2007-01-25 07:40:21 +01:00
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/*
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* ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd).
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* cache.c - code for caching files
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*
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* Copyright (C) 2003 Lee Hardy <lee@leeh.co.uk>
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* Copyright (C) 2003-2005 ircd-ratbox development team
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1.Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2.Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3.The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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2007-05-02 21:56:40 +02:00
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* $Id: cache.c 3436 2007-05-02 19:56:40Z jilles $
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2007-01-25 07:40:21 +01:00
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*/
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#include "stdinc.h"
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#include "ircd_defs.h"
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#include "common.h"
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#include "s_conf.h"
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#include "tools.h"
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#include "client.h"
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#include "memory.h"
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#include "balloc.h"
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#include "event.h"
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#include "hash.h"
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#include "cache.h"
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#include "sprintf_irc.h"
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2007-12-04 02:35:55 +01:00
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#include "irc_dictionary.h"
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2007-01-25 07:40:21 +01:00
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static BlockHeap *cachefile_heap = NULL;
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static BlockHeap *cacheline_heap = NULL;
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struct cachefile *user_motd = NULL;
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struct cachefile *oper_motd = NULL;
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char user_motd_changed[MAX_DATE_STRING];
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2007-12-04 02:35:55 +01:00
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struct Dictionary *help_dict = NULL;
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2007-01-25 07:40:21 +01:00
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/* init_cache()
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*
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* inputs -
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* outputs -
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* side effects - inits the file/line cache blockheaps, loads motds
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*/
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void
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init_cache(void)
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{
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cachefile_heap = BlockHeapCreate(sizeof(struct cachefile), CACHEFILE_HEAP_SIZE);
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cacheline_heap = BlockHeapCreate(sizeof(struct cacheline), CACHELINE_HEAP_SIZE);
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user_motd_changed[0] = '\0';
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user_motd = cache_file(MPATH, "ircd.motd", 0);
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oper_motd = cache_file(OPATH, "opers.motd", 0);
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2007-12-04 02:35:55 +01:00
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help_dict = irc_dictionary_create(strcasecmp);
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2007-01-25 07:40:21 +01:00
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}
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/* cache_file()
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*
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* inputs - file to cache, files "shortname", flags to set
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* outputs - pointer to file cached, else NULL
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* side effects -
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*/
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struct cachefile *
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cache_file(const char *filename, const char *shortname, int flags)
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{
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FILE *in;
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struct cachefile *cacheptr;
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struct cacheline *lineptr;
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char line[BUFSIZE];
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char *p;
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if((in = fopen(filename, "r")) == NULL)
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return NULL;
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if(strcmp(shortname, "ircd.motd") == 0)
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{
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struct stat sb;
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struct tm *local_tm;
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if(fstat(fileno(in), &sb) < 0)
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return NULL;
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local_tm = localtime(&sb.st_mtime);
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if(local_tm != NULL)
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ircsnprintf(user_motd_changed, sizeof(user_motd_changed),
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"%d/%d/%d %d:%d",
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local_tm->tm_mday, local_tm->tm_mon + 1,
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1900 + local_tm->tm_year, local_tm->tm_hour,
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local_tm->tm_min);
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}
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cacheptr = BlockHeapAlloc(cachefile_heap);
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strlcpy(cacheptr->name, shortname, sizeof(cacheptr->name));
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cacheptr->flags = flags;
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/* cache the file... */
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while(fgets(line, sizeof(line), in) != NULL)
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{
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if((p = strchr(line, '\n')) != NULL)
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*p = '\0';
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2007-05-02 21:56:40 +02:00
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lineptr = BlockHeapAlloc(cacheline_heap);
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if(EmptyString(line))
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strlcpy(lineptr->data, " ", sizeof(lineptr->data));
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2007-01-25 07:40:21 +01:00
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else
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2007-05-02 21:56:40 +02:00
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strlcpy(lineptr->data, line, sizeof(lineptr->data));
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dlinkAddTail(lineptr, &lineptr->linenode, &cacheptr->contents);
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2007-01-25 07:40:21 +01:00
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}
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fclose(in);
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return cacheptr;
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}
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/* free_cachefile()
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*
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* inputs - cachefile to free
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* outputs -
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* side effects - cachefile and its data is free'd
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*/
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void
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free_cachefile(struct cachefile *cacheptr)
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{
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dlink_node *ptr;
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dlink_node *next_ptr;
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if(cacheptr == NULL)
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return;
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DLINK_FOREACH_SAFE(ptr, next_ptr, cacheptr->contents.head)
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{
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2007-05-02 21:56:40 +02:00
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BlockHeapFree(cacheline_heap, ptr->data);
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2007-01-25 07:40:21 +01:00
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}
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BlockHeapFree(cachefile_heap, cacheptr);
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}
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/* load_help()
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*
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* inputs -
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* outputs -
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2007-12-12 22:26:17 +01:00
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* side effects - old help cache deleted
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* - contents of help directories are loaded.
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2007-01-25 07:40:21 +01:00
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*/
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void
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load_help(void)
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{
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DIR *helpfile_dir = NULL;
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struct dirent *ldirent= NULL;
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char filename[MAXPATHLEN];
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struct cachefile *cacheptr;
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2007-12-12 22:26:17 +01:00
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struct DictionaryIter iter;
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2007-01-25 07:40:21 +01:00
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#if defined(S_ISLNK) && defined(HAVE_LSTAT)
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struct stat sb;
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#endif
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2007-12-12 22:26:17 +01:00
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DICTIONARY_FOREACH(cacheptr, &iter, help_dict)
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{
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irc_dictionary_delete(help_dict, cacheptr->name);
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free_cachefile(cacheptr);
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}
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2007-01-25 07:40:21 +01:00
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/* opers must be done first */
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helpfile_dir = opendir(HPATH);
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if(helpfile_dir == NULL)
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return;
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while((ldirent = readdir(helpfile_dir)) != NULL)
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{
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ircsnprintf(filename, sizeof(filename), "%s/%s", HPATH, ldirent->d_name);
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cacheptr = cache_file(filename, ldirent->d_name, HELP_OPER);
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2007-12-04 02:35:55 +01:00
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irc_dictionary_add(help_dict, cacheptr->name, cacheptr);
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2007-01-25 07:40:21 +01:00
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}
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closedir(helpfile_dir);
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helpfile_dir = opendir(UHPATH);
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if(helpfile_dir == NULL)
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return;
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while((ldirent = readdir(helpfile_dir)) != NULL)
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{
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ircsnprintf(filename, sizeof(filename), "%s/%s", UHPATH, ldirent->d_name);
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#if defined(S_ISLNK) && defined(HAVE_LSTAT)
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if(lstat(filename, &sb) < 0)
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continue;
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/* ok, if its a symlink, we work on the presumption if an
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* oper help exists of that name, its a symlink to that --fl
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*/
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if(S_ISLNK(sb.st_mode))
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{
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2007-12-04 02:35:55 +01:00
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cacheptr = irc_dictionary_retrieve(help_dict, ldirent->d_name);
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2007-01-25 07:40:21 +01:00
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2007-12-04 02:35:55 +01:00
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if(cacheptr != NULL && cacheptr->flags & HELP_OPER) /* is this really needed? --nenolod */
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2007-01-25 07:40:21 +01:00
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{
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cacheptr->flags |= HELP_USER;
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continue;
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}
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}
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#endif
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cacheptr = cache_file(filename, ldirent->d_name, HELP_USER);
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2007-12-04 02:35:55 +01:00
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irc_dictionary_add(help_dict, cacheptr->name, cacheptr);
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2007-01-25 07:40:21 +01:00
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}
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closedir(helpfile_dir);
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}
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/* send_user_motd()
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*
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* inputs - client to send motd to
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* outputs - client is sent motd if exists, else ERR_NOMOTD
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* side effects -
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*/
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void
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send_user_motd(struct Client *source_p)
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{
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struct cacheline *lineptr;
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dlink_node *ptr;
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const char *myname = get_id(&me, source_p);
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const char *nick = get_id(source_p, source_p);
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if(user_motd == NULL || dlink_list_length(&user_motd->contents) == 0)
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{
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sendto_one(source_p, form_str(ERR_NOMOTD), myname, nick);
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return;
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}
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sendto_one(source_p, form_str(RPL_MOTDSTART), myname, nick, me.name);
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DLINK_FOREACH(ptr, user_motd->contents.head)
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{
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lineptr = ptr->data;
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sendto_one(source_p, form_str(RPL_MOTD), myname, nick, lineptr->data);
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}
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sendto_one(source_p, form_str(RPL_ENDOFMOTD), myname, nick);
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}
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/* send_oper_motd()
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*
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* inputs - client to send motd to
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* outputs - client is sent oper motd if exists
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* side effects -
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*/
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void
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send_oper_motd(struct Client *source_p)
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{
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struct cacheline *lineptr;
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dlink_node *ptr;
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if(oper_motd == NULL || dlink_list_length(&oper_motd->contents) == 0)
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return;
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sendto_one(source_p, form_str(RPL_OMOTDSTART),
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me.name, source_p->name);
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DLINK_FOREACH(ptr, oper_motd->contents.head)
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{
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lineptr = ptr->data;
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sendto_one(source_p, form_str(RPL_OMOTD),
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me.name, source_p->name, lineptr->data);
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}
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sendto_one(source_p, form_str(RPL_ENDOFOMOTD),
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me.name, source_p->name);
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}
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