mirror of
https://git.notmuchmail.org/git/notmuch
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509 lines
14 KiB
C
509 lines
14 KiB
C
/* notmuch - Not much of an email program, (just index and search)
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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 "notmuch-client.h"
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#include <unistd.h>
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static volatile sig_atomic_t do_add_files_print_progress = 0;
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static void
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handle_sigalrm (unused (int signal))
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{
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do_add_files_print_progress = 1;
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}
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static volatile sig_atomic_t interrupted;
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static void
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handle_sigint (unused (int sig))
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{
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static char msg[] = "Stopping... \n";
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write(2, msg, sizeof(msg)-1);
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interrupted = 1;
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}
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static void
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tag_inbox_and_unread (notmuch_message_t *message)
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{
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notmuch_message_add_tag (message, "inbox");
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notmuch_message_add_tag (message, "unread");
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}
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static void
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add_files_print_progress (add_files_state_t *state)
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{
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struct timeval tv_now;
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double elapsed_overall, rate_overall;
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gettimeofday (&tv_now, NULL);
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elapsed_overall = notmuch_time_elapsed (state->tv_start, tv_now);
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rate_overall = (state->processed_files) / elapsed_overall;
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printf ("Processed %d", state->processed_files);
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if (state->total_files) {
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double time_remaining;
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time_remaining = ((state->total_files - state->processed_files) /
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rate_overall);
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printf (" of %d files (", state->total_files);
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notmuch_time_print_formatted_seconds (time_remaining);
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printf (" remaining). \r");
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} else {
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printf (" files (%d files/sec.) \r", (int) rate_overall);
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}
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fflush (stdout);
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}
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static int ino_cmp(const struct dirent **a, const struct dirent **b)
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{
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return ((*a)->d_ino < (*b)->d_ino) ? -1 : 1;
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}
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/* Examine 'path' recursively as follows:
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*
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* o Ask the filesystem for the mtime of 'path' (path_mtime)
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*
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* o Ask the database for its timestamp of 'path' (path_dbtime)
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*
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* o If 'path_mtime' > 'path_dbtime'
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*
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* o For each regular file in 'path' with mtime newer than the
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* 'path_dbtime' call add_message to add the file to the
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* database.
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*
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* o For each sub-directory of path, recursively call into this
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* same function.
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*
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* o Tell the database to update its time of 'path' to 'path_mtime'
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*
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* The 'struct stat *st' must point to a structure that has already
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* been initialized for 'path' by calling stat().
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*/
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static notmuch_status_t
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add_files_recursive (notmuch_database_t *notmuch,
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const char *path,
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struct stat *st,
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add_files_state_t *state)
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{
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DIR *dir = NULL;
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struct dirent *entry = NULL;
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char *next = NULL;
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time_t path_mtime, path_dbtime;
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notmuch_status_t status, ret = NOTMUCH_STATUS_SUCCESS;
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notmuch_message_t *message = NULL;
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struct dirent **namelist = NULL;
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int num_entries;
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/* If we're told to, we bail out on encountering a read-only
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* directory, (with this being a clear clue from the user to
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* Notmuch that new mail won't be arriving there and we need not
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* look. */
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if (state->ignore_read_only_directories &&
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(st->st_mode & S_IWUSR) == 0)
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{
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state->saw_read_only_directory = TRUE;
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goto DONE;
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}
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path_mtime = st->st_mtime;
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path_dbtime = notmuch_database_get_timestamp (notmuch, path);
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num_entries = scandir (path, &namelist, 0, ino_cmp);
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if (num_entries == -1) {
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fprintf (stderr, "Error opening directory %s: %s\n",
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path, strerror (errno));
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ret = NOTMUCH_STATUS_FILE_ERROR;
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goto DONE;
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}
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int i=0;
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while (!interrupted) {
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if (i == num_entries)
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break;
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entry= namelist[i++];
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/* If this directory hasn't been modified since the last
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* add_files, then we only need to look further for
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* sub-directories. */
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if (path_mtime <= path_dbtime && entry->d_type != DT_DIR)
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continue;
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/* Ignore special directories to avoid infinite recursion.
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* Also ignore the .notmuch directory.
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*/
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/* XXX: Eventually we'll want more sophistication to let the
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* user specify files to be ignored. */
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if (strcmp (entry->d_name, ".") == 0 ||
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strcmp (entry->d_name, "..") == 0 ||
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strcmp (entry->d_name, "tmp") == 0 ||
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strcmp (entry->d_name, ".notmuch") ==0)
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{
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continue;
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}
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next = talloc_asprintf (notmuch, "%s/%s", path, entry->d_name);
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if (stat (next, st)) {
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fprintf (stderr, "Error reading %s: %s\n",
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next, strerror (errno));
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ret = NOTMUCH_STATUS_FILE_ERROR;
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continue;
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}
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if (S_ISREG (st->st_mode)) {
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/* If the file hasn't been modified since the last
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* add_files, then we need not look at it. */
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if (path_dbtime == 0 || st->st_mtime > path_dbtime) {
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state->processed_files++;
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if (state->verbose) {
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if (state->output_is_a_tty)
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printf("\r\033[K");
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printf ("%i/%i: %s",
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state->processed_files,
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state->total_files,
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next);
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putchar((state->output_is_a_tty) ? '\r' : '\n');
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fflush (stdout);
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}
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status = notmuch_database_add_message (notmuch, next, &message);
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switch (status) {
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/* success */
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case NOTMUCH_STATUS_SUCCESS:
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state->added_messages++;
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tag_inbox_and_unread (message);
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break;
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/* Non-fatal issues (go on to next file) */
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case NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID:
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/* Stay silent on this one. */
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break;
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case NOTMUCH_STATUS_FILE_NOT_EMAIL:
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fprintf (stderr, "Note: Ignoring non-mail file: %s\n",
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next);
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break;
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/* Fatal issues. Don't process anymore. */
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case NOTMUCH_STATUS_READONLY_DATABASE:
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case NOTMUCH_STATUS_XAPIAN_EXCEPTION:
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case NOTMUCH_STATUS_OUT_OF_MEMORY:
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fprintf (stderr, "Error: %s. Halting processing.\n",
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notmuch_status_to_string (status));
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ret = status;
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goto DONE;
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default:
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case NOTMUCH_STATUS_FILE_ERROR:
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case NOTMUCH_STATUS_NULL_POINTER:
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case NOTMUCH_STATUS_TAG_TOO_LONG:
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case NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW:
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case NOTMUCH_STATUS_LAST_STATUS:
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INTERNAL_ERROR ("add_message returned unexpected value: %d", status);
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goto DONE;
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}
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if (message) {
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notmuch_message_destroy (message);
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message = NULL;
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}
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if (do_add_files_print_progress) {
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do_add_files_print_progress = 0;
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add_files_print_progress (state);
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}
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}
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} else if (S_ISDIR (st->st_mode)) {
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status = add_files_recursive (notmuch, next, st, state);
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if (status && ret == NOTMUCH_STATUS_SUCCESS)
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ret = status;
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}
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talloc_free (next);
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next = NULL;
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}
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status = notmuch_database_set_timestamp (notmuch, path, path_mtime);
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if (status && ret == NOTMUCH_STATUS_SUCCESS)
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ret = status;
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DONE:
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if (next)
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talloc_free (next);
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if (entry)
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free (entry);
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if (dir)
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closedir (dir);
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if (namelist)
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free (namelist);
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return ret;
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}
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/* This is the top-level entry point for add_files. It does a couple
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* of error checks, sets up the progress-printing timer and then calls
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* into the recursive function. */
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notmuch_status_t
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add_files (notmuch_database_t *notmuch,
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const char *path,
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add_files_state_t *state)
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{
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struct stat st;
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notmuch_status_t status;
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struct sigaction action;
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struct itimerval timerval;
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notmuch_bool_t timer_is_active = FALSE;
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if (stat (path, &st)) {
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fprintf (stderr, "Error reading directory %s: %s\n",
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path, strerror (errno));
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return NOTMUCH_STATUS_FILE_ERROR;
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}
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if (! S_ISDIR (st.st_mode)) {
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fprintf (stderr, "Error: %s is not a directory.\n", path);
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return NOTMUCH_STATUS_FILE_ERROR;
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}
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if (state->output_is_a_tty && ! debugger_is_active () && ! state->verbose) {
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/* Setup our handler for SIGALRM */
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memset (&action, 0, sizeof (struct sigaction));
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action.sa_handler = handle_sigalrm;
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sigemptyset (&action.sa_mask);
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action.sa_flags = SA_RESTART;
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sigaction (SIGALRM, &action, NULL);
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/* Then start a timer to send SIGALRM once per second. */
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timerval.it_interval.tv_sec = 1;
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timerval.it_interval.tv_usec = 0;
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timerval.it_value.tv_sec = 1;
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timerval.it_value.tv_usec = 0;
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setitimer (ITIMER_REAL, &timerval, NULL);
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timer_is_active = TRUE;
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}
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status = add_files_recursive (notmuch, path, &st, state);
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if (timer_is_active) {
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/* Now stop the timer. */
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timerval.it_interval.tv_sec = 0;
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timerval.it_interval.tv_usec = 0;
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timerval.it_value.tv_sec = 0;
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timerval.it_value.tv_usec = 0;
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setitimer (ITIMER_REAL, &timerval, NULL);
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/* And disable the signal handler. */
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action.sa_handler = SIG_IGN;
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sigaction (SIGALRM, &action, NULL);
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}
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return status;
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}
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/* XXX: This should be merged with the add_files function since it
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* shares a lot of logic with it. */
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/* Recursively count all regular files in path and all sub-directories
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* of path. The result is added to *count (which should be
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* initialized to zero by the top-level caller before calling
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* count_files). */
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static void
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count_files (const char *path, int *count)
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{
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struct dirent *entry = NULL;
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char *next;
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struct stat st;
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struct dirent **namelist = NULL;
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int n_entries = scandir (path, &namelist, 0, ino_cmp);
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int i = 0;
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if (n_entries == -1) {
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fprintf (stderr, "Warning: failed to open directory %s: %s\n",
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path, strerror (errno));
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goto DONE;
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}
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while (!interrupted) {
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if (i == n_entries)
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break;
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entry= namelist[i++];
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/* Ignore special directories to avoid infinite recursion.
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* Also ignore the .notmuch directory.
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*/
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/* XXX: Eventually we'll want more sophistication to let the
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* user specify files to be ignored. */
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if (strcmp (entry->d_name, ".") == 0 ||
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strcmp (entry->d_name, "..") == 0 ||
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strcmp (entry->d_name, ".notmuch") == 0)
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{
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continue;
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}
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if (asprintf (&next, "%s/%s", path, entry->d_name) == -1) {
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next = NULL;
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fprintf (stderr, "Error descending from %s to %s: Out of memory\n",
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path, entry->d_name);
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continue;
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}
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stat (next, &st);
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if (S_ISREG (st.st_mode)) {
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*count = *count + 1;
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if (*count % 1000 == 0) {
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printf ("Found %d files so far.\r", *count);
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fflush (stdout);
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}
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} else if (S_ISDIR (st.st_mode)) {
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count_files (next, count);
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}
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free (next);
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}
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DONE:
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if (entry)
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free (entry);
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if (namelist)
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free (namelist);
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}
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int
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notmuch_new_command (void *ctx, int argc, char *argv[])
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{
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notmuch_config_t *config;
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notmuch_database_t *notmuch;
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add_files_state_t add_files_state;
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double elapsed;
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struct timeval tv_now;
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int ret = 0;
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struct stat st;
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const char *db_path;
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char *dot_notmuch_path;
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struct sigaction action;
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int i;
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add_files_state.verbose = 0;
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add_files_state.output_is_a_tty = isatty (fileno (stdout));
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for (i = 0; i < argc && argv[i][0] == '-'; i++) {
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if (STRNCMP_LITERAL (argv[i], "--verbose") == 0) {
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add_files_state.verbose = 1;
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} else {
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fprintf (stderr, "Unrecognized option: %s\n", argv[i]);
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return 1;
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}
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}
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/* Setup our handler for SIGINT */
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memset (&action, 0, sizeof (struct sigaction));
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action.sa_handler = handle_sigint;
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sigemptyset (&action.sa_mask);
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action.sa_flags = SA_RESTART;
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sigaction (SIGINT, &action, NULL);
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config = notmuch_config_open (ctx, NULL, NULL);
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if (config == NULL)
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return 1;
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db_path = notmuch_config_get_database_path (config);
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dot_notmuch_path = talloc_asprintf (ctx, "%s/%s", db_path, ".notmuch");
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if (stat (dot_notmuch_path, &st)) {
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int count;
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count = 0;
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count_files (db_path, &count);
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if (interrupted)
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return 1;
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printf ("Found %d total files. \n", count);
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notmuch = notmuch_database_create (db_path);
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add_files_state.ignore_read_only_directories = FALSE;
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add_files_state.total_files = count;
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} else {
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notmuch = notmuch_database_open (db_path,
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NOTMUCH_DATABASE_MODE_READ_WRITE);
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add_files_state.ignore_read_only_directories = TRUE;
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add_files_state.total_files = 0;
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}
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if (notmuch == NULL)
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return 1;
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talloc_free (dot_notmuch_path);
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dot_notmuch_path = NULL;
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add_files_state.saw_read_only_directory = FALSE;
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add_files_state.processed_files = 0;
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add_files_state.added_messages = 0;
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gettimeofday (&add_files_state.tv_start, NULL);
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ret = add_files (notmuch, db_path, &add_files_state);
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gettimeofday (&tv_now, NULL);
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elapsed = notmuch_time_elapsed (add_files_state.tv_start,
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tv_now);
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if (add_files_state.processed_files) {
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printf ("Processed %d %s in ", add_files_state.processed_files,
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add_files_state.processed_files == 1 ?
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"file" : "total files");
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notmuch_time_print_formatted_seconds (elapsed);
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if (elapsed > 1) {
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printf (" (%d files/sec.). \n",
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(int) (add_files_state.processed_files / elapsed));
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} else {
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printf (". \n");
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}
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}
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if (add_files_state.added_messages) {
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printf ("Added %d new %s to the database (not much, really).\n",
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add_files_state.added_messages,
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add_files_state.added_messages == 1 ?
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"message" : "messages");
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} else {
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printf ("No new mail---and that's not much.\n");
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}
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if (elapsed > 1 && ! add_files_state.saw_read_only_directory) {
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printf ("\nTip: If you have any sub-directories that are archives (that is,\n"
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"they will never receive new mail), marking these directories as\n"
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"read-only (chmod u-w /path/to/dir) will make \"notmuch new\"\n"
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"much more efficient (it won't even look in those directories).\n");
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}
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if (ret) {
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printf ("\nNote: At least one error was encountered: %s\n",
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notmuch_status_to_string (ret));
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}
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notmuch_database_close (notmuch);
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return ret || interrupted;
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}
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