Загрузить файлы в «C»

C/Makefile

@@ -0,0 +1,5 @@
+all:
+	cc *.c -omain -O0 -g3
+
+clean:
+	rm main

C/irc.c

@@ -0,0 +1,153 @@
+#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;
+
+	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){
+	size_t size = strlen("USER \r\n 0 0  ") + strlen(nickname) + strlen(nickname);
+	char *tmp = (char *)malloc(size + 1);
+	if (tmp == NULL){
+		fprintf(stderr, "malloc returned NULL (IRCC_register)\n");
+		exit(1);
+	}
+
+	sleep(2);
+	snprintf(tmp, size, "USER %s 0 0 %s\r\n", nickname, nickname);
+	send(irc->socket, tmp, strlen(tmp), 0);
+
+	snprintf(tmp, size, "NICK %s\r\n", nickname);
+	send(irc->socket, tmp, strlen(tmp), 0);
+
+	free(tmp);
+	return IRCC_SUCCESS;
+}
+
+void IRCC_parse(char *tmp, IRCC_client *irc){
+	if (tmp != NULL){
+		//Message
+		if (strstr(tmp, ":") != NULL)
+			irc->msg = strstr(tmp, ":");
+
+		//Channel
+		if (strstr(tmp, "#") != NULL){
+			irc->channel = strstr(tmp, "#");
+			irc->channel[strcspn(irc->channel, " ")] = '\0';
+		}
+
+		//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);
+		irc->raw[strcspn(irc->raw, "\r\n")] = '\0';
+
+		if (strstr(irc->raw, "PRIVMSG ")){
+			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;
+		}
+
+		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){
+	if (size <= 200){
+		fprintf(stderr, "Low buffer size (IRCC_init)\n");
+		return IRCC_ERROR;
+	}
+
+	irc->raw = (char *)malloc(size + 1);
+	if (irc->raw == NULL){
+		fprintf(stderr, "malloc returned NULL (IRCC_init)\n");
+		exit(1);
+	}
+
+	irc->msg = NULL;
+	irc->nick = NULL;
+	irc->channel = NULL;
+
+	irc->size = size;
+	return IRCC_SUCCESS;
+}
+
+void IRCC_close(IRCC_client *irc){
+	close(irc->socket);
+
+	free(irc->raw);
+	irc->raw = NULL;
+	irc->msg = NULL;
+	irc->nick = NULL;
+	irc->channel = NULL;
+
+	irc->size = 0;
+}

C/irc.h

@@ -0,0 +1,37 @@
+#ifndef IRC_LINUX
+#define IRC_LINUX
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#define IRCC_NICK 8
+#define IRCC_PRIVMSG 7
+#define IRCC_JOIN 6
+#define IRCC_PART 5
+#define IRCC_PING 4
+
+#define IRCC_DISCONNECTED 2
+#define IRCC_ERROR 1
+#define IRCC_SUCCESS 0
+
+typedef struct {
+	int socket;
+	size_t size;
+	char *raw;
+	char *msg;
+	char *channel;
+	char *nick;
+}       IRCC_client;
+
+unsigned int IRCC_connect(IRCC_client *irc, const char *ip, const unsigned int port);
+unsigned int IRCC_register(IRCC_client *irc, const char *nickname);
+unsigned int IRCC_recv(IRCC_client *irc);
+void IRCC_send(IRCC_client *irc, char *msg, char *channel);
+unsigned int IRCC_init(IRCC_client *irc, size_t size);
+void IRCC_close(IRCC_client *irc);
+#endif

C/main.c

@@ -0,0 +1,51 @@
+#include "irc.h"
+#define IF_NULL(client) (client.msg != NULL || client.nick != NULL || client.channel != NULL)
+
+IRCC_client client;
+
+void die(char *msg){
+	puts(msg);
+	IRCC_close(&client);
+	exit(1);
+}
+
+int main(void){
+	IRCC_init(&client, 250);
+	int status = IRCC_connect(&client, "irc.libera.chat", 6667);
+	if (status == IRCC_ERROR)
+		die("Conn refused");
+
+	IRCC_register(&client, "bot");
+	sleep(5);
+	send(client.socket, "JOIN #channel\r\n", strlen("JOIN #channel\r\n"), 0);
+
+	while (1){
+		unsigned int irc_status = IRCC_recv(&client);
+		if (irc_status == IRCC_DISCONNECTED)
+			die("Disconnected");
+
+		if (IF_NULL(client)) {
+			client.msg++;
+			switch (irc_status) {
+				case IRCC_PRIVMSG:
+					printf("%s %s %s\n", client.channel, client.nick, client.msg);
+					break;
+
+				case IRCC_NICK:
+					printf("%s is know as %s", client.nick, client.msg);
+					break;
+
+				case IRCC_JOIN:
+					printf("< %s\n", client.nick);
+					break;
+
+				case IRCC_PART:
+					printf("> %s\n", client.nick);
+					break;
+
+				default:
+					break;
+			}
+		}
+	}
+}