249 lines
6.5 KiB
C++
249 lines
6.5 KiB
C++
/*
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; Project: Open Vehicle Monitor System
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; Date: 9th March 2020
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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 "ovms_log.h"
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static const char *TAG = "ovms-net-http";
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#include "ovms.h"
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#include "ovms_nethttp.h"
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#include "ovms_tls.h"
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#include "ovms_utils.h"
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#include "ovms_buffer.h"
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////////////////////////////////////////////////////////////////////////////////
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// OvmsNetHttpAsyncClient
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////////////////////////////////////////////////////////////////////////////////
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OvmsNetHttpAsyncClient::OvmsNetHttpAsyncClient()
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{
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m_buf = NULL;
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m_httpstate = NetHttpIdle;
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}
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OvmsNetHttpAsyncClient::~OvmsNetHttpAsyncClient()
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{
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if (m_buf != NULL)
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{
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delete m_buf;
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m_buf = NULL;
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}
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}
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bool OvmsNetHttpAsyncClient::Request(std::string url, const char* method, double timeout)
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{
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m_url = url;
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m_method = method;
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// First, split URL into server and path components
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if (url.compare(0, 7, "http://", 7) == 0)
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{
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url = url.substr(7);
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m_tls = false;
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}
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else if (url.compare(0, 8, "https://", 8) == 0)
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{
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url = url.substr(8);
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m_tls = true;
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}
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else
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{
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// Just assume http:// was at the start
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m_tls = false;
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}
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size_t delim = url.find('/');
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if (delim==std::string::npos)
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{
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m_dest = url;
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m_path = std::string("");
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}
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else
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{
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m_dest = url.substr(0,delim);
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m_path = url.substr(delim);
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}
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delim = m_dest.find(':');
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if (delim==std::string::npos)
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{
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m_server = m_dest;
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if (m_tls)
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{ m_dest.append(":443"); }
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else
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{ m_dest.append(":80"); }
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}
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else
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{
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m_server = m_dest.substr(0,delim);
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}
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient Connect to %s for request %s %s", m_dest.c_str(), method, url.c_str());
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struct mg_connect_opts opts;
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memset(&opts, 0, sizeof(opts));
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if (m_tls)
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{
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#ifdef CONFIG_MG_ENABLE_SSL
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opts.ssl_ca_cert = MyOvmsTLS.GetTrustedList();
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opts.ssl_server_name = m_server.c_str();
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#else
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ESP_LOGE(TAG, "OvmsNetHttpAsyncClient: SSL support disabled");
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return false;
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#endif
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}
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m_httpstate = NetHttpConnecting;
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return Connect(m_dest, opts, timeout);
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}
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int OvmsNetHttpAsyncClient::ResponseCode()
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{
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return m_responsecode;
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}
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size_t OvmsNetHttpAsyncClient::BodySize()
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{
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return m_bodysize;
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}
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OvmsNetHttpAsyncClient::NetHttpState OvmsNetHttpAsyncClient::GetState()
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{
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return m_httpstate;
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}
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OvmsBuffer* OvmsNetHttpAsyncClient::GetBuffer()
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{
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return m_buf;
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}
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void OvmsNetHttpAsyncClient::Connected()
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{
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient Connected");
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std::string req(m_method);
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req.append(" ");
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req.append(m_path);
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req.append(" HTTP/1.0\r\nHost: ");
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req.append(m_server);
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req.append("\r\nUser-Agent: ");
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req.append(get_user_agent());
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req.append("\r\n\r\n");
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SendData((uint8_t*)req.c_str(), req.length());
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m_buf = new OvmsBuffer(4096);
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m_httpstate = NetHttpHeaders;
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}
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void OvmsNetHttpAsyncClient::ConnectionFailed()
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{
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient Connection failed");
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m_httpstate = NetHttpFailed;
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}
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void OvmsNetHttpAsyncClient::ConnectionClosed()
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{
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient Connection closed");
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m_httpstate = NetHttpComplete;
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}
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size_t OvmsNetHttpAsyncClient::IncomingData(void *data, size_t length)
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{
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if (m_buf == NULL) return length;
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size_t done = 0;
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while (done < length)
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{
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size_t toread = length;
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if (toread > m_buf->FreeSpace()) toread=m_buf->FreeSpace();
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m_buf->Push((uint8_t*)data,toread);
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done += toread;
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient Buffered %d/%d (%d remaining, %d used)", done, length, length-done, m_buf->UsedSpace());
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while ((m_httpstate == NetHttpHeaders)&&(m_buf->HasLine() >= 0))
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{
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std::string header = m_buf->ReadLine();
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if (header.length() == 0)
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{
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HeadersAvailable();
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient Header reception complete");
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m_httpstate = NetHttpBody;
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}
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else
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{
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// Process the header
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient Headers got %s", header.c_str());
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if (strncasecmp(header.c_str(), "Content-Length:", 15) == 0)
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{
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m_bodysize = atoi(header.substr(15).c_str());
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient content-length is %d", m_bodysize);
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}
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if (header.compare(0,5,"HTTP/") == 0)
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{
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size_t space = header.find(' ');
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if (space!=std::string::npos)
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{
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m_responsecode = atoi(header.substr(space+1).c_str());
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient response-code is %d", m_responsecode);
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}
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}
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}
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}
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if ((m_httpstate == NetHttpHeaders)&&(m_buf->FreeSpace() == 0))
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{
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// We have overflowed the allowable line length
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ESP_LOGE(TAG, "OvmsNetHttpAsyncClient Header line too long");
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delete m_buf;
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m_buf = NULL;
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m_httpstate = NetHttpFailed;
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Disconnect();
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ConnectionFailed();
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return length;
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}
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if ((m_httpstate != NetHttpHeaders) && (m_buf->UsedSpace() > 0))
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{
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// We drained the headers
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BodyAvailable();
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}
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}
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return length;
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}
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void OvmsNetHttpAsyncClient::HeadersAvailable()
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{
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient Headers available");
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}
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void OvmsNetHttpAsyncClient::BodyAvailable()
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{
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ESP_LOGD(TAG, "OvmsNetHttpAsyncClient Body data (%d bytes)",m_buf->UsedSpace());
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}
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