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/*
* Copyright (C) 2013 Martin Willi
* Copyright (C) 2013 revosec AG
*
* This program 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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.
*/
#include <library.h>
#include <errno.h>
#include <unistd.h>
#include <limits.h>
#include "stream_tcp.h"
/**
* See header.
*/
int stream_parse_uri_tcp(char *uri, struct sockaddr *addr)
{
char *pos, buf[128];
host_t *host;
u_long port;
int len;
if (!strpfx(uri, "tcp://"))
{
return -1;
}
uri += strlen("tcp://");
pos = strrchr(uri, ':');
if (!pos)
{
return -1;
}
if (*uri == '[' && pos > uri && *(pos - 1) == ']')
{
/* IPv6 URI */
snprintf(buf, sizeof(buf), "%.*s", (int)(pos - uri - 2), uri + 1);
}
else
{
snprintf(buf, sizeof(buf), "%.*s", (int)(pos - uri), uri);
}
port = strtoul(pos + 1, &pos, 10);
if (port == ULONG_MAX || *pos || port > 65535)
{
return -1;
}
host = host_create_from_dns(buf, AF_UNSPEC, port);
if (!host)
{
return -1;
}
len = *host->get_sockaddr_len(host);
memcpy(addr, host->get_sockaddr(host), len);
host->destroy(host);
return len;
}
/**
* See header
*/
stream_t *stream_create_tcp(char *uri)
{
union {
struct sockaddr_in in;
struct sockaddr_in6 in6;
struct sockaddr sa;
} addr;
int fd, len;
len = stream_parse_uri_tcp(uri, &addr.sa);
if (len == -1)
{
DBG1(DBG_NET, "invalid stream URI: '%s'", uri);
return NULL;
}
fd = socket(addr.sa.sa_family, SOCK_STREAM, 0);
if (fd < 0)
{
DBG1(DBG_NET, "opening socket '%s' failed: %s", uri, strerror(errno));
return NULL;
}
if (connect(fd, &addr.sa, len))
{
DBG1(DBG_NET, "connecting to '%s' failed: %s", uri, strerror(errno));
close(fd);
return NULL;
}
return stream_create_from_fd(fd);
}
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