1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
#define _GNU_SOURCE //I want memmem out of string.h
#include <signal.h>
#include <string.h>
#include <sys/time.h>
#include <stdlib.h>
#include <stdio.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <sys/select.h>
#include <sys/un.h>
//epoch's lib includes:
#include <idc.h> //going to use this for mainloop instead of writing one in here.
#include "irc.h"
//#define DEBUG "epoch" //nick or channel to send debug info to.
#define CHUNK 4096
#define SILLYLIMIT 1024
//extern struct idc_global idc;//not sure if this is needed.
/* how this works:
if server == |/program then open a socketpair and fork and exec program
else try serv as IPv6, as IPv4, resolve as IPv6, resolve as IPv4
connect to that.
*/
int serverConnect(char *serv,char *port) {
int fd=-1;
int s[2];
int pid;
int try_ipv4;
char *name[4];
char buf[SILLYLIMIT];
struct addrinfo hints, *servinfo, *p=0;
struct hostent *he;
struct sockaddr_in saddr;
struct sockaddr_in6 saddr6;
//printf("libirc: serverConnect: %s %s\n",serv,port);
if(!serv || !port) return -1;
if(*serv == '|') {
name[0]=serv+1;
name[1]=port;
if((name[2]=strchr(port,' '))) {
*name[2]=0;
name[2]++;
name[3]=0;
}
socketpair(PF_LOCAL,SOCK_STREAM,0,s);
if(!(pid=fork())) {
dup2(s[1],fileno(stdin));
dup2(s[1],fileno(stdout));
execv(name[0],name);
}
if(pid == -1) return -1;
//printf("libirc: serverConnect: returning something! %d\n",fd);
return s[0];
}
memset(&hints,0,sizeof hints);
hints.ai_socktype=SOCK_STREAM;
hints.ai_protocol=IPPROTO_TCP;
for(try_ipv4=0;try_ipv4 < 2;try_ipv4++) {
hints.ai_family=try_ipv4?AF_INET:AF_INET6;
if(fd != -1) close(fd);
if((fd=socket(hints.ai_family,SOCK_STREAM,IPPROTO_TCP)) < 0) return -1;
if(!(he=gethostbyname2(
try_ipv4
?inet_aton(serv,&(saddr.sin_addr))
?inet_ntoa(saddr.sin_addr)
:serv
:inet_pton(AF_INET6,serv,&(saddr6.sin6_addr))
?inet_ntop(AF_INET6,&(saddr6.sin6_addr),buf,SILLYLIMIT)
:serv
,hints.ai_family))) continue;
for(;*(he->h_addr_list);(he->h_addr_list)++) {
inet_ntop(hints.ai_family,*(he->h_addr_list),buf,SILLYLIMIT);
if(!getaddrinfo(buf,port,&hints,&servinfo)) {
for(p=servinfo;p;p=p->ai_next) {
if(connect(fd,p->ai_addr, p->ai_addrlen) < 0) {
//printf("libirc: serverConnect: trying something else...\n");
continue;
} else {
//printf("libirc: serverConnect: returning something! %d\n",fd);
return fd;
}
}
}
}
}
//printf("I tried as hard as I could and couldn't connect to %s:%s\n",serv,port);
return -1;
}
int fdlen(int *fds) {
int i;
for(i=0;fds[i] != -1;i++);
return i+1;
}
char *memstr(char *s,char *find,size_t l) {
return memmem(s,l,find,strlen(find));
}
/* already in string.h!
char *memmem(char *s,char *find,size_t sl,size_t fl) {
size_t i,j,fl;
if(!s) return 0;
if(!find) return 0;
for(i=0;i<l;i++) {
for(j=0;j<fl;j++) {
if(s[i] != find[j]) break;
}
if(j == fl) return s+i;
}
return 0;
}
*/
void (*g_line_handler)(); //kek
void (*g_extra_handler)(); //kek
int g_extra_fd;
void irc_handler(struct shit *me,char *line) {
// fprintf(stderr,"debug: %s\n",line);
if(!line) {
//we're EOFd
//we need to reconnect to the server.
return;
}
if(!strncmp(line,"PING ",5)) {
//I write back to the me->fd
fprintf(stderr,"libirc: GOT A PING. SENDING PONG.\n");
dprintf(me->fd,"PONG %s\r\n",line+5);
return;//we probably don't need to let the bot know that it pinged. right?
}
//I need a way to get the line_handler passed to runem in here.
g_line_handler(me->fd,line);
//if(g_extra_handler) g_extra_handler(me->fd);///haxxxxxxxx fuck me.
//GLOBALS. OFC. THAT IS THE RIGHT WAY TO DO IT. :D :D :D :D :D :D :D :|
}
void alarm_handler(int sig) {
g_extra_handler(g_extra_fd);//???
alarm(1);//lol
}
//is this really good enough to work? it doesn't have extra_handler use though.
int runem(int *fds,void (*line_handler)(),void (*extra_handler)()) { //wrap select_everything() so runem() still works
g_line_handler=line_handler;
g_extra_handler=extra_handler;
g_extra_fd=fds[0];
int i;
//signal(SIGALRM,alarm_handler);
//alarm(1);
//initialization of this can't be in here. this gets ran after a tail is added.
for(i=0;fds[i] != -1;i++) {
add_fd(fds[i],irc_handler);
}
select_on_everything();
return 1;
}
//wrap runem to keep runit around :P
int runit(int fd,void (*line_handler)(),void (*extra_handler)()) {
int fds[2];
fds[0]=fd;
fds[1]=-1;
return runem(fds,line_handler,extra_handler);
}
//not needed?
int ircConnect(char *serv,char *port,char *nick,char *user) {
char sendstr[1024];
int fd;
fd=serverConnect(serv,port);
if(!fd) {
return 0;
}
snprintf(sendstr,sizeof(sendstr)-1,"NICK %s\r\nUSER %s\r\n",nick,user);
write(fd,sendstr,strlen(sendstr));
return fd;
}
//this function mangles the input.
//gotta free the returned pointer but not each pointer in the array.
char **line_cutter(int fd,char *line,struct user *user) {
int i;
char **a=malloc(sizeof(char *) * 256);//heh.
if(!a) exit(54);
memset(a,0,sizeof(char *) * 256);
if(!user) return 0;
user->nick=0;
user->user=0;
user->host=0;
if(!line) return 0;
if(strchr(line,'\r')) *strchr(line,'\r')=0;
if(strchr(line,'\n')) *strchr(line,'\n')=0;
if(line[0]==':') {
if((user->nick=strchr(line,':'))) {
*(user->nick)=0;
(user->nick)++;
}
}
if(user->nick) {
if((a[0]=strchr((user->nick),' '))) {
*a[0]=0;
a[0]++;
for(i=0;(a[i+1]=strchr(a[i],' '));i++) {
*a[i+1]=0;
a[i+1]++;
if(*a[i+1] == ':') {//we're done.
*a[i+1]=0;
a[i+1]++;
break;
}
}
}
if(((user->user)=strchr((user->nick),'!'))) {
*(user->user)=0;
(user->user)++;
if(((user->host)=strchr((user->user),'@'))) {
*(user->host)=0;
(user->host)++;
}
} else {
user->host=user->nick;
}
}
return a;
}
|
