mirror of
https://github.com/dashr9230/SA-MP.git
synced 2024-12-23 06:57:31 +08:00
401 lines
9.6 KiB
C++
401 lines
9.6 KiB
C++
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#include <stdio.h>
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#include <string.h>
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#ifdef WIN32
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# include <windows.h>
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#else
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# include <errno.h>
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# include <sys/types.h>
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# include <sys/socket.h>
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# include <sys/wait.h>
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# include <netinet/in.h>
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# include <netdb.h>
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#endif
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#include "httpclient.h"
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#include "runutil.h"
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//----------------------------------------------------
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CHttpClient::CHttpClient()
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{
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memset(&m_Request,0,sizeof(HTTP_REQUEST));
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memset(&m_Response,0,sizeof(HTTP_RESPONSE));
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m_iError = HTTP_SUCCESS; // Request is successful until otherwise indicated
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m_iSocket = (-1);
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// Winsock init
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#ifdef WIN32
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WORD wVersionRequested;
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WSADATA wsaData;
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wVersionRequested = MAKEWORD(2,2);
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WSAStartup(wVersionRequested,&wsaData);
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#endif
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}
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//----------------------------------------------------
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CHttpClient::~CHttpClient()
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{
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// Deallocate the request data memory
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if(m_Request.file) free(m_Request.file);
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if(m_Request.host) free(m_Request.host);
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if(m_Request.referer) free(m_Request.referer);
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if(m_Request.rtype == HTTP_POST) {
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if(m_Request.data) free(m_Request.data);
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}
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// Deallocate the response data memory
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if(m_Response.header) free(m_Response.header);
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if(m_Response.response) free(m_Response.response);
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// Winsock cleanup
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#ifdef WIN32
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WSACleanup();
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#endif
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}
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//----------------------------------------------------
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int CHttpClient::ProcessURL(int iType, char *szURL, char *szPostData, char *szReferer)
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{
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printf("CHttpClient::ProcessURL %s\n", szURL); // Thanks Kalcor!
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InitRequest(iType,szURL,szPostData,szReferer);
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Process();
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return m_iError;
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}
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//----------------------------------------------------
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bool CHttpClient::GetHeaderValue(char *szHeaderName,char *szReturnBuffer, int iBufSize)
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{
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char *szHeaderStart;
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char *szHeaderEnd;
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int iLengthSearchHeader = strlen(szHeaderName);
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int iCopyLength;
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szHeaderStart = Util_stristr(m_Response.header,szHeaderName);
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if(!szHeaderStart) {
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return false;
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}
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szHeaderStart+=iLengthSearchHeader+1;
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szHeaderEnd = strchr(szHeaderStart,'\n');
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if(!szHeaderEnd) {
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szHeaderEnd = m_Response.header + strlen(m_Response.header); // (END OF STRING)
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}
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iCopyLength = szHeaderEnd - szHeaderStart;
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if(iBufSize < iCopyLength) {
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return false;
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}
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memcpy(szReturnBuffer,szHeaderStart,iCopyLength);
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szReturnBuffer[iCopyLength] = '\0';
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return true;
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}
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//----------------------------------------------------
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bool CHttpClient::Connect(char *szHost, int iPort)
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{
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struct sockaddr_in sa;
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struct hostent *hp;
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// Hostname translation
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if((hp=(struct hostent *)gethostbyname(szHost)) == NULL ) {
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m_iError=HTTP_ERROR_BAD_HOST;
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return false;
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}
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// Prepare a socket
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memset(&sa,0,sizeof(sa));
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memcpy(&sa.sin_addr,hp->h_addr,hp->h_length);
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sa.sin_family = hp->h_addrtype;
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sa.sin_port = htons((unsigned short)iPort);
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if((m_iSocket=socket(AF_INET,SOCK_STREAM,0)) < 0) {
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m_iError=HTTP_ERROR_NO_SOCKET;
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return false;
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}
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// Try to connect
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if(connect(m_iSocket,(struct sockaddr *)&sa,sizeof sa) < 0) {
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CloseConnection();
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m_iError=HTTP_ERROR_CANT_CONNECT;
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return false;
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}
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return true;
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}
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//----------------------------------------------------
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void CHttpClient::CloseConnection()
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{
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#ifdef WIN32
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closesocket(m_iSocket);
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#else
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close(m_iSocket);
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#endif
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}
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//----------------------------------------------------
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bool CHttpClient::Send(char *szData)
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{
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if(send(m_iSocket,szData,strlen(szData),0) < 0) {
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m_iError = HTTP_ERROR_CANT_WRITE;
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return false;
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}
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return true;
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}
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//----------------------------------------------------
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int CHttpClient::Recv(char *szBuffer, int iBufferSize)
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{
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return recv(m_iSocket,szBuffer,iBufferSize,0);
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}
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//----------------------------------------------------
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void CHttpClient::InitRequest(int iType, char *szURL, char *szPostData, char *szReferer)
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{
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char *port; // port string
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char *port_char; // position of ':' if any
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unsigned int slash_pos; // position of first '/' numeric
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char *slash_ptr;
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char *szUseURL; // incase we have to cat something to it.
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szUseURL = (char *)malloc(strlen(szURL)+256);
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strcpy(szUseURL,szURL);
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m_Request.rtype = iType;
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m_Request.referer = (char *)malloc(strlen(szReferer)+1);
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strcpy(m_Request.referer,szReferer);
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if(iType==HTTP_POST) {
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m_Request.data=(char *)malloc(strlen(szPostData)+1);
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strcpy(m_Request.data,szPostData);
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}
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// Copy hostname from URL
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slash_ptr = strchr(szUseURL,'/');
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if(!slash_ptr) {
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strcat(szUseURL,"/");
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slash_ptr = strchr(szUseURL,'/');
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}
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slash_pos=(slash_ptr-szUseURL);
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m_Request.host=(char *)malloc(slash_pos+1);
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memcpy(m_Request.host,szUseURL,slash_pos);
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m_Request.host[slash_pos]='\0';
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// Copy the rest of the url to the file string.
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m_Request.file=(char *)malloc((strlen(szUseURL)-slash_pos)+1);
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strcpy(m_Request.file,strchr(szUseURL,'/'));
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// Any special port used in the URL?
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if((port_char=strchr(m_Request.host,':'))!=NULL) {
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port=(char *)malloc(strlen(port_char));
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strcpy(port,port_char+1);
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*port_char='\0';
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m_Request.port = atoi(port);
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free(port);
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}
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else {
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m_Request.port = 80;
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}
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free(szUseURL);
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}
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//----------------------------------------------------
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void CHttpClient::Process()
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{
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int header_len;
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char *request_head;
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if(!Connect(m_Request.host,m_Request.port)) {
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return;
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}
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// Build the HTTP Header
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switch(m_Request.rtype)
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{
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case HTTP_GET:
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header_len = strlen(m_Request.file)+strlen(m_Request.host)+
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(strlen(GET_FORMAT)-8)+strlen(USER_AGENT)+
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strlen(m_Request.referer);
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request_head = (char *)malloc(header_len+1);
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sprintf(request_head,GET_FORMAT,m_Request.file,USER_AGENT,m_Request.referer,m_Request.host);
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break;
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case HTTP_HEAD:
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header_len = strlen(m_Request.file)+strlen(m_Request.host)+
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(strlen(HEAD_FORMAT)-8)+strlen(USER_AGENT)+
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strlen(m_Request.referer);
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request_head = (char *)malloc(header_len+1);
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sprintf(request_head,HEAD_FORMAT,m_Request.file,USER_AGENT,m_Request.referer,m_Request.host);
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break;
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case HTTP_POST:
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header_len = strlen(m_Request.data)+strlen(m_Request.file)+
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strlen(m_Request.host)+strlen(POST_FORMAT)+
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strlen(USER_AGENT)+strlen(m_Request.referer);
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request_head = (char *)malloc(header_len+1);
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sprintf(request_head,POST_FORMAT,m_Request.file,USER_AGENT,m_Request.referer,m_Request.host,strlen(m_Request.data),m_Request.data);
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break;
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}
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if(!Send(request_head)) {
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free(request_head);
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return;
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}
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free(request_head);
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HandleEntity();
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}
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//----------------------------------------------------
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#define RECV_BUFFER_SIZE 4096
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void CHttpClient::HandleEntity()
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{
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int bytes_total = 0;
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int bytes_read = 0;
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char *buffer = (char *)malloc(RECV_BUFFER_SIZE);
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char *response = (char *)malloc(1);
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char *header;
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char *head_end;
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char *pcontent_buf;
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char *content_len_str;
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bool header_got = false;
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bool has_content_len = false;
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int header_len = 0;
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int content_len = 0;
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while((bytes_read=Recv(buffer,RECV_BUFFER_SIZE)) > 0)
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{
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bytes_total+=bytes_read;
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response=(char *)realloc(response,bytes_total+1);
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memcpy(response+(bytes_total-bytes_read),buffer,(unsigned int)bytes_read);
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if(!header_got)
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{
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if((head_end=strstr(response,"\r\n\r\n"))!=NULL
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|| (head_end=strstr(response,"\n\n"))!=NULL)
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{
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header_got=true;
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header_len=(head_end-response);
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header=(char *)malloc(header_len+1);
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memcpy(header,response,header_len);
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header[header_len]='\0';
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if((*(response+header_len))=='\n') /* LFLF */
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{
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bytes_total-=(header_len+2);
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memmove(response,(response+(header_len+2)),bytes_total);
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}
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else /* assume CRLFCRLF */
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{
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bytes_total-=(header_len+4);
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memmove(response,(response+(header_len+4)),bytes_total);
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}
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/* find the content-length if available */
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if((pcontent_buf=Util_stristr(header,"CONTENT-LENGTH:"))!=NULL)
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{
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has_content_len=true;
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pcontent_buf+=16;
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while(*pcontent_buf!='\n' && *pcontent_buf)
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{
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*pcontent_buf++;
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content_len++;
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}
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content_len_str=(char *)malloc(content_len+1);
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pcontent_buf-=content_len;
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memcpy(content_len_str,pcontent_buf,content_len);
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if(content_len_str[content_len-1] == '\r') {
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content_len_str[content_len-1]='\0';
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}
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else {
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content_len_str[content_len]='\0';
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}
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content_len=atoi(content_len_str);
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free(content_len_str);
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if(content_len > MAX_ENTITY_LENGTH) {
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CloseConnection();
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m_iError = HTTP_ERROR_CONTENT_TOO_BIG;
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return;
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}
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}
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}
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}
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if(header_got && has_content_len)
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if(bytes_total>=content_len) break;
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}
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CloseConnection();
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response[bytes_total]='\0';
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free(buffer);
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// check the returned header
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if(!header_got || *(DWORD *)header != 0x50545448) { // 'HTTP'
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m_iError = HTTP_ERROR_MALFORMED_RESPONSE;
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return;
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}
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// Now fill in the response code
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char response_code_str[4];
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response_code_str[0] = *(header+9);
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response_code_str[1] = *(header+10);
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response_code_str[2] = *(header+11);
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response_code_str[3] = '\0';
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m_Response.response_code = atoi(response_code_str);
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// Copy over the document entity strings and sizes
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m_Response.header = header;
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m_Response.header_len = header_len;
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m_Response.response = response;
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m_Response.response_len = bytes_total;
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//printf("Code: %u\n\n%s\n",m_Response.response_code,m_Response.header);
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// Try and determine the document type
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m_Response.content_type = CONTENT_TYPE_HTML; // default to html
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char szContentType[256];
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if(GetHeaderValue("CONTENT-TYPE:",szContentType,256) == true) {
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if(strstr(szContentType,"text/html") != NULL) {
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m_Response.content_type = CONTENT_TYPE_HTML;
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}
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else if(strstr(szContentType,"text/plain") != NULL) {
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m_Response.content_type = CONTENT_TYPE_TEXT;
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} else {
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m_Response.content_type = CONTENT_TYPE_UNKNOWN;
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}
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}
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}
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//----------------------------------------------------
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