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