initial commit

1 files changed, 85 insertions, 0 deletions

diff --git a/irc.c b/irc.c
new file mode 100644
index 0000000..92a925e
--- /dev/null
+++ b/irc.c
@@ -0,0 +1,85 @@
+
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "irc.h"
+
+static int tcp_connect(const char *host, int port)
+{
+	struct sockaddr_in addr;
+	struct hostent *h;
+	int sock = socket(AF_INET, SOCK_STREAM, 0);
+	if (sock < 0) 
+		return sock;
+
+	h = gethostbyname(host);
+	if (h == NULL) 
+		return -1;
+
+	memset(&addr, 0, sizeof(addr));
+	addr.sin_family = AF_INET;
+        addr.sin_port = htons(port);
+	memcpy(&addr.sin_addr, h->h_addr, h->h_length);
+        if (connect(sock, (struct sockaddr *) &addr, 
+	    sizeof(struct sockaddr_in))) {
+		close(sock);
+		sock = -1;
+	}
+	return sock;
+}
+
+struct irc_session *irc_connect(const char* server, int port, const char *nick,
+				const char *pass)
+{
+	char buf[256];
+	struct irc_session *sess;
+	
+	sess = malloc(sizeof(struct irc_session));
+	if (sess == NULL)
+		return NULL;
+		
+	sess->nick = nick;
+	sess->server = server;
+	sess->fd = tcp_connect(server, port);
+	if (sess->fd < 0) 
+		return NULL;
+		
+	/* login */
+	if (pass)
+		irc_send(sess, "PASS", pass);
+	irc_send(sess, "NICK", nick);
+	snprintf(buf, sizeof(buf), "%s localhost %s :%s", nick, server, nick);
+	irc_send(sess, "USER", buf);
+	return sess;
+}
+
+int irc_send(struct irc_session *s, const char *command, const char *args)
+{
+	char buf[4096];
+	snprintf(buf, sizeof(buf), "%s %s\r\n", command, args);
+	return write(s->fd, buf, strlen(buf));
+}
+
+int irc_send_chan(struct irc_session *s, const char *chan, const char *msg)
+{
+	char buf[4096];
+	snprintf(buf, sizeof(buf), "%s :%s", chan, msg);
+	return irc_send(s, "PRIVMSG", buf);
+}
+
+int irc_send_ping(struct irc_session *s)
+{
+	return irc_send(s, "PING", s->server);
+}
+
+int irc_close(struct irc_session *s, const char *msg)
+{
+	irc_send(s, "QUIT", msg ? msg : "");
+	close(s->fd);
+	free(s);
+}