/* 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 typedef struct _filename_node { char *filename; struct _filename_node *next; } _filename_node_t; typedef struct _filename_list { _filename_node_t *head; _filename_node_t **tail; } _filename_list_t; typedef struct { int output_is_a_tty; int verbose; const char **new_tags; size_t new_tags_length; int total_files; int processed_files; int added_messages; struct timeval tv_start; _filename_list_t *removed_files; _filename_list_t *removed_directories; } add_files_state_t; static volatile sig_atomic_t do_add_files_print_progress = 0; static void handle_sigalrm (unused (int signal)) { do_add_files_print_progress = 1; } static volatile sig_atomic_t interrupted; static void handle_sigint (unused (int sig)) { ssize_t ignored; static char msg[] = "Stopping... \n"; ignored = write(2, msg, sizeof(msg)-1); interrupted = 1; } static _filename_list_t * _filename_list_create (const void *ctx) { _filename_list_t *list; list = talloc (ctx, _filename_list_t); if (list == NULL) return NULL; list->head = NULL; list->tail = &list->head; return list; } static void _filename_list_add (_filename_list_t *list, const char *filename) { _filename_node_t *node = talloc (list, _filename_node_t); node->filename = talloc_strdup (list, filename); node->next = NULL; *(list->tail) = node; list->tail = &node->next; } static void add_files_print_progress (add_files_state_t *state) { struct timeval tv_now; double elapsed_overall, rate_overall; gettimeofday (&tv_now, NULL); elapsed_overall = notmuch_time_elapsed (state->tv_start, tv_now); rate_overall = (state->processed_files) / elapsed_overall; printf ("Processed %d", state->processed_files); if (state->total_files) { double time_remaining; time_remaining = ((state->total_files - state->processed_files) / rate_overall); printf (" of %d files (", state->total_files); notmuch_time_print_formatted_seconds (time_remaining); printf (" remaining). \r"); } else { printf (" files (%d files/sec.) \r", (int) rate_overall); } fflush (stdout); } static int dirent_sort_inode (const struct dirent **a, const struct dirent **b) { return ((*a)->d_ino < (*b)->d_ino) ? -1 : 1; } static int dirent_sort_strcmp_name (const struct dirent **a, const struct dirent **b) { return strcmp ((*a)->d_name, (*b)->d_name); } /* Test if the directory looks like a Maildir directory. * * Search through the array of directory entries to see if we can find all * three subdirectories typical for Maildir, that is "new", "cur", and "tmp". * * Return 1 if the directory looks like a Maildir and 0 otherwise. */ static int _entries_resemble_maildir (struct dirent **entries, int count) { int i, found = 0; for (i = 0; i < count; i++) { if (entries[i]->d_type != DT_DIR && entries[i]->d_type != DT_UNKNOWN) continue; if (strcmp(entries[i]->d_name, "new") == 0 || strcmp(entries[i]->d_name, "cur") == 0 || strcmp(entries[i]->d_name, "tmp") == 0) { found++; if (found == 3) return 1; } } return 0; } /* Examine 'path' recursively as follows: * * o Ask the filesystem for the mtime of 'path' (fs_mtime) * o Ask the database for its timestamp of 'path' (db_mtime) * * o Ask the filesystem for files and directories within 'path' * (via scandir and stored in fs_entries) * o Ask the database for files and directories within 'path' * (db_files and db_subdirs) * * o Pass 1: For each directory in fs_entries, recursively call into * this same function. * * o Pass 2: If 'fs_mtime' > 'db_mtime', then walk fs_entries * simultaneously with db_files and db_subdirs. Look for one of * three interesting cases: * * 1. Regular file in fs_entries and not in db_files * This is a new file to add_message into the database. * * 2. Filename in db_files not in fs_entries. * This is a file that has been removed from the mail store. * * 3. Directory in db_subdirs not in fs_entries * This is a directory that has been removed from the mail store. * * Note that the addition of a directory is not interesting here, * since that will have been taken care of in pass 1. Also, we * don't immediately act on file/directory removal since we must * ensure that in the case of a rename that the new filename is * added before the old filename is removed, (so that no * information is lost from the database). * * o Tell the database to update its time of 'path' to 'fs_mtime' */ static notmuch_status_t add_files_recursive (notmuch_database_t *notmuch, const char *path, add_files_state_t *state) { DIR *dir = NULL; struct dirent *entry = NULL; char *next = NULL; time_t fs_mtime, db_mtime; notmuch_status_t status, ret = NOTMUCH_STATUS_SUCCESS; notmuch_message_t *message = NULL; struct dirent **fs_entries = NULL; int i, num_fs_entries; notmuch_directory_t *directory; notmuch_filenames_t *db_files = NULL; notmuch_filenames_t *db_subdirs = NULL; struct stat st; notmuch_bool_t is_maildir, new_directory; const char **tag; if (stat (path, &st)) { fprintf (stderr, "Error reading directory %s: %s\n", path, strerror (errno)); return NOTMUCH_STATUS_FILE_ERROR; } /* This is not an error since we may have recursed based on a * symlink to a regular file, not a directory, and we don't know * that until this stat. */ if (! S_ISDIR (st.st_mode)) return NOTMUCH_STATUS_SUCCESS; fs_mtime = st.st_mtime; directory = notmuch_database_get_directory (notmuch, path); db_mtime = notmuch_directory_get_mtime (directory); if (db_mtime == 0) { new_directory = TRUE; db_files = NULL; db_subdirs = NULL; } else { new_directory = FALSE; db_files = notmuch_directory_get_child_files (directory); db_subdirs = notmuch_directory_get_child_directories (directory); } /* If the database knows about this directory, then we sort based * on strcmp to match the database sorting. Otherwise, we can do * inode-based sorting for faster filesystem operation. */ num_fs_entries = scandir (path, &fs_entries, 0, new_directory ? dirent_sort_inode : dirent_sort_strcmp_name); if (num_fs_entries == -1) { fprintf (stderr, "Error opening directory %s: %s\n", path, strerror (errno)); ret = NOTMUCH_STATUS_FILE_ERROR; goto DONE; } /* Pass 1: Recurse into all sub-directories. */ is_maildir = _entries_resemble_maildir (fs_entries, num_fs_entries); for (i = 0; i < num_fs_entries; i++) { if (interrupted) break; entry = fs_entries[i]; /* We only want to descend into directories. * But symlinks can be to directories too, of course. * * And if the filesystem doesn't tell us the file type in the * scandir results, then it might be a directory (and if not, * then we'll stat and return immediately in the next level of * recursion). */ if (entry->d_type != DT_DIR && entry->d_type != DT_LNK && entry->d_type != DT_UNKNOWN) { continue; } /* Ignore special directories to avoid infinite recursion. * Also ignore the .notmuch directory and any "tmp" directory * that appears within a maildir. */ /* XXX: Eventually we'll want more sophistication to let the * user specify files to be ignored. */ if (strcmp (entry->d_name, ".") == 0 || strcmp (entry->d_name, "..") == 0 || (is_maildir && strcmp (entry->d_name, "tmp") == 0) || strcmp (entry->d_name, ".notmuch") ==0) { continue; } next = talloc_asprintf (notmuch, "%s/%s", path, entry->d_name); status = add_files_recursive (notmuch, next, state); if (status && ret == NOTMUCH_STATUS_SUCCESS) ret = status; talloc_free (next); next = NULL; } /* If this directory hasn't been modified since the last * "notmuch new", then we can skip the second pass entirely. */ if (fs_mtime <= db_mtime) goto DONE; /* Pass 2: Scan for new files, removed files, and removed directories. */ for (i = 0; i < num_fs_entries; i++) { if (interrupted) break; entry = fs_entries[i]; /* Check if we've walked past any names in db_files or * db_subdirs. If so, these have been deleted. */ while (notmuch_filenames_valid (db_files) && strcmp (notmuch_filenames_get (db_files), entry->d_name) < 0) { char *absolute = talloc_asprintf (state->removed_files, "%s/%s", path, notmuch_filenames_get (db_files)); _filename_list_add (state->removed_files, absolute); notmuch_filenames_move_to_next (db_files); } while (notmuch_filenames_valid (db_subdirs) && strcmp (notmuch_filenames_get (db_subdirs), entry->d_name) <= 0) { const char *filename = notmuch_filenames_get (db_subdirs); if (strcmp (filename, entry->d_name) < 0) { char *absolute = talloc_asprintf (state->removed_directories, "%s/%s", path, filename); _filename_list_add (state->removed_directories, absolute); } notmuch_filenames_move_to_next (db_subdirs); } /* If we're looking at a symlink, we only want to add it if it * links to a regular file, (and not to a directory, say). * * Similarly, if the file is of unknown type (due to filesytem * limitations), then we also need to look closer. * * In either case, a stat does the trick. */ if (entry->d_type == DT_LNK || entry->d_type == DT_UNKNOWN) { int err; next = talloc_asprintf (notmuch, "%s/%s", path, entry->d_name); err = stat (next, &st); talloc_free (next); next = NULL; /* Don't emit an error for a link pointing nowhere, since * the directory-traversal pass will have already done * that. */ if (err) continue; if (! S_ISREG (st.st_mode)) continue; } else if (entry->d_type != DT_REG) { continue; } /* Don't add a file that we've added before. */ if (notmuch_filenames_valid (db_files) && strcmp (notmuch_filenames_get (db_files), entry->d_name) == 0) { notmuch_filenames_move_to_next (db_files); continue; } /* We're now looking at a regular file that doesn't yet exist * in the database, so add it. */ next = talloc_asprintf (notmuch, "%s/%s", path, entry->d_name); state->processed_files++; if (state->verbose) { if (state->output_is_a_tty) printf("\r\033[K"); printf ("%i/%i: %s", state->processed_files, state->total_files, next); putchar((state->output_is_a_tty) ? '\r' : '\n'); fflush (stdout); } status = notmuch_database_add_message (notmuch, next, &message); switch (status) { /* success */ case NOTMUCH_STATUS_SUCCESS: state->added_messages++; for (tag=state->new_tags; *tag != NULL; tag++) notmuch_message_add_tag (message, *tag); break; /* Non-fatal issues (go on to next file) */ case NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID: /* Stay silent on this one. */ break; case NOTMUCH_STATUS_FILE_NOT_EMAIL: fprintf (stderr, "Note: Ignoring non-mail file: %s\n", next); break; /* Fatal issues. Don't process anymore. */ case NOTMUCH_STATUS_READ_ONLY_DATABASE: case NOTMUCH_STATUS_XAPIAN_EXCEPTION: case NOTMUCH_STATUS_OUT_OF_MEMORY: fprintf (stderr, "Error: %s. Halting processing.\n", notmuch_status_to_string (status)); ret = status; goto DONE; default: case NOTMUCH_STATUS_FILE_ERROR: case NOTMUCH_STATUS_NULL_POINTER: case NOTMUCH_STATUS_TAG_TOO_LONG: case NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW: case NOTMUCH_STATUS_LAST_STATUS: INTERNAL_ERROR ("add_message returned unexpected value: %d", status); goto DONE; } if (message) { notmuch_message_destroy (message); message = NULL; } if (do_add_files_print_progress) { do_add_files_print_progress = 0; add_files_print_progress (state); } talloc_free (next); next = NULL; } if (interrupted) goto DONE; /* Now that we've walked the whole filesystem list, anything left * over in the database lists has been deleted. */ while (notmuch_filenames_valid (db_files)) { char *absolute = talloc_asprintf (state->removed_files, "%s/%s", path, notmuch_filenames_get (db_files)); _filename_list_add (state->removed_files, absolute); notmuch_filenames_move_to_next (db_files); } while (notmuch_filenames_valid (db_subdirs)) { char *absolute = talloc_asprintf (state->removed_directories, "%s/%s", path, notmuch_filenames_get (db_subdirs)); _filename_list_add (state->removed_directories, absolute); notmuch_filenames_move_to_next (db_subdirs); } if (! interrupted) { status = notmuch_directory_set_mtime (directory, fs_mtime); if (status && ret == NOTMUCH_STATUS_SUCCESS) ret = status; } DONE: if (next) talloc_free (next); if (entry) free (entry); if (dir) closedir (dir); if (fs_entries) free (fs_entries); if (db_subdirs) notmuch_filenames_destroy (db_subdirs); if (db_files) notmuch_filenames_destroy (db_files); if (directory) notmuch_directory_destroy (directory); return ret; } /* This is the top-level entry point for add_files. It does a couple * of error checks, sets up the progress-printing timer and then calls * into the recursive function. */ static notmuch_status_t add_files (notmuch_database_t *notmuch, const char *path, add_files_state_t *state) { notmuch_status_t status; struct sigaction action; struct itimerval timerval; notmuch_bool_t timer_is_active = FALSE; struct stat st; if (state->output_is_a_tty && ! debugger_is_active () && ! state->verbose) { /* Setup 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; } if (stat (path, &st)) { fprintf (stderr, "Error reading directory %s: %s\n", path, strerror (errno)); return NOTMUCH_STATUS_FILE_ERROR; } if (! S_ISDIR (st.st_mode)) { fprintf (stderr, "Error: %s is not a directory.\n", path); return NOTMUCH_STATUS_FILE_ERROR; } status = add_files_recursive (notmuch, path, state); 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); } return status; } /* XXX: This should be merged with the add_files function since it * shares a lot of logic with it. */ /* Recursively count all regular files in path and all sub-directories * of path. The result is added to *count (which should be * initialized to zero by the top-level caller before calling * count_files). */ static void count_files (const char *path, int *count) { struct dirent *entry = NULL; char *next; struct stat st; struct dirent **fs_entries = NULL; int num_fs_entries = scandir (path, &fs_entries, 0, dirent_sort_inode); int i = 0; if (num_fs_entries == -1) { fprintf (stderr, "Warning: failed to open directory %s: %s\n", path, strerror (errno)); goto DONE; } while (!interrupted) { if (i == num_fs_entries) break; entry = fs_entries[i++]; /* Ignore special directories to avoid infinite recursion. * Also ignore the .notmuch directory. */ /* XXX: Eventually we'll want more sophistication to let the * user specify files to be ignored. */ if (strcmp (entry->d_name, ".") == 0 || strcmp (entry->d_name, "..") == 0 || strcmp (entry->d_name, ".notmuch") == 0) { continue; } if (asprintf (&next, "%s/%s", path, entry->d_name) == -1) { next = NULL; fprintf (stderr, "Error descending from %s to %s: Out of memory\n", path, entry->d_name); continue; } stat (next, &st); if (S_ISREG (st.st_mode)) { *count = *count + 1; if (*count % 1000 == 0) { printf ("Found %d files so far.\r", *count); fflush (stdout); } } else if (S_ISDIR (st.st_mode)) { count_files (next, count); } free (next); } DONE: if (entry) free (entry); if (fs_entries) free (fs_entries); } static void upgrade_print_progress (void *closure, double progress) { add_files_state_t *state = closure; printf ("Upgrading database: %.2f%% complete", progress * 100.0); if (progress > 0) { struct timeval tv_now; double elapsed, time_remaining; gettimeofday (&tv_now, NULL); elapsed = notmuch_time_elapsed (state->tv_start, tv_now); time_remaining = (elapsed / progress) * (1.0 - progress); printf (" ("); notmuch_time_print_formatted_seconds (time_remaining); printf (" remaining)"); } printf (". \r"); fflush (stdout); } /* Recursively remove all filenames from the database referring to * 'path' (or to any of its children). */ static void _remove_directory (void *ctx, notmuch_database_t *notmuch, const char *path, int *renamed_files, int *removed_files) { notmuch_directory_t *directory; notmuch_filenames_t *files, *subdirs; notmuch_status_t status; char *absolute; directory = notmuch_database_get_directory (notmuch, path); for (files = notmuch_directory_get_child_files (directory); notmuch_filenames_valid (files); notmuch_filenames_move_to_next (files)) { absolute = talloc_asprintf (ctx, "%s/%s", path, notmuch_filenames_get (files)); status = notmuch_database_remove_message (notmuch, absolute); if (status == NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID) *renamed_files = *renamed_files + 1; else *removed_files = *removed_files + 1; talloc_free (absolute); } for (subdirs = notmuch_directory_get_child_directories (directory); notmuch_filenames_valid (subdirs); notmuch_filenames_move_to_next (subdirs)) { absolute = talloc_asprintf (ctx, "%s/%s", path, notmuch_filenames_get (subdirs)); _remove_directory (ctx, notmuch, absolute, renamed_files, removed_files); talloc_free (absolute); } notmuch_directory_destroy (directory); } int notmuch_new_command (void *ctx, int argc, char *argv[]) { notmuch_config_t *config; notmuch_database_t *notmuch; add_files_state_t add_files_state; double elapsed; struct timeval tv_now; int ret = 0; struct stat st; const char *db_path; char *dot_notmuch_path; struct sigaction action; _filename_node_t *f; int renamed_files, removed_files; notmuch_status_t status; int i; add_files_state.verbose = 0; add_files_state.output_is_a_tty = isatty (fileno (stdout)); for (i = 0; i < argc && argv[i][0] == '-'; i++) { if (STRNCMP_LITERAL (argv[i], "--verbose") == 0) { add_files_state.verbose = 1; } else { fprintf (stderr, "Unrecognized option: %s\n", argv[i]); return 1; } } config = notmuch_config_open (ctx, NULL, NULL); if (config == NULL) return 1; add_files_state.new_tags = notmuch_config_get_new_tags (config, &add_files_state.new_tags_length); db_path = notmuch_config_get_database_path (config); dot_notmuch_path = talloc_asprintf (ctx, "%s/%s", db_path, ".notmuch"); if (stat (dot_notmuch_path, &st)) { int count; count = 0; count_files (db_path, &count); if (interrupted) return 1; printf ("Found %d total files (that's not much mail).\n", count); notmuch = notmuch_database_create (db_path); add_files_state.total_files = count; } else { notmuch = notmuch_database_open (db_path, NOTMUCH_DATABASE_MODE_READ_WRITE); if (notmuch == NULL) return 1; if (notmuch_database_needs_upgrade (notmuch)) { printf ("Welcome to a new version of notmuch! Your database will now be upgraded.\n"); gettimeofday (&add_files_state.tv_start, NULL); notmuch_database_upgrade (notmuch, upgrade_print_progress, &add_files_state); printf ("Your notmuch database has now been upgraded to database format version %u.\n", notmuch_database_get_version (notmuch)); } add_files_state.total_files = 0; } if (notmuch == NULL) return 1; /* Setup our handler for SIGINT. We do this after having * potentially done a database upgrade we this interrupt handler * won't support. */ memset (&action, 0, sizeof (struct sigaction)); action.sa_handler = handle_sigint; sigemptyset (&action.sa_mask); action.sa_flags = SA_RESTART; sigaction (SIGINT, &action, NULL); talloc_free (dot_notmuch_path); dot_notmuch_path = NULL; add_files_state.processed_files = 0; add_files_state.added_messages = 0; gettimeofday (&add_files_state.tv_start, NULL); add_files_state.removed_files = _filename_list_create (ctx); add_files_state.removed_directories = _filename_list_create (ctx); ret = add_files (notmuch, db_path, &add_files_state); removed_files = 0; renamed_files = 0; for (f = add_files_state.removed_files->head; f; f = f->next) { status = notmuch_database_remove_message (notmuch, f->filename); if (status == NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID) renamed_files++; else removed_files++; } for (f = add_files_state.removed_directories->head; f; f = f->next) { _remove_directory (ctx, notmuch, f->filename, &renamed_files, &removed_files); } talloc_free (add_files_state.removed_files); talloc_free (add_files_state.removed_directories); gettimeofday (&tv_now, NULL); elapsed = notmuch_time_elapsed (add_files_state.tv_start, tv_now); if (add_files_state.processed_files) { printf ("Processed %d %s in ", add_files_state.processed_files, add_files_state.processed_files == 1 ? "file" : "total files"); notmuch_time_print_formatted_seconds (elapsed); if (elapsed > 1) { printf (" (%d files/sec.). \n", (int) (add_files_state.processed_files / elapsed)); } else { printf (". \n"); } } if (add_files_state.added_messages) { printf ("Added %d new %s to the database.", add_files_state.added_messages, add_files_state.added_messages == 1 ? "message" : "messages"); } else { printf ("No new mail."); } if (removed_files) { printf (" Removed %d %s.", removed_files, removed_files == 1 ? "message" : "messages"); } if (renamed_files) { printf (" Detected %d file %s.", renamed_files, renamed_files == 1 ? "rename" : "renames"); } printf ("\n"); if (ret) { printf ("\nNote: At least one error was encountered: %s\n", notmuch_status_to_string (ret)); } notmuch_database_close (notmuch); return ret || interrupted; }