src/procheader.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 Hiroyuki Yamamoto and the Sylpheed-Claws team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <glib/gi18n.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <stdlib.h>
  29 #include <time.h>
  30 #include <sys/stat.h>
  31
  32 #include "procheader.h"
  33 #include "procmsg.h"
  34 #include "codeconv.h"
  35 #include "prefs_common.h"
  36 #include "utils.h"
  37
  38 #define BUFFSIZE        8192
  39
  40 typedef char *(*getlinefunc) (char *, size_t, void *);
  41 typedef int (*peekcharfunc) (void *);
  42 typedef int (*getcharfunc) (void *);
  43 typedef gint (*get_one_field_func) (gchar *, size_t, void *, HeaderEntry[]);
  44
  45 static gint string_get_one_field(gchar *buf, size_t len, char **str,
  46                                  HeaderEntry hentry[]);
  47
  48 static char *string_getline(char *buf, size_t len, char **str);
  49 static int string_peekchar(char **str);
  50 static int file_peekchar(FILE *fp);
  51 static gint generic_get_one_field(gchar *buf, size_t len, void *data,
  52                                   HeaderEntry hentry[],
  53                                   getlinefunc getline,
  54                                   peekcharfunc peekchar,
  55                                   gboolean unfold);
  56 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
  57                              gboolean full, gboolean decrypted);
  58
  59
  60 gint procheader_get_one_field(gchar *buf, size_t len, FILE *fp,
  61                               HeaderEntry hentry[])
  62 {
  63         return generic_get_one_field(buf, len, fp, hentry,
  64                                      (getlinefunc)fgets, (peekcharfunc)file_peekchar,
  65                                      TRUE);
  66 }
  67
  68 static gint string_get_one_field(gchar *buf, size_t len, char **str,
  69                                  HeaderEntry hentry[])
  70 {
  71         return generic_get_one_field(buf, len, str, hentry,
  72                                      (getlinefunc)string_getline,
  73                                      (peekcharfunc)string_peekchar,
  74                                      TRUE);
  75 }
  76
  77 static char *string_getline(char *buf, size_t len, char **str)
  78 {
  79         if (!*str || !**str)
  80                 return NULL;
  81
  82         for (; **str && len > 1; --len)
  83                 if ((*buf++ = *(*str)++) == '\n')
  84                     break;
  85         *buf = '\0';
  86
  87         return buf;
  88 }
  89
  90 static int string_peekchar(char **str)
  91 {
  92         return **str;
  93 }
  94
  95 static int file_peekchar(FILE *fp)
  96 {
  97         return ungetc(getc(fp), fp);
  98 }
  99
 100 static gint generic_get_one_field(gchar *buf, size_t len, void *data,
 101                           HeaderEntry *hentry,
 102                           getlinefunc getline, peekcharfunc peekchar,
 103                           gboolean unfold)
 104 {
 105         gint nexthead;
 106         gint hnum = 0;
 107         HeaderEntry *hp = NULL;
 108
 109         if (hentry != NULL) {
 110                 /* skip non-required headers */
 111                 do {
 112                         do {
 113                                 if (getline(buf, len, data) == NULL)
 114                                         return -1;
 115                                 if (buf[0] == '\r' || buf[0] == '\n')
 116                                         return -1;
 117                         } while (buf[0] == ' ' || buf[0] == '\t');
 118
 119                         for (hp = hentry, hnum = 0; hp->name != NULL;
 120                              hp++, hnum++) {
 121                                 if (!g_ascii_strncasecmp(hp->name, buf,
 122                                                  strlen(hp->name)))
 123                                         break;
 124                         }
 125                 } while (hp->name == NULL);
 126         } else {
 127                 if (getline(buf, len, data) == NULL) return -1;
 128                 if (buf[0] == '\r' || buf[0] == '\n') return -1;
 129         }
 130
 131         /* unfold line */
 132         while (1) {
 133                 nexthead = peekchar(data);
 134                 /* ([*WSP CRLF] 1*WSP) */
 135                 if (nexthead == ' ' || nexthead == '\t') {
 136                         size_t buflen;
 137                         /* trim previous trailing \n if requesting one header or
 138                          * unfolding was requested */
 139                         if ((!hentry && unfold) || (hp && hp->unfold))
 140                                 strretchomp(buf);
 141
 142                         buflen = strlen(buf);
 143
 144                         /* concatenate next line */
 145                         if ((len - buflen) > 2) {
 146                                 if (getline(buf + buflen, len - buflen, data) == NULL)
 147                                         break;
 148                         } else
 149                                 break;
 150                 } else {
 151                         /* remove trailing new line */
 152                         strretchomp(buf);
 153                         break;
 154                 }
 155         }
 156
 157         return hnum;
 158 }
 159
 160 gint procheader_get_one_field_asis(gchar *buf, size_t len, FILE *fp)
 161 {
 162         return generic_get_one_field(buf, len, fp, NULL,
 163                                      (getlinefunc)fgets,
 164                                      (peekcharfunc)file_peekchar,
 165                                      FALSE);
 166 }
 167
 168 GPtrArray *procheader_get_header_array_asis(FILE *fp)
 169 {
 170         gchar buf[BUFFSIZE];
 171         GPtrArray *headers;
 172         Header *header;
 173
 174         g_return_val_if_fail(fp != NULL, NULL);
 175
 176         headers = g_ptr_array_new();
 177
 178         while (procheader_get_one_field_asis(buf, sizeof(buf), fp) != -1) {
 179                 if ((header = procheader_parse_header(buf)) != NULL)
 180                         g_ptr_array_add(headers, header);
 181                         /*
 182                 if (*buf == ':') continue;
 183                 for (p = buf; *p && *p != ' '; p++) {
 184                         if (*p == ':') {
 185                                 header = g_new(Header, 1);
 186                                 header->name = g_strndup(buf, p - buf);
 187                                 p++;
 188                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 189                                 header->body = g_strdup(tmp);
 190
 191                                 g_ptr_array_add(headers, header);
 192                                 break;
 193                         }
 194                 }
 195                         */
 196         }
 197
 198         return headers;
 199 }
 200
 201 void procheader_header_array_destroy(GPtrArray *harray)
 202 {
 203         gint i;
 204         Header *header;
 205
 206         for (i = 0; i < harray->len; i++) {
 207                 header = g_ptr_array_index(harray, i);
 208                 procheader_header_free(header);
 209         }
 210
 211         g_ptr_array_free(harray, TRUE);
 212 }
 213
 214 void procheader_header_free(Header *header)
 215 {
 216         if (!header) return;
 217
 218         g_free(header->name);
 219         g_free(header->body);
 220         g_free(header);
 221 }
 222
 223 /*
 224   tests whether two headers' names are equal
 225   remove the trailing ':' or ' ' before comparing
 226 */
 227
 228 gboolean procheader_headername_equal(char * hdr1, char * hdr2)
 229 {
 230         int len1;
 231         int len2;
 232
 233         len1 = strlen(hdr1);
 234         len2 = strlen(hdr2);
 235         if (hdr1[len1 - 1] == ':')
 236                 len1--;
 237         if (hdr2[len2 - 1] == ':')
 238                 len2--;
 239         if (len1 != len2)
 240                 return 0;
 241
 242         return (g_ascii_strncasecmp(hdr1, hdr2, len1) == 0);
 243 }
 244
 245 /*
 246   parse headers, for example :
 247   From: dinh@enseirb.fr becomes :
 248   header->name = "From:"
 249   header->body = "dinh@enseirb.fr"
 250  */
 251
 252 Header * procheader_parse_header(gchar * buf)
 253 {
 254         gchar *p = buf;
 255         Header * header;
 256
 257         if ((*buf == ':') || (*buf == ' '))
 258                 return NULL;
 259
 260         for (p = buf; *p ; p++) {
 261                 if ((*p == ':') || (*p == ' ')) {
 262                         header = g_new(Header, 1);
 263                         header->name = g_strndup(buf, p - buf + 1);
 264                         p++;
 265                         while (*p == ' ' || *p == '\t') p++;
 266                         header->body = conv_unmime_header(p, NULL);
 267                         return header;
 268                 }
 269         }
 270         return NULL;
 271 }
 272
 273 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 274 {
 275         gchar buf[BUFFSIZE];
 276         HeaderEntry *hp;
 277         gint hnum;
 278         gchar *p;
 279
 280         if (hentry == NULL) return;
 281
 282         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 283                != -1) {
 284                 hp = hentry + hnum;
 285
 286                 p = buf + strlen(hp->name);
 287                 while (*p == ' ' || *p == '\t') p++;
 288
 289                 if (hp->body == NULL)
 290                         hp->body = g_strdup(p);
 291                 else if (procheader_headername_equal(hp->name, "To") ||
 292                          procheader_headername_equal(hp->name, "Cc")) {
 293                         gchar *tp = hp->body;
 294                         hp->body = g_strconcat(tp, ", ", p, NULL);
 295                         g_free(tp);
 296                 }
 297         }
 298 }
 299
 300 MsgInfo *procheader_parse_file(const gchar *file, MsgFlags flags,
 301                                gboolean full, gboolean decrypted)
 302 {
 303         struct stat s;
 304         FILE *fp;
 305         MsgInfo *msginfo;
 306
 307         if (stat(file, &s) < 0) {
 308                 FILE_OP_ERROR(file, "stat");
 309                 return NULL;
 310         }
 311         if (!S_ISREG(s.st_mode))
 312                 return NULL;
 313
 314         if ((fp = g_fopen(file, "rb")) == NULL) {
 315                 FILE_OP_ERROR(file, "fopen");
 316                 return NULL;
 317         }
 318
 319         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 320         fclose(fp);
 321
 322         if (msginfo) {
 323                 msginfo->size = s.st_size;
 324                 msginfo->mtime = s.st_mtime;
 325         }
 326
 327         return msginfo;
 328 }
 329
 330 MsgInfo *procheader_parse_str(const gchar *str, MsgFlags flags, gboolean full,
 331                               gboolean decrypted)
 332 {
 333         return parse_stream(&str, TRUE, flags, full, decrypted);
 334 }
 335
 336 enum
 337 {
 338         H_DATE          = 0,
 339         H_FROM          = 1,
 340         H_TO            = 2,
 341         H_CC            = 3,
 342         H_NEWSGROUPS    = 4,
 343         H_SUBJECT       = 5,
 344         H_MSG_ID        = 6,
 345         H_REFERENCES    = 7,
 346         H_IN_REPLY_TO   = 8,
 347         H_CONTENT_TYPE  = 9,
 348         H_SEEN          = 10,
 349         H_STATUS        = 11,
 350         H_X_STATUS      = 12,
 351         H_FROM_SPACE    = 13,
 352         H_SC_PLANNED_DOWNLOAD = 14,
 353         H_SC_MESSAGE_SIZE = 15,
 354         H_FACE          = 16,
 355         H_X_FACE        = 17,
 356         H_DISPOSITION_NOTIFICATION_TO = 18,
 357         H_RETURN_RECEIPT_TO = 19,
 358         H_SC_PARTIALLY_RETRIEVED = 20,
 359         H_SC_ACCOUNT_SERVER = 21,
 360         H_SC_ACCOUNT_LOGIN = 22,
 361 };
 362
 363 static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 364                                    {"From:",            NULL, TRUE},
 365                                    {"To:",              NULL, TRUE},
 366                                    {"Cc:",              NULL, TRUE},
 367                                    {"Newsgroups:",      NULL, TRUE},
 368                                    {"Subject:",         NULL, TRUE},
 369                                    {"Message-ID:",      NULL, FALSE},
 370                                    {"References:",      NULL, FALSE},
 371                                    {"In-Reply-To:",     NULL, FALSE},
 372                                    {"Content-Type:",    NULL, FALSE},
 373                                    {"Seen:",            NULL, FALSE},
 374                                    {"Status:",          NULL, FALSE},
 375                                    {"X-Status:",        NULL, FALSE},
 376                                    {"From ",            NULL, FALSE},
 377                                    {"SC-Marked-For-Download:", NULL, FALSE},
 378                                    {"SC-Message-Size:", NULL, FALSE},
 379                                    {"Face:",            NULL, FALSE},
 380                                    {"X-Face:",          NULL, FALSE},
 381                                    {"Disposition-Notification-To:", NULL, FALSE},
 382                                    {"Return-Receipt-To:", NULL, FALSE},
 383                                    {"SC-Partially-Retrieved:", NULL, FALSE},
 384                                    {"SC-Account-Server:", NULL, FALSE},
 385                                    {"SC-Account-Login:",NULL, FALSE},
 386                                    {NULL,               NULL, FALSE}};
 387
 388 static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 389                                     {"From:",           NULL, TRUE},
 390                                     {"To:",             NULL, TRUE},
 391                                     {"Cc:",             NULL, TRUE},
 392                                     {"Newsgroups:",     NULL, TRUE},
 393                                     {"Subject:",        NULL, TRUE},
 394                                     {"Message-ID:",     NULL, FALSE},
 395                                     {"References:",     NULL, FALSE},
 396                                     {"In-Reply-To:",    NULL, FALSE},
 397                                     {"Content-Type:",   NULL, FALSE},
 398                                     {"Seen:",           NULL, FALSE},
 399                                     {"Status:",         NULL, FALSE},
 400                                     {"X-Status:",       NULL, FALSE},
 401                                     {"From ",           NULL, FALSE},
 402                                     {"SC-Marked-For-Download:", NULL, FALSE},
 403                                     {"SC-Message-Size:",NULL, FALSE},
 404                                     {NULL,              NULL, FALSE}};
 405
 406 HeaderEntry* procheader_get_headernames(gboolean full)
 407 {
 408         return full ? hentry_full : hentry_short;
 409 }
 410
 411 MsgInfo *procheader_parse_stream(FILE *fp, MsgFlags flags, gboolean full,
 412                                  gboolean decrypted)
 413 {
 414         return parse_stream(fp, FALSE, flags, full, decrypted);
 415 }
 416
 417 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
 418                              gboolean full, gboolean decrypted)
 419 {
 420         MsgInfo *msginfo;
 421         gchar buf[BUFFSIZE];
 422         gchar *p, *tmp;
 423         gchar *hp;
 424         HeaderEntry *hentry;
 425         gint hnum;
 426         get_one_field_func get_one_field =
 427                 isstring ? (get_one_field_func)string_get_one_field
 428                          : (get_one_field_func)procheader_get_one_field;
 429
 430         hentry = procheader_get_headernames(full);
 431
 432         if (MSG_IS_QUEUED(flags) || MSG_IS_DRAFT(flags)) {
 433                 while (get_one_field(buf, sizeof(buf), data, NULL) != -1)
 434                         ; /* loop */
 435         }
 436
 437         msginfo = procmsg_msginfo_new();
 438
 439         if (flags.tmp_flags || flags.perm_flags)
 440                 msginfo->flags = flags;
 441         else
 442                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 443
 444         msginfo->inreplyto = NULL;
 445
 446         while ((hnum = get_one_field(buf, sizeof(buf), data, hentry))
 447                != -1) {
 448                 hp = buf + strlen(hentry[hnum].name);
 449                 while (*hp == ' ' || *hp == '\t') hp++;
 450
 451                 switch (hnum) {
 452                 case H_DATE:
 453                         if (msginfo->date) break;
 454                         msginfo->date_t =
 455                                 procheader_date_parse(NULL, hp, 0);
 456                         if (g_utf8_validate(hp, -1, NULL)) {
 457                                 msginfo->date = g_strdup(hp);
 458                         } else {
 459                                 gchar *utf = conv_codeset_strdup(
 460                                         hp,
 461                                         conv_get_locale_charset_str_no_utf8(),
 462                                         CS_INTERNAL);
 463                                 if (utf == NULL ||
 464                                     !g_utf8_validate(utf, -1, NULL)) {
 465                                         g_free(utf);
 466                                         utf = g_malloc(strlen(buf)*2+1);
 467                                         conv_localetodisp(utf,
 468                                                 strlen(hp)*2+1, hp);
 469                                 }
 470                                 msginfo->date = utf;
 471                         }
 472                         break;
 473                 case H_FROM:
 474                         if (msginfo->from) break;
 475                         msginfo->from = conv_unmime_header(hp, NULL);
 476                         msginfo->fromname = procheader_get_fromname(msginfo->from);
 477                         replace_returns(msginfo->from);
 478                         replace_returns(msginfo->fromname);
 479                         break;
 480                 case H_TO:
 481                         tmp = conv_unmime_header(hp, NULL);
 482                         if (msginfo->to) {
 483                                 p = msginfo->to;
 484                                 msginfo->to =
 485                                         g_strconcat(p, ", ", tmp, NULL);
 486                                 g_free(p);
 487                         } else
 488                                 msginfo->to = g_strdup(tmp);
 489                         g_free(tmp);
 490                         break;
 491                 case H_CC:
 492                         tmp = conv_unmime_header(hp, NULL);
 493                         if (msginfo->cc) {
 494                                 p = msginfo->cc;
 495                                 msginfo->cc =
 496                                         g_strconcat(p, ", ", tmp, NULL);
 497                                 g_free(p);
 498                         } else
 499                                 msginfo->cc = g_strdup(tmp);
 500                         g_free(tmp);
 501                         break;
 502                 case H_NEWSGROUPS:
 503                         if (msginfo->newsgroups) {
 504                                 p = msginfo->newsgroups;
 505                                 msginfo->newsgroups =
 506                                         g_strconcat(p, ",", hp, NULL);
 507                                 g_free(p);
 508                         } else
 509                                 msginfo->newsgroups = g_strdup(hp);
 510                         break;
 511                 case H_SUBJECT:
 512                         if (msginfo->subject) break;
 513                         msginfo->subject = conv_unmime_header(hp, NULL);
 514                         replace_returns(msginfo->subject);
 515                         break;
 516                 case H_MSG_ID:
 517                         if (msginfo->msgid) break;
 518
 519                         extract_parenthesis(hp, '<', '>');
 520                         remove_space(hp);
 521                         msginfo->msgid = g_strdup(hp);
 522                         break;
 523                 case H_REFERENCES:
 524                         msginfo->references =
 525                                 references_list_prepend(msginfo->references,
 526                                                         hp);
 527                         break;
 528                 case H_IN_REPLY_TO:
 529                         if (msginfo->inreplyto) break;
 530
 531                         eliminate_parenthesis(hp, '(', ')');
 532                         if ((p = strrchr(hp, '<')) != NULL &&
 533                             strchr(p + 1, '>') != NULL) {
 534                                 extract_parenthesis(p, '<', '>');
 535                                 remove_space(p);
 536                                 if (*p != '\0')
 537                                         msginfo->inreplyto = g_strdup(p);
 538                         }
 539                         break;
 540                 case H_CONTENT_TYPE:
 541                         if (!g_ascii_strncasecmp(hp, "multipart/", 10))
 542                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MULTIPART);
 543                         break;
 544 #ifdef ALLOW_HEADER_HINT
 545                 case H_SEEN:
 546                         /* mnews Seen header */
 547                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 548                         break;
 549 #endif
 550                 case H_FACE:
 551                         if (msginfo->face) break;
 552                         msginfo->face = g_strdup(hp);
 553                         break;
 554                 case H_X_FACE:
 555                         if (msginfo->xface) break;
 556                         msginfo->xface = g_strdup(hp);
 557                         break;
 558                 case H_DISPOSITION_NOTIFICATION_TO:
 559                         if (msginfo->dispositionnotificationto) break;
 560                         msginfo->dispositionnotificationto = g_strdup(hp);
 561                         break;
 562                 case H_RETURN_RECEIPT_TO:
 563                         if (msginfo->returnreceiptto) break;
 564                         msginfo->returnreceiptto = g_strdup(hp);
 565                         break;
 566                 case H_SC_PARTIALLY_RETRIEVED:
 567                         if (msginfo->partial_recv) break;
 568                         msginfo->partial_recv = g_strdup(hp);
 569                         break;
 570                 case H_SC_ACCOUNT_SERVER:
 571                         if (msginfo->account_server) break;
 572                         msginfo->account_server = g_strdup(hp);
 573                         break;
 574                 case H_SC_ACCOUNT_LOGIN:
 575                         if (msginfo->account_login) break;
 576                         msginfo->account_login = g_strdup(hp);
 577                         break;
 578                 case H_SC_MESSAGE_SIZE:
 579                         if (msginfo->total_size) break;
 580                         msginfo->total_size = atoi(hp);
 581                         break;
 582                 case H_SC_PLANNED_DOWNLOAD:
 583                         msginfo->planned_download = atoi(hp);
 584                         break;
 585 #ifdef ALLOW_HEADER_HINT
 586                 case H_STATUS:
 587                         if (strchr(hp, 'R') != NULL)
 588                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 589                         if (strchr(hp, 'O') != NULL)
 590                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 591                         if (strchr(hp, 'U') != NULL)
 592                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 593                         break;
 594                 case H_X_STATUS:
 595                         if (strchr(hp, 'D') != NULL)
 596                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 597                                               MSG_REALLY_DELETED);
 598                         if (strchr(hp, 'F') != NULL)
 599                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 600                         if (strchr(hp, 'd') != NULL)
 601                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 602                         if (strchr(hp, 'r') != NULL)
 603                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 604                         if (strchr(hp, 'f') != NULL)
 605                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 606                         break;
 607 #endif
 608                 case H_FROM_SPACE:
 609                         if (msginfo->fromspace) break;
 610                         msginfo->fromspace = g_strdup(hp);
 611                         break;
 612                 default:
 613                         break;
 614                 }
 615         }
 616
 617         if (!msginfo->inreplyto && msginfo->references)
 618                 msginfo->inreplyto =
 619                         g_strdup((gchar *)msginfo->references->data);
 620
 621         return msginfo;
 622 }
 623
 624 gchar *procheader_get_fromname(const gchar *str)
 625 {
 626         gchar *tmp, *name;
 627
 628         Xstrdup_a(tmp, str, return NULL);
 629
 630         if (*tmp == '\"') {
 631                 extract_quote(tmp, '\"');
 632                 g_strstrip(tmp);
 633         } else if (strchr(tmp, '<')) {
 634                 eliminate_parenthesis(tmp, '<', '>');
 635                 g_strstrip(tmp);
 636                 if (*tmp == '\0') {
 637                         strcpy(tmp, str);
 638                         extract_parenthesis(tmp, '<', '>');
 639                         g_strstrip(tmp);
 640                 }
 641         } else if (strchr(tmp, '(')) {
 642                 extract_parenthesis(tmp, '(', ')');
 643                 g_strstrip(tmp);
 644         }
 645
 646         if (*tmp == '\0')
 647                 name = g_strdup(str);
 648         else
 649                 name = g_strdup(tmp);
 650
 651         return name;
 652 }
 653
 654 static gint procheader_scan_date_string(const gchar *str,
 655                                         gchar *weekday, gint *day,
 656                                         gchar *month, gint *year,
 657                                         gint *hh, gint *mm, gint *ss,
 658                                         gchar *zone)
 659 {
 660         gint result;
 661
 662         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d %5s",
 663                         weekday, day, month, year, hh, mm, ss, zone);
 664         if (result == 8) return 0;
 665
 666         result = sscanf(str, "%3s,%d %9s %d %2d:%2d:%2d %5s",
 667                         weekday, day, month, year, hh, mm, ss, zone);
 668         if (result == 8) return 0;
 669
 670         result = sscanf(str, "%d %9s %d %2d:%2d:%2d %5s",
 671                         day, month, year, hh, mm, ss, zone);
 672         if (result == 7) return 0;
 673
 674         *zone = '\0';
 675         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d",
 676                         weekday, day, month, year, hh, mm, ss);
 677         if (result == 7) return 0;
 678
 679         result = sscanf(str, "%d %9s %d %2d:%2d:%2d",
 680                         day, month, year, hh, mm, ss);
 681         if (result == 6) return 0;
 682
 683         *ss = 0;
 684         result = sscanf(str, "%10s %d %9s %d %2d:%2d %5s",
 685                         weekday, day, month, year, hh, mm, zone);
 686         if (result == 7) return 0;
 687
 688         result = sscanf(str, "%d %9s %d %2d:%2d %5s",
 689                         day, month, year, hh, mm, zone);
 690         if (result == 6) return 0;
 691
 692         *zone = '\0';
 693         result = sscanf(str, "%10s %d %9s %d %2d:%2d",
 694                         weekday, day, month, year, hh, mm);
 695         if (result == 6) return 0;
 696
 697         result = sscanf(str, "%d %9s %d %2d:%2d",
 698                         day, month, year, hh, mm);
 699         if (result == 5) return 0;
 700
 701         return -1;
 702 }
 703
 704 /*
 705  * Hiro, most UNIXen support this function:
 706  * http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?getdate
 707  */
 708 gboolean procheader_date_parse_to_tm(const gchar *src, struct tm *t, char *zone)
 709 {
 710         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 711         gchar weekday[11];
 712         gint day;
 713         gchar month[10];
 714         gint year;
 715         gint hh, mm, ss;
 716         GDateMonth dmonth;
 717         gchar *p;
 718
 719         if (!t)
 720                 return FALSE;
 721
 722         memset(t, 0, sizeof *t);
 723
 724         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 725                                         &hh, &mm, &ss, zone) < 0) {
 726                 g_warning("Invalid date: %s\n", src);
 727                 return FALSE;
 728         }
 729
 730         /* Y2K compliant :) */
 731         if (year < 100) {
 732                 if (year < 70)
 733                         year += 2000;
 734                 else
 735                         year += 1900;
 736         }
 737
 738         month[3] = '\0';
 739         if ((p = strstr(monthstr, month)) != NULL)
 740                 dmonth = (gint)(p - monthstr) / 3 + 1;
 741         else {
 742                 g_warning("Invalid month: %s\n", month);
 743                 dmonth = G_DATE_BAD_MONTH;
 744         }
 745
 746         t->tm_sec = ss;
 747         t->tm_min = mm;
 748         t->tm_hour = hh;
 749         t->tm_mday = day;
 750         t->tm_mon = dmonth - 1;
 751         t->tm_year = year - 1900;
 752         t->tm_wday = 0;
 753         t->tm_yday = 0;
 754         t->tm_isdst = -1;
 755
 756         mktime(t);
 757
 758         return TRUE;
 759 }
 760
 761 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 762 {
 763         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 764         gchar weekday[11];
 765         gint day;
 766         gchar month[10];
 767         gint year;
 768         gint hh, mm, ss;
 769         gchar zone[6];
 770         GDateMonth dmonth = G_DATE_BAD_MONTH;
 771         struct tm t;
 772         gchar *p;
 773         time_t timer;
 774         time_t tz_offset;
 775
 776         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 777                                         &hh, &mm, &ss, zone) < 0) {
 778                 if (dest && len > 0)
 779                         strncpy2(dest, src, len);
 780                 return 0;
 781         }
 782
 783         /* Y2K compliant :) */
 784         if (year < 1000) {
 785                 if (year < 50)
 786                         year += 2000;
 787                 else
 788                         year += 1900;
 789         }
 790
 791         month[3] = '\0';
 792         for (p = monthstr; *p != '\0'; p += 3) {
 793                 if (!g_ascii_strncasecmp(p, month, 3)) {
 794                         dmonth = (gint)(p - monthstr) / 3 + 1;
 795                         break;
 796                 }
 797         }
 798
 799         t.tm_sec = ss;
 800         t.tm_min = mm;
 801         t.tm_hour = hh;
 802         t.tm_mday = day;
 803         t.tm_mon = dmonth - 1;
 804         t.tm_year = year - 1900;
 805         t.tm_wday = 0;
 806         t.tm_yday = 0;
 807         t.tm_isdst = -1;
 808
 809         timer = mktime(&t);
 810         tz_offset = remote_tzoffset_sec(zone);
 811         if (tz_offset != -1)
 812                 timer += tzoffset_sec(&timer) - tz_offset;
 813
 814         if (dest)
 815                 procheader_date_get_localtime(dest, len, timer);
 816
 817         return timer;
 818 }
 819
 820 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 821 {
 822         struct tm *lt;
 823         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 824         gchar *str;
 825         const gchar *src_codeset, *dest_codeset;
 826
 827         lt = localtime(&timer);
 828
 829         if (prefs_common.date_format)
 830                 strftime(dest, len, prefs_common.date_format, lt);
 831         else
 832                 strftime(dest, len, default_format, lt);
 833
 834         src_codeset = conv_get_locale_charset_str();
 835         dest_codeset = CS_UTF_8;
 836         str = conv_codeset_strdup(dest, src_codeset, dest_codeset);
 837         if (str) {
 838                 g_snprintf(dest, len, "%s", str);
 839                 strncpy2(dest, str, len);
 840                 g_free(str);
 841         }
 842 }
 843
 844 /* Added by Mel Hadasht on 27 Aug 2001 */
 845 /* Get a header from msginfo */
 846 gint procheader_get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len, gchar *header)
 847 {
 848         gchar *file;
 849         FILE *fp;
 850         HeaderEntry hentry[]={ { NULL, NULL, TRUE  },
 851                                { NULL, NULL, FALSE } };
 852         gint val;
 853
 854         hentry[0].name = header;
 855
 856         g_return_val_if_fail(msginfo != NULL, -1);
 857         file = procmsg_get_message_file_path(msginfo);
 858         if ((fp = g_fopen(file, "rb")) == NULL) {
 859                FILE_OP_ERROR(file, "fopen");
 860                g_free(file);
 861                return -1;
 862         }
 863         val = procheader_get_one_field(buf,len, fp, hentry);
 864         if (fclose(fp) == EOF) {
 865                 FILE_OP_ERROR(file, "fclose");
 866                 g_unlink(file);
 867                 g_free(file);
 868                 return -1;
 869         }
 870
 871         g_free(file);
 872         if (val == -1)
 873                 return -1;
 874
 875         return 0;
 876 }