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#include <sys/time.h>
#include <string.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>
//#define DEBUG "epoch" //nick or channel to send debug info to.
#define CHUNK 4096
int serverConnect(char *serv,char *port) {
struct addrinfo hints, *servinfo, *p;
int rv;
int fd=0;
memset(&hints,0,sizeof hints);
hints.ai_family=AF_INET;
hints.ai_socktype=SOCK_STREAM;
if((fd=socket(PF_INET,SOCK_STREAM,IPPROTO_TCP)) < 0) {
perror("socket");
return fd;
}
if((rv=getaddrinfo(serv,port,&hints,&servinfo)) != 0) {
fprintf(stderr,"error resolving '%s'.\n",serv);
return 0;
}
for(p=servinfo;p;p=p->ai_next) {
if (connect(fd,p->ai_addr, p->ai_addrlen) < 0) {
perror("connect");
continue;
}
break;
}
return p?fd:0;
}
int fdlen(int *fds) {
int i;
for(i=0;fds[i] != -1;i++);
return i+1;
}
int runem(int *fds,void (*line_handler)(),void (*extra_handler)()) {
int j;
int fdl=fdlen(fds);
fd_set master;
fd_set readfs;
struct timeval timeout;
int fdmax=0,n,s,i;
int fd;
char *backlogs[fdl];
char *t,*line=0;
int blsize=CHUNK;
int bllen=0;
char buffers[fdl][CHUNK];//THIS IS *NOT* NULL TERMINATED.
FD_ZERO(&master);
FD_ZERO(&readfs);
for(i=0;fds[i] != -1;i++) {
if(!backlogs[i]) return 252;
FD_SET(fds[i],&master);
backlogs[i]=malloc(CHUNK+1);
memset(backlogs[i],0,CHUNK);
memset(buffers[i],0,CHUNK);
fdmax=fds[i]>fdmax?fds[i]:fdmax;
}
int done=0;
while(!done) {
for(fd=0;fd<=fdmax;fd++) {
if(FD_ISSET(fd,&master)) {
extra_handler(fd);
}
}
readfs=master;
timeout.tv_sec=0;
timeout.tv_usec=1000;
if( select(fdmax+1,&readfs,0,0,&timeout) == -1 ) {
printf("\n!!!It is crashing here!!!\n\n");
perror("select");
return 1;
}
for(i=0;fds[i] != -1;i++) {
if(FD_ISSET(fds[i],&readfs)) {
if((n=recv(fds[i],buffers[i],CHUNK,0)) <= 0) {//read CHUNK bytes
fprintf(stderr,"recv: %d\n",n);
perror("recv");
return 2;
} else {
buffers[i][n]=0;//deff right.
if(bllen+n >= blsize) {//this is probably off...
blsize+=n;
t=malloc(blsize);
if(!t) {
printf("OH FUCK! MALLOC FAILED!\n");
exit(253);
}
memset(t,0,blsize);//optional?
memcpy(t,backlogs[i],blsize-n+1);//???
free(backlogs[i]);
backlogs[i]=t;
}
memcpy(backlogs[i]+bllen,buffers[i],n);
bllen+=n;
for(j=0,s=0;j<bllen;j++) {
if(backlogs[i][j]=='\n') {
line=malloc(j-s+3);//on linux it crashes without the +1 +3? weird. when did I do that?
if(!line) {
printf("ANOTHER malloc error!\n");
exit(254);
}
memcpy(line,backlogs[i]+s,j-s+2);
line[j-s+1]=0;//gotta null terminate this. line_handler expects it .
s=j+1;//the character after the newline.
if(!strncmp(line,"PING",4)) {
t=malloc(strlen(line));
strcpy(t,"PONG ");
strcat(t,line+6);
write(fds[i],t,strlen(t));
#ifdef DEBUG
printf("%s\nPONG %s\n",line,line+6);
write(fds[i],"PRIVMSG %s :PONG! w00t!\r\n",DEBUG,28);
#endif
} else if(!strncmp(line,"ERROR",5)) {
#ifdef DEBUG
printf("error: %s\n",line);
#endif
return 0;
} else {
line_handler(fds[i],line);
}
free(line);
}
}
//left shift the backlog so the last thing we got to is at the start
if(s > bllen) { //if the ending position is after the size of the backlog...
bllen=0;//fuck shifting. :P
} else {
for(j=s;j<=bllen;j++) {//should work.
backlogs[i][j-s]=backlogs[i][j];
}
bllen-=s;
}
}
}
}
}
return 0;
}
//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;
}
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