--- /dev/null
+/*
+ *
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <string.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdarg.h>
+
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+int sock_connect(char *host, char *service, char *protocol)
+{
+ struct hostent *phe;
+ struct servent *pse;
+ struct protoent *ppe;
+ struct sockaddr_in sin;
+ struct sockaddr_in egress_sin;
+ int s, type;
+
+ if (host == NULL) return(-1);
+ if (service == NULL) return(-1);
+ if (protocol == NULL) return(-1);
+
+ memset(&sin, 0, sizeof(sin));
+ sin.sin_family = AF_INET;
+
+ pse = getservbyname(service, protocol);
+ if (pse) {
+ sin.sin_port = pse->s_port;
+ } else if ((sin.sin_port = htons((u_short) atoi(service))) == 0) {
+ fprintf(stderr, "Can't get %s service entry: %s\n",
+ service, strerror(errno));
+ return(-1);
+ }
+ phe = gethostbyname(host);
+ if (phe) {
+ memcpy(&sin.sin_addr, phe->h_addr, phe->h_length);
+ } else if ((sin.sin_addr.s_addr = inet_addr(host)) == INADDR_NONE) {
+ fprintf(stderr, "Can't get %s host entry: %s\n",
+ host, strerror(errno));
+ return(-1);
+ }
+ if ((ppe = getprotobyname(protocol)) == 0) {
+ fprintf(stderr, "Can't get %s protocol entry: %s\n",
+ protocol, strerror(errno));
+ return(-1);
+ }
+ if (!strcmp(protocol, "udp")) {
+ type = SOCK_DGRAM;
+ } else {
+ type = SOCK_STREAM;
+ }
+
+ s = socket(PF_INET, type, ppe->p_proto);
+ if (s < 0) {
+ fprintf(stderr, "Can't create socket: %s\n", strerror(errno));
+ return(-1);
+ }
+
+ /* Now try to connect to the remote host. */
+ if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
+ fprintf(stderr, "Can't connect to %s:%s: %s\n",
+ host, service, strerror(errno));
+ close(s);
+ return(-1);
+ }
+
+ return (s);
+}
+
+
+
+/*
+ * sock_read_to() - input binary data from socket, with a settable timeout.
+ * Returns the number of bytes read, or -1 for error.
+ * If keep_reading_until_full is nonzero, we keep reading until we get the number of requested bytes
+ */
+int sock_read_to(int sock, char *buf, int bytes, int timeout, int keep_reading_until_full)
+{
+ int len,rlen;
+ fd_set rfds;
+ struct timeval tv;
+ int retval;
+
+ len = 0;
+ while (len<bytes) {
+ FD_ZERO(&rfds);
+ FD_SET(sock, &rfds);
+ tv.tv_sec = timeout;
+ tv.tv_usec = 0;
+
+ retval = select(sock+1, &rfds, NULL, NULL, &tv);
+
+ if (FD_ISSET(sock, &rfds) == 0) { /* timed out */
+ fprintf(stderr, "sock_read() timed out.\n");
+ return(-1);
+ }
+
+ rlen = read(sock, &buf[len], bytes-len);
+ if (rlen<1) {
+ fprintf(stderr, "sock_read() failed: %s\n",
+ strerror(errno));
+ return(-1);
+ }
+ len = len + rlen;
+ if (!keep_reading_until_full) return(len);
+ }
+ return(bytes);
+}
+
+
+/*
+ * sock_read() - input binary data from socket.
+ * Returns the number of bytes read, or -1 for error.
+ */
+int sock_read(int sock, char *buf, int bytes, int keep_reading_until_full)
+{
+ return sock_read_to(sock, buf, bytes, 30, keep_reading_until_full);
+}
+
+
+/*
+ * sock_write() - send binary to server.
+ * Returns the number of bytes written, or -1 for error.
+ */
+int sock_write(int sock, char *buf, int nbytes)
+{
+ int bytes_written = 0;
+ int retval;
+ while (bytes_written < nbytes) {
+ retval = write(sock, &buf[bytes_written],
+ nbytes - bytes_written);
+ if (retval < 1) {
+ return (-1);
+ }
+ bytes_written = bytes_written + retval;
+ }
+ return (bytes_written);
+}
+
+
+
+/*
+ * Input string from socket - implemented in terms of sock_read()
+ *
+ */
+int sock_getln(int sock, char *buf, int bufsize)
+{
+ int i;
+
+ /* Read one character at a time.
+ */
+ for (i = 0;; i++) {
+ if (sock_read(sock, &buf[i], 1, 1) < 0) return(-1);
+ if (buf[i] == '\n' || i == (bufsize-1))
+ break;
+ }
+
+ /* If we got a long line, discard characters until the newline.
+ */
+ if (i == (bufsize-1))
+ while (buf[i] != '\n')
+ if (sock_read(sock, &buf[i], 1, 1) < 0) return(-1);
+
+ /* Strip any trailing CR and LF characters.
+ */
+ buf[i] = 0;
+ while ( (i > 0)
+ && ( (buf[i - 1]==13)
+ || ( buf[i - 1]==10)) ) {
+ i--;
+ buf[i] = 0;
+ }
+ return(i);
+}
+
+
+
+/*
+ * sock_puts() - send line to server - implemented in terms of serv_write()
+ * Returns the number of bytes written, or -1 for error.
+ */
+int sock_puts(int sock, char *buf)
+{
+ int i, j;
+
+ i = sock_write(sock, buf, strlen(buf));
+ if (i<0) return(i);
+ j = sock_write(sock, "\n", 1);
+ if (j<0) return(j);
+ return(i+j);
+}