summaryrefslogtreecommitdiff
path: root/contrib/minizip/mztools.c
diff options
context:
space:
mode:
authorMark Adler <madler@alumni.caltech.edu>2011-09-09 23:24:43 -0700
committerMark Adler <madler@alumni.caltech.edu>2011-09-09 23:24:43 -0700
commit6b8233bfe00e79134cb1b84fc49d4f750a797f79 (patch)
treeca2b03b0169568681dc3d9c823e9f0bc4417d6b5 /contrib/minizip/mztools.c
parent0484693e1723bbab791c56f95597bd7dbe867d03 (diff)
downloadzlib-1.2.2.3.tar.gz
zlib-1.2.2.3.tar.bz2
zlib-1.2.2.3.zip
zlib 1.2.2.3v1.2.2.3
Diffstat (limited to 'contrib/minizip/mztools.c')
-rw-r--r--contrib/minizip/mztools.c562
1 files changed, 281 insertions, 281 deletions
diff --git a/contrib/minizip/mztools.c b/contrib/minizip/mztools.c
index c1266bc..bc5c798 100644
--- a/contrib/minizip/mztools.c
+++ b/contrib/minizip/mztools.c
@@ -1,281 +1,281 @@
1/* 1/*
2 Additional tools for Minizip 2 Additional tools for Minizip
3 Code: Xavier Roche '2004 3 Code: Xavier Roche '2004
4 License: Same as ZLIB (www.gzip.org) 4 License: Same as ZLIB (www.gzip.org)
5*/ 5*/
6 6
7/* Code */ 7/* Code */
8#include <stdio.h> 8#include <stdio.h>
9#include <stdlib.h> 9#include <stdlib.h>
10#include <string.h> 10#include <string.h>
11#include "zlib.h" 11#include "zlib.h"
12#include "unzip.h" 12#include "unzip.h"
13 13
14#define READ_8(adr) ((unsigned char)*(adr)) 14#define READ_8(adr) ((unsigned char)*(adr))
15#define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) ) 15#define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) )
16#define READ_32(adr) ( READ_16(adr) | (READ_16((adr)+2) << 16) ) 16#define READ_32(adr) ( READ_16(adr) | (READ_16((adr)+2) << 16) )
17 17
18#define WRITE_8(buff, n) do { \ 18#define WRITE_8(buff, n) do { \
19 *((unsigned char*)(buff)) = (unsigned char) ((n) & 0xff); \ 19 *((unsigned char*)(buff)) = (unsigned char) ((n) & 0xff); \
20} while(0) 20} while(0)
21#define WRITE_16(buff, n) do { \ 21#define WRITE_16(buff, n) do { \
22 WRITE_8((unsigned char*)(buff), n); \ 22 WRITE_8((unsigned char*)(buff), n); \
23 WRITE_8(((unsigned char*)(buff)) + 1, (n) >> 8); \ 23 WRITE_8(((unsigned char*)(buff)) + 1, (n) >> 8); \
24} while(0) 24} while(0)
25#define WRITE_32(buff, n) do { \ 25#define WRITE_32(buff, n) do { \
26 WRITE_16((unsigned char*)(buff), (n) & 0xffff); \ 26 WRITE_16((unsigned char*)(buff), (n) & 0xffff); \
27 WRITE_16((unsigned char*)(buff) + 2, (n) >> 16); \ 27 WRITE_16((unsigned char*)(buff) + 2, (n) >> 16); \
28} while(0) 28} while(0)
29 29
30extern int ZEXPORT unzRepair(file, fileOut, fileOutTmp, nRecovered, bytesRecovered) 30extern int ZEXPORT unzRepair(file, fileOut, fileOutTmp, nRecovered, bytesRecovered)
31const char* file; 31const char* file;
32const char* fileOut; 32const char* fileOut;
33const char* fileOutTmp; 33const char* fileOutTmp;
34uLong* nRecovered; 34uLong* nRecovered;
35uLong* bytesRecovered; 35uLong* bytesRecovered;
36{ 36{
37 int err = Z_OK; 37 int err = Z_OK;
38 FILE* fpZip = fopen(file, "rb"); 38 FILE* fpZip = fopen(file, "rb");
39 FILE* fpOut = fopen(fileOut, "wb"); 39 FILE* fpOut = fopen(fileOut, "wb");
40 FILE* fpOutCD = fopen(fileOutTmp, "wb"); 40 FILE* fpOutCD = fopen(fileOutTmp, "wb");
41 if (fpZip != NULL && fpOut != NULL) { 41 if (fpZip != NULL && fpOut != NULL) {
42 int entries = 0; 42 int entries = 0;
43 uLong totalBytes = 0; 43 uLong totalBytes = 0;
44 char header[30]; 44 char header[30];
45 char filename[256]; 45 char filename[256];
46 char extra[1024]; 46 char extra[1024];
47 int offset = 0; 47 int offset = 0;
48 int offsetCD = 0; 48 int offsetCD = 0;
49 while ( fread(header, 1, 30, fpZip) == 30 ) { 49 while ( fread(header, 1, 30, fpZip) == 30 ) {
50 int currentOffset = offset; 50 int currentOffset = offset;
51 51
52 /* File entry */ 52 /* File entry */
53 if (READ_32(header) == 0x04034b50) { 53 if (READ_32(header) == 0x04034b50) {
54 unsigned int version = READ_16(header + 4); 54 unsigned int version = READ_16(header + 4);
55 unsigned int gpflag = READ_16(header + 6); 55 unsigned int gpflag = READ_16(header + 6);
56 unsigned int method = READ_16(header + 8); 56 unsigned int method = READ_16(header + 8);
57 unsigned int filetime = READ_16(header + 10); 57 unsigned int filetime = READ_16(header + 10);
58 unsigned int filedate = READ_16(header + 12); 58 unsigned int filedate = READ_16(header + 12);
59 unsigned int crc = READ_32(header + 14); /* crc */ 59 unsigned int crc = READ_32(header + 14); /* crc */
60 unsigned int cpsize = READ_32(header + 18); /* compressed size */ 60 unsigned int cpsize = READ_32(header + 18); /* compressed size */
61 unsigned int uncpsize = READ_32(header + 22); /* uncompressed sz */ 61 unsigned int uncpsize = READ_32(header + 22); /* uncompressed sz */
62 unsigned int fnsize = READ_16(header + 26); /* file name length */ 62 unsigned int fnsize = READ_16(header + 26); /* file name length */
63 unsigned int extsize = READ_16(header + 28); /* extra field length */ 63 unsigned int extsize = READ_16(header + 28); /* extra field length */
64 filename[0] = extra[0] = '\0'; 64 filename[0] = extra[0] = '\0';
65 65
66 /* Header */ 66 /* Header */
67 if (fwrite(header, 1, 30, fpOut) == 30) { 67 if (fwrite(header, 1, 30, fpOut) == 30) {
68 offset += 30; 68 offset += 30;
69 } else { 69 } else {
70 err = Z_ERRNO; 70 err = Z_ERRNO;
71 break; 71 break;
72 } 72 }
73 73
74 /* Filename */ 74 /* Filename */
75 if (fnsize > 0) { 75 if (fnsize > 0) {
76 if (fread(filename, 1, fnsize, fpZip) == fnsize) { 76 if (fread(filename, 1, fnsize, fpZip) == fnsize) {
77 if (fwrite(filename, 1, fnsize, fpOut) == fnsize) { 77 if (fwrite(filename, 1, fnsize, fpOut) == fnsize) {
78 offset += fnsize; 78 offset += fnsize;
79 } else { 79 } else {
80 err = Z_ERRNO; 80 err = Z_ERRNO;
81 break; 81 break;
82 } 82 }
83 } else { 83 } else {
84 err = Z_ERRNO; 84 err = Z_ERRNO;
85 break; 85 break;
86 } 86 }
87 } else { 87 } else {
88 err = Z_STREAM_ERROR; 88 err = Z_STREAM_ERROR;
89 break; 89 break;
90 } 90 }
91 91
92 /* Extra field */ 92 /* Extra field */
93 if (extsize > 0) { 93 if (extsize > 0) {
94 if (fread(extra, 1, extsize, fpZip) == extsize) { 94 if (fread(extra, 1, extsize, fpZip) == extsize) {
95 if (fwrite(extra, 1, extsize, fpOut) == extsize) { 95 if (fwrite(extra, 1, extsize, fpOut) == extsize) {
96 offset += extsize; 96 offset += extsize;
97 } else { 97 } else {
98 err = Z_ERRNO; 98 err = Z_ERRNO;
99 break; 99 break;
100 } 100 }
101 } else { 101 } else {
102 err = Z_ERRNO; 102 err = Z_ERRNO;
103 break; 103 break;
104 } 104 }
105 } 105 }
106 106
107 /* Data */ 107 /* Data */
108 { 108 {
109 int dataSize = cpsize; 109 int dataSize = cpsize;
110 if (dataSize == 0) { 110 if (dataSize == 0) {
111 dataSize = uncpsize; 111 dataSize = uncpsize;
112 } 112 }
113 if (dataSize > 0) { 113 if (dataSize > 0) {
114 char* data = malloc(dataSize); 114 char* data = malloc(dataSize);
115 if (data != NULL) { 115 if (data != NULL) {
116 if ((int)fread(data, 1, dataSize, fpZip) == dataSize) { 116 if ((int)fread(data, 1, dataSize, fpZip) == dataSize) {
117 if ((int)fwrite(data, 1, dataSize, fpOut) == dataSize) { 117 if ((int)fwrite(data, 1, dataSize, fpOut) == dataSize) {
118 offset += dataSize; 118 offset += dataSize;
119 totalBytes += dataSize; 119 totalBytes += dataSize;
120 } else { 120 } else {
121 err = Z_ERRNO; 121 err = Z_ERRNO;
122 } 122 }
123 } else { 123 } else {
124 err = Z_ERRNO; 124 err = Z_ERRNO;
125 } 125 }
126 free(data); 126 free(data);
127 if (err != Z_OK) { 127 if (err != Z_OK) {
128 break; 128 break;
129 } 129 }
130 } else { 130 } else {
131 err = Z_MEM_ERROR; 131 err = Z_MEM_ERROR;
132 break; 132 break;
133 } 133 }
134 } 134 }
135 } 135 }
136 136
137 /* Central directory entry */ 137 /* Central directory entry */
138 { 138 {
139 char header[46]; 139 char header[46];
140 char* comment = ""; 140 char* comment = "";
141 int comsize = (int) strlen(comment); 141 int comsize = (int) strlen(comment);
142 WRITE_32(header, 0x02014b50); 142 WRITE_32(header, 0x02014b50);
143 WRITE_16(header + 4, version); 143 WRITE_16(header + 4, version);
144 WRITE_16(header + 6, version); 144 WRITE_16(header + 6, version);
145 WRITE_16(header + 8, gpflag); 145 WRITE_16(header + 8, gpflag);
146 WRITE_16(header + 10, method); 146 WRITE_16(header + 10, method);
147 WRITE_16(header + 12, filetime); 147 WRITE_16(header + 12, filetime);
148 WRITE_16(header + 14, filedate); 148 WRITE_16(header + 14, filedate);
149 WRITE_32(header + 16, crc); 149 WRITE_32(header + 16, crc);
150 WRITE_32(header + 20, cpsize); 150 WRITE_32(header + 20, cpsize);
151 WRITE_32(header + 24, uncpsize); 151 WRITE_32(header + 24, uncpsize);
152 WRITE_16(header + 28, fnsize); 152 WRITE_16(header + 28, fnsize);
153 WRITE_16(header + 30, extsize); 153 WRITE_16(header + 30, extsize);
154 WRITE_16(header + 32, comsize); 154 WRITE_16(header + 32, comsize);
155 WRITE_16(header + 34, 0); /* disk # */ 155 WRITE_16(header + 34, 0); /* disk # */
156 WRITE_16(header + 36, 0); /* int attrb */ 156 WRITE_16(header + 36, 0); /* int attrb */
157 WRITE_32(header + 38, 0); /* ext attrb */ 157 WRITE_32(header + 38, 0); /* ext attrb */
158 WRITE_32(header + 42, currentOffset); 158 WRITE_32(header + 42, currentOffset);
159 /* Header */ 159 /* Header */
160 if (fwrite(header, 1, 46, fpOutCD) == 46) { 160 if (fwrite(header, 1, 46, fpOutCD) == 46) {
161 offsetCD += 46; 161 offsetCD += 46;
162 162
163 /* Filename */ 163 /* Filename */
164 if (fnsize > 0) { 164 if (fnsize > 0) {
165 if (fwrite(filename, 1, fnsize, fpOutCD) == fnsize) { 165 if (fwrite(filename, 1, fnsize, fpOutCD) == fnsize) {
166 offsetCD += fnsize; 166 offsetCD += fnsize;
167 } else { 167 } else {
168 err = Z_ERRNO; 168 err = Z_ERRNO;
169 break; 169 break;
170 } 170 }
171 } else { 171 } else {
172 err = Z_STREAM_ERROR; 172 err = Z_STREAM_ERROR;
173 break; 173 break;
174 } 174 }
175 175
176 /* Extra field */ 176 /* Extra field */
177 if (extsize > 0) { 177 if (extsize > 0) {
178 if (fwrite(extra, 1, extsize, fpOutCD) == extsize) { 178 if (fwrite(extra, 1, extsize, fpOutCD) == extsize) {
179 offsetCD += extsize; 179 offsetCD += extsize;
180 } else { 180 } else {
181 err = Z_ERRNO; 181 err = Z_ERRNO;
182 break; 182 break;
183 } 183 }
184 } 184 }
185 185
186 /* Comment field */ 186 /* Comment field */
187 if (comsize > 0) { 187 if (comsize > 0) {
188 if ((int)fwrite(comment, 1, comsize, fpOutCD) == comsize) { 188 if ((int)fwrite(comment, 1, comsize, fpOutCD) == comsize) {
189 offsetCD += comsize; 189 offsetCD += comsize;
190 } else { 190 } else {
191 err = Z_ERRNO; 191 err = Z_ERRNO;
192 break; 192 break;
193 } 193 }
194 } 194 }
195 195
196 196
197 } else { 197 } else {
198 err = Z_ERRNO; 198 err = Z_ERRNO;
199 break; 199 break;
200 } 200 }
201 } 201 }
202 202
203 /* Success */ 203 /* Success */
204 entries++; 204 entries++;
205 205
206 } else { 206 } else {
207 break; 207 break;
208 } 208 }
209 } 209 }
210 210
211 /* Final central directory */ 211 /* Final central directory */
212 { 212 {
213 int entriesZip = entries; 213 int entriesZip = entries;
214 char header[22]; 214 char header[22];
215 char* comment = ""; // "ZIP File recovered by zlib/minizip/mztools"; 215 char* comment = ""; // "ZIP File recovered by zlib/minizip/mztools";
216 int comsize = (int) strlen(comment); 216 int comsize = (int) strlen(comment);
217 if (entriesZip > 0xffff) { 217 if (entriesZip > 0xffff) {
218 entriesZip = 0xffff; 218 entriesZip = 0xffff;
219 } 219 }
220 WRITE_32(header, 0x06054b50); 220 WRITE_32(header, 0x06054b50);
221 WRITE_16(header + 4, 0); /* disk # */ 221 WRITE_16(header + 4, 0); /* disk # */
222 WRITE_16(header + 6, 0); /* disk # */ 222 WRITE_16(header + 6, 0); /* disk # */
223 WRITE_16(header + 8, entriesZip); /* hack */ 223 WRITE_16(header + 8, entriesZip); /* hack */
224 WRITE_16(header + 10, entriesZip); /* hack */ 224 WRITE_16(header + 10, entriesZip); /* hack */
225 WRITE_32(header + 12, offsetCD); /* size of CD */ 225 WRITE_32(header + 12, offsetCD); /* size of CD */
226 WRITE_32(header + 16, offset); /* offset to CD */ 226 WRITE_32(header + 16, offset); /* offset to CD */
227 WRITE_16(header + 20, comsize); /* comment */ 227 WRITE_16(header + 20, comsize); /* comment */
228 228
229 /* Header */ 229 /* Header */
230 if (fwrite(header, 1, 22, fpOutCD) == 22) { 230 if (fwrite(header, 1, 22, fpOutCD) == 22) {
231 231
232 /* Comment field */ 232 /* Comment field */
233 if (comsize > 0) { 233 if (comsize > 0) {
234 if ((int)fwrite(comment, 1, comsize, fpOutCD) != comsize) { 234 if ((int)fwrite(comment, 1, comsize, fpOutCD) != comsize) {
235 err = Z_ERRNO; 235 err = Z_ERRNO;
236 } 236 }
237 } 237 }
238 238
239 } else { 239 } else {
240 err = Z_ERRNO; 240 err = Z_ERRNO;
241 } 241 }
242 } 242 }
243 243
244 /* Final merge (file + central directory) */ 244 /* Final merge (file + central directory) */
245 fclose(fpOutCD); 245 fclose(fpOutCD);
246 if (err == Z_OK) { 246 if (err == Z_OK) {
247 fpOutCD = fopen(fileOutTmp, "rb"); 247 fpOutCD = fopen(fileOutTmp, "rb");
248 if (fpOutCD != NULL) { 248 if (fpOutCD != NULL) {
249 int nRead; 249 int nRead;
250 char buffer[8192]; 250 char buffer[8192];
251 while ( (nRead = fread(buffer, 1, sizeof(buffer), fpOutCD)) > 0) { 251 while ( (nRead = (int)fread(buffer, 1, sizeof(buffer), fpOutCD)) > 0) {
252 if ((int)fwrite(buffer, 1, nRead, fpOut) != nRead) { 252 if ((int)fwrite(buffer, 1, nRead, fpOut) != nRead) {
253 err = Z_ERRNO; 253 err = Z_ERRNO;
254 break; 254 break;
255 } 255 }
256 } 256 }
257 fclose(fpOutCD); 257 fclose(fpOutCD);
258 } 258 }
259 } 259 }
260 260
261 /* Close */ 261 /* Close */
262 fclose(fpZip); 262 fclose(fpZip);
263 fclose(fpOut); 263 fclose(fpOut);
264 264
265 /* Wipe temporary file */ 265 /* Wipe temporary file */
266 (void)remove(fileOutTmp); 266 (void)remove(fileOutTmp);
267 267
268 /* Number of recovered entries */ 268 /* Number of recovered entries */
269 if (err == Z_OK) { 269 if (err == Z_OK) {
270 if (nRecovered != NULL) { 270 if (nRecovered != NULL) {
271 *nRecovered = entries; 271 *nRecovered = entries;
272 } 272 }
273 if (bytesRecovered != NULL) { 273 if (bytesRecovered != NULL) {
274 *bytesRecovered = totalBytes; 274 *bytesRecovered = totalBytes;
275 } 275 }
276 } 276 }
277 } else { 277 } else {
278 err = Z_STREAM_ERROR; 278 err = Z_STREAM_ERROR;
279 } 279 }
280 return err; 280 return err;
281} 281}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-17 15:16:36 +0000