4 * TCP socket module for WebCit
16 #include <sys/types.h>
18 #include <sys/socket.h>
21 #include <netinet/in.h>
35 char server_is_local = 0;
38 #define INADDR_NONE 0xffffffff
43 RETSIGTYPE timeout(int signum)
45 fprintf(stderr, "Connection timed out.\n");
49 int connectsock(char *host, char *service, char *protocol)
54 struct sockaddr_in sin;
57 bzero((char *) &sin, sizeof(sin));
58 sin.sin_family = AF_INET;
60 pse = getservbyname(service, protocol);
62 sin.sin_port = pse->s_port;
63 } else if ((sin.sin_port = htons((u_short) atoi(service))) == 0) {
64 fprintf(stderr, "Can't get %s service entry\n", service);
67 phe = gethostbyname(host);
69 bcopy(phe->h_addr, (char *) &sin.sin_addr, phe->h_length);
70 } else if ((sin.sin_addr.s_addr = inet_addr(host)) == INADDR_NONE) {
71 fprintf(stderr, "Can't get %s host entry: %s\n",
72 host, strerror(errno));
75 if ((ppe = getprotobyname(protocol)) == 0) {
76 fprintf(stderr, "Can't get %s protocol entry: %s\n",
77 protocol, strerror(errno));
80 if (!strcmp(protocol, "udp"))
85 s = socket(PF_INET, type, ppe->p_proto);
87 fprintf(stderr, "Can't create socket: %s\n", strerror(errno));
90 signal(SIGALRM, timeout);
93 if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
94 fprintf(stderr, "can't connect to %s.%s: %s\n",
95 host, service, strerror(errno));
99 signal(SIGALRM, SIG_IGN);
108 * Input binary data from socket
110 void serv_read(char *buf, int bytes)
115 while (len < bytes) {
116 rlen = read(WC->serv_sock, &buf[len], bytes - len);
118 fprintf(stderr, "Server connection broken: %s\n",
130 * input string from pipe
132 void serv_gets(char *strbuf)
140 serv_read(&buf[0], 1);
143 } while ((ch != 10) && (ch != 13) && (ch != 0) && (len < 255));
145 /* fprintf(stderr, ">%s\n", strbuf); */
151 * send binary to server
153 void serv_write(char *buf, int nbytes)
155 int bytes_written = 0;
157 while (bytes_written < nbytes) {
158 retval = write(WC->serv_sock, &buf[bytes_written],
159 nbytes - bytes_written);
161 fprintf(stderr, "Server connection broken: %s\n",
167 bytes_written = bytes_written + retval;
173 * send line to server
175 void serv_puts(char *string)
179 sprintf(buf, "%s\n", string);
180 serv_write(buf, strlen(buf));
185 * convenience function to send stuff to the server
187 void serv_printf(const char *format,...)
192 va_start(arg_ptr, format);
193 vsprintf(buf, format, arg_ptr);
197 serv_write(buf, strlen(buf));
198 /* fprintf(stderr, "<%s", buf); */