]>
Commit | Line | Data |
---|---|---|
c86edd1d Q |
1 | /* nick.c */ |
2 | ||
3 | #include "nick.h" | |
4 | #include "../lib/flags.h" | |
5 | #include "../lib/irc_string.h" | |
6 | #include "../lib/base64.h" | |
7 | #include "../irc/irc.h" | |
8 | #include "../irc/irc_config.h" | |
9 | #include "../core/error.h" | |
10 | #include "../core/hooks.h" | |
11 | #include "../lib/sstring.h" | |
12 | #include "../server/server.h" | |
13 | #include "../parser/parser.h" | |
87698d77 | 14 | #include "../lib/version.h" |
103521a1 | 15 | #include "../core/nsmalloc.h" |
16 | ||
c86edd1d Q |
17 | #include <stdlib.h> |
18 | #include <string.h> | |
19 | #include <stdio.h> | |
20 | ||
70b0a4e5 | 21 | MODULE_VERSION(""); |
87698d77 | 22 | |
c86edd1d Q |
23 | const flag umodeflags[] = { |
24 | { 'i', UMODE_INV }, | |
25 | { 'w', UMODE_WALLOPS }, | |
26 | { 'g', UMODE_DEBUG }, | |
27 | { 'o', UMODE_OPER }, | |
28 | { 'k', UMODE_SERVICE }, | |
29 | { 'X', UMODE_XOPER }, | |
30 | { 'd', UMODE_DEAF }, | |
31 | { 'r', UMODE_ACCOUNT }, | |
32 | { 'n', UMODE_HIDECHAN }, | |
33 | { 'x', UMODE_HIDEHOST }, | |
34 | { 'h', UMODE_SETHOST }, | |
35 | { 'R', UMODE_REGPRIV }, | |
36 | { 'I', UMODE_HIDEIDLE }, | |
e98d808a | 37 | { 'P', UMODE_PARANOID }, |
c86edd1d Q |
38 | { '\0', 0 } }; |
39 | ||
c153c0dc CP |
40 | const flag accountflags[] = { |
41 | { 's', AFLAG_STAFF }, | |
42 | { 'd', AFLAG_DEVELOPER }, | |
43 | { '\0', 0 } }; | |
44 | ||
c86edd1d Q |
45 | #define nickhash(x) ((crc32i(x))%NICKHASHSIZE) |
46 | ||
47 | nick *nicktable[NICKHASHSIZE]; | |
48 | nick **servernicks[MAXSERVERS]; | |
49 | ||
50 | sstring *nickextnames[MAXNICKEXTS]; | |
51 | ||
52 | void nickstats(int hooknum, void *arg); | |
53 | ||
54 | void _init() { | |
e31727be | 55 | unsigned int i; |
56 | authname *anp; | |
57 | ||
58 | /* Clear up the nicks in authext */ | |
59 | for (i=0;i<AUTHNAMEHASHSIZE;i++) | |
60 | for (anp=authnametable[i];anp;anp=anp->next) | |
61 | anp->nicks=NULL; | |
62 | ||
c86edd1d Q |
63 | initnickalloc(); |
64 | initnickhelpers(); | |
65 | memset(nicktable,0,sizeof(nicktable)); | |
66 | memset(servernicks,0,sizeof(servernicks)); | |
67 | ||
68 | /* Register our hooks */ | |
69 | registerhook(HOOK_SERVER_NEWSERVER,&handleserverchange); | |
70 | registerhook(HOOK_SERVER_LOSTSERVER,&handleserverchange); | |
71 | registerhook(HOOK_CORE_STATSREQUEST,&nickstats); | |
72 | ||
73 | /* And our server handlers */ | |
74 | registerserverhandler("N",&handlenickmsg,10); | |
75 | registerserverhandler("D",&handlekillmsg,2); | |
76 | registerserverhandler("Q",&handlequitmsg,1); | |
77 | registerserverhandler("M",&handleusermodemsg,3); | |
78 | registerserverhandler("W",&handlewhoismsg,2); | |
47657339 | 79 | registerserverhandler("AC",&handleaccountmsg,4); |
c86edd1d | 80 | registerserverhandler("R",&handlestatsmsg,2); |
6885ae9c | 81 | registerserverhandler("P",&handleprivmsg,2); |
c86edd1d Q |
82 | |
83 | /* Fake the addition of our own server */ | |
84 | handleserverchange(HOOK_SERVER_NEWSERVER,(void *)numerictolong(mynumeric->content,2)); | |
85 | } | |
86 | ||
103521a1 | 87 | void _fini() { |
9cf0b03f CP |
88 | nick *np; |
89 | int i; | |
90 | ||
707c5824 | 91 | fininickhelpers(); |
9cf0b03f CP |
92 | |
93 | for (i=0;i<NICKHASHSIZE;i++) { | |
94 | for (np=nicktable[i];np;np=np->next) { | |
95 | freesstring(np->shident); | |
96 | freesstring(np->sethost); | |
97 | } | |
98 | } | |
99 | ||
df5ab174 | 100 | nsfreeall(POOL_NICK); |
707c5824 | 101 | |
103521a1 | 102 | /* Free the hooks */ |
103 | deregisterhook(HOOK_SERVER_NEWSERVER,&handleserverchange); | |
104 | deregisterhook(HOOK_SERVER_LOSTSERVER,&handleserverchange); | |
105 | deregisterhook(HOOK_CORE_STATSREQUEST,&nickstats); | |
106 | ||
107 | /* And our server handlers */ | |
108 | deregisterserverhandler("N",&handlenickmsg); | |
109 | deregisterserverhandler("D",&handlekillmsg); | |
110 | deregisterserverhandler("Q",&handlequitmsg); | |
111 | deregisterserverhandler("M",&handleusermodemsg); | |
112 | deregisterserverhandler("W",&handlewhoismsg); | |
113 | deregisterserverhandler("AC",&handleaccountmsg); | |
114 | deregisterserverhandler("R",&handlestatsmsg); | |
6885ae9c | 115 | deregisterserverhandler("P",&handleprivmsg); |
103521a1 | 116 | } |
117 | ||
c86edd1d Q |
118 | /* |
119 | * This function handles servers appearing and disappearing. | |
120 | * For a new server, the client table is allocated. | |
121 | * For a disappearing server, all it's clients are killed and the client table is freed. | |
122 | */ | |
123 | ||
124 | void handleserverchange(int hooknum, void *arg) { | |
c3db6f7e | 125 | long servernum; |
c86edd1d Q |
126 | int i; |
127 | ||
c3db6f7e | 128 | servernum=(long)arg; |
c86edd1d Q |
129 | |
130 | switch(hooknum) { | |
131 | case HOOK_SERVER_NEWSERVER: | |
103521a1 | 132 | servernicks[servernum]=(nick **)nsmalloc(POOL_NICK,(serverlist[servernum].maxusernum+1)*sizeof(nick **)); |
c86edd1d Q |
133 | memset(servernicks[servernum],0,(serverlist[servernum].maxusernum+1)*sizeof(nick **)); |
134 | break; | |
135 | ||
136 | case HOOK_SERVER_LOSTSERVER: | |
137 | for (i=0;i<=serverlist[servernum].maxusernum;i++) { | |
138 | if (servernicks[servernum][i]!=NULL) { | |
139 | deletenick(servernicks[servernum][i]); | |
140 | } | |
141 | } | |
2a010087 | 142 | nsfree(POOL_NICK,servernicks[servernum]); |
c86edd1d Q |
143 | break; |
144 | } | |
145 | } | |
146 | ||
147 | /* | |
148 | * deletenick: | |
149 | * | |
150 | * This function handles the removal of a nick from the network | |
151 | */ | |
152 | ||
153 | void deletenick(nick *np) { | |
154 | nick **nh; | |
155 | ||
156 | /* Fire the hook. This will deal with removal from channels etc. */ | |
157 | triggerhook(HOOK_NICK_LOSTNICK, np); | |
158 | ||
159 | /* Release the realname and hostname parts */ | |
160 | ||
161 | for (nh=&(np->realname->nicks);*nh;nh=&((*nh)->nextbyrealname)) { | |
162 | if (*nh==np) { | |
163 | *nh=np->nextbyrealname; | |
164 | break; | |
165 | } | |
166 | } | |
167 | ||
168 | for (nh=&(np->host->nicks);*nh;nh=&((*nh)->nextbyhost)) { | |
169 | if (*nh==np) { | |
170 | *nh=np->nextbyhost; | |
171 | break; | |
172 | } | |
173 | } | |
174 | ||
175 | releaserealname(np->realname); | |
176 | releasehost(np->host); | |
177 | ||
47657339 C |
178 | if(IsAccount(np) && np->auth) |
179 | { | |
180 | np->auth->usercount--; | |
181 | ||
182 | for (nh=&(np->auth->nicks);*nh;nh=&((*nh)->nextbyauthname)) { | |
183 | if (*nh==np) { | |
184 | *nh=np->nextbyauthname; | |
185 | break; | |
186 | } | |
187 | } | |
188 | ||
189 | releaseauthname(np->auth); | |
190 | } | |
191 | ||
c86edd1d Q |
192 | freesstring(np->shident); /* freesstring(NULL) is OK */ |
193 | freesstring(np->sethost); | |
194 | ||
96644df6 | 195 | node_decrement_usercount(np->ipnode); |
526e7c1d P |
196 | derefnode(iptree, np->ipnode); |
197 | ||
198 | /* TODO: figure out how to cleanly remove nodes without affecting other modules */ | |
199 | ||
c86edd1d Q |
200 | /* Delete the nick from the servernick table */ |
201 | *(gethandlebynumericunsafe(np->numeric))=NULL; | |
202 | ||
203 | /* Remove the nick from the hash table */ | |
204 | removenickfromhash(np); | |
205 | ||
206 | freenick(np); | |
207 | } | |
208 | ||
209 | void addnicktohash(nick *np) { | |
210 | np->next=nicktable[nickhash(np->nick)]; | |
211 | nicktable[nickhash(np->nick)]=np; | |
212 | } | |
213 | ||
214 | void removenickfromhash(nick *np) { | |
215 | nick **nh; | |
216 | ||
217 | for (nh=&(nicktable[nickhash(np->nick)]);*nh;nh=&((*nh)->next)) { | |
218 | if ((*nh)==np) { | |
219 | (*nh)=np->next; | |
220 | break; | |
221 | } | |
222 | } | |
223 | } | |
224 | ||
225 | nick *getnickbynick(const char *name) { | |
226 | nick *np; | |
227 | ||
228 | for (np=nicktable[nickhash(name)];np;np=np->next) { | |
229 | if (!ircd_strcmp(np->nick,name)) | |
230 | return np; | |
231 | } | |
232 | ||
233 | return NULL; | |
234 | } | |
235 | ||
236 | void nickstats(int hooknum, void *arg) { | |
237 | int total,maxchain,curchain,i,buckets; | |
238 | nick *np; | |
239 | char buf[200]; | |
240 | ||
241 | /* Get nick stats */ | |
242 | buckets=total=maxchain=curchain=0; | |
243 | for (i=0;i<NICKHASHSIZE;i++,curchain=0) { | |
244 | np=nicktable[i]; | |
245 | if (np!=NULL) { | |
246 | buckets++; | |
247 | for (;np;np=np->next) { | |
248 | total++; | |
249 | curchain++; | |
250 | } | |
251 | } | |
252 | if (curchain>maxchain) { | |
253 | maxchain=curchain; | |
254 | } | |
255 | } | |
256 | ||
c3db6f7e | 257 | if ((long)arg>5) { |
c86edd1d Q |
258 | /* Full stats */ |
259 | sprintf(buf,"Nick : %6d nicks (HASH: %6d/%6d, chain %3d)",total,buckets,NICKHASHSIZE,maxchain); | |
c3db6f7e | 260 | } else if ((long)arg>2) { |
c86edd1d Q |
261 | sprintf(buf,"Nick : %6d users on network.",total); |
262 | } | |
263 | ||
c3db6f7e | 264 | if ((long)arg>2) { |
c86edd1d Q |
265 | triggerhook(HOOK_CORE_STATSREPLY,buf); |
266 | } | |
267 | } | |
268 | ||
269 | int registernickext(const char *name) { | |
270 | int i; | |
271 | ||
272 | if (findnickext(name)!=-1) { | |
273 | Error("nick",ERR_WARNING,"Tried to register duplicate nick extension %s",name); | |
274 | return -1; | |
275 | } | |
276 | ||
277 | for (i=0;i<MAXNICKEXTS;i++) { | |
278 | if (nickextnames[i]==NULL) { | |
279 | nickextnames[i]=getsstring(name,100); | |
280 | return i; | |
281 | } | |
282 | } | |
283 | ||
47657339 | 284 | Error("nick",ERR_WARNING,"Tried to register too many nick extensions: %s",name); |
c86edd1d Q |
285 | return -1; |
286 | } | |
287 | ||
288 | int findnickext(const char *name) { | |
289 | int i; | |
290 | ||
291 | for (i=0;i<MAXNICKEXTS;i++) { | |
292 | if (nickextnames[i]!=NULL && !ircd_strcmp(name,nickextnames[i]->content)) { | |
293 | return i; | |
294 | } | |
295 | } | |
296 | ||
297 | return -1; | |
298 | } | |
299 | ||
300 | void releasenickext(int index) { | |
301 | int i; | |
302 | nick *np; | |
303 | ||
304 | freesstring(nickextnames[index]); | |
305 | nickextnames[index]=NULL; | |
306 | ||
307 | for (i=0;i<NICKHASHSIZE;i++) { | |
308 | for (np=nicktable[i];np;np=np->next) { | |
309 | np->exts[index]=NULL; | |
310 | } | |
311 | } | |
312 | } | |
313 | ||
314 | /* visiblehostmask | |
315 | * Produces the "apparent" hostmask as seen by network users. | |
316 | */ | |
317 | ||
318 | char *visiblehostmask(nick *np, char *buf) { | |
28252fef | 319 | char uhbuf[USERLEN+HOSTLEN+2]; |
320 | ||
321 | visibleuserhost(np, uhbuf); | |
322 | sprintf(buf,"%s!%s",np->nick,uhbuf); | |
323 | ||
324 | return buf; | |
325 | } | |
326 | ||
327 | /* visibleuserhost | |
328 | * As above without nick | |
329 | */ | |
330 | ||
331 | char *visibleuserhost(nick *np, char *buf) { | |
c86edd1d Q |
332 | char hostbuf[HOSTLEN+1]; |
333 | char *ident, *host; | |
334 | ||
335 | ident=np->ident; | |
336 | host=np->host->name->content; | |
337 | ||
338 | if (IsSetHost(np)) { | |
339 | if (np->shident) { | |
340 | ident=np->shident->content; | |
341 | } | |
342 | if (np->sethost) { | |
343 | host=np->sethost->content; | |
344 | } | |
345 | } else if (IsAccount(np) && IsHideHost(np)) { | |
346 | sprintf(hostbuf,"%s.%s", np->authname, HIS_HIDDENHOST); | |
347 | host=hostbuf; | |
348 | } | |
349 | ||
28252fef | 350 | sprintf(buf,"%s@%s",ident,host); |
c86edd1d Q |
351 | |
352 | return buf; | |
353 | } | |
354 | ||
355 | #if 0 | |
356 | ||
357 | /* | |
358 | * gethandlebynumeric: | |
359 | * Given a numeric, gives the location in the servernicks table | |
360 | * where it should be. Does not check that the nick currently found | |
361 | * there (if any) has the correct numeric; this is left to the | |
362 | * calling function to figure out. | |
363 | */ | |
364 | ||
365 | nick **gethandlebynumeric(long numeric) { | |
366 | int servernum; | |
367 | int maskednum; | |
368 | server *serv; | |
369 | ||
370 | /* Shift off the client identifier part of the numeric to get the server ID */ | |
371 | servernum=(numeric>>18); | |
372 | ||
373 | if ((serv=getserverdata(servernum))==NULL) { | |
374 | Error("nick",ERR_WARNING,"Numeric %ld refers to non-existent server %d",numeric,servernum); | |
375 | return NULL; | |
376 | } | |
377 | ||
378 | /* Compute the masked numeric */ | |
379 | maskednum=numeric&(serv->maxusernum); | |
380 | ||
381 | return (servernicks[servernum])+maskednum; | |
382 | } | |
383 | ||
384 | /* | |
385 | * getnickbynumeric[str]() | |
386 | * These functions retrieve a nick based on it's numeric on the network | |
387 | * Use the approriate function depending on how your numeric is expressed.. | |
388 | */ | |
389 | ||
390 | nick *getnickbynumeric(long numeric) { | |
391 | nick **nh; | |
392 | ||
393 | nh=gethandlebynumeric(numeric); | |
394 | ||
395 | if ((*nh) && ((*nh)->numeric!=numeric)) { | |
396 | /* We found a masked numeric match, but the actual numeric | |
397 | * is different. This counts as a miss. */ | |
398 | return NULL; | |
399 | } | |
400 | ||
401 | return (*nh); | |
402 | } | |
403 | ||
404 | nick *getnickbynumericstr(char *numericstr) { | |
405 | return getnickbynumeric(numerictolong(numericstr,5)); | |
406 | } | |
407 | ||
408 | #endif | |
526e7c1d | 409 |