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__))
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 #ifdef __APPLE__
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 */
84 static void change_file_date(filename,dosdate,tmu_date)
85 const char *filename;
86 uLong dosdate;
87 tm_unz tmu_date;
88 {
89 #ifdef _WIN32
90 HANDLE hFile;
91 FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite;
92
93 hFile = CreateFileA(filename,GENERIC_READ | GENERIC_WRITE,
94 0,NULL,OPEN_EXISTING,0,NULL);
95 GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite);
96 DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal);
97 LocalFileTimeToFileTime(&ftLocal,&ftm);
98 SetFileTime(hFile,&ftm,&ftLastAcc,&ftm);
99 CloseHandle(hFile);
100 #else
101 #if defined(unix) || defined(__APPLE__)
102 (void)dosdate;
103 struct utimbuf ut;
104 struct tm newdate;
105 newdate.tm_sec = tmu_date.tm_sec;
106 newdate.tm_min=tmu_date.tm_min;
107 newdate.tm_hour=tmu_date.tm_hour;
108 newdate.tm_mday=tmu_date.tm_mday;
109 newdate.tm_mon=tmu_date.tm_mon;
110 if (tmu_date.tm_year > 1900)
111 newdate.tm_year=tmu_date.tm_year - 1900;
112 else
113 newdate.tm_year=tmu_date.tm_year ;
114 newdate.tm_isdst=-1;
115
116 ut.actime=ut.modtime=mktime(&newdate);
117 utime(filename,&ut);
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
126 static int mymkdir(dirname)
127 const char* dirname;
128 {
129 int ret=0;
130 #ifdef _WIN32
131 ret = _mkdir(dirname);
132 #elif unix
133 ret = mkdir (dirname,0775);
134 #elif __APPLE__
135 ret = mkdir (dirname,0775);
136 #endif
137 return ret;
138 }
139
140 static int makedir (newdir)
141 const char *newdir;
142 {
143 char *buffer ;
144 char *p;
145 size_t len = strlen(newdir);
146
147 if (len == 0)
148 return 0;
149
150 buffer = (char*)malloc(len+1);
151 if (buffer==NULL)
152 {
153 printf("Error allocating memory\n");
154 return UNZ_INTERNALERROR;
155 }
156 strcpy(buffer,newdir);
157
158 if (buffer[len-1] == '/') {
159 buffer[len-1] = '\0';
160 }
161 if (mymkdir(buffer) == 0)
162 {
163 free(buffer);
164 return 1;
165 }
166
167 p = buffer+1;
168 while (1)
169 {
170 char hold;
171
172 while(*p && *p != '\\' && *p != '/')
173 p++;
174 hold = *p;
175 *p = 0;
176 if ((mymkdir(buffer) == -1) && (errno == ENOENT))
177 {
178 printf("couldn't create directory %s\n",buffer);
179 free(buffer);
180 return 0;
181 }
182 if (hold == 0)
183 break;
184 *p++ = hold;
185 }
186 free(buffer);
187 return 1;
188 }
189
190 static void do_banner()
191 {
192 printf("MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant\n");
193 printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
194 }
195
196 static void do_help()
197 {
198 printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
199 " -e Extract without pathname (junk paths)\n" \
200 " -x Extract with pathname\n" \
201 " -v list files\n" \
202 " -l list files\n" \
203 " -d directory to extract into\n" \
204 " -o overwrite files without prompting\n" \
205 " -p extract crypted file using password\n\n");
206 }
207
208 static void Display64BitsSize(ZPOS64_T n, int size_char)
209 {
210 /* to avoid compatibility problem , we do here the conversion */
211 char number[21];
212 int offset=19;
213 int pos_string = 19;
214 number[20]=0;
215 for (;;) {
216 number[offset]=(char)((n%10)+'0');
217 if (number[offset] != '0')
218 pos_string=offset;
219 n/=10;
220 if (offset==0)
221 break;
222 offset--;
223 }
224 {
225 int size_display_string = 19-pos_string;
226 while (size_char > size_display_string)
227 {
228 size_char--;
229 printf(" ");
230 }
231 }
232
233 printf("%s",&number[pos_string]);
234 }
235
236 static int do_list(uf)
237 unzFile uf;
238 {
239 uLong i;
240 unz_global_info64 gi;
241 int err;
242
243 err = unzGetGlobalInfo64(uf,&gi);
244 if (err!=UNZ_OK)
245 printf("error %d with zipfile in unzGetGlobalInfo \n",err);
246 printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
247 printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
248 for (i=0;i<gi.number_entry;i++)
249 {
250 char filename_inzip[256];
251 unz_file_info64 file_info;
252 uLong ratio=0;
253 const char *string_method;
254 char charCrypt=' ';
255 err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
256 if (err!=UNZ_OK)
257 {
258 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
259 break;
260 }
261 if (file_info.uncompressed_size>0)
262 ratio = (uLong)((file_info.compressed_size*100)/file_info.uncompressed_size);
263
264 /* display a '*' if the file is crypted */
265 if ((file_info.flag & 1) != 0)
266 charCrypt='*';
267
268 if (file_info.compression_method==0)
269 string_method="Stored";
270 else
271 if (file_info.compression_method==Z_DEFLATED)
272 {
273 uInt iLevel=(uInt)((file_info.flag & 0x6)/2);
274 if (iLevel==0)
275 string_method="Defl:N";
276 else if (iLevel==1)
277 string_method="Defl:X";
278 else if ((iLevel==2) || (iLevel==3))
279 string_method="Defl:F"; /* 2:fast , 3 : extra fast*/
280 }
281 else
282 if (file_info.compression_method==Z_BZIP2ED)
283 {
284 string_method="BZip2 ";
285 }
286 else
287 string_method="Unkn. ";
288
289 Display64BitsSize(file_info.uncompressed_size,7);
290 printf(" %6s%c",string_method,charCrypt);
291 Display64BitsSize(file_info.compressed_size,7);
292 printf(" %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n",
293 ratio,
294 (uLong)file_info.tmu_date.tm_mon + 1,
295 (uLong)file_info.tmu_date.tm_mday,
296 (uLong)file_info.tmu_date.tm_year % 100,
297 (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,
298 (uLong)file_info.crc,filename_inzip);
299 if ((i+1)<gi.number_entry)
300 {
301 err = unzGoToNextFile(uf);
302 if (err!=UNZ_OK)
303 {
304 printf("error %d with zipfile in unzGoToNextFile\n",err);
305 break;
306 }
307 }
308 }
309
310 return 0;
311 }
312
313
314 static int do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)
315 unzFile uf;
316 const int* popt_extract_without_path;
317 int* popt_overwrite;
318 const char* password;
319 {
320 char filename_inzip[256];
321 char* filename_withoutpath;
322 char* p;
323 int err=UNZ_OK;
324 FILE *fout=NULL;
325 void* buf;
326 uInt size_buf;
327
328 unz_file_info64 file_info;
329 err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
330
331 if (err!=UNZ_OK)
332 {
333 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
334 return err;
335 }
336
337 size_buf = WRITEBUFFERSIZE;
338 buf = (void*)malloc(size_buf);
339 if (buf==NULL)
340 {
341 printf("Error allocating memory\n");
342 return UNZ_INTERNALERROR;
343 }
344
345 p = filename_withoutpath = filename_inzip;
346 while ((*p) != '\0')
347 {
348 if (((*p)=='/') || ((*p)=='\\'))
349 filename_withoutpath = p+1;
350 p++;
351 }
352
353 if ((*filename_withoutpath)=='\0')
354 {
355 if ((*popt_extract_without_path)==0)
356 {
357 printf("creating directory: %s\n",filename_inzip);
358 mymkdir(filename_inzip);
359 }
360 }
361 else
362 {
363 const char* write_filename;
364 int skip=0;
365
366 if ((*popt_extract_without_path)==0)
367 write_filename = filename_inzip;
368 else
369 write_filename = filename_withoutpath;
370
371 err = unzOpenCurrentFilePassword(uf,password);
372 if (err!=UNZ_OK)
373 {
374 printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
375 }
376
377 if (((*popt_overwrite)==0) && (err==UNZ_OK))
378 {
379 char rep=0;
380 FILE* ftestexist;
381 ftestexist = FOPEN_FUNC(write_filename,"rb");
382 if (ftestexist!=NULL)
383 {
384 fclose(ftestexist);
385 do
386 {
387 char answer[128];
388 int ret;
389
390 printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
391 ret = scanf("%1s",answer);
392 if (ret != 1)
393 {
394 exit(EXIT_FAILURE);
395 }
396 rep = answer[0] ;
397 if ((rep>='a') && (rep<='z'))
398 rep -= 0x20;
399 }
400 while ((rep!='Y') && (rep!='N') && (rep!='A'));
401 }
402
403 if (rep == 'N')
404 skip = 1;
405
406 if (rep == 'A')
407 *popt_overwrite=1;
408 }
409
410 if ((skip==0) && (err==UNZ_OK))
411 {
412 fout=FOPEN_FUNC(write_filename,"wb");
413 /* some zipfile don't contain directory alone before file */
414 if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
415 (filename_withoutpath!=(char*)filename_inzip))
416 {
417 char c=*(filename_withoutpath-1);
418 *(filename_withoutpath-1)='\0';
419 makedir(write_filename);
420 *(filename_withoutpath-1)=c;
421 fout=FOPEN_FUNC(write_filename,"wb");
422 }
423
424 if (fout==NULL)
425 {
426 printf("error opening %s\n",write_filename);
427 }
428 }
429
430 if (fout!=NULL)
431 {
432 printf(" extracting: %s\n",write_filename);
433
434 do
435 {
436 err = unzReadCurrentFile(uf,buf,size_buf);
437 if (err<0)
438 {
439 printf("error %d with zipfile in unzReadCurrentFile\n",err);
440 break;
441 }
442 if (err>0)
443 if (fwrite(buf,(unsigned)err,1,fout)!=1)
444 {
445 printf("error in writing extracted file\n");
446 err=UNZ_ERRNO;
447 break;
448 }
449 }
450 while (err>0);
451 if (fout)
452 fclose(fout);
453
454 if (err==0)
455 change_file_date(write_filename,file_info.dosDate,
456 file_info.tmu_date);
457 }
458
459 if (err==UNZ_OK)
460 {
461 err = unzCloseCurrentFile (uf);
462 if (err!=UNZ_OK)
463 {
464 printf("error %d with zipfile in unzCloseCurrentFile\n",err);
465 }
466 }
467 else
468 unzCloseCurrentFile(uf); /* don't lose the error */
469 }
470
471 free(buf);
472 return err;
473 }
474
475
476 static int do_extract(uf,opt_extract_without_path,opt_overwrite,password)
477 unzFile uf;
478 int opt_extract_without_path;
479 int opt_overwrite;
480 const char* password;
481 {
482 uLong i;
483 unz_global_info64 gi;
484 int err;
485
486 err = unzGetGlobalInfo64(uf,&gi);
487 if (err!=UNZ_OK)
488 printf("error %d with zipfile in unzGetGlobalInfo \n",err);
489
490 for (i=0;i<gi.number_entry;i++)
491 {
492 if (do_extract_currentfile(uf,&opt_extract_without_path,
493 &opt_overwrite,
494 password) != UNZ_OK)
495 break;
496
497 if ((i+1)<gi.number_entry)
498 {
499 err = unzGoToNextFile(uf);
500 if (err!=UNZ_OK)
501 {
502 printf("error %d with zipfile in unzGoToNextFile\n",err);
503 break;
504 }
505 }
506 }
507
508 return 0;
509 }
510
511 static int do_extract_onefile(uf,filename,opt_extract_without_path,opt_overwrite,password)
512 unzFile uf;
513 const char* filename;
514 int opt_extract_without_path;
515 int opt_overwrite;
516 const char* password;
517 {
518 if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK)
519 {
520 printf("file %s not found in the zipfile\n",filename);
521 return 2;
522 }
523
524 if (do_extract_currentfile(uf,&opt_extract_without_path,
525 &opt_overwrite,
526 password) == UNZ_OK)
527 return 0;
528 else
529 return 1;
530 }
531
532
533 int main(argc,argv)
534 int argc;
535 char *argv[];
536 {
537 const char *zipfilename=NULL;
538 const char *filename_to_extract=NULL;
539 const char *password=NULL;
540 char filename_try[MAXFILENAME+16] = "";
541 int i;
542 int ret_value=0;
543 int opt_do_list=0;
544 int opt_do_extract=1;
545 int opt_do_extract_withoutpath=0;
546 int opt_overwrite=0;
547 int opt_extractdir=0;
548 const char *dirname=NULL;
549 unzFile uf=NULL;
550
551 do_banner();
552 if (argc==1)
553 {
554 do_help();
555 return 0;
556 }
557 else
558 {
559 for (i=1;i<argc;i++)
560 {
561 if ((*argv[i])=='-')
562 {
563 const char *p=argv[i]+1;
564
565 while ((*p)!='\0')
566 {
567 char c=*(p++);;
568 if ((c=='l') || (c=='L'))
569 opt_do_list = 1;
570 if ((c=='v') || (c=='V'))
571 opt_do_list = 1;
572 if ((c=='x') || (c=='X'))
573 opt_do_extract = 1;
574 if ((c=='e') || (c=='E'))
575 opt_do_extract = opt_do_extract_withoutpath = 1;
576 if ((c=='o') || (c=='O'))
577 opt_overwrite=1;
578 if ((c=='d') || (c=='D'))
579 {
580 opt_extractdir=1;
581 dirname=argv[i+1];
582 }
583
584 if (((c=='p') || (c=='P')) && (i+1<argc))
585 {
586 password=argv[i+1];
587 i++;
588 }
589 }
590 }
591 else
592 {
593 if (zipfilename == NULL)
594 zipfilename = argv[i];
595 else if ((filename_to_extract==NULL) && (!opt_extractdir))
596 filename_to_extract = argv[i] ;
597 }
598 }
599 }
600
601 if (zipfilename!=NULL)
602 {
603
604 # ifdef USEWIN32IOAPI
605 zlib_filefunc64_def ffunc;
606 # endif
607
608 strncpy(filename_try, zipfilename,MAXFILENAME-1);
609 /* strncpy doesnt append the trailing NULL, of the string is too long. */
610 filename_try[ MAXFILENAME ] = '\0';
611
612 # ifdef USEWIN32IOAPI
613 fill_win32_filefunc64A(&ffunc);
614 uf = unzOpen2_64(zipfilename,&ffunc);
615 # else
616 uf = unzOpen64(zipfilename);
617 # endif
618 if (uf==NULL)
619 {
620 strcat(filename_try,".zip");
621 # ifdef USEWIN32IOAPI
622 uf = unzOpen2_64(filename_try,&ffunc);
623 # else
624 uf = unzOpen64(filename_try);
625 # endif
626 }
627 }
628
629 if (uf==NULL)
630 {
631 printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
632 return 1;
633 }
634 printf("%s opened\n",filename_try);
635
636 if (opt_do_list==1)
637 ret_value = do_list(uf);
638 else if (opt_do_extract==1)
639 {
640 #ifdef _WIN32
641 if (opt_extractdir && _chdir(dirname))
642 #else
643 if (opt_extractdir && chdir(dirname))
644 #endif
645 {
646 printf("Error changing into %s, aborting\n", dirname);
647 exit(-1);
648 }
649
650 if (filename_to_extract == NULL)
651 ret_value = do_extract(uf, opt_do_extract_withoutpath, opt_overwrite, password);
652 else
653 ret_value = do_extract_onefile(uf, filename_to_extract, opt_do_extract_withoutpath, opt_overwrite, password);
654 }
655
656 unzClose(uf);
657
658 return ret_value;
659 }