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#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include "gpsd.h"
#if !defined (INADDR_NONE)
#define INADDR_NONE ((in_addr_t)-1)
#endif
int netlib_connectsock(const char *host, const char *service, const char *protocol)
{
struct hostent *phe;
struct servent *pse;
struct protoent *ppe;
struct sockaddr_in sin;
int s, type, one = 1;
memset((char *) &sin, 0, sizeof(sin));
/*@ -type -mustfreefresh @*/
sin.sin_family = AF_INET;
if ((pse = getservbyname(service, protocol)))
sin.sin_port = htons(ntohs((unsigned short) pse->s_port));
else if ((sin.sin_port = htons((unsigned short) atoi(service))) == 0)
return NL_NOSERVICE;
if ((phe = gethostbyname(host)))
memcpy((char *) &sin.sin_addr, phe->h_addr, phe->h_length);
else if ((sin.sin_addr.s_addr = inet_addr(host)) == INADDR_NONE)
return NL_NOHOST;
if ((ppe = getprotobyname(protocol)) == 0)
return NL_NOPROTO;
if (strcmp(protocol, "udp") == 0)
type = SOCK_DGRAM;
else
type = SOCK_STREAM;
if ((s = socket(PF_INET, type, ppe->p_proto)) < 0)
return NL_NOSOCK;
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one))==-1) {
(void)close(s);
return NL_NOSOCKOPT;
}
if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
(void)close(s);
return NL_NOCONNECT;
}
return s;
/*@ +type +mustfreefresh @*/
}
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