1 /*
2 miniunz.c
3 Version 1.01h, December 28th, 2009
4
5 Copyright (C) 1998-2009 Gilles Vollant
6 */
7
8
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <time.h>
13 #include <errno.h>
14 #include <fcntl.h>
15
16 #ifdef unix
17 # include <unistd.h>
18 # include <utime.h>
19 #else
20 # include <direct.h>
21 # include <io.h>
22 #endif
23
24 #include "unzip.h"
25
26 #define CASESENSITIVITY (0)
27 #define WRITEBUFFERSIZE (8192)
28 #define MAXFILENAME (256)
29
30 #ifdef WIN32
31 #define USEWIN32IOAPI
32 #include "iowin32.h"
33 #endif
34 /*
35 mini unzip, demo of unzip package
36
37 usage :
38 Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir]
39
40 list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT
41 if it exists
42 */
43
44
45 /* change_file_date : change the date/time of a file
46 filename : the filename of the file where date/time must be modified
47 dosdate : the new date at the MSDos format (4 bytes)
48 tmu_date : the SAME new date at the tm_unz format */
change_file_date(filename,dosdate,tmu_date)49 void change_file_date(filename,dosdate,tmu_date)
50 const char *filename;
51 uLong dosdate;
52 tm_unz tmu_date;
53 {
54 #ifdef WIN32
55 HANDLE hFile;
56 FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite;
57
58 hFile = CreateFile(filename,GENERIC_READ | GENERIC_WRITE,
59 0,NULL,OPEN_EXISTING,0,NULL);
60 GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite);
61 DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal);
62 LocalFileTimeToFileTime(&ftLocal,&ftm);
63 SetFileTime(hFile,&ftm,&ftLastAcc,&ftm);
64 CloseHandle(hFile);
65 #else
66 #ifdef unix
67 struct utimbuf ut;
68 struct tm newdate;
69 newdate.tm_sec = tmu_date.tm_sec;
70 newdate.tm_min=tmu_date.tm_min;
71 newdate.tm_hour=tmu_date.tm_hour;
72 newdate.tm_mday=tmu_date.tm_mday;
73 newdate.tm_mon=tmu_date.tm_mon;
74 if (tmu_date.tm_year > 1900)
75 newdate.tm_year=tmu_date.tm_year - 1900;
76 else
77 newdate.tm_year=tmu_date.tm_year ;
78 newdate.tm_isdst=-1;
79
80 ut.actime=ut.modtime=mktime(&newdate);
81 utime(filename,&ut);
82 #endif
83 #endif
84 }
85
86
87 /* mymkdir and change_file_date are not 100 % portable
88 As I don't know well Unix, I wait feedback for the unix portion */
89
mymkdir(dirname)90 int mymkdir(dirname)
91 const char* dirname;
92 {
93 int ret=0;
94 #ifdef WIN32
95 ret = mkdir(dirname);
96 #else
97 #ifdef unix
98 ret = mkdir (dirname,0775);
99 #endif
100 #endif
101 return ret;
102 }
103
makedir(newdir)104 int makedir (newdir)
105 char *newdir;
106 {
107 char *buffer ;
108 char *p;
109 int len = (int)strlen(newdir);
110
111 if (len <= 0)
112 return 0;
113
114 buffer = (char*)malloc(len+1);
115 if (buffer==NULL)
116 {
117 printf("Error allocating memory\n");
118 return UNZ_INTERNALERROR;
119 }
120 strcpy(buffer,newdir);
121
122 if (buffer[len-1] == '/') {
123 buffer[len-1] = '\0';
124 }
125 if (mymkdir(buffer) == 0)
126 {
127 free(buffer);
128 return 1;
129 }
130
131 p = buffer+1;
132 while (1)
133 {
134 char hold;
135
136 while(*p && *p != '\\' && *p != '/')
137 p++;
138 hold = *p;
139 *p = 0;
140 if ((mymkdir(buffer) == -1) && (errno == ENOENT))
141 {
142 printf("couldn't create directory %s\n",buffer);
143 free(buffer);
144 return 0;
145 }
146 if (hold == 0)
147 break;
148 *p++ = hold;
149 }
150 free(buffer);
151 return 1;
152 }
153
do_banner()154 void do_banner()
155 {
156 printf("MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant\n");
157 printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
158 }
159
do_help()160 void do_help()
161 {
162 printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
163 " -e Extract without pathname (junk paths)\n" \
164 " -x Extract with pathname\n" \
165 " -v list files\n" \
166 " -l list files\n" \
167 " -d directory to extract into\n" \
168 " -o overwrite files without prompting\n" \
169 " -p extract crypted file using password\n\n");
170 }
171
172
do_list(uf)173 int do_list(uf)
174 unzFile uf;
175 {
176 uLong i;
177 unz_global_info gi;
178 int err;
179
180 err = unzGetGlobalInfo (uf,&gi);
181 if (err!=UNZ_OK)
182 printf("error %d with zipfile in unzGetGlobalInfo \n",err);
183 printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
184 printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
185 for (i=0;i<gi.number_entry;i++)
186 {
187 char filename_inzip[256];
188 unz_file_info file_info;
189 uLong ratio=0;
190 const char *string_method;
191 char charCrypt=' ';
192 err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
193 if (err!=UNZ_OK)
194 {
195 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
196 break;
197 }
198 if (file_info.uncompressed_size>0)
199 ratio = (file_info.compressed_size*100)/file_info.uncompressed_size;
200
201 /* display a '*' if the file is crypted */
202 if ((file_info.flag & 1) != 0)
203 charCrypt='*';
204
205 if (file_info.compression_method==0)
206 string_method="Stored";
207 else
208 if (file_info.compression_method==Z_DEFLATED)
209 {
210 uInt iLevel=(uInt)((file_info.flag & 0x6)/2);
211 if (iLevel==0)
212 string_method="Defl:N";
213 else if (iLevel==1)
214 string_method="Defl:X";
215 else if ((iLevel==2) || (iLevel==3))
216 string_method="Defl:F"; /* 2:fast , 3 : extra fast*/
217 }
218 #ifdef HAVE_BZIP2
219 else
220 if (file_info.compression_method==Z_BZIP2ED)
221 {
222 string_method="BZip2 ";
223 }
224 #endif
225 else
226 string_method="Unkn. ";
227
228 printf("%7lu %6s%c%7lu %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n",
229 file_info.uncompressed_size,string_method,
230 charCrypt,
231 file_info.compressed_size,
232 ratio,
233 (uLong)file_info.tmu_date.tm_mon + 1,
234 (uLong)file_info.tmu_date.tm_mday,
235 (uLong)file_info.tmu_date.tm_year % 100,
236 (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,
237 (uLong)file_info.crc,filename_inzip);
238 if ((i+1)<gi.number_entry)
239 {
240 err = unzGoToNextFile(uf);
241 if (err!=UNZ_OK)
242 {
243 printf("error %d with zipfile in unzGoToNextFile\n",err);
244 break;
245 }
246 }
247 }
248
249 return 0;
250 }
251
252
do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)253 int do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)
254 unzFile uf;
255 const int* popt_extract_without_path;
256 int* popt_overwrite;
257 const char* password;
258 {
259 char filename_inzip[256];
260 char* filename_withoutpath;
261 char* p;
262 int err=UNZ_OK;
263 FILE *fout=NULL;
264 void* buf;
265 uInt size_buf;
266
267 unz_file_info file_info;
268 uLong ratio=0;
269 err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
270
271 if (err!=UNZ_OK)
272 {
273 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
274 return err;
275 }
276
277 size_buf = WRITEBUFFERSIZE;
278 buf = (void*)malloc(size_buf);
279 if (buf==NULL)
280 {
281 printf("Error allocating memory\n");
282 return UNZ_INTERNALERROR;
283 }
284
285 p = filename_withoutpath = filename_inzip;
286 while ((*p) != '\0')
287 {
288 if (((*p)=='/') || ((*p)=='\\'))
289 filename_withoutpath = p+1;
290 p++;
291 }
292
293 if ((*filename_withoutpath)=='\0')
294 {
295 if ((*popt_extract_without_path)==0)
296 {
297 printf("creating directory: %s\n",filename_inzip);
298 mymkdir(filename_inzip);
299 }
300 }
301 else
302 {
303 const char* write_filename;
304 int skip=0;
305
306 if ((*popt_extract_without_path)==0)
307 write_filename = filename_inzip;
308 else
309 write_filename = filename_withoutpath;
310
311 err = unzOpenCurrentFilePassword(uf,password);
312 if (err!=UNZ_OK)
313 {
314 printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
315 }
316
317 if (((*popt_overwrite)==0) && (err==UNZ_OK))
318 {
319 char rep=0;
320 FILE* ftestexist;
321 ftestexist = fopen(write_filename,"rb");
322 if (ftestexist!=NULL)
323 {
324 fclose(ftestexist);
325 do
326 {
327 char answer[128];
328 int ret;
329
330 printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
331 ret = scanf("%1s",answer);
332 if (ret != 1)
333 {
334 exit(EXIT_FAILURE);
335 }
336 rep = answer[0] ;
337 if ((rep>='a') && (rep<='z'))
338 rep -= 0x20;
339 }
340 while ((rep!='Y') && (rep!='N') && (rep!='A'));
341 }
342
343 if (rep == 'N')
344 skip = 1;
345
346 if (rep == 'A')
347 *popt_overwrite=1;
348 }
349
350 if ((skip==0) && (err==UNZ_OK))
351 {
352 fout=fopen(write_filename,"wb");
353
354 /* some zipfile don't contain directory alone before file */
355 if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
356 (filename_withoutpath!=(char*)filename_inzip))
357 {
358 char c=*(filename_withoutpath-1);
359 *(filename_withoutpath-1)='\0';
360 makedir(write_filename);
361 *(filename_withoutpath-1)=c;
362 fout=fopen(write_filename,"wb");
363 }
364
365 if (fout==NULL)
366 {
367 printf("error opening %s\n",write_filename);
368 }
369 }
370
371 if (fout!=NULL)
372 {
373 printf(" extracting: %s\n",write_filename);
374
375 do
376 {
377 err = unzReadCurrentFile(uf,buf,size_buf);
378 if (err<0)
379 {
380 printf("error %d with zipfile in unzReadCurrentFile\n",err);
381 break;
382 }
383 if (err>0)
384 if (fwrite(buf,err,1,fout)!=1)
385 {
386 printf("error in writing extracted file\n");
387 err=UNZ_ERRNO;
388 break;
389 }
390 }
391 while (err>0);
392 if (fout)
393 fclose(fout);
394
395 if (err==0)
396 change_file_date(write_filename,file_info.dosDate,
397 file_info.tmu_date);
398 }
399
400 if (err==UNZ_OK)
401 {
402 err = unzCloseCurrentFile (uf);
403 if (err!=UNZ_OK)
404 {
405 printf("error %d with zipfile in unzCloseCurrentFile\n",err);
406 }
407 }
408 else
409 unzCloseCurrentFile(uf); /* don't lose the error */
410 }
411
412 free(buf);
413 return err;
414 }
415
416
do_extract(uf,opt_extract_without_path,opt_overwrite,password)417 int do_extract(uf,opt_extract_without_path,opt_overwrite,password)
418 unzFile uf;
419 int opt_extract_without_path;
420 int opt_overwrite;
421 const char* password;
422 {
423 uLong i;
424 unz_global_info gi;
425 int err;
426 FILE* fout=NULL;
427
428 err = unzGetGlobalInfo (uf,&gi);
429 if (err!=UNZ_OK)
430 printf("error %d with zipfile in unzGetGlobalInfo \n",err);
431
432 for (i=0;i<gi.number_entry;i++)
433 {
434 if (do_extract_currentfile(uf,&opt_extract_without_path,
435 &opt_overwrite,
436 password) != UNZ_OK)
437 break;
438
439 if ((i+1)<gi.number_entry)
440 {
441 err = unzGoToNextFile(uf);
442 if (err!=UNZ_OK)
443 {
444 printf("error %d with zipfile in unzGoToNextFile\n",err);
445 break;
446 }
447 }
448 }
449
450 return 0;
451 }
452
do_extract_onefile(uf,filename,opt_extract_without_path,opt_overwrite,password)453 int do_extract_onefile(uf,filename,opt_extract_without_path,opt_overwrite,password)
454 unzFile uf;
455 const char* filename;
456 int opt_extract_without_path;
457 int opt_overwrite;
458 const char* password;
459 {
460 int err = UNZ_OK;
461 if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK)
462 {
463 printf("file %s not found in the zipfile\n",filename);
464 return 2;
465 }
466
467 if (do_extract_currentfile(uf,&opt_extract_without_path,
468 &opt_overwrite,
469 password) == UNZ_OK)
470 return 0;
471 else
472 return 1;
473 }
474
475
main(argc,argv)476 int main(argc,argv)
477 int argc;
478 char *argv[];
479 {
480 const char *zipfilename=NULL;
481 const char *filename_to_extract=NULL;
482 const char *password=NULL;
483 char filename_try[MAXFILENAME+16] = "";
484 int i;
485 int ret_value=0;
486 int opt_do_list=0;
487 int opt_do_extract=1;
488 int opt_do_extract_withoutpath=0;
489 int opt_overwrite=0;
490 int opt_extractdir=0;
491 const char *dirname=NULL;
492 unzFile uf=NULL;
493
494 do_banner();
495 if (argc==1)
496 {
497 do_help();
498 return 0;
499 }
500 else
501 {
502 for (i=1;i<argc;i++)
503 {
504 if ((*argv[i])=='-')
505 {
506 const char *p=argv[i]+1;
507
508 while ((*p)!='\0')
509 {
510 char c=*(p++);;
511 if ((c=='l') || (c=='L'))
512 opt_do_list = 1;
513 if ((c=='v') || (c=='V'))
514 opt_do_list = 1;
515 if ((c=='x') || (c=='X'))
516 opt_do_extract = 1;
517 if ((c=='e') || (c=='E'))
518 opt_do_extract = opt_do_extract_withoutpath = 1;
519 if ((c=='o') || (c=='O'))
520 opt_overwrite=1;
521 if ((c=='d') || (c=='D'))
522 {
523 opt_extractdir=1;
524 dirname=argv[i+1];
525 }
526
527 if (((c=='p') || (c=='P')) && (i+1<argc))
528 {
529 password=argv[i+1];
530 i++;
531 }
532 }
533 }
534 else
535 {
536 if (zipfilename == NULL)
537 zipfilename = argv[i];
538 else if ((filename_to_extract==NULL) && (!opt_extractdir))
539 filename_to_extract = argv[i] ;
540 }
541 }
542 }
543
544 if (zipfilename!=NULL)
545 {
546
547 # ifdef USEWIN32IOAPI
548 zlib_filefunc_def ffunc;
549 # endif
550
551 strncpy(filename_try, zipfilename,MAXFILENAME-1);
552 /* strncpy doesnt append the trailing NULL, of the string is too long. */
553 filename_try[ MAXFILENAME ] = '\0';
554
555 # ifdef USEWIN32IOAPI
556 fill_win32_filefunc(&ffunc);
557 uf = unzOpen2(zipfilename,&ffunc);
558 # else
559 uf = unzOpen(zipfilename);
560 # endif
561 if (uf==NULL)
562 {
563 strcat(filename_try,".zip");
564 # ifdef USEWIN32IOAPI
565 uf = unzOpen2(filename_try,&ffunc);
566 # else
567 uf = unzOpen(filename_try);
568 # endif
569 }
570 }
571
572 if (uf==NULL)
573 {
574 printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
575 return 1;
576 }
577 printf("%s opened\n",filename_try);
578
579 if (opt_do_list==1)
580 ret_value = do_list(uf);
581 else if (opt_do_extract==1)
582 {
583 if (opt_extractdir && chdir(dirname))
584 {
585 printf("Error changing into %s, aborting\n", dirname);
586 exit(-1);
587 }
588
589 if (filename_to_extract == NULL)
590 ret_value = do_extract(uf,opt_do_extract_withoutpath,opt_overwrite,password);
591 else
592 ret_value = do_extract_onefile(uf,filename_to_extract,
593 opt_do_extract_withoutpath,opt_overwrite,password);
594 }
595
596 unzClose(uf);
597
598 return ret_value ;
599 }
600