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/*
* Copyright (c) 1993 W. Richard Stevens. All rights reserved.
* Permission to use or modify this software and its documentation only for
* educational purposes and without fee is hereby granted, provided that
* the above copyright notice appear in all copies. The author makes no
* representations about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*/
/*
Copyright (C) 2004, 2005 Stephen Bach
This file is part of the Viewglob package.
Viewglob is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Viewglob is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Viewglob; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "common.h"
#include "socket-connect.h"
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <string.h>
gint unix_connect(const char* port) {
gint sockfd;
struct sockaddr_un servaddr;
gchar* home;
gchar* name;
if ((home = getenv("HOME")) == NULL) {
g_critical("User does not have a home!");
return -1;
}
name = g_strconcat(home, "/.viewglob/.", port, NULL);
if (strlen(name) + 1 > sizeof(servaddr.sun_path)) {
g_critical("Socket name too long");
return -1;
}
sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
if (sockfd < 0) {
g_critical("Could not create socket: %s", g_strerror(errno));
return -1;
}
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sun_family = AF_LOCAL;
strcpy(servaddr.sun_path, name);
g_free(name);
if (connect(sockfd, (struct sockaddr*) &servaddr,
sizeof(servaddr)) == -1) {
g_critical("Connection error to %s: %s", servaddr.sun_path,
g_strerror(errno));
return -1;
}
return sockfd;
}
gint tcp_connect(const char *host, const char *serv) {
gint sockfd;
#ifdef HAVE_GETADDRINFO
gint n;
struct addrinfo hints, *res, *ressave;
(void) memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
if ( (n = getaddrinfo(host, serv, &hints, &res)) != 0) {
g_critical("tcp_connect error for %s, %s: %s",
host, serv, gai_strerror(n));
return -1;
}
ressave = res;
do {
sockfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (sockfd < 0)
continue; /* ignore this one */
if (connect(sockfd, res->ai_addr, res->ai_addrlen) == 0)
break; /* success */
(void) close(sockfd); /* ignore this one */
} while ( (res = res->ai_next) != NULL);
if (res == NULL) { /* errno set from final connect() */
g_critical("tcp_connect error for %s, %s: %s", host, serv,
g_strerror(errno));
return -1;
}
freeaddrinfo(ressave);
#else
struct sockaddr_in servaddr;
struct in_addr** pptr;
struct in_addr* inetaddrp[2];
struct in_addr inetaddr;
struct hostent* hp;
int port = atoi(serv);
if ((hp = gethostbyname(host)) == NULL) {
if (inet_aton(host, &inetaddr) == 0) {
g_critical("Could not convert hostname: %s",
g_strerror(errno));
return -1;
}
else {
inetaddrp[0] = &inetaddr;
inetaddrp[1] = NULL;
pptr = inetaddrp;
}
}
else
pptr = (struct in_addr**) hp->h_addr_list;
for ( ; *pptr != NULL; pptr++) {
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
g_critical("Could not create socket: %s", g_strerror(errno));
return -1;
}
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(port);
memcpy(&servaddr.sin_addr, *pptr, sizeof(struct in_addr));
if (connect(sockfd, (struct sockaddr*) &servaddr,
sizeof(servaddr)) == 0)
break; /* success */
g_warning("Connection error: %s", g_strerror(errno));
(void) close(sockfd);
}
if (*pptr == NULL) {
g_critical("Unable to connect.");
return -1;
}
#endif
return sockfd;
}
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