542 lines
16 KiB
C++
542 lines
16 KiB
C++
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/*
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; Project: Open Vehicle Monitor System
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; Date: 14th March 2017
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;
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; Changes:
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; 1.0 Initial release
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;
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; (C) 2011 Michael Stegen / Stegen Electronics
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; (C) 2011-2017 Mark Webb-Johnson
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; (C) 2011 Sonny Chen @ EPRO/DX
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;
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; Permission is hereby granted, free of charge, to any person obtaining a copy
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; of this software and associated documentation files (the "Software"), to deal
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; in the Software without restriction, including without limitation the rights
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; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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; copies of the Software, and to permit persons to whom the Software is
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; furnished to do so, subject to the following conditions:
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;
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; The above copyright notice and this permission notice shall be included in
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; 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, EXPRESS OR
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; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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; THE SOFTWARE.
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*/
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#include <sdkconfig.h>
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#ifdef CONFIG_OVMS_SC_GPL_MONGOOSE
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#include "ovms_log.h"
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static const char *TAG = "ovms-duk-http";
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#include <string>
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#include <fstream>
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#include <iostream>
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#include <string.h>
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#include <stdio.h>
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#include <dirent.h>
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#include <esp_task_wdt.h>
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#include "ovms_malloc.h"
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#include "ovms_module.h"
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#include "ovms_duktape.h"
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#include "ovms_config.h"
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#include "ovms_command.h"
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#include "ovms_events.h"
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#include "console_async.h"
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#include "buffered_shell.h"
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#include "ovms_netmanager.h"
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#include "ovms_tls.h"
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////////////////////////////////////////////////////////////////////////////////
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// DuktapeHTTPRequest
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////////////////////////////////////////////////////////////////////////////////
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// DuktapeHTTPRequest: perform asynchronous HTTP request
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// - uses GET/POST (if post data is given)
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// - follows 301/302 redirects automatically (max 5 hops)
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// - automatically prevents garbage collection while active
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// - Note: any valid server response is considered a success (= triggers done callback)
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// - TODO: implement request.abort() method
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// - TODO: implement digest authentication
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//
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// Javascript API:
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// create:
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// var request = HTTP.Request({
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// url: "…",
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// [headers: [{ "key": "value", … }, …]] // Note: array members may contain multiple headers
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// [post: "foo=bar&…",] // assumed x-www-form-urlencoded w/o Content-Type
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// [timeout: ms,] // default: 120 seconds
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// [binary: bool,] // default: false
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// [done: function(response){},]
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// [fail: function(error){},]
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// });
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//
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// done(): (this = request, response = request.response)
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// request.response = {
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// statusCode: e.g. 200,
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// statusText: e.g. "OK",
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// [body: <string>,] // if binary=false
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// [data: <Uint8Array>,] // if binary=true
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// headers: [{ key: value }, …],
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// }
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//
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// fail(): (this = request, error = request.error)
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// request.error = "error description"
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//
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// also:
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// request.url = last URL used if redirected
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// request.redirectCount = number of redirects
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class DuktapeHTTPRequest : public DuktapeObject
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{
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public:
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DuktapeHTTPRequest(duk_context *ctx, int obj_idx);
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~DuktapeHTTPRequest();
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static duk_ret_t Create(duk_context *ctx);
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protected:
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bool StartRequest(duk_context *ctx=NULL);
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public:
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static void MongooseCallbackEntry(struct mg_connection *nc, int ev, void *ev_data);
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void MongooseCallback(struct mg_connection *nc, int ev, void *ev_data);
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public:
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duk_ret_t CallMethod(duk_context *ctx, const char* method, void* data=NULL);
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protected:
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extram::string m_url;
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int m_redirectcnt = 0;
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bool m_ispost = false;
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extram::string m_post;
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int m_timeout = 120*1000;
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bool m_binary = false;
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extram::string m_headers;
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extram::string m_error;
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struct mg_connection *m_mgconn = NULL;
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int m_response_status = 0;
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extram::string m_response_statusmsg;
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extram::string m_response_body;
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std::list<std::pair<extram::string, extram::string>> m_response_headers;
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};
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DuktapeHTTPRequest::DuktapeHTTPRequest(duk_context *ctx, int obj_idx)
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: DuktapeObject(ctx, obj_idx)
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{
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// get args:
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duk_require_stack(ctx, 5);
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if (duk_get_prop_string(ctx, 0, "url"))
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m_url = duk_to_string(ctx, -1);
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duk_pop(ctx);
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if (duk_get_prop_string(ctx, 0, "post"))
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{
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m_ispost = true;
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m_post = duk_to_string(ctx, -1);
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}
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duk_pop(ctx);
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if (duk_get_prop_string(ctx, 0, "timeout"))
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m_timeout = duk_to_int(ctx, -1);
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duk_pop(ctx);
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if (duk_get_prop_string(ctx, 0, "binary"))
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m_binary = duk_to_boolean(ctx, -1);
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duk_pop(ctx);
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if (m_url.empty())
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{
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m_error = "missing argument: url";
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CallMethod(ctx, "fail");
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return;
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}
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// …request headers:
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extram::string key, val;
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bool have_useragent = false, have_contenttype = false;
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duk_get_prop_string(ctx, 0, "headers");
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if (duk_is_array(ctx, -1))
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{
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for (int i=0; true; i++)
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{
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if (!duk_get_prop_index(ctx, -1, i))
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{
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// array end
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duk_pop(ctx);
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break;
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}
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if (duk_is_object(ctx, -1))
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{
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duk_enum(ctx, -1, 0);
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while (duk_next(ctx, -1, true))
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{
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key = duk_to_string(ctx, -2);
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val = duk_to_string(ctx, -1);
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duk_pop_2(ctx);
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m_headers.append(key);
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m_headers.append(": ");
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m_headers.append(val);
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m_headers.append("\r\n");
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if (key == "User-Agent")
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have_useragent = true;
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else if (key == "Content-Type")
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have_contenttype = true;
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}
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duk_pop(ctx); // enum
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}
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duk_pop(ctx); // array element
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}
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}
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duk_pop(ctx); // [array]
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// add defaults:
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if (!have_useragent)
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{
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m_headers.append("User-Agent: ");
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m_headers.append(get_user_agent().c_str());
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m_headers.append("\r\n");
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}
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if (m_ispost && !have_contenttype)
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{
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m_headers.append("Content-Type: application/x-www-form-urlencoded\r\n");
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}
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// check network:
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if (!MyNetManager.MongooseRunning() || !MyNetManager.m_connected_any)
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{
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m_error = "network unavailable";
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CallMethod(ctx, "fail");
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return;
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}
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// start initial request:
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if (StartRequest(ctx))
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{
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// running, prevent deletion & GC:
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Ref();
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Register(ctx);
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ESP_LOGD(TAG, "DuktapeHTTPRequest: started '%s'", m_url.c_str());
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}
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}
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bool DuktapeHTTPRequest::StartRequest(duk_context *ctx /*=NULL*/)
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{
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// create connection:
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m_mgconn = NULL;
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struct mg_mgr* mgr = MyNetManager.GetMongooseMgr();
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struct mg_connect_opts opts = {};
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opts.user_data = this;
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const char* err;
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opts.error_string = &err;
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if (startsWith(m_url, "https://"))
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{
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#if MG_ENABLE_SSL
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opts.ssl_ca_cert = MyOvmsTLS.GetTrustedList();
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#else
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m_error = "SSL support disabled";
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ESP_LOGD(TAG, "DuktapeHTTPRequest: connect to '%s' failed: %s", m_url.c_str(), m_error.c_str());
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CallMethod(ctx, "fail");
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return false;
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#endif
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}
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m_mgconn = mg_connect_http_opt(mgr, MongooseCallbackEntry, opts,
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m_url.c_str(), m_headers.c_str(), m_ispost ? m_post.c_str() : NULL);
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if (!m_mgconn)
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{
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ESP_LOGD(TAG, "DuktapeHTTPRequest: connect to '%s' failed: %s", m_url.c_str(), err);
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m_error = (err && *err) ? err : "unknown";
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CallMethod(ctx, "fail");
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return false;
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}
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// connection created:
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if (m_timeout > 0)
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mg_set_timer(m_mgconn, mg_time() + (double)m_timeout / 1000);
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return true;
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}
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DuktapeHTTPRequest::~DuktapeHTTPRequest()
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{
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// ESP_LOGD(TAG, "~DuktapeHTTPRequest");
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if (m_mgconn)
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{
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m_mgconn->user_data = NULL;
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m_mgconn->flags |= MG_F_CLOSE_IMMEDIATELY;
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m_mgconn = NULL;
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}
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}
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duk_ret_t DuktapeHTTPRequest::Create(duk_context *ctx)
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{
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// var request = HTTP.Request({ args })
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DuktapeHTTPRequest* request = new DuktapeHTTPRequest(ctx, 0);
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request->Push(ctx);
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return 1;
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}
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void DuktapeHTTPRequest::MongooseCallbackEntry(struct mg_connection *nc, int ev, void *ev_data)
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{
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DuktapeHTTPRequest* me = (DuktapeHTTPRequest*)nc->user_data;
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if (me) me->MongooseCallback(nc, ev, ev_data);
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}
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void DuktapeHTTPRequest::MongooseCallback(struct mg_connection *nc, int ev, void *ev_data)
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{
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OvmsRecMutexLock lock(&m_mutex);
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if (nc != m_mgconn) return; // ignore events of previous connections
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switch (ev)
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{
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case MG_EV_CONNECT:
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{
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int err = *(int*) ev_data;
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const char* errdesc = strerror(err);
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ESP_LOGD(TAG, "DuktapeHTTPRequest: MG_EV_CONNECT err=%d/%s", err, errdesc);
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if (err)
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{
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#if MG_ENABLE_SSL
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if (err == MG_SSL_ERROR)
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m_error = "SSL error";
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else
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#endif
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m_error = (errdesc && *errdesc) ? errdesc : "unknown";
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RequestCallback("fail");
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nc->flags |= MG_F_CLOSE_IMMEDIATELY;
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}
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}
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break;
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case MG_EV_HTTP_REPLY:
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{
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// response is complete, store:
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http_message *hm = (http_message*) ev_data;
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ESP_LOGD(TAG, "DuktapeHTTPRequest: MG_EV_HTTP_REPLY status=%d bodylen=%d", hm->resp_code, hm->body.len);
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m_response_status = hm->resp_code;
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m_response_statusmsg.assign(hm->resp_status_msg.p, hm->resp_status_msg.len);
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m_response_body.assign(hm->body.p, hm->body.len);
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extram::string key, val, location;
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for (int i = 0; i < MG_MAX_HTTP_HEADERS && hm->header_names[i].len > 0; i++)
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{
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key.assign(hm->header_names[i].p, hm->header_names[i].len);
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val.assign(hm->header_values[i].p, hm->header_values[i].len);
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m_response_headers.push_back(std::make_pair(key, val));
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if (key == "Location") location = val;
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}
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// follow redirect?
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if (m_response_status == 301 || m_response_status == 302)
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{
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if (location.empty())
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{
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m_error = "redirect without location";
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RequestCallback("fail");
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}
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else if (++m_redirectcnt > 5)
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{
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m_error = "too many redirects";
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RequestCallback("fail");
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}
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else
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{
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ESP_LOGD(TAG, "DuktapeHTTPRequest: redirect code=%d to '%s'", m_response_status, location.c_str());
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m_url = location;
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m_response_status = 0;
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m_response_statusmsg.clear();
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m_response_body.clear();
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m_response_headers.clear();
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if (!StartRequest(NULL))
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RequestCallback("fail");
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}
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}
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else
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{
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RequestCallback("done");
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}
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// in any case, this connection is done:
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nc->flags |= MG_F_CLOSE_IMMEDIATELY;
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}
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break;
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case MG_EV_TIMER:
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{
|
||
|
|
ESP_LOGD(TAG, "DuktapeHTTPRequest: MG_EV_TIMER");
|
||
|
|
m_error = "timeout";
|
||
|
|
RequestCallback("fail");
|
||
|
|
nc->flags |= MG_F_CLOSE_IMMEDIATELY;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MG_EV_CLOSE:
|
||
|
|
{
|
||
|
|
if (m_response_status == 0 && m_error.empty())
|
||
|
|
{
|
||
|
|
ESP_LOGD(TAG, "DuktapeHTTPRequest: MG_EV_CLOSE: abort");
|
||
|
|
m_error = "abort";
|
||
|
|
RequestCallback("fail");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ESP_LOGD(TAG, "DuktapeHTTPRequest: MG_EV_CLOSE status=%d", m_response_status);
|
||
|
|
}
|
||
|
|
// Mongoose part done:
|
||
|
|
nc->user_data = NULL;
|
||
|
|
m_mgconn = NULL;
|
||
|
|
Unref();
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
duk_ret_t DuktapeHTTPRequest::CallMethod(duk_context *ctx, const char* method, void* data /*=NULL*/)
|
||
|
|
{
|
||
|
|
if (!ctx)
|
||
|
|
{
|
||
|
|
RequestCallback(method, data);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
OvmsRecMutexLock lock(&m_mutex);
|
||
|
|
if (!IsCoupled()) return 0;
|
||
|
|
|
||
|
|
duk_require_stack(ctx, 7);
|
||
|
|
int entry_top = duk_get_top(ctx);
|
||
|
|
|
||
|
|
bool deregister = false;
|
||
|
|
|
||
|
|
while (method)
|
||
|
|
{
|
||
|
|
const char* followup_method = NULL;
|
||
|
|
|
||
|
|
// check method:
|
||
|
|
int obj_idx = Push(ctx);
|
||
|
|
duk_get_prop_string(ctx, obj_idx, method);
|
||
|
|
bool callable = duk_is_callable(ctx, -1);
|
||
|
|
duk_pop(ctx);
|
||
|
|
if (callable) duk_push_string(ctx, method);
|
||
|
|
int nargs = 0;
|
||
|
|
|
||
|
|
// update request.url, set request.redirectCount:
|
||
|
|
duk_push_string(ctx, m_url.c_str());
|
||
|
|
duk_put_prop_string(ctx, obj_idx, "url");
|
||
|
|
duk_push_int(ctx, m_redirectcnt);
|
||
|
|
duk_put_prop_string(ctx, obj_idx, "redirectCount");
|
||
|
|
|
||
|
|
// create results & method arguments:
|
||
|
|
if (strcmp(method, "done") == 0)
|
||
|
|
{
|
||
|
|
// done(response):
|
||
|
|
followup_method = "always";
|
||
|
|
ESP_LOGD(TAG, "DuktapeHTTPRequest: done status=%d bodylen=%d url='%s'",
|
||
|
|
m_response_status, m_response_body.size(), m_url.c_str());
|
||
|
|
|
||
|
|
// clear request.error:
|
||
|
|
duk_push_string(ctx, "");
|
||
|
|
duk_put_prop_string(ctx, obj_idx, "error");
|
||
|
|
|
||
|
|
// create response object:
|
||
|
|
duk_push_object(ctx);
|
||
|
|
duk_push_int(ctx, m_response_status);
|
||
|
|
duk_put_prop_string(ctx, -2, "statusCode");
|
||
|
|
duk_push_string(ctx, m_response_statusmsg.c_str());
|
||
|
|
duk_put_prop_string(ctx, -2, "statusText");
|
||
|
|
|
||
|
|
// …body:
|
||
|
|
if (m_binary)
|
||
|
|
{
|
||
|
|
void* p = duk_push_fixed_buffer(ctx, m_response_body.size());
|
||
|
|
memcpy(p, m_response_body.data(), m_response_body.size());
|
||
|
|
duk_put_prop_string(ctx, -2, "data");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
duk_push_lstring(ctx, m_response_body.data(), m_response_body.size());
|
||
|
|
duk_put_prop_string(ctx, -2, "body");
|
||
|
|
}
|
||
|
|
m_response_body.clear();
|
||
|
|
m_response_body.shrink_to_fit();
|
||
|
|
|
||
|
|
// …response headers:
|
||
|
|
duk_push_array(ctx);
|
||
|
|
int i = 0;
|
||
|
|
for (auto it = m_response_headers.begin(); it != m_response_headers.end(); it++, i++)
|
||
|
|
{
|
||
|
|
duk_push_object(ctx);
|
||
|
|
duk_push_string(ctx, it->second.c_str());
|
||
|
|
duk_put_prop_string(ctx, -2, it->first.c_str());
|
||
|
|
duk_put_prop_index(ctx, -2, i);
|
||
|
|
}
|
||
|
|
duk_put_prop_string(ctx, -2, "headers");
|
||
|
|
m_response_headers.clear();
|
||
|
|
|
||
|
|
duk_dup(ctx, -1);
|
||
|
|
duk_put_prop_string(ctx, obj_idx, "response");
|
||
|
|
nargs++;
|
||
|
|
}
|
||
|
|
else if (strcmp(method, "fail") == 0)
|
||
|
|
{
|
||
|
|
// fail(error):
|
||
|
|
followup_method = "always";
|
||
|
|
ESP_LOGD(TAG, "DuktapeHTTPRequest: failed error='%s' url='%s'",
|
||
|
|
m_error.c_str(), m_url.c_str());
|
||
|
|
|
||
|
|
// set request.error:
|
||
|
|
duk_push_string(ctx, m_error.c_str());
|
||
|
|
duk_dup(ctx, -1);
|
||
|
|
duk_put_prop_string(ctx, obj_idx, "error");
|
||
|
|
nargs++;
|
||
|
|
}
|
||
|
|
else if (strcmp(method, "always") == 0)
|
||
|
|
{
|
||
|
|
// always():
|
||
|
|
deregister = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// call method:
|
||
|
|
if (callable)
|
||
|
|
{
|
||
|
|
ESP_LOGD(TAG, "DuktapeHTTPRequest: calling method '%s' nargs=%d", method, nargs);
|
||
|
|
if (duk_pcall_prop(ctx, obj_idx, nargs) != 0)
|
||
|
|
{
|
||
|
|
DukOvmsErrorHandler(ctx, -1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// clear stack:
|
||
|
|
duk_pop_n(ctx, duk_get_top(ctx) - entry_top);
|
||
|
|
|
||
|
|
// followup call:
|
||
|
|
method = followup_method;
|
||
|
|
} // while (method)
|
||
|
|
|
||
|
|
// allow GC:
|
||
|
|
if (deregister) Deregister(ctx);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////////
|
||
|
|
// DuktapeHTTPInit registration
|
||
|
|
|
||
|
|
class DuktapeHTTPInit
|
||
|
|
{
|
||
|
|
public: DuktapeHTTPInit();
|
||
|
|
} MyDuktapeHTTPInit __attribute__ ((init_priority (1700)));
|
||
|
|
|
||
|
|
DuktapeHTTPInit::DuktapeHTTPInit()
|
||
|
|
{
|
||
|
|
ESP_LOGI(TAG, "Installing DUKTAPE HTTP (1710)");
|
||
|
|
|
||
|
|
DuktapeObjectRegistration* dt_http = new DuktapeObjectRegistration("HTTP");
|
||
|
|
dt_http->RegisterDuktapeFunction(DuktapeHTTPRequest::Create, 1, "request"); // legacy
|
||
|
|
dt_http->RegisterDuktapeFunction(DuktapeHTTPRequest::Create, 1, "Request");
|
||
|
|
MyDuktape.RegisterDuktapeObject(dt_http);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // CONFIG_OVMS_SC_GPL_MONGOOSE
|