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// Copyright (c) 2006, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// HTTPUpload provides a "nice" API to send a multipart HTTP(S) POST
// request using wininet. It currently supports requests that contain
// a set of string parameters (key/value pairs), and a file to upload.
#ifndef COMMON_WINDOWS_HTTP_UPLOAD_H__
#define COMMON_WINDOWS_HTTP_UPLOAD_H__
#pragma warning( push )
// Disable exception handler warnings.
#pragma warning( disable : 4530 )
#include <Windows.h>
#include <WinInet.h>
#include <map>
#include <string>
#include <vector>
namespace google_airbag {
using std::string;
using std::wstring;
using std::map;
using std::vector;
class HTTPUpload {
public:
// Sends the given set of parameters, along with the contents of
// upload_file, as a multipart POST request to the given URL.
// file_part_name contains the name of the file part of the request
// (i.e. it corresponds to the name= attribute on an <input type="file">.
// Parameter names must contain only printable ASCII characters,
// and may not contain a quote (") character.
// Only HTTP(S) URLs are currently supported. Returns true on success.
// If the request is successful and response_body is non-NULL,
// the response body will be returned in response_body.
// If response_code is non-NULL, it will be set to the HTTP response code
// received (or 0 if the request failed before getting an HTTP response).
static bool SendRequest(const wstring &url,
const map<wstring, wstring> ¶meters,
const wstring &upload_file,
const wstring &file_part_name,
wstring *response_body,
int *response_code);
private:
class AutoInternetHandle;
// Retrieves the HTTP response. If NULL is passed in for response,
// this merely checks (via the return value) that we were successfully
// able to retrieve exactly as many bytes of content in the response as
// were specified in the Content-Length header.
static bool HTTPUpload::ReadResponse(HINTERNET request, wstring* response);
// Generates a new multipart boundary for a POST request
static wstring GenerateMultipartBoundary();
// Generates a HTTP request header for a multipart form submit.
static wstring GenerateRequestHeader(const wstring &boundary);
// Given a set of parameters, an upload filename, and a file part name,
// generates a multipart request body string with these parameters
// and minidump contents. Returns true on success.
static bool GenerateRequestBody(const map<wstring, wstring> ¶meters,
const wstring &upload_file,
const wstring &file_part_name,
const wstring &boundary,
string *request_body);
// Fills the supplied vector with the contents of filename.
static void GetFileContents(const wstring &filename, vector<char> *contents);
// Converts a UTF8 string to UTF16.
static wstring UTF8ToWide(const string &utf8);
// Converts a UTF16 string to UTF8.
static string WideToUTF8(const wstring &wide);
// Checks that the given list of parameters has only printable
// ASCII characters in the parameter name, and does not contain
// any quote (") characters. Returns true if so.
static bool CheckParameters(const map<wstring, wstring> ¶meters);
// No instances of this class should be created.
// Disallow all constructors, destructors, and operator=.
HTTPUpload();
explicit HTTPUpload(const HTTPUpload &);
void operator=(const HTTPUpload &);
~HTTPUpload();
};
} // namespace google_airbag
#pragma warning( pop )
#endif // COMMON_WINDOWS_HTTP_UPLOAD_H__
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