+++ /dev/null
-/*
- * Copyright © 2009 Carl Worth
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see http://www.gnu.org/licenses/ .
- *
- * Author: Carl Worth <cworth@cworth.org>
- */
-
-/* This indexer creates a Xapian mail index that is remarkably similar
- * to that created by sup. The big difference, (and the thing that
- * will keep a notmuch index from being used by sup directly), is that
- * sup expects a serialized ruby data structure in the document's data
- * field, but notmuch just puts the mail's filename there (trusting
- * that the email client can get the data in needs from the filename).
- *
- * Note: One bug here is that sup actually merges together fields such
- * as To, CC, Bcc etc. when finding multiple emails with the same
- * message ID. To support something similar, notmuch should list
- * multiple files in the data field.
- *
- * Other differences between sup and notmuch-index identified so far:
- *
- * o sup supports encrypted mime parts by prompting for a passphrase
- * to decrypt the message. So far, notmuch doesn't support this,
- * both because I'm lazy to code it, and I also think doing so
- * would present a security leak.
- *
- * o sup and notmuch have different heuristics for identifying (and
- * thus ignoring) signatures. For example, sup considers a line
- * consisting of two hypens as a signature separator, while
- * notmuch expects those two hyphens to be followed by a space
- * character.
- *
- * o sup as been seen to split some numbers before indexing
- * them. For example, the number 1754 in an email message was
- * indexed by sup as separate terms 17 and 54. I couldn't find any
- * explanation for this behavior and did not try to replicate it
- * in notmuch.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <time.h>
-#include <sys/time.h>
-
-#include <iostream>
-
-#include <gmime/gmime.h>
-
-#include <xapian.h>
-
-using namespace std;
-
-#define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr[0]))
-
-/* Xapian complains if we provide a term longer than this. */
-#define NOTMUCH_MAX_TERM 245
-
-/* These prefix values are specifically chosen to be compatible
- * with sup, (http://sup.rubyforge.org), written by
- * William Morgan <wmorgan-sup@masanjin.net>, and released
- * under the GNU GPL v2.
- */
-
-typedef struct {
- const char *name;
- const char *prefix;
-} prefix_t;
-
-prefix_t NORMAL_PREFIX[] = {
- { "subject", "S" },
- { "body", "B" },
- { "from_name", "FN" },
- { "to_name", "TN" },
- { "name", "N" },
- { "attachment", "A" }
-};
-
-prefix_t BOOLEAN_PREFIX[] = {
- { "type", "K" },
- { "from_email", "FE" },
- { "to_email", "TE" },
- { "email", "E" },
- { "date", "D" },
- { "label", "L" },
- { "source_id", "I" },
- { "attachment_extension", "O" },
- { "msgid", "Q" },
- { "thread", "H" },
- { "ref", "R" }
-};
-
-/* Similarly, these value numbers are also chosen to be sup
- * compatible. */
-
-typedef enum {
- NOTMUCH_VALUE_MESSAGE_ID = 0,
- NOTMUCH_VALUE_THREAD = 1,
- NOTMUCH_VALUE_DATE = 2
-} notmuch_value_t;
-
-static const char *
-find_prefix (const char *name)
-{
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE (NORMAL_PREFIX); i++)
- if (strcmp (name, NORMAL_PREFIX[i].name) == 0)
- return NORMAL_PREFIX[i].prefix;
-
- for (i = 0; i < ARRAY_SIZE (BOOLEAN_PREFIX); i++)
- if (strcmp (name, BOOLEAN_PREFIX[i].name) == 0)
- return BOOLEAN_PREFIX[i].prefix;
-
- return "";
-}
-
-/* "128 bits of thread-id ought to be enough for anybody" */
-#define NOTMUCH_THREAD_ID_BITS 128
-#define NOTMUCH_THREAD_ID_DIGITS (NOTMUCH_THREAD_ID_BITS / 4)
-typedef struct _thread_id {
- char str[NOTMUCH_THREAD_ID_DIGITS + 1];
-} thread_id_t;
-
-static void
-thread_id_generate (thread_id_t *thread_id)
-{
- FILE *urandom;
- uint32_t value;
- char *s;
- int i;
-
- urandom = fopen ("/dev/urandom", "r");
- if (urandom == NULL) {
- fprintf (stderr, "Error opening /dev/urandom: %s\n",
- strerror (errno));
- fprintf (stderr, "Perhaps notmuch needs some portability fixes for your platform?\n");
- exit (1);
- }
-
- s = thread_id->str;
- for (i = 0; i < NOTMUCH_THREAD_ID_DIGITS; i += 8) {
- fread ((void *) &value, sizeof (value), 1, urandom);
- sprintf (s, "%08x", value);
- s += 8;
- }
-
- fclose (urandom);
-
- printf ("Generated thread id: %s\n", thread_id->str);
-}
-
-static void
-add_term (Xapian::Document doc,
- const char *prefix_name,
- const char *value)
-{
- const char *prefix;
- char *term;
-
- if (value == NULL)
- return;
-
- prefix = find_prefix (prefix_name);
-
- term = g_strdup_printf ("%s%s", prefix, value);
-
- if (strlen (term) <= NOTMUCH_MAX_TERM)
- doc.add_term (term);
-
- g_free (term);
-}
-
-static void
-gen_terms (Xapian::TermGenerator term_gen,
- const char *prefix_name,
- const char *text)
-{
- const char *prefix;
-
- if (text == NULL)
- return;
-
- prefix = find_prefix (prefix_name);
-
- term_gen.index_text (text, 1, prefix);
-}
-
-static void
-gen_terms_address_name (Xapian::TermGenerator term_gen,
- InternetAddress *address,
- const char *prefix_name)
-{
- if (INTERNET_ADDRESS_IS_MAILBOX(address)) {
- const char *name;
- int own_name = 0;
-
- name = internet_address_get_name (address);
-
- /* In the absence of a name, we'll strip the part before the @
- * from the address. */
- if (! name) {
- InternetAddressMailbox *mailbox = INTERNET_ADDRESS_MAILBOX (address);
- const char *addr = internet_address_mailbox_get_addr (mailbox);
- const char *at;
-
- at = strchr (addr, '@');
- if (at) {
- name = strndup (addr, at - addr);
- own_name = 1;
- }
- }
-
- if (name)
- gen_terms (term_gen, prefix_name, name);
-
- if (own_name)
- free ((void *) name);
- } else if (INTERNET_ADDRESS_IS_GROUP (address)) {
- InternetAddressGroup *group = INTERNET_ADDRESS_GROUP (address);
- InternetAddressList *list = internet_address_group_get_members(group);
- if (list) {
- int length = internet_address_list_length(list);
- int i;
-
- for (i = 0; i < length; i++)
- gen_terms_address_name(term_gen,
- internet_address_list_get_address(list, i),
- prefix_name);
- }
- }
-}
-
-static void
-gen_terms_address_names (Xapian::TermGenerator term_gen,
- InternetAddressList *addresses,
- const char *address_type)
-{
- int i;
- InternetAddress *address;
-
- if (addresses == NULL)
- return;
-
- for (i = 0; i < internet_address_list_length (addresses); i++) {
- address = internet_address_list_get_address (addresses, i);
- gen_terms_address_name (term_gen, address, address_type);
- gen_terms_address_name (term_gen, address, "name");
- gen_terms_address_name (term_gen, address, "body");
- }
-}
-
-static void
-add_term_address_addr (Xapian::Document doc,
- InternetAddress *address,
- const char *prefix_name)
-{
- if (INTERNET_ADDRESS_IS_MAILBOX(address)) {
- InternetAddressMailbox *mailbox = INTERNET_ADDRESS_MAILBOX (address);
- const char *addr;
-
- addr = internet_address_mailbox_get_addr (mailbox);
-
- if (addr)
- add_term (doc, prefix_name, addr);
- } else if (INTERNET_ADDRESS_IS_GROUP (address)) {
- InternetAddressGroup *group = INTERNET_ADDRESS_GROUP (address);
- InternetAddressList *list = internet_address_group_get_members(group);
- if (list) {
- int length = internet_address_list_length(list);
- int i;
-
- for (i = 0; i < length; i++)
- add_term_address_addr(doc,
- internet_address_list_get_address(list, i),
- prefix_name);
- }
- }
-}
-
-static void
-add_terms_address_addrs (Xapian::Document doc,
- InternetAddressList *addresses,
- const char *address_type)
-{
- int i;
- InternetAddress *address;
-
- if (addresses == NULL)
- return;
-
- for (i = 0; i < internet_address_list_length (addresses); i++) {
- address = internet_address_list_get_address (addresses, i);
- add_term_address_addr (doc, address, address_type);
- add_term_address_addr (doc, address, "email");
- }
-}
-
-static const char *
-skip_re_in_subject (const char *subject)
-{
- const char *s = subject;
-
- if (subject == NULL)
- return NULL;
-
- while (*s) {
- while (*s && isspace (*s))
- s++;
- if (strncasecmp (s, "re:", 3) == 0)
- s += 3;
- else
- break;
- }
-
- return s;
-}
-
-static void
-find_messages_by_term (Xapian::Database db,
- const char *prefix_name,
- const char *value,
- Xapian::PostingIterator *begin,
- Xapian::PostingIterator *end)
-{
- Xapian::PostingIterator i;
- char *term;
-
- term = g_strdup_printf ("%s%s", find_prefix (prefix_name), value);
-
- *begin = db.postlist_begin (term);
-
- if (end)
- *end = db.postlist_end (term);
-
- free (term);
-}
-
-Xapian::Document
-find_message_by_docid (Xapian::Database db, Xapian::docid docid)
-{
- return db.get_document (docid);
-}
-
-Xapian::Document
-find_message_by_message_id (Xapian::Database db, const char *message_id)
-{
- Xapian::PostingIterator i, end;
-
- find_messages_by_term (db, "msgid", message_id, &i, &end);
-
- if (i != end)
- return find_message_by_docid (db, *i);
- else
- return Xapian::Document ();
-}
-
-static void
-insert_thread_id (GHashTable *thread_ids, Xapian::Document doc)
-{
- string value_string;
- const char *value, *id, *comma;
-
- value_string = doc.get_value (NOTMUCH_VALUE_THREAD);
- value = value_string.c_str();
- if (strlen (value)) {
- id = value;
- while (*id) {
- comma = strchr (id, ',');
- if (comma == NULL)
- comma = id + strlen (id);
- g_hash_table_insert (thread_ids,
- strndup (id, comma - id), NULL);
- id = comma;
- if (*id)
- id++;
- }
- }
-}
-
-/* Return one or more thread_ids, (as a GPtrArray of strings), for the
- * given message based on looking into the database for any messages
- * referenced in parents, and also for any messages in the database
- * referencing message_id.
- *
- * Caller should free all strings in the array and the array itself,
- * (g_ptr_array_free) when done. */
-static GPtrArray *
-find_thread_ids (Xapian::Database db,
- GPtrArray *parents,
- const char *message_id)
-{
- Xapian::PostingIterator child, children_end;
- Xapian::Document doc;
- GHashTable *thread_ids;
- GList *keys, *l;
- unsigned int i;
- const char *parent_message_id;
- GPtrArray *result;
-
- thread_ids = g_hash_table_new_full (g_str_hash, g_str_equal,
- free, NULL);
-
- find_messages_by_term (db, "ref", message_id, &child, &children_end);
- for ( ; child != children_end; child++) {
- doc = find_message_by_docid (db, *child);
- insert_thread_id (thread_ids, doc);
- }
-
- for (i = 0; i < parents->len; i++) {
- parent_message_id = (char *) g_ptr_array_index (parents, i);
- doc = find_message_by_message_id (db, parent_message_id);
- insert_thread_id (thread_ids, doc);
- }
-
- result = g_ptr_array_new ();
-
- keys = g_hash_table_get_keys (thread_ids);
- for (l = keys; l; l = l->next) {
- char *id = (char *) l->data;
- g_ptr_array_add (result, id);
- }
- g_list_free (keys);
-
- /* We're done with the hash table, but we've taken the pointers to
- * the allocated strings and put them into our result array, so
- * tell the hash not to free them on its way out. */
- g_hash_table_steal_all (thread_ids);
- g_hash_table_unref (thread_ids);
-
- return result;
-}
-
-/* Add a term for each message-id in the References header of the
- * message. */
-static void
-parse_references (GPtrArray *array,
- const char *refs_str)
-{
- GMimeReferences *refs, *r;
- const char *message_id;
-
- if (refs_str == NULL)
- return;
-
- refs = g_mime_references_decode (refs_str);
-
- for (r = refs; r; r = r->next) {
- message_id = g_mime_references_get_message_id (r);
- g_ptr_array_add (array, g_strdup (message_id));
- }
-
- g_mime_references_free (refs);
-}
-
-/* Given a string representing the body of a message, generate terms
- * for it, (skipping quoted portions and signatures). */
-static void
-gen_terms_body_str (Xapian::TermGenerator term_gen,
- char *body)
-{
- char *line, *line_end, *next_line;
-
- if (body == NULL)
- return;
-
- next_line = body;
-
- while (1) {
- line = next_line;
- if (*line == '\0')
- break;
-
- next_line = strchr (line, '\n');
- if (next_line == NULL) {
- next_line = line + strlen (line);
- }
- line_end = next_line - 1;
-
- /* Get to the next non-blank line. */
- while (*next_line == '\n')
- next_line++;
-
- /* Skip blank lines. */
- if (line_end < line)
- continue;
-
- /* Skip lines that are quotes. */
- if (*line == '>')
- continue;
-
- /* Also skip lines introducing a quote on the next line. */
- if (*line_end == ':' && *next_line == '>')
- continue;
-
- /* Finally, bail as soon as we see a signature. */
- /* XXX: Should only do this if "near" the end of the message. */
- if (strncmp (line, "-- ", 3) == 0 ||
- strncmp (line, "----------", 10) == 0 ||
- strncmp (line, "__________", 10) == 0)
- break;
-
- *(line_end + 1) = '\0';
- gen_terms (term_gen, "body", line);
- }
-}
-
-
-/* Callback to generate terms for each mime part of a message. */
-static void
-gen_terms_part (Xapian::TermGenerator term_gen,
- GMimeObject *part)
-{
- GMimeStream *stream;
- GMimeDataWrapper *wrapper;
- GByteArray *byte_array;
- GMimeContentDisposition *disposition;
- char *body;
-
- if (GMIME_IS_MULTIPART (part)) {
- GMimeMultipart *multipart = GMIME_MULTIPART (part);
- int i;
-
- for (i = 0; i < g_mime_multipart_get_count (multipart); i++) {
- if (GMIME_IS_MULTIPART_SIGNED (multipart)) {
- /* Don't index the signature. */
- if (i == 1)
- continue;
- if (i > 1)
- fprintf (stderr, "Warning: Unexpected extra parts of mutlipart/signed. Indexing anyway.\n");
- }
- gen_terms_part (term_gen,
- g_mime_multipart_get_part (multipart, i));
- }
- return;
- }
-
- if (GMIME_IS_MESSAGE_PART (part)) {
- GMimeMessage *message;
-
- message = g_mime_message_part_get_message (GMIME_MESSAGE_PART (part));
-
- gen_terms_part (term_gen, g_mime_message_get_mime_part (message));
-
- return;
- }
-
- if (! (GMIME_IS_PART (part))) {
- fprintf (stderr, "Warning: Not indexing unknown mime part: %s.\n",
- g_type_name (G_OBJECT_TYPE (part)));
- return;
- }
-
- disposition = g_mime_object_get_content_disposition (part);
- if (disposition &&
- strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
- {
- const char *filename = g_mime_part_get_filename (GMIME_PART (part));
- const char *extension;
-
- add_term (term_gen.get_document (), "label", "attachment");
- gen_terms (term_gen, "attachment", filename);
-
- if (filename) {
- extension = strchr (filename, '.');
- if (extension) {
- add_term (term_gen.get_document (), "attachment_extension",
- extension + 1);
- }
- }
-
- return;
- }
-
- byte_array = g_byte_array_new ();
-
- stream = g_mime_stream_mem_new_with_byte_array (byte_array);
- g_mime_stream_mem_set_owner (GMIME_STREAM_MEM (stream), FALSE);
- wrapper = g_mime_part_get_content_object (GMIME_PART (part));
- if (wrapper)
- g_mime_data_wrapper_write_to_stream (wrapper, stream);
-
- g_object_unref (stream);
-
- g_byte_array_append (byte_array, (guint8 *) "\0", 1);
- body = (char *) g_byte_array_free (byte_array, FALSE);
-
- gen_terms_body_str (term_gen, body);
-
- free (body);
-}
-
-static void
-index_file (Xapian::WritableDatabase db,
- Xapian::TermGenerator term_gen,
- const char *filename)
-{
- Xapian::Document doc;
-
- GMimeStream *stream;
- GMimeParser *parser;
- GMimeMessage *message;
- InternetAddressList *addresses;
- GPtrArray *parents, *thread_ids;
-
- FILE *file;
-
- const char *subject, *refs, *in_reply_to, *from;
- const char *message_id;
-
- time_t time;
- struct tm gm_time_tm;
- char date_str[16]; /* YYYYMMDDHHMMSS + 1 for Y100k compatibility ;-) */
- unsigned int i;
-
- file = fopen (filename, "r");
- if (! file) {
- fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno));
- exit (1);
- }
-
- stream = g_mime_stream_file_new (file);
-
- parser = g_mime_parser_new_with_stream (stream);
-
- message = g_mime_parser_construct_message (parser);
-
- doc = Xapian::Document ();
-
- doc.set_data (filename);
-
- term_gen.set_stemmer (Xapian::Stem ("english"));
-
- term_gen.set_document (doc);
-
- from = g_mime_message_get_sender (message);
- addresses = internet_address_list_parse_string (from);
-
- gen_terms_address_names (term_gen, addresses, "from_name");
-
- addresses = g_mime_message_get_all_recipients (message);
- gen_terms_address_names (term_gen, addresses, "to_name");
-
- subject = g_mime_message_get_subject (message);
- subject = skip_re_in_subject (subject);
- gen_terms (term_gen, "subject", subject);
- gen_terms (term_gen, "body", subject);
-
- gen_terms_part (term_gen, g_mime_message_get_mime_part (message));
-
- parents = g_ptr_array_new ();
-
- refs = g_mime_object_get_header (GMIME_OBJECT (message), "references");
- parse_references (parents, refs);
-
- in_reply_to = g_mime_object_get_header (GMIME_OBJECT (message),
- "in-reply-to");
- parse_references (parents, in_reply_to);
-
- for (i = 0; i < parents->len; i++)
- add_term (doc, "ref", (char *) g_ptr_array_index (parents, i));
-
- message_id = g_mime_message_get_message_id (message);
-
- thread_ids = find_thread_ids (db, parents, message_id);
-
- for (i = 0; i < parents->len; i++)
- g_free (g_ptr_array_index (parents, i));
- g_ptr_array_free (parents, TRUE);
-
- from = g_mime_message_get_sender (message);
- addresses = internet_address_list_parse_string (from);
-
- add_terms_address_addrs (doc, addresses, "from_email");
-
- add_terms_address_addrs (doc,
- g_mime_message_get_all_recipients (message),
- "to_email");
-
- g_mime_message_get_date (message, &time, NULL);
-
- gmtime_r (&time, &gm_time_tm);
-
- if (strftime (date_str, sizeof (date_str),
- "%Y%m%d%H%M%S", &gm_time_tm) == 0) {
- fprintf (stderr, "Internal error formatting time\n");
- exit (1);
- }
-
- add_term (doc, "date", date_str);
-
- add_term (doc, "label", "inbox");
- add_term (doc, "label", "unread");
- add_term (doc, "type", "mail");
- add_term (doc, "source_id", "1");
-
- if (message_id) {
- add_term (doc, "msgid", message_id);
- doc.add_value (NOTMUCH_VALUE_MESSAGE_ID, message_id);
- }
-
- if (thread_ids->len) {
- unsigned int i;
- GString *thread_id;
- char *id;
-
- for (i = 0; i < thread_ids->len; i++) {
- id = (char *) thread_ids->pdata[i];
-
- add_term (doc, "thread", id);
-
- if (i == 0)
- thread_id = g_string_new (id);
- else
- g_string_append_printf (thread_id, ",%s", id);
-
- free (id);
- }
- g_ptr_array_free (thread_ids, TRUE);
-
- doc.add_value (NOTMUCH_VALUE_THREAD, thread_id->str);
-
- g_string_free (thread_id, TRUE);
- } else if (message_id) {
- /* If not part of any existing thread, generate a new thread_id. */
- thread_id_t thread_id;
-
- thread_id_generate (&thread_id);
-
- add_term (doc, "thread", thread_id.str);
- doc.add_value (NOTMUCH_VALUE_THREAD, thread_id.str);
- }
-
- doc.add_value (NOTMUCH_VALUE_DATE, Xapian::sortable_serialise (time));
-
- db.add_document (doc);
-
- g_object_unref (message);
- g_object_unref (parser);
- g_object_unref (stream);
-}
-
-static void
-usage (const char *argv0)
-{
- fprintf (stderr, "Usage: %s <path-to-xapian-database>\n", argv0);
- fprintf (stderr, "\n");
- fprintf (stderr, "Messages to be indexed are read from stdnin as absolute filenames\n");
- fprintf (stderr, "one file per line.");
-}
-
-int
-main (int argc, char **argv)
-{
- const char *database_path;
- char *filename;
- GIOChannel *channel;
- GIOStatus gio_status;
- GError *error = NULL;
- int count;
- struct timeval tv_start, tv_last, tv_now;
- double elapsed;
-
- if (argc < 2) {
- usage (argv[0]);
- exit (1);
- }
-
- database_path = argv[1];
-
- g_mime_init (0);
-
- try {
- Xapian::WritableDatabase db;
- Xapian::TermGenerator term_gen;
-
- db = Xapian::WritableDatabase (database_path,
- Xapian::DB_CREATE_OR_OPEN);
-
- term_gen = Xapian::TermGenerator ();
-
- channel = g_io_channel_unix_new (fileno (stdin));
-
- count = 0;
-
- gettimeofday (&tv_start, NULL);
- tv_last = tv_start;
-
- while (1) {
- gio_status = g_io_channel_read_line (channel, &filename,
- NULL, NULL, &error);
- if (gio_status == G_IO_STATUS_EOF)
- break;
- if (gio_status != G_IO_STATUS_NORMAL) {
- fprintf (stderr, "An error occurred reading from stdin: %s\n",
- error->message);
- exit (1);
- }
-
- g_strchomp (filename);
- index_file (db, term_gen, filename);
-
- g_free (filename);
-
- count++;
- if (count % 1000 == 0) {
- gettimeofday (&tv_now, NULL);
- printf ("Indexed %d messages (%g messages/second)\n",
- count, 1000 / ((tv_now.tv_sec - tv_last.tv_sec) +
- (tv_now.tv_usec - tv_last.tv_usec) / 1e6));
- tv_last = tv_now;
- }
- }
-
- g_io_channel_unref (channel);
-
- gettimeofday (&tv_now, NULL);
- elapsed = (tv_now.tv_sec - tv_start.tv_sec +
- (tv_now.tv_usec - tv_start.tv_usec) / 1e6);
- printf ("Completed indexing of %d messages in %g seconds (%g messages/second)\n",
- count, elapsed, count / elapsed);
-
- } catch (const Xapian::Error &error) {
- cerr << "A Xapian exception occurred: " << error.get_msg () << endl;
- exit (1);
- }
-
- return 0;
-}
projects / notmuch / commitdiff