->depends); 372 return(probe_address);
236 i = 0; 373 }
237 while (dependsvec[i] != 0) { 374 if (test_version(package_hashtable[probe_address]->version, version, operator)) {
238 /* Check for dependencies; first look for installed packages */ 375 return(probe_address);
239 dependpkg.package = dependsvec[i];
240 if (((found = tfind(&dependpkg, &status, package_compare)) == 0) ||
241 ((chk = *(package_t **)found) && (chk->state_flag & state_flag_ok) &&
242 (chk->state_status & state_status_installed))) {
243
244 /* if it fails, we look through the list of packages we are going to
245 * install */
246 for (chk = pkgs; chk != 0; chk = chk->next) {
247 if (strcmp(chk->package, dependsvec[i]) == 0 || (chk->provides &&
248 strncmp(chk->provides, dependsvec[i], strlen(dependsvec[i])) == 0)) {
249 if (chk->requiredcount >= DEPENDSMAX) {
250 error_msg("Too many dependencies for %s", chk->package);
251 return 0;
252 }
253 if (chk != pkg) {
254 chk->requiredfor[chk->requiredcount++] = pkg;
255 }
256 break;
257 }
258 }
259 if (chk == 0) {
260 error_msg("%s depends on %s, but it is not going to be installed", pkg->package, dependsvec[i]);
261 return 0;
262 }
263 } 376 }
264 i++; 377 }
378 probe_address -= probe_decrement;
379 if ((int)probe_address < 0) {
380 probe_address += PACKAGE_HASH_PRIME;
265 } 381 }
266 } 382 }
267 383 return(probe_address);
268 return depends_sort(pkgs);
269} 384}
270#endif 385
271 386/*
272/* Status file handling routines 387 * Create one new node and one new edge for every dependency.
273 *
274 * This is a fairly minimalistic implementation. there are two main functions
275 * that are supported:
276 *
277 * 1) reading the entire status file:
278 * the status file is read into memory as a binary-tree, with just the
279 * package and status info preserved
280 *
281 * 2) merging the status file
282 * control info from (new) packages is merged into the status file,
283 * replacing any pre-existing entries. when a merge happens, status info
284 * read using the status_read function is written back to the status file
285 */ 388 */
286static unsigned char status_parse(const char *line, const char **status_words) 389void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned int edge_type)
287{ 390{
288 unsigned char status_num; 391 char *line = xstrdup(whole_line);
289 int i = 0; 392 char *line2;
393 char *line_ptr1 = NULL;
394 char *line_ptr2 = NULL;
395 char *field;
396 char *field2;
397 char *version;
398 edge_t *edge;
399 int offset_ch;
400 int type;
401
402 field = strtok_r(line, ",", &line_ptr1);
403 do {
404 line2 = xstrdup(field);
405 field2 = strtok_r(line2, "|", &line_ptr2);
406 if ((edge_type == EDGE_DEPENDS) && (strcmp(field, field2) != 0)) {
407 type = EDGE_OR_DEPENDS;
408 }
409 else if ((edge_type == EDGE_PRE_DEPENDS) && (strcmp(field, field2) != 0)) {
410 type = EDGE_OR_PRE_DEPENDS;
411 } else {
412 type = edge_type;
413 }
414
415 do {
416 edge = (edge_t *) xmalloc(sizeof(edge_t));
417 edge->type = type;
418
419 /* Skip any extra leading spaces */
420 field2 += strspn(field2, " ");
421
422 /* Get dependency version info */
423 version = strchr(field2, '(');
424 if (version == NULL) {
425 edge->operator = VER_ANY;
426 /* Get the versions hash number, adding it if the number isnt already in there */
427 edge->version = search_name_hashtable("ANY");
428 } else {
429 /* Skip leading ' ' or '(' */
430 version += strspn(field2, " ");
431 version += strspn(version, "(");
432 /* Calculate length of any operator charactors */
433 offset_ch = strspn(version, "<=>");
434 /* Determine operator */
435 if (offset_ch > 0) {
436 if (strncmp(version, "=", offset_ch) == 0) {
437 edge->operator = VER_EQUAL;
438 }
439 else if (strncmp(version, "<<", offset_ch) == 0) {
440 edge->operator = VER_LESS;
441 }
442 else if (strncmp(version, "<=", offset_ch) == 0) {
443 edge->operator = VER_LESS_EQUAL;
444 }
445 else if (strncmp(version, ">>", offset_ch) == 0) {
446 edge->operator = VER_MORE;
447 }
448 else if (strncmp(version, ">=", offset_ch) == 0) {
449 edge->operator = VER_MORE_EQUAL;
450 } else {
451 error_msg_and_die("Illegal operator\n");
452 }
453 }
454 /* skip to start of version numbers */
455 version += offset_ch;
456 version += strspn(version, " ");
457
458 /* Truncate version at trailing ' ' or ')' */
459 version[strcspn(version, " )")] = '\0';
460 /* Get the versions hash number, adding it if the number isnt already in there */
461 edge->version = search_name_hashtable(version);
462 }
463
464 /* Get the dependency name */
465 field2[strcspn(field2, " (")] = '\0';
466 edge->name = search_name_hashtable(field2);
467
468 /* link the new edge to the current node */
469 parent_node->num_of_edges++;
470 parent_node->edge = xrealloc(parent_node->edge, sizeof(edge_t) * (parent_node->num_of_edges + 1));
471 parent_node->edge[parent_node->num_of_edges - 1] = edge;
472 } while ((field2 = strtok_r(NULL, "|", &line_ptr2)) != NULL);
473 free(line2);
474 } while ((field = strtok_r(NULL, ",", &line_ptr1)) != NULL);
475 free(line);
290 476
291 while (status_words[i] != 0) { 477 return;
292 if (strncmp(line, status_words[i], strlen(status_words[i])) == 0) { 478}
293 status_num = (char)i; 479
294 return(status_num); 480void free_package(common_node_t *node)
481{
482 int i;
483 if (node != NULL) {
484 for (i = 0; i < node->num_of_edges; i++) {
485 if (node->edge[i] != NULL) {
486 free(node->edge[i]);
487 }
488 }
489 if (node->edge != NULL) {
490 free(node->edge);
491 }
492 if (node != NULL) {
493 free(node);
295 } 494 }
296 i++;
297 } 495 }
298 /* parse error */
299 error_msg("Invalid status word");
300 return(0);
301} 496}
302 497
303/* 498unsigned int fill_package_struct(char *control_buffer)
304 * Read the buffered control file and parse it,
305 * filling parsed fields into the package structure
306 */
307static int fill_package_struct(package_t *package, const char *package_buffer)
308{ 499{
309 char *field = NULL; 500 common_node_t *new_node = (common_node_t *) xcalloc(1, sizeof(common_node_t));
501
502 char *field;
503 char *field_name;
504 char *field_value;
310 int field_start = 0; 505 int field_start = 0;
311 int field_length = 0; 506 int field_length;
507 int seperator_offset;
508 int num = -1;
509 int buffer_length = strlen(control_buffer);
510
511 new_node->version = search_name_hashtable("unknown");
512 while (field_start < buffer_length) {
513 field = read_package_field(&control_buffer[field_start]);
312 514
313 while ((field = read_package_field(&package_buffer[field_start])) != NULL) { 515 /* Setup start point for next field */
314 field_length = strlen(field); 516 field_length = strlen(field);
315 field_start += (field_length + 1); 517 field_start += (field_length + 1);
316 518
317 if (strlen(field) == 0) { 519 seperator_offset = strcspn(field, ":");
318 printf("empty line: *this shouldnt happen i dont think*\n"); 520 field_name = xstrndup(field, seperator_offset);
319 break; 521 field_value = field + seperator_offset + 1;
320 } 522 field_value += strspn(field_value, " \n\t");
321 523
322 /* these are common to both installed and uninstalled packages */ 524 if (strcmp(field_name, "Package") == 0) {
323 if (strstr(field, "Package: ") == field) { 525 new_node->name = search_name_hashtable(field_value);
324 package->package = strdup(field + 9);
325 }
326 else if (strstr(field, "Depends: ") == field) {
327 package->depends = strdup(field + 9);
328 }
329 else if (strstr(field, "Provides: ") == field) {
330 package->provides = strdup(field + 10);
331 } 526 }
332 /* This is specific to the Debian Installer. Ifdef? */ 527 else if (strcmp(field_name, "Version") == 0) {
333 else if (strstr(field, "installer-menu-item: ") == field) { 528 new_node->version = search_name_hashtable(field_value);
334 package->installer_menu_item = atoi(field + 21);
335 } 529 }
336 else if (strstr(field, "Description: ") == field) { 530 else if (strcmp(field_name, "Pre-Depends") == 0) {
337 package->description = strdup(field + 13); 531 add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS);
338 } 532 }
339 else if (strstr(field, "Priority: ") == field) { 533 else if (strcmp(field_name, "Depends") == 0) {
340 package->priority = strdup(field + 10); 534 add_split_dependencies(new_node, field_value, EDGE_DEPENDS);
341 } 535 }
342 else if (strstr(field, "Section: ") == field) { 536 else if (strcmp(field_name, "Replaces") == 0) {
343 package->section = strdup(field + 9); 537 add_split_dependencies(new_node, field_value, EDGE_REPLACES);
344 } 538 }
345 else if (strstr(field, "Installed-Size: ") == field) { 539 else if (strcmp(field_name, "Provides") == 0) {
346 package->installed_size = strdup(field + 16); 540 add_split_dependencies(new_node, field_value, EDGE_PROVIDES);
347 } 541 }
348 else if (strstr(field, "Maintainer: ") == field) { 542 else if (strcmp(field_name, "Conflicts") == 0) {
349 package->maintainer = strdup(field + 12); 543 add_split_dependencies(new_node, field_value, EDGE_CONFLICTS);
350 } 544 }
351 else if (strstr(field, "Version: ") == field) { 545 else if (strcmp(field_name, "Suggests") == 0) {
352 package->version = strdup(field + 9); 546 add_split_dependencies(new_node, field_value, EDGE_SUGGESTS);
353 }
354 else if (strstr(field, "Suggests: ") == field) {
355 package->suggests = strdup(field + 10);
356 }
357 else if (strstr(field, "Recommends: ") == field) {
358 package->recommends = strdup(field + 12);
359 }
360/* else if (strstr(field, "Conffiles: ") == field) {
361 package->conffiles = read_block(file);
362 package->conffiles = xcalloc(1, 1);
363 while ((field = strtok(NULL, "\n")) != NULL) {
364 package->long_description = xrealloc(package->conffiles,
365 strlen(package->conffiles) + strlen(field) + 1);
366 strcat(package->conffiles, field);
367 }
368 }
369*/
370 /* These are only in available file */
371 else if (strstr(field, "Architecture: ") == field) {
372 package->architecture = strdup(field + 14);
373 } 547 }
374 else if (strstr(field, "Filename: ") == field) { 548 else if (strcmp(field_name, "Recommends") == 0) {
375 package->filename = strdup(field + 10); 549 add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS);
376 } 550 }
377 else if (strstr(field, "MD5sum ") == field) { 551 else if (strcmp(field_name, "Enhances") == 0) {
378 package->md5sum = strdup(field + 7); 552 add_split_dependencies(new_node, field_value, EDGE_ENHANCES);
379 } 553 }
380 554 free(field_name);
381 /* This is only needed for status file */
382 if (strstr(field, "Status: ") == field) {
383 char *word_pointer;
384
385 word_pointer = strchr(field, ' ') + 1;
386 package->state_want = status_parse(word_pointer, state_words_want);
387 word_pointer = strchr(word_pointer, ' ') + 1;
388 package->state_flag = status_parse(word_pointer, state_words_flag);
389 word_pointer = strchr(word_pointer, ' ') + 1;
390 package->state_status = status_parse(word_pointer, state_words_status);
391 } else {
392 package->state_want = status_parse("purge", state_words_want);
393 package->state_flag = status_parse("ok", state_words_flag);
394 package->state_status = status_parse("not-installed", state_words_status);
395 }
396
397 free(field); 555 free(field);
398 } 556 }
399 return EXIT_SUCCESS; 557 if (new_node->version == search_name_hashtable("unknown")) {
558 free_package(new_node);
559 return(-1);
560 }
561 num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL);
562 if (package_hashtable[num] == NULL) {
563 package_hashtable[num] = new_node;
564 } else {
565 free_package(new_node);
566 }
567 return(num);
400} 568}
401 569
402extern void write_package(FILE *out_file, package_t *pkg) 570/* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
571unsigned int get_status(const unsigned int status_node, const int num)
403{ 572{
404 if (pkg->package) { 573 char *status_string = name_hashtable[status_hashtable[status_node]->status];
405 fprintf(out_file, "Package: %s\n", pkg->package); 574 char *state_sub_string;
406 } 575 unsigned int state_sub_num;
407 if ((pkg->state_want != 0) || (pkg->state_flag != 0)|| (pkg->state_status != 0)) { 576 int len;
408 fprintf(out_file, "Status: %s %s %s\n", 577 int i;
409 state_words_want[pkg->state_want - 1], 578
410 state_words_flag[pkg->state_flag - 1], 579 /* set tmp_string to point to the start of the word number */
411 state_words_status[pkg->state_status - 1]); 580 for (i = 1; i < num; i++) {
412 } 581 /* skip past a word */
413 if (pkg->depends) { 582 status_string += strcspn(status_string, " ");
414 fprintf(out_file, "Depends: %s\n", pkg->depends); 583 /* skip past the seperating spaces */
415 } 584 status_string += strspn(status_string, " ");
416 if (pkg->provides) {
417 fprintf(out_file, "Provides: %s\n", pkg->provides);
418 }
419 if (pkg->priority) {
420 fprintf(out_file, "Priority: %s\n", pkg->priority);
421 }
422 if (pkg->section) {
423 fprintf(out_file, "Section: %s\n", pkg->section);
424 }
425 if (pkg->section) {
426 fprintf(out_file, "Installed-Size: %s\n", pkg->installed_size);
427 }
428 if (pkg->maintainer) {
429 fprintf(out_file, "Maintainer: %s\n", pkg->maintainer);
430 }
431 if (pkg->source) {
432 fprintf(out_file, "Source: %s\n", pkg->source);
433 }
434 if (pkg->version) {
435 fprintf(out_file, "Version: %s\n", pkg->version);
436 }
437 if (pkg->pre_depends) {
438 fprintf(out_file, "Pre-depends: %s\n", pkg->pre_depends);
439 }
440 if (pkg->replaces) {
441 fprintf(out_file, "Replaces: %s\n", pkg->replaces);
442 }
443 if (pkg->recommends) {
444 fprintf(out_file, "Recommends: %s\n", pkg->recommends);
445 }
446 if (pkg->suggests) {
447 fprintf(out_file, "Suggests: %s\n", pkg->suggests);
448 }
449 if (pkg->conflicts) {
450 fprintf(out_file, "Conflicts: %s\n", pkg->conflicts);
451 }
452 if (pkg->conffiles) {
453 fprintf(out_file, "Conf-files: %s\n", pkg->conffiles);
454 }
455 if (pkg->architecture) {
456 fprintf(out_file, "Architecture: %s\n", pkg->architecture);
457 }
458 if (pkg->filename) {
459 fprintf(out_file, "Filename: %s\n", pkg->filename);
460 }
461 if (pkg->md5sum) {
462 fprintf(out_file, "MD5sum: %s\n", pkg->md5sum);
463 } 585 }
464 if (pkg->installer_menu_item) { 586 len = strcspn(status_string, " \n\0");
465 fprintf(out_file, "installer-main-menu %d\n", pkg->installer_menu_item); 587 state_sub_string = xstrndup(status_string, len);
588 state_sub_num = search_name_hashtable(state_sub_string);
589 free(state_sub_string);
590 return(state_sub_num);
591}
592
593void set_status(const unsigned int status_node_num, const char *new_value, const int position)
594{
595 const unsigned int new_value_len = strlen(new_value);
596 const unsigned int new_value_num = search_name_hashtable(new_value);
597 unsigned int want = get_status(status_node_num, 1);
598 unsigned int flag = get_status(status_node_num, 2);
599 unsigned int status = get_status(status_node_num, 3);
600 int want_len = strlen(name_hashtable[want]);
601 int flag_len = strlen(name_hashtable[flag]);
602 int status_len = strlen(name_hashtable[status]);
603 char *new_status;
604
605 switch (position) {
606 case (1):
607 want = new_value_num;
608 want_len = new_value_len;
609 break;
610 case (2):
611 flag = new_value_num;
612 flag_len = new_value_len;
613 break;
614 case (3):
615 status = new_value_num;
616 status_len = new_value_len;
617 break;
618 default:
619 error_msg_and_die("DEBUG ONLY: this shouldnt happen");
466 } 620 }
467 if (pkg->description) { 621
468 fprintf(out_file, "Description: %s\n", pkg->description); 622 new_status = (char *) xmalloc(want_len + flag_len + status_len + 3);
623 sprintf(new_status, "%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]);
624 status_hashtable[status_node_num]->status = search_name_hashtable(new_status);
625 return;
626}
627
628void index_status_file(const char *filename)
629{
630 FILE *status_file;
631 char *control_buffer;
632 char *status_line;
633 status_node_t *status_node = NULL;
634 unsigned int status_num;
635
636 status_file = fopen(filename, "r");
637 while ((control_buffer = fgets_str(status_file, "\n\n")) != NULL) {
638 const unsigned int package_num = fill_package_struct(control_buffer);
639 if (package_num != -1) {
640 status_node = xmalloc(sizeof(status_node_t));
641 /* fill_package_struct doesnt handle the status field */
642 status_line = strstr(control_buffer, "Status:");
643 if (status_line != NULL) {
644 status_line += 7;
645 status_line += strspn(status_line, " \n\t");
646 status_line = xstrndup(status_line, strcspn(status_line, "\n\0"));
647 status_node->status = search_name_hashtable(status_line);
648 free(status_line);
649 }
650 status_node->package = package_num;
651 status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]);
652 status_hashtable[status_num] = status_node;
653 }
654 free(control_buffer);
469 } 655 }
470 fputc('\n', out_file); 656 fclose(status_file);
471 pkg = pkg->next; 657 return;
472} 658}
473 659
474static void *status_read(void) 660
661char *get_depends_field(common_node_t *package, const int depends_type)
475{ 662{
476 FILE *f; 663 char *depends = NULL;
477 void *status = 0; 664 char *old_sep = (char *)xcalloc(1, 3);
478 package_t *m = 0, *p = 0, *t = 0; 665 char *new_sep = (char *)xcalloc(1, 3);
479 char *package_control_buffer = NULL; 666 int line_size = 0;
667 int depends_size;
480 668
481 if (getenv(udpkg_quiet) == NULL) { 669 int i;
482 printf("(Reading database...)\n");
483 }
484 670
485 if ((f = wfopen(statusfile, "r")) == NULL) { 671 for (i = 0; i < package->num_of_edges; i++) {
486 return(NULL); 672 if ((package->edge[i]->type == EDGE_OR_PRE_DEPENDS) ||
487 } 673 (package->edge[i]->type == EDGE_OR_DEPENDS)) {
674 }
488 675
489 while ( (package_control_buffer = fgets_str(f, "\n\n")) != NULL) { 676 if ((package->edge[i]->type == depends_type) ||
490 m = (package_t *)xcalloc(1, sizeof(package_t)); 677 (package->edge[i]->type == depends_type + 1)) {
491 fill_package_struct(m, package_control_buffer); 678 /* Check if its the first time through */
492 if (m->package) { 679
493 /* 680 depends_size = 8 + strlen(name_hashtable[package->edge[i]->name])
494 * If there is an item in the tree by this name, 681 + strlen(name_hashtable[package->edge[i]->version]);
495 * it must be a virtual package; insert real 682 line_size += depends_size;
496 * package in preference. 683 depends = (char *) xrealloc(depends, line_size + 1);
497 */ 684
498 tdelete(m, &status, package_compare); 685 /* Check to see if this dependency is the type we are looking for
499 tsearch(m, &status, package_compare); 686 * +1 to check for 'extra' types, e.g. ored dependecies */
500 if (m->provides) { 687 strcpy(old_sep, new_sep);
501 /* 688 if (package->edge[i]->type == depends_type) {
502 * A "Provides" triggers the insertion 689 strcpy(new_sep, ", ");
503 * of a pseudo package into the status 690 }
504 * binary-tree. 691 else if (package->edge[i]->type == depends_type + 1) {
505 */ 692 strcpy(new_sep, "| ");
506 p = (package_t *)xcalloc(1, sizeof(package_t)); 693 }
507 p->package = xstrdup(m->provides); 694
508 t = *(package_t **)tsearch(p, &status, package_compare); 695 if (depends_size == line_size) {
509 if (t != p) { 696 strcpy(depends, "");
510 free(p->package); 697 } else {
511 free(p); 698 if ((strcmp(old_sep, "| ") == 0) && (strcmp(new_sep, "| ") == 0)) {
699 strcat(depends, " | ");
512 } else { 700 } else {
513 /* 701 strcat(depends, ", ");
514 * Pseudo package status is the
515 * same as the status of the
516 * package providing it
517 * FIXME: (not quite right, if 2
518 * packages of different statuses
519 * provide it).
520 */
521 t->state_want = m->state_want;
522 t->state_flag = m->state_flag;
523 t->state_status = m->state_status;
524 } 702 }
525 } 703 }
526 } 704
527 else { 705 strcat(depends, name_hashtable[package->edge[i]->name]);
528 free(m); 706 if (strcmp(name_hashtable[package->edge[i]->version], "NULL") != 0) {
707 if (package->edge[i]->operator == VER_EQUAL) {
708 strcat(depends, " (= ");
709 }
710 else if (package->edge[i]->operator == VER_LESS) {
711 strcat(depends, " (<< ");
712 }
713 else if (package->edge[i]->operator == VER_LESS_EQUAL) {
714 strcat(depends, " (<= ");
715 }
716 else if (package->edge[i]->operator == VER_MORE) {
717 strcat(depends, " (>> ");
718 }
719 else if (package->edge[i]->operator == VER_MORE_EQUAL) {
720 strcat(depends, " (>= ");
721 } else {
722 strcat(depends, " (");
723 }
724 strcat(depends, name_hashtable[package->edge[i]->version]);
725 strcat(depends, ")");
726 }
529 } 727 }
530 } 728 }
531 fclose(f); 729 return(depends);
532 return status;
533} 730}
534 731
535static int status_merge(void *status, package_t *pkgs) 732/* This could do with a cleanup */
733void write_status_file(deb_file_t **deb_file)
536{ 734{
537 FILE *fin, *fout; 735 FILE *old_status_file = xfopen("/var/lib/dpkg/status", "r");
538 char *line = NULL; 736 FILE *new_status_file = xfopen("/var/lib/dpkg/status.udeb", "w");
539 package_t *pkg = 0, *statpkg = 0; 737 char *package_name;
540 package_t locpkg; 738 char *status_from_file;
739 char *control_buffer = NULL;
740 char *tmp_string;
741 char *field;
742 int status_num;
743 int field_length;
744 int field_start = 0;
745 int buffer_length;
746 int write_flag;
747 int i = 0;
541 748
542 if ((fout = wfopen(new_statusfile, "w")) == NULL) { 749 /* Update previously known packages */
543 return 0; 750 while ((control_buffer = fgets_str(old_status_file, "\n\n")) != NULL) {
544 } 751 tmp_string = strstr(control_buffer, "Package:") + 8;
545 if (getenv(udpkg_quiet) == NULL) { 752 tmp_string += strspn(tmp_string, " \n\t");
546 printf("(Updating database...)\n"); 753 package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n\0"));
547 } 754 write_flag = FALSE;
755
756 tmp_string = strstr(control_buffer, "Status:");
757 if (tmp_string != NULL) {
758 /* Seperate the status value from the control buffer */
759 tmp_string += 7;
760 tmp_string += strspn(tmp_string, " \n\t");
761 status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
762 } else {
763 status_from_file = NULL;
764 }
548 765
549 /* 766 /* Find this package in the status hashtable */
550 * Dont use wfopen here, handle errors ourself 767 status_num = search_status_hashtable(package_name);
551 */ 768 if (status_hashtable[status_num] != NULL) {
552 if ((fin = fopen(statusfile, "r")) != NULL) { 769 const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status];
553 while (((line = get_line_from_file(fin)) != NULL) && !feof(fin)) { 770 if (strcmp(status_from_file, status_from_hashtable) != 0) {
554 chomp(line); /* trim newline */ 771 /* New status isnt exactly the same as old status */
555 /* If we see a package header, find out if it's a package 772 const int state_status = get_status(status_num, 3);
556 * that we have processed. if so, we skip that block for 773 if ((strcmp("installed", name_hashtable[state_status]) == 0) ||
557 * now (write it at the end). 774 (strcmp("unpacked", name_hashtable[state_status]) == 0)) {
558 * 775 /* We need to add the control file from the package */
559 * we also look at packages in the status cache and update 776 i = 0;
560 * their status fields 777 while(deb_file[i] != NULL) {
561 */ 778 if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) {
562 if (strstr(line, "Package: ") == line) { 779 char *last_char;
563 for (pkg = pkgs; pkg != 0 && strcmp(line + 9, 780 /* Write a status file entry with a modified status */
564 pkg->package) != 0; pkg = pkg->next) ; 781 /* remove trailing \n's */
565 782 while(1) {
566 locpkg.package = line + 9; 783 last_char = last_char_is(deb_file[i]->control_file, '\n');
567 statpkg = tfind(&locpkg, &status, package_compare); 784 if (last_char) {
568 785 *last_char = '\0';
569 /* note: statpkg should be non-zero, unless the status 786 } else {
570 * file was changed while we are processing (no locking 787 break;
571 * is currently done... 788 }
572 */ 789 }
573 if (statpkg != 0) { 790 fputs(deb_file[i]->control_file, new_status_file);
574 statpkg = *(package_t **)statpkg; 791 set_status(status_num, "ok", 2);
792 fprintf(new_status_file, "\nStatus: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
793 write_flag = TRUE;
794 break;
795 }
796 i++;
797 }
798 /* This is temperary, debugging only */
799 if (deb_file[i] == NULL) {
800 error_msg_and_die("ALERT: Couldnt find a control file, your status file may be broken, status may be incorrect for %s", package_name);
801 }
802 }
803 else if (strcmp("not-installed", name_hashtable[state_status]) == 0) {
804 /* Only write the Package, Status, Priority and Section lines */
805 fprintf(new_status_file, "Package: %s\n", package_name);
806 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
807 buffer_length = strlen(control_buffer);
808 while (field_start < buffer_length) {
809 field = read_package_field(&control_buffer[field_start]);
810 field_length = strlen(field);
811 field_start += (field_length + 1);
812 if (strncmp(field, "Priority:", 9) == 0) {
813 fprintf(new_status_file, "Priority:%s\n", field + 9);
814 }
815 if (strncmp(field, "Section:", 8) == 0) {
816 fprintf(new_status_file, "Section:%s\n", field + 8);
817 }
818 }
819 write_flag = TRUE;
820 fputs("\n", new_status_file);
821 }
822 else if (strcmp("config-files", name_hashtable[state_status]) == 0) {
823 /* only change the status line */
824 buffer_length = strlen(control_buffer);
825 while (field_start < buffer_length) {
826 field = read_package_field(&control_buffer[field_start]);
827 /* Setup start point for next field */
828 field_length = strlen(field);
829 field_start += (field_length + 1);
830 if (strncmp(field, "Status:", 7) == 0) {
831 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
832 } else {
833 fprintf(new_status_file, "%s\n", field);
834 }
835 free(field);
836 }
837 write_flag = TRUE;
838 fputs("\n", new_status_file);
575 } 839 }
576 } 840 }
577 if (pkg != 0) { 841 }
578 continue; 842
579 } 843 /* If the package from the status file wasnt handle above, do it now*/
580 if (strstr(line, "Status: ") == line && statpkg != 0) { 844 if (write_flag == FALSE) {
581 snprintf(line, sizeof(line), "Status: %s %s %s", 845 fprintf(new_status_file, "%s\n\n", control_buffer);
582 state_words_want[statpkg->state_want - 1], 846 }
583 state_words_flag[statpkg->state_flag - 1], 847
584 state_words_status[statpkg->state_status - 1]); 848 if (status_from_file != NULL) {
849 free(status_from_file);
850 }
851 free(package_name);
852 free(control_buffer);
853 }
854 /* Write any new packages */
855 for(i = 0; deb_file[i] != NULL; i++) {
856 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]);
857 if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) {
858 char *last_char;
859 /* remove trailing \n's */
860 while(1) {
861 last_char = last_char_is(deb_file[i]->control_file, '\n');
862 if (last_char) {
863 *last_char = '\0';
864 } else {
865 break;
866 }
585 } 867 }
586 fprintf(fout, "%s\n", line); 868
869 fputs(deb_file[i]->control_file, new_status_file);
870 set_status(status_num, "ok", 2);
871 fprintf(new_status_file, "\nStatus: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
587 } 872 }
588 fclose(fin);
589 } 873 }
590 free(line); 874 fclose(old_status_file);
875 fclose(new_status_file);
591 876
592 // Print out packages we processed.
593 for (pkg = pkgs; pkg != 0; pkg = pkg->next) {
594 write_package(fout, pkg);
595 }
596 fclose(fout);
597 877
598 /* 878 /* Create a seperate backfile to dpkg */
599 * Its ok if renaming statusfile fails becasue it doesnt exist 879 if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) {
600 */
601 if (rename(statusfile, bak_statusfile) == -1) {
602 struct stat stat_buf; 880 struct stat stat_buf;
603 if (stat(statusfile, &stat_buf) == 0) { 881 if (stat("/var/lib/dpkg/status", &stat_buf) == 0) {
604 error_msg("Couldnt create backup status file"); 882 error_msg_and_die("Couldnt create backup status file");
605 return(EXIT_FAILURE);
606 } 883 }
884 /* Its ok if renaming the status file fails becasue status
885 * file doesnt exist, maybe we are starting from scratch */
607 error_msg("No status file found, creating new one"); 886 error_msg("No status file found, creating new one");
608 } 887 }
609 888
610 if (rename(new_statusfile, statusfile) == -1) { 889 if (rename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status") == -1) {
611 error_msg("Couldnt create status file"); 890 error_msg_and_die("DANGER: Couldnt create status file, you need to manually repair your status file");
612 return(EXIT_FAILURE);
613 } 891 }
614 return(EXIT_SUCCESS);
615} 892}
616 893
617static int is_file(const char *fn) 894int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
618{ 895{
619 struct stat statbuf; 896 int *conflicts = NULL;
897 int conflicts_num = 0;
898 int state_status;
899 int state_flag;
900 int state_want;
901 unsigned int status_package_num;
902 int i = deb_start;
903 int j, k;
904
905 /* Check for conflicts
906 * TODO: TEST if conflicts with other packages to be installed
907 *
908 * Add install packages and the packages they provide
909 * to the list of files to check conflicts for
910 */
620 911
621 if (stat(fn, &statbuf) < 0) { 912 /* Create array of package numbers to check against
622 return 0; 913 * installed package for conflicts*/
914 while (deb_file[i] != NULL) {
915 const unsigned int package_num = deb_file[i]->package;
916 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
917 conflicts[conflicts_num] = package_num;
918 conflicts_num++;
919 /* add provides to conflicts list */
920 for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) {
921 if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) {
922 const int conflicts_package_num = search_package_hashtable(
923 package_hashtable[package_num]->edge[j]->name,
924 package_hashtable[package_num]->edge[j]->version,
925 package_hashtable[package_num]->edge[j]->operator);
926 if (package_hashtable[conflicts_package_num] == NULL) {
927 /* create a new package */
928 common_node_t *new_node = (common_node_t *) xmalloc(sizeof(common_node_t));
929 new_node->name = package_hashtable[package_num]->edge[j]->name;
930 new_node->version = package_hashtable[package_num]->edge[j]->version;
931 new_node->num_of_edges = 0;
932 new_node->edge = NULL;
933 package_hashtable[conflicts_package_num] = new_node;
934 }
935 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
936 conflicts[conflicts_num] = conflicts_package_num;
937 conflicts_num++;
938 }
939 }
940 i++;
623 } 941 }
624 return S_ISREG(statbuf.st_mode); 942
943 /* Check conflicts */
944 for (i = 0; i < conflicts_num; i++) {
945 /* Check for conflicts */
946 for (j = 0; j < STATUS_HASH_PRIME; j++) {
947 if (status_hashtable[j] == NULL) {
948 continue;
949 }
950 state_flag = get_status(j, 2);
951 state_status = get_status(j, 3);
952 if ((state_status != search_name_hashtable("installed"))
953 && (state_flag != search_name_hashtable("want-install"))) {
954 continue;
955 }
956 status_package_num = status_hashtable[j]->package;
957 for (k = 0; k < package_hashtable[status_package_num]->num_of_edges; k++) {
958 const edge_t *package_edge = package_hashtable[status_package_num]->edge[k];
959 if (package_edge->type != EDGE_CONFLICTS) {
960 continue;
961 }
962 if (package_edge->name != package_hashtable[conflicts[i]]->name) {
963 continue;
964 }
965 /* There is a conflict against the package name
966 * check if version conflict as well */
967 if (test_version(package_hashtable[deb_file[i]->package]->version,
968 package_edge->version, package_edge->operator)) {
969 error_msg_and_die("Package %s conflict with %s",
970 name_hashtable[package_hashtable[deb_file[i]->package]->name],
971 name_hashtable[package_hashtable[status_package_num]->name]);
972 }
973 }
974 }
975 }
976
977 /* Check dependendcies */
978 i = 0;
979 while (deb_file[i] != NULL) {
980 const common_node_t *package_node = package_hashtable[deb_file[i]->package];
981 int status_num = 0;
982
983 for (j = 0; j < package_hashtable[deb_file[i]->package]->num_of_edges; j++) {
984 const edge_t *package_edge = package_node->edge[j];
985 const unsigned int package_num = search_package_hashtable(package_edge->name,
986 package_edge->version, package_edge->operator);
987
988 status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
989 state_status = get_status(status_num, 3);
990 state_want = get_status(status_num, 1);
991 switch (package_edge->type) {
992 case(EDGE_PRE_DEPENDS):
993 case(EDGE_OR_PRE_DEPENDS):
994 /* It must be already installed */
995 /* NOTE: This is untested, nothing apropriate in my status file */
996 if ((package_hashtable[package_num] == NULL) || (state_status != search_name_hashtable("installed"))) {
997 error_msg_and_die("Package %s pre-depends on %s, but it is not installed",
998 name_hashtable[package_node->name],
999 name_hashtable[package_edge->name]);
1000 }
1001 break;
1002 case(EDGE_DEPENDS):
1003 case(EDGE_OR_DEPENDS):
1004 /* It must be already installed, or to be installed */
1005 if ((package_hashtable[package_num] == NULL) ||
1006 ((state_status != search_name_hashtable("installed")) &&
1007 (state_want != search_name_hashtable("want_install")))) {
1008 error_msg_and_die("Package %s depends on %s, but it is not installed, or flaged to be installed",
1009 name_hashtable[package_node->name],
1010 name_hashtable[package_edge->name]);
1011 }
1012 break;
1013 }
1014 }
1015 i++;
1016 }
1017 return(TRUE);
625} 1018}
626 1019
627static int dpkg_doconfigure(package_t *pkg) 1020char **create_list(const char *filename)
628{ 1021{
629 int r; 1022 FILE *list_stream;
630 char postinst[1024]; 1023 char **file_list = xmalloc(sizeof(char *));
631 char buf[1024]; 1024 char *line = NULL;
632 1025 char *last_char;
633 DPRINTF("Configuring %s\n", pkg->package); 1026 int length = 0;
634 pkg->state_status = 0; 1027 int count = 0;
635 snprintf(postinst, sizeof(postinst), "%s%s.postinst", infodir, pkg->package);
636 1028
637 if (is_file(postinst)) { 1029 list_stream = fopen(filename, "r");
638 snprintf(buf, sizeof(buf), "%s configure", postinst); 1030 if (list_stream == NULL) {
639 if ((r = do_system(buf)) != 0) { 1031 return(NULL);
640 error_msg("postinst exited with status %d\n", r); 1032 }
641 pkg->state_status = state_status_halfconfigured; 1033 while (getline(&line, &length, list_stream) != -1) {
642 return 1; 1034 file_list = xrealloc(file_list, sizeof(char *) * (length + 1));
1035 last_char = last_char_is(line, '\n');
1036 if (last_char) {
1037 *last_char = '\0';
643 } 1038 }
1039 file_list[count] = xstrdup(line);
1040 free(line);
1041 count++;
1042 length = 0;
1043 }
1044 fclose(list_stream);
1045 if (count == 0) {
1046 return(NULL);
1047 } else {
1048 file_list[count] = NULL;
1049 return(file_list);
644 } 1050 }
645 pkg->state_status = state_status_installed;
646
647 return 0;
648} 1051}
649 1052
650static int dpkg_dounpack(package_t *pkg) 1053/* maybe i should try and hook this into remove_file.c somehow */
1054int remove_file_array(char **remove_names, char **exclude_names)
651{ 1055{
652 FILE *out_stream; 1056 struct stat path_stat;
653 char *info_prefix; 1057 int match_flag;
654 int status = TRUE; 1058 int remove_flag = FALSE;
655 int r = 0; 1059 int i,j;
656
657 DPRINTF("Unpacking %s\n", pkg->package);
658 1060
659 /* extract the data file */ 1061 if (remove_names == NULL) {
660 deb_extract(pkg->filename, stdout, (extract_data_tar_gz | extract_all_to_fs), "/", NULL); 1062 return(FALSE);
1063 }
1064 for (i = 0; remove_names[i] != NULL; i++) {
1065 match_flag = FALSE;
1066 if (exclude_names != NULL) {
1067 for (j = 0; exclude_names[j] != 0; j++) {
1068 if (strcmp(remove_names[i], exclude_names[j]) == 0) {
1069 match_flag = TRUE;
1070 break;
1071 }
1072 }
1073 }
1074 if (!match_flag) {
1075 if (lstat(remove_names[i], &path_stat) < 0) {
1076 continue;
1077 }
1078 if (S_ISDIR(path_stat.st_mode)) {
1079 if (rmdir(remove_names[i]) != -1) {
1080 remove_flag = TRUE;
1081 }
1082 } else {
1083 if (unlink(remove_names[i]) != -1) {
1084 remove_flag = TRUE;
1085 }
1086 }
1087 }
1088 }
1089 return(remove_flag);
1090}
661 1091
662 /* extract the control files */ 1092int run_package_script(const char *package_name, const char *script_type)
663 info_prefix = (char *) malloc(strlen(pkg->package) + strlen(infodir) + 2 + 5 + 1); 1093{
664 sprintf(info_prefix, "%s/%s.", infodir, pkg->package); 1094 struct stat path_stat;
665 deb_extract(pkg->filename, stdout, (extract_control_tar_gz | extract_all_to_fs), info_prefix, NULL); 1095 char *script_path;
666 1096
667 /* Create the list file */ 1097 script_path = xmalloc(strlen(package_name) + strlen(script_type) + 21);
668 strcat(info_prefix, "list"); 1098 sprintf(script_path, "/var/lib/dpkg/info/%s.%s", package_name, script_type);
669 out_stream = wfopen(info_prefix, "w");
670 deb_extract(pkg->filename, out_stream, (extract_data_tar_gz | extract_list), NULL, NULL);
671 fclose(out_stream);
672 1099
673 pkg->state_want = state_want_install; 1100 /* If the file doesnt exist is isnt a fatal */
674 pkg->state_flag = state_flag_ok; 1101 if (lstat(script_path, &path_stat) < 0) {
675 1102 return(EXIT_SUCCESS);
676 if (status == TRUE) {
677 pkg->state_status = state_status_unpacked;
678 } else { 1103 } else {
679 pkg->state_status = state_status_halfinstalled; 1104 return(system(script_path));
680 } 1105 }
681
682 return r;
683} 1106}
684 1107
685/* 1108void all_control_list(char **remove_files, const char *package_name)
686 * Extract and parse the control file from control.tar.gz
687 */
688static int dpkg_read_control(package_t *pkg)
689{ 1109{
690 FILE *pkg_file; 1110 const char *all_extensions[11] = {"preinst", "postinst", "prerm", "postrm",
691 char *control_buffer = NULL; 1111 "list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL };
1112 int i;
692 1113
693 if ((pkg_file = wfopen(pkg->filename, "r")) == NULL) { 1114 /* Create a list of all /var/lib/dpkg/info/<package> files */
694 return EXIT_FAILURE; 1115 for(i = 0; i < 10; i++) {
1116 remove_files[i] = xmalloc(strlen(package_name) + strlen(all_extensions[i]) + 21);
1117 sprintf(remove_files[i], "/var/lib/dpkg/info/%s.%s", package_name, all_extensions[i]);
695 } 1118 }
696 control_buffer = deb_extract(pkg->filename, stdout, (extract_control_tar_gz | extract_one_to_buffer), NULL, "./control"); 1119 remove_files[10] = NULL;
697 fill_package_struct(pkg, control_buffer);
698 return EXIT_SUCCESS;
699} 1120}
700 1121
701static int dpkg_unpack(package_t *pkgs, void *status) 1122void remove_package(const unsigned int package_num)
702{ 1123{
703 int r = 0; 1124 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
704 package_t *pkg; 1125 const unsigned int status_num = search_status_hashtable(package_name);
705 1126 const int package_name_length = strlen(package_name);
706 for (pkg = pkgs; pkg != 0; pkg = pkg->next) { 1127 char **remove_files;
707 dpkg_read_control(pkg); 1128 char **exclude_files;
708 if ((r = dpkg_dounpack(pkg)) != 0 ) { 1129 char list_name[package_name_length + 25];
709 break; 1130 char conffile_name[package_name_length + 30];
710 } 1131 int return_value;
1132
1133 /* run prerm script */
1134 return_value = run_package_script(package_name, "prem");
1135 if (return_value == -1) {
1136 error_msg_and_die("script failed, prerm failure");
711 } 1137 }
712 status_merge(status, pkgs);
713 1138
714 return r; 1139 /* Create a list of files to remove, and a seperate list of those to keep */
715} 1140 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
1141 remove_files = create_list(list_name);
716 1142
717static int dpkg_configure(package_t *pkgs, void *status) 1143 sprintf(conffile_name, "/var/lib/dpkg/info/%s.conffiles", package_name);
718{ 1144 exclude_files = create_list(conffile_name);
719 int r = 0;
720 void *found;
721 package_t *pkg;
722 1145
723 for (pkg = pkgs; pkg != 0 && r == 0; pkg = pkg->next) { 1146 /* Some directories cant be removed straight away, so do multiple passes */
724 found = tfind(pkg, &status, package_compare); 1147 while (remove_file_array(remove_files, exclude_files) == TRUE);
725 1148
726 if (found == 0) { 1149 /* Create a list of all /var/lib/dpkg/info/<package> files */
727 error_msg("Trying to configure %s, but it is not installed", pkg->package); 1150 remove_files = xmalloc(11);
728 r = 1; 1151 all_control_list(remove_files, package_name);
729 }
730 /* configure the package listed in the status file;
731 * not pkg, as we have info only for the latter
732 */
733 else {
734 r = dpkg_doconfigure(*(package_t **)found);
735 }
736 }
737 status_merge(status, 0);
738 1152
739 return r; 1153 /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */
1154 exclude_files = xmalloc(sizeof(char*) * 3);
1155 exclude_files[0] = xstrdup(conffile_name);
1156 exclude_files[1] = xmalloc(package_name_length + 27);
1157 sprintf(exclude_files[1], "/var/lib/dpkg/info/%s.postrm", package_name);
1158 exclude_files[2] = NULL;
1159
1160 remove_file_array(remove_files, exclude_files);
1161
1162 /* rename <package>.conffile to <package>.list */
1163 rename(conffile_name, list_name);
1164
1165 /* Change package status */
1166 set_status(status_num, "deinstall", 1);
1167 set_status(status_num, "config-files", 3);
740} 1168}
741 1169
742static int dpkg_install(package_t *pkgs, void *status) 1170void purge_package(const unsigned int package_num)
743{ 1171{
744 package_t *p, *ordered = 0; 1172 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
745 1173 const unsigned int status_num = search_status_hashtable(package_name);
746 /* Stage 1: parse all the control information */ 1174 char **remove_files;
747 for (p = pkgs; p != 0; p = p->next) { 1175 char **exclude_files;
748 dpkg_read_control(p); 1176 char list_name[strlen(package_name) + 25];
1177
1178 /* run prerm script */
1179 if (run_package_script(package_name, "prerm") == -1) {
1180 error_msg_and_die("script failed, prerm failure");
749 } 1181 }
750 1182
751 /* Stage 2: resolve dependencies */ 1183 /* Create a list of files to remove */
752#ifdef DODEPENDS 1184 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
753 ordered = depends_resolve(pkgs, status); 1185 remove_files = create_list(list_name);
754#else
755 ordered = pkgs;
756#endif
757
758 /* Stage 3: install */
759 for (p = ordered; p != 0; p = p->next) {
760 p->state_want = state_want_install;
761 1186
762 /* for now the flag is always set to ok... this is probably 1187 exclude_files = xmalloc(1);
763 * not what we want 1188 exclude_files[0] = NULL;
764 */
765 p->state_flag = state_flag_ok;
766 1189
767 DPRINTF("Installing %s\n", p->package); 1190 /* Some directories cant be removed straight away, so do multiple passes */
768 if (dpkg_dounpack(p) != 0) { 1191 while (remove_file_array(remove_files, exclude_files) == TRUE);
769 perror_msg(p->filename);
770 }
771 1192
772 if (dpkg_doconfigure(p) != 0) { 1193 /* Create a list of all /var/lib/dpkg/info/<package> files */
773 perror_msg(p->filename); 1194 remove_files = xmalloc(11);
774 } 1195 all_control_list(remove_files, package_name);
1196 remove_file_array(remove_files, exclude_files);
1197
1198 /* run postrm script */
1199 if (run_package_script(package_name, "postrm") == -1) {
1200 error_msg_and_die("postrm fialure.. set status to what?");
775 } 1201 }
1202 /* Change package status */
1203 set_status(status_num, "purge", 1);
1204 set_status(status_num, "not-installed", 3);
1205}
1206
1207void unpack_package(deb_file_t *deb_file)
1208{
1209 const unsigned int package_name_num = package_hashtable[deb_file->package]->name;
1210 const char *package_name = name_hashtable[package_name_num];
1211 const unsigned int status_num = search_status_hashtable(package_name);
1212 unsigned int status_package_num;
776 1213
777 if (ordered != 0) { 1214 FILE *out_stream;
778 status_merge(status, pkgs); 1215 char *info_prefix;
1216
1217 /* If existing version, remove it first */
1218 if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) {
1219 /* Package is already installed, remove old version first */
1220 printf("Preparing to replace %s %s (using %s) ...\n", package_name,
1221 name_hashtable[package_hashtable[status_package_num]->version],
1222 deb_file->filename);
1223 remove_package(status_package_num);
1224 } else {
1225 printf("Unpacking %s (from %s) ...\n", package_name, deb_file->filename);
779 } 1226 }
780 1227
781 return 0; 1228 /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
1229 info_prefix = (char *) xmalloc(sizeof(package_name) + 20 + 4 + 1);
1230 sprintf(info_prefix, "/var/lib/dpkg/info/%s.", package_name);
1231 deb_extract(deb_file->filename, stdout, (extract_quiet | extract_control_tar_gz | extract_all_to_fs), info_prefix, NULL);
1232
1233 /* Extract data.tar.gz to the root directory */
1234 deb_extract(deb_file->filename, stdout, (extract_quiet | extract_data_tar_gz | extract_all_to_fs), "/", NULL);
1235
1236 /* Create the list file */
1237 strcat(info_prefix, "list");
1238
1239 out_stream = wfopen(info_prefix, "w");
1240 deb_extract(deb_file->filename, out_stream, (extract_quiet | extract_data_tar_gz | extract_list), NULL, NULL);
1241 fclose(out_stream);
1242
1243 /* change status */
1244 set_status(status_num, "install", 1);
1245 set_status(status_num, "unpacked", 3);
782} 1246}
783 1247
784/* 1248void configure_package(deb_file_t *deb_file)
785 * Not implemented yet
786 *
787static int dpkg_remove(package_t *pkgs, void *status)
788{ 1249{
789 package_t *p; 1250 int return_value;
790 1251 int status_num;
791 for (p = pkgs; p != 0; p = p->next) 1252
792 { 1253 /* Run the preinst prior to extracting */
1254 return_value = run_package_script(name_hashtable[package_hashtable[deb_file->package]->name], "postinst");
1255 if (return_value == -1) {
1256 /* TODO: handle failure gracefully */
1257 error_msg_and_die("postrm fialure.. set status to what?");
793 } 1258 }
794 status_merge(status, 0);
795 1259
796 return 0; 1260 /* Change status to reflect success */
1261 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file->package]->name]);
1262 set_status(status_num, "install", 1);
1263 set_status(status_num, "installed", 3);
797} 1264}
798*/
799 1265
800extern int dpkg_main(int argc, char **argv) 1266extern int dpkg_main(int argc, char **argv)
801{ 1267{
802 const int arg_install = 1; 1268 deb_file_t **deb_file = NULL;
803 const int arg_unpack = 2; 1269 status_node_t *status_node;
804 const int arg_configure = 4; 1270 char opt = 0;
805 1271 int package_num;
806 package_t *p, *packages = NULL; 1272 int dpkg_opt = 0;
807 void *status = NULL; 1273 int deb_count = 0;
808 int opt = 0; 1274 int state_status;
809 int optflag = 0; 1275 int status_num;
1276 int i;
810 1277
811 while ((opt = getopt(argc, argv, "iruc")) != -1) { 1278 while ((opt = getopt(argc, argv, "cF:ilPru")) != -1) {
812 switch (opt) { 1279 switch (opt) {
1280 case 'c':
1281 dpkg_opt |= dpkg_opt_configure;
1282 dpkg_opt |= dpkg_opt_package_name;
1283 break;
1284 case 'F': // equivalent to --force in official dpkg
1285 if (strcmp(optarg, "depends") == 0) {
1286 dpkg_opt |= dpkg_opt_force_ignore_depends;
1287 }
813 case 'i': 1288 case 'i':
814 optflag |= arg_install; 1289 dpkg_opt |= dpkg_opt_install;
1290 dpkg_opt |= dpkg_opt_filename;
815 break; 1291 break;
816 case 'u': 1292 case 'l':
817 optflag |= arg_unpack; 1293 dpkg_opt |= dpkg_opt_list_installed;
1294 case 'P':
1295 dpkg_opt |= dpkg_opt_purge;
1296 dpkg_opt |= dpkg_opt_package_name;
818 break; 1297 break;
819 case 'c': 1298 case 'r':
820 optflag |= arg_configure; 1299 dpkg_opt |= dpkg_opt_remove;
1300 dpkg_opt |= dpkg_opt_package_name;
1301 break;
1302 case 'u': /* Equivalent to --unpack in official dpkg */
1303 dpkg_opt |= dpkg_opt_unpack;
1304 dpkg_opt |= dpkg_opt_filename;
821 break; 1305 break;
822 default: 1306 default:
823 show_usage(); 1307 show_usage();
824 } 1308 }
825 } 1309 }
826 1310
1311 if ((argc == optind) || (dpkg_opt == 0)) {
1312 show_usage();
1313 }
1314
1315 puts("(Reading database ... xxxxx files and directories installed.)");
1316 index_status_file("/var/lib/dpkg/status");
1317
1318 /* Read arguments and store relevant info in structs */
1319 deb_file = xmalloc(sizeof(deb_file_t));
827 while (optind < argc) { 1320 while (optind < argc) {
828 p = (package_t *) xcalloc(1, sizeof(package_t)); 1321 deb_file[deb_count] = (deb_file_t *) xmalloc(sizeof(deb_file_t));
829 if (optflag & arg_configure) { 1322 if (dpkg_opt & dpkg_opt_filename) {
830 p->package = xstrdup(argv[optind]); 1323 deb_file[deb_count]->filename = xstrdup(argv[optind]);
831 } else { 1324 deb_file[deb_count]->control_file = deb_extract(argv[optind], stdout, (extract_control_tar_gz | extract_one_to_buffer), NULL, "./control");
832 p->filename = xstrdup(argv[optind]); 1325 if (deb_file[deb_count]->control_file == NULL) {
1326 error_msg_and_die("Couldnt extract control file");
1327 }
1328 package_num = fill_package_struct(deb_file[deb_count]->control_file);
1329
1330 if (package_num == -1) {
1331 error_msg("Invalid control file in %s", argv[optind]);
1332 continue;
1333 }
1334 deb_file[deb_count]->package = (unsigned int) package_num;
1335 /* Add the package to the status hashtable */
1336 if ((dpkg_opt & dpkg_opt_unpack) || (dpkg_opt & dpkg_opt_install)) {
1337 status_node = (status_node_t *) xmalloc(sizeof(status_node_t));
1338 status_node->package = deb_file[deb_count]->package;
1339 /* use reinstreq isnt changed to "ok" until the package control info
1340 * is written to the status file*/
1341 status_node->status = search_name_hashtable("install reinstreq not-installed");
1342
1343 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1344 status_hashtable[status_num] = status_node;
1345 }
833 } 1346 }
834 p->next = packages; 1347 else if (dpkg_opt & dpkg_opt_package_name) {
835 packages = p; 1348 deb_file[deb_count]->filename = NULL;
1349 deb_file[deb_count]->control_file = NULL;
1350 deb_file[deb_count]->package = search_package_hashtable(
1351 search_name_hashtable(argv[optind]),
1352 search_name_hashtable("ANY"), VER_ANY);
1353 if (package_hashtable[deb_file[deb_count]->package] == NULL) {
1354 error_msg_and_die("unknown package, %s\n", argv[optind]);
1355 }
1356 state_status = get_status(search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]), 3);
836 1357
1358 /* check package status is "installed" */
1359 if (dpkg_opt & dpkg_opt_remove) {
1360 if ((strcmp(name_hashtable[state_status], "not-installed") == 0) ||
1361 (strcmp(name_hashtable[state_status], "config-files") == 0)) {
1362 error_msg_and_die("%s is already removed.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1363 }
1364 }
1365 else if (dpkg_opt & dpkg_opt_purge) {
1366 /* if package status is "conf-files" then its ok */
1367 if (strcmp(name_hashtable[state_status], "not-installed") == 0) {
1368 error_msg_and_die("%s is already purged.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1369 }
1370 }
1371 }
1372 deb_count++;
837 optind++; 1373 optind++;
838 } 1374 }
1375 deb_file[deb_count] = NULL;
839 1376
840 make_directory((char *)infodir, S_IRWXU, FILEUTILS_RECUR); 1377 /* Check that the deb file arguments are installable */
1378 /* TODO: check dependencies before removing */
1379 if ((dpkg_opt & dpkg_opt_force_ignore_depends) != dpkg_opt_force_ignore_depends) {
1380 if (!check_deps(deb_file, 0, deb_count)) {
1381 error_msg_and_die("Dependency check fialed");
1382 }
1383 }
841 1384
842 status = status_read(); 1385 for (i = 0; i < deb_count; i++) {
1386 /* Remove or purge packages */
1387 if (dpkg_opt & dpkg_opt_remove) {
1388 remove_package(deb_file[i]->package);
1389 }
1390 else if (dpkg_opt & dpkg_opt_purge) {
1391 purge_package(deb_file[i]->package);
1392 }
1393 else if (dpkg_opt & dpkg_opt_unpack) {
1394 unpack_package(deb_file[i]);
1395 }
1396 else if (dpkg_opt & dpkg_opt_install) {
1397 unpack_package(deb_file[i]);
1398 configure_package(deb_file[i]);
1399 }
1400 else if (dpkg_opt & dpkg_opt_configure) {
1401 configure_package(deb_file[i]);
1402 }
1403 }
843 1404
844 if (optflag & arg_install) { 1405 write_status_file(deb_file);
845 return dpkg_install(packages, status); 1406
1407 for (i = 0; i < NAME_HASH_PRIME; i++) {
1408 if (name_hashtable[i] != NULL) {
1409 free(name_hashtable[i]);
1410 }
846 } 1411 }
847 else if (optflag & arg_unpack) { 1412 for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
848 return dpkg_unpack(packages, status); 1413 free_package(package_hashtable[i]);
849 } 1414 }
850 else if (optflag & arg_configure) { 1415 for (i = 0; i < STATUS_HASH_PRIME; i++) {
851 return dpkg_configure(packages, status); 1416 if (status_hashtable[i] != NULL) {
1417 free(status_hashtable[i]);
1418 }
852 } 1419 }
1420
853 return(EXIT_FAILURE); 1421 return(EXIT_FAILURE);
854} 1422}
1423
diff --git a/dpkg.c b/dpkg.c
index 020a68a90..ffe746703 100644
--- a/dpkg.c
+++ b/dpkg.c
@@ -1,854 +1,1423 @@
1#include <ctype.h> 1/*
2#include <dirent.h> 2 * Mini dpkg implementation for busybox.
3 * This is not meant as a replacemnt for dpkg
4 *
5 * Copyright (C) 2001 by Glenn McGrath
6 *
7 * Started life as a busybox implementation of udpkg
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Library General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 */
23
24/*
25 * Known difference between busybox dpkg and the official dpkg that i dont
26 * consider important, its worth keeping a note of differences anyway, just to
27 * make it easier to maintain.
28 * - The first value for the Confflile: field isnt placed on a new line.
29 * - The <package>.control file is extracted and kept in the info dir.
30 * - When installing a package the Status: field is placed at the end of the
31 * section, rather than just after the Package: field.
32 * - Packages with previously unknown status are inserted at the begining of
33 * the status file
34 *
35 * Bugs that need to be fixed
36 * - (unknown, please let me know when you find any)
37 *
38 */
39
3#include <getopt.h> 40#include <getopt.h>
4#include <stdio.h>
5#include <string.h>
6#include <stdlib.h> 41#include <stdlib.h>
7#include <search.h> 42#include <string.h>
8#include <errno.h>
9#include <fcntl.h>
10#include <unistd.h> 43#include <unistd.h>
11#include <utime.h>
12#include <sys/types.h>
13#include <sys/stat.h>
14
15#include "busybox.h" 44#include "busybox.h"
16 45
17#define DEPENDSMAX 64 /* maximum number of depends we can handle */ 46/* NOTE: If you vary HASH_PRIME sizes be aware,
18 47 * 1) Tweaking these will have a big effect on how much memory this program uses.
19/* Should we do full dependency checking? */ 48 * 2) For computational efficiency these hash tables should be at least 20%
20//#define DODEPENDS 0 49 * larger than the maximum number of elements stored in it.
21 50 * 3) All _HASH_PRIME's must be a prime number or chaos is assured, if your looking
22/* Should we do debugging? */ 51 * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt
23//#define DODEBUG 0 52 * 4) If you go bigger than 15 bits you may get into trouble (untested) as its
24 53 * sometimes cast to an unsigned int, if you go to 16 bit you will overlap
25#ifdef DODEBUG 54 * int's and chaos is assured, 16381 is the max prime for 14 bit field
26#define SYSTEM(x) do_system(x) 55 */
27#define DPRINTF(fmt,args...) fprintf(stderr, fmt, ##args)
28#else
29#define SYSTEM(x) system(x)
30#define DPRINTF(fmt,args...) /* nothing */
31#endif
32
33/* from dpkg-deb.c */
34
35static const char statusfile[] = "/var/lib/dpkg/status.udeb";
36static const char new_statusfile[] = "/var/lib/dpkg/status.udeb.new";
37static const char bak_statusfile[] = "/var/lib/dpkg/status.udeb.bak";
38
39static const char infodir[] = "/var/lib/dpkg/info/";
40static const char udpkg_quiet[] = "UDPKG_QUIET";
41
42//static const int status_want_unknown = 1;
43static const int state_want_install = 2;
44//static const int state_want_hold = 3;
45//static const int state_want_deinstall = 4;
46//static const int state_want_purge = 5;
47
48static const int state_flag_ok = 1;
49//static const int state_flag_reinstreq = 2;
50//static const int state_flag_hold = 3;
51//static const int state_flag_holdreinstreq = 4;
52
53//static const int state_statusnoninstalled = 1;
54static const int state_status_unpacked = 2;
55static const int state_status_halfconfigured = 3;
56static const int state_status_installed = 4;
57static const int state_status_halfinstalled = 5;
58//static const int state_statusconfigfiles = 6;
59//static const int state_statuspostinstfailed = 7;
60//static const int state_statusremovalfailed = 8;
61
62static const char *state_words_want[] = { "unknown", "install", "hold", "deinstall", "purge", 0 };
63static const char *state_words_flag[] = { "ok", "reinstreq", "hold", "hold-reinstreq", 0 };
64static const char *state_words_status[] = { "not-installed", "unpacked", "half-configured", "installed",
65 "half-installed", "config-files", "post-inst-failed", "removal-failed", 0 };
66
67static const int color_white = 0;
68static const int color_grey = 1;
69static const int color_black = 2;
70
71/* data structures */
72typedef struct package_s {
73 char *filename;
74 char *package;
75 unsigned char state_want;
76 unsigned char state_flag;
77 unsigned char state_status;
78 char *depends;
79 char *provides;
80 char *description;
81 char *priority;
82 char *section;
83 char *installed_size;
84 char *maintainer;
85 char *source;
86 char *version;
87 char *pre_depends;
88 char *replaces;
89 char *recommends;
90 char *suggests;
91 char *conflicts;
92 char *conffiles;
93 char *long_description;
94 char *architecture;
95 char *md5sum;
96 int installer_menu_item;
97 char color; /* for topo-sort */
98 struct package_s *requiredfor[DEPENDSMAX];
99 unsigned short requiredcount;
100 struct package_s *next;
101} package_t;
102
103#ifdef DODEBUG
104static int do_system(const char *cmd)
105{
106 DPRINTF("cmd is %s\n", cmd);
107 return system(cmd);
108}
109#else
110#define do_system(cmd) system(cmd)
111#endif
112 56
113static int package_compare(const void *p1, const void *p2) 57/* NAME_HASH_PRIME, Stores package names and versions,
114{ 58 * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME,
115 return strcmp(((package_t *)p1)->package, 59 * as there a lot of duplicate version numbers */
116 ((package_t *)p2)->package); 60#define NAME_HASH_PRIME 16381
117} 61char *name_hashtable[NAME_HASH_PRIME + 1];
62
63/* PACKAGE_HASH_PRIME, Maximum number of unique packages,
64 * It must not be smaller than STATUS_HASH_PRIME,
65 * Currently only packages from status_hashtable are stored in here, but in
66 * future this may be used to store packages not only from a status file,
67 * but an available_hashtable, and even multiple packages files.
68 * Package can be stored more than once if they have different versions.
69 * e.g. The same package may have different versions in the status file
70 * and available file */
71#define PACKAGE_HASH_PRIME 10007
72typedef struct edge_s {
73 unsigned int operator:3;
74 unsigned int type:4;
75 unsigned int name:14;
76 unsigned int version:14;
77} edge_t;
78
79typedef struct common_node_s {
80 unsigned int name:14;
81 unsigned int version:14;
82 unsigned int num_of_edges:14;
83 edge_t **edge;
84} common_node_t;
85common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
86
87/* Currently it doesnt store packages that have state-status of not-installed
88 * So it only really has to be the size of the maximum number of packages
89 * likely to be installed at any one time, so there is a bit of leaway here */
90#define STATUS_HASH_PRIME 8191
91typedef struct status_node_s {
92 unsigned int package:14; /* has to fit PACKAGE_HASH_PRIME */
93 unsigned int status:14; /* has to fit STATUS_HASH_PRIME */
94} status_node_t;
95status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
96
97/* Even numbers are for 'extras', like ored dependecies or null */
98enum edge_type_e {
99 EDGE_NULL = 0,
100 EDGE_PRE_DEPENDS = 1,
101 EDGE_OR_PRE_DEPENDS = 2,
102 EDGE_DEPENDS = 3,
103 EDGE_OR_DEPENDS = 4,
104 EDGE_REPLACES = 5,
105 EDGE_PROVIDES = 7,
106 EDGE_CONFLICTS = 9,
107 EDGE_SUGGESTS = 11,
108 EDGE_RECOMMENDS = 13,
109 EDGE_ENHANCES = 15
110};
111enum operator_e {
112 VER_NULL = 0,
113 VER_EQUAL = 1,
114 VER_LESS = 2,
115 VER_LESS_EQUAL = 3,
116 VER_MORE = 4,
117 VER_MORE_EQUAL = 5,
118 VER_ANY = 6
119};
120
121enum dpkg_opt_e {
122 dpkg_opt_purge = 1,
123 dpkg_opt_remove = 2,
124 dpkg_opt_unpack = 4,
125 dpkg_opt_configure = 8,
126 dpkg_opt_install = 16,
127 dpkg_opt_package_name = 32,
128 dpkg_opt_filename = 64,
129 dpkg_opt_list_installed = 128,
130 dpkg_opt_force_ignore_depends = 256
131};
132
133typedef struct deb_file_s {
134 char *control_file;
135 char *filename;
136 unsigned int package:14;
137} deb_file_t;
118 138
119#ifdef DODEPENDS
120 139
121static char **depends_split(const char *dependsstr) 140void make_hash(const char *key, unsigned int *start, unsigned int *decrement, const int hash_prime)
122{ 141{
123 static char *dependsvec[DEPENDSMAX]; 142 unsigned long int hash_num = key[0];
124 char *p; 143 int len = strlen(key);
125 int i = 0; 144 int i;
126 145
127 dependsvec[0] = 0; 146 /* Maybe i should have uses a "proper" hashing algorithm here instead
128 if (dependsstr == 0) { 147 * of making one up myself, seems to be working ok though. */
129 goto end; 148 for(i = 1; i < len; i++) {
149 /* shifts the ascii based value and adds it to previous value
150 * shift amount is mod 24 because long int is 32 bit and data
151 * to be shifted is 8, dont want to shift data to where it has
152 * no effect*/
153 hash_num += ((key[i] + key[i-1]) << ((key[i] * i) % 24));
130 } 154 }
155 *start = (unsigned int) hash_num % hash_prime;
156 *decrement = (unsigned int) 1 + (hash_num % (hash_prime - 1));
157}
131 158
132 p = xstrdup(dependsstr); 159/* this adds the key to the hash table */
133 while (*p != 0 && *p != '\n') { 160int search_name_hashtable(const char *key)
134 if (*p != ' ') { 161{
135 if (*p == ',') { 162 unsigned int probe_address = 0;
136 *p = 0; 163 unsigned int probe_decrement = 0;
137 dependsvec[++i] = 0; 164
138 } else { 165 make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME);
139 if (dependsvec[i] == 0) { 166 while(name_hashtable[probe_address] != NULL) {
140 dependsvec[i] = p; 167 if (strcmp(name_hashtable[probe_address], key) == 0) {
141 } 168 return(probe_address);
142 }
143 } else { 169 } else {
144 *p = 0; /* eat the space... */ 170 probe_address -= probe_decrement;
171 if ((int)probe_address < 0) {
172 probe_address += NAME_HASH_PRIME;
173 }
145 } 174 }
146 p++;
147 } 175 }
148 *p = 0; 176 name_hashtable[probe_address] = xstrdup(key);
149 177
150end: 178 return(probe_address);
151 dependsvec[i+1] = 0;
152 return dependsvec;
153} 179}
154 180
155/* Topological sort algorithm: 181/* this DOESNT add the key to the hashtable
156 * ordered is the output list, pkgs is the dependency graph, pkg is 182 * TODO make it consistent with search_name_hashtable
157 * the current node
158 *
159 * recursively add all the adjacent nodes to the ordered list, marking
160 * each one as visited along the way
161 *
162 * yes, this algorithm looks a bit odd when all the params have the
163 * same type :-)
164 */ 183 */
165static void depends_sort_visit(package_t **ordered, package_t *pkgs, 184unsigned int search_status_hashtable(const char *key)
166 package_t *pkg)
167{ 185{
168 unsigned short i; 186 unsigned int probe_address = 0;
169 187 unsigned int probe_decrement = 0;
170 /* mark node as processing */ 188
171 pkg->color = color_grey; 189 make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME);
172 190 while(status_hashtable[probe_address] != NULL) {
173 /* visit each not-yet-visited node */ 191 if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) {
174 for (i = 0; i < pkg->requiredcount; i++) 192 break;
175 if (pkg->requiredfor[i]->color == color_white) 193 } else {
176 depends_sort_visit(ordered, pkgs, pkg->requiredfor[i]); 194 probe_address -= probe_decrement;
177 195 if ((int)probe_address < 0) {
178#if 0 196 probe_address += STATUS_HASH_PRIME;
179 /* add it to the list */ 197 }
180 newnode = (struct package_t *)xmalloc(sizeof(struct package_t)); 198 }
181 /* make a shallow copy */ 199 }
182 *newnode = *pkg; 200 return(probe_address);
183 newnode->next = *ordered;
184 *ordered = newnode;
185#endif
186
187 pkg->next = *ordered;
188 *ordered = pkg;
189
190 /* mark node as done */
191 pkg->color = color_black;
192} 201}
193 202
194static package_t *depends_sort(package_t *pkgs) 203/* Need to rethink version comparison, maybe the official dpkg has something i can use ? */
204int version_compare_part(const char *version1, const char *version2)
195{ 205{
196 /* TODO: it needs to break cycles in the to-be-installed package 206 int upstream_len1 = 0;
197 * graph... */ 207 int upstream_len2 = 0;
198 package_t *ordered = NULL; 208 char *name1_char;
199 package_t *pkg; 209 char *name2_char;
200 210 int len1 = 0;
201 for (pkg = pkgs; pkg != 0; pkg = pkg->next) { 211 int len2 = 0;
202 pkg->color = color_white; 212 int tmp_int;
213 int ver_num1;
214 int ver_num2;
215
216 if (version1 == NULL) {
217 version1 = xstrdup("");
218 }
219 if (version2 != NULL) {
220 version2 = xstrdup("");
203 } 221 }
204 for (pkg = pkgs; pkg != 0; pkg = pkg->next) { 222 upstream_len1 = strlen(version1);
205 if (pkg->color == color_white) { 223 upstream_len2 = strlen(version2);
206 depends_sort_visit(&ordered, pkgs, pkg); 224
225 while ((len1 < upstream_len1) || (len2 < upstream_len2)) {
226 /* Compare non-digit section */
227 tmp_int = strcspn(&version1[len1], "0123456789");
228 name1_char = xstrndup(&version1[len1], tmp_int);
229 len1 += tmp_int;
230 tmp_int = strcspn(&version2[len2], "0123456789");
231 name2_char = xstrndup(&version2[len2], tmp_int);
232 len2 += tmp_int;
233 tmp_int = strcmp(name1_char, name2_char);
234 free(name1_char);
235 free(name2_char);
236 if (tmp_int != 0) {
237 return(tmp_int);
238 }
239
240 /* Compare digits */
241 tmp_int = strspn(&version1[len1], "0123456789");
242 name1_char = xstrndup(&version1[len1], tmp_int);
243 len1 += tmp_int;
244 tmp_int = strspn(&version2[len2], "0123456789");
245 name2_char = xstrndup(&version2[len2], tmp_int);
246 len2 += tmp_int;
247 ver_num1 = atoi(name1_char);
248 ver_num2 = atoi(name2_char);
249 free(name1_char);
250 free(name2_char);
251 if (ver_num1 < ver_num2) {
252 return(-1);
207 } 253 }
254 else if (ver_num1 > ver_num2) {
255 return(1);
256 }
257 }
258 return(0);
259}
260
261/* if ver1 < ver2 return -1,
262 * if ver1 = ver2 return 0,
263 * if ver1 > ver2 return 1,
264 */
265int version_compare(const unsigned int ver1, const unsigned int ver2)
266{
267 char *ch_ver1 = name_hashtable[ver1];
268 char *ch_ver2 = name_hashtable[ver2];
269
270 char epoch1, epoch2;
271 char *deb_ver1, *deb_ver2;
272 char *ver1_ptr, *ver2_ptr;
273 char *upstream_ver1;
274 char *upstream_ver2;
275 int result;
276
277 /* Compare epoch */
278 if (ch_ver1[1] == ':') {
279 epoch1 = ch_ver1[0];
280 ver1_ptr = strchr(ch_ver1, ':') + 1;
281 } else {
282 epoch1 = '0';
283 ver1_ptr = ch_ver1;
284 }
285 if (ch_ver2[1] == ':') {
286 epoch2 = ch_ver2[0];
287 ver2_ptr = strchr(ch_ver2, ':') + 1;
288 } else {
289 epoch2 = '0';
290 ver2_ptr = ch_ver2;
291 }
292 if (epoch1 < epoch2) {
293 return(-1);
208 } 294 }
295 else if (epoch1 > epoch2) {
296 return(1);
297 }
298
299 /* Compare upstream version */
300 upstream_ver1 = xstrdup(ver1_ptr);
301 upstream_ver2 = xstrdup(ver2_ptr);
302
303 /* Chop off debian version, and store for later use */
304 deb_ver1 = strrchr(upstream_ver1, '-');
305 deb_ver2 = strrchr(upstream_ver2, '-');
306 if (deb_ver1) {
307 deb_ver1[0] = '\0';
308 deb_ver1++;
309 }
310 if (deb_ver2) {
311 deb_ver2[0] = '\0';
312 deb_ver2++;
313 }
314 result = version_compare_part(upstream_ver1, upstream_ver2);
315
316 free(upstream_ver1);
317 free(upstream_ver2);
209 318
210 /* Leaks the old list... return the new one... */ 319 if (result != 0) {
211 return ordered; 320 return(result);
321 }
322
323 /* Compare debian versions */
324 return(version_compare_part(deb_ver1, deb_ver2));
325}
326
327int test_version(const unsigned int version1, const unsigned int version2, const unsigned int operator)
328{
329 const int version_result = version_compare(version1, version2);
330 switch(operator) {
331 case (VER_ANY):
332 return(TRUE);
333 case (VER_EQUAL):
334 if (version_result == 0) {
335 return(TRUE);
336 }
337 break;
338 case (VER_LESS):
339 if (version_result < 0) {
340 return(TRUE);
341 }
342 break;
343 case (VER_LESS_EQUAL):
344 if (version_result <= 0) {
345 return(TRUE);
346 }
347 break;
348 case (VER_MORE):
349 if (version_result > 0) {
350 return(TRUE);
351 }
352 break;
353 case (VER_MORE_EQUAL):
354 if (version_result >= 0) {
355 return(TRUE);
356 }
357 break;
358 }
359 return(FALSE);
212} 360}
213 361
214 362
215/* resolve package dependencies -- 363int search_package_hashtable(const unsigned int name, const unsigned int version, const unsigned int operator)
216 * for each package in the list of packages to be installed, we parse its
217 * dependency info to determine if the dependent packages are either
218 * already installed, or are scheduled to be installed. If both tests fail
219 * than bail.
220 *
221 * The algorithm here is O(n^2*m) where n = number of packages to be
222 * installed and m is the # of dependencies per package. Not a terribly
223 * efficient algorithm, but given that at any one time you are unlikely
224 * to install a very large number of packages it doesn't really matter
225 */
226static package_t *depends_resolve(package_t *pkgs, void *status)
227{ 364{
228 package_t *pkg, *chk; 365 unsigned int probe_address = 0;
229 package_t dependpkg; 366 unsigned int probe_decrement = 0;
230 char **dependsvec; 367
231 int i; 368 make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME);
232 void *found; 369 while(package_hashtable[probe_address] != NULL) {
233 370 if (package_hashtable[probe_address]->name == name) {
234 for (pkg = pkgs; pkg != 0; pkg = pkg->next) { 371 if (operator == VER_ANY) {
235 dependsvec = depends_split(pkg->depends); 372 return(probe_address);
236 i = 0; 373 }
237 while (dependsvec[i] != 0) { 374 if (test_version(package_hashtable[probe_address]->version, version, operator)) {
238 /* Check for dependencies; first look for installed packages */ 375 return(probe_address);
239 dependpkg.package = dependsvec[i];
240 if (((found = tfind(&dependpkg, &status, package_compare)) == 0) ||
241 ((chk = *(package_t **)found) && (chk->state_flag & state_flag_ok) &&
242 (chk->state_status & state_status_installed))) {
243
244 /* if it fails, we look through the list of packages we are going to
245 * install */
246 for (chk = pkgs; chk != 0; chk = chk->next) {
247 if (strcmp(chk->package, dependsvec[i]) == 0 || (chk->provides &&
248 strncmp(chk->provides, dependsvec[i], strlen(dependsvec[i])) == 0)) {
249 if (chk->requiredcount >= DEPENDSMAX) {
250 error_msg("Too many dependencies for %s", chk->package);
251 return 0;
252 }
253 if (chk != pkg) {
254 chk->requiredfor[chk->requiredcount++] = pkg;
255 }
256 break;
257 }
258 }
259 if (chk == 0) {
260 error_msg("%s depends on %s, but it is not going to be installed", pkg->package, dependsvec[i]);
261 return 0;
262 }
263 } 376 }
264 i++; 377 }
378 probe_address -= probe_decrement;
379 if ((int)probe_address < 0) {
380 probe_address += PACKAGE_HASH_PRIME;
265 } 381 }
266 } 382 }
267 383 return(probe_address);
268 return depends_sort(pkgs);
269} 384}
270#endif 385
271 386/*
272/* Status file handling routines 387 * Create one new node and one new edge for every dependency.
273 *
274 * This is a fairly minimalistic implementation. there are two main functions
275 * that are supported:
276 *
277 * 1) reading the entire status file:
278 * the status file is read into memory as a binary-tree, with just the
279 * package and status info preserved
280 *
281 * 2) merging the status file
282 * control info from (new) packages is merged into the status file,
283 * replacing any pre-existing entries. when a merge happens, status info
284 * read using the status_read function is written back to the status file
285 */ 388 */
286static unsigned char status_parse(const char *line, const char **status_words) 389void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned int edge_type)
287{ 390{
288 unsigned char status_num; 391 char *line = xstrdup(whole_line);
289 int i = 0; 392 char *line2;
393 char *line_ptr1 = NULL;
394 char *line_ptr2 = NULL;
395 char *field;
396 char *field2;
397 char *version;
398 edge_t *edge;
399 int offset_ch;
400 int type;
401
402 field = strtok_r(line, ",", &line_ptr1);
403 do {
404 line2 = xstrdup(field);
405 field2 = strtok_r(line2, "|", &line_ptr2);
406 if ((edge_type == EDGE_DEPENDS) && (strcmp(field, field2) != 0)) {
407 type = EDGE_OR_DEPENDS;
408 }
409 else if ((edge_type == EDGE_PRE_DEPENDS) && (strcmp(field, field2) != 0)) {
410 type = EDGE_OR_PRE_DEPENDS;
411 } else {
412 type = edge_type;
413 }
414
415 do {
416 edge = (edge_t *) xmalloc(sizeof(edge_t));
417 edge->type = type;
418
419 /* Skip any extra leading spaces */
420 field2 += strspn(field2, " ");
421
422 /* Get dependency version info */
423 version = strchr(field2, '(');
424 if (version == NULL) {
425 edge->operator = VER_ANY;
426 /* Get the versions hash number, adding it if the number isnt already in there */
427 edge->version = search_name_hashtable("ANY");
428 } else {
429 /* Skip leading ' ' or '(' */
430 version += strspn(field2, " ");
431 version += strspn(version, "(");
432 /* Calculate length of any operator charactors */
433 offset_ch = strspn(version, "<=>");
434 /* Determine operator */
435 if (offset_ch > 0) {
436 if (strncmp(version, "=", offset_ch) == 0) {
437 edge->operator = VER_EQUAL;
438 }
439 else if (strncmp(version, "<<", offset_ch) == 0) {
440 edge->operator = VER_LESS;
441 }
442 else if (strncmp(version, "<=", offset_ch) == 0) {
443 edge->operator = VER_LESS_EQUAL;
444 }
445 else if (strncmp(version, ">>", offset_ch) == 0) {
446 edge->operator = VER_MORE;
447 }
448 else if (strncmp(version, ">=", offset_ch) == 0) {
449 edge->operator = VER_MORE_EQUAL;
450 } else {
451 error_msg_and_die("Illegal operator\n");
452 }
453 }
454 /* skip to start of version numbers */
455 version += offset_ch;
456 version += strspn(version, " ");
457
458 /* Truncate version at trailing ' ' or ')' */
459 version[strcspn(version, " )")] = '\0';
460 /* Get the versions hash number, adding it if the number isnt already in there */
461 edge->version = search_name_hashtable(version);
462 }
463
464 /* Get the dependency name */
465 field2[strcspn(field2, " (")] = '\0';
466 edge->name = search_name_hashtable(field2);
467
468 /* link the new edge to the current node */
469 parent_node->num_of_edges++;
470 parent_node->edge = xrealloc(parent_node->edge, sizeof(edge_t) * (parent_node->num_of_edges + 1));
471 parent_node->edge[parent_node->num_of_edges - 1] = edge;
472 } while ((field2 = strtok_r(NULL, "|", &line_ptr2)) != NULL);
473 free(line2);
474 } while ((field = strtok_r(NULL, ",", &line_ptr1)) != NULL);
475 free(line);
290 476
291 while (status_words[i] != 0) { 477 return;
292 if (strncmp(line, status_words[i], strlen(status_words[i])) == 0) { 478}
293 status_num = (char)i; 479
294 return(status_num); 480void free_package(common_node_t *node)
481{
482 int i;
483 if (node != NULL) {
484 for (i = 0; i < node->num_of_edges; i++) {
485 if (node->edge[i] != NULL) {
486 free(node->edge[i]);
487 }
488 }
489 if (node->edge != NULL) {
490 free(node->edge);
491 }
492 if (node != NULL) {
493 free(node);
295 } 494 }
296 i++;
297 } 495 }
298 /* parse error */
299 error_msg("Invalid status word");
300 return(0);
301} 496}
302 497
303/* 498unsigned int fill_package_struct(char *control_buffer)
304 * Read the buffered control file and parse it,
305 * filling parsed fields into the package structure
306 */
307static int fill_package_struct(package_t *package, const char *package_buffer)
308{ 499{
309 char *field = NULL; 500 common_node_t *new_node = (common_node_t *) xcalloc(1, sizeof(common_node_t));
501
502 char *field;
503 char *field_name;
504 char *field_value;
310 int field_start = 0; 505 int field_start = 0;
311 int field_length = 0; 506 int field_length;
507 int seperator_offset;
508 int num = -1;
509 int buffer_length = strlen(control_buffer);
510
511 new_node->version = search_name_hashtable("unknown");
512 while (field_start < buffer_length) {
513 field = read_package_field(&control_buffer[field_start]);
312 514
313 while ((field = read_package_field(&package_buffer[field_start])) != NULL) { 515 /* Setup start point for next field */
314 field_length = strlen(field); 516 field_length = strlen(field);
315 field_start += (field_length + 1); 517 field_start += (field_length + 1);
316 518
317 if (strlen(field) == 0) { 519 seperator_offset = strcspn(field, ":");
318 printf("empty line: *this shouldnt happen i dont think*\n"); 520 field_name = xstrndup(field, seperator_offset);
319 break; 521 field_value = field + seperator_offset + 1;
320 } 522 field_value += strspn(field_value, " \n\t");
321 523
322 /* these are common to both installed and uninstalled packages */ 524 if (strcmp(field_name, "Package") == 0) {
323 if (strstr(field, "Package: ") == field) { 525 new_node->name = search_name_hashtable(field_value);
324 package->package = strdup(field + 9);
325 }
326 else if (strstr(field, "Depends: ") == field) {
327 package->depends = strdup(field + 9);
328 }
329 else if (strstr(field, "Provides: ") == field) {
330 package->provides = strdup(field + 10);
331 } 526 }
332 /* This is specific to the Debian Installer. Ifdef? */ 527 else if (strcmp(field_name, "Version") == 0) {
333 else if (strstr(field, "installer-menu-item: ") == field) { 528 new_node->version = search_name_hashtable(field_value);
334 package->installer_menu_item = atoi(field + 21);
335 } 529 }
336 else if (strstr(field, "Description: ") == field) { 530 else if (strcmp(field_name, "Pre-Depends") == 0) {
337 package->description = strdup(field + 13); 531 add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS);
338 } 532 }
339 else if (strstr(field, "Priority: ") == field) { 533 else if (strcmp(field_name, "Depends") == 0) {
340 package->priority = strdup(field + 10); 534 add_split_dependencies(new_node, field_value, EDGE_DEPENDS);
341 } 535 }
342 else if (strstr(field, "Section: ") == field) { 536 else if (strcmp(field_name, "Replaces") == 0) {
343 package->section = strdup(field + 9); 537 add_split_dependencies(new_node, field_value, EDGE_REPLACES);
344 } 538 }
345 else if (strstr(field, "Installed-Size: ") == field) { 539 else if (strcmp(field_name, "Provides") == 0) {
346 package->installed_size = strdup(field + 16); 540 add_split_dependencies(new_node, field_value, EDGE_PROVIDES);
347 } 541 }
348 else if (strstr(field, "Maintainer: ") == field) { 542 else if (strcmp(field_name, "Conflicts") == 0) {
349 package->maintainer = strdup(field + 12); 543 add_split_dependencies(new_node, field_value, EDGE_CONFLICTS);
350 } 544 }
351 else if (strstr(field, "Version: ") == field) { 545 else if (strcmp(field_name, "Suggests") == 0) {
352 package->version = strdup(field + 9); 546 add_split_dependencies(new_node, field_value, EDGE_SUGGESTS);
353 }
354 else if (strstr(field, "Suggests: ") == field) {
355 package->suggests = strdup(field + 10);
356 }
357 else if (strstr(field, "Recommends: ") == field) {
358 package->recommends = strdup(field + 12);
359 }
360/* else if (strstr(field, "Conffiles: ") == field) {
361 package->conffiles = read_block(file);
362 package->conffiles = xcalloc(1, 1);
363 while ((field = strtok(NULL, "\n")) != NULL) {
364 package->long_description = xrealloc(package->conffiles,
365 strlen(package->conffiles) + strlen(field) + 1);
366 strcat(package->conffiles, field);
367 }
368 }
369*/
370 /* These are only in available file */
371 else if (strstr(field, "Architecture: ") == field) {
372 package->architecture = strdup(field + 14);
373 } 547 }
374 else if (strstr(field, "Filename: ") == field) { 548 else if (strcmp(field_name, "Recommends") == 0) {
375 package->filename = strdup(field + 10); 549 add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS);
376 } 550 }
377 else if (strstr(field, "MD5sum ") == field) { 551 else if (strcmp(field_name, "Enhances") == 0) {
378 package->md5sum = strdup(field + 7); 552 add_split_dependencies(new_node, field_value, EDGE_ENHANCES);
379 } 553 }
380 554 free(field_name);
381 /* This is only needed for status file */
382 if (strstr(field, "Status: ") == field) {
383 char *word_pointer;
384
385 word_pointer = strchr(field, ' ') + 1;
386 package->state_want = status_parse(word_pointer, state_words_want);
387 word_pointer = strchr(word_pointer, ' ') + 1;
388 package->state_flag = status_parse(word_pointer, state_words_flag);
389 word_pointer = strchr(word_pointer, ' ') + 1;
390 package->state_status = status_parse(word_pointer, state_words_status);
391 } else {
392 package->state_want = status_parse("purge", state_words_want);
393 package->state_flag = status_parse("ok", state_words_flag);
394 package->state_status = status_parse("not-installed", state_words_status);
395 }
396
397 free(field); 555 free(field);
398 } 556 }
399 return EXIT_SUCCESS; 557 if (new_node->version == search_name_hashtable("unknown")) {
558 free_package(new_node);
559 return(-1);
560 }
561 num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL);
562 if (package_hashtable[num] == NULL) {
563 package_hashtable[num] = new_node;
564 } else {
565 free_package(new_node);
566 }
567 return(num);
400} 568}
401 569
402extern void write_package(FILE *out_file, package_t *pkg) 570/* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
571unsigned int get_status(const unsigned int status_node, const int num)
403{ 572{
404 if (pkg->package) { 573 char *status_string = name_hashtable[status_hashtable[status_node]->status];
405 fprintf(out_file, "Package: %s\n", pkg->package); 574 char *state_sub_string;
406 } 575 unsigned int state_sub_num;
407 if ((pkg->state_want != 0) || (pkg->state_flag != 0)|| (pkg->state_status != 0)) { 576 int len;
408 fprintf(out_file, "Status: %s %s %s\n", 577 int i;
409 state_words_want[pkg->state_want - 1], 578
410 state_words_flag[pkg->state_flag - 1], 579 /* set tmp_string to point to the start of the word number */
411 state_words_status[pkg->state_status - 1]); 580 for (i = 1; i < num; i++) {
412 } 581 /* skip past a word */
413 if (pkg->depends) { 582 status_string += strcspn(status_string, " ");
414 fprintf(out_file, "Depends: %s\n", pkg->depends); 583 /* skip past the seperating spaces */
415 } 584 status_string += strspn(status_string, " ");
416 if (pkg->provides) {
417 fprintf(out_file, "Provides: %s\n", pkg->provides);
418 }
419 if (pkg->priority) {
420 fprintf(out_file, "Priority: %s\n", pkg->priority);
421 }
422 if (pkg->section) {
423 fprintf(out_file, "Section: %s\n", pkg->section);
424 }
425 if (pkg->section) {
426 fprintf(out_file, "Installed-Size: %s\n", pkg->installed_size);
427 }
428 if (pkg->maintainer) {
429 fprintf(out_file, "Maintainer: %s\n", pkg->maintainer);
430 }
431 if (pkg->source) {
432 fprintf(out_file, "Source: %s\n", pkg->source);
433 }
434 if (pkg->version) {
435 fprintf(out_file, "Version: %s\n", pkg->version);
436 }
437 if (pkg->pre_depends) {
438 fprintf(out_file, "Pre-depends: %s\n", pkg->pre_depends);
439 }
440 if (pkg->replaces) {
441 fprintf(out_file, "Replaces: %s\n", pkg->replaces);
442 }
443 if (pkg->recommends) {
444 fprintf(out_file, "Recommends: %s\n", pkg->recommends);
445 }
446 if (pkg->suggests) {
447 fprintf(out_file, "Suggests: %s\n", pkg->suggests);
448 }
449 if (pkg->conflicts) {
450 fprintf(out_file, "Conflicts: %s\n", pkg->conflicts);
451 }
452 if (pkg->conffiles) {
453 fprintf(out_file, "Conf-files: %s\n", pkg->conffiles);
454 }
455 if (pkg->architecture) {
456 fprintf(out_file, "Architecture: %s\n", pkg->architecture);
457 }
458 if (pkg->filename) {
459 fprintf(out_file, "Filename: %s\n", pkg->filename);
460 }
461 if (pkg->md5sum) {
462 fprintf(out_file, "MD5sum: %s\n", pkg->md5sum);
463 } 585 }
464 if (pkg->installer_menu_item) { 586 len = strcspn(status_string, " \n\0");
465 fprintf(out_file, "installer-main-menu %d\n", pkg->installer_menu_item); 587 state_sub_string = xstrndup(status_string, len);
588 state_sub_num = search_name_hashtable(state_sub_string);
589 free(state_sub_string);
590 return(state_sub_num);
591}
592
593void set_status(const unsigned int status_node_num, const char *new_value, const int position)
594{
595 const unsigned int new_value_len = strlen(new_value);
596 const unsigned int new_value_num = search_name_hashtable(new_value);
597 unsigned int want = get_status(status_node_num, 1);
598 unsigned int flag = get_status(status_node_num, 2);
599 unsigned int status = get_status(status_node_num, 3);
600 int want_len = strlen(name_hashtable[want]);
601 int flag_len = strlen(name_hashtable[flag]);
602 int status_len = strlen(name_hashtable[status]);
603 char *new_status;
604
605 switch (position) {
606 case (1):
607 want = new_value_num;
608 want_len = new_value_len;
609 break;
610 case (2):
611 flag = new_value_num;
612 flag_len = new_value_len;
613 break;
614 case (3):
615 status = new_value_num;
616 status_len = new_value_len;
617 break;
618 default:
619 error_msg_and_die("DEBUG ONLY: this shouldnt happen");
466 } 620 }
467 if (pkg->description) { 621
468 fprintf(out_file, "Description: %s\n", pkg->description); 622 new_status = (char *) xmalloc(want_len + flag_len + status_len + 3);
623 sprintf(new_status, "%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]);
624 status_hashtable[status_node_num]->status = search_name_hashtable(new_status);
625 return;
626}
627
628void index_status_file(const char *filename)
629{
630 FILE *status_file;
631 char *control_buffer;
632 char *status_line;
633 status_node_t *status_node = NULL;
634 unsigned int status_num;
635
636 status_file = fopen(filename, "r");
637 while ((control_buffer = fgets_str(status_file, "\n\n")) != NULL) {
638 const unsigned int package_num = fill_package_struct(control_buffer);
639 if (package_num != -1) {
640 status_node = xmalloc(sizeof(status_node_t));
641 /* fill_package_struct doesnt handle the status field */
642 status_line = strstr(control_buffer, "Status:");
643 if (status_line != NULL) {
644 status_line += 7;
645 status_line += strspn(status_line, " \n\t");
646 status_line = xstrndup(status_line, strcspn(status_line, "\n\0"));
647 status_node->status = search_name_hashtable(status_line);
648 free(status_line);
649 }
650 status_node->package = package_num;
651 status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]);
652 status_hashtable[status_num] = status_node;
653 }
654 free(control_buffer);
469 } 655 }
470 fputc('\n', out_file); 656 fclose(status_file);
471 pkg = pkg->next; 657 return;
472} 658}
473 659
474static void *status_read(void) 660
661char *get_depends_field(common_node_t *package, const int depends_type)
475{ 662{
476 FILE *f; 663 char *depends = NULL;
477 void *status = 0; 664 char *old_sep = (char *)xcalloc(1, 3);
478 package_t *m = 0, *p = 0, *t = 0; 665 char *new_sep = (char *)xcalloc(1, 3);
479 char *package_control_buffer = NULL; 666 int line_size = 0;
667 int depends_size;
480 668
481 if (getenv(udpkg_quiet) == NULL) { 669 int i;
482 printf("(Reading database...)\n");
483 }
484 670
485 if ((f = wfopen(statusfile, "r")) == NULL) { 671 for (i = 0; i < package->num_of_edges; i++) {
486 return(NULL); 672 if ((package->edge[i]->type == EDGE_OR_PRE_DEPENDS) ||
487 } 673 (package->edge[i]->type == EDGE_OR_DEPENDS)) {
674 }
488 675
489 while ( (package_control_buffer = fgets_str(f, "\n\n")) != NULL) { 676 if ((package->edge[i]->type == depends_type) ||
490 m = (package_t *)xcalloc(1, sizeof(package_t)); 677 (package->edge[i]->type == depends_type + 1)) {
491 fill_package_struct(m, package_control_buffer); 678 /* Check if its the first time through */
492 if (m->package) { 679
493 /* 680 depends_size = 8 + strlen(name_hashtable[package->edge[i]->name])
494 * If there is an item in the tree by this name, 681 + strlen(name_hashtable[package->edge[i]->version]);
495 * it must be a virtual package; insert real 682 line_size += depends_size;
496 * package in preference. 683 depends = (char *) xrealloc(depends, line_size + 1);
497 */ 684
498 tdelete(m, &status, package_compare); 685 /* Check to see if this dependency is the type we are looking for
499 tsearch(m, &status, package_compare); 686 * +1 to check for 'extra' types, e.g. ored dependecies */
500 if (m->provides) { 687 strcpy(old_sep, new_sep);
501 /* 688 if (package->edge[i]->type == depends_type) {
502 * A "Provides" triggers the insertion 689 strcpy(new_sep, ", ");
503 * of a pseudo package into the status 690 }
504 * binary-tree. 691 else if (package->edge[i]->type == depends_type + 1) {
505 */ 692 strcpy(new_sep, "| ");
506 p = (package_t *)xcalloc(1, sizeof(package_t)); 693 }
507 p->package = xstrdup(m->provides); 694
508 t = *(package_t **)tsearch(p, &status, package_compare); 695 if (depends_size == line_size) {
509 if (t != p) { 696 strcpy(depends, "");
510 free(p->package); 697 } else {
511 free(p); 698 if ((strcmp(old_sep, "| ") == 0) && (strcmp(new_sep, "| ") == 0)) {
699 strcat(depends, " | ");
512 } else { 700 } else {
513 /* 701 strcat(depends, ", ");
514 * Pseudo package status is the
515 * same as the status of the
516 * package providing it
517 * FIXME: (not quite right, if 2
518 * packages of different statuses
519 * provide it).
520 */
521 t->state_want = m->state_want;
522 t->state_flag = m->state_flag;
523 t->state_status = m->state_status;
524 } 702 }
525 } 703 }
526 } 704
527 else { 705 strcat(depends, name_hashtable[package->edge[i]->name]);
528 free(m); 706 if (strcmp(name_hashtable[package->edge[i]->version], "NULL") != 0) {
707 if (package->edge[i]->operator == VER_EQUAL) {
708 strcat(depends, " (= ");
709 }
710 else if (package->edge[i]->operator == VER_LESS) {
711 strcat(depends, " (<< ");
712 }
713 else if (package->edge[i]->operator == VER_LESS_EQUAL) {
714 strcat(depends, " (<= ");
715 }
716 else if (package->edge[i]->operator == VER_MORE) {
717 strcat(depends, " (>> ");
718 }
719 else if (package->edge[i]->operator == VER_MORE_EQUAL) {
720 strcat(depends, " (>= ");
721 } else {
722 strcat(depends, " (");
723 }
724 strcat(depends, name_hashtable[package->edge[i]->version]);
725 strcat(depends, ")");
726 }
529 } 727 }
530 } 728 }
531 fclose(f); 729 return(depends);
532 return status;
533} 730}
534 731
535static int status_merge(void *status, package_t *pkgs) 732/* This could do with a cleanup */
733void write_status_file(deb_file_t **deb_file)
536{ 734{
537 FILE *fin, *fout; 735 FILE *old_status_file = xfopen("/var/lib/dpkg/status", "r");
538 char *line = NULL; 736 FILE *new_status_file = xfopen("/var/lib/dpkg/status.udeb", "w");
539 package_t *pkg = 0, *statpkg = 0; 737 char *package_name;
540 package_t locpkg; 738 char *status_from_file;
739 char *control_buffer = NULL;
740 char *tmp_string;
741 char *field;
742 int status_num;
743 int field_length;
744 int field_start = 0;
745 int buffer_length;
746 int write_flag;
747 int i = 0;
541 748
542 if ((fout = wfopen(new_statusfile, "w")) == NULL) { 749 /* Update previously known packages */
543 return 0; 750 while ((control_buffer = fgets_str(old_status_file, "\n\n")) != NULL) {
544 } 751 tmp_string = strstr(control_buffer, "Package:") + 8;
545 if (getenv(udpkg_quiet) == NULL) { 752 tmp_string += strspn(tmp_string, " \n\t");
546 printf("(Updating database...)\n"); 753 package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n\0"));
547 } 754 write_flag = FALSE;
755
756 tmp_string = strstr(control_buffer, "Status:");
757 if (tmp_string != NULL) {
758 /* Seperate the status value from the control buffer */
759 tmp_string += 7;
760 tmp_string += strspn(tmp_string, " \n\t");
761 status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
762 } else {
763 status_from_file = NULL;
764 }
548 765
549 /* 766 /* Find this package in the status hashtable */
550 * Dont use wfopen here, handle errors ourself 767 status_num = search_status_hashtable(package_name);
551 */ 768 if (status_hashtable[status_num] != NULL) {
552 if ((fin = fopen(statusfile, "r")) != NULL) { 769 const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status];
553 while (((line = get_line_from_file(fin)) != NULL) && !feof(fin)) { 770 if (strcmp(status_from_file, status_from_hashtable) != 0) {
554 chomp(line); /* trim newline */ 771 /* New status isnt exactly the same as old status */
555 /* If we see a package header, find out if it's a package 772 const int state_status = get_status(status_num, 3);
556 * that we have processed. if so, we skip that block for 773 if ((strcmp("installed", name_hashtable[state_status]) == 0) ||
557 * now (write it at the end). 774 (strcmp("unpacked", name_hashtable[state_status]) == 0)) {
558 * 775 /* We need to add the control file from the package */
559 * we also look at packages in the status cache and update 776 i = 0;
560 * their status fields 777 while(deb_file[i] != NULL) {
561 */ 778 if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) {
562 if (strstr(line, "Package: ") == line) { 779 char *last_char;
563 for (pkg = pkgs; pkg != 0 && strcmp(line + 9, 780 /* Write a status file entry with a modified status */
564 pkg->package) != 0; pkg = pkg->next) ; 781 /* remove trailing \n's */
565 782 while(1) {
566 locpkg.package = line + 9; 783 last_char = last_char_is(deb_file[i]->control_file, '\n');
567 statpkg = tfind(&locpkg, &status, package_compare); 784 if (last_char) {
568 785 *last_char = '\0';
569 /* note: statpkg should be non-zero, unless the status 786 } else {
570 * file was changed while we are processing (no locking 787 break;
571 * is currently done... 788 }
572 */ 789 }
573 if (statpkg != 0) { 790 fputs(deb_file[i]->control_file, new_status_file);
574 statpkg = *(package_t **)statpkg; 791 set_status(status_num, "ok", 2);
792 fprintf(new_status_file, "\nStatus: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
793 write_flag = TRUE;
794 break;
795 }
796 i++;
797 }
798 /* This is temperary, debugging only */
799 if (deb_file[i] == NULL) {
800 error_msg_and_die("ALERT: Couldnt find a control file, your status file may be broken, status may be incorrect for %s", package_name);
801 }
802 }
803 else if (strcmp("not-installed", name_hashtable[state_status]) == 0) {
804 /* Only write the Package, Status, Priority and Section lines */
805 fprintf(new_status_file, "Package: %s\n", package_name);
806 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
807 buffer_length = strlen(control_buffer);
808 while (field_start < buffer_length) {
809 field = read_package_field(&control_buffer[field_start]);
810 field_length = strlen(field);
811 field_start += (field_length + 1);
812 if (strncmp(field, "Priority:", 9) == 0) {
813 fprintf(new_status_file, "Priority:%s\n", field + 9);
814 }
815 if (strncmp(field, "Section:", 8) == 0) {
816 fprintf(new_status_file, "Section:%s\n", field + 8);
817 }
818 }
819 write_flag = TRUE;
820 fputs("\n", new_status_file);
821 }
822 else if (strcmp("config-files", name_hashtable[state_status]) == 0) {
823 /* only change the status line */
824 buffer_length = strlen(control_buffer);
825 while (field_start < buffer_length) {
826 field = read_package_field(&control_buffer[field_start]);
827 /* Setup start point for next field */
828 field_length = strlen(field);
829 field_start += (field_length + 1);
830 if (strncmp(field, "Status:", 7) == 0) {
831 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
832 } else {
833 fprintf(new_status_file, "%s\n", field);
834 }
835 free(field);
836 }
837 write_flag = TRUE;
838 fputs("\n", new_status_file);
575 } 839 }
576 } 840 }
577 if (pkg != 0) { 841 }
578 continue; 842
579 } 843 /* If the package from the status file wasnt handle above, do it now*/
580 if (strstr(line, "Status: ") == line && statpkg != 0) { 844 if (write_flag == FALSE) {
581 snprintf(line, sizeof(line), "Status: %s %s %s", 845 fprintf(new_status_file, "%s\n\n", control_buffer);
582 state_words_want[statpkg->state_want - 1], 846 }
583 state_words_flag[statpkg->state_flag - 1], 847
584 state_words_status[statpkg->state_status - 1]); 848 if (status_from_file != NULL) {
849 free(status_from_file);
850 }
851 free(package_name);
852 free(control_buffer);
853 }
854 /* Write any new packages */
855 for(i = 0; deb_file[i] != NULL; i++) {
856 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]);
857 if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) {
858 char *last_char;
859 /* remove trailing \n's */
860 while(1) {
861 last_char = last_char_is(deb_file[i]->control_file, '\n');
862 if (last_char) {
863 *last_char = '\0';
864 } else {
865 break;
866 }
585 } 867 }
586 fprintf(fout, "%s\n", line); 868
869 fputs(deb_file[i]->control_file, new_status_file);
870 set_status(status_num, "ok", 2);
871 fprintf(new_status_file, "\nStatus: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
587 } 872 }
588 fclose(fin);
589 } 873 }
590 free(line); 874 fclose(old_status_file);
875 fclose(new_status_file);
591 876
592 // Print out packages we processed.
593 for (pkg = pkgs; pkg != 0; pkg = pkg->next) {
594 write_package(fout, pkg);
595 }
596 fclose(fout);
597 877
598 /* 878 /* Create a seperate backfile to dpkg */
599 * Its ok if renaming statusfile fails becasue it doesnt exist 879 if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) {
600 */
601 if (rename(statusfile, bak_statusfile) == -1) {
602 struct stat stat_buf; 880 struct stat stat_buf;
603 if (stat(statusfile, &stat_buf) == 0) { 881 if (stat("/var/lib/dpkg/status", &stat_buf) == 0) {
604 error_msg("Couldnt create backup status file"); 882 error_msg_and_die("Couldnt create backup status file");
605 return(EXIT_FAILURE);
606 } 883 }
884 /* Its ok if renaming the status file fails becasue status
885 * file doesnt exist, maybe we are starting from scratch */
607 error_msg("No status file found, creating new one"); 886 error_msg("No status file found, creating new one");
608 } 887 }
609 888
610 if (rename(new_statusfile, statusfile) == -1) { 889 if (rename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status") == -1) {
611 error_msg("Couldnt create status file"); 890 error_msg_and_die("DANGER: Couldnt create status file, you need to manually repair your status file");
612 return(EXIT_FAILURE);
613 } 891 }
614 return(EXIT_SUCCESS);
615} 892}
616 893
617static int is_file(const char *fn) 894int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
618{ 895{
619 struct stat statbuf; 896 int *conflicts = NULL;
897 int conflicts_num = 0;
898 int state_status;
899 int state_flag;
900 int state_want;
901 unsigned int status_package_num;
902 int i = deb_start;
903 int j, k;
904
905 /* Check for conflicts
906 * TODO: TEST if conflicts with other packages to be installed
907 *
908 * Add install packages and the packages they provide
909 * to the list of files to check conflicts for
910 */
620 911
621 if (stat(fn, &statbuf) < 0) { 912 /* Create array of package numbers to check against
622 return 0; 913 * installed package for conflicts*/
914 while (deb_file[i] != NULL) {
915 const unsigned int package_num = deb_file[i]->package;
916 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
917 conflicts[conflicts_num] = package_num;
918 conflicts_num++;
919 /* add provides to conflicts list */
920 for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) {
921 if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) {
922 const int conflicts_package_num = search_package_hashtable(
923 package_hashtable[package_num]->edge[j]->name,
924 package_hashtable[package_num]->edge[j]->version,
925 package_hashtable[package_num]->edge[j]->operator);
926 if (package_hashtable[conflicts_package_num] == NULL) {
927 /* create a new package */
928 common_node_t *new_node = (common_node_t *) xmalloc(sizeof(common_node_t));
929 new_node->name = package_hashtable[package_num]->edge[j]->name;
930 new_node->version = package_hashtable[package_num]->edge[j]->version;
931 new_node->num_of_edges = 0;
932 new_node->edge = NULL;
933 package_hashtable[conflicts_package_num] = new_node;
934 }
935 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
936 conflicts[conflicts_num] = conflicts_package_num;
937 conflicts_num++;
938 }
939 }
940 i++;
623 } 941 }
624 return S_ISREG(statbuf.st_mode); 942
943 /* Check conflicts */
944 for (i = 0; i < conflicts_num; i++) {
945 /* Check for conflicts */
946 for (j = 0; j < STATUS_HASH_PRIME; j++) {
947 if (status_hashtable[j] == NULL) {
948 continue;
949 }
950 state_flag = get_status(j, 2);
951 state_status = get_status(j, 3);
952 if ((state_status != search_name_hashtable("installed"))
953 && (state_flag != search_name_hashtable("want-install"))) {
954 continue;
955 }
956 status_package_num = status_hashtable[j]->package;
957 for (k = 0; k < package_hashtable[status_package_num]->num_of_edges; k++) {
958 const edge_t *package_edge = package_hashtable[status_package_num]->edge[k];
959 if (package_edge->type != EDGE_CONFLICTS) {
960 continue;
961 }
962 if (package_edge->name != package_hashtable[conflicts[i]]->name) {
963 continue;
964 }
965 /* There is a conflict against the package name
966 * check if version conflict as well */
967 if (test_version(package_hashtable[deb_file[i]->package]->version,
968 package_edge->version, package_edge->operator)) {
969 error_msg_and_die("Package %s conflict with %s",
970 name_hashtable[package_hashtable[deb_file[i]->package]->name],
971 name_hashtable[package_hashtable[status_package_num]->name]);
972 }
973 }
974 }
975 }
976
977 /* Check dependendcies */
978 i = 0;
979 while (deb_file[i] != NULL) {
980 const common_node_t *package_node = package_hashtable[deb_file[i]->package];
981 int status_num = 0;
982
983 for (j = 0; j < package_hashtable[deb_file[i]->package]->num_of_edges; j++) {
984 const edge_t *package_edge = package_node->edge[j];
985 const unsigned int package_num = search_package_hashtable(package_edge->name,
986 package_edge->version, package_edge->operator);
987
988 status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
989 state_status = get_status(status_num, 3);
990 state_want = get_status(status_num, 1);
991 switch (package_edge->type) {
992 case(EDGE_PRE_DEPENDS):
993 case(EDGE_OR_PRE_DEPENDS):
994 /* It must be already installed */
995 /* NOTE: This is untested, nothing apropriate in my status file */
996 if ((package_hashtable[package_num] == NULL) || (state_status != search_name_hashtable("installed"))) {
997 error_msg_and_die("Package %s pre-depends on %s, but it is not installed",
998 name_hashtable[package_node->name],
999 name_hashtable[package_edge->name]);
1000 }
1001 break;
1002 case(EDGE_DEPENDS):
1003 case(EDGE_OR_DEPENDS):
1004 /* It must be already installed, or to be installed */
1005 if ((package_hashtable[package_num] == NULL) ||
1006 ((state_status != search_name_hashtable("installed")) &&
1007 (state_want != search_name_hashtable("want_install")))) {
1008 error_msg_and_die("Package %s depends on %s, but it is not installed, or flaged to be installed",
1009 name_hashtable[package_node->name],
1010 name_hashtable[package_edge->name]);
1011 }
1012 break;
1013 }
1014 }
1015 i++;
1016 }
1017 return(TRUE);
625} 1018}
626 1019
627static int dpkg_doconfigure(package_t *pkg) 1020char **create_list(const char *filename)
628{ 1021{
629 int r; 1022 FILE *list_stream;
630 char postinst[1024]; 1023 char **file_list = xmalloc(sizeof(char *));
631 char buf[1024]; 1024 char *line = NULL;
632 1025 char *last_char;
633 DPRINTF("Configuring %s\n", pkg->package); 1026 int length = 0;
634 pkg->state_status = 0; 1027 int count = 0;
635 snprintf(postinst, sizeof(postinst), "%s%s.postinst", infodir, pkg->package);
636 1028
637 if (is_file(postinst)) { 1029 list_stream = fopen(filename, "r");
638 snprintf(buf, sizeof(buf), "%s configure", postinst); 1030 if (list_stream == NULL) {
639 if ((r = do_system(buf)) != 0) { 1031 return(NULL);
640 error_msg("postinst exited with status %d\n", r); 1032 }
641 pkg->state_status = state_status_halfconfigured; 1033 while (getline(&line, &length, list_stream) != -1) {
642 return 1; 1034 file_list = xrealloc(file_list, sizeof(char *) * (length + 1));
1035 last_char = last_char_is(line, '\n');
1036 if (last_char) {
1037 *last_char = '\0';
643 } 1038 }
1039 file_list[count] = xstrdup(line);
1040 free(line);
1041 count++;
1042 length = 0;
1043 }
1044 fclose(list_stream);
1045 if (count == 0) {
1046 return(NULL);
1047 } else {
1048 file_list[count] = NULL;
1049 return(file_list);
644 } 1050 }
645 pkg->state_status = state_status_installed;
646
647 return 0;
648} 1051}
649 1052
650static int dpkg_dounpack(package_t *pkg) 1053/* maybe i should try and hook this into remove_file.c somehow */
1054int remove_file_array(char **remove_names, char **exclude_names)
651{ 1055{
652 FILE *out_stream; 1056 struct stat path_stat;
653 char *info_prefix; 1057 int match_flag;
654 int status = TRUE; 1058 int remove_flag = FALSE;
655 int r = 0; 1059 int i,j;
656
657 DPRINTF("Unpacking %s\n", pkg->package);
658 1060
659 /* extract the data file */ 1061 if (remove_names == NULL) {
660 deb_extract(pkg->filename, stdout, (extract_data_tar_gz | extract_all_to_fs), "/", NULL); 1062 return(FALSE);
1063 }
1064 for (i = 0; remove_names[i] != NULL; i++) {
1065 match_flag = FALSE;
1066 if (exclude_names != NULL) {
1067 for (j = 0; exclude_names[j] != 0; j++) {
1068 if (strcmp(remove_names[i], exclude_names[j]) == 0) {
1069 match_flag = TRUE;
1070 break;
1071 }
1072 }
1073 }
1074 if (!match_flag) {
1075 if (lstat(remove_names[i], &path_stat) < 0) {
1076 continue;
1077 }
1078 if (S_ISDIR(path_stat.st_mode)) {
1079 if (rmdir(remove_names[i]) != -1) {
1080 remove_flag = TRUE;
1081 }
1082 } else {
1083 if (unlink(remove_names[i]) != -1) {
1084 remove_flag = TRUE;
1085 }
1086 }
1087 }
1088 }
1089 return(remove_flag);
1090}
661 1091
662 /* extract the control files */ 1092int run_package_script(const char *package_name, const char *script_type)
663 info_prefix = (char *) malloc(strlen(pkg->package) + strlen(infodir) + 2 + 5 + 1); 1093{
664 sprintf(info_prefix, "%s/%s.", infodir, pkg->package); 1094 struct stat path_stat;
665 deb_extract(pkg->filename, stdout, (extract_control_tar_gz | extract_all_to_fs), info_prefix, NULL); 1095 char *script_path;
666 1096
667 /* Create the list file */ 1097 script_path = xmalloc(strlen(package_name) + strlen(script_type) + 21);
668 strcat(info_prefix, "list"); 1098 sprintf(script_path, "/var/lib/dpkg/info/%s.%s", package_name, script_type);
669 out_stream = wfopen(info_prefix, "w");
670 deb_extract(pkg->filename, out_stream, (extract_data_tar_gz | extract_list), NULL, NULL);
671 fclose(out_stream);
672 1099
673 pkg->state_want = state_want_install; 1100 /* If the file doesnt exist is isnt a fatal */
674 pkg->state_flag = state_flag_ok; 1101 if (lstat(script_path, &path_stat) < 0) {
675 1102 return(EXIT_SUCCESS);
676 if (status == TRUE) {
677 pkg->state_status = state_status_unpacked;
678 } else { 1103 } else {
679 pkg->state_status = state_status_halfinstalled; 1104 return(system(script_path));
680 } 1105 }
681
682 return r;
683} 1106}
684 1107
685/* 1108void all_control_list(char **remove_files, const char *package_name)
686 * Extract and parse the control file from control.tar.gz
687 */
688static int dpkg_read_control(package_t *pkg)
689{ 1109{
690 FILE *pkg_file; 1110 const char *all_extensions[11] = {"preinst", "postinst", "prerm", "postrm",
691 char *control_buffer = NULL; 1111 "list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL };
1112 int i;
692 1113
693 if ((pkg_file = wfopen(pkg->filename, "r")) == NULL) { 1114 /* Create a list of all /var/lib/dpkg/info/<package> files */
694 return EXIT_FAILURE; 1115 for(i = 0; i < 10; i++) {
1116 remove_files[i] = xmalloc(strlen(package_name) + strlen(all_extensions[i]) + 21);
1117 sprintf(remove_files[i], "/var/lib/dpkg/info/%s.%s", package_name, all_extensions[i]);
695 } 1118 }
696 control_buffer = deb_extract(pkg->filename, stdout, (extract_control_tar_gz | extract_one_to_buffer), NULL, "./control"); 1119 remove_files[10] = NULL;
697 fill_package_struct(pkg, control_buffer);
698 return EXIT_SUCCESS;
699} 1120}
700 1121
701static int dpkg_unpack(package_t *pkgs, void *status) 1122void remove_package(const unsigned int package_num)
702{ 1123{
703 int r = 0; 1124 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
704 package_t *pkg; 1125 const unsigned int status_num = search_status_hashtable(package_name);
705 1126 const int package_name_length = strlen(package_name);
706 for (pkg = pkgs; pkg != 0; pkg = pkg->next) { 1127 char **remove_files;
707 dpkg_read_control(pkg); 1128 char **exclude_files;
708 if ((r = dpkg_dounpack(pkg)) != 0 ) { 1129 char list_name[package_name_length + 25];
709 break; 1130 char conffile_name[package_name_length + 30];
710 } 1131 int return_value;
1132
1133 /* run prerm script */
1134 return_value = run_package_script(package_name, "prem");
1135 if (return_value == -1) {
1136 error_msg_and_die("script failed, prerm failure");
711 } 1137 }
712 status_merge(status, pkgs);
713 1138
714 return r; 1139 /* Create a list of files to remove, and a seperate list of those to keep */
715} 1140 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
1141 remove_files = create_list(list_name);
716 1142
717static int dpkg_configure(package_t *pkgs, void *status) 1143 sprintf(conffile_name, "/var/lib/dpkg/info/%s.conffiles", package_name);
718{ 1144 exclude_files = create_list(conffile_name);
719 int r = 0;
720 void *found;
721 package_t *pkg;
722 1145
723 for (pkg = pkgs; pkg != 0 && r == 0; pkg = pkg->next) { 1146 /* Some directories cant be removed straight away, so do multiple passes */
724 found = tfind(pkg, &status, package_compare); 1147 while (remove_file_array(remove_files, exclude_files) == TRUE);
725 1148
726 if (found == 0) { 1149 /* Create a list of all /var/lib/dpkg/info/<package> files */
727 error_msg("Trying to configure %s, but it is not installed", pkg->package); 1150 remove_files = xmalloc(11);
728 r = 1; 1151 all_control_list(remove_files, package_name);
729 }
730 /* configure the package listed in the status file;
731 * not pkg, as we have info only for the latter
732 */
733 else {
734 r = dpkg_doconfigure(*(package_t **)found);
735 }
736 }
737 status_merge(status, 0);
738 1152
739 return r; 1153 /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */
1154 exclude_files = xmalloc(sizeof(char*) * 3);
1155 exclude_files[0] = xstrdup(conffile_name);
1156 exclude_files[1] = xmalloc(package_name_length + 27);
1157 sprintf(exclude_files[1], "/var/lib/dpkg/info/%s.postrm", package_name);
1158 exclude_files[2] = NULL;
1159
1160 remove_file_array(remove_files, exclude_files);
1161
1162 /* rename <package>.conffile to <package>.list */
1163 rename(conffile_name, list_name);
1164
1165 /* Change package status */
1166 set_status(status_num, "deinstall", 1);
1167 set_status(status_num, "config-files", 3);
740} 1168}
741 1169
742static int dpkg_install(package_t *pkgs, void *status) 1170void purge_package(const unsigned int package_num)
743{ 1171{
744 package_t *p, *ordered = 0; 1172 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
745 1173 const unsigned int status_num = search_status_hashtable(package_name);
746 /* Stage 1: parse all the control information */ 1174 char **remove_files;
747 for (p = pkgs; p != 0; p = p->next) { 1175 char **exclude_files;
748 dpkg_read_control(p); 1176 char list_name[strlen(package_name) + 25];
1177
1178 /* run prerm script */
1179 if (run_package_script(package_name, "prerm") == -1) {
1180 error_msg_and_die("script failed, prerm failure");
749 } 1181 }
750 1182
751 /* Stage 2: resolve dependencies */ 1183 /* Create a list of files to remove */
752#ifdef DODEPENDS 1184 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
753 ordered = depends_resolve(pkgs, status); 1185 remove_files = create_list(list_name);
754#else
755 ordered = pkgs;
756#endif
757
758 /* Stage 3: install */
759 for (p = ordered; p != 0; p = p->next) {
760 p->state_want = state_want_install;
761 1186
762 /* for now the flag is always set to ok... this is probably 1187 exclude_files = xmalloc(1);
763 * not what we want 1188 exclude_files[0] = NULL;
764 */
765 p->state_flag = state_flag_ok;
766 1189
767 DPRINTF("Installing %s\n", p->package); 1190 /* Some directories cant be removed straight away, so do multiple passes */
768 if (dpkg_dounpack(p) != 0) { 1191 while (remove_file_array(remove_files, exclude_files) == TRUE);
769 perror_msg(p->filename);
770 }
771 1192
772 if (dpkg_doconfigure(p) != 0) { 1193 /* Create a list of all /var/lib/dpkg/info/<package> files */
773 perror_msg(p->filename); 1194 remove_files = xmalloc(11);
774 } 1195 all_control_list(remove_files, package_name);
1196 remove_file_array(remove_files, exclude_files);
1197
1198 /* run postrm script */
1199 if (run_package_script(package_name, "postrm") == -1) {
1200 error_msg_and_die("postrm fialure.. set status to what?");
775 } 1201 }
1202 /* Change package status */
1203 set_status(status_num, "purge", 1);
1204 set_status(status_num, "not-installed", 3);
1205}
1206
1207void unpack_package(deb_file_t *deb_file)
1208{
1209 const unsigned int package_name_num = package_hashtable[deb_file->package]->name;
1210 const char *package_name = name_hashtable[package_name_num];
1211 const unsigned int status_num = search_status_hashtable(package_name);
1212 unsigned int status_package_num;
776 1213
777 if (ordered != 0) { 1214 FILE *out_stream;
778 status_merge(status, pkgs); 1215 char *info_prefix;
1216
1217 /* If existing version, remove it first */
1218 if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) {
1219 /* Package is already installed, remove old version first */
1220 printf("Preparing to replace %s %s (using %s) ...\n", package_name,
1221 name_hashtable[package_hashtable[status_package_num]->version],
1222 deb_file->filename);
1223 remove_package(status_package_num);
1224 } else {
1225 printf("Unpacking %s (from %s) ...\n", package_name, deb_file->filename);
779 } 1226 }
780 1227
781 return 0; 1228 /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
1229 info_prefix = (char *) xmalloc(sizeof(package_name) + 20 + 4 + 1);
1230 sprintf(info_prefix, "/var/lib/dpkg/info/%s.", package_name);
1231 deb_extract(deb_file->filename, stdout, (extract_quiet | extract_control_tar_gz | extract_all_to_fs), info_prefix, NULL);
1232
1233 /* Extract data.tar.gz to the root directory */
1234 deb_extract(deb_file->filename, stdout, (extract_quiet | extract_data_tar_gz | extract_all_to_fs), "/", NULL);
1235
1236 /* Create the list file */
1237 strcat(info_prefix, "list");
1238
1239 out_stream = wfopen(info_prefix, "w");
1240 deb_extract(deb_file->filename, out_stream, (extract_quiet | extract_data_tar_gz | extract_list), NULL, NULL);
1241 fclose(out_stream);
1242
1243 /* change status */
1244 set_status(status_num, "install", 1);
1245 set_status(status_num, "unpacked", 3);
782} 1246}
783 1247
784/* 1248void configure_package(deb_file_t *deb_file)
785 * Not implemented yet
786 *
787static int dpkg_remove(package_t *pkgs, void *status)
788{ 1249{
789 package_t *p; 1250 int return_value;
790 1251 int status_num;
791 for (p = pkgs; p != 0; p = p->next) 1252
792 { 1253 /* Run the preinst prior to extracting */
1254 return_value = run_package_script(name_hashtable[package_hashtable[deb_file->package]->name], "postinst");
1255 if (return_value == -1) {
1256 /* TODO: handle failure gracefully */
1257 error_msg_and_die("postrm fialure.. set status to what?");
793 } 1258 }
794 status_merge(status, 0);
795 1259
796 return 0; 1260 /* Change status to reflect success */
1261 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file->package]->name]);
1262 set_status(status_num, "install", 1);
1263 set_status(status_num, "installed", 3);
797} 1264}
798*/
799 1265
800extern int dpkg_main(int argc, char **argv) 1266extern int dpkg_main(int argc, char **argv)
801{ 1267{
802 const int arg_install = 1; 1268 deb_file_t **deb_file = NULL;
803 const int arg_unpack = 2; 1269 status_node_t *status_node;
804 const int arg_configure = 4; 1270 char opt = 0;
805 1271 int package_num;
806 package_t *p, *packages = NULL; 1272 int dpkg_opt = 0;
807 void *status = NULL; 1273 int deb_count = 0;
808 int opt = 0; 1274 int state_status;
809 int optflag = 0; 1275 int status_num;
1276 int i;
810 1277
811 while ((opt = getopt(argc, argv, "iruc")) != -1) { 1278 while ((opt = getopt(argc, argv, "cF:ilPru")) != -1) {
812 switch (opt) { 1279 switch (opt) {
1280 case 'c':
1281 dpkg_opt |= dpkg_opt_configure;
1282 dpkg_opt |= dpkg_opt_package_name;
1283 break;
1284 case 'F': // equivalent to --force in official dpkg
1285 if (strcmp(optarg, "depends") == 0) {
1286 dpkg_opt |= dpkg_opt_force_ignore_depends;
1287 }
813 case 'i': 1288 case 'i':
814 optflag |= arg_install; 1289 dpkg_opt |= dpkg_opt_install;
1290 dpkg_opt |= dpkg_opt_filename;
815 break; 1291 break;
816 case 'u': 1292 case 'l':
817 optflag |= arg_unpack; 1293 dpkg_opt |= dpkg_opt_list_installed;
1294 case 'P':
1295 dpkg_opt |= dpkg_opt_purge;
1296 dpkg_opt |= dpkg_opt_package_name;
818 break; 1297 break;
819 case 'c': 1298 case 'r':
820 optflag |= arg_configure; 1299 dpkg_opt |= dpkg_opt_remove;
1300 dpkg_opt |= dpkg_opt_package_name;
1301 break;
1302 case 'u': /* Equivalent to --unpack in official dpkg */
1303 dpkg_opt |= dpkg_opt_unpack;
1304 dpkg_opt |= dpkg_opt_filename;
821 break; 1305 break;
822 default: 1306 default:
823 show_usage(); 1307 show_usage();
824 } 1308 }
825 } 1309 }
826 1310
1311 if ((argc == optind) || (dpkg_opt == 0)) {
1312 show_usage();
1313 }
1314
1315 puts("(Reading database ... xxxxx files and directories installed.)");
1316 index_status_file("/var/lib/dpkg/status");
1317
1318 /* Read arguments and store relevant info in structs */
1319 deb_file = xmalloc(sizeof(deb_file_t));
827 while (optind < argc) { 1320 while (optind < argc) {
828 p = (package_t *) xcalloc(1, sizeof(package_t)); 1321 deb_file[deb_count] = (deb_file_t *) xmalloc(sizeof(deb_file_t));
829 if (optflag & arg_configure) { 1322 if (dpkg_opt & dpkg_opt_filename) {
830 p->package = xstrdup(argv[optind]); 1323 deb_file[deb_count]->filename = xstrdup(argv[optind]);
831 } else { 1324 deb_file[deb_count]->control_file = deb_extract(argv[optind], stdout, (extract_control_tar_gz | extract_one_to_buffer), NULL, "./control");
832 p->filename = xstrdup(argv[optind]); 1325 if (deb_file[deb_count]->control_file == NULL) {
1326 error_msg_and_die("Couldnt extract control file");
1327 }
1328 package_num = fill_package_struct(deb_file[deb_count]->control_file);
1329
1330 if (package_num == -1) {
1331 error_msg("Invalid control file in %s", argv[optind]);
1332 continue;
1333 }
1334 deb_file[deb_count]->package = (unsigned int) package_num;
1335 /* Add the package to the status hashtable */
1336 if ((dpkg_opt & dpkg_opt_unpack) || (dpkg_opt & dpkg_opt_install)) {
1337 status_node = (status_node_t *) xmalloc(sizeof(status_node_t));
1338 status_node->package = deb_file[deb_count]->package;
1339 /* use reinstreq isnt changed to "ok" until the package control info
1340 * is written to the status file*/
1341 status_node->status = search_name_hashtable("install reinstreq not-installed");
1342
1343 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1344 status_hashtable[status_num] = status_node;
1345 }
833 } 1346 }
834 p->next = packages; 1347 else if (dpkg_opt & dpkg_opt_package_name) {
835 packages = p; 1348 deb_file[deb_count]->filename = NULL;
1349 deb_file[deb_count]->control_file = NULL;
1350 deb_file[deb_count]->package = search_package_hashtable(
1351 search_name_hashtable(argv[optind]),
1352 search_name_hashtable("ANY"), VER_ANY);
1353 if (package_hashtable[deb_file[deb_count]->package] == NULL) {
1354 error_msg_and_die("unknown package, %s\n", argv[optind]);
1355 }
1356 state_status = get_status(search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]), 3);
836 1357
1358 /* check package status is "installed" */
1359 if (dpkg_opt & dpkg_opt_remove) {
1360 if ((strcmp(name_hashtable[state_status], "not-installed") == 0) ||
1361 (strcmp(name_hashtable[state_status], "config-files") == 0)) {
1362 error_msg_and_die("%s is already removed.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1363 }
1364 }
1365 else if (dpkg_opt & dpkg_opt_purge) {
1366 /* if package status is "conf-files" then its ok */
1367 if (strcmp(name_hashtable[state_status], "not-installed") == 0) {
1368 error_msg_and_die("%s is already purged.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1369 }
1370 }
1371 }
1372 deb_count++;
837 optind++; 1373 optind++;
838 } 1374 }
1375 deb_file[deb_count] = NULL;
839 1376
840 make_directory((char *)infodir, S_IRWXU, FILEUTILS_RECUR); 1377 /* Check that the deb file arguments are installable */
1378 /* TODO: check dependencies before removing */
1379 if ((dpkg_opt & dpkg_opt_force_ignore_depends) != dpkg_opt_force_ignore_depends) {
1380 if (!check_deps(deb_file, 0, deb_count)) {
1381 error_msg_and_die("Dependency check fialed");
1382 }
1383 }
841 1384
842 status = status_read(); 1385 for (i = 0; i < deb_count; i++) {
1386 /* Remove or purge packages */
1387 if (dpkg_opt & dpkg_opt_remove) {
1388 remove_package(deb_file[i]->package);
1389 }
1390 else if (dpkg_opt & dpkg_opt_purge) {
1391 purge_package(deb_file[i]->package);
1392 }
1393 else if (dpkg_opt & dpkg_opt_unpack) {
1394 unpack_package(deb_file[i]);
1395 }
1396 else if (dpkg_opt & dpkg_opt_install) {
1397 unpack_package(deb_file[i]);
1398 configure_package(deb_file[i]);
1399 }
1400 else if (dpkg_opt & dpkg_opt_configure) {
1401 configure_package(deb_file[i]);
1402 }
1403 }
843 1404
844 if (optflag & arg_install) { 1405 write_status_file(deb_file);
845 return dpkg_install(packages, status); 1406
1407 for (i = 0; i < NAME_HASH_PRIME; i++) {
1408 if (name_hashtable[i] != NULL) {
1409 free(name_hashtable[i]);
1410 }
846 } 1411 }
847 else if (optflag & arg_unpack) { 1412 for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
848 return dpkg_unpack(packages, status); 1413 free_package(package_hashtable[i]);
849 } 1414 }
850 else if (optflag & arg_configure) { 1415 for (i = 0; i < STATUS_HASH_PRIME; i++) {
851 return dpkg_configure(packages, status); 1416 if (status_hashtable[i] != NULL) {
1417 free(status_hashtable[i]);
1418 }
852 } 1419 }
1420
853 return(EXIT_FAILURE); 1421 return(EXIT_FAILURE);
854} 1422}
1423
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-01-31 17:31:28 +0000