src/plugins/tnef_parse/tnef_parse.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2007 Colin Leroy <colin@colino.net>
   4  * and the Claws Mail Team
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #  include "config.h"
  23 #include "claws-features.h"
  24 #endif
  25
  26 #include <unistd.h>
  27 #include <stdio.h>
  28
  29 #include <glib.h>
  30 #include <glib/gi18n.h>
  31 #include <gtk/gtk.h>
  32 #include "common/claws.h"
  33 #include "common/version.h"
  34 #include "main.h"
  35 #include "plugin.h"
  36 #include "procmime.h"
  37 #include "utils.h"
  38
  39 #include <tnef-types.h>
  40 #include <ytnef.h>
  41 #include <mapi.h>
  42 #include <mapidefs.h>
  43
  44 #include "tnef_dump.h"
  45
  46 static MimeParser *tnef_parser = NULL;
  47
  48 static MimeInfo *tnef_broken_mimeinfo(const gchar *reason)
  49 {
  50         MimeInfo *sub_info = NULL;
  51         gchar *tmpfilename = NULL;
  52         FILE *fp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
  53         struct stat statbuf;
  54
  55         if (!fp) {
  56                 g_free(tmpfilename);
  57                 return NULL;
  58         }
  59         sub_info = procmime_mimeinfo_new();
  60         sub_info->content = MIMECONTENT_FILE;
  61         sub_info->data.filename = tmpfilename;
  62         sub_info->type = MIMETYPE_TEXT;
  63         sub_info->subtype = g_strdup("plain");
  64
  65         fprintf(fp, _("\n"
  66                         "Claws Mail TNEF parser:\n\n"
  67                         "%s\n"), reason?reason:_("Unknown error"));
  68
  69         fclose(fp);
  70         if (g_stat(tmpfilename, &statbuf) < 0) {
  71                 claws_unlink(tmpfilename);
  72                 procmime_mimeinfo_free_all(sub_info);
  73                 return NULL;
  74
  75         }
  76
  77         sub_info->tmp = TRUE;
  78         sub_info->length = statbuf.st_size;
  79         sub_info->encoding_type = ENC_BINARY;
  80
  81         return sub_info;
  82
  83 }
  84
  85 static MimeInfo *tnef_dump_file(const gchar *filename, char *data, size_t size)
  86 {
  87         MimeInfo *sub_info = NULL;
  88         gchar *tmpfilename = NULL;
  89         FILE *fp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
  90         struct stat statbuf;
  91         gchar *content_type = NULL;
  92         if (!fp) {
  93                 g_free(tmpfilename);
  94                 return NULL;
  95         }
  96         sub_info = procmime_mimeinfo_new();
  97         sub_info->content = MIMECONTENT_FILE;
  98         sub_info->data.filename = tmpfilename;
  99         sub_info->type = MIMETYPE_APPLICATION;
 100         sub_info->subtype = g_strdup("octet-stream");
 101
 102         if (filename) {
 103                 g_hash_table_insert(sub_info->typeparameters,
 104                                     g_strdup("filename"),
 105                                     g_strdup(filename));
 106
 107                 content_type = procmime_get_mime_type(filename);
 108                 if (content_type && strchr(content_type, '/')) {
 109                         g_free(sub_info->subtype);
 110                         sub_info->subtype = g_strdup(strchr(content_type, '/')+1);
 111                         *(strchr(content_type, '/')) = '\0';
 112                         sub_info->type = procmime_get_media_type(content_type);
 113                         g_free(content_type);
 114                 }
 115         }
 116
 117         if (fwrite(data, 1, size, fp) < size) {
 118                 FILE_OP_ERROR(tmpfilename, "fwrite");
 119                 fclose(fp);
 120                 claws_unlink(tmpfilename);
 121                 procmime_mimeinfo_free_all(sub_info);
 122                 return tnef_broken_mimeinfo(_("Failed to write the part data."));
 123         }
 124         fclose(fp);
 125
 126         if (g_stat(tmpfilename, &statbuf) < 0) {
 127                 claws_unlink(tmpfilename);
 128                 procmime_mimeinfo_free_all(sub_info);
 129                 return tnef_broken_mimeinfo(_("Failed to write the part data."));
 130         } else {
 131                 sub_info->tmp = TRUE;
 132                 sub_info->length = statbuf.st_size;
 133                 sub_info->encoding_type = ENC_BINARY;
 134         }
 135
 136         return sub_info;
 137 }
 138
 139 MimeInfo *tnef_parse_vcal(TNEFStruct *tnef)
 140 {
 141         MimeInfo *sub_info = NULL;
 142         gchar *tmpfilename = NULL;
 143         FILE *fp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 144         struct stat statbuf;
 145         gboolean result = FALSE;
 146         if (!fp) {
 147                 g_free(tmpfilename);
 148                 return NULL;
 149         }
 150         sub_info = procmime_mimeinfo_new();
 151         sub_info->content = MIMECONTENT_FILE;
 152         sub_info->data.filename = tmpfilename;
 153         sub_info->type = MIMETYPE_TEXT;
 154         sub_info->subtype = g_strdup("calendar");
 155         g_hash_table_insert(sub_info->typeparameters,
 156                             g_strdup("filename"),
 157                             g_strdup("calendar.ics"));
 158
 159         result = SaveVCalendar(fp, tnef);
 160
 161         fclose(fp);
 162
 163         if (g_stat(tmpfilename, &statbuf) < 0) {
 164                 result = FALSE;
 165         } else {
 166                 sub_info->tmp = TRUE;
 167                 sub_info->length = statbuf.st_size;
 168                 sub_info->encoding_type = ENC_BINARY;
 169         }
 170
 171         if (!result) {
 172                 claws_unlink(tmpfilename);
 173                 procmime_mimeinfo_free_all(sub_info);
 174                 return tnef_broken_mimeinfo(_("Failed to parse VCalendar data."));
 175         }
 176         return sub_info;
 177 }
 178
 179 MimeInfo *tnef_parse_vtask(TNEFStruct *tnef)
 180 {
 181         MimeInfo *sub_info = NULL;
 182         gchar *tmpfilename = NULL;
 183         FILE *fp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 184         struct stat statbuf;
 185         gboolean result = FALSE;
 186         if (!fp) {
 187                 g_free(tmpfilename);
 188                 return NULL;
 189         }
 190         sub_info = procmime_mimeinfo_new();
 191         sub_info->content = MIMECONTENT_FILE;
 192         sub_info->data.filename = tmpfilename;
 193         sub_info->type = MIMETYPE_TEXT;
 194         sub_info->subtype = g_strdup("calendar");
 195         g_hash_table_insert(sub_info->typeparameters,
 196                             g_strdup("filename"),
 197                             g_strdup("task.ics"));
 198
 199         result = SaveVTask(fp, tnef);
 200
 201         fclose(fp);
 202
 203         if (g_stat(tmpfilename, &statbuf) < 0) {
 204                 result = FALSE;
 205         } else {
 206                 sub_info->tmp = TRUE;
 207                 sub_info->length = statbuf.st_size;
 208                 sub_info->encoding_type = ENC_BINARY;
 209         }
 210         if (!result) {
 211                 claws_unlink(tmpfilename);
 212                 procmime_mimeinfo_free_all(sub_info);
 213                 return tnef_broken_mimeinfo(_("Failed to parse VTask data."));
 214         }
 215         return sub_info;
 216 }
 217
 218 MimeInfo *tnef_parse_rtf(TNEFStruct *tnef, variableLength *tmp_var)
 219 {
 220         variableLength buf;
 221         MimeInfo *info = NULL;
 222         buf.data = DecompressRTF(tmp_var, &(buf.size));
 223         if (buf.data) {
 224                 info = tnef_dump_file("message.rtf", buf.data, buf.size);
 225                 free(buf.data);
 226                 return info;
 227         } else {
 228                 return NULL;
 229         }
 230 }
 231
 232 MimeInfo *tnef_parse_vcard(TNEFStruct *tnef)
 233 {
 234         MimeInfo *sub_info = NULL;
 235         gchar *tmpfilename = NULL;
 236         FILE *fp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
 237         struct stat statbuf;
 238         gboolean result = FALSE;
 239         if (!fp) {
 240                 g_free(tmpfilename);
 241                 return NULL;
 242         }
 243         sub_info = procmime_mimeinfo_new();
 244         sub_info->content = MIMECONTENT_FILE;
 245         sub_info->data.filename = tmpfilename;
 246         sub_info->type = MIMETYPE_TEXT;
 247         sub_info->subtype = g_strdup("x-vcard");
 248         g_hash_table_insert(sub_info->typeparameters,
 249                             g_strdup("filename"),
 250                             g_strdup("contact.vcf"));
 251
 252         result = SaveVCard(fp, tnef);
 253
 254         fclose(fp);
 255         g_stat(tmpfilename, &statbuf);
 256         sub_info->tmp = TRUE;
 257         sub_info->length = statbuf.st_size;
 258         sub_info->encoding_type = ENC_BINARY;
 259
 260         if (!result) {
 261                 claws_unlink(tmpfilename);
 262                 procmime_mimeinfo_free_all(sub_info);
 263                 return tnef_broken_mimeinfo(_("Failed to parse VCard data."));
 264         }
 265         return sub_info;
 266 }
 267
 268 static gboolean tnef_parse (MimeParser *parser, MimeInfo *mimeinfo)
 269 {
 270         TNEFStruct *tnef;
 271         MimeInfo *sub_info = NULL;
 272         variableLength *tmp_var;
 273         Attachment *att;
 274         int parse_result = 0;
 275         gboolean cal_done = FALSE;
 276
 277         if (!procmime_decode_content(mimeinfo)) {
 278                 debug_print("error decoding\n");
 279                 return FALSE;
 280         }
 281         debug_print("Tnef parser parsing part (%d).\n", mimeinfo->length);
 282         if (mimeinfo->content == MIMECONTENT_FILE)
 283                 debug_print("content: %s\n", mimeinfo->data.filename);
 284         else
 285                 debug_print("contents in memory (len %zd)\n",
 286                         strlen(mimeinfo->data.mem));
 287
 288         tnef = g_new0(TNEFStruct, 1);
 289         TNEFInitialize(tnef);
 290
 291         tnef->Debug = debug_get_mode();
 292
 293         if (mimeinfo->content == MIMECONTENT_MEM)
 294                 parse_result = TNEFParseMemory(mimeinfo->data.mem, mimeinfo->length, tnef);
 295         else
 296                 parse_result = TNEFParseFile(mimeinfo->data.filename, tnef);
 297
 298         mimeinfo->type = MIMETYPE_MULTIPART;
 299         mimeinfo->subtype = g_strdup("mixed");
 300         g_hash_table_insert(mimeinfo->typeparameters,
 301                             g_strdup("description"),
 302                             g_strdup("Parsed from MS-TNEF"));
 303
 304         if (parse_result != 0) {
 305                 g_warning("Failed to parse TNEF data.");
 306                 TNEFFree(tnef);
 307                 return FALSE;
 308         }
 309
 310         sub_info = NULL;
 311         if (tnef->messageClass[0] != '\0') {
 312                 if (strcmp(tnef->messageClass, "IPM.Contact") == 0)
 313                         sub_info = tnef_parse_vcard(tnef);
 314                 else if (strcmp(tnef->messageClass, "IPM.Task") == 0)
 315                         sub_info = tnef_parse_vtask(tnef);
 316                 else if (strcmp(tnef->messageClass, "IPM.Appointment") == 0) {
 317                         sub_info = tnef_parse_vcal(tnef);
 318                         cal_done = TRUE;
 319                 }
 320         }
 321
 322         if (sub_info)
 323                 g_node_append(mimeinfo->node, sub_info->node);
 324         sub_info = NULL;
 325
 326         if (tnef->MapiProperties.count > 0) {
 327                 tmp_var = MAPIFindProperty (&(tnef->MapiProperties), PROP_TAG(PT_BINARY,PR_RTF_COMPRESSED));
 328                 if (tmp_var != MAPI_UNDEFINED) {
 329                         sub_info = tnef_parse_rtf(tnef, tmp_var);
 330                 }
 331         }
 332
 333         if (sub_info)
 334                 g_node_append(mimeinfo->node, sub_info->node);
 335         sub_info = NULL;
 336
 337         tmp_var = MAPIFindUserProp(&(tnef->MapiProperties), PROP_TAG(PT_STRING8,0x24));
 338         if (tmp_var != MAPI_UNDEFINED) {
 339                 if (!cal_done && strcmp(tmp_var->data, "IPM.Appointment") == 0) {
 340                         sub_info = tnef_parse_vcal(tnef);
 341                 }
 342         }
 343
 344         if (sub_info)
 345                 g_node_append(mimeinfo->node, sub_info->node);
 346         sub_info = NULL;
 347
 348         att = tnef->starting_attach.next;
 349         while (att) {
 350                 gchar *filename = NULL;
 351                 gboolean is_object = TRUE;
 352                 DWORD signature;
 353
 354                 tmp_var = MAPIFindProperty(&(att->MAPI), PROP_TAG(30,0x3707));
 355                 if (tmp_var == MAPI_UNDEFINED)
 356                         tmp_var = MAPIFindProperty(&(att->MAPI), PROP_TAG(30,0x3001));
 357                 if (tmp_var == MAPI_UNDEFINED)
 358                         tmp_var = &(att->Title);
 359
 360                 if (tmp_var->data)
 361                         filename = g_strdup(tmp_var->data);
 362
 363                 tmp_var = MAPIFindProperty(&(att->MAPI), PROP_TAG(PT_OBJECT, PR_ATTACH_DATA_OBJ));
 364                 if (tmp_var == MAPI_UNDEFINED)
 365                         tmp_var = MAPIFindProperty(&(att->MAPI), PROP_TAG(PT_BINARY, PR_ATTACH_DATA_OBJ));
 366                 if (tmp_var == MAPI_UNDEFINED) {
 367                         tmp_var = &(att->FileData);
 368                         is_object = FALSE;
 369                 }
 370
 371                 sub_info = tnef_dump_file(filename,
 372                         tmp_var->data + (is_object ? 16:0),
 373                         tmp_var->size - (is_object ? 16:0));
 374
 375                 if (sub_info)
 376                         g_node_append(mimeinfo->node, sub_info->node);
 377
 378                 memcpy(&signature, tmp_var->data+(is_object ? 16:0), sizeof(DWORD));
 379
 380                 if (TNEFCheckForSignature(signature) == 0) {
 381                         debug_print("that's TNEF stuff, process it\n");
 382                         tnef_parse(parser, sub_info);
 383                 }
 384
 385                 sub_info = NULL;
 386
 387                 att = att->next;
 388
 389                 g_free(filename);
 390         }
 391
 392         TNEFFree(tnef);
 393         return TRUE;
 394 }
 395
 396 gint plugin_init(gchar **error)
 397 {
 398         if (!check_plugin_version(MAKE_NUMERIC_VERSION(2,9,2,72),
 399                                 VERSION_NUMERIC, _("TNEF Parser"), error))
 400                 return -1;
 401
 402         tnef_parser = g_new0(MimeParser, 1);
 403         tnef_parser->type = MIMETYPE_APPLICATION;
 404         tnef_parser->sub_type = "ms-tnef";
 405         tnef_parser->parse = tnef_parse;
 406
 407         procmime_mimeparser_register(tnef_parser);
 408
 409         return 0;
 410 }
 411
 412 gboolean plugin_done(void)
 413 {
 414         procmime_mimeparser_unregister(tnef_parser);
 415         g_free(tnef_parser);
 416         tnef_parser = NULL;
 417
 418         return TRUE;
 419 }
 420
 421 const gchar *plugin_name(void)
 422 {
 423         return _("TNEF Parser");
 424 }
 425
 426 const gchar *plugin_desc(void)
 427 {
 428         return _("This Claws Mail plugin allows you to read application/ms-tnef attachments.\n\n"
 429                  "The plugin uses the Ytnef library, which is copyright 2002-2007 by "
 430                  "Randall Hand <yerase@yerot.com>");
 431 }
 432
 433 const gchar *plugin_type(void)
 434 {
 435         return "GTK2";
 436 }
 437
 438 const gchar *plugin_licence(void)
 439 {
 440         return "GPL3+";
 441 }
 442
 443 const gchar *plugin_version(void)
 444 {
 445         return VERSION;
 446 }
 447
 448 struct PluginFeature *plugin_provides(void)
 449 {
 450         static struct PluginFeature features[] =
 451                 { {PLUGIN_MIMEPARSER, "application/ms-tnef"},
 452                   {PLUGIN_NOTHING, NULL}};
 453         return features;
 454 }