| // Copyright 2020 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/browser/web_share_target/target_util.h" |
| |
| #include <sstream> |
| #include <utility> |
| |
| #include "base/files/file_path.h" |
| #include "base/strings/escape.h" |
| #include "base/time/time.h" |
| #include "build/build_config.h" |
| #include "net/base/mime_util.h" |
| #include "services/network/public/cpp/resource_request_body.h" |
| |
| namespace { |
| |
| void AddFile(const std::string& value_name, |
| const std::string& file_uri, |
| const std::string& file_name, |
| const std::string& content_type, |
| const std::string& boundary, |
| scoped_refptr<network::ResourceRequestBody> request_body) { |
| const char delimiter[] = "\r\n"; |
| const size_t delimiter_length = 2; |
| std::string mime_header; |
| // First line is the boundary. |
| mime_header.append("--" + boundary + delimiter); |
| // Next line is the Content-disposition. |
| mime_header.append("Content-Disposition: form-data; name=\"" + value_name + |
| "\""); |
| if (!file_name.empty()) { |
| mime_header.append("; filename=\"" + file_name + "\""); |
| } |
| mime_header.append(delimiter); |
| |
| if (!content_type.empty()) { |
| // If Content-type is specified, the next line is that. |
| mime_header.append("Content-Type: " + content_type + delimiter); |
| } |
| // Leave an empty line before appending the file_uri. |
| mime_header.append(delimiter); |
| |
| request_body->AppendBytes(mime_header.c_str(), mime_header.length()); |
| |
| request_body->AppendFileRange( |
| #if BUILDFLAG(IS_WIN) |
| base::FilePath::FromUTF8Unsafe(file_uri), |
| #else |
| base::FilePath(file_uri), |
| #endif |
| 0, -1, base::Time()); |
| |
| request_body->AppendBytes(delimiter, delimiter_length); |
| } |
| |
| void AddPlainText(const std::string& value_name, |
| const std::string& value, |
| const std::string& file_name, |
| const std::string& content_type, |
| const std::string& boundary, |
| scoped_refptr<network::ResourceRequestBody> request_body) { |
| std::string item; |
| if (file_name.empty()) { |
| net::AddMultipartValueForUpload(value_name, value, boundary, content_type, |
| &item); |
| } else { |
| net::AddMultipartValueForUploadWithFileName(value_name, file_name, value, |
| boundary, content_type, &item); |
| } |
| request_body->AppendBytes(item.c_str(), item.length()); |
| } |
| |
| } // namespace |
| |
| namespace web_share_target { |
| |
| std::string PercentEscapeString(const std::string& unescaped_string) { |
| std::ostringstream escaped_oss; |
| for (char c : unescaped_string) { |
| if (c == '"') { |
| escaped_oss << "%22"; |
| } else if (c == 0x0a) { |
| escaped_oss << "%0A"; |
| } else if (c == 0x0d) { |
| escaped_oss << "%0D"; |
| } else { |
| escaped_oss << c; |
| } |
| } |
| return escaped_oss.str(); |
| } |
| |
| scoped_refptr<network::ResourceRequestBody> ComputeMultipartBody( |
| const std::vector<std::string>& names, |
| const std::vector<std::string>& values, |
| const std::vector<bool>& is_value_file_uris, |
| const std::vector<std::string>& filenames, |
| const std::vector<std::string>& types, |
| const std::string& boundary) { |
| const size_t num_files = names.size(); |
| if (num_files != values.size() || num_files != is_value_file_uris.size() || |
| num_files != filenames.size() || num_files != types.size()) { |
| // The length of all arrays should always be the same for multipart POST. |
| // This should never happen. |
| return nullptr; |
| } |
| scoped_refptr<network::ResourceRequestBody> request_body = |
| new network::ResourceRequestBody(); |
| |
| for (size_t i = 0; i < num_files; i++) { |
| if (is_value_file_uris[i]) { |
| AddFile(PercentEscapeString(names[i]), values[i], |
| PercentEscapeString(filenames[i]), types[i], boundary, |
| request_body); |
| } else { |
| AddPlainText(PercentEscapeString(names[i]), values[i], |
| PercentEscapeString(filenames[i]), types[i], boundary, |
| request_body); |
| } |
| } |
| |
| std::string final_delimiter; |
| net::AddMultipartFinalDelimiterForUpload(boundary, &final_delimiter); |
| request_body->AppendBytes(final_delimiter.c_str(), final_delimiter.length()); |
| |
| return request_body; |
| } |
| |
| std::string ComputeUrlEncodedBody(const std::vector<std::string>& names, |
| const std::vector<std::string>& values) { |
| if (names.size() != values.size() || names.size() == 0) |
| return ""; |
| std::ostringstream application_body_oss; |
| application_body_oss << base::EscapeUrlEncodedData(names[0], true) << "=" |
| << base::EscapeUrlEncodedData(values[0], true); |
| for (size_t i = 1; i < names.size(); i++) |
| application_body_oss << "&" << base::EscapeUrlEncodedData(names[i], true) |
| << "=" << base::EscapeUrlEncodedData(values[i], true); |
| |
| return application_body_oss.str(); |
| } |
| |
| } // namespace web_share_target |