1 |
michael |
5052 |
/* |
2 |
michael |
5350 |
* Copyright (c) 2002-2003 Erik Fears |
3 |
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* Copyright (c) 2014-2015 ircd-hybrid development team |
4 |
michael |
5052 |
* |
5 |
michael |
5350 |
* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
7 |
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* the Free Software Foundation; either version 2 of the License, or |
8 |
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* (at your option) any later version. |
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michael |
5052 |
* |
10 |
michael |
5350 |
* This program is distributed in the hope that it will be useful, |
11 |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
14 |
michael |
5052 |
* |
15 |
michael |
5350 |
* You should have received a copy of the GNU General Public License |
16 |
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* along with this program; if not, write to the Free Software |
17 |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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* USA |
19 |
michael |
5052 |
*/ |
20 |
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21 |
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#include "setup.h" |
22 |
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23 |
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#include <stdio.h> |
24 |
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#include <unistd.h> |
25 |
michael |
5206 |
#include <stdlib.h> |
26 |
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#include <string.h> |
27 |
michael |
5052 |
#include <sys/types.h> |
28 |
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#include <sys/socket.h> |
29 |
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#include <netinet/in.h> |
30 |
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#include <arpa/inet.h> |
31 |
michael |
5225 |
#include <poll.h> |
32 |
michael |
5267 |
#include <sys/time.h> |
33 |
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#include <time.h> |
34 |
michael |
5052 |
|
35 |
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#include <errno.h> |
36 |
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#include <stdarg.h> |
37 |
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#include <regex.h> |
38 |
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39 |
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#include "config.h" |
40 |
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#include "irc.h" |
41 |
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#include "log.h" |
42 |
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#include "opercmd.h" |
43 |
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#include "scan.h" |
44 |
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#include "dnsbl.h" |
45 |
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#include "stats.h" |
46 |
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#include "options.h" |
47 |
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#include "match.h" |
48 |
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#include "compat.h" |
49 |
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#include "negcache.h" |
50 |
michael |
5336 |
#include "memory.h" |
51 |
michael |
5052 |
#include "main.h" |
52 |
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53 |
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54 |
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static void irc_init(void); |
55 |
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static void irc_connect(void); |
56 |
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static void irc_reconnect(void); |
57 |
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static void irc_read(void); |
58 |
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static void irc_parse(void); |
59 |
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60 |
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static struct ChannelConf *get_channel(const char *); |
61 |
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62 |
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static struct UserInfo *userinfo_create(char *); |
63 |
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static void userinfo_free(struct UserInfo *source); |
64 |
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65 |
michael |
5337 |
static void m_ping(char *[], unsigned int, char *, const struct UserInfo *); |
66 |
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static void m_invite(char *[], unsigned int, char *, const struct UserInfo *); |
67 |
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static void m_privmsg(char *[], unsigned int, char *, const struct UserInfo *); |
68 |
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static void m_ctcp(char *[], unsigned int, char *, const struct UserInfo *); |
69 |
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static void m_notice(char *[], unsigned int, char *, const struct UserInfo *); |
70 |
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static void m_perform(char *[], unsigned int, char *, const struct UserInfo *); |
71 |
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static void m_userhost(char *[], unsigned int, char *, const struct UserInfo *); |
72 |
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static void m_cannot_join(char *[], unsigned int, char *, const struct UserInfo *); |
73 |
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static void m_kill(char *[], unsigned int, char *, const struct UserInfo *); |
74 |
michael |
5052 |
|
75 |
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76 |
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/* |
77 |
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* Certain variables we don't want to allocate memory for over and over |
78 |
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* again so global scope is given. |
79 |
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*/ |
80 |
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|
81 |
michael |
5130 |
static char IRC_RAW[MSGLENMAX]; /* Buffer to read data into */ |
82 |
michael |
5125 |
static unsigned int IRC_RAW_LEN = 0; /* Position of IRC_RAW */ |
83 |
michael |
5130 |
static int IRC_FD = 0; /* File descriptor for IRC client */ |
84 |
michael |
5052 |
|
85 |
michael |
5312 |
static struct sockaddr_in IRC_SVR; /* Sock Address Struct for IRC server */ |
86 |
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static struct in_addr IRC_LOCAL; /* Sock Address Struct for Bind */ |
87 |
michael |
5052 |
|
88 |
michael |
5130 |
static time_t IRC_LAST = 0; /* Last full line of data from irc server*/ |
89 |
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static time_t IRC_LASTRECONNECT = 0; /* Time of last reconnection */ |
90 |
michael |
5052 |
|
91 |
michael |
5114 |
/* |
92 |
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* Table should be ordered with most occuring (or priority) |
93 |
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* commands at the top of the list. |
94 |
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*/ |
95 |
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static struct CommandHash COMMAND_TABLE[] = |
96 |
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{ |
97 |
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{ "NOTICE", m_notice }, |
98 |
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{ "PRIVMSG", m_privmsg }, |
99 |
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{ "PING", m_ping }, |
100 |
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{ "INVITE", m_invite }, |
101 |
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{ "001", m_perform }, |
102 |
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{ "302", m_userhost }, |
103 |
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{ "471", m_cannot_join }, |
104 |
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{ "473", m_cannot_join }, |
105 |
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{ "474", m_cannot_join }, |
106 |
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{ "475", m_cannot_join }, |
107 |
michael |
5192 |
{ "KILL", m_kill }, |
108 |
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{ NULL, NULL } |
109 |
michael |
5114 |
}; |
110 |
michael |
5052 |
|
111 |
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/* irc_cycle |
112 |
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* |
113 |
michael |
5069 |
* Pass control to the IRC portion of HOPM to handle any awaiting IRC events. |
114 |
michael |
5052 |
* |
115 |
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* Parameters: |
116 |
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* None |
117 |
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* |
118 |
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* Return: |
119 |
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* None |
120 |
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*/ |
121 |
michael |
5114 |
void |
122 |
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irc_cycle(void) |
123 |
michael |
5052 |
{ |
124 |
michael |
5225 |
static struct pollfd pfd; |
125 |
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126 |
michael |
5114 |
if (IRC_FD <= 0) |
127 |
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{ |
128 |
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/* Initialise negative cache. */ |
129 |
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if (OptionsItem->negcache > 0) |
130 |
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nc_init(&nc_head); |
131 |
michael |
5052 |
|
132 |
michael |
5114 |
/* Resolve remote host. */ |
133 |
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irc_init(); |
134 |
michael |
5052 |
|
135 |
michael |
5114 |
/* Connect to remote host. */ |
136 |
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irc_connect(); |
137 |
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return; /* In case connect() immediately failed */ |
138 |
michael |
5052 |
} |
139 |
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140 |
michael |
5225 |
pfd.fd = IRC_FD; |
141 |
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pfd.events = POLLIN; |
142 |
michael |
5052 |
|
143 |
michael |
5225 |
/* Block .025 seconds to avoid excessive CPU use on poll(). */ |
144 |
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switch (poll(&pfd, 1, 25)) |
145 |
michael |
5114 |
{ |
146 |
michael |
5225 |
case 0: |
147 |
michael |
5114 |
case -1: |
148 |
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break; |
149 |
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default: |
150 |
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/* Check if IRC data is available. */ |
151 |
michael |
5225 |
if (pfd.revents & POLLIN) |
152 |
michael |
5114 |
irc_read(); |
153 |
michael |
5052 |
|
154 |
michael |
5114 |
break; |
155 |
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} |
156 |
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} |
157 |
michael |
5052 |
|
158 |
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/* irc_init |
159 |
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* |
160 |
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* Resolve IRC host and perform other initialization. |
161 |
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* |
162 |
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* Parameters: |
163 |
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* None |
164 |
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* |
165 |
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* Return: |
166 |
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* None |
167 |
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*/ |
168 |
michael |
5114 |
static void |
169 |
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irc_init(void) |
170 |
michael |
5052 |
{ |
171 |
michael |
5312 |
struct sockaddr_in bsaddr; |
172 |
michael |
5114 |
struct in_addr *irc_host; |
173 |
michael |
5052 |
|
174 |
michael |
5114 |
if (IRC_FD) |
175 |
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close(IRC_FD); |
176 |
michael |
5052 |
|
177 |
michael |
5114 |
memset(&IRC_SVR, 0, sizeof(IRC_SVR)); |
178 |
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memset(&IRC_LOCAL, 0, sizeof(IRC_LOCAL)); |
179 |
michael |
5312 |
memset(&bsaddr, 0, sizeof(bsaddr)); |
180 |
michael |
5052 |
|
181 |
michael |
5114 |
/* Resolve IRC host. */ |
182 |
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if ((irc_host = firedns_resolveip4(IRCItem->server)) == NULL) |
183 |
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{ |
184 |
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log_printf("IRC -> firedns_resolveip4(\"%s\"): %s", IRCItem->server, |
185 |
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firedns_strerror(fdns_errno)); |
186 |
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exit(EXIT_FAILURE); |
187 |
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} |
188 |
michael |
5052 |
|
189 |
michael |
5312 |
IRC_SVR.sin_family = AF_INET; |
190 |
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IRC_SVR.sin_port = htons(IRCItem->port); |
191 |
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IRC_SVR.sin_addr = *irc_host; |
192 |
michael |
5052 |
|
193 |
michael |
5312 |
if (IRC_SVR.sin_addr.s_addr == INADDR_NONE) |
194 |
michael |
5114 |
{ |
195 |
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log_printf("IRC -> Unknown error resolving remote host (%s)", |
196 |
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IRCItem->server); |
197 |
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exit(EXIT_FAILURE); |
198 |
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} |
199 |
michael |
5052 |
|
200 |
michael |
5114 |
/* Request file desc for IRC client socket */ |
201 |
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IRC_FD = socket(AF_INET, SOCK_STREAM, 0); |
202 |
michael |
5052 |
|
203 |
michael |
5114 |
if (IRC_FD == -1) |
204 |
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{ |
205 |
michael |
5251 |
log_printf("IRC -> socket(): error creating socket: %s", strerror(errno)); |
206 |
michael |
5116 |
exit(EXIT_FAILURE); |
207 |
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} |
208 |
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209 |
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/* Bind */ |
210 |
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if (!EmptyString(IRCItem->vhost)) |
211 |
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{ |
212 |
michael |
5312 |
if (inet_pton(AF_INET, IRCItem->vhost, &IRC_LOCAL.s_addr) <= 0) |
213 |
michael |
5116 |
{ |
214 |
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log_printf("IRC -> bind(): %s is an invalid address", IRCItem->vhost); |
215 |
michael |
5052 |
exit(EXIT_FAILURE); |
216 |
michael |
5116 |
} |
217 |
michael |
5052 |
|
218 |
michael |
5312 |
bsaddr.sin_addr.s_addr = IRC_LOCAL.s_addr; |
219 |
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bsaddr.sin_family = AF_INET; |
220 |
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bsaddr.sin_port = htons(0); |
221 |
michael |
5114 |
|
222 |
michael |
5359 |
if (bind(IRC_FD, (struct sockaddr *)&bsaddr, sizeof(bsaddr))) |
223 |
michael |
5116 |
{ |
224 |
michael |
5251 |
log_printf("IRC -> bind(): error binding to %s: %s", IRCItem->vhost, strerror(errno)); |
225 |
michael |
5116 |
exit(EXIT_FAILURE); |
226 |
michael |
5114 |
} |
227 |
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} |
228 |
michael |
5052 |
} |
229 |
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230 |
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/* irc_send |
231 |
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* |
232 |
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* Send data to remote IRC host. |
233 |
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* |
234 |
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* Parameters: |
235 |
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* data: Format of data to send |
236 |
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* ...: varargs to format with |
237 |
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* |
238 |
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* Return: NONE |
239 |
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*/ |
240 |
michael |
5114 |
void |
241 |
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irc_send(const char *data, ...) |
242 |
michael |
5052 |
{ |
243 |
michael |
5114 |
va_list arglist; |
244 |
michael |
5194 |
char buf[MSGLENMAX]; |
245 |
michael |
5280 |
size_t len = 0; |
246 |
michael |
5052 |
|
247 |
michael |
5114 |
va_start(arglist, data); |
248 |
michael |
5194 |
len = vsnprintf(buf, sizeof(buf), data, arglist); |
249 |
michael |
5114 |
va_end(arglist); |
250 |
michael |
5052 |
|
251 |
michael |
5114 |
if (OPT_DEBUG >= 2) |
252 |
michael |
5194 |
log_printf("IRC SEND -> %s", buf); |
253 |
michael |
5052 |
|
254 |
michael |
5194 |
if (len > 510) |
255 |
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len = 510; |
256 |
michael |
5052 |
|
257 |
michael |
5194 |
buf[len++] = '\r'; |
258 |
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buf[len++] = '\n'; |
259 |
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|
260 |
|
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if (send(IRC_FD, buf, len, 0) == -1) |
261 |
michael |
5114 |
{ |
262 |
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/* Return of -1 indicates error sending data; we reconnect. */ |
263 |
michael |
5252 |
log_printf("IRC -> Error sending data to server: %s", strerror(errno)); |
264 |
michael |
5114 |
irc_reconnect(); |
265 |
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} |
266 |
michael |
5052 |
} |
267 |
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|
268 |
|
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/* irc_send |
269 |
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* |
270 |
|
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* Send privmsg to all channels. |
271 |
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* |
272 |
|
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* Parameters: |
273 |
|
|
* data: Format of data to send |
274 |
|
|
* ...: varargs to format with |
275 |
|
|
* |
276 |
|
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* Return: NONE |
277 |
|
|
*/ |
278 |
michael |
5114 |
void |
279 |
|
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irc_send_channels(const char *data, ...) |
280 |
michael |
5052 |
{ |
281 |
michael |
5114 |
const node_t *node; |
282 |
|
|
va_list arglist; |
283 |
|
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char buf[MSGLENMAX]; |
284 |
michael |
5052 |
|
285 |
michael |
5114 |
va_start(arglist, data); |
286 |
|
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vsnprintf(buf, sizeof(buf), data, arglist); |
287 |
|
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va_end(arglist); |
288 |
michael |
5052 |
|
289 |
michael |
5114 |
LIST_FOREACH(node, IRCItem->channels->head) |
290 |
|
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{ |
291 |
|
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const struct ChannelConf *chan = node->data; |
292 |
michael |
5106 |
|
293 |
michael |
5114 |
irc_send("PRIVMSG %s :%s", chan->name, buf); |
294 |
|
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} |
295 |
michael |
5052 |
} |
296 |
|
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|
297 |
|
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/* irc_connect |
298 |
|
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* |
299 |
|
|
* Connect to IRC server. |
300 |
|
|
* XXX: FD allocation done here |
301 |
|
|
* |
302 |
|
|
* Parameters: NONE |
303 |
|
|
* Return: NONE |
304 |
|
|
*/ |
305 |
michael |
5114 |
static void |
306 |
|
|
irc_connect(void) |
307 |
michael |
5052 |
{ |
308 |
michael |
5114 |
/* Connect to IRC server as client. */ |
309 |
|
|
if (connect(IRC_FD, (struct sockaddr *)&IRC_SVR, sizeof(IRC_SVR)) == -1) |
310 |
|
|
{ |
311 |
|
|
switch (errno) |
312 |
|
|
{ |
313 |
|
|
case EISCONN: |
314 |
|
|
/* Already connected */ |
315 |
|
|
return; |
316 |
|
|
case ECONNREFUSED: |
317 |
|
|
log_printf("IRC -> connect(): Connection refused by (%s)", |
318 |
|
|
IRCItem->server); |
319 |
|
|
break; |
320 |
|
|
case ETIMEDOUT: |
321 |
|
|
log_printf("IRC -> connect(): Timed out connecting to (%s)", |
322 |
|
|
IRCItem->server); |
323 |
|
|
break; |
324 |
|
|
case ENETUNREACH: |
325 |
|
|
log_printf("IRC -> connect(): Network unreachable"); |
326 |
|
|
break; |
327 |
|
|
case EALREADY: |
328 |
|
|
/* Previous attempt not complete */ |
329 |
|
|
return; |
330 |
|
|
default: |
331 |
|
|
log_printf("IRC -> connect(): Unknown error connecting to (%s)", |
332 |
|
|
IRCItem->server); |
333 |
michael |
5052 |
|
334 |
michael |
5114 |
if (OPT_DEBUG >= 1) |
335 |
|
|
log_printf("%s", strerror(errno)); |
336 |
|
|
} |
337 |
michael |
5052 |
|
338 |
michael |
5114 |
/* Try to connect again */ |
339 |
|
|
irc_reconnect(); |
340 |
|
|
return; |
341 |
|
|
} |
342 |
michael |
5052 |
|
343 |
michael |
5114 |
irc_send("NICK %s", IRCItem->nick); |
344 |
michael |
5052 |
|
345 |
michael |
5114 |
if (!EmptyString(IRCItem->password)) |
346 |
|
|
irc_send("PASS %s", IRCItem->password); |
347 |
michael |
5052 |
|
348 |
michael |
5114 |
irc_send("USER %s %s %s :%s", |
349 |
|
|
IRCItem->username, |
350 |
|
|
IRCItem->username, |
351 |
|
|
IRCItem->username, |
352 |
|
|
IRCItem->realname); |
353 |
|
|
time(&IRC_LAST); |
354 |
michael |
5052 |
} |
355 |
|
|
|
356 |
|
|
/* irc_reconnect |
357 |
|
|
* |
358 |
|
|
* Close connection to IRC server. |
359 |
|
|
* |
360 |
|
|
* Parameters: NONE |
361 |
|
|
* |
362 |
|
|
* Return: NONE |
363 |
|
|
*/ |
364 |
michael |
5114 |
static void |
365 |
|
|
irc_reconnect(void) |
366 |
michael |
5052 |
{ |
367 |
michael |
5114 |
time_t present; |
368 |
michael |
5052 |
|
369 |
michael |
5114 |
time(&present); |
370 |
michael |
5052 |
|
371 |
michael |
5114 |
/* Only try to reconnect every RECONNECT_INTERVAL seconds */ |
372 |
|
|
if ((present - IRC_LASTRECONNECT) < RECONNECTINTERVAL) |
373 |
|
|
{ |
374 |
|
|
/* Sleep to avoid excessive CPU */ |
375 |
|
|
sleep(1); |
376 |
|
|
return; |
377 |
|
|
} |
378 |
michael |
5052 |
|
379 |
michael |
5114 |
time(&IRC_LASTRECONNECT); |
380 |
michael |
5052 |
|
381 |
michael |
5114 |
if (IRC_FD > 0) |
382 |
|
|
close(IRC_FD); |
383 |
michael |
5052 |
|
384 |
michael |
5114 |
/* Set IRC_FD 0 for reconnection on next irc_cycle(). */ |
385 |
|
|
IRC_FD = 0; |
386 |
|
|
|
387 |
|
|
log_printf("IRC -> Connection to (%s) failed, reconnecting.", IRCItem->server); |
388 |
michael |
5052 |
} |
389 |
|
|
|
390 |
|
|
/* irc_read |
391 |
|
|
* |
392 |
|
|
* irc_read is called my irc_cycle when new data is ready to be |
393 |
michael |
5114 |
* read from the irc server. |
394 |
michael |
5052 |
* |
395 |
|
|
* Parameters: NONE |
396 |
|
|
* Return: NONE |
397 |
|
|
*/ |
398 |
michael |
5114 |
static void |
399 |
|
|
irc_read(void) |
400 |
michael |
5052 |
{ |
401 |
michael |
5116 |
int len; |
402 |
|
|
char c; |
403 |
michael |
5052 |
|
404 |
michael |
5116 |
while ((len = read(IRC_FD, &c, 1)) > 0) |
405 |
|
|
{ |
406 |
|
|
if (c == '\r') |
407 |
|
|
continue; |
408 |
michael |
5052 |
|
409 |
michael |
5116 |
if (c == '\n') |
410 |
|
|
{ |
411 |
|
|
/* Null string. */ |
412 |
|
|
IRC_RAW[IRC_RAW_LEN] = '\0'; |
413 |
michael |
5052 |
|
414 |
michael |
5116 |
/* Parse line. */ |
415 |
|
|
irc_parse(); |
416 |
michael |
5052 |
|
417 |
michael |
5116 |
/* Reset counter. */ |
418 |
michael |
5052 |
IRC_RAW_LEN = 0; |
419 |
michael |
5116 |
break; |
420 |
|
|
} |
421 |
|
|
|
422 |
michael |
5124 |
if (c != '\0') |
423 |
michael |
5116 |
IRC_RAW[IRC_RAW_LEN++] = c; |
424 |
|
|
} |
425 |
|
|
|
426 |
|
|
if ((len <= 0) && (errno != EAGAIN)) |
427 |
|
|
{ |
428 |
|
|
if (OPT_DEBUG >= 2) |
429 |
|
|
log_printf("irc_read -> errno=%d len=%d", errno, len); |
430 |
|
|
|
431 |
|
|
irc_reconnect(); |
432 |
|
|
IRC_RAW_LEN = 0; |
433 |
|
|
return; |
434 |
|
|
} |
435 |
michael |
5052 |
} |
436 |
|
|
|
437 |
|
|
/* irc_parse |
438 |
|
|
* |
439 |
|
|
* irc_parse is called by irc_read when a full line of data |
440 |
|
|
* is ready to be parsed. |
441 |
|
|
* |
442 |
|
|
* Parameters: NONE |
443 |
|
|
* Return: NONE |
444 |
|
|
*/ |
445 |
michael |
5114 |
static void |
446 |
|
|
irc_parse(void) |
447 |
michael |
5052 |
{ |
448 |
michael |
5116 |
struct UserInfo *source_p; |
449 |
|
|
char *pos; |
450 |
michael |
5052 |
|
451 |
michael |
5116 |
/* |
452 |
|
|
* parv stores the parsed token, parc is the count of the parsed |
453 |
|
|
* tokens |
454 |
|
|
* |
455 |
|
|
* parv[0] is ALWAYS the source, and is the server name of the source |
456 |
|
|
* did not exist |
457 |
michael |
5052 |
*/ |
458 |
michael |
5192 |
char *parv[17]; |
459 |
|
|
unsigned int parc = 1; |
460 |
|
|
char msg[MSGLENMAX]; /* Temporarily stores IRC msg to pass to handlers */ |
461 |
michael |
5052 |
|
462 |
michael |
5125 |
if (IRC_RAW_LEN == 0) |
463 |
michael |
5116 |
return; |
464 |
michael |
5052 |
|
465 |
michael |
5116 |
if (OPT_DEBUG >= 2) |
466 |
|
|
log_printf("IRC READ -> %s", IRC_RAW); |
467 |
michael |
5052 |
|
468 |
michael |
5116 |
time(&IRC_LAST); |
469 |
michael |
5052 |
|
470 |
michael |
5116 |
/* Store a copy of IRC_RAW for the handlers (for functions that need PROOF) */ |
471 |
|
|
strlcpy(msg, IRC_RAW, sizeof(msg)); |
472 |
michael |
5052 |
|
473 |
michael |
5116 |
/* parv[0] is always the source */ |
474 |
|
|
if (IRC_RAW[0] == ':') |
475 |
|
|
parv[0] = IRC_RAW + 1; |
476 |
|
|
else |
477 |
|
|
{ |
478 |
|
|
parv[0] = IRCItem->server; |
479 |
|
|
parv[parc++] = IRC_RAW; |
480 |
|
|
} |
481 |
michael |
5052 |
|
482 |
michael |
5116 |
pos = IRC_RAW; |
483 |
michael |
5052 |
|
484 |
michael |
5116 |
while ((pos = strchr(pos, ' ')) && parc <= 17) |
485 |
|
|
{ |
486 |
|
|
/* Avoid excessive spaces and end of IRC_RAW */ |
487 |
michael |
5341 |
if (*(pos + 1) == ' ' || *(pos + 1) == '\0') |
488 |
michael |
5116 |
{ |
489 |
|
|
pos++; |
490 |
|
|
continue; |
491 |
|
|
} |
492 |
michael |
5052 |
|
493 |
michael |
5116 |
/* Anything after a : is considered the final string of the message */ |
494 |
|
|
if (*(pos + 1) == ':') |
495 |
|
|
{ |
496 |
|
|
parv[parc++] = pos + 2; |
497 |
michael |
5052 |
*pos = '\0'; |
498 |
michael |
5116 |
break; |
499 |
|
|
} |
500 |
michael |
5052 |
|
501 |
michael |
5116 |
/* |
502 |
|
|
* Set the next parv at this position and replace the space with a |
503 |
|
|
* \0 for the previous parv |
504 |
|
|
*/ |
505 |
|
|
parv[parc++] = pos + 1; |
506 |
|
|
*pos = '\0'; |
507 |
|
|
pos++; |
508 |
|
|
} |
509 |
michael |
5052 |
|
510 |
michael |
5116 |
/* Generate a UserInfo struct from the source */ |
511 |
|
|
source_p = userinfo_create(parv[0]); |
512 |
michael |
5052 |
|
513 |
michael |
5116 |
/* |
514 |
|
|
* Determine which command this is from the command table |
515 |
|
|
* and let the handler for that command take control |
516 |
|
|
*/ |
517 |
michael |
5192 |
for (const struct CommandHash *cmd = COMMAND_TABLE; cmd->command; ++cmd) |
518 |
michael |
5116 |
{ |
519 |
michael |
5192 |
if (strcasecmp(cmd->command, parv[1]) == 0) |
520 |
michael |
5116 |
{ |
521 |
michael |
5192 |
cmd->handler(parv, parc, msg, source_p); |
522 |
michael |
5116 |
break; |
523 |
|
|
} |
524 |
|
|
} |
525 |
michael |
5052 |
|
526 |
michael |
5116 |
userinfo_free(source_p); |
527 |
michael |
5052 |
} |
528 |
|
|
|
529 |
|
|
/* irc_timer |
530 |
|
|
* |
531 |
|
|
* Functions to be performed every ~seconds. |
532 |
|
|
* |
533 |
|
|
* Parameters: NONE |
534 |
|
|
* Return: NONE |
535 |
|
|
*/ |
536 |
michael |
5114 |
void |
537 |
|
|
irc_timer(void) |
538 |
michael |
5052 |
{ |
539 |
michael |
5114 |
time_t present, delta; |
540 |
michael |
5052 |
|
541 |
michael |
5114 |
time(&present); |
542 |
michael |
5052 |
|
543 |
michael |
5114 |
delta = present - IRC_LAST; |
544 |
michael |
5052 |
|
545 |
michael |
5197 |
/* No data in IRCItem->readtimeout seconds */ |
546 |
|
|
if (delta >= IRCItem->readtimeout) |
547 |
michael |
5114 |
{ |
548 |
|
|
log_printf("IRC -> Timeout awaiting data from server."); |
549 |
|
|
irc_reconnect(); |
550 |
michael |
5052 |
|
551 |
michael |
5321 |
/* Make sure we don't do this again for a while */ |
552 |
michael |
5114 |
time(&IRC_LAST); |
553 |
|
|
} |
554 |
michael |
5197 |
else if (delta >= IRCItem->readtimeout / 2) |
555 |
michael |
5114 |
{ |
556 |
|
|
/* |
557 |
michael |
5321 |
* Generate some data so high ping times don't cause uneeded |
558 |
michael |
5114 |
* reconnections |
559 |
|
|
*/ |
560 |
|
|
irc_send("PING :HOPM"); |
561 |
|
|
} |
562 |
michael |
5052 |
} |
563 |
|
|
|
564 |
|
|
/* get_channel |
565 |
|
|
* |
566 |
|
|
* Check if a channel is defined in our conf. If so return |
567 |
|
|
* a pointer to it. |
568 |
|
|
* |
569 |
|
|
* Parameters: |
570 |
|
|
* channel: channel to search conf for |
571 |
|
|
* |
572 |
|
|
* Return: Pointer to ChannelConf containing the channel |
573 |
|
|
*/ |
574 |
michael |
5114 |
static struct ChannelConf * |
575 |
|
|
get_channel(const char *channel) |
576 |
michael |
5052 |
{ |
577 |
michael |
5114 |
node_t *node; |
578 |
michael |
5052 |
|
579 |
michael |
5114 |
LIST_FOREACH(node, IRCItem->channels->head) |
580 |
|
|
{ |
581 |
michael |
5116 |
struct ChannelConf *item = node->data; |
582 |
michael |
5052 |
|
583 |
michael |
5114 |
if (strcasecmp(item->name, channel) == 0) |
584 |
|
|
return item; |
585 |
|
|
} |
586 |
michael |
5052 |
|
587 |
michael |
5114 |
return NULL; |
588 |
michael |
5052 |
} |
589 |
|
|
|
590 |
|
|
/* userinfo_create |
591 |
|
|
* |
592 |
|
|
* Parse a nick!user@host into a UserInfo struct |
593 |
|
|
* and return a pointer to the new struct. |
594 |
|
|
* |
595 |
|
|
* Parameters: |
596 |
|
|
* source: nick!user@host to parse |
597 |
|
|
* |
598 |
|
|
* Return: |
599 |
|
|
* pointer to new UserInfo struct, or NULL if parsing failed |
600 |
|
|
*/ |
601 |
michael |
5114 |
static struct UserInfo * |
602 |
|
|
userinfo_create(char *source) |
603 |
michael |
5052 |
{ |
604 |
michael |
5114 |
struct UserInfo *ret; |
605 |
|
|
char *nick; |
606 |
|
|
char *username; |
607 |
|
|
char *hostname; |
608 |
|
|
char *tmp; |
609 |
|
|
int i, len; |
610 |
michael |
5052 |
|
611 |
michael |
5114 |
nick = username = hostname = NULL; |
612 |
|
|
tmp = xstrdup(source); |
613 |
|
|
len = strlen(tmp); |
614 |
|
|
nick = tmp; |
615 |
michael |
5052 |
|
616 |
michael |
5114 |
for (i = 0; i < len; ++i) |
617 |
|
|
{ |
618 |
|
|
if (tmp[i] == '!') |
619 |
|
|
{ |
620 |
|
|
tmp[i] = '\0'; |
621 |
|
|
username = tmp + i + 1; |
622 |
|
|
} |
623 |
michael |
5052 |
|
624 |
michael |
5114 |
if (tmp[i] == '@') |
625 |
|
|
{ |
626 |
|
|
tmp[i] = '\0'; |
627 |
|
|
hostname = tmp + i + 1; |
628 |
|
|
} |
629 |
|
|
} |
630 |
michael |
5052 |
|
631 |
michael |
5114 |
if (nick == NULL || username == NULL || hostname == NULL) |
632 |
|
|
{ |
633 |
|
|
MyFree(tmp); |
634 |
|
|
return NULL; |
635 |
|
|
} |
636 |
michael |
5052 |
|
637 |
michael |
5275 |
ret = xcalloc(sizeof *ret); |
638 |
michael |
5114 |
ret->irc_nick = xstrdup(nick); |
639 |
|
|
ret->irc_username = xstrdup(username); |
640 |
|
|
ret->irc_hostname = xstrdup(hostname); |
641 |
michael |
5052 |
|
642 |
michael |
5114 |
MyFree(tmp); |
643 |
michael |
5052 |
|
644 |
michael |
5114 |
return ret; |
645 |
michael |
5052 |
}; |
646 |
|
|
|
647 |
|
|
/* userinfo_free |
648 |
|
|
* |
649 |
|
|
* Free a UserInfo struct created with userinfo_create. |
650 |
|
|
* |
651 |
|
|
* Parameters: |
652 |
|
|
* source: struct to free |
653 |
michael |
5114 |
* |
654 |
michael |
5052 |
* Return: None |
655 |
|
|
*/ |
656 |
michael |
5114 |
static void |
657 |
|
|
userinfo_free(struct UserInfo *source_p) |
658 |
michael |
5052 |
{ |
659 |
michael |
5114 |
if (source_p == NULL) |
660 |
|
|
return; |
661 |
michael |
5052 |
|
662 |
michael |
5114 |
MyFree(source_p->irc_nick); |
663 |
|
|
MyFree(source_p->irc_username); |
664 |
|
|
MyFree(source_p->irc_hostname); |
665 |
|
|
MyFree(source_p); |
666 |
michael |
5052 |
} |
667 |
|
|
|
668 |
|
|
/* m_perform |
669 |
|
|
* |
670 |
|
|
* actions to perform on IRC connection |
671 |
|
|
* |
672 |
|
|
* Parameters: |
673 |
|
|
* parv[0] = source |
674 |
|
|
* parv[1] = PING |
675 |
|
|
* parv[2] = PING TS/Package |
676 |
|
|
* |
677 |
|
|
* source_p: UserInfo struct of the source user, or NULL if |
678 |
|
|
* the source (parv[0]) is a server. |
679 |
|
|
*/ |
680 |
michael |
5114 |
static void |
681 |
michael |
5337 |
m_perform(char *parv[], unsigned int parc, char *msg, const struct UserInfo *notused) |
682 |
michael |
5052 |
{ |
683 |
michael |
5114 |
node_t *node; |
684 |
michael |
5052 |
|
685 |
michael |
5114 |
log_printf("IRC -> Connected to %s:%d", IRCItem->server, IRCItem->port); |
686 |
michael |
5052 |
|
687 |
michael |
5114 |
/* Identify to nickserv if needed */ |
688 |
|
|
if (!EmptyString(IRCItem->nickserv)) |
689 |
|
|
irc_send("%s", IRCItem->nickserv); |
690 |
michael |
5052 |
|
691 |
michael |
5114 |
/* Oper */ |
692 |
|
|
irc_send("OPER %s", IRCItem->oper); |
693 |
michael |
5052 |
|
694 |
michael |
5114 |
/* Set modes */ |
695 |
|
|
irc_send("MODE %s %s", IRCItem->nick, IRCItem->mode); |
696 |
michael |
5052 |
|
697 |
michael |
5114 |
/* Set Away */ |
698 |
michael |
5083 |
if (!EmptyString(IRCItem->away)) |
699 |
|
|
irc_send("AWAY :%s", IRCItem->away); |
700 |
michael |
5052 |
|
701 |
michael |
5114 |
/* Perform */ |
702 |
|
|
LIST_FOREACH(node, IRCItem->performs->head) |
703 |
|
|
irc_send("%s", node->data); |
704 |
michael |
5052 |
|
705 |
michael |
5114 |
/* Join all listed channels. */ |
706 |
|
|
LIST_FOREACH(node, IRCItem->channels->head) |
707 |
|
|
{ |
708 |
michael |
5280 |
const struct ChannelConf *channel = node->data; |
709 |
michael |
5052 |
|
710 |
michael |
5114 |
if (EmptyString(channel->name)) |
711 |
|
|
continue; |
712 |
michael |
5052 |
|
713 |
michael |
5114 |
if (!EmptyString(channel->key)) |
714 |
|
|
irc_send("JOIN %s %s", channel->name, channel->key); |
715 |
|
|
else |
716 |
|
|
irc_send("JOIN %s", channel->name); |
717 |
|
|
} |
718 |
michael |
5052 |
} |
719 |
|
|
|
720 |
|
|
/* m_ping |
721 |
|
|
* |
722 |
|
|
* parv[0] = source |
723 |
|
|
* parv[1] = PING |
724 |
|
|
* parv[2] = PING TS/Package |
725 |
|
|
* |
726 |
|
|
* source_p: UserInfo struct of the source user, or NULL if |
727 |
|
|
* the source (parv[0]) is a server. |
728 |
|
|
*/ |
729 |
michael |
5114 |
static void |
730 |
michael |
5337 |
m_ping(char *parv[], unsigned int parc, char *msg, const struct UserInfo *source_p) |
731 |
michael |
5052 |
{ |
732 |
michael |
5114 |
if (parc < 3) |
733 |
|
|
return; |
734 |
michael |
5052 |
|
735 |
michael |
5114 |
if (OPT_DEBUG >= 2) |
736 |
|
|
log_printf("IRC -> PING? PONG!"); |
737 |
michael |
5052 |
|
738 |
michael |
5114 |
irc_send("PONG %s", parv[2]); |
739 |
michael |
5052 |
} |
740 |
|
|
|
741 |
|
|
/* m_invite |
742 |
|
|
* |
743 |
|
|
* parv[0] = source |
744 |
|
|
* parv[1] = INVITE |
745 |
|
|
* parv[2] = target |
746 |
|
|
* parv[3] = channel |
747 |
|
|
* |
748 |
|
|
* source_p: UserInfo struct of the source user, or NULL if |
749 |
|
|
* the source (parv[0]) is a server. |
750 |
|
|
*/ |
751 |
michael |
5114 |
static void |
752 |
michael |
5337 |
m_invite(char *parv[], unsigned int parc, char *msg, const struct UserInfo *source_p) |
753 |
michael |
5052 |
{ |
754 |
michael |
5321 |
struct ChannelConf *channel = NULL; |
755 |
michael |
5052 |
|
756 |
michael |
5114 |
if (parc < 4) |
757 |
|
|
return; |
758 |
michael |
5052 |
|
759 |
michael |
5114 |
log_printf("IRC -> Invited to %s by %s", parv[3], parv[0]); |
760 |
michael |
5052 |
|
761 |
michael |
5114 |
if ((channel = get_channel(parv[3])) == NULL) |
762 |
|
|
return; |
763 |
|
|
|
764 |
|
|
irc_send("JOIN %s %s", channel->name, channel->key); |
765 |
michael |
5052 |
} |
766 |
|
|
|
767 |
|
|
/* m_privmsg |
768 |
|
|
* |
769 |
|
|
* parv[0] = source |
770 |
|
|
* parv[1] = PRIVMSG |
771 |
|
|
* parv[2] = target (channel or user) |
772 |
|
|
* parv[3] = message |
773 |
|
|
* |
774 |
|
|
* source_p: UserInfo struct of the source user, or NULL if |
775 |
|
|
* the source (parv[0]) is a server. |
776 |
|
|
*/ |
777 |
michael |
5114 |
static void |
778 |
michael |
5337 |
m_privmsg(char *parv[], unsigned int parc, char *msg, const struct UserInfo *source_p) |
779 |
michael |
5052 |
{ |
780 |
michael |
5321 |
struct ChannelConf *channel = NULL; |
781 |
michael |
5114 |
size_t nick_len; |
782 |
michael |
5052 |
|
783 |
michael |
5114 |
if (source_p == NULL) |
784 |
|
|
return; |
785 |
michael |
5052 |
|
786 |
michael |
5114 |
if (parc < 4) |
787 |
|
|
return; |
788 |
michael |
5052 |
|
789 |
michael |
5114 |
/* CTCP */ |
790 |
|
|
if (parv[3][0] == '\001') |
791 |
|
|
m_ctcp(parv, parc, msg, source_p); |
792 |
michael |
5052 |
|
793 |
michael |
5114 |
/* Only interested in privmsg to channels */ |
794 |
|
|
if (parv[2][0] != '#' && parv[2][0] != '&') |
795 |
|
|
return; |
796 |
michael |
5052 |
|
797 |
michael |
5114 |
/* Get a target */ |
798 |
|
|
if ((channel = get_channel(parv[2])) == NULL) |
799 |
|
|
return; |
800 |
michael |
5052 |
|
801 |
michael |
5114 |
/* Find a suitable length to compare with */ |
802 |
|
|
nick_len = strcspn(parv[3], " :,"); |
803 |
michael |
5052 |
|
804 |
michael |
5114 |
if (nick_len < 3 && strlen(IRCItem->nick) >= 3) |
805 |
|
|
nick_len = 3; |
806 |
michael |
5052 |
|
807 |
michael |
5114 |
/* message is a command */ |
808 |
|
|
if (strncasecmp(parv[3], IRCItem->nick, nick_len) == 0 || |
809 |
|
|
strncasecmp(parv[3], "!all", 4) == 0) |
810 |
|
|
{ |
811 |
|
|
/* XXX command_parse will alter parv[3]. */ |
812 |
michael |
5355 |
command_parse(parv[3], channel, source_p); |
813 |
michael |
5114 |
} |
814 |
|
|
} |
815 |
michael |
5052 |
|
816 |
|
|
/* m_ctcp |
817 |
|
|
* parv[0] = source |
818 |
|
|
* parv[1] = PRIVMSG |
819 |
|
|
* parv[2] = target (channel or user) |
820 |
|
|
* parv[3] = message |
821 |
|
|
* |
822 |
|
|
* source_p: UserInfo struct of the source user, or NULL if |
823 |
|
|
* the source (parv[0]) is a server. |
824 |
|
|
* |
825 |
|
|
*/ |
826 |
michael |
5114 |
static void |
827 |
michael |
5337 |
m_ctcp(char *parv[], unsigned int parc, char *msg, const struct UserInfo *source_p) |
828 |
michael |
5052 |
{ |
829 |
michael |
5084 |
if (strncasecmp(parv[3], "\001VERSION\001", 9) == 0) |
830 |
|
|
irc_send("NOTICE %s :\001VERSION Hybrid Open Proxy Monitor %s\001", |
831 |
|
|
source_p->irc_nick, VERSION); |
832 |
michael |
5052 |
} |
833 |
|
|
|
834 |
|
|
/* m_notice |
835 |
|
|
* |
836 |
|
|
* parv[0] = source |
837 |
|
|
* parv[1] = NOTICE |
838 |
|
|
* parv[2] = target |
839 |
|
|
* parv[3] = message |
840 |
|
|
* |
841 |
|
|
* |
842 |
|
|
* source_p: UserInfo struct of the source user, or NULL if |
843 |
|
|
* the source (parv[0]) is a server. |
844 |
|
|
* |
845 |
|
|
*/ |
846 |
michael |
5114 |
static void |
847 |
michael |
5337 |
m_notice(char *parv[], unsigned int parc, char *msg, const struct UserInfo *source_p) |
848 |
michael |
5052 |
{ |
849 |
michael |
5114 |
static regex_t *preg = NULL; |
850 |
|
|
regmatch_t pmatch[5]; |
851 |
michael |
5280 |
int errnum; |
852 |
michael |
5337 |
const char *user[4]; |
853 |
michael |
5052 |
|
854 |
michael |
5114 |
/* Not interested in notices from users */ |
855 |
|
|
if (source_p) |
856 |
|
|
return; |
857 |
michael |
5052 |
|
858 |
michael |
5321 |
if (parc < 4) |
859 |
|
|
return; |
860 |
|
|
|
861 |
michael |
5114 |
/* Compile the regular expression if it has not been already */ |
862 |
|
|
if (preg == NULL) |
863 |
|
|
{ |
864 |
michael |
5275 |
preg = xcalloc(sizeof *preg); |
865 |
michael |
5052 |
|
866 |
michael |
5114 |
if ((errnum = regcomp(preg, IRCItem->connregex, REG_ICASE | REG_EXTENDED))) |
867 |
|
|
{ |
868 |
michael |
5289 |
char errmsg[256]; |
869 |
|
|
|
870 |
|
|
regerror(errnum, preg, errmsg, sizeof(errmsg)); |
871 |
michael |
5114 |
log_printf("IRC REGEX -> Error when compiling regular expression"); |
872 |
|
|
log_printf("IRC REGEX -> %s", errmsg); |
873 |
michael |
5052 |
|
874 |
michael |
5114 |
MyFree(preg); |
875 |
|
|
preg = NULL; |
876 |
michael |
5052 |
return; |
877 |
michael |
5114 |
} |
878 |
|
|
} |
879 |
michael |
5052 |
|
880 |
michael |
5114 |
/* Match the expression against the possible connection notice */ |
881 |
|
|
if (regexec(preg, parv[3], 5, pmatch, 0)) |
882 |
|
|
return; |
883 |
michael |
5052 |
|
884 |
michael |
5114 |
if (OPT_DEBUG > 0) |
885 |
|
|
log_printf("IRC REGEX -> Regular expression caught connection notice. Parsing."); |
886 |
michael |
5052 |
|
887 |
michael |
5114 |
if (pmatch[4].rm_so == -1) |
888 |
|
|
{ |
889 |
|
|
log_printf("IRC REGEX -> pmatch[4].rm_so is -1 while parsing??? Aborting."); |
890 |
|
|
return; |
891 |
|
|
} |
892 |
michael |
5052 |
|
893 |
michael |
5114 |
/* |
894 |
|
|
* Offsets for data in the connection notice: |
895 |
|
|
* |
896 |
|
|
* NICKNAME: pmatch[1].rm_so TO pmatch[1].rm_eo |
897 |
|
|
* USERNAME: pmatch[2].rm_so TO pmatch[2].rm_eo |
898 |
|
|
* HOSTNAME: pmatch[3].rm_so TO pmatch[3].rm_eo |
899 |
|
|
* IP : pmatch[4].rm_so TO pmatch[4].rm_eo |
900 |
|
|
*/ |
901 |
michael |
5280 |
for (unsigned int i = 0; i < 4; ++i) |
902 |
michael |
5114 |
{ |
903 |
|
|
user[i] = (parv[3] + pmatch[i + 1].rm_so); |
904 |
|
|
*(parv[3] + pmatch[i + 1].rm_eo) = '\0'; |
905 |
|
|
} |
906 |
michael |
5052 |
|
907 |
michael |
5114 |
if (OPT_DEBUG > 0) |
908 |
|
|
log_printf("IRC REGEX -> Parsed %s!%s@%s [%s] from connection notice.", |
909 |
|
|
user[0], user[1], user[2], user[3]); |
910 |
michael |
5052 |
|
911 |
michael |
5114 |
/*FIXME (reminder) In the case of any rehash to the regex, preg MUST be freed first. |
912 |
|
|
regfree(preg); |
913 |
|
|
*/ |
914 |
michael |
5052 |
|
915 |
michael |
5114 |
/* Pass this information off to scan.c */ |
916 |
|
|
scan_connect(user, msg); |
917 |
michael |
5052 |
|
918 |
michael |
5114 |
/* Record the connect for stats purposes */ |
919 |
|
|
stats_connect(); |
920 |
michael |
5052 |
} |
921 |
|
|
|
922 |
|
|
/* m_userhost |
923 |
|
|
* |
924 |
|
|
* parv[0] = source |
925 |
|
|
* parv[1] = USERHOST |
926 |
michael |
5069 |
* parv[2] = target (hopm) |
927 |
michael |
5052 |
* parv[3] = :nick=(flags)user@host |
928 |
|
|
* |
929 |
|
|
* |
930 |
|
|
* source_p: UserInfo struct of the source user, or NULL if |
931 |
|
|
* the source (parv[0]) is a server. |
932 |
|
|
* |
933 |
|
|
*/ |
934 |
michael |
5114 |
static void |
935 |
michael |
5337 |
m_userhost(char *parv[], unsigned int parc, char *msg, const struct UserInfo *source_p) |
936 |
michael |
5052 |
{ |
937 |
michael |
5114 |
if (parc < 4) |
938 |
|
|
return; |
939 |
michael |
5052 |
|
940 |
michael |
5114 |
command_userhost(parv[3]); |
941 |
michael |
5052 |
} |
942 |
|
|
|
943 |
|
|
/* m_cannot_join |
944 |
|
|
* |
945 |
|
|
* parv[0] = source |
946 |
|
|
* parv[1] = numeric |
947 |
michael |
5069 |
* parv[2] = target (hopm) |
948 |
michael |
5052 |
* parv[3] = channel |
949 |
|
|
* parv[4] = error text |
950 |
|
|
* |
951 |
|
|
*/ |
952 |
michael |
5114 |
static void |
953 |
michael |
5337 |
m_cannot_join(char *parv[], unsigned int parc, char *msg, const struct UserInfo *source_p) |
954 |
michael |
5052 |
{ |
955 |
michael |
5280 |
const struct ChannelConf *channel = NULL; |
956 |
michael |
5052 |
|
957 |
michael |
5114 |
if (parc < 5) |
958 |
|
|
return; |
959 |
michael |
5052 |
|
960 |
michael |
5114 |
/* Is it one of our channels? */ |
961 |
|
|
if ((channel = get_channel(parv[3])) == NULL) |
962 |
|
|
return; |
963 |
michael |
5052 |
|
964 |
michael |
5114 |
if (EmptyString(channel->invite)) |
965 |
|
|
return; |
966 |
michael |
5052 |
|
967 |
michael |
5114 |
irc_send("%s", channel->invite); |
968 |
michael |
5052 |
} |
969 |
|
|
|
970 |
|
|
/* m_kill |
971 |
|
|
* |
972 |
|
|
* parv[0] = source |
973 |
|
|
* parv[1] = numeric |
974 |
michael |
5069 |
* parv[2] = target (hopm) |
975 |
michael |
5052 |
* parv[3] = channel |
976 |
|
|
* parv[4] = error text |
977 |
|
|
* |
978 |
|
|
*/ |
979 |
michael |
5114 |
static void |
980 |
michael |
5337 |
m_kill(char *parv[], unsigned int parc, char *msg, const struct UserInfo *source_p) |
981 |
michael |
5052 |
{ |
982 |
michael |
5084 |
/* Restart hopm to rehash */ |
983 |
|
|
main_restart(); |
984 |
michael |
5052 |
} |