CAHttpClient.cpp

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/*
Copyright (c) 2000, The JAP-Team 
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 the University of Technology Dresden, Germany 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 REGENTS 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
*/
#include "StdAfx.h"
#include "CAHttpClient.hpp"

SINT32 CAHttpClient::sendGetRequest(const UINT8 * url)
  {
    static const UINT8 requestF[] = "GET %s HTTP/1.0\r\n\r\n";
    static const UINT32 requestFLen=strlen((char *)requestF);
    if(m_pSocket==NULL)
      {
        return E_NOT_CONNECTED;
      }
    
    // put request together
    UINT32 len = requestFLen + strlen((char *)url);
    UINT8* requestS = new UINT8[len+1];
    sprintf((char *)requestS, (const char *)requestF, (const char *)url);
    len = strlen((char *)requestS);
  
    #ifdef DEBUG
      CAMsg::printMsg(LOG_DEBUG, "HttpClient now sending: %s\n", requestS);
    #endif
    
    // send it
    SINT32 ret = m_pSocket->sendFullyTimeOut(requestS,len, 1000, 1000);
    delete[] requestS;
    requestS = NULL;
    if(ret != E_SUCCESS)
      { // socket error
        return E_UNKNOWN;
      }
    return E_SUCCESS;
  }



SINT32 CAHttpClient::sendPostRequest(const UINT8 * url, const UINT8 * data, const UINT32 dataLen)
  {
    UINT8 requestF[] = "POST %s HTTP/1.0\r\nContent-length: %u\r\n\r\n";
    UINT32 len;
    UINT8* requestS;
    
    if(!m_pSocket)
      {
        return E_NOT_CONNECTED;
      }
  
    // put request together
    len = strlen((char *)requestF) + strlen((char *)url) + 30;
    requestS=new UINT8[len+1];
    sprintf((char *)requestS, (char *)requestF, (char *)url, dataLen);
    len = strlen((char *)requestS);
    #ifdef DEBUG
      CAMsg::printMsg(LOG_DEBUG, "HttpClient now sending: %s\n", requestS);
    #endif
    SINT32 ret=m_pSocket->sendFullyTimeOut(requestS,len, 1000, 1000);
    //SINT32 ret=m_pSocket->sendFully(requestS,len);
    delete[] requestS;
    requestS = NULL;
    if(ret!=E_SUCCESS)
      {
        return E_UNKNOWN;
      }
    ret=m_pSocket->sendFullyTimeOut(data,dataLen, 2000, 1000);
    //ret=m_pSocket->sendFully(data,dataLen);
    if(ret != E_SUCCESS)
      { // socket error
        return E_UNKNOWN;
      }
    return E_SUCCESS;
  }

SINT32 CAHttpClient::parseHTTPHeader(UINT32* contentLength, UINT32 * statusCode, UINT32 msTimeOut)
  {
    if(contentLength!=NULL)
      *contentLength=0;
    if(statusCode!=NULL)
      *statusCode=0;
    char *line = new char[255];
    SINT32 ret = 0;
    SINT32 ret2 = E_UNKNOWN;
    
    UINT64 currentTime = 0, endTime = 0;
    bool nbl = false;
    
    getcurrentTimeMillis(currentTime);
    set64(endTime,currentTime);
    add64(endTime,msTimeOut);
    
    if(msTimeOut > 0)
    {
      m_pSocket->getNonBlocking(&nbl);
      m_pSocket->setNonBlocking(true);
    }
    
    if(!m_pSocket)
    {
      return E_NOT_CONNECTED;
    }
    do
    {
      int i=0;
      UINT8 byte = 0;
      do//Read a line from the WebServer
      {
        
receiving:        
        ret = m_pSocket->receive(&byte, 1); //bytewise? ugh!
        if( (ret == E_AGAIN) && (msTimeOut > 0) )
        {
          getcurrentTimeMillis(currentTime);
          if(!isLesser64(currentTime,endTime))
          {
            CAMsg::printMsg(LOG_ERR, "HTTP-Client parseHeader: timeout!\n");
            ret = E_TIMEDOUT;
            ret2 = E_TIMEDOUT;
            break;
          }
          msTimeOut=diff64(endTime,currentTime);
          msSleep(50);
          goto receiving;
        }
        if(byte == '\r' || byte == '\n')
        {
          line[i++] = 0;
        }
        else
        {
          line[i++] = byte;
        }
      }
      while(byte != '\n' && i<255 && ret > 0 );

      if(ret < 0||i>=255)
      {
        CAMsg::printMsg(LOG_CRIT,"HttpClient: Error return code: %i.\n",ret);
        break;
      }
      if(strncmp(line, "HTTP", 4) == 0)
        {
          if(statusCode!=NULL && strlen(line)>9) // parse statusCode
            {
              *statusCode = atoi(line+9);
            }
          if(strstr(line, "200 OK") == NULL)
            {
              CAMsg::printMsg(LOG_CRIT,"HttpClient: Error: Server returned: '%s'.\n",line);
              break;
            }
          else
            ret2=E_SUCCESS;
        }
      else if( (strncmp(line, "Content-length: ", 16) == 0) ||
                  (strncmp(line, "Content-Length: ", 16) == 0))
        {
          *contentLength = (UINT32) atol(line+16);
        }
      #ifdef DEBUG
        CAMsg::printMsg(LOG_DEBUG,"Server returned: '%s'.\n",line);
      #endif  
    } 
    while(strlen(line) > 0);//Stop reading of response lines, if an empty line was reveived...
    if(msTimeOut > 0)
    {
      m_pSocket->setNonBlocking(nbl);
    }
    delete[] line;
    line = NULL;
    return ret2;
  }

SINT32 CAHttpClient::getContent(UINT8* a_pContent, UINT32* a_pLength)
  {
    if(m_pSocket==NULL)
      {
        return E_NOT_CONNECTED;
      }
      
    UINT32 aktIndex = 0;
    UINT32 len=*a_pLength;
    while(len>0)
      {
        SINT32 ret=m_pSocket->receive(a_pContent+aktIndex,len);
        if(ret<=0)
          break;
        aktIndex+=ret;
        len-=ret; 
      }
    *a_pLength=aktIndex;  
    return E_SUCCESS;
  }