irC

commit 03e0a6da9b7cad912e067150ac1d21b401233177
parent 07e0027af49a1071c14b45d3d6ff576e590a27c2
Author: aabacchus <ben@bvnf.space>
Date:   Mon, 21 Jun 2021 09:03:53 +0100

base

Diffstat:
A
main.c
 | 
95
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 95 insertions(+), 0 deletions(-)
diff --git a/main.c b/main.c
@@ -0,0 +1,95 @@
+#include <stdio.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <netdb.h>
+
+#define BUF_LEN 512
+
+int sfd;
+void usage(const char *argv0);
+int ircWrite(char *format, ...);
+int ircRead();
+
+int main(int argc, char *argv[]) {
+    int s, c;
+    struct addrinfo hints;
+    struct addrinfo *result;
+    memset(&hints, 0, sizeof hints);
+    if (argc < 3) {
+        usage(argv[0]);
+    }
+
+    s = getaddrinfo(argv[1], argv[2], &hints, &result);
+    if (s != 0) {
+        fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(s));
+        exit(EXIT_FAILURE);
+    }
+    sfd = socket(AF_INET,SOCK_STREAM,0);
+// protocol 6 -> TCP (/etc/protocols)
+    if (sfd < -1) {
+        fprintf(stderr, "error creating socket\n");
+        return errno;
+    }
+    c = connect(sfd, result->ai_addr, result->ai_addrlen);
+    fprintf(stderr, "connecting to %s\n", result->ai_canonname);
+    if (c != 0) {
+        fprintf(stderr, "error connecting to %s\n", result->ai_canonname);
+        close(sfd);
+        return errno;
+    }
+    
+    // connect as USER
+    char *startmsg;
+    ssize_t startmsglen;
+    startmsg = "NICK hirC\r\nUSER irC 0 * :phoebos\r\n";
+    startmsglen = strlen(startmsg);
+    if (write(sfd, &startmsg, startmsglen) != startmsglen) {
+        fprintf(stderr, "incomplete write\n");
+        return errno;
+    }
+    printf("we're in.\r\n");
+    ircWrite("PRIVMSG phoebos :hi there from hirC\r\n");
+    printf("we're in..\n");
+    ircRead();
+    printf("we've read\n");
+    char *quit = 0;
+    char *line = NULL;
+    size_t * linelen = 0;
+    while (*quit == 0) {
+        // read from stdin
+        *line = NULL;
+        if (getline(&line, linelen, stdin) != 0) *quit = 2;
+        if (strncmp(line, "/quit", 5) == 0) *quit = 1;
+        ircWrite(line);
+        //ircWrite("PRIVMSG phoebos :hi there from hirC\r\n");
+        ircRead();
+    }
+
+    close(sfd);
+    return 0;
+}
+
+void usage(const char *argv0){
+    fprintf(stderr, "usage: %s host port\n", argv0);
+    exit(1);
+}
+
+int ircWrite(char *format, ...){
+    ssize_t ret;
+    ret = write(sfd, format, strlen(format));
+    if (!ret) perror("ircWrite"); //exit(errno);
+    return 0;
+}
+
+int ircRead(){
+    char buff[BUF_LEN];
+    ssize_t ret;
+    size_t nbytes = sizeof(buff);
+    ret = read(sfd, buff, BUF_LEN);
+    printf("Received %zd bytes:\n%s\n", ret, buff);
+    if (ret != nbytes) perror("ircRead"); //exit(errno);
+    return 0;
+}