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/*
* http.c
* Some simple routines for connecting to a remote tcp socket
* Copyright 1999 Hvard Kvlen <havardk@sol.no>
*
* 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.
*/
/* FIXME: We need to have *one* place in xmms where you configure proxies */
#include "http.h"
gint http_open_connection(gchar * server, gint port)
{
gint sock;
struct hostent *host;
struct sockaddr_in address;
sock = socket(AF_INET, SOCK_STREAM, 0);
address.sin_family = AF_INET;
if (!(host = gethostbyname(server)))
return 0;
memcpy(&address.sin_addr.s_addr, *(host->h_addr_list), sizeof(address.sin_addr.s_addr));
address.sin_port = g_htons(port);
if (connect(sock, (struct sockaddr *) &address, sizeof (struct sockaddr_in)) == -1)
return 0;
return sock;
}
void http_close_connection(gint sock)
{
shutdown(sock, 2);
close(sock);
}
gint http_read_line(gint sock, gchar * buf, gint size)
{
gint i = 0;
while (i < size - 1)
{
if (read(sock, buf + i, 1) <= 0)
{
if (i == 0)
return -1;
else
break;
}
if (buf[i] == '\n')
break;
if (buf[i] != '\r')
i++;
}
buf[i] = '\0';
return i;
}
gint http_read_first_line(gint sock, gchar * buf, gint size)
{
/* Skips the HTTP-header, if there is one, and reads the first line into buf.
Returns number of bytes read. */
gint i;
/* Skip the HTTP-header */
if ((i = http_read_line(sock, buf, size)) < 0)
return -1;
if (!strncmp(buf, "HTTP", 4)) /* Check to make sure its not HTTP/0.9 */
{
while (http_read_line(sock, buf, size) > 0)
/* nothing */;
if ((i = http_read_line(sock, buf, size)) < 0)
return -1;
}
return i;
}
gchar * http_get(gchar * url)
{
gchar *server, *getstr, *buf = NULL, *bptr;
gchar *gs, *gc, *turl = url;
gint sock, n, bsize, port = 0;
/* Skip past ``http://'' part of URL */
if ( !strncmp(turl, "http:", 5) ) {
turl += 5;
if ( !strncmp(turl, "//", 2) )
turl += 2;
}
/* If path starts with a '/', we are referring to localhost */
if ( turl[0] == '/' )
server = "localhost";
else
server = turl;
/* Check if URL contains port specification */
gc = strchr(turl, ':');
gs = strchr(turl, '/');
if ( gc != NULL && gc < gs ) {
port = atoi(gc+1);
*gc = '\0';
}
if ( port == 0 )
port = 80;
/* Make sure that server string is null terminated. */
if ( gs )
*gs = '\0';
/*
* Now, open connection to server.
*/
sock = http_open_connection(server, port);
/* Repair the URL string that we broke earlier on */
if ( gs )
*gs = '/';
if ( gc && gc == '\0' )
*gc = ':';
if ( sock == 0 )
return NULL;
/*
* Send query to socket.
*/
/* getstr = g_strdup_printf("GET %s HTTP/1.0\r\n\r\n", */
/* gs ? gs : "/"); */
getstr = g_strdup_printf("GET %s HTTP/1.0\r\n\r\n", url ? url : "/");
if ( write(sock, getstr, strlen(getstr)) == -1 ) {
http_close_connection(sock);
return NULL;
}
/*
* Start receiving result.
*/
bsize = 4096;
bptr = buf = g_malloc(bsize);
if ( (n = http_read_first_line(sock, bptr, bsize)) == -1 ) {
g_free(buf);
buf = NULL;
goto Done;
}
bsize -= n;
bptr += n;
while ( (n = http_read_line(sock, bptr, bsize)) != -1 ) {
bptr += n;
bsize -= n;
}
Done:
http_close_connection(sock);
/*
* Return result buffer to caller.
*/
return buf;
}
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