607 lines
16 KiB
C++
607 lines
16 KiB
C++
/*************************************************************************/
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/* http_request.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "http_request.h"
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void HTTPRequest::_redirect_request(const String& p_new_url) {
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}
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Error HTTPRequest::_request() {
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print_line("Requesting:\n\tURL: "+url+"\n\tString: "+request_string+"\n\tPort: "+itos(port)+"\n\tSSL: "+itos(use_ssl)+"\n\tValidate SSL: "+itos(validate_ssl));
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return client->connect(url,port,use_ssl,validate_ssl);
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}
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Error HTTPRequest::_parse_url(const String& p_url) {
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url=p_url;
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use_ssl=false;
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request_string="";
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port=80;
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request_sent=false;
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got_response=false;
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body_len=-1;
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body.resize(0);
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downloaded=0;
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redirections=0;
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print_line("1 url: "+url);
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if (url.begins_with("http://")) {
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url=url.substr(7,url.length()-7);
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print_line("no SSL");
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} else if (url.begins_with("https://")) {
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url=url.substr(8,url.length()-8);
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use_ssl=true;
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port=443;
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print_line("yes SSL");
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} else {
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ERR_EXPLAIN("Malformed URL");
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ERR_FAIL_V(ERR_INVALID_PARAMETER);
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}
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print_line("2 url: "+url);
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int slash_pos = url.find("/");
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if (slash_pos!=-1) {
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request_string=url.substr(slash_pos,url.length());
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url=url.substr(0,slash_pos);
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print_line("request string: "+request_string);
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} else {
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request_string="/";
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print_line("no request");
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}
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print_line("3 url: "+url);
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int colon_pos = url.find(":");
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if (colon_pos!=-1) {
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port=url.substr(colon_pos+1,url.length()).to_int();
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url=url.substr(0,colon_pos);
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ERR_FAIL_COND_V(port<1 || port > 65535,ERR_INVALID_PARAMETER);
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}
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print_line("4 url: "+url);
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return OK;
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}
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Error HTTPRequest::request(const String& p_url, const Vector<String>& p_custom_headers, bool p_ssl_validate_domain) {
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ERR_FAIL_COND_V(!is_inside_tree(),ERR_UNCONFIGURED);
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if ( requesting ) {
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ERR_EXPLAIN("HTTPRequest is processing a request. Wait for completion or cancel it before attempting a new one.");
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ERR_FAIL_V(ERR_BUSY);
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}
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Error err = _parse_url(p_url);
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if (err)
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return err;
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validate_ssl=p_ssl_validate_domain;
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bool has_user_agent=false;
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bool has_accept=false;
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headers=p_custom_headers;
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for(int i=0;i<headers.size();i++) {
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if (headers[i].findn("user-agent:")==0)
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has_user_agent=true;
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if (headers[i].findn("Accept:")==0)
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has_accept=true;
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}
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if (!has_user_agent) {
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headers.push_back("User-Agent: GodotEngine/"+String(VERSION_MKSTRING)+" ("+OS::get_singleton()->get_name()+")");
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}
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if (!has_accept) {
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headers.push_back("Accept: */*");
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}
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requesting=true;
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if (use_threads) {
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thread_done=false;
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thread_request_quit=false;
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client->set_blocking_mode(true);
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thread=Thread::create(_thread_func,this);
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} else {
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client->set_blocking_mode(false);
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err = _request();
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if (err!=OK) {
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call_deferred("_request_done",RESULT_CANT_CONNECT,0,StringArray(),ByteArray());
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return ERR_CANT_CONNECT;
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}
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set_process(true);
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}
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return OK;
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}
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void HTTPRequest::_thread_func(void *p_userdata) {
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HTTPRequest *hr = (HTTPRequest*)p_userdata;
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Error err = hr->_request();
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if (err!=OK) {
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hr->call_deferred("_request_done",RESULT_CANT_CONNECT,0,StringArray(),ByteArray());
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} else {
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while(!hr->thread_request_quit) {
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bool exit = hr->_update_connection();
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if (exit)
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break;
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OS::get_singleton()->delay_usec(1);
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}
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}
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hr->thread_done=true;
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}
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void HTTPRequest::cancel_request() {
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if (!requesting)
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return;
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if (!use_threads) {
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set_process(false);
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} else {
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thread_request_quit=true;
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Thread::wait_to_finish(thread);
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memdelete(thread);
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thread=NULL;
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}
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if (file) {
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memdelete(file);
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file=NULL;
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}
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client->close();
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body.resize(0);
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//downloaded=0;
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got_response=false;
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response_code=-1;
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//body_len=-1;
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request_sent=false;
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requesting=false;
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}
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bool HTTPRequest::_handle_response(bool *ret_value) {
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if (!client->has_response()) {
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call_deferred("_request_done",RESULT_NO_RESPONSE,0,StringArray(),ByteArray());
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*ret_value=true;
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return true;
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}
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got_response=true;
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response_code=client->get_response_code();
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List<String> rheaders;
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client->get_response_headers(&rheaders);
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response_headers.resize(0);
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downloaded=0;
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for (List<String>::Element *E=rheaders.front();E;E=E->next()) {
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print_line("HEADER: "+E->get());
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response_headers.push_back(E->get());
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}
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if (response_code==301 || response_code==302) {
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//redirect
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if (max_redirects>=0 && redirections>=max_redirects) {
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call_deferred("_request_done",RESULT_REDIRECT_LIMIT_REACHED,response_code,response_headers,ByteArray());
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*ret_value=true;
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return true;
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}
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String new_request;
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for (List<String>::Element *E=rheaders.front();E;E=E->next()) {
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if (E->get().findn("Location: ")!=-1) {
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new_request=E->get().substr(9,E->get().length()).strip_edges();
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}
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}
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print_line("NEW LOCATION: "+new_request);
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if (new_request!="") {
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//process redirect
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client->close();
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int new_redirs=redirections+1; //because _request() will clear it
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Error err;
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if (new_request.begins_with("http")) {
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//new url, request all again
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err=_parse_url(new_request);
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} else {
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request_string=new_request;
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}
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err = _request();
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print_line("new connection: "+itos(err));
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if (err==OK) {
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request_sent=false;
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got_response=false;
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body_len=-1;
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body.resize(0);
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downloaded=0;
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redirections=new_redirs;
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*ret_value=false;
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return true;
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}
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}
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}
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return false;
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}
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bool HTTPRequest::_update_connection() {
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switch( client->get_status() ) {
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case HTTPClient::STATUS_DISCONNECTED: {
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call_deferred("_request_done",RESULT_CANT_CONNECT,0,StringArray(),ByteArray());
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return true; //end it, since it's doing something
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} break;
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case HTTPClient::STATUS_RESOLVING: {
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client->poll();
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//must wait
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return false;
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} break;
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case HTTPClient::STATUS_CANT_RESOLVE: {
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call_deferred("_request_done",RESULT_CANT_RESOLVE,0,StringArray(),ByteArray());
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return true;
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} break;
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case HTTPClient::STATUS_CONNECTING: {
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client->poll();
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//must wait
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return false;
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} break; //connecting to ip
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case HTTPClient::STATUS_CANT_CONNECT: {
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call_deferred("_request_done",RESULT_CANT_CONNECT,0,StringArray(),ByteArray());
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return true;
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} break;
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case HTTPClient::STATUS_CONNECTED: {
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if (request_sent) {
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if (!got_response) {
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//no body
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bool ret_value;
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if (_handle_response(&ret_value))
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return ret_value;
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call_deferred("_request_done",RESULT_SUCCESS,response_code,response_headers,ByteArray());
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return true;
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}
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if (got_response && body_len<0) {
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//chunked transfer is done
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call_deferred("_request_done",RESULT_SUCCESS,response_code,response_headers,body);
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return true;
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}
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call_deferred("_request_done",RESULT_CHUNKED_BODY_SIZE_MISMATCH,response_code,response_headers,ByteArray());
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return true;
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//request migh have been done
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} else {
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//did not request yet, do request
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Error err = client->request(HTTPClient::METHOD_GET,request_string,headers);
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if (err!=OK) {
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call_deferred("_request_done",RESULT_CONNECTION_ERROR,0,StringArray(),ByteArray());
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return true;
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}
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request_sent=true;
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return false;
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}
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} break; //connected: { } break requests only accepted here
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case HTTPClient::STATUS_REQUESTING: {
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//must wait, it's requesting
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client->poll();
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return false;
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} break; // request in progress
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case HTTPClient::STATUS_BODY: {
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if (!got_response) {
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bool ret_value;
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if (_handle_response(&ret_value))
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return ret_value;
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if (!client->is_response_chunked() && client->get_response_body_length()==0) {
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call_deferred("_request_done",RESULT_SUCCESS,response_code,response_headers,ByteArray());
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return true;
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}
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if (client->is_response_chunked()) {
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body_len=-1; //no body len because chunked, change your webserver configuration if you want body len
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} else {
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body_len=client->get_response_body_length();
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if (body_size_limit>=0 && body_len>body_size_limit) {
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call_deferred("_request_done",RESULT_BODY_SIZE_LIMIT_EXCEEDED,response_code,response_headers,ByteArray());
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return true;
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}
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}
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if (download_to_file!=String()) {
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file=FileAccess::open(download_to_file,FileAccess::WRITE);
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if (!file) {
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call_deferred("_request_done",RESULT_DOWNLOAD_FILE_CANT_OPEN,response_code,response_headers,ByteArray());
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return true;
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}
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}
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}
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//print_line("BODY: "+itos(body.size()));
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client->poll();
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ByteArray chunk = client->read_response_body_chunk();
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downloaded+=chunk.size();
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if (file) {
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ByteArray::Read r=chunk.read();
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file->store_buffer(r.ptr(),chunk.size());
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if (file->get_error()!=OK) {
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call_deferred("_request_done",RESULT_DOWNLOAD_FILE_WRITE_ERROR,response_code,response_headers,ByteArray());
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return true;
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}
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} else {
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body.append_array(chunk);
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}
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if (body_size_limit>=0 && downloaded>body_size_limit) {
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call_deferred("_request_done",RESULT_BODY_SIZE_LIMIT_EXCEEDED,response_code,response_headers,ByteArray());
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return true;
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}
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if (body_len>=0) {
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if (downloaded==body_len) {
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call_deferred("_request_done",RESULT_SUCCESS,response_code,response_headers,body);
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return true;
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}
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/*if (body.size()>=body_len) {
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call_deferred("_request_done",RESULT_BODY_SIZE_MISMATCH,response_code,response_headers,ByteArray());
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return true;
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}*/
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}
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return false;
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} break; // request resulted in body: { } break which must be read
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case HTTPClient::STATUS_CONNECTION_ERROR: {
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call_deferred("_request_done",RESULT_CONNECTION_ERROR,0,StringArray(),ByteArray());
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return true;
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} break;
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case HTTPClient::STATUS_SSL_HANDSHAKE_ERROR: {
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call_deferred("_request_done",RESULT_SSL_HANDSHAKE_ERROR,0,StringArray(),ByteArray());
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return true;
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} break;
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}
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ERR_FAIL_V(false);
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}
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void HTTPRequest::_request_done(int p_status, int p_code, const StringArray& headers, const ByteArray& p_data) {
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cancel_request();
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emit_signal("request_completed",p_status,p_code,headers,p_data);
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}
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void HTTPRequest::_notification(int p_what) {
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if (p_what==NOTIFICATION_PROCESS) {
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if (use_threads)
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return;
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bool done = _update_connection();
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if (done) {
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set_process(false);
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//cancel_request(); called from _request done now
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}
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}
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if (p_what==NOTIFICATION_EXIT_TREE) {
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if (requesting) {
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cancel_request();
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}
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}
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}
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void HTTPRequest::set_use_threads(bool p_use) {
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ERR_FAIL_COND( status!=HTTPClient::STATUS_DISCONNECTED );
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use_threads=p_use;
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}
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bool HTTPRequest::is_using_threads() const {
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return use_threads;
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}
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void HTTPRequest::set_body_size_limit(int p_bytes) {
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ERR_FAIL_COND( status!=HTTPClient::STATUS_DISCONNECTED );
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body_size_limit=p_bytes;
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}
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int HTTPRequest::get_body_size_limit() const {
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return body_size_limit;
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}
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void HTTPRequest::set_download_file(const String& p_file) {
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ERR_FAIL_COND( status!=HTTPClient::STATUS_DISCONNECTED );
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download_to_file=p_file;
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}
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String HTTPRequest::get_download_file() const {
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return download_to_file;
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}
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HTTPClient::Status HTTPRequest::get_http_client_status() const {
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return client->get_status();
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}
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void HTTPRequest::set_max_redirects(int p_max) {
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max_redirects=p_max;
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}
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int HTTPRequest::get_max_redirects() const{
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return max_redirects;
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}
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int HTTPRequest::get_downloaded_bytes() const {
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return downloaded;
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}
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int HTTPRequest::get_body_size() const{
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return body_len;
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}
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void HTTPRequest::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("request","url","custom_headers","ssl_validate_domain"),&HTTPRequest::request,DEFVAL(StringArray()),DEFVAL(true));
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ObjectTypeDB::bind_method(_MD("cancel_request"),&HTTPRequest::cancel_request);
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ObjectTypeDB::bind_method(_MD("get_http_client_status"),&HTTPRequest::get_http_client_status);
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ObjectTypeDB::bind_method(_MD("set_use_threads","enable"),&HTTPRequest::set_use_threads);
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ObjectTypeDB::bind_method(_MD("is_using_threads"),&HTTPRequest::is_using_threads);
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ObjectTypeDB::bind_method(_MD("set_body_size_limit","bytes"),&HTTPRequest::set_body_size_limit);
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ObjectTypeDB::bind_method(_MD("get_body_size_limit"),&HTTPRequest::get_body_size_limit);
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ObjectTypeDB::bind_method(_MD("set_max_redirects","amount"),&HTTPRequest::set_max_redirects);
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ObjectTypeDB::bind_method(_MD("get_max_redirects"),&HTTPRequest::get_max_redirects);
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ObjectTypeDB::bind_method(_MD("set_download_file","path"),&HTTPRequest::set_download_file);
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ObjectTypeDB::bind_method(_MD("get_download_file"),&HTTPRequest::get_download_file);
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ObjectTypeDB::bind_method(_MD("get_downloaded_bytes"),&HTTPRequest::get_downloaded_bytes);
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ObjectTypeDB::bind_method(_MD("get_body_size"),&HTTPRequest::get_body_size);
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ObjectTypeDB::bind_method(_MD("_redirect_request"),&HTTPRequest::_redirect_request);
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ObjectTypeDB::bind_method(_MD("_request_done"),&HTTPRequest::_request_done);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL,"use_threads"),_SCS("set_use_threads"),_SCS("is_using_threads"));
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT,"body_size_limit",PROPERTY_HINT_RANGE,"-1,2000000000"),_SCS("set_body_size_limit"),_SCS("get_body_size_limit"));
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT,"max_redirects",PROPERTY_HINT_RANGE,"-1,1024"),_SCS("set_max_redirects"),_SCS("get_max_redirects"));
|
|
|
|
ADD_SIGNAL(MethodInfo("request_completed",PropertyInfo(Variant::INT,"result"),PropertyInfo(Variant::INT,"response_code"),PropertyInfo(Variant::STRING_ARRAY,"headers"),PropertyInfo(Variant::RAW_ARRAY,"body")));
|
|
|
|
BIND_CONSTANT( RESULT_SUCCESS );
|
|
//BIND_CONSTANT( RESULT_NO_BODY );
|
|
BIND_CONSTANT( RESULT_CHUNKED_BODY_SIZE_MISMATCH );
|
|
BIND_CONSTANT( RESULT_CANT_CONNECT );
|
|
BIND_CONSTANT( RESULT_CANT_RESOLVE );
|
|
BIND_CONSTANT( RESULT_CONNECTION_ERROR );
|
|
BIND_CONSTANT( RESULT_SSL_HANDSHAKE_ERROR );
|
|
BIND_CONSTANT( RESULT_NO_RESPONSE );
|
|
BIND_CONSTANT( RESULT_BODY_SIZE_LIMIT_EXCEEDED );
|
|
BIND_CONSTANT( RESULT_REQUEST_FAILED );
|
|
BIND_CONSTANT( RESULT_DOWNLOAD_FILE_CANT_OPEN );
|
|
BIND_CONSTANT( RESULT_DOWNLOAD_FILE_WRITE_ERROR );
|
|
BIND_CONSTANT( RESULT_REDIRECT_LIMIT_REACHED );
|
|
|
|
}
|
|
|
|
HTTPRequest::HTTPRequest()
|
|
{
|
|
|
|
thread=NULL;
|
|
|
|
port=80;
|
|
redirections=0;
|
|
max_redirects=8;
|
|
body_len=-1;
|
|
got_response=false;
|
|
validate_ssl=false;
|
|
use_ssl=false;
|
|
response_code=0;
|
|
request_sent=false;
|
|
requesting=false;
|
|
client.instance();
|
|
use_threads=false;
|
|
thread_done=false;
|
|
body_size_limit=-1;
|
|
file=NULL;
|
|
status=HTTPClient::STATUS_DISCONNECTED;
|
|
|
|
}
|
|
|
|
HTTPRequest::~HTTPRequest() {
|
|
if (file)
|
|
memdelete(file);
|
|
}
|