/* notmuch - Not much of an email program, (just index and search) * * 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 */ #include "notmuch-client.h" #include "hex-escape.h" #include "string-util.h" #include static int database_dump_file (notmuch_database_t *notmuch, gzFile output, const char *query_str, int output_format) { notmuch_query_t *query; notmuch_messages_t *messages; notmuch_message_t *message; notmuch_tags_t *tags; if (! query_str) query_str = ""; query = notmuch_query_create (notmuch, query_str); if (query == NULL) { fprintf (stderr, "Out of memory\n"); return EXIT_FAILURE; } /* Don't ask xapian to sort by Message-ID. Xapian optimizes returning the * first results quickly at the expense of total time. */ notmuch_query_set_sort (query, NOTMUCH_SORT_UNSORTED); char *buffer = NULL; size_t buffer_size = 0; for (messages = notmuch_query_search_messages (query); notmuch_messages_valid (messages); notmuch_messages_move_to_next (messages)) { int first = 1; const char *message_id; message = notmuch_messages_get (messages); message_id = notmuch_message_get_message_id (message); if (output_format == DUMP_FORMAT_BATCH_TAG && strchr (message_id, '\n')) { /* This will produce a line break in the output, which * would be difficult to handle in tools. However, it's * also impossible to produce an email containing a line * break in a message ID because of unfolding, so we can * safely disallow it. */ fprintf (stderr, "Warning: skipping message id containing line break: \"%s\"\n", message_id); notmuch_message_destroy (message); continue; } if (output_format == DUMP_FORMAT_SUP) { gzprintf (output, "%s (", message_id); } for (tags = notmuch_message_get_tags (message); notmuch_tags_valid (tags); notmuch_tags_move_to_next (tags)) { const char *tag_str = notmuch_tags_get (tags); if (! first) gzputs (output, " "); first = 0; if (output_format == DUMP_FORMAT_SUP) { gzputs (output, tag_str); } else { if (hex_encode (notmuch, tag_str, &buffer, &buffer_size) != HEX_SUCCESS) { fprintf (stderr, "Error: failed to hex-encode tag %s\n", tag_str); return EXIT_FAILURE; } gzprintf (output, "+%s", buffer); } } if (output_format == DUMP_FORMAT_SUP) { gzputs (output, ")\n"); } else { if (make_boolean_term (notmuch, "id", message_id, &buffer, &buffer_size)) { fprintf (stderr, "Error quoting message id %s: %s\n", message_id, strerror (errno)); return EXIT_FAILURE; } gzprintf (output, " -- %s\n", buffer); } notmuch_message_destroy (message); } notmuch_query_destroy (query); return EXIT_SUCCESS; } /* Dump database into output_file_name if it's non-NULL, stdout * otherwise. */ int notmuch_database_dump (notmuch_database_t *notmuch, const char *output_file_name, const char *query_str, dump_format_t output_format, notmuch_bool_t gzip_output) { gzFile output; const char *mode = gzip_output ? "w9" : "wT"; const char *name_for_error = output_file_name ? output_file_name : "stdout"; char *tempname = NULL; int outfd = -1; int ret = -1; if (output_file_name) { tempname = talloc_asprintf (notmuch, "%s.XXXXXX", output_file_name); outfd = mkstemp (tempname); } else { outfd = dup (STDOUT_FILENO); } if (outfd < 0) { fprintf (stderr, "Bad output file %s\n", name_for_error); goto DONE; } output = gzdopen (outfd, mode); if (output == NULL) { fprintf (stderr, "Error opening %s for (gzip) writing: %s\n", name_for_error, strerror (errno)); if (close (outfd)) fprintf (stderr, "Error closing %s during shutdown: %s\n", name_for_error, strerror (errno)); goto DONE; } ret = database_dump_file (notmuch, output, query_str, output_format); if (ret) goto DONE; ret = gzflush (output, Z_FINISH); if (ret) { fprintf (stderr, "Error flushing output: %s\n", gzerror (output, NULL)); goto DONE; } if (output_file_name) { ret = fdatasync (outfd); if (ret) { fprintf (stderr, "Error syncing %s to disk: %s\n", name_for_error, strerror (errno)); goto DONE; } } if (gzclose_w (output) != Z_OK) { ret = EXIT_FAILURE; goto DONE; } if (output_file_name) { ret = rename (tempname, output_file_name); if (ret) { fprintf (stderr, "Error renaming %s to %s: %s\n", tempname, output_file_name, strerror (errno)); goto DONE; } } DONE: if (ret != EXIT_SUCCESS && output_file_name) (void) unlink (tempname); return ret; } int notmuch_dump_command (notmuch_config_t *config, int argc, char *argv[]) { notmuch_database_t *notmuch; const char *query_str = NULL; int ret; if (notmuch_database_open (notmuch_config_get_database_path (config), NOTMUCH_DATABASE_MODE_READ_ONLY, ¬much)) return EXIT_FAILURE; char *output_file_name = NULL; int opt_index; int output_format = DUMP_FORMAT_BATCH_TAG; notmuch_bool_t gzip_output = 0; notmuch_opt_desc_t options[] = { { NOTMUCH_OPT_KEYWORD, &output_format, "format", 'f', (notmuch_keyword_t []){ { "sup", DUMP_FORMAT_SUP }, { "batch-tag", DUMP_FORMAT_BATCH_TAG }, { 0, 0 } } }, { NOTMUCH_OPT_STRING, &output_file_name, "output", 'o', 0 }, { NOTMUCH_OPT_BOOLEAN, &gzip_output, "gzip", 'z', 0 }, { 0, 0, 0, 0, 0 } }; opt_index = parse_arguments (argc, argv, options, 1); if (opt_index < 0) return EXIT_FAILURE; if (opt_index < argc) { query_str = query_string_from_args (notmuch, argc - opt_index, argv + opt_index); if (query_str == NULL) { fprintf (stderr, "Out of memory.\n"); return EXIT_FAILURE; } } ret = notmuch_database_dump (notmuch, output_file_name, query_str, output_format, gzip_output); notmuch_database_destroy (notmuch); return ret; }