/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* camel-imap-folder.c: class for an imap folder */ /* * Authors: Jeffrey Stedfast * * Copyright (C) 2000 Helix Code, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA */ #include #include #include #include #include #include #include #include #include #include #include #include "camel-imap-folder.h" #include "camel-imap-command.h" #include "camel-imap-search.h" #include "camel-imap-store.h" #include "camel-imap-summary.h" #include "camel-imap-utils.h" #include "camel-imap-wrapper.h" #include "string-utils.h" #include "camel-stream.h" #include "camel-stream-fs.h" #include "camel-stream-mem.h" #include "camel-stream-buffer.h" #include "camel-data-wrapper.h" #include "camel-mime-message.h" #include "camel-stream-filter.h" #include "camel-mime-filter-from.h" #include "camel-mime-filter-crlf.h" #include "camel-exception.h" #include "camel-mime-utils.h" #include "camel-imap-private.h" #include "camel-multipart.h" #include "camel-operation.h" #define d(x) x #define CF_CLASS(o) (CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(o))) static CamelFolderClass *parent_class = NULL; static void imap_finalize (CamelObject *object); static void imap_rescan (CamelFolder *folder, int exists, CamelException *ex); static void imap_refresh_info (CamelFolder *folder, CamelException *ex); static void imap_sync (CamelFolder *folder, gboolean expunge, CamelException *ex); static const char *imap_get_full_name (CamelFolder *folder); static void imap_expunge (CamelFolder *folder, CamelException *ex); /* message manipulation */ static CamelMimeMessage *imap_get_message (CamelFolder *folder, const gchar *uid, CamelException *ex); static void imap_append_message (CamelFolder *folder, CamelMimeMessage *message, const CamelMessageInfo *info, CamelException *ex); static void imap_copy_message_to (CamelFolder *source, const char *uid, CamelFolder *destination, CamelException *ex); static void imap_move_message_to (CamelFolder *source, const char *uid, CamelFolder *destination, CamelException *ex); /* summary info */ static void imap_update_summary (CamelFolder *folder, int first, int last, CamelFolderChangeInfo *changes, CamelException *ex); /* searching */ static GPtrArray *imap_search_by_expression (CamelFolder *folder, const char *expression, CamelException *ex); static void imap_search_free (CamelFolder *folder, GPtrArray *uids); static void camel_imap_folder_class_init (CamelImapFolderClass *camel_imap_folder_class) { CamelFolderClass *camel_folder_class = CAMEL_FOLDER_CLASS (camel_imap_folder_class); parent_class = CAMEL_FOLDER_CLASS(camel_type_get_global_classfuncs (camel_folder_get_type ())); /* virtual method definition */ /* virtual method overload */ camel_folder_class->refresh_info = imap_refresh_info; camel_folder_class->sync = imap_sync; camel_folder_class->expunge = imap_expunge; camel_folder_class->get_full_name = imap_get_full_name; camel_folder_class->get_message = imap_get_message; camel_folder_class->append_message = imap_append_message; camel_folder_class->copy_message_to = imap_copy_message_to; camel_folder_class->move_message_to = imap_move_message_to; camel_folder_class->search_by_expression = imap_search_by_expression; camel_folder_class->search_free = imap_search_free; } static void camel_imap_folder_init (gpointer object, gpointer klass) { CamelImapFolder *imap_folder = CAMEL_IMAP_FOLDER (object); CamelFolder *folder = CAMEL_FOLDER (object); folder->has_summary_capability = TRUE; folder->has_search_capability = TRUE; imap_folder->priv = g_malloc0(sizeof(*imap_folder->priv)); #ifdef ENABLE_THREADS imap_folder->priv->search_lock = g_mutex_new(); #endif } CamelType camel_imap_folder_get_type (void) { static CamelType camel_imap_folder_type = CAMEL_INVALID_TYPE; if (camel_imap_folder_type == CAMEL_INVALID_TYPE) { camel_imap_folder_type = camel_type_register (CAMEL_FOLDER_TYPE, "CamelImapFolder", sizeof (CamelImapFolder), sizeof (CamelImapFolderClass), (CamelObjectClassInitFunc) camel_imap_folder_class_init, NULL, (CamelObjectInitFunc) camel_imap_folder_init, (CamelObjectFinalizeFunc) imap_finalize); } return camel_imap_folder_type; } CamelFolder * camel_imap_folder_new (CamelStore *parent, const char *folder_name, const char *short_name, const char *summary_file, CamelException *ex) { CamelImapStore *imap_store = CAMEL_IMAP_STORE (parent); CamelFolder *folder = CAMEL_FOLDER (camel_object_new (camel_imap_folder_get_type ())); CamelImapResponse *response; char *resp; guint32 validity = 0; int i, exists = 0; camel_folder_construct (folder, parent, folder_name, short_name); CAMEL_IMAP_STORE_LOCK(imap_store, command_lock); response = camel_imap_command (imap_store, folder, ex, NULL); CAMEL_IMAP_STORE_UNLOCK(imap_store, command_lock); if (!response) { camel_object_unref ((CamelObject *)folder); return NULL; } for (i = 0; i < response->untagged->len; i++) { resp = response->untagged->pdata[i] + 2; if (!g_strncasecmp (resp, "FLAGS ", 6)) { resp += 6; folder->permanent_flags = imap_parse_flag_list (&resp); } else if (!g_strncasecmp (resp, "OK [PERMANENTFLAGS ", 19)) { resp += 19; folder->permanent_flags = imap_parse_flag_list (&resp); } else if (!g_strncasecmp (resp, "OK [UIDVALIDITY ", 16)) { validity = strtoul (resp + 16, NULL, 10); } else if (isdigit ((unsigned char)*resp)) { unsigned long num = strtoul (resp, &resp, 10); if (!g_strncasecmp (resp, " EXISTS", 7)) exists = num; } } camel_imap_response_free (response); folder->summary = camel_imap_summary_new (summary_file, validity); if (!folder->summary) { camel_object_unref (CAMEL_OBJECT (folder)); camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, _("Could not load summary for %s"), folder_name); return NULL; } CAMEL_IMAP_STORE_LOCK(imap_store, command_lock); imap_rescan (folder, exists, ex); CAMEL_IMAP_STORE_UNLOCK(imap_store, command_lock); if (camel_exception_is_set (ex)) { camel_object_unref (CAMEL_OBJECT (folder)); return NULL; } return folder; } /* Called with the store's command_lock locked */ void camel_imap_folder_selected (CamelFolder *folder, CamelImapResponse *response, CamelException *ex) { unsigned long exists = 0, val, uid; CamelMessageInfo *info; int i, count; char *resp; for (i = 0; i < response->untagged->len; i++) { resp = response->untagged->pdata[i] + 2; exists = strtoul (resp, &resp, 10); if (!g_strncasecmp (resp, " EXISTS", 7)) break; } if (i == response->untagged->len) { g_warning ("Server response did not include EXISTS info"); return; } count = camel_folder_summary_count (folder->summary); /* If we've lost messages, we have to rescan everything */ if (exists < count) { imap_rescan (folder, exists, ex); return; } if (count != 0) { /* Similarly, if the UID of the highest message we * know about has changed, then that indicates that * messages have been both added and removed, so we * have to rescan to find the removed ones. (We pass * NULL for the folder since we know that this folder * is selected, and we don't want camel_imap_command * to worry about it.) */ response = camel_imap_command (CAMEL_IMAP_STORE (folder->parent_store), NULL, ex, "FETCH %d UID", count); if (!response) return; uid = 0; for (i = 0; i < response->untagged->len; i++) { resp = response->untagged->pdata[i]; val = strtoul (resp + 2, &resp, 10); if (val != count || g_strncasecmp (resp, " FETCH (", 8) != 0) continue; resp = e_strstrcase (resp, "UID "); if (!resp) continue; uid = strtoul (resp + 4, NULL, 10); break; } camel_imap_response_free (response); info = camel_folder_summary_index (folder->summary, count - 1); val = strtoul (camel_message_info_uid (info), NULL, 10); camel_folder_summary_info_free (folder->summary, info); if (uid == 0 || uid != val) { imap_rescan (folder, exists, ex); return; } } /* OK. So now we know that no messages have been expunged. Whew. * Now see if messages have been added. */ if (exists > count) camel_imap_folder_changed (folder, exists, NULL, ex); /* And we're done. */ } static void imap_finalize (CamelObject *object) { CamelImapFolder *imap_folder = CAMEL_IMAP_FOLDER (object); if (imap_folder->search) camel_object_unref ((CamelObject *)imap_folder->search); #ifdef ENABLE_THREADS g_mutex_free(imap_folder->priv->search_lock); #endif g_free(imap_folder->priv); } static void imap_refresh_info (CamelFolder *folder, CamelException *ex) { CAMEL_IMAP_STORE_LOCK (folder->parent_store, command_lock); imap_rescan (folder, camel_folder_summary_count (folder->summary), ex); CAMEL_IMAP_STORE_UNLOCK (folder->parent_store, command_lock); } /* Called with the store's command_lock locked */ static void imap_rescan (CamelFolder *folder, int exists, CamelException *ex) { CamelImapStore *store = CAMEL_IMAP_STORE (folder->parent_store); CamelImapResponse *response; struct { char *uid; guint32 flags; } *new = NULL; char *resp, *p, *flags; const char *uid; int i, j, seq, summary_len; CamelMessageInfo *info; CamelImapMessageInfo *iinfo; GArray *removed; camel_operation_start(NULL, _("Scanning IMAP folder")); /* Get UIDs and flags of all messages. */ if (exists > 0) { response = camel_imap_command (store, folder, ex, "FETCH 1:%d (UID FLAGS)", exists); if (!response) return; new = g_malloc0 (exists * sizeof (*new)); for (i = 0; i < response->untagged->len; i++) { resp = response->untagged->pdata[i]; seq = strtoul (resp + 2, &resp, 10); if (g_strncasecmp (resp, " FETCH ", 7) != 0) continue; uid = e_strstrcase (resp, "UID "); if (uid) { uid += 4; strtoul (uid, &p, 10); new[seq - 1].uid = g_strndup (uid, p - uid); } flags = e_strstrcase (resp, "FLAGS "); if (flags) { flags += 6; new[seq - 1].flags = imap_parse_flag_list (&flags); } } camel_imap_response_free (response); } /* If we find a UID in the summary that doesn't correspond to * the UID in the folder, that it means the message was * deleted on the server, so we remove it from the summary. */ removed = g_array_new (FALSE, FALSE, sizeof (int)); summary_len = camel_folder_summary_count (folder->summary); for (i = 0; i < summary_len && i < exists; i++) { int pc = (i*100)/MIN(summary_len, exists); camel_operation_progress(NULL, pc); /* Shouldn't happen, but... */ if (!new[i].uid) continue; info = camel_folder_summary_index (folder->summary, i); iinfo = (CamelImapMessageInfo *)info; if (strcmp (camel_message_info_uid (info), new[i].uid) != 0) { seq = i + 1; g_array_append_val (removed, seq); i--; summary_len--; continue; } /* Update summary flags */ if (new[i].flags != iinfo->server_flags) { guint32 server_set, server_cleared; server_set = new[i].flags & ~iinfo->server_flags; server_cleared = iinfo->server_flags & ~new[i].flags; info->flags = (info->flags | server_set) & ~server_cleared; iinfo->server_flags = new[i].flags; camel_object_trigger_event (CAMEL_OBJECT (folder), "message_changed", g_strdup (new[i].uid)); } camel_folder_summary_info_free(folder->summary, info); g_free (new[i].uid); } /* Remove any leftover cached summary messages. */ for (j = i + 1; j < summary_len; j++) { seq = j - removed->len; g_array_append_val (removed, seq); } /* Free remaining memory. */ while (i < exists) g_free (new[i++].uid); g_free (new); /* And finally update the summary. */ camel_imap_folder_changed (folder, exists, removed, ex); g_array_free (removed, TRUE); camel_operation_end(NULL); } /* Find all messages in @folder with flags matching @flags and @mask. * If no messages match, returns %NULL. Otherwise, returns an array of * CamelMessageInfo and sets *@set to a message set corresponding the * UIDs of the matched messages. The caller must free the infos, the * array, and the set string. */ static GPtrArray * get_matching (CamelFolder *folder, guint32 flags, guint32 mask, char **set) { GPtrArray *matches; CamelMessageInfo *info; int i, max, range; GString *gset; matches = g_ptr_array_new (); gset = g_string_new (""); max = camel_folder_summary_count (folder->summary); range = -1; for (i = 0; i < max; i++) { info = camel_folder_summary_index (folder->summary, i); if (!info) continue; if ((info->flags & mask) != flags) { camel_folder_summary_info_free (folder->summary, info); if (range != -1) { if (range != i - 1) { info = matches->pdata[matches->len - 1]; g_string_sprintfa (gset, ":%s", camel_message_info_uid (info)); } range = -1; } continue; } g_ptr_array_add (matches, info); if (range != -1) continue; range = i; if (gset->len) g_string_append_c (gset, ','); g_string_sprintfa (gset, "%s", camel_message_info_uid (info)); } if (range != -1 && range != max - 1) { info = matches->pdata[matches->len - 1]; g_string_sprintfa (gset, ":%s", camel_message_info_uid (info)); } if (matches->len) { *set = gset->str; g_string_free (gset, FALSE); return matches; } else { g_string_free (gset, TRUE); g_ptr_array_free (matches, TRUE); return NULL; } } static void imap_sync (CamelFolder *folder, gboolean expunge, CamelException *ex) { CamelImapStore *store = CAMEL_IMAP_STORE (folder->parent_store); CamelImapResponse *response; CamelMessageInfo *info; GPtrArray *matches; char *set, *flaglist; int i, j, max; max = camel_folder_summary_count (folder->summary); /* If we're expunging then we don't need to be precise about the * flags of deleted messages. Just add \Deleted to anything that * should have it. */ if (expunge && (matches = get_matching (folder, CAMEL_MESSAGE_DELETED, CAMEL_MESSAGE_DELETED, &set))) { for (i = 0; i < matches->len; i++) { info = matches->pdata[i]; info->flags &= ~CAMEL_MESSAGE_FOLDER_FLAGGED; camel_folder_summary_info_free (folder->summary, info); } g_ptr_array_free (matches, TRUE); camel_folder_summary_touch (folder->summary); CAMEL_IMAP_STORE_LOCK (store, command_lock); response = camel_imap_command (store, folder, ex, "UID STORE %s +FLAGS.SILENT \\Deleted", set); CAMEL_IMAP_STORE_UNLOCK (store, command_lock); g_free (set); if (response) camel_imap_response_free (response); if (camel_exception_is_set (ex)) return; } /* OK, now, find a message with changed flags, find all of the * other messages like it, sync them as a group, mark them as * updated, and continue. */ for (i = 0; i < max; i++) { info = camel_folder_summary_index (folder->summary, i); if (!info) continue; if (!(info->flags & CAMEL_MESSAGE_FOLDER_FLAGGED)) { camel_folder_summary_info_free (folder->summary, info); continue; } flaglist = imap_create_flag_list (info->flags); matches = get_matching (folder, info->flags & (CAMEL_IMAP_SERVER_FLAGS | CAMEL_MESSAGE_FOLDER_FLAGGED), CAMEL_IMAP_SERVER_FLAGS | CAMEL_MESSAGE_FOLDER_FLAGGED, &set); camel_folder_summary_info_free (folder->summary, info); CAMEL_IMAP_STORE_LOCK (store, command_lock); response = camel_imap_command (store, folder, ex, "UID STORE %s FLAGS.SILENT %s", set, flaglist); CAMEL_IMAP_STORE_UNLOCK (store, command_lock); g_free (set); g_free (flaglist); if (response) camel_imap_response_free (response); if (!camel_exception_is_set (ex)) { for (j = 0; j < matches->len; j++) { info = matches->pdata[j]; info->flags &= ~CAMEL_MESSAGE_FOLDER_FLAGGED; ((CamelImapMessageInfo*)info)->server_flags = info->flags & CAMEL_IMAP_SERVER_FLAGS; } camel_folder_summary_touch (folder->summary); } for (j = 0; j < matches->len; j++) { info = matches->pdata[j]; camel_folder_summary_info_free (folder->summary, info); } g_ptr_array_free (matches, TRUE); if (camel_exception_is_set (ex)) return; } if (expunge) { CAMEL_IMAP_STORE_LOCK(store, command_lock); response = camel_imap_command (store, folder, ex, "EXPUNGE"); CAMEL_IMAP_STORE_UNLOCK(store, command_lock); camel_imap_response_free (response); } camel_folder_summary_save (folder->summary); camel_operation_end(NULL); } static void imap_expunge (CamelFolder *folder, CamelException *ex) { imap_sync (folder, TRUE, ex); } static const char * imap_get_full_name (CamelFolder *folder) { CamelURL *url = ((CamelService *)folder->parent_store)->url; int len; if (!url->path || !*url->path || !strcmp (url->path, "/")) return folder->full_name; len = strlen (url->path + 1); if (!strncmp (url->path + 1, folder->full_name, len) && strlen (folder->full_name) > len + 1) return folder->full_name + len + 1; return folder->full_name; } static void imap_append_message (CamelFolder *folder, CamelMimeMessage *message, const CamelMessageInfo *info, CamelException *ex) { CamelImapStore *store = CAMEL_IMAP_STORE (folder->parent_store); CamelImapResponse *response; CamelStream *memstream; CamelMimeFilter *crlf_filter; CamelStreamFilter *streamfilter; GByteArray *ba; char *flagstr, *result; /* create flag string param */ if (info && info->flags) flagstr = imap_create_flag_list (info->flags); else flagstr = NULL; /* FIXME: We could avoid this if we knew how big the message was. */ memstream = camel_stream_mem_new (); ba = g_byte_array_new (); camel_stream_mem_set_byte_array (CAMEL_STREAM_MEM (memstream), ba); streamfilter = camel_stream_filter_new_with_stream (memstream); crlf_filter = camel_mime_filter_crlf_new ( CAMEL_MIME_FILTER_CRLF_ENCODE, CAMEL_MIME_FILTER_CRLF_MODE_CRLF_ONLY); camel_stream_filter_add (streamfilter, crlf_filter); camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (message), CAMEL_STREAM (streamfilter)); camel_object_unref (CAMEL_OBJECT (streamfilter)); camel_object_unref (CAMEL_OBJECT (crlf_filter)); camel_object_unref (CAMEL_OBJECT (memstream)); CAMEL_IMAP_STORE_LOCK(store, command_lock); response = camel_imap_command (store, NULL, ex, "APPEND %S%s%s {%d}", folder->full_name, flagstr ? " " : "", flagstr ? flagstr : "", ba->len); g_free (flagstr); if (!response) { g_byte_array_free (ba, TRUE); CAMEL_IMAP_STORE_UNLOCK(store, command_lock); return; } result = camel_imap_response_extract_continuation (response, ex); if (!result) { g_byte_array_free (ba, TRUE); CAMEL_IMAP_STORE_UNLOCK(store, command_lock); return; } g_free (result); /* send the rest of our data - the mime message */ g_byte_array_append (ba, "\0", 3); response = camel_imap_command_continuation (store, ex, ba->data); g_byte_array_free (ba, TRUE); CAMEL_IMAP_STORE_UNLOCK(store, command_lock); if (!response) return; camel_imap_response_free (response); } static void imap_copy_message_to (CamelFolder *source, const char *uid, CamelFolder *destination, CamelException *ex) { CamelImapStore *store = CAMEL_IMAP_STORE (source->parent_store); CamelImapResponse *response; CamelMessageInfo *mi; mi = camel_folder_summary_uid (source->summary, uid); g_return_if_fail (mi != NULL); /* Sync message flags if needed. */ if (mi->flags & CAMEL_MESSAGE_FOLDER_FLAGGED) { char *flaglist; flaglist = imap_create_flag_list (mi->flags); CAMEL_IMAP_STORE_LOCK (store, command_lock); response = camel_imap_command (store, source, ex, "UID STORE %s FLAGS.SILENT %s", camel_message_info_uid (mi), flaglist); CAMEL_IMAP_STORE_UNLOCK (store, command_lock); g_free (flaglist); if (camel_exception_is_set (ex)) { camel_folder_summary_info_free (source->summary, mi); return; } camel_imap_response_free (response); mi->flags &= ~CAMEL_MESSAGE_FOLDER_FLAGGED; ((CamelImapMessageInfo *)mi)->server_flags = mi->flags & CAMEL_IMAP_SERVER_FLAGS; } camel_folder_summary_info_free (source->summary, mi); if (camel_exception_is_set (ex)) return; /* Now copy it */ CAMEL_IMAP_STORE_LOCK(store, command_lock); response = camel_imap_command (store, source, ex, "UID COPY %s %S", uid, destination->full_name); CAMEL_IMAP_STORE_UNLOCK(store, command_lock); if (camel_exception_is_set (ex)) return; camel_imap_response_free (response); /* Force the destination folder to notice its new messages. */ response = camel_imap_command (store, destination, NULL, "NOOP"); camel_imap_response_free (response); } static void imap_move_message_to (CamelFolder *source, const char *uid, CamelFolder *destination, CamelException *ex) { imap_copy_message_to (source, uid, destination, ex); if (camel_exception_is_set (ex)) return; camel_folder_delete_message (source, uid); } static GPtrArray * imap_search_by_expression (CamelFolder *folder, const char *expression, CamelException *ex) { CamelImapFolder *imap_folder = CAMEL_IMAP_FOLDER (folder); GPtrArray *matches, *summary; /* we could get around this by creating a new search object each time, but i doubt its worth it since any long operation would lock the command channel too */ CAMEL_IMAP_FOLDER_LOCK(folder, search_lock); if (!imap_folder->search) imap_folder->search = camel_imap_search_new (); camel_folder_search_set_folder (imap_folder->search, folder); summary = camel_folder_get_summary(folder); camel_folder_search_set_summary(imap_folder->search, summary); matches = camel_folder_search_execute_expression (imap_folder->search, expression, ex); CAMEL_IMAP_FOLDER_UNLOCK(folder, search_lock); camel_folder_free_summary(folder, summary); return matches; } static void imap_search_free (CamelFolder *folder, GPtrArray *uids) { CamelImapFolder *imap_folder = CAMEL_IMAP_FOLDER (folder); g_return_if_fail (imap_folder->search); CAMEL_IMAP_FOLDER_LOCK(folder, search_lock); camel_folder_search_free_result (imap_folder->search, uids); CAMEL_IMAP_FOLDER_UNLOCK(folder, search_lock); } /* parse a header response (starting after the first ' ' after * *@headers_p) and construct a content-free CamelMedium from it. */ static CamelMedium * parse_headers (char **headers_p, CamelType medium_type) { CamelMedium *medium; CamelStream *stream; char *headers; int len; *headers_p = strchr (*headers_p, ' '); if (!*headers_p) return FALSE; (*headers_p)++; headers = imap_parse_nstring (headers_p, &len); if (!headers) return FALSE; stream = camel_stream_mem_new_with_buffer (headers, len); g_free (headers); medium = CAMEL_MEDIUM (camel_object_new (medium_type)); camel_data_wrapper_construct_from_stream (CAMEL_DATA_WRAPPER (medium), stream); camel_object_unref (CAMEL_OBJECT (stream)); return medium; } static CamelMedium * fetch_medium (CamelFolder *folder, const char *uid, const char *section_text, CamelType type, CamelException *ex) { CamelImapStore *store = CAMEL_IMAP_STORE (folder->parent_store); CamelImapResponse *response; CamelMedium *medium; char *result, *p; CAMEL_IMAP_STORE_LOCK (store, command_lock); if (store->server_level < IMAP_LEVEL_IMAP4REV1 && !*section_text) { response = camel_imap_command (store, folder, ex, "UID FETCH %s RFC822.PEEK", uid); } else { response = camel_imap_command (store, folder, ex, "UID FETCH %s BODY.PEEK[%s]", uid, section_text); } CAMEL_IMAP_STORE_UNLOCK (store, command_lock); if (!response) return NULL; /* FIXME: there could be multiple lines of FETCH response. */ result = camel_imap_response_extract (response, "FETCH", ex); if (!result) return NULL; if (store->server_level < IMAP_LEVEL_IMAP4REV1 && !*section_text) p = e_strstrcase (result, "RFC822"); else p = e_strstrcase (result, "BODY"); if (p) medium = parse_headers (&p, type); else { camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE, _("Could not find message body in FETCH " "response.")); medium = NULL; } g_free (result); return medium; } static CamelMimeMessage *get_message (CamelFolder *folder, const char *uid, const char *part_specifier, CamelMessageContentInfo *ci, CamelException *ex); /* Fetch the contents of the MIME part indicated by @ci, which is part * of message @uid in @folder. */ static CamelDataWrapper * get_content (CamelFolder *folder, const char *uid, const char *part_spec, CamelMimePart *part, CamelMessageContentInfo *ci, CamelException *ex) { char *child_spec; /* There are three cases: multipart, message/rfc822, and "other" */ if (header_content_type_is (ci->type, "multipart", "*")) { CamelMultipart *body_mp; CamelDataWrapper *content; int speclen, num; body_mp = camel_multipart_new (); camel_data_wrapper_set_mime_type_field ( CAMEL_DATA_WRAPPER (body_mp), ci->type); camel_multipart_set_boundary (body_mp, NULL); speclen = strlen (part_spec); child_spec = g_malloc (speclen + 15); memcpy (child_spec, part_spec, speclen); if (speclen > 0) child_spec[speclen++] = '.'; ci = ci->childs; num = 1; while (ci) { sprintf (child_spec + speclen, "%d.MIME", num++); part = (CamelMimePart *)fetch_medium (folder, uid, child_spec, CAMEL_MIME_PART_TYPE, ex); *(strchr (child_spec + speclen, '.')) = '\0'; if (part) content = get_content (folder, uid, child_spec, part, ci, ex); if (!part || !content) { g_free (child_spec); camel_object_unref (CAMEL_OBJECT (part)); camel_object_unref (CAMEL_OBJECT (body_mp)); return NULL; } camel_medium_set_content_object (CAMEL_MEDIUM (part), content); camel_object_unref (CAMEL_OBJECT (content)); camel_multipart_add_part (body_mp, part); camel_object_unref (CAMEL_OBJECT (part)); ci = ci->next; } g_free (child_spec); return (CamelDataWrapper *)body_mp; } else if (header_content_type_is (ci->type, "message", "rfc822")) { return (CamelDataWrapper *) get_message (folder, uid, part_spec, ci->childs, ex); } else { CamelDataWrapper *content; if (!ci->parent || header_content_type_is (ci->parent->type, "message", "rfc822")) child_spec = g_strdup_printf ("%s%s1", part_spec, *part_spec ? "." : ""); else child_spec = g_strdup (part_spec); content = camel_imap_wrapper_new (folder, ci->type, uid, child_spec, part); g_free (child_spec); return content; } } static CamelMimeMessage * get_message (CamelFolder *folder, const char *uid, const char *part_spec, CamelMessageContentInfo *ci, CamelException *ex) { CamelImapStore *store = CAMEL_IMAP_STORE (folder->parent_store); CamelDataWrapper *content; CamelMimeMessage *msg; char *section_text; section_text = g_strdup_printf ("%s%s%s", part_spec, *part_spec ? "." : "", store->server_level >= IMAP_LEVEL_IMAP4REV1 ? "HEADER" : "0"); msg = (CamelMimeMessage *)fetch_medium (folder, uid, section_text, CAMEL_MIME_MESSAGE_TYPE, ex); g_free (section_text); if (!msg) return NULL; content = get_content (folder, uid, part_spec, CAMEL_MIME_PART (msg), ci, ex); if (!content) { camel_object_unref (CAMEL_OBJECT (msg)); return NULL; } camel_medium_set_content_object (CAMEL_MEDIUM (msg), content); camel_object_unref (CAMEL_OBJECT (content)); return msg; } /* FIXME: I pulled this number out of my butt. */ #define IMAP_SMALL_BODY_SIZE 5120 static CamelMimeMessage * imap_get_message (CamelFolder *folder, const char *uid, CamelException *ex) { CamelMessageInfo *mi; CamelMimeMessage *msg; mi = camel_folder_summary_uid (folder->summary, uid); g_return_val_if_fail (mi != NULL, NULL); /* Fetch small messages directly. */ if (mi->size < IMAP_SMALL_BODY_SIZE) { camel_folder_summary_info_free (folder->summary, mi); return (CamelMimeMessage *)fetch_medium (folder, uid, "", CAMEL_MIME_MESSAGE_TYPE, ex); } /* For larger messages, fetch the structure and build a message * with offline parts. (We check mi->content->type rather than * mi->content because camel_folder_summary_info_new always creates * an empty content struct.) */ if (!mi->content->type) { CamelImapStore *store = CAMEL_IMAP_STORE (folder->parent_store); CamelImapResponse *response; char *result, *p; CAMEL_IMAP_STORE_LOCK (store, command_lock); response = camel_imap_command (store, folder, ex, "UID FETCH %s BODY", uid); CAMEL_IMAP_STORE_UNLOCK (store, command_lock); if (!response) { camel_folder_summary_info_free (folder->summary, mi); return NULL; } /* FIXME, wrong */ result = camel_imap_response_extract (response, "FETCH", ex); if (!result) { camel_folder_summary_info_free (folder->summary, mi); return NULL; } p = e_strstrcase (result, "BODY "); if (p) { p += 5; imap_parse_body (&p, folder, mi->content); } g_free (result); if (!mi->content->type) { camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE, _("Could not find message body in FETCH response.")); camel_folder_summary_info_free (folder->summary, mi); return NULL; } } msg = get_message (folder, uid, "", mi->content, ex); camel_folder_summary_info_free (folder->summary, mi); return msg; } static const char * imap_protocol_get_summary_specifier (CamelImapStore *store) { if (store->server_level >= IMAP_LEVEL_IMAP4REV1) return "UID FLAGS RFC822.SIZE BODY.PEEK[HEADER]"; else return "UID FLAGS RFC822.SIZE RFC822.HEADER"; } static void imap_update_summary (CamelFolder *folder, int first, int last, CamelFolderChangeInfo *changes, CamelException *ex) { CamelImapStore *store = CAMEL_IMAP_STORE (folder->parent_store); CamelImapResponse *response; GPtrArray *headers, *messages; const char *summary_specifier; char *p, *uid; int i, seq, count; CamelMimeMessage *msg; CamelMessageInfo *mi; guint32 flags, size; summary_specifier = imap_protocol_get_summary_specifier (store); /* We already have the command lock */ if (first == last) { response = camel_imap_command (store, folder, ex, "FETCH %d (%s)", first, summary_specifier); } else { response = camel_imap_command (store, folder, ex, "FETCH %d:%d (%s)", first, last, summary_specifier); } if (!response) return; count = camel_folder_summary_count (folder->summary); messages = g_ptr_array_new (); g_ptr_array_set_size (messages, last - first + 1); headers = response->untagged; for (i = 0; i < headers->len; i++) { p = headers->pdata[i]; if (*p++ != '*' || *p++ != ' ') continue; seq = strtoul (p, &p, 10); if (!seq || seq < count) continue; if (g_strncasecmp (p, " FETCH (", 8) != 0) continue; p += 8; mi = messages->pdata[seq - first]; flags = size = 0; uid = NULL; while (p && *p != ')') { if (*p == ' ') p++; if (!g_strncasecmp (p, "FLAGS ", 6)) { p += 6; /* FIXME user flags */ flags = imap_parse_flag_list (&p); } else if (!g_strncasecmp (p, "RFC822.SIZE ", 12)) { size = strtoul (p + 12, &p, 10); } else if (!g_strncasecmp (p, "UID ", 4)) { uid = p + 4; strtoul (uid, &p, 10); uid = g_strndup (uid, p - uid); } else if (!g_strncasecmp (p, "BODY[HEADER", 11) || !g_strncasecmp (p, "RFC822.HEADER", 13)) { msg = (CamelMimeMessage *) parse_headers (&p, CAMEL_MIME_MESSAGE_TYPE); mi = camel_folder_summary_info_new_from_message (folder->summary, msg); camel_object_unref (CAMEL_OBJECT (msg)); } else { g_warning ("Waiter, I did not order this %.*s", (int)strcspn (p, " \n"), p); p = NULL; } } /* Ideally we got everything on one line, but if we * we didn't, and we didn't get the body yet, then we * have to postpone this line for later. */ if (mi == NULL) { p = headers->pdata[i]; g_ptr_array_remove_index (headers, i); g_ptr_array_add (headers, p); continue; } messages->pdata[seq - first] = mi; if (uid) camel_message_info_set_uid (mi, uid); if (flags) mi->flags = flags; if (size) mi->size = size; } camel_imap_response_free (response); for (i = 0; i < messages->len; i++) { mi = messages->pdata[i]; camel_folder_summary_add (folder->summary, mi); camel_folder_change_info_add_uid (changes, camel_message_info_uid (mi)); } g_ptr_array_free (messages, TRUE); } /* Called with the store's command_lock locked */ void camel_imap_folder_changed (CamelFolder *folder, int exists, GArray *expunged, CamelException *ex) { CamelFolderChangeInfo *changes; CamelMessageInfo *info; int len; changes = camel_folder_change_info_new (); if (expunged) { int i, id; for (i = 0; i < expunged->len; i++) { id = g_array_index (expunged, int, i); info = camel_folder_summary_index (folder->summary, id - 1); camel_folder_change_info_remove_uid (changes, camel_message_info_uid (info)); camel_folder_summary_remove (folder->summary, info); camel_folder_summary_info_free(folder->summary, info); } } len = camel_folder_summary_count (folder->summary); if (exists > len) imap_update_summary (folder, len + 1, exists, changes, ex); if (camel_folder_change_info_changed (changes)) { camel_object_trigger_event (CAMEL_OBJECT (folder), "folder_changed", changes); } camel_folder_change_info_free (changes); }