X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fmodules%2Ffulltext%2Fserv_fulltext.c;fp=citadel%2Fmodules%2Ffulltext%2Fserv_fulltext.c;h=0000000000000000000000000000000000000000;hb=f6fcf350671e3661f8f22696eb35133014ab6a14;hp=dc5b2b15c7e95e6a6808b4fc86b029190315d1b3;hpb=2e4e67a1f7f65568abace99d13a71024ad06ebde;p=citadel.git

diff --git a/citadel/modules/fulltext/serv_fulltext.c b/citadel/modules/fulltext/serv_fulltext.c
deleted file mode 100644
index dc5b2b15c..000000000
--- a/citadel/modules/fulltext/serv_fulltext.c
+++ /dev/null
@@ -1,478 +0,0 @@
-/*
- * This module handles fulltext indexing of the message base.
- * Copyright (c) 2005-2021 by the citadel.org team
- *
- * This program is open source 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "sysdep.h"
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <pwd.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <time.h>
-#include <sys/wait.h>
-#include <string.h>
-#include <limits.h>
-#include <libcitadel.h>
-#include "citadel.h"
-#include "server.h"
-#include "citserver.h"
-#include "support.h"
-#include "config.h"
-#include "database.h"
-#include "msgbase.h"
-#include "control.h"
-#include "serv_fulltext.h"
-#include "ft_wordbreaker.h"
-#include "threads.h"
-#include "context.h"
-
-#include "ctdl_module.h"
-
-long ft_newhighest = 0L;
-long *ft_newmsgs = NULL;
-int ft_num_msgs = 0;
-int ft_num_alloc = 0;
-
-int ftc_num_msgs[65536];
-long *ftc_msgs[65536];
-
-
-/*
- * Compare function
- */
-int longcmp(const void *rec1, const void *rec2) {
-	long i1, i2;
-
-	i1 = *(const long *)rec1;
-	i2 = *(const long *)rec2;
-
-	if (i1 > i2) return(1);
-	if (i1 < i2) return(-1);
-	return(0);
-}
-
-
-/*
- * Flush our index cache out to disk.
- */
-void ft_flush_cache(void) {
-	int i;
-	time_t last_update = 0;
-
-	for (i=0; i<65536; ++i) {
-		if ((time(NULL) - last_update) >= 10) {
-			syslog(LOG_INFO,
-				"fulltext: flushing index cache to disk (%d%% complete)",
-				(i * 100 / 65536)
-			);
-			last_update = time(NULL);
-		}
-		if (ftc_msgs[i] != NULL) {
-			cdb_store(CDB_FULLTEXT, &i, sizeof(int), ftc_msgs[i],
-				(ftc_num_msgs[i] * sizeof(long)));
-			ftc_num_msgs[i] = 0;
-			free(ftc_msgs[i]);
-			ftc_msgs[i] = NULL;
-		}
-	}
-	syslog(LOG_INFO, "fulltext: flushed index cache to disk (100%% complete)");
-}
-
-
-/*
- * Index or de-index a message.  (op == 1 to index, 0 to de-index)
- */
-void ft_index_message(long msgnum, int op) {
-	int num_tokens = 0;
-	int *tokens = NULL;
-	int i, j;
-	struct cdbdata *cdb_bucket;
-	StrBuf *msgtext;
-	char *txt;
-	int tok;
-	struct CtdlMessage *msg = NULL;
-
-	msg = CtdlFetchMessage(msgnum, 1);
-	if (msg == NULL) {
-		syslog(LOG_ERR, "fulltext: ft_index_message() could not load msg %ld", msgnum);
-		return;
-	}
-
-	if (!CM_IsEmpty(msg, eSuppressIdx)) {
-		syslog(LOG_DEBUG, "fulltext: ft_index_message() excluded msg %ld", msgnum);
-		CM_Free(msg);
-		return;
-	}
-
-	syslog(LOG_DEBUG, "fulltext: ft_index_message() %s msg %ld", (op ? "adding" : "removing") , msgnum);
-
-	/* Output the message as text before indexing it, so we don't end up
-	 * indexing a bunch of encoded base64, etc.
-	 */
-	CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
-	CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_ALL, 0, 1, 0);
-	CM_Free(msg);
-	msgtext = CC->redirect_buffer;
-	CC->redirect_buffer = NULL;
-	if (msgtext != NULL) {
-		syslog(LOG_DEBUG, "fulltext: wordbreaking message %ld (%d bytes)", msgnum, StrLength(msgtext));
-	}
-	txt = SmashStrBuf(&msgtext);
-	wordbreaker(txt, &num_tokens, &tokens);
-	free(txt);
-
-	syslog(LOG_DEBUG, "fulltext: indexing message %ld [%d tokens]", msgnum, num_tokens);
-	if (num_tokens > 0) {
-		for (i=0; i<num_tokens; ++i) {
-
-			/* Add the message to the relevant token bucket */
-
-			/* search for tokens[i] */
-			tok = tokens[i];
-
-			if ( (tok >= 0) && (tok <= 65535) ) {
-				/* fetch the bucket, Liza */
-				if (ftc_msgs[tok] == NULL) {
-					cdb_bucket = cdb_fetch(CDB_FULLTEXT, &tok, sizeof(int));
-					if (cdb_bucket != NULL) {
-						ftc_num_msgs[tok] = cdb_bucket->len / sizeof(long);
-						ftc_msgs[tok] = (long *)cdb_bucket->ptr;
-						cdb_bucket->ptr = NULL;
-						cdb_free(cdb_bucket);
-					}
-					else {
-						ftc_num_msgs[tok] = 0;
-						ftc_msgs[tok] = malloc(sizeof(long));
-					}
-				}
-	
-	
-				if (op == 1) {	/* add to index */
-					++ftc_num_msgs[tok];
-					ftc_msgs[tok] = realloc(ftc_msgs[tok],
-								ftc_num_msgs[tok]*sizeof(long));
-					ftc_msgs[tok][ftc_num_msgs[tok] - 1] = msgnum;
-				}
-	
-				if (op == 0) {	/* remove from index */
-					if (ftc_num_msgs[tok] >= 1) {
-						for (j=0; j<ftc_num_msgs[tok]; ++j) {
-							if (ftc_msgs[tok][j] == msgnum) {
-								memmove(&ftc_msgs[tok][j], &ftc_msgs[tok][j+1], ((ftc_num_msgs[tok] - j - 1)*sizeof(long)));
-								--ftc_num_msgs[tok];
-								--j;
-							}
-						}
-					}
-				}
-			}
-			else {
-				syslog(LOG_ALERT, "fulltext: invalid token %d !!", tok);
-			}
-		}
-
-		free(tokens);
-	}
-}
-
-
-/*
- * Add a message to the list of those to be indexed.
- */
-void ft_index_msg(long msgnum, void *userdata) {
-
-	if ((msgnum > CtdlGetConfigLong("MMfulltext")) && (msgnum <= ft_newhighest)) {
-		++ft_num_msgs;
-		if (ft_num_msgs > ft_num_alloc) {
-			ft_num_alloc += 1024;
-			ft_newmsgs = realloc(ft_newmsgs, (ft_num_alloc * sizeof(long)));
-		}
-		ft_newmsgs[ft_num_msgs - 1] = msgnum;
-	}
-
-}
-
-
-/*
- * Scan a room for messages to index.
- */
-void ft_index_room(struct ctdlroom *qrbuf, void *data)
-{
-	if (server_shutting_down)
-		return;
-		
-	CtdlGetRoom(&CC->room, qrbuf->QRname);
-	CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL, ft_index_msg, NULL);
-}
-
-
-/*
- * Begin the fulltext indexing process.
- */
-void do_fulltext_indexing(void) {
-	int i;
-	static time_t last_progress = 0L;
-	static int is_running = 0;
-	if (is_running) return;         /* Concurrency check - only one can run */
-	is_running = 1;
-
-	/*
-	 * Don't do this if the site doesn't have it enabled.
-	 */
-	if (!CtdlGetConfigInt("c_enable_fulltext")) {
-		return;
-	}
-
-	/*
-	 * If we've switched wordbreaker modules, burn the index and start over.
-	 */
-	begin_critical_section(S_CONTROL);
-	if (CtdlGetConfigInt("MM_fulltext_wordbreaker") != FT_WORDBREAKER_ID) {
-		syslog(LOG_DEBUG, "fulltext: wb ver on disk = %d, code ver = %d",
-			CtdlGetConfigInt("MM_fulltext_wordbreaker"), FT_WORDBREAKER_ID
-		);
-		syslog(LOG_INFO, "fulltext: (re)initializing index");
-		cdb_trunc(CDB_FULLTEXT);
-		CtdlSetConfigLong("MMfulltext", 0);
-	}
-	end_critical_section(S_CONTROL);
-
-	/*
-	 * Silently return if our fulltext index is up to date with new messages.
-	 */
-	if ((CtdlGetConfigLong("MMfulltext") >= CtdlGetConfigLong("MMhighest"))) {
-		return;		/* nothing to do! */
-	}
-
-	/*
-	 * Now go through each room and find messages to index.
-	 */
-	ft_newhighest = CtdlGetConfigLong("MMhighest");
-	CtdlForEachRoom(ft_index_room, NULL);	/* load all msg pointers */
-
-	if (ft_num_msgs > 0) {
-		qsort(ft_newmsgs, ft_num_msgs, sizeof(long), longcmp);
-		for (i=0; i<(ft_num_msgs-1); ++i) { /* purge dups */
-			if (ft_newmsgs[i] == ft_newmsgs[i+1]) {
-				memmove(&ft_newmsgs[i], &ft_newmsgs[i+1],
-					((ft_num_msgs - i - 1)*sizeof(long)));
-				--ft_num_msgs;
-				--i;
-			}
-		}
-
-		/* Here it is ... do each message! */
-		for (i=0; i<ft_num_msgs; ++i) {
-			if (time(NULL) != last_progress) {
-				syslog(LOG_DEBUG,
-					"fulltext: indexed %d of %d messages (%d%%)",
-						i, ft_num_msgs,
-						((i*100) / ft_num_msgs)
-				);
-				last_progress = time(NULL);
-			}
-			ft_index_message(ft_newmsgs[i], 1);
-
-			/* Check to see if we need to quit early */
-			if (server_shutting_down) {
-				syslog(LOG_DEBUG, "fulltext: indexer quitting early");
-				ft_newhighest = ft_newmsgs[i];
-				break;
-			}
-
-			/* Check to see if we have to maybe flush to disk */
-			if (i >= FT_MAX_CACHE) {
-				syslog(LOG_DEBUG, "fulltext: time to flush.");
-				ft_newhighest = ft_newmsgs[i];
-				break;
-			}
-
-		}
-
-		free(ft_newmsgs);
-		ft_num_msgs = 0;
-		ft_num_alloc = 0;
-		ft_newmsgs = NULL;
-	}
-
-	if (server_shutting_down) {
-		is_running = 0;
-		return;
-	}
-	
-	/* Save our place so we don't have to do this again */
-	ft_flush_cache();
-	begin_critical_section(S_CONTROL);
-	CtdlSetConfigLong("MMfulltext", ft_newhighest);
-	CtdlSetConfigInt("MM_fulltext_wordbreaker", FT_WORDBREAKER_ID);
-	end_critical_section(S_CONTROL);
-
-	syslog(LOG_DEBUG, "fulltext: indexing finished");
-	is_running = 0;
-	return;
-}
-
-
-/*
- * API call to perform searches.
- * (This one does the "all of these words" search.)
- * Caller is responsible for freeing the message list.
- */
-void ft_search(int *fts_num_msgs, long **fts_msgs, const char *search_string) {
-	int num_tokens = 0;
-	int *tokens = NULL;
-	int i, j;
-	struct cdbdata *cdb_bucket;
-	int num_all_msgs = 0;
-	long *all_msgs = NULL;
-	int num_ret_msgs = 0;
-	int num_ret_alloc = 0;
-	long *ret_msgs = NULL;
-	int tok;
-
-	wordbreaker(search_string, &num_tokens, &tokens);
-	if (num_tokens > 0) {
-		for (i=0; i<num_tokens; ++i) {
-
-			/* search for tokens[i] */
-			tok = tokens[i];
-
-			/* fetch the bucket, Liza */
-			if (ftc_msgs[tok] == NULL) {
-				cdb_bucket = cdb_fetch(CDB_FULLTEXT, &tok, sizeof(int));
-				if (cdb_bucket != NULL) {
-					ftc_num_msgs[tok] = cdb_bucket->len / sizeof(long);
-					ftc_msgs[tok] = (long *)cdb_bucket->ptr;
-					cdb_bucket->ptr = NULL;
-					cdb_free(cdb_bucket);
-				}
-				else {
-					ftc_num_msgs[tok] = 0;
-					ftc_msgs[tok] = malloc(sizeof(long));
-				}
-			}
-
-			num_all_msgs += ftc_num_msgs[tok];
-			if (num_all_msgs > 0) {
-				all_msgs = realloc(all_msgs, num_all_msgs*sizeof(long) );
-				memcpy(&all_msgs[num_all_msgs-ftc_num_msgs[tok]],
-					ftc_msgs[tok], ftc_num_msgs[tok]*sizeof(long) );
-			}
-
-		}
-		free(tokens);
-		if (all_msgs != NULL) {
-			qsort(all_msgs, num_all_msgs, sizeof(long), longcmp);
-
-			/*
-			 * At this point, if a message appears num_tokens times in the
-			 * list, then it contains all of the search tokens.
-			 */
-			if (num_all_msgs >= num_tokens)
-				for (j=0; j<(num_all_msgs-num_tokens+1); ++j) {
-					if (all_msgs[j] == all_msgs[j+num_tokens-1]) {
-						
-						++num_ret_msgs;
-						if (num_ret_msgs > num_ret_alloc) {
-							num_ret_alloc += 64;
-							ret_msgs = realloc(ret_msgs,
-									   (num_ret_alloc*sizeof(long)) );
-						}
-						ret_msgs[num_ret_msgs - 1] = all_msgs[j];
-						
-					}
-				}
-			free(all_msgs);
-		}
-	}
-
-	*fts_num_msgs = num_ret_msgs;
-	*fts_msgs = ret_msgs;
-}
-
-
-/*
- * This search command is for diagnostic purposes and may be removed or replaced.
- */
-void cmd_srch(char *argbuf) {
-	int num_msgs = 0;
-	long *msgs = NULL;
-	int i;
-	char search_string[256];
-
-	if (CtdlAccessCheck(ac_logged_in)) return;
-
-	if (!CtdlGetConfigInt("c_enable_fulltext")) {
-		cprintf("%d Full text index is not enabled on this server.\n",
-			ERROR + CMD_NOT_SUPPORTED);
-		return;
-	}
-
-	extract_token(search_string, argbuf, 0, '|', sizeof search_string);
-	ft_search(&num_msgs, &msgs, search_string);
-
-	cprintf("%d %d msgs match all search words:\n",
-		LISTING_FOLLOWS, num_msgs);
-	if (num_msgs > 0) {
-		for (i=0; i<num_msgs; ++i) {
-			cprintf("%ld\n", msgs[i]);
-		}
-	}
-	if (msgs != NULL) free(msgs);
-	cprintf("000\n");
-}
-
-
-/*
- * Zero out our index cache.
- */
-void initialize_ft_cache(void) {
-	memset(ftc_num_msgs, 0, (65536 * sizeof(int)));
-	memset(ftc_msgs, 0, (65536 * sizeof(long *)));
-}
-
-
-void ft_delete_remove(char *room, long msgnum)
-{
-	if (room) return;
-	
-	/* Remove from fulltext index */
-	if (CtdlGetConfigInt("c_enable_fulltext")) {
-		ft_index_message(msgnum, 0);
-	}
-}
-
-
-/*****************************************************************************/
-
-CTDL_MODULE_INIT(fulltext)
-{
-	if (!threading)
-	{
-		initialize_ft_cache();
-		CtdlRegisterProtoHook(cmd_srch, "SRCH", "Full text search");
-		CtdlRegisterDeleteHook(ft_delete_remove);
-		CtdlRegisterSearchFuncHook(ft_search, "fulltext");
-		CtdlRegisterSessionHook(do_fulltext_indexing, EVT_TIMER, PRIO_CLEANUP + 300);
-	}
-	/* return our module name for the log */
-	return "fulltext";
-}