/**
* xmlNanoHTTPFetch:
* @URL: The URL to load
* @filename: the filename where the content should be saved
* @contentType: if available the Content-Type information will be
* returned at that location
*
* This function try to fetch the indicated resource via HTTP GET
* and save it's content in the file.
*
* Returns -1 in case of failure, 0 incase of success. The contentType,
* if provided must be freed by the caller
*/
int
xmlNanoHTTPFetch(const char *URL, const char *filename, char **contentType) {
void *ctxt = NULL;
char *buf = NULL;
int fd;
int len;
if (filename == NULL) return(-1);
ctxt = xmlNanoHTTPOpen(URL, contentType);
if (ctxt == NULL) return(-1);
if (!strcmp(filename, "-"))
fd = 0;
else {
fd = open(filename, O_CREAT | O_WRONLY, 00644);
if (fd < 0) {
xmlNanoHTTPClose(ctxt);
if ((contentType != NULL) && (*contentType != NULL)) {
xmlFree(*contentType);
*contentType = NULL;
}
return(-1);
}
}
xmlNanoHTTPFetchContent( ctxt, &buf, &len );
if ( len > 0 ) {
if (write(fd, buf, len)) {}
}
xmlNanoHTTPClose(ctxt);
close(fd);
return(0);
}
bool Weather::Refresh() {
std::string escaped_city = city_;
std::replace(escaped_city.begin(), escaped_city.end(), ' ', '+');
const std::string url =
std::string("http://www.google.com/ig/api?weather=") + escaped_city;
std::unique_ptr<void> context(xmlNanoHTTPOpen(url.c_str(), NULL));
if (context.get() == NULL) {
fprintf(stderr, "xmlNanoHTTPOpen failed\n");
return false;
}
// TODO: better buffer size logic
std::unique_ptr<char[]> buffer(new char[4096]);
int bytes_read = xmlNanoHTTPRead(context.get(), buffer.get(), 4096);
if (bytes_read == -1) {
fprintf(stderr, "xmlNanoHTTPRead failed due to parameter error\n");
return false;
}
if (doc_) {
xmlFreeDoc(doc_);
doc_ = NULL;
}
doc_ = xmlReadMemory(buffer.get(), strlen(buffer.get()),
url.c_str(), NULL, 0);
if (doc_ == NULL) {
fprintf(stderr, "xmlReadMemory failed\n");
return false;
}
if (icon_ != VG_INVALID_HANDLE) {
vgDestroyImage(icon_);
icon_ = VG_INVALID_HANDLE;
}
std::string icon_url =
std::string("http://www.google.com") +
EvaluateXPath("/xml_api_reply/weather/current_conditions/icon");
icon_ = ImageLoader::Load(icon_url);
if (icon_ == VG_INVALID_HANDLE) {
return false;
}
return true;
}
void GetXMLHttp() {
void * Ctxt;
char *contentType;
xmlNanoHTTPInit();
Ctxt = xmlNanoHTTPOpen(XML_URL, &contentType);
if (Ctxt == 0)
printf("ERROR: xmlNanoHTTPOpen() == 0\n");
if (xmlNanoHTTPReturnCode(Ctxt) != 200)
printf("ERROR: HTTP Code != OK\n");
// open output file
FILE *fp;
fp=fopen("test_get.xml","w");
// Write to file
const int Size = 2048;
char Buffer[Size];
int Count;
while ((Count = xmlNanoHTTPRead(Ctxt, Buffer, Size)) > 0)
fprintf(fp,"%s",Buffer);
//File.write(Buffer, Count);
fclose(fp);
if (Count == 0)
printf("STATUS: Connection closed\n");
if (Count == -1)
printf("ERROR: xmlNanoHTTPRead() == -1\n");
// Free ressources
xmlFree(contentType);
xmlNanoHTTPClose(Ctxt);
xmlNanoHTTPCleanup();
}
int
raptor_www_libxml_fetch(raptor_www *www)
{
if(www->proxy)
xmlNanoHTTPScanProxy(www->proxy);
www->ctxt=xmlNanoHTTPOpen((const char*)raptor_uri_as_string(www->uri), &www->type);
if(!www->ctxt)
return 1;
if(www->type) {
if(www->content_type) {
www->content_type(www, www->content_type_userdata, www->type);
if(www->failed) {
xmlNanoHTTPClose(www->ctxt);
return 1;
}
}
}
www->status_code=xmlNanoHTTPReturnCode(www->ctxt);
while(1) {
int len=xmlNanoHTTPRead(www->ctxt, www->buffer, RAPTOR_WWW_BUFFER_SIZE);
if(len<0)
break;
www->total_bytes += len;
if(www->write_bytes)
www->write_bytes(www, www->write_bytes_userdata, www->buffer, len, 1);
if(len < RAPTOR_WWW_BUFFER_SIZE || www->failed)
break;
}
xmlNanoHTTPClose(www->ctxt);
return www->failed;
}
static void* cacheopen(char const* url) {
const char* basename = strrchr(url,'/');
assert(basename);
static char dest[508];
snprintf(dest,508,"%s/%s",cacheDir,basename);
bool didtemp = false;
int doopen(void) {
int result = open(dest,O_RDONLY);
if(result<0) {
char temp[512];
snprintf(temp,512,"%s.temp",dest);
if(xmlIOHTTPMatch(url)) {
void* ctx = NULL;
#if W3_ARE_NOT_MORONS
ctx = xmlNanoHTTPOpen(url, NULL);
if(xmlNanoHTTPReturnCode(ctx) != 200)
#else
if(true)
#endif
{
// XXX: it always is... w3.org dies on HTTP/1.0
#if W3_ARE_NOT_MORONS
xmlNanoHTTPClose(ctx);
#endif
fprintf(stderr,"Curl fallback for %s\n",url);
int pid = fork();
if(pid == 0) {
execlp("curl","curl","-o",temp,url,NULL);
abort();
}
int status = 0;
waitpid(pid,&status,0);
if(!(WIFEXITED(status) && (0 == WEXITSTATUS(status)))) {
fprintf(stderr,"CUrl failed! %x %d\n",status,WEXITSTATUS(status));
abort();
}
} else {
assert(0==xmlNanoHTTPSave(ctx,temp));
}
} else if(xmlIOFTPMatch(url)) {
void* ftp = xmlNanoFTPOpen(url);
int out = open(temp,O_WRONLY|O_TRUNC|O_CREAT,0644);
assert(out>0);
char buf[0x1000];
for(;;) {
int amt = xmlNanoFTPRead(ftp, buf, 0x1000);
if(amt==0) break;
assert(amt>0);
write(out,buf,amt);
}
close(out);
} else {
FILE* fp = xmlFileOpen(url);
struct stat fpstat;
if(!fp) {
fprintf(stderr,"No idea what to do with url %s\n",url);
abort();
}
int inp = fileno(fp);
assert(0==fstat(inp,&fpstat));
off_t left = fpstat.st_size;
int out = open(temp,O_WRONLY|O_TRUNC|O_CREAT,0644);
assert(out>0);
do {
ssize_t amt = sendfile(out,inp,NULL,left);
if(amt<0) {
perror(url);
}
assert(amt>=0);
left -= amt;
} while(left > 0);
fclose(fp);
close(out);
}
rename(temp,dest); // doesn't matter if fails
unlink(temp); // in case it failed
return doopen();
}
return result;
}
void CheckVersionNumber()
{
//==== Init Nano HTTP ====//
xmlNanoHTTPInit();
xmlNanoHTTPScanProxy(NULL);
//==== Compute Version Number ====//
int ver_no = 10000*VSP_VERSION_MAJOR + 100*VSP_VERSION_MINOR + VSP_VERSION_CHANGE;
char cCurrentPath[FILENAME_MAX];
GetCurrentDir(cCurrentPath, sizeof(cCurrentPath));
int user_id = 0;
int path_len = strlen(cCurrentPath);
for ( int i = 0 ; i < path_len ; i++ )
{
srand ( (unsigned int)cCurrentPath[i] );
user_id += rand() % 100000 + 1;
}
//==== Post User Info To Server ====//
char poststr[256];
sprintf( poststr, "postvar1=%d&postvar2=%d\r\n", user_id, ver_no);
int poststrlen = strlen(poststr);
char* headers = "Content-Type: application/x-www-form-urlencoded \n";
void * ctx = 0;
ctx = xmlNanoHTTPMethod("http://www.openvsp.org/vspuse_post.php", "POST", poststr, NULL, headers, poststrlen );
if ( ctx )
xmlNanoHTTPClose(ctx);
ctx = 0;
//==== Open Settings File ====//
bool check_version_flag = true;
FILE* vsptime_fp = fopen( ".vsptime", "r" );
if ( vsptime_fp )
{
char str[256];
fgets( str, 256, vsptime_fp );
int vsp_time = atoi( str );
int del_time = (int)time(NULL) - vsp_time;
if ( del_time < 60*60*24*7 ) // Check Every Week
check_version_flag = false;
fclose( vsptime_fp );
}
//==== Enough Time Has Passed - Check For New Version ====//
if ( check_version_flag )
{
//==== Webpage with Version Info ====//
char * pContentType = 0;
ctx = xmlNanoHTTPOpen("http://www.openvsp.org/latest_version.html", &pContentType);
int retCode = xmlNanoHTTPReturnCode(ctx);
//==== Http Return Code 200 -> OK ====//
string contentStr;
if ( retCode == 200 )
{
char buf[2048];
int len = 1;
while (len > 0 && contentStr.size() < 10000 )
{
len = xmlNanoHTTPRead(ctx, buf, sizeof(buf));
contentStr.append( buf, len );
}
}
//==== Pulled A String From Server =====//
if ( contentStr.size() > 0 )
{
int major_ver, minor_ver, change_ver;
bool valid = ExtractVersionNumber( contentStr, &major_ver, &minor_ver, &change_ver );
if ( valid )
{
if ( major_ver != VSP_VERSION_MAJOR ||minor_ver != VSP_VERSION_MINOR || change_ver != VSP_VERSION_CHANGE )
{
if ( screenMgrPtr )
screenMgrPtr->MessageBox("A new version of OpenVSP is available at http://www.openvsp.org/");
}
}
}
//===== Write Time =====//
FILE* vsptime_fp = fopen( ".vsptime", "w" );
if ( vsptime_fp )
{
fprintf( vsptime_fp, "%d", time(NULL) );
fclose( vsptime_fp );
}
}
if ( ctx )
xmlNanoHTTPClose(ctx);
xmlNanoHTTPCleanup();
}
/**
* Returns the contents of the requested URL
*
* @param pczURL The URL to retrieve.
* @param piRetCode The return code supplied with the response.
* @param piDataSize The resulting data length [out].
*
* @return A pointer to a null-terminated buffer containing the textual
* representation of the response. Must be freed by the caller.
*/
gpointer
getURL(const gchar * pczURL, gint * piRetCode, gint * piDataSize)
{
/* nanohttp magic */
#define iBufReadSize 1024
gint iReadSize = 0;
gint iCurrSize = 0;
gpointer pInBuffer = NULL;
gpointer pInBufferRef = NULL;
gchar cReadBuffer[iBufReadSize];
bzero(cReadBuffer, iBufReadSize);
xmlNanoHTTPInit();
char * pContentType = NULL;
void * pHTTPContext = NULL;
pHTTPContext = xmlNanoHTTPOpen(pczURL, &pContentType);
if (!pHTTPContext)
{
// failure
cleanup(pHTTPContext, pContentType);
*piRetCode = -1;
return pInBuffer; // it's NULL
}
*piRetCode = xmlNanoHTTPReturnCode(pHTTPContext);
if (*piRetCode != HTTP_STATUS_OK)
{
// failure
cleanup(pHTTPContext, pContentType);
return pInBuffer; // it's NULL
}
while ((iReadSize = xmlNanoHTTPRead(pHTTPContext, cReadBuffer, iBufReadSize)) > 0)
{
// set return code
*piRetCode = xmlNanoHTTPReturnCode(pHTTPContext);
/* Maintain pointer to old location, free on failure */
pInBufferRef = pInBuffer;
pInBuffer = g_try_realloc(pInBuffer, iCurrSize + iReadSize);
if (!pInBuffer || *piRetCode != HTTP_STATUS_OK)
{
// failure
cleanup(pHTTPContext, pContentType);
g_free(pInBufferRef);
return pInBuffer; // it's NULL
}
memcpy(pInBuffer + iCurrSize, cReadBuffer, iReadSize);
iCurrSize += iReadSize;
// clear read buffer
bzero(cReadBuffer, iBufReadSize);
*piDataSize = iCurrSize;
}
if (iReadSize < 0)
{
// error
g_free(pInBuffer);
pInBuffer = NULL;
}
else
{
/* Maintain pointer to old location, free on failure */
pInBufferRef = pInBuffer;
// need to add '\0' at the end
pInBuffer = g_try_realloc(pInBuffer, iCurrSize + 1);
if (!pInBuffer)
{
// failure
g_free(pInBufferRef);
pInBuffer = NULL;
}
else
{
memcpy(pInBuffer + iCurrSize, "\0", 1);
}
}
// finish up
cleanup(pHTTPContext, pContentType);
return pInBuffer;
}
