1 /* notmuch-private.h - Internal interfaces for notmuch.
3 * Copyright © 2009 Carl Worth
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see https://www.gnu.org/licenses/ .
18 * Author: Carl Worth <cworth@cworth.org>
21 #ifndef NOTMUCH_PRIVATE_H
22 #define NOTMUCH_PRIVATE_H
25 #define _GNU_SOURCE /* For getline and asprintf */
38 #include <sys/types.h>
50 #include "gmime-extra.h"
53 #include "error_util.h"
54 #include "string-util.h"
57 # define DEBUG_DATABASE_SANITY 1
58 # define DEBUG_QUERY 1
61 #define COMPILE_TIME_ASSERT(pred) ((void)sizeof(char[1 - 2*!(pred)]))
63 #define STRNCMP_LITERAL(var, literal) \
64 strncmp ((var), (literal), sizeof (literal) - 1)
66 /* Robust bit test/set/reset macros */
67 #define _NOTMUCH_VALID_BIT(bit) \
68 ((bit) >= 0 && ((unsigned long) bit) < CHAR_BIT * sizeof (unsigned long long))
69 #define NOTMUCH_TEST_BIT(val, bit) \
70 (_NOTMUCH_VALID_BIT(bit) ? !!((val) & (1ull << (bit))) : 0)
71 #define NOTMUCH_SET_BIT(valp, bit) \
72 (_NOTMUCH_VALID_BIT(bit) ? (*(valp) |= (1ull << (bit))) : *(valp))
73 #define NOTMUCH_CLEAR_BIT(valp, bit) \
74 (_NOTMUCH_VALID_BIT(bit) ? (*(valp) &= ~(1ull << (bit))) : *(valp))
76 #define unused(x) x __attribute__ ((unused))
78 /* Thanks to Andrew Tridgell's (SAMBA's) talloc for this definition of
79 * unlikely. The talloc source code comes to us via the GNU LGPL v. 3.
81 /* these macros gain us a few percent of speed on gcc */
83 /* the strange !! is to ensure that __builtin_expect() takes either 0 or 1
84 as its first argument */
86 #define likely(x) __builtin_expect(!!(x), 1)
89 #define unlikely(x) __builtin_expect(!!(x), 0)
96 #define unlikely(x) (x)
101 NOTMUCH_VALUE_TIMESTAMP = 0,
102 NOTMUCH_VALUE_MESSAGE_ID,
104 NOTMUCH_VALUE_SUBJECT,
105 NOTMUCH_VALUE_LAST_MOD,
108 /* Xapian (with flint backend) complains if we provide a term longer
109 * than this, but I haven't yet found a way to query the limit
110 * programmatically. */
111 #define NOTMUCH_TERM_MAX 245
113 #define NOTMUCH_METADATA_THREAD_ID_PREFIX "thread_id_"
115 /* For message IDs we have to be even more restrictive. Beyond fitting
116 * into the term limit, we also use message IDs to construct
117 * metadata-key values. And the documentation says that these should
118 * be restricted to about 200 characters. (The actual limit for the
119 * chert backend at least is 252.)
121 #define NOTMUCH_MESSAGE_ID_MAX (200 - sizeof (NOTMUCH_METADATA_THREAD_ID_PREFIX))
123 typedef enum _notmuch_private_status {
124 /* First, copy all the public status values. */
125 NOTMUCH_PRIVATE_STATUS_SUCCESS = NOTMUCH_STATUS_SUCCESS,
126 NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY = NOTMUCH_STATUS_OUT_OF_MEMORY,
127 NOTMUCH_PRIVATE_STATUS_READ_ONLY_DATABASE = NOTMUCH_STATUS_READ_ONLY_DATABASE,
128 NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION = NOTMUCH_STATUS_XAPIAN_EXCEPTION,
129 NOTMUCH_PRIVATE_STATUS_FILE_NOT_EMAIL = NOTMUCH_STATUS_FILE_NOT_EMAIL,
130 NOTMUCH_PRIVATE_STATUS_NULL_POINTER = NOTMUCH_STATUS_NULL_POINTER,
131 NOTMUCH_PRIVATE_STATUS_TAG_TOO_LONG = NOTMUCH_STATUS_TAG_TOO_LONG,
132 NOTMUCH_PRIVATE_STATUS_UNBALANCED_FREEZE_THAW = NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW,
134 /* Then add our own private values. */
135 NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG = NOTMUCH_STATUS_LAST_STATUS,
136 NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND,
138 NOTMUCH_PRIVATE_STATUS_LAST_STATUS
139 } notmuch_private_status_t;
141 /* Coerce a notmuch_private_status_t value to a notmuch_status_t
142 * value, generating an internal error if the private value is equal
143 * to or greater than NOTMUCH_STATUS_LAST_STATUS. (The idea here is
144 * that the caller has previously handled any expected
145 * notmuch_private_status_t values.)
147 * Note that the function _internal_error does not return. Evaluating
148 * to NOTMUCH_STATUS_SUCCESS is done purely to appease the compiler.
150 #define COERCE_STATUS(private_status, format, ...) \
151 ((private_status >= (notmuch_private_status_t) NOTMUCH_STATUS_LAST_STATUS)\
153 _internal_error (format " (%s).\n", \
156 (notmuch_status_t) NOTMUCH_PRIVATE_STATUS_SUCCESS \
158 (notmuch_status_t) private_status)
160 /* Flags shared by various lookup functions. */
161 typedef enum _notmuch_find_flags {
162 /* Lookup without creating any documents. This is the default
164 NOTMUCH_FIND_LOOKUP = 0,
165 /* If set, create the necessary document (or documents) if they
166 * are missing. Requires a read/write database. */
167 NOTMUCH_FIND_CREATE = 1<<0,
168 } notmuch_find_flags_t;
170 typedef struct _notmuch_doc_id_set notmuch_doc_id_set_t;
174 /* Lookup a prefix value by name.
176 * XXX: This should really be static inside of message.cc, and we can
177 * do that once we convert database.cc to use the
178 * _notmuch_message_add/remove_term functions. */
180 _find_prefix (const char *name);
183 _notmuch_message_id_compressed (void *ctx, const char *message_id);
186 _notmuch_database_ensure_writable (notmuch_database_t *notmuch);
189 _notmuch_database_reopen (notmuch_database_t *notmuch);
192 _notmuch_database_log (notmuch_database_t *notmuch,
193 const char *format, ...);
196 _notmuch_database_log_append (notmuch_database_t *notmuch,
197 const char *format, ...);
200 _notmuch_database_new_revision (notmuch_database_t *notmuch);
203 _notmuch_database_relative_path (notmuch_database_t *notmuch,
207 _notmuch_database_split_path (void *ctx,
209 const char **directory,
210 const char **basename);
213 _notmuch_database_get_directory_db_path (const char *path);
216 _notmuch_database_generate_doc_id (notmuch_database_t *notmuch);
218 notmuch_private_status_t
219 _notmuch_database_find_unique_doc_id (notmuch_database_t *notmuch,
220 const char *prefix_name,
222 unsigned int *doc_id);
225 _notmuch_database_find_directory_id (notmuch_database_t *database,
227 notmuch_find_flags_t flags,
228 unsigned int *directory_id);
231 _notmuch_database_get_directory_path (void *ctx,
232 notmuch_database_t *notmuch,
233 unsigned int doc_id);
236 _notmuch_database_filename_to_direntry (void *ctx,
237 notmuch_database_t *notmuch,
238 const char *filename,
239 notmuch_find_flags_t flags,
244 notmuch_directory_t *
245 _notmuch_directory_create (notmuch_database_t *notmuch,
247 notmuch_find_flags_t flags,
248 notmuch_status_t *status_ret);
251 _notmuch_directory_get_document_id (notmuch_directory_t *directory);
256 _notmuch_message_create (const void *talloc_owner,
257 notmuch_database_t *notmuch,
259 notmuch_private_status_t *status);
262 _notmuch_message_create_for_message_id (notmuch_database_t *notmuch,
263 const char *message_id,
264 notmuch_private_status_t *status);
267 _notmuch_message_get_doc_id (notmuch_message_t *message);
270 _notmuch_message_get_in_reply_to (notmuch_message_t *message);
272 notmuch_private_status_t
273 _notmuch_message_add_term (notmuch_message_t *message,
274 const char *prefix_name,
277 notmuch_private_status_t
278 _notmuch_message_remove_term (notmuch_message_t *message,
279 const char *prefix_name,
282 notmuch_private_status_t
283 _notmuch_message_has_term (notmuch_message_t *message,
284 const char *prefix_name,
288 notmuch_private_status_t
289 _notmuch_message_gen_terms (notmuch_message_t *message,
290 const char *prefix_name,
294 _notmuch_message_upgrade_filename_storage (notmuch_message_t *message);
297 _notmuch_message_upgrade_folder (notmuch_message_t *message);
300 _notmuch_message_add_filename (notmuch_message_t *message,
301 const char *filename);
304 _notmuch_message_remove_filename (notmuch_message_t *message,
305 const char *filename);
308 _notmuch_message_rename (notmuch_message_t *message,
309 const char *new_filename);
312 _notmuch_message_ensure_thread_id (notmuch_message_t *message);
315 _notmuch_message_set_header_values (notmuch_message_t *message,
318 const char *subject);
321 _notmuch_message_upgrade_last_mod (notmuch_message_t *message);
324 _notmuch_message_sync (notmuch_message_t *message);
327 _notmuch_message_delete (notmuch_message_t *message);
329 notmuch_private_status_t
330 _notmuch_message_initialize_ghost (notmuch_message_t *message,
331 const char *thread_id);
334 _notmuch_message_close (notmuch_message_t *message);
336 /* Get a copy of the data in this message document.
338 * Caller should talloc_free the result when done.
340 * This function is intended to support database upgrade and really
341 * shouldn't be used otherwise. */
343 _notmuch_message_talloc_copy_data (notmuch_message_t *message);
345 /* Clear the data in this message document.
347 * This function is intended to support database upgrade and really
348 * shouldn't be used otherwise. */
350 _notmuch_message_clear_data (notmuch_message_t *message);
352 /* Set the author member of 'message' - this is the representation used
353 * when displaying the message */
355 _notmuch_message_set_author (notmuch_message_t *message, const char *author);
357 /* Get the author member of 'message' */
359 _notmuch_message_get_author (notmuch_message_t *message);
363 /* XXX: I haven't decided yet whether these will actually get exported
364 * into the public interface in notmuch.h
367 typedef struct _notmuch_message_file notmuch_message_file_t;
369 /* Open a file containing a single email message.
371 * The caller should call notmuch_message_close when done with this.
373 * Returns NULL if any error occurs.
375 notmuch_message_file_t *
376 _notmuch_message_file_open (notmuch_database_t *notmuch, const char *filename);
378 /* Like notmuch_message_file_open but with 'ctx' as the talloc owner. */
379 notmuch_message_file_t *
380 _notmuch_message_file_open_ctx (notmuch_database_t *notmuch,
381 void *ctx, const char *filename);
383 /* Close a notmuch message previously opened with notmuch_message_open. */
385 _notmuch_message_file_close (notmuch_message_file_t *message);
387 /* Parse the message.
389 * This will be done automatically as necessary on other calls
390 * depending on it, but an explicit call allows for better error
394 _notmuch_message_file_parse (notmuch_message_file_t *message);
396 /* Get the gmime message of a message file.
398 * The message file is parsed as necessary.
400 * The GMimeMessage* is set to *mime_message on success (which the
401 * caller must not unref).
403 * XXX: Would be nice to not have to expose GMimeMessage here.
406 _notmuch_message_file_get_mime_message (notmuch_message_file_t *message,
407 GMimeMessage **mime_message);
409 /* Get the value of the specified header from the message as a UTF-8 string.
411 * The message file is parsed as necessary.
413 * The header name is case insensitive.
415 * The Received: header is special - for it all Received: headers in
416 * the message are concatenated
418 * The returned value is owned by the notmuch message and is valid
419 * only until the message is closed. The caller should copy it if
420 * needing to modify the value or to hold onto it for longer.
422 * Returns NULL on errors, empty string if the message does not
423 * contain a header line matching 'header'.
426 _notmuch_message_file_get_header (notmuch_message_file_t *message,
430 _notmuch_message_file_get_headers (notmuch_message_file_t *message_file,
431 const char **from_out,
432 const char **subject_out,
434 const char **date_out,
435 char **message_id_out);
438 _notmuch_message_file_get_filename (notmuch_message_file_t *message);
442 _notmuch_database_link_message_to_parents (notmuch_database_t *notmuch,
443 notmuch_message_t *message,
444 notmuch_message_file_t *message_file,
445 const char **thread_id);
449 _notmuch_message_index_file (notmuch_message_t *message,
450 notmuch_message_file_t *message_file);
454 typedef struct _notmuch_message_node {
455 notmuch_message_t *message;
456 struct _notmuch_message_node *next;
457 } notmuch_message_node_t;
459 typedef struct _notmuch_message_list {
460 notmuch_message_node_t *head;
461 notmuch_message_node_t **tail;
462 } notmuch_message_list_t;
464 /* There's a rumor that there's an alternate struct _notmuch_messages
465 * somewhere with some nasty C++ objects in it. We'll try to maintain
466 * ignorance of that here. (See notmuch_mset_messages_t in query.cc)
468 struct _notmuch_messages {
469 bool is_of_list_type;
470 notmuch_doc_id_set_t *excluded_doc_ids;
471 notmuch_message_node_t *iterator;
474 notmuch_message_list_t *
475 _notmuch_message_list_create (const void *ctx);
478 _notmuch_message_list_add_message (notmuch_message_list_t *list,
479 notmuch_message_t *message);
482 _notmuch_messages_create (notmuch_message_list_t *list);
487 _notmuch_mset_messages_valid (notmuch_messages_t *messages);
490 _notmuch_mset_messages_get (notmuch_messages_t *messages);
493 _notmuch_mset_messages_move_to_next (notmuch_messages_t *messages);
496 _notmuch_doc_id_set_contains (notmuch_doc_id_set_t *doc_ids,
497 unsigned int doc_id);
500 _notmuch_doc_id_set_remove (notmuch_doc_id_set_t *doc_ids,
501 unsigned int doc_id);
503 /* querying xapian documents by type (e.g. "mail" or "ghost"): */
505 _notmuch_query_search_documents (notmuch_query_t *query,
507 notmuch_messages_t **out);
510 _notmuch_query_count_documents (notmuch_query_t *query,
512 unsigned *count_out);
515 /* Parse an RFC 822 message-id, discarding whitespace, any RFC 822
516 * comments, and the '<' and '>' delimiters.
518 * If not NULL, then *next will be made to point to the first character
519 * not parsed, (possibly pointing to the final '\0' terminator.
521 * Returns a newly talloc'ed string belonging to 'ctx'.
523 * Returns NULL if there is any error parsing the message-id. */
525 _notmuch_message_id_parse (void *ctx, const char *message_id, const char **next);
531 _notmuch_message_add_reply (notmuch_message_t *message,
532 notmuch_message_t *reply);
534 _notmuch_message_database (notmuch_message_t *message);
537 _notmuch_message_remove_unprefixed_terms (notmuch_message_t *message);
541 _notmuch_sha1_of_string (const char *str);
544 _notmuch_sha1_of_file (const char *filename);
548 typedef struct _notmuch_string_node {
550 struct _notmuch_string_node *next;
551 } notmuch_string_node_t;
553 typedef struct _notmuch_string_list {
555 notmuch_string_node_t *head;
556 notmuch_string_node_t **tail;
557 } notmuch_string_list_t;
559 notmuch_string_list_t *
560 _notmuch_string_list_create (const void *ctx);
563 * return the number of strings in 'list'
566 _notmuch_string_list_length (notmuch_string_list_t *list);
568 /* Add 'string' to 'list'.
570 * The list will create its own talloced copy of 'string'.
573 _notmuch_string_list_append (notmuch_string_list_t *list,
577 _notmuch_string_list_sort (notmuch_string_list_t *list);
580 typedef struct _notmuch_string_map notmuch_string_map_t;
581 typedef struct _notmuch_string_map_iterator notmuch_string_map_iterator_t;
582 notmuch_string_map_t *
583 _notmuch_string_map_create (const void *ctx);
586 _notmuch_string_map_append (notmuch_string_map_t *map,
591 _notmuch_string_map_get (notmuch_string_map_t *map, const char *key);
593 notmuch_string_map_iterator_t *
594 _notmuch_string_map_iterator_create (notmuch_string_map_t *map, const char *key,
598 _notmuch_string_map_iterator_valid (notmuch_string_map_iterator_t *iter);
601 _notmuch_string_map_iterator_move_to_next (notmuch_string_map_iterator_t *iter);
604 _notmuch_string_map_iterator_key (notmuch_string_map_iterator_t *iterator);
607 _notmuch_string_map_iterator_value (notmuch_string_map_iterator_t *iterator);
610 _notmuch_string_map_iterator_destroy (notmuch_string_map_iterator_t *iterator);
615 _notmuch_tags_create (const void *ctx, notmuch_string_list_t *list);
619 /* The notmuch_filenames_t iterates over a notmuch_string_list_t of
621 notmuch_filenames_t *
622 _notmuch_filenames_create (const void *ctx,
623 notmuch_string_list_t *list);
628 _notmuch_thread_create (void *ctx,
629 notmuch_database_t *notmuch,
630 unsigned int seed_doc_id,
631 notmuch_doc_id_set_t *match_set,
632 notmuch_string_list_t *excluded_terms,
633 notmuch_exclude_t omit_exclude,
634 notmuch_sort_t sort);
639 /* Implicit typecast from 'void *' to 'T *' is okay in C, but not in
640 * C++. In talloc_steal, an explicit cast is provided for type safety
641 * in some GCC versions. Otherwise, a cast is required. Provide a
642 * template function for this to maintain type safety, and redefine
643 * talloc_steal to use it.
646 template <class T> T *
647 _notmuch_talloc_steal (const void *new_ctx, const T *ptr)
649 return static_cast<T *> (talloc_steal (new_ctx, ptr));
652 #define talloc_steal _notmuch_talloc_steal