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jfr.im git - solanum.git/blob - src/cache.c
2 * ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd).
3 * cache.c - code for caching files
5 * Copyright (C) 2003 Lee Hardy <lee@leeh.co.uk>
6 * Copyright (C) 2003-2005 ircd-ratbox development team
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
12 * 1.Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 * 2.Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3.The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
32 * $Id: cache.c 3436 2007-05-02 19:56:40Z jilles $
36 #include "ircd_defs.h"
46 #include "sprintf_irc.h"
48 static BlockHeap
*cachefile_heap
= NULL
;
49 static BlockHeap
*cacheline_heap
= NULL
;
51 struct cachefile
*user_motd
= NULL
;
52 struct cachefile
*oper_motd
= NULL
;
53 char user_motd_changed
[MAX_DATE_STRING
];
59 * side effects - inits the file/line cache blockheaps, loads motds
64 cachefile_heap
= BlockHeapCreate(sizeof(struct cachefile
), CACHEFILE_HEAP_SIZE
);
65 cacheline_heap
= BlockHeapCreate(sizeof(struct cacheline
), CACHELINE_HEAP_SIZE
);
67 user_motd_changed
[0] = '\0';
69 user_motd
= cache_file(MPATH
, "ircd.motd", 0);
70 oper_motd
= cache_file(OPATH
, "opers.motd", 0);
75 * inputs - file to cache, files "shortname", flags to set
76 * outputs - pointer to file cached, else NULL
80 cache_file(const char *filename
, const char *shortname
, int flags
)
83 struct cachefile
*cacheptr
;
84 struct cacheline
*lineptr
;
88 if((in
= fopen(filename
, "r")) == NULL
)
91 if(strcmp(shortname
, "ircd.motd") == 0)
96 if(fstat(fileno(in
), &sb
) < 0)
99 local_tm
= localtime(&sb
.st_mtime
);
102 ircsnprintf(user_motd_changed
, sizeof(user_motd_changed
),
104 local_tm
->tm_mday
, local_tm
->tm_mon
+ 1,
105 1900 + local_tm
->tm_year
, local_tm
->tm_hour
,
109 cacheptr
= BlockHeapAlloc(cachefile_heap
);
111 strlcpy(cacheptr
->name
, shortname
, sizeof(cacheptr
->name
));
112 cacheptr
->flags
= flags
;
114 /* cache the file... */
115 while(fgets(line
, sizeof(line
), in
) != NULL
)
117 if((p
= strchr(line
, '\n')) != NULL
)
120 lineptr
= BlockHeapAlloc(cacheline_heap
);
121 if(EmptyString(line
))
122 strlcpy(lineptr
->data
, " ", sizeof(lineptr
->data
));
124 strlcpy(lineptr
->data
, line
, sizeof(lineptr
->data
));
125 dlinkAddTail(lineptr
, &lineptr
->linenode
, &cacheptr
->contents
);
134 * inputs - cachefile to free
136 * side effects - cachefile and its data is free'd
139 free_cachefile(struct cachefile
*cacheptr
)
142 dlink_node
*next_ptr
;
147 DLINK_FOREACH_SAFE(ptr
, next_ptr
, cacheptr
->contents
.head
)
149 BlockHeapFree(cacheline_heap
, ptr
->data
);
152 BlockHeapFree(cachefile_heap
, cacheptr
);
159 * side effects - contents of help directories are loaded.
164 DIR *helpfile_dir
= NULL
;
165 struct dirent
*ldirent
= NULL
;
166 char filename
[MAXPATHLEN
];
167 struct cachefile
*cacheptr
;
169 #if defined(S_ISLNK) && defined(HAVE_LSTAT)
173 /* opers must be done first */
174 helpfile_dir
= opendir(HPATH
);
176 if(helpfile_dir
== NULL
)
179 while((ldirent
= readdir(helpfile_dir
)) != NULL
)
181 ircsnprintf(filename
, sizeof(filename
), "%s/%s", HPATH
, ldirent
->d_name
);
182 cacheptr
= cache_file(filename
, ldirent
->d_name
, HELP_OPER
);
183 add_to_help_hash(cacheptr
->name
, cacheptr
);
186 closedir(helpfile_dir
);
187 helpfile_dir
= opendir(UHPATH
);
189 if(helpfile_dir
== NULL
)
192 while((ldirent
= readdir(helpfile_dir
)) != NULL
)
194 ircsnprintf(filename
, sizeof(filename
), "%s/%s", UHPATH
, ldirent
->d_name
);
196 #if defined(S_ISLNK) && defined(HAVE_LSTAT)
197 if(lstat(filename
, &sb
) < 0)
200 /* ok, if its a symlink, we work on the presumption if an
201 * oper help exists of that name, its a symlink to that --fl
203 if(S_ISLNK(sb
.st_mode
))
205 cacheptr
= hash_find_help(ldirent
->d_name
, HELP_OPER
);
209 cacheptr
->flags
|= HELP_USER
;
215 cacheptr
= cache_file(filename
, ldirent
->d_name
, HELP_USER
);
216 add_to_help_hash(cacheptr
->name
, cacheptr
);
219 closedir(helpfile_dir
);
224 * inputs - client to send motd to
225 * outputs - client is sent motd if exists, else ERR_NOMOTD
229 send_user_motd(struct Client
*source_p
)
231 struct cacheline
*lineptr
;
233 const char *myname
= get_id(&me
, source_p
);
234 const char *nick
= get_id(source_p
, source_p
);
236 if(user_motd
== NULL
|| dlink_list_length(&user_motd
->contents
) == 0)
238 sendto_one(source_p
, form_str(ERR_NOMOTD
), myname
, nick
);
242 sendto_one(source_p
, form_str(RPL_MOTDSTART
), myname
, nick
, me
.name
);
244 DLINK_FOREACH(ptr
, user_motd
->contents
.head
)
247 sendto_one(source_p
, form_str(RPL_MOTD
), myname
, nick
, lineptr
->data
);
250 sendto_one(source_p
, form_str(RPL_ENDOFMOTD
), myname
, nick
);
255 * inputs - client to send motd to
256 * outputs - client is sent oper motd if exists
260 send_oper_motd(struct Client
*source_p
)
262 struct cacheline
*lineptr
;
265 if(oper_motd
== NULL
|| dlink_list_length(&oper_motd
->contents
) == 0)
268 sendto_one(source_p
, form_str(RPL_OMOTDSTART
),
269 me
.name
, source_p
->name
);
271 DLINK_FOREACH(ptr
, oper_motd
->contents
.head
)
274 sendto_one(source_p
, form_str(RPL_OMOTD
),
275 me
.name
, source_p
->name
, lineptr
->data
);
278 sendto_one(source_p
, form_str(RPL_ENDOFOMOTD
),
279 me
.name
, source_p
->name
);