/* message.cc - Results of message-based searches from a notmuch database * * Copyright © 2009 Carl Worth * * 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 3 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, see https://www.gnu.org/licenses/ . * * Author: Carl Worth */ #include "notmuch-private.h" #include "database-private.h" #include "message-private.h" #include #include struct _notmuch_message { notmuch_database_t *notmuch; Xapian::docid doc_id; int frozen; char *message_id; char *thread_id; size_t thread_depth; char *in_reply_to; notmuch_string_list_t *tag_list; notmuch_string_list_t *filename_term_list; notmuch_string_list_t *filename_list; char *maildir_flags; char *author; notmuch_message_file_t *message_file; notmuch_string_list_t *property_term_list; notmuch_string_map_t *property_map; notmuch_string_list_t *reference_list; notmuch_message_list_t *replies; unsigned long flags; /* For flags that are initialized on-demand, lazy_flags indicates * if each flag has been initialized. */ unsigned long lazy_flags; /* Message document modified since last sync */ bool modified; /* last view of database the struct is synced with */ unsigned long last_view; Xapian::Document doc; Xapian::termcount termpos; }; #define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr[0])) struct maildir_flag_tag { char flag; const char *tag; bool inverse; }; /* ASCII ordered table of Maildir flags and associated tags */ static const struct maildir_flag_tag flag2tag[] = { { 'D', "draft", false }, { 'F', "flagged", false }, { 'P', "passed", false }, { 'R', "replied", false }, { 'S', "unread", true } }; /* We end up having to call the destructor explicitly because we had * to use "placement new" in order to initialize C++ objects within a * block that we allocated with talloc. So C++ is making talloc * slightly less simple to use, (we wouldn't need * talloc_set_destructor at all otherwise). */ static int _notmuch_message_destructor (notmuch_message_t *message) { message->doc.~Document (); return 0; } #define LOG_XAPIAN_EXCEPTION(message, error) _log_xapian_exception (__location__, message, error) static void _log_xapian_exception (const char *where, notmuch_message_t *message, const Xapian::Error error) { notmuch_database_t *notmuch = notmuch_message_get_database (message); _notmuch_database_log (notmuch, "A Xapian exception occurred at %s: %s\n", where, error.get_msg ().c_str ()); notmuch->exception_reported = true; } static notmuch_message_t * _notmuch_message_create_for_document (const void *talloc_owner, notmuch_database_t *notmuch, unsigned int doc_id, Xapian::Document doc, notmuch_private_status_t *status) { notmuch_message_t *message; if (status) *status = NOTMUCH_PRIVATE_STATUS_SUCCESS; message = talloc (talloc_owner, notmuch_message_t); if (unlikely (message == NULL)) { if (status) *status = NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY; return NULL; } message->notmuch = notmuch; message->doc_id = doc_id; message->frozen = 0; message->flags = 0; message->lazy_flags = 0; /* the message is initially not synchronized with Xapian */ message->last_view = 0; /* Calculated after the thread structure is computed */ message->thread_depth = 0; /* Each of these will be lazily created as needed. */ message->message_id = NULL; message->thread_id = NULL; message->in_reply_to = NULL; message->tag_list = NULL; message->filename_term_list = NULL; message->filename_list = NULL; message->maildir_flags = NULL; message->message_file = NULL; message->author = NULL; message->property_term_list = NULL; message->property_map = NULL; message->reference_list = NULL; message->replies = _notmuch_message_list_create (message); if (unlikely (message->replies == NULL)) { if (status) *status = NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY; return NULL; } /* This is C++'s creepy "placement new", which is really just an * ugly way to call a constructor for a pre-allocated object. So * it's really not an error to not be checking for OUT_OF_MEMORY * here, since this "new" isn't actually allocating memory. This * is language-design comedy of the wrong kind. */ new (&message->doc) Xapian::Document; talloc_set_destructor (message, _notmuch_message_destructor); message->doc = doc; message->termpos = 0; message->modified = false; return message; } /* Create a new notmuch_message_t object for an existing document in * the database. * * Here, 'talloc owner' is an optional talloc context to which the new * message will belong. This allows for the caller to not bother * calling notmuch_message_destroy on the message, and know that all * memory will be reclaimed when 'talloc_owner' is freed. The caller * still can call notmuch_message_destroy when finished with the * message if desired. * * The 'talloc_owner' argument can also be NULL, in which case the * caller *is* responsible for calling notmuch_message_destroy. * * If no document exists in the database with document ID of 'doc_id' * then this function returns NULL and optionally sets *status to * NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND. * * This function can also fail to due lack of available memory, * returning NULL and optionally setting *status to * NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY. * * The caller can pass NULL for status if uninterested in * distinguishing these two cases. */ notmuch_message_t * _notmuch_message_create (const void *talloc_owner, notmuch_database_t *notmuch, unsigned int doc_id, notmuch_private_status_t *status) { Xapian::Document doc; try { doc = notmuch->xapian_db->get_document (doc_id); } catch (const Xapian::DocNotFoundError &error) { if (status) *status = NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND; return NULL; } return _notmuch_message_create_for_document (talloc_owner, notmuch, doc_id, doc, status); } /* Create a new notmuch_message_t object for a specific message ID, * (which may or may not already exist in the database). * * The 'notmuch' database will be the talloc owner of the returned * message. * * This function returns a valid notmuch_message_t whether or not * there is already a document in the database with the given message * ID. These two cases can be distinguished by the value of *status: * * * NOTMUCH_PRIVATE_STATUS_SUCCESS: * * There is already a document with message ID 'message_id' in the * database. The returned message can be used to query/modify the * document. The message may be a ghost message. * * NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND: * * No document with 'message_id' exists in the database. The * returned message contains a newly created document (not yet * added to the database) and a document ID that is known not to * exist in the database. This message is "blank"; that is, it * contains only a message ID and no other metadata. The caller * can modify the message, and a call to _notmuch_message_sync * will add the document to the database. * * If an error occurs, this function will return NULL and *status * will be set as appropriate. (The status pointer argument must * not be NULL.) */ notmuch_message_t * _notmuch_message_create_for_message_id (notmuch_database_t *notmuch, const char *message_id, notmuch_private_status_t *status_ret) { notmuch_message_t *message; Xapian::Document doc; unsigned int doc_id; char *term; *status_ret = (notmuch_private_status_t) notmuch_database_find_message (notmuch, message_id, &message); if (message) return talloc_steal (notmuch, message); else if (*status_ret) return NULL; /* If the message ID is too long, substitute its sha1 instead. */ if (strlen (message_id) > NOTMUCH_MESSAGE_ID_MAX) message_id = _notmuch_message_id_compressed (message, message_id); term = talloc_asprintf (NULL, "%s%s", _find_prefix ("id"), message_id); if (term == NULL) { *status_ret = NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY; return NULL; } if (_notmuch_database_mode (notmuch) == NOTMUCH_DATABASE_MODE_READ_ONLY) INTERNAL_ERROR ("Failure to ensure database is writable."); try { doc.add_term (term, 0); talloc_free (term); doc.add_value (NOTMUCH_VALUE_MESSAGE_ID, message_id); doc_id = _notmuch_database_generate_doc_id (notmuch); } catch (const Xapian::Error &error) { _notmuch_database_log (notmuch, "A Xapian exception occurred creating message: %s\n", error.get_msg ().c_str ()); notmuch->exception_reported = true; *status_ret = NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION; return NULL; } message = _notmuch_message_create_for_document (notmuch, notmuch, doc_id, doc, status_ret); /* We want to inform the caller that we had to create a new * document. */ if (*status_ret == NOTMUCH_PRIVATE_STATUS_SUCCESS) *status_ret = NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND; return message; } static char * _notmuch_message_get_term (notmuch_message_t *message, Xapian::TermIterator &i, Xapian::TermIterator &end, const char *prefix) { int prefix_len = strlen (prefix); char *value; i.skip_to (prefix); if (i == end) return NULL; const std::string &term = *i; if (strncmp (term.c_str (), prefix, prefix_len)) return NULL; value = talloc_strdup (message, term.c_str () + prefix_len); #if DEBUG_DATABASE_SANITY i++; if (i != end && strncmp ((*i).c_str (), prefix, prefix_len) == 0) { INTERNAL_ERROR ("Mail (doc_id: %d) has duplicate %s terms: %s and %s\n", message->doc_id, prefix, value, (*i).c_str () + prefix_len); } #endif return value; } /* * For special applications where we only want the thread id, reading * in all metadata is a heavy I/O penalty. */ const char * _notmuch_message_get_thread_id_only (notmuch_message_t *message) { Xapian::TermIterator i = message->doc.termlist_begin (); Xapian::TermIterator end = message->doc.termlist_end (); message->thread_id = _notmuch_message_get_term (message, i, end, _find_prefix ("thread")); return message->thread_id; } static void _notmuch_message_ensure_metadata (notmuch_message_t *message, void *field) { Xapian::TermIterator i, end; if (field && (message->last_view >= message->notmuch->view)) return; const char *thread_prefix = _find_prefix ("thread"), *tag_prefix = _find_prefix ("tag"), *id_prefix = _find_prefix ("id"), *type_prefix = _find_prefix ("type"), *filename_prefix = _find_prefix ("file-direntry"), *property_prefix = _find_prefix ("property"), *reference_prefix = _find_prefix ("reference"), *replyto_prefix = _find_prefix ("replyto"); /* We do this all in a single pass because Xapian decompresses the * term list every time you iterate over it. Thus, while this is * slightly more costly than looking up individual fields if only * one field of the message object is actually used, it's a huge * win as more fields are used. */ for (int count = 0; count < 3; count++) { try { i = message->doc.termlist_begin (); end = message->doc.termlist_end (); /* Get thread */ if (! message->thread_id) message->thread_id = _notmuch_message_get_term (message, i, end, thread_prefix); /* Get tags */ assert (strcmp (thread_prefix, tag_prefix) < 0); if (! message->tag_list) { message->tag_list = _notmuch_database_get_terms_with_prefix (message, i, end, tag_prefix); _notmuch_string_list_sort (message->tag_list); } /* Get id */ assert (strcmp (tag_prefix, id_prefix) < 0); if (! message->message_id) message->message_id = _notmuch_message_get_term (message, i, end, id_prefix); /* Get document type */ assert (strcmp (id_prefix, type_prefix) < 0); if (! NOTMUCH_TEST_BIT (message->lazy_flags, NOTMUCH_MESSAGE_FLAG_GHOST)) { i.skip_to (type_prefix); /* "T" is the prefix "type" fields. See * BOOLEAN_PREFIX_INTERNAL. */ if (*i == "Tmail") NOTMUCH_CLEAR_BIT (&message->flags, NOTMUCH_MESSAGE_FLAG_GHOST); else if (*i == "Tghost") NOTMUCH_SET_BIT (&message->flags, NOTMUCH_MESSAGE_FLAG_GHOST); else INTERNAL_ERROR ("Message without type term"); NOTMUCH_SET_BIT (&message->lazy_flags, NOTMUCH_MESSAGE_FLAG_GHOST); } /* Get filename list. Here we get only the terms. We lazily * expand them to full file names when needed in * _notmuch_message_ensure_filename_list. */ assert (strcmp (type_prefix, filename_prefix) < 0); if (! message->filename_term_list && ! message->filename_list) message->filename_term_list = _notmuch_database_get_terms_with_prefix (message, i, end, filename_prefix); /* Get property terms. Mimic the setup with filenames above */ assert (strcmp (filename_prefix, property_prefix) < 0); if (! message->property_map && ! message->property_term_list) message->property_term_list = _notmuch_database_get_terms_with_prefix (message, i, end, property_prefix); /* get references */ assert (strcmp (property_prefix, reference_prefix) < 0); if (! message->reference_list) { message->reference_list = _notmuch_database_get_terms_with_prefix (message, i, end, reference_prefix); } /* Get reply to */ assert (strcmp (property_prefix, replyto_prefix) < 0); if (! message->in_reply_to) message->in_reply_to = _notmuch_message_get_term (message, i, end, replyto_prefix); /* It's perfectly valid for a message to have no In-Reply-To * header. For these cases, we return an empty string. */ if (! message->in_reply_to) message->in_reply_to = talloc_strdup (message, ""); /* all the way without an exception */ break; } catch (const Xapian::DatabaseModifiedError &error) { notmuch_status_t status = notmuch_database_reopen (message->notmuch, NOTMUCH_DATABASE_MODE_READ_ONLY); if (status != NOTMUCH_STATUS_SUCCESS) INTERNAL_ERROR ("unhandled error from notmuch_database_reopen: %s\n", notmuch_status_to_string (status)); } } message->last_view = message->notmuch->view; } void _notmuch_message_invalidate_metadata (notmuch_message_t *message, const char *prefix_name) { if (strcmp ("thread", prefix_name) == 0) { talloc_free (message->thread_id); message->thread_id = NULL; } if (strcmp ("tag", prefix_name) == 0) { talloc_unlink (message, message->tag_list); message->tag_list = NULL; } if (strcmp ("type", prefix_name) == 0) { NOTMUCH_CLEAR_BIT (&message->flags, NOTMUCH_MESSAGE_FLAG_GHOST); NOTMUCH_CLEAR_BIT (&message->lazy_flags, NOTMUCH_MESSAGE_FLAG_GHOST); } if (strcmp ("file-direntry", prefix_name) == 0) { talloc_free (message->filename_term_list); talloc_free (message->filename_list); message->filename_term_list = message->filename_list = NULL; } if (strcmp ("property", prefix_name) == 0) { if (message->property_term_list) talloc_free (message->property_term_list); message->property_term_list = NULL; if (message->property_map) talloc_unlink (message, message->property_map); message->property_map = NULL; } if (strcmp ("replyto", prefix_name) == 0) { talloc_free (message->in_reply_to); message->in_reply_to = NULL; } } unsigned int _notmuch_message_get_doc_id (notmuch_message_t *message) { return message->doc_id; } const char * notmuch_message_get_message_id (notmuch_message_t *message) { try { _notmuch_message_ensure_metadata (message, message->message_id); } catch (const Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NULL; } if (! message->message_id) INTERNAL_ERROR ("Message with document ID of %u has no message ID.\n", message->doc_id); return message->message_id; } static void _notmuch_message_ensure_message_file (notmuch_message_t *message) { const char *filename; if (message->message_file) return; filename = notmuch_message_get_filename (message); if (unlikely (filename == NULL)) return; message->message_file = _notmuch_message_file_open_ctx ( notmuch_message_get_database (message), message, filename); } const char * notmuch_message_get_header (notmuch_message_t *message, const char *header) { Xapian::valueno slot = Xapian::BAD_VALUENO; /* Fetch header from the appropriate xapian value field if * available */ if (strcasecmp (header, "from") == 0) slot = NOTMUCH_VALUE_FROM; else if (strcasecmp (header, "subject") == 0) slot = NOTMUCH_VALUE_SUBJECT; else if (strcasecmp (header, "message-id") == 0) slot = NOTMUCH_VALUE_MESSAGE_ID; if (slot != Xapian::BAD_VALUENO) { try { std::string value = message->doc.get_value (slot); /* If we have NOTMUCH_FEATURE_FROM_SUBJECT_ID_VALUES, then * empty values indicate empty headers. If we don't, then * it could just mean we didn't record the header. */ if ((message->notmuch->features & NOTMUCH_FEATURE_FROM_SUBJECT_ID_VALUES) || ! value.empty ()) return talloc_strdup (message, value.c_str ()); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NULL; } } /* Otherwise fall back to parsing the file */ _notmuch_message_ensure_message_file (message); if (message->message_file == NULL) return NULL; return _notmuch_message_file_get_header (message->message_file, header); } /* Return the message ID from the In-Reply-To header of 'message'. * * Returns an empty string ("") if 'message' has no In-Reply-To * header. * * Returns NULL if any error occurs. */ const char * _notmuch_message_get_in_reply_to (notmuch_message_t *message) { _notmuch_message_ensure_metadata (message, message->in_reply_to); return message->in_reply_to; } const char * notmuch_message_get_thread_id (notmuch_message_t *message) { try { _notmuch_message_ensure_metadata (message, message->thread_id); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NULL; } if (! message->thread_id) INTERNAL_ERROR ("Message with document ID of %u has no thread ID.\n", message->doc_id); return message->thread_id; } void _notmuch_message_add_reply (notmuch_message_t *message, notmuch_message_t *reply) { _notmuch_message_list_add_message (message->replies, reply); } size_t _notmuch_message_get_thread_depth (notmuch_message_t *message) { return message->thread_depth; } void _notmuch_message_label_depths (notmuch_message_t *message, size_t depth) { message->thread_depth = depth; for (notmuch_messages_t *messages = _notmuch_messages_create (message->replies); notmuch_messages_valid (messages); notmuch_messages_move_to_next (messages)) { notmuch_message_t *child = notmuch_messages_get (messages); _notmuch_message_label_depths (child, depth + 1); } } const notmuch_string_list_t * _notmuch_message_get_references (notmuch_message_t *message) { _notmuch_message_ensure_metadata (message, message->reference_list); return message->reference_list; } static int _cmpmsg (const void *pa, const void *pb) { notmuch_message_t **a = (notmuch_message_t **) pa; notmuch_message_t **b = (notmuch_message_t **) pb; time_t time_a = notmuch_message_get_date (*a); time_t time_b = notmuch_message_get_date (*b); if (time_a == time_b) return 0; else if (time_a < time_b) return -1; else return 1; } notmuch_message_list_t * _notmuch_message_sort_subtrees (void *ctx, notmuch_message_list_t *list) { size_t count = 0; size_t capacity = 16; if (! list) return list; void *local = talloc_new (NULL); notmuch_message_list_t *new_list = _notmuch_message_list_create (ctx); notmuch_message_t **message_array = talloc_zero_array (local, notmuch_message_t *, capacity); for (notmuch_messages_t *messages = _notmuch_messages_create (list); notmuch_messages_valid (messages); notmuch_messages_move_to_next (messages)) { notmuch_message_t *root = notmuch_messages_get (messages); if (count >= capacity) { capacity *= 2; message_array = talloc_realloc (local, message_array, notmuch_message_t *, capacity); } message_array[count++] = root; root->replies = _notmuch_message_sort_subtrees (root, root->replies); } qsort (message_array, count, sizeof (notmuch_message_t *), _cmpmsg); for (size_t i = 0; i < count; i++) { _notmuch_message_list_add_message (new_list, message_array[i]); } talloc_free (local); talloc_free (list); return new_list; } notmuch_messages_t * notmuch_message_get_replies (notmuch_message_t *message) { return _notmuch_messages_create (message->replies); } void _notmuch_message_remove_terms (notmuch_message_t *message, const char *prefix) { Xapian::TermIterator i; size_t prefix_len = 0; prefix_len = strlen (prefix); while (1) { i = message->doc.termlist_begin (); i.skip_to (prefix); /* Terminate loop when no terms remain with desired prefix. */ if (i == message->doc.termlist_end () || strncmp ((*i).c_str (), prefix, prefix_len)) break; try { message->doc.remove_term ((*i)); message->modified = true; } catch (const Xapian::InvalidArgumentError) { /* Ignore failure to remove non-existent term. */ } } } /* Remove all terms generated by indexing, i.e. not tags or * properties, along with any automatic tags*/ /* According to Xapian API docs, none of these calls throw * exceptions */ static notmuch_private_status_t _notmuch_message_remove_indexed_terms (notmuch_message_t *message) { Xapian::TermIterator i; const std::string id_prefix = _find_prefix ("id"), property_prefix = _find_prefix ("property"), tag_prefix = _find_prefix ("tag"), type_prefix = _find_prefix ("type"); /* Make sure we have the data to restore to Xapian*/ _notmuch_message_ensure_metadata (message, NULL); /* Empirically, it turns out to be faster to remove all the terms, * and add back the ones we want. */ message->doc.clear_terms (); message->modified = true; /* still a mail message */ message->doc.add_term (type_prefix + "mail"); /* Put back message-id */ message->doc.add_term (id_prefix + message->message_id); /* Put back non-automatic tags */ for (notmuch_tags_t *tags = notmuch_message_get_tags (message); notmuch_tags_valid (tags); notmuch_tags_move_to_next (tags)) { const char *tag = notmuch_tags_get (tags); if (strcmp (tag, "encrypted") != 0 && strcmp (tag, "signed") != 0 && strcmp (tag, "attachment") != 0) { std::string term = tag_prefix + tag; message->doc.add_term (term); } } /* Put back properties */ notmuch_message_properties_t *list; for (list = notmuch_message_get_properties (message, "", false); notmuch_message_properties_valid (list); notmuch_message_properties_move_to_next (list)) { std::string term = property_prefix + notmuch_message_properties_key (list) + "=" + notmuch_message_properties_value (list); message->doc.add_term (term); } notmuch_message_properties_destroy (list); return NOTMUCH_PRIVATE_STATUS_SUCCESS; } /* Return true if p points at "new" or "cur". */ static bool is_maildir (const char *p) { return strcmp (p, "cur") == 0 || strcmp (p, "new") == 0; } /* Add "folder:" term for directory. */ static notmuch_status_t _notmuch_message_add_folder_terms (notmuch_message_t *message, const char *directory) { char *folder, *last; folder = talloc_strdup (NULL, directory); if (! folder) return NOTMUCH_STATUS_OUT_OF_MEMORY; /* * If the message file is in a leaf directory named "new" or * "cur", presume maildir and index the parent directory. Thus a * "folder:" prefix search matches messages in the specified * maildir folder, i.e. in the specified directory and its "new" * and "cur" subdirectories. * * Note that this means the "folder:" prefix can't be used for * distinguishing between message files in "new" or "cur". The * "path:" prefix needs to be used for that. * * Note the deliberate difference to _filename_is_in_maildir(). We * don't want to index different things depending on the existence * or non-existence of all maildir sibling directories "new", * "cur", and "tmp". Doing so would be surprising, and difficult * for the user to fix in case all subdirectories were not in * place during indexing. */ last = strrchr (folder, '/'); if (last) { if (is_maildir (last + 1)) *last = '\0'; } else if (is_maildir (folder)) { *folder = '\0'; } _notmuch_message_add_term (message, "folder", folder); talloc_free (folder); message->modified = true; return NOTMUCH_STATUS_SUCCESS; } #define RECURSIVE_SUFFIX "/**" /* Add "path:" terms for directory. */ static notmuch_status_t _notmuch_message_add_path_terms (notmuch_message_t *message, const char *directory) { /* Add exact "path:" term. */ _notmuch_message_add_term (message, "path", directory); if (strlen (directory)) { char *path, *p; path = talloc_asprintf (NULL, "%s%s", directory, RECURSIVE_SUFFIX); if (! path) return NOTMUCH_STATUS_OUT_OF_MEMORY; /* Add recursive "path:" terms for directory and all parents. */ for (p = path + strlen (path) - 1; p > path; p--) { if (*p == '/') { strcpy (p, RECURSIVE_SUFFIX); _notmuch_message_add_term (message, "path", path); } } talloc_free (path); } /* Recursive all-matching path:** for consistency. */ _notmuch_message_add_term (message, "path", "**"); return NOTMUCH_STATUS_SUCCESS; } /* Add directory based terms for all filenames of the message. */ static notmuch_status_t _notmuch_message_add_directory_terms (void *ctx, notmuch_message_t *message) { const char *direntry_prefix = _find_prefix ("file-direntry"); int direntry_prefix_len = strlen (direntry_prefix); Xapian::TermIterator i = message->doc.termlist_begin (); notmuch_status_t status = NOTMUCH_STATUS_SUCCESS; for (i.skip_to (direntry_prefix); i != message->doc.termlist_end (); i++) { unsigned int directory_id; const char *direntry, *directory; char *colon; const std::string &term = *i; /* Terminate loop at first term without desired prefix. */ if (strncmp (term.c_str (), direntry_prefix, direntry_prefix_len)) break; /* Indicate that there are filenames remaining. */ status = NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID; direntry = term.c_str (); direntry += direntry_prefix_len; directory_id = strtol (direntry, &colon, 10); if (colon == NULL || *colon != ':') INTERNAL_ERROR ("malformed direntry"); directory = _notmuch_database_get_directory_path (ctx, message->notmuch, directory_id); _notmuch_message_add_folder_terms (message, directory); _notmuch_message_add_path_terms (message, directory); } return status; } /* Add an additional 'filename' for 'message'. * * This change will not be reflected in the database until the next * call to _notmuch_message_sync. */ notmuch_status_t _notmuch_message_add_filename (notmuch_message_t *message, const char *filename) { const char *relative, *directory; notmuch_status_t status; void *local = talloc_new (message); char *direntry; if (filename == NULL) INTERNAL_ERROR ("Message filename cannot be NULL."); if (! (message->notmuch->features & NOTMUCH_FEATURE_FILE_TERMS) || ! (message->notmuch->features & NOTMUCH_FEATURE_BOOL_FOLDER)) return NOTMUCH_STATUS_UPGRADE_REQUIRED; relative = _notmuch_database_relative_path (message->notmuch, filename); status = _notmuch_database_split_path (local, relative, &directory, NULL); if (status) return status; status = _notmuch_database_filename_to_direntry ( local, message->notmuch, filename, NOTMUCH_FIND_CREATE, &direntry); if (status) return status; /* New file-direntry allows navigating to this message with * notmuch_directory_get_child_files() . */ _notmuch_message_add_term (message, "file-direntry", direntry); _notmuch_message_add_folder_terms (message, directory); _notmuch_message_add_path_terms (message, directory); talloc_free (local); return NOTMUCH_STATUS_SUCCESS; } /* Remove a particular 'filename' from 'message'. * * This change will not be reflected in the database until the next * call to _notmuch_message_sync. * * If this message still has other filenames, returns * NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID. * * Note: This function does not remove a document from the database, * even if the specified filename is the only filename for this * message. For that functionality, see * notmuch_database_remove_message. */ notmuch_status_t _notmuch_message_remove_filename (notmuch_message_t *message, const char *filename) { void *local = talloc_new (message); char *direntry; notmuch_private_status_t private_status; notmuch_status_t status; if (! (message->notmuch->features & NOTMUCH_FEATURE_FILE_TERMS) || ! (message->notmuch->features & NOTMUCH_FEATURE_BOOL_FOLDER)) return NOTMUCH_STATUS_UPGRADE_REQUIRED; status = _notmuch_database_filename_to_direntry ( local, message->notmuch, filename, NOTMUCH_FIND_LOOKUP, &direntry); if (status || ! direntry) return status; /* Unlink this file from its parent directory. */ private_status = _notmuch_message_remove_term (message, "file-direntry", direntry); status = COERCE_STATUS (private_status, "Unexpected error from _notmuch_message_remove_term"); if (status) return status; /* Re-synchronize "folder:" and "path:" terms for this message. */ /* Remove all "folder:" terms. */ _notmuch_message_remove_terms (message, _find_prefix ("folder")); /* Remove all "path:" terms. */ _notmuch_message_remove_terms (message, _find_prefix ("path")); /* Add back terms for all remaining filenames of the message. */ status = _notmuch_message_add_directory_terms (local, message); talloc_free (local); return status; } /* Upgrade the "folder:" prefix from V1 to V2. */ #define FOLDER_PREFIX_V1 "XFOLDER" #define ZFOLDER_PREFIX_V1 "Z" FOLDER_PREFIX_V1 void _notmuch_message_upgrade_folder (notmuch_message_t *message) { /* Remove all old "folder:" terms. */ _notmuch_message_remove_terms (message, FOLDER_PREFIX_V1); /* Remove all old "folder:" stemmed terms. */ _notmuch_message_remove_terms (message, ZFOLDER_PREFIX_V1); /* Add new boolean "folder:" and "path:" terms. */ _notmuch_message_add_directory_terms (message, message); } char * _notmuch_message_talloc_copy_data (notmuch_message_t *message) { return talloc_strdup (message, message->doc.get_data ().c_str ()); } void _notmuch_message_clear_data (notmuch_message_t *message) { message->doc.set_data (""); message->modified = true; } static void _notmuch_message_ensure_filename_list (notmuch_message_t *message) { notmuch_string_node_t *node; if (message->filename_list) return; _notmuch_message_ensure_metadata (message, message->filename_term_list); message->filename_list = _notmuch_string_list_create (message); node = message->filename_term_list->head; if (! node) { /* A message document created by an old version of notmuch * (prior to rename support) will have the filename in the * data of the document rather than as a file-direntry term. * * It would be nice to do the upgrade of the document directly * here, but the database is likely open in read-only mode. */ std::string datastr = message->doc.get_data (); const char *data = datastr.c_str (); if (data == NULL) INTERNAL_ERROR ("message with no filename"); _notmuch_string_list_append (message->filename_list, data); return; } for (; node; node = node->next) { void *local = talloc_new (message); const char *db_path, *directory, *basename, *filename; char *colon, *direntry = NULL; unsigned int directory_id; direntry = node->string; directory_id = strtol (direntry, &colon, 10); if (colon == NULL || *colon != ':') INTERNAL_ERROR ("malformed direntry"); basename = colon + 1; *colon = '\0'; db_path = notmuch_config_get (message->notmuch, NOTMUCH_CONFIG_MAIL_ROOT); directory = _notmuch_database_get_directory_path (local, message->notmuch, directory_id); if (strlen (directory)) filename = talloc_asprintf (message, "%s/%s/%s", db_path, directory, basename); else filename = talloc_asprintf (message, "%s/%s", db_path, basename); _notmuch_string_list_append (message->filename_list, filename); talloc_free (local); } talloc_free (message->filename_term_list); message->filename_term_list = NULL; } const char * notmuch_message_get_filename (notmuch_message_t *message) { try { _notmuch_message_ensure_filename_list (message); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NULL; } if (message->filename_list == NULL) return NULL; if (message->filename_list->head == NULL || message->filename_list->head->string == NULL) { INTERNAL_ERROR ("message with no filename"); } return message->filename_list->head->string; } notmuch_filenames_t * notmuch_message_get_filenames (notmuch_message_t *message) { try { _notmuch_message_ensure_filename_list (message); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NULL; } return _notmuch_filenames_create (message, message->filename_list); } int notmuch_message_count_files (notmuch_message_t *message) { try { _notmuch_message_ensure_filename_list (message); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return -1; } return _notmuch_string_list_length (message->filename_list); } notmuch_status_t notmuch_message_get_flag_st (notmuch_message_t *message, notmuch_message_flag_t flag, notmuch_bool_t *is_set) { if (! is_set) return NOTMUCH_STATUS_NULL_POINTER; try { if (flag == NOTMUCH_MESSAGE_FLAG_GHOST && ! NOTMUCH_TEST_BIT (message->lazy_flags, flag)) _notmuch_message_ensure_metadata (message, NULL); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NOTMUCH_STATUS_XAPIAN_EXCEPTION; } *is_set = NOTMUCH_TEST_BIT (message->flags, flag); return NOTMUCH_STATUS_SUCCESS; } notmuch_bool_t notmuch_message_get_flag (notmuch_message_t *message, notmuch_message_flag_t flag) { notmuch_bool_t is_set; notmuch_status_t status; status = notmuch_message_get_flag_st (message, flag, &is_set); if (status) return FALSE; else return is_set; } void notmuch_message_set_flag (notmuch_message_t *message, notmuch_message_flag_t flag, notmuch_bool_t enable) { if (enable) NOTMUCH_SET_BIT (&message->flags, flag); else NOTMUCH_CLEAR_BIT (&message->flags, flag); NOTMUCH_SET_BIT (&message->lazy_flags, flag); } time_t notmuch_message_get_date (notmuch_message_t *message) { std::string value; try { value = message->doc.get_value (NOTMUCH_VALUE_TIMESTAMP); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return 0; } if (value.empty ()) /* sortable_unserialise is undefined on empty string */ return 0; return Xapian::sortable_unserialise (value); } notmuch_tags_t * notmuch_message_get_tags (notmuch_message_t *message) { notmuch_tags_t *tags; try { _notmuch_message_ensure_metadata (message, message->tag_list); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NULL; } tags = _notmuch_tags_create (message, message->tag_list); /* _notmuch_tags_create steals the reference to the tag_list, but * in this case it's still used by the message, so we add an * *additional* talloc reference to the list. As a result, it's * possible to modify the message tags (which talloc_unlink's the * current list from the message) while still iterating because * the iterator will keep the current list alive. */ if (! talloc_reference (message, message->tag_list)) return NULL; return tags; } const char * _notmuch_message_get_author (notmuch_message_t *message) { return message->author; } void _notmuch_message_set_author (notmuch_message_t *message, const char *author) { if (message->author) talloc_free (message->author); message->author = talloc_strdup (message, author); return; } void _notmuch_message_set_header_values (notmuch_message_t *message, const char *date, const char *from, const char *subject) { time_t time_value; /* GMime really doesn't want to see a NULL date, so protect its * sensibilities. */ if (date == NULL || *date == '\0') { time_value = 0; } else { time_value = g_mime_utils_header_decode_date_unix (date); /* * Workaround for https://bugzilla.gnome.org/show_bug.cgi?id=779923 */ if (time_value < 0) time_value = 0; } message->doc.add_value (NOTMUCH_VALUE_TIMESTAMP, Xapian::sortable_serialise (time_value)); message->doc.add_value (NOTMUCH_VALUE_FROM, from); message->doc.add_value (NOTMUCH_VALUE_SUBJECT, subject); message->modified = true; } void _notmuch_message_update_subject (notmuch_message_t *message, const char *subject) { message->doc.add_value (NOTMUCH_VALUE_SUBJECT, subject); message->modified = true; } /* Upgrade a message to support NOTMUCH_FEATURE_LAST_MOD. The caller * must call _notmuch_message_sync. */ void _notmuch_message_upgrade_last_mod (notmuch_message_t *message) { /* _notmuch_message_sync will update the last modification * revision; we just have to ask it to. */ message->modified = true; } /* Synchronize changes made to message->doc out into the database. */ void _notmuch_message_sync (notmuch_message_t *message) { if (_notmuch_database_mode (message->notmuch) == NOTMUCH_DATABASE_MODE_READ_ONLY) return; if (! message->modified) return; /* Update the last modification of this message. */ if (message->notmuch->features & NOTMUCH_FEATURE_LAST_MOD) /* sortable_serialise gives a reasonably compact encoding, * which directly translates to reduced IO when scanning the * value stream. Since it's built for doubles, we only get 53 * effective bits, but that's still enough for the database to * last a few centuries at 1 million revisions per second. */ message->doc.add_value (NOTMUCH_VALUE_LAST_MOD, Xapian::sortable_serialise ( _notmuch_database_new_revision ( message->notmuch))); message->notmuch->writable_xapian_db-> replace_document (message->doc_id, message->doc); message->modified = false; } /* Delete a message document from the database, leaving a ghost * message in its place */ notmuch_status_t _notmuch_message_delete (notmuch_message_t *message) { notmuch_status_t status; const char *mid, *tid; notmuch_message_t *ghost; notmuch_private_status_t private_status; notmuch_database_t *notmuch; unsigned int count = 0; bool is_ghost; mid = notmuch_message_get_message_id (message); tid = notmuch_message_get_thread_id (message); notmuch = message->notmuch; status = _notmuch_database_ensure_writable (message->notmuch); if (status) return status; message->notmuch->writable_xapian_db->delete_document (message->doc_id); /* if this was a ghost to begin with, we are done */ private_status = _notmuch_message_has_term (message, "type", "ghost", &is_ghost); if (private_status) return COERCE_STATUS (private_status, "Error trying to determine whether message was a ghost"); if (is_ghost) return NOTMUCH_STATUS_SUCCESS; /* look for a non-ghost message in the same thread */ try { Xapian::PostingIterator thread_doc, thread_doc_end; Xapian::PostingIterator mail_doc, mail_doc_end; _notmuch_database_find_doc_ids (message->notmuch, "thread", tid, &thread_doc, &thread_doc_end); _notmuch_database_find_doc_ids (message->notmuch, "type", "mail", &mail_doc, &mail_doc_end); while (count == 0 && thread_doc != thread_doc_end && mail_doc != mail_doc_end) { thread_doc.skip_to (*mail_doc); if (thread_doc != thread_doc_end) { if (*thread_doc == *mail_doc) { count++; } else { mail_doc.skip_to (*thread_doc); if (mail_doc != mail_doc_end && *thread_doc == *mail_doc) count++; } } } } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NOTMUCH_STATUS_XAPIAN_EXCEPTION; } if (count > 0) { /* reintroduce a ghost in its place because there are still * other active messages in this thread: */ ghost = _notmuch_message_create_for_message_id (notmuch, mid, &private_status); if (private_status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND) { private_status = _notmuch_message_initialize_ghost (ghost, tid); if (! private_status) _notmuch_message_sync (ghost); } else if (private_status == NOTMUCH_PRIVATE_STATUS_SUCCESS) { /* this is deeply weird, and we should not have gotten * into this state. is there a better error message to * return here? */ status = NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID; } notmuch_message_destroy (ghost); status = COERCE_STATUS (private_status, "Error converting to ghost message"); } else { /* the thread now contains only ghosts: delete them */ try { Xapian::PostingIterator doc, doc_end; _notmuch_database_find_doc_ids (message->notmuch, "thread", tid, &doc, &doc_end); for (; doc != doc_end; doc++) { message->notmuch->writable_xapian_db->delete_document (*doc); } } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NOTMUCH_STATUS_XAPIAN_EXCEPTION; } } return status; } /* Transform a blank message into a ghost message. The caller must * _notmuch_message_sync the message. */ notmuch_private_status_t _notmuch_message_initialize_ghost (notmuch_message_t *message, const char *thread_id) { notmuch_private_status_t status; status = _notmuch_message_add_term (message, "type", "ghost"); if (status) return status; status = _notmuch_message_add_term (message, "thread", thread_id); if (status) return status; return NOTMUCH_PRIVATE_STATUS_SUCCESS; } /* Ensure that 'message' is not holding any file object open. Future * calls to various functions will still automatically open the * message file as needed. */ void _notmuch_message_close (notmuch_message_t *message) { if (message->message_file) { _notmuch_message_file_close (message->message_file); message->message_file = NULL; } } /* Add a name:value term to 'message', (the actual term will be * encoded by prefixing the value with a short prefix). See * NORMAL_PREFIX and BOOLEAN_PREFIX arrays for the mapping of term * names to prefix values. * * This change will not be reflected in the database until the next * call to _notmuch_message_sync. */ notmuch_private_status_t _notmuch_message_add_term (notmuch_message_t *message, const char *prefix_name, const char *value) { char *term; notmuch_private_status_t status = NOTMUCH_PRIVATE_STATUS_SUCCESS; if (value == NULL) return NOTMUCH_PRIVATE_STATUS_NULL_POINTER; term = talloc_asprintf (message, "%s%s", _find_prefix (prefix_name), value); if (strlen (term) > NOTMUCH_TERM_MAX) { status = NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG; goto DONE; } try { message->doc.add_term (term, 0); message->modified = true; _notmuch_message_invalidate_metadata (message, prefix_name); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); status = NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION; } DONE: talloc_free (term); return status; } /* Parse 'text' and add a term to 'message' for each parsed word. Each * term will be added with the appropriate prefix if prefix_name is * non-NULL. */ notmuch_private_status_t _notmuch_message_gen_terms (notmuch_message_t *message, const char *prefix_name, const char *text) { Xapian::TermGenerator *term_gen = message->notmuch->term_gen; if (text == NULL) return NOTMUCH_PRIVATE_STATUS_NULL_POINTER; term_gen->set_document (message->doc); term_gen->set_termpos (message->termpos); if (prefix_name) { const char *prefix = _notmuch_database_prefix (message->notmuch, prefix_name); if (prefix == NULL) return NOTMUCH_PRIVATE_STATUS_BAD_PREFIX; _notmuch_message_invalidate_metadata (message, prefix_name); term_gen->index_text (text, 1, prefix); } else { term_gen->index_text (text); } /* Create a gap between this an the next terms so they don't * appear to be a phrase. */ message->termpos = term_gen->get_termpos () + 100; return NOTMUCH_PRIVATE_STATUS_SUCCESS; } /* Remove a name:value term from 'message', (the actual term will be * encoded by prefixing the value with a short prefix). See * NORMAL_PREFIX and BOOLEAN_PREFIX arrays for the mapping of term * names to prefix values. * * This change will not be reflected in the database until the next * call to _notmuch_message_sync. */ notmuch_private_status_t _notmuch_message_remove_term (notmuch_message_t *message, const char *prefix_name, const char *value) { char *term; if (value == NULL) return NOTMUCH_PRIVATE_STATUS_NULL_POINTER; term = talloc_asprintf (message, "%s%s", _find_prefix (prefix_name), value); if (strlen (term) > NOTMUCH_TERM_MAX) return NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG; try { message->doc.remove_term (term); message->modified = true; } catch (const Xapian::InvalidArgumentError &error) { /* We'll let the philosophers try to wrestle with the * question of whether failing to remove that which was not * there in the first place is failure. For us, we'll silently * consider it all good. */ LOG_XAPIAN_EXCEPTION (message, error); } talloc_free (term); _notmuch_message_invalidate_metadata (message, prefix_name); return NOTMUCH_PRIVATE_STATUS_SUCCESS; } notmuch_private_status_t _notmuch_message_has_term (notmuch_message_t *message, const char *prefix_name, const char *value, bool *result) { char *term; bool out = false; notmuch_private_status_t status = NOTMUCH_PRIVATE_STATUS_SUCCESS; if (value == NULL) return NOTMUCH_PRIVATE_STATUS_NULL_POINTER; term = talloc_asprintf (message, "%s%s", _find_prefix (prefix_name), value); if (strlen (term) > NOTMUCH_TERM_MAX) return NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG; try { /* Look for the exact term */ Xapian::TermIterator i = message->doc.termlist_begin (); i.skip_to (term); if (i != message->doc.termlist_end () && ! strcmp ((*i).c_str (), term)) out = true; } catch (Xapian::Error &error) { status = NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION; } talloc_free (term); *result = out; return status; } notmuch_status_t notmuch_message_add_tag (notmuch_message_t *message, const char *tag) { notmuch_private_status_t private_status; notmuch_status_t status; try { status = _notmuch_database_ensure_writable (message->notmuch); if (status) return status; if (tag == NULL) return NOTMUCH_STATUS_NULL_POINTER; if (strlen (tag) > NOTMUCH_TAG_MAX) return NOTMUCH_STATUS_TAG_TOO_LONG; private_status = _notmuch_message_add_term (message, "tag", tag); if (private_status) { return COERCE_STATUS (private_status, "_notmuch_message_remove_term return unexpected value: %d\n", private_status); } if (! message->frozen) _notmuch_message_sync (message); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NOTMUCH_STATUS_XAPIAN_EXCEPTION; } return NOTMUCH_STATUS_SUCCESS; } notmuch_status_t notmuch_message_remove_tag (notmuch_message_t *message, const char *tag) { notmuch_private_status_t private_status; notmuch_status_t status; try { status = _notmuch_database_ensure_writable (message->notmuch); if (status) return status; if (tag == NULL) return NOTMUCH_STATUS_NULL_POINTER; if (strlen (tag) > NOTMUCH_TAG_MAX) return NOTMUCH_STATUS_TAG_TOO_LONG; private_status = _notmuch_message_remove_term (message, "tag", tag); if (private_status) { return COERCE_STATUS (private_status, "_notmuch_message_remove_term return unexpected value: %d\n", private_status); } if (! message->frozen) _notmuch_message_sync (message); } catch (Xapian::Error &error) { LOG_XAPIAN_EXCEPTION (message, error); return NOTMUCH_STATUS_XAPIAN_EXCEPTION; } return NOTMUCH_STATUS_SUCCESS; } /* Is the given filename within a maildir directory? * * Specifically, is the final directory component of 'filename' either * "cur" or "new". If so, return a pointer to that final directory * component within 'filename'. If not, return NULL. * * A non-NULL return value is guaranteed to be a valid string pointer * pointing to the characters "new/" or "cur/", (but not * NUL-terminated). */ static const char * _filename_is_in_maildir (const char *filename) { const char *slash, *dir = NULL; /* Find the last '/' separating directory from filename. */ slash = strrchr (filename, '/'); if (slash == NULL) return NULL; /* Jump back 4 characters to where the previous '/' will be if the * directory is named "cur" or "new". */ if (slash - filename < 4) return NULL; slash -= 4; if (*slash != '/') return NULL; dir = slash + 1; if (STRNCMP_LITERAL (dir, "cur/") == 0 || STRNCMP_LITERAL (dir, "new/") == 0) { return dir; } return NULL; } static notmuch_status_t _ensure_maildir_flags (notmuch_message_t *message, bool force) { const char *flags; notmuch_filenames_t *filenames; const char *filename, *dir; char *combined_flags = talloc_strdup (message, ""); int seen_maildir_info = 0; if (message->maildir_flags) { if (force) { talloc_free (message->maildir_flags); message->maildir_flags = NULL; } } filenames = notmuch_message_get_filenames (message); if (! filenames) return NOTMUCH_STATUS_XAPIAN_EXCEPTION; for (; notmuch_filenames_valid (filenames); notmuch_filenames_move_to_next (filenames)) { filename = notmuch_filenames_get (filenames); dir = _filename_is_in_maildir (filename); if (! dir) continue; flags = strstr (filename, ":2,"); if (flags) { seen_maildir_info = 1; flags += 3; combined_flags = talloc_strdup_append (combined_flags, flags); } else if (STRNCMP_LITERAL (dir, "new/") == 0) { /* Messages are delivered to new/ with no "info" part, but * they effectively have default maildir flags. According * to the spec, we should ignore the info part for * messages in new/, but some MUAs (mutt) can set maildir * flags on messages in new/, so we're liberal in what we * accept. */ seen_maildir_info = 1; } } if (seen_maildir_info) message->maildir_flags = combined_flags; return NOTMUCH_STATUS_SUCCESS; } notmuch_bool_t notmuch_message_has_maildir_flag (notmuch_message_t *message, char flag) { notmuch_status_t status; notmuch_bool_t ret; status = notmuch_message_has_maildir_flag_st (message, flag, &ret); if (status) return FALSE; return ret; } notmuch_status_t notmuch_message_has_maildir_flag_st (notmuch_message_t *message, char flag, notmuch_bool_t *is_set) { notmuch_status_t status; if (! is_set) return NOTMUCH_STATUS_NULL_POINTER; status = _ensure_maildir_flags (message, false); if (status) return status; *is_set = message->maildir_flags && (strchr (message->maildir_flags, flag) != NULL); return NOTMUCH_STATUS_SUCCESS; } notmuch_status_t notmuch_message_maildir_flags_to_tags (notmuch_message_t *message) { notmuch_status_t status; unsigned i; status = _ensure_maildir_flags (message, true); if (status) return status; /* If none of the filenames have any maildir info field (not even * an empty info with no flags set) then there's no information to * go on, so do nothing. */ if (! message->maildir_flags) return NOTMUCH_STATUS_SUCCESS; status = notmuch_message_freeze (message); if (status) return status; for (i = 0; i < ARRAY_SIZE (flag2tag); i++) { if ((strchr (message->maildir_flags, flag2tag[i].flag) != NULL) ^ flag2tag[i].inverse) { status = notmuch_message_add_tag (message, flag2tag[i].tag); } else { status = notmuch_message_remove_tag (message, flag2tag[i].tag); } if (status) return status; } status = notmuch_message_thaw (message); return status; } /* From the set of tags on 'message' and the flag2tag table, compute a * set of maildir-flag actions to be taken, (flags that should be * either set or cleared). * * The result is returned as two talloced strings: to_set, and to_clear */ static void _get_maildir_flag_actions (notmuch_message_t *message, char **to_set_ret, char **to_clear_ret) { char *to_set, *to_clear; notmuch_tags_t *tags; const char *tag; unsigned i; to_set = talloc_strdup (message, ""); to_clear = talloc_strdup (message, ""); /* First, find flags for all set tags. */ for (tags = notmuch_message_get_tags (message); notmuch_tags_valid (tags); notmuch_tags_move_to_next (tags)) { tag = notmuch_tags_get (tags); for (i = 0; i < ARRAY_SIZE (flag2tag); i++) { if (strcmp (tag, flag2tag[i].tag) == 0) { if (flag2tag[i].inverse) to_clear = talloc_asprintf_append (to_clear, "%c", flag2tag[i].flag); else to_set = talloc_asprintf_append (to_set, "%c", flag2tag[i].flag); } } } /* Then, find the flags for all tags not present. */ for (i = 0; i < ARRAY_SIZE (flag2tag); i++) { if (flag2tag[i].inverse) { if (strchr (to_clear, flag2tag[i].flag) == NULL) to_set = talloc_asprintf_append (to_set, "%c", flag2tag[i].flag); } else { if (strchr (to_set, flag2tag[i].flag) == NULL) to_clear = talloc_asprintf_append (to_clear, "%c", flag2tag[i].flag); } } *to_set_ret = to_set; *to_clear_ret = to_clear; } /* Given 'filename' and a set of maildir flags to set and to clear, * compute the new maildir filename. * * If the existing filename is in the directory "new", the new * filename will be in the directory "cur", except for the case when * no flags are changed and the existing filename does not contain * maildir info (starting with ",2:"). * * After a sequence of ":2," in the filename, any subsequent * single-character flags will be added or removed according to the * characters in flags_to_set and flags_to_clear. Any existing flags * not mentioned in either string will remain. The final list of flags * will be in ASCII order. * * If the original flags seem invalid, (repeated characters or * non-ASCII ordering of flags), this function will return NULL * (meaning that renaming would not be safe and should not occur). */ static char * _new_maildir_filename (void *ctx, const char *filename, const char *flags_to_set, const char *flags_to_clear) { const char *info, *flags; unsigned int flag, last_flag; char *filename_new, *dir; char flag_map[128]; int flags_in_map = 0; bool flags_changed = false; unsigned int i; char *s; memset (flag_map, 0, sizeof (flag_map)); info = strstr (filename, ":2,"); if (info == NULL) { info = filename + strlen (filename); } else { /* Loop through existing flags in filename. */ for (flags = info + 3, last_flag = 0; *flags; last_flag = flag, flags++) { flag = *flags; /* Original flags not in ASCII order. Abort. */ if (flag < last_flag) return NULL; /* Non-ASCII flag. Abort. */ if (flag > sizeof (flag_map) - 1) return NULL; /* Repeated flag value. Abort. */ if (flag_map[flag]) return NULL; flag_map[flag] = 1; flags_in_map++; } } /* Then set and clear our flags from tags. */ for (flags = flags_to_set; *flags; flags++) { flag = *flags; if (flag_map[flag] == 0) { flag_map[flag] = 1; flags_in_map++; flags_changed = true; } } for (flags = flags_to_clear; *flags; flags++) { flag = *flags; if (flag_map[flag]) { flag_map[flag] = 0; flags_in_map--; flags_changed = true; } } /* Messages in new/ without maildir info can be kept in new/ if no * flags have changed. */ dir = (char *) _filename_is_in_maildir (filename); if (dir && STRNCMP_LITERAL (dir, "new/") == 0 && ! *info && ! flags_changed) return talloc_strdup (ctx, filename); filename_new = (char *) talloc_size (ctx, info - filename + strlen (":2,") + flags_in_map + 1); if (unlikely (filename_new == NULL)) return NULL; strncpy (filename_new, filename, info - filename); filename_new[info - filename] = '\0'; strcat (filename_new, ":2,"); s = filename_new + strlen (filename_new); for (i = 0; i < sizeof (flag_map); i++) { if (flag_map[i]) { *s = i; s++; } } *s = '\0'; /* If message is in new/ move it under cur/. */ dir = (char *) _filename_is_in_maildir (filename_new); if (dir && STRNCMP_LITERAL (dir, "new/") == 0) memcpy (dir, "cur/", 4); return filename_new; } notmuch_status_t notmuch_message_tags_to_maildir_flags (notmuch_message_t *message) { notmuch_filenames_t *filenames; const char *filename; char *filename_new; char *to_set, *to_clear; notmuch_status_t status = NOTMUCH_STATUS_SUCCESS; _get_maildir_flag_actions (message, &to_set, &to_clear); for (filenames = notmuch_message_get_filenames (message); notmuch_filenames_valid (filenames); notmuch_filenames_move_to_next (filenames)) { filename = notmuch_filenames_get (filenames); if (! _filename_is_in_maildir (filename)) continue; filename_new = _new_maildir_filename (message, filename, to_set, to_clear); if (filename_new == NULL) continue; if (strcmp (filename, filename_new)) { int err; notmuch_status_t new_status; err = rename (filename, filename_new); if (err) continue; new_status = _notmuch_message_remove_filename (message, filename); /* Hold on to only the first error. */ if (! status && new_status && new_status != NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID) { status = new_status; continue; } new_status = _notmuch_message_add_filename (message, filename_new); /* Hold on to only the first error. */ if (! status && new_status) { status = new_status; continue; } _notmuch_message_sync (message); } talloc_free (filename_new); } talloc_free (to_set); talloc_free (to_clear); return status; } notmuch_status_t notmuch_message_remove_all_tags (notmuch_message_t *message) { notmuch_private_status_t private_status; notmuch_status_t status; notmuch_tags_t *tags; const char *tag; status = _notmuch_database_ensure_writable (message->notmuch); if (status) return status; tags = notmuch_message_get_tags (message); if (! tags) return NOTMUCH_STATUS_XAPIAN_EXCEPTION; for (; notmuch_tags_valid (tags); notmuch_tags_move_to_next (tags)) { tag = notmuch_tags_get (tags); private_status = _notmuch_message_remove_term (message, "tag", tag); if (private_status) { return COERCE_STATUS (private_status, "_notmuch_message_remove_term return unexpected value: %d\n", private_status); } } if (! message->frozen) _notmuch_message_sync (message); talloc_free (tags); return NOTMUCH_STATUS_SUCCESS; } notmuch_status_t notmuch_message_freeze (notmuch_message_t *message) { notmuch_status_t status; status = _notmuch_database_ensure_writable (message->notmuch); if (status) return status; message->frozen++; return NOTMUCH_STATUS_SUCCESS; } notmuch_status_t notmuch_message_thaw (notmuch_message_t *message) { notmuch_status_t status; status = _notmuch_database_ensure_writable (message->notmuch); if (status) return status; if (message->frozen > 0) { message->frozen--; if (message->frozen == 0) _notmuch_message_sync (message); return NOTMUCH_STATUS_SUCCESS; } else { return NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW; } } void notmuch_message_destroy (notmuch_message_t *message) { talloc_free (message); } notmuch_database_t * notmuch_message_get_database (const notmuch_message_t *message) { return message->notmuch; } static void _notmuch_message_ensure_property_map (notmuch_message_t *message) { notmuch_string_node_t *node; if (message->property_map) return; _notmuch_message_ensure_metadata (message, message->property_term_list); message->property_map = _notmuch_string_map_create (message); for (node = message->property_term_list->head; node; node = node->next) { const char *key; char *value; value = strchr (node->string, '='); if (! value) INTERNAL_ERROR ("malformed property term"); *value = '\0'; value++; key = node->string; _notmuch_string_map_append (message->property_map, key, value); } talloc_free (message->property_term_list); message->property_term_list = NULL; } notmuch_string_map_t * _notmuch_message_property_map (notmuch_message_t *message) { _notmuch_message_ensure_property_map (message); return message->property_map; } bool _notmuch_message_frozen (notmuch_message_t *message) { return message->frozen; } notmuch_status_t notmuch_message_reindex (notmuch_message_t *message, notmuch_indexopts_t *indexopts) { notmuch_database_t *notmuch = NULL; notmuch_status_t ret = NOTMUCH_STATUS_SUCCESS; notmuch_private_status_t private_status; notmuch_filenames_t *orig_filenames = NULL; const char *orig_thread_id = NULL; notmuch_message_file_t *message_file = NULL; int found = 0; if (message == NULL) return NOTMUCH_STATUS_NULL_POINTER; /* Save in case we need to delete message */ orig_thread_id = notmuch_message_get_thread_id (message); if (! orig_thread_id) { /* the following is correct as long as there is only one reason * n_m_get_thread_id returns NULL */ return NOTMUCH_STATUS_XAPIAN_EXCEPTION; } /* strdup it because the metadata may be invalidated */ orig_thread_id = talloc_strdup (message, orig_thread_id); notmuch = notmuch_message_get_database (message); ret = _notmuch_database_ensure_writable (notmuch); if (ret) return ret; orig_filenames = notmuch_message_get_filenames (message); private_status = _notmuch_message_remove_indexed_terms (message); if (private_status) { ret = COERCE_STATUS (private_status, "error removing terms"); goto DONE; } ret = notmuch_message_remove_all_properties_with_prefix (message, "index."); if (ret) goto DONE; /* XXX TODO: distinguish from other error returns above? */ if (indexopts && notmuch_indexopts_get_decrypt_policy (indexopts) == NOTMUCH_DECRYPT_FALSE) { ret = notmuch_message_remove_all_properties (message, "session-key"); if (ret) goto DONE; } /* re-add the filenames with the associated indexopts */ for (; notmuch_filenames_valid (orig_filenames); notmuch_filenames_move_to_next (orig_filenames)) { const char *date; const char *from, *to, *subject; char *message_id = NULL; const char *thread_id = NULL; const char *filename = notmuch_filenames_get (orig_filenames); message_file = _notmuch_message_file_open (notmuch, filename); if (message_file == NULL) continue; ret = _notmuch_message_file_get_headers (message_file, &from, &subject, &to, &date, &message_id); if (ret) goto DONE; /* XXX TODO: deal with changing message id? */ _notmuch_message_add_filename (message, filename); ret = _notmuch_database_link_message_to_parents (notmuch, message, message_file, &thread_id); if (ret) goto DONE; if (thread_id == NULL) thread_id = orig_thread_id; _notmuch_message_add_term (message, "thread", thread_id); /* Take header values only from first filename */ if (found == 0) _notmuch_message_set_header_values (message, date, from, subject); ret = _notmuch_message_index_file (message, indexopts, message_file); if (ret == NOTMUCH_STATUS_FILE_ERROR) continue; if (ret) goto DONE; found++; _notmuch_message_file_close (message_file); message_file = NULL; } if (found == 0) { /* put back thread id to help cleanup */ _notmuch_message_add_term (message, "thread", orig_thread_id); ret = _notmuch_message_delete (message); } else { _notmuch_message_sync (message); } DONE: if (message_file) _notmuch_message_file_close (message_file); /* XXX TODO destroy orig_filenames? */ return ret; }