src/procmime.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2004 Hiroyuki Yamamoto & 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., 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 <stdio.h>
  27 #include <glib.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <locale.h>
  31 #include <ctype.h>
  32 #include <sys/types.h>
  33 #include <sys/stat.h>
  34 #include <unistd.h>
  35
  36 #include "intl.h"
  37 #include "procmime.h"
  38 #include "procheader.h"
  39 #include "base64.h"
  40 #include "quoted-printable.h"
  41 #include "uuencode.h"
  42 #include "unmime.h"
  43 #include "html.h"
  44 #include "enriched.h"
  45 #include "codeconv.h"
  46 #include "utils.h"
  47 #include "prefs_common.h"
  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->content        = MIMECONTENT_EMPTY;
  58         mimeinfo->data.filename  = NULL;
  59
  60         mimeinfo->type           = MIMETYPE_UNKNOWN;
  61         mimeinfo->encoding_type  = ENC_UNKNOWN;
  62         mimeinfo->typeparameters = g_hash_table_new(g_str_hash, g_str_equal);
  63
  64         mimeinfo->disposition    = DISPOSITIONTYPE_UNKNOWN;
  65         mimeinfo->dispositionparameters
  66                                  = g_hash_table_new(g_str_hash, g_str_equal);
  67
  68         mimeinfo->node           = g_node_new(mimeinfo);
  69
  70         return mimeinfo;
  71 }
  72
  73 static gboolean procmime_mimeinfo_parameters_destroy(gpointer key, gpointer value, gpointer user_data)
  74 {
  75         g_free(key);
  76         g_free(value);
  77
  78         return TRUE;
  79 }
  80
  81 static gchar *forced_charset = NULL;
  82
  83 void procmime_force_charset(const gchar *str)
  84 {
  85         g_free(forced_charset);
  86         forced_charset = NULL;
  87         if (str)
  88                 forced_charset = g_strdup(str);
  89 }
  90
  91 static EncodingType forced_encoding = 0;
  92
  93 void procmime_force_encoding(EncodingType encoding)
  94 {
  95         forced_encoding = encoding;
  96 }
  97
  98 static gboolean free_func(GNode *node, gpointer data)
  99 {
 100         MimeInfo *mimeinfo = (MimeInfo *) node->data;
 101
 102         switch (mimeinfo->content) {
 103         case MIMECONTENT_FILE:
 104                 if (mimeinfo->tmp)
 105                         unlink(mimeinfo->data.filename);
 106                 g_free(mimeinfo->data.filename);
 107                 break;
 108
 109         case MIMECONTENT_MEM:
 110                 if (mimeinfo->tmp)
 111                         g_free(mimeinfo->data.mem);
 112         default:
 113                 break;
 114         }
 115
 116         g_free(mimeinfo->subtype);
 117         g_free(mimeinfo->description);
 118         g_free(mimeinfo->id);
 119
 120         g_hash_table_foreach_remove(mimeinfo->typeparameters,
 121                 procmime_mimeinfo_parameters_destroy, NULL);
 122         g_hash_table_destroy(mimeinfo->typeparameters);
 123         g_hash_table_foreach_remove(mimeinfo->dispositionparameters,
 124                 procmime_mimeinfo_parameters_destroy, NULL);
 125         g_hash_table_destroy(mimeinfo->dispositionparameters);
 126
 127         if (mimeinfo->privacy)
 128                 privacy_free_privacydata(mimeinfo->privacy);
 129
 130         g_free(mimeinfo);
 131
 132         return FALSE;
 133 }
 134
 135 void procmime_mimeinfo_free_all(MimeInfo *mimeinfo)
 136 {
 137         GNode *node;
 138
 139         g_return_if_fail(mimeinfo);
 140
 141         node = mimeinfo->node;
 142         g_node_traverse(node, G_IN_ORDER, G_TRAVERSE_ALL, -1, free_func, NULL);
 143
 144         g_node_destroy(node);
 145 }
 146
 147 #if 0 /* UNUSED */
 148 MimeInfo *procmime_mimeinfo_insert(MimeInfo *parent, MimeInfo *mimeinfo)
 149 {
 150         MimeInfo *child = parent->children;
 151
 152         if (!child)
 153                 parent->children = mimeinfo;
 154         else {
 155                 while (child->next != NULL)
 156                         child = child->next;
 157
 158                 child->next = mimeinfo;
 159         }
 160
 161         mimeinfo->parent = parent;
 162         mimeinfo->level = parent->level + 1;
 163
 164         return mimeinfo;
 165 }
 166
 167 void procmime_mimeinfo_replace(MimeInfo *old, MimeInfo *new)
 168 {
 169         MimeInfo *parent = old->parent;
 170         MimeInfo *child;
 171
 172         g_return_if_fail(parent != NULL);
 173         g_return_if_fail(new->next == NULL);
 174
 175         for (child = parent->children; child && child != old;
 176              child = child->next)
 177                 ;
 178         if (!child) {
 179                 g_warning("oops: parent can't find it's own child");
 180                 return;
 181         }
 182         procmime_mimeinfo_free_all(old);
 183
 184         if (child == parent->children) {
 185                 new->next = parent->children->next;
 186                 parent->children = new;
 187         } else {
 188                 new->next = child->next;
 189                 child = new;
 190         }
 191 }
 192 #endif
 193
 194 MimeInfo *procmime_mimeinfo_parent(MimeInfo *mimeinfo)
 195 {
 196         g_return_val_if_fail(mimeinfo != NULL, NULL);
 197         g_return_val_if_fail(mimeinfo->node != NULL, NULL);
 198
 199         if (mimeinfo->node->parent == NULL)
 200                 return NULL;
 201         return (MimeInfo *) mimeinfo->node->parent->data;
 202 }
 203
 204 MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
 205 {
 206         g_return_val_if_fail(mimeinfo != NULL, NULL);
 207         g_return_val_if_fail(mimeinfo->node != NULL, NULL);
 208
 209         if (mimeinfo->node->children)
 210                 return (MimeInfo *) mimeinfo->node->children->data;
 211         if (mimeinfo->node->next)
 212                 return (MimeInfo *) mimeinfo->node->next->data;
 213
 214         if (mimeinfo->node->parent == NULL)
 215                 return NULL;
 216
 217         while (mimeinfo->node->parent != NULL) {
 218                 mimeinfo = (MimeInfo *) mimeinfo->node->parent->data;
 219                 if (mimeinfo->node->next)
 220                         return (MimeInfo *) mimeinfo->node->next->data;
 221         }
 222
 223         return NULL;
 224 }
 225
 226 MimeInfo *procmime_scan_message(MsgInfo *msginfo)
 227 {
 228         gchar *filename;
 229         MimeInfo *mimeinfo;
 230
 231         filename = procmsg_get_message_file(msginfo);
 232         if (!filename)
 233                 return NULL;
 234         if (msginfo->folder->stype != F_QUEUE &&
 235             msginfo->folder->stype != F_DRAFT)
 236                 mimeinfo = procmime_scan_file(filename);
 237         else
 238                 mimeinfo = procmime_scan_queue_file(filename);
 239         g_free(filename);
 240
 241         return mimeinfo;
 242 }
 243
 244 enum
 245 {
 246         H_CONTENT_TRANSFER_ENCODING = 0,
 247         H_CONTENT_TYPE              = 1,
 248         H_CONTENT_DISPOSITION       = 2,
 249         H_CONTENT_DESCRIPTION       = 3,
 250         H_SUBJECT                   = 4
 251 };
 252
 253 const gchar *procmime_mimeinfo_get_parameter(MimeInfo *mimeinfo, const gchar *name)
 254 {
 255         const gchar *value;
 256
 257         g_return_val_if_fail(mimeinfo != NULL, NULL);
 258         g_return_val_if_fail(name != NULL, NULL);
 259
 260         value = g_hash_table_lookup(mimeinfo->dispositionparameters, name);
 261         if (value == NULL)
 262                 value = g_hash_table_lookup(mimeinfo->typeparameters, name);
 263
 264         return value;
 265 }
 266
 267 gboolean procmime_decode_content(MimeInfo *mimeinfo)
 268 {
 269         gchar buf[BUFFSIZE];
 270         gint readend;
 271         gchar *tmpfilename;
 272         gchar *mimetmpdir;
 273         FILE *outfp, *infp;
 274         struct stat statbuf;
 275
 276         EncodingType encoding = forced_encoding
 277                                 ? forced_encoding
 278                                 : mimeinfo->encoding_type;
 279
 280         g_return_val_if_fail(mimeinfo != NULL, FALSE);
 281
 282         if (encoding == ENC_UNKNOWN ||
 283             encoding == ENC_BINARY)
 284                 return TRUE;
 285
 286         infp = fopen(mimeinfo->data.filename, "rb");
 287         if (!infp) {
 288                 perror("fopen");
 289                 return FALSE;
 290         }
 291         fseek(infp, mimeinfo->offset, SEEK_SET);
 292
 293         mimetmpdir = get_mime_tmp_dir();
 294         outfp = get_tmpfile_in_dir(mimetmpdir, &tmpfilename);
 295         if (!outfp) {
 296                 perror("tmpfile");
 297                 return FALSE;
 298         }
 299
 300         readend = mimeinfo->offset + mimeinfo->length;
 301
 302         if (encoding == ENC_QUOTED_PRINTABLE) {
 303                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 304                         gint len;
 305                         len = qp_decode_line(buf);
 306                         fwrite(buf, len, 1, outfp);
 307                 }
 308         } else if (encoding == ENC_BASE64) {
 309                 gchar outbuf[BUFFSIZE];
 310                 gint len;
 311                 Base64Decoder *decoder;
 312
 313                 decoder = base64_decoder_new();
 314                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 315                         len = base64_decoder_decode(decoder, buf, outbuf);
 316                         if (len < 0) {
 317                                 g_warning("Bad BASE64 content\n");
 318                                 break;
 319                         }
 320                         fwrite(outbuf, sizeof(gchar), len, outfp);
 321                 }
 322                 base64_decoder_free(decoder);
 323         } else if (encoding == ENC_X_UUENCODE) {
 324                 gchar outbuf[BUFFSIZE];
 325                 gint len;
 326                 gboolean flag = FALSE;
 327
 328                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 329                         if (!flag && strncmp(buf,"begin ", 6)) continue;
 330
 331                         if (flag) {
 332                                 len = fromuutobits(outbuf, buf);
 333                                 if (len <= 0) {
 334                                         if (len < 0)
 335                                                 g_warning("Bad UUENCODE content(%d)\n", len);
 336                                         break;
 337                                 }
 338                                 fwrite(outbuf, sizeof(gchar), len, outfp);
 339                         } else
 340                                 flag = TRUE;
 341                 }
 342         } else {
 343                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 344                         fputs(buf, outfp);
 345                 }
 346         }
 347
 348         fclose(outfp);
 349         fclose(infp);
 350
 351         stat(tmpfilename, &statbuf);
 352         if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
 353                 unlink(mimeinfo->data.filename);
 354         if (mimeinfo->data.filename != NULL)
 355                 g_free(mimeinfo->data.filename);
 356         mimeinfo->data.filename = tmpfilename;
 357         mimeinfo->tmp = TRUE;
 358         mimeinfo->offset = 0;
 359         mimeinfo->length = statbuf.st_size;
 360         mimeinfo->encoding_type = ENC_BINARY;
 361
 362         return TRUE;
 363 }
 364
 365 #define B64_LINE_SIZE           57
 366 #define B64_BUFFSIZE            77
 367
 368 gboolean procmime_encode_content(MimeInfo *mimeinfo, EncodingType encoding)
 369 {
 370         FILE *infp, *outfp;
 371         gint len;
 372         gchar *tmpfilename;
 373         gchar *mimetmpdir;
 374         struct stat statbuf;
 375
 376         if (mimeinfo->encoding_type != ENC_UNKNOWN &&
 377             mimeinfo->encoding_type != ENC_BINARY &&
 378             mimeinfo->encoding_type != ENC_7BIT &&
 379             mimeinfo->encoding_type != ENC_8BIT)
 380                 if(!procmime_decode_content(mimeinfo))
 381                         return FALSE;
 382
 383         mimetmpdir = get_mime_tmp_dir();
 384         outfp = get_tmpfile_in_dir(mimetmpdir, &tmpfilename);
 385         if (!outfp) {
 386                 perror("tmpfile");
 387                 return FALSE;
 388         }
 389
 390         if (mimeinfo->content == MIMECONTENT_FILE) {
 391                 if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
 392                         g_warning("Can't open file %s\n", mimeinfo->data.filename);
 393                         return FALSE;
 394                 }
 395         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 396                 infp = str_open_as_stream(mimeinfo->data.mem);
 397                 if (infp == NULL)
 398                         return FALSE;
 399         }
 400
 401         if (encoding == ENC_BASE64) {
 402                 gchar inbuf[B64_LINE_SIZE], outbuf[B64_BUFFSIZE];
 403
 404                 while ((len = fread(inbuf, sizeof(gchar),
 405                                     B64_LINE_SIZE, infp))
 406                        == B64_LINE_SIZE) {
 407                         base64_encode(outbuf, inbuf, B64_LINE_SIZE);
 408                         fputs(outbuf, outfp);
 409                         fputc('\n', outfp);
 410                 }
 411                 if (len > 0 && feof(infp)) {
 412                         base64_encode(outbuf, inbuf, len);
 413                         fputs(outbuf, outfp);
 414                         fputc('\n', outfp);
 415                 }
 416         } else if (encoding == ENC_QUOTED_PRINTABLE) {
 417                 gchar inbuf[BUFFSIZE], outbuf[BUFFSIZE * 4];
 418
 419                 while (fgets(inbuf, sizeof(inbuf), infp) != NULL) {
 420                         qp_encode_line(outbuf, inbuf);
 421                         fputs(outbuf, outfp);
 422                 }
 423         } else {
 424                 gchar buf[BUFFSIZE];
 425
 426                 while (fgets(buf, sizeof(buf), infp) != NULL) {
 427                         strcrchomp(buf);
 428                         fputs(buf, outfp);
 429                 }
 430         }
 431
 432         fclose(outfp);
 433         fclose(infp);
 434
 435         if (mimeinfo->content == MIMECONTENT_FILE) {
 436                 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
 437                         unlink(mimeinfo->data.filename);
 438                 g_free(mimeinfo->data.filename);
 439         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 440                 if (mimeinfo->tmp && (mimeinfo->data.mem != NULL))
 441                         g_free(mimeinfo->data.mem);
 442         }
 443
 444         stat(tmpfilename, &statbuf);
 445         mimeinfo->content = MIMECONTENT_FILE;
 446         mimeinfo->data.filename = tmpfilename;
 447         mimeinfo->tmp = TRUE;
 448         mimeinfo->offset = 0;
 449         mimeinfo->length = statbuf.st_size;
 450         mimeinfo->encoding_type = encoding;
 451
 452         return TRUE;
 453 }
 454
 455 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
 456 {
 457         FILE *infp, *outfp;
 458         gchar buf[BUFFSIZE];
 459         gint restlength, readlength;
 460
 461         g_return_val_if_fail(outfile != NULL, -1);
 462         g_return_val_if_fail(mimeinfo != NULL, -1);
 463
 464         if (mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
 465                 return -1;
 466
 467         if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
 468                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
 469                 return -1;
 470         }
 471         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
 472                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
 473                 fclose(infp);
 474                 return -1;
 475         }
 476         if ((outfp = fopen(outfile, "wb")) == NULL) {
 477                 FILE_OP_ERROR(outfile, "fopen");
 478                 fclose(infp);
 479                 return -1;
 480         }
 481
 482         restlength = mimeinfo->length;
 483
 484         while ((restlength > 0) && ((readlength = fread(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
 485                 fwrite(buf, 1, readlength, outfp);
 486                 restlength -= readlength;
 487         }
 488
 489         fclose(infp);
 490         if (fclose(outfp) == EOF) {
 491                 FILE_OP_ERROR(outfile, "fclose");
 492                 unlink(outfile);
 493                 return -1;
 494         }
 495
 496         return 0;
 497 }
 498
 499 struct ContentRenderer {
 500         char * content_type;
 501         char * renderer;
 502 };
 503
 504 static GList * renderer_list = NULL;
 505
 506 static struct ContentRenderer *
 507 content_renderer_new(char * content_type, char * renderer)
 508 {
 509         struct ContentRenderer * cr;
 510
 511         cr = g_new(struct ContentRenderer, 1);
 512         if (cr == NULL)
 513                 return NULL;
 514
 515         cr->content_type = g_strdup(content_type);
 516         cr->renderer = g_strdup(renderer);
 517
 518         return cr;
 519 }
 520
 521 static void content_renderer_free(struct ContentRenderer * cr)
 522 {
 523         g_free(cr->content_type);
 524         g_free(cr->renderer);
 525         g_free(cr);
 526 }
 527
 528 void renderer_read_config(void)
 529 {
 530         gchar buf[BUFFSIZE];
 531         FILE * f;
 532         gchar * rcpath;
 533
 534         g_list_foreach(renderer_list, (GFunc) content_renderer_free, NULL);
 535         renderer_list = NULL;
 536
 537         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, RENDERER_RC, NULL);
 538         f = fopen(rcpath, "rb");
 539         g_free(rcpath);
 540
 541         if (f == NULL)
 542                 return;
 543
 544         while (fgets(buf, BUFFSIZE, f)) {
 545                 char * p;
 546                 struct ContentRenderer * cr;
 547
 548                 strretchomp(buf);
 549                 p = strchr(buf, ' ');
 550                 if (p == NULL)
 551                         continue;
 552                 * p = 0;
 553
 554                 cr = content_renderer_new(buf, p + 1);
 555                 if (cr == NULL)
 556                         continue;
 557
 558                 renderer_list = g_list_append(renderer_list, cr);
 559         }
 560
 561         fclose(f);
 562 }
 563
 564 void renderer_write_config(void)
 565 {
 566         gchar * rcpath;
 567         PrefFile *pfile;
 568         GList * cur;
 569
 570         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, RENDERER_RC, NULL);
 571
 572         if ((pfile = prefs_write_open(rcpath)) == NULL) {
 573                 g_warning("failed to write configuration to file\n");
 574                 g_free(rcpath);
 575                 return;
 576         }
 577
 578         g_free(rcpath);
 579
 580         for (cur = renderer_list ; cur != NULL ; cur = cur->next) {
 581                 struct ContentRenderer * renderer;
 582                 renderer = cur->data;
 583                 fprintf(pfile->fp, "%s %s\n", renderer->content_type,
 584                         renderer->renderer);
 585         }
 586
 587         if (prefs_file_close(pfile) < 0) {
 588                 g_warning("failed to write configuration to file\n");
 589                 return;
 590         }
 591 }
 592
 593 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
 594 {
 595         FILE *tmpfp, *outfp;
 596         const gchar *src_codeset;
 597         gboolean conv_fail = FALSE;
 598         gchar buf[BUFFSIZE];
 599         gchar *str;
 600         struct ContentRenderer * renderer;
 601         GList * cur;
 602         gchar *tmpfile, *content_type;
 603
 604         g_return_val_if_fail(mimeinfo != NULL, NULL);
 605
 606         if (!procmime_decode_content(mimeinfo))
 607                 return NULL;
 608
 609         tmpfile = procmime_get_tmp_file_name(mimeinfo);
 610         if (tmpfile == NULL)
 611                 return NULL;
 612
 613         if (procmime_get_part(tmpfile, mimeinfo) < 0) {
 614                 g_free(tmpfile);
 615                 return NULL;
 616         }
 617
 618         tmpfp = fopen(tmpfile, "rb");
 619         if (tmpfp == NULL) {
 620                 g_free(tmpfile);
 621                 return NULL;
 622         }
 623
 624         if ((outfp = my_tmpfile()) == NULL) {
 625                 perror("tmpfile");
 626                 fclose(tmpfp);
 627                 g_free(tmpfile);
 628                 return NULL;
 629         }
 630
 631         src_codeset = forced_charset
 632                       ? forced_charset :
 633                       procmime_mimeinfo_get_parameter(mimeinfo, "charset");
 634
 635         renderer = NULL;
 636
 637         content_type = procmime_get_content_type_str(mimeinfo->type,
 638                                                      mimeinfo->subtype);
 639         for (cur = renderer_list ; cur != NULL ; cur = cur->next) {
 640                 struct ContentRenderer * cr;
 641
 642                 cr = cur->data;
 643                 if (g_strcasecmp(cr->content_type, content_type) == 0) {
 644                         renderer = cr;
 645                         break;
 646                 }
 647         }
 648         g_free(content_type);
 649
 650         if (renderer != NULL) {
 651                 FILE * p;
 652                 int oldout;
 653
 654                 oldout = dup(1);
 655
 656                 dup2(fileno(outfp), 1);
 657
 658                 p = popen(renderer->renderer, "w");
 659                 if (p != NULL) {
 660                         size_t count;
 661
 662                         while ((count =
 663                                 fread(buf, sizeof(char), sizeof(buf),
 664                                       tmpfp)) > 0)
 665                                 fwrite(buf, sizeof(char), count, p);
 666                         pclose(p);
 667                 }
 668
 669                 dup2(oldout, 1);
 670         } else if (mimeinfo->type == MIMETYPE_TEXT && !g_strcasecmp(mimeinfo->subtype, "html")) {
 671                 HTMLParser *parser;
 672                 CodeConverter *conv;
 673
 674                 conv = conv_code_converter_new(src_codeset);
 675                 parser = html_parser_new(tmpfp, conv);
 676                 while ((str = html_parse(parser)) != NULL) {
 677                         fputs(str, outfp);
 678                 }
 679                 html_parser_destroy(parser);
 680                 conv_code_converter_destroy(conv);
 681         } else if (mimeinfo->type == MIMETYPE_TEXT && !g_strcasecmp(mimeinfo->subtype, "enriched")) {
 682                 ERTFParser *parser;
 683                 CodeConverter *conv;
 684
 685                 conv = conv_code_converter_new(src_codeset);
 686                 parser = ertf_parser_new(tmpfp, conv);
 687                 while ((str = ertf_parse(parser)) != NULL) {
 688                         fputs(str, outfp);
 689                 }
 690                 ertf_parser_destroy(parser);
 691                 conv_code_converter_destroy(conv);
 692         } else if (mimeinfo->type == MIMETYPE_TEXT) {
 693                 while (fgets(buf, sizeof(buf), tmpfp) != NULL) {
 694                         str = conv_codeset_strdup(buf, src_codeset, NULL);
 695                         if (str) {
 696                                 fputs(str, outfp);
 697                                 g_free(str);
 698                         } else {
 699                                 conv_fail = TRUE;
 700                                 fputs(buf, outfp);
 701                         }
 702                 }
 703         }
 704
 705         if (conv_fail)
 706                 g_warning("procmime_get_text_content(): Code conversion failed.\n");
 707
 708         fclose(tmpfp);
 709         rewind(outfp);
 710         unlink(tmpfile);
 711         g_free(tmpfile);
 712
 713         return outfp;
 714 }
 715
 716 /* search the first text part of (multipart) MIME message,
 717    decode, convert it and output to outfp. */
 718 FILE *procmime_get_first_text_content(MsgInfo *msginfo)
 719 {
 720         FILE *outfp = NULL;
 721         MimeInfo *mimeinfo, *partinfo;
 722
 723         g_return_val_if_fail(msginfo != NULL, NULL);
 724
 725         mimeinfo = procmime_scan_message(msginfo);
 726         if (!mimeinfo) return NULL;
 727
 728         partinfo = mimeinfo;
 729         while (partinfo && partinfo->type != MIMETYPE_TEXT)
 730                 partinfo = procmime_mimeinfo_next(partinfo);
 731
 732         if (partinfo)
 733                 outfp = procmime_get_text_content(partinfo);
 734
 735         procmime_mimeinfo_free_all(mimeinfo);
 736
 737         return outfp;
 738 }
 739
 740 gboolean procmime_find_string_part(MimeInfo *mimeinfo, const gchar *filename,
 741                                    const gchar *str, StrFindFunc find_func)
 742 {
 743         FILE *outfp;
 744         gchar buf[BUFFSIZE];
 745
 746         g_return_val_if_fail(mimeinfo != NULL, FALSE);
 747         g_return_val_if_fail(mimeinfo->type == MIMETYPE_TEXT, FALSE);
 748         g_return_val_if_fail(str != NULL, FALSE);
 749         g_return_val_if_fail(find_func != NULL, FALSE);
 750
 751         outfp = procmime_get_text_content(mimeinfo);
 752
 753         if (!outfp)
 754                 return FALSE;
 755
 756         while (fgets(buf, sizeof(buf), outfp) != NULL) {
 757                 strretchomp(buf);
 758                 if (find_func(buf, str)) {
 759                         fclose(outfp);
 760                         return TRUE;
 761                 }
 762         }
 763
 764         fclose(outfp);
 765
 766         return FALSE;
 767 }
 768
 769 gboolean procmime_find_string(MsgInfo *msginfo, const gchar *str,
 770                               StrFindFunc find_func)
 771 {
 772         MimeInfo *mimeinfo;
 773         MimeInfo *partinfo;
 774         gchar *filename;
 775         gboolean found = FALSE;
 776
 777         g_return_val_if_fail(msginfo != NULL, FALSE);
 778         g_return_val_if_fail(str != NULL, FALSE);
 779         g_return_val_if_fail(find_func != NULL, FALSE);
 780
 781         filename = procmsg_get_message_file(msginfo);
 782         if (!filename) return FALSE;
 783         mimeinfo = procmime_scan_message(msginfo);
 784
 785         for (partinfo = mimeinfo; partinfo != NULL;
 786              partinfo = procmime_mimeinfo_next(partinfo)) {
 787                 if (partinfo->type == MIMETYPE_TEXT) {
 788                         if (procmime_find_string_part
 789                                 (partinfo, filename, str, find_func) == TRUE) {
 790                                 found = TRUE;
 791                                 break;
 792                         }
 793                 }
 794         }
 795
 796         procmime_mimeinfo_free_all(mimeinfo);
 797         g_free(filename);
 798
 799         return found;
 800 }
 801
 802 gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
 803 {
 804         static guint32 id = 0;
 805         gchar *base;
 806         gchar *filename;
 807         gchar f_prefix[10];
 808
 809         g_return_val_if_fail(mimeinfo != NULL, NULL);
 810
 811         g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++);
 812
 813         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_strcasecmp(mimeinfo->subtype, "html"))
 814                 base = "mimetmp.html";
 815         else {
 816                 const gchar *basetmp;
 817
 818                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
 819                 if (basetmp == NULL)
 820                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
 821                 if (basetmp == NULL)
 822                         basetmp = "mimetmp";
 823                 base = g_basename(basetmp);
 824                 if (*base == '\0') base = "mimetmp";
 825                 Xstrdup_a(base, base, return NULL);
 826                 subst_for_shellsafe_filename(base);
 827         }
 828
 829         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 830                                f_prefix, base, NULL);
 831
 832         return filename;
 833 }
 834
 835 static GList *mime_type_list = NULL;
 836
 837 gchar *procmime_get_mime_type(const gchar *filename)
 838 {
 839         static GHashTable *mime_type_table = NULL;
 840         MimeType *mime_type;
 841         const gchar *p;
 842         gchar *ext;
 843
 844         if (!mime_type_table) {
 845                 mime_type_table = procmime_get_mime_type_table();
 846                 if (!mime_type_table) return NULL;
 847         }
 848
 849         filename = g_basename(filename);
 850         p = strrchr(filename, '.');
 851         if (!p) return NULL;
 852
 853         Xstrdup_a(ext, p + 1, return NULL);
 854         g_strdown(ext);
 855         mime_type = g_hash_table_lookup(mime_type_table, ext);
 856         if (mime_type) {
 857                 gchar *str;
 858
 859                 str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
 860                                   NULL);
 861                 return str;
 862         }
 863
 864         return NULL;
 865 }
 866
 867 static guint procmime_str_hash(gconstpointer gptr)
 868 {
 869         guint hash_result = 0;
 870         const char *str;
 871
 872         for (str = gptr; str && *str; str++) {
 873                 if (isupper(*str)) hash_result += (*str + ' ');
 874                 else hash_result += *str;
 875         }
 876
 877         return hash_result;
 878 }
 879
 880 static gint procmime_str_equal(gconstpointer gptr1, gconstpointer gptr2)
 881 {
 882         const char *str1 = gptr1;
 883         const char *str2 = gptr2;
 884
 885         return !g_strcasecmp(str1, str2);
 886 }
 887
 888 static GHashTable *procmime_get_mime_type_table(void)
 889 {
 890         GHashTable *table = NULL;
 891         GList *cur;
 892         MimeType *mime_type;
 893         gchar **exts;
 894
 895         if (!mime_type_list) {
 896                 mime_type_list = procmime_get_mime_type_list();
 897                 if (!mime_type_list) return NULL;
 898         }
 899
 900         table = g_hash_table_new(procmime_str_hash, procmime_str_equal);
 901
 902         for (cur = mime_type_list; cur != NULL; cur = cur->next) {
 903                 gint i;
 904                 gchar *key;
 905
 906                 mime_type = (MimeType *)cur->data;
 907
 908                 if (!mime_type->extension) continue;
 909
 910                 exts = g_strsplit(mime_type->extension, " ", 16);
 911                 for (i = 0; exts[i] != NULL; i++) {
 912                         /* make the key case insensitive */
 913                         g_strdown(exts[i]);
 914                         /* use previously dup'd key on overwriting */
 915                         if (g_hash_table_lookup(table, exts[i]))
 916                                 key = exts[i];
 917                         else
 918                                 key = g_strdup(exts[i]);
 919                         g_hash_table_insert(table, key, mime_type);
 920                 }
 921                 g_strfreev(exts);
 922         }
 923
 924         return table;
 925 }
 926
 927 GList *procmime_get_mime_type_list(void)
 928 {
 929         GList *list = NULL;
 930         FILE *fp;
 931         gchar buf[BUFFSIZE];
 932         guchar *p;
 933         gchar *delim;
 934         MimeType *mime_type;
 935
 936         if (mime_type_list)
 937                 return mime_type_list;
 938
 939         if ((fp = fopen("/etc/mime.types", "rb")) == NULL) {
 940                 if ((fp = fopen(SYSCONFDIR "/mime.types", "rb")) == NULL) {
 941                         FILE_OP_ERROR(SYSCONFDIR "/mime.types", "fopen");
 942                         return NULL;
 943                 }
 944         }
 945
 946         while (fgets(buf, sizeof(buf), fp) != NULL) {
 947                 p = strchr(buf, '#');
 948                 if (p) *p = '\0';
 949                 g_strstrip(buf);
 950
 951                 p = buf;
 952                 while (*p && !isspace(*p)) p++;
 953                 if (*p) {
 954                         *p = '\0';
 955                         p++;
 956                 }
 957                 delim = strchr(buf, '/');
 958                 if (delim == NULL) continue;
 959                 *delim = '\0';
 960
 961                 mime_type = g_new(MimeType, 1);
 962                 mime_type->type = g_strdup(buf);
 963                 mime_type->sub_type = g_strdup(delim + 1);
 964
 965                 while (*p && isspace(*p)) p++;
 966                 if (*p)
 967                         mime_type->extension = g_strdup(p);
 968                 else
 969                         mime_type->extension = NULL;
 970
 971                 list = g_list_append(list, mime_type);
 972         }
 973
 974         fclose(fp);
 975
 976         if (!list)
 977                 g_warning("Can't read mime.types\n");
 978
 979         return list;
 980 }
 981
 982 EncodingType procmime_get_encoding_for_charset(const gchar *charset)
 983 {
 984         if (!charset)
 985                 return ENC_8BIT;
 986         else if (!g_strncasecmp(charset, "ISO-2022-", 9) ||
 987                  !g_strcasecmp(charset, "US-ASCII"))
 988                 return ENC_7BIT;
 989         else if (!g_strcasecmp(charset, "ISO-8859-5") ||
 990                  !g_strncasecmp(charset, "KOI8-", 5) ||
 991                  !g_strcasecmp(charset, "Windows-1251"))
 992                 return ENC_8BIT;
 993         else if (!g_strncasecmp(charset, "ISO-8859-", 9))
 994                 return ENC_QUOTED_PRINTABLE;
 995         else
 996                 return ENC_8BIT;
 997 }
 998
 999 EncodingType procmime_get_encoding_for_text_file(const gchar *file)
1000 {
1001         FILE *fp;
1002         guchar buf[BUFFSIZE];
1003         size_t len;
1004         size_t octet_chars = 0;
1005         size_t total_len = 0;
1006         gfloat octet_percentage;
1007
1008         if ((fp = fopen(file, "rb")) == NULL) {
1009                 FILE_OP_ERROR(file, "fopen");
1010                 return ENC_UNKNOWN;
1011         }
1012
1013         while ((len = fread(buf, sizeof(guchar), sizeof(buf), fp)) > 0) {
1014                 guchar *p;
1015                 gint i;
1016
1017                 for (p = buf, i = 0; i < len; ++p, ++i) {
1018                         if (*p & 0x80)
1019                                 ++octet_chars;
1020                 }
1021                 total_len += len;
1022         }
1023
1024         fclose(fp);
1025
1026         if (total_len > 0)
1027                 octet_percentage = (gfloat)octet_chars / (gfloat)total_len;
1028         else
1029                 octet_percentage = 0.0;
1030
1031         debug_print("procmime_get_encoding_for_text_file(): "
1032                     "8bit chars: %d / %d (%f%%)\n", octet_chars, total_len,
1033                     100.0 * octet_percentage);
1034
1035         if (octet_percentage > 0.20) {
1036                 debug_print("using BASE64\n");
1037                 return ENC_BASE64;
1038         } else if (octet_chars > 0) {
1039                 debug_print("using quoted-printable\n");
1040                 return ENC_QUOTED_PRINTABLE;
1041         } else {
1042                 debug_print("using 7bit\n");
1043                 return ENC_7BIT;
1044         }
1045 }
1046
1047 struct EncodingTable
1048 {
1049         gchar *str;
1050         EncodingType enc_type;
1051 };
1052
1053 struct EncodingTable encoding_table[] = {
1054         {"7bit", ENC_7BIT},
1055         {"8bit", ENC_8BIT},
1056         {"binary", ENC_BINARY},
1057         {"quoted-printable", ENC_QUOTED_PRINTABLE},
1058         {"base64", ENC_BASE64},
1059         {"x-uuencode", ENC_UNKNOWN},
1060         {NULL, ENC_UNKNOWN},
1061 };
1062
1063 const gchar *procmime_get_encoding_str(EncodingType encoding)
1064 {
1065         struct EncodingTable *enc_table;
1066
1067         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1068                 if (enc_table->enc_type == encoding)
1069                         return enc_table->str;
1070         }
1071         return NULL;
1072 }
1073
1074 /* --- NEW MIME STUFF --- */
1075 struct TypeTable
1076 {
1077         gchar *str;
1078         MimeMediaType type;
1079 };
1080
1081 static struct TypeTable mime_type_table[] = {
1082         {"text", MIMETYPE_TEXT},
1083         {"image", MIMETYPE_IMAGE},
1084         {"audio", MIMETYPE_AUDIO},
1085         {"video", MIMETYPE_VIDEO},
1086         {"application", MIMETYPE_APPLICATION},
1087         {"message", MIMETYPE_MESSAGE},
1088         {"multipart", MIMETYPE_MULTIPART},
1089         {NULL, 0},
1090 };
1091
1092 const gchar *procmime_get_media_type_str(MimeMediaType type)
1093 {
1094         struct TypeTable *type_table;
1095
1096         for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
1097                 if (type_table->type == type)
1098                         return type_table->str;
1099         }
1100         return NULL;
1101 }
1102
1103 MimeMediaType procmime_get_media_type(const gchar *str)
1104 {
1105         struct TypeTable *typetablearray;
1106
1107         for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++)
1108                 if (g_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0)
1109                         return typetablearray->type;
1110
1111         return MIMETYPE_UNKNOWN;
1112 }
1113
1114 /*!
1115  *\brief        Safe wrapper for content type string.
1116  *
1117  *\return       const gchar * Pointer to content type string.
1118  */
1119 gchar *procmime_get_content_type_str(MimeMediaType type,
1120                                            const char *subtype)
1121 {
1122         const gchar *type_str = NULL;
1123
1124         if (subtype == NULL || !(type_str = procmime_get_media_type_str(type)))
1125                 return g_strdup("unknown");
1126         return g_strdup_printf("%s/%s", type_str, subtype);
1127 }
1128
1129 void procmime_parse_mimepart(MimeInfo *parent,
1130                              gchar *content_type,
1131                              gchar *content_encoding,
1132                              gchar *content_description,
1133                              gchar *content_id,
1134                              gchar *content_disposition,
1135                              const gchar *filename,
1136                              guint offset,
1137                              guint length);
1138
1139 void procmime_parse_message_rfc822(MimeInfo *mimeinfo)
1140 {
1141         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1142                                 {"Content-Transfer-Encoding:",
1143                                                    NULL, FALSE},
1144                                 {"Content-Description:",
1145                                                    NULL, TRUE},
1146                                 {"Content-ID:",
1147                                                    NULL, TRUE},
1148                                 {"Content-Disposition:",
1149                                                    NULL, TRUE},
1150                                 {"MIME-Version:",
1151                                                    NULL, TRUE},
1152                                 {NULL,             NULL, FALSE}};
1153         guint content_start, i;
1154         FILE *fp;
1155         gint mime_major, mime_minor;
1156
1157         procmime_decode_content(mimeinfo);
1158
1159         fp = fopen(mimeinfo->data.filename, "rb");
1160         if (fp == NULL) {
1161                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1162                 return;
1163         }
1164         fseek(fp, mimeinfo->offset, SEEK_SET);
1165         procheader_get_header_fields(fp, hentry);
1166         if (hentry[0].body != NULL)
1167                 conv_unmime_header_overwrite(hentry[0].body);
1168         if (hentry[2].body != NULL)
1169                 conv_unmime_header_overwrite(hentry[2].body);
1170         if (hentry[4].body != NULL)
1171                 conv_unmime_header_overwrite(hentry[4].body);
1172         content_start = ftell(fp);
1173         fclose(fp);
1174
1175         if ((hentry[5].body != NULL) &&
1176             (sscanf(hentry[5].body, "%d.%d", &mime_major, &mime_minor) == 2) &&
1177             (mime_major == 1) && (mime_minor == 0)) {
1178                 procmime_parse_mimepart(mimeinfo,
1179                                         hentry[0].body, hentry[1].body,
1180                                         hentry[2].body, hentry[3].body,
1181                                         hentry[4].body,
1182                                         mimeinfo->data.filename, content_start,
1183                                         mimeinfo->length - (content_start - mimeinfo->offset));
1184         } else {
1185                 MimeInfo *subinfo;
1186
1187                 subinfo = procmime_mimeinfo_new();
1188                 subinfo->encoding_type = ENC_UNKNOWN;
1189                 subinfo->type = MIMETYPE_TEXT;
1190                 subinfo->subtype = g_strdup("plain");
1191                 subinfo->data.filename = g_strdup(mimeinfo->data.filename);
1192                 subinfo->offset = content_start;
1193                 subinfo->length = mimeinfo->length - (content_start - mimeinfo->offset);
1194
1195                 g_node_append(mimeinfo->node, subinfo->node);
1196         }
1197         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1198                 g_free(hentry[i].body);
1199                 hentry[i].body = NULL;
1200         }
1201 }
1202
1203 void procmime_parse_multipart(MimeInfo *mimeinfo)
1204 {
1205         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1206                                 {"Content-Transfer-Encoding:",
1207                                                    NULL, FALSE},
1208                                 {"Content-Description:",
1209                                                    NULL, TRUE},
1210                                 {"Content-ID:",
1211                                                    NULL, TRUE},
1212                                 {"Content-Disposition:",
1213                                                    NULL, TRUE},
1214                                 {NULL,             NULL, FALSE}};
1215         gchar *p;
1216         gchar *boundary;
1217         gint boundary_len = 0, lastoffset = -1, i;
1218         gchar buf[BUFFSIZE];
1219         FILE *fp;
1220
1221         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1222         if (!boundary)
1223                 return;
1224         boundary_len = strlen(boundary);
1225
1226         procmime_decode_content(mimeinfo);
1227
1228         fp = fopen(mimeinfo->data.filename, "rb");
1229         if (fp == NULL) {
1230                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1231                 return;
1232         }
1233         fseek(fp, mimeinfo->offset, SEEK_SET);
1234         while ((p = fgets(buf, sizeof(buf), fp)) != NULL) {
1235                 if (ftell(fp) > (mimeinfo->offset + mimeinfo->length))
1236                         break;
1237
1238                 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1239                         if (lastoffset != -1) {
1240                                 procmime_parse_mimepart(mimeinfo,
1241                                                         hentry[0].body, hentry[1].body,
1242                                                         hentry[2].body, hentry[3].body,
1243                                                         hentry[4].body,
1244                                                         mimeinfo->data.filename, lastoffset,
1245                                                         (ftell(fp) - strlen(buf)) - lastoffset - 1);
1246                         }
1247
1248                         if (buf[2 + boundary_len]     == '-' &&
1249                             buf[2 + boundary_len + 1] == '-')
1250                                 break;
1251
1252                         for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1253                                 g_free(hentry[i].body);
1254                                 hentry[i].body = NULL;
1255                         }
1256                         procheader_get_header_fields(fp, hentry);
1257                         if (hentry[0].body != NULL)
1258                                 conv_unmime_header_overwrite(hentry[0].body);
1259                         if (hentry[2].body != NULL)
1260                                 conv_unmime_header_overwrite(hentry[2].body);
1261                         if (hentry[4].body != NULL)
1262                                 conv_unmime_header_overwrite(hentry[4].body);
1263                         lastoffset = ftell(fp);
1264                 }
1265         }
1266         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1267                 g_free(hentry[i].body);
1268                 hentry[i].body = NULL;
1269         }
1270         fclose(fp);
1271 }
1272
1273 static void parse_parameters(const gchar *parameters, GHashTable *table)
1274 {
1275         gchar *params, *param, *next;
1276         GSList *convlist = NULL, *concatlist = NULL, *cur;
1277
1278         params = g_strdup(parameters);
1279         param = params;
1280         next = params;
1281         for (; next != NULL; param = next) {
1282                 gchar *attribute, *value, *tmp;
1283                 gint len;
1284                 gboolean convert = FALSE;
1285
1286                 next = strchr_with_skip_quote(param, '"', ';');
1287                 if (next != NULL) {
1288                         next[0] = '\0';
1289                         next++;
1290                 }
1291
1292                 g_strstrip(param);
1293
1294                 attribute = param;
1295                 value = strchr(attribute, '=');
1296                 if (value == NULL)
1297                         continue;
1298
1299                 value[0] = '\0';
1300                 value++;
1301
1302                 g_strdown(attribute);
1303
1304                 len = strlen(attribute);
1305                 if (attribute[len - 1] == '*') {
1306                         gchar *srcpos, *dstpos, *endpos;
1307
1308                         convert = TRUE;
1309                         attribute[len - 1] = '\0';
1310
1311                         srcpos = value;
1312                         dstpos = value;
1313                         endpos = value + strlen(value);
1314                         while (srcpos < endpos) {
1315                                 if (*srcpos != '%')
1316                                         *dstpos = *srcpos;
1317                                 else {
1318                                         guchar dstvalue;
1319
1320                                         if (!get_hex_value(&dstvalue, srcpos[1], srcpos[2]))
1321                                                 *dstpos = '?';
1322                                         else
1323                                                 *dstpos = dstvalue;
1324                                         srcpos += 2;
1325                                 }
1326                                 srcpos++;
1327                                 dstpos++;
1328                         }
1329                         *dstpos = '\0';
1330                 } else {
1331                         if (value[0] == '"')
1332                                 extract_quote(value, '"');
1333                         else if ((tmp = strchr(value, ' ')) != NULL)
1334                                 *tmp = '\0';
1335                 }
1336
1337                 if (strrchr(attribute, '*') != NULL) {
1338                         gchar *tmpattr;
1339
1340                         tmpattr = g_strdup(attribute);
1341                         tmp = strrchr(tmpattr, '*');
1342                         tmp[0] = '\0';
1343
1344                         if ((tmp[1] == '0') && (tmp[2] == '\0') &&
1345                             (g_slist_find_custom(concatlist, attribute, g_str_equal) == NULL))
1346                                 concatlist = g_slist_prepend(concatlist, g_strdup(tmpattr));
1347
1348                         if (convert && (g_slist_find_custom(convlist, attribute, g_str_equal) == NULL))
1349                                 convlist = g_slist_prepend(convlist, g_strdup(tmpattr));
1350
1351                         g_free(tmpattr);
1352                 } else if (convert) {
1353                         if (g_slist_find_custom(convlist, attribute, g_str_equal) == NULL)
1354                                 convlist = g_slist_prepend(convlist, g_strdup(attribute));
1355                 }
1356
1357                 if (g_hash_table_lookup(table, attribute) == NULL)
1358                         g_hash_table_insert(table, g_strdup(attribute), g_strdup(value));
1359         }
1360
1361         for (cur = concatlist; cur != NULL; cur = g_slist_next(cur)) {
1362                 gchar *attribute, *attrwnum, *partvalue;
1363                 gint n = 0;
1364                 GString *value;
1365
1366                 attribute = (gchar *) cur->data;
1367                 value = g_string_sized_new(64);
1368
1369                 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1370                 while ((partvalue = g_hash_table_lookup(table, attrwnum)) != NULL) {
1371                         g_string_append(value, partvalue);
1372
1373                         g_free(attrwnum);
1374                         n++;
1375                         attrwnum = g_strdup_printf("%s*%d", attribute, n);
1376                 }
1377                 g_free(attrwnum);
1378
1379                 g_hash_table_insert(table, g_strdup(attribute), g_strdup(value->str));
1380                 g_string_free(value, TRUE);
1381         }
1382         slist_free_strings(concatlist);
1383         g_slist_free(concatlist);
1384
1385         for (cur = convlist; cur != NULL; cur = g_slist_next(cur)) {
1386                 gchar *attribute, *key, *value;
1387                 gchar *charset, *lang, *oldvalue, *newvalue;
1388
1389                 attribute = (gchar *) cur->data;
1390                 if (!g_hash_table_lookup_extended(table, attribute, (gpointer *) &key, (gpointer *) &value))
1391                         continue;
1392
1393                 charset = value;
1394                 lang = strchr(charset, '\'');
1395                 if (lang == NULL)
1396                         continue;
1397                 lang[0] = '\0';
1398                 lang++;
1399                 oldvalue = strchr(lang, '\'');
1400                 if (oldvalue == NULL)
1401                         continue;
1402                 oldvalue[0] = '\0';
1403                 oldvalue++;
1404
1405                 newvalue = conv_codeset_strdup(oldvalue, charset, conv_get_current_charset_str());
1406
1407                 g_hash_table_remove(table, attribute);
1408                 g_free(key);
1409                 g_free(value);
1410
1411                 g_hash_table_insert(table, g_strdup(attribute), newvalue);
1412         }
1413         slist_free_strings(convlist);
1414         g_slist_free(convlist);
1415
1416         g_free(params);
1417 }
1418
1419 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1420 {
1421         g_return_if_fail(content_type != NULL);
1422         g_return_if_fail(mimeinfo != NULL);
1423
1424         /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1425          * if it's not available we use the default Content-Type */
1426         if ((content_type[0] == '\0') || (strchr(content_type, '/') == NULL)) {
1427                 mimeinfo->type = MIMETYPE_TEXT;
1428                 mimeinfo->subtype = g_strdup("plain");
1429                 if (g_hash_table_lookup(mimeinfo->typeparameters,
1430                                        "charset") == NULL)
1431                         g_hash_table_insert(mimeinfo->typeparameters,
1432                                             g_strdup("charset"),
1433                                             g_strdup("us-ascii"));
1434         } else {
1435                 gchar *type, *subtype, *params;
1436
1437                 type = g_strdup(content_type);
1438                 subtype = strchr(type, '/') + 1;
1439                 *(subtype - 1) = '\0';
1440                 if ((params = strchr(subtype, ';')) != NULL) {
1441                         params[0] = '\0';
1442                         params++;
1443                 }
1444
1445                 mimeinfo->type = procmime_get_media_type(type);
1446                 mimeinfo->subtype = g_strdup(subtype);
1447
1448                 /* Get mimeinfo->typeparameters */
1449                 if (params != NULL)
1450                         parse_parameters(params, mimeinfo->typeparameters);
1451
1452                 g_free(type);
1453         }
1454 }
1455
1456 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1457 {
1458         gchar *tmp, *params;
1459
1460         g_return_if_fail(content_disposition != NULL);
1461         g_return_if_fail(mimeinfo != NULL);
1462
1463         tmp = g_strdup(content_disposition);
1464         if ((params = strchr(tmp, ';')) != NULL) {
1465                 params[0] = '\0';
1466                 params++;
1467         }
1468         g_strstrip(tmp);
1469
1470         if (!g_strcasecmp(tmp, "inline"))
1471                 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1472         else if (!g_strcasecmp(tmp, "attachment"))
1473                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1474         else
1475                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1476
1477         if (params != NULL)
1478                 parse_parameters(params, mimeinfo->dispositionparameters);
1479
1480         g_free(tmp);
1481 }
1482
1483
1484 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1485 {
1486         struct EncodingTable *enc_table;
1487
1488         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1489                 if (g_strcasecmp(enc_table->str, content_encoding) == 0) {
1490                         mimeinfo->encoding_type = enc_table->enc_type;
1491                         return;
1492                 }
1493         }
1494         mimeinfo->encoding_type = ENC_UNKNOWN;
1495         return;
1496 }
1497
1498 void procmime_parse_mimepart(MimeInfo *parent,
1499                              gchar *content_type,
1500                              gchar *content_encoding,
1501                              gchar *content_description,
1502                              gchar *content_id,
1503                              gchar *content_disposition,
1504                              const gchar *filename,
1505                              guint offset,
1506                              guint length)
1507 {
1508         MimeInfo *mimeinfo;
1509
1510         /* Create MimeInfo */
1511         mimeinfo = procmime_mimeinfo_new();
1512         mimeinfo->content = MIMECONTENT_FILE;
1513         if (parent != NULL)
1514                 g_node_append(parent->node, mimeinfo->node);
1515         mimeinfo->data.filename = g_strdup(filename);
1516         mimeinfo->offset = offset;
1517         mimeinfo->length = length;
1518
1519         if (content_type != NULL) {
1520                 procmime_parse_content_type(content_type, mimeinfo);
1521         } else {
1522                 mimeinfo->type = MIMETYPE_TEXT;
1523                 mimeinfo->subtype = g_strdup("plain");
1524                 if (g_hash_table_lookup(mimeinfo->typeparameters,
1525                                        "charset") == NULL)
1526                         g_hash_table_insert(mimeinfo->typeparameters, g_strdup("charset"), g_strdup("us-ascii"));
1527         }
1528
1529         if (content_encoding != NULL) {
1530                 procmime_parse_content_encoding(content_encoding, mimeinfo);
1531         } else {
1532                 mimeinfo->encoding_type = ENC_UNKNOWN;
1533         }
1534
1535         if (content_description != NULL)
1536                 mimeinfo->description = g_strdup(content_description);
1537         else
1538                 mimeinfo->description = NULL;
1539
1540         if (content_id != NULL)
1541                 mimeinfo->id = g_strdup(content_id);
1542         else
1543                 mimeinfo->id = NULL;
1544
1545         if (content_disposition != NULL)
1546                 procmime_parse_content_disposition(content_disposition, mimeinfo);
1547         else
1548                 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
1549
1550         /* Call parser for mime type */
1551         switch (mimeinfo->type) {
1552                 case MIMETYPE_MESSAGE:
1553                         if (g_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
1554                                 procmime_parse_message_rfc822(mimeinfo);
1555                         }
1556                         break;
1557
1558                 case MIMETYPE_MULTIPART:
1559                         procmime_parse_multipart(mimeinfo);
1560                         break;
1561
1562                 default:
1563                         break;
1564         }
1565 }
1566
1567 static gchar *typenames[] = {
1568     "text",
1569     "image",
1570     "audio",
1571     "video",
1572     "application",
1573     "message",
1574     "multipart",
1575     "unknown",
1576 };
1577
1578 static gboolean output_func(GNode *node, gpointer data)
1579 {
1580         guint i, depth;
1581         MimeInfo *mimeinfo = (MimeInfo *) node->data;
1582
1583         depth = g_node_depth(node);
1584         for (i = 0; i < depth; i++)
1585                 printf("    ");
1586         printf("%s/%s (offset:%d length:%d encoding: %d)\n", typenames[mimeinfo->type], mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
1587
1588         return FALSE;
1589 }
1590
1591 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
1592 {
1593         g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
1594 }
1595
1596 MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset)
1597 {
1598         MimeInfo *mimeinfo;
1599         struct stat buf;
1600
1601         stat(filename, &buf);
1602
1603         mimeinfo = procmime_mimeinfo_new();
1604         mimeinfo->content = MIMECONTENT_FILE;
1605         mimeinfo->encoding_type = ENC_UNKNOWN;
1606         mimeinfo->type = MIMETYPE_MESSAGE;
1607         mimeinfo->subtype = g_strdup("rfc822");
1608         mimeinfo->data.filename = g_strdup(filename);
1609         mimeinfo->offset = offset;
1610         mimeinfo->length = buf.st_size - offset;
1611
1612         procmime_parse_message_rfc822(mimeinfo);
1613         if (debug_get_mode())
1614                 output_mime_structure(mimeinfo, 0);
1615
1616         return mimeinfo;
1617 }
1618
1619 MimeInfo *procmime_scan_file(const gchar *filename)
1620 {
1621         MimeInfo *mimeinfo;
1622
1623         g_return_val_if_fail(filename != NULL, NULL);
1624
1625         mimeinfo = procmime_scan_file_with_offset(filename, 0);
1626
1627         return mimeinfo;
1628 }
1629
1630 MimeInfo *procmime_scan_queue_file(const gchar *filename)
1631 {
1632         FILE *fp;
1633         MimeInfo *mimeinfo;
1634         gchar buf[BUFFSIZE];
1635         gint offset = 0;
1636
1637         g_return_val_if_fail(filename != NULL, NULL);
1638
1639         /* Open file */
1640         if ((fp = fopen(filename, "rb")) == NULL)
1641                 return NULL;
1642         /* Skip queue header */
1643         while (fgets(buf, sizeof(buf), fp) != NULL)
1644                 if (buf[0] == '\r' || buf[0] == '\n') break;
1645         offset = ftell(fp);
1646         fclose(fp);
1647
1648         mimeinfo = procmime_scan_file_with_offset(filename, offset);
1649
1650         return mimeinfo;
1651 }
1652
1653 typedef enum {
1654     ENC_AS_TOKEN,
1655     ENC_AS_QUOTED_STRING,
1656     ENC_AS_EXTENDED,
1657 } EncodeAs;
1658
1659 typedef struct _ParametersData {
1660         FILE *fp;
1661         guint len;
1662 } ParametersData;
1663
1664 static void write_parameters(gpointer key, gpointer value, gpointer user_data)
1665 {
1666         gchar *param = key;
1667         gchar *val = value, *valpos;
1668         ParametersData *pdata = (ParametersData *)user_data;
1669         GString *buf = g_string_new("");
1670
1671         EncodeAs encas = ENC_AS_TOKEN;
1672
1673         for (valpos = val; *valpos != 0; valpos++) {
1674                 if (!IS_ASCII(*valpos)) {
1675                         encas = ENC_AS_EXTENDED;
1676                         break;
1677                 }
1678
1679                 /* CTLs */
1680                 if (((*valpos >= 0) && (*valpos < 037)) || (*valpos == 0177)) {
1681                         encas = ENC_AS_QUOTED_STRING;
1682                         continue;
1683                 }
1684
1685                 /* tspecials + SPACE */
1686                 switch (*valpos) {
1687                 case ' ':
1688                 case '(':
1689                 case ')':
1690                 case '<':
1691                 case '>':
1692                 case '@':
1693                 case ',':
1694                 case ';':
1695                 case ':':
1696                 case '\\':
1697                 case '"':
1698                 case '/':
1699                 case '[':
1700                 case ']':
1701                 case '?':
1702                 case '=':
1703                         encas = ENC_AS_QUOTED_STRING;
1704                         continue;
1705                 }
1706         }
1707
1708         switch (encas) {
1709         case ENC_AS_TOKEN:
1710                 g_string_sprintfa(buf, "%s=%s", param, val);
1711                 break;
1712
1713         case ENC_AS_QUOTED_STRING:
1714                 g_string_sprintfa(buf, "%s=\"%s\"", param, val);
1715                 break;
1716
1717         case ENC_AS_EXTENDED:
1718                 g_string_sprintfa(buf, "%s*=%s''", param,
1719                         conv_get_current_charset_str());
1720                 for (valpos = val; *valpos != '\0'; valpos++) {
1721                         if (IS_ASCII(*valpos) && isalnum(*valpos)) {
1722                                 g_string_sprintfa(buf, "%c", *valpos);
1723                         } else {
1724                                 gchar hexstr[3] = "XX";
1725                                 get_hex_str(hexstr, *valpos);
1726                                 g_string_sprintfa(buf, "%%%s", hexstr);
1727                         }
1728                 }
1729                 break;
1730         }
1731
1732         if (buf->str && strlen(buf->str)) {
1733                 if (pdata->len + strlen(buf->str) + 2 > 76) {
1734                         fprintf(pdata->fp, ";\n %s", buf->str);
1735                         pdata->len = strlen(buf->str) + 1;
1736                 } else {
1737                         fprintf(pdata->fp, "; %s", buf->str);
1738                         pdata->len += strlen(buf->str) + 2;
1739                 }
1740         }
1741         g_string_free(buf, TRUE);
1742 }
1743
1744 void procmime_write_mime_header(MimeInfo *mimeinfo, FILE *fp)
1745 {
1746         struct TypeTable *type_table;
1747         ParametersData *pdata = g_new0(ParametersData, 1);
1748         debug_print("procmime_write_mime_header\n");
1749
1750         pdata->fp = fp;
1751
1752         for (type_table = mime_type_table; type_table->str != NULL; type_table++)
1753                 if (mimeinfo->type == type_table->type) {
1754                         gchar *buf = g_strdup_printf(
1755                                 "Content-Type: %s/%s", type_table->str, mimeinfo->subtype);
1756                         fprintf(fp, buf);
1757                         pdata->len = strlen(buf);
1758                         g_free(buf);
1759                         break;
1760                 }
1761         g_hash_table_foreach(mimeinfo->typeparameters, write_parameters, pdata);
1762         g_free(pdata);
1763
1764         fprintf(fp, "\n");
1765
1766         if (mimeinfo->encoding_type != ENC_UNKNOWN)
1767                 fprintf(fp, "Content-Transfer-Encoding: %s\n", procmime_get_encoding_str(mimeinfo->encoding_type));
1768
1769         if (mimeinfo->description != NULL)
1770                 fprintf(fp, "Content-Description: %s\n", mimeinfo->description);
1771
1772         if (mimeinfo->id != NULL)
1773                 fprintf(fp, "Content-ID: %s\n", mimeinfo->id);
1774
1775         if (mimeinfo->disposition != DISPOSITIONTYPE_UNKNOWN) {
1776                 ParametersData *pdata = g_new0(ParametersData, 1);
1777                 gchar *buf = NULL;
1778                 if (mimeinfo->disposition == DISPOSITIONTYPE_INLINE)
1779                         buf = g_strdup("Content-Disposition: inline");
1780                 else if (mimeinfo->disposition == DISPOSITIONTYPE_ATTACHMENT)
1781                         buf = g_strdup("Content-Disposition: attachment");
1782                 else
1783                         buf = g_strdup("Content-Disposition: unknown");
1784
1785                 fprintf(fp, "%s", buf);
1786                 pdata->len = strlen(buf);
1787                 g_free(buf);
1788
1789                 pdata->fp = fp;
1790                 g_hash_table_foreach(mimeinfo->dispositionparameters, write_parameters, pdata);
1791                 g_free(pdata);
1792                 fprintf(fp, "\n");
1793         }
1794
1795         fprintf(fp, "\n");
1796 }
1797
1798 gint procmime_write_message_rfc822(MimeInfo *mimeinfo, FILE *fp)
1799 {
1800         FILE *infp;
1801         GNode *childnode;
1802         MimeInfo *child;
1803         gchar buf[BUFFSIZE];
1804         gboolean skip = FALSE;;
1805
1806         debug_print("procmime_write_message_rfc822\n");
1807
1808         /* write header */
1809         switch (mimeinfo->content) {
1810         case MIMECONTENT_FILE:
1811                 if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
1812                         FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1813                         return -1;
1814                 }
1815                 fseek(infp, mimeinfo->offset, SEEK_SET);
1816                 while (fgets(buf, sizeof(buf), infp) == buf) {
1817                         if (buf[0] == '\n' && buf[1] == '\0')
1818                                 break;
1819                         if (skip && (buf[0] == ' ' || buf[0] == '\t'))
1820                                 continue;
1821                         if (g_strncasecmp(buf, "Mime-Version:", 13) == 0 ||
1822                             g_strncasecmp(buf, "Content-Type:", 13) == 0 ||
1823                             g_strncasecmp(buf, "Content-Transfer-Encoding:", 26) == 0 ||
1824                             g_strncasecmp(buf, "Content-Description:", 20) == 0 ||
1825                             g_strncasecmp(buf, "Content-ID:", 11) == 0 ||
1826                             g_strncasecmp(buf, "Content-Disposition:", 20) == 0) {
1827                                 skip = TRUE;
1828                                 continue;
1829                         }
1830                         fwrite(buf, sizeof(gchar), strlen(buf), fp);
1831                         skip = FALSE;
1832                 }
1833                 fclose(infp);
1834                 break;
1835
1836         case MIMECONTENT_MEM:
1837                 fwrite(mimeinfo->data.mem, strlen(mimeinfo->data.mem), sizeof(gchar), fp);
1838                 break;
1839
1840         default:
1841                 break;
1842         }
1843
1844         childnode = mimeinfo->node->children;
1845         if (childnode == NULL)
1846                 return -1;
1847
1848         child = (MimeInfo *) childnode->data;
1849         fprintf(fp, "Mime-Version: 1.0\n");
1850         procmime_write_mime_header(child, fp);
1851         return procmime_write_mimeinfo(child, fp);
1852 }
1853
1854 gint procmime_write_multipart(MimeInfo *mimeinfo, FILE *fp)
1855 {
1856         FILE *infp;
1857         GNode *childnode;
1858         gchar *boundary, *str, *str2;
1859         gchar buf[BUFFSIZE];
1860         gboolean firstboundary;
1861
1862         debug_print("procmime_write_multipart\n");
1863
1864         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1865
1866         switch (mimeinfo->content) {
1867         case MIMECONTENT_FILE:
1868                 if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
1869                         FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1870                         return -1;
1871                 }
1872                 fseek(infp, mimeinfo->offset, SEEK_SET);
1873                 while (fgets(buf, sizeof(buf), infp) == buf) {
1874                         if (IS_BOUNDARY(buf, boundary, strlen(boundary)))
1875                                 break;
1876                         fwrite(buf, sizeof(gchar), strlen(buf), fp);
1877                 }
1878                 fclose(infp);
1879                 break;
1880
1881         case MIMECONTENT_MEM:
1882                 str = g_strdup(mimeinfo->data.mem);
1883                 if (((str2 = strstr(str, boundary)) != NULL) && ((str2 - str) >= 2) &&
1884                     (*(str2 - 1) == '-') && (*(str2 - 2) == '-'))
1885                         *(str2 - 2) = '\0';
1886                 fwrite(str, strlen(str), sizeof(gchar), fp);
1887                 g_free(str);
1888                 break;
1889
1890         default:
1891                 break;
1892         }
1893
1894         childnode = mimeinfo->node->children;
1895         firstboundary = TRUE;
1896         while (childnode != NULL) {
1897                 MimeInfo *child = childnode->data;
1898
1899                 if (firstboundary)
1900                         firstboundary = FALSE;
1901                 else
1902                         fprintf(fp, "\n");
1903                 fprintf(fp, "--%s\n", boundary);
1904
1905                 procmime_write_mime_header(child, fp);
1906                 if (procmime_write_mimeinfo(child, fp) < 0)
1907                         return -1;
1908
1909                 childnode = g_node_next_sibling(childnode);
1910         }
1911         fprintf(fp, "\n--%s--\n", boundary);
1912
1913         return 0;
1914 }
1915
1916 gint procmime_write_mimeinfo(MimeInfo *mimeinfo, FILE *fp)
1917 {
1918         FILE *infp;
1919
1920         debug_print("procmime_write_mimeinfo\n");
1921
1922         if (G_NODE_IS_LEAF(mimeinfo->node)) {
1923                 switch (mimeinfo->content) {
1924                 case MIMECONTENT_FILE:
1925                         if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
1926                                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1927                                 return -1;
1928                         }
1929                         copy_file_part_to_fp(infp, mimeinfo->offset, mimeinfo->length, fp);
1930                         fclose(infp);
1931                         return 0;
1932
1933                 case MIMECONTENT_MEM:
1934                         fwrite(mimeinfo->data.mem, strlen(mimeinfo->data.mem), sizeof(gchar), fp);
1935                         return 0;
1936
1937                 default:
1938                         return 0;
1939                 }
1940         } else {
1941                 /* Call writer for mime type */
1942                 switch (mimeinfo->type) {
1943                 case MIMETYPE_MESSAGE:
1944                         if (g_strcasecmp(mimeinfo->subtype, "rfc822") == 0)
1945                                 return procmime_write_message_rfc822(mimeinfo, fp);
1946                         break;
1947
1948                 case MIMETYPE_MULTIPART:
1949                         return procmime_write_multipart(mimeinfo, fp);
1950
1951                 default:
1952                         break;
1953                 }
1954
1955                 return -1;
1956         }
1957
1958         return 0;
1959 }