src/header.c

   1 /* ------------------------------------------------------------------------ */
   2 /* LHa for UNIX                                                                                                                         */
   3 /*                              header.c -- header manipulate functions                                         */
   4 /*                                                                                                                                                      */
   5 /*              Modified                        Nobutaka Watazaki                                                       */
   6 /*                                                                                                                                                      */
   7 /*      Original                                                                                                Y.Tagawa                */
   8 /*      modified                                                                        1991.12.16      M.Oki                   */
   9 /*      Ver. 1.10  Symbolic Link added                          1993.10.01      N.Watazaki              */
  10 /*      Ver. 1.13b Symbolic Link Bug Fix                        1994.08.22      N.Watazaki              */
  11 /*      Ver. 1.14  Source All chagned                           1995.01.14      N.Watazaki              */
  12 /*  Ver. 1.14i bug fixed                                                2000.10.06  t.okamoto       */
  13 /* ------------------------------------------------------------------------ */
  14 #include "lha.h"
  15
  16 #ifdef __APPLE__
  17 static int ConvertEncodingToUTF8(const char* inCStr, char* outUTF8Buffer, int outUTF8BufferLength, unsigned long scriptEncoding, unsigned long flags);
  18 static int ConvertUTF8ToEncoding(const char* inUTF8Buf, int inUTF8BufLength, char* outCStrBuffer, int outCStrBufferLength, unsigned long scriptEncoding, unsigned long flags);
  19 #endif /* __APPLE__ */
  20
  21 /* ------------------------------------------------------------------------ */
  22 static char    *get_ptr;
  23
  24 int optional_archive_kanji_code = NONE;
  25 int optional_system_kanji_code = NONE;
  26 char *optional_archive_delim = NULL;
  27 char *optional_system_delim = NULL;
  28 int optional_filename_case = NONE;
  29
  30 #ifdef MULTIBYTE_FILENAME
  31 int default_system_kanji_code = MULTIBYTE_FILENAME;
  32 #else
  33 int default_system_kanji_code = NONE;
  34 #endif
  35
  36 /* ------------------------------------------------------------------------ */
  37 int
  38 calc_sum(p, len)
  39         register char  *p;
  40         register int    len;
  41 {
  42         register int    sum;
  43
  44         for (sum = 0; len; len--)
  45                 sum += *p++;
  46
  47         return sum & 0xff;
  48 }
  49
  50 /* ------------------------------------------------------------------------ */
  51 static unsigned short
  52 get_word()
  53 {
  54         int             b0, b1;
  55
  56         b0 = get_byte();
  57         b1 = get_byte();
  58         return (b1 << 8) + b0;
  59 }
  60
  61 /* ------------------------------------------------------------------------ */
  62 static void
  63 put_word(v)
  64         unsigned int    v;
  65 {
  66         put_byte(v);
  67         put_byte(v >> 8);
  68 }
  69
  70 /* ------------------------------------------------------------------------ */
  71 static long
  72 get_longword()
  73 {
  74         long            b0, b1, b2, b3;
  75
  76         b0 = get_byte();
  77         b1 = get_byte();
  78         b2 = get_byte();
  79         b3 = get_byte();
  80         return (b3 << 24) + (b2 << 16) + (b1 << 8) + b0;
  81 }
  82
  83 /* ------------------------------------------------------------------------ */
  84 static void
  85 put_longword(v)
  86         long            v;
  87 {
  88         put_byte(v);
  89         put_byte(v >> 8);
  90         put_byte(v >> 16);
  91         put_byte(v >> 24);
  92 }
  93
  94 /* ------------------------------------------------------------------------ */
  95 static void
  96 msdos_to_unix_filename(name, len)
  97         register char  *name;
  98         register int    len;
  99 {
 100         register int    i;
 101
 102 #ifdef MULTIBYTE_FILENAME
 103         for (i = 0; i < len; i++) {
 104                 if (MULTIBYTE_FIRST_P(name[i]) &&
 105                     MULTIBYTE_SECOND_P(name[i + 1]))
 106                         i++;
 107                 else if (name[i] == '\\')
 108                         name[i] = '/';
 109                 else if (!noconvertcase && isupper(name[i]))
 110                         name[i] = tolower(name[i]);
 111         }
 112 #else
 113         for (i = 0; i < len; i++) {
 114                 if (name[i] == '\\')
 115                         name[i] = '/';
 116                 else if (!noconvertcase && isupper(name[i]))
 117                         name[i] = tolower(name[i]);
 118         }
 119 #endif
 120 }
 121
 122 /* ------------------------------------------------------------------------ */
 123 static void
 124 generic_to_unix_filename(name, len)
 125         register char  *name;
 126         register int    len;
 127 {
 128         register int    i;
 129         boolean         lower_case_used = FALSE;
 130
 131 #ifdef MULTIBYTE_FILENAME
 132         for (i = 0; i < len; i++) {
 133                 if (MULTIBYTE_FIRST_P(name[i]) &&
 134                     MULTIBYTE_SECOND_P(name[i + 1]))
 135                         i++;
 136                 else if (islower(name[i])) {
 137                         lower_case_used = TRUE;
 138                         break;
 139                 }
 140         }
 141         for (i = 0; i < len; i++) {
 142                 if (MULTIBYTE_FIRST_P(name[i]) &&
 143                     MULTIBYTE_SECOND_P(name[i + 1]))
 144                         i++;
 145                 else if (name[i] == '\\')
 146                         name[i] = '/';
 147                 else if (!noconvertcase && !lower_case_used && isupper(name[i]))
 148                         name[i] = tolower(name[i]);
 149         }
 150 #else
 151         for (i = 0; i < len; i++)
 152                 if (islower(name[i])) {
 153                         lower_case_used = TRUE;
 154                         break;
 155                 }
 156         for (i = 0; i < len; i++) {
 157                 if (name[i] == '\\')
 158                         name[i] = '/';
 159                 else if (!noconvertcase && !lower_case_used && isupper(name[i]))
 160                         name[i] = tolower(name[i]);
 161         }
 162 #endif
 163 }
 164
 165 /* ------------------------------------------------------------------------ */
 166 static void
 167 macos_to_unix_filename(name, len)
 168         register char  *name;
 169         register int    len;
 170 {
 171         register int    i;
 172
 173         for (i = 0; i < len; i++) {
 174                 if (name[i] == ':')
 175                         name[i] = '/';
 176                 else if (name[i] == '/')
 177                         name[i] = ':';
 178         }
 179 }
 180
 181 /* ------------------------------------------------------------------------ */
 182 static void
 183 unix_to_generic_filename(name, len)
 184         register char  *name;
 185         register int    len;
 186 {
 187         register int    i;
 188
 189         for (i = 0; i < len; i++) {
 190                 if (name[i] == '/')
 191                         name[i] = '\\';
 192                 else if (islower(name[i]))
 193                         name[i] = toupper(name[i]);
 194         }
 195 }
 196
 197 /* added by Koji Arai */
 198 static void
 199 convert_filename(name, len, size,
 200                  from_code, to_code,
 201                  from_delim, to_delim,
 202                  case_to)
 203         register char  *name;
 204         register int    len;
 205         register int    size;
 206     int from_code, to_code, case_to;
 207     char *from_delim, *to_delim;
 208
 209 {
 210         register int    i;
 211 #ifdef MULTIBYTE_FILENAME
 212     char tmp[256];              /* 256 is sizeof(LzHeader.name) */
 213
 214     if (from_code == CODE_SJIS && to_code == CODE_UTF8) {
 215         for (i = 0; i < len; i++)
 216             if (name[i] == '\xff')  name[i] = '/';
 217         sjis_to_utf8(tmp, name, sizeof(tmp));
 218         strncpy(name, tmp, size);
 219         name[size-1] = 0;
 220         len = strlen(name);
 221         for (i = 0; i < len; i++)
 222             if (name[i] == '/')  name[i] = '\xff';
 223     }
 224     else if (from_code == CODE_UTF8 && to_code == CODE_SJIS) {
 225         for (i = 0; i < len; i++)
 226             if (name[i] == '\xff')  name[i] = '/';
 227         utf8_to_sjis(tmp, name, sizeof(tmp));
 228         strncpy(name, tmp, size);
 229         name[size-1] = 0;
 230         len = strlen(name);
 231         for (i = 0; i < len; i++)
 232             if (name[i] == '/')  name[i] = '\xff';
 233     }
 234 #endif
 235
 236         for (i = 0; i < len; i ++) {
 237 #ifdef MULTIBYTE_FILENAME
 238         if (from_code == CODE_EUC &&
 239             (unsigned char)name[i] == 0x8e) {
 240             if (to_code != CODE_SJIS) {
 241                 i++;
 242                 continue;
 243             }
 244
 245             /* X0201 KANA */
 246             memmove(name + i, name + i + 1, len - i);
 247             len--;
 248             continue;
 249         }
 250         if (from_code == CODE_SJIS && X0201_KANA_P(name[i])) {
 251             if (to_code != CODE_EUC) {
 252                 continue;
 253             }
 254
 255             if (len == size - 1) /* check overflow */
 256                 len--;
 257             memmove(name+i+1, name+i, len-i);
 258             name[i] = 0x8e;
 259             i++;
 260             len++;
 261             continue;
 262         }
 263                 if (from_code == CODE_EUC && (name[i] & 0x80) && (name[i+1] & 0x80)) {
 264                         int c1, c2;
 265             if (to_code != CODE_SJIS) {
 266                 i++;
 267                 continue;
 268             }
 269
 270                         c1 = (unsigned char)name[i];
 271             c2 = (unsigned char)name[i+1];
 272                         euc2sjis(&c1, &c2);
 273                         name[i] = c1;
 274             name[i+1] = c2;
 275                         i++;
 276             continue;
 277                 }
 278         if (from_code == CODE_SJIS &&
 279             SJC_FIRST_P(name[i]) &&
 280             SJC_SECOND_P(name[i+1])) {
 281                         int c1, c2;
 282
 283             if (to_code != CODE_EUC) {
 284                 i++;
 285                 continue;
 286             }
 287
 288                         c1 = (unsigned char)name[i];
 289             c2 = (unsigned char)name[i+1];
 290                         sjis2euc(&c1, &c2);
 291                         name[i] = c1;
 292             name[i+1] = c2;
 293                         i++;
 294             continue;
 295         }
 296 #endif /* MULTIBYTE_FILENAME */
 297         {
 298             char *ptr;
 299
 300             /* transpose from_delim to to_delim */
 301
 302             if ((ptr = strchr(from_delim, name[i])) != NULL) {
 303                 name[i] = to_delim[ptr - from_delim];
 304                 continue;
 305             }
 306         }
 307
 308                 if (case_to == TO_UPPER && islower(name[i])) {
 309                         name[i] = toupper(name[i]);
 310             continue;
 311         }
 312         if (case_to == TO_LOWER && isupper(name[i])) {
 313                         name[i] = tolower(name[i]);
 314             continue;
 315         }
 316         }
 317 }
 318
 319 /* ------------------------------------------------------------------------ */
 320 /*                                                                                                                                                      */
 321 /* Generic stamp format:                                                                                                        */
 322 /*                                                                                                                                                      */
 323 /* 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16                                                      */
 324 /* |<-------- year ------->|<- month ->|<-- day -->|                                            */
 325 /*                                                                                                                                                      */
 326 /* 15 14 13 12 11 10  9  8  7  6  5  4  3  2  1  0                                                      */
 327 /* |<--- hour --->|<---- minute --->|<- second*2 ->|                                            */
 328 /*                                                                                                                                                      */
 329 /* ------------------------------------------------------------------------ */
 330
 331 /*
 332  * NOTE : If you don't have `gettimeofday(2)', or your gettimeofday(2)
 333  * returns bogus timezone information, try FTIME, MKTIME, TIMELOCAL or TZSET.
 334  */
 335
 336 /* choose one */
 337 #if defined(HAVE_MKTIME)
 338 #ifdef HAVE_TIMELOCAL
 339 #undef HAVE_TIMELOCAL
 340 #endif
 341 #endif                          /* defined(HAVE_MKTIME) */
 342
 343 #if defined(HAVE_MKTIME) || defined(HAVE_TIMELOCAL)
 344 #ifdef HAVE_TZSET
 345 #undef HAVE_TZSET
 346 #endif
 347 #endif                          /* defined(HAVE_MKTIME) || defined(HAVE_TIMELOCAL) */
 348
 349 #if defined(HAVE_MKTIME) || defined(HAVE_TIMELOCAL) || defined(HAVE_TZSET)
 350 #ifdef HAVE_FTIME
 351 #undef HAVE_FTIME
 352 #endif
 353 #endif
 354
 355 #if defined(HAVE_MKTIME) || defined(HAVE_TIMELOCAL) || defined(HAVE_TZSET) || defined(HAVE_FTIME)
 356 #ifdef HAVE_GETTIMEOFDAY
 357 #undef HAVE_GETTIMEOFDAY
 358 #endif
 359 #else
 360 #ifndef HAVE_GETTIMEOFDAY
 361 #define HAVE_GETTIMEOFDAY               /* use gettimeofday() */
 362 #endif
 363 #endif
 364
 365 #ifdef HAVE_FTIME
 366 #include <sys/timeb.h>
 367 #endif
 368
 369 /*
 370  * You may define as : #define TIMEZONE_HOOK            \ extern long
 371  * timezone ;   \ extern void tzset();
 372  */
 373 #ifdef TIMEZONE_HOOK
 374 TIMEZONE_HOOK
 375 /* Which do you like better, `TIMEZONE_HOOK' or `TIMEZONE_HOOK;' ? */
 376 #endif
 377
 378 #if defined(HAVE_TZSET) && defined(_MINIX)
 379 extern long     timezone;               /* not defined in time.h */
 380 #endif
 381
 382 /* ------------------------------------------------------------------------ */
 383 #if defined(HAVE_FTIME) || defined(HAVE_GETTIMEOFDAY) || defined(HAVE_TZSET)
 384 static long
 385 gettz()
 386 #ifdef HAVE_TZSET
 387 {
 388         tzset();
 389         return timezone;
 390 }
 391 #endif
 392
 393 /* ------------------------------------------------------------------------ */
 394 #if !defined(HAVE_TZSET) && defined(HAVE_FTIME)
 395 {
 396         struct timeb    buf;
 397
 398         ftime(&buf);
 399         return buf.timezone * 60L;
 400 }
 401 #endif
 402
 403 /* ------------------------------------------------------------------------ */
 404 #if !defined(HAVE_TZSET) && !defined(HAVE_FTIME)        /* maybe defined(HAVE_GETTIMEOFDAY) */
 405 {
 406 #ifdef HAVE_STRUCT_TM_TM_GMTOFF
 407         time_t tt;
 408
 409         time(&tt);
 410         return -localtime(&tt)->tm_gmtoff;
 411 #else /* HAVE_STRUCT_TM_TM_GMTOFF */
 412         struct timeval  tp;
 413         struct timezone tzp;
 414         gettimeofday(&tp, &tzp);/* specific to 4.3BSD */
 415         /*
 416          * return (tzp.tz_minuteswest * 60L + (tzp.tz_dsttime != 0 ? 60L *
 417          * 60L : 0));
 418          */
 419         return (tzp.tz_minuteswest * 60L);
 420 #endif /* HAVE_STRUCT_TM_TM_GMTOFF */
 421 }
 422 #endif
 423 #endif                          /* defined(HAVE_FTIME) || defined(HAVE_GETTIMEOFDAY) ||
 424                                  * defined(HAVE_TZSET) */
 425
 426 /* ------------------------------------------------------------------------ */
 427 #ifdef NOT_USED
 428 static struct tm *
 429 msdos_to_unix_stamp_tm(a)
 430         long            a;
 431 {
 432         static struct tm t;
 433
 434         t.tm_sec = (a & 0x1f) * 2;
 435         t.tm_min = (a >> 5) & 0x3f;
 436         t.tm_hour = (a >> 11) & 0x1f;
 437         t.tm_mday = (a >> 16) & 0x1f;
 438         t.tm_mon = ((a >> 16 + 5) & 0x0f) - 1;
 439         t.tm_year = ((a >> 16 + 9) & 0x7f) + 80;
 440         return &t;
 441 }
 442 #endif
 443
 444 /* ------------------------------------------------------------------------ */
 445 static          time_t
 446 generic_to_unix_stamp(t)
 447         long            t;
 448 #if defined(HAVE_MKTIME) || defined(HAVE_TIMELOCAL)
 449 {
 450         struct tm       dostm;
 451
 452         /*
 453          * special case:  if MSDOS format date and time were zero, then we
 454          * set time to be zero here too.
 455          */
 456         if (t == 0)
 457                 return (time_t) 0;
 458
 459         dostm.tm_sec = (t & 0x1f) * 2;
 460         dostm.tm_min = t >> 5 & 0x3f;
 461         dostm.tm_hour = t >> 11 & 0x1f;
 462         dostm.tm_mday = t >> 16 & 0x1f;
 463         dostm.tm_mon = (t >> 16 + 5 & 0x0f) - 1;        /* 0..11 */
 464         dostm.tm_year = (t >> 16 + 9 & 0x7f) + 80;
 465 #if 0
 466         dostm.tm_isdst = 0;     /* correct? */
 467 #endif
 468         dostm.tm_isdst = -1;    /* correct? */
 469 #ifdef HAVE_MKTIME
 470         return (time_t) mktime(&dostm);
 471 #else                           /* maybe defined(HAVE_TIMELOCAL) */
 472         return (time_t) timelocal(&dostm);
 473 #endif
 474 }
 475
 476 #else                           /* defined(HAVE_MKTIME) || defined(HAVE_TIMELOCAL) */
 477 {
 478         int             year, month, day, hour, min, sec;
 479         long            longtime;
 480         static unsigned int dsboy[12] = {0, 31, 59, 90, 120, 151,
 481         181, 212, 243, 273, 304, 334};
 482         unsigned int    days;
 483
 484         /*
 485          * special case:  if MSDOS format date and time were zero, then we
 486          * set time to be zero here too.
 487          */
 488         if (t == 0)
 489                 return (time_t) 0;
 490
 491         year = ((int) (t >> 16 + 9) & 0x7f) + 1980;
 492         month = (int) (t >> 16 + 5) & 0x0f;     /* 1..12 means Jan..Dec */
 493         day = (int) (t >> 16) & 0x1f;   /* 1..31 means 1st,...31st */
 494
 495         hour = ((int) t >> 11) & 0x1f;
 496         min = ((int) t >> 5) & 0x3f;
 497         sec = ((int) t & 0x1f) * 2;
 498
 499         /* Calculate days since 1970.01.01 */
 500         days = (365 * (year - 1970) +   /* days due to whole years */
 501                 (year - 1970 + 1) / 4 + /* days due to leap years */
 502                 dsboy[month - 1] +      /* days since beginning of this year */
 503                 day - 1);       /* days since beginning of month */
 504
 505         if ((year % 4 == 0) &&
 506                 (year % 100 != 0 || year % 400 == 0) &&         /* 1999.5.24 t.oka */
 507             (month >= 3))       /* if this is a leap year and month */
 508                 days++;         /* is March or later, add a day */
 509
 510         /* Knowing the days, we can find seconds */
 511         longtime = (((days * 24) + hour) * 60 + min) * 60 + sec;
 512         longtime += gettz();    /* adjust for timezone */
 513
 514         /* LONGTIME is now the time in seconds, since 1970/01/01 00:00:00.  */
 515         return (time_t) longtime;
 516 }
 517 #endif                          /* defined(HAVE_MKTIME) || defined(HAVE_TIMELOCAL) */
 518
 519 /* ------------------------------------------------------------------------ */
 520 static long
 521 unix_to_generic_stamp(t)
 522         time_t          t;
 523 {
 524         struct tm      *tm = localtime(&t);
 525
 526         return ((((long) (tm->tm_year - 80)) << 25) +
 527                 (((long) (tm->tm_mon + 1)) << 21) +
 528                 (((long) tm->tm_mday) << 16) +
 529                 (long) ((tm->tm_hour << 11) +
 530                         (tm->tm_min << 5) +
 531                         (tm->tm_sec / 2)));
 532 }
 533
 534 /* ------------------------------------------------------------------------ */
 535 /* build header functions                                                                                                       */
 536 /* ------------------------------------------------------------------------ */
 537 boolean
 538 get_header(fp, hdr)
 539         FILE           *fp;
 540         register LzHeader *hdr;
 541 {
 542         int             header_size;
 543         int             name_length;
 544         char            data[LZHEADER_STRAGE];
 545         char            dirname[FILENAME_LENGTH];
 546         int             dir_length = 0;
 547         int             checksum;
 548         int             i;
 549         char           *ptr;
 550         int                             extend_size;
 551         int                             dmy;
 552
 553     int archive_kanji_code = CODE_SJIS;
 554     int system_kanji_code = default_system_kanji_code;
 555     char *archive_delim = "";
 556     char *system_delim = "";
 557     int filename_case = NONE;
 558
 559         memset(hdr, 0, sizeof(LzHeader));
 560
 561         if (((header_size = getc(fp)) == EOF) || (header_size == 0)) {
 562                 return FALSE;   /* finish */
 563         }
 564
 565         if (fread(data + I_HEADER_CHECKSUM,
 566                   sizeof(char), header_size - 1, fp) < header_size - 1) {
 567                 fatal_error("Invalid header (LHarc file ?)");
 568                 return FALSE;   /* finish */
 569         }
 570         setup_get(data + I_HEADER_LEVEL);
 571         hdr->header_level = get_byte();
 572         if (hdr->header_level != 2 &&
 573             fread(data + header_size, sizeof(char), 2, fp) < 2) {
 574                 fatal_error("Invalid header (LHarc file ?)");
 575                 return FALSE;   /* finish */
 576         }
 577
 578         if (hdr->header_level >= 3) {
 579                 fatal_error("Unknown level header (level %d)", hdr->header_level);
 580                 return FALSE;
 581         }
 582
 583         setup_get(data + I_HEADER_CHECKSUM);
 584         checksum = get_byte();
 585
 586         if (hdr->header_level == 2) {
 587                 hdr->header_size = header_size + checksum*256;
 588         } else {
 589                 hdr->header_size = header_size;
 590         }
 591         memcpy(hdr->method, data + I_METHOD, METHOD_TYPE_STRAGE);
 592         setup_get(data + I_PACKED_SIZE);
 593         hdr->packed_size = get_longword();
 594         hdr->original_size = get_longword();
 595         hdr->last_modified_stamp = get_longword();
 596         hdr->attribute = get_byte();
 597
 598         if ((hdr->header_level = get_byte()) != 2) {
 599                 if (calc_sum(data + I_METHOD, header_size) != checksum)
 600                         warning("Checksum error (LHarc file?)");
 601                 name_length = get_byte();
 602                 for (i = 0; i < name_length; i++)
 603                         hdr->name[i] = (char) get_byte();
 604                 hdr->name[name_length] = '\0';
 605         }
 606         else {
 607                 hdr->unix_last_modified_stamp = hdr->last_modified_stamp;
 608                 name_length = 0;
 609         }
 610
 611         /* defaults for other type */
 612         hdr->unix_mode = UNIX_FILE_REGULAR | UNIX_RW_RW_RW;
 613         hdr->unix_gid = 0;
 614         hdr->unix_uid = 0;
 615
 616         if (hdr->header_level == 0) {
 617                 extend_size = header_size - name_length -22;
 618                 if (extend_size < 0) {
 619                         if (extend_size == -2) {
 620                                 hdr->extend_type = EXTEND_GENERIC;
 621                                 hdr->has_crc = FALSE;
 622                         } else {
 623                                 error("Unkonwn header (lha file?)");
 624                 exit(1);
 625                         }
 626                 } else {
 627                         hdr->has_crc = TRUE;
 628                         hdr->crc = get_word();
 629                 }
 630
 631                 if (extend_size >= 1) {
 632                         hdr->extend_type = get_byte();
 633                         extend_size--;
 634                 }
 635                 if (hdr->extend_type == EXTEND_UNIX) {
 636                         if (extend_size >= 11) {
 637                                 hdr->minor_version = get_byte();
 638                                 hdr->unix_last_modified_stamp = (time_t) get_longword();
 639                                 hdr->unix_mode = get_word();
 640                                 hdr->unix_uid = get_word();
 641                                 hdr->unix_gid = get_word();
 642                                 extend_size -= 11;
 643                         } else {
 644                                 hdr->extend_type = EXTEND_GENERIC;
 645                         }
 646                 }
 647                 while (extend_size-- > 0)
 648                         dmy = get_byte();
 649                 if (hdr->extend_type == EXTEND_UNIX)
 650                         return TRUE;
 651         } else if (hdr->header_level == 1) {
 652                 hdr->has_crc = TRUE;
 653                 extend_size = header_size - name_length-25;
 654                 hdr->crc = get_word();
 655                 hdr->extend_type = get_byte();
 656                 while (extend_size-- > 0)
 657                         dmy = get_byte();
 658         } else { /* level 2 */
 659                 hdr->has_crc = TRUE;
 660                 hdr->crc = get_word();
 661                 hdr->extend_type = get_byte();
 662         }
 663
 664         if (hdr->header_level > 0) {
 665                 /* Extend Header */
 666                 if (hdr->header_level != 2)
 667                         setup_get(data + hdr->header_size);
 668                 ptr = get_ptr;
 669                 while ((header_size = get_word()) != 0) {
 670                         if (hdr->header_level != 2 &&
 671                         ((data + LZHEADER_STRAGE - get_ptr < header_size) ||
 672                          fread(get_ptr, sizeof(char), header_size, fp) < header_size)) {
 673                                 fatal_error("Invalid header (LHa file ?)");
 674                                 return FALSE;
 675                         }
 676                         switch (get_byte()) {
 677                         case 0:
 678                                 /*
 679                                  * header crc
 680                                  */
 681                                 setup_get(get_ptr + header_size - 3);
 682                                 break;
 683                         case 1:
 684                                 /*
 685                                  * filename
 686                                  */
 687                                 for (i = 0; i < header_size - 3; i++)
 688                                         hdr->name[i] = (char) get_byte();
 689                                 hdr->name[header_size - 3] = '\0';
 690                                 name_length = header_size - 3;
 691                                 break;
 692                         case 2:
 693                                 /*
 694                                  * directory
 695                                  */
 696                                 for (i = 0; i < header_size - 3; i++)
 697                                         dirname[i] = (char) get_byte();
 698                                 dirname[header_size - 3] = '\0';
 699                                 dir_length = header_size - 3;
 700                                 break;
 701                         case 0x40:
 702                                 /*
 703                                  * MS-DOS attribute
 704                                  */
 705                                 if (hdr->extend_type == EXTEND_MSDOS ||
 706                                     hdr->extend_type == EXTEND_HUMAN ||
 707                                     hdr->extend_type == EXTEND_GENERIC)
 708                                         hdr->attribute = get_word();
 709                                 break;
 710                         case 0x50:
 711                                 /*
 712                                  * UNIX permission
 713                                  */
 714                                 if (hdr->extend_type == EXTEND_UNIX)
 715                                         hdr->unix_mode = get_word();
 716                                 break;
 717                         case 0x51:
 718                                 /*
 719                                  * UNIX gid and uid
 720                                  */
 721                                 if (hdr->extend_type == EXTEND_UNIX) {
 722                                         hdr->unix_gid = get_word();
 723                                         hdr->unix_uid = get_word();
 724                                 }
 725                                 break;
 726                         case 0x52:
 727                                 /*
 728                                  * UNIX group name
 729                                  */
 730                 for (i = 0; i < header_size - 3; i++)
 731                     hdr->group[i] = get_byte();
 732                 hdr->group[i] = '\0';
 733                                 break;
 734                         case 0x53:
 735                                 /*
 736                                  * UNIX user name
 737                                  */
 738                 for (i = 0; i < header_size - 3; i++)
 739                     hdr->user[i] = get_byte();
 740                 hdr->user[i] = '\0';
 741                                 break;
 742                         case 0x54:
 743                                 /*
 744                                  * UNIX last modified time
 745                                  */
 746                                 if (hdr->extend_type == EXTEND_UNIX)
 747                                         hdr->unix_last_modified_stamp = (time_t) get_longword();
 748                                 break;
 749                         default:
 750                                 /*
 751                                  * other headers
 752                                  */
 753                                 setup_get(get_ptr + header_size - 3);
 754                                 break;
 755                         }
 756                 }
 757                 if (hdr->header_level != 2 && get_ptr - ptr != 2) {
 758                         hdr->packed_size -= get_ptr - ptr - 2;
 759                         hdr->header_size += get_ptr - ptr - 2;
 760                 }
 761         }
 762
 763         switch (hdr->extend_type) {
 764         case EXTEND_MSDOS:
 765         archive_delim = "\xff\\";
 766         system_delim = "//";
 767         filename_case = noconvertcase ? NONE : TO_LOWER;
 768
 769         /* fall through */
 770         case EXTEND_HUMAN:
 771                 if (hdr->header_level == 2)
 772                         hdr->unix_last_modified_stamp = hdr->last_modified_stamp;
 773                 else
 774                         hdr->unix_last_modified_stamp =
 775                                 generic_to_unix_stamp(hdr->last_modified_stamp);
 776                 break;
 777
 778 #ifdef OSK
 779         case EXTEND_OS68K:
 780         case EXTEND_XOSK:
 781 #endif
 782         case EXTEND_UNIX:
 783         archive_delim = "\xff";
 784         system_delim = "//";
 785         filename_case = NONE;
 786
 787                 break;
 788
 789         case EXTEND_MACOS:
 790         archive_delim = "\xff/:";
 791         system_delim = "/:/";
 792         filename_case = NONE;
 793
 794                 hdr->unix_last_modified_stamp =
 795                         generic_to_unix_stamp(hdr->last_modified_stamp, sizeof(hdr->name));
 796                 break;
 797
 798         default:
 799         archive_delim = "\xff\\";
 800         system_delim = "//";
 801         filename_case = noconvertcase ? NONE : TO_LOWER;
 802         /* FIXME: if small letter is included in filename,
 803            the generic_to_unix_filename() do not case conversion,
 804            but this code does not consider it. */
 805
 806                 if (hdr->header_level == 2)
 807                         hdr->unix_last_modified_stamp = hdr->last_modified_stamp;
 808                 else
 809                         hdr->unix_last_modified_stamp =
 810                                 generic_to_unix_stamp(hdr->last_modified_stamp);
 811         }
 812
 813     /* filename kanji code and delimiter conversion */
 814     if (optional_archive_kanji_code)
 815         archive_kanji_code = optional_archive_kanji_code;
 816     if (optional_system_kanji_code)
 817         system_kanji_code = optional_system_kanji_code;
 818     if (optional_archive_delim)
 819         archive_delim = optional_archive_delim;
 820     if (optional_system_delim)
 821         system_delim = optional_system_delim;
 822     if (optional_filename_case)
 823         filename_case = optional_filename_case;
 824
 825         if (dir_length) {
 826                 strcat(dirname, hdr->name);
 827                 strcpy(hdr->name, dirname);
 828                 name_length += dir_length;
 829         }
 830
 831     convert_filename(hdr->name, name_length, sizeof(hdr->name),
 832                      archive_kanji_code,
 833                      system_kanji_code,
 834                      archive_delim, system_delim, filename_case);
 835
 836         return TRUE;
 837 }
 838
 839 /* ------------------------------------------------------------------------ */
 840 void
 841 init_header(name, v_stat, hdr)
 842         char           *name;
 843         struct stat    *v_stat;
 844         LzHeader       *hdr;
 845 {
 846         int             len;
 847
 848     int system_kanji_code = default_system_kanji_code;
 849     char *archive_delim = "";
 850     char *system_delim = "";
 851     int filename_case = NONE;
 852
 853     memset(hdr, 0, sizeof(LzHeader));
 854
 855     if (optional_system_kanji_code)
 856         system_kanji_code = optional_system_kanji_code;
 857
 858         if (compress_method == LZHUFF5_METHOD_NUM)  /* Changed N.Watazaki */
 859                 memcpy(hdr->method, LZHUFF5_METHOD, METHOD_TYPE_STRAGE);
 860         else if (compress_method)
 861                 memcpy(hdr->method, LZHUFF1_METHOD, METHOD_TYPE_STRAGE);
 862         else
 863                 memcpy(hdr->method, LZHUFF0_METHOD, METHOD_TYPE_STRAGE);
 864
 865         hdr->packed_size = 0;
 866         hdr->original_size = v_stat->st_size;
 867         hdr->last_modified_stamp = unix_to_generic_stamp(v_stat->st_mtime);
 868         hdr->attribute = GENERIC_ATTRIBUTE;
 869         hdr->header_level = header_level;
 870         strcpy(hdr->name, name);
 871         len = strlen(name);
 872         hdr->crc = 0x0000;
 873         hdr->extend_type = EXTEND_UNIX;
 874         hdr->unix_last_modified_stamp = v_stat->st_mtime;
 875         /* since 00:00:00 JAN.1.1970 */
 876 #ifdef NOT_COMPATIBLE_MODE
 877         /* Please need your modification in this space. */
 878 #else
 879         hdr->unix_mode = v_stat->st_mode;
 880 #endif
 881
 882         hdr->unix_uid = v_stat->st_uid;
 883         hdr->unix_gid = v_stat->st_gid;
 884
 885 #if INCLUDE_OWNER_NAME_IN_HEADER
 886 #if HAVE_GETPWUID
 887     {
 888         struct passwd *ent = getpwuid(hdr->unix_uid);
 889
 890         if (ent) {
 891             strncpy(hdr->user, ent->pw_name, sizeof(hdr->user));
 892             if (hdr->user[sizeof(hdr->user)-1])
 893                 hdr->user[sizeof(hdr->user)-1] = 0;
 894         }
 895     }
 896 #endif
 897 #if HAVE_GETGRGID
 898     {
 899         struct group *ent = getgrgid(hdr->unix_gid);
 900
 901         if (ent) {
 902             strncpy(hdr->group, ent->gr_name, sizeof(hdr->group));
 903             if (hdr->group[sizeof(hdr->group)-1])
 904                 hdr->group[sizeof(hdr->group)-1] = 0;
 905         }
 906     }
 907 #endif
 908 #endif /* INCLUDE_OWNER_NAME_IN_HEADER */
 909         if (is_directory(v_stat)) {
 910                 memcpy(hdr->method, LZHDIRS_METHOD, METHOD_TYPE_STRAGE);
 911                 hdr->attribute = GENERIC_DIRECTORY_ATTRIBUTE;
 912                 hdr->original_size = 0;
 913                 if (len > 0 && hdr->name[len - 1] != '/')
 914                         strcpy(&hdr->name[len++], "/");
 915         }
 916
 917 #ifdef S_IFLNK
 918         if (is_symlink(v_stat)) {
 919                 char    lkname[256];    /* FIXME: no enough space */
 920                 int             len;
 921                 memcpy(hdr->method, LZHDIRS_METHOD, METHOD_TYPE_STRAGE);
 922                 hdr->attribute = GENERIC_DIRECTORY_ATTRIBUTE;
 923                 hdr->original_size = 0;
 924                 len = readlink(name, lkname, sizeof(lkname));
 925                 if (xsnprintf(hdr->name, sizeof(hdr->name),
 926                       "%s|%.*s", hdr->name, len, lkname) == -1)
 927             error("file name is too long (%s -> %.*s)", hdr->name, len, lkname);
 928         }
 929 #endif
 930
 931         if (generic_format) {
 932         filename_case = TO_UPPER;
 933         archive_delim = "\\";
 934     }
 935
 936     convert_filename(hdr->name, len, sizeof(hdr->name),
 937                      system_kanji_code,
 938                      system_kanji_code, /* no change code */
 939                      system_delim, archive_delim, filename_case);
 940 }
 941
 942 /* ------------------------------------------------------------------------ */
 943 /* Write unix extended header or generic header. */
 944 void
 945 write_header(nafp, hdr)
 946         FILE           *nafp;
 947         LzHeader       *hdr;
 948 {
 949         int             header_size;
 950         int             name_length;
 951         char            data[LZHEADER_STRAGE];
 952         char           *p;
 953         char           *headercrc_ptr;
 954     int archive_kanji_code = CODE_SJIS;
 955     int system_kanji_code = default_system_kanji_code;
 956         char            lzname[256];
 957
 958     if (optional_archive_kanji_code)
 959         archive_kanji_code = optional_archive_kanji_code;
 960     if (optional_system_kanji_code)
 961         system_kanji_code = optional_system_kanji_code;
 962
 963         memset(data, 0, LZHEADER_STRAGE);
 964         memcpy(data + I_METHOD, hdr->method, METHOD_TYPE_STRAGE);
 965         setup_put(data + I_PACKED_SIZE);
 966         put_longword(hdr->packed_size);
 967         put_longword(hdr->original_size);
 968
 969         if (hdr->header_level == HEADER_LEVEL2)
 970                 put_longword((long) hdr->unix_last_modified_stamp);
 971         else
 972                 put_longword(hdr->last_modified_stamp);
 973
 974         switch (hdr->header_level) {
 975         case HEADER_LEVEL0:
 976                 put_byte(hdr->attribute);
 977                 break;
 978         case HEADER_LEVEL1:
 979         case HEADER_LEVEL2:
 980                 put_byte(0x20);
 981                 break;
 982         }
 983
 984         put_byte(hdr->header_level);
 985
 986     strncpy(lzname, hdr->name, sizeof(lzname));
 987     convert_filename(lzname, strlen(lzname), sizeof(lzname),
 988                      system_kanji_code,
 989                      archive_kanji_code,
 990                      "\xff\\/", "\xff\xff\xff", NONE);
 991
 992         if (hdr->header_level != HEADER_LEVEL2) {
 993                 if (p = (char *) strrchr(lzname, DELIM2))
 994                         name_length = strlen(++p);
 995                 else
 996                         name_length = strlen(lzname);
 997                 put_byte(name_length);
 998                 memcpy(data + I_NAME, p ? p : lzname, name_length);
 999                 setup_put(data + I_NAME + name_length);
1000         }
1001
1002         put_word(hdr->crc);
1003         if (header_level == HEADER_LEVEL0) {
1004                 if (generic_format) {
1005                         header_size = I_GENERIC_HEADER_BOTTOM - 2 + name_length;
1006                         data[I_HEADER_SIZE] = header_size;
1007                         data[I_HEADER_CHECKSUM] = calc_sum(data + I_METHOD, header_size);
1008                 } else {
1009                         /* write old-style extend header */
1010                         put_byte(EXTEND_UNIX);
1011                         put_byte(CURRENT_UNIX_MINOR_VERSION);
1012                         put_longword((long) hdr->unix_last_modified_stamp);
1013                         put_word(hdr->unix_mode);
1014                         put_word(hdr->unix_uid);
1015                         put_word(hdr->unix_gid);
1016                         header_size = I_UNIX_EXTEND_BOTTOM - 2 + name_length;
1017                         data[I_HEADER_SIZE] = header_size;
1018                         data[I_HEADER_CHECKSUM] = calc_sum(data + I_METHOD, header_size);
1019                 }
1020         } else {
1021                 /* write extend header. */
1022                 char           *ptr;
1023
1024                 if (generic_format)
1025                         put_byte(0x00);
1026                 else
1027                         put_byte(EXTEND_UNIX);
1028
1029                 ptr = put_ptr;
1030                 if (hdr->header_level == HEADER_LEVEL2) {
1031                         /* write common header */
1032                         put_word(5);
1033                         put_byte(0x00);
1034                         headercrc_ptr = put_ptr;
1035                         put_word(0x0000);
1036                 }
1037
1038                 if (generic_format) {
1039                         header_size = put_ptr - data;   /* +2 for last 0x0000 */
1040                 } else {
1041                         put_word(5);
1042                         if (hdr->header_level == HEADER_LEVEL1)
1043                                 header_size = put_ptr - data - 2;
1044                         put_byte(0x50); /* permission */
1045                         put_word(hdr->unix_mode);
1046                         put_word(7);
1047                         put_byte(0x51); /* gid and uid */
1048                         put_word(hdr->unix_gid);
1049                         put_word(hdr->unix_uid);
1050
1051             {
1052                 int i, len = strlen(hdr->group);
1053                 put_word(len + 3);
1054                 put_byte(0x52); /* group name */
1055                 for (i = 0; i < len; i++)
1056                     put_byte(hdr->group[i]);
1057
1058                 len = strlen(hdr->user);
1059                 put_word(len + 3);
1060                 put_byte(0x53); /* user name */
1061                 for (i = 0; i < len; i++)
1062                     put_byte(hdr->user[i]);
1063             }
1064
1065                         if (p = (char *) strrchr(lzname, DELIM2)) {
1066                                 int             i;
1067
1068                                 name_length = p - lzname + 1;
1069                                 put_word(name_length + 3);
1070                                 put_byte(2);    /* dirname */
1071                                 for (i = 0; i < name_length; i++)
1072                                         put_byte(lzname[i]);
1073                         }
1074                 }               /* if generic .. */
1075
1076                 if (header_level != HEADER_LEVEL2) {
1077                         if (!generic_format) {
1078                                 put_word(7);
1079                                 put_byte(0x54); /* time stamp */
1080                                 put_longword(hdr->unix_last_modified_stamp);
1081                         }
1082                         hdr->packed_size += put_ptr - ptr;
1083                         ptr = put_ptr;
1084                         setup_put(data + I_PACKED_SIZE);
1085                         put_longword(hdr->packed_size);
1086                         put_ptr = ptr;
1087                         data[I_HEADER_SIZE] = header_size;
1088                         data[I_HEADER_CHECKSUM] = calc_sum(data + I_METHOD, header_size);
1089                 } else {                /* header level 2 */
1090                         int             i;
1091                         if (p = (char *) strrchr(lzname, DELIM2))
1092                                 name_length = strlen(++p);
1093                         else {
1094                                 p = lzname;
1095                                 name_length = strlen(lzname);
1096                         }
1097                         put_word(name_length + 3);
1098                         put_byte(1);    /* filename */
1099                         for (i = 0; i < name_length; i++)
1100                                 put_byte(*p++);
1101                 }               /* if he.. != HEAD_LV2 */
1102                 header_size = put_ptr - data;
1103         }
1104
1105         if (header_level == HEADER_LEVEL2) {
1106                 unsigned short  hcrc;
1107                 setup_put(data + I_HEADER_SIZE);
1108                 put_word(header_size + 2);
1109                 /* common header */
1110                 hcrc = calc_header_crc(data, (unsigned int) header_size + 2);
1111                 setup_put(headercrc_ptr);
1112                 put_word(hcrc);
1113         }
1114
1115         if (fwrite(data, header_size + 2, 1, nafp) == 0)
1116                 fatal_error("Cannot write to temporary file");
1117 }
1118
1119 #ifdef __APPLE__
1120 /* this is not need for Mac OS X v 10.2 later */
1121 enum {
1122   kCFStringEncodingAllowLossyConversion = 1,
1123   kCFStringEncodingBasicDirectionLeftToRight = (1 << 1),
1124   kCFStringEncodingBasicDirectionRightToLeft = (1 << 2),
1125   kCFStringEncodingSubstituteCombinings = (1 << 3),
1126   kCFStringEncodingComposeCombinings = (1 << 4),
1127   kCFStringEncodingIgnoreCombinings = (1 << 5),
1128   kCFStringEncodingUseCanonical = (1 << 6),
1129   kCFStringEncodingUseHFSPlusCanonical = (1 << 7),
1130   kCFStringEncodingPrependBOM = (1 << 8),
1131   kCFStringEncodingDisableCorporateArea = (1 << 9),
1132   kCFStringEncodingASCIICompatibleConversion = (1 << 10),
1133 };
1134
1135 static int
1136 ConvertEncodingToUTF8(const char* inCStr,
1137                       char* outUTF8Buffer,
1138                       int outUTF8BufferLength,
1139                       unsigned long scriptEncoding,
1140                       unsigned long flags)
1141 {
1142     unsigned long unicodeChars;
1143     unsigned long srcCharsUsed;
1144     unsigned long usedByteLen = 0;
1145     UniChar uniStr[512];
1146     unsigned long cfResult;
1147
1148     cfResult = CFStringEncodingBytesToUnicode(scriptEncoding,
1149                                               flags,
1150                                               (char *)inCStr,
1151                                               strlen(inCStr),
1152                                               &srcCharsUsed,
1153                                               uniStr,
1154                                               512,
1155                                               &unicodeChars);
1156     if (cfResult == 0) {
1157         cfResult = CFStringEncodingUnicodeToBytes(kCFStringEncodingUTF8,
1158                                                   flags,
1159                                                   uniStr,
1160                                                   unicodeChars,
1161                                                   &srcCharsUsed,
1162                                                   (char*)outUTF8Buffer,
1163                                                   outUTF8BufferLength - 1,
1164                                                   &usedByteLen);
1165         outUTF8Buffer[usedByteLen] = '\0';
1166     }
1167
1168     return cfResult;
1169 }
1170
1171 static int
1172 ConvertUTF8ToEncoding(const char* inUTF8Buf,
1173                       int inUTF8BufLength,
1174                       char* outCStrBuffer,
1175                       int outCStrBufferLength,
1176                       unsigned long scriptEncoding,
1177                       unsigned long flags)
1178 {
1179     unsigned long unicodeChars;
1180     unsigned long srcCharsUsed;
1181     unsigned long usedByteLen = 0;
1182     UniChar uniStr[256];
1183     unsigned long cfResult;
1184
1185     cfResult = CFStringEncodingBytesToUnicode(kCFStringEncodingUTF8,
1186                                               flags,
1187                                               (char*)inUTF8Buf,
1188                                               inUTF8BufLength,
1189                                               &srcCharsUsed,
1190                                               uniStr,
1191                                               255,
1192                                               &unicodeChars);
1193     if (cfResult == 0) {
1194         cfResult = CFStringEncodingUnicodeToBytes(scriptEncoding,
1195                                                   flags,
1196                                                   uniStr,
1197                                                   unicodeChars,
1198                                                   &srcCharsUsed,
1199                                                   (char*)outCStrBuffer,
1200                                                   outCStrBufferLength - 1,
1201                                                   &usedByteLen);
1202         outCStrBuffer[usedByteLen] = '\0';
1203     }
1204
1205     return cfResult;
1206 }
1207 #endif /* __APPLE__ */
1208
1209 char *
1210 sjis_to_utf8(char *dst, const char *src, size_t dstsize)
1211 {
1212 #ifdef __APPLE__
1213   dst[0] = '\0';
1214   ConvertEncodingToUTF8(src, dst, dstsize,
1215                         kCFStringEncodingDOSJapanese,
1216                         kCFStringEncodingUseHFSPlusCanonical);
1217
1218 #else
1219   /* not supported */
1220 #endif
1221   return dst;
1222 }
1223
1224 char *
1225 utf8_to_sjis(char *dst, const char *src, size_t dstsize)
1226 {
1227 #ifdef __APPLE__
1228   int srclen;
1229
1230   dst[0] = '\0';
1231   srclen = strlen(src);
1232   ConvertUTF8ToEncoding(src, srclen, dst, dstsize,
1233                         kCFStringEncodingDOSJapanese,
1234                         kCFStringEncodingUseHFSPlusCanonical);
1235 #else
1236   /* not supported */
1237 #endif
1238   return dst;
1239 }
1240
1241 /*
1242  * SJIS <-> EUC ÊÑ´¹´Ø¿ô
1243  * ¡ÖÆüËÜ¸ì¾ðÊó½èÍý¡×   ¥½¥Õ¥È¥Ð¥ó¥¯(³ô)
1244  *      ¤è¤êÈ´¿è(by Koji Arai)
1245  */
1246 void
1247 euc2sjis(int *p1, int *p2)
1248 {
1249     unsigned char c1 = *p1 & 0x7f;
1250     unsigned char c2 = *p2 & 0x7f;
1251     int rowoff = c1 < 0x5f ? 0x70 : 0xb0;
1252     int celoff = c1 % 2 ? (c2 > 0x5f ? 0x20 : 0x1f) : 0x7e;
1253     *p1 = ((c1 + 1) >> 1) + rowoff;
1254     *p2 += celoff - 0x80;
1255 }
1256
1257 void
1258 sjis2euc(int *p1, int *p2)
1259 {
1260     unsigned char c1 = *p1;
1261     unsigned char c2 = *p2;
1262     int adjust = c2 < 0x9f;
1263     int rowoff = c1 < 0xa0 ? 0x70 : 0xb0;
1264     int celoff = adjust ? (c2 > 0x7f ? 0x20 : 0x1f) : 0x7e;
1265     *p1 = ((c1 - rowoff) << 1) - adjust;
1266     *p2 -= celoff;
1267
1268     *p1 |= 0x80;
1269     *p2 |= 0x80;
1270 }
1271
1272 /* Local Variables: */
1273 /* mode:c */
1274 /* tab-width:4 */
1275 /* compile-command:"gcc -c header.c" */
1276 /* End: */
1277 /* vi: set tabstop=4: */