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/*
* Ayttm
*
* Copyright (C) 2009 the Ayttm team
*
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* Basic functions like hostname lookup, connect and getting data */
#include "intl.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#ifdef __MINGW32__
#include <winsock2.h>
#else
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#endif
#include "common.h"
#include "net_constants.h"
struct addrinfo *lookup_address(const char *host, int port_num, int family)
{
struct addrinfo hints;
struct addrinfo *result = NULL;
char port[10];
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = family;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_CANONNAME;
snprintf(port, sizeof(port), "%d", port_num);
if (getaddrinfo(host, port, &hints, &result) < 0) {
fprintf(stderr, "Lookup: unable to create socket for %s:%s\n",
host, port);
} else {
return result;
}
return NULL;
}
int connect_address(const char *host, int port_num, void *info)
{
int fd;
struct addrinfo hints;
struct addrinfo *result = NULL, *rp = NULL;
char port[10];
int ret = -1;
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
snprintf(port, sizeof(port), "%d", port_num);
if ((ret = getaddrinfo(host, port, &hints, &result)) < 0) {
fprintf(stderr,
"Connect: unable to create socket for %s:%s(%s)\n",
host, port, gai_strerror(ret));
ret = AY_HOSTNAME_LOOKUP_FAIL;
} else {
for (rp = result; rp; rp = rp->ai_next) {
fd = socket(rp->ai_family, rp->ai_socktype,
rp->ai_protocol);
if (fd == -1)
continue;
if (connect(fd, rp->ai_addr, rp->ai_addrlen) != -1) {
/* Preserve the connection info if requested */
if(info)
memcpy(info, rp->ai_addr,
rp->ai_addrlen);
freeaddrinfo(result);
return fd;
} else {
perror("connect:");
ret = AY_CONNECT_FAILED;
}
}
}
if (result)
freeaddrinfo(result);
return ret;
}
/* this code is borrowed from cvs 1.10 */
int ay_recv_line(int sock, char **resultp)
{
int c;
char *result;
size_t input_index = 0;
size_t result_size = 80;
result = (char *)malloc(result_size);
while (1) {
char ch;
if (recv(sock, &ch, 1, 0) < 0) {
fprintf(stderr, "recv() error from server\n");
return -1;
}
c = ch;
if (c == EOF) {
free(result);
/* It's end of file. */
fprintf(stderr, "end of file from server\n");
}
if (c == '\012')
break;
result[input_index++] = c;
while (input_index + 1 >= result_size) {
result_size *= 2;
result = (char *)realloc(result, result_size);
}
}
if (resultp)
*resultp = result;
/* Terminate it just for kicks, but we *can* deal with embedded NULs. */
result[input_index] = '\0';
if (resultp == NULL)
free(result);
return input_index;
}
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