4 * TCP socket module for WebCit
13 #include <sys/types.h>
14 #include <sys/socket.h>
15 #include <netinet/in.h>
16 #include <arpa/inet.h>
22 char server_is_local = 0;
25 #define INADDR_NONE 0xffffffff
33 void timeout(int signum) {
34 printf("\rConnection timed out.\n");
38 int connectsock(char *host, char *service, char *protocol)
43 struct sockaddr_in sin;
46 bzero((char *)&sin,sizeof(sin));
47 sin.sin_family = AF_INET;
49 pse=getservbyname(service,protocol);
51 sin.sin_port = pse->s_port;
53 else if ((sin.sin_port = htons((u_short)atoi(service))) == 0) {
54 fprintf(stderr,"can't get %s service entry\n", service);
58 phe=gethostbyname(host);
60 bcopy(phe->h_addr,(char *)&sin.sin_addr,phe->h_length);
62 else if ((sin.sin_addr.s_addr = inet_addr(host))==INADDR_NONE) {
63 fprintf(stderr,"can't get %s host entry: %s\n",
64 host,strerror(errno));
68 if ((ppe=getprotobyname(protocol))==0) {
69 fprintf(stderr,"can't get %s protocol entry: %s\n",
70 protocol,strerror(errno));
74 if (!strcmp(protocol,"udp"))
79 s = socket(PF_INET,type,ppe->p_proto);
81 fprintf(stderr,"can't create socket: %s\n",strerror(errno));
86 signal(SIGALRM,timeout);
89 if (connect(s,(struct sockaddr *)&sin,sizeof(sin))<0) {
90 fprintf(stderr,"can't connect to %s.%s: %s\n",
91 host,service,strerror(errno));
96 signal(SIGALRM,SIG_IGN);
105 * Input binary data from socket
107 void serv_read(char *buf, int bytes)
113 rlen = read(serv_sock,&buf[len],bytes-len);
115 fprintf(stderr, "Server connection broken: %s\n",
127 * input string from pipe
129 void serv_gets(char *strbuf)
137 serv_read(&buf[0], 1);
140 } while((ch!=10)&&(ch!=13)&&(ch!=0)&&(len<255));
142 /* fprintf(stderr, ">%s\n", strbuf); */
148 * send binary to server
150 void serv_write(char *buf, int nbytes)
152 int bytes_written = 0;
154 while (bytes_written < nbytes) {
155 retval = write(serv_sock, &buf[bytes_written],
156 nbytes - bytes_written);
158 fprintf(stderr, "Server connection broken: %s\n",
164 bytes_written = bytes_written + retval;
170 * send line to server
172 void serv_puts(char *string)
176 sprintf(buf,"%s\n",string);
177 serv_write(buf, strlen(buf));
182 * convenience function to send stuff to the server
184 void serv_printf(const char *format, ...) {
188 va_start(arg_ptr, format);
189 vsprintf(buf, format, arg_ptr);
193 serv_write(buf, strlen(buf));
194 /* fprintf(stderr, "<%s", buf); */