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
35 RETSIGTYPE timeout(int signum)
37 fprintf(stderr, "Connection timed out.\n");
41 int connectsock(char *host, char *service, char *protocol)
46 struct sockaddr_in sin;
49 bzero((char *) &sin, sizeof(sin));
50 sin.sin_family = AF_INET;
52 pse = getservbyname(service, protocol);
54 sin.sin_port = pse->s_port;
55 } else if ((sin.sin_port = htons((u_short) atoi(service))) == 0) {
56 fprintf(stderr, "Can't get %s service entry\n", service);
59 phe = gethostbyname(host);
61 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));
67 if ((ppe = getprotobyname(protocol)) == 0) {
68 fprintf(stderr, "Can't get %s protocol entry: %s\n",
69 protocol, strerror(errno));
72 if (!strcmp(protocol, "udp"))
77 s = socket(PF_INET, type, ppe->p_proto);
79 fprintf(stderr, "Can't create socket: %s\n", strerror(errno));
82 signal(SIGALRM, timeout);
85 if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
86 fprintf(stderr, "can't connect to %s.%s: %s\n",
87 host, service, strerror(errno));
91 signal(SIGALRM, SIG_IGN);
100 * Input binary data from socket
102 void serv_read(char *buf, int bytes)
107 while (len < bytes) {
108 rlen = read(serv_sock, &buf[len], bytes - len);
110 fprintf(stderr, "Server connection broken: %s\n",
122 * input string from pipe
124 void serv_gets(char *strbuf)
132 serv_read(&buf[0], 1);
135 } while ((ch != 10) && (ch != 13) && (ch != 0) && (len < 255));
137 /* fprintf(stderr, ">%s\n", strbuf); */
143 * send binary to server
145 void serv_write(char *buf, int nbytes)
147 int bytes_written = 0;
149 while (bytes_written < nbytes) {
150 retval = write(serv_sock, &buf[bytes_written],
151 nbytes - bytes_written);
153 fprintf(stderr, "Server connection broken: %s\n",
159 bytes_written = bytes_written + retval;
165 * send line to server
167 void serv_puts(char *string)
171 sprintf(buf, "%s\n", string);
172 serv_write(buf, strlen(buf));
177 * convenience function to send stuff to the server
179 void serv_printf(const char *format,...)
184 va_start(arg_ptr, format);
185 vsprintf(buf, format, arg_ptr);
189 serv_write(buf, strlen(buf));
190 /* fprintf(stderr, "<%s", buf); */