1 /* vi: set sw=4 ts=4: */
5 * Connect to host at port using address resolusion from getaddrinfo
12 #include <sys/types.h>
13 #include <sys/socket.h>
16 #include <sys/socket.h>
17 #include <netinet/in.h>
18 #include <arpa/inet.h>
21 /* Return network byte ordered port number for a service.
22 * If "port" is a number use it as the port.
23 * If "port" is a name it is looked up in /etc/services, if it isnt found return
26 unsigned short bb_lookup_port(const char *port, unsigned short default_port)
28 unsigned short port_nr = htons(default_port);
31 long port_long = strtol(port, &endptr, 10);
33 if (errno != 0 || *endptr!='\0' || endptr==port || port_long < 0 || port_long > 65535) {
34 struct servent *tserv = getservbyname(port, "tcp");
36 port_nr = tserv->s_port;
39 port_nr = htons(port_long);
45 void bb_lookup_host(struct sockaddr_in *s_in, const char *host)
49 memset(s_in, 0, sizeof(struct sockaddr_in));
50 s_in->sin_family = AF_INET;
51 he = xgethostbyname(host);
52 memcpy(&(s_in->sin_addr), he->h_addr_list[0], he->h_length);
55 int xconnect(struct sockaddr_in *s_addr)
57 int s = socket(AF_INET, SOCK_STREAM, 0);
58 if (connect(s, (struct sockaddr_in *)s_addr, sizeof(struct sockaddr_in)) < 0)
60 bb_perror_msg_and_die("Unable to connect to remote host (%s)",
61 inet_ntoa(s_addr->sin_addr));