From 1d32712f6adedc248fb3c2bb4239d8a5d9696c4b Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Sun, 14 Oct 2018 19:08:15 +0300
Subject: [PATCH] HttpReader: allow empty filename.

GitOrigin-RevId: ad65a2e603d4628c6a4d29d26300a113303d0c27
---
 tdnet/td/net/HttpReader.cpp | 4 +++-
 tdnet/td/net/HttpReader.h   | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/tdnet/td/net/HttpReader.cpp b/tdnet/td/net/HttpReader.cpp
index 1ab76e421..e8021f753 100644
--- a/tdnet/td/net/HttpReader.cpp
+++ b/tdnet/td/net/HttpReader.cpp
@@ -290,6 +290,7 @@ Result<bool> HttpReader::parse_multipart_form_data() {
           file_field_name_.clear();
           field_content_type_ = "application/octet-stream";
           file_name_.clear();
+          has_file_name_ = false;
           CHECK(temp_file_.empty());
           temp_file_name_.clear();
 
@@ -349,6 +350,7 @@ Result<bool> HttpReader::parse_multipart_form_data() {
                   field_name_ = value;
                 } else if (key == "filename") {
                   file_name_ = value.str();
+                  has_file_name_ = true;
                 } else {
                   // ignore unknown parts of header
                 }
@@ -368,7 +370,7 @@ Result<bool> HttpReader::parse_multipart_form_data() {
             return Status::Error(400, "Bad Request: field name in multipart/form-data not found");
           }
 
-          if (!file_name_.empty()) {
+          if (has_file_name_) {
             // file
             if (query_->files_.size() == max_files_) {
               return Status::Error(413, "Request Entity Too Large: too much files attached");
diff --git a/tdnet/td/net/HttpReader.h b/tdnet/td/net/HttpReader.h
index 7a2a1c17f..29e822147 100644
--- a/tdnet/td/net/HttpReader.h
+++ b/tdnet/td/net/HttpReader.h
@@ -80,6 +80,7 @@ class HttpReader {
   string file_field_name_;
   string field_content_type_;
   string file_name_;
+  bool has_file_name_ = false;
   FileFd temp_file_;
   string temp_file_name_;
   int64 file_size_;