4 * TCP socket module for WebCit
15 #include <sys/types.h>
16 #include <sys/socket.h>
17 #include <netinet/in.h>
18 #include <arpa/inet.h>
24 char server_is_local = 0;
27 #define INADDR_NONE 0xffffffff
32 RETSIGTYPE timeout(int signum)
34 fprintf(stderr, "Connection 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;
52 } else if ((sin.sin_port = htons((u_short) atoi(service))) == 0) {
53 fprintf(stderr, "Can't get %s service entry\n", service);
56 phe = gethostbyname(host);
58 bcopy(phe->h_addr, (char *) &sin.sin_addr, phe->h_length);
59 } else if ((sin.sin_addr.s_addr = inet_addr(host)) == INADDR_NONE) {
60 fprintf(stderr, "Can't get %s host entry: %s\n",
61 host, strerror(errno));
64 if ((ppe = getprotobyname(protocol)) == 0) {
65 fprintf(stderr, "Can't get %s protocol entry: %s\n",
66 protocol, strerror(errno));
69 if (!strcmp(protocol, "udp"))
74 s = socket(PF_INET, type, ppe->p_proto);
76 fprintf(stderr, "Can't create socket: %s\n", strerror(errno));
79 signal(SIGALRM, timeout);
82 if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
83 fprintf(stderr, "can't connect to %s.%s: %s\n",
84 host, service, strerror(errno));
88 signal(SIGALRM, SIG_IGN);
97 * Input binary data from socket
99 void serv_read(char *buf, int bytes)
104 while (len < bytes) {
105 rlen = read(WC->serv_sock, &buf[len], bytes - len);
107 fprintf(stderr, "Server connection broken: %s\n",
119 * input string from pipe
121 void serv_gets(char *strbuf)
129 serv_read(&buf[0], 1);
132 } while ((ch != 10) && (ch != 13) && (ch != 0) && (len < 255));
134 /* fprintf(stderr, ">%s\n", strbuf); */
140 * send binary to server
142 void serv_write(char *buf, int nbytes)
144 int bytes_written = 0;
146 while (bytes_written < nbytes) {
147 retval = write(WC->serv_sock, &buf[bytes_written],
148 nbytes - bytes_written);
150 fprintf(stderr, "Server connection broken: %s\n",
156 bytes_written = bytes_written + retval;
162 * send line to server
164 void serv_puts(char *string)
168 sprintf(buf, "%s\n", string);
169 serv_write(buf, strlen(buf));
174 * convenience function to send stuff to the server
176 void serv_printf(const char *format,...)
181 va_start(arg_ptr, format);
182 vsprintf(buf, format, arg_ptr);
186 serv_write(buf, strlen(buf));
187 /* fprintf(stderr, "<%s", buf); */