src/procmime.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 Hiroyuki Yamamoto
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <locale.h>
  30 #include <ctype.h>
  31 #include <sys/types.h>
  32 #include <sys/stat.h>
  33 #include <unistd.h>
  34
  35 #include "intl.h"
  36 #include "procmime.h"
  37 #include "procheader.h"
  38 #include "base64.h"
  39 #include "quoted-printable.h"
  40 #include "uuencode.h"
  41 #include "unmime.h"
  42 #include "html.h"
  43 #include "enriched.h"
  44 #include "codeconv.h"
  45 #include "utils.h"
  46 #include "prefs_common.h"
  47
  48 #include "prefs_gtk.h"
  49
  50 static GHashTable *procmime_get_mime_type_table (void);
  51
  52 MimeInfo *procmime_mimeinfo_new(void)
  53 {
  54         MimeInfo *mimeinfo;
  55
  56         mimeinfo = g_new0(MimeInfo, 1);
  57         mimeinfo->type          = MIMETYPE_UNKNOWN;
  58         mimeinfo->encoding_type = ENC_UNKNOWN;
  59         mimeinfo->disposition   = DISPOSITIONTYPE_UNKNOWN;
  60
  61         mimeinfo->parameters = g_hash_table_new(g_str_hash, g_str_equal);
  62         mimeinfo->node       = g_node_new(mimeinfo);
  63
  64         return mimeinfo;
  65 }
  66
  67 static gboolean procmime_mimeinfo_parameters_destroy(gpointer key, gpointer value, gpointer user_data)
  68 {
  69         g_free(key);
  70         g_free(value);
  71
  72         return TRUE;
  73 }
  74
  75 static gboolean free_func(GNode *node, gpointer data)
  76 {
  77         MimeInfo *mimeinfo = (MimeInfo *) node->data;
  78
  79         if(mimeinfo->tmpfile)
  80                 unlink(mimeinfo->filename);
  81         g_free(mimeinfo->filename);
  82
  83         g_free(mimeinfo->subtype);
  84         g_free(mimeinfo->description);
  85         g_free(mimeinfo->id);
  86
  87         g_hash_table_foreach_remove(mimeinfo->parameters, procmime_mimeinfo_parameters_destroy, NULL);
  88         g_hash_table_destroy(mimeinfo->parameters);
  89
  90         if (mimeinfo->privacy)
  91                 privacy_free_privacydata(mimeinfo->privacy);
  92
  93         g_free(mimeinfo);
  94
  95         return FALSE;
  96 }
  97
  98 void procmime_mimeinfo_free_all(MimeInfo *mimeinfo)
  99 {
 100         GNode *node;
 101
 102         g_return_if_fail(mimeinfo);
 103
 104         node = mimeinfo->node;
 105         g_node_traverse(node, G_IN_ORDER, G_TRAVERSE_ALL, -1, free_func, NULL);
 106
 107         g_node_destroy(node);
 108 }
 109
 110 #if 0 /* UNUSED */
 111 MimeInfo *procmime_mimeinfo_insert(MimeInfo *parent, MimeInfo *mimeinfo)
 112 {
 113         MimeInfo *child = parent->children;
 114
 115         if (!child)
 116                 parent->children = mimeinfo;
 117         else {
 118                 while (child->next != NULL)
 119                         child = child->next;
 120
 121                 child->next = mimeinfo;
 122         }
 123
 124         mimeinfo->parent = parent;
 125         mimeinfo->level = parent->level + 1;
 126
 127         return mimeinfo;
 128 }
 129
 130 void procmime_mimeinfo_replace(MimeInfo *old, MimeInfo *new)
 131 {
 132         MimeInfo *parent = old->parent;
 133         MimeInfo *child;
 134
 135         g_return_if_fail(parent != NULL);
 136         g_return_if_fail(new->next == NULL);
 137
 138         for (child = parent->children; child && child != old;
 139              child = child->next)
 140                 ;
 141         if (!child) {
 142                 g_warning("oops: parent can't find it's own child");
 143                 return;
 144         }
 145         procmime_mimeinfo_free_all(old);
 146
 147         if (child == parent->children) {
 148                 new->next = parent->children->next;
 149                 parent->children = new;
 150         } else {
 151                 new->next = child->next;
 152                 child = new;
 153         }
 154 }
 155 #endif
 156
 157 MimeInfo *procmime_mimeinfo_parent(MimeInfo *mimeinfo)
 158 {
 159         g_return_val_if_fail(mimeinfo != NULL, NULL);
 160
 161         if (mimeinfo->node->parent == NULL)
 162                 return NULL;
 163         return (MimeInfo *) mimeinfo->node->parent->data;
 164 }
 165
 166 MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
 167 {
 168         g_return_val_if_fail(mimeinfo != NULL, NULL);
 169         g_return_val_if_fail(mimeinfo->node != NULL, NULL);
 170
 171         if (mimeinfo->node->children)
 172                 return (MimeInfo *) mimeinfo->node->children->data;
 173         if (mimeinfo->node->next)
 174                 return (MimeInfo *) mimeinfo->node->next->data;
 175
 176         if (mimeinfo->node->parent == NULL)
 177                 return NULL;
 178
 179         while (mimeinfo->node->parent != NULL) {
 180                 mimeinfo = (MimeInfo *) mimeinfo->node->parent->data;
 181                 if (mimeinfo->node->next)
 182                         return (MimeInfo *) mimeinfo->node->next->data;
 183         }
 184
 185         return NULL;
 186 }
 187
 188 MimeInfo *procmime_scan_message(MsgInfo *msginfo)
 189 {
 190         gchar *filename;
 191         MimeInfo *mimeinfo;
 192
 193         filename = procmsg_get_message_file(msginfo);
 194         if(!filename)
 195                 return NULL;
 196         if (msginfo->folder->stype != F_QUEUE &&
 197             msginfo->folder->stype != F_DRAFT)
 198                 mimeinfo = procmime_scan_file(filename);
 199         else
 200                 mimeinfo = procmime_scan_queue_file(filename);
 201         g_free(filename);
 202
 203         return mimeinfo;
 204 }
 205
 206 enum
 207 {
 208         H_CONTENT_TRANSFER_ENCODING = 0,
 209         H_CONTENT_TYPE              = 1,
 210         H_CONTENT_DISPOSITION       = 2,
 211         H_CONTENT_DESCRIPTION       = 3,
 212         H_SUBJECT                   = 4
 213 };
 214
 215 const gchar *procmime_mimeinfo_get_parameter(MimeInfo *mimeinfo, const gchar *name)
 216 {
 217         g_return_val_if_fail(mimeinfo != NULL, NULL);
 218         g_return_val_if_fail(name != NULL, NULL);
 219
 220         return g_hash_table_lookup(mimeinfo->parameters, name);
 221 }
 222
 223 gboolean procmime_decode_content(MimeInfo *mimeinfo)
 224 {
 225         gchar buf[BUFFSIZE];
 226         gint readend;
 227         gchar *tmpfilename;
 228         gchar *mimetmpdir;
 229         FILE *outfp, *infp;
 230         struct stat statbuf;
 231
 232         g_return_val_if_fail(mimeinfo != NULL, FALSE);
 233
 234         if(mimeinfo->encoding_type == ENC_BINARY)
 235                 return TRUE;
 236
 237         infp = fopen(mimeinfo->filename, "rb");
 238         if(!infp) {
 239                 perror("fopen");
 240                 return FALSE;
 241         }
 242         fseek(infp, mimeinfo->offset, SEEK_SET);
 243
 244         mimetmpdir = get_mime_tmp_dir();
 245         outfp = get_tmpfile_in_dir(mimetmpdir, &tmpfilename);
 246         if (!outfp) {
 247                 perror("tmpfile");
 248                 return FALSE;
 249         }
 250
 251         readend = mimeinfo->offset + mimeinfo->length;
 252
 253         if (mimeinfo->encoding_type == ENC_QUOTED_PRINTABLE) {
 254                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 255                         gint len;
 256                         len = qp_decode_line(buf);
 257                         fwrite(buf, len, 1, outfp);
 258                 }
 259         } else if (mimeinfo->encoding_type == ENC_BASE64) {
 260                 gchar outbuf[BUFFSIZE];
 261                 gint len;
 262                 Base64Decoder *decoder;
 263
 264                 decoder = base64_decoder_new();
 265                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 266                         len = base64_decoder_decode(decoder, buf, outbuf);
 267                         if (len < 0) {
 268                                 g_warning("Bad BASE64 content\n");
 269                                 break;
 270                         }
 271                         fwrite(outbuf, sizeof(gchar), len, outfp);
 272                 }
 273                 base64_decoder_free(decoder);
 274         } else if (mimeinfo->encoding_type == ENC_X_UUENCODE) {
 275                 gchar outbuf[BUFFSIZE];
 276                 gint len;
 277                 gboolean flag = FALSE;
 278
 279                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 280                         if(!flag && strncmp(buf,"begin ", 6)) continue;
 281
 282                         if (flag) {
 283                                 len = fromuutobits(outbuf, buf);
 284                                 if (len <= 0) {
 285                                         if (len < 0)
 286                                                 g_warning("Bad UUENCODE content(%d)\n", len);
 287                                         break;
 288                                 }
 289                                 fwrite(outbuf, sizeof(gchar), len, outfp);
 290                         } else
 291                                 flag = TRUE;
 292                 }
 293         } else {
 294                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 295                         fputs(buf, outfp);
 296                 }
 297         }
 298
 299         fclose(outfp);
 300         fclose(infp);
 301
 302         stat(tmpfilename, &statbuf);
 303         if(mimeinfo->tmpfile)
 304                 unlink(mimeinfo->filename);
 305         g_free(mimeinfo->filename);
 306         mimeinfo->filename = tmpfilename;
 307         mimeinfo->tmpfile = TRUE;
 308         mimeinfo->offset = 0;
 309         mimeinfo->length = statbuf.st_size;
 310         mimeinfo->encoding_type = ENC_BINARY;
 311
 312         return TRUE;
 313 }
 314
 315 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
 316 {
 317         FILE *infp, *outfp;
 318         gchar buf[BUFFSIZE];
 319         gint restlength, readlength;
 320
 321         g_return_val_if_fail(outfile != NULL, -1);
 322         g_return_val_if_fail(mimeinfo != NULL, -1);
 323
 324         if(mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
 325                 return -1;
 326
 327         if ((infp = fopen(mimeinfo->filename, "rb")) == NULL) {
 328                 FILE_OP_ERROR(mimeinfo->filename, "fopen");
 329                 return -1;
 330         }
 331         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
 332                 FILE_OP_ERROR(mimeinfo->filename, "fseek");
 333                 fclose(infp);
 334                 return -1;
 335         }
 336         if ((outfp = fopen(outfile, "wb")) == NULL) {
 337                 FILE_OP_ERROR(outfile, "fopen");
 338                 fclose(infp);
 339                 return -1;
 340         }
 341
 342         restlength = mimeinfo->length;
 343
 344         while ((restlength > 0) && ((readlength = fread(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
 345                 fwrite(buf, 1, readlength, outfp);
 346                 restlength -= readlength;
 347         }
 348
 349         fclose(infp);
 350         if (fclose(outfp) == EOF) {
 351                 FILE_OP_ERROR(outfile, "fclose");
 352                 unlink(outfile);
 353                 return -1;
 354         }
 355
 356         return 0;
 357 }
 358
 359 struct ContentRenderer {
 360         char * content_type;
 361         char * renderer;
 362 };
 363
 364 static GList * renderer_list = NULL;
 365
 366 static struct ContentRenderer *
 367 content_renderer_new(char * content_type, char * renderer)
 368 {
 369         struct ContentRenderer * cr;
 370
 371         cr = g_new(struct ContentRenderer, 1);
 372         if (cr == NULL)
 373                 return NULL;
 374
 375         cr->content_type = g_strdup(content_type);
 376         cr->renderer = g_strdup(renderer);
 377
 378         return cr;
 379 }
 380
 381 static void content_renderer_free(struct ContentRenderer * cr)
 382 {
 383         g_free(cr->content_type);
 384         g_free(cr->renderer);
 385         g_free(cr);
 386 }
 387
 388 void renderer_read_config(void)
 389 {
 390         gchar buf[BUFFSIZE];
 391         FILE * f;
 392         gchar * rcpath;
 393
 394         g_list_foreach(renderer_list, (GFunc) content_renderer_free, NULL);
 395         renderer_list = NULL;
 396
 397         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, RENDERER_RC, NULL);
 398         f = fopen(rcpath, "rb");
 399         g_free(rcpath);
 400
 401         if (f == NULL)
 402                 return;
 403
 404         while (fgets(buf, BUFFSIZE, f)) {
 405                 char * p;
 406                 struct ContentRenderer * cr;
 407
 408                 strretchomp(buf);
 409                 p = strchr(buf, ' ');
 410                 if (p == NULL)
 411                         continue;
 412                 * p = 0;
 413
 414                 cr = content_renderer_new(buf, p + 1);
 415                 if (cr == NULL)
 416                         continue;
 417
 418                 renderer_list = g_list_append(renderer_list, cr);
 419         }
 420
 421         fclose(f);
 422 }
 423
 424 void renderer_write_config(void)
 425 {
 426         gchar * rcpath;
 427         PrefFile *pfile;
 428         GList * cur;
 429
 430         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, RENDERER_RC, NULL);
 431
 432         if ((pfile = prefs_write_open(rcpath)) == NULL) {
 433                 g_warning("failed to write configuration to file\n");
 434                 g_free(rcpath);
 435                 return;
 436         }
 437
 438         g_free(rcpath);
 439
 440         for(cur = renderer_list ; cur != NULL ; cur = cur->next) {
 441                 struct ContentRenderer * renderer;
 442                 renderer = cur->data;
 443                 fprintf(pfile->fp, "%s %s\n", renderer->content_type,
 444                         renderer->renderer);
 445         }
 446
 447         if (prefs_file_close(pfile) < 0) {
 448                 g_warning("failed to write configuration to file\n");
 449                 return;
 450         }
 451 }
 452
 453 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
 454 {
 455         FILE *tmpfp, *outfp;
 456         const gchar *src_codeset;
 457         gboolean conv_fail = FALSE;
 458         gchar buf[BUFFSIZE];
 459         gchar *str;
 460         struct ContentRenderer * renderer;
 461         GList * cur;
 462         gchar *tmpfile, *content_type;
 463
 464         g_return_val_if_fail(mimeinfo != NULL, NULL);
 465
 466         if (!procmime_decode_content(mimeinfo))
 467                 return NULL;
 468
 469         tmpfile = procmime_get_tmp_file_name(mimeinfo);
 470         if (tmpfile == NULL)
 471                 return NULL;
 472
 473         if (procmime_get_part(tmpfile, mimeinfo) < 0) {
 474                 g_free(tmpfile);
 475                 return NULL;
 476         }
 477
 478         tmpfp = fopen(tmpfile, "rb");
 479         if (tmpfp == NULL) {
 480                 g_free(tmpfile);
 481                 return NULL;
 482         }
 483
 484         if ((outfp = my_tmpfile()) == NULL) {
 485                 perror("tmpfile");
 486                 fclose(tmpfp);
 487                 g_free(tmpfile);
 488                 return NULL;
 489         }
 490
 491         src_codeset = prefs_common.force_charset
 492                 ? prefs_common.force_charset :
 493                 procmime_mimeinfo_get_parameter(mimeinfo, "charset");
 494
 495         renderer = NULL;
 496
 497         content_type = g_strdup_printf("%s/%s", procmime_get_type_str(mimeinfo->type),
 498                 mimeinfo->subtype);
 499         for(cur = renderer_list ; cur != NULL ; cur = cur->next) {
 500                 struct ContentRenderer * cr;
 501
 502                 cr = cur->data;
 503                 if (g_strcasecmp(cr->content_type, content_type) == 0) {
 504                         renderer = cr;
 505                         break;
 506                 }
 507         }
 508         g_free(content_type);
 509
 510         if (renderer != NULL) {
 511                 FILE * p;
 512                 int oldout;
 513
 514                 oldout = dup(1);
 515
 516                 dup2(fileno(outfp), 1);
 517
 518                 p = popen(renderer->renderer, "w");
 519                 if (p != NULL) {
 520                         size_t count;
 521
 522                         while ((count =
 523                                 fread(buf, sizeof(char), sizeof(buf),
 524                                       tmpfp)) > 0)
 525                                 fwrite(buf, sizeof(char), count, p);
 526                         pclose(p);
 527                 }
 528
 529                 dup2(oldout, 1);
 530 #warning FIXME_GTK2 HTML/RTF not yet utf8
 531 /* CodeConverter seems to have no effect here */
 532         } else if (mimeinfo->type == MIMETYPE_TEXT && !g_strcasecmp(mimeinfo->subtype, "html")) {
 533                 HTMLParser *parser;
 534                 CodeConverter *conv;
 535
 536                 conv = conv_code_converter_new(src_codeset);
 537                 parser = html_parser_new(tmpfp, conv);
 538                 while ((str = html_parse(parser)) != NULL) {
 539                         fputs(str, outfp);
 540                 }
 541                 html_parser_destroy(parser);
 542                 conv_code_converter_destroy(conv);
 543         } else if (mimeinfo->type == MIMETYPE_TEXT && !g_strcasecmp(mimeinfo->subtype, "enriched")) {
 544                 ERTFParser *parser;
 545                 CodeConverter *conv;
 546
 547                 conv = conv_code_converter_new(src_codeset);
 548                 parser = ertf_parser_new(tmpfp, conv);
 549                 while ((str = ertf_parse(parser)) != NULL) {
 550                         fputs(str, outfp);
 551                 }
 552                 ertf_parser_destroy(parser);
 553                 conv_code_converter_destroy(conv);
 554         } else if (mimeinfo->type == MIMETYPE_TEXT) {
 555                 while (fgets(buf, sizeof(buf), tmpfp) != NULL) {
 556                         str = conv_codeset_strdup(buf, src_codeset, CS_UTF_8);
 557                         if (str) {
 558                                 fputs(str, outfp);
 559                                 g_free(str);
 560                         } else {
 561                                 conv_fail = TRUE;
 562                                 fputs(buf, outfp);
 563                         }
 564                 }
 565         }
 566
 567         if (conv_fail)
 568                 g_warning("procmime_get_text_content(): Code conversion failed.\n");
 569
 570         fclose(tmpfp);
 571         rewind(outfp);
 572         unlink(tmpfile);
 573         g_free(tmpfile);
 574
 575         return outfp;
 576 }
 577
 578 /* search the first text part of (multipart) MIME message,
 579    decode, convert it and output to outfp. */
 580 FILE *procmime_get_first_text_content(MsgInfo *msginfo)
 581 {
 582         FILE *outfp = NULL;
 583         MimeInfo *mimeinfo, *partinfo;
 584
 585         g_return_val_if_fail(msginfo != NULL, NULL);
 586
 587         mimeinfo = procmime_scan_message(msginfo);
 588         if (!mimeinfo) return NULL;
 589
 590         partinfo = mimeinfo;
 591         while (partinfo && partinfo->type != MIMETYPE_TEXT)
 592                 partinfo = procmime_mimeinfo_next(partinfo);
 593
 594         if (partinfo)
 595                 outfp = procmime_get_text_content(partinfo);
 596
 597         procmime_mimeinfo_free_all(mimeinfo);
 598
 599         return outfp;
 600 }
 601
 602 gboolean procmime_find_string_part(MimeInfo *mimeinfo, const gchar *filename,
 603                                    const gchar *str, gboolean case_sens)
 604 {
 605         FILE *outfp;
 606         gchar buf[BUFFSIZE];
 607         gchar *(* StrFindFunc) (const gchar *haystack, const gchar *needle);
 608
 609         g_return_val_if_fail(mimeinfo != NULL, FALSE);
 610         g_return_val_if_fail(mimeinfo->type == MIMETYPE_TEXT, FALSE);
 611         g_return_val_if_fail(str != NULL, FALSE);
 612
 613         outfp = procmime_get_text_content(mimeinfo);
 614
 615         if (!outfp)
 616                 return FALSE;
 617
 618         if (case_sens)
 619                 StrFindFunc = strstr;
 620         else
 621                 StrFindFunc = strcasestr;
 622
 623         while (fgets(buf, sizeof(buf), outfp) != NULL) {
 624                 if (StrFindFunc(buf, str) != NULL) {
 625                         fclose(outfp);
 626                         return TRUE;
 627                 }
 628         }
 629
 630         fclose(outfp);
 631
 632         return FALSE;
 633 }
 634
 635 gboolean procmime_find_string(MsgInfo *msginfo, const gchar *str,
 636                               gboolean case_sens)
 637 {
 638         MimeInfo *mimeinfo;
 639         MimeInfo *partinfo;
 640         gchar *filename;
 641         gboolean found = FALSE;
 642
 643         g_return_val_if_fail(msginfo != NULL, FALSE);
 644         g_return_val_if_fail(str != NULL, FALSE);
 645
 646         filename = procmsg_get_message_file(msginfo);
 647         if (!filename) return FALSE;
 648         mimeinfo = procmime_scan_message(msginfo);
 649
 650         for (partinfo = mimeinfo; partinfo != NULL;
 651              partinfo = procmime_mimeinfo_next(partinfo)) {
 652                 if (partinfo->type == MIMETYPE_TEXT) {
 653                         if (procmime_find_string_part
 654                                 (partinfo, filename, str, case_sens) == TRUE) {
 655                                 found = TRUE;
 656                                 break;
 657                         }
 658                 }
 659         }
 660
 661         procmime_mimeinfo_free_all(mimeinfo);
 662         g_free(filename);
 663
 664         return found;
 665 }
 666
 667 gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
 668 {
 669         static guint32 id = 0;
 670         const gchar *base;
 671         gchar *filename;
 672         gchar f_prefix[10];
 673
 674         g_return_val_if_fail(mimeinfo != NULL, NULL);
 675
 676         g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++);
 677
 678         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_strcasecmp(mimeinfo->subtype, "html"))
 679                 base = "mimetmp.html";
 680         else {
 681                 const gchar *basetmp;
 682
 683                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
 684                 if (basetmp == NULL)
 685                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
 686                 if (basetmp == NULL)
 687                         basetmp = "mimetmp";
 688                 base = g_basename(basetmp);
 689                 if (*base == '\0') base = "mimetmp";
 690                 Xstrdup_a(base, base, return NULL);
 691                 subst_for_shellsafe_filename(base);
 692         }
 693
 694         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 695                                f_prefix, base, NULL);
 696
 697         return filename;
 698 }
 699
 700 static GList *mime_type_list = NULL;
 701
 702 gchar *procmime_get_mime_type(const gchar *filename)
 703 {
 704         static GHashTable *mime_type_table = NULL;
 705         MimeType *mime_type;
 706         const gchar *p;
 707         gchar *ext;
 708
 709         if (!mime_type_table) {
 710                 mime_type_table = procmime_get_mime_type_table();
 711                 if (!mime_type_table) return NULL;
 712         }
 713
 714         filename = g_basename(filename);
 715         p = strrchr(filename, '.');
 716         if (!p) return NULL;
 717
 718         Xstrdup_a(ext, p + 1, return NULL);
 719         g_strdown(ext);
 720         mime_type = g_hash_table_lookup(mime_type_table, ext);
 721         if (mime_type) {
 722                 gchar *str;
 723
 724                 str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
 725                                   NULL);
 726                 return str;
 727         }
 728
 729         return NULL;
 730 }
 731
 732 static guint procmime_str_hash(gconstpointer gptr)
 733 {
 734         guint hash_result = 0;
 735         const char *str;
 736
 737         for (str = gptr; str && *str; str++) {
 738                 if (isupper(*str)) hash_result += (*str + ' ');
 739                 else hash_result += *str;
 740         }
 741
 742         return hash_result;
 743 }
 744
 745 static gint procmime_str_equal(gconstpointer gptr1, gconstpointer gptr2)
 746 {
 747         const char *str1 = gptr1;
 748         const char *str2 = gptr2;
 749
 750         return !strcasecmp(str1, str2);
 751 }
 752
 753 static GHashTable *procmime_get_mime_type_table(void)
 754 {
 755         GHashTable *table = NULL;
 756         GList *cur;
 757         MimeType *mime_type;
 758         gchar **exts;
 759
 760         if (!mime_type_list) {
 761                 mime_type_list = procmime_get_mime_type_list();
 762                 if (!mime_type_list) return NULL;
 763         }
 764
 765         table = g_hash_table_new(procmime_str_hash, procmime_str_equal);
 766
 767         for (cur = mime_type_list; cur != NULL; cur = cur->next) {
 768                 gint i;
 769                 gchar *key;
 770
 771                 mime_type = (MimeType *)cur->data;
 772
 773                 if (!mime_type->extension) continue;
 774
 775                 exts = g_strsplit(mime_type->extension, " ", 16);
 776                 for (i = 0; exts[i] != NULL; i++) {
 777                         /* make the key case insensitive */
 778                         g_strdown(exts[i]);
 779                         /* use previously dup'd key on overwriting */
 780                         if (g_hash_table_lookup(table, exts[i]))
 781                                 key = exts[i];
 782                         else
 783                                 key = g_strdup(exts[i]);
 784                         g_hash_table_insert(table, key, mime_type);
 785                 }
 786                 g_strfreev(exts);
 787         }
 788
 789         return table;
 790 }
 791
 792 GList *procmime_get_mime_type_list(void)
 793 {
 794         GList *list = NULL;
 795         FILE *fp;
 796         gchar buf[BUFFSIZE];
 797         gchar *p, *delim;
 798         MimeType *mime_type;
 799
 800         if (mime_type_list)
 801                 return mime_type_list;
 802
 803         if ((fp = fopen("/etc/mime.types", "rb")) == NULL) {
 804                 if ((fp = fopen(SYSCONFDIR "/mime.types", "rb")) == NULL) {
 805                         FILE_OP_ERROR(SYSCONFDIR "/mime.types", "fopen");
 806                         return NULL;
 807                 }
 808         }
 809
 810         while (fgets(buf, sizeof(buf), fp) != NULL) {
 811                 p = strchr(buf, '#');
 812                 if (p) *p = '\0';
 813                 g_strstrip(buf);
 814
 815                 p = buf;
 816                 while (*p && !isspace(*p)) p++;
 817                 if (*p) {
 818                         *p = '\0';
 819                         p++;
 820                 }
 821                 delim = strchr(buf, '/');
 822                 if (delim == NULL) continue;
 823                 *delim = '\0';
 824
 825                 mime_type = g_new(MimeType, 1);
 826                 mime_type->type = g_strdup(buf);
 827                 mime_type->sub_type = g_strdup(delim + 1);
 828
 829                 while (*p && isspace(*p)) p++;
 830                 if (*p)
 831                         mime_type->extension = g_strdup(p);
 832                 else
 833                         mime_type->extension = NULL;
 834
 835                 list = g_list_append(list, mime_type);
 836         }
 837
 838         fclose(fp);
 839
 840         if (!list)
 841                 g_warning("Can't read mime.types\n");
 842
 843         return list;
 844 }
 845
 846 EncodingType procmime_get_encoding_for_charset(const gchar *charset)
 847 {
 848         if (!charset)
 849                 return ENC_8BIT;
 850         else if (!strncasecmp(charset, "ISO-2022-", 9) ||
 851                  !strcasecmp(charset, "US-ASCII"))
 852                 return ENC_7BIT;
 853         else if (!strcasecmp(charset, "ISO-8859-5") ||
 854                  !strncasecmp(charset, "KOI8-", 5) ||
 855                  !strcasecmp(charset, "Windows-1251"))
 856                 return ENC_8BIT;
 857         else if (!strncasecmp(charset, "ISO-8859-", 9))
 858                 return ENC_QUOTED_PRINTABLE;
 859         else
 860                 return ENC_8BIT;
 861 }
 862
 863 EncodingType procmime_get_encoding_for_file(const gchar *file)
 864 {
 865         FILE *fp;
 866         guchar buf[BUFSIZ];
 867         size_t len;
 868
 869         if ((fp = fopen(file, "rb")) == NULL) {
 870                 FILE_OP_ERROR(file, "fopen");
 871                 return ENC_UNKNOWN;
 872         }
 873
 874         while ((len = fread(buf, sizeof(gchar), sizeof(buf), fp)) > 0) {
 875                 guchar *p;
 876                 gint i;
 877
 878                 for (p = buf, i = 0; i < len; p++, i++) {
 879                         if (*p & 0x80) {
 880                                 fclose(fp);
 881                                 return ENC_BASE64;
 882                         }
 883                 }
 884         }
 885
 886         fclose(fp);
 887         return ENC_7BIT;
 888 }
 889
 890 struct EncodingTable
 891 {
 892         gchar *str;
 893         EncodingType enc_type;
 894 };
 895
 896 struct EncodingTable encoding_table[] = {
 897         {"7bit", ENC_7BIT},
 898         {"8bit", ENC_8BIT},
 899         {"binary", ENC_BINARY},
 900         {"quoted-printable", ENC_QUOTED_PRINTABLE},
 901         {"base64", ENC_BASE64},
 902         {"x-uuencode", ENC_UNKNOWN},
 903         {NULL, ENC_UNKNOWN},
 904 };
 905
 906 const gchar *procmime_get_encoding_str(EncodingType encoding)
 907 {
 908         struct EncodingTable *enc_table;
 909
 910         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
 911                 if (enc_table->enc_type == encoding)
 912                         return enc_table->str;
 913         }
 914         return NULL;
 915 }
 916
 917 /* --- NEW MIME STUFF --- */
 918 struct TypeTable
 919 {
 920         gchar *str;
 921         MimeMediaType type;
 922 };
 923
 924 static struct TypeTable mime_type_table[] = {
 925         {"text", MIMETYPE_TEXT},
 926         {"image", MIMETYPE_IMAGE},
 927         {"audio", MIMETYPE_AUDIO},
 928         {"video", MIMETYPE_VIDEO},
 929         {"application", MIMETYPE_APPLICATION},
 930         {"message", MIMETYPE_MESSAGE},
 931         {"multipart", MIMETYPE_MULTIPART},
 932         {NULL, 0},
 933 };
 934
 935 const gchar *procmime_get_type_str(MimeMediaType type)
 936 {
 937         struct TypeTable *type_table;
 938
 939         for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
 940                 if (type_table->type == type)
 941                         return type_table->str;
 942         }
 943         return NULL;
 944 }
 945
 946 void procmime_parse_mimepart(MimeInfo *parent,
 947                              gchar *content_type,
 948                              gchar *content_encoding,
 949                              gchar *content_description,
 950                              gchar *content_id,
 951                              gchar *content_disposition,
 952                              const gchar *filename,
 953                              guint offset,
 954                              guint length);
 955
 956 void procmime_parse_message_rfc822(MimeInfo *mimeinfo)
 957 {
 958         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
 959                                 {"Content-Transfer-Encoding:",
 960                                                    NULL, FALSE},
 961                                 {"Content-Description:",
 962                                                    NULL, TRUE},
 963                                 {"Content-ID:",
 964                                                    NULL, TRUE},
 965                                 {"Content-Disposition:",
 966                                                    NULL, TRUE},
 967                                 {NULL,             NULL, FALSE}};
 968         guint content_start, i;
 969         FILE *fp;
 970
 971         if(mimeinfo->encoding_type != ENC_BINARY &&
 972            mimeinfo->encoding_type != ENC_7BIT &&
 973            mimeinfo->encoding_type != ENC_8BIT)
 974                 procmime_decode_content(mimeinfo);
 975
 976         fp = fopen(mimeinfo->filename, "rb");
 977         fseek(fp, mimeinfo->offset, SEEK_SET);
 978         procheader_get_header_fields(fp, hentry);
 979         content_start = ftell(fp);
 980         fclose(fp);
 981
 982         procmime_parse_mimepart(mimeinfo,
 983                                 hentry[0].body, hentry[1].body,
 984                                 hentry[2].body, hentry[3].body,
 985                                 hentry[4].body,
 986                                 mimeinfo->filename, content_start,
 987                                 mimeinfo->length - (content_start - mimeinfo->offset));
 988         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
 989                 g_free(hentry[i].body);
 990                 hentry[i].body = NULL;
 991         }
 992 }
 993
 994 void procmime_parse_multipart(MimeInfo *mimeinfo)
 995 {
 996         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
 997                                 {"Content-Transfer-Encoding:",
 998                                                    NULL, FALSE},
 999                                 {"Content-Description:",
1000                                                    NULL, TRUE},
1001                                 {"Content-ID:",
1002                                                    NULL, TRUE},
1003                                 {"Content-Disposition:",
1004                                                    NULL, TRUE},
1005                                 {NULL,             NULL, FALSE}};
1006         gchar *p;
1007         gchar *boundary;
1008         gint boundary_len = 0, lastoffset = -1, i;
1009         gchar buf[BUFFSIZE];
1010         FILE *fp;
1011
1012         boundary = g_hash_table_lookup(mimeinfo->parameters, "boundary");
1013         if (!boundary)
1014                 return;
1015         boundary_len = strlen(boundary);
1016
1017         if (mimeinfo->encoding_type != ENC_BINARY &&
1018             mimeinfo->encoding_type != ENC_7BIT &&
1019             mimeinfo->encoding_type != ENC_8BIT)
1020                 procmime_decode_content(mimeinfo);
1021
1022         fp = fopen(mimeinfo->filename, "rb");
1023         fseek(fp, mimeinfo->offset, SEEK_SET);
1024         while ((p = fgets(buf, sizeof(buf), fp)) != NULL) {
1025                 if (ftell(fp) > (mimeinfo->offset + mimeinfo->length))
1026                         break;
1027
1028                 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1029                         if (lastoffset != -1) {
1030                                 procmime_parse_mimepart(mimeinfo,
1031                                                         hentry[0].body, hentry[1].body,
1032                                                         hentry[2].body, hentry[3].body,
1033                                                         hentry[4].body,
1034                                                         mimeinfo->filename, lastoffset,
1035                                                         (ftell(fp) - strlen(buf)) - lastoffset);
1036                         }
1037
1038                         if (buf[2 + boundary_len]     == '-' &&
1039                             buf[2 + boundary_len + 1] == '-')
1040                                 break;
1041
1042                         for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1043                                 g_free(hentry[i].body);
1044                                 hentry[i].body = NULL;
1045                         }
1046                         procheader_get_header_fields(fp, hentry);
1047                         lastoffset = ftell(fp);
1048                 }
1049         }
1050         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1051                 g_free(hentry[i].body);
1052                 hentry[i].body = NULL;
1053         }
1054         fclose(fp);
1055 }
1056
1057 static void add_to_mimeinfo_parameters(gchar **parts, MimeInfo *mimeinfo)
1058 {
1059         gchar **strarray;
1060
1061         for (strarray = parts; *strarray != NULL; strarray++) {
1062                 gchar **parameters_parts;
1063
1064                 parameters_parts = g_strsplit(*strarray, "=", 2);
1065                 if ((parameters_parts[0] != NULL) && (parameters_parts[1] != NULL)) {
1066                         gchar *firstspace;
1067
1068                         g_strstrip(parameters_parts[0]);
1069                         g_strstrip(parameters_parts[1]);
1070                         g_strdown(parameters_parts[0]);
1071                         if(parameters_parts[1][0] == '"')
1072                                 extract_quote(parameters_parts[1], '"');
1073                         else if ((firstspace = strchr(parameters_parts[1], ' ')) != NULL)
1074                                 *firstspace = '\0';
1075                         if(g_hash_table_lookup(mimeinfo->parameters,
1076                                                parameters_parts[0]) == NULL)
1077                                 g_hash_table_insert(mimeinfo->parameters,
1078                                                     g_strdup(parameters_parts[0]),
1079                                                     g_strdup(parameters_parts[1]));
1080                 }
1081                 g_strfreev(parameters_parts);
1082         }
1083 }
1084
1085 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1086 {
1087         gchar **content_type_parts;
1088         gchar **strarray;
1089         gchar *str;
1090         struct TypeTable *typetablearray;
1091
1092         g_return_if_fail(content_type != NULL);
1093         g_return_if_fail(mimeinfo != NULL);
1094
1095         /* Split content type into parts and remove trailing
1096            and leading whitespaces from all strings */
1097         content_type_parts = g_strsplit(content_type, ";", 0);
1098         for (strarray = content_type_parts; *strarray != NULL; strarray++) {
1099                 g_strstrip(*strarray);
1100         }
1101
1102         /* Get mimeinfo->type and mimeinfo->subtype */
1103         str = content_type_parts[0];
1104         /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1105          * if it's not available we use the default Content-Type */
1106         if ((str == NULL) || (str[0] == '\0') || (strchr(str, '/') == NULL)) {
1107                 mimeinfo->type = MIMETYPE_TEXT;
1108                 mimeinfo->subtype = g_strdup("plain");
1109                 if(g_hash_table_lookup(mimeinfo->parameters,
1110                                        "charset") == NULL)
1111                         g_hash_table_insert(mimeinfo->parameters,
1112                                             g_strdup("charset"),
1113                                             g_strdup("us-ascii"));
1114                 g_strfreev(content_type_parts);
1115                 return;
1116         } else {
1117                 mimeinfo->type = MIMETYPE_UNKNOWN;
1118                 for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++) {
1119                         if (g_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0 &&
1120                             str[strlen(typetablearray->str)] == '/') {
1121                                 mimeinfo->type = typetablearray->type;
1122                                 mimeinfo->subtype = g_strdup(str + strlen(typetablearray->str) + 1);
1123                                 break;
1124                         }
1125                 }
1126
1127                 /* Get mimeinfo->parmeters */
1128                 add_to_mimeinfo_parameters(&content_type_parts[1], mimeinfo);
1129         }
1130
1131         g_strfreev(content_type_parts);
1132 }
1133
1134 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1135 {
1136         gchar **content_disp_parts;
1137         gchar **strarray;
1138         gchar *str;
1139
1140         g_return_if_fail(content_disposition != NULL);
1141         g_return_if_fail(mimeinfo != NULL);
1142
1143         /* Split into parts and remove trailing
1144            and leading whitespaces from all strings */
1145         content_disp_parts = g_strsplit(content_disposition, ";", 0);
1146         for (strarray = content_disp_parts; *strarray != NULL; strarray++) {
1147                 g_strstrip(*strarray);
1148         }
1149         /* Get mimeinfo->disposition */
1150         str = content_disp_parts[0];
1151         if (str == NULL) {
1152                 g_strfreev(content_disp_parts);
1153                 return;
1154         }
1155         if (!g_strcasecmp(str, "inline"))
1156                 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1157         else if (!g_strcasecmp(str, "attachment"))
1158                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1159         else
1160                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1161
1162         add_to_mimeinfo_parameters(&content_disp_parts[1], mimeinfo);
1163         g_strfreev(content_disp_parts);
1164 }
1165
1166
1167 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1168 {
1169         struct EncodingTable *enc_table;
1170
1171         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1172                 if (g_strcasecmp(enc_table->str, content_encoding) == 0) {
1173                         mimeinfo->encoding_type = enc_table->enc_type;
1174                         return;
1175                 }
1176         }
1177         mimeinfo->encoding_type = ENC_UNKNOWN;
1178         return;
1179 }
1180
1181 void procmime_parse_mimepart(MimeInfo *parent,
1182                              gchar *content_type,
1183                              gchar *content_encoding,
1184                              gchar *content_description,
1185                              gchar *content_id,
1186                              gchar *content_disposition,
1187                              const gchar *filename,
1188                              guint offset,
1189                              guint length)
1190 {
1191         MimeInfo *mimeinfo;
1192
1193         /* Create MimeInfo */
1194         mimeinfo = procmime_mimeinfo_new();
1195         if (parent != NULL)
1196                 g_node_append(parent->node, mimeinfo->node);
1197         mimeinfo->filename = g_strdup(filename);
1198         mimeinfo->offset = offset;
1199         mimeinfo->length = length;
1200
1201         if (content_type != NULL) {
1202                 procmime_parse_content_type(content_type, mimeinfo);
1203         } else {
1204                 mimeinfo->type = MIMETYPE_TEXT;
1205                 mimeinfo->subtype = g_strdup("plain");
1206                 if(g_hash_table_lookup(mimeinfo->parameters,
1207                                        "charset") == NULL)
1208                         g_hash_table_insert(mimeinfo->parameters, g_strdup("charset"), g_strdup("us-ascii"));
1209         }
1210
1211         if (content_encoding != NULL) {
1212                 procmime_parse_content_encoding(content_encoding, mimeinfo);
1213         } else {
1214                 mimeinfo->encoding_type = ENC_7BIT;
1215         }
1216
1217         if (content_description != NULL)
1218                 mimeinfo->description = g_strdup(content_description);
1219         else
1220                 mimeinfo->description = NULL;
1221
1222         if (content_id != NULL)
1223                 mimeinfo->id = g_strdup(content_id);
1224         else
1225                 mimeinfo->id = NULL;
1226
1227         if (content_disposition != NULL)
1228                 procmime_parse_content_disposition(content_disposition, mimeinfo);
1229         else
1230                 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
1231
1232         /* Call parser for mime type */
1233         switch (mimeinfo->type) {
1234                 case MIMETYPE_MESSAGE:
1235                         if (g_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
1236                                 procmime_parse_message_rfc822(mimeinfo);
1237                         }
1238                         break;
1239
1240                 case MIMETYPE_MULTIPART:
1241                         procmime_parse_multipart(mimeinfo);
1242                         break;
1243
1244                 default:
1245                         break;
1246         }
1247 }
1248
1249 static gchar *typenames[] = {
1250     "text",
1251     "image",
1252     "audio",
1253     "video",
1254     "application",
1255     "message",
1256     "multipart",
1257     "unknown",
1258 };
1259
1260 static gboolean output_func(GNode *node, gpointer data)
1261 {
1262         guint i, depth;
1263         MimeInfo *mimeinfo = (MimeInfo *) node->data;
1264
1265         depth = g_node_depth(node);
1266         for(i = 0; i < depth; i++)
1267                 printf("    ");
1268         printf("%s/%s (offset:%d length:%d encoding: %d)\n", typenames[mimeinfo->type], mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
1269
1270         return FALSE;
1271 }
1272
1273 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
1274 {
1275         g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
1276 }
1277
1278 static MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset)
1279 {
1280         MimeInfo *mimeinfo;
1281         struct stat buf;
1282
1283         stat(filename, &buf);
1284
1285         mimeinfo = procmime_mimeinfo_new();
1286         mimeinfo->encoding_type = ENC_BINARY;
1287         mimeinfo->type = MIMETYPE_MESSAGE;
1288         mimeinfo->subtype = g_strdup("rfc822");
1289         mimeinfo->filename = g_strdup(filename);
1290         mimeinfo->offset = offset;
1291         mimeinfo->length = buf.st_size - offset;
1292
1293         procmime_parse_message_rfc822(mimeinfo);
1294         if (debug_get_mode())
1295                 output_mime_structure(mimeinfo, 0);
1296
1297         return mimeinfo;
1298 }
1299
1300 MimeInfo *procmime_scan_file(gchar *filename)
1301 {
1302         MimeInfo *mimeinfo;
1303
1304         g_return_val_if_fail(filename != NULL, NULL);
1305
1306         mimeinfo = procmime_scan_file_with_offset(filename, 0);
1307
1308         return mimeinfo;
1309 }
1310
1311 MimeInfo *procmime_scan_queue_file(gchar *filename)
1312 {
1313         FILE *fp;
1314         MimeInfo *mimeinfo;
1315         gchar buf[BUFFSIZE];
1316         gint offset = 0;
1317
1318         g_return_val_if_fail(filename != NULL, NULL);
1319
1320         /* Open file */
1321         if((fp = fopen(filename, "rb")) == NULL)
1322                 return NULL;
1323         /* Skip queue header */
1324         while (fgets(buf, sizeof(buf), fp) != NULL)
1325                 if (buf[0] == '\r' || buf[0] == '\n') break;
1326         offset = ftell(fp);
1327         fclose(fp);
1328
1329         mimeinfo = procmime_scan_file_with_offset(filename, offset);
1330
1331         return mimeinfo;
1332 }