1 /*
2 miniunz.c
3 Version 1.01e, February 12th, 2005
4
5 Copyright (C) 1998-2005 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 strcpy(buffer,newdir);
116
117 if (buffer[len-1] == '/') {
118 buffer[len-1] = '\0';
119 }
120 if (mymkdir(buffer) == 0) {
121 free(buffer);
122 return 1;
123 }
124
125 p = buffer+1;
126 while (1)
127 {
128 char hold;
129
130 while(*p && *p != '\\' && *p != '/')
131 p++;
132 hold = *p;
133 *p = 0;
134 if ((mymkdir(buffer) == -1) && (errno == ENOENT))
135 {
136 printf("couldn't create directory %s\n",buffer);
137 free(buffer);
138 return 0;
139 }
140 if (hold == 0)
141 break;
142 *p++ = hold;
143 }
144 free(buffer);
145 return 1;
146 }
147
do_banner()148 void do_banner()
149 {
150 printf("MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant\n");
151 printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
152 }
153
do_help()154 void do_help()
155 {
156 printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
157 " -e Extract without pathname (junk paths)\n" \
158 " -x Extract with pathname\n" \
159 " -v list files\n" \
160 " -l list files\n" \
161 " -d directory to extract into\n" \
162 " -o overwrite files without prompting\n" \
163 " -p extract crypted file using password\n\n");
164 }
165
166
do_list(uf)167 int do_list(uf)
168 unzFile uf;
169 {
170 uLong i;
171 unz_global_info gi;
172 int err;
173
174 err = unzGetGlobalInfo (uf,&gi);
175 if (err!=UNZ_OK)
176 printf("error %d with zipfile in unzGetGlobalInfo\n",err);
177 printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
178 printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
179 for (i=0;i<gi.number_entry;i++)
180 {
181 char filename_inzip[256];
182 unz_file_info file_info;
183 uLong ratio=0;
184 const char *string_method;
185 char charCrypt=' ';
186 err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
187 if (err!=UNZ_OK)
188 {
189 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
190 break;
191 }
192 if (file_info.uncompressed_size>0)
193 ratio = (file_info.compressed_size*100)/file_info.uncompressed_size;
194
195 /* display a '*' if the file is crypted */
196 if ((file_info.flag & 1) != 0)
197 charCrypt='*';
198
199 if (file_info.compression_method==0)
200 string_method="Stored";
201 else
202 if (file_info.compression_method==Z_DEFLATED)
203 {
204 uInt iLevel=(uInt)((file_info.flag & 0x6)/2);
205 if (iLevel==0)
206 string_method="Defl:N";
207 else if (iLevel==1)
208 string_method="Defl:X";
209 else if ((iLevel==2) || (iLevel==3))
210 string_method="Defl:F"; /* 2:fast , 3 : extra fast*/
211 }
212 else
213 string_method="Unkn. ";
214
215 printf("%7lu %6s%c%7lu %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n",
216 file_info.uncompressed_size,string_method,
217 charCrypt,
218 file_info.compressed_size,
219 ratio,
220 (uLong)file_info.tmu_date.tm_mon + 1,
221 (uLong)file_info.tmu_date.tm_mday,
222 (uLong)file_info.tmu_date.tm_year % 100,
223 (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,
224 (uLong)file_info.crc,filename_inzip);
225 if ((i+1)<gi.number_entry)
226 {
227 err = unzGoToNextFile(uf);
228 if (err!=UNZ_OK)
229 {
230 printf("error %d with zipfile in unzGoToNextFile\n",err);
231 break;
232 }
233 }
234 }
235 return 0;
236 }
237
238
do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)239 int do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)
240 unzFile uf;
241 const int* popt_extract_without_path;
242 int* popt_overwrite;
243 const char* password;
244 {
245 char filename_inzip[256];
246 char* filename_withoutpath;
247 char* p;
248 int err=UNZ_OK;
249 FILE *fout=NULL;
250 void* buf;
251 uInt size_buf;
252
253 unz_file_info file_info;
254 uLong ratio=0;
255 err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
256
257 if (err!=UNZ_OK)
258 {
259 printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
260 return err;
261 }
262
263 size_buf = WRITEBUFFERSIZE;
264 buf = (void*)malloc(size_buf);
265 if (buf==NULL)
266 {
267 printf("Error allocating memory\n");
268 return UNZ_INTERNALERROR;
269 }
270
271 p = filename_withoutpath = filename_inzip;
272 while ((*p) != '\0')
273 {
274 if (((*p)=='/') || ((*p)=='\\'))
275 filename_withoutpath = p+1;
276 p++;
277 }
278
279 if ((*filename_withoutpath)=='\0')
280 {
281 if ((*popt_extract_without_path)==0)
282 {
283 printf("creating directory: %s\n",filename_inzip);
284 mymkdir(filename_inzip);
285 }
286 }
287 else
288 {
289 const char* write_filename;
290 int skip=0;
291
292 if ((*popt_extract_without_path)==0)
293 write_filename = filename_inzip;
294 else
295 write_filename = filename_withoutpath;
296
297 err = unzOpenCurrentFilePassword(uf,password);
298 if (err!=UNZ_OK)
299 {
300 printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
301 }
302
303 if (((*popt_overwrite)==0) && (err==UNZ_OK))
304 {
305 char rep=0;
306 FILE* ftestexist;
307 ftestexist = fopen(write_filename,"rb");
308 if (ftestexist!=NULL)
309 {
310 fclose(ftestexist);
311 do
312 {
313 char answer[128];
314 int ret;
315
316 printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
317 ret = scanf("%1s",answer);
318 if (ret != 1)
319 {
320 exit(EXIT_FAILURE);
321 }
322 rep = answer[0] ;
323 if ((rep>='a') && (rep<='z'))
324 rep -= 0x20;
325 }
326 while ((rep!='Y') && (rep!='N') && (rep!='A'));
327 }
328
329 if (rep == 'N')
330 skip = 1;
331
332 if (rep == 'A')
333 *popt_overwrite=1;
334 }
335
336 if ((skip==0) && (err==UNZ_OK))
337 {
338 fout=fopen(write_filename,"wb");
339
340 /* some zipfile don't contain directory alone before file */
341 if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
342 (filename_withoutpath!=(char*)filename_inzip))
343 {
344 char c=*(filename_withoutpath-1);
345 *(filename_withoutpath-1)='\0';
346 makedir(write_filename);
347 *(filename_withoutpath-1)=c;
348 fout=fopen(write_filename,"wb");
349 }
350
351 if (fout==NULL)
352 {
353 printf("error opening %s\n",write_filename);
354 }
355 }
356
357 if (fout!=NULL)
358 {
359 printf(" extracting: %s\n",write_filename);
360
361 do
362 {
363 err = unzReadCurrentFile(uf,buf,size_buf);
364 if (err<0)
365 {
366 printf("error %d with zipfile in unzReadCurrentFile\n",err);
367 break;
368 }
369 if (err>0)
370 if (fwrite(buf,err,1,fout)!=1)
371 {
372 printf("error in writing extracted file\n");
373 err=UNZ_ERRNO;
374 break;
375 }
376 }
377 while (err>0);
378 if (fout)
379 fclose(fout);
380
381 if (err==0)
382 change_file_date(write_filename,file_info.dosDate,
383 file_info.tmu_date);
384 }
385
386 if (err==UNZ_OK)
387 {
388 err = unzCloseCurrentFile (uf);
389 if (err!=UNZ_OK)
390 {
391 printf("error %d with zipfile in unzCloseCurrentFile\n",err);
392 }
393 }
394 else
395 unzCloseCurrentFile(uf); /* don't lose the error */
396 }
397
398 free(buf);
399 return err;
400 }
401
402
do_extract(uf,opt_extract_without_path,opt_overwrite,password)403 int do_extract(uf,opt_extract_without_path,opt_overwrite,password)
404 unzFile uf;
405 int opt_extract_without_path;
406 int opt_overwrite;
407 const char* password;
408 {
409 uLong i;
410 unz_global_info gi;
411 int err;
412 FILE* fout=NULL;
413
414 err = unzGetGlobalInfo (uf,&gi);
415 if (err!=UNZ_OK)
416 printf("error %d with zipfile in unzGetGlobalInfo\n",err);
417
418 for (i=0;i<gi.number_entry;i++)
419 {
420 if (do_extract_currentfile(uf,&opt_extract_without_path,
421 &opt_overwrite,
422 password) != UNZ_OK)
423 break;
424
425 if ((i+1)<gi.number_entry)
426 {
427 err = unzGoToNextFile(uf);
428 if (err!=UNZ_OK)
429 {
430 printf("error %d with zipfile in unzGoToNextFile\n",err);
431 break;
432 }
433 }
434 }
435 return 0;
436 }
437
do_extract_onefile(uf,filename,opt_extract_without_path,opt_overwrite,password)438 int do_extract_onefile(uf,filename,opt_extract_without_path,opt_overwrite,password)
439 unzFile uf;
440 const char* filename;
441 int opt_extract_without_path;
442 int opt_overwrite;
443 const char* password;
444 {
445 int err = UNZ_OK;
446 if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK)
447 {
448 printf("file %s not found in the zipfile\n",filename);
449 return 2;
450 }
451
452 if (do_extract_currentfile(uf,&opt_extract_without_path,
453 &opt_overwrite,
454 password) == UNZ_OK)
455 return 0;
456 else
457 return 1;
458 }
459
460
main(argc,argv)461 int main(argc,argv)
462 int argc;
463 char *argv[];
464 {
465 const char *zipfilename=NULL;
466 const char *filename_to_extract=NULL;
467 const char *password=NULL;
468 char filename_try[MAXFILENAME+16] = "";
469 int i;
470 int opt_do_list=0;
471 int opt_do_extract=1;
472 int opt_do_extract_withoutpath=0;
473 int opt_overwrite=0;
474 int opt_extractdir=0;
475 const char *dirname=NULL;
476 unzFile uf=NULL;
477
478 do_banner();
479 if (argc==1)
480 {
481 do_help();
482 return 0;
483 }
484 else
485 {
486 for (i=1;i<argc;i++)
487 {
488 if ((*argv[i])=='-')
489 {
490 const char *p=argv[i]+1;
491
492 while ((*p)!='\0')
493 {
494 char c=*(p++);;
495 if ((c=='l') || (c=='L'))
496 opt_do_list = 1;
497 if ((c=='v') || (c=='V'))
498 opt_do_list = 1;
499 if ((c=='x') || (c=='X'))
500 opt_do_extract = 1;
501 if ((c=='e') || (c=='E'))
502 opt_do_extract = opt_do_extract_withoutpath = 1;
503 if ((c=='o') || (c=='O'))
504 opt_overwrite=1;
505 if ((c=='d') || (c=='D'))
506 {
507 opt_extractdir=1;
508 dirname=argv[i+1];
509 }
510
511 if (((c=='p') || (c=='P')) && (i+1<argc))
512 {
513 password=argv[i+1];
514 i++;
515 }
516 }
517 }
518 else
519 {
520 if (zipfilename == NULL)
521 zipfilename = argv[i];
522 else if ((filename_to_extract==NULL) && (!opt_extractdir))
523 filename_to_extract = argv[i] ;
524 }
525 }
526 }
527
528 if (zipfilename!=NULL)
529 {
530 # ifdef USEWIN32IOAPI
531 zlib_filefunc_def ffunc;
532 # endif
533
534 strncpy(filename_try, zipfilename,MAXFILENAME-1);
535 /* strncpy doesnt append the trailing NULL, of the string is too long. */
536 filename_try[ MAXFILENAME ] = '\0';
537
538 # ifdef USEWIN32IOAPI
539 fill_win32_filefunc(&ffunc);
540 uf = unzOpen2(zipfilename,&ffunc);
541 # else
542 uf = unzOpen(zipfilename);
543 # endif
544 if (uf==NULL)
545 {
546 strcat(filename_try,".zip");
547 # ifdef USEWIN32IOAPI
548 uf = unzOpen2(filename_try,&ffunc);
549 # else
550 uf = unzOpen(filename_try);
551 # endif
552 }
553 }
554
555 if (uf==NULL)
556 {
557 printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
558 return 1;
559 }
560 printf("%s opened\n",filename_try);
561
562 if (opt_do_list==1)
563 return do_list(uf);
564 else if (opt_do_extract==1)
565 {
566 if (opt_extractdir && chdir(dirname))
567 {
568 printf("Error changing into %s, aborting\n", dirname);
569 exit(-1);
570 }
571
572 if (filename_to_extract == NULL)
573 return do_extract(uf,opt_do_extract_withoutpath,opt_overwrite,password);
574 else
575 return do_extract_onefile(uf,filename_to_extract,
576 opt_do_extract_withoutpath,opt_overwrite,password);
577 }
578 unzCloseCurrentFile(uf);
579
580 return 0;
581 }
582