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winhttp: Cache script in download_script().

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This commit is contained in:
Paul Gofman 2022-11-23 17:32:47 -06:00 committed by Alexandre Julliard
parent cbfe940a1e
commit 71fdd64bc6
1 changed files with 52 additions and 2 deletions
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54
dlls/winhttp/session.c
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@ -1901,6 +1901,50 @@ static BOOL parse_script_result( const char *result, WINHTTP_PROXY_INFO *info )
return TRUE;
}
static SRWLOCK cache_lock = SRWLOCK_INIT;
static DWORD cached_script_size;
static ULONGLONG cache_update_time;
static char *cached_script;
static WCHAR *cached_url;
static BOOL get_cached_script( const WCHAR *url, char **buffer, DWORD *out_size )
{
BOOL ret = FALSE;
*buffer = NULL;
*out_size = 0;
AcquireSRWLockExclusive( &cache_lock );
if (cached_url && !wcscmp( cached_url, url ) && GetTickCount64() - cache_update_time < 60000)
{
ret = TRUE;
if (cached_script && (*buffer = malloc( cached_script_size )))
{
memcpy( *buffer, cached_script, cached_script_size );
*out_size = cached_script_size;
}
}
ReleaseSRWLockExclusive( &cache_lock );
return ret;
}
static void cache_script( const WCHAR *url, char *buffer, DWORD size )
{
AcquireSRWLockExclusive( &cache_lock );
free( cached_url );
free( cached_script );
cached_script_size = 0;
cached_script = NULL;
if ((cached_url = wcsdup( url )) && buffer && (cached_script = malloc( size )))
{
memcpy( cached_script, buffer, size );
cached_script_size = size;
}
cache_update_time = GetTickCount64();
ReleaseSRWLockExclusive( &cache_lock );
}
static char *download_script( const WCHAR *url, DWORD *out_size )
{
static const WCHAR *acceptW[] = {L"*/*", NULL};
@ -1908,9 +1952,14 @@ static char *download_script( const WCHAR *url, DWORD *out_size )
WCHAR *hostname;
URL_COMPONENTSW uc;
DWORD status, size = sizeof(status), offset, to_read, bytes_read, flags = 0;
char *tmp, *buffer = NULL;
char *tmp, *buffer;
*out_size = 0;
if (get_cached_script( url, &buffer, out_size ))
{
TRACE( "Returning cached result.\n" );
if (!buffer) SetLastError( ERROR_WINHTTP_UNABLE_TO_DOWNLOAD_SCRIPT );
return buffer;
}
memset( &uc, 0, sizeof(uc) );
uc.dwStructSize = sizeof(uc);
@ -1957,6 +2006,7 @@ done:
WinHttpCloseHandle( con );
WinHttpCloseHandle( ses );
free( hostname );
cache_script( url, buffer, *out_size );
if (!buffer) SetLastError( ERROR_WINHTTP_UNABLE_TO_DOWNLOAD_SCRIPT );
return buffer;
}