1 // Index messages by EUID per room.
3 // Copyright (c) 1987-2022 by the citadel.org team
5 // This program is open source software. Use, duplication, or disclosure
6 // is subject to the terms of the GNU General Public License, version 3.
7 // The program is distributed without any warranty, expressed or implied.
11 #include <libcitadel.h>
12 #include "citserver.h"
15 // The structure of an euidindex record *key* is:
17 // |----room_number----|----------EUID-------------|
18 // (sizeof long) (actual length of euid)
21 // The structure of an euidindex record *value* is:
23 // |-----msg_number----|----room_number----|----------EUID-------------|
24 // (sizeof long) (sizeof long) (actual length of euid)
26 // Return nonzero if the supplied room is one which should have
28 int DoesThisRoomNeedEuidIndexing(struct ctdlroom *qrbuf) {
30 switch(qrbuf->QRdefaultview) {
31 case VIEW_BBS: return(0);
32 case VIEW_MAILBOX: return(0);
33 case VIEW_ADDRESSBOOK: return(1);
34 case VIEW_DRAFTS: return(0);
35 case VIEW_CALENDAR: return(1);
36 case VIEW_TASKS: return(1);
37 case VIEW_NOTES: return(1);
38 case VIEW_WIKI: return(1);
39 case VIEW_BLOG: return(1);
46 // Locate a message in a given room with a given euid, and return
47 // its message number.
48 long locate_message_by_euid(char *euid, struct ctdlroom *qrbuf) {
49 return CtdlLocateMessageByEuid (euid, qrbuf);
53 long CtdlLocateMessageByEuid(char *euid, struct ctdlroom *qrbuf) {
56 struct cdbdata *cdb_euid;
59 syslog(LOG_DEBUG, "euidindex: searching for EUID <%s> in <%s>", euid, qrbuf->QRname);
61 key_len = strlen(euid) + sizeof(long) + 1;
62 key = malloc(key_len);
63 memcpy(key, &qrbuf->QRnumber, sizeof(long));
64 strcpy(&key[sizeof(long)], euid);
66 cdb_euid = cdb_fetch(CDB_EUIDINDEX, key, key_len);
69 if (cdb_euid == NULL) {
73 // The first (sizeof long) of the record is what we're looking for. Throw away the rest.
74 memcpy(&msgnum, cdb_euid->ptr, sizeof(long));
77 syslog(LOG_DEBUG, "euidindex: returning msgnum = %ld", msgnum);
82 // Store the euid index for a message, which has presumably just been
83 // stored in this room by the caller.
84 void index_message_by_euid(char *euid, struct ctdlroom *qrbuf, long msgnum) {
90 syslog(LOG_DEBUG, "euidindex: indexing message #%ld <%s> in <%s>", msgnum, euid, qrbuf->QRname);
92 key_len = strlen(euid) + sizeof(long) + 1;
93 key = malloc(key_len);
94 memcpy(key, &qrbuf->QRnumber, sizeof(long));
95 strcpy(&key[sizeof(long)], euid);
97 data_len = sizeof(long) + key_len;
98 data = malloc(data_len);
100 memcpy(data, &msgnum, sizeof(long));
101 memcpy(&data[sizeof(long)], key, key_len);
103 cdb_store(CDB_EUIDINDEX, key, key_len, data, data_len);
109 // Called by rebuild_euid_index_for_room() to index one message.
110 void rebuild_euid_index_for_msg(long msgnum, void *userdata) {
111 struct CtdlMessage *msg = NULL;
113 msg = CtdlFetchMessage(msgnum, 0);
114 if (msg == NULL) return;
115 if (!CM_IsEmpty(msg, eExclusiveID)) {
116 index_message_by_euid(msg->cm_fields[eExclusiveID], &CC->room, msgnum);
122 void rebuild_euid_index_for_room(struct ctdlroom *qrbuf, void *data) {
123 static struct RoomProcList *rplist = NULL;
124 struct RoomProcList *ptr;
127 // Lazy programming here. Call this function as a CtdlForEachRoom backend
128 // in order to queue up the room names, or call it with a null room
129 // to make it do the processing.
131 ptr = (struct RoomProcList *)
132 malloc(sizeof (struct RoomProcList));
133 if (ptr == NULL) return;
135 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
141 while (rplist != NULL) {
142 if (CtdlGetRoom(&qr, rplist->name) == 0) {
143 if (DoesThisRoomNeedEuidIndexing(&qr)) {
145 "euidindex: rebuilding EUID index for <%s>",
147 CtdlUserGoto(rplist->name, 0, 0, NULL, NULL, NULL, NULL);
148 CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL, rebuild_euid_index_for_msg, NULL);
152 rplist = rplist->next;
158 // Globally rebuild the EUID indices in every room.
159 void rebuild_euid_index(void) {
160 cdb_trunc(CDB_EUIDINDEX); // delete the old indices
161 CtdlForEachRoom(rebuild_euid_index_for_room, NULL); // enumerate room names
162 rebuild_euid_index_for_room(NULL, NULL); // and index them
166 // Server command to fetch a message number given an euid.
167 void cmd_euid(char *cmdbuf) {
170 struct cdbdata *cdbfr;
171 long *msglist = NULL;
175 if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
177 extract_token(euid, cmdbuf, 0, '|', sizeof euid);
178 msgnum = CtdlLocateMessageByEuid(euid, &CC->room);
180 cprintf("%d not found\n", ERROR + MESSAGE_NOT_FOUND);
184 cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
186 num_msgs = cdbfr->len / sizeof(long);
187 msglist = (long *) cdbfr->ptr;
188 for (i = 0; i < num_msgs; ++i) {
189 if (msglist[i] == msgnum) {
191 cprintf("%d %ld\n", CIT_OK, msgnum);
198 cprintf("%d not found\n", ERROR + MESSAGE_NOT_FOUND);
202 char *ctdl_module_init_euidindex(void) {
204 CtdlRegisterProtoHook(cmd_euid, "EUID", "Perform operations on Extended IDs for messages");
206 // return our id for the log