* 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/ .
+ * along with this program. If not, see https://www.gnu.org/licenses/ .
*
* Author: Carl Worth <cworth@cworth.org>
*/
#include <glib.h> /* GHashTable */
struct _notmuch_message_file {
- /* File object */
- FILE *file;
+ /* open stream to (possibly gzipped) file */
+ GMimeStream *stream;
char *filename;
/* Cache for decoded headers */
GMimeMessage *message;
};
-static int
-strcase_equal (const void *a, const void *b)
-{
- return strcasecmp (a, b) == 0;
-}
-
-static unsigned int
-strcase_hash (const void *ptr)
-{
- const char *s = ptr;
-
- /* This is the djb2 hash. */
- unsigned int hash = 5381;
- while (s && *s) {
- hash = ((hash << 5) + hash) + tolower (*s);
- s++;
- }
-
- return hash;
-}
-
static int
_notmuch_message_file_destructor (notmuch_message_file_t *message)
{
if (message->message)
g_object_unref (message->message);
- if (message->file)
- fclose (message->file);
+ if (message->stream)
+ g_object_unref (message->stream);
return 0;
}
/* Create a new notmuch_message_file_t for 'filename' with 'ctx' as
* the talloc owner. */
notmuch_message_file_t *
-_notmuch_message_file_open_ctx (void *ctx, const char *filename)
+_notmuch_message_file_open_ctx (notmuch_database_t *notmuch,
+ void *ctx, const char *filename)
{
notmuch_message_file_t *message;
if (unlikely (message == NULL))
return NULL;
- /* Only needed for error messages during parsing. */
- message->filename = talloc_strdup (message, filename);
+ const char *prefix = notmuch_config_get (notmuch, NOTMUCH_CONFIG_MAIL_ROOT);
+
+ if (prefix == NULL)
+ goto FAIL;
+
+ if (*filename == '/') {
+ if (strncmp (filename, prefix, strlen (prefix)) != 0) {
+ _notmuch_database_log (notmuch, "Error opening %s: path outside mail root\n",
+ filename);
+ errno = 0;
+ goto FAIL;
+ }
+ message->filename = talloc_strdup (message, filename);
+ } else {
+ message->filename = talloc_asprintf (message, "%s/%s", prefix, filename);
+ }
+
if (message->filename == NULL)
goto FAIL;
talloc_set_destructor (message, _notmuch_message_file_destructor);
- message->file = fopen (filename, "r");
- if (message->file == NULL)
+ message->stream = g_mime_stream_gzfile_open (message->filename);
+ if (message->stream == NULL)
goto FAIL;
return message;
FAIL:
- fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno));
- notmuch_message_file_close (message);
+ if (errno)
+ _notmuch_database_log (notmuch, "Error opening %s: %s\n",
+ filename, strerror (errno));
+ _notmuch_message_file_close (message);
return NULL;
}
notmuch_message_file_t *
-notmuch_message_file_open (const char *filename)
+_notmuch_message_file_open (notmuch_database_t *notmuch,
+ const char *filename)
+{
+ return _notmuch_message_file_open_ctx (notmuch, NULL, filename);
+}
+
+const char *
+_notmuch_message_file_get_filename (notmuch_message_file_t *message_file)
{
- return _notmuch_message_file_open_ctx (NULL, filename);
+ return message_file->filename;
}
void
-notmuch_message_file_close (notmuch_message_file_t *message)
+_notmuch_message_file_close (notmuch_message_file_t *message)
{
talloc_free (message);
}
-static notmuch_bool_t
-_is_mbox (FILE *file)
+static bool
+_is_mbox (GMimeStream *stream)
{
char from_buf[5];
- notmuch_bool_t ret = FALSE;
+ bool ret = false;
/* Is this mbox? */
- if (fread (from_buf, sizeof (from_buf), 1, file) == 1 &&
+ if (g_mime_stream_read (stream, from_buf, sizeof (from_buf)) == sizeof (from_buf) &&
strncmp (from_buf, "From ", 5) == 0)
- ret = TRUE;
+ ret = true;
- rewind (file);
+ g_mime_stream_reset (stream);
return ret;
}
notmuch_status_t
_notmuch_message_file_parse (notmuch_message_file_t *message)
{
- GMimeStream *stream;
GMimeParser *parser;
notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
- static int initialized = 0;
- notmuch_bool_t is_mbox;
+ bool is_mbox;
if (message->message)
return NOTMUCH_STATUS_SUCCESS;
- is_mbox = _is_mbox (message->file);
+ is_mbox = _is_mbox (message->stream);
- if (! initialized) {
- g_mime_init (GMIME_ENABLE_RFC2047_WORKAROUNDS);
- initialized = 1;
- }
+ _notmuch_init ();
message->headers = g_hash_table_new_full (strcase_hash, strcase_equal,
free, g_free);
if (! message->headers)
return NOTMUCH_STATUS_OUT_OF_MEMORY;
- stream = g_mime_stream_file_new (message->file);
-
- /* We'll own and fclose the FILE* ourselves. */
- g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream), FALSE);
-
- parser = g_mime_parser_new_with_stream (stream);
+ parser = g_mime_parser_new_with_stream (message->stream);
g_mime_parser_set_scan_from (parser, is_mbox);
- message->message = g_mime_parser_construct_message (parser);
+ message->message = g_mime_parser_construct_message (parser, NULL);
if (! message->message) {
status = NOTMUCH_STATUS_FILE_NOT_EMAIL;
goto DONE;
}
- if (is_mbox) {
- if (! g_mime_parser_eos (parser)) {
- /* This is a multi-message mbox. */
- status = NOTMUCH_STATUS_FILE_NOT_EMAIL;
- goto DONE;
- }
+ if (is_mbox && ! g_mime_parser_eos (parser)) {
/*
- * For historical reasons, we support single-message mboxes,
- * but this behavior is likely to change in the future, so
- * warn.
+ * This is a multi-message mbox. (For historical reasons, we
+ * do support single-message mboxes.)
*/
- static notmuch_bool_t mbox_warning = FALSE;
- if (! mbox_warning) {
- mbox_warning = TRUE;
- fprintf (stderr, "\
-Warning: %s is an mbox containing a single message,\n\
-likely caused by misconfigured mail delivery. Support for single-message\n\
-mboxes is deprecated and may be removed in the future.\n", message->filename);
- }
+ status = NOTMUCH_STATUS_FILE_NOT_EMAIL;
}
DONE:
- g_object_unref (stream);
+ g_mime_stream_reset (message->stream);
g_object_unref (parser);
if (status) {
message->message = NULL;
}
- rewind (message->file);
}
return status;
*
* Return NULL on errors, empty string for non-existing headers.
*/
+
+static char *
+_extend_header (char *combined, const char *value)
+{
+ char *decoded;
+
+ decoded = g_mime_utils_header_decode_text (NULL, value);
+ if (! decoded) {
+ if (combined) {
+ g_free (combined);
+ combined = NULL;
+ }
+ goto DONE;
+ }
+
+ if (combined) {
+ char *tmp = g_strdup_printf ("%s %s", combined, decoded);
+ g_free (decoded);
+ g_free (combined);
+ if (! tmp) {
+ combined = NULL;
+ goto DONE;
+ }
+
+ combined = tmp;
+ } else {
+ combined = decoded;
+ }
+ DONE:
+ return combined;
+}
+
static char *
_notmuch_message_file_get_combined_header (notmuch_message_file_t *message,
const char *header)
{
- GMimeHeaderList *headers;
- GMimeHeaderIter *iter;
char *combined = NULL;
+ GMimeHeaderList *headers;
headers = g_mime_object_get_header_list (GMIME_OBJECT (message->message));
if (! headers)
return NULL;
- iter = g_mime_header_iter_new ();
- if (! iter)
- return NULL;
-
- if (! g_mime_header_list_get_iter (headers, iter))
- goto DONE;
- do {
+ for (int i = 0; i < g_mime_header_list_get_count (headers); i++) {
const char *value;
- char *decoded;
+ GMimeHeader *g_header = g_mime_header_list_get_header_at (headers, i);
- if (strcasecmp (g_mime_header_iter_get_name (iter), header) != 0)
+ if (strcasecmp (g_mime_header_get_name (g_header), header) != 0)
continue;
- /* Note that GMime retains ownership of value... */
- value = g_mime_header_iter_get_value (iter);
-
- /* ... while decoded needs to be freed with g_free(). */
- decoded = g_mime_utils_header_decode_text (value);
- if (! decoded) {
- if (combined) {
- g_free (combined);
- combined = NULL;
- }
- goto DONE;
- }
+ /* GMime retains ownership of value, we hope */
+ value = g_mime_header_get_value (g_header);
- if (combined) {
- char *tmp = g_strdup_printf ("%s %s", combined, decoded);
- g_free (decoded);
- g_free (combined);
- if (! tmp) {
- combined = NULL;
- goto DONE;
- }
-
- combined = tmp;
- } else {
- combined = decoded;
- }
- } while (g_mime_header_iter_next (iter));
+ combined = _extend_header (combined, value);
+ }
/* Return empty string for non-existing headers. */
if (! combined)
combined = g_strdup ("");
- DONE:
- g_mime_header_iter_free (iter);
-
return combined;
}
const char *
-notmuch_message_file_get_header (notmuch_message_file_t *message,
- const char *header)
+_notmuch_message_file_get_header (notmuch_message_file_t *message,
+ const char *header)
{
const char *value;
char *decoded;
if (value)
return value;
- if (strcasecmp (header, "received") == 0) {
+ if (strcasecmp (header, "received") == 0 ||
+ strcasecmp (header, "delivered-to") == 0) {
/*
- * The Received: header is special. We concatenate all
- * instances of the header as we use this when analyzing the
- * path the mail has taken from sender to recipient.
+ * The Received: header is special. We concatenate all instances of the
+ * header as we use this when analyzing the path the mail has taken
+ * from sender to recipient.
+ *
+ * Similarly, multiple instances of Delivered-To may be present. We
+ * concatenate them so the one with highest priority may be picked (eg.
+ * primary_email before other_email).
*/
decoded = _notmuch_message_file_get_combined_header (message, header);
} else {
value = g_mime_object_get_header (GMIME_OBJECT (message->message),
header);
if (value)
- decoded = g_mime_utils_header_decode_text (value);
+ decoded = g_mime_utils_header_decode_text (NULL, value);
else
decoded = g_strdup ("");
}
return decoded;
}
+
+notmuch_status_t
+_notmuch_message_file_get_headers (notmuch_message_file_t *message_file,
+ const char **from_out,
+ const char **subject_out,
+ const char **to_out,
+ const char **date_out,
+ char **message_id_out)
+{
+ notmuch_status_t ret;
+ const char *header;
+ const char *from, *to, *subject, *date;
+ char *message_id = NULL;
+
+ /* Parse message up front to get better error status. */
+ ret = _notmuch_message_file_parse (message_file);
+ if (ret)
+ goto DONE;
+
+ /* Before we do any real work, (especially before doing a
+ * potential SHA-1 computation on the entire file's contents),
+ * let's make sure that what we're looking at looks like an
+ * actual email message.
+ */
+ from = _notmuch_message_file_get_header (message_file, "from");
+ subject = _notmuch_message_file_get_header (message_file, "subject");
+ to = _notmuch_message_file_get_header (message_file, "to");
+ date = _notmuch_message_file_get_header (message_file, "date");
+
+ if ((from == NULL || *from == '\0') &&
+ (subject == NULL || *subject == '\0') &&
+ (to == NULL || *to == '\0')) {
+ ret = NOTMUCH_STATUS_FILE_NOT_EMAIL;
+ goto DONE;
+ }
+
+ /* Now that we're sure it's mail, the first order of business
+ * is to find a message ID (or else create one ourselves).
+ */
+ header = _notmuch_message_file_get_header (message_file, "message-id");
+ if (header && *header != '\0') {
+ message_id = _notmuch_message_id_parse (message_file, header, NULL);
+
+ /* So the header value isn't RFC-compliant, but it's
+ * better than no message-id at all.
+ */
+ if (message_id == NULL)
+ message_id = talloc_strdup (message_file, header);
+ }
+
+ if (message_id == NULL ) {
+ /* No message-id at all, let's generate one by taking a
+ * hash over the file's contents.
+ */
+ char *sha1 = _notmuch_sha1_of_file (_notmuch_message_file_get_filename (message_file));
+
+ /* If that failed too, something is really wrong. Give up. */
+ if (sha1 == NULL) {
+ ret = NOTMUCH_STATUS_FILE_ERROR;
+ goto DONE;
+ }
+
+ message_id = talloc_asprintf (message_file, "notmuch-sha1-%s", sha1);
+ free (sha1);
+ }
+ DONE:
+ if (ret == NOTMUCH_STATUS_SUCCESS) {
+ if (from_out)
+ *from_out = from;
+ if (subject_out)
+ *subject_out = subject;
+ if (to_out)
+ *to_out = to;
+ if (date_out)
+ *date_out = date;
+ if (message_id_out)
+ *message_id_out = message_id;
+ }
+ return ret;
+}
projects / notmuch / blobdiff