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
  49 #include "prefs_gtk.h"
  50
  51 static GHashTable *procmime_get_mime_type_table (void);
  52
  53 MimeInfo *procmime_mimeinfo_new(void)
  54 {
  55         MimeInfo *mimeinfo;
  56
  57         mimeinfo = g_new0(MimeInfo, 1);
  58         mimeinfo->content        = MIMECONTENT_EMPTY;
  59         mimeinfo->data.filename  = NULL;
  60
  61         mimeinfo->type           = MIMETYPE_UNKNOWN;
  62         mimeinfo->encoding_type  = ENC_UNKNOWN;
  63         mimeinfo->typeparameters = g_hash_table_new(g_str_hash, g_str_equal);
  64
  65         mimeinfo->disposition    = DISPOSITIONTYPE_UNKNOWN;
  66         mimeinfo->dispositionparameters
  67                                  = g_hash_table_new(g_str_hash, g_str_equal);
  68
  69         mimeinfo->node           = g_node_new(mimeinfo);
  70
  71         return mimeinfo;
  72 }
  73
  74 static gboolean procmime_mimeinfo_parameters_destroy(gpointer key, gpointer value, gpointer user_data)
  75 {
  76         g_free(key);
  77         g_free(value);
  78
  79         return TRUE;
  80 }
  81
  82 static gchar *forced_charset = NULL;
  83
  84 void procmime_force_charset(const gchar *str)
  85 {
  86         g_free(forced_charset);
  87         forced_charset = NULL;
  88         if (str)
  89                 forced_charset = g_strdup(str);
  90 }
  91
  92 static EncodingType forced_encoding = 0;
  93
  94 void procmime_force_encoding(EncodingType encoding)
  95 {
  96         forced_encoding = encoding;
  97 }
  98
  99 static gboolean free_func(GNode *node, gpointer data)
 100 {
 101         MimeInfo *mimeinfo = (MimeInfo *) node->data;
 102
 103         switch (mimeinfo->content) {
 104         case MIMECONTENT_FILE:
 105                 if (mimeinfo->tmp)
 106                         unlink(mimeinfo->data.filename);
 107                 g_free(mimeinfo->data.filename);
 108                 break;
 109
 110         case MIMECONTENT_MEM:
 111                 if (mimeinfo->tmp)
 112                         g_free(mimeinfo->data.mem);
 113         default:
 114                 break;
 115         }
 116
 117         g_free(mimeinfo->subtype);
 118         g_free(mimeinfo->description);
 119         g_free(mimeinfo->id);
 120
 121         g_hash_table_foreach_remove(mimeinfo->typeparameters,
 122                 procmime_mimeinfo_parameters_destroy, NULL);
 123         g_hash_table_destroy(mimeinfo->typeparameters);
 124         g_hash_table_foreach_remove(mimeinfo->dispositionparameters,
 125                 procmime_mimeinfo_parameters_destroy, NULL);
 126         g_hash_table_destroy(mimeinfo->dispositionparameters);
 127
 128         if (mimeinfo->privacy)
 129                 privacy_free_privacydata(mimeinfo->privacy);
 130
 131         g_free(mimeinfo);
 132
 133         return FALSE;
 134 }
 135
 136 void procmime_mimeinfo_free_all(MimeInfo *mimeinfo)
 137 {
 138         GNode *node;
 139
 140         if (!mimeinfo)
 141                 return;
 142
 143         node = mimeinfo->node;
 144         g_node_traverse(node, G_IN_ORDER, G_TRAVERSE_ALL, -1, free_func, NULL);
 145
 146         g_node_destroy(node);
 147 }
 148
 149 #if 0 /* UNUSED */
 150 MimeInfo *procmime_mimeinfo_insert(MimeInfo *parent, MimeInfo *mimeinfo)
 151 {
 152         MimeInfo *child = parent->children;
 153
 154         if (!child)
 155                 parent->children = mimeinfo;
 156         else {
 157                 while (child->next != NULL)
 158                         child = child->next;
 159
 160                 child->next = mimeinfo;
 161         }
 162
 163         mimeinfo->parent = parent;
 164         mimeinfo->level = parent->level + 1;
 165
 166         return mimeinfo;
 167 }
 168
 169 void procmime_mimeinfo_replace(MimeInfo *old, MimeInfo *new)
 170 {
 171         MimeInfo *parent = old->parent;
 172         MimeInfo *child;
 173
 174         g_return_if_fail(parent != NULL);
 175         g_return_if_fail(new->next == NULL);
 176
 177         for (child = parent->children; child && child != old;
 178              child = child->next)
 179                 ;
 180         if (!child) {
 181                 g_warning("oops: parent can't find it's own child");
 182                 return;
 183         }
 184         procmime_mimeinfo_free_all(old);
 185
 186         if (child == parent->children) {
 187                 new->next = parent->children->next;
 188                 parent->children = new;
 189         } else {
 190                 new->next = child->next;
 191                 child = new;
 192         }
 193 }
 194 #endif
 195
 196 MimeInfo *procmime_mimeinfo_parent(MimeInfo *mimeinfo)
 197 {
 198         g_return_val_if_fail(mimeinfo != NULL, NULL);
 199         g_return_val_if_fail(mimeinfo->node != NULL, NULL);
 200
 201         if (mimeinfo->node->parent == NULL)
 202                 return NULL;
 203         return (MimeInfo *) mimeinfo->node->parent->data;
 204 }
 205
 206 MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
 207 {
 208         g_return_val_if_fail(mimeinfo != NULL, NULL);
 209         g_return_val_if_fail(mimeinfo->node != NULL, NULL);
 210
 211         if (mimeinfo->node->children)
 212                 return (MimeInfo *) mimeinfo->node->children->data;
 213         if (mimeinfo->node->next)
 214                 return (MimeInfo *) mimeinfo->node->next->data;
 215
 216         if (mimeinfo->node->parent == NULL)
 217                 return NULL;
 218
 219         while (mimeinfo->node->parent != NULL) {
 220                 mimeinfo = (MimeInfo *) mimeinfo->node->parent->data;
 221                 if (mimeinfo->node->next)
 222                         return (MimeInfo *) mimeinfo->node->next->data;
 223         }
 224
 225         return NULL;
 226 }
 227
 228 MimeInfo *procmime_scan_message(MsgInfo *msginfo)
 229 {
 230         gchar *filename;
 231         MimeInfo *mimeinfo;
 232
 233         filename = procmsg_get_message_file(msginfo);
 234         if (!filename)
 235                 return NULL;
 236         if (msginfo->folder->stype != F_QUEUE &&
 237             msginfo->folder->stype != F_DRAFT)
 238                 mimeinfo = procmime_scan_file(filename);
 239         else
 240                 mimeinfo = procmime_scan_queue_file(filename);
 241         g_free(filename);
 242
 243         return mimeinfo;
 244 }
 245
 246 enum
 247 {
 248         H_CONTENT_TRANSFER_ENCODING = 0,
 249         H_CONTENT_TYPE              = 1,
 250         H_CONTENT_DISPOSITION       = 2,
 251         H_CONTENT_DESCRIPTION       = 3,
 252         H_SUBJECT                   = 4
 253 };
 254
 255 const gchar *procmime_mimeinfo_get_parameter(MimeInfo *mimeinfo, const gchar *name)
 256 {
 257         const gchar *value;
 258
 259         g_return_val_if_fail(mimeinfo != NULL, NULL);
 260         g_return_val_if_fail(name != NULL, NULL);
 261
 262         value = g_hash_table_lookup(mimeinfo->dispositionparameters, name);
 263         if (value == NULL)
 264                 value = g_hash_table_lookup(mimeinfo->typeparameters, name);
 265
 266         return value;
 267 }
 268
 269 gboolean procmime_decode_content(MimeInfo *mimeinfo)
 270 {
 271         gchar buf[BUFFSIZE];
 272         gint readend;
 273         gchar *tmpfilename;
 274         FILE *outfp, *infp;
 275         struct stat statbuf;
 276
 277         EncodingType encoding = forced_encoding
 278                                 ? forced_encoding
 279                                 : mimeinfo->encoding_type;
 280
 281         g_return_val_if_fail(mimeinfo != NULL, FALSE);
 282
 283         if (encoding == ENC_UNKNOWN ||
 284             encoding == ENC_BINARY)
 285                 return TRUE;
 286
 287         infp = fopen(mimeinfo->data.filename, "rb");
 288         if (!infp) {
 289                 perror("fopen");
 290                 return FALSE;
 291         }
 292         fseek(infp, mimeinfo->offset, SEEK_SET);
 293
 294         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &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         struct stat statbuf;
 374
 375         if (mimeinfo->encoding_type != ENC_UNKNOWN &&
 376             mimeinfo->encoding_type != ENC_BINARY &&
 377             mimeinfo->encoding_type != ENC_7BIT &&
 378             mimeinfo->encoding_type != ENC_8BIT)
 379                 if(!procmime_decode_content(mimeinfo))
 380                         return FALSE;
 381
 382         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 383         if (!outfp) {
 384                 perror("tmpfile");
 385                 return FALSE;
 386         }
 387
 388         if (mimeinfo->content == MIMECONTENT_FILE) {
 389                 if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
 390                         g_warning("Can't open file %s\n", mimeinfo->data.filename);
 391                         return FALSE;
 392                 }
 393         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 394                 infp = str_open_as_stream(mimeinfo->data.mem);
 395                 if (infp == NULL)
 396                         return FALSE;
 397         }
 398
 399         if (encoding == ENC_BASE64) {
 400                 gchar inbuf[B64_LINE_SIZE], outbuf[B64_BUFFSIZE];
 401
 402                 while ((len = fread(inbuf, sizeof(gchar),
 403                                     B64_LINE_SIZE, infp))
 404                        == B64_LINE_SIZE) {
 405                         base64_encode(outbuf, inbuf, B64_LINE_SIZE);
 406                         fputs(outbuf, outfp);
 407                         fputc('\n', outfp);
 408                 }
 409                 if (len > 0 && feof(infp)) {
 410                         base64_encode(outbuf, inbuf, len);
 411                         fputs(outbuf, outfp);
 412                         fputc('\n', outfp);
 413                 }
 414         } else if (encoding == ENC_QUOTED_PRINTABLE) {
 415                 gchar inbuf[BUFFSIZE], outbuf[BUFFSIZE * 4];
 416
 417                 while (fgets(inbuf, sizeof(inbuf), infp) != NULL) {
 418                         qp_encode_line(outbuf, inbuf);
 419                         fputs(outbuf, outfp);
 420                 }
 421         } else {
 422                 gchar buf[BUFFSIZE];
 423
 424                 while (fgets(buf, sizeof(buf), infp) != NULL) {
 425                         strcrchomp(buf);
 426                         fputs(buf, outfp);
 427                 }
 428         }
 429
 430         fclose(outfp);
 431         fclose(infp);
 432
 433         if (mimeinfo->content == MIMECONTENT_FILE) {
 434                 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
 435                         unlink(mimeinfo->data.filename);
 436                 g_free(mimeinfo->data.filename);
 437         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 438                 if (mimeinfo->tmp && (mimeinfo->data.mem != NULL))
 439                         g_free(mimeinfo->data.mem);
 440         }
 441
 442         stat(tmpfilename, &statbuf);
 443         mimeinfo->content = MIMECONTENT_FILE;
 444         mimeinfo->data.filename = tmpfilename;
 445         mimeinfo->tmp = TRUE;
 446         mimeinfo->offset = 0;
 447         mimeinfo->length = statbuf.st_size;
 448         mimeinfo->encoding_type = encoding;
 449
 450         return TRUE;
 451 }
 452
 453 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
 454 {
 455         FILE *infp, *outfp;
 456         gchar buf[BUFFSIZE];
 457         gint restlength, readlength;
 458
 459         g_return_val_if_fail(outfile != NULL, -1);
 460         g_return_val_if_fail(mimeinfo != NULL, -1);
 461
 462         if (mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
 463                 return -1;
 464
 465         if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
 466                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
 467                 return -1;
 468         }
 469         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
 470                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
 471                 fclose(infp);
 472                 return -1;
 473         }
 474         if ((outfp = fopen(outfile, "wb")) == NULL) {
 475                 FILE_OP_ERROR(outfile, "fopen");
 476                 fclose(infp);
 477                 return -1;
 478         }
 479
 480         restlength = mimeinfo->length;
 481
 482         while ((restlength > 0) && ((readlength = fread(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
 483                 fwrite(buf, 1, readlength, outfp);
 484                 restlength -= readlength;
 485         }
 486
 487         fclose(infp);
 488         if (fclose(outfp) == EOF) {
 489                 FILE_OP_ERROR(outfile, "fclose");
 490                 unlink(outfile);
 491                 return -1;
 492         }
 493
 494         return 0;
 495 }
 496
 497 struct ContentRenderer {
 498         char * content_type;
 499         char * renderer;
 500 };
 501
 502 static GList * renderer_list = NULL;
 503
 504 static struct ContentRenderer *
 505 content_renderer_new(char * content_type, char * renderer)
 506 {
 507         struct ContentRenderer * cr;
 508
 509         cr = g_new(struct ContentRenderer, 1);
 510         if (cr == NULL)
 511                 return NULL;
 512
 513         cr->content_type = g_strdup(content_type);
 514         cr->renderer = g_strdup(renderer);
 515
 516         return cr;
 517 }
 518
 519 static void content_renderer_free(struct ContentRenderer * cr)
 520 {
 521         g_free(cr->content_type);
 522         g_free(cr->renderer);
 523         g_free(cr);
 524 }
 525
 526 void renderer_read_config(void)
 527 {
 528         gchar buf[BUFFSIZE];
 529         FILE * f;
 530         gchar * rcpath;
 531
 532         g_list_foreach(renderer_list, (GFunc) content_renderer_free, NULL);
 533         renderer_list = NULL;
 534
 535         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, RENDERER_RC, NULL);
 536         f = fopen(rcpath, "rb");
 537         g_free(rcpath);
 538
 539         if (f == NULL)
 540                 return;
 541
 542         while (fgets(buf, BUFFSIZE, f)) {
 543                 char * p;
 544                 struct ContentRenderer * cr;
 545
 546                 strretchomp(buf);
 547                 p = strchr(buf, ' ');
 548                 if (p == NULL)
 549                         continue;
 550                 * p = 0;
 551
 552                 cr = content_renderer_new(buf, p + 1);
 553                 if (cr == NULL)
 554                         continue;
 555
 556                 renderer_list = g_list_append(renderer_list, cr);
 557         }
 558
 559         fclose(f);
 560 }
 561
 562 void renderer_write_config(void)
 563 {
 564         gchar * rcpath;
 565         PrefFile *pfile;
 566         GList * cur;
 567
 568         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, RENDERER_RC, NULL);
 569
 570         if ((pfile = prefs_write_open(rcpath)) == NULL) {
 571                 g_warning("failed to write configuration to file\n");
 572                 g_free(rcpath);
 573                 return;
 574         }
 575
 576         g_free(rcpath);
 577
 578         for (cur = renderer_list ; cur != NULL ; cur = cur->next) {
 579                 struct ContentRenderer * renderer;
 580                 renderer = cur->data;
 581                 fprintf(pfile->fp, "%s %s\n", renderer->content_type,
 582                         renderer->renderer);
 583         }
 584
 585         if (prefs_file_close(pfile) < 0) {
 586                 g_warning("failed to write configuration to file\n");
 587                 return;
 588         }
 589 }
 590
 591 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
 592 {
 593         FILE *tmpfp, *outfp;
 594         const gchar *src_codeset;
 595         gboolean conv_fail = FALSE;
 596         gchar buf[BUFFSIZE];
 597         gchar *str;
 598         struct ContentRenderer * renderer;
 599         GList * cur;
 600         gchar *tmpfile, *content_type;
 601
 602         g_return_val_if_fail(mimeinfo != NULL, NULL);
 603
 604         if (!procmime_decode_content(mimeinfo))
 605                 return NULL;
 606
 607         tmpfile = procmime_get_tmp_file_name(mimeinfo);
 608         if (tmpfile == NULL)
 609                 return NULL;
 610
 611         if (procmime_get_part(tmpfile, mimeinfo) < 0) {
 612                 g_free(tmpfile);
 613                 return NULL;
 614         }
 615
 616         tmpfp = fopen(tmpfile, "rb");
 617         if (tmpfp == NULL) {
 618                 g_free(tmpfile);
 619                 return NULL;
 620         }
 621
 622         if ((outfp = my_tmpfile()) == NULL) {
 623                 perror("tmpfile");
 624                 fclose(tmpfp);
 625                 g_free(tmpfile);
 626                 return NULL;
 627         }
 628
 629         src_codeset = forced_charset
 630                       ? forced_charset :
 631                       procmime_mimeinfo_get_parameter(mimeinfo, "charset");
 632
 633         renderer = NULL;
 634
 635         content_type = procmime_get_content_type_str(mimeinfo->type,
 636                                                      mimeinfo->subtype);
 637         for (cur = renderer_list ; cur != NULL ; cur = cur->next) {
 638                 struct ContentRenderer * cr;
 639
 640                 cr = cur->data;
 641                 if (g_ascii_strcasecmp(cr->content_type, content_type) == 0) {
 642                         renderer = cr;
 643                         break;
 644                 }
 645         }
 646         g_free(content_type);
 647
 648         if (renderer != NULL) {
 649                 FILE * p;
 650                 int oldout;
 651
 652                 oldout = dup(1);
 653
 654                 dup2(fileno(outfp), 1);
 655
 656                 p = popen(renderer->renderer, "w");
 657                 if (p != NULL) {
 658                         size_t count;
 659
 660                         while ((count =
 661                                 fread(buf, sizeof(char), sizeof(buf),
 662                                       tmpfp)) > 0)
 663                                 fwrite(buf, sizeof(char), count, p);
 664                         pclose(p);
 665                 }
 666
 667                 dup2(oldout, 1);
 668 #warning FIXME_GTK2 HTML/RTF not yet utf8
 669 /* CodeConverter seems to have no effect here */
 670         } else if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_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_ascii_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, CS_UTF_8);
 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         const 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_ascii_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_utf8_collate(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_ascii_strncasecmp(charset, "ISO-2022-", 9) ||
 987                  !g_ascii_strcasecmp(charset, "US-ASCII"))
 988                 return ENC_7BIT;
 989         else if (!g_ascii_strcasecmp(charset, "ISO-8859-5") ||
 990                  !g_ascii_strncasecmp(charset, "KOI8-", 5) ||
 991                  !g_ascii_strcasecmp(charset, "Windows-1251"))
 992                 return ENC_8BIT;
 993         else if (!g_ascii_strncasecmp(charset, "ISO-8859-", 9))
 994                 return ENC_QUOTED_PRINTABLE;
 995         else
 996                 return ENC_8BIT;
 997 }
 998
 999 EncodingType procmime_get_encoding_for_file(const gchar *file)
1000 {
1001         FILE *fp;
1002         guchar buf[BUFSIZ];
1003         size_t len;
1004
1005         if ((fp = fopen(file, "rb")) == NULL) {
1006                 FILE_OP_ERROR(file, "fopen");
1007                 return ENC_UNKNOWN;
1008         }
1009
1010         while ((len = fread(buf, sizeof(gchar), sizeof(buf), fp)) > 0) {
1011                 guchar *p;
1012                 gint i;
1013
1014                 for (p = buf, i = 0; i < len; p++, i++) {
1015                         if (*p & 0x80) {
1016                                 fclose(fp);
1017                                 return ENC_BASE64;
1018                         }
1019                 }
1020         }
1021
1022         fclose(fp);
1023         return ENC_7BIT;
1024 }
1025
1026 struct EncodingTable
1027 {
1028         gchar *str;
1029         EncodingType enc_type;
1030 };
1031
1032 struct EncodingTable encoding_table[] = {
1033         {"7bit", ENC_7BIT},
1034         {"8bit", ENC_8BIT},
1035         {"binary", ENC_BINARY},
1036         {"quoted-printable", ENC_QUOTED_PRINTABLE},
1037         {"base64", ENC_BASE64},
1038         {"x-uuencode", ENC_UNKNOWN},
1039         {NULL, ENC_UNKNOWN},
1040 };
1041
1042 const gchar *procmime_get_encoding_str(EncodingType encoding)
1043 {
1044         struct EncodingTable *enc_table;
1045
1046         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1047                 if (enc_table->enc_type == encoding)
1048                         return enc_table->str;
1049         }
1050         return NULL;
1051 }
1052
1053 /* --- NEW MIME STUFF --- */
1054 struct TypeTable
1055 {
1056         gchar *str;
1057         MimeMediaType type;
1058 };
1059
1060 static struct TypeTable mime_type_table[] = {
1061         {"text", MIMETYPE_TEXT},
1062         {"image", MIMETYPE_IMAGE},
1063         {"audio", MIMETYPE_AUDIO},
1064         {"video", MIMETYPE_VIDEO},
1065         {"application", MIMETYPE_APPLICATION},
1066         {"message", MIMETYPE_MESSAGE},
1067         {"multipart", MIMETYPE_MULTIPART},
1068         {NULL, 0},
1069 };
1070
1071 const gchar *procmime_get_media_type_str(MimeMediaType type)
1072 {
1073         struct TypeTable *type_table;
1074
1075         for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
1076                 if (type_table->type == type)
1077                         return type_table->str;
1078         }
1079         return NULL;
1080 }
1081
1082 MimeMediaType procmime_get_media_type(const gchar *str)
1083 {
1084         struct TypeTable *typetablearray;
1085
1086         for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++)
1087                 if (g_ascii_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0)
1088                         return typetablearray->type;
1089
1090         return MIMETYPE_UNKNOWN;
1091 }
1092
1093 /*!
1094  *\brief        Safe wrapper for content type string.
1095  *
1096  *\return       const gchar * Pointer to content type string.
1097  */
1098 gchar *procmime_get_content_type_str(MimeMediaType type,
1099                                            const char *subtype)
1100 {
1101         const gchar *type_str = NULL;
1102
1103         if (subtype == NULL || !(type_str = procmime_get_media_type_str(type)))
1104                 return g_strdup("unknown");
1105         return g_strdup_printf("%s/%s", type_str, subtype);
1106 }
1107
1108 void procmime_parse_mimepart(MimeInfo *parent,
1109                              gchar *content_type,
1110                              gchar *content_encoding,
1111                              gchar *content_description,
1112                              gchar *content_id,
1113                              gchar *content_disposition,
1114                              const gchar *filename,
1115                              guint offset,
1116                              guint length);
1117
1118 void procmime_parse_message_rfc822(MimeInfo *mimeinfo)
1119 {
1120         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1121                                 {"Content-Transfer-Encoding:",
1122                                                    NULL, FALSE},
1123                                 {"Content-Description:",
1124                                                    NULL, TRUE},
1125                                 {"Content-ID:",
1126                                                    NULL, TRUE},
1127                                 {"Content-Disposition:",
1128                                                    NULL, TRUE},
1129                                 {"MIME-Version:",
1130                                                    NULL, TRUE},
1131                                 {NULL,             NULL, FALSE}};
1132         guint content_start, i;
1133         FILE *fp;
1134         gint mime_major, mime_minor;
1135
1136         procmime_decode_content(mimeinfo);
1137
1138         fp = fopen(mimeinfo->data.filename, "rb");
1139         if (fp == NULL) {
1140                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1141                 return;
1142         }
1143         fseek(fp, mimeinfo->offset, SEEK_SET);
1144         procheader_get_header_fields(fp, hentry);
1145         if (hentry[0].body != NULL)
1146                 conv_unmime_header_overwrite(hentry[0].body);
1147         if (hentry[2].body != NULL)
1148                 conv_unmime_header_overwrite(hentry[2].body);
1149         if (hentry[4].body != NULL)
1150                 conv_unmime_header_overwrite(hentry[4].body);
1151         content_start = ftell(fp);
1152         fclose(fp);
1153
1154         if ((hentry[5].body != NULL) &&
1155             (sscanf(hentry[5].body, "%d.%d", &mime_major, &mime_minor) == 2) &&
1156             (mime_major == 1) && (mime_minor == 0)) {
1157                 procmime_parse_mimepart(mimeinfo,
1158                                         hentry[0].body, hentry[1].body,
1159                                         hentry[2].body, hentry[3].body,
1160                                         hentry[4].body,
1161                                         mimeinfo->data.filename, content_start,
1162                                         mimeinfo->length - (content_start - mimeinfo->offset));
1163         } else {
1164                 MimeInfo *subinfo;
1165
1166                 subinfo = procmime_mimeinfo_new();
1167                 subinfo->encoding_type = ENC_UNKNOWN;
1168                 subinfo->type = MIMETYPE_TEXT;
1169                 subinfo->subtype = g_strdup("plain");
1170                 subinfo->data.filename = g_strdup(mimeinfo->data.filename);
1171                 subinfo->offset = content_start;
1172                 subinfo->length = mimeinfo->length - (content_start - mimeinfo->offset);
1173
1174                 g_node_append(mimeinfo->node, subinfo->node);
1175         }
1176         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1177                 g_free(hentry[i].body);
1178                 hentry[i].body = NULL;
1179         }
1180 }
1181
1182 void procmime_parse_multipart(MimeInfo *mimeinfo)
1183 {
1184         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1185                                 {"Content-Transfer-Encoding:",
1186                                                    NULL, FALSE},
1187                                 {"Content-Description:",
1188                                                    NULL, TRUE},
1189                                 {"Content-ID:",
1190                                                    NULL, TRUE},
1191                                 {"Content-Disposition:",
1192                                                    NULL, TRUE},
1193                                 {NULL,             NULL, FALSE}};
1194         gchar *p;
1195         gchar *boundary;
1196         gint boundary_len = 0, lastoffset = -1, i;
1197         gchar buf[BUFFSIZE];
1198         FILE *fp;
1199
1200         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1201         if (!boundary)
1202                 return;
1203         boundary_len = strlen(boundary);
1204
1205         procmime_decode_content(mimeinfo);
1206
1207         fp = fopen(mimeinfo->data.filename, "rb");
1208         if (fp == NULL) {
1209                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1210                 return;
1211         }
1212         fseek(fp, mimeinfo->offset, SEEK_SET);
1213         while ((p = fgets(buf, sizeof(buf), fp)) != NULL) {
1214                 if (ftell(fp) > (mimeinfo->offset + mimeinfo->length))
1215                         break;
1216
1217                 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1218                         if (lastoffset != -1) {
1219                                 procmime_parse_mimepart(mimeinfo,
1220                                                         hentry[0].body, hentry[1].body,
1221                                                         hentry[2].body, hentry[3].body,
1222                                                         hentry[4].body,
1223                                                         mimeinfo->data.filename, lastoffset,
1224                                                         (ftell(fp) - strlen(buf)) - lastoffset - 1);
1225                         }
1226
1227                         if (buf[2 + boundary_len]     == '-' &&
1228                             buf[2 + boundary_len + 1] == '-')
1229                                 break;
1230
1231                         for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1232                                 g_free(hentry[i].body);
1233                                 hentry[i].body = NULL;
1234                         }
1235                         procheader_get_header_fields(fp, hentry);
1236                         if (hentry[0].body != NULL)
1237                                 conv_unmime_header_overwrite(hentry[0].body);
1238                         if (hentry[2].body != NULL)
1239                                 conv_unmime_header_overwrite(hentry[2].body);
1240                         if (hentry[4].body != NULL)
1241                                 conv_unmime_header_overwrite(hentry[4].body);
1242                         lastoffset = ftell(fp);
1243                 }
1244         }
1245         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1246                 g_free(hentry[i].body);
1247                 hentry[i].body = NULL;
1248         }
1249         fclose(fp);
1250 }
1251
1252 static void parse_parameters(const gchar *parameters, GHashTable *table)
1253 {
1254         gchar *params, *param, *next;
1255         GSList *convlist = NULL, *concatlist = NULL, *cur;
1256
1257         params = g_strdup(parameters);
1258         param = params;
1259         next = params;
1260         for (; next != NULL; param = next) {
1261                 gchar *attribute, *value, *tmp;
1262                 gint len;
1263                 gboolean convert = FALSE;
1264
1265                 next = strchr_with_skip_quote(param, '"', ';');
1266                 if (next != NULL) {
1267                         next[0] = '\0';
1268                         next++;
1269                 }
1270
1271                 g_strstrip(param);
1272
1273                 attribute = param;
1274                 value = strchr(attribute, '=');
1275                 if (value == NULL)
1276                         continue;
1277
1278                 value[0] = '\0';
1279                 value++;
1280
1281                 g_strdown(attribute);
1282
1283                 len = strlen(attribute);
1284                 if (attribute[len - 1] == '*') {
1285                         gchar *srcpos, *dstpos, *endpos;
1286
1287                         convert = TRUE;
1288                         attribute[len - 1] = '\0';
1289
1290                         srcpos = value;
1291                         dstpos = value;
1292                         endpos = value + strlen(value);
1293                         while (srcpos < endpos) {
1294                                 if (*srcpos != '%')
1295                                         *dstpos = *srcpos;
1296                                 else {
1297                                         guchar dstvalue;
1298
1299                                         if (!get_hex_value(&dstvalue, srcpos[1], srcpos[2]))
1300                                                 *dstpos = '?';
1301                                         else
1302                                                 *dstpos = dstvalue;
1303                                         srcpos += 2;
1304                                 }
1305                                 srcpos++;
1306                                 dstpos++;
1307                         }
1308                         *dstpos = '\0';
1309                 } else {
1310                         if (value[0] == '"')
1311                                 extract_quote(value, '"');
1312                         else if ((tmp = strchr(value, ' ')) != NULL)
1313                                 *tmp = '\0';
1314                 }
1315
1316                 if (strrchr(attribute, '*') != NULL) {
1317                         gchar *tmpattr;
1318
1319                         tmpattr = g_strdup(attribute);
1320                         tmp = strrchr(tmpattr, '*');
1321                         tmp[0] = '\0';
1322
1323                         if ((tmp[1] == '0') && (tmp[2] == '\0') &&
1324                             (g_slist_find_custom(concatlist, attribute, g_str_equal) == NULL))
1325                                 concatlist = g_slist_prepend(concatlist, g_strdup(tmpattr));
1326
1327                         if (convert && (g_slist_find_custom(convlist, attribute, g_str_equal) == NULL))
1328                                 convlist = g_slist_prepend(convlist, g_strdup(tmpattr));
1329
1330                         g_free(tmpattr);
1331                 } else if (convert) {
1332                         if (g_slist_find_custom(convlist, attribute, g_str_equal) == NULL)
1333                                 convlist = g_slist_prepend(convlist, g_strdup(attribute));
1334                 }
1335
1336                 if (g_hash_table_lookup(table, attribute) == NULL)
1337                         g_hash_table_insert(table, g_strdup(attribute), g_strdup(value));
1338         }
1339
1340         for (cur = concatlist; cur != NULL; cur = g_slist_next(cur)) {
1341                 gchar *attribute, *attrwnum, *partvalue;
1342                 gint n = 0;
1343                 GString *value;
1344
1345                 attribute = (gchar *) cur->data;
1346                 value = g_string_sized_new(64);
1347
1348                 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1349                 while ((partvalue = g_hash_table_lookup(table, attrwnum)) != NULL) {
1350                         g_string_append(value, partvalue);
1351
1352                         g_free(attrwnum);
1353                         n++;
1354                         attrwnum = g_strdup_printf("%s*%d", attribute, n);
1355                 }
1356                 g_free(attrwnum);
1357
1358                 g_hash_table_insert(table, g_strdup(attribute), g_strdup(value->str));
1359                 g_string_free(value, TRUE);
1360         }
1361         slist_free_strings(concatlist);
1362         g_slist_free(concatlist);
1363
1364         for (cur = convlist; cur != NULL; cur = g_slist_next(cur)) {
1365                 gchar *attribute, *key, *value;
1366                 gchar *charset, *lang, *oldvalue, *newvalue;
1367
1368                 attribute = (gchar *) cur->data;
1369                 if (!g_hash_table_lookup_extended(table, attribute, (gpointer *) &key, (gpointer *) &value))
1370                         continue;
1371
1372                 charset = value;
1373                 lang = strchr(charset, '\'');
1374                 if (lang == NULL)
1375                         continue;
1376                 lang[0] = '\0';
1377                 lang++;
1378                 oldvalue = strchr(lang, '\'');
1379                 if (oldvalue == NULL)
1380                         continue;
1381                 oldvalue[0] = '\0';
1382                 oldvalue++;
1383
1384                 newvalue = conv_codeset_strdup(oldvalue, charset, CS_UTF_8);
1385
1386                 g_hash_table_remove(table, attribute);
1387                 g_free(key);
1388                 g_free(value);
1389
1390                 g_hash_table_insert(table, g_strdup(attribute), newvalue);
1391         }
1392         slist_free_strings(convlist);
1393         g_slist_free(convlist);
1394
1395         g_free(params);
1396 }
1397
1398 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1399 {
1400         g_return_if_fail(content_type != NULL);
1401         g_return_if_fail(mimeinfo != NULL);
1402
1403         /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1404          * if it's not available we use the default Content-Type */
1405         if ((content_type[0] == '\0') || (strchr(content_type, '/') == NULL)) {
1406                 mimeinfo->type = MIMETYPE_TEXT;
1407                 mimeinfo->subtype = g_strdup("plain");
1408                 if (g_hash_table_lookup(mimeinfo->typeparameters,
1409                                        "charset") == NULL)
1410                         g_hash_table_insert(mimeinfo->typeparameters,
1411                                             g_strdup("charset"),
1412                                             g_strdup("us-ascii"));
1413         } else {
1414                 gchar *type, *subtype, *params;
1415
1416                 type = g_strdup(content_type);
1417                 subtype = strchr(type, '/') + 1;
1418                 *(subtype - 1) = '\0';
1419                 if ((params = strchr(subtype, ';')) != NULL) {
1420                         params[0] = '\0';
1421                         params++;
1422                 }
1423
1424                 mimeinfo->type = procmime_get_media_type(type);
1425                 mimeinfo->subtype = g_strdup(subtype);
1426
1427                 /* Get mimeinfo->typeparameters */
1428                 if (params != NULL)
1429                         parse_parameters(params, mimeinfo->typeparameters);
1430
1431                 g_free(type);
1432         }
1433 }
1434
1435 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1436 {
1437         gchar *tmp, *params;
1438
1439         g_return_if_fail(content_disposition != NULL);
1440         g_return_if_fail(mimeinfo != NULL);
1441
1442         tmp = g_strdup(content_disposition);
1443         if ((params = strchr(tmp, ';')) != NULL) {
1444                 params[0] = '\0';
1445                 params++;
1446         }
1447         g_strstrip(tmp);
1448
1449         if (!g_ascii_strcasecmp(tmp, "inline"))
1450                 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1451         else if (!g_ascii_strcasecmp(tmp, "attachment"))
1452                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1453         else
1454                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1455
1456         if (params != NULL)
1457                 parse_parameters(params, mimeinfo->dispositionparameters);
1458
1459         g_free(tmp);
1460 }
1461
1462
1463 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1464 {
1465         struct EncodingTable *enc_table;
1466
1467         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1468                 if (g_ascii_strcasecmp(enc_table->str, content_encoding) == 0) {
1469                         mimeinfo->encoding_type = enc_table->enc_type;
1470                         return;
1471                 }
1472         }
1473         mimeinfo->encoding_type = ENC_UNKNOWN;
1474         return;
1475 }
1476
1477 void procmime_parse_mimepart(MimeInfo *parent,
1478                              gchar *content_type,
1479                              gchar *content_encoding,
1480                              gchar *content_description,
1481                              gchar *content_id,
1482                              gchar *content_disposition,
1483                              const gchar *filename,
1484                              guint offset,
1485                              guint length)
1486 {
1487         MimeInfo *mimeinfo;
1488
1489         /* Create MimeInfo */
1490         mimeinfo = procmime_mimeinfo_new();
1491         mimeinfo->content = MIMECONTENT_FILE;
1492         if (parent != NULL)
1493                 g_node_append(parent->node, mimeinfo->node);
1494         mimeinfo->data.filename = g_strdup(filename);
1495         mimeinfo->offset = offset;
1496         mimeinfo->length = length;
1497
1498         if (content_type != NULL) {
1499                 procmime_parse_content_type(content_type, mimeinfo);
1500         } else {
1501                 mimeinfo->type = MIMETYPE_TEXT;
1502                 mimeinfo->subtype = g_strdup("plain");
1503                 if (g_hash_table_lookup(mimeinfo->typeparameters,
1504                                        "charset") == NULL)
1505                         g_hash_table_insert(mimeinfo->typeparameters, g_strdup("charset"), g_strdup("us-ascii"));
1506         }
1507
1508         if (content_encoding != NULL) {
1509                 procmime_parse_content_encoding(content_encoding, mimeinfo);
1510         } else {
1511                 mimeinfo->encoding_type = ENC_UNKNOWN;
1512         }
1513
1514         if (content_description != NULL)
1515                 mimeinfo->description = g_strdup(content_description);
1516         else
1517                 mimeinfo->description = NULL;
1518
1519         if (content_id != NULL)
1520                 mimeinfo->id = g_strdup(content_id);
1521         else
1522                 mimeinfo->id = NULL;
1523
1524         if (content_disposition != NULL)
1525                 procmime_parse_content_disposition(content_disposition, mimeinfo);
1526         else
1527                 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
1528
1529         /* Call parser for mime type */
1530         switch (mimeinfo->type) {
1531                 case MIMETYPE_MESSAGE:
1532                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
1533                                 procmime_parse_message_rfc822(mimeinfo);
1534                         }
1535                         break;
1536
1537                 case MIMETYPE_MULTIPART:
1538                         procmime_parse_multipart(mimeinfo);
1539                         break;
1540
1541                 default:
1542                         break;
1543         }
1544 }
1545
1546 static gchar *typenames[] = {
1547     "text",
1548     "image",
1549     "audio",
1550     "video",
1551     "application",
1552     "message",
1553     "multipart",
1554     "unknown",
1555 };
1556
1557 static gboolean output_func(GNode *node, gpointer data)
1558 {
1559         guint i, depth;
1560         MimeInfo *mimeinfo = (MimeInfo *) node->data;
1561
1562         depth = g_node_depth(node);
1563         for (i = 0; i < depth; i++)
1564                 printf("    ");
1565         printf("%s/%s (offset:%d length:%d encoding: %d)\n", typenames[mimeinfo->type], mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
1566
1567         return FALSE;
1568 }
1569
1570 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
1571 {
1572         g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
1573 }
1574
1575 MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset)
1576 {
1577         MimeInfo *mimeinfo;
1578         struct stat buf;
1579
1580         stat(filename, &buf);
1581
1582         mimeinfo = procmime_mimeinfo_new();
1583         mimeinfo->content = MIMECONTENT_FILE;
1584         mimeinfo->encoding_type = ENC_UNKNOWN;
1585         mimeinfo->type = MIMETYPE_MESSAGE;
1586         mimeinfo->subtype = g_strdup("rfc822");
1587         mimeinfo->data.filename = g_strdup(filename);
1588         mimeinfo->offset = offset;
1589         mimeinfo->length = buf.st_size - offset;
1590
1591         procmime_parse_message_rfc822(mimeinfo);
1592         if (debug_get_mode())
1593                 output_mime_structure(mimeinfo, 0);
1594
1595         return mimeinfo;
1596 }
1597
1598 MimeInfo *procmime_scan_file(const gchar *filename)
1599 {
1600         MimeInfo *mimeinfo;
1601
1602         g_return_val_if_fail(filename != NULL, NULL);
1603
1604         mimeinfo = procmime_scan_file_with_offset(filename, 0);
1605
1606         return mimeinfo;
1607 }
1608
1609 MimeInfo *procmime_scan_queue_file(const gchar *filename)
1610 {
1611         FILE *fp;
1612         MimeInfo *mimeinfo;
1613         gchar buf[BUFFSIZE];
1614         gint offset = 0;
1615
1616         g_return_val_if_fail(filename != NULL, NULL);
1617
1618         /* Open file */
1619         if ((fp = fopen(filename, "rb")) == NULL)
1620                 return NULL;
1621         /* Skip queue header */
1622         while (fgets(buf, sizeof(buf), fp) != NULL)
1623                 if (buf[0] == '\r' || buf[0] == '\n') break;
1624         offset = ftell(fp);
1625         fclose(fp);
1626
1627         mimeinfo = procmime_scan_file_with_offset(filename, offset);
1628
1629         return mimeinfo;
1630 }
1631
1632 typedef enum {
1633     ENC_AS_TOKEN,
1634     ENC_AS_QUOTED_STRING,
1635     ENC_AS_EXTENDED,
1636 } EncodeAs;
1637
1638 static void write_parameters(gpointer key, gpointer value, gpointer user_data)
1639 {
1640         gchar *param = key;
1641         gchar *val = value, *valpos;
1642         FILE *fp = user_data;
1643         EncodeAs encas = ENC_AS_TOKEN;
1644
1645         for (valpos = val; *valpos != 0; valpos++) {
1646                 if (!IS_ASCII(*valpos)) {
1647                         encas = ENC_AS_EXTENDED;
1648                         break;
1649                 }
1650
1651                 /* CTLs */
1652                 if (((*valpos >= 0) && (*valpos < 037)) || (*valpos == 0177)) {
1653                         encas = ENC_AS_QUOTED_STRING;
1654                         continue;
1655                 }
1656
1657                 /* tspecials + SPACE */
1658                 switch (*valpos) {
1659                 case ' ':
1660                 case '(':
1661                 case ')':
1662                 case '<':
1663                 case '>':
1664                 case '@':
1665                 case ',':
1666                 case ';':
1667                 case ':':
1668                 case '\\':
1669                 case '"':
1670                 case '/':
1671                 case '[':
1672                 case ']':
1673                 case '?':
1674                 case '=':
1675                         encas = ENC_AS_QUOTED_STRING;
1676                         continue;
1677                 }
1678         }
1679
1680         switch (encas) {
1681         case ENC_AS_TOKEN:
1682                 fprintf(fp, "; %s=", param);
1683                 fprintf(fp, "%s", val);
1684                 break;
1685
1686         case ENC_AS_QUOTED_STRING:
1687                 fprintf(fp, "; %s=", param);
1688                 fprintf(fp, "\"%s\"", val);
1689                 break;
1690
1691         case ENC_AS_EXTENDED:
1692                 fprintf(fp, "; %s*=", param);
1693                 fprintf(fp, "%s''", conv_get_current_charset_str());
1694                 for (valpos = val; *valpos != '\0'; valpos++) {
1695                         if (IS_ASCII(*valpos) && isalnum(*valpos))
1696                                 fprintf(fp, "%c", *valpos);
1697                         else {
1698                                 gchar hexstr[3] = "XX";
1699                                 get_hex_str(hexstr, *valpos);
1700                                 fprintf(fp, "%%%s", hexstr);
1701                         }
1702                 }
1703                 break;
1704         }
1705 }
1706
1707 void procmime_write_mime_header(MimeInfo *mimeinfo, FILE *fp)
1708 {
1709         struct TypeTable *type_table;
1710
1711         debug_print("procmime_write_mime_header\n");
1712
1713         for (type_table = mime_type_table; type_table->str != NULL; type_table++)
1714                 if (mimeinfo->type == type_table->type) {
1715                         fprintf(fp, "Content-Type: %s/%s", type_table->str, mimeinfo->subtype);
1716                         break;
1717                 }
1718         g_hash_table_foreach(mimeinfo->typeparameters, write_parameters, fp);
1719         fprintf(fp, "\n");
1720
1721         if (mimeinfo->encoding_type != ENC_UNKNOWN)
1722                 fprintf(fp, "Content-Transfer-Encoding: %s\n", procmime_get_encoding_str(mimeinfo->encoding_type));
1723
1724         if (mimeinfo->description != NULL)
1725                 fprintf(fp, "Content-Description: %s\n", mimeinfo->description);
1726
1727         if (mimeinfo->id != NULL)
1728                 fprintf(fp, "Content-ID: %s\n", mimeinfo->id);
1729
1730         if (mimeinfo->disposition != DISPOSITIONTYPE_UNKNOWN) {
1731                 fprintf(fp, "Content-Disposition: ");
1732                 if (mimeinfo->disposition == DISPOSITIONTYPE_INLINE)
1733                         fprintf(fp, "inline");
1734                 else if (mimeinfo->disposition == DISPOSITIONTYPE_ATTACHMENT)
1735                         fprintf(fp, "attachment");
1736                 else
1737                         fprintf(fp, "unknown");
1738
1739                 /* FIXME: linebreaks after too many parameters */
1740                 g_hash_table_foreach(mimeinfo->dispositionparameters, write_parameters, fp);
1741                 fprintf(fp, "\n");
1742         }
1743
1744         fprintf(fp, "\n");
1745 }
1746
1747 gint procmime_write_message_rfc822(MimeInfo *mimeinfo, FILE *fp)
1748 {
1749         FILE *infp;
1750         GNode *childnode;
1751         MimeInfo *child;
1752         gchar buf[BUFFSIZE];
1753         gboolean skip = FALSE;;
1754
1755         debug_print("procmime_write_message_rfc822\n");
1756
1757         /* write header */
1758         switch (mimeinfo->content) {
1759         case MIMECONTENT_FILE:
1760                 if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
1761                         FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1762                         return -1;
1763                 }
1764                 fseek(infp, mimeinfo->offset, SEEK_SET);
1765                 while (fgets(buf, sizeof(buf), infp) == buf) {
1766                         if (buf[0] == '\n' && buf[1] == '\0')
1767                                 break;
1768                         if (skip && (buf[0] == ' ' || buf[0] == '\t'))
1769                                 continue;
1770                         if (g_ascii_strncasecmp(buf, "Mime-Version:", 13) == 0 ||
1771                             g_ascii_strncasecmp(buf, "Content-Type:", 13) == 0 ||
1772                             g_ascii_strncasecmp(buf, "Content-Transfer-Encoding:", 26) == 0 ||
1773                             g_ascii_strncasecmp(buf, "Content-Description:", 20) == 0 ||
1774                             g_ascii_strncasecmp(buf, "Content-ID:", 11) == 0 ||
1775                             g_ascii_strncasecmp(buf, "Content-Disposition:", 20) == 0) {
1776                                 skip = TRUE;
1777                                 continue;
1778                         }
1779                         fwrite(buf, sizeof(gchar), strlen(buf), fp);
1780                         skip = FALSE;
1781                 }
1782                 fclose(infp);
1783                 break;
1784
1785         case MIMECONTENT_MEM:
1786                 fwrite(mimeinfo->data.mem, strlen(mimeinfo->data.mem), sizeof(gchar), fp);
1787                 break;
1788
1789         default:
1790                 break;
1791         }
1792
1793         childnode = mimeinfo->node->children;
1794         if (childnode == NULL)
1795                 return -1;
1796
1797         child = (MimeInfo *) childnode->data;
1798         fprintf(fp, "Mime-Version: 1.0\n");
1799         procmime_write_mime_header(child, fp);
1800         return procmime_write_mimeinfo(child, fp);
1801 }
1802
1803 gint procmime_write_multipart(MimeInfo *mimeinfo, FILE *fp)
1804 {
1805         FILE *infp;
1806         GNode *childnode;
1807         gchar *boundary, *str, *str2;
1808         gchar buf[BUFFSIZE];
1809         gboolean firstboundary;
1810
1811         debug_print("procmime_write_multipart\n");
1812
1813         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1814
1815         switch (mimeinfo->content) {
1816         case MIMECONTENT_FILE:
1817                 if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
1818                         FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1819                         return -1;
1820                 }
1821                 fseek(infp, mimeinfo->offset, SEEK_SET);
1822                 while (fgets(buf, sizeof(buf), infp) == buf) {
1823                         if (IS_BOUNDARY(buf, boundary, strlen(boundary)))
1824                                 break;
1825                         fwrite(buf, sizeof(gchar), strlen(buf), fp);
1826                 }
1827                 fclose(infp);
1828                 break;
1829
1830         case MIMECONTENT_MEM:
1831                 str = g_strdup(mimeinfo->data.mem);
1832                 if (((str2 = strstr(str, boundary)) != NULL) && ((str2 - str) >= 2) &&
1833                     (*(str2 - 1) == '-') && (*(str2 - 2) == '-'))
1834                         *(str2 - 2) = '\0';
1835                 fwrite(str, strlen(str), sizeof(gchar), fp);
1836                 g_free(str);
1837                 break;
1838
1839         default:
1840                 break;
1841         }
1842
1843         childnode = mimeinfo->node->children;
1844         firstboundary = TRUE;
1845         while (childnode != NULL) {
1846                 MimeInfo *child = childnode->data;
1847
1848                 if (firstboundary)
1849                         firstboundary = FALSE;
1850                 else
1851                         fprintf(fp, "\n");
1852                 fprintf(fp, "--%s\n", boundary);
1853
1854                 procmime_write_mime_header(child, fp);
1855                 if (procmime_write_mimeinfo(child, fp) < 0)
1856                         return -1;
1857
1858                 childnode = g_node_next_sibling(childnode);
1859         }
1860         fprintf(fp, "\n--%s--\n", boundary);
1861
1862         return 0;
1863 }
1864
1865 gint procmime_write_mimeinfo(MimeInfo *mimeinfo, FILE *fp)
1866 {
1867         FILE *infp;
1868
1869         debug_print("procmime_write_mimeinfo\n");
1870
1871         if (G_NODE_IS_LEAF(mimeinfo->node)) {
1872                 switch (mimeinfo->content) {
1873                 case MIMECONTENT_FILE:
1874                         if ((infp = fopen(mimeinfo->data.filename, "rb")) == NULL) {
1875                                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1876                                 return -1;
1877                         }
1878                         copy_file_part_to_fp(infp, mimeinfo->offset, mimeinfo->length, fp);
1879                         fclose(infp);
1880                         return 0;
1881
1882                 case MIMECONTENT_MEM:
1883                         fwrite(mimeinfo->data.mem, strlen(mimeinfo->data.mem), sizeof(gchar), fp);
1884                         return 0;
1885
1886                 default:
1887                         return 0;
1888                 }
1889         } else {
1890                 /* Call writer for mime type */
1891                 switch (mimeinfo->type) {
1892                 case MIMETYPE_MESSAGE:
1893                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0)
1894                                 return procmime_write_message_rfc822(mimeinfo, fp);
1895                         break;
1896
1897                 case MIMETYPE_MULTIPART:
1898                         return procmime_write_multipart(mimeinfo, fp);
1899
1900                 default:
1901                         break;
1902                 }
1903
1904                 return -1;
1905         }
1906
1907         return 0;
1908 }