mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-23 11:28:13 +01:00
126347b694
[dgit import orig notmuch_0.38.2.orig.tar.xz]
619 lines
16 KiB
C
619 lines
16 KiB
C
/* notmuch - Not much of an email program, (just index and search)
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*
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* Copyright © 2013 Peter Wang
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*
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* Based in part on notmuch-deliver
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* Copyright © 2010 Ali Polatel
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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 https://www.gnu.org/licenses/ .
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*
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* Author: Peter Wang <novalazy@gmail.com>
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*/
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#include "notmuch-client.h"
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#include "tag-util.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "string-util.h"
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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 const char msg[] = "Stopping... \n";
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/* This write is "opportunistic", so it's okay to ignore the
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* result. It is not required for correctness, and if it does
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* fail or produce a short write, we want to get out of the signal
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* handler as quickly as possible, not retry it. */
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IGNORE_RESULT (write (2, msg, sizeof (msg) - 1));
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interrupted = 1;
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}
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/* Like gethostname but guarantees that a null-terminated hostname is
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* returned, even if it has to make one up. Invalid characters are
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* substituted such that the hostname can be used within a filename.
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*/
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static void
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safe_gethostname (char *hostname, size_t len)
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{
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char *p;
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if (gethostname (hostname, len) == -1) {
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strncpy (hostname, "unknown", len);
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}
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hostname[len - 1] = '\0';
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for (p = hostname; *p != '\0'; p++) {
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if (*p == '/' || *p == ':')
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*p = '_';
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}
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}
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/* Call fsync() on a directory path. */
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static bool
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sync_dir (const char *dir)
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{
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int fd, r;
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fd = open (dir, O_RDONLY);
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if (fd == -1) {
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fprintf (stderr, "Error: open %s: %s\n", dir, strerror (errno));
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return false;
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}
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r = fsync (fd);
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if (r)
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fprintf (stderr, "Error: fsync %s: %s\n", dir, strerror (errno));
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close (fd);
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return r == 0;
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}
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/*
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* Check the specified folder name does not contain a directory
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* component ".." to prevent writes outside of the Maildir
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* hierarchy. Return true on valid folder name, false otherwise.
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*/
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static bool
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is_valid_folder_name (const char *folder)
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{
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const char *p = folder;
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for (;;) {
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if ((p[0] == '.') && (p[1] == '.') && (p[2] == '\0' || p[2] == '/'))
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return false;
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p = strchr (p, '/');
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if (! p)
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return true;
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p++;
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}
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}
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/*
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* Make the given directory and its parents as necessary, using the
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* given mode. Return true on success, false otherwise. Partial
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* results are not cleaned up on errors.
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*/
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static bool
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mkdir_recursive (const void *ctx, const char *path, int mode)
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{
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struct stat st;
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int r;
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char *parent = NULL, *slash;
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/* First check the common case: directory already exists. */
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r = stat (path, &st);
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if (r == 0) {
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if (! S_ISDIR (st.st_mode)) {
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fprintf (stderr, "Error: '%s' is not a directory: %s\n",
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path, strerror (EEXIST));
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return false;
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}
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return true;
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} else if (errno != ENOENT) {
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fprintf (stderr, "Error: stat '%s': %s\n", path, strerror (errno));
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return false;
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}
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/* mkdir parents, if any */
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slash = strrchr (path, '/');
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if (slash && slash != path) {
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parent = talloc_strndup (ctx, path, slash - path);
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if (! parent) {
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fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
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return false;
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}
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if (! mkdir_recursive (ctx, parent, mode))
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return false;
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}
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if (mkdir (path, mode)) {
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fprintf (stderr, "Error: mkdir '%s': %s\n", path, strerror (errno));
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return false;
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}
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return parent ? sync_dir (parent) : true;
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}
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/*
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* Create the given maildir folder, i.e. maildir and its
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* subdirectories cur/new/tmp. Return true on success, false
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* otherwise. Partial results are not cleaned up on errors.
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*/
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static bool
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maildir_create_folder (const void *ctx, const char *maildir, bool world_readable)
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{
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const char *subdirs[] = { "cur", "new", "tmp" };
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const int mode = (world_readable ? 0755 : 0700);
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char *subdir;
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE (subdirs); i++) {
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subdir = talloc_asprintf (ctx, "%s/%s", maildir, subdirs[i]);
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if (! subdir) {
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fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
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return false;
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}
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if (! mkdir_recursive (ctx, subdir, mode))
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return false;
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}
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return true;
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}
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/*
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* Generate a temporary file basename, no path, do not create an
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* actual file. Return the basename, or NULL on errors.
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*/
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static char *
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tempfilename (const void *ctx)
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{
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char *filename;
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char hostname[256];
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struct timeval tv;
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pid_t pid;
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/* We follow the Dovecot file name generation algorithm. */
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pid = getpid ();
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safe_gethostname (hostname, sizeof (hostname));
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gettimeofday (&tv, NULL);
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filename = talloc_asprintf (ctx, "%ld.M%ldP%d.%s",
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(long) tv.tv_sec, (long) tv.tv_usec, pid, hostname);
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if (! filename)
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fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
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return filename;
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}
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/*
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* Create a unique temporary file in maildir/tmp, return fd and full
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* path to file in *path_out, or -1 on errors (in which case *path_out
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* is not touched).
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*/
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static int
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maildir_mktemp (const void *ctx, const char *maildir, bool world_readable, char **path_out)
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{
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char *filename, *path;
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int fd;
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const int mode = (world_readable ? 0644 : 0600);
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do {
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filename = tempfilename (ctx);
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if (! filename)
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return -1;
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path = talloc_asprintf (ctx, "%s/tmp/%s", maildir, filename);
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if (! path) {
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fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
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return -1;
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}
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fd = open (path, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, mode);
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} while (fd == -1 && errno == EEXIST);
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if (fd == -1) {
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fprintf (stderr, "Error: open '%s': %s\n", path, strerror (errno));
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return -1;
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}
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*path_out = path;
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return fd;
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}
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static bool
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write_buf (const char *buf, int fdout, ssize_t remain)
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{
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const char *p = buf;
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do {
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ssize_t written = write (fdout, p, remain);
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if (written < 0 && errno == EINTR)
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continue;
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if (written <= 0) {
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fprintf (stderr, "Error: writing to temporary file: %s",
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strerror (errno));
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return false;
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}
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p += written;
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remain -= written;
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} while (remain > 0);
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return true;
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}
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/*
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* Copy fdin to fdout, return true on success, and false on errors and
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* empty input.
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*/
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static bool
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copy_fd (int fdout, int fdin)
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{
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bool empty = true;
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bool first = true;
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const char *header = "X-Envelope-From: ";
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while (! interrupted) {
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ssize_t remain;
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char buf[4096];
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const char *p = buf;
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remain = read (fdin, buf, sizeof (buf));
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if (remain == 0)
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break;
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if (remain < 0) {
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if (errno == EINTR)
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continue;
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fprintf (stderr, "Error: reading from standard input: %s\n",
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strerror (errno));
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return false;
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}
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if (first && remain >= 5 && 0 == strncmp (buf, "From ", 5)) {
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if (! write_buf (header, fdout, strlen (header)))
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return false;
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p += 5;
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remain -= 5;
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}
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first = false;
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if (! write_buf (p, fdout, remain))
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return false;
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empty = false;
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}
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return (! interrupted && ! empty);
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}
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/*
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* Write fdin to a new temp file in maildir/tmp, return full path to
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* the file, or NULL on errors.
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*/
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static char *
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maildir_write_tmp (const void *ctx, int fdin, const char *maildir, bool world_readable)
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{
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char *path;
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int fdout;
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fdout = maildir_mktemp (ctx, maildir, world_readable, &path);
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if (fdout < 0)
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return NULL;
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if (! copy_fd (fdout, fdin))
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goto FAIL;
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if (fsync (fdout)) {
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fprintf (stderr, "Error: fsync '%s': %s\n", path, strerror (errno));
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goto FAIL;
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}
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close (fdout);
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return path;
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FAIL:
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close (fdout);
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unlink (path);
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return NULL;
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}
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/*
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* Write fdin to a new file in maildir/new, using an intermediate temp
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* file in maildir/tmp, return full path to the new file, or NULL on
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* errors.
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*/
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static char *
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maildir_write_new (const void *ctx, int fdin, const char *maildir, bool world_readable)
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{
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char *cleanpath, *tmppath, *newpath, *newdir;
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tmppath = maildir_write_tmp (ctx, fdin, maildir, world_readable);
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if (! tmppath)
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return NULL;
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cleanpath = tmppath;
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newpath = talloc_strdup (ctx, tmppath);
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if (! newpath) {
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fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
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goto FAIL;
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}
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/* sanity checks needed? */
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memcpy (newpath + strlen (maildir) + 1, "new", 3);
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if (rename (tmppath, newpath)) {
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fprintf (stderr, "Error: rename '%s' '%s': %s\n",
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tmppath, newpath, strerror (errno));
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goto FAIL;
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}
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cleanpath = newpath;
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newdir = talloc_asprintf (ctx, "%s/%s", maildir, "new");
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if (! newdir) {
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fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
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goto FAIL;
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}
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if (! sync_dir (newdir))
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goto FAIL;
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return newpath;
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FAIL:
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unlink (cleanpath);
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return NULL;
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}
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|
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/*
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* Add the specified message file to the notmuch database, applying
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* tags in tag_ops. If synchronize_flags is true, the tags are
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* synchronized to maildir flags (which may result in message file
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* rename).
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*
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* Return NOTMUCH_STATUS_SUCCESS on success, errors otherwise. If keep
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* is true, errors in tag changes and flag syncing are ignored and
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* success status is returned; otherwise such errors cause the message
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* to be removed from the database. Failure to add the message to the
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* database results in error status regardless of keep.
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*/
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static notmuch_status_t
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add_file (notmuch_database_t *notmuch, const char *path, tag_op_list_t *tag_ops,
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bool synchronize_flags, bool keep,
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notmuch_indexopts_t *indexopts)
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{
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notmuch_message_t *message;
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notmuch_status_t status;
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status = notmuch_database_index_file (notmuch, path, indexopts, &message);
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if (status == NOTMUCH_STATUS_SUCCESS) {
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status = tag_op_list_apply (message, tag_ops, 0);
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if (status) {
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fprintf (stderr, "%s: failed to apply tags to file '%s': %s\n",
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keep ? "Warning" : "Error",
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path, notmuch_status_to_string (status));
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goto DONE;
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}
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} else if (status == NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID) {
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status = NOTMUCH_STATUS_SUCCESS;
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} else if (status == NOTMUCH_STATUS_FILE_NOT_EMAIL) {
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|
fprintf (stderr, "Error: delivery of non-mail file: '%s'\n", path);
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|
goto FAIL;
|
|
} else {
|
|
fprintf (stderr, "Error: failed to add '%s' to notmuch database: %s\n",
|
|
path, notmuch_status_to_string (status));
|
|
goto FAIL;
|
|
}
|
|
|
|
if (synchronize_flags) {
|
|
status = notmuch_message_tags_to_maildir_flags (message);
|
|
if (status != NOTMUCH_STATUS_SUCCESS)
|
|
fprintf (stderr, "%s: failed to sync tags to maildir flags for '%s': %s\n",
|
|
keep ? "Warning" : "Error",
|
|
path, notmuch_status_to_string (status));
|
|
|
|
/*
|
|
* Note: Unfortunately a failed maildir flag sync might
|
|
* already have renamed the file, in which case the cleanup
|
|
* path may fail.
|
|
*/
|
|
}
|
|
|
|
DONE:
|
|
notmuch_message_destroy (message);
|
|
|
|
if (status) {
|
|
if (keep) {
|
|
status = NOTMUCH_STATUS_SUCCESS;
|
|
} else {
|
|
notmuch_status_t cleanup_status;
|
|
|
|
cleanup_status = notmuch_database_remove_message (notmuch, path);
|
|
if (cleanup_status != NOTMUCH_STATUS_SUCCESS &&
|
|
cleanup_status != NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID) {
|
|
fprintf (stderr, "Warning: failed to remove '%s' from database "
|
|
"after errors: %s. Please run 'notmuch new' to fix.\n",
|
|
path, notmuch_status_to_string (cleanup_status));
|
|
}
|
|
}
|
|
}
|
|
|
|
FAIL:
|
|
return status;
|
|
}
|
|
|
|
int
|
|
notmuch_insert_command (notmuch_database_t *notmuch, int argc, char *argv[])
|
|
{
|
|
notmuch_status_t status, close_status;
|
|
struct sigaction action;
|
|
const char *mail_root;
|
|
notmuch_config_values_t *new_tags = NULL;
|
|
tag_op_list_t *tag_ops;
|
|
char *query_string = NULL;
|
|
const char *folder = "";
|
|
bool create_folder = false;
|
|
bool keep = false;
|
|
bool hooks = true;
|
|
bool world_readable = false;
|
|
notmuch_bool_t synchronize_flags;
|
|
char *maildir;
|
|
char *newpath;
|
|
int opt_index;
|
|
notmuch_indexopts_t *indexopts = notmuch_database_get_default_indexopts (notmuch);
|
|
|
|
void *local = talloc_new (NULL);
|
|
|
|
notmuch_opt_desc_t options[] = {
|
|
{ .opt_string = &folder, .name = "folder", .allow_empty = true },
|
|
{ .opt_bool = &create_folder, .name = "create-folder" },
|
|
{ .opt_bool = &keep, .name = "keep" },
|
|
{ .opt_bool = &hooks, .name = "hooks" },
|
|
{ .opt_bool = &world_readable, .name = "world-readable" },
|
|
{ .opt_inherit = notmuch_shared_indexing_options },
|
|
{ .opt_inherit = notmuch_shared_options },
|
|
{ }
|
|
};
|
|
|
|
opt_index = parse_arguments (argc, argv, options, 1);
|
|
if (opt_index < 0)
|
|
return EXIT_FAILURE;
|
|
|
|
notmuch_process_shared_options (notmuch, argv[0]);
|
|
|
|
mail_root = notmuch_config_get (notmuch, NOTMUCH_CONFIG_MAIL_ROOT);
|
|
|
|
new_tags = notmuch_config_get_values (notmuch, NOTMUCH_CONFIG_NEW_TAGS);
|
|
|
|
if (print_status_database (
|
|
"notmuch insert",
|
|
notmuch,
|
|
notmuch_config_get_bool (notmuch, NOTMUCH_CONFIG_SYNC_MAILDIR_FLAGS,
|
|
&synchronize_flags)))
|
|
return EXIT_FAILURE;
|
|
|
|
tag_ops = tag_op_list_create (local);
|
|
if (tag_ops == NULL) {
|
|
fprintf (stderr, "Out of memory.\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
for (;
|
|
notmuch_config_values_valid (new_tags);
|
|
notmuch_config_values_move_to_next (new_tags)) {
|
|
const char *error_msg;
|
|
const char *tag = notmuch_config_values_get (new_tags);
|
|
error_msg = illegal_tag (tag, false);
|
|
if (error_msg) {
|
|
fprintf (stderr, "Error: tag '%s' in new.tags: %s\n",
|
|
tag, error_msg);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (tag_op_list_append (tag_ops, tag, false))
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (parse_tag_command_line (local, argc - opt_index, argv + opt_index,
|
|
&query_string, tag_ops))
|
|
return EXIT_FAILURE;
|
|
|
|
if (*query_string != '\0') {
|
|
fprintf (stderr, "Error: unexpected query string: %s\n", query_string);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (! is_valid_folder_name (folder)) {
|
|
fprintf (stderr, "Error: invalid folder name: '%s'\n", folder);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
maildir = talloc_asprintf (local, "%s/%s", mail_root, folder);
|
|
if (! maildir) {
|
|
fprintf (stderr, "Out of memory\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
strip_trailing (maildir, '/');
|
|
if (create_folder && ! maildir_create_folder (local, maildir, world_readable))
|
|
return EXIT_FAILURE;
|
|
|
|
/* Set up our handler for SIGINT. We do not set SA_RESTART so that copying
|
|
* from standard input may be interrupted. */
|
|
memset (&action, 0, sizeof (struct sigaction));
|
|
action.sa_handler = handle_sigint;
|
|
sigemptyset (&action.sa_mask);
|
|
action.sa_flags = 0;
|
|
sigaction (SIGINT, &action, NULL);
|
|
|
|
/* Write the message to the Maildir new directory. */
|
|
newpath = maildir_write_new (local, STDIN_FILENO, maildir, world_readable);
|
|
if (! newpath) {
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
status = notmuch_process_shared_indexing_options (indexopts);
|
|
if (status != NOTMUCH_STATUS_SUCCESS) {
|
|
fprintf (stderr, "Error: Failed to process index options. (%s)\n",
|
|
notmuch_status_to_string (status));
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
/* Index the message. */
|
|
status = add_file (notmuch, newpath, tag_ops, synchronize_flags, keep, indexopts);
|
|
|
|
/* Commit changes. */
|
|
close_status = notmuch_database_close (notmuch);
|
|
if (close_status) {
|
|
/* Hold on to the first error, if any. */
|
|
if (! status)
|
|
status = close_status;
|
|
fprintf (stderr, "%s: failed to commit database changes: %s\n",
|
|
keep ? "Warning" : "Error",
|
|
notmuch_status_to_string (close_status));
|
|
}
|
|
|
|
if (status) {
|
|
if (keep) {
|
|
status = NOTMUCH_STATUS_SUCCESS;
|
|
} else {
|
|
/* If maildir flag sync failed, this might fail. */
|
|
if (unlink (newpath)) {
|
|
fprintf (stderr, "Warning: failed to remove '%s' from maildir "
|
|
"after errors: %s. Please run 'notmuch new' to fix.\n",
|
|
newpath, strerror (errno));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (hooks && status == NOTMUCH_STATUS_SUCCESS) {
|
|
/* Ignore hook failures. */
|
|
notmuch_run_hook (notmuch, "post-insert");
|
|
}
|
|
|
|
notmuch_database_destroy (notmuch);
|
|
|
|
talloc_free (local);
|
|
|
|
return status_to_exit (status);
|
|
}
|