mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-12-27 03:41:41 +01:00
2673 lines
77 KiB
C++
2673 lines
77 KiB
C++
/* database.cc - The database interfaces of the notmuch mail library
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*
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* Copyright © 2009 Carl Worth
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://www.gnu.org/licenses/ .
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*
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* Author: Carl Worth <cworth@cworth.org>
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*/
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#include "database-private.h"
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#include "parse-time-vrp.h"
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#include "string-util.h"
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#include <iostream>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <ftw.h>
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#include <glib.h> /* g_free, GPtrArray, GHashTable */
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#include <glib-object.h> /* g_type_init */
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#include <gmime/gmime.h> /* g_mime_init */
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using namespace std;
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#define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr[0]))
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typedef struct {
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const char *name;
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const char *prefix;
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} prefix_t;
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#define NOTMUCH_DATABASE_VERSION 3
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#define STRINGIFY(s) _SUB_STRINGIFY(s)
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#define _SUB_STRINGIFY(s) #s
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/* Here's the current schema for our database (for NOTMUCH_DATABASE_VERSION):
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*
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* We currently have three different types of documents (mail, ghost,
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* and directory) and also some metadata.
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*
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* Mail document
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* -------------
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* A mail document is associated with a particular email message. It
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* is stored in one or more files on disk (though only one has its
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* content indexed) and is uniquely identified by its "id" field
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* (which is generally the message ID). It is indexed with the
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* following prefixed terms which the database uses to construct
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* threads, etc.:
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*
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* Single terms of given prefix:
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*
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* type: mail
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*
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* id: Unique ID of mail. This is from the Message-ID header
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* if present and not too long (see NOTMUCH_MESSAGE_ID_MAX).
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* If it's present and too long, then we use
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* "notmuch-sha1-<sha1_sum_of_message_id>".
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* If this header is not present, we use
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* "notmuch-sha1-<sha1_sum_of_entire_file>".
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*
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* thread: The ID of the thread to which the mail belongs
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*
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* replyto: The ID from the In-Reply-To header of the mail (if any).
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*
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* Multiple terms of given prefix:
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*
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* reference: All message IDs from In-Reply-To and References
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* headers in the message.
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*
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* tag: Any tags associated with this message by the user.
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*
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* file-direntry: A colon-separated pair of values
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* (INTEGER:STRING), where INTEGER is the
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* document ID of a directory document, and
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* STRING is the name of a file within that
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* directory for this mail message.
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*
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* A mail document also has four values:
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*
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* TIMESTAMP: The time_t value corresponding to the message's
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* Date header.
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*
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* MESSAGE_ID: The unique ID of the mail mess (see "id" above)
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*
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* FROM: The value of the "From" header
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*
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* SUBJECT: The value of the "Subject" header
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*
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* LAST_MOD: The revision number as of the last tag or
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* filename change.
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*
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* In addition, terms from the content of the message are added with
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* "from", "to", "attachment", and "subject" prefixes for use by the
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* user in searching. Similarly, terms from the path of the mail
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* message are added with "folder" and "path" prefixes. But the
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* database doesn't really care itself about any of these.
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*
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* The data portion of a mail document is empty.
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*
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* Ghost mail document [if NOTMUCH_FEATURE_GHOSTS]
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* -----------------------------------------------
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* A ghost mail document is like a mail document, but where we don't
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* have the message content. These are used to track thread reference
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* information for messages we haven't received.
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*
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* A ghost mail document has type: ghost; id and thread fields that
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* are identical to the mail document fields; and a MESSAGE_ID value.
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*
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* Directory document
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* ------------------
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* A directory document is used by a client of the notmuch library to
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* maintain data necessary to allow for efficient polling of mail
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* directories.
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*
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* All directory documents contain one term:
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*
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* directory: The directory path (relative to the database path)
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* Or the SHA1 sum of the directory path (if the
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* path itself is too long to fit in a Xapian
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* term).
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*
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* And all directory documents for directories other than top-level
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* directories also contain the following term:
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*
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* directory-direntry: A colon-separated pair of values
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* (INTEGER:STRING), where INTEGER is the
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* document ID of the parent directory
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* document, and STRING is the name of this
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* directory within that parent.
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*
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* All directory documents have a single value:
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*
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* TIMESTAMP: The mtime of the directory (at last scan)
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*
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* The data portion of a directory document contains the path of the
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* directory (relative to the database path).
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*
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* Database metadata
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* -----------------
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* Xapian allows us to store arbitrary name-value pairs as
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* "metadata". We currently use the following metadata names with the
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* given meanings:
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*
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* version The database schema version, (which is distinct
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* from both the notmuch package version (see
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* notmuch --version) and the libnotmuch library
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* version. The version is stored as an base-10
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* ASCII integer. The initial database version
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* was 1, (though a schema existed before that
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* were no "version" database value existed at
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* all). Successive versions are allocated as
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* changes are made to the database (such as by
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* indexing new fields).
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*
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* features The set of features supported by this
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* database. This consists of a set of
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* '\n'-separated lines, where each is a feature
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* name, a '\t', and compatibility flags. If the
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* compatibility flags contain 'w', then the
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* opener must support this feature to safely
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* write this database. If the compatibility
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* flags contain 'r', then the opener must
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* support this feature to read this database.
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* Introduced in database version 3.
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*
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* last_thread_id The last thread ID generated. This is stored
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* as a 16-byte hexadecimal ASCII representation
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* of a 64-bit unsigned integer. The first ID
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* generated is 1 and the value will be
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* incremented for each thread ID.
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*
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* Obsolete metadata
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* -----------------
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*
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* If ! NOTMUCH_FEATURE_GHOSTS, there are no ghost mail documents.
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* Instead, the database has the following additional database
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* metadata:
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*
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* thread_id_* A pre-allocated thread ID for a particular
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* message. This is actually an arbitrarily large
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* family of metadata name. Any particular name is
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* formed by concatenating "thread_id_" with a message
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* ID (or the SHA1 sum of a message ID if it is very
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* long---see description of 'id' in the mail
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* document). The value stored is a thread ID.
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*
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* These thread ID metadata values are stored
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* whenever a message references a parent message
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* that does not yet exist in the database. A
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* thread ID will be allocated and stored, and if
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* the message is later added, the stored thread
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* ID will be used (and the metadata value will
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* be cleared).
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*
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* Even before a message is added, it's
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* pre-allocated thread ID is useful so that all
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* descendant messages that reference this common
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* parent can be recognized as belonging to the
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* same thread.
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*/
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/* With these prefix values we follow the conventions published here:
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*
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* http://xapian.org/docs/omega/termprefixes.html
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*
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* as much as makes sense. Note that I took some liberty in matching
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* the reserved prefix values to notmuch concepts, (for example, 'G'
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* is documented as "newsGroup (or similar entity - e.g. a web forum
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* name)", for which I think the thread is the closest analogue in
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* notmuch. This in spite of the fact that we will eventually be
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* storing mailing-list messages where 'G' for "mailing list name"
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* might be even a closer analogue. I'm treating the single-character
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* prefixes preferentially for core notmuch concepts (which will be
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* nearly universal to all mail messages).
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*/
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static prefix_t BOOLEAN_PREFIX_INTERNAL[] = {
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{ "type", "T" },
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{ "reference", "XREFERENCE" },
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{ "replyto", "XREPLYTO" },
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{ "directory", "XDIRECTORY" },
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{ "file-direntry", "XFDIRENTRY" },
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{ "directory-direntry", "XDDIRENTRY" },
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};
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static prefix_t BOOLEAN_PREFIX_EXTERNAL[] = {
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{ "thread", "G" },
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{ "tag", "K" },
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{ "is", "K" },
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{ "id", "Q" },
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{ "path", "P" },
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/*
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* Without the ":", since this is a multi-letter prefix, Xapian
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* will add a colon itself if the first letter of the path is
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* upper-case ASCII. Including the ":" forces there to always be a
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* colon, which keeps our own logic simpler.
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*/
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{ "folder", "XFOLDER:" },
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};
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static prefix_t PROBABILISTIC_PREFIX[]= {
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{ "from", "XFROM" },
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{ "to", "XTO" },
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{ "attachment", "XATTACHMENT" },
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{ "mimetype", "XMIMETYPE"},
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{ "subject", "XSUBJECT"},
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};
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const char *
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_find_prefix (const char *name)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE (BOOLEAN_PREFIX_INTERNAL); i++) {
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if (strcmp (name, BOOLEAN_PREFIX_INTERNAL[i].name) == 0)
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return BOOLEAN_PREFIX_INTERNAL[i].prefix;
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}
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for (i = 0; i < ARRAY_SIZE (BOOLEAN_PREFIX_EXTERNAL); i++) {
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if (strcmp (name, BOOLEAN_PREFIX_EXTERNAL[i].name) == 0)
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return BOOLEAN_PREFIX_EXTERNAL[i].prefix;
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}
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for (i = 0; i < ARRAY_SIZE (PROBABILISTIC_PREFIX); i++) {
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if (strcmp (name, PROBABILISTIC_PREFIX[i].name) == 0)
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return PROBABILISTIC_PREFIX[i].prefix;
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}
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INTERNAL_ERROR ("No prefix exists for '%s'\n", name);
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return "";
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}
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static const struct {
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/* NOTMUCH_FEATURE_* value. */
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_notmuch_features value;
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/* Feature name as it appears in the database. This name should
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* be appropriate for displaying to the user if an older version
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* of notmuch doesn't support this feature. */
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const char *name;
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/* Compatibility flags when this feature is declared. */
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const char *flags;
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} feature_names[] = {
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{ NOTMUCH_FEATURE_FILE_TERMS,
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"multiple paths per message", "rw" },
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{ NOTMUCH_FEATURE_DIRECTORY_DOCS,
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"relative directory paths", "rw" },
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/* Header values are not required for reading a database because a
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* reader can just refer to the message file. */
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{ NOTMUCH_FEATURE_FROM_SUBJECT_ID_VALUES,
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"from/subject/message-ID in database", "w" },
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{ NOTMUCH_FEATURE_BOOL_FOLDER,
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"exact folder:/path: search", "rw" },
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{ NOTMUCH_FEATURE_GHOSTS,
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"mail documents for missing messages", "w"},
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/* Knowledge of the index mime-types are not required for reading
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* a database because a reader will just be unable to query
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* them. */
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{ NOTMUCH_FEATURE_INDEXED_MIMETYPES,
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"indexed MIME types", "w"},
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{ NOTMUCH_FEATURE_LAST_MOD,
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"modification tracking", "w"},
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};
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const char *
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notmuch_status_to_string (notmuch_status_t status)
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{
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switch (status) {
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case NOTMUCH_STATUS_SUCCESS:
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return "No error occurred";
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case NOTMUCH_STATUS_OUT_OF_MEMORY:
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return "Out of memory";
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case NOTMUCH_STATUS_READ_ONLY_DATABASE:
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return "Attempt to write to a read-only database";
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case NOTMUCH_STATUS_XAPIAN_EXCEPTION:
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return "A Xapian exception occurred";
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case NOTMUCH_STATUS_FILE_ERROR:
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return "Something went wrong trying to read or write a file";
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case NOTMUCH_STATUS_FILE_NOT_EMAIL:
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return "File is not an email";
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case NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID:
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return "Message ID is identical to a message in database";
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case NOTMUCH_STATUS_NULL_POINTER:
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return "Erroneous NULL pointer";
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case NOTMUCH_STATUS_TAG_TOO_LONG:
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return "Tag value is too long (exceeds NOTMUCH_TAG_MAX)";
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case NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW:
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return "Unbalanced number of calls to notmuch_message_freeze/thaw";
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case NOTMUCH_STATUS_UNBALANCED_ATOMIC:
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return "Unbalanced number of calls to notmuch_database_begin_atomic/end_atomic";
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case NOTMUCH_STATUS_UNSUPPORTED_OPERATION:
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return "Unsupported operation";
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case NOTMUCH_STATUS_UPGRADE_REQUIRED:
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return "Operation requires a database upgrade";
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case NOTMUCH_STATUS_PATH_ERROR:
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return "Path supplied is illegal for this function";
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default:
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case NOTMUCH_STATUS_LAST_STATUS:
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return "Unknown error status value";
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}
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}
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void
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_notmuch_database_log (notmuch_database_t *notmuch,
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const char *format,
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...)
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{
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va_list va_args;
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va_start (va_args, format);
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if (notmuch->status_string)
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talloc_free (notmuch->status_string);
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notmuch->status_string = talloc_vasprintf (notmuch, format, va_args);
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va_end (va_args);
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}
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static void
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find_doc_ids_for_term (notmuch_database_t *notmuch,
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const char *term,
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Xapian::PostingIterator *begin,
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Xapian::PostingIterator *end)
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{
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*begin = notmuch->xapian_db->postlist_begin (term);
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*end = notmuch->xapian_db->postlist_end (term);
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}
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static void
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find_doc_ids (notmuch_database_t *notmuch,
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const char *prefix_name,
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const char *value,
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Xapian::PostingIterator *begin,
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Xapian::PostingIterator *end)
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{
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char *term;
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term = talloc_asprintf (notmuch, "%s%s",
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_find_prefix (prefix_name), value);
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find_doc_ids_for_term (notmuch, term, begin, end);
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talloc_free (term);
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}
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notmuch_private_status_t
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_notmuch_database_find_unique_doc_id (notmuch_database_t *notmuch,
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const char *prefix_name,
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const char *value,
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unsigned int *doc_id)
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{
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Xapian::PostingIterator i, end;
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find_doc_ids (notmuch, prefix_name, value, &i, &end);
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if (i == end) {
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*doc_id = 0;
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return NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND;
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}
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*doc_id = *i;
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|
#if DEBUG_DATABASE_SANITY
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i++;
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if (i != end)
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INTERNAL_ERROR ("Term %s:%s is not unique as expected.\n",
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prefix_name, value);
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#endif
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return NOTMUCH_PRIVATE_STATUS_SUCCESS;
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}
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|
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static Xapian::Document
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find_document_for_doc_id (notmuch_database_t *notmuch, unsigned doc_id)
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{
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return notmuch->xapian_db->get_document (doc_id);
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}
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|
|
|
/* Generate a compressed version of 'message_id' of the form:
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*
|
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* notmuch-sha1-<sha1_sum_of_message_id>
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|
*/
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|
char *
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_notmuch_message_id_compressed (void *ctx, const char *message_id)
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|
{
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char *sha1, *compressed;
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sha1 = _notmuch_sha1_of_string (message_id);
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compressed = talloc_asprintf (ctx, "notmuch-sha1-%s", sha1);
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free (sha1);
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return compressed;
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|
}
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|
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|
notmuch_status_t
|
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notmuch_database_find_message (notmuch_database_t *notmuch,
|
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const char *message_id,
|
|
notmuch_message_t **message_ret)
|
|
{
|
|
notmuch_private_status_t status;
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|
unsigned int doc_id;
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|
|
|
if (message_ret == NULL)
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|
return NOTMUCH_STATUS_NULL_POINTER;
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|
|
|
if (strlen (message_id) > NOTMUCH_MESSAGE_ID_MAX)
|
|
message_id = _notmuch_message_id_compressed (notmuch, message_id);
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|
try {
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status = _notmuch_database_find_unique_doc_id (notmuch, "id",
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message_id, &doc_id);
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if (status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND)
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*message_ret = NULL;
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else {
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*message_ret = _notmuch_message_create (notmuch, notmuch, doc_id,
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NULL);
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|
if (*message_ret == NULL)
|
|
return NOTMUCH_STATUS_OUT_OF_MEMORY;
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|
}
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|
return NOTMUCH_STATUS_SUCCESS;
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|
} catch (const Xapian::Error &error) {
|
|
_notmuch_database_log (notmuch, "A Xapian exception occurred finding message: %s.\n",
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error.get_msg().c_str());
|
|
notmuch->exception_reported = TRUE;
|
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*message_ret = NULL;
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return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
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|
}
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|
}
|
|
|
|
/* Advance 'str' past any whitespace or RFC 822 comments. A comment is
|
|
* a (potentially nested) parenthesized sequence with '\' used to
|
|
* escape any character (including parentheses).
|
|
*
|
|
* If the sequence to be skipped continues to the end of the string,
|
|
* then 'str' will be left pointing at the final terminating '\0'
|
|
* character.
|
|
*/
|
|
static void
|
|
skip_space_and_comments (const char **str)
|
|
{
|
|
const char *s;
|
|
|
|
s = *str;
|
|
while (*s && (isspace (*s) || *s == '(')) {
|
|
while (*s && isspace (*s))
|
|
s++;
|
|
if (*s == '(') {
|
|
int nesting = 1;
|
|
s++;
|
|
while (*s && nesting) {
|
|
if (*s == '(') {
|
|
nesting++;
|
|
} else if (*s == ')') {
|
|
nesting--;
|
|
} else if (*s == '\\') {
|
|
if (*(s+1))
|
|
s++;
|
|
}
|
|
s++;
|
|
}
|
|
}
|
|
}
|
|
|
|
*str = s;
|
|
}
|
|
|
|
/* Parse an RFC 822 message-id, discarding whitespace, any RFC 822
|
|
* comments, and the '<' and '>' delimiters.
|
|
*
|
|
* If not NULL, then *next will be made to point to the first character
|
|
* not parsed, (possibly pointing to the final '\0' terminator.
|
|
*
|
|
* Returns a newly talloc'ed string belonging to 'ctx'.
|
|
*
|
|
* Returns NULL if there is any error parsing the message-id. */
|
|
static char *
|
|
_parse_message_id (void *ctx, const char *message_id, const char **next)
|
|
{
|
|
const char *s, *end;
|
|
char *result;
|
|
|
|
if (message_id == NULL || *message_id == '\0')
|
|
return NULL;
|
|
|
|
s = message_id;
|
|
|
|
skip_space_and_comments (&s);
|
|
|
|
/* Skip any unstructured text as well. */
|
|
while (*s && *s != '<')
|
|
s++;
|
|
|
|
if (*s == '<') {
|
|
s++;
|
|
} else {
|
|
if (next)
|
|
*next = s;
|
|
return NULL;
|
|
}
|
|
|
|
skip_space_and_comments (&s);
|
|
|
|
end = s;
|
|
while (*end && *end != '>')
|
|
end++;
|
|
if (next) {
|
|
if (*end)
|
|
*next = end + 1;
|
|
else
|
|
*next = end;
|
|
}
|
|
|
|
if (end > s && *end == '>')
|
|
end--;
|
|
if (end <= s)
|
|
return NULL;
|
|
|
|
result = talloc_strndup (ctx, s, end - s + 1);
|
|
|
|
/* Finally, collapse any whitespace that is within the message-id
|
|
* itself. */
|
|
{
|
|
char *r;
|
|
int len;
|
|
|
|
for (r = result, len = strlen (r); *r; r++, len--)
|
|
if (*r == ' ' || *r == '\t')
|
|
memmove (r, r+1, len);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Parse a References header value, putting a (talloc'ed under 'ctx')
|
|
* copy of each referenced message-id into 'hash'.
|
|
*
|
|
* We explicitly avoid including any reference identical to
|
|
* 'message_id' in the result (to avoid mass confusion when a single
|
|
* message references itself cyclically---and yes, mail messages are
|
|
* not infrequent in the wild that do this---don't ask me why).
|
|
*
|
|
* Return the last reference parsed, if it is not equal to message_id.
|
|
*/
|
|
static char *
|
|
parse_references (void *ctx,
|
|
const char *message_id,
|
|
GHashTable *hash,
|
|
const char *refs)
|
|
{
|
|
char *ref, *last_ref = NULL;
|
|
|
|
if (refs == NULL || *refs == '\0')
|
|
return NULL;
|
|
|
|
while (*refs) {
|
|
ref = _parse_message_id (ctx, refs, &refs);
|
|
|
|
if (ref && strcmp (ref, message_id)) {
|
|
g_hash_table_insert (hash, ref, NULL);
|
|
last_ref = ref;
|
|
}
|
|
}
|
|
|
|
/* The return value of this function is used to add a parent
|
|
* reference to the database. We should avoid making a message
|
|
* its own parent, thus the above check.
|
|
*/
|
|
return last_ref;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_create (const char *path, notmuch_database_t **database)
|
|
{
|
|
char *status_string = NULL;
|
|
notmuch_status_t status;
|
|
|
|
status = notmuch_database_create_verbose (path, database,
|
|
&status_string);
|
|
|
|
if (status_string) {
|
|
fputs (status_string, stderr);
|
|
free (status_string);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_create_verbose (const char *path,
|
|
notmuch_database_t **database,
|
|
char **status_string)
|
|
{
|
|
notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
|
|
notmuch_database_t *notmuch = NULL;
|
|
char *notmuch_path = NULL;
|
|
char *message = NULL;
|
|
struct stat st;
|
|
int err;
|
|
|
|
if (path == NULL) {
|
|
message = strdup ("Error: Cannot create a database for a NULL path.\n");
|
|
status = NOTMUCH_STATUS_NULL_POINTER;
|
|
goto DONE;
|
|
}
|
|
|
|
if (path[0] != '/') {
|
|
message = strdup ("Error: Database path must be absolute.\n");
|
|
status = NOTMUCH_STATUS_PATH_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
err = stat (path, &st);
|
|
if (err) {
|
|
IGNORE_RESULT (asprintf (&message, "Error: Cannot create database at %s: %s.\n",
|
|
path, strerror (errno)));
|
|
status = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
if (! S_ISDIR (st.st_mode)) {
|
|
IGNORE_RESULT (asprintf (&message, "Error: Cannot create database at %s: "
|
|
"Not a directory.\n",
|
|
path));
|
|
status = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
notmuch_path = talloc_asprintf (NULL, "%s/%s", path, ".notmuch");
|
|
|
|
err = mkdir (notmuch_path, 0755);
|
|
|
|
if (err) {
|
|
IGNORE_RESULT (asprintf (&message, "Error: Cannot create directory %s: %s.\n",
|
|
notmuch_path, strerror (errno)));
|
|
status = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
status = notmuch_database_open_verbose (path,
|
|
NOTMUCH_DATABASE_MODE_READ_WRITE,
|
|
¬much, &message);
|
|
if (status)
|
|
goto DONE;
|
|
|
|
/* Upgrade doesn't add these feature to existing databases, but
|
|
* new databases have them. */
|
|
notmuch->features |= NOTMUCH_FEATURE_FROM_SUBJECT_ID_VALUES;
|
|
notmuch->features |= NOTMUCH_FEATURE_INDEXED_MIMETYPES;
|
|
|
|
status = notmuch_database_upgrade (notmuch, NULL, NULL);
|
|
if (status) {
|
|
notmuch_database_close(notmuch);
|
|
notmuch = NULL;
|
|
}
|
|
|
|
DONE:
|
|
if (notmuch_path)
|
|
talloc_free (notmuch_path);
|
|
|
|
if (message) {
|
|
if (status_string)
|
|
*status_string = message;
|
|
else
|
|
free (message);
|
|
}
|
|
if (database)
|
|
*database = notmuch;
|
|
else
|
|
talloc_free (notmuch);
|
|
return status;
|
|
}
|
|
|
|
notmuch_status_t
|
|
_notmuch_database_ensure_writable (notmuch_database_t *notmuch)
|
|
{
|
|
if (notmuch->mode == NOTMUCH_DATABASE_MODE_READ_ONLY) {
|
|
_notmuch_database_log (notmuch, "Cannot write to a read-only database.\n");
|
|
return NOTMUCH_STATUS_READ_ONLY_DATABASE;
|
|
}
|
|
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
/* Allocate a revision number for the next change. */
|
|
unsigned long
|
|
_notmuch_database_new_revision (notmuch_database_t *notmuch)
|
|
{
|
|
unsigned long new_revision = notmuch->revision + 1;
|
|
|
|
/* If we're in an atomic section, hold off on updating the
|
|
* committed revision number until we commit the atomic section.
|
|
*/
|
|
if (notmuch->atomic_nesting)
|
|
notmuch->atomic_dirty = TRUE;
|
|
else
|
|
notmuch->revision = new_revision;
|
|
|
|
return new_revision;
|
|
}
|
|
|
|
/* Parse a database features string from the given database version.
|
|
* Returns the feature bit set.
|
|
*
|
|
* For version < 3, this ignores the features string and returns a
|
|
* hard-coded set of features.
|
|
*
|
|
* If there are unrecognized features that are required to open the
|
|
* database in mode (which should be 'r' or 'w'), return a
|
|
* comma-separated list of unrecognized but required features in
|
|
* *incompat_out suitable for presenting to the user. *incompat_out
|
|
* will be allocated from ctx.
|
|
*/
|
|
static _notmuch_features
|
|
_parse_features (const void *ctx, const char *features, unsigned int version,
|
|
char mode, char **incompat_out)
|
|
{
|
|
_notmuch_features res = static_cast<_notmuch_features>(0);
|
|
unsigned int namelen, i;
|
|
size_t llen = 0;
|
|
const char *flags;
|
|
|
|
/* Prior to database version 3, features were implied by the
|
|
* version number. */
|
|
if (version == 0)
|
|
return NOTMUCH_FEATURES_V0;
|
|
else if (version == 1)
|
|
return NOTMUCH_FEATURES_V1;
|
|
else if (version == 2)
|
|
return NOTMUCH_FEATURES_V2;
|
|
|
|
/* Parse the features string */
|
|
while ((features = strtok_len_c (features + llen, "\n", &llen)) != NULL) {
|
|
flags = strchr (features, '\t');
|
|
if (! flags || flags > features + llen)
|
|
continue;
|
|
namelen = flags - features;
|
|
|
|
for (i = 0; i < ARRAY_SIZE (feature_names); ++i) {
|
|
if (strlen (feature_names[i].name) == namelen &&
|
|
strncmp (feature_names[i].name, features, namelen) == 0) {
|
|
res |= feature_names[i].value;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i == ARRAY_SIZE (feature_names) && incompat_out) {
|
|
/* Unrecognized feature */
|
|
const char *have = strchr (flags, mode);
|
|
if (have && have < features + llen) {
|
|
/* This feature is required to access this database in
|
|
* 'mode', but we don't understand it. */
|
|
if (! *incompat_out)
|
|
*incompat_out = talloc_strdup (ctx, "");
|
|
*incompat_out = talloc_asprintf_append_buffer (
|
|
*incompat_out, "%s%.*s", **incompat_out ? ", " : "",
|
|
namelen, features);
|
|
}
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static char *
|
|
_print_features (const void *ctx, unsigned int features)
|
|
{
|
|
unsigned int i;
|
|
char *res = talloc_strdup (ctx, "");
|
|
|
|
for (i = 0; i < ARRAY_SIZE (feature_names); ++i)
|
|
if (features & feature_names[i].value)
|
|
res = talloc_asprintf_append_buffer (
|
|
res, "%s\t%s\n", feature_names[i].name, feature_names[i].flags);
|
|
|
|
return res;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_open (const char *path,
|
|
notmuch_database_mode_t mode,
|
|
notmuch_database_t **database)
|
|
{
|
|
char *status_string = NULL;
|
|
notmuch_status_t status;
|
|
|
|
status = notmuch_database_open_verbose (path, mode, database,
|
|
&status_string);
|
|
|
|
if (status_string) {
|
|
fputs (status_string, stderr);
|
|
free (status_string);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_open_verbose (const char *path,
|
|
notmuch_database_mode_t mode,
|
|
notmuch_database_t **database,
|
|
char **status_string)
|
|
{
|
|
notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
|
|
void *local = talloc_new (NULL);
|
|
notmuch_database_t *notmuch = NULL;
|
|
char *notmuch_path, *xapian_path, *incompat_features;
|
|
char *message = NULL;
|
|
struct stat st;
|
|
int err;
|
|
unsigned int i, version;
|
|
static int initialized = 0;
|
|
|
|
if (path == NULL) {
|
|
message = strdup ("Error: Cannot open a database for a NULL path.\n");
|
|
status = NOTMUCH_STATUS_NULL_POINTER;
|
|
goto DONE;
|
|
}
|
|
|
|
if (path[0] != '/') {
|
|
message = strdup ("Error: Database path must be absolute.\n");
|
|
status = NOTMUCH_STATUS_PATH_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
if (! (notmuch_path = talloc_asprintf (local, "%s/%s", path, ".notmuch"))) {
|
|
message = strdup ("Out of memory\n");
|
|
status = NOTMUCH_STATUS_OUT_OF_MEMORY;
|
|
goto DONE;
|
|
}
|
|
|
|
err = stat (notmuch_path, &st);
|
|
if (err) {
|
|
IGNORE_RESULT (asprintf (&message, "Error opening database at %s: %s\n",
|
|
notmuch_path, strerror (errno)));
|
|
status = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
if (! (xapian_path = talloc_asprintf (local, "%s/%s", notmuch_path, "xapian"))) {
|
|
message = strdup ("Out of memory\n");
|
|
status = NOTMUCH_STATUS_OUT_OF_MEMORY;
|
|
goto DONE;
|
|
}
|
|
|
|
/* Initialize the GLib type system and threads */
|
|
#if !GLIB_CHECK_VERSION(2, 35, 1)
|
|
g_type_init ();
|
|
#endif
|
|
|
|
/* Initialize gmime */
|
|
if (! initialized) {
|
|
g_mime_init (GMIME_ENABLE_RFC2047_WORKAROUNDS);
|
|
initialized = 1;
|
|
}
|
|
|
|
notmuch = talloc_zero (NULL, notmuch_database_t);
|
|
notmuch->exception_reported = FALSE;
|
|
notmuch->status_string = NULL;
|
|
notmuch->path = talloc_strdup (notmuch, path);
|
|
|
|
if (notmuch->path[strlen (notmuch->path) - 1] == '/')
|
|
notmuch->path[strlen (notmuch->path) - 1] = '\0';
|
|
|
|
notmuch->mode = mode;
|
|
notmuch->atomic_nesting = 0;
|
|
try {
|
|
string last_thread_id;
|
|
string last_mod;
|
|
|
|
if (mode == NOTMUCH_DATABASE_MODE_READ_WRITE) {
|
|
notmuch->xapian_db = new Xapian::WritableDatabase (xapian_path,
|
|
Xapian::DB_CREATE_OR_OPEN);
|
|
} else {
|
|
notmuch->xapian_db = new Xapian::Database (xapian_path);
|
|
}
|
|
|
|
/* Check version. As of database version 3, we represent
|
|
* changes in terms of features, so assume a version bump
|
|
* means a dramatically incompatible change. */
|
|
version = notmuch_database_get_version (notmuch);
|
|
if (version > NOTMUCH_DATABASE_VERSION) {
|
|
IGNORE_RESULT (asprintf (&message,
|
|
"Error: Notmuch database at %s\n"
|
|
" has a newer database format version (%u) than supported by this\n"
|
|
" version of notmuch (%u).\n",
|
|
notmuch_path, version, NOTMUCH_DATABASE_VERSION));
|
|
notmuch->mode = NOTMUCH_DATABASE_MODE_READ_ONLY;
|
|
notmuch_database_destroy (notmuch);
|
|
notmuch = NULL;
|
|
status = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
/* Check features. */
|
|
incompat_features = NULL;
|
|
notmuch->features = _parse_features (
|
|
local, notmuch->xapian_db->get_metadata ("features").c_str (),
|
|
version, mode == NOTMUCH_DATABASE_MODE_READ_WRITE ? 'w' : 'r',
|
|
&incompat_features);
|
|
if (incompat_features) {
|
|
IGNORE_RESULT (asprintf (&message,
|
|
"Error: Notmuch database at %s\n"
|
|
" requires features (%s)\n"
|
|
" not supported by this version of notmuch.\n",
|
|
notmuch_path, incompat_features));
|
|
notmuch->mode = NOTMUCH_DATABASE_MODE_READ_ONLY;
|
|
notmuch_database_destroy (notmuch);
|
|
notmuch = NULL;
|
|
status = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
notmuch->last_doc_id = notmuch->xapian_db->get_lastdocid ();
|
|
last_thread_id = notmuch->xapian_db->get_metadata ("last_thread_id");
|
|
if (last_thread_id.empty ()) {
|
|
notmuch->last_thread_id = 0;
|
|
} else {
|
|
const char *str;
|
|
char *end;
|
|
|
|
str = last_thread_id.c_str ();
|
|
notmuch->last_thread_id = strtoull (str, &end, 16);
|
|
if (*end != '\0')
|
|
INTERNAL_ERROR ("Malformed database last_thread_id: %s", str);
|
|
}
|
|
|
|
/* Get current highest revision number. */
|
|
last_mod = notmuch->xapian_db->get_value_upper_bound (
|
|
NOTMUCH_VALUE_LAST_MOD);
|
|
if (last_mod.empty ())
|
|
notmuch->revision = 0;
|
|
else
|
|
notmuch->revision = Xapian::sortable_unserialise (last_mod);
|
|
notmuch->uuid = talloc_strdup (
|
|
notmuch, notmuch->xapian_db->get_uuid ().c_str ());
|
|
|
|
notmuch->query_parser = new Xapian::QueryParser;
|
|
notmuch->term_gen = new Xapian::TermGenerator;
|
|
notmuch->term_gen->set_stemmer (Xapian::Stem ("english"));
|
|
notmuch->value_range_processor = new Xapian::NumberValueRangeProcessor (NOTMUCH_VALUE_TIMESTAMP);
|
|
notmuch->date_range_processor = new ParseTimeValueRangeProcessor (NOTMUCH_VALUE_TIMESTAMP);
|
|
notmuch->last_mod_range_processor = new Xapian::NumberValueRangeProcessor (NOTMUCH_VALUE_LAST_MOD, "lastmod:");
|
|
|
|
notmuch->query_parser->set_default_op (Xapian::Query::OP_AND);
|
|
notmuch->query_parser->set_database (*notmuch->xapian_db);
|
|
notmuch->query_parser->set_stemmer (Xapian::Stem ("english"));
|
|
notmuch->query_parser->set_stemming_strategy (Xapian::QueryParser::STEM_SOME);
|
|
notmuch->query_parser->add_valuerangeprocessor (notmuch->value_range_processor);
|
|
notmuch->query_parser->add_valuerangeprocessor (notmuch->date_range_processor);
|
|
notmuch->query_parser->add_valuerangeprocessor (notmuch->last_mod_range_processor);
|
|
|
|
for (i = 0; i < ARRAY_SIZE (BOOLEAN_PREFIX_EXTERNAL); i++) {
|
|
prefix_t *prefix = &BOOLEAN_PREFIX_EXTERNAL[i];
|
|
notmuch->query_parser->add_boolean_prefix (prefix->name,
|
|
prefix->prefix);
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE (PROBABILISTIC_PREFIX); i++) {
|
|
prefix_t *prefix = &PROBABILISTIC_PREFIX[i];
|
|
notmuch->query_parser->add_prefix (prefix->name, prefix->prefix);
|
|
}
|
|
} catch (const Xapian::Error &error) {
|
|
IGNORE_RESULT (asprintf (&message, "A Xapian exception occurred opening database: %s\n",
|
|
error.get_msg().c_str()));
|
|
notmuch_database_destroy (notmuch);
|
|
notmuch = NULL;
|
|
status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
|
|
}
|
|
|
|
DONE:
|
|
talloc_free (local);
|
|
|
|
if (message) {
|
|
if (status_string)
|
|
*status_string = message;
|
|
else
|
|
free (message);
|
|
}
|
|
|
|
if (database)
|
|
*database = notmuch;
|
|
else
|
|
talloc_free (notmuch);
|
|
return status;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_close (notmuch_database_t *notmuch)
|
|
{
|
|
notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
|
|
|
|
/* Many Xapian objects (and thus notmuch objects) hold references to
|
|
* the database, so merely deleting the database may not suffice to
|
|
* close it. Thus, we explicitly close it here. */
|
|
if (notmuch->xapian_db != NULL) {
|
|
try {
|
|
/* If there's an outstanding transaction, it's unclear if
|
|
* closing the Xapian database commits everything up to
|
|
* that transaction, or may discard committed (but
|
|
* unflushed) transactions. To be certain, explicitly
|
|
* cancel any outstanding transaction before closing. */
|
|
if (notmuch->mode == NOTMUCH_DATABASE_MODE_READ_WRITE &&
|
|
notmuch->atomic_nesting)
|
|
(static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db))
|
|
->cancel_transaction ();
|
|
|
|
/* Close the database. This implicitly flushes
|
|
* outstanding changes. */
|
|
notmuch->xapian_db->close();
|
|
} catch (const Xapian::Error &error) {
|
|
status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
|
|
if (! notmuch->exception_reported) {
|
|
_notmuch_database_log (notmuch, "Error: A Xapian exception occurred closing database: %s\n",
|
|
error.get_msg().c_str());
|
|
}
|
|
}
|
|
}
|
|
|
|
delete notmuch->term_gen;
|
|
notmuch->term_gen = NULL;
|
|
delete notmuch->query_parser;
|
|
notmuch->query_parser = NULL;
|
|
delete notmuch->xapian_db;
|
|
notmuch->xapian_db = NULL;
|
|
delete notmuch->value_range_processor;
|
|
notmuch->value_range_processor = NULL;
|
|
delete notmuch->date_range_processor;
|
|
notmuch->date_range_processor = NULL;
|
|
delete notmuch->last_mod_range_processor;
|
|
notmuch->last_mod_range_processor = NULL;
|
|
|
|
return status;
|
|
}
|
|
|
|
#if HAVE_XAPIAN_COMPACT
|
|
static int
|
|
unlink_cb (const char *path,
|
|
unused (const struct stat *sb),
|
|
unused (int type),
|
|
unused (struct FTW *ftw))
|
|
{
|
|
return remove (path);
|
|
}
|
|
|
|
static int
|
|
rmtree (const char *path)
|
|
{
|
|
return nftw (path, unlink_cb, 64, FTW_DEPTH | FTW_PHYS);
|
|
}
|
|
|
|
class NotmuchCompactor : public Xapian::Compactor
|
|
{
|
|
notmuch_compact_status_cb_t status_cb;
|
|
void *status_closure;
|
|
|
|
public:
|
|
NotmuchCompactor(notmuch_compact_status_cb_t cb, void *closure) :
|
|
status_cb (cb), status_closure (closure) { }
|
|
|
|
virtual void
|
|
set_status (const std::string &table, const std::string &status)
|
|
{
|
|
char *msg;
|
|
|
|
if (status_cb == NULL)
|
|
return;
|
|
|
|
if (status.length () == 0)
|
|
msg = talloc_asprintf (NULL, "compacting table %s", table.c_str());
|
|
else
|
|
msg = talloc_asprintf (NULL, " %s", status.c_str());
|
|
|
|
if (msg == NULL) {
|
|
return;
|
|
}
|
|
|
|
status_cb (msg, status_closure);
|
|
talloc_free (msg);
|
|
}
|
|
};
|
|
|
|
/* Compacts the given database, optionally saving the original database
|
|
* in backup_path. Additionally, a callback function can be provided to
|
|
* give the user feedback on the progress of the (likely long-lived)
|
|
* compaction process.
|
|
*
|
|
* The backup path must point to a directory on the same volume as the
|
|
* original database. Passing a NULL backup_path will result in the
|
|
* uncompacted database being deleted after compaction has finished.
|
|
* Note that the database write lock will be held during the
|
|
* compaction process to protect data integrity.
|
|
*/
|
|
notmuch_status_t
|
|
notmuch_database_compact (const char *path,
|
|
const char *backup_path,
|
|
notmuch_compact_status_cb_t status_cb,
|
|
void *closure)
|
|
{
|
|
void *local;
|
|
char *notmuch_path, *xapian_path, *compact_xapian_path;
|
|
notmuch_status_t ret = NOTMUCH_STATUS_SUCCESS;
|
|
notmuch_database_t *notmuch = NULL;
|
|
struct stat statbuf;
|
|
notmuch_bool_t keep_backup;
|
|
char *message = NULL;
|
|
|
|
local = talloc_new (NULL);
|
|
if (! local)
|
|
return NOTMUCH_STATUS_OUT_OF_MEMORY;
|
|
|
|
ret = notmuch_database_open_verbose (path,
|
|
NOTMUCH_DATABASE_MODE_READ_WRITE,
|
|
¬much,
|
|
&message);
|
|
if (ret) {
|
|
if (status_cb) status_cb (message, closure);
|
|
goto DONE;
|
|
}
|
|
|
|
if (! (notmuch_path = talloc_asprintf (local, "%s/%s", path, ".notmuch"))) {
|
|
ret = NOTMUCH_STATUS_OUT_OF_MEMORY;
|
|
goto DONE;
|
|
}
|
|
|
|
if (! (xapian_path = talloc_asprintf (local, "%s/%s", notmuch_path, "xapian"))) {
|
|
ret = NOTMUCH_STATUS_OUT_OF_MEMORY;
|
|
goto DONE;
|
|
}
|
|
|
|
if (! (compact_xapian_path = talloc_asprintf (local, "%s.compact", xapian_path))) {
|
|
ret = NOTMUCH_STATUS_OUT_OF_MEMORY;
|
|
goto DONE;
|
|
}
|
|
|
|
if (backup_path == NULL) {
|
|
if (! (backup_path = talloc_asprintf (local, "%s.old", xapian_path))) {
|
|
ret = NOTMUCH_STATUS_OUT_OF_MEMORY;
|
|
goto DONE;
|
|
}
|
|
keep_backup = FALSE;
|
|
}
|
|
else {
|
|
keep_backup = TRUE;
|
|
}
|
|
|
|
if (stat (backup_path, &statbuf) != -1) {
|
|
_notmuch_database_log (notmuch, "Path already exists: %s\n", backup_path);
|
|
ret = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
if (errno != ENOENT) {
|
|
_notmuch_database_log (notmuch, "Unknown error while stat()ing path: %s\n",
|
|
strerror (errno));
|
|
ret = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
/* Unconditionally attempt to remove old work-in-progress database (if
|
|
* any). This is "protected" by database lock. If this fails due to write
|
|
* errors (etc), the following code will fail and provide error message.
|
|
*/
|
|
(void) rmtree (compact_xapian_path);
|
|
|
|
try {
|
|
NotmuchCompactor compactor (status_cb, closure);
|
|
|
|
compactor.set_renumber (false);
|
|
compactor.add_source (xapian_path);
|
|
compactor.set_destdir (compact_xapian_path);
|
|
compactor.compact ();
|
|
} catch (const Xapian::Error &error) {
|
|
_notmuch_database_log (notmuch, "Error while compacting: %s\n", error.get_msg().c_str());
|
|
ret = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
|
|
goto DONE;
|
|
}
|
|
|
|
if (rename (xapian_path, backup_path)) {
|
|
_notmuch_database_log (notmuch, "Error moving %s to %s: %s\n",
|
|
xapian_path, backup_path, strerror (errno));
|
|
ret = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
if (rename (compact_xapian_path, xapian_path)) {
|
|
_notmuch_database_log (notmuch, "Error moving %s to %s: %s\n",
|
|
compact_xapian_path, xapian_path, strerror (errno));
|
|
ret = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
if (! keep_backup) {
|
|
if (rmtree (backup_path)) {
|
|
_notmuch_database_log (notmuch, "Error removing old database %s: %s\n",
|
|
backup_path, strerror (errno));
|
|
ret = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
}
|
|
|
|
DONE:
|
|
if (notmuch) {
|
|
notmuch_status_t ret2;
|
|
|
|
const char *str = notmuch_database_status_string (notmuch);
|
|
if (status_cb && str)
|
|
status_cb (str, closure);
|
|
|
|
ret2 = notmuch_database_destroy (notmuch);
|
|
|
|
/* don't clobber previous error status */
|
|
if (ret == NOTMUCH_STATUS_SUCCESS && ret2 != NOTMUCH_STATUS_SUCCESS)
|
|
ret = ret2;
|
|
}
|
|
|
|
talloc_free (local);
|
|
|
|
return ret;
|
|
}
|
|
#else
|
|
notmuch_status_t
|
|
notmuch_database_compact (unused (const char *path),
|
|
unused (const char *backup_path),
|
|
unused (notmuch_compact_status_cb_t status_cb),
|
|
unused (void *closure))
|
|
{
|
|
_notmuch_database_log (notmuch, "notmuch was compiled against a xapian version lacking compaction support.\n");
|
|
return NOTMUCH_STATUS_UNSUPPORTED_OPERATION;
|
|
}
|
|
#endif
|
|
|
|
notmuch_status_t
|
|
notmuch_database_destroy (notmuch_database_t *notmuch)
|
|
{
|
|
notmuch_status_t status;
|
|
|
|
status = notmuch_database_close (notmuch);
|
|
talloc_free (notmuch);
|
|
|
|
return status;
|
|
}
|
|
|
|
const char *
|
|
notmuch_database_get_path (notmuch_database_t *notmuch)
|
|
{
|
|
return notmuch->path;
|
|
}
|
|
|
|
unsigned int
|
|
notmuch_database_get_version (notmuch_database_t *notmuch)
|
|
{
|
|
unsigned int version;
|
|
string version_string;
|
|
const char *str;
|
|
char *end;
|
|
|
|
version_string = notmuch->xapian_db->get_metadata ("version");
|
|
if (version_string.empty ())
|
|
return 0;
|
|
|
|
str = version_string.c_str ();
|
|
if (str == NULL || *str == '\0')
|
|
return 0;
|
|
|
|
version = strtoul (str, &end, 10);
|
|
if (*end != '\0')
|
|
INTERNAL_ERROR ("Malformed database version: %s", str);
|
|
|
|
return version;
|
|
}
|
|
|
|
notmuch_bool_t
|
|
notmuch_database_needs_upgrade (notmuch_database_t *notmuch)
|
|
{
|
|
return notmuch->mode == NOTMUCH_DATABASE_MODE_READ_WRITE &&
|
|
((NOTMUCH_FEATURES_CURRENT & ~notmuch->features) ||
|
|
(notmuch_database_get_version (notmuch) < NOTMUCH_DATABASE_VERSION));
|
|
}
|
|
|
|
static volatile sig_atomic_t do_progress_notify = 0;
|
|
|
|
static void
|
|
handle_sigalrm (unused (int signal))
|
|
{
|
|
do_progress_notify = 1;
|
|
}
|
|
|
|
/* Upgrade the current database.
|
|
*
|
|
* After opening a database in read-write mode, the client should
|
|
* check if an upgrade is needed (notmuch_database_needs_upgrade) and
|
|
* if so, upgrade with this function before making any modifications.
|
|
*
|
|
* The optional progress_notify callback can be used by the caller to
|
|
* provide progress indication to the user. If non-NULL it will be
|
|
* called periodically with 'count' as the number of messages upgraded
|
|
* so far and 'total' the overall number of messages that will be
|
|
* converted.
|
|
*/
|
|
notmuch_status_t
|
|
notmuch_database_upgrade (notmuch_database_t *notmuch,
|
|
void (*progress_notify) (void *closure,
|
|
double progress),
|
|
void *closure)
|
|
{
|
|
void *local = talloc_new (NULL);
|
|
Xapian::TermIterator t, t_end;
|
|
Xapian::WritableDatabase *db;
|
|
struct sigaction action;
|
|
struct itimerval timerval;
|
|
notmuch_bool_t timer_is_active = FALSE;
|
|
enum _notmuch_features target_features, new_features;
|
|
notmuch_status_t status;
|
|
notmuch_private_status_t private_status;
|
|
notmuch_query_t *query = NULL;
|
|
unsigned int count = 0, total = 0;
|
|
|
|
status = _notmuch_database_ensure_writable (notmuch);
|
|
if (status)
|
|
return status;
|
|
|
|
db = static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db);
|
|
|
|
target_features = notmuch->features | NOTMUCH_FEATURES_CURRENT;
|
|
new_features = NOTMUCH_FEATURES_CURRENT & ~notmuch->features;
|
|
|
|
if (! notmuch_database_needs_upgrade (notmuch))
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
|
|
if (progress_notify) {
|
|
/* Set up our handler for SIGALRM */
|
|
memset (&action, 0, sizeof (struct sigaction));
|
|
action.sa_handler = handle_sigalrm;
|
|
sigemptyset (&action.sa_mask);
|
|
action.sa_flags = SA_RESTART;
|
|
sigaction (SIGALRM, &action, NULL);
|
|
|
|
/* Then start a timer to send SIGALRM once per second. */
|
|
timerval.it_interval.tv_sec = 1;
|
|
timerval.it_interval.tv_usec = 0;
|
|
timerval.it_value.tv_sec = 1;
|
|
timerval.it_value.tv_usec = 0;
|
|
setitimer (ITIMER_REAL, &timerval, NULL);
|
|
|
|
timer_is_active = TRUE;
|
|
}
|
|
|
|
/* Figure out how much total work we need to do. */
|
|
if (new_features &
|
|
(NOTMUCH_FEATURE_FILE_TERMS | NOTMUCH_FEATURE_BOOL_FOLDER |
|
|
NOTMUCH_FEATURE_LAST_MOD)) {
|
|
query = notmuch_query_create (notmuch, "");
|
|
unsigned msg_count;
|
|
|
|
status = notmuch_query_count_messages_st (query, &msg_count);
|
|
if (status)
|
|
goto DONE;
|
|
|
|
total += msg_count;
|
|
notmuch_query_destroy (query);
|
|
query = NULL;
|
|
}
|
|
if (new_features & NOTMUCH_FEATURE_DIRECTORY_DOCS) {
|
|
t_end = db->allterms_end ("XTIMESTAMP");
|
|
for (t = db->allterms_begin ("XTIMESTAMP"); t != t_end; t++)
|
|
++total;
|
|
}
|
|
if (new_features & NOTMUCH_FEATURE_GHOSTS) {
|
|
/* The ghost message upgrade converts all thread_id_*
|
|
* metadata values into ghost message documents. */
|
|
t_end = db->metadata_keys_end ("thread_id_");
|
|
for (t = db->metadata_keys_begin ("thread_id_"); t != t_end; ++t)
|
|
++total;
|
|
}
|
|
|
|
/* Perform the upgrade in a transaction. */
|
|
db->begin_transaction (true);
|
|
|
|
/* Set the target features so we write out changes in the desired
|
|
* format. */
|
|
notmuch->features = target_features;
|
|
|
|
/* Perform per-message upgrades. */
|
|
if (new_features &
|
|
(NOTMUCH_FEATURE_FILE_TERMS | NOTMUCH_FEATURE_BOOL_FOLDER |
|
|
NOTMUCH_FEATURE_LAST_MOD)) {
|
|
notmuch_messages_t *messages;
|
|
notmuch_message_t *message;
|
|
char *filename;
|
|
|
|
query = notmuch_query_create (notmuch, "");
|
|
|
|
status = notmuch_query_search_messages_st (query, &messages);
|
|
if (status)
|
|
goto DONE;
|
|
for (;
|
|
notmuch_messages_valid (messages);
|
|
notmuch_messages_move_to_next (messages))
|
|
{
|
|
if (do_progress_notify) {
|
|
progress_notify (closure, (double) count / total);
|
|
do_progress_notify = 0;
|
|
}
|
|
|
|
message = notmuch_messages_get (messages);
|
|
|
|
/* Before version 1, each message document had its
|
|
* filename in the data field. Copy that into the new
|
|
* format by calling notmuch_message_add_filename.
|
|
*/
|
|
if (new_features & NOTMUCH_FEATURE_FILE_TERMS) {
|
|
filename = _notmuch_message_talloc_copy_data (message);
|
|
if (filename && *filename != '\0') {
|
|
_notmuch_message_add_filename (message, filename);
|
|
_notmuch_message_clear_data (message);
|
|
}
|
|
talloc_free (filename);
|
|
}
|
|
|
|
/* Prior to version 2, the "folder:" prefix was
|
|
* probabilistic and stemmed. Change it to the current
|
|
* boolean prefix. Add "path:" prefixes while at it.
|
|
*/
|
|
if (new_features & NOTMUCH_FEATURE_BOOL_FOLDER)
|
|
_notmuch_message_upgrade_folder (message);
|
|
|
|
/* Prior to NOTMUCH_FEATURE_LAST_MOD, messages did not
|
|
* track modification revisions. Give all messages the
|
|
* next available revision; since we just started tracking
|
|
* revisions for this database, that will be 1.
|
|
*/
|
|
if (new_features & NOTMUCH_FEATURE_LAST_MOD)
|
|
_notmuch_message_upgrade_last_mod (message);
|
|
|
|
_notmuch_message_sync (message);
|
|
|
|
notmuch_message_destroy (message);
|
|
|
|
count++;
|
|
}
|
|
|
|
notmuch_query_destroy (query);
|
|
query = NULL;
|
|
}
|
|
|
|
/* Perform per-directory upgrades. */
|
|
|
|
/* Before version 1 we stored directory timestamps in
|
|
* XTIMESTAMP documents instead of the current XDIRECTORY
|
|
* documents. So copy those as well. */
|
|
if (new_features & NOTMUCH_FEATURE_DIRECTORY_DOCS) {
|
|
t_end = notmuch->xapian_db->allterms_end ("XTIMESTAMP");
|
|
|
|
for (t = notmuch->xapian_db->allterms_begin ("XTIMESTAMP");
|
|
t != t_end;
|
|
t++)
|
|
{
|
|
Xapian::PostingIterator p, p_end;
|
|
std::string term = *t;
|
|
|
|
p_end = notmuch->xapian_db->postlist_end (term);
|
|
|
|
for (p = notmuch->xapian_db->postlist_begin (term);
|
|
p != p_end;
|
|
p++)
|
|
{
|
|
Xapian::Document document;
|
|
time_t mtime;
|
|
notmuch_directory_t *directory;
|
|
|
|
if (do_progress_notify) {
|
|
progress_notify (closure, (double) count / total);
|
|
do_progress_notify = 0;
|
|
}
|
|
|
|
document = find_document_for_doc_id (notmuch, *p);
|
|
mtime = Xapian::sortable_unserialise (
|
|
document.get_value (NOTMUCH_VALUE_TIMESTAMP));
|
|
|
|
directory = _notmuch_directory_create (notmuch, term.c_str() + 10,
|
|
NOTMUCH_FIND_CREATE, &status);
|
|
notmuch_directory_set_mtime (directory, mtime);
|
|
notmuch_directory_destroy (directory);
|
|
|
|
db->delete_document (*p);
|
|
}
|
|
|
|
++count;
|
|
}
|
|
}
|
|
|
|
/* Perform metadata upgrades. */
|
|
|
|
/* Prior to NOTMUCH_FEATURE_GHOSTS, thread IDs for missing
|
|
* messages were stored as database metadata. Change these to
|
|
* ghost messages.
|
|
*/
|
|
if (new_features & NOTMUCH_FEATURE_GHOSTS) {
|
|
notmuch_message_t *message;
|
|
std::string message_id, thread_id;
|
|
|
|
t_end = db->metadata_keys_end (NOTMUCH_METADATA_THREAD_ID_PREFIX);
|
|
for (t = db->metadata_keys_begin (NOTMUCH_METADATA_THREAD_ID_PREFIX);
|
|
t != t_end; ++t) {
|
|
if (do_progress_notify) {
|
|
progress_notify (closure, (double) count / total);
|
|
do_progress_notify = 0;
|
|
}
|
|
|
|
message_id = (*t).substr (
|
|
strlen (NOTMUCH_METADATA_THREAD_ID_PREFIX));
|
|
thread_id = db->get_metadata (*t);
|
|
|
|
/* Create ghost message */
|
|
message = _notmuch_message_create_for_message_id (
|
|
notmuch, message_id.c_str (), &private_status);
|
|
if (private_status == NOTMUCH_PRIVATE_STATUS_SUCCESS) {
|
|
/* Document already exists; ignore the stored thread ID */
|
|
} else if (private_status ==
|
|
NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND) {
|
|
private_status = _notmuch_message_initialize_ghost (
|
|
message, thread_id.c_str ());
|
|
if (! private_status)
|
|
_notmuch_message_sync (message);
|
|
}
|
|
|
|
if (private_status) {
|
|
_notmuch_database_log (notmuch,
|
|
"Upgrade failed while creating ghost messages.\n");
|
|
status = COERCE_STATUS (private_status, "Unexpected status from _notmuch_message_initialize_ghost");
|
|
goto DONE;
|
|
}
|
|
|
|
/* Clear saved metadata thread ID */
|
|
db->set_metadata (*t, "");
|
|
|
|
++count;
|
|
}
|
|
}
|
|
|
|
status = NOTMUCH_STATUS_SUCCESS;
|
|
db->set_metadata ("features", _print_features (local, notmuch->features));
|
|
db->set_metadata ("version", STRINGIFY (NOTMUCH_DATABASE_VERSION));
|
|
|
|
DONE:
|
|
if (status == NOTMUCH_STATUS_SUCCESS)
|
|
db->commit_transaction ();
|
|
else
|
|
db->cancel_transaction ();
|
|
|
|
if (timer_is_active) {
|
|
/* Now stop the timer. */
|
|
timerval.it_interval.tv_sec = 0;
|
|
timerval.it_interval.tv_usec = 0;
|
|
timerval.it_value.tv_sec = 0;
|
|
timerval.it_value.tv_usec = 0;
|
|
setitimer (ITIMER_REAL, &timerval, NULL);
|
|
|
|
/* And disable the signal handler. */
|
|
action.sa_handler = SIG_IGN;
|
|
sigaction (SIGALRM, &action, NULL);
|
|
}
|
|
|
|
if (query)
|
|
notmuch_query_destroy (query);
|
|
|
|
talloc_free (local);
|
|
return status;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_begin_atomic (notmuch_database_t *notmuch)
|
|
{
|
|
if (notmuch->mode == NOTMUCH_DATABASE_MODE_READ_ONLY ||
|
|
notmuch->atomic_nesting > 0)
|
|
goto DONE;
|
|
|
|
try {
|
|
(static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db))->begin_transaction (false);
|
|
} catch (const Xapian::Error &error) {
|
|
_notmuch_database_log (notmuch, "A Xapian exception occurred beginning transaction: %s.\n",
|
|
error.get_msg().c_str());
|
|
notmuch->exception_reported = TRUE;
|
|
return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
|
|
}
|
|
|
|
DONE:
|
|
notmuch->atomic_nesting++;
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_end_atomic (notmuch_database_t *notmuch)
|
|
{
|
|
Xapian::WritableDatabase *db;
|
|
|
|
if (notmuch->atomic_nesting == 0)
|
|
return NOTMUCH_STATUS_UNBALANCED_ATOMIC;
|
|
|
|
if (notmuch->mode == NOTMUCH_DATABASE_MODE_READ_ONLY ||
|
|
notmuch->atomic_nesting > 1)
|
|
goto DONE;
|
|
|
|
db = static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db);
|
|
try {
|
|
db->commit_transaction ();
|
|
|
|
/* This is a hack for testing. Xapian never flushes on a
|
|
* non-flushed commit, even if the flush threshold is 1.
|
|
* However, we rely on flushing to test atomicity. */
|
|
const char *thresh = getenv ("XAPIAN_FLUSH_THRESHOLD");
|
|
if (thresh && atoi (thresh) == 1)
|
|
db->flush ();
|
|
} catch (const Xapian::Error &error) {
|
|
_notmuch_database_log (notmuch, "A Xapian exception occurred committing transaction: %s.\n",
|
|
error.get_msg().c_str());
|
|
notmuch->exception_reported = TRUE;
|
|
return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
|
|
}
|
|
|
|
if (notmuch->atomic_dirty) {
|
|
++notmuch->revision;
|
|
notmuch->atomic_dirty = FALSE;
|
|
}
|
|
|
|
DONE:
|
|
notmuch->atomic_nesting--;
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
unsigned long
|
|
notmuch_database_get_revision (notmuch_database_t *notmuch,
|
|
const char **uuid)
|
|
{
|
|
if (uuid)
|
|
*uuid = notmuch->uuid;
|
|
return notmuch->revision;
|
|
}
|
|
|
|
/* We allow the user to use arbitrarily long paths for directories. But
|
|
* we have a term-length limit. So if we exceed that, we'll use the
|
|
* SHA-1 of the path for the database term.
|
|
*
|
|
* Note: This function may return the original value of 'path'. If it
|
|
* does not, then the caller is responsible to free() the returned
|
|
* value.
|
|
*/
|
|
const char *
|
|
_notmuch_database_get_directory_db_path (const char *path)
|
|
{
|
|
int term_len = strlen (_find_prefix ("directory")) + strlen (path);
|
|
|
|
if (term_len > NOTMUCH_TERM_MAX)
|
|
return _notmuch_sha1_of_string (path);
|
|
else
|
|
return path;
|
|
}
|
|
|
|
/* Given a path, split it into two parts: the directory part is all
|
|
* components except for the last, and the basename is that last
|
|
* component. Getting the return-value for either part is optional
|
|
* (the caller can pass NULL).
|
|
*
|
|
* The original 'path' can represent either a regular file or a
|
|
* directory---the splitting will be carried out in the same way in
|
|
* either case. Trailing slashes on 'path' will be ignored, and any
|
|
* cases of multiple '/' characters appearing in series will be
|
|
* treated as a single '/'.
|
|
*
|
|
* Allocation (if any) will have 'ctx' as the talloc owner. But
|
|
* pointers will be returned within the original path string whenever
|
|
* possible.
|
|
*
|
|
* Note: If 'path' is non-empty and contains no non-trailing slash,
|
|
* (that is, consists of a filename with no parent directory), then
|
|
* the directory returned will be an empty string. However, if 'path'
|
|
* is an empty string, then both directory and basename will be
|
|
* returned as NULL.
|
|
*/
|
|
notmuch_status_t
|
|
_notmuch_database_split_path (void *ctx,
|
|
const char *path,
|
|
const char **directory,
|
|
const char **basename)
|
|
{
|
|
const char *slash;
|
|
|
|
if (path == NULL || *path == '\0') {
|
|
if (directory)
|
|
*directory = NULL;
|
|
if (basename)
|
|
*basename = NULL;
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
/* Find the last slash (not counting a trailing slash), if any. */
|
|
|
|
slash = path + strlen (path) - 1;
|
|
|
|
/* First, skip trailing slashes. */
|
|
while (slash != path) {
|
|
if (*slash != '/')
|
|
break;
|
|
|
|
--slash;
|
|
}
|
|
|
|
/* Then, find a slash. */
|
|
while (slash != path) {
|
|
if (*slash == '/')
|
|
break;
|
|
|
|
if (basename)
|
|
*basename = slash;
|
|
|
|
--slash;
|
|
}
|
|
|
|
/* Finally, skip multiple slashes. */
|
|
while (slash != path) {
|
|
if (*slash != '/')
|
|
break;
|
|
|
|
--slash;
|
|
}
|
|
|
|
if (slash == path) {
|
|
if (directory)
|
|
*directory = talloc_strdup (ctx, "");
|
|
if (basename)
|
|
*basename = path;
|
|
} else {
|
|
if (directory)
|
|
*directory = talloc_strndup (ctx, path, slash - path + 1);
|
|
}
|
|
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
/* Find the document ID of the specified directory.
|
|
*
|
|
* If (flags & NOTMUCH_FIND_CREATE), a new directory document will be
|
|
* created if one does not exist for 'path'. Otherwise, if the
|
|
* directory document does not exist, this sets *directory_id to
|
|
* ((unsigned int)-1) and returns NOTMUCH_STATUS_SUCCESS.
|
|
*/
|
|
notmuch_status_t
|
|
_notmuch_database_find_directory_id (notmuch_database_t *notmuch,
|
|
const char *path,
|
|
notmuch_find_flags_t flags,
|
|
unsigned int *directory_id)
|
|
{
|
|
notmuch_directory_t *directory;
|
|
notmuch_status_t status;
|
|
|
|
if (path == NULL) {
|
|
*directory_id = 0;
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
directory = _notmuch_directory_create (notmuch, path, flags, &status);
|
|
if (status || !directory) {
|
|
*directory_id = -1;
|
|
return status;
|
|
}
|
|
|
|
*directory_id = _notmuch_directory_get_document_id (directory);
|
|
|
|
notmuch_directory_destroy (directory);
|
|
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
const char *
|
|
_notmuch_database_get_directory_path (void *ctx,
|
|
notmuch_database_t *notmuch,
|
|
unsigned int doc_id)
|
|
{
|
|
Xapian::Document document;
|
|
|
|
document = find_document_for_doc_id (notmuch, doc_id);
|
|
|
|
return talloc_strdup (ctx, document.get_data ().c_str ());
|
|
}
|
|
|
|
/* Given a legal 'filename' for the database, (either relative to
|
|
* database path or absolute with initial components identical to
|
|
* database path), return a new string (with 'ctx' as the talloc
|
|
* owner) suitable for use as a direntry term value.
|
|
*
|
|
* If (flags & NOTMUCH_FIND_CREATE), the necessary directory documents
|
|
* will be created in the database as needed. Otherwise, if the
|
|
* necessary directory documents do not exist, this sets
|
|
* *direntry to NULL and returns NOTMUCH_STATUS_SUCCESS.
|
|
*/
|
|
notmuch_status_t
|
|
_notmuch_database_filename_to_direntry (void *ctx,
|
|
notmuch_database_t *notmuch,
|
|
const char *filename,
|
|
notmuch_find_flags_t flags,
|
|
char **direntry)
|
|
{
|
|
const char *relative, *directory, *basename;
|
|
Xapian::docid directory_id;
|
|
notmuch_status_t status;
|
|
|
|
relative = _notmuch_database_relative_path (notmuch, filename);
|
|
|
|
status = _notmuch_database_split_path (ctx, relative,
|
|
&directory, &basename);
|
|
if (status)
|
|
return status;
|
|
|
|
status = _notmuch_database_find_directory_id (notmuch, directory, flags,
|
|
&directory_id);
|
|
if (status || directory_id == (unsigned int)-1) {
|
|
*direntry = NULL;
|
|
return status;
|
|
}
|
|
|
|
*direntry = talloc_asprintf (ctx, "%u:%s", directory_id, basename);
|
|
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
/* Given a legal 'path' for the database, return the relative path.
|
|
*
|
|
* The return value will be a pointer to the original path contents,
|
|
* and will be either the original string (if 'path' was relative) or
|
|
* a portion of the string (if path was absolute and begins with the
|
|
* database path).
|
|
*/
|
|
const char *
|
|
_notmuch_database_relative_path (notmuch_database_t *notmuch,
|
|
const char *path)
|
|
{
|
|
const char *db_path, *relative;
|
|
unsigned int db_path_len;
|
|
|
|
db_path = notmuch_database_get_path (notmuch);
|
|
db_path_len = strlen (db_path);
|
|
|
|
relative = path;
|
|
|
|
if (*relative == '/') {
|
|
while (*relative == '/' && *(relative+1) == '/')
|
|
relative++;
|
|
|
|
if (strncmp (relative, db_path, db_path_len) == 0)
|
|
{
|
|
relative += db_path_len;
|
|
while (*relative == '/')
|
|
relative++;
|
|
}
|
|
}
|
|
|
|
return relative;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_get_directory (notmuch_database_t *notmuch,
|
|
const char *path,
|
|
notmuch_directory_t **directory)
|
|
{
|
|
notmuch_status_t status;
|
|
|
|
if (directory == NULL)
|
|
return NOTMUCH_STATUS_NULL_POINTER;
|
|
*directory = NULL;
|
|
|
|
try {
|
|
*directory = _notmuch_directory_create (notmuch, path,
|
|
NOTMUCH_FIND_LOOKUP, &status);
|
|
} catch (const Xapian::Error &error) {
|
|
_notmuch_database_log (notmuch, "A Xapian exception occurred getting directory: %s.\n",
|
|
error.get_msg().c_str());
|
|
notmuch->exception_reported = TRUE;
|
|
status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/* Allocate a document ID that satisfies the following criteria:
|
|
*
|
|
* 1. The ID does not exist for any document in the Xapian database
|
|
*
|
|
* 2. The ID was not previously returned from this function
|
|
*
|
|
* 3. The ID is the smallest integer satisfying (1) and (2)
|
|
*
|
|
* This function will trigger an internal error if these constraints
|
|
* cannot all be satisfied, (that is, the pool of available document
|
|
* IDs has been exhausted).
|
|
*/
|
|
unsigned int
|
|
_notmuch_database_generate_doc_id (notmuch_database_t *notmuch)
|
|
{
|
|
assert (notmuch->last_doc_id >= notmuch->xapian_db->get_lastdocid ());
|
|
|
|
notmuch->last_doc_id++;
|
|
|
|
if (notmuch->last_doc_id == 0)
|
|
INTERNAL_ERROR ("Xapian document IDs are exhausted.\n");
|
|
|
|
return notmuch->last_doc_id;
|
|
}
|
|
|
|
static const char *
|
|
_notmuch_database_generate_thread_id (notmuch_database_t *notmuch)
|
|
{
|
|
/* 16 bytes (+ terminator) for hexadecimal representation of
|
|
* a 64-bit integer. */
|
|
static char thread_id[17];
|
|
Xapian::WritableDatabase *db;
|
|
|
|
db = static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db);
|
|
|
|
notmuch->last_thread_id++;
|
|
|
|
sprintf (thread_id, "%016" PRIx64, notmuch->last_thread_id);
|
|
|
|
db->set_metadata ("last_thread_id", thread_id);
|
|
|
|
return thread_id;
|
|
}
|
|
|
|
static char *
|
|
_get_metadata_thread_id_key (void *ctx, const char *message_id)
|
|
{
|
|
if (strlen (message_id) > NOTMUCH_MESSAGE_ID_MAX)
|
|
message_id = _notmuch_message_id_compressed (ctx, message_id);
|
|
|
|
return talloc_asprintf (ctx, NOTMUCH_METADATA_THREAD_ID_PREFIX "%s",
|
|
message_id);
|
|
}
|
|
|
|
static notmuch_status_t
|
|
_resolve_message_id_to_thread_id_old (notmuch_database_t *notmuch,
|
|
void *ctx,
|
|
const char *message_id,
|
|
const char **thread_id_ret);
|
|
|
|
/* Find the thread ID to which the message with 'message_id' belongs.
|
|
*
|
|
* Note: 'thread_id_ret' must not be NULL!
|
|
* On success '*thread_id_ret' is set to a newly talloced string belonging to
|
|
* 'ctx'.
|
|
*
|
|
* Note: If there is no message in the database with the given
|
|
* 'message_id' then a new thread_id will be allocated for this
|
|
* message ID and stored in the database metadata so that the
|
|
* thread ID can be looked up if the message is added to the database
|
|
* later.
|
|
*/
|
|
static notmuch_status_t
|
|
_resolve_message_id_to_thread_id (notmuch_database_t *notmuch,
|
|
void *ctx,
|
|
const char *message_id,
|
|
const char **thread_id_ret)
|
|
{
|
|
notmuch_private_status_t status;
|
|
notmuch_message_t *message;
|
|
|
|
if (! (notmuch->features & NOTMUCH_FEATURE_GHOSTS))
|
|
return _resolve_message_id_to_thread_id_old (notmuch, ctx, message_id,
|
|
thread_id_ret);
|
|
|
|
/* Look for this message (regular or ghost) */
|
|
message = _notmuch_message_create_for_message_id (
|
|
notmuch, message_id, &status);
|
|
if (status == NOTMUCH_PRIVATE_STATUS_SUCCESS) {
|
|
/* Message exists */
|
|
*thread_id_ret = talloc_steal (
|
|
ctx, notmuch_message_get_thread_id (message));
|
|
} else if (status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND) {
|
|
/* Message did not exist. Give it a fresh thread ID and
|
|
* populate this message as a ghost message. */
|
|
*thread_id_ret = talloc_strdup (
|
|
ctx, _notmuch_database_generate_thread_id (notmuch));
|
|
if (! *thread_id_ret) {
|
|
status = NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY;
|
|
} else {
|
|
status = _notmuch_message_initialize_ghost (message, *thread_id_ret);
|
|
if (status == 0)
|
|
/* Commit the new ghost message */
|
|
_notmuch_message_sync (message);
|
|
}
|
|
} else {
|
|
/* Create failed. Fall through. */
|
|
}
|
|
|
|
notmuch_message_destroy (message);
|
|
|
|
return COERCE_STATUS (status, "Error creating ghost message");
|
|
}
|
|
|
|
/* Pre-ghost messages _resolve_message_id_to_thread_id */
|
|
static notmuch_status_t
|
|
_resolve_message_id_to_thread_id_old (notmuch_database_t *notmuch,
|
|
void *ctx,
|
|
const char *message_id,
|
|
const char **thread_id_ret)
|
|
{
|
|
notmuch_status_t status;
|
|
notmuch_message_t *message;
|
|
string thread_id_string;
|
|
char *metadata_key;
|
|
Xapian::WritableDatabase *db;
|
|
|
|
status = notmuch_database_find_message (notmuch, message_id, &message);
|
|
|
|
if (status)
|
|
return status;
|
|
|
|
if (message) {
|
|
*thread_id_ret = talloc_steal (ctx,
|
|
notmuch_message_get_thread_id (message));
|
|
|
|
notmuch_message_destroy (message);
|
|
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
/* Message has not been seen yet.
|
|
*
|
|
* We may have seen a reference to it already, in which case, we
|
|
* can return the thread ID stored in the metadata. Otherwise, we
|
|
* generate a new thread ID and store it there.
|
|
*/
|
|
db = static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db);
|
|
metadata_key = _get_metadata_thread_id_key (ctx, message_id);
|
|
thread_id_string = notmuch->xapian_db->get_metadata (metadata_key);
|
|
|
|
if (thread_id_string.empty()) {
|
|
*thread_id_ret = talloc_strdup (ctx,
|
|
_notmuch_database_generate_thread_id (notmuch));
|
|
db->set_metadata (metadata_key, *thread_id_ret);
|
|
} else {
|
|
*thread_id_ret = talloc_strdup (ctx, thread_id_string.c_str());
|
|
}
|
|
|
|
talloc_free (metadata_key);
|
|
|
|
return NOTMUCH_STATUS_SUCCESS;
|
|
}
|
|
|
|
static notmuch_status_t
|
|
_merge_threads (notmuch_database_t *notmuch,
|
|
const char *winner_thread_id,
|
|
const char *loser_thread_id)
|
|
{
|
|
Xapian::PostingIterator loser, loser_end;
|
|
notmuch_message_t *message = NULL;
|
|
notmuch_private_status_t private_status;
|
|
notmuch_status_t ret = NOTMUCH_STATUS_SUCCESS;
|
|
|
|
find_doc_ids (notmuch, "thread", loser_thread_id, &loser, &loser_end);
|
|
|
|
for ( ; loser != loser_end; loser++) {
|
|
message = _notmuch_message_create (notmuch, notmuch,
|
|
*loser, &private_status);
|
|
if (message == NULL) {
|
|
ret = COERCE_STATUS (private_status,
|
|
"Cannot find document for doc_id from query");
|
|
goto DONE;
|
|
}
|
|
|
|
_notmuch_message_remove_term (message, "thread", loser_thread_id);
|
|
_notmuch_message_add_term (message, "thread", winner_thread_id);
|
|
_notmuch_message_sync (message);
|
|
|
|
notmuch_message_destroy (message);
|
|
message = NULL;
|
|
}
|
|
|
|
DONE:
|
|
if (message)
|
|
notmuch_message_destroy (message);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
_my_talloc_free_for_g_hash (void *ptr)
|
|
{
|
|
talloc_free (ptr);
|
|
}
|
|
|
|
static notmuch_status_t
|
|
_notmuch_database_link_message_to_parents (notmuch_database_t *notmuch,
|
|
notmuch_message_t *message,
|
|
notmuch_message_file_t *message_file,
|
|
const char **thread_id)
|
|
{
|
|
GHashTable *parents = NULL;
|
|
const char *refs, *in_reply_to, *in_reply_to_message_id;
|
|
const char *last_ref_message_id, *this_message_id;
|
|
GList *l, *keys = NULL;
|
|
notmuch_status_t ret = NOTMUCH_STATUS_SUCCESS;
|
|
|
|
parents = g_hash_table_new_full (g_str_hash, g_str_equal,
|
|
_my_talloc_free_for_g_hash, NULL);
|
|
this_message_id = notmuch_message_get_message_id (message);
|
|
|
|
refs = _notmuch_message_file_get_header (message_file, "references");
|
|
last_ref_message_id = parse_references (message,
|
|
this_message_id,
|
|
parents, refs);
|
|
|
|
in_reply_to = _notmuch_message_file_get_header (message_file, "in-reply-to");
|
|
in_reply_to_message_id = parse_references (message,
|
|
this_message_id,
|
|
parents, in_reply_to);
|
|
|
|
/* For the parent of this message, use the last message ID of the
|
|
* References header, if available. If not, fall back to the
|
|
* first message ID in the In-Reply-To header. */
|
|
if (last_ref_message_id) {
|
|
_notmuch_message_add_term (message, "replyto",
|
|
last_ref_message_id);
|
|
} else if (in_reply_to_message_id) {
|
|
_notmuch_message_add_term (message, "replyto",
|
|
in_reply_to_message_id);
|
|
}
|
|
|
|
keys = g_hash_table_get_keys (parents);
|
|
for (l = keys; l; l = l->next) {
|
|
char *parent_message_id;
|
|
const char *parent_thread_id = NULL;
|
|
|
|
parent_message_id = (char *) l->data;
|
|
|
|
_notmuch_message_add_term (message, "reference",
|
|
parent_message_id);
|
|
|
|
ret = _resolve_message_id_to_thread_id (notmuch,
|
|
message,
|
|
parent_message_id,
|
|
&parent_thread_id);
|
|
if (ret)
|
|
goto DONE;
|
|
|
|
if (*thread_id == NULL) {
|
|
*thread_id = talloc_strdup (message, parent_thread_id);
|
|
_notmuch_message_add_term (message, "thread", *thread_id);
|
|
} else if (strcmp (*thread_id, parent_thread_id)) {
|
|
ret = _merge_threads (notmuch, *thread_id, parent_thread_id);
|
|
if (ret)
|
|
goto DONE;
|
|
}
|
|
}
|
|
|
|
DONE:
|
|
if (keys)
|
|
g_list_free (keys);
|
|
if (parents)
|
|
g_hash_table_unref (parents);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static notmuch_status_t
|
|
_notmuch_database_link_message_to_children (notmuch_database_t *notmuch,
|
|
notmuch_message_t *message,
|
|
const char **thread_id)
|
|
{
|
|
const char *message_id = notmuch_message_get_message_id (message);
|
|
Xapian::PostingIterator child, children_end;
|
|
notmuch_message_t *child_message = NULL;
|
|
const char *child_thread_id;
|
|
notmuch_status_t ret = NOTMUCH_STATUS_SUCCESS;
|
|
notmuch_private_status_t private_status;
|
|
|
|
find_doc_ids (notmuch, "reference", message_id, &child, &children_end);
|
|
|
|
for ( ; child != children_end; child++) {
|
|
|
|
child_message = _notmuch_message_create (message, notmuch,
|
|
*child, &private_status);
|
|
if (child_message == NULL) {
|
|
ret = COERCE_STATUS (private_status,
|
|
"Cannot find document for doc_id from query");
|
|
goto DONE;
|
|
}
|
|
|
|
child_thread_id = notmuch_message_get_thread_id (child_message);
|
|
if (*thread_id == NULL) {
|
|
*thread_id = talloc_strdup (message, child_thread_id);
|
|
_notmuch_message_add_term (message, "thread", *thread_id);
|
|
} else if (strcmp (*thread_id, child_thread_id)) {
|
|
_notmuch_message_remove_term (child_message, "reference",
|
|
message_id);
|
|
_notmuch_message_sync (child_message);
|
|
ret = _merge_threads (notmuch, *thread_id, child_thread_id);
|
|
if (ret)
|
|
goto DONE;
|
|
}
|
|
|
|
notmuch_message_destroy (child_message);
|
|
child_message = NULL;
|
|
}
|
|
|
|
DONE:
|
|
if (child_message)
|
|
notmuch_message_destroy (child_message);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Fetch and clear the stored thread_id for message, or NULL if none. */
|
|
static char *
|
|
_consume_metadata_thread_id (void *ctx, notmuch_database_t *notmuch,
|
|
notmuch_message_t *message)
|
|
{
|
|
const char *message_id;
|
|
string stored_id;
|
|
char *metadata_key;
|
|
|
|
message_id = notmuch_message_get_message_id (message);
|
|
metadata_key = _get_metadata_thread_id_key (ctx, message_id);
|
|
|
|
/* Check if we have already seen related messages to this one.
|
|
* If we have then use the thread_id that we stored at that time.
|
|
*/
|
|
stored_id = notmuch->xapian_db->get_metadata (metadata_key);
|
|
if (stored_id.empty ()) {
|
|
return NULL;
|
|
} else {
|
|
Xapian::WritableDatabase *db;
|
|
|
|
db = static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db);
|
|
|
|
/* Clear the metadata for this message ID. We don't need it
|
|
* anymore. */
|
|
db->set_metadata (metadata_key, "");
|
|
|
|
return talloc_strdup (ctx, stored_id.c_str ());
|
|
}
|
|
}
|
|
|
|
/* Given a blank or ghost 'message' and its corresponding
|
|
* 'message_file' link it to existing threads in the database.
|
|
*
|
|
* First, if is_ghost, this retrieves the thread ID already stored in
|
|
* the message (which will be the case if a message was previously
|
|
* added that referenced this one). If the message is blank
|
|
* (!is_ghost), it doesn't have a thread ID yet (we'll generate one
|
|
* later in this function). If the database does not support ghost
|
|
* messages, this checks for a thread ID stored in database metadata
|
|
* for this message ID.
|
|
*
|
|
* Second, we look at 'message_file' and its link-relevant headers
|
|
* (References and In-Reply-To) for message IDs.
|
|
*
|
|
* Finally, we look in the database for existing message that
|
|
* reference 'message'.
|
|
*
|
|
* In all cases, we assign to the current message the first thread ID
|
|
* found. We will also merge any existing, distinct threads where this
|
|
* message belongs to both, (which is not uncommon when messages are
|
|
* processed out of order).
|
|
*
|
|
* Finally, if no thread ID has been found through referenced messages, we
|
|
* call _notmuch_message_generate_thread_id to generate a new thread
|
|
* ID. This should only happen for new, top-level messages, (no
|
|
* References or In-Reply-To header in this message, and no previously
|
|
* added message refers to this message).
|
|
*/
|
|
static notmuch_status_t
|
|
_notmuch_database_link_message (notmuch_database_t *notmuch,
|
|
notmuch_message_t *message,
|
|
notmuch_message_file_t *message_file,
|
|
notmuch_bool_t is_ghost)
|
|
{
|
|
void *local = talloc_new (NULL);
|
|
notmuch_status_t status;
|
|
const char *thread_id = NULL;
|
|
|
|
/* Check if the message already had a thread ID */
|
|
if (notmuch->features & NOTMUCH_FEATURE_GHOSTS) {
|
|
if (is_ghost)
|
|
thread_id = notmuch_message_get_thread_id (message);
|
|
} else {
|
|
thread_id = _consume_metadata_thread_id (local, notmuch, message);
|
|
if (thread_id)
|
|
_notmuch_message_add_term (message, "thread", thread_id);
|
|
}
|
|
|
|
status = _notmuch_database_link_message_to_parents (notmuch, message,
|
|
message_file,
|
|
&thread_id);
|
|
if (status)
|
|
goto DONE;
|
|
|
|
if (! (notmuch->features & NOTMUCH_FEATURE_GHOSTS)) {
|
|
/* In general, it shouldn't be necessary to link children,
|
|
* since the earlier indexing of those children will have
|
|
* stored a thread ID for the missing parent. However, prior
|
|
* to ghost messages, these stored thread IDs were NOT
|
|
* rewritten during thread merging (and there was no
|
|
* performant way to do so), so if indexed children were
|
|
* pulled into a different thread ID by a merge, it was
|
|
* necessary to pull them *back* into the stored thread ID of
|
|
* the parent. With ghost messages, we just rewrite the
|
|
* stored thread IDs during merging, so this workaround isn't
|
|
* necessary. */
|
|
status = _notmuch_database_link_message_to_children (notmuch, message,
|
|
&thread_id);
|
|
if (status)
|
|
goto DONE;
|
|
}
|
|
|
|
/* If not part of any existing thread, generate a new thread ID. */
|
|
if (thread_id == NULL) {
|
|
thread_id = _notmuch_database_generate_thread_id (notmuch);
|
|
|
|
_notmuch_message_add_term (message, "thread", thread_id);
|
|
}
|
|
|
|
DONE:
|
|
talloc_free (local);
|
|
|
|
return status;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_add_message (notmuch_database_t *notmuch,
|
|
const char *filename,
|
|
notmuch_message_t **message_ret)
|
|
{
|
|
notmuch_message_file_t *message_file;
|
|
notmuch_message_t *message = NULL;
|
|
notmuch_status_t ret = NOTMUCH_STATUS_SUCCESS, ret2;
|
|
notmuch_private_status_t private_status;
|
|
notmuch_bool_t is_ghost = false;
|
|
|
|
const char *date, *header;
|
|
const char *from, *to, *subject;
|
|
char *message_id = NULL;
|
|
|
|
if (message_ret)
|
|
*message_ret = NULL;
|
|
|
|
ret = _notmuch_database_ensure_writable (notmuch);
|
|
if (ret)
|
|
return ret;
|
|
|
|
message_file = _notmuch_message_file_open (notmuch, filename);
|
|
if (message_file == NULL)
|
|
return NOTMUCH_STATUS_FILE_ERROR;
|
|
|
|
/* Adding a message may change many documents. Do this all
|
|
* atomically. */
|
|
ret = notmuch_database_begin_atomic (notmuch);
|
|
if (ret)
|
|
goto DONE;
|
|
|
|
/* Parse message up front to get better error status. */
|
|
ret = _notmuch_message_file_parse (message_file);
|
|
if (ret)
|
|
goto DONE;
|
|
|
|
try {
|
|
/* Before we do any real work, (especially before doing a
|
|
* potential SHA-1 computation on the entire file's contents),
|
|
* let's make sure that what we're looking at looks like an
|
|
* actual email message.
|
|
*/
|
|
from = _notmuch_message_file_get_header (message_file, "from");
|
|
subject = _notmuch_message_file_get_header (message_file, "subject");
|
|
to = _notmuch_message_file_get_header (message_file, "to");
|
|
|
|
if ((from == NULL || *from == '\0') &&
|
|
(subject == NULL || *subject == '\0') &&
|
|
(to == NULL || *to == '\0'))
|
|
{
|
|
ret = NOTMUCH_STATUS_FILE_NOT_EMAIL;
|
|
goto DONE;
|
|
}
|
|
|
|
/* Now that we're sure it's mail, the first order of business
|
|
* is to find a message ID (or else create one ourselves). */
|
|
|
|
header = _notmuch_message_file_get_header (message_file, "message-id");
|
|
if (header && *header != '\0') {
|
|
message_id = _parse_message_id (message_file, header, NULL);
|
|
|
|
/* So the header value isn't RFC-compliant, but it's
|
|
* better than no message-id at all. */
|
|
if (message_id == NULL)
|
|
message_id = talloc_strdup (message_file, header);
|
|
}
|
|
|
|
if (message_id == NULL ) {
|
|
/* No message-id at all, let's generate one by taking a
|
|
* hash over the file's contents. */
|
|
char *sha1 = _notmuch_sha1_of_file (filename);
|
|
|
|
/* If that failed too, something is really wrong. Give up. */
|
|
if (sha1 == NULL) {
|
|
ret = NOTMUCH_STATUS_FILE_ERROR;
|
|
goto DONE;
|
|
}
|
|
|
|
message_id = talloc_asprintf (message_file,
|
|
"notmuch-sha1-%s", sha1);
|
|
free (sha1);
|
|
}
|
|
|
|
/* Now that we have a message ID, we get a message object,
|
|
* (which may or may not reference an existing document in the
|
|
* database). */
|
|
|
|
message = _notmuch_message_create_for_message_id (notmuch,
|
|
message_id,
|
|
&private_status);
|
|
|
|
talloc_free (message_id);
|
|
|
|
if (message == NULL) {
|
|
ret = COERCE_STATUS (private_status,
|
|
"Unexpected status value from _notmuch_message_create_for_message_id");
|
|
goto DONE;
|
|
}
|
|
|
|
_notmuch_message_add_filename (message, filename);
|
|
|
|
/* Is this a newly created message object or a ghost
|
|
* message? We have to be slightly careful: if this is a
|
|
* blank message, it's not safe to call
|
|
* notmuch_message_get_flag yet. */
|
|
if (private_status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND ||
|
|
(is_ghost = notmuch_message_get_flag (
|
|
message, NOTMUCH_MESSAGE_FLAG_GHOST))) {
|
|
_notmuch_message_add_term (message, "type", "mail");
|
|
if (is_ghost)
|
|
/* Convert ghost message to a regular message */
|
|
_notmuch_message_remove_term (message, "type", "ghost");
|
|
|
|
ret = _notmuch_database_link_message (notmuch, message,
|
|
message_file, is_ghost);
|
|
if (ret)
|
|
goto DONE;
|
|
|
|
date = _notmuch_message_file_get_header (message_file, "date");
|
|
_notmuch_message_set_header_values (message, date, from, subject);
|
|
|
|
ret = _notmuch_message_index_file (message, message_file);
|
|
if (ret)
|
|
goto DONE;
|
|
} else {
|
|
ret = NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID;
|
|
}
|
|
|
|
_notmuch_message_sync (message);
|
|
} catch (const Xapian::Error &error) {
|
|
_notmuch_database_log (notmuch, "A Xapian exception occurred adding message: %s.\n",
|
|
error.get_msg().c_str());
|
|
notmuch->exception_reported = TRUE;
|
|
ret = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
|
|
goto DONE;
|
|
}
|
|
|
|
DONE:
|
|
if (message) {
|
|
if ((ret == NOTMUCH_STATUS_SUCCESS ||
|
|
ret == NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID) && message_ret)
|
|
*message_ret = message;
|
|
else
|
|
notmuch_message_destroy (message);
|
|
}
|
|
|
|
if (message_file)
|
|
_notmuch_message_file_close (message_file);
|
|
|
|
ret2 = notmuch_database_end_atomic (notmuch);
|
|
if ((ret == NOTMUCH_STATUS_SUCCESS ||
|
|
ret == NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID) &&
|
|
ret2 != NOTMUCH_STATUS_SUCCESS)
|
|
ret = ret2;
|
|
|
|
return ret;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_remove_message (notmuch_database_t *notmuch,
|
|
const char *filename)
|
|
{
|
|
notmuch_status_t status;
|
|
notmuch_message_t *message;
|
|
|
|
status = notmuch_database_find_message_by_filename (notmuch, filename,
|
|
&message);
|
|
|
|
if (status == NOTMUCH_STATUS_SUCCESS && message) {
|
|
status = _notmuch_message_remove_filename (message, filename);
|
|
if (status == NOTMUCH_STATUS_SUCCESS)
|
|
_notmuch_message_delete (message);
|
|
else if (status == NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID)
|
|
_notmuch_message_sync (message);
|
|
|
|
notmuch_message_destroy (message);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
notmuch_status_t
|
|
notmuch_database_find_message_by_filename (notmuch_database_t *notmuch,
|
|
const char *filename,
|
|
notmuch_message_t **message_ret)
|
|
{
|
|
void *local;
|
|
const char *prefix = _find_prefix ("file-direntry");
|
|
char *direntry, *term;
|
|
Xapian::PostingIterator i, end;
|
|
notmuch_status_t status;
|
|
|
|
if (message_ret == NULL)
|
|
return NOTMUCH_STATUS_NULL_POINTER;
|
|
|
|
if (! (notmuch->features & NOTMUCH_FEATURE_FILE_TERMS))
|
|
return NOTMUCH_STATUS_UPGRADE_REQUIRED;
|
|
|
|
/* return NULL on any failure */
|
|
*message_ret = NULL;
|
|
|
|
local = talloc_new (notmuch);
|
|
|
|
try {
|
|
status = _notmuch_database_filename_to_direntry (
|
|
local, notmuch, filename, NOTMUCH_FIND_LOOKUP, &direntry);
|
|
if (status || !direntry)
|
|
goto DONE;
|
|
|
|
term = talloc_asprintf (local, "%s%s", prefix, direntry);
|
|
|
|
find_doc_ids_for_term (notmuch, term, &i, &end);
|
|
|
|
if (i != end) {
|
|
notmuch_private_status_t private_status;
|
|
|
|
*message_ret = _notmuch_message_create (notmuch, notmuch, *i,
|
|
&private_status);
|
|
if (*message_ret == NULL)
|
|
status = NOTMUCH_STATUS_OUT_OF_MEMORY;
|
|
}
|
|
} catch (const Xapian::Error &error) {
|
|
_notmuch_database_log (notmuch, "Error: A Xapian exception occurred finding message by filename: %s\n",
|
|
error.get_msg().c_str());
|
|
notmuch->exception_reported = TRUE;
|
|
status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
|
|
}
|
|
|
|
DONE:
|
|
talloc_free (local);
|
|
|
|
if (status && *message_ret) {
|
|
notmuch_message_destroy (*message_ret);
|
|
*message_ret = NULL;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
notmuch_string_list_t *
|
|
_notmuch_database_get_terms_with_prefix (void *ctx, Xapian::TermIterator &i,
|
|
Xapian::TermIterator &end,
|
|
const char *prefix)
|
|
{
|
|
int prefix_len = strlen (prefix);
|
|
notmuch_string_list_t *list;
|
|
|
|
list = _notmuch_string_list_create (ctx);
|
|
if (unlikely (list == NULL))
|
|
return NULL;
|
|
|
|
for (i.skip_to (prefix); i != end; i++) {
|
|
/* Terminate loop at first term without desired prefix. */
|
|
if (strncmp ((*i).c_str (), prefix, prefix_len))
|
|
break;
|
|
|
|
_notmuch_string_list_append (list, (*i).c_str () + prefix_len);
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
notmuch_tags_t *
|
|
notmuch_database_get_all_tags (notmuch_database_t *db)
|
|
{
|
|
Xapian::TermIterator i, end;
|
|
notmuch_string_list_t *tags;
|
|
|
|
try {
|
|
i = db->xapian_db->allterms_begin();
|
|
end = db->xapian_db->allterms_end();
|
|
tags = _notmuch_database_get_terms_with_prefix (db, i, end,
|
|
_find_prefix ("tag"));
|
|
_notmuch_string_list_sort (tags);
|
|
return _notmuch_tags_create (db, tags);
|
|
} catch (const Xapian::Error &error) {
|
|
_notmuch_database_log (db, "A Xapian exception occurred getting tags: %s.\n",
|
|
error.get_msg().c_str());
|
|
db->exception_reported = TRUE;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
const char *
|
|
notmuch_database_status_string (const notmuch_database_t *notmuch)
|
|
{
|
|
return notmuch->status_string;
|
|
}
|