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7bec4aeb | 1 | /* miscreply.c */ |
2 | ||
3 | ||
4 | #include "miscreply.h" | |
5 | #include "msg.h" | |
6 | #include "numeric.h" | |
7 | #include "../core/error.h" | |
8 | #include "../irc/irc.h" | |
9 | #include "../lib/irc_string.h" | |
10 | #include "../lib/version.h" | |
11 | #include "../nick/nick.h" | |
12 | ||
13 | #include <stdarg.h> | |
14 | #include <stdio.h> | |
15 | ||
16 | /* module version */ | |
17 | MODULE_VERSION("0.0.1"); | |
18 | ||
19 | /* TODO: what module name? miscreply remotereply .. ? */ | |
20 | /* TODO: what includes are required ? */ | |
21 | /* TODO: add proper descriptions, maybe readme file ? */ | |
22 | /* TODO: use serve instead of accessing serverlist[] directly ? */ | |
23 | /* TODO: default.c handle there all remote requests we dont support ? */ | |
24 | /* TODO: how to handle remote requests not for ourself but for other servers we have (juped ones or whatever) ? */ | |
25 | /* TODO: check requests we receive are for me or my servers ? */ | |
26 | /* TODO: remote requests: | |
27 | * ASLL CHECK CONNECT INFO LUSERS MOTD NAMES UPING WHOWAS | |
28 | * ADMIN LINKS PRIVS RPING RPONG STATS TRACE TIME VERSION WHOIS (done) | |
29 | * GLINE JUPE SETTIME (already handled in other places) | |
30 | */ | |
31 | ||
32 | ||
33 | ||
34 | /* init */ | |
35 | void _init() { | |
36 | ||
37 | /* add server handlers */ | |
38 | registerserverhandler(TOK_ADMIN, &handleadminmsg, 1); /* ADMIN */ | |
39 | registerserverhandler(TOK_LINKS, &handlelinksmsg, 2); /* LINKS */ | |
40 | registerserverhandler(TOK_PRIVS, &handleprivsmsg, 1); /* PRIVS */ | |
41 | registerserverhandler(TOK_RPING, &handlerpingmsg, 3); /* RPING */ | |
42 | registerserverhandler(TOK_RPONG, &handlerpongmsg, 4); /* RPONG */ | |
43 | registerserverhandler(TOK_STATS, &handlestatsmsg, 2); /* STATS */ | |
44 | registerserverhandler(TOK_TIME, &handletimemsg, 1); /* TIME */ | |
45 | registerserverhandler(TOK_TRACE, &handletracemsg, 2); /* TRACE */ | |
46 | registerserverhandler(TOK_VERSION, &handleversionmsg, 1); /* VERSION */ | |
47 | registerserverhandler(TOK_WHOIS, &handlewhoismsg, 2); /* WHOIS */ | |
48 | ||
49 | } | |
50 | ||
51 | ||
52 | ||
53 | /* fini */ | |
54 | void _fini() { | |
55 | ||
56 | /* remove server handlers */ | |
57 | deregisterserverhandler(TOK_ADMIN, &handleadminmsg); /* ADMIN */ | |
58 | deregisterserverhandler(TOK_LINKS, &handlelinksmsg); /* LINKS */ | |
59 | deregisterserverhandler(TOK_PRIVS, &handleprivsmsg); /* PRIVS */ | |
60 | deregisterserverhandler(TOK_RPING, &handlerpingmsg); /* RPING */ | |
61 | deregisterserverhandler(TOK_RPONG, &handlerpongmsg); /* RPONG */ | |
62 | deregisterserverhandler(TOK_STATS, &handlestatsmsg); /* STATS */ | |
63 | deregisterserverhandler(TOK_TIME, &handletimemsg); /* TIME */ | |
64 | deregisterserverhandler(TOK_TRACE, &handletracemsg); /* TRACE */ | |
65 | deregisterserverhandler(TOK_VERSION, &handleversionmsg); /* VERSION */ | |
66 | deregisterserverhandler(TOK_WHOIS, &handlewhoismsg); /* WHOIS */ | |
67 | ||
68 | } | |
69 | ||
70 | ||
71 | ||
72 | /* needmoreparams | |
73 | * return error to source user and log if we did not get enough parameters | |
74 | */ | |
75 | void miscreply_needmoreparams(char *sourcenum, char *command) { | |
76 | /* | |
77 | * 461 ERR_NEEDMOREPARAMS "source 461 target command :Not enough parameters" | |
78 | * "irc.netsplit.net 461 foobar JOIN :Not enough parameters" | |
79 | */ | |
80 | send_reply(getmynumeric(), ERR_NEEDMOREPARAMS, sourcenum, "%s :Not enough parameters", command); | |
81 | Error("miscreply", ERR_WARNING, "%s request without enough parameters from %s", command, sourcenum); | |
82 | } | |
83 | ||
84 | ||
85 | ||
86 | /* findserver | |
87 | * return error to log if source server numeric cannot be found | |
88 | * returns server longnumeric | |
89 | * returns -1 when not found | |
90 | */ | |
91 | int miscreply_findserver(char *sourcenum, char *command) { | |
92 | int i = numerictolong(sourcenum, 2); | |
93 | ||
94 | if (serverlist[i].maxusernum == 0) { | |
95 | Error("miscreply", ERR_WARNING, "%s request from unknown server numeric %s", command, sourcenum); | |
96 | return -1; | |
97 | } | |
98 | ||
99 | return i; | |
100 | } | |
101 | ||
102 | ||
103 | ||
104 | /* findservernum | |
105 | * return error to source user and log if server numeric cannot be found | |
106 | * returns server longnumeric | |
107 | * returns -1 when not found | |
108 | */ | |
109 | int miscreply_findservernum(char *sourcenum, char *servernum, char *command) { | |
110 | int i = numerictolong(servernum, 2); | |
111 | ||
112 | if (serverlist[i].maxusernum == 0) { | |
113 | /* | |
114 | * 402 RPL_NOSUCHSERVER "source 402 target * :Server has disconnected" | |
115 | * "irc.netsplit.net 402 foobar * :Server has disconnected" | |
116 | */ | |
117 | send_reply(getmynumeric(), ERR_NOSUCHSERVER, sourcenum, "* :Server has disconnected"); | |
118 | Error("miscreply", ERR_WARNING, "%s request for unknown server numeric %s from numeric %s", command, servernum, sourcenum); | |
119 | return -1; | |
120 | } | |
121 | ||
122 | return i; | |
123 | } | |
124 | ||
125 | ||
126 | ||
127 | /* findservermatch | |
128 | * return error to source user if no servers matching the servermask can be found | |
129 | * returns server longnumeric | |
130 | * returns -1 when not found | |
131 | */ | |
132 | int miscreply_findservermatch(char *sourcenum, char *servermask) { | |
133 | int i; | |
134 | ||
135 | /* go over all servers */ | |
136 | for (i = 0; i < MAXSERVERS; i++) { | |
137 | if (serverlist[i].maxusernum == 0) /* not linked */ | |
138 | continue; | |
139 | if (!match2strings(servermask, serverlist[i].name->content)) /* no match */ | |
140 | continue; | |
141 | return i; | |
142 | } | |
143 | ||
144 | /* | |
145 | * 402 RPL_NOSUCHSERVER "source 402 target server :No such server" | |
146 | * "irc.netsplit.net 402 foobar hub* :No such server" | |
147 | */ | |
148 | send_reply(getmynumeric(), ERR_NOSUCHSERVER, sourcenum, "%s :No such server", servermask); | |
149 | ||
150 | return -1; | |
151 | } | |
152 | ||
153 | ||
154 | ||
155 | /* finduser | |
156 | * return error to log if user numeric cannot be found | |
157 | */ | |
158 | nick *miscreply_finduser(char *sourcenum, char *command) { | |
159 | nick *nick; | |
160 | ||
161 | if (!(nick = getnickbynumericstr(sourcenum))) | |
162 | Error("miscreply", ERR_WARNING, "%s request from unknown user numeric %s", command, sourcenum); | |
163 | ||
164 | return nick; | |
165 | } | |
166 | ||
167 | ||
168 | ||
169 | /* TODO: should it be long intead of int ? */ | |
170 | /* myserver | |
171 | * | |
172 | * return 2 if the server is one of my downlinks (juped servers?), | |
173 | * return 1 if the server is me, else | |
174 | * return 0 | |
175 | */ | |
176 | int miscreply_myserver(int numeric) { | |
177 | ||
178 | /* it is me */ | |
179 | if (IsMeLong(numeric)) | |
180 | return 1; | |
181 | ||
182 | /* while parent server is not me */ | |
183 | while (!IsMeLong(serverlist[numeric].parent)) | |
184 | numeric = serverlist[numeric].parent; | |
185 | ||
186 | /* numeric is my hub, | |
187 | * so the start server is behind it, | |
188 | * and not one of mine | |
189 | */ | |
190 | if (numeric == myhub) | |
191 | return 0; | |
192 | ||
193 | return 2; | |
194 | } | |
195 | ||
196 | ||
197 | ||
198 | /* send_reply | |
199 | * | |
200 | * send server numeric reply to user | |
201 | * | |
202 | */ | |
203 | void send_reply(char *sourcenum, int numeric, char *targetnum, char *pattern, ...) { | |
204 | char buf[BUFSIZE]; | |
205 | va_list val; | |
206 | ||
207 | /* negative numeric? */ | |
208 | if (numeric < 0) | |
209 | return; | |
210 | ||
211 | va_start(val, pattern); | |
212 | vsnprintf(buf, sizeof(buf), pattern, val); | |
213 | va_end(val); | |
214 | ||
215 | /* | |
216 | * Reserve numerics 000-099 for server-client connections where the client | |
217 | * is local to the server. If any server is passed a numeric in this range | |
218 | * from another server then it is remapped to 100-199. -avalon | |
219 | * | |
220 | * from ircu ircd/numeric.h | |
221 | */ | |
222 | /* just in case we are about to send a numeric in the reserved range, remap it */ | |
223 | if (numeric < 100) | |
224 | numeric =+ 100; | |
225 | ||
226 | irc_send("%s %d %s %s", sourcenum, numeric, targetnum, buf); | |
227 | } | |
228 | ||
229 | ||
230 | ||
231 | /* send_snotice | |
232 | * | |
233 | * send server notice to user | |
234 | * | |
235 | */ | |
236 | void send_snotice(char *targetnum, char *pattern, ...) { | |
237 | char buf[BUFSIZE]; | |
238 | va_list val; | |
239 | ||
240 | va_start(val, pattern); | |
241 | vsnprintf(buf, sizeof(buf), pattern, val); | |
242 | va_end(val); | |
243 | ||
244 | irc_send("%s %s %s :%s", getmynumeric(), TOK_NOTICE, targetnum, buf); | |
245 | } |