1 /*
2 miniunz.c
3 Version 1.1, February 14h, 2010
4 sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
5
6 Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
7
8 Modifications of Unzip for Zip64
9 Copyright (C) 2007-2008 Even Rouault
10
11 Modifications for Zip64 support on both zip and unzip
12 Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
13 */
14
15 #if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__)) && (!defined(__ANDROID_API__))
16 #ifndef __USE_FILE_OFFSET64
17 #define __USE_FILE_OFFSET64
18 #endif
19 #ifndef __USE_LARGEFILE64
20 #define __USE_LARGEFILE64
21 #endif
22 #ifndef _LARGEFILE64_SOURCE
23 #define _LARGEFILE64_SOURCE
24 #endif
25 #ifndef _FILE_OFFSET_BIT
26 #define _FILE_OFFSET_BIT 64
27 #endif
28 #endif
29
30 #if defined(__APPLE__) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64) || defined(__Fuchsia__) || defined(__ANDROID_API__)
31 // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
32 #define FOPEN_FUNC(filename, mode) fopen(filename, mode)
33 #define FTELLO_FUNC(stream) ftello(stream)
34 #define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
35 #else
36 #define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
37 #define FTELLO_FUNC(stream) ftello64(stream)
38 #define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
39 #endif
40
41
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <time.h>
46 #include <errno.h>
47 #include <fcntl.h>
48 #include <sys/stat.h>
49
50 #ifdef _WIN32
51 # include <direct.h>
52 # include <io.h>
53 #else
54 # include <unistd.h>
55 # include <utime.h>
56 #endif
57
58
59 #include "unzip.h"
60
61 #define CASESENSITIVITY (0)
62 #define WRITEBUFFERSIZE (8192)
63 #define MAXFILENAME (256)
64
65 #ifdef _WIN32
66 #define USEWIN32IOAPI
67 #include "iowin32.h"
68 #endif
69 /*
70 mini unzip, demo of unzip package
71
72 usage :
73 Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir]
74
75 list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT
76 if it exists
77 */
78
79
80 /* change_file_date : change the date/time of a file
81 filename : the filename of the file where date/time must be modified
82 dosdate : the new date at the MSDos format (4 bytes)
83 tmu_date : the SAME new date at the tm_unz format */
change_file_date(const char * filename,uLong dosdate,tm_unz tmu_date)84 static void change_file_date(const char *filename, uLong dosdate, tm_unz tmu_date) {
85 #ifdef _WIN32
86 HANDLE hFile;
87 FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite;
88
89 hFile = CreateFileA(filename,GENERIC_READ | GENERIC_WRITE,
90 0,NULL,OPEN_EXISTING,0,NULL);
91 GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite);
92 DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal);
93 LocalFileTimeToFileTime(&ftLocal,&ftm);
94 SetFileTime(hFile,&ftm,&ftLastAcc,&ftm);
95 CloseHandle(hFile);
96 #else
97 #if defined(unix) || defined(__APPLE__) || defined(__Fuchsia__) || defined(__ANDROID_API__)
98 (void)dosdate;
99 struct utimbuf ut;
100 struct tm newdate;
101 newdate.tm_sec = tmu_date.tm_sec;
102 newdate.tm_min=tmu_date.tm_min;
103 newdate.tm_hour=tmu_date.tm_hour;
104 newdate.tm_mday=tmu_date.tm_mday;
105 newdate.tm_mon=tmu_date.tm_mon;
106 if (tmu_date.tm_year > 1900)
107 newdate.tm_year=tmu_date.tm_year - 1900;
108 else
109 newdate.tm_year=tmu_date.tm_year ;
110 newdate.tm_isdst=-1;
111
112 ut.actime=ut.modtime=mktime(&newdate);
113 utime(filename,&ut);
114 #else
115 (void)filename;
116 (void)dosdate;
117 (void)tmu_date;
118 #endif
119 #endif
120 }
121
122
123 /* mymkdir and change_file_date are not 100 % portable
124 As I don't know well Unix, I wait feedback for the unix portion */
125
mymkdir(const char * dirname)126 static int mymkdir(const char* dirname) {
127 int ret=0;
128 #if defined(_WIN32)
129 ret = _mkdir(dirname);
130 #elif defined(unix) || defined(__APPLE__) || defined(__Fuchsia__) || defined(__ANDROID_API__)
131 ret = mkdir (dirname,0775);
132 #else
133 (void)dirname;
134 #endif
135 return ret;
136 }
137
makedir(const char * newdir)138 static int makedir(const char *newdir) {
139 char *buffer ;
140 char *p;
141 size_t len = strlen(newdir);
142
143 if (len == 0)
144 return 0;
145
146 buffer = (char*)malloc(len+1);
147 if (buffer==NULL)
148 {
149 printf("Error allocating memory\n");
150 return UNZ_INTERNALERROR;
151 }
152 strcpy(buffer,newdir);
153
154 if (buffer[len-1] == '/') {
155 buffer[len-1] = '\0';
156 }
157 if (mymkdir(buffer) == 0)
158 {
159 free(buffer);
160 return 1;
161 }
162
163 p = buffer+1;
164 while (1)
165 {
166 char hold;
167
168 while(*p && *p != '\\' && *p != '/')
169 p++;
170 hold = *p;
171 *p = 0;
172 if ((mymkdir(buffer) == -1) && (errno == ENOENT))
173 {
174 printf("couldn't create directory %s\n",buffer);
175 free(buffer);
176 return 0;
177 }
178 if (hold == 0)
179 break;
180 *p++ = hold;
181 }
182 free(buffer);
183 return 1;
184 }
185
do_banner(void)186 static void do_banner(void) {
187 printf("MiniUnz 1.1, demo of zLib + Unz package written by Gilles Vollant\n");
188 printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
189 }
190
do_help(void)191 static void do_help(void) {
192 printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
193 " -e Extract without pathname (junk paths)\n" \
194 " -x Extract with pathname\n" \
195 " -v list files\n" \
196 " -l list files\n" \
197 " -d directory to extract into\n" \
198 " -o overwrite files without prompting\n" \
199 " -p extract encrypted file using password\n\n");
200 }
201
Display64BitsSize(ZPOS64_T n,int size_char)202 static void Display64BitsSize(ZPOS64_T n, int size_char) {
203 /* to avoid compatibility problem , we do here the conversion */
204 char number[21];
205 int offset=19;
206 int pos_string = 19;
207 number[20]=0;
208 for (;;) {
209 number[offset]=(char)((n%10)+'0');
210 if (number[offset] != '0')
211 pos_string=offset;
212 n/=10;
213 if (offset==0)
214 break;
215 offset--;
216 }
217 {
218 int size_display_string = 19-pos_string;
219 while (size_char > size_display_string)
220 {
221 size_char--;
222 printf(" ");
223 }
224 }
225
226 printf("%s",&number[pos_string]);
227 }
228
do_list(unzFile uf)229 static int do_list(unzFile uf) {
230 uLong i;
231 unz_global_info64 gi;
232 int err;
233
234 err = unzGetGlobalInfo64(uf,&gi);
235 if (err!=UNZ_OK)
236 printf("error %d with zipfile in unzGetGlobalInfo \n",err);
237 printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
238 printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
239 for (i=0;i<gi.number_entry;i++)
240 {
241 char filename_inzip[256];
242 unz_file_info64 file_info;
243 uLong ratio=0;
244 const char *string_method = "";
245 char charCrypt=' ';
246 err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
247 if (err!=UNZ_OK)
248 {
249 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
250 break;
251 }
252 if (file_info.uncompressed_size>0)
253 ratio = (uLong)((file_info.compressed_size*100)/file_info.uncompressed_size);
254
255 /* display a '*' if the file is encrypted */
256 if ((file_info.flag & 1) != 0)
257 charCrypt='*';
258
259 if (file_info.compression_method==0)
260 string_method="Stored";
261 else
262 if (file_info.compression_method==Z_DEFLATED)
263 {
264 uInt iLevel=(uInt)((file_info.flag & 0x6)/2);
265 if (iLevel==0)
266 string_method="Defl:N";
267 else if (iLevel==1)
268 string_method="Defl:X";
269 else if ((iLevel==2) || (iLevel==3))
270 string_method="Defl:F"; /* 2:fast , 3 : extra fast*/
271 }
272 else
273 if (file_info.compression_method==Z_BZIP2ED)
274 {
275 string_method="BZip2 ";
276 }
277 else
278 string_method="Unkn. ";
279
280 Display64BitsSize(file_info.uncompressed_size,7);
281 printf(" %6s%c",string_method,charCrypt);
282 Display64BitsSize(file_info.compressed_size,7);
283 printf(" %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n",
284 ratio,
285 (uLong)file_info.tmu_date.tm_mon + 1,
286 (uLong)file_info.tmu_date.tm_mday,
287 (uLong)file_info.tmu_date.tm_year % 100,
288 (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,
289 (uLong)file_info.crc,filename_inzip);
290 if ((i+1)<gi.number_entry)
291 {
292 err = unzGoToNextFile(uf);
293 if (err!=UNZ_OK)
294 {
295 printf("error %d with zipfile in unzGoToNextFile\n",err);
296 break;
297 }
298 }
299 }
300
301 return 0;
302 }
303
304
do_extract_currentfile(unzFile uf,const int * popt_extract_without_path,int * popt_overwrite,const char * password)305 static int do_extract_currentfile(unzFile uf, const int* popt_extract_without_path, int* popt_overwrite, const char* password) {
306 char filename_inzip[256];
307 char* filename_withoutpath;
308 char* p;
309 int err=UNZ_OK;
310 FILE *fout=NULL;
311 void* buf;
312 uInt size_buf;
313
314 unz_file_info64 file_info;
315 err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
316
317 if (err!=UNZ_OK)
318 {
319 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
320 return err;
321 }
322
323 size_buf = WRITEBUFFERSIZE;
324 buf = (void*)malloc(size_buf);
325 if (buf==NULL)
326 {
327 printf("Error allocating memory\n");
328 return UNZ_INTERNALERROR;
329 }
330
331 p = filename_withoutpath = filename_inzip;
332 while ((*p) != '\0')
333 {
334 if (((*p)=='/') || ((*p)=='\\'))
335 filename_withoutpath = p+1;
336 p++;
337 }
338
339 if ((*filename_withoutpath)=='\0')
340 {
341 if ((*popt_extract_without_path)==0)
342 {
343 printf("creating directory: %s\n",filename_inzip);
344 mymkdir(filename_inzip);
345 }
346 }
347 else
348 {
349 const char* write_filename;
350 int skip=0;
351
352 if ((*popt_extract_without_path)==0)
353 write_filename = filename_inzip;
354 else
355 write_filename = filename_withoutpath;
356
357 err = unzOpenCurrentFilePassword(uf,password);
358 if (err!=UNZ_OK)
359 {
360 printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
361 }
362
363 if (((*popt_overwrite)==0) && (err==UNZ_OK))
364 {
365 char rep=0;
366 FILE* ftestexist;
367 ftestexist = FOPEN_FUNC(write_filename,"rb");
368 if (ftestexist!=NULL)
369 {
370 fclose(ftestexist);
371 do
372 {
373 char answer[128];
374 int ret;
375
376 printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
377 ret = scanf("%1s",answer);
378 if (ret != 1)
379 {
380 exit(EXIT_FAILURE);
381 }
382 rep = answer[0] ;
383 if ((rep>='a') && (rep<='z'))
384 rep -= 0x20;
385 }
386 while ((rep!='Y') && (rep!='N') && (rep!='A'));
387 }
388
389 if (rep == 'N')
390 skip = 1;
391
392 if (rep == 'A')
393 *popt_overwrite=1;
394 }
395
396 if ((skip==0) && (err==UNZ_OK))
397 {
398 fout=FOPEN_FUNC(write_filename,"wb");
399 /* some zipfile don't contain directory alone before file */
400 if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
401 (filename_withoutpath!=(char*)filename_inzip))
402 {
403 char c=*(filename_withoutpath-1);
404 *(filename_withoutpath-1)='\0';
405 makedir(write_filename);
406 *(filename_withoutpath-1)=c;
407 fout=FOPEN_FUNC(write_filename,"wb");
408 }
409
410 if (fout==NULL)
411 {
412 printf("error opening %s\n",write_filename);
413 }
414 }
415
416 if (fout!=NULL)
417 {
418 printf(" extracting: %s\n",write_filename);
419
420 do
421 {
422 err = unzReadCurrentFile(uf,buf,size_buf);
423 if (err<0)
424 {
425 printf("error %d with zipfile in unzReadCurrentFile\n",err);
426 break;
427 }
428 if (err>0)
429 if (fwrite(buf,(unsigned)err,1,fout)!=1)
430 {
431 printf("error in writing extracted file\n");
432 err=UNZ_ERRNO;
433 break;
434 }
435 }
436 while (err>0);
437 if (fout)
438 fclose(fout);
439
440 if (err==0)
441 change_file_date(write_filename,file_info.dosDate,
442 file_info.tmu_date);
443 }
444
445 if (err==UNZ_OK)
446 {
447 err = unzCloseCurrentFile (uf);
448 if (err!=UNZ_OK)
449 {
450 printf("error %d with zipfile in unzCloseCurrentFile\n",err);
451 }
452 }
453 else
454 unzCloseCurrentFile(uf); /* don't lose the error */
455 }
456
457 free(buf);
458 return err;
459 }
460
461
do_extract(unzFile uf,int opt_extract_without_path,int opt_overwrite,const char * password)462 static int do_extract(unzFile uf, int opt_extract_without_path, int opt_overwrite, const char* password) {
463 uLong i;
464 unz_global_info64 gi;
465 int err;
466
467 err = unzGetGlobalInfo64(uf,&gi);
468 if (err!=UNZ_OK)
469 printf("error %d with zipfile in unzGetGlobalInfo \n",err);
470
471 for (i=0;i<gi.number_entry;i++)
472 {
473 if (do_extract_currentfile(uf,&opt_extract_without_path,
474 &opt_overwrite,
475 password) != UNZ_OK)
476 break;
477
478 if ((i+1)<gi.number_entry)
479 {
480 err = unzGoToNextFile(uf);
481 if (err!=UNZ_OK)
482 {
483 printf("error %d with zipfile in unzGoToNextFile\n",err);
484 break;
485 }
486 }
487 }
488
489 return 0;
490 }
491
do_extract_onefile(unzFile uf,const char * filename,int opt_extract_without_path,int opt_overwrite,const char * password)492 static int do_extract_onefile(unzFile uf, const char* filename, int opt_extract_without_path, int opt_overwrite, const char* password) {
493 if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK)
494 {
495 printf("file %s not found in the zipfile\n",filename);
496 return 2;
497 }
498
499 if (do_extract_currentfile(uf,&opt_extract_without_path,
500 &opt_overwrite,
501 password) == UNZ_OK)
502 return 0;
503 else
504 return 1;
505 }
506
507
main(int argc,char * argv[])508 int main(int argc, char *argv[]) {
509 const char *zipfilename=NULL;
510 const char *filename_to_extract=NULL;
511 const char *password=NULL;
512 char filename_try[MAXFILENAME+16] = "";
513 int i;
514 int ret_value=0;
515 int opt_do_list=0;
516 int opt_do_extract=1;
517 int opt_do_extract_withoutpath=0;
518 int opt_overwrite=0;
519 int opt_extractdir=0;
520 const char *dirname=NULL;
521 unzFile uf=NULL;
522
523 do_banner();
524 if (argc==1)
525 {
526 do_help();
527 return 0;
528 }
529 else
530 {
531 for (i=1;i<argc;i++)
532 {
533 if ((*argv[i])=='-')
534 {
535 const char *p=argv[i]+1;
536
537 while ((*p)!='\0')
538 {
539 char c=*(p++);
540 if ((c=='l') || (c=='L'))
541 opt_do_list = 1;
542 if ((c=='v') || (c=='V'))
543 opt_do_list = 1;
544 if ((c=='x') || (c=='X'))
545 opt_do_extract = 1;
546 if ((c=='e') || (c=='E'))
547 opt_do_extract = opt_do_extract_withoutpath = 1;
548 if ((c=='o') || (c=='O'))
549 opt_overwrite=1;
550 if ((c=='d') || (c=='D'))
551 {
552 opt_extractdir=1;
553 dirname=argv[i+1];
554 }
555
556 if (((c=='p') || (c=='P')) && (i+1<argc))
557 {
558 password=argv[i+1];
559 i++;
560 }
561 }
562 }
563 else
564 {
565 if (zipfilename == NULL)
566 zipfilename = argv[i];
567 else if ((filename_to_extract==NULL) && (!opt_extractdir))
568 filename_to_extract = argv[i] ;
569 }
570 }
571 }
572
573 if (zipfilename!=NULL)
574 {
575
576 # ifdef USEWIN32IOAPI
577 zlib_filefunc64_def ffunc;
578 # endif
579
580 strncpy(filename_try, zipfilename,MAXFILENAME-1);
581 /* strncpy doesn't append the trailing NULL, of the string is too long. */
582 filename_try[ MAXFILENAME ] = '\0';
583
584 # ifdef USEWIN32IOAPI
585 fill_win32_filefunc64A(&ffunc);
586 uf = unzOpen2_64(zipfilename,&ffunc);
587 # else
588 uf = unzOpen64(zipfilename);
589 # endif
590 if (uf==NULL)
591 {
592 strcat(filename_try,".zip");
593 # ifdef USEWIN32IOAPI
594 uf = unzOpen2_64(filename_try,&ffunc);
595 # else
596 uf = unzOpen64(filename_try);
597 # endif
598 }
599 }
600
601 if (uf==NULL)
602 {
603 printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
604 return 1;
605 }
606 printf("%s opened\n",filename_try);
607
608 if (opt_do_list==1)
609 ret_value = do_list(uf);
610 else if (opt_do_extract==1)
611 {
612 #ifdef _WIN32
613 if (opt_extractdir && _chdir(dirname))
614 #else
615 if (opt_extractdir && chdir(dirname))
616 #endif
617 {
618 printf("Error changing into %s, aborting\n", dirname);
619 exit(-1);
620 }
621
622 if (filename_to_extract == NULL)
623 ret_value = do_extract(uf, opt_do_extract_withoutpath, opt_overwrite, password);
624 else
625 ret_value = do_extract_onefile(uf, filename_to_extract, opt_do_extract_withoutpath, opt_overwrite, password);
626 }
627
628 unzClose(uf);
629
630 return ret_value;
631 }
632