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-rw-r--r--archival/rpm.c351
1 files changed, 351 insertions, 0 deletions
diff --git a/archival/rpm.c b/archival/rpm.c
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1/* vi: set sw=4 ts=4: */
2/*
3 * Mini rpm applet for busybox
4 *
5 * Copyright (C) 2001,2002 by Laurence Anderson
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include "busybox.h"
23#include "unarchive.h"
24#include <stdio.h>
25#include <unistd.h>
26#include <signal.h>
27#include <stdlib.h>
28#include <fcntl.h>
29#include <netinet/in.h> /* For ntohl & htonl function */
30#include <string.h> /* For strncmp */
31#include <sys/mman.h> /* For mmap */
32#include <time.h> /* For ctime */
33
34#define RPM_HEADER_MAGIC "\216\255\350"
35#define RPM_CHAR_TYPE 1
36#define RPM_INT8_TYPE 2
37#define RPM_INT16_TYPE 3
38#define RPM_INT32_TYPE 4
39/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
40#define RPM_STRING_TYPE 6
41#define RPM_BIN_TYPE 7
42#define RPM_STRING_ARRAY_TYPE 8
43#define RPM_I18NSTRING_TYPE 9
44
45#define RPMTAG_NAME 1000
46#define RPMTAG_VERSION 1001
47#define RPMTAG_RELEASE 1002
48#define RPMTAG_SUMMARY 1004
49#define RPMTAG_DESCRIPTION 1005
50#define RPMTAG_BUILDTIME 1006
51#define RPMTAG_BUILDHOST 1007
52#define RPMTAG_SIZE 1009
53#define RPMTAG_VENDOR 1011
54#define RPMTAG_LICENSE 1014
55#define RPMTAG_PACKAGER 1015
56#define RPMTAG_GROUP 1016
57#define RPMTAG_URL 1020
58#define RPMTAG_PREIN 1023
59#define RPMTAG_POSTIN 1024
60#define RPMTAG_FILEFLAGS 1037
61#define RPMTAG_FILEUSERNAME 1039
62#define RPMTAG_FILEGROUPNAME 1040
63#define RPMTAG_SOURCERPM 1044
64#define RPMTAG_PREINPROG 1085
65#define RPMTAG_POSTINPROG 1086
66#define RPMTAG_PREFIXS 1098
67#define RPMTAG_DIRINDEXES 1116
68#define RPMTAG_BASENAMES 1117
69#define RPMTAG_DIRNAMES 1118
70#define RPMFILE_CONFIG (1 << 0)
71#define RPMFILE_DOC (1 << 1)
72
73enum rpm_functions_e {
74 rpm_query = 1,
75 rpm_install = 2,
76 rpm_query_info = 4,
77 rpm_query_package = 8,
78 rpm_query_list = 16,
79 rpm_query_list_doc = 32,
80 rpm_query_list_config = 64
81};
82
83typedef struct {
84 u_int32_t tag; /* 4 byte tag */
85 u_int32_t type; /* 4 byte type */
86 u_int32_t offset; /* 4 byte offset */
87 u_int32_t count; /* 4 byte count */
88} rpm_index;
89
90static void *map;
91static rpm_index **mytags;
92static int tagcount;
93
94void extract_cpio_gz(int fd);
95rpm_index **rpm_gettags(int fd, int *num_tags);
96int bsearch_rpmtag(const void *key, const void *item);
97char *rpm_getstring(int tag, int itemindex);
98int rpm_getint(int tag, int itemindex);
99int rpm_getcount(int tag);
100void exec_script(int progtag, int datatag, char *prefix);
101void fileaction_dobackup(char *filename, int fileref);
102void fileaction_setowngrp(char *filename, int fileref);
103void fileaction_list(char *filename, int itemno);
104void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));
105
106int rpm_main(int argc, char **argv)
107{
108 int opt = 0, func = 0, rpm_fd, offset;
109
110 while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
111 switch (opt) {
112 case 'i': // First arg: Install mode, with q: Information
113 if (!func) func |= rpm_install;
114 else func |= rpm_query_info;
115 break;
116 case 'q': // First arg: Query mode
117 if (!func) func |= rpm_query;
118 else show_usage();
119 break;
120 case 'p': // Query a package
121 func |= rpm_query_package;
122 break;
123 case 'l': // List files in a package
124 func |= rpm_query_list;
125 break;
126 case 'd': // List doc files in a package (implies list)
127 func |= rpm_query_list;
128 func |= rpm_query_list_doc;
129 break;
130 case 'c': // List config files in a package (implies list)
131 func |= rpm_query_list;
132 func |= rpm_query_list_config;
133 break;
134 default:
135 show_usage();
136 }
137 }
138
139 if (optind == argc) show_usage();
140 while (optind < argc) {
141 rpm_fd = xopen(argv[optind], O_RDONLY);
142 mytags = rpm_gettags(rpm_fd, (int *) &tagcount);
143 offset = lseek(rpm_fd, 0, SEEK_CUR);
144 if (!mytags) { printf("Error reading rpm header\n"); exit(-1); }
145 map = mmap(0, offset > getpagesize() ? (offset + offset % getpagesize()) : getpagesize(), PROT_READ, MAP_SHARED, rpm_fd, 0); // Mimimum is one page
146 if (func & rpm_install) {
147 loop_through_files(RPMTAG_BASENAMES, fileaction_dobackup); /* Backup any config files */
148 extract_cpio_gz(rpm_fd); // Extact the archive
149 loop_through_files(RPMTAG_BASENAMES, fileaction_setowngrp); /* Set the correct file uid/gid's */
150 } else if (func & rpm_query && func & rpm_query_package) {
151 if (!((func & rpm_query_info) || (func & rpm_query_list))) { // If just a straight query, just give package name
152 printf("%s-%s-%s\n", rpm_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_RELEASE, 0));
153 }
154 if (func & rpm_query_info) {
155 /* Do the nice printout */
156 time_t bdate_time;
157 struct tm *bdate;
158 char bdatestring[50];
159 printf("Name : %-29sRelocations: %s\n", rpm_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_PREFIXS, 0) ? rpm_getstring(RPMTAG_PREFIXS, 0) : "(not relocateable)");
160 printf("Version : %-34sVendor: %s\n", rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_VENDOR, 0) ? rpm_getstring(RPMTAG_VENDOR, 0) : "(none)");
161 bdate_time = rpm_getint(RPMTAG_BUILDTIME, 0);
162 bdate = localtime((time_t *) &bdate_time);
163 strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate);
164 printf("Release : %-30sBuild Date: %s\n", rpm_getstring(RPMTAG_RELEASE, 0), bdatestring);
165 printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstring(RPMTAG_BUILDHOST, 0));
166 printf("Group : %-30sSource RPM: %s\n", rpm_getstring(RPMTAG_GROUP, 0), rpm_getstring(RPMTAG_SOURCERPM, 0));
167 printf("Size : %-33dLicense: %s\n", rpm_getint(RPMTAG_SIZE, 0), rpm_getstring(RPMTAG_LICENSE, 0));
168 printf("URL : %s\n", rpm_getstring(RPMTAG_URL, 0));
169 printf("Summary : %s\n", rpm_getstring(RPMTAG_SUMMARY, 0));
170 printf("Description :\n%s\n", rpm_getstring(RPMTAG_DESCRIPTION, 0));
171 }
172 if (func & rpm_query_list) {
173 int count, it, flags;
174 count = rpm_getcount(RPMTAG_BASENAMES);
175 for (it = 0; it < count; it++) {
176 flags = rpm_getint(RPMTAG_FILEFLAGS, it);
177 switch ((func & rpm_query_list_doc) + (func & rpm_query_list_config))
178 {
179 case rpm_query_list_doc: if (!(flags & RPMFILE_DOC)) continue; break;
180 case rpm_query_list_config: if (!(flags & RPMFILE_CONFIG)) continue; break;
181 case rpm_query_list_doc + rpm_query_list_config: if (!((flags & RPMFILE_CONFIG) || (flags & RPMFILE_DOC))) continue; break;
182 }
183 printf("%s%s\n", rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES, it)), rpm_getstring(RPMTAG_BASENAMES, it));
184 }
185 }
186 }
187 optind++;
188 free (mytags);
189 }
190 return 0;
191}
192
193void extract_cpio_gz(int fd) {
194 archive_handle_t *archive_handle;
195 unsigned char magic[2];
196
197 /* Initialise */
198 archive_handle = init_handle();
199 archive_handle->read = read_gz;
200 archive_handle->seek = seek_by_char;
201 //archive_handle->action_header = header_list;
202 archive_handle->action_data = data_extract_all;
203 archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
204 archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
205 archive_handle->src_fd = fd;
206 archive_handle->offset = 0;
207
208 xread_all(archive_handle->src_fd, &magic, 2);
209 if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
210 error_msg_and_die("Invalid gzip magic");
211 }
212 check_header_gzip(archive_handle->src_fd);
213 chdir("/"); // Install RPM's to root
214
215 GZ_gzReadOpen(archive_handle->src_fd, 0, 0);
216 while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
217 GZ_gzReadClose();
218
219 check_trailer_gzip(archive_handle->src_fd);
220}
221
222
223rpm_index **rpm_gettags(int fd, int *num_tags)
224{
225 rpm_index **tags = calloc(200, sizeof(struct rpmtag *)); /* We should never need mode than 200, and realloc later */
226 int pass, tagindex = 0;
227 lseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
228
229 for (pass = 0; pass < 2; pass++) { /* 1st pass is the signature headers, 2nd is the main stuff */
230 struct {
231 char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
232 u_int8_t version; /* 1 byte version number */
233 u_int32_t reserved; /* 4 bytes reserved */
234 u_int32_t entries; /* Number of entries in header (4 bytes) */
235 u_int32_t size; /* Size of store (4 bytes) */
236 } header;
237 rpm_index *tmpindex;
238 int storepos;
239
240 read(fd, &header, sizeof(header));
241 if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0) return NULL; /* Invalid magic */
242 if (header.version != 1) return NULL; /* This program only supports v1 headers */
243 header.size = ntohl(header.size);
244 header.entries = ntohl(header.entries);
245 storepos = lseek(fd,0,SEEK_CUR) + header.entries * 16;
246
247 while (header.entries--) {
248 tmpindex = tags[tagindex++] = malloc(sizeof(rpm_index));
249 read(fd, tmpindex, sizeof(rpm_index));
250 tmpindex->tag = ntohl(tmpindex->tag); tmpindex->type = ntohl(tmpindex->type); tmpindex->count = ntohl(tmpindex->count);
251 tmpindex->offset = storepos + ntohl(tmpindex->offset);
252 if (pass==0) tmpindex->tag -= 743;
253 }
254 lseek(fd, header.size, SEEK_CUR); /* Seek past store */
255 if (pass==0) lseek(fd, (8 - (lseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR); /* Skip padding to 8 byte boundary after reading signature headers */
256 }
257 tags = realloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */
258 *num_tags = tagindex;
259 return tags; /* All done, leave the file at the start of the gzipped cpio archive */
260}
261
262int bsearch_rpmtag(const void *key, const void *item)
263{
264 rpm_index **tmp = (rpm_index **) item;
265 return ((int) key - tmp[0]->tag);
266}
267
268int rpm_getcount(int tag)
269{
270 rpm_index **found;
271 found = bsearch((void *) tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
272 if (!found) return 0;
273 else return found[0]->count;
274}
275
276char *rpm_getstring(int tag, int itemindex)
277{
278 rpm_index **found;
279 found = bsearch((void *) tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
280 if (!found || itemindex >= found[0]->count) return NULL;
281 if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) {
282 int n;
283 char *tmpstr = (char *) (map + found[0]->offset);
284 for (n=0; n < itemindex; n++) tmpstr = tmpstr + strlen(tmpstr) + 1;
285 return tmpstr;
286 } else return NULL;
287}
288
289int rpm_getint(int tag, int itemindex)
290{
291 rpm_index **found;
292 int n, *tmpint;
293 found = bsearch((void *) tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
294 if (!found || itemindex >= found[0]->count) return -1;
295 tmpint = (int *) (map + found[0]->offset);
296 if (found[0]->type == RPM_INT32_TYPE) {
297 for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 4);
298 return ntohl(*tmpint);
299 } else if (found[0]->type == RPM_INT16_TYPE) {
300 for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 2);
301 return ntohs(*tmpint);
302 } else if (found[0]->type == RPM_INT8_TYPE) {
303 for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 1);
304 return ntohs(*tmpint);
305 } else return -1;
306}
307
308void fileaction_dobackup(char *filename, int fileref)
309{
310 struct stat oldfile;
311 int stat_res;
312 char *newname;
313 if (rpm_getint(RPMTAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) { /* Only need to backup config files */
314 stat_res = lstat (filename, &oldfile);
315 if (stat_res == 0 && S_ISREG(oldfile.st_mode)) { /* File already exists - really should check MD5's etc to see if different */
316 newname = xstrdup(filename);
317 newname = strcat(newname, ".rpmorig");
318 copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
319 remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
320 free(newname);
321 }
322 }
323}
324
325void fileaction_setowngrp(char *filename, int fileref)
326{
327 int uid, gid;
328 uid = my_getpwnam(rpm_getstring(RPMTAG_FILEUSERNAME, fileref));
329 gid = my_getgrnam(rpm_getstring(RPMTAG_FILEGROUPNAME, fileref));
330 chown (filename, uid, gid);
331}
332
333void fileaction_list(char *filename, int fileref)
334{
335 printf("%s\n", filename);
336}
337
338void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
339{
340 int count = 0;
341 char *filename, *tmp_dirname, *tmp_basename;
342 while (rpm_getstring(filetag, count)) {
343 tmp_dirname = rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES, count)); /* 1st put on the directory */
344 tmp_basename = rpm_getstring(RPMTAG_BASENAMES, count);
345 filename = xmalloc(strlen(tmp_basename) + strlen(tmp_dirname) + 1);
346 strcpy(filename, tmp_dirname); /* First the directory name */
347 strcat(filename, tmp_basename); /* then the filename */
348 fileaction(filename, count++);
349 free(filename);
350 }
351}
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