| 1 |
/* |
| 2 |
* untgz.c -- Display contents and extract files from a gzip'd TAR file |
| 3 |
* |
| 4 |
* written by Pedro A. Aranda Gutierrez <paag@tid.es> |
| 5 |
* adaptation to Unix by Jean-loup Gailly <jloup@gzip.org> |
| 6 |
* various fixes by Cosmin Truta <cosmint@cs.ubbcluj.ro> |
| 7 |
*/ |
| 8 |
|
| 9 |
#include <stdio.h> |
| 10 |
#include <stdlib.h> |
| 11 |
#include <string.h> |
| 12 |
#include <time.h> |
| 13 |
#include <errno.h> |
| 14 |
|
| 15 |
#include "zlib.h" |
| 16 |
|
| 17 |
#ifdef unix |
| 18 |
# include <unistd.h> |
| 19 |
#else |
| 20 |
# include <direct.h> |
| 21 |
# include <io.h> |
| 22 |
#endif |
| 23 |
|
| 24 |
#ifdef WIN32 |
| 25 |
#include <windows.h> |
| 26 |
# ifndef F_OK |
| 27 |
# define F_OK 0 |
| 28 |
# endif |
| 29 |
# define mkdir(dirname,mode) _mkdir(dirname) |
| 30 |
# ifdef _MSC_VER |
| 31 |
# define access(path,mode) _access(path,mode) |
| 32 |
# define chmod(path,mode) _chmod(path,mode) |
| 33 |
# define strdup(str) _strdup(str) |
| 34 |
# endif |
| 35 |
#else |
| 36 |
# include <utime.h> |
| 37 |
#endif |
| 38 |
|
| 39 |
|
| 40 |
/* values used in typeflag field */ |
| 41 |
|
| 42 |
#define REGTYPE '0' /* regular file */ |
| 43 |
#define AREGTYPE '\0' /* regular file */ |
| 44 |
#define LNKTYPE '1' /* link */ |
| 45 |
#define SYMTYPE '2' /* reserved */ |
| 46 |
#define CHRTYPE '3' /* character special */ |
| 47 |
#define BLKTYPE '4' /* block special */ |
| 48 |
#define DIRTYPE '5' /* directory */ |
| 49 |
#define FIFOTYPE '6' /* FIFO special */ |
| 50 |
#define CONTTYPE '7' /* reserved */ |
| 51 |
|
| 52 |
/* GNU tar extensions */ |
| 53 |
|
| 54 |
#define GNUTYPE_DUMPDIR 'D' /* file names from dumped directory */ |
| 55 |
#define GNUTYPE_LONGLINK 'K' /* long link name */ |
| 56 |
#define GNUTYPE_LONGNAME 'L' /* long file name */ |
| 57 |
#define GNUTYPE_MULTIVOL 'M' /* continuation of file from another volume */ |
| 58 |
#define GNUTYPE_NAMES 'N' /* file name that does not fit into main hdr */ |
| 59 |
#define GNUTYPE_SPARSE 'S' /* sparse file */ |
| 60 |
#define GNUTYPE_VOLHDR 'V' /* tape/volume header */ |
| 61 |
|
| 62 |
|
| 63 |
/* tar header */ |
| 64 |
|
| 65 |
#define BLOCKSIZE 512 |
| 66 |
#define SHORTNAMESIZE 100 |
| 67 |
|
| 68 |
struct tar_header |
| 69 |
{ /* byte offset */ |
| 70 |
char name[100]; /* 0 */ |
| 71 |
char mode[8]; /* 100 */ |
| 72 |
char uid[8]; /* 108 */ |
| 73 |
char gid[8]; /* 116 */ |
| 74 |
char size[12]; /* 124 */ |
| 75 |
char mtime[12]; /* 136 */ |
| 76 |
char chksum[8]; /* 148 */ |
| 77 |
char typeflag; /* 156 */ |
| 78 |
char linkname[100]; /* 157 */ |
| 79 |
char magic[6]; /* 257 */ |
| 80 |
char version[2]; /* 263 */ |
| 81 |
char uname[32]; /* 265 */ |
| 82 |
char gname[32]; /* 297 */ |
| 83 |
char devmajor[8]; /* 329 */ |
| 84 |
char devminor[8]; /* 337 */ |
| 85 |
char prefix[155]; /* 345 */ |
| 86 |
/* 500 */ |
| 87 |
}; |
| 88 |
|
| 89 |
union tar_buffer |
| 90 |
{ |
| 91 |
char buffer[BLOCKSIZE]; |
| 92 |
struct tar_header header; |
| 93 |
}; |
| 94 |
|
| 95 |
struct attr_item |
| 96 |
{ |
| 97 |
struct attr_item *next; |
| 98 |
char *fname; |
| 99 |
int mode; |
| 100 |
time_t time; |
| 101 |
}; |
| 102 |
|
| 103 |
enum { TGZ_EXTRACT, TGZ_LIST, TGZ_INVALID }; |
| 104 |
|
| 105 |
char *TGZfname OF((const char *)); |
| 106 |
void TGZnotfound OF((const char *)); |
| 107 |
|
| 108 |
int getoct OF((char *, int)); |
| 109 |
char *strtime OF((time_t *)); |
| 110 |
int setfiletime OF((char *, time_t)); |
| 111 |
void push_attr OF((struct attr_item **, char *, int, time_t)); |
| 112 |
void restore_attr OF((struct attr_item **)); |
| 113 |
|
| 114 |
int ExprMatch OF((char *, char *)); |
| 115 |
|
| 116 |
int makedir OF((char *)); |
| 117 |
int matchname OF((int, int, char **, char *)); |
| 118 |
|
| 119 |
void error OF((const char *)); |
| 120 |
int tar OF((gzFile, int, int, int, char **)); |
| 121 |
|
| 122 |
void help OF((int)); |
| 123 |
int main OF((int, char **)); |
| 124 |
|
| 125 |
char *prog; |
| 126 |
|
| 127 |
const char *TGZsuffix[] = { "\0", ".tar", ".tar.gz", ".taz", ".tgz", NULL }; |
| 128 |
|
| 129 |
/* return the file name of the TGZ archive */ |
| 130 |
/* or NULL if it does not exist */ |
| 131 |
|
| 132 |
char *TGZfname (const char *arcname) |
| 133 |
{ |
| 134 |
static char buffer[1024]; |
| 135 |
int origlen,i; |
| 136 |
|
| 137 |
strcpy(buffer,arcname); |
| 138 |
origlen = strlen(buffer); |
| 139 |
|
| 140 |
for (i=0; TGZsuffix[i]; i++) |
| 141 |
{ |
| 142 |
strcpy(buffer+origlen,TGZsuffix[i]); |
| 143 |
if (access(buffer,F_OK) == 0) |
| 144 |
return buffer; |
| 145 |
} |
| 146 |
return NULL; |
| 147 |
} |
| 148 |
|
| 149 |
|
| 150 |
/* error message for the filename */ |
| 151 |
|
| 152 |
void TGZnotfound (const char *arcname) |
| 153 |
{ |
| 154 |
int i; |
| 155 |
|
| 156 |
fprintf(stderr,"%s: Couldn't find ",prog); |
| 157 |
for (i=0;TGZsuffix[i];i++) |
| 158 |
fprintf(stderr,(TGZsuffix[i+1]) ? "%s%s, " : "or %s%s\n", |
| 159 |
arcname, |
| 160 |
TGZsuffix[i]); |
| 161 |
exit(1); |
| 162 |
} |
| 163 |
|
| 164 |
|
| 165 |
/* convert octal digits to int */ |
| 166 |
/* on error return -1 */ |
| 167 |
|
| 168 |
int getoct (char *p,int width) |
| 169 |
{ |
| 170 |
int result = 0; |
| 171 |
char c; |
| 172 |
|
| 173 |
while (width--) |
| 174 |
{ |
| 175 |
c = *p++; |
| 176 |
if (c == 0) |
| 177 |
break; |
| 178 |
if (c == ' ') |
| 179 |
continue; |
| 180 |
if (c < '0' || c > '7') |
| 181 |
return -1; |
| 182 |
result = result * 8 + (c - '0'); |
| 183 |
} |
| 184 |
return result; |
| 185 |
} |
| 186 |
|
| 187 |
|
| 188 |
/* convert time_t to string */ |
| 189 |
/* use the "YYYY/MM/DD hh:mm:ss" format */ |
| 190 |
|
| 191 |
char *strtime (time_t *t) |
| 192 |
{ |
| 193 |
struct tm *local; |
| 194 |
static char result[32]; |
| 195 |
|
| 196 |
local = localtime(t); |
| 197 |
sprintf(result,"%4d/%02d/%02d %02d:%02d:%02d", |
| 198 |
local->tm_year+1900, local->tm_mon+1, local->tm_mday, |
| 199 |
local->tm_hour, local->tm_min, local->tm_sec); |
| 200 |
return result; |
| 201 |
} |
| 202 |
|
| 203 |
|
| 204 |
/* set file time */ |
| 205 |
|
| 206 |
int setfiletime (char *fname,time_t ftime) |
| 207 |
{ |
| 208 |
#ifdef WIN32 |
| 209 |
static int isWinNT = -1; |
| 210 |
SYSTEMTIME st; |
| 211 |
FILETIME locft, modft; |
| 212 |
struct tm *loctm; |
| 213 |
HANDLE hFile; |
| 214 |
int result; |
| 215 |
|
| 216 |
loctm = localtime(&ftime); |
| 217 |
if (loctm == NULL) |
| 218 |
return -1; |
| 219 |
|
| 220 |
st.wYear = (WORD)loctm->tm_year + 1900; |
| 221 |
st.wMonth = (WORD)loctm->tm_mon + 1; |
| 222 |
st.wDayOfWeek = (WORD)loctm->tm_wday; |
| 223 |
st.wDay = (WORD)loctm->tm_mday; |
| 224 |
st.wHour = (WORD)loctm->tm_hour; |
| 225 |
st.wMinute = (WORD)loctm->tm_min; |
| 226 |
st.wSecond = (WORD)loctm->tm_sec; |
| 227 |
st.wMilliseconds = 0; |
| 228 |
if (!SystemTimeToFileTime(&st, &locft) || |
| 229 |
!LocalFileTimeToFileTime(&locft, &modft)) |
| 230 |
return -1; |
| 231 |
|
| 232 |
if (isWinNT < 0) |
| 233 |
isWinNT = (GetVersion() < 0x80000000) ? 1 : 0; |
| 234 |
hFile = CreateFile(fname, GENERIC_WRITE, 0, NULL, OPEN_EXISTING, |
| 235 |
(isWinNT ? FILE_FLAG_BACKUP_SEMANTICS : 0), |
| 236 |
NULL); |
| 237 |
if (hFile == INVALID_HANDLE_VALUE) |
| 238 |
return -1; |
| 239 |
result = SetFileTime(hFile, NULL, NULL, &modft) ? 0 : -1; |
| 240 |
CloseHandle(hFile); |
| 241 |
return result; |
| 242 |
#else |
| 243 |
struct utimbuf settime; |
| 244 |
|
| 245 |
settime.actime = settime.modtime = ftime; |
| 246 |
return utime(fname,&settime); |
| 247 |
#endif |
| 248 |
} |
| 249 |
|
| 250 |
|
| 251 |
/* push file attributes */ |
| 252 |
|
| 253 |
void push_attr(struct attr_item **list,char *fname,int mode,time_t time) |
| 254 |
{ |
| 255 |
struct attr_item *item; |
| 256 |
|
| 257 |
item = (struct attr_item *)malloc(sizeof(struct attr_item)); |
| 258 |
if (item == NULL) |
| 259 |
error("Out of memory"); |
| 260 |
item->fname = strdup(fname); |
| 261 |
item->mode = mode; |
| 262 |
item->time = time; |
| 263 |
item->next = *list; |
| 264 |
*list = item; |
| 265 |
} |
| 266 |
|
| 267 |
|
| 268 |
/* restore file attributes */ |
| 269 |
|
| 270 |
void restore_attr(struct attr_item **list) |
| 271 |
{ |
| 272 |
struct attr_item *item, *prev; |
| 273 |
|
| 274 |
for (item = *list; item != NULL; ) |
| 275 |
{ |
| 276 |
setfiletime(item->fname,item->time); |
| 277 |
chmod(item->fname,item->mode); |
| 278 |
prev = item; |
| 279 |
item = item->next; |
| 280 |
free(prev); |
| 281 |
} |
| 282 |
*list = NULL; |
| 283 |
} |
| 284 |
|
| 285 |
|
| 286 |
/* match regular expression */ |
| 287 |
|
| 288 |
#define ISSPECIAL(c) (((c) == '*') || ((c) == '/')) |
| 289 |
|
| 290 |
int ExprMatch (char *string,char *expr) |
| 291 |
{ |
| 292 |
while (1) |
| 293 |
{ |
| 294 |
if (ISSPECIAL(*expr)) |
| 295 |
{ |
| 296 |
if (*expr == '/') |
| 297 |
{ |
| 298 |
if (*string != '\\' && *string != '/') |
| 299 |
return 0; |
| 300 |
string ++; expr++; |
| 301 |
} |
| 302 |
else if (*expr == '*') |
| 303 |
{ |
| 304 |
if (*expr ++ == 0) |
| 305 |
return 1; |
| 306 |
while (*++string != *expr) |
| 307 |
if (*string == 0) |
| 308 |
return 0; |
| 309 |
} |
| 310 |
} |
| 311 |
else |
| 312 |
{ |
| 313 |
if (*string != *expr) |
| 314 |
return 0; |
| 315 |
if (*expr++ == 0) |
| 316 |
return 1; |
| 317 |
string++; |
| 318 |
} |
| 319 |
} |
| 320 |
} |
| 321 |
|
| 322 |
|
| 323 |
/* recursive mkdir */ |
| 324 |
/* abort on ENOENT; ignore other errors like "directory already exists" */ |
| 325 |
/* return 1 if OK */ |
| 326 |
/* 0 on error */ |
| 327 |
|
| 328 |
int makedir (char *newdir) |
| 329 |
{ |
| 330 |
char *buffer = strdup(newdir); |
| 331 |
char *p; |
| 332 |
int len = strlen(buffer); |
| 333 |
|
| 334 |
if (len <= 0) { |
| 335 |
free(buffer); |
| 336 |
return 0; |
| 337 |
} |
| 338 |
if (buffer[len-1] == '/') { |
| 339 |
buffer[len-1] = '\0'; |
| 340 |
} |
| 341 |
if (mkdir(buffer, 0755) == 0) |
| 342 |
{ |
| 343 |
free(buffer); |
| 344 |
return 1; |
| 345 |
} |
| 346 |
|
| 347 |
p = buffer+1; |
| 348 |
while (1) |
| 349 |
{ |
| 350 |
char hold; |
| 351 |
|
| 352 |
while(*p && *p != '\\' && *p != '/') |
| 353 |
p++; |
| 354 |
hold = *p; |
| 355 |
*p = 0; |
| 356 |
if ((mkdir(buffer, 0755) == -1) && (errno == ENOENT)) |
| 357 |
{ |
| 358 |
fprintf(stderr,"%s: Couldn't create directory %s\n",prog,buffer); |
| 359 |
free(buffer); |
| 360 |
return 0; |
| 361 |
} |
| 362 |
if (hold == 0) |
| 363 |
break; |
| 364 |
*p++ = hold; |
| 365 |
} |
| 366 |
free(buffer); |
| 367 |
return 1; |
| 368 |
} |
| 369 |
|
| 370 |
|
| 371 |
int matchname (int arg,int argc,char **argv,char *fname) |
| 372 |
{ |
| 373 |
if (arg == argc) /* no arguments given (untgz tgzarchive) */ |
| 374 |
return 1; |
| 375 |
|
| 376 |
while (arg < argc) |
| 377 |
if (ExprMatch(fname,argv[arg++])) |
| 378 |
return 1; |
| 379 |
|
| 380 |
return 0; /* ignore this for the moment being */ |
| 381 |
} |
| 382 |
|
| 383 |
|
| 384 |
/* tar file list or extract */ |
| 385 |
|
| 386 |
int tar (gzFile in,int action,int arg,int argc,char **argv) |
| 387 |
{ |
| 388 |
union tar_buffer buffer; |
| 389 |
int len; |
| 390 |
int err; |
| 391 |
int getheader = 1; |
| 392 |
int remaining = 0; |
| 393 |
FILE *outfile = NULL; |
| 394 |
char fname[BLOCKSIZE]; |
| 395 |
int tarmode; |
| 396 |
time_t tartime; |
| 397 |
struct attr_item *attributes = NULL; |
| 398 |
|
| 399 |
if (action == TGZ_LIST) |
| 400 |
printf(" date time size file\n" |
| 401 |
" ---------- -------- --------- -------------------------------------\n"); |
| 402 |
while (1) |
| 403 |
{ |
| 404 |
len = gzread(in, &buffer, BLOCKSIZE); |
| 405 |
if (len < 0) |
| 406 |
error(gzerror(in, &err)); |
| 407 |
/* |
| 408 |
* Always expect complete blocks to process |
| 409 |
* the tar information. |
| 410 |
*/ |
| 411 |
if (len != BLOCKSIZE) |
| 412 |
{ |
| 413 |
action = TGZ_INVALID; /* force error exit */ |
| 414 |
remaining = 0; /* force I/O cleanup */ |
| 415 |
} |
| 416 |
|
| 417 |
/* |
| 418 |
* If we have to get a tar header |
| 419 |
*/ |
| 420 |
if (getheader >= 1) |
| 421 |
{ |
| 422 |
/* |
| 423 |
* if we met the end of the tar |
| 424 |
* or the end-of-tar block, |
| 425 |
* we are done |
| 426 |
*/ |
| 427 |
if (len == 0 || buffer.header.name[0] == 0) |
| 428 |
break; |
| 429 |
|
| 430 |
tarmode = getoct(buffer.header.mode,8); |
| 431 |
tartime = (time_t)getoct(buffer.header.mtime,12); |
| 432 |
if (tarmode == -1 || tartime == (time_t)-1) |
| 433 |
{ |
| 434 |
buffer.header.name[0] = 0; |
| 435 |
action = TGZ_INVALID; |
| 436 |
} |
| 437 |
|
| 438 |
if (getheader == 1) |
| 439 |
{ |
| 440 |
strncpy(fname,buffer.header.name,SHORTNAMESIZE); |
| 441 |
if (fname[SHORTNAMESIZE-1] != 0) |
| 442 |
fname[SHORTNAMESIZE] = 0; |
| 443 |
} |
| 444 |
else |
| 445 |
{ |
| 446 |
/* |
| 447 |
* The file name is longer than SHORTNAMESIZE |
| 448 |
*/ |
| 449 |
if (strncmp(fname,buffer.header.name,SHORTNAMESIZE-1) != 0) |
| 450 |
error("bad long name"); |
| 451 |
getheader = 1; |
| 452 |
} |
| 453 |
|
| 454 |
/* |
| 455 |
* Act according to the type flag |
| 456 |
*/ |
| 457 |
switch (buffer.header.typeflag) |
| 458 |
{ |
| 459 |
case DIRTYPE: |
| 460 |
if (action == TGZ_LIST) |
| 461 |
printf(" %s <dir> %s\n",strtime(&tartime),fname); |
| 462 |
if (action == TGZ_EXTRACT) |
| 463 |
{ |
| 464 |
makedir(fname); |
| 465 |
push_attr(&attributes,fname,tarmode,tartime); |
| 466 |
} |
| 467 |
break; |
| 468 |
case REGTYPE: |
| 469 |
case AREGTYPE: |
| 470 |
remaining = getoct(buffer.header.size,12); |
| 471 |
if (remaining == -1) |
| 472 |
{ |
| 473 |
action = TGZ_INVALID; |
| 474 |
break; |
| 475 |
} |
| 476 |
if (action == TGZ_LIST) |
| 477 |
printf(" %s %9d %s\n",strtime(&tartime),remaining,fname); |
| 478 |
else if (action == TGZ_EXTRACT) |
| 479 |
{ |
| 480 |
if (matchname(arg,argc,argv,fname)) |
| 481 |
{ |
| 482 |
outfile = fopen(fname,"wb"); |
| 483 |
if (outfile == NULL) { |
| 484 |
/* try creating directory */ |
| 485 |
char *p = strrchr(fname, '/'); |
| 486 |
if (p != NULL) { |
| 487 |
*p = '\0'; |
| 488 |
makedir(fname); |
| 489 |
*p = '/'; |
| 490 |
outfile = fopen(fname,"wb"); |
| 491 |
} |
| 492 |
} |
| 493 |
if (outfile != NULL) |
| 494 |
printf("Extracting %s\n",fname); |
| 495 |
else |
| 496 |
fprintf(stderr, "%s: Couldn't create %s",prog,fname); |
| 497 |
} |
| 498 |
else |
| 499 |
outfile = NULL; |
| 500 |
} |
| 501 |
getheader = 0; |
| 502 |
break; |
| 503 |
case GNUTYPE_LONGLINK: |
| 504 |
case GNUTYPE_LONGNAME: |
| 505 |
remaining = getoct(buffer.header.size,12); |
| 506 |
if (remaining < 0 || remaining >= BLOCKSIZE) |
| 507 |
{ |
| 508 |
action = TGZ_INVALID; |
| 509 |
break; |
| 510 |
} |
| 511 |
len = gzread(in, fname, BLOCKSIZE); |
| 512 |
if (len < 0) |
| 513 |
error(gzerror(in, &err)); |
| 514 |
if (fname[BLOCKSIZE-1] != 0 || (int)strlen(fname) > remaining) |
| 515 |
{ |
| 516 |
action = TGZ_INVALID; |
| 517 |
break; |
| 518 |
} |
| 519 |
getheader = 2; |
| 520 |
break; |
| 521 |
default: |
| 522 |
if (action == TGZ_LIST) |
| 523 |
printf(" %s <---> %s\n",strtime(&tartime),fname); |
| 524 |
break; |
| 525 |
} |
| 526 |
} |
| 527 |
else |
| 528 |
{ |
| 529 |
unsigned int bytes = (remaining > BLOCKSIZE) ? BLOCKSIZE : remaining; |
| 530 |
|
| 531 |
if (outfile != NULL) |
| 532 |
{ |
| 533 |
if (fwrite(&buffer,sizeof(char),bytes,outfile) != bytes) |
| 534 |
{ |
| 535 |
fprintf(stderr, |
| 536 |
"%s: Error writing %s -- skipping\n",prog,fname); |
| 537 |
fclose(outfile); |
| 538 |
outfile = NULL; |
| 539 |
remove(fname); |
| 540 |
} |
| 541 |
} |
| 542 |
remaining -= bytes; |
| 543 |
} |
| 544 |
|
| 545 |
if (remaining == 0) |
| 546 |
{ |
| 547 |
getheader = 1; |
| 548 |
if (outfile != NULL) |
| 549 |
{ |
| 550 |
fclose(outfile); |
| 551 |
outfile = NULL; |
| 552 |
if (action != TGZ_INVALID) |
| 553 |
push_attr(&attributes,fname,tarmode,tartime); |
| 554 |
} |
| 555 |
} |
| 556 |
|
| 557 |
/* |
| 558 |
* Abandon if errors are found |
| 559 |
*/ |
| 560 |
if (action == TGZ_INVALID) |
| 561 |
{ |
| 562 |
error("broken archive"); |
| 563 |
break; |
| 564 |
} |
| 565 |
} |
| 566 |
|
| 567 |
/* |
| 568 |
* Restore file modes and time stamps |
| 569 |
*/ |
| 570 |
restore_attr(&attributes); |
| 571 |
|
| 572 |
if (gzclose(in) != Z_OK) |
| 573 |
error("failed gzclose"); |
| 574 |
|
| 575 |
return 0; |
| 576 |
} |
| 577 |
|
| 578 |
|
| 579 |
/* ============================================================ */ |
| 580 |
|
| 581 |
void help(int exitval) |
| 582 |
{ |
| 583 |
printf("untgz version 0.2.1\n" |
| 584 |
" using zlib version %s\n\n", |
| 585 |
zlibVersion()); |
| 586 |
printf("Usage: untgz file.tgz extract all files\n" |
| 587 |
" untgz file.tgz fname ... extract selected files\n" |
| 588 |
" untgz -l file.tgz list archive contents\n" |
| 589 |
" untgz -h display this help\n"); |
| 590 |
exit(exitval); |
| 591 |
} |
| 592 |
|
| 593 |
void error(const char *msg) |
| 594 |
{ |
| 595 |
fprintf(stderr, "%s: %s\n", prog, msg); |
| 596 |
exit(1); |
| 597 |
} |
| 598 |
|
| 599 |
|
| 600 |
/* ============================================================ */ |
| 601 |
|
| 602 |
#if defined(WIN32) && defined(__GNUC__) |
| 603 |
int _CRT_glob = 0; /* disable argument globbing in MinGW */ |
| 604 |
#endif |
| 605 |
|
| 606 |
int main(int argc,char **argv) |
| 607 |
{ |
| 608 |
int action = TGZ_EXTRACT; |
| 609 |
int arg = 1; |
| 610 |
char *TGZfile; |
| 611 |
gzFile *f; |
| 612 |
|
| 613 |
prog = strrchr(argv[0],'\\'); |
| 614 |
if (prog == NULL) |
| 615 |
{ |
| 616 |
prog = strrchr(argv[0],'/'); |
| 617 |
if (prog == NULL) |
| 618 |
{ |
| 619 |
prog = strrchr(argv[0],':'); |
| 620 |
if (prog == NULL) |
| 621 |
prog = argv[0]; |
| 622 |
else |
| 623 |
prog++; |
| 624 |
} |
| 625 |
else |
| 626 |
prog++; |
| 627 |
} |
| 628 |
else |
| 629 |
prog++; |
| 630 |
|
| 631 |
if (argc == 1) |
| 632 |
help(0); |
| 633 |
|
| 634 |
if (strcmp(argv[arg],"-l") == 0) |
| 635 |
{ |
| 636 |
action = TGZ_LIST; |
| 637 |
if (argc == ++arg) |
| 638 |
help(0); |
| 639 |
} |
| 640 |
else if (strcmp(argv[arg],"-h") == 0) |
| 641 |
{ |
| 642 |
help(0); |
| 643 |
} |
| 644 |
|
| 645 |
if ((TGZfile = TGZfname(argv[arg])) == NULL) |
| 646 |
TGZnotfound(argv[arg]); |
| 647 |
|
| 648 |
++arg; |
| 649 |
if ((action == TGZ_LIST) && (arg != argc)) |
| 650 |
help(1); |
| 651 |
|
| 652 |
/* |
| 653 |
* Process the TGZ file |
| 654 |
*/ |
| 655 |
switch(action) |
| 656 |
{ |
| 657 |
case TGZ_LIST: |
| 658 |
case TGZ_EXTRACT: |
| 659 |
f = gzopen(TGZfile,"rb"); |
| 660 |
if (f == NULL) |
| 661 |
{ |
| 662 |
fprintf(stderr,"%s: Couldn't gzopen %s\n",prog,TGZfile); |
| 663 |
return 1; |
| 664 |
} |
| 665 |
exit(tar(f, action, arg, argc, argv)); |
| 666 |
break; |
| 667 |
|
| 668 |
default: |
| 669 |
error("Unknown option"); |
| 670 |
exit(1); |
| 671 |
} |
| 672 |
|
| 673 |
return 0; |
| 674 |
} |
