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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd). | |
3 | * cache.c - code for caching files | |
4 | * | |
5 | * Copyright (C) 2003 Lee Hardy <lee@leeh.co.uk> | |
6 | * Copyright (C) 2003-2005 ircd-ratbox development team | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions are | |
10 | * met: | |
11 | * | |
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. | |
19 | * | |
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. | |
31 | * | |
1d3e262e | 32 | * $Id: cache.c 3436 2007-05-02 19:56:40Z jilles $ |
212380e3 AC |
33 | */ |
34 | ||
35 | #include "stdinc.h" | |
36 | #include "ircd_defs.h" | |
37 | #include "common.h" | |
38 | #include "s_conf.h" | |
212380e3 | 39 | #include "client.h" |
212380e3 AC |
40 | #include "hash.h" |
41 | #include "cache.h" | |
42 | #include "sprintf_irc.h" | |
9802490c | 43 | #include "irc_dictionary.h" |
330fc5c1 | 44 | #include "numeric.h" |
212380e3 AC |
45 | |
46 | static BlockHeap *cachefile_heap = NULL; | |
47 | static BlockHeap *cacheline_heap = NULL; | |
48 | ||
49 | struct cachefile *user_motd = NULL; | |
50 | struct cachefile *oper_motd = NULL; | |
212380e3 AC |
51 | char user_motd_changed[MAX_DATE_STRING]; |
52 | ||
85550587 JT |
53 | struct Dictionary *help_dict_oper = NULL; |
54 | struct Dictionary *help_dict_user = NULL; | |
9802490c | 55 | |
212380e3 AC |
56 | /* init_cache() |
57 | * | |
58 | * inputs - | |
59 | * outputs - | |
60 | * side effects - inits the file/line cache blockheaps, loads motds | |
61 | */ | |
62 | void | |
63 | init_cache(void) | |
64 | { | |
65 | cachefile_heap = BlockHeapCreate(sizeof(struct cachefile), CACHEFILE_HEAP_SIZE); | |
66 | cacheline_heap = BlockHeapCreate(sizeof(struct cacheline), CACHELINE_HEAP_SIZE); | |
67 | ||
212380e3 AC |
68 | user_motd_changed[0] = '\0'; |
69 | ||
70 | user_motd = cache_file(MPATH, "ircd.motd", 0); | |
71 | oper_motd = cache_file(OPATH, "opers.motd", 0); | |
9802490c | 72 | |
85550587 JT |
73 | help_dict_oper = irc_dictionary_create(strcasecmp); |
74 | help_dict_user = irc_dictionary_create(strcasecmp); | |
212380e3 AC |
75 | } |
76 | ||
77 | /* cache_file() | |
78 | * | |
79 | * inputs - file to cache, files "shortname", flags to set | |
80 | * outputs - pointer to file cached, else NULL | |
81 | * side effects - | |
82 | */ | |
83 | struct cachefile * | |
84 | cache_file(const char *filename, const char *shortname, int flags) | |
85 | { | |
86 | FILE *in; | |
87 | struct cachefile *cacheptr; | |
88 | struct cacheline *lineptr; | |
89 | char line[BUFSIZE]; | |
90 | char *p; | |
91 | ||
92 | if((in = fopen(filename, "r")) == NULL) | |
93 | return NULL; | |
94 | ||
95 | if(strcmp(shortname, "ircd.motd") == 0) | |
96 | { | |
97 | struct stat sb; | |
98 | struct tm *local_tm; | |
99 | ||
100 | if(fstat(fileno(in), &sb) < 0) | |
101 | return NULL; | |
102 | ||
103 | local_tm = localtime(&sb.st_mtime); | |
104 | ||
105 | if(local_tm != NULL) | |
b2f0da88 | 106 | rb_snprintf(user_motd_changed, sizeof(user_motd_changed), |
212380e3 AC |
107 | "%d/%d/%d %d:%d", |
108 | local_tm->tm_mday, local_tm->tm_mon + 1, | |
109 | 1900 + local_tm->tm_year, local_tm->tm_hour, | |
110 | local_tm->tm_min); | |
111 | } | |
112 | ||
113 | cacheptr = BlockHeapAlloc(cachefile_heap); | |
114 | ||
115 | strlcpy(cacheptr->name, shortname, sizeof(cacheptr->name)); | |
116 | cacheptr->flags = flags; | |
117 | ||
118 | /* cache the file... */ | |
119 | while(fgets(line, sizeof(line), in) != NULL) | |
120 | { | |
121 | if((p = strchr(line, '\n')) != NULL) | |
122 | *p = '\0'; | |
123 | ||
1d3e262e JT |
124 | lineptr = BlockHeapAlloc(cacheline_heap); |
125 | if(EmptyString(line)) | |
126 | strlcpy(lineptr->data, " ", sizeof(lineptr->data)); | |
212380e3 | 127 | else |
1d3e262e | 128 | strlcpy(lineptr->data, line, sizeof(lineptr->data)); |
330fc5c1 | 129 | rb_dlinkAddTail(lineptr, &lineptr->linenode, &cacheptr->contents); |
212380e3 AC |
130 | } |
131 | ||
132 | fclose(in); | |
133 | return cacheptr; | |
134 | } | |
135 | ||
212380e3 AC |
136 | /* free_cachefile() |
137 | * | |
138 | * inputs - cachefile to free | |
139 | * outputs - | |
140 | * side effects - cachefile and its data is free'd | |
141 | */ | |
142 | void | |
143 | free_cachefile(struct cachefile *cacheptr) | |
144 | { | |
330fc5c1 | 145 | rb_dlink_node *ptr; |
637c4932 | 146 | rb_dlink_node *next_ptr; |
212380e3 AC |
147 | |
148 | if(cacheptr == NULL) | |
149 | return; | |
150 | ||
637c4932 | 151 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, cacheptr->contents.head) |
212380e3 | 152 | { |
1d3e262e | 153 | BlockHeapFree(cacheline_heap, ptr->data); |
212380e3 AC |
154 | } |
155 | ||
156 | BlockHeapFree(cachefile_heap, cacheptr); | |
157 | } | |
158 | ||
159 | /* load_help() | |
160 | * | |
161 | * inputs - | |
162 | * outputs - | |
e8149a2c JT |
163 | * side effects - old help cache deleted |
164 | * - contents of help directories are loaded. | |
212380e3 AC |
165 | */ |
166 | void | |
167 | load_help(void) | |
168 | { | |
169 | DIR *helpfile_dir = NULL; | |
170 | struct dirent *ldirent= NULL; | |
171 | char filename[MAXPATHLEN]; | |
172 | struct cachefile *cacheptr; | |
e8149a2c | 173 | struct DictionaryIter iter; |
212380e3 | 174 | |
85550587 | 175 | DICTIONARY_FOREACH(cacheptr, &iter, help_dict_oper) |
e8149a2c | 176 | { |
85550587 JT |
177 | irc_dictionary_delete(help_dict_oper, cacheptr->name); |
178 | free_cachefile(cacheptr); | |
179 | } | |
180 | DICTIONARY_FOREACH(cacheptr, &iter, help_dict_user) | |
181 | { | |
182 | irc_dictionary_delete(help_dict_user, cacheptr->name); | |
e8149a2c JT |
183 | free_cachefile(cacheptr); |
184 | } | |
185 | ||
212380e3 AC |
186 | helpfile_dir = opendir(HPATH); |
187 | ||
188 | if(helpfile_dir == NULL) | |
189 | return; | |
190 | ||
191 | while((ldirent = readdir(helpfile_dir)) != NULL) | |
192 | { | |
b2f0da88 | 193 | rb_snprintf(filename, sizeof(filename), "%s/%s", HPATH, ldirent->d_name); |
212380e3 | 194 | cacheptr = cache_file(filename, ldirent->d_name, HELP_OPER); |
85550587 | 195 | irc_dictionary_add(help_dict_oper, cacheptr->name, cacheptr); |
212380e3 AC |
196 | } |
197 | ||
198 | closedir(helpfile_dir); | |
199 | helpfile_dir = opendir(UHPATH); | |
200 | ||
201 | if(helpfile_dir == NULL) | |
202 | return; | |
203 | ||
204 | while((ldirent = readdir(helpfile_dir)) != NULL) | |
205 | { | |
b2f0da88 | 206 | rb_snprintf(filename, sizeof(filename), "%s/%s", UHPATH, ldirent->d_name); |
212380e3 | 207 | |
212380e3 | 208 | cacheptr = cache_file(filename, ldirent->d_name, HELP_USER); |
85550587 | 209 | irc_dictionary_add(help_dict_user, cacheptr->name, cacheptr); |
212380e3 AC |
210 | } |
211 | ||
212 | closedir(helpfile_dir); | |
213 | } | |
214 | ||
215 | /* send_user_motd() | |
216 | * | |
217 | * inputs - client to send motd to | |
218 | * outputs - client is sent motd if exists, else ERR_NOMOTD | |
219 | * side effects - | |
220 | */ | |
221 | void | |
222 | send_user_motd(struct Client *source_p) | |
223 | { | |
224 | struct cacheline *lineptr; | |
330fc5c1 | 225 | rb_dlink_node *ptr; |
212380e3 AC |
226 | const char *myname = get_id(&me, source_p); |
227 | const char *nick = get_id(source_p, source_p); | |
228 | ||
330fc5c1 | 229 | if(user_motd == NULL || rb_dlink_list_length(&user_motd->contents) == 0) |
212380e3 AC |
230 | { |
231 | sendto_one(source_p, form_str(ERR_NOMOTD), myname, nick); | |
232 | return; | |
233 | } | |
234 | ||
235 | sendto_one(source_p, form_str(RPL_MOTDSTART), myname, nick, me.name); | |
236 | ||
330fc5c1 | 237 | RB_DLINK_FOREACH(ptr, user_motd->contents.head) |
212380e3 AC |
238 | { |
239 | lineptr = ptr->data; | |
240 | sendto_one(source_p, form_str(RPL_MOTD), myname, nick, lineptr->data); | |
241 | } | |
242 | ||
243 | sendto_one(source_p, form_str(RPL_ENDOFMOTD), myname, nick); | |
244 | } | |
245 | ||
246 | /* send_oper_motd() | |
247 | * | |
248 | * inputs - client to send motd to | |
249 | * outputs - client is sent oper motd if exists | |
250 | * side effects - | |
251 | */ | |
252 | void | |
253 | send_oper_motd(struct Client *source_p) | |
254 | { | |
255 | struct cacheline *lineptr; | |
330fc5c1 | 256 | rb_dlink_node *ptr; |
212380e3 | 257 | |
330fc5c1 | 258 | if(oper_motd == NULL || rb_dlink_list_length(&oper_motd->contents) == 0) |
212380e3 AC |
259 | return; |
260 | ||
261 | sendto_one(source_p, form_str(RPL_OMOTDSTART), | |
262 | me.name, source_p->name); | |
263 | ||
330fc5c1 | 264 | RB_DLINK_FOREACH(ptr, oper_motd->contents.head) |
212380e3 AC |
265 | { |
266 | lineptr = ptr->data; | |
267 | sendto_one(source_p, form_str(RPL_OMOTD), | |
268 | me.name, source_p->name, lineptr->data); | |
269 | } | |
270 | ||
271 | sendto_one(source_p, form_str(RPL_ENDOFOMOTD), | |
272 | me.name, source_p->name); | |
273 | } | |
274 |