HTTPClient.cpp

00001 /* HTTPClient.cpp */
00002 /* Copyright (C) 2012 mbed.org, MIT License
00003  *
00004  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00005  * and associated documentation files (the "Software"), to deal in the Software without restriction,
00006  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
00007  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
00008  * furnished to do so, subject to the following conditions:
00009  *
00010  * The above copyright notice and this permission notice shall be included in all copies or
00011  * substantial portions of the Software.
00012  *
00013  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00014  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00015  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00016  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00017  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00018  */
00019 
00020 //Debug is disabled by default
00021 #if 0
00022 //Enable debug
00023 #include <cstdio>
00024 #define DBG(x, ...) std::printf("[HTTPClient : DBG]"x"\r\n", ##__VA_ARGS__); 
00025 #define WARN(x, ...) std::printf("[HTTPClient : WARN]"x"\r\n", ##__VA_ARGS__); 
00026 #define ERR(x, ...) std::printf("[HTTPClient : ERR]"x"\r\n", ##__VA_ARGS__); 
00027 
00028 #else
00029 //Disable debug
00030 #define DBG(x, ...) 
00031 #define WARN(x, ...)
00032 #define ERR(x, ...) 
00033 
00034 #endif
00035 
00036 #define HTTP_PORT 80
00037 
00038 #define OK 0
00039 
00040 #define MIN(x,y) (((x)<(y))?(x):(y))
00041 #define MAX(x,y) (((x)>(y))?(x):(y))
00042 
00043 #define CHUNK_SIZE 256
00044 #define HEADER_KEY_MAXLENGTH   34
00045 #define HEADER_VALUE_MAXLENGTH 64
00046 
00047 #include <cstring>
00048 
00049 #include "HTTPClient.h"
00050 
00051 HTTPClient::HTTPClient() :
00052 m_sock(), m_basicAuthUser(NULL), m_basicAuthPassword(NULL), m_httpResponseCode(0)
00053 {
00054 
00055 }
00056 
00057 HTTPClient::~HTTPClient()
00058 {
00059 
00060 }
00061 
00062 #if 0
00063 void HTTPClient::basicAuth(const char* user, const char* password) //Basic Authentification
00064 {
00065   m_basicAuthUser = user;
00066   m_basicAuthPassword = password;
00067 }
00068 #endif
00069 
00070 HTTPResult HTTPClient::get(const char* url, IHTTPDataIn* pDataIn, int timeout /*= HTTP_CLIENT_DEFAULT_TIMEOUT*/) //Blocking
00071 {
00072   return connect(url, HTTP_GET, NULL, pDataIn, timeout);
00073 }
00074 
00075 HTTPResult HTTPClient::get(const char* url, char* result, size_t maxResultLen, int timeout /*= HTTP_CLIENT_DEFAULT_TIMEOUT*/) //Blocking
00076 {
00077   HTTPText str(result, maxResultLen);
00078   return get(url, &str, timeout);
00079 }
00080 
00081 HTTPResult HTTPClient::post(const char* url, const IHTTPDataOut& dataOut, IHTTPDataIn* pDataIn, int timeout /*= HTTP_CLIENT_DEFAULT_TIMEOUT*/) //Blocking
00082 {
00083   return connect(url, HTTP_POST, (IHTTPDataOut*)&dataOut, pDataIn, timeout);
00084 }
00085 
00086 HTTPResult HTTPClient::put(const char* url, const IHTTPDataOut& dataOut, IHTTPDataIn* pDataIn, int timeout /*= HTTP_CLIENT_DEFAULT_TIMEOUT*/) //Blocking
00087 {
00088   return connect(url, HTTP_PUT, (IHTTPDataOut*)&dataOut, pDataIn, timeout);
00089 }
00090 
00091 HTTPResult HTTPClient::del(const char* url, IHTTPDataIn* pDataIn, int timeout /*= HTTP_CLIENT_DEFAULT_TIMEOUT*/) //Blocking
00092 {
00093   return connect(url, HTTP_DELETE, NULL, pDataIn, timeout);
00094 }
00095 
00096 
00097 int HTTPClient::getHTTPResponseCode()
00098 {
00099   return m_httpResponseCode;
00100 }
00101 
00102 #define CHECK_CONN_ERR(ret) \
00103   do{ \
00104     if(ret) { \
00105       m_sock.close(); \
00106       ERR("Connection error (%d)", ret); \
00107       return HTTP_CONN; \
00108     } \
00109   } while(0)
00110 
00111 #define PRTCL_ERR() \
00112   do{ \
00113     m_sock.close(); \
00114     ERR("Protocol error"); \
00115     return HTTP_PRTCL; \
00116   } while(0)
00117 
00118 HTTPResult HTTPClient::connect(const char* url, HTTP_METH method, IHTTPDataOut* pDataOut, IHTTPDataIn* pDataIn, int timeout) //Execute request
00119 { 
00120   m_httpResponseCode = 0; //Invalidate code
00121   m_timeout = timeout;
00122   
00123   pDataIn->writeReset();
00124   if( pDataOut )
00125   {
00126     pDataOut->readReset();
00127   }
00128 
00129   char scheme[8];
00130   uint16_t port;
00131   char host[32];
00132   char path[64];
00133   //First we need to parse the url (http[s]://host[:port][/[path]]) -- HTTPS not supported (yet?)
00134   HTTPResult res = parseURL(url, scheme, sizeof(scheme), host, sizeof(host), &port, path, sizeof(path));
00135   if(res != HTTP_OK)
00136   {
00137     ERR("parseURL returned %d", res);
00138     return res;
00139   }
00140 
00141   if(port == 0) //TODO do handle HTTPS->443
00142   {
00143     port = 80;
00144   }
00145 
00146   DBG("Scheme: %s", scheme);
00147   DBG("Host: %s", host);
00148   DBG("Port: %d", port);
00149   DBG("Path: %s", path);
00150 
00151   //Connect
00152   DBG("Connecting socket to server");
00153   int ret = m_sock.connect(host, port);
00154   if (ret < 0)
00155   {
00156     m_sock.close();
00157     ERR("Could not connect");
00158     return HTTP_CONN;
00159   }
00160 
00161   //Send request
00162   DBG("Sending request");
00163   char buf[CHUNK_SIZE];
00164   const char* meth = (method==HTTP_GET)?"GET":(method==HTTP_POST)?"POST":(method==HTTP_PUT)?"PUT":(method==HTTP_DELETE)?"DELETE":"";
00165   snprintf(buf, sizeof(buf), "%s %s HTTP/1.1\r\nHost: %s\r\n", meth, path, host); //Write request
00166   ret = send(buf);
00167   if(ret)
00168   {
00169     m_sock.close();
00170     ERR("Could not write request");
00171     return HTTP_CONN;
00172   }
00173 
00174   //Send all headers
00175 
00176   //Send default headers
00177   DBG("Sending headers");
00178   if( pDataOut != NULL )
00179   {
00180     if( pDataOut->getIsChunked() )
00181     {
00182       ret = send("Transfer-Encoding: chunked\r\n");
00183       CHECK_CONN_ERR(ret);
00184     }
00185     else
00186     {
00187       snprintf(buf, sizeof(buf), "Content-Length: %d\r\n", pDataOut->getDataLen());
00188       ret = send(buf);
00189       CHECK_CONN_ERR(ret);
00190     }
00191     char type[48];
00192     if( pDataOut->getDataType(type, 48) == HTTP_OK )
00193     {
00194       snprintf(buf, sizeof(buf), "Content-Type: %s\r\n", type);
00195       ret = send(buf);
00196       CHECK_CONN_ERR(ret);
00197     }
00198     
00199     //Send specific headers
00200     while( pDataOut->getHeader(buf, sizeof(buf) - 3) ) //must have space left for CRLF + 0 terminating char
00201     {
00202       size_t headerlen = strlen(buf);
00203       snprintf(buf + headerlen, sizeof(buf) - headerlen, "\r\n");
00204       ret = send(buf);
00205       CHECK_CONN_ERR(ret);
00206     }
00207   }
00208   
00209   //Send specific headers
00210   while( pDataIn->getHeader(buf, sizeof(buf) - 3) )
00211   {
00212     size_t headerlen = strlen(buf);
00213     snprintf(buf + headerlen, sizeof(buf) - headerlen, "\r\n");
00214     ret = send(buf);
00215     CHECK_CONN_ERR(ret);
00216   }
00217   
00218   //Close headers
00219   DBG("Headers sent");
00220   ret = send("\r\n");
00221   CHECK_CONN_ERR(ret);
00222 
00223   size_t trfLen;
00224   
00225   //Send data (if available)
00226   if( pDataOut != NULL )
00227   {
00228     DBG("Sending data");
00229     while(true)
00230     {
00231       size_t writtenLen = 0;
00232       pDataOut->read(buf, CHUNK_SIZE, &trfLen);
00233       if( pDataOut->getIsChunked() )
00234       {
00235         //Write chunk header
00236         char chunkHeader[16];
00237         snprintf(chunkHeader, sizeof(chunkHeader), "%X\r\n", trfLen); //In hex encoding
00238         ret = send(chunkHeader);
00239         CHECK_CONN_ERR(ret);
00240       }
00241       else if( trfLen == 0 )
00242       {
00243         break;
00244       }
00245       if( trfLen != 0 )
00246       {
00247         ret = send(buf, trfLen);
00248         CHECK_CONN_ERR(ret);
00249       }
00250 
00251       if( pDataOut->getIsChunked()  )
00252       {
00253         ret = send("\r\n"); //Chunk-terminating CRLF
00254         CHECK_CONN_ERR(ret);
00255       }
00256       else
00257       {
00258         writtenLen += trfLen;
00259         if( writtenLen >= pDataOut->getDataLen() )
00260         {
00261           break;
00262         }
00263       }
00264 
00265       if( trfLen == 0 )
00266       {
00267         break;
00268       }
00269     }
00270   }
00271   
00272   //Receive response
00273   DBG("Receiving response");
00274   ret = recv(buf, 1, CHUNK_SIZE - 1, &trfLen); //Read n bytes
00275   CHECK_CONN_ERR(ret);
00276 
00277   buf[trfLen] = '\0';
00278 
00279   //Make sure we got the first response line
00280   char* crlfPtr = NULL;
00281   while( true )
00282   {
00283     crlfPtr = strstr(buf, "\r\n");
00284     if(crlfPtr == NULL)
00285     {
00286       if( trfLen < CHUNK_SIZE - 1 )
00287       {
00288         size_t newTrfLen;
00289         ret = recv(buf + trfLen, 1, CHUNK_SIZE - trfLen - 1, &newTrfLen);
00290         trfLen += newTrfLen;
00291         buf[trfLen] = '\0';
00292         DBG("Read %d chars; In buf: [%s]", newTrfLen, buf);
00293         CHECK_CONN_ERR(ret);
00294         continue;
00295       }
00296       else
00297       {
00298         PRTCL_ERR();
00299       }
00300     }
00301     break;
00302   }
00303 
00304   int crlfPos = crlfPtr - buf;
00305   buf[crlfPos] = '\0';
00306 
00307   //Parse HTTP response
00308   //if( sscanf(buf, "HTTP/%*d.%*d %d %*[^\r\n]", &m_httpResponseCode) != 1 )
00309   if(crlfPos > 13)
00310   {
00311     buf[13] = '\0';
00312   }
00313   if( sscanf(buf, "HTTP/%*d.%*d %d", &m_httpResponseCode) != 1 ) //Kludge for newlib nano
00314   {
00315     //Cannot match string, error
00316     ERR("Not a correct HTTP answer : %s", buf);
00317     PRTCL_ERR();
00318   }
00319 
00320   if( (m_httpResponseCode < 200) || (m_httpResponseCode >= 300) )
00321   {
00322     //Did not return a 2xx code; TODO fetch headers/(&data?) anyway and implement a mean of writing/reading headers 
00323     WARN("Response code %d", m_httpResponseCode);
00324     PRTCL_ERR();
00325   }
00326 
00327   DBG("Reading headers");
00328 
00329   memmove(buf, &buf[crlfPos+2], trfLen - (crlfPos + 2) + 1); //Be sure to move NULL-terminating char as well
00330   trfLen -= (crlfPos + 2);
00331 
00332   size_t recvContentLength = 0;
00333   bool recvChunked = false;
00334   bool recvLengthUnknown = true;
00335   //Now get headers
00336   while( true )
00337   {
00338     crlfPtr = strstr(buf, "\r\n");
00339     if(crlfPtr == NULL)
00340     {
00341       if( trfLen < CHUNK_SIZE - 1 )
00342       {
00343         size_t newTrfLen;
00344         ret = recv(buf + trfLen, 1, CHUNK_SIZE - trfLen - 1, &newTrfLen);
00345         trfLen += newTrfLen;
00346         buf[trfLen] = '\0';
00347         DBG("Read %d chars; In buf: [%s]", newTrfLen, buf);
00348         CHECK_CONN_ERR(ret);
00349         continue;
00350       }
00351       else
00352       {
00353         PRTCL_ERR();
00354       }
00355     }
00356 
00357     crlfPos = crlfPtr - buf;
00358 
00359     if(crlfPos == 0) //End of headers
00360     {
00361       DBG("Headers read");
00362       memmove(buf, &buf[2], trfLen - 2 + 1); //Be sure to move NULL-terminating char as well
00363       trfLen -= 2;
00364       break;
00365     }
00366 
00367     buf[crlfPos] = '\0';
00368 
00369     char key[HEADER_KEY_MAXLENGTH];
00370     char value[HEADER_VALUE_MAXLENGTH];
00371 
00372     //key[31] = '\0';
00373     //value[31] = '\0';
00374 
00375     memset(key, 0, HEADER_KEY_MAXLENGTH);
00376     memset(value, 0, HEADER_VALUE_MAXLENGTH);
00377 
00378     //int n = sscanf(buf, "%31[^:]: %31[^\r\n]", key, value);
00379     
00380     int n = 0;
00381     
00382     char* keyEnd = strchr(buf, ':');
00383     if(keyEnd != NULL)
00384     {
00385       *keyEnd = '\0';
00386       if(strlen(buf) < HEADER_KEY_MAXLENGTH)
00387       {
00388         strcpy(key, buf);
00389         n++;
00390         char* valueStart = keyEnd + 2;
00391         if( (valueStart - buf) < crlfPos )
00392         {
00393           if(strlen(valueStart) < HEADER_VALUE_MAXLENGTH)
00394           { 
00395             strcpy(value, valueStart);
00396             n++;
00397           }
00398         }
00399       }
00400     }
00401     if ( n == 2 )
00402     {
00403       DBG("Read header : %s: %s", key, value);
00404       if( !strcmp(key, "Content-Length") )
00405       {
00406         sscanf(value, "%d", &recvContentLength);
00407         recvLengthUnknown = false;
00408         pDataIn->setDataLen(recvContentLength);
00409       }
00410       else if( !strcmp(key, "Transfer-Encoding") )
00411       {
00412         if( !strcmp(value, "Chunked") || !strcmp(value, "chunked") )
00413         {
00414           recvChunked = true;
00415           recvLengthUnknown = false;
00416           pDataIn->setIsChunked(true);
00417         }
00418       }
00419       else if( !strcmp(key, "Content-Type") )
00420       {
00421         pDataIn->setDataType(value);
00422       }
00423 
00424       memmove(buf, &buf[crlfPos+2], trfLen - (crlfPos + 2) + 1); //Be sure to move NULL-terminating char as well
00425       trfLen -= (crlfPos + 2);
00426 
00427     }
00428     else
00429     {
00430       ERR("Could not parse header");
00431       PRTCL_ERR();
00432     }
00433 
00434   }
00435 
00436   //Receive data
00437   DBG("Receiving data");
00438   while(true)
00439   {
00440     size_t readLen = 0;
00441 
00442     if( recvChunked )
00443     {
00444       //Read chunk header
00445       bool foundCrlf;
00446       do
00447       {
00448         foundCrlf = false;
00449         crlfPos=0;
00450         buf[trfLen]=0;
00451         if(trfLen >= 2)
00452         {
00453           for(; crlfPos < trfLen - 2; crlfPos++)
00454           {
00455             if( buf[crlfPos] == '\r' && buf[crlfPos + 1] == '\n' )
00456             {
00457               foundCrlf = true;
00458               break;
00459             }
00460           }
00461         }
00462         if(!foundCrlf) //Try to read more
00463         {
00464           if( trfLen < CHUNK_SIZE )
00465           {
00466             size_t newTrfLen;
00467             ret = recv(buf + trfLen, 0, CHUNK_SIZE - trfLen - 1, &newTrfLen);
00468             trfLen += newTrfLen;
00469             CHECK_CONN_ERR(ret);
00470             continue;
00471           }
00472           else
00473           {
00474             PRTCL_ERR();
00475           }
00476         }
00477       } while(!foundCrlf);
00478       buf[crlfPos] = '\0';
00479       int n = sscanf(buf, "%x", &readLen);
00480       if(n!=1)
00481       {
00482         ERR("Could not read chunk length");
00483         PRTCL_ERR();
00484       }
00485 
00486       memmove(buf, &buf[crlfPos+2], trfLen - (crlfPos + 2)); //Not need to move NULL-terminating char any more
00487       trfLen -= (crlfPos + 2);
00488 
00489       if( readLen == 0 )
00490       {
00491         //Last chunk
00492         break;
00493       }
00494     }
00495     else
00496     {
00497       readLen = recvContentLength;
00498     }
00499 
00500     DBG("Retrieving %d bytes (%d bytes in buffer)", readLen, trfLen);
00501 
00502     do
00503     {
00504       if(recvLengthUnknown )
00505       {
00506         readLen = trfLen;
00507       }
00508       pDataIn->write(buf, MIN(trfLen, readLen));
00509       if(!recvLengthUnknown)
00510       {
00511         if( trfLen > readLen )
00512         {
00513           memmove(buf, &buf[readLen], trfLen - readLen);
00514           trfLen -= readLen;
00515           readLen = 0;
00516         }
00517         else
00518         {
00519           readLen -= trfLen;
00520         }
00521       }
00522       else
00523       {
00524         trfLen = 0;
00525       }
00526 
00527       if(readLen || recvLengthUnknown)
00528       {
00529         ret = recv(buf, 1, CHUNK_SIZE - trfLen - 1, &trfLen);
00530         if(recvLengthUnknown && (ret == HTTP_CLOSED))
00531         {
00532           //Write and exit
00533           pDataIn->write(buf, trfLen);
00534           break;
00535         }
00536         CHECK_CONN_ERR(ret);
00537         if(recvLengthUnknown && (trfLen == 0))
00538         {
00539           break;
00540         }
00541       }
00542     } while(readLen || recvLengthUnknown);
00543 
00544     if( recvChunked )
00545     {
00546       if(trfLen < 2)
00547       {
00548         size_t newTrfLen;
00549         //Read missing chars to find end of chunk
00550         ret = recv(buf + trfLen, 2 - trfLen, CHUNK_SIZE - trfLen - 1, &newTrfLen);
00551         CHECK_CONN_ERR(ret);
00552         trfLen += newTrfLen;
00553       }
00554       if( (buf[0] != '\r') || (buf[1] != '\n') )
00555       {
00556         ERR("Format error");
00557         PRTCL_ERR();
00558       }
00559       memmove(buf, &buf[2], trfLen - 2);
00560       trfLen -= 2;
00561     }
00562     else
00563     {
00564       break;
00565     }
00566 
00567   }
00568 
00569   m_sock.close();
00570   DBG("Completed HTTP transaction");
00571 
00572   return HTTP_OK;
00573 }
00574 
00575 HTTPResult HTTPClient::recv(char* buf, size_t minLen, size_t maxLen, size_t* pReadLen) //0 on success, err code on failure
00576 {
00577   DBG("Trying to read between %d and %d bytes", minLen, maxLen);
00578   size_t readLen = 0;
00579       
00580   if(!m_sock.is_connected())
00581   {
00582     WARN("Connection was closed by server");
00583     return HTTP_CLOSED; //Connection was closed by server 
00584   }
00585     
00586   int ret;
00587   while(readLen < maxLen)
00588   {
00589     if(readLen < minLen)
00590     {
00591       DBG("Trying to read at most %d bytes [Blocking]", minLen - readLen);
00592       m_sock.set_blocking(false, m_timeout);
00593       ret = m_sock.receive_all(buf + readLen, minLen - readLen);
00594     }
00595     else
00596     {
00597       DBG("Trying to read at most %d bytes [Not blocking]", maxLen - readLen);
00598       m_sock.set_blocking(false, 0);
00599       ret = m_sock.receive(buf + readLen, maxLen - readLen);
00600     }
00601     
00602     if( ret > 0)
00603     {
00604       readLen += ret;
00605     }
00606     else if( ret == 0 )
00607     {
00608       break;
00609     }
00610     else
00611     {
00612       if(!m_sock.is_connected())
00613       {
00614         ERR("Connection error (recv returned %d)", ret);
00615         *pReadLen = readLen;
00616         return HTTP_CONN;
00617       }
00618       else
00619       {
00620         break;      
00621       }
00622     }
00623     
00624     if(!m_sock.is_connected())
00625     {
00626       break;
00627     }
00628   }
00629   DBG("Read %d bytes", readLen);
00630   *pReadLen = readLen;
00631   return HTTP_OK;
00632 }
00633 
00634 HTTPResult HTTPClient::send(char* buf, size_t len) //0 on success, err code on failure
00635 {
00636   if(len == 0)
00637   {
00638     len = strlen(buf);
00639   }
00640   DBG("Trying to write %d bytes", len);
00641   size_t writtenLen = 0;
00642     
00643   if(!m_sock.is_connected())
00644   {
00645     WARN("Connection was closed by server");
00646     return HTTP_CLOSED; //Connection was closed by server 
00647   }
00648   
00649   m_sock.set_blocking(false, m_timeout);
00650   int ret = m_sock.send_all(buf, len);
00651   if(ret > 0)
00652   {
00653     writtenLen += ret;
00654   }
00655   else if( ret == 0 )
00656   {
00657     WARN("Connection was closed by server");
00658     return HTTP_CLOSED; //Connection was closed by server
00659   }
00660   else
00661   {
00662     ERR("Connection error (send returned %d)", ret);
00663     return HTTP_CONN;
00664   }
00665   
00666   DBG("Written %d bytes", writtenLen);
00667   return HTTP_OK;
00668 }
00669 
00670 HTTPResult HTTPClient::parseURL(const char* url, char* scheme, size_t maxSchemeLen, char* host, size_t maxHostLen, uint16_t* port, char* path, size_t maxPathLen) //Parse URL
00671 {
00672   char* schemePtr = (char*) url;
00673   char* hostPtr = (char*) strstr(url, "://");
00674   if(hostPtr == NULL)
00675   {
00676     WARN("Could not find host");
00677     return HTTP_PARSE; //URL is invalid
00678   }
00679 
00680   if( maxSchemeLen < hostPtr - schemePtr + 1 ) //including NULL-terminating char
00681   {
00682     WARN("Scheme str is too small (%d >= %d)", maxSchemeLen, hostPtr - schemePtr + 1);
00683     return HTTP_PARSE;
00684   }
00685   memcpy(scheme, schemePtr, hostPtr - schemePtr);
00686   scheme[hostPtr - schemePtr] = '\0';
00687 
00688   hostPtr+=3;
00689 
00690   size_t hostLen = 0;
00691 
00692   char* portPtr = strchr(hostPtr, ':');
00693   if( portPtr != NULL )
00694   {
00695     hostLen = portPtr - hostPtr;
00696     portPtr++;
00697     if( sscanf(portPtr, "%hu", port) != 1)
00698     {
00699       WARN("Could not find port");
00700       return HTTP_PARSE;
00701     }
00702   }
00703   else
00704   {
00705     *port=0;
00706   }
00707   char* pathPtr = strchr(hostPtr, '/');
00708   if( hostLen == 0 )
00709   {
00710     hostLen = pathPtr - hostPtr;
00711   }
00712 
00713   if( maxHostLen < hostLen + 1 ) //including NULL-terminating char
00714   {
00715     WARN("Host str is too small (%d >= %d)", maxHostLen, hostLen + 1);
00716     return HTTP_PARSE;
00717   }
00718   memcpy(host, hostPtr, hostLen);
00719   host[hostLen] = '\0';
00720 
00721   size_t pathLen;
00722   char* fragmentPtr = strchr(hostPtr, '#');
00723   if(fragmentPtr != NULL)
00724   {
00725     pathLen = fragmentPtr - pathPtr;
00726   }
00727   else
00728   {
00729     pathLen = strlen(pathPtr);
00730   }
00731 
00732   if( maxPathLen < pathLen + 1 ) //including NULL-terminating char
00733   {
00734     WARN("Path str is too small (%d >= %d)", maxPathLen, pathLen + 1);
00735     return HTTP_PARSE;
00736   }
00737   memcpy(path, pathPtr, pathLen);
00738   path[pathLen] = '\0';
00739 
00740   return HTTP_OK;
00741 }