/*--------------------------------------------------------------------------*/
static BOOL isValidURL(char *szURL)
{
HINTERNET hiConnex = NULL;
/* * / * : /*rfc 2616 protocole http. all files type accepted*/
char szHeader[]="Accept: */*\r\n\r\n";
HINTERNET hiDownload;
DWORD dwStatus = 0;
DWORD dwStatusSize = sizeof(dwStatus);
DWORD dwIndex = 0;
hiConnex = dynlib_InternetOpen("Scilab_Download", OPENURL_MODE,NULL,NULL,0);
if(hiConnex == NULL) return HTTP_DOWNLOAD_ERROR_INTERNET_OPEN;
hiDownload = dynlib_InternetOpenUrl(hiConnex,szURL,szHeader,lstrlen(szHeader),INTERNET_FLAG_DONT_CACHE | INTERNET_FLAG_RELOAD | INTERNET_FLAG_PRAGMA_NOCACHE,0);
if(!hiDownload)
{
dynlib_InternetCloseHandle(hiConnex);
return FALSE;
}
dynlib_HttpQueryInfo(hiDownload, HTTP_QUERY_STATUS_CODE|HTTP_QUERY_FLAG_NUMBER, &dwStatus, &dwStatusSize, &dwIndex);
dynlib_InternetCloseHandle(hiConnex);
dynlib_InternetCloseHandle(hiDownload);
/* HTTP OK */
if (dwStatus == HTTP_STATUS_OK ) return TRUE;
return FALSE;
}
/*--------------------------------------------------------------------------*/
httpdownloadfile_error_code httpDownloadFile(char * szURL, char * szSaveFilePath)
{
HINTERNET hiConnex = NULL;
/* * / * : /*rfc 2616 protocole http. all files type accepted*/
char szHeader[] = "Accept: */*\r\n\r\n";
HINTERNET hiDownload;
hiConnex = dynlib_InternetOpen("Scilab_Download", OPENURL_MODE, NULL, NULL, 0);
if (hiConnex == NULL)
{
return HTTP_DOWNLOAD_ERROR_INTERNET_OPEN;
}
hiDownload = dynlib_InternetOpenUrl(hiConnex, szURL, szHeader, lstrlen(szHeader), INTERNET_FLAG_DONT_CACHE | INTERNET_FLAG_RELOAD | INTERNET_FLAG_PRAGMA_NOCACHE, 0);
if (!hiDownload)
{
dynlib_InternetCloseHandle(hiConnex);
return HTTP_DOWNLOAD_ERROR_OPEN_URL;
}
else
{
DWORD dwStatus = 0;
DWORD dwStatusSize = sizeof(dwStatus);
DWORD dwIndex = 0;
dynlib_HttpQueryInfo(hiDownload, HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER, &dwStatus, &dwStatusSize, &dwIndex);
if (dwStatus != HTTP_STATUS_OK)
{
dynlib_InternetCloseHandle(hiConnex);
dynlib_InternetCloseHandle(hiDownload);
return HTTP_DOWNLOAD_ERROR_INVALID_URL;
}
else
{
HANDLE haFile;
haFile = CreateFile(szSaveFilePath, GENERIC_WRITE, FILE_SHARE_WRITE, 0, CREATE_ALWAYS, 0, 0);
if (haFile == INVALID_HANDLE_VALUE)
{
dynlib_InternetCloseHandle(hiConnex);
return HTTP_DOWNLOAD_ERROR_CREATEFILE;
}
else
{
char *szBuff = NULL;
DWORD dwBytesRequired = 0;
DWORD dwSizeOfByReq = 4;
DWORD dwBytesRead = 0;
DWORD dwBytesWritten = 0;
/* Get file size */
if (!dynlib_HttpQueryInfo(hiDownload, HTTP_QUERY_CONTENT_LENGTH | HTTP_QUERY_FLAG_NUMBER, (LPVOID)&dwBytesRequired, &dwSizeOfByReq, 0))
{
dynlib_InternetCloseHandle(hiConnex);
return HTTP_DOWNLOAD_ERROR_INVALID_FILE_SIZE;
}
else
{
if (dwBytesRequired > MO)
{
szBuff = (char*)MALLOC(MO);
if (szBuff == NULL)
{
CloseHandle(haFile);
dynlib_InternetCloseHandle(hiConnex);
return HTTP_DOWNLOAD_OUTOFMEMORY;
}
}
else
{
szBuff = (char*)MALLOC(dwBytesRequired);
if (szBuff == NULL)
{
CloseHandle(haFile);
dynlib_InternetCloseHandle(hiConnex);
return HTTP_DOWNLOAD_OUTOFMEMORY;
}
}
while (dwBytesRequired > 0)
{
/* we read 1Mo from file. */
if (dwBytesRequired >= MO)
{
if (!dynlib_InternetReadFile(hiDownload, szBuff, MO, &dwBytesRead) || dwBytesRead != MO)
{
CloseHandle(haFile);
dynlib_InternetCloseHandle(hiConnex);
FREE(szBuff);
return HTTP_DOWNLOAD_ERROR_INTERNET_READFILE;
}
dwBytesRequired -= MO;
/* we write buffer */
if (!WriteFile(haFile, szBuff, MO, &dwBytesWritten, NULL) || dwBytesWritten != MO)
{
CloseHandle(haFile);
dynlib_InternetCloseHandle(hiConnex);
FREE(szBuff);
return HTTP_DOWNLOAD_ERROR_WRITEFILE;
}
}
else
{
if (!dynlib_InternetReadFile(hiDownload, szBuff, dwBytesRequired, &dwBytesRead) || dwBytesRead != dwBytesRequired)
{
CloseHandle(haFile);
dynlib_InternetCloseHandle(hiConnex);
FREE(szBuff);
return HTTP_DOWNLOAD_ERROR_INTERNET_READFILE;
}
/* we write buffer in a backup file*/
if (!WriteFile(haFile, szBuff, dwBytesRequired, &dwBytesWritten, NULL) || dwBytesWritten != dwBytesRequired)
{
CloseHandle(haFile);
dynlib_InternetCloseHandle(hiConnex);
FREE(szBuff);
return HTTP_DOWNLOAD_ERROR_WRITEFILE;
}
dwBytesRequired = 0;
}
}
dynlib_InternetCloseHandle(hiConnex);
CloseHandle(haFile);
FREE(szBuff);
return HTTP_DOWNLOAD_ERROR_OK;
}
}
}
}
}