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Copy pathinterface.c
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363 lines (323 loc) · 10.1 KB
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#ifndef __GNUC__
#pragma code_seg( "RTV_TEXT" )
#pragma data_seg( "RTV_DATA" )
#pragma bss_seg( "RTV_BSS" )
#pragma const_seg( "RTV_RD" )
#endif
/*
* libRTV
* by rtvguy
* A library encapsulating most of the functionality of John Todd Larason's
* ReplayPC project and Lee Thompson's GuideParser project.
*
* libRTV includes much of the original source code by the authors of the
* ReplayPC and GuideParser projects. GuideParser was modified under the
* terms of its license to remove support for parsing ReplayChannels and
* add support for parsing all current versions of ReplayGuide data. ReplayPC
* was modified under the terms of its license to improve efficiency of the
* network code for the purposes of streaming video to a calling program, as
* well as to remove reliance on the OpenSSL library for MD5 functions.
*
* ReplayPC Copyright (C) 2002 John Todd Larason <jtl@molehill.org>
* GuideParser Copyright (C) 2002-2003 Lee Thompson <thompsonl@logh.net>,
* Dan Frumin <rtv@frumin.com>, Todd Larason <jtl@molehill.org>
* libRTV Copyright (C) 2003-2004 rtvguy
*
* 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.
*/
#include <string.h>
#include <stdio.h>
#include "httpfsclient.h"
#include "guideclient.h"
#include "GuideParser.h"
#include "interface.h"
#ifdef _XBOX
#include <Xtl.h>
typedef SOCKET socket_fd;
#elif defined _WIN32
#include <WS2tcpip.h>
typedef SOCKET socket_fd;
#else
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/select.h>
#include <stdlib.h>
#define closesocket(fd) close(fd)
typedef int socket_fd;
typedef socket_fd SOCKET;
#define INVALID_SOCKET (-1)
#endif
//*********************************************************************************************
u64 rtv_get_filesize(const char* strHostName, const char* strFileName)
{
char * data = NULL;
char ** lines;
int num_lines;
int i;
u64 size;
unsigned long status;
status = hfs_do_simple(&data, strHostName,
"fstat",
"name", strFileName,
NULL);
if (status != 0) {
//fprintf(stderr, "Error fstat %ld\n", status);
free(data);
return 0;
}
num_lines = rtv_split_lines(data, &lines);
for (i = 0; i < num_lines; i++) {
if (strncmp(lines[i], "size=", 5) == 0) {
sscanf(lines[i]+5, "%llu", &size);
break;
}
}
rtv_free_lines(num_lines, lines);
free(data);
return size;
}
//*********************************************************************************************
unsigned long rtv_get_guide(unsigned char ** result, const char * address)
{
char * orig_timestamp = "0";
unsigned char * timestamp = NULL;
unsigned long size;
unsigned long status;
status = guide_client_get_snapshot(result, ×tamp, &size,
address, orig_timestamp);
if (timestamp)
free(timestamp);
if (status != 0) {
//fprintf(stderr, "Error get_snapshot %ld\n", status);
return 0;
}
return size;
}
//*********************************************************************************************
int rtv_parse_guide(char * szOutputBuffer, const char * szInput, const size_t InputSize)
{
return(GuideParser(szOutputBuffer, szInput, InputSize));
}
//*********************************************************************************************
int rtv_get_guide_xml(unsigned char ** result, const char * address)
{
unsigned long gsize;
unsigned char * lresult = NULL;
gsize = rtv_get_guide(&lresult, address);
if (!gsize)
{
if (lresult)
free (lresult);
return 0;
}
*result = malloc(gsize * 1.5);
if (!*result)
{
if (lresult)
free (lresult);
return 0;
}
rtv_parse_guide((char*)*result, (char*)lresult, gsize);
if (lresult)
free (lresult);
return 1;
}
//*********************************************************************************************
int rtv_list_files(unsigned char ** result, const char * address, const char * path)
{
unsigned long status;
status = hfs_do_simple((char **)result, address,
"ls",
"name", path,
NULL);
if (status != 0) {
//fprintf(stderr, "Error %ld\n", status);
if (result)
free(result);
return 0;
}
return 1;
}
//*********************************************************************************************
RTVD rtv_open_file(const char * address, const char * strFileName, u64 filePos)
{
RTVD rtvd;
char szOffset[32];
rtvd = malloc(sizeof *rtvd);
rtvd->firstReadDone = 0;
#ifdef _LINUX
sprintf(szOffset,"%llu",filePos);
#else
_i64toa(filePos,szOffset,10);
#endif
rtvd->hc = hfs_do_chunked_open( address,
"readfile",
"pos", szOffset,
"name", strFileName,
NULL);
return rtvd;
}
//*********************************************************************************************
size_t rtv_read_file(RTVD rtvd, char * lpBuf, size_t uiBufSize)
{
size_t lenread;
lenread = hfs_do_chunked_read(rtvd->hc, (char *) lpBuf, rtvd->firstReadDone, uiBufSize);
rtvd->firstReadDone = 1;
return lenread;
}
//*********************************************************************************************
void rtv_close_file(RTVD rtvd)
{
hfs_do_chunked_close(rtvd->hc);
free(rtvd);
}
//*********************************************************************************************
int rtv_discovery(struct RTV ** result, unsigned long msTimeout)
{
const char upnpQuery[] = "M-SEARCH * HTTP/1.1\r\nHOST: 239.255.255.250:1900\r\nMAN: \"ssdp:discover\"\r\nST: urn:replaytv-com:device:ReplayDevice:1\r\nMX: 3\r\n\r\n";
const char httpQuery[] = "GET /%s HTTP/1.1\r\nHost: %s\r\n\r\n";
char sendBuf[128];
char upnpFile[32];
char * p1, * p2;
char msg[2048];
int opt;
int r, len, numRTV;
SOCKET s1, s2;
struct timeval tv;
struct RTV * rtv = NULL;
fd_set fds1, fds2;
struct sockaddr_in sin; /* send address structure */
struct sockaddr_in sin2; /* receive address structure */
// Need to initialize Winsock on Win32
#if defined(_WIN32) && !defined(_XBOX)
WSADATA wd;
if (WSAStartup(MAKEWORD(2,2), &wd) == -1)
{
goto error;
}
#endif
s1 = 0;
s2 = 0;
// Set up the information for the UPNP port connection
sin.sin_family = AF_INET;
sin.sin_port = htons(1900);
// For some reason, the UPNP address doesn't work on Xbox; so we
// use the broadcast address, which seems to work.
#if defined(_XBOX) || defined(_WIN32)
sin.sin_addr.S_un.S_addr = htonl(INADDR_BROADCAST);
#else
inet_aton("239.255.255.250",(struct in_addr*)&sin.sin_addr.s_addr);
#endif
if ((s1 = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
{
//fprintf(stderr,"error: socket(): %d\n", errno);
goto error;
}
opt = 1;
if ((setsockopt(s1, SOL_SOCKET, SO_BROADCAST, (const void*)&opt, sizeof(opt))) < 0) {
goto error;
}
// Send the UPNP query
r = sendto(s1, upnpQuery, (int) strlen(upnpQuery), 0, (struct sockaddr *)&sin, sizeof(sin));
// Initialize variables in preparation to receive responses from the ReplayTV(s)
numRTV = 0;
rtv = calloc(1, sizeof(struct RTV));
if (!rtv) goto error;
//memset(rtv,0,sizeof(struct RTV));
tv.tv_sec = msTimeout / 1000;
tv.tv_usec = (msTimeout % 1000) * 1000;
FD_ZERO(&fds1);
FD_SET(s1, &fds1);
// Read the response from a ReplayTV, loop while there are more responses waiting
while (select((int) s1 + 1, &fds1, NULL, NULL, &tv))
{
len = sizeof(struct sockaddr);
r = recvfrom(s1, msg, sizeof(msg), 0, (struct sockaddr *)&sin2, (socklen_t*)&len);
if (r < 0)
{
//fprintf(stderr, "recvfrom error: %d\n", errno);
} else {
numRTV++;
// Reallocate memory to accomodate the additional ReplayTVs found
if (numRTV > 1)
{
rtv = realloc(rtv, sizeof(struct RTV) * numRTV);
if (!rtv) goto error;
}
//printf("ip: %s\n", inet_ntoa(sin2.sin_addr));
// Extract IP part and copy to hostname
p1 = strstr(msg, "LOCATION: http://") + 17;
p2 = strchr(p1, '/');
*p2 = '\0';
strcpy(rtv[numRTV-1].hostname, p1);
// Extract UPNP device description file part and copy to upnpFile
p1 = p2 + 1;
p2 = strchr(p1, '\r');
*p2 = '\0';
strcpy(upnpFile, p1);
strcpy(rtv[numRTV-1].friendlyName, rtv[numRTV-1].hostname);
// Open socket for connecting to ReplayTV to get its friendlyName
if ((s2 = socket(AF_INET, SOCK_STREAM, 0)) >= 0) {
// Connect to ReplayTV
sin2.sin_port = htons(80);
r = connect(s2, (struct sockaddr *)&sin2, sizeof(sin2));
sprintf(sendBuf, httpQuery, upnpFile, rtv[numRTV-1].hostname);
r = send(s2, sendBuf, (int) strlen(sendBuf), 0);
FD_ZERO(&fds2);
FD_SET(s2, &fds2);
// Read response if there is one
if (select((int) s2 + 1, &fds2, NULL, NULL, &tv)) {
p1 = msg;
p2 = p1 + sizeof(msg);
r = 0;
do {
p1+=r;
r = recv(s2, p1, p2-p1, 0);
} while(r>0 && (p2-p1) > 0);
msg[sizeof(msg)-1] = 0;
p1 = strstr(msg, "<friendlyName>");
if(p1) {
p1 += 14;
p2 = strchr(p1, '<');
if(p2)
{
*p2 = '\0';
strcpy(rtv[numRTV-1].friendlyName, p1);
}
}
}
r = closesocket(s2);
s2 = 0;
}
}
}
r = closesocket(s1);
s1 = 0;
//Need to clean up the Winsock on Win32
#if defined(_WIN32) && !defined(_XBOX)
WSACleanup();
#endif
// Pass back the pointer to the array of rtv and return number of ReplayTV(s) found
*result = rtv;
return numRTV;
// Clean up and return error
error:
if (rtv) free(rtv);
if (s1) closesocket(s1);
if (s2) closesocket(s2);
#if defined(_WIN32) && !defined(_XBOX)
WSACleanup();
#endif
return -1;
}
//*********************************************************************************************