src/procmime.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2016 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 #ifdef HAVE_CONFIG_H
  20 #  include "config.h"
  21 #include "claws-features.h"
  22 #endif
  23
  24 #include <stdio.h>
  25
  26 #include "defs.h"
  27
  28 #include <glib.h>
  29 #include <glib/gi18n.h>
  30 #include <string.h>
  31 #if HAVE_LOCALE_H
  32 #  include <locale.h>
  33 #endif
  34 #include <ctype.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <unistd.h>
  38 #include <errno.h>
  39
  40 #include "procmime.h"
  41 #include "procheader.h"
  42 #include "quoted-printable.h"
  43 #include "uuencode.h"
  44 #include "unmime.h"
  45 #include "html.h"
  46 #include "enriched.h"
  47 #include "codeconv.h"
  48 #include "utils.h"
  49 #include "prefs_common.h"
  50 #include "prefs_gtk.h"
  51 #include "alertpanel.h"
  52 #include "timing.h"
  53 #include "privacy.h"
  54 #include "account.h"
  55 #include "file-utils.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
  68         mimeinfo->content        = MIMECONTENT_EMPTY;
  69         mimeinfo->data.filename  = NULL;
  70
  71         mimeinfo->type           = MIMETYPE_UNKNOWN;
  72         mimeinfo->encoding_type  = ENC_UNKNOWN;
  73         mimeinfo->typeparameters = g_hash_table_new(g_str_hash, g_str_equal);
  74
  75         mimeinfo->disposition    = DISPOSITIONTYPE_UNKNOWN;
  76         mimeinfo->dispositionparameters
  77                                  = g_hash_table_new(g_str_hash, g_str_equal);
  78
  79         mimeinfo->node           = g_node_new(mimeinfo);
  80
  81         return mimeinfo;
  82 }
  83
  84 static gboolean procmime_mimeinfo_parameters_destroy(gpointer key, gpointer value, gpointer user_data)
  85 {
  86         g_free(key);
  87         g_free(value);
  88
  89         return TRUE;
  90 }
  91
  92 static gchar *forced_charset = NULL;
  93
  94 void procmime_force_charset(const gchar *str)
  95 {
  96         g_free(forced_charset);
  97         forced_charset = NULL;
  98         if (str)
  99                 forced_charset = g_strdup(str);
 100 }
 101
 102 static EncodingType forced_encoding = 0;
 103
 104 void procmime_force_encoding(EncodingType encoding)
 105 {
 106         forced_encoding = encoding;
 107 }
 108
 109 static gboolean free_func(GNode *node, gpointer data)
 110 {
 111         MimeInfo *mimeinfo = (MimeInfo *) node->data;
 112
 113         switch (mimeinfo->content) {
 114         case MIMECONTENT_FILE:
 115                 if (mimeinfo->tmp)
 116                         claws_unlink(mimeinfo->data.filename);
 117                 g_free(mimeinfo->data.filename);
 118                 break;
 119
 120         case MIMECONTENT_MEM:
 121                 if (mimeinfo->tmp)
 122                         g_free(mimeinfo->data.mem);
 123         default:
 124                 break;
 125         }
 126
 127         g_free(mimeinfo->subtype);
 128         g_free(mimeinfo->description);
 129         g_free(mimeinfo->id);
 130         g_free(mimeinfo->location);
 131
 132         g_hash_table_foreach_remove(mimeinfo->typeparameters,
 133                 procmime_mimeinfo_parameters_destroy, NULL);
 134         g_hash_table_destroy(mimeinfo->typeparameters);
 135         g_hash_table_foreach_remove(mimeinfo->dispositionparameters,
 136                 procmime_mimeinfo_parameters_destroy, NULL);
 137         g_hash_table_destroy(mimeinfo->dispositionparameters);
 138
 139         if (mimeinfo->privacy)
 140                 privacy_free_privacydata(mimeinfo->privacy);
 141
 142         g_free(mimeinfo);
 143
 144         return FALSE;
 145 }
 146
 147 void procmime_mimeinfo_free_all(MimeInfo **mimeinfo_ptr)
 148 {
 149         MimeInfo *mimeinfo = *mimeinfo_ptr;
 150         GNode *node;
 151
 152         if (!mimeinfo)
 153                 return;
 154
 155         node = mimeinfo->node;
 156         g_node_traverse(node, G_IN_ORDER, G_TRAVERSE_ALL, -1, free_func, NULL);
 157
 158         g_node_destroy(node);
 159
 160         *mimeinfo_ptr = NULL;
 161 }
 162
 163 MimeInfo *procmime_mimeinfo_parent(MimeInfo *mimeinfo)
 164 {
 165         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 166         cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
 167
 168         if (mimeinfo->node->parent == NULL)
 169                 return NULL;
 170         return (MimeInfo *) mimeinfo->node->parent->data;
 171 }
 172
 173 MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
 174 {
 175         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 176         cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
 177
 178         if (mimeinfo->node->children)
 179                 return (MimeInfo *) mimeinfo->node->children->data;
 180         if (mimeinfo->node->next)
 181                 return (MimeInfo *) mimeinfo->node->next->data;
 182
 183         if (mimeinfo->node->parent == NULL)
 184                 return NULL;
 185
 186         while (mimeinfo->node->parent != NULL) {
 187                 mimeinfo = (MimeInfo *) mimeinfo->node->parent->data;
 188                 if (mimeinfo->node->next)
 189                         return (MimeInfo *) mimeinfo->node->next->data;
 190         }
 191
 192         return NULL;
 193 }
 194
 195 MimeInfo *procmime_scan_message(MsgInfo *msginfo)
 196 {
 197         gchar *filename;
 198         MimeInfo *mimeinfo;
 199
 200         filename = procmsg_get_message_file_path(msginfo);
 201         if (!filename || !is_file_exist(filename)) {
 202                 g_free(filename);
 203                 return NULL;
 204         }
 205
 206         if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
 207             !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
 208                 mimeinfo = procmime_scan_file(filename);
 209         else
 210                 mimeinfo = procmime_scan_queue_file(filename);
 211         g_free(filename);
 212
 213         return mimeinfo;
 214 }
 215
 216 MimeInfo *procmime_scan_message_short(MsgInfo *msginfo)
 217 {
 218         gchar *filename;
 219         MimeInfo *mimeinfo;
 220
 221         filename = procmsg_get_message_file_path(msginfo);
 222         if (!filename || !is_file_exist(filename)) {
 223                 g_free(filename);
 224                 return NULL;
 225         }
 226
 227         if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
 228             !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
 229                 mimeinfo = procmime_scan_file_short(filename);
 230         else
 231                 mimeinfo = procmime_scan_queue_file_short(filename);
 232         g_free(filename);
 233
 234         return mimeinfo;
 235 }
 236
 237 enum
 238 {
 239         H_CONTENT_TRANSFER_ENCODING = 0,
 240         H_CONTENT_TYPE              = 1,
 241         H_CONTENT_DISPOSITION       = 2,
 242         H_CONTENT_DESCRIPTION       = 3,
 243         H_SUBJECT                   = 4
 244 };
 245
 246 const gchar *procmime_mimeinfo_get_parameter(MimeInfo *mimeinfo, const gchar *name)
 247 {
 248         const gchar *value;
 249
 250         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 251         cm_return_val_if_fail(name != NULL, NULL);
 252
 253         value = g_hash_table_lookup(mimeinfo->dispositionparameters, name);
 254         if (value == NULL)
 255                 value = g_hash_table_lookup(mimeinfo->typeparameters, name);
 256
 257         return value;
 258 }
 259
 260 #define FLUSH_LASTLINE() {                                                      \
 261         if (*lastline != '\0') {                                                \
 262                 gint llen = 0;                                                  \
 263                 strretchomp(lastline);                                          \
 264                 llen = strlen(lastline);                                        \
 265                 if (lastline[llen-1] == ' ' && !account_signatures_matchlist_str_found(lastline, "%s") &&       \
 266                     !(llen == 2 && lastline[1] == ' ' && strchr(prefs_common.quote_chars, lastline[0]))) {                                      \
 267                         /* this is flowed */                                    \
 268                         if (delsp)                                              \
 269                                 lastline[llen-1] = '\0';                        \
 270                         if (claws_fputs(lastline, outfp) == EOF)                        \
 271                                 err = TRUE;                                     \
 272                 } else {                                                        \
 273                         if (claws_fputs(lastline, outfp) == EOF)                        \
 274                                 err = TRUE;                                     \
 275                         if (claws_fputs("\n", outfp) == EOF)                            \
 276                                 err = TRUE;                                     \
 277                 }                                                               \
 278         }                                                                       \
 279         strcpy(lastline, buf);                                                  \
 280 }
 281
 282 gboolean procmime_decode_content(MimeInfo *mimeinfo)
 283 {
 284         gchar buf[BUFFSIZE];
 285         gint readend;
 286         gchar *tmpfilename;
 287         FILE *outfp, *infp;
 288         GStatBuf statbuf;
 289         gboolean tmp_file = FALSE;
 290         gboolean flowed = FALSE;
 291         gboolean delsp = FALSE;
 292         gboolean err = FALSE;
 293         gint state = 0;
 294         guint save = 0;
 295
 296         cm_return_val_if_fail(mimeinfo != NULL, FALSE);
 297
 298         EncodingType encoding = forced_encoding
 299                                 ? forced_encoding
 300                                 : mimeinfo->encoding_type;
 301         gchar lastline[BUFFSIZE];
 302         memset(lastline, 0, BUFFSIZE);
 303
 304         if (prefs_common.respect_flowed_format &&
 305             mimeinfo->type == MIMETYPE_TEXT &&
 306             !strcasecmp(mimeinfo->subtype, "plain")) {
 307                 if (procmime_mimeinfo_get_parameter(mimeinfo, "format") != NULL &&
 308                     !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "format"),"flowed"))
 309                         flowed = TRUE;
 310                 if (flowed &&
 311                     procmime_mimeinfo_get_parameter(mimeinfo, "delsp") != NULL &&
 312                     !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "delsp"),"yes"))
 313                         delsp = TRUE;
 314         }
 315
 316         if (!flowed && (
 317              encoding == ENC_UNKNOWN ||
 318              encoding == ENC_BINARY ||
 319              encoding == ENC_7BIT ||
 320              encoding == ENC_8BIT
 321             ))
 322                 return TRUE;
 323
 324         if (mimeinfo->type == MIMETYPE_MULTIPART || mimeinfo->type == MIMETYPE_MESSAGE)
 325                 return TRUE;
 326
 327         if (mimeinfo->data.filename == NULL)
 328                 return FALSE;
 329
 330         infp = claws_fopen(mimeinfo->data.filename, "rb");
 331         if (!infp) {
 332                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
 333                 return FALSE;
 334         }
 335         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
 336                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
 337                 claws_fclose(infp);
 338                 return FALSE;
 339         }
 340
 341         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 342         if (!outfp) {
 343                 perror("tmpfile");
 344                 claws_fclose(infp);
 345                 return FALSE;
 346         }
 347
 348         tmp_file = TRUE;
 349         readend = mimeinfo->offset + mimeinfo->length;
 350
 351         account_signatures_matchlist_create(); /* FLUSH_LASTLINE will use it */
 352
 353         *buf = '\0';
 354         if (encoding == ENC_QUOTED_PRINTABLE) {
 355                 while ((ftell(infp) < readend) && (claws_fgets(buf, sizeof(buf), infp) != NULL)) {
 356                         gint len;
 357                         len = qp_decode_line(buf);
 358                         buf[len] = '\0';
 359                         if (!flowed) {
 360                                 if (claws_fwrite(buf, 1, len, outfp) < len)
 361                                         err = TRUE;
 362                         } else {
 363                                 FLUSH_LASTLINE();
 364                         }
 365                 }
 366                 if (flowed)
 367                         FLUSH_LASTLINE();
 368         } else if (encoding == ENC_BASE64) {
 369                 gchar outbuf[BUFFSIZE];
 370                 gint len, inlen, inread;
 371                 gboolean got_error = FALSE;
 372                 gboolean uncanonicalize = FALSE;
 373                 FILE *tmpfp = NULL;
 374                 gboolean null_bytes = FALSE;
 375                 gboolean starting = TRUE;
 376
 377                 if (mimeinfo->type == MIMETYPE_TEXT ||
 378                     mimeinfo->type == MIMETYPE_MESSAGE) {
 379                         uncanonicalize = TRUE;
 380                         tmpfp = my_tmpfile();
 381                         if (!tmpfp) {
 382                                 perror("my_tmpfile");
 383                                 if (tmp_file)
 384                                         claws_fclose(outfp);
 385                                 claws_fclose(infp);
 386                                 return FALSE;
 387                         }
 388                 } else
 389                         tmpfp = outfp;
 390
 391                 while ((inlen = MIN(readend - ftell(infp), sizeof(buf))) > 0 && !err) {
 392                         inread = claws_fread(buf, 1, inlen, infp);
 393                         len = g_base64_decode_step(buf, inlen, outbuf, &state, &save);
 394                         if (uncanonicalize == TRUE && strlen(outbuf) < len && starting) {
 395                                 uncanonicalize = FALSE;
 396                                 null_bytes = TRUE;
 397                         }
 398                         starting = FALSE;
 399                         if (((inread != inlen) || len < 0) && !got_error) {
 400                                 g_warning("Bad BASE64 content.");
 401                                 if (claws_fwrite(_("[Error decoding BASE64]\n"),
 402                                         sizeof(gchar),
 403                                         strlen(_("[Error decoding BASE64]\n")),
 404                                         tmpfp) < strlen(_("[Error decoding BASE64]\n")))
 405                                         g_warning("error decoding BASE64");
 406                                 got_error = TRUE;
 407                                 continue;
 408                         } else if (len >= 0) {
 409                                 /* print out the error message only once
 410                                  * per block */
 411                                 if (null_bytes) {
 412                                         /* we won't uncanonicalize, output to outfp directly */
 413                                         if (claws_fwrite(outbuf, sizeof(gchar), len, outfp) < len)
 414                                                 err = TRUE;
 415                                 } else {
 416                                         if (claws_fwrite(outbuf, sizeof(gchar), len, tmpfp) < len)
 417                                                 err = TRUE;
 418                                 }
 419                                 got_error = FALSE;
 420                         }
 421                 }
 422
 423                 if (uncanonicalize) {
 424                         rewind(tmpfp);
 425                         while (claws_fgets(buf, sizeof(buf), tmpfp) != NULL) {
 426                                 strcrchomp(buf);
 427                                 if (claws_fputs(buf, outfp) == EOF)
 428                                         err = TRUE;
 429                         }
 430                 }
 431                 if (tmpfp != outfp) {
 432                         claws_fclose(tmpfp);
 433                 }
 434         } else if (encoding == ENC_X_UUENCODE) {
 435                 gchar outbuf[BUFFSIZE];
 436                 gint len;
 437                 gboolean flag = FALSE;
 438
 439                 while ((ftell(infp) < readend) && (claws_fgets(buf, sizeof(buf), infp) != NULL)) {
 440                         if (!flag && strncmp(buf,"begin ", 6)) continue;
 441
 442                         if (flag) {
 443                                 len = fromuutobits(outbuf, buf);
 444                                 if (len <= 0) {
 445                                         if (len < 0)
 446                                                 g_warning("Bad UUENCODE content (%d)", len);
 447                                         break;
 448                                 }
 449                                 if (claws_fwrite(outbuf, sizeof(gchar), len, outfp) < len)
 450                                         err = TRUE;
 451                         } else
 452                                 flag = TRUE;
 453                 }
 454         } else {
 455                 while ((ftell(infp) < readend) && (claws_fgets(buf, sizeof(buf), infp) != NULL)) {
 456                         if (!flowed) {
 457                                 if (claws_fputs(buf, outfp) == EOF)
 458                                         err = TRUE;
 459                         } else {
 460                                 FLUSH_LASTLINE();
 461                         }
 462                 }
 463                 if (flowed)
 464                         FLUSH_LASTLINE();
 465                 if (err == TRUE)
 466                         g_warning("write error");
 467         }
 468
 469         claws_fclose(outfp);
 470         claws_fclose(infp);
 471
 472         account_signatures_matchlist_delete();
 473
 474         if (err == TRUE) {
 475                 return FALSE;
 476         }
 477
 478         if (g_stat(tmpfilename, &statbuf) < 0) {
 479                 FILE_OP_ERROR(tmpfilename, "stat");
 480                 return FALSE;
 481         }
 482
 483         if (mimeinfo->tmp)
 484                 claws_unlink(mimeinfo->data.filename);
 485         g_free(mimeinfo->data.filename);
 486         mimeinfo->data.filename = tmpfilename;
 487         mimeinfo->tmp = TRUE;
 488         mimeinfo->offset = 0;
 489         mimeinfo->length = statbuf.st_size;
 490         mimeinfo->encoding_type = ENC_BINARY;
 491
 492         return TRUE;
 493 }
 494
 495 #define B64_LINE_SIZE           57
 496 #define B64_BUFFSIZE            77
 497
 498 gboolean procmime_encode_content(MimeInfo *mimeinfo, EncodingType encoding)
 499 {
 500         FILE *infp = NULL, *outfp;
 501         gint len;
 502         gchar *tmpfilename;
 503         GStatBuf statbuf;
 504         gboolean err = FALSE;
 505
 506         if (mimeinfo->content == MIMECONTENT_EMPTY)
 507                 return TRUE;
 508
 509         if (mimeinfo->encoding_type != ENC_UNKNOWN &&
 510             mimeinfo->encoding_type != ENC_BINARY &&
 511             mimeinfo->encoding_type != ENC_7BIT &&
 512             mimeinfo->encoding_type != ENC_8BIT)
 513                 if(!procmime_decode_content(mimeinfo))
 514                         return FALSE;
 515
 516         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 517         if (!outfp) {
 518                 perror("tmpfile");
 519                 return FALSE;
 520         }
 521
 522         if (mimeinfo->content == MIMECONTENT_FILE && mimeinfo->data.filename) {
 523                 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
 524                         g_warning("Can't open file %s", mimeinfo->data.filename);
 525                         claws_fclose(outfp);
 526                         return FALSE;
 527                 }
 528         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 529                 infp = str_open_as_stream(mimeinfo->data.mem);
 530                 if (infp == NULL) {
 531                         claws_fclose(outfp);
 532                         return FALSE;
 533                 }
 534         } else {
 535                 claws_fclose(outfp);
 536                 g_warning("Unknown mimeinfo");
 537                 return FALSE;
 538         }
 539
 540         if (encoding == ENC_BASE64) {
 541                 gchar inbuf[B64_LINE_SIZE], *out;
 542                 FILE *tmp_fp = infp;
 543                 gchar *tmp_file = NULL;
 544
 545                 if (mimeinfo->type == MIMETYPE_TEXT ||
 546                      mimeinfo->type == MIMETYPE_MESSAGE) {
 547                         if (mimeinfo->content == MIMECONTENT_FILE) {
 548                                 tmp_file = get_tmp_file();
 549                                 if (canonicalize_file(mimeinfo->data.filename, tmp_file) < 0) {
 550                                         g_free(tmp_file);
 551                                         claws_fclose(infp);
 552                                         claws_fclose(outfp);
 553                                         return FALSE;
 554                                 }
 555                                 if ((tmp_fp = claws_fopen(tmp_file, "rb")) == NULL) {
 556                                         FILE_OP_ERROR(tmp_file, "claws_fopen");
 557                                         claws_unlink(tmp_file);
 558                                         g_free(tmp_file);
 559                                         claws_fclose(infp);
 560                                         claws_fclose(outfp);
 561                                         return FALSE;
 562                                 }
 563                         } else {
 564                                 gchar *out = canonicalize_str(mimeinfo->data.mem);
 565                                 claws_fclose(infp);
 566                                 infp = str_open_as_stream(out);
 567                                 tmp_fp = infp;
 568                                 g_free(out);
 569                                 if (infp == NULL) {
 570                                         claws_fclose(outfp);
 571                                         return FALSE;
 572                                 }
 573                         }
 574                 }
 575
 576                 while ((len = claws_fread(inbuf, sizeof(gchar),
 577                                     B64_LINE_SIZE, tmp_fp))
 578                        == B64_LINE_SIZE) {
 579                         out = g_base64_encode(inbuf, B64_LINE_SIZE);
 580                         if (claws_fputs(out, outfp) == EOF)
 581                                 err = TRUE;
 582                         g_free(out);
 583                         if (claws_fputc('\n', outfp) == EOF)
 584                                 err = TRUE;
 585                 }
 586                 if (len > 0 && claws_feof(tmp_fp)) {
 587                         out = g_base64_encode(inbuf, len);
 588                         if (claws_fputs(out, outfp) == EOF)
 589                                 err = TRUE;
 590                         g_free(out);
 591                         if (claws_fputc('\n', outfp) == EOF)
 592                                 err = TRUE;
 593                 }
 594
 595                 if (tmp_file) {
 596                         claws_fclose(tmp_fp);
 597                         claws_unlink(tmp_file);
 598                         g_free(tmp_file);
 599                 }
 600         } else if (encoding == ENC_QUOTED_PRINTABLE) {
 601                 gchar inbuf[BUFFSIZE], outbuf[BUFFSIZE * 4];
 602
 603                 while (claws_fgets(inbuf, sizeof(inbuf), infp) != NULL) {
 604                         qp_encode_line(outbuf, inbuf);
 605
 606                         if (!strncmp("From ", outbuf, sizeof("From ")-1)) {
 607                                 gchar *tmpbuf = outbuf;
 608
 609                                 tmpbuf += sizeof("From ")-1;
 610
 611                                 if (claws_fputs("=46rom ", outfp) == EOF)
 612                                         err = TRUE;
 613                                 if (claws_fputs(tmpbuf, outfp) == EOF)
 614                                         err = TRUE;
 615                         } else {
 616                                 if (claws_fputs(outbuf, outfp) == EOF)
 617                                         err = TRUE;
 618                         }
 619                 }
 620         } else {
 621                 gchar buf[BUFFSIZE];
 622
 623                 while (claws_fgets(buf, sizeof(buf), infp) != NULL) {
 624                         strcrchomp(buf);
 625                         if (claws_fputs(buf, outfp) == EOF)
 626                                 err = TRUE;
 627                 }
 628         }
 629
 630         claws_fclose(outfp);
 631         claws_fclose(infp);
 632
 633         if (err == TRUE)
 634                 return FALSE;
 635
 636         if (mimeinfo->content == MIMECONTENT_FILE) {
 637                 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
 638                         claws_unlink(mimeinfo->data.filename);
 639                 g_free(mimeinfo->data.filename);
 640         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 641                 if (mimeinfo->tmp && (mimeinfo->data.mem != NULL))
 642                         g_free(mimeinfo->data.mem);
 643         }
 644
 645         if (g_stat(tmpfilename, &statbuf) < 0) {
 646                 FILE_OP_ERROR(tmpfilename, "stat");
 647                 return FALSE;
 648         }
 649         mimeinfo->content = MIMECONTENT_FILE;
 650         mimeinfo->data.filename = tmpfilename;
 651         mimeinfo->tmp = TRUE;
 652         mimeinfo->offset = 0;
 653         mimeinfo->length = statbuf.st_size;
 654         mimeinfo->encoding_type = encoding;
 655
 656         return TRUE;
 657 }
 658
 659 static gint procmime_get_part_to_stream(FILE *outfp, MimeInfo *mimeinfo)
 660 {
 661         FILE *infp;
 662         gchar buf[BUFFSIZE];
 663         gint restlength, readlength;
 664         gint saved_errno = 0;
 665
 666         cm_return_val_if_fail(outfp != NULL, -1);
 667         cm_return_val_if_fail(mimeinfo != NULL, -1);
 668
 669         if (mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
 670                 return -EINVAL;
 671
 672         if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
 673                 saved_errno = errno;
 674                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
 675                 return -(saved_errno);
 676         }
 677         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
 678                 saved_errno = errno;
 679                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
 680                 claws_fclose(infp);
 681                 return -(saved_errno);
 682         }
 683
 684         restlength = mimeinfo->length;
 685
 686         while ((restlength > 0) && ((readlength = claws_fread(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
 687                 if (claws_fwrite(buf, 1, readlength, outfp) != readlength) {
 688                         saved_errno = errno;
 689                         claws_fclose(infp);
 690                         return -(saved_errno);
 691                 }
 692                 restlength -= readlength;
 693         }
 694
 695         claws_fclose(infp);
 696         rewind(outfp);
 697
 698         return 0;
 699 }
 700
 701 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
 702 {
 703         FILE *outfp;
 704         gint result;
 705         gint saved_errno = 0;
 706
 707         cm_return_val_if_fail(outfile != NULL, -1);
 708
 709         if ((outfp = claws_fopen(outfile, "wb")) == NULL) {
 710                 saved_errno = errno;
 711                 FILE_OP_ERROR(outfile, "claws_fopen");
 712                 return -(saved_errno);
 713         }
 714
 715         result = procmime_get_part_to_stream(outfp, mimeinfo);
 716
 717         if (claws_fclose(outfp) == EOF) {
 718                 saved_errno = errno;
 719                 FILE_OP_ERROR(outfile, "claws_fclose");
 720                 claws_unlink(outfile);
 721                 return -(saved_errno);
 722         }
 723
 724         return result;
 725 }
 726
 727 gboolean procmime_scan_text_content(MimeInfo *mimeinfo,
 728                 gboolean (*scan_callback)(const gchar *str, gpointer cb_data),
 729                 gpointer cb_data)
 730 {
 731         FILE *tmpfp;
 732         const gchar *src_codeset;
 733         gboolean conv_fail = FALSE;
 734         gchar buf[BUFFSIZE];
 735         gchar *str;
 736         gboolean scan_ret = FALSE;
 737         int r;
 738
 739         cm_return_val_if_fail(mimeinfo != NULL, TRUE);
 740         cm_return_val_if_fail(scan_callback != NULL, TRUE);
 741
 742         if (!procmime_decode_content(mimeinfo))
 743                 return TRUE;
 744
 745         tmpfp = my_tmpfile();
 746
 747         if (tmpfp == NULL) {
 748                 FILE_OP_ERROR("tmpfile", "open");
 749                 return TRUE;
 750         }
 751
 752         if ((r = procmime_get_part_to_stream(tmpfp, mimeinfo)) < 0) {
 753                 g_warning("procmime_get_part_to_stream error %d\n", r);
 754                 return TRUE;
 755         }
 756
 757         src_codeset = forced_charset
 758                       ? forced_charset :
 759                       procmime_mimeinfo_get_parameter(mimeinfo, "charset");
 760
 761         /* use supersets transparently when possible */
 762         if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_ISO_8859_1))
 763                 src_codeset = CS_WINDOWS_1252;
 764         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_GBK))
 765                 src_codeset = CS_GB18030;
 766         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GBK))
 767                 src_codeset = CS_GB18030;
 768         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GB2312))
 769                 src_codeset = CS_GB18030;
 770         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_VIET_VPS))
 771                 src_codeset = CS_WINDOWS_874;
 772
 773         if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "html")) {
 774                 SC_HTMLParser *parser;
 775                 CodeConverter *conv;
 776
 777                 conv = conv_code_converter_new(src_codeset);
 778                 parser = sc_html_parser_new(tmpfp, conv);
 779                 while ((str = sc_html_parse(parser)) != NULL) {
 780                         if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
 781                                 break;
 782                 }
 783                 sc_html_parser_destroy(parser);
 784                 conv_code_converter_destroy(conv);
 785         } else if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "enriched")) {
 786                 ERTFParser *parser;
 787                 CodeConverter *conv;
 788
 789                 conv = conv_code_converter_new(src_codeset);
 790                 parser = ertf_parser_new(tmpfp, conv);
 791                 while ((str = ertf_parse(parser)) != NULL) {
 792                         if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
 793                                 break;
 794                 }
 795                 ertf_parser_destroy(parser);
 796                 conv_code_converter_destroy(conv);
 797         } else if (mimeinfo->type == MIMETYPE_TEXT && mimeinfo->disposition != DISPOSITIONTYPE_ATTACHMENT) {
 798                 while (claws_fgets(buf, sizeof(buf), tmpfp) != NULL) {
 799                         str = conv_codeset_strdup(buf, src_codeset, CS_UTF_8);
 800                         if (str) {
 801                                 if ((scan_ret = scan_callback(str, cb_data)) == TRUE) {
 802                                         g_free(str);
 803                                         break;
 804                                 }
 805                                 g_free(str);
 806                         } else {
 807                                 conv_fail = TRUE;
 808                                 if ((scan_ret = scan_callback(buf, cb_data)) == TRUE)
 809                                         break;
 810                         }
 811                 }
 812         }
 813
 814         if (conv_fail)
 815                 g_warning("procmime_get_text_content(): Code conversion failed.");
 816
 817         claws_fclose(tmpfp);
 818
 819         return scan_ret;
 820 }
 821
 822 static gboolean scan_fputs_cb(const gchar *str, gpointer fp)
 823 {
 824         if (claws_fputs(str, (FILE *)fp) == EOF)
 825                 return TRUE;
 826
 827         return FALSE;
 828 }
 829
 830 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
 831 {
 832         FILE *outfp;
 833         gboolean err;
 834
 835         if ((outfp = my_tmpfile()) == NULL) {
 836                 perror("my_tmpfile");
 837                 return NULL;
 838         }
 839
 840         err = procmime_scan_text_content(mimeinfo, scan_fputs_cb, outfp);
 841
 842         rewind(outfp);
 843         if (err == TRUE) {
 844                 claws_fclose(outfp);
 845                 return NULL;
 846         }
 847         return outfp;
 848
 849 }
 850
 851 FILE *procmime_get_binary_content(MimeInfo *mimeinfo)
 852 {
 853         FILE *outfp;
 854
 855         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 856
 857         if (!procmime_decode_content(mimeinfo))
 858                 return NULL;
 859
 860         outfp = my_tmpfile();
 861
 862         if (procmime_get_part_to_stream(outfp, mimeinfo) < 0) {
 863                 return NULL;
 864         }
 865
 866         return outfp;
 867 }
 868
 869 /* search the first text part of (multipart) MIME message,
 870    decode, convert it and output to outfp. */
 871 FILE *procmime_get_first_text_content(MsgInfo *msginfo)
 872 {
 873         FILE *outfp = NULL;
 874         MimeInfo *mimeinfo, *partinfo;
 875         gboolean empty_ok = FALSE, short_scan = TRUE;
 876
 877         cm_return_val_if_fail(msginfo != NULL, NULL);
 878
 879         /* first we try to short-scan (for speed), refusing empty parts */
 880 scan_again:
 881         if (short_scan)
 882                 mimeinfo = procmime_scan_message_short(msginfo);
 883         else
 884                 mimeinfo = procmime_scan_message(msginfo);
 885         if (!mimeinfo) return NULL;
 886
 887         partinfo = mimeinfo;
 888         while (partinfo && (partinfo->type != MIMETYPE_TEXT ||
 889                (partinfo->length == 0 && !empty_ok))) {
 890                 partinfo = procmime_mimeinfo_next(partinfo);
 891         }
 892         if (partinfo)
 893                 outfp = procmime_get_text_content(partinfo);
 894         else if (!empty_ok && short_scan) {
 895                 /* if short scan didn't find a non-empty part, rescan
 896                  * fully for non-empty parts
 897                  */
 898                 short_scan = FALSE;
 899                 procmime_mimeinfo_free_all(&mimeinfo);
 900                 goto scan_again;
 901         } else if (!empty_ok && !short_scan) {
 902                 /* if full scan didn't find a non-empty part, rescan
 903                  * accepting empty parts
 904                  */
 905                 empty_ok = TRUE;
 906                 procmime_mimeinfo_free_all(&mimeinfo);
 907                 goto scan_again;
 908         }
 909         procmime_mimeinfo_free_all(&mimeinfo);
 910
 911         return outfp;
 912 }
 913
 914
 915 static gboolean find_encrypted_func(GNode *node, gpointer data)
 916 {
 917         MimeInfo *mimeinfo = (MimeInfo *) node->data;
 918         MimeInfo **encinfo = (MimeInfo **) data;
 919
 920         if (privacy_mimeinfo_is_encrypted(mimeinfo)) {
 921                 *encinfo = mimeinfo;
 922                 return TRUE;
 923         }
 924
 925         return FALSE;
 926 }
 927
 928 static MimeInfo *find_encrypted_part(MimeInfo *rootinfo)
 929 {
 930         MimeInfo *encinfo = NULL;
 931
 932         g_node_traverse(rootinfo->node, G_IN_ORDER, G_TRAVERSE_ALL, -1,
 933                 find_encrypted_func, &encinfo);
 934
 935         return encinfo;
 936 }
 937
 938 /* search the first encrypted text part of (multipart) MIME message,
 939    decode, convert it and output to outfp. */
 940 FILE *procmime_get_first_encrypted_text_content(MsgInfo *msginfo)
 941 {
 942         FILE *outfp = NULL;
 943         MimeInfo *mimeinfo, *partinfo, *encinfo;
 944
 945         cm_return_val_if_fail(msginfo != NULL, NULL);
 946
 947         mimeinfo = procmime_scan_message(msginfo);
 948         if (!mimeinfo) {
 949                 return NULL;
 950         }
 951
 952         partinfo = mimeinfo;
 953         if ((encinfo = find_encrypted_part(partinfo)) != NULL) {
 954                 debug_print("decrypting message part\n");
 955                 if (privacy_mimeinfo_decrypt(encinfo) < 0) {
 956                         alertpanel_error(_("Couldn't decrypt: %s"),
 957                                 privacy_get_error());
 958                         return NULL;
 959                 }
 960         }
 961         partinfo = mimeinfo;
 962         while (partinfo && partinfo->type != MIMETYPE_TEXT) {
 963                 partinfo = procmime_mimeinfo_next(partinfo);
 964                 if (privacy_mimeinfo_is_signed(partinfo))
 965                         procmsg_msginfo_set_flags(msginfo, 0, MSG_SIGNED);
 966         }
 967
 968         if (partinfo)
 969                 outfp = procmime_get_text_content(partinfo);
 970
 971         procmime_mimeinfo_free_all(&mimeinfo);
 972
 973         return outfp;
 974 }
 975
 976 gboolean procmime_msginfo_is_encrypted(MsgInfo *msginfo)
 977 {
 978         MimeInfo *mimeinfo, *partinfo;
 979         gboolean result = FALSE;
 980
 981         cm_return_val_if_fail(msginfo != NULL, FALSE);
 982
 983         mimeinfo = procmime_scan_message(msginfo);
 984         if (!mimeinfo) {
 985                 return FALSE;
 986         }
 987
 988         partinfo = mimeinfo;
 989         result = (find_encrypted_part(partinfo) != NULL);
 990         procmime_mimeinfo_free_all(&mimeinfo);
 991
 992         return result;
 993 }
 994
 995 gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
 996 {
 997         static guint32 id = 0;
 998         gchar *base;
 999         gchar *filename;
1000         gchar f_prefix[10];
1001
1002         cm_return_val_if_fail(mimeinfo != NULL, NULL);
1003
1004         g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++);
1005
1006         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
1007                 base = g_strdup("mimetmp.html");
1008         else {
1009                 const gchar *basetmp;
1010
1011                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
1012                 if (basetmp == NULL)
1013                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
1014                 if (basetmp == NULL)
1015                         basetmp = "mimetmp";
1016                 basetmp = g_path_get_basename(basetmp);
1017                 if (*basetmp == '\0')
1018                         basetmp = g_strdup("mimetmp");
1019                 base = conv_filename_from_utf8(basetmp);
1020                 g_free((gchar*)basetmp);
1021                 subst_for_shellsafe_filename(base);
1022         }
1023
1024         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
1025                                f_prefix, base, NULL);
1026
1027         g_free(base);
1028
1029         return filename;
1030 }
1031
1032 static GList *mime_type_list = NULL;
1033
1034 gchar *procmime_get_mime_type(const gchar *filename)
1035 {
1036         const gchar *p;
1037         gchar *ext = NULL;
1038         gchar *base;
1039 #ifndef G_OS_WIN32
1040         static GHashTable *mime_type_table = NULL;
1041         MimeType *mime_type;
1042
1043         if (!mime_type_table) {
1044                 mime_type_table = procmime_get_mime_type_table();
1045                 if (!mime_type_table) return NULL;
1046         }
1047 #endif
1048
1049         if (filename == NULL)
1050                 return NULL;
1051
1052         base = g_path_get_basename(filename);
1053         if ((p = strrchr(base, '.')) != NULL)
1054                 ext = g_utf8_strdown(p + 1, -1);
1055         else
1056                 ext = g_utf8_strdown(base, -1);
1057         g_free(base);
1058
1059 #ifndef G_OS_WIN32
1060         mime_type = g_hash_table_lookup(mime_type_table, ext);
1061
1062         if (mime_type) {
1063                 gchar *str;
1064                 str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
1065                                   NULL);
1066                 debug_print("got type %s for %s\n", str, ext);
1067                 g_free(ext);
1068                 return str;
1069         }
1070         g_free(ext);
1071         return NULL;
1072 #else
1073         gchar *str = get_content_type_from_registry_with_ext(ext);
1074
1075         g_free(ext);
1076         return str;
1077 #endif
1078 }
1079
1080 static guint procmime_str_hash(gconstpointer gptr)
1081 {
1082         guint hash_result = 0;
1083         const char *str;
1084
1085         for (str = gptr; str && *str; str++) {
1086                 if (isupper(*str)) hash_result += (*str + ' ');
1087                 else hash_result += *str;
1088         }
1089
1090         return hash_result;
1091 }
1092
1093 static gint procmime_str_equal(gconstpointer gptr1, gconstpointer gptr2)
1094 {
1095         const char *str1 = gptr1;
1096         const char *str2 = gptr2;
1097
1098         return !g_utf8_collate(str1, str2);
1099 }
1100
1101 static GHashTable *procmime_get_mime_type_table(void)
1102 {
1103         GHashTable *table = NULL;
1104         GList *cur;
1105         MimeType *mime_type;
1106         gchar **exts;
1107
1108         if (!mime_type_list) {
1109                 mime_type_list = procmime_get_mime_type_list();
1110                 if (!mime_type_list) return NULL;
1111         }
1112
1113         table = g_hash_table_new(procmime_str_hash, procmime_str_equal);
1114
1115         for (cur = mime_type_list; cur != NULL; cur = cur->next) {
1116                 gint i;
1117                 gchar *key;
1118
1119                 mime_type = (MimeType *)cur->data;
1120
1121                 if (!mime_type->extension) continue;
1122
1123                 exts = g_strsplit(mime_type->extension, " ", 16);
1124                 for (i = 0; exts[i] != NULL; i++) {
1125                         /* Don't overwrite previously inserted extension */
1126                         if (!g_hash_table_lookup(table, exts[i])) {
1127                                 key = g_strdup(exts[i]);
1128                                 g_hash_table_insert(table, key, mime_type);
1129                         }
1130                 }
1131                 g_strfreev(exts);
1132         }
1133
1134         return table;
1135 }
1136
1137 GList *procmime_get_mime_type_list(void)
1138 {
1139         GList *list = NULL;
1140         FILE *fp;
1141         gchar buf[BUFFSIZE];
1142         gchar *p;
1143         gchar *delim;
1144         MimeType *mime_type;
1145         gboolean fp_is_glob_file = TRUE;
1146
1147         if (mime_type_list)
1148                 return mime_type_list;
1149
1150 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__)
1151         if ((fp = claws_fopen(DATAROOTDIR "/mime/globs", "rb")) == NULL)
1152 #else
1153         if ((fp = claws_fopen("/usr/share/mime/globs", "rb")) == NULL)
1154 #endif
1155         {
1156                 fp_is_glob_file = FALSE;
1157                 if ((fp = claws_fopen("/etc/mime.types", "rb")) == NULL) {
1158                         if ((fp = claws_fopen(SYSCONFDIR "/mime.types", "rb"))
1159                                 == NULL) {
1160                                 FILE_OP_ERROR(SYSCONFDIR "/mime.types",
1161                                         "claws_fopen");
1162                                 return NULL;
1163                         }
1164                 }
1165         }
1166
1167         while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
1168                 p = strchr(buf, '#');
1169                 if (p) *p = '\0';
1170                 g_strstrip(buf);
1171
1172                 p = buf;
1173
1174                 if (fp_is_glob_file) {
1175                         while (*p && !g_ascii_isspace(*p) && (*p!=':')) p++;
1176                 } else {
1177                         while (*p && !g_ascii_isspace(*p)) p++;
1178                 }
1179
1180                 if (*p) {
1181                         *p = '\0';
1182                         p++;
1183                 }
1184                 delim = strchr(buf, '/');
1185                 if (delim == NULL) continue;
1186                 *delim = '\0';
1187
1188                 mime_type = g_new(MimeType, 1);
1189                 mime_type->type = g_strdup(buf);
1190                 mime_type->sub_type = g_strdup(delim + 1);
1191
1192                 if (fp_is_glob_file) {
1193                         while (*p && (g_ascii_isspace(*p)||(*p=='*')||(*p=='.'))) p++;
1194                 } else {
1195                         while (*p && g_ascii_isspace(*p)) p++;
1196                 }
1197
1198                 if (*p)
1199                         mime_type->extension = g_utf8_strdown(p, -1);
1200                 else
1201                         mime_type->extension = NULL;
1202
1203                 list = g_list_append(list, mime_type);
1204         }
1205
1206         claws_fclose(fp);
1207
1208         if (!list)
1209                 g_warning("Can't read mime.types");
1210
1211         return list;
1212 }
1213
1214 EncodingType procmime_get_encoding_for_charset(const gchar *charset)
1215 {
1216         if (!charset)
1217                 return ENC_8BIT;
1218         else if (!g_ascii_strncasecmp(charset, "ISO-2022-", 9) ||
1219                  !g_ascii_strcasecmp(charset, "US-ASCII"))
1220                 return ENC_7BIT;
1221         else if (!g_ascii_strcasecmp(charset, "ISO-8859-5") ||
1222                  !g_ascii_strncasecmp(charset, "KOI8-", 5) ||
1223                  !g_ascii_strcasecmp(charset, "X-MAC-CYRILLIC") ||
1224                  !g_ascii_strcasecmp(charset, "MAC-CYRILLIC") ||
1225                  !g_ascii_strcasecmp(charset, "Windows-1251"))
1226                 return ENC_8BIT;
1227         else if (!g_ascii_strncasecmp(charset, "ISO-8859-", 9))
1228                 return ENC_QUOTED_PRINTABLE;
1229         else if (!g_ascii_strncasecmp(charset, "UTF-8", 5))
1230                 return ENC_QUOTED_PRINTABLE;
1231         else
1232                 return ENC_8BIT;
1233 }
1234
1235 EncodingType procmime_get_encoding_for_text_file(const gchar *file, gboolean *has_binary)
1236 {
1237         FILE *fp;
1238         guchar buf[BUFFSIZE];
1239         size_t len;
1240         size_t octet_chars = 0;
1241         size_t total_len = 0;
1242         gfloat octet_percentage;
1243         gboolean force_b64 = FALSE;
1244
1245         if ((fp = claws_fopen(file, "rb")) == NULL) {
1246                 FILE_OP_ERROR(file, "claws_fopen");
1247                 return ENC_UNKNOWN;
1248         }
1249
1250         while ((len = claws_fread(buf, sizeof(guchar), sizeof(buf), fp)) > 0) {
1251                 guchar *p;
1252                 gint i;
1253
1254                 for (p = buf, i = 0; i < len; ++p, ++i) {
1255                         if (*p & 0x80)
1256                                 ++octet_chars;
1257                         if (*p == '\0') {
1258                                 force_b64 = TRUE;
1259                                 *has_binary = TRUE;
1260                         }
1261                 }
1262                 total_len += len;
1263         }
1264
1265         claws_fclose(fp);
1266
1267         if (total_len > 0)
1268                 octet_percentage = (gfloat)octet_chars / (gfloat)total_len;
1269         else
1270                 octet_percentage = 0.0;
1271
1272         debug_print("procmime_get_encoding_for_text_file(): "
1273                     "8bit chars: %"G_GSIZE_FORMAT" / %"G_GSIZE_FORMAT" (%f%%)\n", octet_chars, total_len,
1274                     100.0 * octet_percentage);
1275
1276         if (octet_percentage > 0.20 || force_b64) {
1277                 debug_print("using BASE64\n");
1278                 return ENC_BASE64;
1279         } else if (octet_chars > 0) {
1280                 debug_print("using quoted-printable\n");
1281                 return ENC_QUOTED_PRINTABLE;
1282         } else {
1283                 debug_print("using 7bit\n");
1284                 return ENC_7BIT;
1285         }
1286 }
1287
1288 struct EncodingTable
1289 {
1290         gchar *str;
1291         EncodingType enc_type;
1292 };
1293
1294 struct EncodingTable encoding_table[] = {
1295         {"7bit", ENC_7BIT},
1296         {"8bit", ENC_8BIT},
1297         {"binary", ENC_BINARY},
1298         {"quoted-printable", ENC_QUOTED_PRINTABLE},
1299         {"base64", ENC_BASE64},
1300         {"x-uuencode", ENC_UNKNOWN},
1301         {NULL, ENC_UNKNOWN},
1302 };
1303
1304 const gchar *procmime_get_encoding_str(EncodingType encoding)
1305 {
1306         struct EncodingTable *enc_table;
1307
1308         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1309                 if (enc_table->enc_type == encoding)
1310                         return enc_table->str;
1311         }
1312         return NULL;
1313 }
1314
1315 /* --- NEW MIME STUFF --- */
1316 struct TypeTable
1317 {
1318         gchar *str;
1319         MimeMediaType type;
1320 };
1321
1322 static struct TypeTable mime_type_table[] = {
1323         {"text", MIMETYPE_TEXT},
1324         {"image", MIMETYPE_IMAGE},
1325         {"audio", MIMETYPE_AUDIO},
1326         {"video", MIMETYPE_VIDEO},
1327         {"model", MIMETYPE_MODEL},
1328         {"application", MIMETYPE_APPLICATION},
1329         {"message", MIMETYPE_MESSAGE},
1330         {"multipart", MIMETYPE_MULTIPART},
1331         {NULL, 0},
1332 };
1333
1334 const gchar *procmime_get_media_type_str(MimeMediaType type)
1335 {
1336         struct TypeTable *type_table;
1337
1338         for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
1339                 if (type_table->type == type)
1340                         return type_table->str;
1341         }
1342         return NULL;
1343 }
1344
1345 MimeMediaType procmime_get_media_type(const gchar *str)
1346 {
1347         struct TypeTable *typetablearray;
1348
1349         for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++)
1350                 if (g_ascii_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0)
1351                         return typetablearray->type;
1352
1353         return MIMETYPE_UNKNOWN;
1354 }
1355
1356 /*!
1357  *\brief        Safe wrapper for content type string.
1358  *
1359  *\return       const gchar * Pointer to content type string.
1360  */
1361 gchar *procmime_get_content_type_str(MimeMediaType type,
1362                                            const char *subtype)
1363 {
1364         const gchar *type_str = NULL;
1365
1366         if (subtype == NULL || !(type_str = procmime_get_media_type_str(type)))
1367                 return g_strdup("unknown");
1368         return g_strdup_printf("%s/%s", type_str, subtype);
1369 }
1370
1371 static int procmime_parse_mimepart(MimeInfo *parent,
1372                              gchar *content_type,
1373                              gchar *content_encoding,
1374                              gchar *content_description,
1375                              gchar *content_id,
1376                              gchar *content_disposition,
1377                              gchar *content_location,
1378                              const gchar *original_msgid,
1379                              const gchar *disposition_notification_hdr,
1380                              const gchar *filename,
1381                              guint offset,
1382                              guint length,
1383                              gboolean short_scan);
1384
1385 static void procmime_parse_message_rfc822(MimeInfo *mimeinfo, gboolean short_scan)
1386 {
1387         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1388                                 {"Content-Transfer-Encoding:",
1389                                                    NULL, FALSE},
1390                                 {"Content-Description:",
1391                                                    NULL, TRUE},
1392                                 {"Content-ID:",
1393                                                    NULL, TRUE},
1394                                 {"Content-Disposition:",
1395                                                    NULL, TRUE},
1396                                 {"Content-Location:",
1397                                                    NULL, TRUE},
1398                                 {"MIME-Version:",
1399                                                    NULL, TRUE},
1400                                 {"Original-Message-ID:",
1401                                                    NULL, TRUE},
1402                                 {"Disposition:",
1403                                                    NULL, TRUE},
1404                                 {NULL,             NULL, FALSE}};
1405         guint content_start, i;
1406         FILE *fp;
1407         gchar *tmp;
1408         gint len = 0;
1409
1410         procmime_decode_content(mimeinfo);
1411
1412         fp = claws_fopen(mimeinfo->data.filename, "rb");
1413         if (fp == NULL) {
1414                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
1415                 return;
1416         }
1417         if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1418                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1419                 claws_fclose(fp);
1420                 return;
1421         }
1422         procheader_get_header_fields(fp, hentry);
1423         if (hentry[0].body != NULL) {
1424                 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);
1425                 g_free(hentry[0].body);
1426                 hentry[0].body = tmp;
1427         }
1428         if (hentry[2].body != NULL) {
1429                 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);
1430                 g_free(hentry[2].body);
1431                 hentry[2].body = tmp;
1432         }
1433         if (hentry[4].body != NULL) {
1434                 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);
1435                 g_free(hentry[4].body);
1436                 hentry[4].body = tmp;
1437         }
1438         if (hentry[5].body != NULL) {
1439                 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);
1440                 g_free(hentry[5].body);
1441                 hentry[5].body = tmp;
1442         }
1443         if (hentry[7].body != NULL) {
1444                 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);
1445                 g_free(hentry[7].body);
1446                 hentry[7].body = tmp;
1447         }
1448         if (hentry[8].body != NULL) {
1449                 tmp = conv_unmime_header(hentry[8].body, NULL, FALSE);
1450                 g_free(hentry[8].body);
1451                 hentry[8].body = tmp;
1452         }
1453
1454         content_start = ftell(fp);
1455         claws_fclose(fp);
1456
1457         len = mimeinfo->length - (content_start - mimeinfo->offset);
1458         if (len < 0)
1459                 len = 0;
1460         procmime_parse_mimepart(mimeinfo,
1461                                 hentry[0].body, hentry[1].body,
1462                                 hentry[2].body, hentry[3].body,
1463                                 hentry[4].body, hentry[5].body,
1464                                 hentry[7].body, hentry[8].body,
1465                                 mimeinfo->data.filename, content_start,
1466                                 len, short_scan);
1467
1468         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1469                 g_free(hentry[i].body);
1470                 hentry[i].body = NULL;
1471         }
1472 }
1473
1474 static void procmime_parse_disposition_notification(MimeInfo *mimeinfo,
1475                 const gchar *original_msgid, const gchar *disposition_notification_hdr,
1476                 gboolean short_scan)
1477 {
1478         HeaderEntry hentry[] = {{"Original-Message-ID:",  NULL, TRUE},
1479                                 {"Disposition:",          NULL, TRUE},
1480                                 {NULL,                    NULL, FALSE}};
1481         guint i;
1482         FILE *fp;
1483         gchar *orig_msg_id = NULL;
1484         gchar *disp = NULL;
1485
1486         procmime_decode_content(mimeinfo);
1487
1488         debug_print("parse disposition notification\n");
1489         fp = claws_fopen(mimeinfo->data.filename, "rb");
1490         if (fp == NULL) {
1491                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
1492                 return;
1493         }
1494         if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1495                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1496                 claws_fclose(fp);
1497                 return;
1498         }
1499
1500         if (original_msgid && disposition_notification_hdr) {
1501                 hentry[0].body = g_strdup(original_msgid);
1502                 hentry[1].body = g_strdup(disposition_notification_hdr);
1503         } else {
1504                 procheader_get_header_fields(fp, hentry);
1505         }
1506
1507         claws_fclose(fp);
1508
1509         if (!hentry[0].body || !hentry[1].body) {
1510                 debug_print("MsgId %s, Disp %s\n",
1511                         hentry[0].body ? hentry[0].body:"(nil)",
1512                         hentry[1].body ? hentry[1].body:"(nil)");
1513                 goto bail;
1514         }
1515
1516         orig_msg_id = g_strdup(hentry[0].body);
1517         disp = g_strdup(hentry[1].body);
1518
1519         extract_parenthesis(orig_msg_id, '<', '>');
1520         remove_space(orig_msg_id);
1521
1522         if (strstr(disp, "displayed")) {
1523                 /* find sent message, if possible */
1524                 MsgInfo *info = NULL;
1525                 GList *flist;
1526                 debug_print("%s has been displayed.\n", orig_msg_id);
1527                 for (flist = folder_get_list(); flist != NULL; flist = g_list_next(flist)) {
1528                         FolderItem *outbox = ((Folder *)(flist->data))->outbox;
1529                         if (!outbox) {
1530                                 debug_print("skipping folder with no outbox...\n");
1531                                 continue;
1532                         }
1533                         info = folder_item_get_msginfo_by_msgid(outbox, orig_msg_id);
1534                         debug_print("%s %s in %s\n", info?"found":"didn't find", orig_msg_id, outbox->path);
1535                         if (info) {
1536                                 procmsg_msginfo_set_flags(info, MSG_RETRCPT_GOT, 0);
1537                                 procmsg_msginfo_free(&info);
1538                         }
1539                 }
1540         }
1541         g_free(orig_msg_id);
1542         g_free(disp);
1543 bail:
1544         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1545                 g_free(hentry[i].body);
1546                 hentry[i].body = NULL;
1547         }
1548 }
1549
1550 #define GET_HEADERS() {                                         \
1551         procheader_get_header_fields(fp, hentry);               \
1552         if (hentry[0].body != NULL) {                           \
1553                 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);  \
1554                 g_free(hentry[0].body);                         \
1555                 hentry[0].body = tmp;                           \
1556         }                                                       \
1557         if (hentry[2].body != NULL) {                           \
1558                 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);  \
1559                 g_free(hentry[2].body);                         \
1560                 hentry[2].body = tmp;                           \
1561         }                                                       \
1562         if (hentry[4].body != NULL) {                           \
1563                 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);  \
1564                 g_free(hentry[4].body);                         \
1565                 hentry[4].body = tmp;                           \
1566         }                                                       \
1567         if (hentry[5].body != NULL) {                           \
1568                 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);  \
1569                 g_free(hentry[5].body);                         \
1570                 hentry[5].body = tmp;                           \
1571         }                                                       \
1572         if (hentry[6].body != NULL) {                           \
1573                 tmp = conv_unmime_header(hentry[6].body, NULL, FALSE);  \
1574                 g_free(hentry[6].body);                         \
1575                 hentry[6].body = tmp;                           \
1576         }                                                       \
1577         if (hentry[7].body != NULL) {                           \
1578                 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);  \
1579                 g_free(hentry[7].body);                         \
1580                 hentry[7].body = tmp;                           \
1581         }                                                       \
1582 }
1583
1584 static void procmime_parse_multipart(MimeInfo *mimeinfo, gboolean short_scan)
1585 {
1586         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1587                                 {"Content-Transfer-Encoding:",
1588                                                    NULL, FALSE},
1589                                 {"Content-Description:",
1590                                                    NULL, TRUE},
1591                                 {"Content-ID:",
1592                                                    NULL, TRUE},
1593                                 {"Content-Disposition:",
1594                                                    NULL, TRUE},
1595                                 {"Content-Location:",
1596                                                    NULL, TRUE},
1597                                 {"Original-Message-ID:",
1598                                                    NULL, TRUE},
1599                                 {"Disposition:",
1600                                                    NULL, TRUE},
1601                                 {NULL,             NULL, FALSE}};
1602         gchar *tmp;
1603         gchar *boundary;
1604         gint boundary_len = 0, lastoffset = -1, i;
1605         gchar buf[BUFFSIZE];
1606         FILE *fp;
1607         int result = 0;
1608         gboolean start_found = FALSE;
1609         gboolean end_found = FALSE;
1610
1611         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1612         if (!boundary)
1613                 return;
1614         boundary_len = strlen(boundary);
1615
1616         procmime_decode_content(mimeinfo);
1617
1618         fp = claws_fopen(mimeinfo->data.filename, "rb");
1619         if (fp == NULL) {
1620                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
1621                 return;
1622         }
1623
1624         if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1625                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1626                 claws_fclose(fp);
1627                 return;
1628         }
1629
1630         while (claws_fgets(buf, sizeof(buf), fp) != NULL && result == 0) {
1631                 if (ftell(fp) - 1 > (mimeinfo->offset + mimeinfo->length))
1632                         break;
1633
1634                 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1635                         start_found = TRUE;
1636
1637                         if (lastoffset != -1) {
1638                                 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1639                                 if (len < 0)
1640                                         len = 0;
1641                                 result = procmime_parse_mimepart(mimeinfo,
1642                                                         hentry[0].body, hentry[1].body,
1643                                                         hentry[2].body, hentry[3].body,
1644                                                         hentry[4].body, hentry[5].body,
1645                                                         hentry[6].body, hentry[7].body,
1646                                                         mimeinfo->data.filename, lastoffset,
1647                                                         len, short_scan);
1648                                 if (result == 1 && short_scan)
1649                                         break;
1650
1651                         }
1652
1653                         if (buf[2 + boundary_len]     == '-' &&
1654                             buf[2 + boundary_len + 1] == '-') {
1655                                 end_found = TRUE;
1656                                 break;
1657                         }
1658                         for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1659                                 g_free(hentry[i].body);
1660                                 hentry[i].body = NULL;
1661                         }
1662                         GET_HEADERS();
1663                         lastoffset = ftell(fp);
1664                 }
1665         }
1666
1667         if (start_found && !end_found && lastoffset != -1) {
1668                 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1669
1670                 if (len >= 0) {
1671                         result = procmime_parse_mimepart(mimeinfo,
1672                                         hentry[0].body, hentry[1].body,
1673                                         hentry[2].body, hentry[3].body,
1674                                         hentry[4].body, hentry[5].body,
1675                                         hentry[6].body, hentry[7].body,
1676                                         mimeinfo->data.filename, lastoffset,
1677                                         len, short_scan);
1678                 }
1679                 mimeinfo->broken = TRUE;
1680         }
1681
1682         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1683                 g_free(hentry[i].body);
1684                 hentry[i].body = NULL;
1685         }
1686         claws_fclose(fp);
1687 }
1688
1689 static void parse_parameters(const gchar *parameters, GHashTable *table)
1690 {
1691         gchar *params, *param, *next;
1692         GSList *convlist = NULL, *concatlist = NULL, *cur;
1693
1694         params = g_strdup(parameters);
1695         param = params;
1696         next = params;
1697         for (; next != NULL; param = next) {
1698                 gchar *attribute, *value, *tmp, *down_attr, *orig_down_attr;
1699                 gint len;
1700                 gboolean convert = FALSE;
1701
1702                 next = strchr_with_skip_quote(param, '"', ';');
1703                 if (next != NULL) {
1704                         next[0] = '\0';
1705                         next++;
1706                 }
1707
1708                 g_strstrip(param);
1709
1710                 attribute = param;
1711                 value = strchr(attribute, '=');
1712                 if (value == NULL)
1713                         continue;
1714
1715                 value[0] = '\0';
1716                 value++;
1717                 while (value[0] != '\0' && value[0] == ' ')
1718                         value++;
1719
1720                 down_attr = g_utf8_strdown(attribute, -1);
1721                 orig_down_attr = down_attr;
1722
1723                 len = down_attr ? strlen(down_attr):0;
1724                 if (len > 0 && down_attr[len - 1] == '*') {
1725                         gchar *srcpos, *dstpos, *endpos;
1726
1727                         convert = TRUE;
1728                         down_attr[len - 1] = '\0';
1729
1730                         srcpos = value;
1731                         dstpos = value;
1732                         endpos = value + strlen(value);
1733                         while (srcpos < endpos) {
1734                                 if (*srcpos != '%')
1735                                         *dstpos = *srcpos;
1736                                 else {
1737                                         guchar dstvalue;
1738
1739                                         if (!get_hex_value(&dstvalue, srcpos[1], srcpos[2]))
1740                                                 *dstpos = '?';
1741                                         else
1742                                                 *dstpos = dstvalue;
1743                                         srcpos += 2;
1744                                 }
1745                                 srcpos++;
1746                                 dstpos++;
1747                         }
1748                         *dstpos = '\0';
1749                         if (value[0] == '"')
1750                                 extract_quote(value, '"');
1751                 } else {
1752                         if (value[0] == '"')
1753                                 extract_quote(value, '"');
1754                         else if ((tmp = strchr(value, ' ')) != NULL)
1755                                 *tmp = '\0';
1756                 }
1757
1758                 if (down_attr) {
1759                         while (down_attr[0] == ' ')
1760                                 down_attr++;
1761                         while (down_attr[strlen(down_attr)-1] == ' ')
1762                                 down_attr[strlen(down_attr)-1] = '\0';
1763                 }
1764
1765                 while (value[0] != '\0' && value[0] == ' ')
1766                         value++;
1767                 while (value[strlen(value)-1] == ' ')
1768                         value[strlen(value)-1] = '\0';
1769
1770                 if (down_attr && strrchr(down_attr, '*') != NULL) {
1771                         gchar *tmpattr;
1772
1773                         tmpattr = g_strdup(down_attr);
1774                         tmp = strrchr(tmpattr, '*');
1775                         tmp[0] = '\0';
1776
1777                         if ((tmp[1] == '0') && (tmp[2] == '\0') &&
1778                             (g_slist_find_custom(concatlist, down_attr, (GCompareFunc)g_strcmp0) == NULL))
1779                                 concatlist = g_slist_prepend(concatlist, g_strdup(tmpattr));
1780
1781                         if (convert && (g_slist_find_custom(convlist, tmpattr, (GCompareFunc)g_strcmp0) == NULL))
1782                                 convlist = g_slist_prepend(convlist, g_strdup(tmpattr));
1783
1784                         g_free(tmpattr);
1785                 } else if (convert) {
1786                         if (g_slist_find_custom(convlist, down_attr, (GCompareFunc)g_strcmp0) == NULL)
1787                                 convlist = g_slist_prepend(convlist, g_strdup(down_attr));
1788                 }
1789
1790                 if (g_hash_table_lookup(table, down_attr) == NULL)
1791                         g_hash_table_insert(table, g_strdup(down_attr), g_strdup(value));
1792                 g_free(orig_down_attr);
1793         }
1794
1795         for (cur = concatlist; cur != NULL; cur = g_slist_next(cur)) {
1796                 gchar *attribute, *attrwnum, *partvalue;
1797                 gint n = 0;
1798                 GString *value;
1799
1800                 attribute = (gchar *) cur->data;
1801                 value = g_string_sized_new(64);
1802
1803                 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1804                 while ((partvalue = g_hash_table_lookup(table, attrwnum)) != NULL) {
1805                         g_string_append(value, partvalue);
1806
1807                         g_hash_table_remove(table, attrwnum);
1808                         g_free(attrwnum);
1809                         n++;
1810                         attrwnum = g_strdup_printf("%s*%d", attribute, n);
1811                 }
1812                 g_free(attrwnum);
1813
1814                 g_hash_table_insert(table, g_strdup(attribute), g_strdup(value->str));
1815                 g_string_free(value, TRUE);
1816         }
1817         slist_free_strings_full(concatlist);
1818
1819         for (cur = convlist; cur != NULL; cur = g_slist_next(cur)) {
1820                 gchar *attribute, *key, *value;
1821                 gchar *charset, *lang, *oldvalue, *newvalue;
1822
1823                 attribute = (gchar *) cur->data;
1824                 if (!g_hash_table_lookup_extended(
1825                         table, attribute, (gpointer *)(gchar *) &key, (gpointer *)(gchar *) &value))
1826                         continue;
1827
1828                 charset = value;
1829                 if (charset == NULL)
1830                         continue;
1831                 lang = strchr(charset, '\'');
1832                 if (lang == NULL)
1833                         continue;
1834                 lang[0] = '\0';
1835                 lang++;
1836                 oldvalue = strchr(lang, '\'');
1837                 if (oldvalue == NULL)
1838                         continue;
1839                 oldvalue[0] = '\0';
1840                 oldvalue++;
1841
1842                 newvalue = conv_codeset_strdup(oldvalue, charset, CS_UTF_8);
1843
1844                 g_hash_table_remove(table, attribute);
1845                 g_free(key);
1846                 g_free(value);
1847
1848                 g_hash_table_insert(table, g_strdup(attribute), newvalue);
1849         }
1850         slist_free_strings_full(convlist);
1851
1852         g_free(params);
1853 }
1854
1855 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1856 {
1857         cm_return_if_fail(content_type != NULL);
1858         cm_return_if_fail(mimeinfo != NULL);
1859
1860         /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1861          * if it's not available we use the default Content-Type */
1862         if ((content_type[0] == '\0') || (strchr(content_type, '/') == NULL)) {
1863                 mimeinfo->type = MIMETYPE_TEXT;
1864                 mimeinfo->subtype = g_strdup("plain");
1865                 if (g_hash_table_lookup(mimeinfo->typeparameters,
1866                                        "charset") == NULL) {
1867                         g_hash_table_insert(mimeinfo->typeparameters,
1868                                     g_strdup("charset"),
1869                                     g_strdup(
1870                                         conv_get_locale_charset_str_no_utf8()));
1871                 }
1872         } else {
1873                 gchar *type, *subtype, *params;
1874
1875                 type = g_strdup(content_type);
1876                 subtype = strchr(type, '/') + 1;
1877                 *(subtype - 1) = '\0';
1878                 if ((params = strchr(subtype, ';')) != NULL) {
1879                         params[0] = '\0';
1880                         params++;
1881                 }
1882
1883                 mimeinfo->type = procmime_get_media_type(type);
1884                 mimeinfo->subtype = g_strstrip(g_strdup(subtype));
1885
1886                 /* Get mimeinfo->typeparameters */
1887                 if (params != NULL)
1888                         parse_parameters(params, mimeinfo->typeparameters);
1889
1890                 g_free(type);
1891         }
1892 }
1893
1894 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1895 {
1896         gchar *tmp, *params;
1897
1898         cm_return_if_fail(content_disposition != NULL);
1899         cm_return_if_fail(mimeinfo != NULL);
1900
1901         tmp = g_strdup(content_disposition);
1902         if ((params = strchr(tmp, ';')) != NULL) {
1903                 params[0] = '\0';
1904                 params++;
1905         }
1906         g_strstrip(tmp);
1907
1908         if (!g_ascii_strcasecmp(tmp, "inline"))
1909                 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1910         else if (!g_ascii_strcasecmp(tmp, "attachment"))
1911                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1912         else
1913                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1914
1915         if (params != NULL)
1916                 parse_parameters(params, mimeinfo->dispositionparameters);
1917
1918         g_free(tmp);
1919 }
1920
1921
1922 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1923 {
1924         struct EncodingTable *enc_table;
1925
1926         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1927                 if (g_ascii_strcasecmp(enc_table->str, content_encoding) == 0) {
1928                         mimeinfo->encoding_type = enc_table->enc_type;
1929                         return;
1930                 }
1931         }
1932         mimeinfo->encoding_type = ENC_UNKNOWN;
1933         return;
1934 }
1935
1936 static GSList *registered_parsers = NULL;
1937
1938 static MimeParser *procmime_get_mimeparser_for_type(MimeMediaType type, const gchar *sub_type)
1939 {
1940         GSList *cur;
1941         for (cur = registered_parsers; cur; cur = cur->next) {
1942                 MimeParser *parser = (MimeParser *)cur->data;
1943                 if (parser->type == type && !g_strcmp0(parser->sub_type, sub_type))
1944                         return parser;
1945         }
1946         return NULL;
1947 }
1948
1949 void procmime_mimeparser_register(MimeParser *parser)
1950 {
1951         if (!procmime_get_mimeparser_for_type(parser->type, parser->sub_type))
1952                 registered_parsers = g_slist_append(registered_parsers, parser);
1953 }
1954
1955
1956 void procmime_mimeparser_unregister(MimeParser *parser)
1957 {
1958         registered_parsers = g_slist_remove(registered_parsers, parser);
1959 }
1960
1961 static gboolean procmime_mimeparser_parse(MimeParser *parser, MimeInfo *mimeinfo)
1962 {
1963         cm_return_val_if_fail(parser->parse != NULL, FALSE);
1964         return parser->parse(parser, mimeinfo);
1965 }
1966
1967 static int procmime_parse_mimepart(MimeInfo *parent,
1968                              gchar *content_type,
1969                              gchar *content_encoding,
1970                              gchar *content_description,
1971                              gchar *content_id,
1972                              gchar *content_disposition,
1973                              gchar *content_location,
1974                              const gchar *original_msgid,
1975                              const gchar *disposition_notification_hdr,
1976                              const gchar *filename,
1977                              guint offset,
1978                              guint length,
1979                              gboolean short_scan)
1980 {
1981         MimeInfo *mimeinfo;
1982         MimeParser *parser = NULL;
1983         gboolean parsed = FALSE;
1984         int result = 0;
1985
1986         /* Create MimeInfo */
1987         mimeinfo = procmime_mimeinfo_new();
1988         mimeinfo->content = MIMECONTENT_FILE;
1989
1990         if (parent != NULL) {
1991                 if (g_node_depth(parent->node) > 32) {
1992                         /* 32 is an arbitrary value
1993                          * this avoids DOSsing ourselves
1994                          * with enormous messages
1995                          */
1996                         procmime_mimeinfo_free_all(&mimeinfo);
1997                         return -1;
1998                 }
1999                 g_node_append(parent->node, mimeinfo->node);
2000         }
2001         mimeinfo->data.filename = g_strdup(filename);
2002         mimeinfo->offset = offset;
2003         mimeinfo->length = length;
2004
2005         if (content_type != NULL) {
2006                 g_strchomp(content_type);
2007                 procmime_parse_content_type(content_type, mimeinfo);
2008         } else {
2009                 mimeinfo->type = MIMETYPE_TEXT;
2010                 mimeinfo->subtype = g_strdup("plain");
2011                 if (g_hash_table_lookup(mimeinfo->typeparameters,
2012                                        "charset") == NULL) {
2013                         g_hash_table_insert(mimeinfo->typeparameters,
2014                                     g_strdup("charset"),
2015                                     g_strdup(
2016                                         conv_get_locale_charset_str_no_utf8()));
2017                 }
2018         }
2019
2020         if (content_encoding != NULL) {
2021                 g_strchomp(content_encoding);
2022                 procmime_parse_content_encoding(content_encoding, mimeinfo);
2023         } else {
2024                 mimeinfo->encoding_type = ENC_UNKNOWN;
2025         }
2026
2027         if (content_description != NULL)
2028                 mimeinfo->description = g_strdup(content_description);
2029         else
2030                 mimeinfo->description = NULL;
2031
2032         if (content_id != NULL)
2033                 mimeinfo->id = g_strdup(content_id);
2034         else
2035                 mimeinfo->id = NULL;
2036
2037         if (content_location != NULL)
2038                 mimeinfo->location = g_strdup(content_location);
2039         else
2040                 mimeinfo->location = NULL;
2041
2042         if (content_disposition != NULL) {
2043                 g_strchomp(content_disposition);
2044                 procmime_parse_content_disposition(content_disposition, mimeinfo);
2045         } else
2046                 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
2047
2048         /* Call parser for mime type */
2049         if ((parser = procmime_get_mimeparser_for_type(mimeinfo->type, mimeinfo->subtype)) != NULL) {
2050                 parsed = procmime_mimeparser_parse(parser, mimeinfo);
2051         }
2052         if (!parsed) {
2053                 switch (mimeinfo->type) {
2054                 case MIMETYPE_TEXT:
2055                         if (g_ascii_strcasecmp(mimeinfo->subtype, "plain") == 0 && short_scan) {
2056                                 return 1;
2057                         }
2058                         break;
2059
2060                 case MIMETYPE_MESSAGE:
2061                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2062                                 procmime_parse_message_rfc822(mimeinfo, short_scan);
2063                         }
2064                         if (g_ascii_strcasecmp(mimeinfo->subtype, "disposition-notification") == 0) {
2065                                 procmime_parse_disposition_notification(mimeinfo,
2066                                         original_msgid, disposition_notification_hdr, short_scan);
2067                         }
2068                         break;
2069
2070                 case MIMETYPE_MULTIPART:
2071                         procmime_parse_multipart(mimeinfo, short_scan);
2072                         break;
2073
2074                 case MIMETYPE_APPLICATION:
2075                         if (g_ascii_strcasecmp(mimeinfo->subtype, "octet-stream") == 0
2076                         && original_msgid && *original_msgid
2077                         && disposition_notification_hdr && *disposition_notification_hdr) {
2078                                 procmime_parse_disposition_notification(mimeinfo,
2079                                         original_msgid, disposition_notification_hdr, short_scan);
2080                         }
2081                         break;
2082                 default:
2083                         break;
2084                 }
2085         }
2086
2087         return result;
2088 }
2089
2090 static gchar *typenames[] = {
2091     "text",
2092     "image",
2093     "audio",
2094     "video",
2095     "application",
2096     "message",
2097     "multipart",
2098     "unknown",
2099 };
2100
2101 static gboolean output_func(GNode *node, gpointer data)
2102 {
2103         guint i, depth;
2104         MimeInfo *mimeinfo = (MimeInfo *) node->data;
2105
2106         depth = g_node_depth(node);
2107         for (i = 0; i < depth; i++)
2108                 g_print("    ");
2109         g_print("%s/%s (offset:%d length:%d encoding: %d)\n", typenames[mimeinfo->type], mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
2110
2111         return FALSE;
2112 }
2113
2114 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
2115 {
2116         g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
2117 }
2118
2119 static MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset, gboolean short_scan)
2120 {
2121         MimeInfo *mimeinfo;
2122         GStatBuf buf;
2123
2124         if (g_stat(filename, &buf) < 0) {
2125                 FILE_OP_ERROR(filename, "stat");
2126                 return NULL;
2127         }
2128
2129         mimeinfo = procmime_mimeinfo_new();
2130         mimeinfo->content = MIMECONTENT_FILE;
2131         mimeinfo->encoding_type = ENC_UNKNOWN;
2132         mimeinfo->type = MIMETYPE_MESSAGE;
2133         mimeinfo->subtype = g_strdup("rfc822");
2134         mimeinfo->data.filename = g_strdup(filename);
2135         mimeinfo->offset = offset;
2136         mimeinfo->length = buf.st_size - offset;
2137
2138         procmime_parse_message_rfc822(mimeinfo, short_scan);
2139         if (debug_get_mode())
2140                 output_mime_structure(mimeinfo, 0);
2141
2142         return mimeinfo;
2143 }
2144
2145 static MimeInfo *procmime_scan_file_full(const gchar *filename, gboolean short_scan)
2146 {
2147         MimeInfo *mimeinfo;
2148
2149         cm_return_val_if_fail(filename != NULL, NULL);
2150
2151         mimeinfo = procmime_scan_file_with_offset(filename, 0, short_scan);
2152
2153         return mimeinfo;
2154 }
2155
2156 MimeInfo *procmime_scan_file(const gchar *filename)
2157 {
2158         return procmime_scan_file_full(filename, FALSE);
2159 }
2160
2161 static MimeInfo *procmime_scan_file_short(const gchar *filename)
2162 {
2163         return procmime_scan_file_full(filename, TRUE);
2164 }
2165
2166 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan)
2167 {
2168         FILE *fp;
2169         MimeInfo *mimeinfo;
2170         gchar buf[BUFFSIZE];
2171         gint offset = 0;
2172
2173         cm_return_val_if_fail(filename != NULL, NULL);
2174
2175         /* Open file */
2176         if ((fp = claws_fopen(filename, "rb")) == NULL)
2177                 return NULL;
2178         /* Skip queue header */
2179         while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
2180                 /* new way */
2181                 if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
2182                         strlen("X-Claws-End-Special-Headers:"))) ||
2183                    (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
2184                         strlen("X-Sylpheed-End-Special-Headers:"))))
2185                         break;
2186                 /* old way */
2187                 if (buf[0] == '\r' || buf[0] == '\n') break;
2188                 /* from other mailers */
2189                 if (!strncmp(buf, "Date: ", 6)
2190                 ||  !strncmp(buf, "To: ", 4)
2191                 ||  !strncmp(buf, "From: ", 6)
2192                 ||  !strncmp(buf, "Subject: ", 9)) {
2193                         rewind(fp);
2194                         break;
2195                 }
2196         }
2197         offset = ftell(fp);
2198         claws_fclose(fp);
2199
2200         mimeinfo = procmime_scan_file_with_offset(filename, offset, short_scan);
2201
2202         return mimeinfo;
2203 }
2204
2205 MimeInfo *procmime_scan_queue_file(const gchar *filename)
2206 {
2207         return procmime_scan_queue_file_full(filename, FALSE);
2208 }
2209
2210 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename)
2211 {
2212         return procmime_scan_queue_file_full(filename, TRUE);
2213 }
2214
2215 typedef enum {
2216     ENC_AS_TOKEN,
2217     ENC_AS_QUOTED_STRING,
2218     ENC_AS_EXTENDED,
2219     ENC_AS_ENCWORD
2220 } EncodeAs;
2221
2222 typedef struct _ParametersData {
2223         FILE *fp;
2224         guint len;
2225         gint error;
2226 } ParametersData;
2227
2228 static void write_parameters(gpointer key, gpointer value, gpointer user_data)
2229 {
2230         gchar *param = key;
2231         gchar *val = value, *valpos, *tmp;
2232         ParametersData *pdata = (ParametersData *)user_data;
2233         GString *buf = g_string_new("");
2234         gint len;
2235
2236         EncodeAs encas = ENC_AS_TOKEN;
2237
2238         for (valpos = val; *valpos != 0; valpos++) {
2239                 if (!IS_ASCII(*valpos)) {
2240                         encas = ENC_AS_ENCWORD;
2241                         break;
2242                 }
2243
2244                 /* CTLs */
2245                 if (((*valpos >= 0) && (*valpos < 037)) || (*valpos == 0177)) {
2246                         encas = ENC_AS_QUOTED_STRING;
2247                         continue;
2248                 }
2249
2250                 /* tspecials + SPACE */
2251                 switch (*valpos) {
2252                 case ' ':
2253                 case '(':
2254                 case ')':
2255                 case '<':
2256                 case '>':
2257                 case '@':
2258                 case ',':
2259                 case ';':
2260                 case ':':
2261                 case '\\':
2262                 case '"':
2263                 case '/':
2264                 case '[':
2265                 case ']':
2266                 case '?':
2267                 case '=':
2268                         encas = ENC_AS_QUOTED_STRING;
2269                         continue;
2270                 }
2271         }
2272
2273         switch (encas) {
2274         case ENC_AS_TOKEN:
2275                 g_string_append_printf(buf, "%s=%s", param, val);
2276                 break;
2277
2278         case ENC_AS_QUOTED_STRING:
2279                 g_string_append_printf(buf, "%s=\"%s\"", param, val);
2280                 break;
2281
2282 #if 0 /* we don't use that for now */
2283         case ENC_AS_EXTENDED:
2284                 if (!g_utf8_validate(val, -1, NULL))
2285                         g_string_append_printf(buf, "%s*=%s''", param,
2286                                 conv_get_locale_charset_str());
2287                 else
2288                         g_string_append_printf(buf, "%s*=%s''", param,
2289                                 CS_INTERNAL);
2290                 for (valpos = val; *valpos != '\0'; valpos++) {
2291                         if (IS_ASCII(*valpos) && isalnum(*valpos)) {
2292                                 g_string_append_printf(buf, "%c", *valpos);
2293                         } else {
2294                                 gchar hexstr[3] = "XX";
2295                                 get_hex_str(hexstr, *valpos);
2296                                 g_string_append_printf(buf, "%%%s", hexstr);
2297                         }
2298                 }
2299                 break;
2300 #else
2301         case ENC_AS_EXTENDED:
2302                 debug_print("Unhandled ENC_AS_EXTENDED.\n");
2303                 break;
2304 #endif
2305         case ENC_AS_ENCWORD:
2306                 len = MAX(strlen(val)*6, 512);
2307                 tmp = g_malloc(len+1);
2308                 codeconv_set_strict(TRUE);
2309                 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2310                         prefs_common.outgoing_charset);
2311                 codeconv_set_strict(FALSE);
2312                 if (!tmp || !*tmp) {
2313                         codeconv_set_strict(TRUE);
2314                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2315                                 conv_get_outgoing_charset_str());
2316                         codeconv_set_strict(FALSE);
2317                 }
2318                 if (!tmp || !*tmp) {
2319                         codeconv_set_strict(TRUE);
2320                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2321                                 CS_UTF_8);
2322                         codeconv_set_strict(FALSE);
2323                 }
2324                 if (!tmp || !*tmp) {
2325                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2326                                 CS_UTF_8);
2327                 }
2328                 g_string_append_printf(buf, "%s=\"%s\"", param, tmp);
2329                 g_free(tmp);
2330                 break;
2331
2332         }
2333
2334         if (buf->str && strlen(buf->str)) {
2335                 tmp = strstr(buf->str, "\n");
2336                 if (tmp)
2337                         len = (tmp - buf->str);
2338                 else
2339                         len = strlen(buf->str);
2340                 if (pdata->len + len > 76) {
2341                         if (fprintf(pdata->fp, ";\n %s", buf->str) < 0)
2342                                 pdata->error = TRUE;
2343                         pdata->len = strlen(buf->str) + 1;
2344                 } else {
2345                         if (fprintf(pdata->fp, "; %s", buf->str) < 0)
2346                                 pdata->error = TRUE;
2347                         pdata->len += strlen(buf->str) + 2;
2348                 }
2349         }
2350         g_string_free(buf, TRUE);
2351 }
2352
2353 #define TRY(func) { \
2354         if (!(func)) { \
2355                 return -1; \
2356         } \
2357 }
2358
2359 int procmime_write_mime_header(MimeInfo *mimeinfo, FILE *fp)
2360 {
2361         struct TypeTable *type_table;
2362         ParametersData *pdata = g_new0(ParametersData, 1);
2363         debug_print("procmime_write_mime_header\n");
2364
2365         pdata->fp = fp;
2366         pdata->error = FALSE;
2367         for (type_table = mime_type_table; type_table->str != NULL; type_table++)
2368                 if (mimeinfo->type == type_table->type) {
2369                         gchar *buf = g_strdup_printf(
2370                                 "Content-Type: %s/%s", type_table->str, mimeinfo->subtype);
2371                         if (fprintf(fp, "%s", buf) < 0) {
2372                                 g_free(buf);
2373                                 g_free(pdata);
2374                                 return -1;
2375                         }
2376                         pdata->len = strlen(buf);
2377                         g_free(buf);
2378                         break;
2379                 }
2380         g_hash_table_foreach(mimeinfo->typeparameters, write_parameters, pdata);
2381         if (pdata->error == TRUE) {
2382                 g_free(pdata);
2383                 return -1;
2384         }
2385         g_free(pdata);
2386
2387         TRY(fprintf(fp, "\n") >= 0);
2388
2389         if (mimeinfo->encoding_type != ENC_UNKNOWN)
2390                 TRY(fprintf(fp, "Content-Transfer-Encoding: %s\n", procmime_get_encoding_str(mimeinfo->encoding_type)) >= 0);
2391
2392         if (mimeinfo->description != NULL)
2393                 TRY(fprintf(fp, "Content-Description: %s\n", mimeinfo->description) >= 0);
2394
2395         if (mimeinfo->id != NULL)
2396                 TRY(fprintf(fp, "Content-ID: %s\n", mimeinfo->id) >= 0);
2397
2398         if (mimeinfo->location != NULL)
2399                 TRY(fprintf(fp, "Content-Location: %s\n", mimeinfo->location) >= 0);
2400
2401         if (mimeinfo->disposition != DISPOSITIONTYPE_UNKNOWN) {
2402                 ParametersData *pdata = g_new0(ParametersData, 1);
2403                 gchar *buf = NULL;
2404                 if (mimeinfo->disposition == DISPOSITIONTYPE_INLINE)
2405                         buf = g_strdup("Content-Disposition: inline");
2406                 else if (mimeinfo->disposition == DISPOSITIONTYPE_ATTACHMENT)
2407                         buf = g_strdup("Content-Disposition: attachment");
2408                 else
2409                         buf = g_strdup("Content-Disposition: unknown");
2410
2411                 if (fprintf(fp, "%s", buf) < 0) {
2412                         g_free(buf);
2413                         g_free(pdata);
2414                         return -1;
2415                 }
2416                 pdata->len = strlen(buf);
2417                 g_free(buf);
2418
2419                 pdata->fp = fp;
2420                 pdata->error = FALSE;
2421                 g_hash_table_foreach(mimeinfo->dispositionparameters, write_parameters, pdata);
2422                 if (pdata->error == TRUE) {
2423                         g_free(pdata);
2424                         return -1;
2425                 }
2426                 g_free(pdata);
2427                 TRY(fprintf(fp, "\n") >= 0);
2428         }
2429
2430         TRY(fprintf(fp, "\n") >= 0);
2431
2432         return 0;
2433 }
2434
2435 static gint procmime_write_message_rfc822(MimeInfo *mimeinfo, FILE *fp)
2436 {
2437         FILE *infp;
2438         GNode *childnode;
2439         MimeInfo *child;
2440         gchar buf[BUFFSIZE];
2441         gboolean skip = FALSE;;
2442         size_t len;
2443
2444         debug_print("procmime_write_message_rfc822\n");
2445
2446         /* write header */
2447         switch (mimeinfo->content) {
2448         case MIMECONTENT_FILE:
2449                 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2450                         FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2451                         return -1;
2452                 }
2453                 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2454                         FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2455                         claws_fclose(infp);
2456                         return -1;
2457                 }
2458                 while (claws_fgets(buf, sizeof(buf), infp) == buf) {
2459                         strcrchomp(buf);
2460                         if (buf[0] == '\n' && buf[1] == '\0')
2461                                 break;
2462                         if (skip && (buf[0] == ' ' || buf[0] == '\t'))
2463                                 continue;
2464                         if (g_ascii_strncasecmp(buf, "MIME-Version:", 13) == 0 ||
2465                             g_ascii_strncasecmp(buf, "Content-Type:", 13) == 0 ||
2466                             g_ascii_strncasecmp(buf, "Content-Transfer-Encoding:", 26) == 0 ||
2467                             g_ascii_strncasecmp(buf, "Content-Description:", 20) == 0 ||
2468                             g_ascii_strncasecmp(buf, "Content-ID:", 11) == 0 ||
2469                             g_ascii_strncasecmp(buf, "Content-Location:", 17) == 0 ||
2470                             g_ascii_strncasecmp(buf, "Content-Disposition:", 20) == 0) {
2471                                 skip = TRUE;
2472                                 continue;
2473                         }
2474                         len = strlen(buf);
2475                         if (claws_fwrite(buf, sizeof(gchar), len, fp) < len) {
2476                                 g_warning("failed to dump %"G_GSIZE_FORMAT" bytes from file", len);
2477                                 claws_fclose(infp);
2478                                 return -1;
2479                         }
2480                         skip = FALSE;
2481                 }
2482                 claws_fclose(infp);
2483                 break;
2484
2485         case MIMECONTENT_MEM:
2486                 len = strlen(mimeinfo->data.mem);
2487                 if (claws_fwrite(mimeinfo->data.mem, sizeof(gchar), len, fp) < len) {
2488                         g_warning("failed to dump %"G_GSIZE_FORMAT" bytes from mem", len);
2489                         return -1;
2490                 }
2491                 break;
2492
2493         default:
2494                 break;
2495         }
2496
2497         childnode = mimeinfo->node->children;
2498         if (childnode == NULL)
2499                 return -1;
2500
2501         child = (MimeInfo *) childnode->data;
2502         if (fprintf(fp, "MIME-Version: 1.0\n") < 0) {
2503                 g_warning("failed to write mime version");
2504                 return -1;
2505         }
2506         if (procmime_write_mime_header(child, fp) < 0)
2507                 return -1;
2508         return procmime_write_mimeinfo(child, fp);
2509 }
2510
2511 static gint procmime_write_multipart(MimeInfo *mimeinfo, FILE *fp)
2512 {
2513         FILE *infp;
2514         GNode *childnode;
2515         gchar *boundary, *str, *str2;
2516         gchar buf[BUFFSIZE];
2517         gboolean firstboundary;
2518         size_t len;
2519
2520         debug_print("procmime_write_multipart\n");
2521
2522         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
2523
2524         switch (mimeinfo->content) {
2525         case MIMECONTENT_FILE:
2526                 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2527                         FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2528                         return -1;
2529                 }
2530                 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2531                         FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2532                         claws_fclose(infp);
2533                         return -1;
2534                 }
2535                 while (claws_fgets(buf, sizeof(buf), infp) == buf) {
2536                         if (IS_BOUNDARY(buf, boundary, strlen(boundary)))
2537                                 break;
2538                         len = strlen(buf);
2539                         if (claws_fwrite(buf, sizeof(gchar), len, fp) < len) {
2540                                 g_warning("failed to write %"G_GSIZE_FORMAT, len);
2541                                 claws_fclose(infp);
2542                                 return -1;
2543                         }
2544                 }
2545                 claws_fclose(infp);
2546                 break;
2547
2548         case MIMECONTENT_MEM:
2549                 str = g_strdup(mimeinfo->data.mem);
2550                 if (((str2 = strstr(str, boundary)) != NULL) && ((str2 - str) >= 2) &&
2551                     (*(str2 - 1) == '-') && (*(str2 - 2) == '-'))
2552                         *(str2 - 2) = '\0';
2553                 len = strlen(str);
2554                 if (claws_fwrite(str, sizeof(gchar), len, fp) < len) {
2555                         g_warning("failed to write %"G_GSIZE_FORMAT" from mem", len);
2556                         g_free(str);
2557                         return -1;
2558                 }
2559                 g_free(str);
2560                 break;
2561
2562         default:
2563                 break;
2564         }
2565
2566         childnode = mimeinfo->node->children;
2567         firstboundary = TRUE;
2568         while (childnode != NULL) {
2569                 MimeInfo *child = childnode->data;
2570
2571                 if (firstboundary)
2572                         firstboundary = FALSE;
2573                 else
2574                         TRY(fprintf(fp, "\n") >= 0);
2575
2576                 TRY(fprintf(fp, "--%s\n", boundary) >= 0);
2577
2578                 if (procmime_write_mime_header(child, fp) < 0)
2579                         return -1;
2580                 if (procmime_write_mimeinfo(child, fp) < 0)
2581                         return -1;
2582
2583                 childnode = g_node_next_sibling(childnode);
2584         }
2585         TRY(fprintf(fp, "\n--%s--\n", boundary) >= 0);
2586
2587         return 0;
2588 }
2589
2590 gint procmime_write_mimeinfo(MimeInfo *mimeinfo, FILE *fp)
2591 {
2592         FILE *infp;
2593         size_t len;
2594         debug_print("procmime_write_mimeinfo\n");
2595
2596         if (G_NODE_IS_LEAF(mimeinfo->node)) {
2597                 switch (mimeinfo->content) {
2598                 case MIMECONTENT_FILE:
2599                         if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2600                                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2601                                 return -1;
2602                         }
2603                         copy_file_part_to_fp(infp, mimeinfo->offset, mimeinfo->length, fp);
2604                         claws_fclose(infp);
2605                         return 0;
2606
2607                 case MIMECONTENT_MEM:
2608                         len = strlen(mimeinfo->data.mem);
2609                         if (claws_fwrite(mimeinfo->data.mem, sizeof(gchar), len, fp) < len)
2610                                 return -1;
2611                         return 0;
2612
2613                 default:
2614                         return 0;
2615                 }
2616         } else {
2617                 /* Call writer for mime type */
2618                 switch (mimeinfo->type) {
2619                 case MIMETYPE_MESSAGE:
2620                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2621                                 return procmime_write_message_rfc822(mimeinfo, fp);
2622                         }
2623                         break;
2624
2625                 case MIMETYPE_MULTIPART:
2626                         return procmime_write_multipart(mimeinfo, fp);
2627
2628                 default:
2629                         break;
2630                 }
2631
2632                 return -1;
2633         }
2634
2635         return 0;
2636 }
2637
2638 gchar *procmime_get_part_file_name(MimeInfo *mimeinfo)
2639 {
2640         gchar *base;
2641
2642         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
2643                 base = g_strdup("mimetmp.html");
2644         else {
2645                 const gchar *basetmp;
2646                 gchar *basename;
2647
2648                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
2649                 if (basetmp == NULL)
2650                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
2651                 if (basetmp == NULL)
2652                         basetmp = "mimetmp";
2653                 basename = g_path_get_basename(basetmp);
2654                 if (*basename == '\0') {
2655                         g_free(basename);
2656                         basename = g_strdup("mimetmp");
2657                 }
2658                 base = conv_filename_from_utf8(basename);
2659                 g_free(basename);
2660                 subst_for_shellsafe_filename(base);
2661         }
2662
2663         return base;
2664 }
2665
2666 void *procmime_get_part_as_string(MimeInfo *mimeinfo,
2667                 gboolean null_terminate)
2668 {
2669         FILE *infp;
2670         gchar *data;
2671         gint length, readlength;
2672
2673         cm_return_val_if_fail(mimeinfo != NULL, NULL);
2674
2675         if (mimeinfo->encoding_type != ENC_BINARY &&
2676                         !procmime_decode_content(mimeinfo))
2677                 return NULL;
2678
2679         if (mimeinfo->content == MIMECONTENT_MEM)
2680                 return g_strdup(mimeinfo->data.mem);
2681
2682         if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2683                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2684                 return NULL;
2685         }
2686
2687         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2688                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2689                 claws_fclose(infp);
2690                 return NULL;
2691         }
2692
2693         length = mimeinfo->length;
2694
2695         data = g_malloc(null_terminate ? length + 1 : length);
2696         if (data == NULL) {
2697                 g_warning("Could not allocate %d bytes for procmime_get_part_as_string.\n",
2698                                 (null_terminate ? length + 1 : length));
2699                 claws_fclose(infp);
2700                 return NULL;
2701         }
2702
2703         readlength = claws_fread(data, length, 1, infp);
2704         if (readlength <= 0) {
2705                 FILE_OP_ERROR(mimeinfo->data.filename, "fread");
2706                 g_free(data);
2707                 claws_fclose(infp);
2708                 return NULL;
2709         }
2710
2711         claws_fclose(infp);
2712
2713         if (null_terminate)
2714                 data[length] = '\0';
2715
2716         return data;
2717 }
2718
2719 /* Returns an open GInputStream. The caller should just
2720  * read mimeinfo->length bytes from it and then release it. */
2721 GInputStream *procmime_get_part_as_inputstream(MimeInfo *mimeinfo,
2722                 GError **error)
2723 {
2724         cm_return_val_if_fail(mimeinfo != NULL, NULL);
2725
2726         if (mimeinfo->encoding_type != ENC_BINARY &&
2727                         !procmime_decode_content(mimeinfo))
2728                 return NULL;
2729
2730         if (mimeinfo->content == MIMECONTENT_MEM) {
2731                 /* NULL for destroy func, since we're not copying
2732                  * the data for the stream. */
2733                 return g_memory_input_stream_new_from_data(
2734                                 mimeinfo->data.mem,
2735                                 mimeinfo->length, NULL);
2736         } else {
2737                 return g_memory_input_stream_new_from_data(
2738                                 procmime_get_part_as_string(mimeinfo, FALSE),
2739                                 mimeinfo->length, g_free);
2740         }
2741 }