irclibs/C/irc.c

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#include "irc.h"
unsigned int IRCC_connect(IRCC_client *irc, const char *ip, const unsigned int port){
struct hostent *ghbn = gethostbyname(ip);
if (!ghbn)
return IRCC_ERROR;
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//Only ipv4
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struct sockaddr_in client_str;
memset(&client_str, 0, sizeof(client_str));
client_str.sin_family = AF_INET;
client_str.sin_port = htons(port);
client_str.sin_addr.s_addr = inet_addr(inet_ntoa(*(struct in_addr *)ghbn->h_addr));
irc->socket = socket(AF_INET, SOCK_STREAM, 0);
if (irc->socket < 0)
return IRCC_ERROR;
int status = connect(irc->socket, (struct sockaddr *)&client_str, sizeof(client_str));
if (status == -1)
return IRCC_ERROR;
return IRCC_SUCCESS;
}
unsigned int IRCC_register(IRCC_client *irc, const char *nickname){
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size_t size = strlen("NICK %s\r\nUSER %s 0 localhost :%s \r\n") + (strlen(nickname) * 3);
char *tmp = (char *)malloc(size);
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if (tmp == NULL){
fprintf(stderr, "malloc returned NULL (IRCC_register)\n");
exit(1);
}
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sleep(2);
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snprintf(tmp, size, "NICK %s\r\nUSER %s 0 localhost :%s\r\n", nickname, nickname, nickname);
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send(irc->socket, tmp, strlen(tmp), 0);
free(tmp);
return IRCC_SUCCESS;
}
void IRCC_parse(char *tmp, IRCC_client *irc){
irc->raw[strcspn(irc->raw, "\r\n")] = '\0';
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if (tmp != NULL){
//Message
if (strstr(tmp, ":") != NULL)
irc->msg = strstr(tmp, ":");
//Channel
if (strstr(tmp, " ") != NULL){
irc->channel = strstr(tmp, " ") + 1;
irc->channel[strcspn(irc->channel, ":") - 1] = '\0';
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}
//Nickname
irc->raw[strcspn(irc->raw, "!")] = '\0';
irc->nick = irc->raw + 1;
}
}
unsigned int IRCC_recv(IRCC_client *irc){
memset(irc->raw, '\0', irc->size);
irc->channel = NULL;
irc->msg = NULL;
irc->nick = NULL;
int msg_size = recv(irc->socket, irc->raw, irc->size, 0);
if (msg_size == 0 || msg_size == -1)
return IRCC_DISCONNECTED;
else if (!strncmp(irc->raw, "PING", 4)){
*(strchr(irc->raw, 'I')) = 'O';
send(irc->socket, irc->raw, strlen(irc->raw), 0);
return IRCC_PING;
}
else {
//puts(irc->raw);
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//Check end of motd
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if (strstr(irc->raw, "PRIVMSG ") == NULL && strstr(irc->raw, "MOTD"))
return IRCC_CONNECTED;
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//Other
else if (strstr(irc->raw, "PRIVMSG ")){
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IRCC_parse(strstr(irc->raw, "PRIVMSG "), irc);
return IRCC_PRIVMSG;
}
else if (strstr(irc->raw, "NICK ")){
IRCC_parse(strstr(irc->raw, "NICK "), irc);
return IRCC_NICK;
}
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else if (strstr(irc->raw, "TOPIC ")){
IRCC_parse(strstr(irc->raw, "TOPIC "), irc);
return IRCC_TOPIC;
}
else if (strstr(irc->raw, "MODE ")){
IRCC_parse(strstr(irc->raw, "MODE "), irc);
return IRCC_MODE;
}
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else if (strstr(irc->raw, "JOIN ")){
IRCC_parse(strstr(irc->raw, "JOIN "), irc);
return IRCC_JOIN;
}
else if (strstr(irc->raw, "PART ") || strstr(irc->raw, "QUIT ")){
IRCC_parse(strstr(irc->raw, "PART "), irc);
IRCC_parse(strstr(irc->raw, "QUIT "), irc);
return IRCC_PART;
}
}
return IRCC_SUCCESS;
}
void IRCC_send(IRCC_client *irc, char *msg, char *channel){
size_t size = strlen("PRIVMSG :\r\n") + strlen(channel) + strlen(msg);
char *tmp = (char *)malloc(size + 1);
if (tmp == NULL){
fprintf(stderr, "malloc returned NULL (IRCC_send)\n");
exit(1);
}
snprintf(tmp, size, "PRIVMSG %s :%s\r\n", channel, msg);
send(irc->socket, tmp, strlen(tmp), 0);
memset(tmp, 0, size);
free(tmp);
}
unsigned int IRCC_init(IRCC_client *irc, size_t size){
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if (size <= 250){
fprintf(stderr, "Low buffer size (IRCC_init) (Min 250/512)\n");
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return IRCC_ERROR;
}
irc->raw = (char *)malloc(size + 1);
if (irc->raw == NULL){
fprintf(stderr, "malloc returned NULL (IRCC_init)\n");
exit(1);
}
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irc->msg = irc->nick = irc->channel = NULL;
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irc->size = size;
return IRCC_SUCCESS;
}
void IRCC_close(IRCC_client *irc){
close(irc->socket);
free(irc->raw);
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irc->raw = irc->msg = irc->nick = irc->channel = NULL;
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irc->size = 0;
}