src/procmime.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2012 Hiroyuki Yamamoto & The Claws Mail 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 3 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, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #include "claws-features.h"
  23 #endif
  24
  25 #include "defs.h"
  26
  27 #include <stdio.h>
  28 #include <glib.h>
  29 #include <glib/gi18n.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #if HAVE_LOCALE_H
  33 #  include <locale.h>
  34 #endif
  35 #include <ctype.h>
  36 #include <sys/types.h>
  37 #include <sys/stat.h>
  38 #include <unistd.h>
  39 #include <errno.h>
  40
  41 #include "procmime.h"
  42 #include "procheader.h"
  43 #include "base64.h"
  44 #include "quoted-printable.h"
  45 #include "uuencode.h"
  46 #include "unmime.h"
  47 #include "html.h"
  48 #include "enriched.h"
  49 #include "codeconv.h"
  50 #include "utils.h"
  51 #include "prefs_common.h"
  52 #include "prefs_gtk.h"
  53 #include "alertpanel.h"
  54 #include "timing.h"
  55
  56 static GHashTable *procmime_get_mime_type_table (void);
  57 static MimeInfo *procmime_scan_file_short(const gchar *filename);
  58 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename);
  59 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan);
  60
  61 MimeInfo *procmime_mimeinfo_new(void)
  62 {
  63         MimeInfo *mimeinfo;
  64
  65         mimeinfo = g_new0(MimeInfo, 1);
  66         mimeinfo->content        = MIMECONTENT_EMPTY;
  67         mimeinfo->data.filename  = NULL;
  68
  69         mimeinfo->type           = MIMETYPE_UNKNOWN;
  70         mimeinfo->encoding_type  = ENC_UNKNOWN;
  71         mimeinfo->typeparameters = g_hash_table_new(g_str_hash, g_str_equal);
  72
  73         mimeinfo->disposition    = DISPOSITIONTYPE_UNKNOWN;
  74         mimeinfo->dispositionparameters
  75                                  = g_hash_table_new(g_str_hash, g_str_equal);
  76
  77         mimeinfo->node           = g_node_new(mimeinfo);
  78
  79         return mimeinfo;
  80 }
  81
  82 static gboolean procmime_mimeinfo_parameters_destroy(gpointer key, gpointer value, gpointer user_data)
  83 {
  84         g_free(key);
  85         g_free(value);
  86
  87         return TRUE;
  88 }
  89
  90 static gchar *forced_charset = NULL;
  91
  92 void procmime_force_charset(const gchar *str)
  93 {
  94         g_free(forced_charset);
  95         forced_charset = NULL;
  96         if (str)
  97                 forced_charset = g_strdup(str);
  98 }
  99
 100 static EncodingType forced_encoding = 0;
 101
 102 void procmime_force_encoding(EncodingType encoding)
 103 {
 104         forced_encoding = encoding;
 105 }
 106
 107 static gboolean free_func(GNode *node, gpointer data)
 108 {
 109         MimeInfo *mimeinfo = (MimeInfo *) node->data;
 110
 111         switch (mimeinfo->content) {
 112         case MIMECONTENT_FILE:
 113                 if (mimeinfo->tmp)
 114                         claws_unlink(mimeinfo->data.filename);
 115                 g_free(mimeinfo->data.filename);
 116                 break;
 117
 118         case MIMECONTENT_MEM:
 119                 if (mimeinfo->tmp)
 120                         g_free(mimeinfo->data.mem);
 121         default:
 122                 break;
 123         }
 124
 125         g_free(mimeinfo->subtype);
 126         g_free(mimeinfo->description);
 127         g_free(mimeinfo->id);
 128         g_free(mimeinfo->location);
 129
 130         g_hash_table_foreach_remove(mimeinfo->typeparameters,
 131                 procmime_mimeinfo_parameters_destroy, NULL);
 132         g_hash_table_destroy(mimeinfo->typeparameters);
 133         g_hash_table_foreach_remove(mimeinfo->dispositionparameters,
 134                 procmime_mimeinfo_parameters_destroy, NULL);
 135         g_hash_table_destroy(mimeinfo->dispositionparameters);
 136
 137         if (mimeinfo->privacy)
 138                 privacy_free_privacydata(mimeinfo->privacy);
 139
 140         g_free(mimeinfo);
 141
 142         return FALSE;
 143 }
 144
 145 void procmime_mimeinfo_free_all(MimeInfo *mimeinfo)
 146 {
 147         GNode *node;
 148
 149         if (!mimeinfo)
 150                 return;
 151
 152         node = mimeinfo->node;
 153         g_node_traverse(node, G_IN_ORDER, G_TRAVERSE_ALL, -1, free_func, NULL);
 154
 155         g_node_destroy(node);
 156 }
 157
 158 MimeInfo *procmime_mimeinfo_parent(MimeInfo *mimeinfo)
 159 {
 160         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 161         cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
 162
 163         if (mimeinfo->node->parent == NULL)
 164                 return NULL;
 165         return (MimeInfo *) mimeinfo->node->parent->data;
 166 }
 167
 168 MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
 169 {
 170         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 171         cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
 172
 173         if (mimeinfo->node->children)
 174                 return (MimeInfo *) mimeinfo->node->children->data;
 175         if (mimeinfo->node->next)
 176                 return (MimeInfo *) mimeinfo->node->next->data;
 177
 178         if (mimeinfo->node->parent == NULL)
 179                 return NULL;
 180
 181         while (mimeinfo->node->parent != NULL) {
 182                 mimeinfo = (MimeInfo *) mimeinfo->node->parent->data;
 183                 if (mimeinfo->node->next)
 184                         return (MimeInfo *) mimeinfo->node->next->data;
 185         }
 186
 187         return NULL;
 188 }
 189
 190 MimeInfo *procmime_scan_message(MsgInfo *msginfo)
 191 {
 192         gchar *filename;
 193         MimeInfo *mimeinfo;
 194
 195         filename = procmsg_get_message_file_path(msginfo);
 196         if (!filename || !is_file_exist(filename)) {
 197                 g_free(filename);
 198                 return NULL;
 199         }
 200
 201         if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
 202             !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
 203                 mimeinfo = procmime_scan_file(filename);
 204         else
 205                 mimeinfo = procmime_scan_queue_file(filename);
 206         g_free(filename);
 207
 208         return mimeinfo;
 209 }
 210
 211 MimeInfo *procmime_scan_message_short(MsgInfo *msginfo)
 212 {
 213         gchar *filename;
 214         MimeInfo *mimeinfo;
 215
 216         filename = procmsg_get_message_file_path(msginfo);
 217         if (!filename || !is_file_exist(filename)) {
 218                 g_free(filename);
 219                 return NULL;
 220         }
 221
 222         if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
 223             !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
 224                 mimeinfo = procmime_scan_file_short(filename);
 225         else
 226                 mimeinfo = procmime_scan_queue_file_short(filename);
 227         g_free(filename);
 228
 229         return mimeinfo;
 230 }
 231
 232 enum
 233 {
 234         H_CONTENT_TRANSFER_ENCODING = 0,
 235         H_CONTENT_TYPE              = 1,
 236         H_CONTENT_DISPOSITION       = 2,
 237         H_CONTENT_DESCRIPTION       = 3,
 238         H_SUBJECT                   = 4
 239 };
 240
 241 const gchar *procmime_mimeinfo_get_parameter(MimeInfo *mimeinfo, const gchar *name)
 242 {
 243         const gchar *value;
 244
 245         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 246         cm_return_val_if_fail(name != NULL, NULL);
 247
 248         value = g_hash_table_lookup(mimeinfo->dispositionparameters, name);
 249         if (value == NULL)
 250                 value = g_hash_table_lookup(mimeinfo->typeparameters, name);
 251
 252         return value;
 253 }
 254
 255 #define FLUSH_LASTLINE() {                                                      \
 256         if (*lastline != '\0') {                                                \
 257                 gint llen = 0;                                                  \
 258                 strretchomp(lastline);                                          \
 259                 llen = strlen(lastline);                                        \
 260                 if (lastline[llen-1] == ' ' && strcmp(lastline,"-- ")) {        \
 261                         /* this is flowed */                                    \
 262                         if (delsp)                                              \
 263                                 lastline[llen-1] = '\0';                        \
 264                         if (fputs(lastline, outfp) == EOF)                      \
 265                                 err = TRUE;                                     \
 266                 } else {                                                        \
 267                         if (fputs(lastline, outfp) == EOF)                      \
 268                                 err = TRUE;                                     \
 269                         if (fputs("\n", outfp) == EOF)                          \
 270                                 err = TRUE;                                     \
 271                 }                                                               \
 272         }                                                                       \
 273         strcpy(lastline, buf);                                                  \
 274 }
 275
 276 gboolean procmime_decode_content(MimeInfo *mimeinfo)
 277 {
 278         gchar buf[BUFFSIZE];
 279         gint readend;
 280         gchar *tmpfilename;
 281         FILE *outfp, *infp;
 282         struct stat statbuf;
 283         gboolean tmp_file = FALSE;
 284         gboolean flowed = FALSE;
 285         gboolean delsp = FALSE;
 286         gboolean err = FALSE;
 287
 288         EncodingType encoding = forced_encoding
 289                                 ? forced_encoding
 290                                 : mimeinfo->encoding_type;
 291         gchar lastline[BUFFSIZE];
 292         memset(lastline, 0, BUFFSIZE);
 293
 294         cm_return_val_if_fail(mimeinfo != NULL, FALSE);
 295
 296         if (prefs_common.respect_flowed_format &&
 297             mimeinfo->type == MIMETYPE_TEXT &&
 298             !strcasecmp(mimeinfo->subtype, "plain")) {
 299                 if (procmime_mimeinfo_get_parameter(mimeinfo, "format") != NULL &&
 300                     !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "format"),"flowed"))
 301                         flowed = TRUE;
 302                 if (flowed &&
 303                     procmime_mimeinfo_get_parameter(mimeinfo, "delsp") != NULL &&
 304                     !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "delsp"),"yes"))
 305                         delsp = TRUE;
 306         }
 307
 308         if (!flowed && (
 309              encoding == ENC_UNKNOWN ||
 310              encoding == ENC_BINARY ||
 311              encoding == ENC_7BIT ||
 312              encoding == ENC_8BIT
 313             ))
 314                 return TRUE;
 315
 316         infp = g_fopen(mimeinfo->data.filename, "rb");
 317         if (!infp) {
 318                 perror("fopen");
 319                 return FALSE;
 320         }
 321         fseek(infp, mimeinfo->offset, SEEK_SET);
 322
 323         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 324         if (!outfp) {
 325                 perror("tmpfile");
 326                 fclose(infp);
 327                 return FALSE;
 328         }
 329         tmp_file = TRUE;
 330         readend = mimeinfo->offset + mimeinfo->length;
 331
 332         if (encoding == ENC_QUOTED_PRINTABLE) {
 333                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 334                         gint len;
 335                         len = qp_decode_line(buf);
 336                         buf[len]='\0';
 337                         if (!flowed) {
 338                                 if (fwrite(buf, 1, len, outfp) < len)
 339                                         err = TRUE;
 340                         } else {
 341                                 FLUSH_LASTLINE();
 342                         }
 343                 }
 344                 if (flowed)
 345                         FLUSH_LASTLINE();
 346         } else if (encoding == ENC_BASE64) {
 347                 gchar outbuf[BUFFSIZE];
 348                 gint len, inlen, inread;
 349                 Base64Decoder *decoder;
 350                 gboolean got_error = FALSE;
 351                 gboolean uncanonicalize = FALSE;
 352                 FILE *tmpfp = outfp;
 353                 gboolean null_bytes = FALSE;
 354                 gboolean starting = TRUE;
 355
 356                 if (mimeinfo->type == MIMETYPE_TEXT ||
 357                     mimeinfo->type == MIMETYPE_MESSAGE) {
 358                         uncanonicalize = TRUE;
 359                         tmpfp = my_tmpfile();
 360                         if (!tmpfp) {
 361                                 perror("tmpfile");
 362                                 if (tmp_file) fclose(outfp);
 363                                 fclose(infp);
 364                                 return FALSE;
 365                         }
 366                 }
 367
 368                 decoder = base64_decoder_new();
 369                 while ((inlen = MIN(readend - ftell(infp), sizeof(buf))) > 0 && !err) {
 370                         inread = fread(buf, 1, inlen, infp);
 371                         len = base64_decoder_decode(decoder, buf, outbuf, inread);
 372                         if (uncanonicalize == TRUE && strlen(outbuf) < len && starting) {
 373                                 uncanonicalize = FALSE;
 374                                 null_bytes = TRUE;
 375                         }
 376                         starting = FALSE;
 377                         if (((inread != inlen) || len < 0) && !got_error) {
 378                                 g_warning("Bad BASE64 content.\n");
 379                                 if (fwrite(_("[Error decoding BASE64]\n"),
 380                                         sizeof(gchar),
 381                                         strlen(_("[Error decoding BASE64]\n")),
 382                                         tmpfp) < strlen(_("[Error decoding BASE64]\n")))
 383                                         g_warning("error decoding BASE64");
 384                                 got_error = TRUE;
 385                                 continue;
 386                         } else if (len >= 0) {
 387                                 /* print out the error message only once
 388                                  * per block */
 389                                 if (null_bytes) {
 390                                         /* we won't uncanonicalize, output to outfp directly */
 391                                         if (fwrite(outbuf, sizeof(gchar), len, outfp) < len)
 392                                                 err = TRUE;
 393                                 } else {
 394                                         if (fwrite(outbuf, sizeof(gchar), len, tmpfp) < len)
 395                                                 err = TRUE;
 396                                 }
 397                                 got_error = FALSE;
 398                         }
 399                 }
 400                 base64_decoder_free(decoder);
 401
 402                 if (uncanonicalize) {
 403                         rewind(tmpfp);
 404                         while (fgets(buf, sizeof(buf), tmpfp) != NULL) {
 405                                 strcrchomp(buf);
 406                                 if (fputs(buf, outfp) == EOF)
 407                                         err = TRUE;
 408                         }
 409                         fclose(tmpfp);
 410                 }
 411         } else if (encoding == ENC_X_UUENCODE) {
 412                 gchar outbuf[BUFFSIZE];
 413                 gint len;
 414                 gboolean flag = FALSE;
 415
 416                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 417                         if (!flag && strncmp(buf,"begin ", 6)) continue;
 418
 419                         if (flag) {
 420                                 len = fromuutobits(outbuf, buf);
 421                                 if (len <= 0) {
 422                                         if (len < 0)
 423                                                 g_warning("Bad UUENCODE content(%d)\n", len);
 424                                         break;
 425                                 }
 426                                 if (fwrite(outbuf, sizeof(gchar), len, outfp) < len)
 427                                         err = TRUE;
 428                         } else
 429                                 flag = TRUE;
 430                 }
 431         } else {
 432                 while ((ftell(infp) < readend) && (fgets(buf, sizeof(buf), infp) != NULL)) {
 433                         if (!flowed) {
 434                                 if (fputs(buf, outfp) == EOF)
 435                                         err = TRUE;
 436                         } else {
 437                                 FLUSH_LASTLINE();
 438                         }
 439                 }
 440                 if (flowed)
 441                         FLUSH_LASTLINE();
 442                 if (err == TRUE)
 443                         g_warning("write error");
 444         }
 445
 446         fclose(outfp);
 447         fclose(infp);
 448
 449         if (err == TRUE) {
 450                 return FALSE;
 451         }
 452
 453         g_stat(tmpfilename, &statbuf);
 454         if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
 455                 claws_unlink(mimeinfo->data.filename);
 456         g_free(mimeinfo->data.filename);
 457         mimeinfo->data.filename = tmpfilename;
 458         mimeinfo->tmp = TRUE;
 459         mimeinfo->offset = 0;
 460         mimeinfo->length = statbuf.st_size;
 461         mimeinfo->encoding_type = ENC_BINARY;
 462
 463         return TRUE;
 464 }
 465
 466 #define B64_LINE_SIZE           57
 467 #define B64_BUFFSIZE            77
 468
 469 gboolean procmime_encode_content(MimeInfo *mimeinfo, EncodingType encoding)
 470 {
 471         FILE *infp = NULL, *outfp;
 472         gint len;
 473         gchar *tmpfilename;
 474         struct stat statbuf;
 475         gboolean err = FALSE;
 476
 477         if (mimeinfo->content == MIMECONTENT_EMPTY)
 478                 return TRUE;
 479
 480         if (mimeinfo->encoding_type != ENC_UNKNOWN &&
 481             mimeinfo->encoding_type != ENC_BINARY &&
 482             mimeinfo->encoding_type != ENC_7BIT &&
 483             mimeinfo->encoding_type != ENC_8BIT)
 484                 if(!procmime_decode_content(mimeinfo))
 485                         return FALSE;
 486
 487         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 488         if (!outfp) {
 489                 perror("tmpfile");
 490                 return FALSE;
 491         }
 492
 493         if (mimeinfo->content == MIMECONTENT_FILE && mimeinfo->data.filename) {
 494                 if ((infp = g_fopen(mimeinfo->data.filename, "rb")) == NULL) {
 495                         g_warning("Can't open file %s\n", mimeinfo->data.filename);
 496                         fclose(outfp);
 497                         return FALSE;
 498                 }
 499         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 500                 infp = str_open_as_stream(mimeinfo->data.mem);
 501                 if (infp == NULL) {
 502                         fclose(outfp);
 503                         return FALSE;
 504                 }
 505         }
 506
 507         if (encoding == ENC_BASE64) {
 508                 gchar inbuf[B64_LINE_SIZE], outbuf[B64_BUFFSIZE];
 509                 FILE *tmp_fp = infp;
 510                 gchar *tmp_file = NULL;
 511
 512                 if (mimeinfo->type == MIMETYPE_TEXT ||
 513                      mimeinfo->type == MIMETYPE_MESSAGE) {
 514                         if (mimeinfo->content == MIMECONTENT_FILE) {
 515                                 tmp_file = get_tmp_file();
 516                                 if (canonicalize_file(mimeinfo->data.filename, tmp_file) < 0) {
 517                                         g_free(tmp_file);
 518                                         fclose(infp);
 519                                         fclose(outfp);
 520                                         return FALSE;
 521                                 }
 522                                 if ((tmp_fp = g_fopen(tmp_file, "rb")) == NULL) {
 523                                         FILE_OP_ERROR(tmp_file, "fopen");
 524                                         claws_unlink(tmp_file);
 525                                         g_free(tmp_file);
 526                                         fclose(infp);
 527                                         fclose(outfp);
 528                                         return FALSE;
 529                                 }
 530                         } else {
 531                                 gchar *out = canonicalize_str(mimeinfo->data.mem);
 532                                 fclose(infp);
 533                                 infp = str_open_as_stream(out);
 534                                 tmp_fp = infp;
 535                                 g_free(out);
 536                                 if (infp == NULL) {
 537                                         fclose(outfp);
 538                                         return FALSE;
 539                                 }
 540                         }
 541                 }
 542
 543                 while ((len = fread(inbuf, sizeof(gchar),
 544                                     B64_LINE_SIZE, tmp_fp))
 545                        == B64_LINE_SIZE) {
 546                         base64_encode(outbuf, inbuf, B64_LINE_SIZE);
 547                         if (fputs(outbuf, outfp) == EOF)
 548                                 err = TRUE;
 549                         if (fputc('\n', outfp) == EOF)
 550                                 err = TRUE;
 551                 }
 552                 if (len > 0 && feof(tmp_fp)) {
 553                         base64_encode(outbuf, inbuf, len);
 554                         if (fputs(outbuf, outfp) == EOF)
 555                                 err = TRUE;
 556                         if (fputc('\n', outfp) == EOF)
 557                                 err = TRUE;
 558                 }
 559
 560                 if (tmp_file) {
 561                         fclose(tmp_fp);
 562                         claws_unlink(tmp_file);
 563                         g_free(tmp_file);
 564                 }
 565         } else if (encoding == ENC_QUOTED_PRINTABLE) {
 566                 gchar inbuf[BUFFSIZE], outbuf[BUFFSIZE * 4];
 567
 568                 while (fgets(inbuf, sizeof(inbuf), infp) != NULL) {
 569                         qp_encode_line(outbuf, inbuf);
 570
 571                         if (!strncmp("From ", outbuf, sizeof("From ")-1)) {
 572                                 gchar *tmpbuf = outbuf;
 573
 574                                 tmpbuf += sizeof("From ")-1;
 575
 576                                 if (fputs("=46rom ", outfp) == EOF)
 577                                         err = TRUE;
 578                                 if (fputs(tmpbuf, outfp) == EOF)
 579                                         err = TRUE;
 580                         } else {
 581                                 if (fputs(outbuf, outfp) == EOF)
 582                                         err = TRUE;
 583                         }
 584                 }
 585         } else {
 586                 gchar buf[BUFFSIZE];
 587
 588                 while (fgets(buf, sizeof(buf), infp) != NULL) {
 589                         strcrchomp(buf);
 590                         if (fputs(buf, outfp) == EOF)
 591                                 err = TRUE;
 592                 }
 593         }
 594
 595         fclose(outfp);
 596         fclose(infp);
 597
 598         if (err == TRUE)
 599                 return FALSE;
 600
 601         if (mimeinfo->content == MIMECONTENT_FILE) {
 602                 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
 603                         claws_unlink(mimeinfo->data.filename);
 604                 g_free(mimeinfo->data.filename);
 605         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 606                 if (mimeinfo->tmp && (mimeinfo->data.mem != NULL))
 607                         g_free(mimeinfo->data.mem);
 608         }
 609
 610         g_stat(tmpfilename, &statbuf);
 611         mimeinfo->content = MIMECONTENT_FILE;
 612         mimeinfo->data.filename = tmpfilename;
 613         mimeinfo->tmp = TRUE;
 614         mimeinfo->offset = 0;
 615         mimeinfo->length = statbuf.st_size;
 616         mimeinfo->encoding_type = encoding;
 617
 618         return TRUE;
 619 }
 620
 621 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
 622 {
 623         FILE *infp, *outfp;
 624         gchar buf[BUFFSIZE];
 625         gint restlength, readlength;
 626         gint saved_errno = 0;
 627
 628         cm_return_val_if_fail(outfile != NULL, -1);
 629         cm_return_val_if_fail(mimeinfo != NULL, -1);
 630
 631         if (mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
 632                 return -EINVAL;
 633
 634         if ((infp = g_fopen(mimeinfo->data.filename, "rb")) == NULL) {
 635                 saved_errno = errno;
 636                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
 637                 return -(saved_errno);
 638         }
 639         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
 640                 saved_errno = errno;
 641                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
 642                 fclose(infp);
 643                 return -(saved_errno);
 644         }
 645         if ((outfp = g_fopen(outfile, "wb")) == NULL) {
 646                 saved_errno = errno;
 647                 FILE_OP_ERROR(outfile, "fopen");
 648                 fclose(infp);
 649                 return -(saved_errno);
 650         }
 651
 652         restlength = mimeinfo->length;
 653
 654         while ((restlength > 0) && ((readlength = fread(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
 655                 if (fwrite(buf, 1, readlength, outfp) != readlength) {
 656                         saved_errno = errno;
 657                         fclose(infp);
 658                         fclose(outfp);
 659                         return -(saved_errno);
 660                 }
 661                 restlength -= readlength;
 662         }
 663
 664         fclose(infp);
 665         if (fclose(outfp) == EOF) {
 666                 saved_errno = errno;
 667                 FILE_OP_ERROR(outfile, "fclose");
 668                 claws_unlink(outfile);
 669                 return -(saved_errno);
 670         }
 671
 672         return 0;
 673 }
 674
 675 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
 676 {
 677         FILE *tmpfp, *outfp;
 678         const gchar *src_codeset;
 679         gboolean conv_fail = FALSE;
 680         gchar buf[BUFFSIZE];
 681         gchar *str;
 682         gchar *tmpfile;
 683         gboolean err = FALSE;
 684
 685         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 686
 687         if (!procmime_decode_content(mimeinfo))
 688                 return NULL;
 689
 690         tmpfile = procmime_get_tmp_file_name(mimeinfo);
 691         if (tmpfile == NULL)
 692                 return NULL;
 693
 694         if (procmime_get_part(tmpfile, mimeinfo) < 0) {
 695                 g_free(tmpfile);
 696                 return NULL;
 697         }
 698
 699         tmpfp = g_fopen(tmpfile, "rb");
 700         if (tmpfp == NULL) {
 701                 g_free(tmpfile);
 702                 return NULL;
 703         }
 704
 705         if ((outfp = my_tmpfile()) == NULL) {
 706                 perror("tmpfile");
 707                 fclose(tmpfp);
 708                 g_free(tmpfile);
 709                 return NULL;
 710         }
 711
 712         src_codeset = forced_charset
 713                       ? forced_charset :
 714                       procmime_mimeinfo_get_parameter(mimeinfo, "charset");
 715
 716         /* use supersets transparently when possible */
 717         if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_ISO_8859_1))
 718                 src_codeset = CS_WINDOWS_1252;
 719         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_GBK))
 720                 src_codeset = CS_GB18030;
 721         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GBK))
 722                 src_codeset = CS_GB18030;
 723         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GB2312))
 724                 src_codeset = CS_GB18030;
 725
 726         if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "html")) {
 727                 SC_HTMLParser *parser;
 728                 CodeConverter *conv;
 729
 730                 conv = conv_code_converter_new(src_codeset);
 731                 parser = sc_html_parser_new(tmpfp, conv);
 732                 while ((str = sc_html_parse(parser)) != NULL) {
 733                         if (fputs(str, outfp) == EOF)
 734                                 err = TRUE;
 735                 }
 736                 sc_html_parser_destroy(parser);
 737                 conv_code_converter_destroy(conv);
 738         } else if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "enriched")) {
 739                 ERTFParser *parser;
 740                 CodeConverter *conv;
 741
 742                 conv = conv_code_converter_new(src_codeset);
 743                 parser = ertf_parser_new(tmpfp, conv);
 744                 while ((str = ertf_parse(parser)) != NULL) {
 745                         if (fputs(str, outfp) == EOF)
 746                                 err = TRUE;
 747                 }
 748                 ertf_parser_destroy(parser);
 749                 conv_code_converter_destroy(conv);
 750         } else if (mimeinfo->type == MIMETYPE_TEXT) {
 751                 while (fgets(buf, sizeof(buf), tmpfp) != NULL) {
 752                         str = conv_codeset_strdup(buf, src_codeset, CS_UTF_8);
 753                         if (str) {
 754                                 if (fputs(str, outfp) == EOF)
 755                                         err = TRUE;
 756                                 g_free(str);
 757                         } else {
 758                                 conv_fail = TRUE;
 759                                 if (fputs(buf, outfp) == EOF)
 760                                         err = TRUE;
 761                         }
 762                 }
 763         }
 764
 765         if (conv_fail)
 766                 g_warning("procmime_get_text_content(): Code conversion failed.\n");
 767
 768         fclose(tmpfp);
 769         rewind(outfp);
 770         claws_unlink(tmpfile);
 771         g_free(tmpfile);
 772
 773         if (err == TRUE) {
 774                 fclose(outfp);
 775                 return NULL;
 776         }
 777
 778         return outfp;
 779 }
 780
 781 FILE *procmime_get_binary_content(MimeInfo *mimeinfo)
 782 {
 783         FILE *outfp;
 784         gchar *tmpfile;
 785
 786         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 787
 788         if (!procmime_decode_content(mimeinfo))
 789                 return NULL;
 790
 791         tmpfile = procmime_get_tmp_file_name(mimeinfo);
 792         if (tmpfile == NULL)
 793                 return NULL;
 794
 795         if (procmime_get_part(tmpfile, mimeinfo) < 0) {
 796                 g_free(tmpfile);
 797                 return NULL;
 798         }
 799
 800         outfp = g_fopen(tmpfile, "rb");
 801         if (outfp == NULL) {
 802                 g_unlink(tmpfile);
 803                 g_free(tmpfile);
 804                 return NULL;
 805         }
 806
 807         g_unlink(tmpfile);
 808         g_free(tmpfile);
 809
 810         return outfp;
 811 }
 812
 813 /* search the first text part of (multipart) MIME message,
 814    decode, convert it and output to outfp. */
 815 FILE *procmime_get_first_text_content(MsgInfo *msginfo)
 816 {
 817         FILE *outfp = NULL;
 818         MimeInfo *mimeinfo, *partinfo;
 819         gboolean empty_ok = FALSE, short_scan = TRUE;
 820
 821         cm_return_val_if_fail(msginfo != NULL, NULL);
 822
 823         /* first we try to short-scan (for speed), refusing empty parts */
 824 scan_again:
 825         if (short_scan)
 826                 mimeinfo = procmime_scan_message_short(msginfo);
 827         else
 828                 mimeinfo = procmime_scan_message(msginfo);
 829         if (!mimeinfo) return NULL;
 830
 831         partinfo = mimeinfo;
 832         while (partinfo && (partinfo->type != MIMETYPE_TEXT ||
 833                (partinfo->length == 0 && !empty_ok))) {
 834                 partinfo = procmime_mimeinfo_next(partinfo);
 835         }
 836         if (partinfo)
 837                 outfp = procmime_get_text_content(partinfo);
 838         else if (!empty_ok && short_scan) {
 839                 /* if short scan didn't find a non-empty part, rescan
 840                  * fully for non-empty parts
 841                  */
 842                 short_scan = FALSE;
 843                 procmime_mimeinfo_free_all(mimeinfo);
 844                 goto scan_again;
 845         } else if (!empty_ok && !short_scan) {
 846                 /* if full scan didn't find a non-empty part, rescan
 847                  * accepting empty parts
 848                  */
 849                 empty_ok = TRUE;
 850                 procmime_mimeinfo_free_all(mimeinfo);
 851                 goto scan_again;
 852         }
 853         procmime_mimeinfo_free_all(mimeinfo);
 854         return outfp;
 855 }
 856
 857
 858 static gboolean find_encrypted_func(GNode *node, gpointer data)
 859 {
 860         MimeInfo *mimeinfo = (MimeInfo *) node->data;
 861         MimeInfo **encinfo = (MimeInfo **) data;
 862
 863         if (privacy_mimeinfo_is_encrypted(mimeinfo)) {
 864                 *encinfo = mimeinfo;
 865                 return TRUE;
 866         }
 867
 868         return FALSE;
 869 }
 870
 871 static MimeInfo *find_encrypted_part(MimeInfo *rootinfo)
 872 {
 873         MimeInfo *encinfo = NULL;
 874
 875         g_node_traverse(rootinfo->node, G_IN_ORDER, G_TRAVERSE_ALL, -1,
 876                 find_encrypted_func, &encinfo);
 877
 878         return encinfo;
 879 }
 880
 881 /* search the first encrypted text part of (multipart) MIME message,
 882    decode, convert it and output to outfp. */
 883 FILE *procmime_get_first_encrypted_text_content(MsgInfo *msginfo)
 884 {
 885         FILE *outfp = NULL;
 886         MimeInfo *mimeinfo, *partinfo, *encinfo;
 887
 888         cm_return_val_if_fail(msginfo != NULL, NULL);
 889
 890         mimeinfo = procmime_scan_message(msginfo);
 891         if (!mimeinfo) {
 892                 return NULL;
 893         }
 894
 895         partinfo = mimeinfo;
 896         if ((encinfo = find_encrypted_part(partinfo)) != NULL) {
 897                 debug_print("decrypting message part\n");
 898                 if (privacy_mimeinfo_decrypt(encinfo) < 0) {
 899                         alertpanel_error(_("Couldn't decrypt: %s"),
 900                                 privacy_get_error());
 901                         return NULL;
 902                 }
 903         }
 904         partinfo = mimeinfo;
 905         while (partinfo && partinfo->type != MIMETYPE_TEXT) {
 906                 partinfo = procmime_mimeinfo_next(partinfo);
 907                 if (privacy_mimeinfo_is_signed(partinfo))
 908                         procmsg_msginfo_set_flags(msginfo, 0, MSG_SIGNED);
 909         }
 910
 911         if (partinfo)
 912                 outfp = procmime_get_text_content(partinfo);
 913
 914         procmime_mimeinfo_free_all(mimeinfo);
 915
 916         return outfp;
 917 }
 918
 919 gboolean procmime_msginfo_is_encrypted(MsgInfo *msginfo)
 920 {
 921         MimeInfo *mimeinfo, *partinfo;
 922         gboolean result = FALSE;
 923
 924         cm_return_val_if_fail(msginfo != NULL, FALSE);
 925
 926         mimeinfo = procmime_scan_message(msginfo);
 927         if (!mimeinfo) {
 928                 return FALSE;
 929         }
 930
 931         partinfo = mimeinfo;
 932         result = (find_encrypted_part(partinfo) != NULL);
 933         procmime_mimeinfo_free_all(mimeinfo);
 934
 935         return result;
 936 }
 937
 938 gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
 939 {
 940         static guint32 id = 0;
 941         gchar *base;
 942         gchar *filename;
 943         gchar f_prefix[10];
 944
 945         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 946
 947         g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++);
 948
 949         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
 950                 base = g_strdup("mimetmp.html");
 951         else {
 952                 const gchar *basetmp;
 953
 954                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
 955                 if (basetmp == NULL)
 956                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
 957                 if (basetmp == NULL)
 958                         basetmp = "mimetmp";
 959                 basetmp = g_path_get_basename(basetmp);
 960                 if (*basetmp == '\0')
 961                         basetmp = g_strdup("mimetmp");
 962                 base = conv_filename_from_utf8(basetmp);
 963                 g_free((gchar*)basetmp);
 964                 subst_for_shellsafe_filename(base);
 965         }
 966
 967         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 968                                f_prefix, base, NULL);
 969
 970         g_free(base);
 971
 972         return filename;
 973 }
 974
 975 static GList *mime_type_list = NULL;
 976
 977 gchar *procmime_get_mime_type(const gchar *filename)
 978 {
 979         const gchar *p;
 980         gchar *ext = NULL;
 981         gchar *base;
 982 #ifndef G_OS_WIN32
 983         static GHashTable *mime_type_table = NULL;
 984         MimeType *mime_type;
 985
 986         if (!mime_type_table) {
 987                 mime_type_table = procmime_get_mime_type_table();
 988                 if (!mime_type_table) return NULL;
 989         }
 990 #endif
 991
 992         if (filename == NULL)
 993                 return NULL;
 994
 995         base = g_path_get_basename(filename);
 996         if ((p = strrchr(base, '.')) != NULL)
 997                 ext = g_utf8_strdown(p + 1, -1);
 998         g_free(base);
 999
1000 #ifndef G_OS_WIN32
1001         mime_type = g_hash_table_lookup(mime_type_table, ext);
1002
1003         if (mime_type) {
1004                 gchar *str;
1005                 str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
1006                                   NULL);
1007                 debug_print("got type %s for %s\n", str, ext);
1008                 g_free(ext);
1009                 return str;
1010         }
1011         return NULL;
1012 #else
1013         gchar *str = get_content_type_from_registry_with_ext(ext);
1014
1015         g_free(ext);
1016         return str;
1017 #endif
1018 }
1019
1020 static guint procmime_str_hash(gconstpointer gptr)
1021 {
1022         guint hash_result = 0;
1023         const char *str;
1024
1025         for (str = gptr; str && *str; str++) {
1026                 if (isupper(*str)) hash_result += (*str + ' ');
1027                 else hash_result += *str;
1028         }
1029
1030         return hash_result;
1031 }
1032
1033 static gint procmime_str_equal(gconstpointer gptr1, gconstpointer gptr2)
1034 {
1035         const char *str1 = gptr1;
1036         const char *str2 = gptr2;
1037
1038         return !g_utf8_collate(str1, str2);
1039 }
1040
1041 static GHashTable *procmime_get_mime_type_table(void)
1042 {
1043         GHashTable *table = NULL;
1044         GList *cur;
1045         MimeType *mime_type;
1046         gchar **exts;
1047
1048         if (!mime_type_list) {
1049                 mime_type_list = procmime_get_mime_type_list();
1050                 if (!mime_type_list) return NULL;
1051         }
1052
1053         table = g_hash_table_new(procmime_str_hash, procmime_str_equal);
1054
1055         for (cur = mime_type_list; cur != NULL; cur = cur->next) {
1056                 gint i;
1057                 gchar *key;
1058
1059                 mime_type = (MimeType *)cur->data;
1060
1061                 if (!mime_type->extension) continue;
1062
1063                 exts = g_strsplit(mime_type->extension, " ", 16);
1064                 for (i = 0; exts[i] != NULL; i++) {
1065                         /* use previously dup'd key on overwriting */
1066                         if (g_hash_table_lookup(table, exts[i]))
1067                                 key = exts[i];
1068                         else
1069                                 key = g_strdup(exts[i]);
1070                         g_hash_table_insert(table, key, mime_type);
1071                 }
1072                 g_strfreev(exts);
1073         }
1074
1075         return table;
1076 }
1077
1078 GList *procmime_get_mime_type_list(void)
1079 {
1080         GList *list = NULL;
1081         FILE *fp;
1082         gchar buf[BUFFSIZE];
1083         gchar *p;
1084         gchar *delim;
1085         MimeType *mime_type;
1086         gboolean fp_is_glob_file = TRUE;
1087
1088         if (mime_type_list)
1089                 return mime_type_list;
1090
1091 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__)
1092         if ((fp = g_fopen(DATAROOTDIR "/mime/globs", "rb")) == NULL)
1093 #else
1094         if ((fp = g_fopen("/usr/share/mime/globs", "rb")) == NULL)
1095 #endif
1096         {
1097                 fp_is_glob_file = FALSE;
1098                 if ((fp = g_fopen("/etc/mime.types", "rb")) == NULL) {
1099                         if ((fp = g_fopen(SYSCONFDIR "/mime.types", "rb"))
1100                                 == NULL) {
1101                                 FILE_OP_ERROR(SYSCONFDIR "/mime.types",
1102                                         "fopen");
1103                                 return NULL;
1104                         }
1105                 }
1106         }
1107
1108         while (fgets(buf, sizeof(buf), fp) != NULL) {
1109                 p = strchr(buf, '#');
1110                 if (p) *p = '\0';
1111                 g_strstrip(buf);
1112
1113                 p = buf;
1114
1115                 if (fp_is_glob_file) {
1116                         while (*p && !g_ascii_isspace(*p) && (*p!=':')) p++;
1117                 } else {
1118                         while (*p && !g_ascii_isspace(*p)) p++;
1119                 }
1120
1121                 if (*p) {
1122                         *p = '\0';
1123                         p++;
1124                 }
1125                 delim = strchr(buf, '/');
1126                 if (delim == NULL) continue;
1127                 *delim = '\0';
1128
1129                 mime_type = g_new(MimeType, 1);
1130                 mime_type->type = g_strdup(buf);
1131                 mime_type->sub_type = g_strdup(delim + 1);
1132
1133                 if (fp_is_glob_file) {
1134                         while (*p && (g_ascii_isspace(*p)||(*p=='*')||(*p=='.'))) p++;
1135                 } else {
1136                         while (*p && g_ascii_isspace(*p)) p++;
1137                 }
1138
1139                 if (*p)
1140                         mime_type->extension = g_utf8_strdown(p, -1);
1141                 else
1142                         mime_type->extension = NULL;
1143
1144                 list = g_list_append(list, mime_type);
1145         }
1146
1147         fclose(fp);
1148
1149         if (!list)
1150                 g_warning("Can't read mime.types\n");
1151
1152         return list;
1153 }
1154
1155 EncodingType procmime_get_encoding_for_charset(const gchar *charset)
1156 {
1157         if (!charset)
1158                 return ENC_8BIT;
1159         else if (!g_ascii_strncasecmp(charset, "ISO-2022-", 9) ||
1160                  !g_ascii_strcasecmp(charset, "US-ASCII"))
1161                 return ENC_7BIT;
1162         else if (!g_ascii_strcasecmp(charset, "ISO-8859-5") ||
1163                  !g_ascii_strncasecmp(charset, "KOI8-", 5) ||
1164                  !g_ascii_strcasecmp(charset, "Windows-1251"))
1165                 return ENC_8BIT;
1166         else if (!g_ascii_strncasecmp(charset, "ISO-8859-", 9))
1167                 return ENC_QUOTED_PRINTABLE;
1168         else if (!g_ascii_strncasecmp(charset, "UTF-8", 5))
1169                 return ENC_QUOTED_PRINTABLE;
1170         else
1171                 return ENC_8BIT;
1172 }
1173
1174 EncodingType procmime_get_encoding_for_text_file(const gchar *file, gboolean *has_binary)
1175 {
1176         FILE *fp;
1177         guchar buf[BUFFSIZE];
1178         size_t len;
1179         size_t octet_chars = 0;
1180         size_t total_len = 0;
1181         gfloat octet_percentage;
1182         gboolean force_b64 = FALSE;
1183
1184         if ((fp = g_fopen(file, "rb")) == NULL) {
1185                 FILE_OP_ERROR(file, "fopen");
1186                 return ENC_UNKNOWN;
1187         }
1188
1189         while ((len = fread(buf, sizeof(guchar), sizeof(buf), fp)) > 0) {
1190                 guchar *p;
1191                 gint i;
1192
1193                 for (p = buf, i = 0; i < len; ++p, ++i) {
1194                         if (*p & 0x80)
1195                                 ++octet_chars;
1196                         if (*p == '\0') {
1197                                 force_b64 = TRUE;
1198                                 *has_binary = TRUE;
1199                         }
1200                 }
1201                 total_len += len;
1202         }
1203
1204         fclose(fp);
1205
1206         if (total_len > 0)
1207                 octet_percentage = (gfloat)octet_chars / (gfloat)total_len;
1208         else
1209                 octet_percentage = 0.0;
1210
1211         debug_print("procmime_get_encoding_for_text_file(): "
1212                     "8bit chars: %zd / %zd (%f%%)\n", octet_chars, total_len,
1213                     100.0 * octet_percentage);
1214
1215         if (octet_percentage > 0.20 || force_b64) {
1216                 debug_print("using BASE64\n");
1217                 return ENC_BASE64;
1218         } else if (octet_chars > 0) {
1219                 debug_print("using quoted-printable\n");
1220                 return ENC_QUOTED_PRINTABLE;
1221         } else {
1222                 debug_print("using 7bit\n");
1223                 return ENC_7BIT;
1224         }
1225 }
1226
1227 struct EncodingTable
1228 {
1229         gchar *str;
1230         EncodingType enc_type;
1231 };
1232
1233 struct EncodingTable encoding_table[] = {
1234         {"7bit", ENC_7BIT},
1235         {"8bit", ENC_8BIT},
1236         {"binary", ENC_BINARY},
1237         {"quoted-printable", ENC_QUOTED_PRINTABLE},
1238         {"base64", ENC_BASE64},
1239         {"x-uuencode", ENC_UNKNOWN},
1240         {NULL, ENC_UNKNOWN},
1241 };
1242
1243 const gchar *procmime_get_encoding_str(EncodingType encoding)
1244 {
1245         struct EncodingTable *enc_table;
1246
1247         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1248                 if (enc_table->enc_type == encoding)
1249                         return enc_table->str;
1250         }
1251         return NULL;
1252 }
1253
1254 /* --- NEW MIME STUFF --- */
1255 struct TypeTable
1256 {
1257         gchar *str;
1258         MimeMediaType type;
1259 };
1260
1261 static struct TypeTable mime_type_table[] = {
1262         {"text", MIMETYPE_TEXT},
1263         {"image", MIMETYPE_IMAGE},
1264         {"audio", MIMETYPE_AUDIO},
1265         {"video", MIMETYPE_VIDEO},
1266         {"application", MIMETYPE_APPLICATION},
1267         {"message", MIMETYPE_MESSAGE},
1268         {"multipart", MIMETYPE_MULTIPART},
1269         {NULL, 0},
1270 };
1271
1272 const gchar *procmime_get_media_type_str(MimeMediaType type)
1273 {
1274         struct TypeTable *type_table;
1275
1276         for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
1277                 if (type_table->type == type)
1278                         return type_table->str;
1279         }
1280         return NULL;
1281 }
1282
1283 MimeMediaType procmime_get_media_type(const gchar *str)
1284 {
1285         struct TypeTable *typetablearray;
1286
1287         for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++)
1288                 if (g_ascii_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0)
1289                         return typetablearray->type;
1290
1291         return MIMETYPE_UNKNOWN;
1292 }
1293
1294 /*!
1295  *\brief        Safe wrapper for content type string.
1296  *
1297  *\return       const gchar * Pointer to content type string.
1298  */
1299 gchar *procmime_get_content_type_str(MimeMediaType type,
1300                                            const char *subtype)
1301 {
1302         const gchar *type_str = NULL;
1303
1304         if (subtype == NULL || !(type_str = procmime_get_media_type_str(type)))
1305                 return g_strdup("unknown");
1306         return g_strdup_printf("%s/%s", type_str, subtype);
1307 }
1308
1309 static int procmime_parse_mimepart(MimeInfo *parent,
1310                              gchar *content_type,
1311                              gchar *content_encoding,
1312                              gchar *content_description,
1313                              gchar *content_id,
1314                              gchar *content_disposition,
1315                              gchar *content_location,
1316                              const gchar *original_msgid,
1317                              const gchar *disposition_notification_hdr,
1318                              const gchar *filename,
1319                              guint offset,
1320                              guint length,
1321                              gboolean short_scan);
1322
1323 static void procmime_parse_message_rfc822(MimeInfo *mimeinfo, gboolean short_scan)
1324 {
1325         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1326                                 {"Content-Transfer-Encoding:",
1327                                                    NULL, FALSE},
1328                                 {"Content-Description:",
1329                                                    NULL, TRUE},
1330                                 {"Content-ID:",
1331                                                    NULL, TRUE},
1332                                 {"Content-Disposition:",
1333                                                    NULL, TRUE},
1334                                 {"Content-Location:",
1335                                                    NULL, TRUE},
1336                                 {"MIME-Version:",
1337                                                    NULL, TRUE},
1338                                 {"Original-Message-ID:",
1339                                                    NULL, TRUE},
1340                                 {"Disposition:",
1341                                                    NULL, TRUE},
1342                                 {NULL,             NULL, FALSE}};
1343         guint content_start, i;
1344         FILE *fp;
1345         gchar *tmp;
1346         gint len = 0;
1347
1348         procmime_decode_content(mimeinfo);
1349
1350         fp = g_fopen(mimeinfo->data.filename, "rb");
1351         if (fp == NULL) {
1352                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1353                 return;
1354         }
1355         fseek(fp, mimeinfo->offset, SEEK_SET);
1356         procheader_get_header_fields(fp, hentry);
1357         if (hentry[0].body != NULL) {
1358                 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);
1359                 g_free(hentry[0].body);
1360                 hentry[0].body = tmp;
1361         }
1362         if (hentry[2].body != NULL) {
1363                 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);
1364                 g_free(hentry[2].body);
1365                 hentry[2].body = tmp;
1366         }
1367         if (hentry[4].body != NULL) {
1368                 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);
1369                 g_free(hentry[4].body);
1370                 hentry[4].body = tmp;
1371         }
1372         if (hentry[5].body != NULL) {
1373                 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);
1374                 g_free(hentry[5].body);
1375                 hentry[5].body = tmp;
1376         }
1377         if (hentry[7].body != NULL) {
1378                 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);
1379                 g_free(hentry[7].body);
1380                 hentry[7].body = tmp;
1381         }
1382         if (hentry[8].body != NULL) {
1383                 tmp = conv_unmime_header(hentry[8].body, NULL, FALSE);
1384                 g_free(hentry[8].body);
1385                 hentry[8].body = tmp;
1386         }
1387
1388         content_start = ftell(fp);
1389         fclose(fp);
1390
1391         len = mimeinfo->length - (content_start - mimeinfo->offset);
1392         if (len < 0)
1393                 len = 0;
1394         procmime_parse_mimepart(mimeinfo,
1395                                 hentry[0].body, hentry[1].body,
1396                                 hentry[2].body, hentry[3].body,
1397                                 hentry[4].body, hentry[5].body,
1398                                 hentry[7].body, hentry[8].body,
1399                                 mimeinfo->data.filename, content_start,
1400                                 len, short_scan);
1401
1402         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1403                 g_free(hentry[i].body);
1404                 hentry[i].body = NULL;
1405         }
1406 }
1407
1408 static void procmime_parse_disposition_notification(MimeInfo *mimeinfo,
1409                 const gchar *original_msgid, const gchar *disposition_notification_hdr,
1410                 gboolean short_scan)
1411 {
1412         HeaderEntry hentry[] = {{"Original-Message-ID:",  NULL, TRUE},
1413                                 {"Disposition:",          NULL, TRUE},
1414                                 {NULL,                    NULL, FALSE}};
1415         guint i;
1416         FILE *fp;
1417         gchar *orig_msg_id = NULL;
1418         gchar *disp = NULL;
1419
1420         procmime_decode_content(mimeinfo);
1421
1422         debug_print("parse disposition notification\n");
1423         fp = g_fopen(mimeinfo->data.filename, "rb");
1424         if (fp == NULL) {
1425                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1426                 return;
1427         }
1428         fseek(fp, mimeinfo->offset, SEEK_SET);
1429
1430         if (original_msgid && disposition_notification_hdr) {
1431                 hentry[0].body = g_strdup(original_msgid);
1432                 hentry[1].body = g_strdup(disposition_notification_hdr);
1433         } else {
1434                 procheader_get_header_fields(fp, hentry);
1435         }
1436
1437         fclose(fp);
1438
1439         if (!hentry[0].body || !hentry[1].body) {
1440                 debug_print("MsgId %s, Disp %s\n",
1441                         hentry[0].body ? hentry[0].body:"(nil)",
1442                         hentry[1].body ? hentry[1].body:"(nil)");
1443                 goto bail;
1444         }
1445
1446         orig_msg_id = g_strdup(hentry[0].body);
1447         disp = g_strdup(hentry[1].body);
1448
1449         extract_parenthesis(orig_msg_id, '<', '>');
1450         remove_space(orig_msg_id);
1451
1452         if (strstr(disp, "displayed")) {
1453                 /* find sent message, if possible */
1454                 MsgInfo *info = NULL;
1455                 GList *flist;
1456                 debug_print("%s has been displayed.\n", orig_msg_id);
1457                 for (flist = folder_get_list(); flist != NULL; flist = g_list_next(flist)) {
1458                         FolderItem *outbox = ((Folder *)(flist->data))->outbox;
1459                         if (!outbox) {
1460                                 debug_print("skipping folder with no outbox...\n");
1461                                 continue;
1462                         }
1463                         info = folder_item_get_msginfo_by_msgid(outbox, orig_msg_id);
1464                         debug_print("%s %s in %s\n", info?"found":"didn't find", orig_msg_id, outbox->path);
1465                         if (info) {
1466                                 procmsg_msginfo_set_flags(info, MSG_RETRCPT_GOT, 0);
1467                                 procmsg_msginfo_free(info);
1468                         }
1469                 }
1470         }
1471         g_free(orig_msg_id);
1472         g_free(disp);
1473 bail:
1474         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1475                 g_free(hentry[i].body);
1476                 hentry[i].body = NULL;
1477         }
1478 }
1479
1480 #define GET_HEADERS() {                                         \
1481         procheader_get_header_fields(fp, hentry);               \
1482         if (hentry[0].body != NULL) {                           \
1483                 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);  \
1484                 g_free(hentry[0].body);                         \
1485                 hentry[0].body = tmp;                           \
1486         }                                                       \
1487         if (hentry[2].body != NULL) {                           \
1488                 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);  \
1489                 g_free(hentry[2].body);                         \
1490                 hentry[2].body = tmp;                           \
1491         }                                                       \
1492         if (hentry[4].body != NULL) {                           \
1493                 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);  \
1494                 g_free(hentry[4].body);                         \
1495                 hentry[4].body = tmp;                           \
1496         }                                                       \
1497         if (hentry[5].body != NULL) {                           \
1498                 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);  \
1499                 g_free(hentry[5].body);                         \
1500                 hentry[5].body = tmp;                           \
1501         }                                                       \
1502         if (hentry[6].body != NULL) {                           \
1503                 tmp = conv_unmime_header(hentry[6].body, NULL, FALSE);  \
1504                 g_free(hentry[6].body);                         \
1505                 hentry[6].body = tmp;                           \
1506         }                                                       \
1507         if (hentry[7].body != NULL) {                           \
1508                 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);  \
1509                 g_free(hentry[7].body);                         \
1510                 hentry[7].body = tmp;                           \
1511         }                                                       \
1512 }
1513
1514 static void procmime_parse_multipart(MimeInfo *mimeinfo, gboolean short_scan)
1515 {
1516         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1517                                 {"Content-Transfer-Encoding:",
1518                                                    NULL, FALSE},
1519                                 {"Content-Description:",
1520                                                    NULL, TRUE},
1521                                 {"Content-ID:",
1522                                                    NULL, TRUE},
1523                                 {"Content-Disposition:",
1524                                                    NULL, TRUE},
1525                                 {"Content-Location:",
1526                                                    NULL, TRUE},
1527                                 {"Original-Message-ID:",
1528                                                    NULL, TRUE},
1529                                 {"Disposition:",
1530                                                    NULL, TRUE},
1531                                 {NULL,             NULL, FALSE}};
1532         gchar *p, *tmp;
1533         gchar *boundary;
1534         gint boundary_len = 0, lastoffset = -1, i;
1535         gchar buf[BUFFSIZE];
1536         FILE *fp;
1537         int result = 0;
1538         gboolean done = FALSE;
1539         gboolean start_found = FALSE;
1540         gboolean end_found = FALSE;
1541
1542         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1543         if (!boundary)
1544                 return;
1545         boundary_len = strlen(boundary);
1546
1547         procmime_decode_content(mimeinfo);
1548
1549         fp = g_fopen(mimeinfo->data.filename, "rb");
1550         if (fp == NULL) {
1551                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1552                 return;
1553         }
1554
1555         fseek(fp, mimeinfo->offset, SEEK_SET);
1556         while ((p = fgets(buf, sizeof(buf), fp)) != NULL && result == 0) {
1557                 if (ftell(fp) - 1 > (mimeinfo->offset + mimeinfo->length))
1558                         break;
1559
1560                 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1561                         start_found = TRUE;
1562
1563                         if (lastoffset != -1) {
1564                                 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1565                                 if (len < 0)
1566                                         len = 0;
1567                                 result = procmime_parse_mimepart(mimeinfo,
1568                                                         hentry[0].body, hentry[1].body,
1569                                                         hentry[2].body, hentry[3].body,
1570                                                         hentry[4].body, hentry[5].body,
1571                                                         hentry[6].body, hentry[7].body,
1572                                                         mimeinfo->data.filename, lastoffset,
1573                                                         len, short_scan);
1574                                 if (result == 1 && short_scan) {
1575                                         done = TRUE;
1576                                         break;
1577                                 }
1578                         }
1579
1580                         if (buf[2 + boundary_len]     == '-' &&
1581                             buf[2 + boundary_len + 1] == '-') {
1582                                 end_found = TRUE;
1583                                 break;
1584                         }
1585                         for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1586                                 g_free(hentry[i].body);
1587                                 hentry[i].body = NULL;
1588                         }
1589                         GET_HEADERS();
1590                         lastoffset = ftell(fp);
1591                 }
1592         }
1593
1594         if (start_found && !end_found && lastoffset != -1) {
1595                 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1596
1597                 if (len >= 0) {
1598                         result = procmime_parse_mimepart(mimeinfo,
1599                                         hentry[0].body, hentry[1].body,
1600                                         hentry[2].body, hentry[3].body,
1601                                         hentry[4].body, hentry[5].body,
1602                                         hentry[6].body, hentry[7].body,
1603                                         mimeinfo->data.filename, lastoffset,
1604                                         len, short_scan);
1605                 }
1606                 mimeinfo->broken = TRUE;
1607         }
1608
1609         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1610                 g_free(hentry[i].body);
1611                 hentry[i].body = NULL;
1612         }
1613         fclose(fp);
1614 }
1615
1616 static void parse_parameters(const gchar *parameters, GHashTable *table)
1617 {
1618         gchar *params, *param, *next;
1619         GSList *convlist = NULL, *concatlist = NULL, *cur;
1620
1621         params = g_strdup(parameters);
1622         param = params;
1623         next = params;
1624         for (; next != NULL; param = next) {
1625                 gchar *attribute, *value, *tmp, *down_attr, *orig_down_attr;
1626                 gint len;
1627                 gboolean convert = FALSE;
1628
1629                 next = strchr_with_skip_quote(param, '"', ';');
1630                 if (next != NULL) {
1631                         next[0] = '\0';
1632                         next++;
1633                 }
1634
1635                 g_strstrip(param);
1636
1637                 attribute = param;
1638                 value = strchr(attribute, '=');
1639                 if (value == NULL)
1640                         continue;
1641
1642                 value[0] = '\0';
1643                 value++;
1644                 while (value[0] == ' ')
1645                         value++;
1646
1647                 down_attr = g_utf8_strdown(attribute, -1);
1648                 orig_down_attr = down_attr;
1649
1650                 len = down_attr ? strlen(down_attr):0;
1651                 if (len > 0 && down_attr[len - 1] == '*') {
1652                         gchar *srcpos, *dstpos, *endpos;
1653
1654                         convert = TRUE;
1655                         down_attr[len - 1] = '\0';
1656
1657                         srcpos = value;
1658                         dstpos = value;
1659                         endpos = value + strlen(value);
1660                         while (srcpos < endpos) {
1661                                 if (*srcpos != '%')
1662                                         *dstpos = *srcpos;
1663                                 else {
1664                                         guchar dstvalue;
1665
1666                                         if (!get_hex_value(&dstvalue, srcpos[1], srcpos[2]))
1667                                                 *dstpos = '?';
1668                                         else
1669                                                 *dstpos = dstvalue;
1670                                         srcpos += 2;
1671                                 }
1672                                 srcpos++;
1673                                 dstpos++;
1674                         }
1675                         *dstpos = '\0';
1676                         if (value[0] == '"')
1677                                 extract_quote(value, '"');
1678                 } else {
1679                         if (value[0] == '"')
1680                                 extract_quote(value, '"');
1681                         else if ((tmp = strchr(value, ' ')) != NULL)
1682                                 *tmp = '\0';
1683                 }
1684
1685                 if (down_attr) {
1686                         while (down_attr[0] == ' ')
1687                                 down_attr++;
1688                         while (down_attr[strlen(down_attr)-1] == ' ')
1689                                 down_attr[strlen(down_attr)-1] = '\0';
1690                 }
1691                 if (value) {
1692                         while (value[0] == ' ')
1693                                 value++;
1694                         while (value[strlen(value)-1] == ' ')
1695                                 value[strlen(value)-1] = '\0';
1696                 }
1697                 if (down_attr && strrchr(down_attr, '*') != NULL) {
1698                         gchar *tmpattr;
1699
1700                         tmpattr = g_strdup(down_attr);
1701                         tmp = strrchr(tmpattr, '*');
1702                         tmp[0] = '\0';
1703
1704                         if ((tmp[1] == '0') && (tmp[2] == '\0') &&
1705                             (g_slist_find_custom(concatlist, down_attr, g_strcmp0) == NULL))
1706                                 concatlist = g_slist_prepend(concatlist, g_strdup(tmpattr));
1707
1708                         if (convert && (g_slist_find_custom(convlist, tmpattr, g_strcmp0) == NULL))
1709                                 convlist = g_slist_prepend(convlist, g_strdup(tmpattr));
1710
1711                         g_free(tmpattr);
1712                 } else if (convert) {
1713                         if (g_slist_find_custom(convlist, down_attr, g_strcmp0) == NULL)
1714                                 convlist = g_slist_prepend(convlist, g_strdup(down_attr));
1715                 }
1716
1717                 if (g_hash_table_lookup(table, down_attr) == NULL)
1718                         g_hash_table_insert(table, g_strdup(down_attr), g_strdup(value));
1719                 g_free(orig_down_attr);
1720         }
1721
1722         for (cur = concatlist; cur != NULL; cur = g_slist_next(cur)) {
1723                 gchar *attribute, *attrwnum, *partvalue;
1724                 gint n = 0;
1725                 GString *value;
1726
1727                 attribute = (gchar *) cur->data;
1728                 value = g_string_sized_new(64);
1729
1730                 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1731                 while ((partvalue = g_hash_table_lookup(table, attrwnum)) != NULL) {
1732                         g_string_append(value, partvalue);
1733
1734                         g_hash_table_remove(table, attrwnum);
1735                         g_free(attrwnum);
1736                         n++;
1737                         attrwnum = g_strdup_printf("%s*%d", attribute, n);
1738                 }
1739                 g_free(attrwnum);
1740
1741                 g_hash_table_insert(table, g_strdup(attribute), g_strdup(value->str));
1742                 g_string_free(value, TRUE);
1743         }
1744         slist_free_strings(concatlist);
1745         g_slist_free(concatlist);
1746
1747         for (cur = convlist; cur != NULL; cur = g_slist_next(cur)) {
1748                 gchar *attribute, *key, *value;
1749                 gchar *charset, *lang, *oldvalue, *newvalue;
1750
1751                 attribute = (gchar *) cur->data;
1752                 if (!g_hash_table_lookup_extended(
1753                         table, attribute, (gpointer *)(gchar *) &key, (gpointer *)(gchar *) &value))
1754                         continue;
1755
1756                 charset = value;
1757                 lang = strchr(charset, '\'');
1758                 if (lang == NULL)
1759                         continue;
1760                 lang[0] = '\0';
1761                 lang++;
1762                 oldvalue = strchr(lang, '\'');
1763                 if (oldvalue == NULL)
1764                         continue;
1765                 oldvalue[0] = '\0';
1766                 oldvalue++;
1767
1768                 newvalue = conv_codeset_strdup(oldvalue, charset, CS_UTF_8);
1769
1770                 g_hash_table_remove(table, attribute);
1771                 g_free(key);
1772                 g_free(value);
1773
1774                 g_hash_table_insert(table, g_strdup(attribute), newvalue);
1775         }
1776         slist_free_strings(convlist);
1777         g_slist_free(convlist);
1778
1779         g_free(params);
1780 }
1781
1782 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1783 {
1784         cm_return_if_fail(content_type != NULL);
1785         cm_return_if_fail(mimeinfo != NULL);
1786
1787         /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1788          * if it's not available we use the default Content-Type */
1789         if ((content_type[0] == '\0') || (strchr(content_type, '/') == NULL)) {
1790                 mimeinfo->type = MIMETYPE_TEXT;
1791                 mimeinfo->subtype = g_strdup("plain");
1792                 if (g_hash_table_lookup(mimeinfo->typeparameters,
1793                                        "charset") == NULL) {
1794                         g_hash_table_insert(mimeinfo->typeparameters,
1795                                     g_strdup("charset"),
1796                                     g_strdup(
1797                                         conv_get_locale_charset_str_no_utf8()));
1798                 }
1799         } else {
1800                 gchar *type, *subtype, *params;
1801
1802                 type = g_strdup(content_type);
1803                 subtype = strchr(type, '/') + 1;
1804                 *(subtype - 1) = '\0';
1805                 if ((params = strchr(subtype, ';')) != NULL) {
1806                         params[0] = '\0';
1807                         params++;
1808                 }
1809
1810                 mimeinfo->type = procmime_get_media_type(type);
1811                 mimeinfo->subtype = g_strstrip(g_strdup(subtype));
1812
1813                 /* Get mimeinfo->typeparameters */
1814                 if (params != NULL)
1815                         parse_parameters(params, mimeinfo->typeparameters);
1816
1817                 g_free(type);
1818         }
1819 }
1820
1821 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1822 {
1823         gchar *tmp, *params;
1824
1825         cm_return_if_fail(content_disposition != NULL);
1826         cm_return_if_fail(mimeinfo != NULL);
1827
1828         tmp = g_strdup(content_disposition);
1829         if ((params = strchr(tmp, ';')) != NULL) {
1830                 params[0] = '\0';
1831                 params++;
1832         }
1833         g_strstrip(tmp);
1834
1835         if (!g_ascii_strcasecmp(tmp, "inline"))
1836                 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1837         else if (!g_ascii_strcasecmp(tmp, "attachment"))
1838                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1839         else
1840                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1841
1842         if (params != NULL)
1843                 parse_parameters(params, mimeinfo->dispositionparameters);
1844
1845         g_free(tmp);
1846 }
1847
1848
1849 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1850 {
1851         struct EncodingTable *enc_table;
1852
1853         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1854                 if (g_ascii_strcasecmp(enc_table->str, content_encoding) == 0) {
1855                         mimeinfo->encoding_type = enc_table->enc_type;
1856                         return;
1857                 }
1858         }
1859         mimeinfo->encoding_type = ENC_UNKNOWN;
1860         return;
1861 }
1862
1863 static GSList *registered_parsers = NULL;
1864
1865 static MimeParser *procmime_get_mimeparser_for_type(MimeMediaType type, const gchar *sub_type)
1866 {
1867         GSList *cur;
1868         for (cur = registered_parsers; cur; cur = cur->next) {
1869                 MimeParser *parser = (MimeParser *)cur->data;
1870                 if (parser->type == type && !strcmp2(parser->sub_type, sub_type))
1871                         return parser;
1872         }
1873         return NULL;
1874 }
1875
1876 void procmime_mimeparser_register(MimeParser *parser)
1877 {
1878         if (!procmime_get_mimeparser_for_type(parser->type, parser->sub_type))
1879                 registered_parsers = g_slist_append(registered_parsers, parser);
1880 }
1881
1882
1883 void procmime_mimeparser_unregister(MimeParser *parser)
1884 {
1885         registered_parsers = g_slist_remove(registered_parsers, parser);
1886 }
1887
1888 static gboolean procmime_mimeparser_parse(MimeParser *parser, MimeInfo *mimeinfo)
1889 {
1890         cm_return_val_if_fail(parser->parse != NULL, FALSE);
1891         return parser->parse(parser, mimeinfo);
1892 }
1893
1894 static int procmime_parse_mimepart(MimeInfo *parent,
1895                              gchar *content_type,
1896                              gchar *content_encoding,
1897                              gchar *content_description,
1898                              gchar *content_id,
1899                              gchar *content_disposition,
1900                              gchar *content_location,
1901                              const gchar *original_msgid,
1902                              const gchar *disposition_notification_hdr,
1903                              const gchar *filename,
1904                              guint offset,
1905                              guint length,
1906                              gboolean short_scan)
1907 {
1908         MimeInfo *mimeinfo;
1909         MimeParser *parser = NULL;
1910         gboolean parsed = FALSE;
1911         int result = 0;
1912
1913         /* Create MimeInfo */
1914         mimeinfo = procmime_mimeinfo_new();
1915         mimeinfo->content = MIMECONTENT_FILE;
1916
1917         if (parent != NULL) {
1918                 if (g_node_depth(parent->node) > 32) {
1919                         /* 32 is an arbitrary value
1920                          * this avoids DOSsing ourselves
1921                          * with enormous messages
1922                          */
1923                         procmime_mimeinfo_free_all(mimeinfo);
1924                         return -1;
1925                 }
1926                 g_node_append(parent->node, mimeinfo->node);
1927         }
1928         mimeinfo->data.filename = g_strdup(filename);
1929         mimeinfo->offset = offset;
1930         mimeinfo->length = length;
1931
1932         if (content_type != NULL) {
1933                 procmime_parse_content_type(content_type, mimeinfo);
1934         } else {
1935                 mimeinfo->type = MIMETYPE_TEXT;
1936                 mimeinfo->subtype = g_strdup("plain");
1937                 if (g_hash_table_lookup(mimeinfo->typeparameters,
1938                                        "charset") == NULL) {
1939                         g_hash_table_insert(mimeinfo->typeparameters,
1940                                     g_strdup("charset"),
1941                                     g_strdup(
1942                                         conv_get_locale_charset_str_no_utf8()));
1943                 }
1944         }
1945
1946         if (content_encoding != NULL) {
1947                 procmime_parse_content_encoding(content_encoding, mimeinfo);
1948         } else {
1949                 mimeinfo->encoding_type = ENC_UNKNOWN;
1950         }
1951
1952         if (content_description != NULL)
1953                 mimeinfo->description = g_strdup(content_description);
1954         else
1955                 mimeinfo->description = NULL;
1956
1957         if (content_id != NULL)
1958                 mimeinfo->id = g_strdup(content_id);
1959         else
1960                 mimeinfo->id = NULL;
1961
1962         if (content_location != NULL)
1963                 mimeinfo->location = g_strdup(content_location);
1964         else
1965                 mimeinfo->location = NULL;
1966
1967         if (content_disposition != NULL)
1968                 procmime_parse_content_disposition(content_disposition, mimeinfo);
1969         else
1970                 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
1971
1972         /* Call parser for mime type */
1973         if ((parser = procmime_get_mimeparser_for_type(mimeinfo->type, mimeinfo->subtype)) != NULL) {
1974                 parsed = procmime_mimeparser_parse(parser, mimeinfo);
1975         }
1976         if (!parsed) {
1977                 switch (mimeinfo->type) {
1978                 case MIMETYPE_TEXT:
1979                         if (g_ascii_strcasecmp(mimeinfo->subtype, "plain") == 0 && short_scan) {
1980                                 return 1;
1981                         }
1982                         break;
1983
1984                 case MIMETYPE_MESSAGE:
1985                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
1986                                 procmime_parse_message_rfc822(mimeinfo, short_scan);
1987                         }
1988                         if (g_ascii_strcasecmp(mimeinfo->subtype, "disposition-notification") == 0) {
1989                                 procmime_parse_disposition_notification(mimeinfo,
1990                                         original_msgid, disposition_notification_hdr, short_scan);
1991                         }
1992                         break;
1993
1994                 case MIMETYPE_MULTIPART:
1995                         procmime_parse_multipart(mimeinfo, short_scan);
1996                         break;
1997
1998                 case MIMETYPE_APPLICATION:
1999                         if (g_ascii_strcasecmp(mimeinfo->subtype, "octet-stream") == 0
2000                         && original_msgid && *original_msgid
2001                         && disposition_notification_hdr && *disposition_notification_hdr) {
2002                                 procmime_parse_disposition_notification(mimeinfo,
2003                                         original_msgid, disposition_notification_hdr, short_scan);
2004                         }
2005                         break;
2006                 default:
2007                         break;
2008                 }
2009         }
2010
2011         return result;
2012 }
2013
2014 static gchar *typenames[] = {
2015     "text",
2016     "image",
2017     "audio",
2018     "video",
2019     "application",
2020     "message",
2021     "multipart",
2022     "unknown",
2023 };
2024
2025 static gboolean output_func(GNode *node, gpointer data)
2026 {
2027         guint i, depth;
2028         MimeInfo *mimeinfo = (MimeInfo *) node->data;
2029
2030         depth = g_node_depth(node);
2031         for (i = 0; i < depth; i++)
2032                 g_print("    ");
2033         g_print("%s/%s (offset:%d length:%d encoding: %d)\n", typenames[mimeinfo->type], mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
2034
2035         return FALSE;
2036 }
2037
2038 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
2039 {
2040         g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
2041 }
2042
2043 static MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset, gboolean short_scan)
2044 {
2045         MimeInfo *mimeinfo;
2046         struct stat buf;
2047
2048         g_stat(filename, &buf);
2049
2050         mimeinfo = procmime_mimeinfo_new();
2051         mimeinfo->content = MIMECONTENT_FILE;
2052         mimeinfo->encoding_type = ENC_UNKNOWN;
2053         mimeinfo->type = MIMETYPE_MESSAGE;
2054         mimeinfo->subtype = g_strdup("rfc822");
2055         mimeinfo->data.filename = g_strdup(filename);
2056         mimeinfo->offset = offset;
2057         mimeinfo->length = buf.st_size - offset;
2058
2059         procmime_parse_message_rfc822(mimeinfo, short_scan);
2060         if (debug_get_mode())
2061                 output_mime_structure(mimeinfo, 0);
2062
2063         return mimeinfo;
2064 }
2065
2066 static MimeInfo *procmime_scan_file_full(const gchar *filename, gboolean short_scan)
2067 {
2068         MimeInfo *mimeinfo;
2069
2070         cm_return_val_if_fail(filename != NULL, NULL);
2071
2072         mimeinfo = procmime_scan_file_with_offset(filename, 0, short_scan);
2073
2074         return mimeinfo;
2075 }
2076
2077 MimeInfo *procmime_scan_file(const gchar *filename)
2078 {
2079         return procmime_scan_file_full(filename, FALSE);
2080 }
2081
2082 static MimeInfo *procmime_scan_file_short(const gchar *filename)
2083 {
2084         return procmime_scan_file_full(filename, TRUE);
2085 }
2086
2087 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan)
2088 {
2089         FILE *fp;
2090         MimeInfo *mimeinfo;
2091         gchar buf[BUFFSIZE];
2092         gint offset = 0;
2093
2094         cm_return_val_if_fail(filename != NULL, NULL);
2095
2096         /* Open file */
2097         if ((fp = g_fopen(filename, "rb")) == NULL)
2098                 return NULL;
2099         /* Skip queue header */
2100         while (fgets(buf, sizeof(buf), fp) != NULL) {
2101                 /* new way */
2102                 if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
2103                         strlen("X-Claws-End-Special-Headers:"))) ||
2104                    (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
2105                         strlen("X-Sylpheed-End-Special-Headers:"))))
2106                         break;
2107                 /* old way */
2108                 if (buf[0] == '\r' || buf[0] == '\n') break;
2109                 /* from other mailers */
2110                 if (!strncmp(buf, "Date: ", 6)
2111                 ||  !strncmp(buf, "To: ", 4)
2112                 ||  !strncmp(buf, "From: ", 6)
2113                 ||  !strncmp(buf, "Subject: ", 9)) {
2114                         rewind(fp);
2115                         break;
2116                 }
2117         }
2118         offset = ftell(fp);
2119         fclose(fp);
2120
2121         mimeinfo = procmime_scan_file_with_offset(filename, offset, short_scan);
2122
2123         return mimeinfo;
2124 }
2125
2126 MimeInfo *procmime_scan_queue_file(const gchar *filename)
2127 {
2128         return procmime_scan_queue_file_full(filename, FALSE);
2129 }
2130
2131 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename)
2132 {
2133         return procmime_scan_queue_file_full(filename, TRUE);
2134 }
2135
2136 typedef enum {
2137     ENC_AS_TOKEN,
2138     ENC_AS_QUOTED_STRING,
2139     ENC_AS_EXTENDED,
2140     ENC_AS_ENCWORD
2141 } EncodeAs;
2142
2143 typedef struct _ParametersData {
2144         FILE *fp;
2145         guint len;
2146         gint error;
2147 } ParametersData;
2148
2149 static void write_parameters(gpointer key, gpointer value, gpointer user_data)
2150 {
2151         gchar *param = key;
2152         gchar *val = value, *valpos, *tmp;
2153         ParametersData *pdata = (ParametersData *)user_data;
2154         GString *buf = g_string_new("");
2155         gint len;
2156
2157         EncodeAs encas = ENC_AS_TOKEN;
2158
2159         for (valpos = val; *valpos != 0; valpos++) {
2160                 if (!IS_ASCII(*valpos)) {
2161                         encas = ENC_AS_ENCWORD;
2162                         break;
2163                 }
2164
2165                 /* CTLs */
2166                 if (((*valpos >= 0) && (*valpos < 037)) || (*valpos == 0177)) {
2167                         encas = ENC_AS_QUOTED_STRING;
2168                         continue;
2169                 }
2170
2171                 /* tspecials + SPACE */
2172                 switch (*valpos) {
2173                 case ' ':
2174                 case '(':
2175                 case ')':
2176                 case '<':
2177                 case '>':
2178                 case '@':
2179                 case ',':
2180                 case ';':
2181                 case ':':
2182                 case '\\':
2183                 case '"':
2184                 case '/':
2185                 case '[':
2186                 case ']':
2187                 case '?':
2188                 case '=':
2189                         encas = ENC_AS_QUOTED_STRING;
2190                         continue;
2191                 }
2192         }
2193
2194         switch (encas) {
2195         case ENC_AS_TOKEN:
2196                 g_string_append_printf(buf, "%s=%s", param, val);
2197                 break;
2198
2199         case ENC_AS_QUOTED_STRING:
2200                 g_string_append_printf(buf, "%s=\"%s\"", param, val);
2201                 break;
2202
2203 #if 0 /* we don't use that for now */
2204         case ENC_AS_EXTENDED:
2205                 if (!g_utf8_validate(val, -1, NULL))
2206                         g_string_append_printf(buf, "%s*=%s''", param,
2207                                 conv_get_locale_charset_str());
2208                 else
2209                         g_string_append_printf(buf, "%s*=%s''", param,
2210                                 CS_INTERNAL);
2211                 for (valpos = val; *valpos != '\0'; valpos++) {
2212                         if (IS_ASCII(*valpos) && isalnum(*valpos)) {
2213                                 g_string_append_printf(buf, "%c", *valpos);
2214                         } else {
2215                                 gchar hexstr[3] = "XX";
2216                                 get_hex_str(hexstr, *valpos);
2217                                 g_string_append_printf(buf, "%%%s", hexstr);
2218                         }
2219                 }
2220                 break;
2221 #else
2222         case ENC_AS_EXTENDED:
2223                 debug_print("Unhandled ENC_AS_EXTENDED.");
2224                 break;
2225 #endif
2226         case ENC_AS_ENCWORD:
2227                 len = MAX(strlen(val)*6, 512);
2228                 tmp = g_malloc(len+1);
2229                 codeconv_set_strict(TRUE);
2230                 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2231                         prefs_common.outgoing_charset);
2232                 codeconv_set_strict(FALSE);
2233                 if (!tmp || !*tmp) {
2234                         codeconv_set_strict(TRUE);
2235                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2236                                 conv_get_outgoing_charset_str());
2237                         codeconv_set_strict(FALSE);
2238                 }
2239                 if (!tmp || !*tmp) {
2240                         codeconv_set_strict(TRUE);
2241                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2242                                 CS_UTF_8);
2243                         codeconv_set_strict(FALSE);
2244                 }
2245                 if (!tmp || !*tmp) {
2246                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2247                                 CS_UTF_8);
2248                 }
2249                 g_string_append_printf(buf, "%s=\"%s\"", param, tmp);
2250                 g_free(tmp);
2251                 break;
2252
2253         }
2254
2255         if (buf->str && strlen(buf->str)) {
2256                 tmp = strstr(buf->str, "\n");
2257                 if (tmp)
2258                         len = (tmp - buf->str);
2259                 else
2260                         len = strlen(buf->str);
2261                 if (pdata->len + len > 76) {
2262                         if (fprintf(pdata->fp, ";\n %s", buf->str) < 0)
2263                                 pdata->error = TRUE;
2264                         pdata->len = strlen(buf->str) + 1;
2265                 } else {
2266                         if (fprintf(pdata->fp, "; %s", buf->str) < 0)
2267                                 pdata->error = TRUE;
2268                         pdata->len += strlen(buf->str) + 2;
2269                 }
2270         }
2271         g_string_free(buf, TRUE);
2272 }
2273
2274 #define TRY(func) { \
2275         if (!(func)) { \
2276                 return -1; \
2277         } \
2278 }
2279
2280 int procmime_write_mime_header(MimeInfo *mimeinfo, FILE *fp)
2281 {
2282         struct TypeTable *type_table;
2283         ParametersData *pdata = g_new0(ParametersData, 1);
2284         debug_print("procmime_write_mime_header\n");
2285
2286         pdata->fp = fp;
2287         pdata->error = FALSE;
2288         for (type_table = mime_type_table; type_table->str != NULL; type_table++)
2289                 if (mimeinfo->type == type_table->type) {
2290                         gchar *buf = g_strdup_printf(
2291                                 "Content-Type: %s/%s", type_table->str, mimeinfo->subtype);
2292                         if (fprintf(fp, "%s", buf) < 0) {
2293                                 g_free(buf);
2294                                 g_free(pdata);
2295                                 return -1;
2296                         }
2297                         pdata->len = strlen(buf);
2298                         g_free(buf);
2299                         break;
2300                 }
2301         g_hash_table_foreach(mimeinfo->typeparameters, write_parameters, pdata);
2302         if (pdata->error == TRUE) {
2303                 g_free(pdata);
2304                 return -1;
2305         }
2306         g_free(pdata);
2307
2308         TRY(fprintf(fp, "\n") >= 0);
2309
2310         if (mimeinfo->encoding_type != ENC_UNKNOWN)
2311                 TRY(fprintf(fp, "Content-Transfer-Encoding: %s\n", procmime_get_encoding_str(mimeinfo->encoding_type)) >= 0);
2312
2313         if (mimeinfo->description != NULL)
2314                 TRY(fprintf(fp, "Content-Description: %s\n", mimeinfo->description) >= 0);
2315
2316         if (mimeinfo->id != NULL)
2317                 TRY(fprintf(fp, "Content-ID: %s\n", mimeinfo->id) >= 0);
2318
2319         if (mimeinfo->location != NULL)
2320                 TRY(fprintf(fp, "Content-Location: %s\n", mimeinfo->location) >= 0);
2321
2322         if (mimeinfo->disposition != DISPOSITIONTYPE_UNKNOWN) {
2323                 ParametersData *pdata = g_new0(ParametersData, 1);
2324                 gchar *buf = NULL;
2325                 if (mimeinfo->disposition == DISPOSITIONTYPE_INLINE)
2326                         buf = g_strdup("Content-Disposition: inline");
2327                 else if (mimeinfo->disposition == DISPOSITIONTYPE_ATTACHMENT)
2328                         buf = g_strdup("Content-Disposition: attachment");
2329                 else
2330                         buf = g_strdup("Content-Disposition: unknown");
2331
2332                 if (fprintf(fp, "%s", buf) < 0) {
2333                         g_free(buf);
2334                         g_free(pdata);
2335                         return -1;
2336                 }
2337                 pdata->len = strlen(buf);
2338                 g_free(buf);
2339
2340                 pdata->fp = fp;
2341                 pdata->error = FALSE;
2342                 g_hash_table_foreach(mimeinfo->dispositionparameters, write_parameters, pdata);
2343                 if (pdata->error == TRUE) {
2344                         g_free(pdata);
2345                         return -1;
2346                 }
2347                 g_free(pdata);
2348                 TRY(fprintf(fp, "\n") >= 0);
2349         }
2350
2351         TRY(fprintf(fp, "\n") >= 0);
2352
2353         return 0;
2354 }
2355
2356 static gint procmime_write_message_rfc822(MimeInfo *mimeinfo, FILE *fp)
2357 {
2358         FILE *infp;
2359         GNode *childnode;
2360         MimeInfo *child;
2361         gchar buf[BUFFSIZE];
2362         gboolean skip = FALSE;;
2363         size_t len;
2364
2365         debug_print("procmime_write_message_rfc822\n");
2366
2367         /* write header */
2368         switch (mimeinfo->content) {
2369         case MIMECONTENT_FILE:
2370                 if ((infp = g_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2371                         FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2372                         return -1;
2373                 }
2374                 fseek(infp, mimeinfo->offset, SEEK_SET);
2375                 while (fgets(buf, sizeof(buf), infp) == buf) {
2376                         strcrchomp(buf);
2377                         if (buf[0] == '\n' && buf[1] == '\0')
2378                                 break;
2379                         if (skip && (buf[0] == ' ' || buf[0] == '\t'))
2380                                 continue;
2381                         if (g_ascii_strncasecmp(buf, "Mime-Version:", 13) == 0 ||
2382                             g_ascii_strncasecmp(buf, "Content-Type:", 13) == 0 ||
2383                             g_ascii_strncasecmp(buf, "Content-Transfer-Encoding:", 26) == 0 ||
2384                             g_ascii_strncasecmp(buf, "Content-Description:", 20) == 0 ||
2385                             g_ascii_strncasecmp(buf, "Content-ID:", 11) == 0 ||
2386                             g_ascii_strncasecmp(buf, "Content-Location:", 17) == 0 ||
2387                             g_ascii_strncasecmp(buf, "Content-Disposition:", 20) == 0) {
2388                                 skip = TRUE;
2389                                 continue;
2390                         }
2391                         len = strlen(buf);
2392                         if (fwrite(buf, sizeof(gchar), len, fp) < len) {
2393                                 g_warning("failed to dump %zd bytes from file", len);
2394                                 fclose(infp);
2395                                 return -1;
2396                         }
2397                         skip = FALSE;
2398                 }
2399                 fclose(infp);
2400                 break;
2401
2402         case MIMECONTENT_MEM:
2403                 len = strlen(mimeinfo->data.mem);
2404                 if (fwrite(mimeinfo->data.mem, sizeof(gchar), len, fp) < len) {
2405                         g_warning("failed to dump %zd bytes from mem", len);
2406                         return -1;
2407                 }
2408                 break;
2409
2410         default:
2411                 break;
2412         }
2413
2414         childnode = mimeinfo->node->children;
2415         if (childnode == NULL)
2416                 return -1;
2417
2418         child = (MimeInfo *) childnode->data;
2419         if (fprintf(fp, "Mime-Version: 1.0\n") < 0) {
2420                 g_warning("failed to write mime version");
2421                 return -1;
2422         }
2423         if (procmime_write_mime_header(child, fp) < 0)
2424                 return -1;
2425         return procmime_write_mimeinfo(child, fp);
2426 }
2427
2428 static gint procmime_write_multipart(MimeInfo *mimeinfo, FILE *fp)
2429 {
2430         FILE *infp;
2431         GNode *childnode;
2432         gchar *boundary, *str, *str2;
2433         gchar buf[BUFFSIZE];
2434         gboolean firstboundary;
2435         size_t len;
2436
2437         debug_print("procmime_write_multipart\n");
2438
2439         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
2440
2441         switch (mimeinfo->content) {
2442         case MIMECONTENT_FILE:
2443                 if ((infp = g_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2444                         FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2445                         return -1;
2446                 }
2447                 fseek(infp, mimeinfo->offset, SEEK_SET);
2448                 while (fgets(buf, sizeof(buf), infp) == buf) {
2449                         if (IS_BOUNDARY(buf, boundary, strlen(boundary)))
2450                                 break;
2451                         len = strlen(buf);
2452                         if (fwrite(buf, sizeof(gchar), len, fp) < len) {
2453                                 g_warning("failed to write %zd", len);
2454                                 fclose(infp);
2455                                 return -1;
2456                         }
2457                 }
2458                 fclose(infp);
2459                 break;
2460
2461         case MIMECONTENT_MEM:
2462                 str = g_strdup(mimeinfo->data.mem);
2463                 if (((str2 = strstr(str, boundary)) != NULL) && ((str2 - str) >= 2) &&
2464                     (*(str2 - 1) == '-') && (*(str2 - 2) == '-'))
2465                         *(str2 - 2) = '\0';
2466                 len = strlen(str);
2467                 if (fwrite(str, sizeof(gchar), len, fp) < len) {
2468                         g_warning("failed to write %zd from mem", len);
2469                         g_free(str);
2470                         return -1;
2471                 }
2472                 g_free(str);
2473                 break;
2474
2475         default:
2476                 break;
2477         }
2478
2479         childnode = mimeinfo->node->children;
2480         firstboundary = TRUE;
2481         while (childnode != NULL) {
2482                 MimeInfo *child = childnode->data;
2483
2484                 if (firstboundary)
2485                         firstboundary = FALSE;
2486                 else
2487                         TRY(fprintf(fp, "\n") >= 0);
2488
2489                 TRY(fprintf(fp, "--%s\n", boundary) >= 0);
2490
2491                 if (procmime_write_mime_header(child, fp) < 0)
2492                         return -1;
2493                 if (procmime_write_mimeinfo(child, fp) < 0)
2494                         return -1;
2495
2496                 childnode = g_node_next_sibling(childnode);
2497         }
2498         TRY(fprintf(fp, "\n--%s--\n", boundary) >= 0);
2499
2500         return 0;
2501 }
2502
2503 gint procmime_write_mimeinfo(MimeInfo *mimeinfo, FILE *fp)
2504 {
2505         FILE *infp;
2506         size_t len;
2507         debug_print("procmime_write_mimeinfo\n");
2508
2509         if (G_NODE_IS_LEAF(mimeinfo->node)) {
2510                 switch (mimeinfo->content) {
2511                 case MIMECONTENT_FILE:
2512                         if ((infp = g_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2513                                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2514                                 return -1;
2515                         }
2516                         copy_file_part_to_fp(infp, mimeinfo->offset, mimeinfo->length, fp);
2517                         fclose(infp);
2518                         return 0;
2519
2520                 case MIMECONTENT_MEM:
2521                         len = strlen(mimeinfo->data.mem);
2522                         if (fwrite(mimeinfo->data.mem, sizeof(gchar), len, fp) < len)
2523                                 return -1;
2524                         return 0;
2525
2526                 default:
2527                         return 0;
2528                 }
2529         } else {
2530                 /* Call writer for mime type */
2531                 switch (mimeinfo->type) {
2532                 case MIMETYPE_MESSAGE:
2533                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2534                                 return procmime_write_message_rfc822(mimeinfo, fp);
2535                         }
2536                         break;
2537
2538                 case MIMETYPE_MULTIPART:
2539                         return procmime_write_multipart(mimeinfo, fp);
2540
2541                 default:
2542                         break;
2543                 }
2544
2545                 return -1;
2546         }
2547
2548         return 0;
2549 }
2550
2551 gchar *procmime_get_part_file_name(MimeInfo *mimeinfo)
2552 {
2553         gchar *base;
2554
2555         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
2556                 base = g_strdup("mimetmp.html");
2557         else {
2558                 const gchar *basetmp;
2559                 gchar *basename;
2560
2561                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
2562                 if (basetmp == NULL)
2563                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
2564                 if (basetmp == NULL)
2565                         basetmp = "mimetmp";
2566                 basename = g_path_get_basename(basetmp);
2567                 if (*basename == '\0') {
2568                         g_free(basename);
2569                         basename = g_strdup("mimetmp");
2570                 }
2571                 base = conv_filename_from_utf8(basename);
2572                 g_free(basename);
2573                 subst_for_shellsafe_filename(base);
2574         }
2575
2576         return base;
2577 }
2578