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
49 #ifdef _WIN32
50 # include <direct.h>
51 # include <io.h>
52 #else
53 # include <unistd.h>
54 # include <utime.h>
55 #endif
56
57
58 #include "unzip.h"
59
60 #define CASESENSITIVITY (0)
61 #define WRITEBUFFERSIZE (8192)
62 #define MAXFILENAME (256)
63
64 #ifdef _WIN32
65 #define USEWIN32IOAPI
66 #include "iowin32.h"
67 #endif
68 /*
69 mini unzip, demo of unzip package
70
71 usage :
72 Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir]
73
74 list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT
75 if it exists
76 */
77
78
79 /* change_file_date : change the date/time of a file
80 filename : the filename of the file where date/time must be modified
81 dosdate : the new date at the MSDos format (4 bytes)
82 tmu_date : the SAME new date at the tm_unz format */
83 void change_file_date(filename,dosdate,tmu_date)
84 const char *filename;
85 uLong dosdate;
86 tm_unz tmu_date;
87 {
88 #ifdef _WIN32
89 HANDLE hFile;
90 FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite;
91
92 hFile = CreateFileA(filename,GENERIC_READ | GENERIC_WRITE,
93 0,NULL,OPEN_EXISTING,0,NULL);
94 GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite);
95 DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal);
96 LocalFileTimeToFileTime(&ftLocal,&ftm);
97 SetFileTime(hFile,&ftm,&ftLastAcc,&ftm);
98 CloseHandle(hFile);
99 #else
100 #ifdef unix || __APPLE__
101 struct utimbuf ut;
102 struct tm newdate;
103 newdate.tm_sec = tmu_date.tm_sec;
104 newdate.tm_min=tmu_date.tm_min;
105 newdate.tm_hour=tmu_date.tm_hour;
106 newdate.tm_mday=tmu_date.tm_mday;
107 newdate.tm_mon=tmu_date.tm_mon;
108 if (tmu_date.tm_year > 1900)
109 newdate.tm_year=tmu_date.tm_year - 1900;
110 else
111 newdate.tm_year=tmu_date.tm_year ;
112 newdate.tm_isdst=-1;
113
114 ut.actime=ut.modtime=mktime(&newdate);
115 utime(filename,&ut);
116 #endif
117 #endif
118 }
119
120
121 /* mymkdir and change_file_date are not 100 % portable
122 As I don't know well Unix, I wait feedback for the unix portion */
123
124 int mymkdir(dirname)
125 const char* dirname;
126 {
127 int ret=0;
128 #ifdef _WIN32
129 ret = _mkdir(dirname);
130 #elif unix
131 ret = mkdir (dirname,0775);
132 #elif __APPLE__
133 ret = mkdir (dirname,0775);
134 #endif
135 return ret;
136 }
137
138 int makedir (newdir)
139 char *newdir;
140 {
141 char *buffer ;
142 char *p;
143 int len = (int)strlen(newdir);
144
145 if (len <= 0)
146 return 0;
147
148 buffer = (char*)malloc(len+1);
149 if (buffer==NULL)
150 {
151 printf("Error allocating memory\n");
152 return UNZ_INTERNALERROR;
153 }
154 strcpy(buffer,newdir);
155
156 if (buffer[len-1] == '/') {
157 buffer[len-1] = '\0';
158 }
159 if (mymkdir(buffer) == 0)
160 {
161 free(buffer);
162 return 1;
163 }
164
165 p = buffer+1;
166 while (1)
167 {
168 char hold;
169
170 while(*p && *p != '\\' && *p != '/')
171 p++;
172 hold = *p;
173 *p = 0;
174 if ((mymkdir(buffer) == -1) && (errno == ENOENT))
175 {
176 printf("couldn't create directory %s\n",buffer);
177 free(buffer);
178 return 0;
179 }
180 if (hold == 0)
181 break;
182 *p++ = hold;
183 }
184 free(buffer);
185 return 1;
186 }
187
188 void do_banner()
189 {
190 printf("MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant\n");
191 printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
192 }
193
194 void do_help()
195 {
196 printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
197 " -e Extract without pathname (junk paths)\n" \
198 " -x Extract with pathname\n" \
199 " -v list files\n" \
200 " -l list files\n" \
201 " -d directory to extract into\n" \
202 " -o overwrite files without prompting\n" \
203 " -p extract crypted file using password\n\n");
204 }
205
206 void Display64BitsSize(ZPOS64_T n, int size_char)
207 {
208 /* to avoid compatibility problem , we do here the conversion */
209 char number[21];
210 int offset=19;
211 int pos_string = 19;
212 number[20]=0;
213 for (;;) {
214 number[offset]=(char)((n%10)+'0');
215 if (number[offset] != '0')
216 pos_string=offset;
217 n/=10;
218 if (offset==0)
219 break;
220 offset--;
221 }
222 {
223 int size_display_string = 19-pos_string;
224 while (size_char > size_display_string)
225 {
226 size_char--;
227 printf(" ");
228 }
229 }
230
231 printf("%s",&number[pos_string]);
232 }
233
234 int do_list(uf)
235 unzFile uf;
236 {
237 uLong i;
238 unz_global_info64 gi;
239 int err;
240
241 err = unzGetGlobalInfo64(uf,&gi);
242 if (err!=UNZ_OK)
243 printf("error %d with zipfile in unzGetGlobalInfo \n",err);
244 printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
245 printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
246 for (i=0;i<gi.number_entry;i++)
247 {
248 char filename_inzip[256];
249 unz_file_info64 file_info;
250 uLong ratio=0;
251 const char *string_method;
252 char charCrypt=' ';
253 err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
254 if (err!=UNZ_OK)
255 {
256 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
257 break;
258 }
259 if (file_info.uncompressed_size>0)
260 ratio = (uLong)((file_info.compressed_size*100)/file_info.uncompressed_size);
261
262 /* display a '*' if the file is crypted */
263 if ((file_info.flag & 1) != 0)
264 charCrypt='*';
265
266 if (file_info.compression_method==0)
267 string_method="Stored";
268 else
269 if (file_info.compression_method==Z_DEFLATED)
270 {
271 uInt iLevel=(uInt)((file_info.flag & 0x6)/2);
272 if (iLevel==0)
273 string_method="Defl:N";
274 else if (iLevel==1)
275 string_method="Defl:X";
276 else if ((iLevel==2) || (iLevel==3))
277 string_method="Defl:F"; /* 2:fast , 3 : extra fast*/
278 }
279 else
280 if (file_info.compression_method==Z_BZIP2ED)
281 {
282 string_method="BZip2 ";
283 }
284 else
285 string_method="Unkn. ";
286
287 Display64BitsSize(file_info.uncompressed_size,7);
288 printf(" %6s%c",string_method,charCrypt);
289 Display64BitsSize(file_info.compressed_size,7);
290 printf(" %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n",
291 ratio,
292 (uLong)file_info.tmu_date.tm_mon + 1,
293 (uLong)file_info.tmu_date.tm_mday,
294 (uLong)file_info.tmu_date.tm_year % 100,
295 (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,
296 (uLong)file_info.crc,filename_inzip);
297 if ((i+1)<gi.number_entry)
298 {
299 err = unzGoToNextFile(uf);
300 if (err!=UNZ_OK)
301 {
302 printf("error %d with zipfile in unzGoToNextFile\n",err);
303 break;
304 }
305 }
306 }
307
308 return 0;
309 }
310
311
312 int do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)
313 unzFile uf;
314 const int* popt_extract_without_path;
315 int* popt_overwrite;
316 const char* password;
317 {
318 char filename_inzip[256];
319 char* filename_withoutpath;
320 char* p;
321 int err=UNZ_OK;
322 FILE *fout=NULL;
323 void* buf;
324 uInt size_buf;
325
326 unz_file_info64 file_info;
327 uLong ratio=0;
328 err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
329
330 if (err!=UNZ_OK)
331 {
332 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
333 return err;
334 }
335
336 size_buf = WRITEBUFFERSIZE;
337 buf = (void*)malloc(size_buf);
338 if (buf==NULL)
339 {
340 printf("Error allocating memory\n");
341 return UNZ_INTERNALERROR;
342 }
343
344 p = filename_withoutpath = filename_inzip;
345 while ((*p) != '\0')
346 {
347 if (((*p)=='/') || ((*p)=='\\'))
348 filename_withoutpath = p+1;
349 p++;
350 }
351
352 if ((*filename_withoutpath)=='\0')
353 {
354 if ((*popt_extract_without_path)==0)
355 {
356 printf("creating directory: %s\n",filename_inzip);
357 mymkdir(filename_inzip);
358 }
359 }
360 else
361 {
362 const char* write_filename;
363 int skip=0;
364
365 if ((*popt_extract_without_path)==0)
366 write_filename = filename_inzip;
367 else
368 write_filename = filename_withoutpath;
369
370 err = unzOpenCurrentFilePassword(uf,password);
371 if (err!=UNZ_OK)
372 {
373 printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
374 }
375
376 if (((*popt_overwrite)==0) && (err==UNZ_OK))
377 {
378 char rep=0;
379 FILE* ftestexist;
380 ftestexist = FOPEN_FUNC(write_filename,"rb");
381 if (ftestexist!=NULL)
382 {
383 fclose(ftestexist);
384 do
385 {
386 char answer[128];
387 int ret;
388
389 printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
390 ret = scanf("%1s",answer);
391 if (ret != 1)
392 {
393 exit(EXIT_FAILURE);
394 }
395 rep = answer[0] ;
396 if ((rep>='a') && (rep<='z'))
397 rep -= 0x20;
398 }
399 while ((rep!='Y') && (rep!='N') && (rep!='A'));
400 }
401
402 if (rep == 'N')
403 skip = 1;
404
405 if (rep == 'A')
406 *popt_overwrite=1;
407 }
408
409 if ((skip==0) && (err==UNZ_OK))
410 {
411 fout=FOPEN_FUNC(write_filename,"wb");
412 /* some zipfile don't contain directory alone before file */
413 if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
414 (filename_withoutpath!=(char*)filename_inzip))
415 {
416 char c=*(filename_withoutpath-1);
417 *(filename_withoutpath-1)='\0';
418 makedir(write_filename);
419 *(filename_withoutpath-1)=c;
420 fout=FOPEN_FUNC(write_filename,"wb");
421 }
422
423 if (fout==NULL)
424 {
425 printf("error opening %s\n",write_filename);
426 }
427 }
428
429 if (fout!=NULL)
430 {
431 printf(" extracting: %s\n",write_filename);
432
433 do
434 {
435 err = unzReadCurrentFile(uf,buf,size_buf);
436 if (err<0)
437 {
438 printf("error %d with zipfile in unzReadCurrentFile\n",err);
439 break;
440 }
441 if (err>0)
442 if (fwrite(buf,err,1,fout)!=1)
443 {
444 printf("error in writing extracted file\n");
445 err=UNZ_ERRNO;
446 break;
447 }
448 }
449 while (err>0);
450 if (fout)
451 fclose(fout);
452
453 if (err==0)
454 change_file_date(write_filename,file_info.dosDate,
455 file_info.tmu_date);
456 }
457
458 if (err==UNZ_OK)
459 {
460 err = unzCloseCurrentFile (uf);
461 if (err!=UNZ_OK)
462 {
463 printf("error %d with zipfile in unzCloseCurrentFile\n",err);
464 }
465 }
466 else
467 unzCloseCurrentFile(uf); /* don't lose the error */
468 }
469
470 free(buf);
471 return err;
472 }
473
474
475 int do_extract(uf,opt_extract_without_path,opt_overwrite,password)
476 unzFile uf;
477 int opt_extract_without_path;
478 int opt_overwrite;
479 const char* password;
480 {
481 uLong i;
482 unz_global_info64 gi;
483 int err;
484 FILE* fout=NULL;
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 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 int err = UNZ_OK;
519 if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK)
520 {
521 printf("file %s not found in the zipfile\n",filename);
522 return 2;
523 }
524
525 if (do_extract_currentfile(uf,&opt_extract_without_path,
526 &opt_overwrite,
527 password) == UNZ_OK)
528 return 0;
529 else
530 return 1;
531 }
532
533
534 int main(argc,argv)
535 int argc;
536 char *argv[];
537 {
538 const char *zipfilename=NULL;
539 const char *filename_to_extract=NULL;
540 const char *password=NULL;
541 char filename_try[MAXFILENAME+16] = "";
542 int i;
543 int ret_value=0;
544 int opt_do_list=0;
545 int opt_do_extract=1;
546 int opt_do_extract_withoutpath=0;
547 int opt_overwrite=0;
548 int opt_extractdir=0;
549 const char *dirname=NULL;
550 unzFile uf=NULL;
551
552 do_banner();
553 if (argc==1)
554 {
555 do_help();
556 return 0;
557 }
558 else
559 {
560 for (i=1;i<argc;i++)
561 {
562 if ((*argv[i])=='-')
563 {
564 const char *p=argv[i]+1;
565
566 while ((*p)!='\0')
567 {
568 char c=*(p++);;
569 if ((c=='l') || (c=='L'))
570 opt_do_list = 1;
571 if ((c=='v') || (c=='V'))
572 opt_do_list = 1;
573 if ((c=='x') || (c=='X'))
574 opt_do_extract = 1;
575 if ((c=='e') || (c=='E'))
576 opt_do_extract = opt_do_extract_withoutpath = 1;
577 if ((c=='o') || (c=='O'))
578 opt_overwrite=1;
579 if ((c=='d') || (c=='D'))
580 {
581 opt_extractdir=1;
582 dirname=argv[i+1];
583 }
584
585 if (((c=='p') || (c=='P')) && (i+1<argc))
586 {
587 password=argv[i+1];
588 i++;
589 }
590 }
591 }
592 else
593 {
594 if (zipfilename == NULL)
595 zipfilename = argv[i];
596 else if ((filename_to_extract==NULL) && (!opt_extractdir))
597 filename_to_extract = argv[i] ;
598 }
599 }
600 }
601
602 if (zipfilename!=NULL)
603 {
604
605 # ifdef USEWIN32IOAPI
606 zlib_filefunc64_def ffunc;
607 # endif
608
609 strncpy(filename_try, zipfilename,MAXFILENAME-1);
610 /* strncpy doesnt append the trailing NULL, of the string is too long. */
611 filename_try[ MAXFILENAME ] = '\0';
612
613 # ifdef USEWIN32IOAPI
614 fill_win32_filefunc64A(&ffunc);
615 uf = unzOpen2_64(zipfilename,&ffunc);
616 # else
617 uf = unzOpen64(zipfilename);
618 # endif
619 if (uf==NULL)
620 {
621 strcat(filename_try,".zip");
622 # ifdef USEWIN32IOAPI
623 uf = unzOpen2_64(filename_try,&ffunc);
624 # else
625 uf = unzOpen64(filename_try);
626 # endif
627 }
628 }
629
630 if (uf==NULL)
631 {
632 printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
633 return 1;
634 }
635 printf("%s opened\n",filename_try);
636
637 if (opt_do_list==1)
638 ret_value = do_list(uf);
639 else if (opt_do_extract==1)
640 {
641 #ifdef _WIN32
642 if (opt_extractdir && _chdir(dirname))
643 #else
644 if (opt_extractdir && chdir(dirname))
645 #endif
646 {
647 printf("Error changing into %s, aborting\n", dirname);
648 exit(-1);
649 }
650
651 if (filename_to_extract == NULL)
652 ret_value = do_extract(uf, opt_do_extract_withoutpath, opt_overwrite, password);
653 else
654 ret_value = do_extract_onefile(uf, filename_to_extract, opt_do_extract_withoutpath, opt_overwrite, password);
655 }
656
657 unzClose(uf);
658
659 return ret_value;
660 }