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| | /* notmuch-private.h - Internal interfaces for notmuch.
*
* 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 https://www.gnu.org/licenses/ .
*
* Author: Carl Worth <cworth@cworth.org>
*/
#ifndef NOTMUCH_PRIVATE_H
#define NOTMUCH_PRIVATE_H
#ifndef _GNU_SOURCE
#define _GNU_SOURCE /* For getline and asprintf */
#endif
#include <stdbool.h>
#include <stdio.h>
#include "compat.h"
#include "notmuch.h"
NOTMUCH_BEGIN_DECLS
#include <stdlib.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <ctype.h>
#include <assert.h>
#include <talloc.h>
#include "gmime-extra.h"
#include "xutil.h"
#include "error_util.h"
#include "string-util.h"
#include "crypto.h"
#include "repair.h"
#ifdef DEBUG
# define DEBUG_DATABASE_SANITY 1
# define DEBUG_THREADING 1
# define DEBUG_QUERY 1
#endif
#define COMPILE_TIME_ASSERT(pred) ((void) sizeof (char[1 - 2 * ! (pred)]))
#define STRNCMP_LITERAL(var, literal) \
strncmp ((var), (literal), sizeof (literal) - 1)
/* Robust bit test/set/reset macros */
#define _NOTMUCH_VALID_BIT(bit) \
((bit) >= 0 && ((unsigned long) bit) < CHAR_BIT * sizeof (unsigned long long))
#define NOTMUCH_TEST_BIT(val, bit) \
(_NOTMUCH_VALID_BIT (bit) ? ! ! ((val) & (1ull << (bit))) : 0)
#define NOTMUCH_SET_BIT(valp, bit) \
(_NOTMUCH_VALID_BIT (bit) ? (*(valp) |= (1ull << (bit))) : *(valp))
#define NOTMUCH_CLEAR_BIT(valp, bit) \
(_NOTMUCH_VALID_BIT (bit) ? (*(valp) &= ~(1ull << (bit))) : *(valp))
#define unused(x) x ## _unused __attribute__ ((unused))
/* Thanks to Andrew Tridgell's (SAMBA's) talloc for this definition of
* unlikely. The talloc source code comes to us via the GNU LGPL v. 3.
*/
/* these macros gain us a few percent of speed on gcc */
#if (__GNUC__ >= 3)
/* the strange !! is to ensure that __builtin_expect() takes either 0 or 1
* as its first argument */
#ifndef likely
#define likely(x) __builtin_expect (! ! (x), 1)
#endif
#ifndef unlikely
#define unlikely(x) __builtin_expect (! ! (x), 0)
#endif
#else
#ifndef likely
#define likely(x) (x)
#endif
#ifndef unlikely
#define unlikely(x) (x)
#endif
#endif
typedef enum {
NOTMUCH_VALUE_TIMESTAMP = 0,
NOTMUCH_VALUE_MESSAGE_ID,
NOTMUCH_VALUE_FROM,
NOTMUCH_VALUE_SUBJECT,
NOTMUCH_VALUE_LAST_MOD,
} notmuch_value_t;
/* Xapian (with flint backend) complains if we provide a term longer
* than this, but I haven't yet found a way to query the limit
* programmatically. */
#define NOTMUCH_TERM_MAX 245
#define NOTMUCH_METADATA_THREAD_ID_PREFIX "thread_id_"
/* For message IDs we have to be even more restrictive. Beyond fitting
* into the term limit, we also use message IDs to construct
* metadata-key values. And the documentation says that these should
* be restricted to about 200 characters. (The actual limit for the
* chert backend at least is 252.)
*/
#define NOTMUCH_MESSAGE_ID_MAX (200 - sizeof (NOTMUCH_METADATA_THREAD_ID_PREFIX))
typedef enum _notmuch_private_status {
/* First, copy all the public status values. */
NOTMUCH_PRIVATE_STATUS_SUCCESS = NOTMUCH_STATUS_SUCCESS,
NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY = NOTMUCH_STATUS_OUT_OF_MEMORY,
NOTMUCH_PRIVATE_STATUS_READ_ONLY_DATABASE = NOTMUCH_STATUS_READ_ONLY_DATABASE,
NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION = NOTMUCH_STATUS_XAPIAN_EXCEPTION,
NOTMUCH_PRIVATE_STATUS_FILE_ERROR = NOTMUCH_STATUS_FILE_ERROR,
NOTMUCH_PRIVATE_STATUS_FILE_NOT_EMAIL = NOTMUCH_STATUS_FILE_NOT_EMAIL,
NOTMUCH_PRIVATE_STATUS_NULL_POINTER = NOTMUCH_STATUS_NULL_POINTER,
NOTMUCH_PRIVATE_STATUS_TAG_TOO_LONG = NOTMUCH_STATUS_TAG_TOO_LONG,
NOTMUCH_PRIVATE_STATUS_UNBALANCED_FREEZE_THAW = NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW,
NOTMUCH_PRIVATE_STATUS_UNBALANCED_ATOMIC = NOTMUCH_STATUS_UNBALANCED_ATOMIC,
NOTMUCH_PRIVATE_STATUS_UNSUPPORTED_OPERATION = NOTMUCH_STATUS_UNSUPPORTED_OPERATION,
NOTMUCH_PRIVATE_STATUS_UPGRADE_REQUIRED = NOTMUCH_STATUS_UPGRADE_REQUIRED,
NOTMUCH_PRIVATE_STATUS_PATH_ERROR = NOTMUCH_STATUS_PATH_ERROR,
NOTMUCH_PRIVATE_STATUS_IGNORED = NOTMUCH_STATUS_IGNORED,
NOTMUCH_PRIVATE_STATUS_ILLEGAL_ARGUMENT = NOTMUCH_STATUS_ILLEGAL_ARGUMENT,
NOTMUCH_PRIVATE_STATUS_MALFORMED_CRYPTO_PROTOCOL = NOTMUCH_STATUS_MALFORMED_CRYPTO_PROTOCOL,
NOTMUCH_PRIVATE_STATUS_FAILED_CRYPTO_CONTEXT_CREATION = NOTMUCH_STATUS_FAILED_CRYPTO_CONTEXT_CREATION,
NOTMUCH_PRIVATE_STATUS_UNKNOWN_CRYPTO_PROTOCOL = NOTMUCH_STATUS_UNKNOWN_CRYPTO_PROTOCOL,
NOTMUCH_PRIVATE_STATUS_NO_CONFIG = NOTMUCH_STATUS_NO_CONFIG,
NOTMUCH_PRIVATE_STATUS_DATABASE_EXISTS = NOTMUCH_STATUS_DATABASE_EXISTS,
/* Then add our own private values. */
NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG = NOTMUCH_STATUS_LAST_STATUS,
NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND,
NOTMUCH_PRIVATE_STATUS_BAD_PREFIX,
NOTMUCH_PRIVATE_STATUS_LAST_STATUS
} notmuch_private_status_t;
/* Coerce a notmuch_private_status_t value to a notmuch_status_t
* value, generating an internal error if the private value is equal
* to or greater than NOTMUCH_STATUS_LAST_STATUS. (The idea here is
* that the caller has previously handled any expected
* notmuch_private_status_t values.)
*
* Note that the function _internal_error does not return. Evaluating
* to NOTMUCH_STATUS_SUCCESS is done purely to appease the compiler.
*/
#define COERCE_STATUS(private_status, format, ...) \
((private_status >= (notmuch_private_status_t) NOTMUCH_STATUS_LAST_STATUS) \
? \
_internal_error (format " (%s).\n", \
##__VA_ARGS__, \
__location__), \
(notmuch_status_t) NOTMUCH_PRIVATE_STATUS_SUCCESS \
: \
(notmuch_status_t) private_status)
/* Flags shared by various lookup functions. */
typedef enum _notmuch_find_flags {
/* Lookup without creating any documents. This is the default
* behavior. */
NOTMUCH_FIND_LOOKUP = 0,
/* If set, create the necessary document (or documents) if they
* are missing. Requires a read/write database. */
NOTMUCH_FIND_CREATE = 1 << 0,
} notmuch_find_flags_t;
typedef struct _notmuch_doc_id_set notmuch_doc_id_set_t;
/* database.cc */
/* Lookup a prefix value by name.
*
* XXX: This should really be static inside of message.cc, and we can
* do that once we convert database.cc to use the
* _notmuch_message_add/remove_term functions. */
const char *
_find_prefix (const char *name);
/* Lookup a prefix value by name, including possibly user defined prefixes
*/
const char *
_notmuch_database_prefix (notmuch_database_t *notmuch, const char *name);
char *
_notmuch_message_id_compressed (void *ctx, const char *message_id);
notmuch_status_t
_notmuch_database_ensure_writable (notmuch_database_t *notmuch);
void
_notmuch_database_log (notmuch_database_t *notmuch,
const char *format, ...);
void
_notmuch_database_log_append (notmuch_database_t *notmuch,
const char *format, ...);
unsigned long
_notmuch_database_new_revision (notmuch_database_t *notmuch);
const char *
_notmuch_database_relative_path (notmuch_database_t *notmuch,
const char *path);
notmuch_status_t
_notmuch_database_split_path (void *ctx,
const char *path,
const char **directory,
const char **basename);
const char *
_notmuch_database_get_directory_db_path (const char *path);
unsigned int
_notmuch_database_generate_doc_id (notmuch_database_t *notmuch);
notmuch_private_status_t
_notmuch_database_find_unique_doc_id (notmuch_database_t *notmuch,
const char *prefix_name,
const char *value,
unsigned int *doc_id);
notmuch_status_t
_notmuch_database_find_directory_id (notmuch_database_t *database,
const char *path,
notmuch_find_flags_t flags,
unsigned int *directory_id);
const char *
_notmuch_database_get_directory_path (void *ctx,
notmuch_database_t *notmuch,
unsigned int doc_id);
notmuch_status_t
_notmuch_database_filename_to_direntry (void *ctx,
notmuch_database_t *notmuch,
const char *filename,
notmuch_find_flags_t flags,
char **direntry);
/* directory.cc */
notmuch_directory_t *
_notmuch_directory_find_or_create (notmuch_database_t *notmuch,
const char *path,
notmuch_find_flags_t flags,
notmuch_status_t *status_ret);
unsigned int
_notmuch_directory_get_document_id (notmuch_directory_t *directory);
notmuch_database_mode_t
_notmuch_database_mode (notmuch_database_t *notmuch);
/* message.cc */
notmuch_message_t *
_notmuch_message_create (const void *talloc_owner,
notmuch_database_t *notmuch,
unsigned int doc_id,
notmuch_private_status_t *status);
notmuch_message_t *
_notmuch_message_create_for_message_id (notmuch_database_t *notmuch,
const char *message_id,
notmuch_private_status_t *status);
unsigned int
_notmuch_message_get_doc_id (notmuch_message_t *message);
const char *
_notmuch_message_get_in_reply_to (notmuch_message_t *message);
notmuch_private_status_t
_notmuch_message_add_term (notmuch_message_t *message,
const char *prefix_name,
const char *value);
notmuch_private_status_t
_notmuch_message_remove_term (notmuch_message_t *message,
const char *prefix_name,
const char *value);
notmuch_private_status_t
_notmuch_message_has_term (notmuch_message_t *message,
const char *prefix_name,
const char *value,
bool *result);
notmuch_private_status_t
_notmuch_message_gen_terms (notmuch_message_t *message,
const char *prefix_name,
const char *text);
void
_notmuch_message_upgrade_filename_storage (notmuch_message_t *message);
void
_notmuch_message_upgrade_folder (notmuch_message_t *message);
notmuch_status_t
_notmuch_message_add_filename (notmuch_message_t *message,
const char *filename);
notmuch_status_t
_notmuch_message_remove_filename (notmuch_message_t *message,
const char *filename);
notmuch_status_t
_notmuch_message_rename (notmuch_message_t *message,
const char *new_filename);
void
_notmuch_message_ensure_thread_id (notmuch_message_t *message);
void
_notmuch_message_set_header_values (notmuch_message_t *message,
const char *date,
const char *from,
const char *subject);
void
_notmuch_message_update_subject (notmuch_message_t *message,
const char *subject);
void
_notmuch_message_upgrade_last_mod (notmuch_message_t *message);
void
_notmuch_message_sync (notmuch_message_t *message);
notmuch_status_t
_notmuch_message_delete (notmuch_message_t *message);
notmuch_private_status_t
_notmuch_message_initialize_ghost (notmuch_message_t *message,
const char *thread_id);
void
_notmuch_message_close (notmuch_message_t *message);
/* Get a copy of the data in this message document.
*
* Caller should talloc_free the result when done.
*
* This function is intended to support database upgrade and really
* shouldn't be used otherwise. */
char *
_notmuch_message_talloc_copy_data (notmuch_message_t *message);
/* Clear the data in this message document.
*
* This function is intended to support database upgrade and really
* shouldn't be used otherwise. */
void
_notmuch_message_clear_data (notmuch_message_t *message);
/* Set the author member of 'message' - this is the representation used
* when displaying the message */
void
_notmuch_message_set_author (notmuch_message_t *message, const char *author);
/* Get the author member of 'message' */
const char *
_notmuch_message_get_author (notmuch_message_t *message);
/* message-file.c */
/* XXX: I haven't decided yet whether these will actually get exported
* into the public interface in notmuch.h
*/
typedef struct _notmuch_message_file notmuch_message_file_t;
/* Open a file containing a single email message.
*
* The caller should call notmuch_message_close when done with this.
*
* Returns NULL if any error occurs.
*/
notmuch_message_file_t *
_notmuch_message_file_open (notmuch_database_t *notmuch, const char *filename);
/* Like notmuch_message_file_open but with 'ctx' as the talloc owner. */
notmuch_message_file_t *
_notmuch_message_file_open_ctx (notmuch_database_t *notmuch,
void *ctx, const char *filename);
/* Close a notmuch message previously opened with notmuch_message_open. */
void
_notmuch_message_file_close (notmuch_message_file_t *message);
/* Parse the message.
*
* This will be done automatically as necessary on other calls
* depending on it, but an explicit call allows for better error
* status reporting.
*/
notmuch_status_t
_notmuch_message_file_parse (notmuch_message_file_t *message);
/* Get the gmime message of a message file.
*
* The message file is parsed as necessary.
*
* The GMimeMessage* is set to *mime_message on success (which the
* caller must not unref).
*
* XXX: Would be nice to not have to expose GMimeMessage here.
*/
notmuch_status_t
_notmuch_message_file_get_mime_message (notmuch_message_file_t *message,
GMimeMessage **mime_message);
/* Get the value of the specified header from the message as a UTF-8 string.
*
* The message file is parsed as necessary.
*
* The header name is case insensitive.
*
* The Received: header is special - for it all Received: headers in
* the message are concatenated
*
* The returned value is owned by the notmuch message and is valid
* only until the message is closed. The caller should copy it if
* needing to modify the value or to hold onto it for longer.
*
* Returns NULL on errors, empty string if the message does not
* contain a header line matching 'header'.
*/
const char *
_notmuch_message_file_get_header (notmuch_message_file_t *message,
const char *header);
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);
const char *
_notmuch_message_file_get_filename (notmuch_message_file_t *message);
/* add-message.cc */
notmuch_status_t
_notmuch_database_link_message_to_parents (notmuch_database_t *notmuch,
notmuch_message_t *message,
notmuch_message_file_t *message_file,
const char **thread_id);
/* index.cc */
notmuch_status_t
_notmuch_message_index_file (notmuch_message_t *message,
notmuch_indexopts_t *indexopts,
notmuch_message_file_t *message_file);
/* messages.c */
typedef struct _notmuch_message_node {
notmuch_message_t *message;
struct _notmuch_message_node *next;
} notmuch_message_node_t;
typedef struct _notmuch_message_list {
notmuch_message_node_t *head;
notmuch_message_node_t **tail;
} notmuch_message_list_t;
/* There's a rumor that there's an alternate struct _notmuch_messages
* somewhere with some nasty C++ objects in it. We'll try to maintain
* ignorance of that here. (See notmuch_mset_messages_t in query.cc)
*/
struct _notmuch_messages {
bool is_of_list_type;
notmuch_doc_id_set_t *excluded_doc_ids;
notmuch_message_node_t *iterator;
};
notmuch_message_list_t *
_notmuch_message_list_create (const void *ctx);
bool
_notmuch_message_list_empty (notmuch_message_list_t *list);
void
_notmuch_message_list_add_message (notmuch_message_list_t *list,
notmuch_message_t *message);
notmuch_messages_t *
_notmuch_messages_create (notmuch_message_list_t *list);
bool
_notmuch_messages_has_next (notmuch_messages_t *messages);
/* query.cc */
bool
_notmuch_mset_messages_valid (notmuch_messages_t *messages);
notmuch_message_t *
_notmuch_mset_messages_get (notmuch_messages_t *messages);
void
_notmuch_mset_messages_move_to_next (notmuch_messages_t *messages);
bool
_notmuch_doc_id_set_contains (notmuch_doc_id_set_t *doc_ids,
unsigned int doc_id);
void
_notmuch_doc_id_set_remove (notmuch_doc_id_set_t *doc_ids,
unsigned int doc_id);
/* querying xapian documents by type (e.g. "mail" or "ghost"): */
notmuch_status_t
_notmuch_query_search_documents (notmuch_query_t *query,
const char *type,
notmuch_messages_t **out);
notmuch_status_t
_notmuch_query_count_documents (notmuch_query_t *query,
const char *type,
unsigned *count_out);
/* message-id.c */
/* Parse an RFC 822 message-id, discarding whitespace, any RFC 822
* comments, and the '<' and '>' delimiters.
*
* If not NULL, then *next will be made to point to the first character
* not parsed, (possibly pointing to the final '\0' terminator.
*
* Returns a newly talloc'ed string belonging to 'ctx'.
*
* Returns NULL if there is any error parsing the message-id. */
char *
_notmuch_message_id_parse (void *ctx, const char *message_id, const char **next);
/* Parse a message-id, discarding leading and trailing whitespace, and
* '<' and '>' delimiters.
*
* Apply a probably-stricter-than RFC definition of what is allowed in
* a message-id. In particular, forbid whitespace.
*
* Returns a newly talloc'ed string belonging to 'ctx'.
*
* Returns NULL if there is any error parsing the message-id.
*/
char *
_notmuch_message_id_parse_strict (void *ctx, const char *message_id);
/* message.cc */
void
_notmuch_message_add_reply (notmuch_message_t *message,
notmuch_message_t *reply);
void
_notmuch_message_remove_unprefixed_terms (notmuch_message_t *message);
const char *
_notmuch_message_get_thread_id_only (notmuch_message_t *message);
size_t _notmuch_message_get_thread_depth (notmuch_message_t *message);
void
_notmuch_message_label_depths (notmuch_message_t *message,
size_t depth);
notmuch_message_list_t *
_notmuch_message_sort_subtrees (void *ctx, notmuch_message_list_t *list);
/* sha1.c */
char *
_notmuch_sha1_of_string (const char *str);
char *
_notmuch_sha1_of_file (const char *filename);
/* string-list.c */
typedef struct _notmuch_string_node {
char *string;
struct _notmuch_string_node *next;
} notmuch_string_node_t;
typedef struct _notmuch_string_list {
int length;
notmuch_string_node_t *head;
notmuch_string_node_t **tail;
} notmuch_string_list_t;
notmuch_string_list_t *
_notmuch_string_list_create (const void *ctx);
/*
* return the number of strings in 'list'
*/
int
_notmuch_string_list_length (notmuch_string_list_t *list);
/* Add 'string' to 'list'.
*
* The list will create its own talloced copy of 'string'.
*/
void
_notmuch_string_list_append (notmuch_string_list_t *list,
const char *string);
void
_notmuch_string_list_sort (notmuch_string_list_t *list);
const notmuch_string_list_t *
_notmuch_message_get_references (notmuch_message_t *message);
/* string-map.c */
typedef struct _notmuch_string_map notmuch_string_map_t;
typedef struct _notmuch_string_map_iterator notmuch_string_map_iterator_t;
notmuch_string_map_t *
_notmuch_string_map_create (const void *ctx);
void
_notmuch_string_map_append (notmuch_string_map_t *map,
const char *key,
const char *value);
void
_notmuch_string_map_set (notmuch_string_map_t *map,
const char *key,
const char *value);
const char *
_notmuch_string_map_get (notmuch_string_map_t *map, const char *key);
notmuch_string_map_iterator_t *
_notmuch_string_map_iterator_create (notmuch_string_map_t *map, const char *key,
bool exact);
bool
_notmuch_string_map_iterator_valid (notmuch_string_map_iterator_t *iter);
void
_notmuch_string_map_iterator_move_to_next (notmuch_string_map_iterator_t *iter);
const char *
_notmuch_string_map_iterator_key (notmuch_string_map_iterator_t *iterator);
const char *
_notmuch_string_map_iterator_value (notmuch_string_map_iterator_t *iterator);
void
_notmuch_string_map_iterator_destroy (notmuch_string_map_iterator_t *iterator);
/* Create an iterator for user headers. Destroy with
* _notmuch_string_map_iterator_destroy. Actually in database.cc*/
notmuch_string_map_iterator_t *
_notmuch_database_user_headers (notmuch_database_t *notmuch);
/* tags.c */
notmuch_tags_t *
_notmuch_tags_create (const void *ctx, notmuch_string_list_t *list);
/* filenames.c */
/* The notmuch_filenames_t iterates over a notmuch_string_list_t of
* file names */
notmuch_filenames_t *
_notmuch_filenames_create (const void *ctx,
notmuch_string_list_t *list);
/* thread.cc */
notmuch_thread_t *
_notmuch_thread_create (void *ctx,
notmuch_database_t *notmuch,
unsigned int seed_doc_id,
notmuch_doc_id_set_t *match_set,
notmuch_string_list_t *excluded_terms,
notmuch_exclude_t omit_exclude,
notmuch_sort_t sort);
/* indexopts.c */
struct _notmuch_indexopts {
_notmuch_crypto_t crypto;
};
#define CONFIG_HEADER_PREFIX "index.header."
#define EMPTY_STRING(s) ((s)[0] == '\0')
/* config.cc */
notmuch_status_t
_notmuch_config_load_from_database (notmuch_database_t * db);
notmuch_status_t
_notmuch_config_load_from_file (notmuch_database_t * db, GKeyFile *file);
notmuch_status_t
_notmuch_config_load_defaults (notmuch_database_t * db);
void
_notmuch_config_cache (notmuch_database_t *db, notmuch_config_key_t key, const char* val);
/* open.cc */
notmuch_status_t
_notmuch_choose_xapian_path (void *ctx, const char *database_path, const char **xapian_path, char **message);
NOTMUCH_END_DECLS
#ifdef __cplusplus
/* Implicit typecast from 'void *' to 'T *' is okay in C, but not in
* C++. In talloc_steal, an explicit cast is provided for type safety
* in some GCC versions. Otherwise, a cast is required. Provide a
* template function for this to maintain type safety, and redefine
* talloc_steal to use it.
*/
#if ! (__GNUC__ >= 3)
template <class T> T *
_notmuch_talloc_steal (const void *new_ctx, const T *ptr)
{
return static_cast<T *> (talloc_steal (new_ctx, ptr));
}
#undef talloc_steal
#define talloc_steal _notmuch_talloc_steal
#endif
#endif
#endif
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