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/* $Id: miniwget.c,v 1.22 2009/02/28 10:36:35 nanard Exp $ */
/* Project : miniupnp
* Author : Thomas Bernard
* Copyright (c) 2005 Thomas Bernard
* This software is subject to the conditions detailed in the
* LICENCE file provided in this distribution.
* */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "miniupnpc.h"
#ifdef WIN32
#include <winsock2.h>
#include <io.h>
#define MAXHOSTNAMELEN 64
#define MIN(x,y) (((x)<(y))?(x):(y))
#define snprintf _snprintf
#define herror
#define socklen_t int
#else
#include <unistd.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define closesocket close
#endif
#if defined(__sun) || defined(sun)
#define MIN(x,y) (((x)<(y))?(x):(y))
#endif
#include "miniupnpcstrings.h"
/* miniwget2() :
* */
static void *
miniwget2 (const char *url, const char *host,
unsigned short port, const char *path,
int *size, char *addr_str, int addr_str_len)
{
char buf[2048];
int s;
struct sockaddr_in dest;
struct hostent *hp;
*size = 0;
hp = gethostbyname (host);
if (hp == NULL)
{
herror (host);
return NULL;
}
/* memcpy((char *)&dest.sin_addr, hp->h_addr, hp->h_length); */
memcpy (&dest.sin_addr, hp->h_addr, sizeof (dest.sin_addr));
memset (dest.sin_zero, 0, sizeof (dest.sin_zero));
s = socket (PF_INET, SOCK_STREAM, 0);
if (s < 0)
{
perror ("socket");
return NULL;
}
dest.sin_family = AF_INET;
dest.sin_port = htons (port);
if (connect (s, (struct sockaddr *) &dest, sizeof (struct sockaddr_in)) < 0)
{
perror ("connect");
closesocket (s);
return NULL;
}
/* get address for caller ! */
if (addr_str)
{
struct sockaddr_in saddr;
socklen_t len;
len = sizeof (saddr);
getsockname (s, (struct sockaddr *) &saddr, &len);
#ifndef WIN32
inet_ntop (AF_INET, &saddr.sin_addr, addr_str, addr_str_len);
#else
/* using INT WINAPI WSAAddressToStringA(LPSOCKADDR, DWORD, LPWSAPROTOCOL_INFOA, LPSTR, LPDWORD);
* But his function make a string with the port : nn.nn.nn.nn:port */
/* if(WSAAddressToStringA((SOCKADDR *)&saddr, sizeof(saddr),
NULL, addr_str, (DWORD *)&addr_str_len))
{
printf("WSAAddressToStringA() failed : %d\n", WSAGetLastError());
}*/
strncpy (addr_str, inet_ntoa (saddr.sin_addr), addr_str_len);
#endif
#ifdef DEBUG
printf ("address miniwget : %s\n", addr_str);
#endif
}
snprintf (buf, sizeof (buf),
"GET %s HTTP/1.1\r\n"
"Host: %s:%d\r\n"
"Connection: Close\r\n"
"User-Agent: " OS_STRING ", UPnP/1.0, MiniUPnPc/"
MINIUPNPC_VERSION_STRING "\r\n" "\r\n", path, host, port);
/*write(s, buf, strlen(buf)); */
send (s, buf, strlen (buf), 0);
{
int n, headers = 1;
char *respbuffer = NULL;
int allreadyread = 0;
/*while((n = recv(s, buf, 2048, 0)) > 0) */
while ((n = ReceiveData (s, buf, 2048, 5000)) > 0)
{
if (headers)
{
int i = 0;
while (i < n - 3)
{
if (buf[i] == '\r' && buf[i + 1] == '\n'
&& buf[i + 2] == '\r' && buf[i + 3] == '\n')
{
headers = 0; /* end */
if (i < n - 4)
{
respbuffer = (char *) realloc ((void *) respbuffer,
allreadyread + (n - i -
4));
memcpy (respbuffer + allreadyread, buf + i + 4,
n - i - 4);
allreadyread += (n - i - 4);
}
break;
}
i++;
}
}
else
{
respbuffer = (char *) realloc ((void *) respbuffer,
allreadyread + n);
memcpy (respbuffer + allreadyread, buf, n);
allreadyread += n;
}
}
*size = allreadyread;
#ifdef DEBUG
printf ("%d bytes read\n", *size);
#endif
closesocket (s);
return respbuffer;
}
}
/* parseURL()
* arguments :
* url : source string not modified
* hostname : hostname destination string (size of MAXHOSTNAMELEN+1)
* port : port (destination)
* path : pointer to the path part of the URL
*
* Return values :
* 0 - Failure
* 1 - Success */
int
parseURL (const char *url, char *hostname, unsigned short *port, char **path)
{
char *p1, *p2, *p3;
p1 = strstr (url, "://");
if (!p1)
return 0;
p1 += 3;
if ((url[0] != 'h') || (url[1] != 't')
|| (url[2] != 't') || (url[3] != 'p'))
return 0;
p2 = strchr (p1, ':');
p3 = strchr (p1, '/');
if (!p3)
return 0;
memset (hostname, 0, MAXHOSTNAMELEN + 1);
if (!p2 || (p2 > p3))
{
strncpy (hostname, p1, MIN (MAXHOSTNAMELEN, (int) (p3 - p1)));
*port = 80;
}
else
{
strncpy (hostname, p1, MIN (MAXHOSTNAMELEN, (int) (p2 - p1)));
*port = 0;
p2++;
while ((*p2 >= '0') && (*p2 <= '9'))
{
*port *= 10;
*port += (unsigned short) (*p2 - '0');
p2++;
}
}
*path = p3;
return 1;
}
void *
miniwget (const char *url, int *size)
{
unsigned short port;
char *path;
/* protocol://host:port/chemin */
char hostname[MAXHOSTNAMELEN + 1];
*size = 0;
if (!parseURL (url, hostname, &port, &path))
return NULL;
return miniwget2 (url, hostname, port, path, size, 0, 0);
}
void *
miniwget_getaddr (const char *url, int *size, char *addr, int addrlen)
{
unsigned short port;
char *path;
/* protocol://host:port/chemin */
char hostname[MAXHOSTNAMELEN + 1];
*size = 0;
if (addr)
addr[0] = '\0';
if (!parseURL (url, hostname, &port, &path))
return NULL;
return miniwget2 (url, hostname, port, path, size, addr, addrlen);
}
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