2 * Copyright (C) Volition, Inc. 1999. All rights reserved.
4 * All source code herein is the property of Volition, Inc. You may not sell
5 * or otherwise commercially exploit the source or things you created based on
10 * $Logfile: /Freespace2/code/Inetfile/Chttpget.cpp $
15 * HTTP Client class (get only)
18 * Revision 1.8 2002/06/21 03:04:12 relnev
21 * Revision 1.7 2002/06/17 06:33:09 relnev
22 * ryan's struct patch for gcc 2.95
24 * Revision 1.6 2002/06/09 04:41:21 relnev
25 * added copyright header
27 * Revision 1.5 2002/06/02 04:26:34 relnev
30 * Revision 1.4 2002/05/26 20:32:24 theoddone33
31 * Fix some minor stuff
33 * Revision 1.3 2002/05/26 20:20:54 relnev
38 * Revision 1.2 2002/05/07 03:16:45 theoddone33
39 * The Great Newline Fix
41 * Revision 1.1.1.1 2002/05/03 03:28:09 root
45 * 5 8/24/99 1:49a Dave
46 * Fixed client-side afterburner stuttering. Added checkbox for no version
47 * checking on PXO join. Made button info passing more friendly between
50 * 4 8/22/99 1:19p Dave
51 * Fixed up http proxy code. Cleaned up scoring code. Reverse the order in
52 * which d3d cards are detected.
54 * 21 8/21/99 6:33p Kevin
57 * 20 8/21/99 6:48a Jeff
60 * 19 8/20/99 3:01p Kevin
61 * Added support for Proxies (I hope!)
63 * 18 8/15/99 6:38p Jeff
66 * 17 8/15/99 6:26p Kevin
68 * 16 4/14/99 1:20a Jeff
69 * fixed case mismatched #includes
71 * 15 3/03/99 12:28a Nate
72 * sped up something or other when the connection is done
74 * 14 2/03/99 4:20p Kevin
75 * Got multiplayer working with .mn3 files, and setup autodownloading
77 * 13 1/27/99 5:49p Kevin
79 * 12 1/27/99 5:38p Kevin
81 * 11 12/30/98 12:15p Kevin
82 * Auto Mission Download system
84 * 10 10/12/98 4:59p Kevin
85 * Added delay to thread when cancelled...
87 * 9 10/12/98 4:49p Nate
90 * 8 10/12/98 1:54p Nate
93 * 7 10/12/98 11:30a Kevin
96 * 6 10/08/98 12:59p Nate
99 * 5 10/08/98 9:57a Kevin
100 * made transfer cancellable
102 * 4 7/31/98 12:19p Nate
103 * Fixed http abort problem.
105 * 3 7/31/98 11:57a Kevin
106 * Added new functions for getting state
108 * 2 6/01/98 10:10a Kevin
109 * Added DLL connection interface and auto update DLL
111 * 1 5/27/98 9:52a Kevin
113 * 1 5/25/98 5:31p Kevin
124 #include <sys/types.h>
125 #include <sys/socket.h>
126 #include <netinet/in.h>
127 #include <arpa/inet.h>
129 #include <sys/ioctl.h>
131 #include <sys/time.h>
141 #include "inetgetfile.h"
142 #include "chttpget.h"
146 #define NW_AGHBN_CANCEL 1
147 #define NW_AGHBN_LOOKUP 2
148 #define NW_AGHBN_READ 3
150 int http_gethostbynameworker(void *parm);
153 int http_Asyncgethostbyname(unsigned int *ip,int command, char *hostname);
155 int HTTPObjThread( void * obj )
157 ((ChttpGet *)obj)->WorkerThread();
158 ((ChttpGet *)obj)->m_Aborted = true;
160 return ((ChttpGet *)obj)->GetStatus();
163 void ChttpGet::AbortGet()
166 while(!m_Aborted) SDL_Delay(10); //Wait for the thread to end
169 ChttpGet::ChttpGet(char *URL,char *localfile,char *proxyip,unsigned short proxyport)
171 m_ProxyEnabled = true;
173 m_ProxyPort = proxyport;
174 GetFile(URL,localfile);
177 ChttpGet::ChttpGet(char *URL,char *localfile)
179 m_ProxyEnabled = false;
180 GetFile(URL,localfile);
184 void ChttpGet::GetFile(char *URL,char *localfile)
186 m_DataSock = INVALID_SOCKET;
189 m_State = HTTP_STATE_STARTUP;;
193 strncpy(m_URL,URL,MAX_URL_LEN-1);
194 m_URL[MAX_URL_LEN-1] = 0;
196 LOCALFILE = fopen(localfile,"wb");
197 if(NULL == LOCALFILE)
199 m_State = HTTP_STATE_CANT_WRITE_FILE;
203 m_DataSock = socket(AF_INET, SOCK_STREAM, 0);
204 if(INVALID_SOCKET == m_DataSock)
206 m_State = HTTP_STATE_SOCKET_ERROR;
214 ioctlsocket( m_DataSock, FIONBIO, &arg );
217 if(SDL_strncasecmp(URL,"http:",5)==0)
225 //There shouldn't be any : in this string
228 m_State = HTTP_STATE_URL_PARSING_ERROR;
232 //read the filename by searching backwards for a /
233 //then keep reading until you find the first /
234 //when you found it, you have the host and dir
235 char *filestart = NULL;
236 char *dirstart = NULL;
237 for(int i = strlen(pURL);i>=0;i--)
243 filestart = pURL+i+1;
245 strcpy(m_szFilename,filestart);
253 if((dirstart==NULL) || (filestart==NULL))
255 m_State = HTTP_STATE_URL_PARSING_ERROR;
261 strcpy(m_szDir,dirstart);//,(filestart-dirstart));
262 //m_szDir[(filestart-dirstart)] = NULL;
263 strncpy(m_szHost,pURL,(dirstart-pURL));
264 m_szHost[(dirstart-pURL)-1] = '\0';
267 SDL_Thread *thread = SDL_CreateThread(HTTPObjThread, "HTTPObjThread", this);
271 m_State = HTTP_STATE_INTERNAL_ERROR;
278 SDL_WaitThread(thread, &ret_val);
283 ChttpGet::~ChttpGet()
285 if(m_DataSock != INVALID_SOCKET)
287 shutdown(m_DataSock,2);
288 closesocket(m_DataSock);
291 if(LOCALFILE != NULL)
297 int ChttpGet::GetStatus()
302 unsigned int ChttpGet::GetBytesIn()
307 unsigned int ChttpGet::GetTotalBytes()
309 return m_iBytesTotal;
313 void ChttpGet::WorkerThread()
315 char szCommand[1000];
325 if(m_State != HTTP_STATE_CONNECTED)
331 sprintf(szCommand,"GET %s%s HTTP/1.1\nAccept: */*\nAccept-Encoding: deflate\nHost: %s\n\n\n",m_ProxyEnabled?"":"/",m_ProxyEnabled?m_URL:m_szDir,m_szHost);
332 send(m_DataSock,szCommand,strlen(szCommand),0);
334 if(SDL_strncasecmp("HTTP/",p,5)==0)
337 pcode = strchr(p,' ')+1;
340 m_State = HTTP_STATE_UNKNOWN_ERROR;
351 m_State = HTTP_STATE_UNKNOWN_ERROR;
364 m_State = HTTP_STATE_UNKNOWN_ERROR;
374 if(SDL_strncasecmp(p,"Content-Length:",strlen("Content-Length:"))==0)
376 char *s = strchr(p,' ')+1;
388 m_iBytesTotal = atoi(p);
398 m_State = HTTP_STATE_FILE_NOT_FOUND;
405 m_State = HTTP_STATE_UNKNOWN_ERROR;
412 int ChttpGet::ConnectSocket()
417 SOCKADDR_IN hostaddr;
422 ip = inet_addr((const char *)m_szHost);
427 http_Asyncgethostbyname(&ip,NW_AGHBN_LOOKUP,m_szHost);
432 http_Asyncgethostbyname(&ip,NW_AGHBN_CANCEL,m_szHost);
435 rcode = http_Asyncgethostbyname(&ip,NW_AGHBN_READ,m_szHost);
443 m_State = HTTP_STATE_HOST_NOT_FOUND;
449 se = getservbyname("http", NULL);
454 hostaddr.sin_port = htons(80);
458 hostaddr.sin_port = se->s_port;
460 hostaddr.sin_family = AF_INET;
462 memcpy(&hostaddr.sin_addr,&ip,4);
466 //This is on a proxy, so we need to make sure to connect to the proxy machine
467 ip = inet_addr((const char *)m_ProxyIP);
471 http_Asyncgethostbyname(&ip,NW_AGHBN_LOOKUP,m_ProxyIP);
477 http_Asyncgethostbyname(&ip,NW_AGHBN_CANCEL,m_ProxyIP);
480 rcode = http_Asyncgethostbyname(&ip,NW_AGHBN_READ,m_ProxyIP);
488 m_State = HTTP_STATE_HOST_NOT_FOUND;
493 //Use either the proxy port or 80 if none specified
494 hostaddr.sin_port = htons((ushort)(m_ProxyPort ? m_ProxyPort : 80));
495 //Copy the proxy address...
496 memcpy(&hostaddr.sin_addr,&ip,4);
499 //Now we will connect to the host
505 int serr = connect(m_DataSock, (SOCKADDR *)&hostaddr, sizeof(SOCKADDR));
506 int cerr = WSAGetLastError();
509 while((cerr==WSAEALREADY)||(cerr==WSAEINVAL)||(cerr==WSAEWOULDBLOCK))
512 FD_SET( m_DataSock, &wfds );
513 if(select(0,NULL,&wfds,NULL,&timeout))
520 serr = connect(m_DataSock, (SOCKADDR *)&hostaddr, sizeof(SOCKADDR));
523 cerr = WSAGetLastError();
535 m_State = HTTP_STATE_CANT_CONNECT;
538 m_State = HTTP_STATE_CONNECTED;
542 char *ChttpGet::GetHTTPLine()
546 unsigned int igotcrlf = 0;
547 memset(recv_buffer,0,1000);
551 bool gotdata = false;
554 iBytesRead = recv(m_DataSock,chunk,1,0);
556 if(SOCKET_ERROR == iBytesRead)
558 int error = WSAGetLastError();
559 if(WSAEWOULDBLOCK==error)
577 //This should always read a 0x0a
580 iBytesRead = recv(m_DataSock,chunk,1,0);
582 if(SOCKET_ERROR == iBytesRead)
584 int error = WSAGetLastError();
585 if(WSAEWOULDBLOCK==error)
604 strcat(recv_buffer,chunk);
612 unsigned int ChttpGet::ReadDataChannel()
614 char sDataBuffer[4096]; // Data-storage buffer for the data channel
615 int nBytesRecv = 0; // Bytes received from the data channel
621 timeout.tv_usec = 500;
623 m_State = HTTP_STATE_RECEIVING;
627 FD_SET( m_DataSock, &wfds );
629 if((m_iBytesTotal)&&(m_iBytesIn==m_iBytesTotal))
633 select(0,&wfds,NULL,NULL,&timeout);
639 nBytesRecv = recv(m_DataSock, (char *)&sDataBuffer,sizeof(sDataBuffer), 0);
645 if(SOCKET_ERROR == nBytesRecv)
647 int error = WSAGetLastError();
648 if(WSAEWOULDBLOCK==error)
654 m_iBytesIn += nBytesRecv;
657 fwrite(sDataBuffer,nBytesRecv,1,LOCALFILE);
658 //Write sDataBuffer, nBytesRecv
662 }while (nBytesRecv > 0);
664 // Close the file and check for error returns.
665 if (nBytesRecv == SOCKET_ERROR)
667 //Ok, we got a socket error -- xfer aborted?
668 m_State = HTTP_STATE_RECV_FAILED;
673 //OutputDebugString("HTTP File complete!\n");
675 m_State = HTTP_STATE_FILE_RECEIVED;
681 typedef struct _async_dns_lookup
683 unsigned int ip; //resolved host. Write only to worker thread.
684 char * host;//host name to resolve. read only to worker thread
685 bool done; //write only to the worker thread. Signals that the operation is complete
686 bool error; //write only to worker thread. Thread sets this if the name doesn't resolve
687 bool abort; //read only to worker thread. If this is set, don't fill in the struct.
690 async_dns_lookup httpaslu;
691 async_dns_lookup *http_lastaslu = NULL;
693 int http_gethostbynameworker(void *parm);
695 int http_Asyncgethostbyname(unsigned int *ip,int command, char *hostname)
698 if(command==NW_AGHBN_LOOKUP)
701 http_lastaslu->abort = true;
703 async_dns_lookup *newaslu;
704 newaslu = (async_dns_lookup *)malloc(sizeof(async_dns_lookup));
705 memset(&newaslu->ip,0,sizeof(unsigned int));
706 newaslu->host = hostname;
707 newaslu->done = false;
708 newaslu->error = false;
709 newaslu->abort = false;
710 http_lastaslu = newaslu;
711 httpaslu.done = false;
713 SDL_CreateThread(http_gethostbynameworker, "GetHostByNameWorker", newaslu);
717 else if(command==NW_AGHBN_CANCEL)
720 http_lastaslu->abort = true;
721 http_lastaslu = NULL;
723 else if(command==NW_AGHBN_READ)
729 //free(http_lastaslu);
730 http_lastaslu = NULL;
731 memcpy(ip,&httpaslu.ip,sizeof(unsigned int));
734 else if(httpaslu.error)
737 http_lastaslu = NULL;
746 // This is the worker thread which does the lookup.
747 int http_gethostbynameworker(void *parm)
749 async_dns_lookup *lookup = (async_dns_lookup *)parm;
750 HOSTENT *he = gethostbyname(lookup->host);
753 lookup->error = true;
756 else if(!lookup->abort)
758 memcpy(&lookup->ip,he->h_addr_list[0],sizeof(unsigned int));
760 memcpy(&httpaslu,lookup,sizeof(async_dns_lookup));