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 #define _GNU_SOURCE
  25 #include <stdio.h>
  26
  27 #include "defs.h"
  28
  29 #include <glib.h>
  30 #include <glib/gi18n.h>
  31 #include <string.h>
  32 #if HAVE_LOCALE_H
  33 #  include <locale.h>
  34 #endif
  35 #include <ctype.h>
  36 #include <sys/types.h>
  37 #include <sys/stat.h>
  38 #include <unistd.h>
  39 #include <errno.h>
  40
  41 #include "procmime.h"
  42 #include "procheader.h"
  43 #include "quoted-printable.h"
  44 #include "uuencode.h"
  45 #include "unmime.h"
  46 #include "html.h"
  47 #include "enriched.h"
  48 #include "codeconv.h"
  49 #include "utils.h"
  50 #include "prefs_common.h"
  51 #include "prefs_gtk.h"
  52 #include "alertpanel.h"
  53 #include "timing.h"
  54 #include "privacy.h"
  55
  56 static GHashTable *procmime_get_mime_type_table (void);
  57 static MimeInfo *procmime_scan_file_short(const gchar *filename);
  58 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename);
  59 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan);
  60
  61 MimeInfo *procmime_mimeinfo_new(void)
  62 {
  63         MimeInfo *mimeinfo;
  64
  65         mimeinfo = g_new0(MimeInfo, 1);
  66         mimeinfo->content        = MIMECONTENT_EMPTY;
  67         mimeinfo->data.filename  = NULL;
  68
  69         mimeinfo->type           = MIMETYPE_UNKNOWN;
  70         mimeinfo->encoding_type  = ENC_UNKNOWN;
  71         mimeinfo->typeparameters = g_hash_table_new(g_str_hash, g_str_equal);
  72
  73         mimeinfo->disposition    = DISPOSITIONTYPE_UNKNOWN;
  74         mimeinfo->dispositionparameters
  75                                  = g_hash_table_new(g_str_hash, g_str_equal);
  76
  77         mimeinfo->node           = g_node_new(mimeinfo);
  78
  79         return mimeinfo;
  80 }
  81
  82 static gboolean procmime_mimeinfo_parameters_destroy(gpointer key, gpointer value, gpointer user_data)
  83 {
  84         g_free(key);
  85         g_free(value);
  86
  87         return TRUE;
  88 }
  89
  90 static gchar *forced_charset = NULL;
  91
  92 void procmime_force_charset(const gchar *str)
  93 {
  94         g_free(forced_charset);
  95         forced_charset = NULL;
  96         if (str)
  97                 forced_charset = g_strdup(str);
  98 }
  99
 100 static EncodingType forced_encoding = 0;
 101
 102 void procmime_force_encoding(EncodingType encoding)
 103 {
 104         forced_encoding = encoding;
 105 }
 106
 107 static gboolean free_func(GNode *node, gpointer data)
 108 {
 109         MimeInfo *mimeinfo = (MimeInfo *) node->data;
 110
 111         switch (mimeinfo->content) {
 112         case MIMECONTENT_FILE:
 113                 if (mimeinfo->tmp)
 114                         claws_unlink(mimeinfo->data.filename);
 115                 g_free(mimeinfo->data.filename);
 116                 break;
 117
 118         case MIMECONTENT_MEM:
 119                 if (mimeinfo->tmp)
 120                         g_free(mimeinfo->data.mem);
 121         default:
 122                 break;
 123         }
 124
 125         g_free(mimeinfo->subtype);
 126         g_free(mimeinfo->description);
 127         g_free(mimeinfo->id);
 128         g_free(mimeinfo->location);
 129
 130         g_hash_table_foreach_remove(mimeinfo->typeparameters,
 131                 procmime_mimeinfo_parameters_destroy, NULL);
 132         g_hash_table_destroy(mimeinfo->typeparameters);
 133         g_hash_table_foreach_remove(mimeinfo->dispositionparameters,
 134                 procmime_mimeinfo_parameters_destroy, NULL);
 135         g_hash_table_destroy(mimeinfo->dispositionparameters);
 136
 137         if (mimeinfo->privacy)
 138                 privacy_free_privacydata(mimeinfo->privacy);
 139
 140         return FALSE;
 141 }
 142
 143 void procmime_mimeinfo_free_all(MimeInfo **mimeinfo_ptr)
 144 {
 145         MimeInfo *mimeinfo = *mimeinfo_ptr;
 146         GNode *node;
 147
 148         if (!mimeinfo)
 149                 return;
 150
 151         node = mimeinfo->node;
 152         g_node_traverse(node, G_IN_ORDER, G_TRAVERSE_ALL, -1, free_func, NULL);
 153
 154         g_node_destroy(node);
 155
 156         g_free(mimeinfo);
 157         *mimeinfo_ptr = NULL;
 158 }
 159
 160 MimeInfo *procmime_mimeinfo_parent(MimeInfo *mimeinfo)
 161 {
 162         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 163         cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
 164
 165         if (mimeinfo->node->parent == NULL)
 166                 return NULL;
 167         return (MimeInfo *) mimeinfo->node->parent->data;
 168 }
 169
 170 MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
 171 {
 172         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 173         cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
 174
 175         if (mimeinfo->node->children)
 176                 return (MimeInfo *) mimeinfo->node->children->data;
 177         if (mimeinfo->node->next)
 178                 return (MimeInfo *) mimeinfo->node->next->data;
 179
 180         if (mimeinfo->node->parent == NULL)
 181                 return NULL;
 182
 183         while (mimeinfo->node->parent != NULL) {
 184                 mimeinfo = (MimeInfo *) mimeinfo->node->parent->data;
 185                 if (mimeinfo->node->next)
 186                         return (MimeInfo *) mimeinfo->node->next->data;
 187         }
 188
 189         return NULL;
 190 }
 191
 192 MimeInfo *procmime_scan_message(MsgInfo *msginfo)
 193 {
 194         gchar *filename;
 195         MimeInfo *mimeinfo;
 196
 197         filename = procmsg_get_message_file_path(msginfo);
 198         if (!filename || !is_file_exist(filename)) {
 199                 g_free(filename);
 200                 return NULL;
 201         }
 202
 203         if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
 204             !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
 205                 mimeinfo = procmime_scan_file(filename);
 206         else
 207                 mimeinfo = procmime_scan_queue_file(filename);
 208         g_free(filename);
 209
 210         return mimeinfo;
 211 }
 212
 213 MimeInfo *procmime_scan_message_short(MsgInfo *msginfo)
 214 {
 215         gchar *filename;
 216         MimeInfo *mimeinfo;
 217
 218         filename = procmsg_get_message_file_path(msginfo);
 219         if (!filename || !is_file_exist(filename)) {
 220                 g_free(filename);
 221                 return NULL;
 222         }
 223
 224         if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
 225             !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
 226                 mimeinfo = procmime_scan_file_short(filename);
 227         else
 228                 mimeinfo = procmime_scan_queue_file_short(filename);
 229         g_free(filename);
 230
 231         return mimeinfo;
 232 }
 233
 234 enum
 235 {
 236         H_CONTENT_TRANSFER_ENCODING = 0,
 237         H_CONTENT_TYPE              = 1,
 238         H_CONTENT_DISPOSITION       = 2,
 239         H_CONTENT_DESCRIPTION       = 3,
 240         H_SUBJECT                   = 4
 241 };
 242
 243 const gchar *procmime_mimeinfo_get_parameter(MimeInfo *mimeinfo, const gchar *name)
 244 {
 245         const gchar *value;
 246
 247         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 248         cm_return_val_if_fail(name != NULL, NULL);
 249
 250         value = g_hash_table_lookup(mimeinfo->dispositionparameters, name);
 251         if (value == NULL)
 252                 value = g_hash_table_lookup(mimeinfo->typeparameters, name);
 253
 254         return value;
 255 }
 256
 257 #ifdef HAVE_FGETS_UNLOCKED
 258 #define SC_FGETS fgets_unlocked
 259 #define SC_FPUTS fputs_unlocked
 260 #define SC_FPUTC fputc_unlocked
 261 #define SC_FREAD fread_unlocked
 262 #define SC_FWRITE fwrite_unlocked
 263 #define SC_FEOF feof_unlocked
 264 #define SC_FERROR ferror_unlocked
 265
 266 static FILE *procmime_fopen(const gchar *file, const gchar *mode)
 267 {
 268         FILE *fp = g_fopen(file, mode);
 269         if (!fp)
 270                 return NULL;
 271         flockfile(fp);
 272         return fp;
 273 }
 274 static int procmime_fclose(FILE *fp)
 275 {
 276         funlockfile(fp);
 277         return fclose(fp);
 278 }
 279 #else
 280 #define SC_FGETS fgets
 281 #define SC_FPUTS fputs
 282 #define SC_FPUTC fputc
 283 #define SC_FREAD fread
 284 #define SC_FWRITE fwrite
 285 #define SC_FEOF feof
 286 #define SC_FERROR ferror
 287 #define procmime_fopen g_fopen
 288 #define procmime_fclose fclose
 289 #endif
 290
 291 #define FLUSH_LASTLINE() {                                                      \
 292         if (*lastline != '\0') {                                                \
 293                 gint llen = 0;                                                  \
 294                 strretchomp(lastline);                                          \
 295                 llen = strlen(lastline);                                        \
 296                 if (lastline[llen-1] == ' ' && strcmp(lastline,"-- ")) {        \
 297                         /* this is flowed */                                    \
 298                         if (delsp)                                              \
 299                                 lastline[llen-1] = '\0';                        \
 300                         if (SC_FPUTS(lastline, outfp) == EOF)                   \
 301                                 err = TRUE;                                     \
 302                 } else {                                                        \
 303                         if (SC_FPUTS(lastline, outfp) == EOF)                   \
 304                                 err = TRUE;                                     \
 305                         if (SC_FPUTS("\n", outfp) == EOF)                               \
 306                                 err = TRUE;                                     \
 307                 }                                                               \
 308         }                                                                       \
 309         strcpy(lastline, buf);                                                  \
 310 }
 311
 312 gboolean procmime_decode_content(MimeInfo *mimeinfo)
 313 {
 314         gchar buf[BUFFSIZE];
 315         gint readend;
 316         gchar *tmpfilename;
 317         FILE *outfp, *infp;
 318         GStatBuf statbuf;
 319         gboolean tmp_file = FALSE;
 320         gboolean flowed = FALSE;
 321         gboolean delsp = FALSE;
 322         gboolean err = FALSE;
 323         gint state = 0;
 324         guint save = 0;
 325
 326         cm_return_val_if_fail(mimeinfo != NULL, FALSE);
 327
 328         EncodingType encoding = forced_encoding
 329                                 ? forced_encoding
 330                                 : mimeinfo->encoding_type;
 331         gchar lastline[BUFFSIZE];
 332         memset(lastline, 0, BUFFSIZE);
 333
 334         if (prefs_common.respect_flowed_format &&
 335             mimeinfo->type == MIMETYPE_TEXT &&
 336             !strcasecmp(mimeinfo->subtype, "plain")) {
 337                 if (procmime_mimeinfo_get_parameter(mimeinfo, "format") != NULL &&
 338                     !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "format"),"flowed"))
 339                         flowed = TRUE;
 340                 if (flowed &&
 341                     procmime_mimeinfo_get_parameter(mimeinfo, "delsp") != NULL &&
 342                     !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "delsp"),"yes"))
 343                         delsp = TRUE;
 344         }
 345
 346         if (!flowed && (
 347              encoding == ENC_UNKNOWN ||
 348              encoding == ENC_BINARY ||
 349              encoding == ENC_7BIT ||
 350              encoding == ENC_8BIT
 351             ))
 352                 return TRUE;
 353
 354         if (mimeinfo->type == MIMETYPE_MULTIPART || mimeinfo->type == MIMETYPE_MESSAGE)
 355                 return TRUE;
 356
 357         if (mimeinfo->data.filename == NULL)
 358                 return FALSE;
 359
 360         infp = procmime_fopen(mimeinfo->data.filename, "rb");
 361         if (!infp) {
 362                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
 363                 return FALSE;
 364         }
 365         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
 366                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
 367                 procmime_fclose(infp);
 368                 return FALSE;
 369         }
 370
 371         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 372         if (!outfp) {
 373                 perror("tmpfile");
 374                 procmime_fclose(infp);
 375                 return FALSE;
 376         }
 377 #ifdef HAVE_FGETS_UNLOCKED
 378         flockfile(outfp);
 379 #endif
 380         tmp_file = TRUE;
 381         readend = mimeinfo->offset + mimeinfo->length;
 382
 383         if (encoding == ENC_QUOTED_PRINTABLE) {
 384                 while ((ftell(infp) < readend) && (SC_FGETS(buf, sizeof(buf), infp) != NULL)) {
 385                         gint len;
 386                         len = qp_decode_line(buf);
 387                         buf[len]='\0';
 388                         if (!flowed) {
 389                                 if (SC_FWRITE(buf, 1, len, outfp) < len)
 390                                         err = TRUE;
 391                         } else {
 392                                 FLUSH_LASTLINE();
 393                         }
 394                 }
 395                 if (flowed)
 396                         FLUSH_LASTLINE();
 397         } else if (encoding == ENC_BASE64) {
 398                 gchar outbuf[BUFFSIZE];
 399                 gint len, inlen, inread;
 400                 gboolean got_error = FALSE;
 401                 gboolean uncanonicalize = FALSE;
 402                 FILE *tmpfp = NULL;
 403                 gboolean null_bytes = FALSE;
 404                 gboolean starting = TRUE;
 405
 406                 if (mimeinfo->type == MIMETYPE_TEXT ||
 407                     mimeinfo->type == MIMETYPE_MESSAGE) {
 408                         uncanonicalize = TRUE;
 409                         tmpfp = my_tmpfile();
 410                         if (!tmpfp) {
 411                                 perror("my_tmpfile");
 412                                 if (tmp_file)
 413                                         procmime_fclose(outfp);
 414                                 procmime_fclose(infp);
 415                                 return FALSE;
 416                         }
 417 #ifdef HAVE_FGETS_UNLOCKED
 418                         flockfile(tmpfp);
 419 #endif
 420                 } else
 421                         tmpfp = outfp;
 422
 423                 while ((inlen = MIN(readend - ftell(infp), sizeof(buf))) > 0 && !err) {
 424                         inread = SC_FREAD(buf, 1, inlen, infp);
 425                         len = g_base64_decode_step(buf, inlen, outbuf, &state, &save);
 426                         if (uncanonicalize == TRUE && strlen(outbuf) < len && starting) {
 427                                 uncanonicalize = FALSE;
 428                                 null_bytes = TRUE;
 429                         }
 430                         starting = FALSE;
 431                         if (((inread != inlen) || len < 0) && !got_error) {
 432                                 g_warning("Bad BASE64 content.");
 433                                 if (SC_FWRITE(_("[Error decoding BASE64]\n"),
 434                                         sizeof(gchar),
 435                                         strlen(_("[Error decoding BASE64]\n")),
 436                                         tmpfp) < strlen(_("[Error decoding BASE64]\n")))
 437                                         g_warning("error decoding BASE64");
 438                                 got_error = TRUE;
 439                                 continue;
 440                         } else if (len >= 0) {
 441                                 /* print out the error message only once
 442                                  * per block */
 443                                 if (null_bytes) {
 444                                         /* we won't uncanonicalize, output to outfp directly */
 445                                         if (SC_FWRITE(outbuf, sizeof(gchar), len, outfp) < len)
 446                                                 err = TRUE;
 447                                 } else {
 448                                         if (SC_FWRITE(outbuf, sizeof(gchar), len, tmpfp) < len)
 449                                                 err = TRUE;
 450                                 }
 451                                 got_error = FALSE;
 452                         }
 453                 }
 454
 455                 if (uncanonicalize) {
 456                         rewind(tmpfp);
 457                         while (SC_FGETS(buf, sizeof(buf), tmpfp) != NULL) {
 458                                 strcrchomp(buf);
 459                                 if (SC_FPUTS(buf, outfp) == EOF)
 460                                         err = TRUE;
 461                         }
 462                 }
 463                 if (tmpfp != outfp)
 464                         procmime_fclose(tmpfp);
 465         } else if (encoding == ENC_X_UUENCODE) {
 466                 gchar outbuf[BUFFSIZE];
 467                 gint len;
 468                 gboolean flag = FALSE;
 469
 470                 while ((ftell(infp) < readend) && (SC_FGETS(buf, sizeof(buf), infp) != NULL)) {
 471                         if (!flag && strncmp(buf,"begin ", 6)) continue;
 472
 473                         if (flag) {
 474                                 len = fromuutobits(outbuf, buf);
 475                                 if (len <= 0) {
 476                                         if (len < 0)
 477                                                 g_warning("Bad UUENCODE content (%d)", len);
 478                                         break;
 479                                 }
 480                                 if (SC_FWRITE(outbuf, sizeof(gchar), len, outfp) < len)
 481                                         err = TRUE;
 482                         } else
 483                                 flag = TRUE;
 484                 }
 485         } else {
 486                 while ((ftell(infp) < readend) && (SC_FGETS(buf, sizeof(buf), infp) != NULL)) {
 487                         if (!flowed) {
 488                                 if (SC_FPUTS(buf, outfp) == EOF)
 489                                         err = TRUE;
 490                         } else {
 491                                 FLUSH_LASTLINE();
 492                         }
 493                 }
 494                 if (flowed)
 495                         FLUSH_LASTLINE();
 496                 if (err == TRUE)
 497                         g_warning("write error");
 498         }
 499
 500         procmime_fclose(outfp);
 501         procmime_fclose(infp);
 502
 503         if (err == TRUE) {
 504                 return FALSE;
 505         }
 506
 507         if (g_stat(tmpfilename, &statbuf) < 0) {
 508                 FILE_OP_ERROR(tmpfilename, "stat");
 509                 return FALSE;
 510         }
 511
 512         if (mimeinfo->tmp)
 513                 claws_unlink(mimeinfo->data.filename);
 514         g_free(mimeinfo->data.filename);
 515         mimeinfo->data.filename = tmpfilename;
 516         mimeinfo->tmp = TRUE;
 517         mimeinfo->offset = 0;
 518         mimeinfo->length = statbuf.st_size;
 519         mimeinfo->encoding_type = ENC_BINARY;
 520
 521         return TRUE;
 522 }
 523
 524 #define B64_LINE_SIZE           57
 525 #define B64_BUFFSIZE            77
 526
 527 gboolean procmime_encode_content(MimeInfo *mimeinfo, EncodingType encoding)
 528 {
 529         FILE *infp = NULL, *outfp;
 530         gint len;
 531         gchar *tmpfilename;
 532         GStatBuf statbuf;
 533         gboolean err = FALSE;
 534
 535         if (mimeinfo->content == MIMECONTENT_EMPTY)
 536                 return TRUE;
 537
 538         if (mimeinfo->encoding_type != ENC_UNKNOWN &&
 539             mimeinfo->encoding_type != ENC_BINARY &&
 540             mimeinfo->encoding_type != ENC_7BIT &&
 541             mimeinfo->encoding_type != ENC_8BIT)
 542                 if(!procmime_decode_content(mimeinfo))
 543                         return FALSE;
 544
 545         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 546         if (!outfp) {
 547                 perror("tmpfile");
 548                 return FALSE;
 549         }
 550 #ifdef HAVE_FGETS_UNLOCKED
 551         flockfile(outfp);
 552 #endif
 553
 554         if (mimeinfo->content == MIMECONTENT_FILE && mimeinfo->data.filename) {
 555                 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
 556                         g_warning("Can't open file %s", mimeinfo->data.filename);
 557                         procmime_fclose(outfp);
 558                         return FALSE;
 559                 }
 560         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 561                 infp = str_open_as_stream(mimeinfo->data.mem);
 562                 if (infp == NULL) {
 563                         procmime_fclose(outfp);
 564                         return FALSE;
 565                 }
 566 #ifdef HAVE_FGETS_UNLOCKED
 567                 flockfile(infp);
 568 #endif
 569         } else {
 570                 procmime_fclose(outfp);
 571                 g_warning("Unknown mimeinfo");
 572                 return FALSE;
 573         }
 574
 575         if (encoding == ENC_BASE64) {
 576                 gchar inbuf[B64_LINE_SIZE], *out;
 577                 FILE *tmp_fp = infp;
 578                 gchar *tmp_file = NULL;
 579
 580                 if (mimeinfo->type == MIMETYPE_TEXT ||
 581                      mimeinfo->type == MIMETYPE_MESSAGE) {
 582                         if (mimeinfo->content == MIMECONTENT_FILE) {
 583                                 tmp_file = get_tmp_file();
 584                                 if (canonicalize_file(mimeinfo->data.filename, tmp_file) < 0) {
 585                                         g_free(tmp_file);
 586                                         procmime_fclose(infp);
 587                                         procmime_fclose(outfp);
 588                                         return FALSE;
 589                                 }
 590                                 if ((tmp_fp = procmime_fopen(tmp_file, "rb")) == NULL) {
 591                                         FILE_OP_ERROR(tmp_file, "fopen");
 592                                         claws_unlink(tmp_file);
 593                                         g_free(tmp_file);
 594                                         procmime_fclose(infp);
 595                                         procmime_fclose(outfp);
 596                                         return FALSE;
 597                                 }
 598                         } else {
 599                                 gchar *out = canonicalize_str(mimeinfo->data.mem);
 600                                 procmime_fclose(infp);
 601                                 infp = str_open_as_stream(out);
 602                                 tmp_fp = infp;
 603                                 g_free(out);
 604                                 if (infp == NULL) {
 605                                         procmime_fclose(outfp);
 606                                         return FALSE;
 607                                 }
 608 #ifdef HAVE_FGETS_UNLOCKED
 609                                 flockfile(infp);
 610 #endif
 611                         }
 612                 }
 613
 614                 while ((len = SC_FREAD(inbuf, sizeof(gchar),
 615                                     B64_LINE_SIZE, tmp_fp))
 616                        == B64_LINE_SIZE) {
 617                         out = g_base64_encode(inbuf, B64_LINE_SIZE);
 618                         if (SC_FPUTS(out, outfp) == EOF)
 619                                 err = TRUE;
 620                         g_free(out);
 621                         if (SC_FPUTC('\n', outfp) == EOF)
 622                                 err = TRUE;
 623                 }
 624                 if (len > 0 && SC_FEOF(tmp_fp)) {
 625                         out = g_base64_encode(inbuf, len);
 626                         if (SC_FPUTS(out, outfp) == EOF)
 627                                 err = TRUE;
 628                         g_free(out);
 629                         if (SC_FPUTC('\n', outfp) == EOF)
 630                                 err = TRUE;
 631                 }
 632
 633                 if (tmp_file) {
 634                         procmime_fclose(tmp_fp);
 635                         claws_unlink(tmp_file);
 636                         g_free(tmp_file);
 637                 }
 638         } else if (encoding == ENC_QUOTED_PRINTABLE) {
 639                 gchar inbuf[BUFFSIZE], outbuf[BUFFSIZE * 4];
 640
 641                 while (SC_FGETS(inbuf, sizeof(inbuf), infp) != NULL) {
 642                         qp_encode_line(outbuf, inbuf);
 643
 644                         if (!strncmp("From ", outbuf, sizeof("From ")-1)) {
 645                                 gchar *tmpbuf = outbuf;
 646
 647                                 tmpbuf += sizeof("From ")-1;
 648
 649                                 if (SC_FPUTS("=46rom ", outfp) == EOF)
 650                                         err = TRUE;
 651                                 if (SC_FPUTS(tmpbuf, outfp) == EOF)
 652                                         err = TRUE;
 653                         } else {
 654                                 if (SC_FPUTS(outbuf, outfp) == EOF)
 655                                         err = TRUE;
 656                         }
 657                 }
 658         } else {
 659                 gchar buf[BUFFSIZE];
 660
 661                 while (SC_FGETS(buf, sizeof(buf), infp) != NULL) {
 662                         strcrchomp(buf);
 663                         if (SC_FPUTS(buf, outfp) == EOF)
 664                                 err = TRUE;
 665                 }
 666         }
 667
 668         procmime_fclose(outfp);
 669         procmime_fclose(infp);
 670
 671         if (err == TRUE)
 672                 return FALSE;
 673
 674         if (mimeinfo->content == MIMECONTENT_FILE) {
 675                 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
 676                         claws_unlink(mimeinfo->data.filename);
 677                 g_free(mimeinfo->data.filename);
 678         } else if (mimeinfo->content == MIMECONTENT_MEM) {
 679                 if (mimeinfo->tmp && (mimeinfo->data.mem != NULL))
 680                         g_free(mimeinfo->data.mem);
 681         }
 682
 683         if (g_stat(tmpfilename, &statbuf) < 0) {
 684                 FILE_OP_ERROR(tmpfilename, "stat");
 685                 return FALSE;
 686         }
 687         mimeinfo->content = MIMECONTENT_FILE;
 688         mimeinfo->data.filename = tmpfilename;
 689         mimeinfo->tmp = TRUE;
 690         mimeinfo->offset = 0;
 691         mimeinfo->length = statbuf.st_size;
 692         mimeinfo->encoding_type = encoding;
 693
 694         return TRUE;
 695 }
 696
 697 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
 698 {
 699         FILE *infp, *outfp;
 700         gchar buf[BUFFSIZE];
 701         gint restlength, readlength;
 702         gint saved_errno = 0;
 703
 704         cm_return_val_if_fail(outfile != NULL, -1);
 705         cm_return_val_if_fail(mimeinfo != NULL, -1);
 706
 707         if (mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
 708                 return -EINVAL;
 709
 710         if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
 711                 saved_errno = errno;
 712                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
 713                 return -(saved_errno);
 714         }
 715         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
 716                 saved_errno = errno;
 717                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
 718                 procmime_fclose(infp);
 719                 return -(saved_errno);
 720         }
 721         if ((outfp = procmime_fopen(outfile, "wb")) == NULL) {
 722                 saved_errno = errno;
 723                 FILE_OP_ERROR(outfile, "fopen");
 724                 procmime_fclose(infp);
 725                 return -(saved_errno);
 726         }
 727
 728         restlength = mimeinfo->length;
 729
 730         while ((restlength > 0) && ((readlength = SC_FREAD(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
 731                 if (SC_FWRITE(buf, 1, readlength, outfp) != readlength) {
 732                         saved_errno = errno;
 733                         procmime_fclose(infp);
 734                         procmime_fclose(outfp);
 735                         return -(saved_errno);
 736                 }
 737                 restlength -= readlength;
 738         }
 739
 740         procmime_fclose(infp);
 741         if (procmime_fclose(outfp) == EOF) {
 742                 saved_errno = errno;
 743                 FILE_OP_ERROR(outfile, "fclose");
 744                 claws_unlink(outfile);
 745                 return -(saved_errno);
 746         }
 747
 748         return 0;
 749 }
 750
 751 gboolean procmime_scan_text_content(MimeInfo *mimeinfo,
 752                 gboolean (*scan_callback)(const gchar *str, gpointer cb_data),
 753                 gpointer cb_data)
 754 {
 755         FILE *tmpfp;
 756         const gchar *src_codeset;
 757         gboolean conv_fail = FALSE;
 758         gchar buf[BUFFSIZE];
 759         gchar *str;
 760         gchar *tmpfile;
 761         gboolean scan_ret = FALSE;
 762
 763         cm_return_val_if_fail(mimeinfo != NULL, TRUE);
 764         cm_return_val_if_fail(scan_callback != NULL, TRUE);
 765
 766         if (!procmime_decode_content(mimeinfo))
 767                 return TRUE;
 768
 769         tmpfile = procmime_get_tmp_file_name(mimeinfo);
 770         if (tmpfile == NULL)
 771                 return TRUE;
 772
 773         if (procmime_get_part(tmpfile, mimeinfo) < 0) {
 774                 g_free(tmpfile);
 775                 return TRUE;
 776         }
 777
 778         tmpfp = procmime_fopen(tmpfile, "rb");
 779         if (tmpfp == NULL) {
 780                 g_free(tmpfile);
 781                 return TRUE;
 782         }
 783
 784         src_codeset = forced_charset
 785                       ? forced_charset :
 786                       procmime_mimeinfo_get_parameter(mimeinfo, "charset");
 787
 788         /* use supersets transparently when possible */
 789         if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_ISO_8859_1))
 790                 src_codeset = CS_WINDOWS_1252;
 791         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_GBK))
 792                 src_codeset = CS_GB18030;
 793         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GBK))
 794                 src_codeset = CS_GB18030;
 795         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GB2312))
 796                 src_codeset = CS_GB18030;
 797         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_VIET_VPS))
 798                 src_codeset = CS_WINDOWS_874;
 799
 800         if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "html")) {
 801                 SC_HTMLParser *parser;
 802                 CodeConverter *conv;
 803
 804                 conv = conv_code_converter_new(src_codeset);
 805                 parser = sc_html_parser_new(tmpfp, conv);
 806                 while ((str = sc_html_parse(parser)) != NULL) {
 807                         if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
 808                                 break;
 809                 }
 810                 sc_html_parser_destroy(parser);
 811                 conv_code_converter_destroy(conv);
 812         } else if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "enriched")) {
 813                 ERTFParser *parser;
 814                 CodeConverter *conv;
 815
 816                 conv = conv_code_converter_new(src_codeset);
 817                 parser = ertf_parser_new(tmpfp, conv);
 818                 while ((str = ertf_parse(parser)) != NULL) {
 819                         if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
 820                                 break;
 821                 }
 822                 ertf_parser_destroy(parser);
 823                 conv_code_converter_destroy(conv);
 824         } else if (mimeinfo->type == MIMETYPE_TEXT && mimeinfo->disposition != DISPOSITIONTYPE_ATTACHMENT) {
 825                 while (SC_FGETS(buf, sizeof(buf), tmpfp) != NULL) {
 826                         str = conv_codeset_strdup(buf, src_codeset, CS_UTF_8);
 827                         if (str) {
 828                                 if ((scan_ret = scan_callback(str, cb_data)) == TRUE) {
 829                                         g_free(str);
 830                                         break;
 831                                 }
 832                                 g_free(str);
 833                         } else {
 834                                 conv_fail = TRUE;
 835                                 if ((scan_ret = scan_callback(buf, cb_data)) == TRUE)
 836                                         break;
 837                         }
 838                 }
 839         }
 840
 841         if (conv_fail)
 842                 g_warning("procmime_get_text_content(): Code conversion failed.");
 843
 844         procmime_fclose(tmpfp);
 845         claws_unlink(tmpfile);
 846         g_free(tmpfile);
 847
 848         return scan_ret;
 849 }
 850
 851 static gboolean scan_fputs_cb(const gchar *str, gpointer fp)
 852 {
 853         if (SC_FPUTS(str, (FILE *)fp) == EOF)
 854                 return TRUE;
 855
 856         return FALSE;
 857 }
 858
 859 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
 860 {
 861         FILE *outfp;
 862         gboolean err;
 863
 864         if ((outfp = my_tmpfile()) == NULL) {
 865                 perror("my_tmpfile");
 866                 return NULL;
 867         }
 868 #ifdef HAVE_FGETS_UNLOCKED
 869         flockfile(outfp);
 870 #endif
 871
 872         err = procmime_scan_text_content(mimeinfo, scan_fputs_cb, outfp);
 873
 874         rewind(outfp);
 875         if (err == TRUE) {
 876                 procmime_fclose(outfp);
 877                 return NULL;
 878         }
 879 #ifdef HAVE_FGETS_UNLOCKED
 880         funlockfile(outfp);
 881 #endif
 882         return outfp;
 883
 884 }
 885
 886 FILE *procmime_get_binary_content(MimeInfo *mimeinfo)
 887 {
 888         FILE *outfp;
 889         gchar *tmpfile;
 890
 891         cm_return_val_if_fail(mimeinfo != NULL, NULL);
 892
 893         if (!procmime_decode_content(mimeinfo))
 894                 return NULL;
 895
 896         tmpfile = procmime_get_tmp_file_name(mimeinfo);
 897         if (tmpfile == NULL)
 898                 return NULL;
 899
 900         if (procmime_get_part(tmpfile, mimeinfo) < 0) {
 901                 g_free(tmpfile);
 902                 return NULL;
 903         }
 904
 905         outfp = procmime_fopen(tmpfile, "rb");
 906         if (outfp == NULL) {
 907                 g_unlink(tmpfile);
 908                 g_free(tmpfile);
 909                 return NULL;
 910         }
 911
 912         g_unlink(tmpfile);
 913         g_free(tmpfile);
 914
 915 #ifdef HAVE_FGETS_UNLOCKED
 916         funlockfile(outfp);
 917 #endif
 918         return outfp;
 919 }
 920
 921 /* search the first text part of (multipart) MIME message,
 922    decode, convert it and output to outfp. */
 923 FILE *procmime_get_first_text_content(MsgInfo *msginfo)
 924 {
 925         FILE *outfp = NULL;
 926         MimeInfo *mimeinfo, *partinfo;
 927         gboolean empty_ok = FALSE, short_scan = TRUE;
 928
 929         cm_return_val_if_fail(msginfo != NULL, NULL);
 930
 931         /* first we try to short-scan (for speed), refusing empty parts */
 932 scan_again:
 933         if (short_scan)
 934                 mimeinfo = procmime_scan_message_short(msginfo);
 935         else
 936                 mimeinfo = procmime_scan_message(msginfo);
 937         if (!mimeinfo) return NULL;
 938
 939         partinfo = mimeinfo;
 940         while (partinfo && (partinfo->type != MIMETYPE_TEXT ||
 941                (partinfo->length == 0 && !empty_ok))) {
 942                 partinfo = procmime_mimeinfo_next(partinfo);
 943         }
 944         if (partinfo)
 945                 outfp = procmime_get_text_content(partinfo);
 946         else if (!empty_ok && short_scan) {
 947                 /* if short scan didn't find a non-empty part, rescan
 948                  * fully for non-empty parts
 949                  */
 950                 short_scan = FALSE;
 951                 procmime_mimeinfo_free_all(&mimeinfo);
 952                 goto scan_again;
 953         } else if (!empty_ok && !short_scan) {
 954                 /* if full scan didn't find a non-empty part, rescan
 955                  * accepting empty parts
 956                  */
 957                 empty_ok = TRUE;
 958                 procmime_mimeinfo_free_all(&mimeinfo);
 959                 goto scan_again;
 960         }
 961         procmime_mimeinfo_free_all(&mimeinfo);
 962
 963         /* outfp already unlocked at this time */
 964         return outfp;
 965 }
 966
 967
 968 static gboolean find_encrypted_func(GNode *node, gpointer data)
 969 {
 970         MimeInfo *mimeinfo = (MimeInfo *) node->data;
 971         MimeInfo **encinfo = (MimeInfo **) data;
 972
 973         if (privacy_mimeinfo_is_encrypted(mimeinfo)) {
 974                 *encinfo = mimeinfo;
 975                 return TRUE;
 976         }
 977
 978         return FALSE;
 979 }
 980
 981 static MimeInfo *find_encrypted_part(MimeInfo *rootinfo)
 982 {
 983         MimeInfo *encinfo = NULL;
 984
 985         g_node_traverse(rootinfo->node, G_IN_ORDER, G_TRAVERSE_ALL, -1,
 986                 find_encrypted_func, &encinfo);
 987
 988         return encinfo;
 989 }
 990
 991 /* search the first encrypted text part of (multipart) MIME message,
 992    decode, convert it and output to outfp. */
 993 FILE *procmime_get_first_encrypted_text_content(MsgInfo *msginfo)
 994 {
 995         FILE *outfp = NULL;
 996         MimeInfo *mimeinfo, *partinfo, *encinfo;
 997
 998         cm_return_val_if_fail(msginfo != NULL, NULL);
 999
1000         mimeinfo = procmime_scan_message(msginfo);
1001         if (!mimeinfo) {
1002                 return NULL;
1003         }
1004
1005         partinfo = mimeinfo;
1006         if ((encinfo = find_encrypted_part(partinfo)) != NULL) {
1007                 debug_print("decrypting message part\n");
1008                 if (privacy_mimeinfo_decrypt(encinfo) < 0) {
1009                         alertpanel_error(_("Couldn't decrypt: %s"),
1010                                 privacy_get_error());
1011                         return NULL;
1012                 }
1013         }
1014         partinfo = mimeinfo;
1015         while (partinfo && partinfo->type != MIMETYPE_TEXT) {
1016                 partinfo = procmime_mimeinfo_next(partinfo);
1017                 if (privacy_mimeinfo_is_signed(partinfo))
1018                         procmsg_msginfo_set_flags(msginfo, 0, MSG_SIGNED);
1019         }
1020
1021         if (partinfo)
1022                 outfp = procmime_get_text_content(partinfo);
1023
1024         procmime_mimeinfo_free_all(&mimeinfo);
1025
1026         /* outfp already unlocked at this time */
1027         return outfp;
1028 }
1029
1030 gboolean procmime_msginfo_is_encrypted(MsgInfo *msginfo)
1031 {
1032         MimeInfo *mimeinfo, *partinfo;
1033         gboolean result = FALSE;
1034
1035         cm_return_val_if_fail(msginfo != NULL, FALSE);
1036
1037         mimeinfo = procmime_scan_message(msginfo);
1038         if (!mimeinfo) {
1039                 return FALSE;
1040         }
1041
1042         partinfo = mimeinfo;
1043         result = (find_encrypted_part(partinfo) != NULL);
1044         procmime_mimeinfo_free_all(&mimeinfo);
1045
1046         return result;
1047 }
1048
1049 gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
1050 {
1051         static guint32 id = 0;
1052         gchar *base;
1053         gchar *filename;
1054         gchar f_prefix[10];
1055
1056         cm_return_val_if_fail(mimeinfo != NULL, NULL);
1057
1058         g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++);
1059
1060         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
1061                 base = g_strdup("mimetmp.html");
1062         else {
1063                 const gchar *basetmp;
1064
1065                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
1066                 if (basetmp == NULL)
1067                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
1068                 if (basetmp == NULL)
1069                         basetmp = "mimetmp";
1070                 basetmp = g_path_get_basename(basetmp);
1071                 if (*basetmp == '\0')
1072                         basetmp = g_strdup("mimetmp");
1073                 base = conv_filename_from_utf8(basetmp);
1074                 g_free((gchar*)basetmp);
1075                 subst_for_shellsafe_filename(base);
1076         }
1077
1078         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
1079                                f_prefix, base, NULL);
1080
1081         g_free(base);
1082
1083         return filename;
1084 }
1085
1086 static GList *mime_type_list = NULL;
1087
1088 gchar *procmime_get_mime_type(const gchar *filename)
1089 {
1090         const gchar *p;
1091         gchar *ext = NULL;
1092         gchar *base;
1093 #ifndef G_OS_WIN32
1094         static GHashTable *mime_type_table = NULL;
1095         MimeType *mime_type;
1096
1097         if (!mime_type_table) {
1098                 mime_type_table = procmime_get_mime_type_table();
1099                 if (!mime_type_table) return NULL;
1100         }
1101 #endif
1102
1103         if (filename == NULL)
1104                 return NULL;
1105
1106         base = g_path_get_basename(filename);
1107         if ((p = strrchr(base, '.')) != NULL)
1108                 ext = g_utf8_strdown(p + 1, -1);
1109         else
1110                 ext = g_utf8_strdown(base, -1);
1111         g_free(base);
1112
1113 #ifndef G_OS_WIN32
1114         mime_type = g_hash_table_lookup(mime_type_table, ext);
1115
1116         if (mime_type) {
1117                 gchar *str;
1118                 str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
1119                                   NULL);
1120                 debug_print("got type %s for %s\n", str, ext);
1121                 g_free(ext);
1122                 return str;
1123         }
1124         g_free(ext);
1125         return NULL;
1126 #else
1127         gchar *str = get_content_type_from_registry_with_ext(ext);
1128
1129         g_free(ext);
1130         return str;
1131 #endif
1132 }
1133
1134 static guint procmime_str_hash(gconstpointer gptr)
1135 {
1136         guint hash_result = 0;
1137         const char *str;
1138
1139         for (str = gptr; str && *str; str++) {
1140                 if (isupper(*str)) hash_result += (*str + ' ');
1141                 else hash_result += *str;
1142         }
1143
1144         return hash_result;
1145 }
1146
1147 static gint procmime_str_equal(gconstpointer gptr1, gconstpointer gptr2)
1148 {
1149         const char *str1 = gptr1;
1150         const char *str2 = gptr2;
1151
1152         return !g_utf8_collate(str1, str2);
1153 }
1154
1155 static GHashTable *procmime_get_mime_type_table(void)
1156 {
1157         GHashTable *table = NULL;
1158         GList *cur;
1159         MimeType *mime_type;
1160         gchar **exts;
1161
1162         if (!mime_type_list) {
1163                 mime_type_list = procmime_get_mime_type_list();
1164                 if (!mime_type_list) return NULL;
1165         }
1166
1167         table = g_hash_table_new(procmime_str_hash, procmime_str_equal);
1168
1169         for (cur = mime_type_list; cur != NULL; cur = cur->next) {
1170                 gint i;
1171                 gchar *key;
1172
1173                 mime_type = (MimeType *)cur->data;
1174
1175                 if (!mime_type->extension) continue;
1176
1177                 exts = g_strsplit(mime_type->extension, " ", 16);
1178                 for (i = 0; exts[i] != NULL; i++) {
1179                         /* Don't overwrite previously inserted extension */
1180                         if (!g_hash_table_lookup(table, exts[i])) {
1181                                 key = g_strdup(exts[i]);
1182                                 g_hash_table_insert(table, key, mime_type);
1183                         }
1184                 }
1185                 g_strfreev(exts);
1186         }
1187
1188         return table;
1189 }
1190
1191 GList *procmime_get_mime_type_list(void)
1192 {
1193         GList *list = NULL;
1194         FILE *fp;
1195         gchar buf[BUFFSIZE];
1196         gchar *p;
1197         gchar *delim;
1198         MimeType *mime_type;
1199         gboolean fp_is_glob_file = TRUE;
1200
1201         if (mime_type_list)
1202                 return mime_type_list;
1203
1204 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__)
1205         if ((fp = procmime_fopen(DATAROOTDIR "/mime/globs", "rb")) == NULL)
1206 #else
1207         if ((fp = procmime_fopen("/usr/share/mime/globs", "rb")) == NULL)
1208 #endif
1209         {
1210                 fp_is_glob_file = FALSE;
1211                 if ((fp = procmime_fopen("/etc/mime.types", "rb")) == NULL) {
1212                         if ((fp = procmime_fopen(SYSCONFDIR "/mime.types", "rb"))
1213                                 == NULL) {
1214                                 FILE_OP_ERROR(SYSCONFDIR "/mime.types",
1215                                         "fopen");
1216                                 return NULL;
1217                         }
1218                 }
1219         }
1220
1221         while (SC_FGETS(buf, sizeof(buf), fp) != NULL) {
1222                 p = strchr(buf, '#');
1223                 if (p) *p = '\0';
1224                 g_strstrip(buf);
1225
1226                 p = buf;
1227
1228                 if (fp_is_glob_file) {
1229                         while (*p && !g_ascii_isspace(*p) && (*p!=':')) p++;
1230                 } else {
1231                         while (*p && !g_ascii_isspace(*p)) p++;
1232                 }
1233
1234                 if (*p) {
1235                         *p = '\0';
1236                         p++;
1237                 }
1238                 delim = strchr(buf, '/');
1239                 if (delim == NULL) continue;
1240                 *delim = '\0';
1241
1242                 mime_type = g_new(MimeType, 1);
1243                 mime_type->type = g_strdup(buf);
1244                 mime_type->sub_type = g_strdup(delim + 1);
1245
1246                 if (fp_is_glob_file) {
1247                         while (*p && (g_ascii_isspace(*p)||(*p=='*')||(*p=='.'))) p++;
1248                 } else {
1249                         while (*p && g_ascii_isspace(*p)) p++;
1250                 }
1251
1252                 if (*p)
1253                         mime_type->extension = g_utf8_strdown(p, -1);
1254                 else
1255                         mime_type->extension = NULL;
1256
1257                 list = g_list_append(list, mime_type);
1258         }
1259
1260         procmime_fclose(fp);
1261
1262         if (!list)
1263                 g_warning("Can't read mime.types");
1264
1265         return list;
1266 }
1267
1268 EncodingType procmime_get_encoding_for_charset(const gchar *charset)
1269 {
1270         if (!charset)
1271                 return ENC_8BIT;
1272         else if (!g_ascii_strncasecmp(charset, "ISO-2022-", 9) ||
1273                  !g_ascii_strcasecmp(charset, "US-ASCII"))
1274                 return ENC_7BIT;
1275         else if (!g_ascii_strcasecmp(charset, "ISO-8859-5") ||
1276                  !g_ascii_strncasecmp(charset, "KOI8-", 5) ||
1277                  !g_ascii_strcasecmp(charset, "X-MAC-CYRILLIC") ||
1278                  !g_ascii_strcasecmp(charset, "MAC-CYRILLIC") ||
1279                  !g_ascii_strcasecmp(charset, "Windows-1251"))
1280                 return ENC_8BIT;
1281         else if (!g_ascii_strncasecmp(charset, "ISO-8859-", 9))
1282                 return ENC_QUOTED_PRINTABLE;
1283         else if (!g_ascii_strncasecmp(charset, "UTF-8", 5))
1284                 return ENC_QUOTED_PRINTABLE;
1285         else
1286                 return ENC_8BIT;
1287 }
1288
1289 EncodingType procmime_get_encoding_for_text_file(const gchar *file, gboolean *has_binary)
1290 {
1291         FILE *fp;
1292         guchar buf[BUFFSIZE];
1293         size_t len;
1294         size_t octet_chars = 0;
1295         size_t total_len = 0;
1296         gfloat octet_percentage;
1297         gboolean force_b64 = FALSE;
1298
1299         if ((fp = procmime_fopen(file, "rb")) == NULL) {
1300                 FILE_OP_ERROR(file, "fopen");
1301                 return ENC_UNKNOWN;
1302         }
1303
1304         while ((len = SC_FREAD(buf, sizeof(guchar), sizeof(buf), fp)) > 0) {
1305                 guchar *p;
1306                 gint i;
1307
1308                 for (p = buf, i = 0; i < len; ++p, ++i) {
1309                         if (*p & 0x80)
1310                                 ++octet_chars;
1311                         if (*p == '\0') {
1312                                 force_b64 = TRUE;
1313                                 *has_binary = TRUE;
1314                         }
1315                 }
1316                 total_len += len;
1317         }
1318
1319         procmime_fclose(fp);
1320
1321         if (total_len > 0)
1322                 octet_percentage = (gfloat)octet_chars / (gfloat)total_len;
1323         else
1324                 octet_percentage = 0.0;
1325
1326         debug_print("procmime_get_encoding_for_text_file(): "
1327                     "8bit chars: %zd / %zd (%f%%)\n", octet_chars, total_len,
1328                     100.0 * octet_percentage);
1329
1330         if (octet_percentage > 0.20 || force_b64) {
1331                 debug_print("using BASE64\n");
1332                 return ENC_BASE64;
1333         } else if (octet_chars > 0) {
1334                 debug_print("using quoted-printable\n");
1335                 return ENC_QUOTED_PRINTABLE;
1336         } else {
1337                 debug_print("using 7bit\n");
1338                 return ENC_7BIT;
1339         }
1340 }
1341
1342 struct EncodingTable
1343 {
1344         gchar *str;
1345         EncodingType enc_type;
1346 };
1347
1348 struct EncodingTable encoding_table[] = {
1349         {"7bit", ENC_7BIT},
1350         {"8bit", ENC_8BIT},
1351         {"binary", ENC_BINARY},
1352         {"quoted-printable", ENC_QUOTED_PRINTABLE},
1353         {"base64", ENC_BASE64},
1354         {"x-uuencode", ENC_UNKNOWN},
1355         {NULL, ENC_UNKNOWN},
1356 };
1357
1358 const gchar *procmime_get_encoding_str(EncodingType encoding)
1359 {
1360         struct EncodingTable *enc_table;
1361
1362         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1363                 if (enc_table->enc_type == encoding)
1364                         return enc_table->str;
1365         }
1366         return NULL;
1367 }
1368
1369 /* --- NEW MIME STUFF --- */
1370 struct TypeTable
1371 {
1372         gchar *str;
1373         MimeMediaType type;
1374 };
1375
1376 static struct TypeTable mime_type_table[] = {
1377         {"text", MIMETYPE_TEXT},
1378         {"image", MIMETYPE_IMAGE},
1379         {"audio", MIMETYPE_AUDIO},
1380         {"video", MIMETYPE_VIDEO},
1381         {"application", MIMETYPE_APPLICATION},
1382         {"message", MIMETYPE_MESSAGE},
1383         {"multipart", MIMETYPE_MULTIPART},
1384         {NULL, 0},
1385 };
1386
1387 const gchar *procmime_get_media_type_str(MimeMediaType type)
1388 {
1389         struct TypeTable *type_table;
1390
1391         for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
1392                 if (type_table->type == type)
1393                         return type_table->str;
1394         }
1395         return NULL;
1396 }
1397
1398 MimeMediaType procmime_get_media_type(const gchar *str)
1399 {
1400         struct TypeTable *typetablearray;
1401
1402         for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++)
1403                 if (g_ascii_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0)
1404                         return typetablearray->type;
1405
1406         return MIMETYPE_UNKNOWN;
1407 }
1408
1409 /*!
1410  *\brief        Safe wrapper for content type string.
1411  *
1412  *\return       const gchar * Pointer to content type string.
1413  */
1414 gchar *procmime_get_content_type_str(MimeMediaType type,
1415                                            const char *subtype)
1416 {
1417         const gchar *type_str = NULL;
1418
1419         if (subtype == NULL || !(type_str = procmime_get_media_type_str(type)))
1420                 return g_strdup("unknown");
1421         return g_strdup_printf("%s/%s", type_str, subtype);
1422 }
1423
1424 static int procmime_parse_mimepart(MimeInfo *parent,
1425                              gchar *content_type,
1426                              gchar *content_encoding,
1427                              gchar *content_description,
1428                              gchar *content_id,
1429                              gchar *content_disposition,
1430                              gchar *content_location,
1431                              const gchar *original_msgid,
1432                              const gchar *disposition_notification_hdr,
1433                              const gchar *filename,
1434                              guint offset,
1435                              guint length,
1436                              gboolean short_scan);
1437
1438 static void procmime_parse_message_rfc822(MimeInfo *mimeinfo, gboolean short_scan)
1439 {
1440         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1441                                 {"Content-Transfer-Encoding:",
1442                                                    NULL, FALSE},
1443                                 {"Content-Description:",
1444                                                    NULL, TRUE},
1445                                 {"Content-ID:",
1446                                                    NULL, TRUE},
1447                                 {"Content-Disposition:",
1448                                                    NULL, TRUE},
1449                                 {"Content-Location:",
1450                                                    NULL, TRUE},
1451                                 {"MIME-Version:",
1452                                                    NULL, TRUE},
1453                                 {"Original-Message-ID:",
1454                                                    NULL, TRUE},
1455                                 {"Disposition:",
1456                                                    NULL, TRUE},
1457                                 {NULL,             NULL, FALSE}};
1458         guint content_start, i;
1459         FILE *fp;
1460         gchar *tmp;
1461         gint len = 0;
1462
1463         procmime_decode_content(mimeinfo);
1464
1465         fp = procmime_fopen(mimeinfo->data.filename, "rb");
1466         if (fp == NULL) {
1467                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1468                 return;
1469         }
1470         if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1471                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1472                 procmime_fclose(fp);
1473                 return;
1474         }
1475         procheader_get_header_fields(fp, hentry);
1476         if (hentry[0].body != NULL) {
1477                 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);
1478                 g_free(hentry[0].body);
1479                 hentry[0].body = tmp;
1480         }
1481         if (hentry[2].body != NULL) {
1482                 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);
1483                 g_free(hentry[2].body);
1484                 hentry[2].body = tmp;
1485         }
1486         if (hentry[4].body != NULL) {
1487                 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);
1488                 g_free(hentry[4].body);
1489                 hentry[4].body = tmp;
1490         }
1491         if (hentry[5].body != NULL) {
1492                 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);
1493                 g_free(hentry[5].body);
1494                 hentry[5].body = tmp;
1495         }
1496         if (hentry[7].body != NULL) {
1497                 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);
1498                 g_free(hentry[7].body);
1499                 hentry[7].body = tmp;
1500         }
1501         if (hentry[8].body != NULL) {
1502                 tmp = conv_unmime_header(hentry[8].body, NULL, FALSE);
1503                 g_free(hentry[8].body);
1504                 hentry[8].body = tmp;
1505         }
1506
1507         content_start = ftell(fp);
1508         procmime_fclose(fp);
1509
1510         len = mimeinfo->length - (content_start - mimeinfo->offset);
1511         if (len < 0)
1512                 len = 0;
1513         procmime_parse_mimepart(mimeinfo,
1514                                 hentry[0].body, hentry[1].body,
1515                                 hentry[2].body, hentry[3].body,
1516                                 hentry[4].body, hentry[5].body,
1517                                 hentry[7].body, hentry[8].body,
1518                                 mimeinfo->data.filename, content_start,
1519                                 len, short_scan);
1520
1521         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1522                 g_free(hentry[i].body);
1523                 hentry[i].body = NULL;
1524         }
1525 }
1526
1527 static void procmime_parse_disposition_notification(MimeInfo *mimeinfo,
1528                 const gchar *original_msgid, const gchar *disposition_notification_hdr,
1529                 gboolean short_scan)
1530 {
1531         HeaderEntry hentry[] = {{"Original-Message-ID:",  NULL, TRUE},
1532                                 {"Disposition:",          NULL, TRUE},
1533                                 {NULL,                    NULL, FALSE}};
1534         guint i;
1535         FILE *fp;
1536         gchar *orig_msg_id = NULL;
1537         gchar *disp = NULL;
1538
1539         procmime_decode_content(mimeinfo);
1540
1541         debug_print("parse disposition notification\n");
1542         fp = procmime_fopen(mimeinfo->data.filename, "rb");
1543         if (fp == NULL) {
1544                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1545                 return;
1546         }
1547         if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1548                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1549                 procmime_fclose(fp);
1550                 return;
1551         }
1552
1553         if (original_msgid && disposition_notification_hdr) {
1554                 hentry[0].body = g_strdup(original_msgid);
1555                 hentry[1].body = g_strdup(disposition_notification_hdr);
1556         } else {
1557                 procheader_get_header_fields(fp, hentry);
1558         }
1559
1560         procmime_fclose(fp);
1561
1562         if (!hentry[0].body || !hentry[1].body) {
1563                 debug_print("MsgId %s, Disp %s\n",
1564                         hentry[0].body ? hentry[0].body:"(nil)",
1565                         hentry[1].body ? hentry[1].body:"(nil)");
1566                 goto bail;
1567         }
1568
1569         orig_msg_id = g_strdup(hentry[0].body);
1570         disp = g_strdup(hentry[1].body);
1571
1572         extract_parenthesis(orig_msg_id, '<', '>');
1573         remove_space(orig_msg_id);
1574
1575         if (strstr(disp, "displayed")) {
1576                 /* find sent message, if possible */
1577                 MsgInfo *info = NULL;
1578                 GList *flist;
1579                 debug_print("%s has been displayed.\n", orig_msg_id);
1580                 for (flist = folder_get_list(); flist != NULL; flist = g_list_next(flist)) {
1581                         FolderItem *outbox = ((Folder *)(flist->data))->outbox;
1582                         if (!outbox) {
1583                                 debug_print("skipping folder with no outbox...\n");
1584                                 continue;
1585                         }
1586                         info = folder_item_get_msginfo_by_msgid(outbox, orig_msg_id);
1587                         debug_print("%s %s in %s\n", info?"found":"didn't find", orig_msg_id, outbox->path);
1588                         if (info) {
1589                                 procmsg_msginfo_set_flags(info, MSG_RETRCPT_GOT, 0);
1590                                 procmsg_msginfo_free(&info);
1591                         }
1592                 }
1593         }
1594         g_free(orig_msg_id);
1595         g_free(disp);
1596 bail:
1597         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1598                 g_free(hentry[i].body);
1599                 hentry[i].body = NULL;
1600         }
1601 }
1602
1603 #define GET_HEADERS() {                                         \
1604         procheader_get_header_fields(fp, hentry);               \
1605         if (hentry[0].body != NULL) {                           \
1606                 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);  \
1607                 g_free(hentry[0].body);                         \
1608                 hentry[0].body = tmp;                           \
1609         }                                                       \
1610         if (hentry[2].body != NULL) {                           \
1611                 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);  \
1612                 g_free(hentry[2].body);                         \
1613                 hentry[2].body = tmp;                           \
1614         }                                                       \
1615         if (hentry[4].body != NULL) {                           \
1616                 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);  \
1617                 g_free(hentry[4].body);                         \
1618                 hentry[4].body = tmp;                           \
1619         }                                                       \
1620         if (hentry[5].body != NULL) {                           \
1621                 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);  \
1622                 g_free(hentry[5].body);                         \
1623                 hentry[5].body = tmp;                           \
1624         }                                                       \
1625         if (hentry[6].body != NULL) {                           \
1626                 tmp = conv_unmime_header(hentry[6].body, NULL, FALSE);  \
1627                 g_free(hentry[6].body);                         \
1628                 hentry[6].body = tmp;                           \
1629         }                                                       \
1630         if (hentry[7].body != NULL) {                           \
1631                 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);  \
1632                 g_free(hentry[7].body);                         \
1633                 hentry[7].body = tmp;                           \
1634         }                                                       \
1635 }
1636
1637 static void procmime_parse_multipart(MimeInfo *mimeinfo, gboolean short_scan)
1638 {
1639         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1640                                 {"Content-Transfer-Encoding:",
1641                                                    NULL, FALSE},
1642                                 {"Content-Description:",
1643                                                    NULL, TRUE},
1644                                 {"Content-ID:",
1645                                                    NULL, TRUE},
1646                                 {"Content-Disposition:",
1647                                                    NULL, TRUE},
1648                                 {"Content-Location:",
1649                                                    NULL, TRUE},
1650                                 {"Original-Message-ID:",
1651                                                    NULL, TRUE},
1652                                 {"Disposition:",
1653                                                    NULL, TRUE},
1654                                 {NULL,             NULL, FALSE}};
1655         gchar *tmp;
1656         gchar *boundary;
1657         gint boundary_len = 0, lastoffset = -1, i;
1658         gchar buf[BUFFSIZE];
1659         FILE *fp;
1660         int result = 0;
1661         gboolean start_found = FALSE;
1662         gboolean end_found = FALSE;
1663
1664         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1665         if (!boundary)
1666                 return;
1667         boundary_len = strlen(boundary);
1668
1669         procmime_decode_content(mimeinfo);
1670
1671         fp = procmime_fopen(mimeinfo->data.filename, "rb");
1672         if (fp == NULL) {
1673                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1674                 return;
1675         }
1676
1677         if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1678                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1679                 procmime_fclose(fp);
1680                 return;
1681         }
1682
1683         while (SC_FGETS(buf, sizeof(buf), fp) != NULL && result == 0) {
1684                 if (ftell(fp) - 1 > (mimeinfo->offset + mimeinfo->length))
1685                         break;
1686
1687                 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1688                         start_found = TRUE;
1689
1690                         if (lastoffset != -1) {
1691                                 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1692                                 if (len < 0)
1693                                         len = 0;
1694                                 result = procmime_parse_mimepart(mimeinfo,
1695                                                         hentry[0].body, hentry[1].body,
1696                                                         hentry[2].body, hentry[3].body,
1697                                                         hentry[4].body, hentry[5].body,
1698                                                         hentry[6].body, hentry[7].body,
1699                                                         mimeinfo->data.filename, lastoffset,
1700                                                         len, short_scan);
1701                                 if (result == 1 && short_scan)
1702                                         break;
1703
1704                         }
1705
1706                         if (buf[2 + boundary_len]     == '-' &&
1707                             buf[2 + boundary_len + 1] == '-') {
1708                                 end_found = TRUE;
1709                                 break;
1710                         }
1711                         for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1712                                 g_free(hentry[i].body);
1713                                 hentry[i].body = NULL;
1714                         }
1715                         GET_HEADERS();
1716                         lastoffset = ftell(fp);
1717                 }
1718         }
1719
1720         if (start_found && !end_found && lastoffset != -1) {
1721                 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1722
1723                 if (len >= 0) {
1724                         result = procmime_parse_mimepart(mimeinfo,
1725                                         hentry[0].body, hentry[1].body,
1726                                         hentry[2].body, hentry[3].body,
1727                                         hentry[4].body, hentry[5].body,
1728                                         hentry[6].body, hentry[7].body,
1729                                         mimeinfo->data.filename, lastoffset,
1730                                         len, short_scan);
1731                 }
1732                 mimeinfo->broken = TRUE;
1733         }
1734
1735         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1736                 g_free(hentry[i].body);
1737                 hentry[i].body = NULL;
1738         }
1739         procmime_fclose(fp);
1740 }
1741
1742 static void parse_parameters(const gchar *parameters, GHashTable *table)
1743 {
1744         gchar *params, *param, *next;
1745         GSList *convlist = NULL, *concatlist = NULL, *cur;
1746
1747         params = g_strdup(parameters);
1748         param = params;
1749         next = params;
1750         for (; next != NULL; param = next) {
1751                 gchar *attribute, *value, *tmp, *down_attr, *orig_down_attr;
1752                 gint len;
1753                 gboolean convert = FALSE;
1754
1755                 next = strchr_with_skip_quote(param, '"', ';');
1756                 if (next != NULL) {
1757                         next[0] = '\0';
1758                         next++;
1759                 }
1760
1761                 g_strstrip(param);
1762
1763                 attribute = param;
1764                 value = strchr(attribute, '=');
1765                 if (value == NULL)
1766                         continue;
1767
1768                 value[0] = '\0';
1769                 value++;
1770                 while (value[0] != '\0' && value[0] == ' ')
1771                         value++;
1772
1773                 down_attr = g_utf8_strdown(attribute, -1);
1774                 orig_down_attr = down_attr;
1775
1776                 len = down_attr ? strlen(down_attr):0;
1777                 if (len > 0 && down_attr[len - 1] == '*') {
1778                         gchar *srcpos, *dstpos, *endpos;
1779
1780                         convert = TRUE;
1781                         down_attr[len - 1] = '\0';
1782
1783                         srcpos = value;
1784                         dstpos = value;
1785                         endpos = value + strlen(value);
1786                         while (srcpos < endpos) {
1787                                 if (*srcpos != '%')
1788                                         *dstpos = *srcpos;
1789                                 else {
1790                                         guchar dstvalue;
1791
1792                                         if (!get_hex_value(&dstvalue, srcpos[1], srcpos[2]))
1793                                                 *dstpos = '?';
1794                                         else
1795                                                 *dstpos = dstvalue;
1796                                         srcpos += 2;
1797                                 }
1798                                 srcpos++;
1799                                 dstpos++;
1800                         }
1801                         *dstpos = '\0';
1802                         if (value[0] == '"')
1803                                 extract_quote(value, '"');
1804                 } else {
1805                         if (value[0] == '"')
1806                                 extract_quote(value, '"');
1807                         else if ((tmp = strchr(value, ' ')) != NULL)
1808                                 *tmp = '\0';
1809                 }
1810
1811                 if (down_attr) {
1812                         while (down_attr[0] == ' ')
1813                                 down_attr++;
1814                         while (down_attr[strlen(down_attr)-1] == ' ')
1815                                 down_attr[strlen(down_attr)-1] = '\0';
1816                 }
1817
1818                 while (value[0] != '\0' && value[0] == ' ')
1819                         value++;
1820                 while (value[strlen(value)-1] == ' ')
1821                         value[strlen(value)-1] = '\0';
1822
1823                 if (down_attr && strrchr(down_attr, '*') != NULL) {
1824                         gchar *tmpattr;
1825
1826                         tmpattr = g_strdup(down_attr);
1827                         tmp = strrchr(tmpattr, '*');
1828                         tmp[0] = '\0';
1829
1830                         if ((tmp[1] == '0') && (tmp[2] == '\0') &&
1831                             (g_slist_find_custom(concatlist, down_attr, (GCompareFunc)g_strcmp0) == NULL))
1832                                 concatlist = g_slist_prepend(concatlist, g_strdup(tmpattr));
1833
1834                         if (convert && (g_slist_find_custom(convlist, tmpattr, (GCompareFunc)g_strcmp0) == NULL))
1835                                 convlist = g_slist_prepend(convlist, g_strdup(tmpattr));
1836
1837                         g_free(tmpattr);
1838                 } else if (convert) {
1839                         if (g_slist_find_custom(convlist, down_attr, (GCompareFunc)g_strcmp0) == NULL)
1840                                 convlist = g_slist_prepend(convlist, g_strdup(down_attr));
1841                 }
1842
1843                 if (g_hash_table_lookup(table, down_attr) == NULL)
1844                         g_hash_table_insert(table, g_strdup(down_attr), g_strdup(value));
1845                 g_free(orig_down_attr);
1846         }
1847
1848         for (cur = concatlist; cur != NULL; cur = g_slist_next(cur)) {
1849                 gchar *attribute, *attrwnum, *partvalue;
1850                 gint n = 0;
1851                 GString *value;
1852
1853                 attribute = (gchar *) cur->data;
1854                 value = g_string_sized_new(64);
1855
1856                 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1857                 while ((partvalue = g_hash_table_lookup(table, attrwnum)) != NULL) {
1858                         g_string_append(value, partvalue);
1859
1860                         g_hash_table_remove(table, attrwnum);
1861                         g_free(attrwnum);
1862                         n++;
1863                         attrwnum = g_strdup_printf("%s*%d", attribute, n);
1864                 }
1865                 g_free(attrwnum);
1866
1867                 g_hash_table_insert(table, g_strdup(attribute), g_strdup(value->str));
1868                 g_string_free(value, TRUE);
1869         }
1870         slist_free_strings_full(concatlist);
1871
1872         for (cur = convlist; cur != NULL; cur = g_slist_next(cur)) {
1873                 gchar *attribute, *key, *value;
1874                 gchar *charset, *lang, *oldvalue, *newvalue;
1875
1876                 attribute = (gchar *) cur->data;
1877                 if (!g_hash_table_lookup_extended(
1878                         table, attribute, (gpointer *)(gchar *) &key, (gpointer *)(gchar *) &value))
1879                         continue;
1880
1881                 charset = value;
1882                 if (charset == NULL)
1883                         continue;
1884                 lang = strchr(charset, '\'');
1885                 if (lang == NULL)
1886                         continue;
1887                 lang[0] = '\0';
1888                 lang++;
1889                 oldvalue = strchr(lang, '\'');
1890                 if (oldvalue == NULL)
1891                         continue;
1892                 oldvalue[0] = '\0';
1893                 oldvalue++;
1894
1895                 newvalue = conv_codeset_strdup(oldvalue, charset, CS_UTF_8);
1896
1897                 g_hash_table_remove(table, attribute);
1898                 g_free(key);
1899                 g_free(value);
1900
1901                 g_hash_table_insert(table, g_strdup(attribute), newvalue);
1902         }
1903         slist_free_strings_full(convlist);
1904
1905         g_free(params);
1906 }
1907
1908 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1909 {
1910         cm_return_if_fail(content_type != NULL);
1911         cm_return_if_fail(mimeinfo != NULL);
1912
1913         /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1914          * if it's not available we use the default Content-Type */
1915         if ((content_type[0] == '\0') || (strchr(content_type, '/') == NULL)) {
1916                 mimeinfo->type = MIMETYPE_TEXT;
1917                 mimeinfo->subtype = g_strdup("plain");
1918                 if (g_hash_table_lookup(mimeinfo->typeparameters,
1919                                        "charset") == NULL) {
1920                         g_hash_table_insert(mimeinfo->typeparameters,
1921                                     g_strdup("charset"),
1922                                     g_strdup(
1923                                         conv_get_locale_charset_str_no_utf8()));
1924                 }
1925         } else {
1926                 gchar *type, *subtype, *params;
1927
1928                 type = g_strdup(content_type);
1929                 subtype = strchr(type, '/') + 1;
1930                 *(subtype - 1) = '\0';
1931                 if ((params = strchr(subtype, ';')) != NULL) {
1932                         params[0] = '\0';
1933                         params++;
1934                 }
1935
1936                 mimeinfo->type = procmime_get_media_type(type);
1937                 mimeinfo->subtype = g_strstrip(g_strdup(subtype));
1938
1939                 /* Get mimeinfo->typeparameters */
1940                 if (params != NULL)
1941                         parse_parameters(params, mimeinfo->typeparameters);
1942
1943                 g_free(type);
1944         }
1945 }
1946
1947 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1948 {
1949         gchar *tmp, *params;
1950
1951         cm_return_if_fail(content_disposition != NULL);
1952         cm_return_if_fail(mimeinfo != NULL);
1953
1954         tmp = g_strdup(content_disposition);
1955         if ((params = strchr(tmp, ';')) != NULL) {
1956                 params[0] = '\0';
1957                 params++;
1958         }
1959         g_strstrip(tmp);
1960
1961         if (!g_ascii_strcasecmp(tmp, "inline"))
1962                 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1963         else if (!g_ascii_strcasecmp(tmp, "attachment"))
1964                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1965         else
1966                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1967
1968         if (params != NULL)
1969                 parse_parameters(params, mimeinfo->dispositionparameters);
1970
1971         g_free(tmp);
1972 }
1973
1974
1975 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1976 {
1977         struct EncodingTable *enc_table;
1978
1979         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1980                 if (g_ascii_strcasecmp(enc_table->str, content_encoding) == 0) {
1981                         mimeinfo->encoding_type = enc_table->enc_type;
1982                         return;
1983                 }
1984         }
1985         mimeinfo->encoding_type = ENC_UNKNOWN;
1986         return;
1987 }
1988
1989 static GSList *registered_parsers = NULL;
1990
1991 static MimeParser *procmime_get_mimeparser_for_type(MimeMediaType type, const gchar *sub_type)
1992 {
1993         GSList *cur;
1994         for (cur = registered_parsers; cur; cur = cur->next) {
1995                 MimeParser *parser = (MimeParser *)cur->data;
1996                 if (parser->type == type && !strcmp2(parser->sub_type, sub_type))
1997                         return parser;
1998         }
1999         return NULL;
2000 }
2001
2002 void procmime_mimeparser_register(MimeParser *parser)
2003 {
2004         if (!procmime_get_mimeparser_for_type(parser->type, parser->sub_type))
2005                 registered_parsers = g_slist_append(registered_parsers, parser);
2006 }
2007
2008
2009 void procmime_mimeparser_unregister(MimeParser *parser)
2010 {
2011         registered_parsers = g_slist_remove(registered_parsers, parser);
2012 }
2013
2014 static gboolean procmime_mimeparser_parse(MimeParser *parser, MimeInfo *mimeinfo)
2015 {
2016         cm_return_val_if_fail(parser->parse != NULL, FALSE);
2017         return parser->parse(parser, mimeinfo);
2018 }
2019
2020 static int procmime_parse_mimepart(MimeInfo *parent,
2021                              gchar *content_type,
2022                              gchar *content_encoding,
2023                              gchar *content_description,
2024                              gchar *content_id,
2025                              gchar *content_disposition,
2026                              gchar *content_location,
2027                              const gchar *original_msgid,
2028                              const gchar *disposition_notification_hdr,
2029                              const gchar *filename,
2030                              guint offset,
2031                              guint length,
2032                              gboolean short_scan)
2033 {
2034         MimeInfo *mimeinfo;
2035         MimeParser *parser = NULL;
2036         gboolean parsed = FALSE;
2037         int result = 0;
2038
2039         /* Create MimeInfo */
2040         mimeinfo = procmime_mimeinfo_new();
2041         mimeinfo->content = MIMECONTENT_FILE;
2042
2043         if (parent != NULL) {
2044                 if (g_node_depth(parent->node) > 32) {
2045                         /* 32 is an arbitrary value
2046                          * this avoids DOSsing ourselves
2047                          * with enormous messages
2048                          */
2049                         procmime_mimeinfo_free_all(&mimeinfo);
2050                         return -1;
2051                 }
2052                 g_node_append(parent->node, mimeinfo->node);
2053         }
2054         mimeinfo->data.filename = g_strdup(filename);
2055         mimeinfo->offset = offset;
2056         mimeinfo->length = length;
2057
2058         if (content_type != NULL) {
2059                 g_strchomp(content_type);
2060                 procmime_parse_content_type(content_type, mimeinfo);
2061         } else {
2062                 mimeinfo->type = MIMETYPE_TEXT;
2063                 mimeinfo->subtype = g_strdup("plain");
2064                 if (g_hash_table_lookup(mimeinfo->typeparameters,
2065                                        "charset") == NULL) {
2066                         g_hash_table_insert(mimeinfo->typeparameters,
2067                                     g_strdup("charset"),
2068                                     g_strdup(
2069                                         conv_get_locale_charset_str_no_utf8()));
2070                 }
2071         }
2072
2073         if (content_encoding != NULL) {
2074                 g_strchomp(content_encoding);
2075                 procmime_parse_content_encoding(content_encoding, mimeinfo);
2076         } else {
2077                 mimeinfo->encoding_type = ENC_UNKNOWN;
2078         }
2079
2080         if (content_description != NULL)
2081                 mimeinfo->description = g_strdup(content_description);
2082         else
2083                 mimeinfo->description = NULL;
2084
2085         if (content_id != NULL)
2086                 mimeinfo->id = g_strdup(content_id);
2087         else
2088                 mimeinfo->id = NULL;
2089
2090         if (content_location != NULL)
2091                 mimeinfo->location = g_strdup(content_location);
2092         else
2093                 mimeinfo->location = NULL;
2094
2095         if (content_disposition != NULL) {
2096                 g_strchomp(content_disposition);
2097                 procmime_parse_content_disposition(content_disposition, mimeinfo);
2098         } else
2099                 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
2100
2101         /* Call parser for mime type */
2102         if ((parser = procmime_get_mimeparser_for_type(mimeinfo->type, mimeinfo->subtype)) != NULL) {
2103                 parsed = procmime_mimeparser_parse(parser, mimeinfo);
2104         }
2105         if (!parsed) {
2106                 switch (mimeinfo->type) {
2107                 case MIMETYPE_TEXT:
2108                         if (g_ascii_strcasecmp(mimeinfo->subtype, "plain") == 0 && short_scan) {
2109                                 return 1;
2110                         }
2111                         break;
2112
2113                 case MIMETYPE_MESSAGE:
2114                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2115                                 procmime_parse_message_rfc822(mimeinfo, short_scan);
2116                         }
2117                         if (g_ascii_strcasecmp(mimeinfo->subtype, "disposition-notification") == 0) {
2118                                 procmime_parse_disposition_notification(mimeinfo,
2119                                         original_msgid, disposition_notification_hdr, short_scan);
2120                         }
2121                         break;
2122
2123                 case MIMETYPE_MULTIPART:
2124                         procmime_parse_multipart(mimeinfo, short_scan);
2125                         break;
2126
2127                 case MIMETYPE_APPLICATION:
2128                         if (g_ascii_strcasecmp(mimeinfo->subtype, "octet-stream") == 0
2129                         && original_msgid && *original_msgid
2130                         && disposition_notification_hdr && *disposition_notification_hdr) {
2131                                 procmime_parse_disposition_notification(mimeinfo,
2132                                         original_msgid, disposition_notification_hdr, short_scan);
2133                         }
2134                         break;
2135                 default:
2136                         break;
2137                 }
2138         }
2139
2140         return result;
2141 }
2142
2143 static gchar *typenames[] = {
2144     "text",
2145     "image",
2146     "audio",
2147     "video",
2148     "application",
2149     "message",
2150     "multipart",
2151     "unknown",
2152 };
2153
2154 static gboolean output_func(GNode *node, gpointer data)
2155 {
2156         guint i, depth;
2157         MimeInfo *mimeinfo = (MimeInfo *) node->data;
2158
2159         depth = g_node_depth(node);
2160         for (i = 0; i < depth; i++)
2161                 g_print("    ");
2162         g_print("%s/%s (offset:%d length:%d encoding: %d)\n", typenames[mimeinfo->type], mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
2163
2164         return FALSE;
2165 }
2166
2167 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
2168 {
2169         g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
2170 }
2171
2172 static MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset, gboolean short_scan)
2173 {
2174         MimeInfo *mimeinfo;
2175         GStatBuf buf;
2176
2177         if (g_stat(filename, &buf) < 0) {
2178                 FILE_OP_ERROR(filename, "stat");
2179                 return NULL;
2180         }
2181
2182         mimeinfo = procmime_mimeinfo_new();
2183         mimeinfo->content = MIMECONTENT_FILE;
2184         mimeinfo->encoding_type = ENC_UNKNOWN;
2185         mimeinfo->type = MIMETYPE_MESSAGE;
2186         mimeinfo->subtype = g_strdup("rfc822");
2187         mimeinfo->data.filename = g_strdup(filename);
2188         mimeinfo->offset = offset;
2189         mimeinfo->length = buf.st_size - offset;
2190
2191         procmime_parse_message_rfc822(mimeinfo, short_scan);
2192         if (debug_get_mode())
2193                 output_mime_structure(mimeinfo, 0);
2194
2195         return mimeinfo;
2196 }
2197
2198 static MimeInfo *procmime_scan_file_full(const gchar *filename, gboolean short_scan)
2199 {
2200         MimeInfo *mimeinfo;
2201
2202         cm_return_val_if_fail(filename != NULL, NULL);
2203
2204         mimeinfo = procmime_scan_file_with_offset(filename, 0, short_scan);
2205
2206         return mimeinfo;
2207 }
2208
2209 MimeInfo *procmime_scan_file(const gchar *filename)
2210 {
2211         return procmime_scan_file_full(filename, FALSE);
2212 }
2213
2214 static MimeInfo *procmime_scan_file_short(const gchar *filename)
2215 {
2216         return procmime_scan_file_full(filename, TRUE);
2217 }
2218
2219 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan)
2220 {
2221         FILE *fp;
2222         MimeInfo *mimeinfo;
2223         gchar buf[BUFFSIZE];
2224         gint offset = 0;
2225
2226         cm_return_val_if_fail(filename != NULL, NULL);
2227
2228         /* Open file */
2229         if ((fp = procmime_fopen(filename, "rb")) == NULL)
2230                 return NULL;
2231         /* Skip queue header */
2232         while (SC_FGETS(buf, sizeof(buf), fp) != NULL) {
2233                 /* new way */
2234                 if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
2235                         strlen("X-Claws-End-Special-Headers:"))) ||
2236                    (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
2237                         strlen("X-Sylpheed-End-Special-Headers:"))))
2238                         break;
2239                 /* old way */
2240                 if (buf[0] == '\r' || buf[0] == '\n') break;
2241                 /* from other mailers */
2242                 if (!strncmp(buf, "Date: ", 6)
2243                 ||  !strncmp(buf, "To: ", 4)
2244                 ||  !strncmp(buf, "From: ", 6)
2245                 ||  !strncmp(buf, "Subject: ", 9)) {
2246                         rewind(fp);
2247                         break;
2248                 }
2249         }
2250         offset = ftell(fp);
2251         procmime_fclose(fp);
2252
2253         mimeinfo = procmime_scan_file_with_offset(filename, offset, short_scan);
2254
2255         return mimeinfo;
2256 }
2257
2258 MimeInfo *procmime_scan_queue_file(const gchar *filename)
2259 {
2260         return procmime_scan_queue_file_full(filename, FALSE);
2261 }
2262
2263 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename)
2264 {
2265         return procmime_scan_queue_file_full(filename, TRUE);
2266 }
2267
2268 typedef enum {
2269     ENC_AS_TOKEN,
2270     ENC_AS_QUOTED_STRING,
2271     ENC_AS_EXTENDED,
2272     ENC_AS_ENCWORD
2273 } EncodeAs;
2274
2275 typedef struct _ParametersData {
2276         FILE *fp;
2277         guint len;
2278         gint error;
2279 } ParametersData;
2280
2281 static void write_parameters(gpointer key, gpointer value, gpointer user_data)
2282 {
2283         gchar *param = key;
2284         gchar *val = value, *valpos, *tmp;
2285         ParametersData *pdata = (ParametersData *)user_data;
2286         GString *buf = g_string_new("");
2287         gint len;
2288
2289         EncodeAs encas = ENC_AS_TOKEN;
2290
2291         for (valpos = val; *valpos != 0; valpos++) {
2292                 if (!IS_ASCII(*valpos)) {
2293                         encas = ENC_AS_ENCWORD;
2294                         break;
2295                 }
2296
2297                 /* CTLs */
2298                 if (((*valpos >= 0) && (*valpos < 037)) || (*valpos == 0177)) {
2299                         encas = ENC_AS_QUOTED_STRING;
2300                         continue;
2301                 }
2302
2303                 /* tspecials + SPACE */
2304                 switch (*valpos) {
2305                 case ' ':
2306                 case '(':
2307                 case ')':
2308                 case '<':
2309                 case '>':
2310                 case '@':
2311                 case ',':
2312                 case ';':
2313                 case ':':
2314                 case '\\':
2315                 case '"':
2316                 case '/':
2317                 case '[':
2318                 case ']':
2319                 case '?':
2320                 case '=':
2321                         encas = ENC_AS_QUOTED_STRING;
2322                         continue;
2323                 }
2324         }
2325
2326         switch (encas) {
2327         case ENC_AS_TOKEN:
2328                 g_string_append_printf(buf, "%s=%s", param, val);
2329                 break;
2330
2331         case ENC_AS_QUOTED_STRING:
2332                 g_string_append_printf(buf, "%s=\"%s\"", param, val);
2333                 break;
2334
2335 #if 0 /* we don't use that for now */
2336         case ENC_AS_EXTENDED:
2337                 if (!g_utf8_validate(val, -1, NULL))
2338                         g_string_append_printf(buf, "%s*=%s''", param,
2339                                 conv_get_locale_charset_str());
2340                 else
2341                         g_string_append_printf(buf, "%s*=%s''", param,
2342                                 CS_INTERNAL);
2343                 for (valpos = val; *valpos != '\0'; valpos++) {
2344                         if (IS_ASCII(*valpos) && isalnum(*valpos)) {
2345                                 g_string_append_printf(buf, "%c", *valpos);
2346                         } else {
2347                                 gchar hexstr[3] = "XX";
2348                                 get_hex_str(hexstr, *valpos);
2349                                 g_string_append_printf(buf, "%%%s", hexstr);
2350                         }
2351                 }
2352                 break;
2353 #else
2354         case ENC_AS_EXTENDED:
2355                 debug_print("Unhandled ENC_AS_EXTENDED.\n");
2356                 break;
2357 #endif
2358         case ENC_AS_ENCWORD:
2359                 len = MAX(strlen(val)*6, 512);
2360                 tmp = g_malloc(len+1);
2361                 codeconv_set_strict(TRUE);
2362                 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2363                         prefs_common.outgoing_charset);
2364                 codeconv_set_strict(FALSE);
2365                 if (!tmp || !*tmp) {
2366                         codeconv_set_strict(TRUE);
2367                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2368                                 conv_get_outgoing_charset_str());
2369                         codeconv_set_strict(FALSE);
2370                 }
2371                 if (!tmp || !*tmp) {
2372                         codeconv_set_strict(TRUE);
2373                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2374                                 CS_UTF_8);
2375                         codeconv_set_strict(FALSE);
2376                 }
2377                 if (!tmp || !*tmp) {
2378                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2379                                 CS_UTF_8);
2380                 }
2381                 g_string_append_printf(buf, "%s=\"%s\"", param, tmp);
2382                 g_free(tmp);
2383                 break;
2384
2385         }
2386
2387         if (buf->str && strlen(buf->str)) {
2388                 tmp = strstr(buf->str, "\n");
2389                 if (tmp)
2390                         len = (tmp - buf->str);
2391                 else
2392                         len = strlen(buf->str);
2393                 if (pdata->len + len > 76) {
2394                         if (fprintf(pdata->fp, ";\n %s", buf->str) < 0)
2395                                 pdata->error = TRUE;
2396                         pdata->len = strlen(buf->str) + 1;
2397                 } else {
2398                         if (fprintf(pdata->fp, "; %s", buf->str) < 0)
2399                                 pdata->error = TRUE;
2400                         pdata->len += strlen(buf->str) + 2;
2401                 }
2402         }
2403         g_string_free(buf, TRUE);
2404 }
2405
2406 #define TRY(func) { \
2407         if (!(func)) { \
2408                 return -1; \
2409         } \
2410 }
2411
2412 int procmime_write_mime_header(MimeInfo *mimeinfo, FILE *fp)
2413 {
2414         struct TypeTable *type_table;
2415         ParametersData *pdata = g_new0(ParametersData, 1);
2416         debug_print("procmime_write_mime_header\n");
2417
2418         pdata->fp = fp;
2419         pdata->error = FALSE;
2420         for (type_table = mime_type_table; type_table->str != NULL; type_table++)
2421                 if (mimeinfo->type == type_table->type) {
2422                         gchar *buf = g_strdup_printf(
2423                                 "Content-Type: %s/%s", type_table->str, mimeinfo->subtype);
2424                         if (fprintf(fp, "%s", buf) < 0) {
2425                                 g_free(buf);
2426                                 g_free(pdata);
2427                                 return -1;
2428                         }
2429                         pdata->len = strlen(buf);
2430                         g_free(buf);
2431                         break;
2432                 }
2433         g_hash_table_foreach(mimeinfo->typeparameters, write_parameters, pdata);
2434         if (pdata->error == TRUE) {
2435                 g_free(pdata);
2436                 return -1;
2437         }
2438         g_free(pdata);
2439
2440         TRY(fprintf(fp, "\n") >= 0);
2441
2442         if (mimeinfo->encoding_type != ENC_UNKNOWN)
2443                 TRY(fprintf(fp, "Content-Transfer-Encoding: %s\n", procmime_get_encoding_str(mimeinfo->encoding_type)) >= 0);
2444
2445         if (mimeinfo->description != NULL)
2446                 TRY(fprintf(fp, "Content-Description: %s\n", mimeinfo->description) >= 0);
2447
2448         if (mimeinfo->id != NULL)
2449                 TRY(fprintf(fp, "Content-ID: %s\n", mimeinfo->id) >= 0);
2450
2451         if (mimeinfo->location != NULL)
2452                 TRY(fprintf(fp, "Content-Location: %s\n", mimeinfo->location) >= 0);
2453
2454         if (mimeinfo->disposition != DISPOSITIONTYPE_UNKNOWN) {
2455                 ParametersData *pdata = g_new0(ParametersData, 1);
2456                 gchar *buf = NULL;
2457                 if (mimeinfo->disposition == DISPOSITIONTYPE_INLINE)
2458                         buf = g_strdup("Content-Disposition: inline");
2459                 else if (mimeinfo->disposition == DISPOSITIONTYPE_ATTACHMENT)
2460                         buf = g_strdup("Content-Disposition: attachment");
2461                 else
2462                         buf = g_strdup("Content-Disposition: unknown");
2463
2464                 if (fprintf(fp, "%s", buf) < 0) {
2465                         g_free(buf);
2466                         g_free(pdata);
2467                         return -1;
2468                 }
2469                 pdata->len = strlen(buf);
2470                 g_free(buf);
2471
2472                 pdata->fp = fp;
2473                 pdata->error = FALSE;
2474                 g_hash_table_foreach(mimeinfo->dispositionparameters, write_parameters, pdata);
2475                 if (pdata->error == TRUE) {
2476                         g_free(pdata);
2477                         return -1;
2478                 }
2479                 g_free(pdata);
2480                 TRY(fprintf(fp, "\n") >= 0);
2481         }
2482
2483         TRY(fprintf(fp, "\n") >= 0);
2484
2485         return 0;
2486 }
2487
2488 static gint procmime_write_message_rfc822(MimeInfo *mimeinfo, FILE *fp)
2489 {
2490         FILE *infp;
2491         GNode *childnode;
2492         MimeInfo *child;
2493         gchar buf[BUFFSIZE];
2494         gboolean skip = FALSE;;
2495         size_t len;
2496
2497         debug_print("procmime_write_message_rfc822\n");
2498
2499         /* write header */
2500         switch (mimeinfo->content) {
2501         case MIMECONTENT_FILE:
2502                 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2503                         FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2504                         return -1;
2505                 }
2506                 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2507                         FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2508                         procmime_fclose(infp);
2509                         return -1;
2510                 }
2511                 while (SC_FGETS(buf, sizeof(buf), infp) == buf) {
2512                         strcrchomp(buf);
2513                         if (buf[0] == '\n' && buf[1] == '\0')
2514                                 break;
2515                         if (skip && (buf[0] == ' ' || buf[0] == '\t'))
2516                                 continue;
2517                         if (g_ascii_strncasecmp(buf, "MIME-Version:", 13) == 0 ||
2518                             g_ascii_strncasecmp(buf, "Content-Type:", 13) == 0 ||
2519                             g_ascii_strncasecmp(buf, "Content-Transfer-Encoding:", 26) == 0 ||
2520                             g_ascii_strncasecmp(buf, "Content-Description:", 20) == 0 ||
2521                             g_ascii_strncasecmp(buf, "Content-ID:", 11) == 0 ||
2522                             g_ascii_strncasecmp(buf, "Content-Location:", 17) == 0 ||
2523                             g_ascii_strncasecmp(buf, "Content-Disposition:", 20) == 0) {
2524                                 skip = TRUE;
2525                                 continue;
2526                         }
2527                         len = strlen(buf);
2528                         if (SC_FWRITE(buf, sizeof(gchar), len, fp) < len) {
2529                                 g_warning("failed to dump %zd bytes from file", len);
2530                                 procmime_fclose(infp);
2531                                 return -1;
2532                         }
2533                         skip = FALSE;
2534                 }
2535                 procmime_fclose(infp);
2536                 break;
2537
2538         case MIMECONTENT_MEM:
2539                 len = strlen(mimeinfo->data.mem);
2540                 if (SC_FWRITE(mimeinfo->data.mem, sizeof(gchar), len, fp) < len) {
2541                         g_warning("failed to dump %zd bytes from mem", len);
2542                         return -1;
2543                 }
2544                 break;
2545
2546         default:
2547                 break;
2548         }
2549
2550         childnode = mimeinfo->node->children;
2551         if (childnode == NULL)
2552                 return -1;
2553
2554         child = (MimeInfo *) childnode->data;
2555         if (fprintf(fp, "MIME-Version: 1.0\n") < 0) {
2556                 g_warning("failed to write mime version");
2557                 return -1;
2558         }
2559         if (procmime_write_mime_header(child, fp) < 0)
2560                 return -1;
2561         return procmime_write_mimeinfo(child, fp);
2562 }
2563
2564 static gint procmime_write_multipart(MimeInfo *mimeinfo, FILE *fp)
2565 {
2566         FILE *infp;
2567         GNode *childnode;
2568         gchar *boundary, *str, *str2;
2569         gchar buf[BUFFSIZE];
2570         gboolean firstboundary;
2571         size_t len;
2572
2573         debug_print("procmime_write_multipart\n");
2574
2575         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
2576
2577         switch (mimeinfo->content) {
2578         case MIMECONTENT_FILE:
2579                 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2580                         FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2581                         return -1;
2582                 }
2583                 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2584                         FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2585                         procmime_fclose(infp);
2586                         return -1;
2587                 }
2588                 while (SC_FGETS(buf, sizeof(buf), infp) == buf) {
2589                         if (IS_BOUNDARY(buf, boundary, strlen(boundary)))
2590                                 break;
2591                         len = strlen(buf);
2592                         if (SC_FWRITE(buf, sizeof(gchar), len, fp) < len) {
2593                                 g_warning("failed to write %zd", len);
2594                                 procmime_fclose(infp);
2595                                 return -1;
2596                         }
2597                 }
2598                 procmime_fclose(infp);
2599                 break;
2600
2601         case MIMECONTENT_MEM:
2602                 str = g_strdup(mimeinfo->data.mem);
2603                 if (((str2 = strstr(str, boundary)) != NULL) && ((str2 - str) >= 2) &&
2604                     (*(str2 - 1) == '-') && (*(str2 - 2) == '-'))
2605                         *(str2 - 2) = '\0';
2606                 len = strlen(str);
2607                 if (SC_FWRITE(str, sizeof(gchar), len, fp) < len) {
2608                         g_warning("failed to write %zd from mem", len);
2609                         g_free(str);
2610                         return -1;
2611                 }
2612                 g_free(str);
2613                 break;
2614
2615         default:
2616                 break;
2617         }
2618
2619         childnode = mimeinfo->node->children;
2620         firstboundary = TRUE;
2621         while (childnode != NULL) {
2622                 MimeInfo *child = childnode->data;
2623
2624                 if (firstboundary)
2625                         firstboundary = FALSE;
2626                 else
2627                         TRY(fprintf(fp, "\n") >= 0);
2628
2629                 TRY(fprintf(fp, "--%s\n", boundary) >= 0);
2630
2631                 if (procmime_write_mime_header(child, fp) < 0)
2632                         return -1;
2633                 if (procmime_write_mimeinfo(child, fp) < 0)
2634                         return -1;
2635
2636                 childnode = g_node_next_sibling(childnode);
2637         }
2638         TRY(fprintf(fp, "\n--%s--\n", boundary) >= 0);
2639
2640         return 0;
2641 }
2642
2643 gint procmime_write_mimeinfo(MimeInfo *mimeinfo, FILE *fp)
2644 {
2645         FILE *infp;
2646         size_t len;
2647         debug_print("procmime_write_mimeinfo\n");
2648
2649         if (G_NODE_IS_LEAF(mimeinfo->node)) {
2650                 switch (mimeinfo->content) {
2651                 case MIMECONTENT_FILE:
2652                         if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2653                                 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2654                                 return -1;
2655                         }
2656                         copy_file_part_to_fp(infp, mimeinfo->offset, mimeinfo->length, fp);
2657                         procmime_fclose(infp);
2658                         return 0;
2659
2660                 case MIMECONTENT_MEM:
2661                         len = strlen(mimeinfo->data.mem);
2662                         if (SC_FWRITE(mimeinfo->data.mem, sizeof(gchar), len, fp) < len)
2663                                 return -1;
2664                         return 0;
2665
2666                 default:
2667                         return 0;
2668                 }
2669         } else {
2670                 /* Call writer for mime type */
2671                 switch (mimeinfo->type) {
2672                 case MIMETYPE_MESSAGE:
2673                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2674                                 return procmime_write_message_rfc822(mimeinfo, fp);
2675                         }
2676                         break;
2677
2678                 case MIMETYPE_MULTIPART:
2679                         return procmime_write_multipart(mimeinfo, fp);
2680
2681                 default:
2682                         break;
2683                 }
2684
2685                 return -1;
2686         }
2687
2688         return 0;
2689 }
2690
2691 gchar *procmime_get_part_file_name(MimeInfo *mimeinfo)
2692 {
2693         gchar *base;
2694
2695         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
2696                 base = g_strdup("mimetmp.html");
2697         else {
2698                 const gchar *basetmp;
2699                 gchar *basename;
2700
2701                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
2702                 if (basetmp == NULL)
2703                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
2704                 if (basetmp == NULL)
2705                         basetmp = "mimetmp";
2706                 basename = g_path_get_basename(basetmp);
2707                 if (*basename == '\0') {
2708                         g_free(basename);
2709                         basename = g_strdup("mimetmp");
2710                 }
2711                 base = conv_filename_from_utf8(basename);
2712                 g_free(basename);
2713                 subst_for_shellsafe_filename(base);
2714         }
2715
2716         return base;
2717 }
2718