usbloadergx/source/network/networkops.cpp

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/****************************************************************************
* Network Operations
* for USB Loader GX
*
* HTTP operations
* Written by dhewg/bushing modified by dimok
****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <ogcsys.h>
#include <ogc/machine/processor.h>
#include <fcntl.h>
#include "prompts/PromptWindows.h"
#include "language/gettext.h"
#include "settings/CSettings.h"
#include "utils/timer.h"
#include "networkops.h"
#include "main.h"
#include "http.h"
#include "svnrev.h"
#include "gecko.h"
#include "update.h"
#define PORT 4299
/*** Incomming filesize ***/
u32 infilesize = 0;
u32 uncfilesize = 0;
bool updateavailable = false;
s32 connection;
static s32 socket;
static bool updatechecked = false;
static bool networkinitialized = false;
static bool checkincomming = false;
static bool waitforanswer = false;
static char IP[16];
char incommingIP[50];
char wiiloadVersion[2];
static lwp_t networkthread = LWP_THREAD_NULL;
static bool networkHalt = true;
/****************************************************************************
* Initialize_Network
***************************************************************************/
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void Initialize_Network(void)
{
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if (networkinitialized) return;
s32 result;
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result = if_config(IP, NULL, NULL, true);
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if (result < 0)
{
networkinitialized = false;
return;
}
else
{
networkinitialized = true;
return;
}
}
/****************************************************************************
* DeinitNetwork
***************************************************************************/
void DeinitNetwork(void)
{
net_wc24cleanup();
net_deinit();
networkinitialized = false;
}
/****************************************************************************
* Check if network was initialised
***************************************************************************/
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bool IsNetworkInit(void)
{
return networkinitialized;
}
/****************************************************************************
* Get network IP
***************************************************************************/
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char * GetNetworkIP(void)
{
return IP;
}
/****************************************************************************
* Get incomming IP
***************************************************************************/
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char * GetIncommingIP(void)
{
return incommingIP;
}
s32 network_request(s32 connect, const char * request, char * filename)
{
char buf[1024];
char *ptr = NULL;
u32 cnt, size;
s32 ret;
/* Send request */
ret = net_send(connect, request, strlen(request), 0);
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if (ret < 0) return ret;
/* Clear buffer */
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memset(buf, 0, sizeof(buf));
/* Read HTTP header */
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for (cnt = 0; !strstr(buf, "\r\n\r\n"); cnt++)
if (net_recv(connect, buf + cnt, 1, 0) <= 0) return -1;
/* HTTP request OK? */
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if (!strstr(buf, "HTTP/1.1 200 OK")) return -1;
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if (filename)
{
/* Get filename */
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ptr = strstr(buf, "filename=\"");
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if (ptr)
{
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ptr += sizeof("filename=\"") - 1;
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for (cnt = 0; ptr[cnt] != '\r' && ptr[cnt] != '\n' && ptr[cnt] != '"'; cnt++)
{
filename[cnt] = ptr[cnt];
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filename[cnt + 1] = '\0';
}
}
}
/* Retrieve content size */
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ptr = strstr(buf, "Content-Length:");
if (!ptr) return -1;
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sscanf(ptr, "Content-Length: %u", &size);
return size;
}
s32 network_read(s32 connect, u8 *buf, u32 len)
{
u32 read = 0;
s32 ret = -1;
/* Data to be read */
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while (read < len)
{
/* Read network data */
ret = net_read(connect, buf + read, len - read);
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if (ret < 0) return ret;
/* Read finished */
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if (!ret) break;
/* Increment read variable */
read += ret;
}
return read;
}
/****************************************************************************
* Download request
***************************************************************************/
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s32 download_request(const char * url, char * filename)
{
//Check if the url starts with "http://", if not it is not considered a valid url
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if (strncmp(url, "http://", strlen("http://")) != 0)
{
return -1;
}
//Locate the path part of the url by searching for '/' past "http://"
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char *path = strchr(url + strlen("http://"), '/');
//At the very least the url has to end with '/', ending with just a domain is invalid
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if (path == NULL)
{
return -1;
}
//Extract the domain part out of the url
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int domainlength = path - url - strlen("http://");
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if (domainlength == 0)
{
return -1;
}
char domain[domainlength + 1];
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strlcpy(domain, url + strlen("http://"), domainlength + 1);
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connection = GetConnection(domain);
if (connection < 0)
{
return -1;
}
//Form a nice request header to send to the webserver
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char header[strlen(path) + strlen(domain) + strlen(url) + 100];
sprintf(header, "GET %s HTTP/1.1\r\nHost: %s\r\nReferer: %s\r\nConnection: close\r\n\r\n", path, domain, url);
s32 filesize = network_request(connection, header, filename);
return filesize;
}
/****************************************************************************
* HTML HEAD request
***************************************************************************/
char * HEAD_Request(const char * url)
{
if(strncmp(url, "http://", strlen("http://")) != 0)
{
gprintf("Not a valid URL");
return NULL;
}
char *path = strchr(url + strlen("http://"), '/');
if(!path)
{
gprintf("Not a valid URL path");
return NULL;
}
int domainlength = path - url - strlen("http://");
if(domainlength == 0)
{
gprintf("Not a valid domain");
return NULL;
}
char domain[domainlength + 1];
strncpy(domain, url + strlen("http://"), domainlength);
domain[domainlength] = '\0';
connection = GetConnection(domain);
if(connection < 0)
{
gprintf("Could not connect to the server.");
return NULL;
}
char header[strlen(path)+strlen(domain)*2+150];
sprintf(header, "HEAD %s HTTP/1.1\r\nHost: %s\r\nReferer: %s\r\nUser-Agent: USB Loader GX\r\nConnection: close\r\n\r\n", path, domain, domain);
/* Send request */
s32 ret = net_send(connection, header, strlen(header), 0);
if (ret < 0)
{
CloseConnection();
return NULL;
}
u32 cnt = 0;
char * buf = (char *) malloc(1024);
memset(buf, 0, 1024);
for (cnt = 0; !strstr(buf, "\r\n\r\n") && cnt < 1024; cnt++)
{
if(net_recv(connection, buf + cnt, 1, 0) <= 0)
{
CloseConnection();
free(buf);
return NULL;
}
}
CloseConnection();
return buf;
}
void CloseConnection()
{
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net_close(connection);
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if (waitforanswer)
{
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net_close(socket);
waitforanswer = false;
}
}
/****************************************************************************
* Test if connection to the address is available (PING)
***************************************************************************/
bool CheckConnection(const char *url, float timeout)
{
//Check if the url starts with "http://", if not it is not considered a valid url
if (strncmp(url, "http://", strlen("http://")) != 0)
return false;
//Locate the path part of the url by searching for '/' past "http://"
char *path = strchr(url + strlen("http://"), '/');
//At the very least the url has to end with '/', ending with just a domain is invalid
if (path == NULL)
return false;
//Extract the domain part out of the url
int domainlength = path - url - strlen("http://");
if (domainlength == 0)
return false;
char domain[domainlength + 1];
strlcpy(domain, url + strlen("http://"), domainlength + 1);
//Parsing of the URL is done, start making an actual connection
u32 ipaddress = getipbynamecached(domain);
if (ipaddress == 0)
return false;
//Initialize socket
s32 connection = net_socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
if (connection < 0) return connection;
s32 flags = net_fcntl(connection, F_GETFL, 0);
if (flags >= 0) flags = net_fcntl(connection, F_SETFL, flags | 4);
struct sockaddr_in connect_addr;
memset(&connect_addr, 0, sizeof(connect_addr));
connect_addr.sin_family = AF_INET;
connect_addr.sin_port = 80;
connect_addr.sin_addr.s_addr = getipbynamecached(domain);
Timer netTime;
int res = -1;
while(res < 0 && res != -127 && netTime.elapsed() < timeout)
{
res = net_connect(connection, (struct sockaddr*) &connect_addr, sizeof(connect_addr));
usleep(1000);
}
net_close(connection);
return !(res < 0 && res != -127);
}
/****************************************************************************
* NetworkWait
***************************************************************************/
int NetworkWait()
{
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if (!checkincomming) return -3;
struct sockaddr_in sin;
struct sockaddr_in client_address;
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socklen_t addrlen = sizeof(client_address);
//Open socket
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socket = net_socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
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if (socket == INVALID_SOCKET)
{
return socket;
}
sin.sin_family = AF_INET;
sin.sin_port = htons( PORT );
sin.sin_addr.s_addr = htonl( INADDR_ANY );
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if (net_bind(socket, (struct sockaddr*) &sin, sizeof(sin)) < 0)
{
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net_close(socket);
return -1;
}
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if (net_listen(socket, 3) < 0)
{
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net_close(socket);
return -1;
}
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connection = net_accept(socket, (struct sockaddr*) &client_address, &addrlen);
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sprintf(incommingIP, "%s", inet_ntoa(client_address.sin_addr));
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if (connection < 0)
{
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net_close(connection);
net_close(socket);
return -4;
}
else
{
unsigned char haxx[9];
//skip haxx
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net_read(connection, &haxx, 8);
wiiloadVersion[0] = haxx[4];
wiiloadVersion[1] = haxx[5];
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net_read(connection, &infilesize, 4);
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if (haxx[4] > 0 || haxx[5] > 4)
{
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net_read(connection, &uncfilesize, 4); // Compressed protocol, read another 4 bytes
}
waitforanswer = true;
checkincomming = false;
networkHalt = true;
}
return 1;
}
/****************************************************************************
* HaltNetwork
***************************************************************************/
void HaltNetworkThread()
{
networkHalt = true;
checkincomming = false;
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if (waitforanswer) CloseConnection();
// wait for thread to finish
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while (!LWP_ThreadIsSuspended(networkthread))
usleep(100);
}
/****************************************************************************
* ResumeNetworkThread
***************************************************************************/
void ResumeNetworkThread()
{
networkHalt = false;
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LWP_ResumeThread(networkthread);
}
/****************************************************************************
* Resume NetworkWait
***************************************************************************/
void ResumeNetworkWait()
{
networkHalt = true;
checkincomming = true;
waitforanswer = true;
infilesize = 0;
connection = -1;
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LWP_ResumeThread(networkthread);
}
/*********************************************************************************
* Networkthread for background network initialize and update check with idle prio
*********************************************************************************/
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static void * networkinitcallback(void *arg)
{
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while (1)
{
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if (!checkincomming && networkHalt) LWP_SuspendThread(networkthread);
Initialize_Network();
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if (networkinitialized == true && updatechecked == false)
{
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if (CheckUpdate() > 0) updateavailable = true;
//suspend thread
updatechecked = true;
networkHalt = true;
checkincomming = false;
}
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if (checkincomming) NetworkWait();
}
return NULL;
}
/****************************************************************************
* InitNetworkThread with priority 0 (idle)
***************************************************************************/
void InitNetworkThread()
{
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LWP_CreateThread(&networkthread, networkinitcallback, NULL, NULL, 16384, 0);
}
/****************************************************************************
* ShutdownThread
***************************************************************************/
void ShutdownNetworkThread()
{
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LWP_JoinThread(networkthread, NULL);
networkthread = LWP_THREAD_NULL;
}