bin/unzip/crypt.c

81 #  ifdef GLOBAL         /* used in Amiga system headers, maybe others too */
82 #    undef GLOBAL
84 #  define GLOBAL(g) g
86 #  define GLOBAL(g) G.g
126     temp = ((unsigned)GLOBAL(keys[2]) & 0xffff) | 2;
137     GLOBAL(keys[0]) = CRC32(GLOBAL(keys[0]), c);
138     GLOBAL(keys[1]) += GLOBAL(keys[0]) & 0xff;
139     GLOBAL(keys[1]) = GLOBAL(keys[1]) * 134775813L + 1;
141       register int keyshift = (int)(GLOBAL(keys[1]) >> 24);
142       GLOBAL(keys[2]) = CRC32(GLOBAL(keys[2]), keyshift);
156     GLOBAL(keys[0]) = 305419896L;
157     GLOBAL(keys[1]) = 591751049L;
158     GLOBAL(keys[2]) = 878082192L;
391     Trace((stdout, "\n[incnt = %d]: ", GLOBAL(incnt)));
395     GLOBAL(pInfo->encrypted) = FALSE;
403     GLOBAL(pInfo->encrypted) = TRUE;
405     if (GLOBAL(newzip)) { /* this is first encrypted member in this zipfile */
406         GLOBAL(newzip) = FALSE;
408             if (!GLOBAL(key)) {
409                 if ((GLOBAL(key) = (char *)malloc(strlen(passwrd)+1)) ==
412                 strcpy(GLOBAL(key), passwrd);
413                 GLOBAL(nopwd) = TRUE;  /* inhibit password prompting! */
415         } else if (GLOBAL(key)) { /* get rid of previous zipfile's key */
416             free(GLOBAL(key));
417             GLOBAL(key) = (char *)NULL;
422     if (GLOBAL(key)) {
425         else if (GLOBAL(nopwd))
427     } else if ((GLOBAL(key) = (char *)malloc(IZ_PWLEN+1)) == (char *)NULL)
433         r = (*G.decr_passwd)((zvoid *)&G, &n, GLOBAL(key), IZ_PWLEN+1,
434                              GLOBAL(zipfn), GLOBAL(filename));
436             free (GLOBAL(key));
437             GLOBAL(key) = NULL;
441             *GLOBAL(key) = '\0';        /*   We try the NIL password, ... */
447             GLOBAL(nopwd) = TRUE;       /*   inhibit any further PW prompt! */
472     if ((key_translated = malloc(strlen(GLOBAL(key)) + 1)) == (char *)NULL)
475     r = testkey(__G__ h, STR_TO_CP1(key_translated, GLOBAL(key)));
478     r = testkey(__G__ h, GLOBAL(key));
485         if ((key_translated = malloc(strlen(GLOBAL(key)) + 1)) == (char *)NULL)
489         r = testkey(__G__ h, STR_TO_CP2(key_translated, GLOBAL(key)));
493             r = testkey(__G__ h, STR_TO_CP3(key_translated, GLOBAL(key)));
505         r = testkey(__G__ h, GLOBAL(key));
539       GLOBAL(lrec.crc32), GLOBAL(pInfo->crc),
540       GLOBAL(pInfo->ExtLocHdr) ? "true":"false"));
542       GLOBAL(incnt),
543       GLOBAL(cur_zipfile_bufstart)+(GLOBAL(inptr)-GLOBAL(inbuf))));
551       (ush)(c | (b<<8)), (ush)(GLOBAL(lrec.crc32) >> 16),
552       ((ush)GLOBAL(lrec.last_mod_dos_datetime) & 0xffff))));
553     if ((ush)(c | (b<<8)) != (GLOBAL(pInfo->ExtLocHdr) ?
554                            ((ush)GLOBAL(lrec.last_mod_dos_datetime) & 0xffff) :
555                            (ush)(GLOBAL(lrec.crc32) >> 16)))
560       b, (ush)(GLOBAL(lrec.crc32) >> 24),
561       ((ush)GLOBAL(lrec.last_mod_dos_datetime) >> 8) & 0xff));
562     if (b != (GLOBAL(pInfo->ExtLocHdr) ?
563         ((ush)GLOBAL(lrec.last_mod_dos_datetime) >> 8) & 0xff :
564         (ush)(GLOBAL(lrec.crc32) >> 24)))
568     for (n = (long)GLOBAL(incnt) > GLOBAL(csize) ?
569              (int)GLOBAL(csize) : GLOBAL(incnt),
570          p = GLOBAL(inptr); n--; p++)