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header check for gzip files

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This commit is contained in:
krunal1313 2023-06-23 15:32:11 +05:30
parent 22957fbe03
commit 3b95f2051a
1 changed files with 27 additions and 26 deletions
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53
src/http_server.cpp
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@ -635,44 +635,45 @@ int HttpServer::async_req_cb(void *ctx, int is_end_stream) {
if(can_process_async || is_end_stream) {
// For async streaming requests, handler should be invoked for every aggregated chunk
// For a non streaming request, buffer body and invoke only at the end
if(!zstream_initialized) {
if(!zstream_initialized &&
(31 == (int)request->body[0] && -117 == (int)request->body[1])) { //gzip header
if (inflateInit2(&zs, 16 + MAX_WBITS) != Z_OK)
throw (std::runtime_error("inflateInit failed while decompressing."));
zstream_initialized = true;
}
std::string outbuffer;
outbuffer.resize(10 * request->body.size());
if(zstream_initialized) {
std::string outbuffer;
outbuffer.resize(10 * request->body.size());
zs.next_in = (Bytef *) request->body.c_str();
zs.avail_in = request->body.size();
std::size_t size_uncompressed = 0;
int ret = 0;
do
{
zs.avail_out = static_cast<unsigned int>(outbuffer.size());
zs.next_out = reinterpret_cast<Bytef*>(&outbuffer[0] + size_uncompressed);
ret = inflate(&zs, Z_FINISH);
if (ret != Z_STREAM_END && ret != Z_OK && ret != Z_BUF_ERROR)
{
std::string error_msg = zs.msg;
zs.next_in = (Bytef *) request->body.c_str();
zs.avail_in = request->body.size();
std::size_t size_uncompressed = 0;
int ret = 0;
do {
zs.avail_out = static_cast<unsigned int>(outbuffer.size());
zs.next_out = reinterpret_cast<Bytef *>(&outbuffer[0] + size_uncompressed);
ret = inflate(&zs, Z_FINISH);
if (ret != Z_STREAM_END && ret != Z_OK && ret != Z_BUF_ERROR) {
std::string error_msg = zs.msg;
inflateEnd(&zs);
throw std::runtime_error(error_msg);
}
size_uncompressed += (outbuffer.size() - zs.avail_out);
} while (zs.avail_out == 0);
if (ret == Z_STREAM_END) {
inflateEnd(&zs);
throw std::runtime_error(error_msg);
zstream_initialized = false;
}
size_uncompressed += (outbuffer.size() - zs.avail_out);
} while (zs.avail_out == 0);
outbuffer.resize(size_uncompressed);
if(ret == Z_STREAM_END) {
inflateEnd(&zs);
zstream_initialized = false;
request->body = outbuffer;
request->chunk_len = outbuffer.size();
}
outbuffer.resize(size_uncompressed);
request->body = outbuffer;
request->chunk_len = outbuffer.size();
if(request->first_chunk_aggregate) {
request->first_chunk_aggregate = false;
}