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fteqw/engine/http/httpserver.c
Spoike 6c6999ce78 fix misc bugs/issues/warnings. 
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4751 fc73d0e0-1445-4013-8a0c-d673dee63da5
2014-09-14 01:45:11 +00:00

782 lines
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#include "quakedef.h"
#ifdef WEBSERVER
#include "iweb.h"
#include "netinc.h"
//FIXME: Before any admins use this for any serious usage, make the server send bits of file slowly.
static qboolean httpserverinitied = false;
qboolean httpserverfailed = false;
static int httpserversocket;
static int httpserverport;
#ifdef WEBSVONLY
static int natpmpsocket = INVALID_SOCKET;
static int natpmptime;
#include <mmsystem.h>
static void sendnatpmp(int port)
{
struct sockaddr_in router;
struct
{
qbyte ver;
qbyte op;
short reserved1;
short privport; short pubport;
int mapping_expectancy;
} pmpreqmsg;
int curtime = timeGetTime();
if (natpmpsocket == INVALID_SOCKET)
{
unsigned long _true = true;
natpmpsocket = socket(AF_INET, SOCK_DGRAM, 0);
if (natpmpsocket == INVALID_SOCKET)
return;
ioctlsocket (natpmpsocket, FIONBIO, &_true);
}
else if (curtime - natpmptime < 0)
return;
natpmptime = curtime+60*1000;
memset(&router, 0, sizeof(router));
router.sin_family = AF_INET;
router.sin_port = htons(5351);
router.sin_addr.S_un.S_un_b.s_b1 = 192;
router.sin_addr.S_un.S_un_b.s_b2 = 168;
router.sin_addr.S_un.S_un_b.s_b3 = 0;
router.sin_addr.S_un.S_un_b.s_b4 = 1;
pmpreqmsg.ver = 0;
pmpreqmsg.op = 0;
pmpreqmsg.reserved1 = htons(0);
pmpreqmsg.privport = htons(port);
pmpreqmsg.pubport = htons(port);
pmpreqmsg.mapping_expectancy = htons(60*5);
sendto(natpmpsocket, (void*)&pmpreqmsg, 2, 0, (struct sockaddr*)&router, sizeof(router));
pmpreqmsg.op = 2;
sendto(natpmpsocket, (void*)&pmpreqmsg, sizeof(pmpreqmsg), 0, (struct sockaddr*)&router, sizeof(router));
}
void checknatpmp(int port)
{
struct
{
qbyte ver; qbyte op; short resultcode;
int age;
union
{
struct
{
short privport; short pubport;
int mapping_expectancy;
};
qbyte ipv4[4];
};
} pmpreqrep;
struct sockaddr_in from;
int fromlen = sizeof(from);
int len;
static int oldip=-1;
static short oldport;
memset(&pmpreqrep, 0, sizeof(pmpreqrep));
sendnatpmp(port);
if (natpmpsocket == INVALID_SOCKET)
len = -1;
else
len = recvfrom(natpmpsocket, (void*)&pmpreqrep, sizeof(pmpreqrep), 0, (struct sockaddr*)&from, &fromlen);
if (len == 12 && pmpreqrep.op == 128)
{
if (oldip != *(int*)pmpreqrep.ipv4)
{
oldip = *(int*)pmpreqrep.ipv4;
oldport = 0;
IWebPrintf("Public ip is %i.%i.%i.%i\n", pmpreqrep.ipv4[0], pmpreqrep.ipv4[1], pmpreqrep.ipv4[2], pmpreqrep.ipv4[3]);
}
}
else if (len == 16 && pmpreqrep.op == 129)
{
if (oldport != pmpreqrep.pubport)
{
oldport = pmpreqrep.pubport;
IWebPrintf("Public udp port %i (local %i)\n", ntohs(pmpreqrep.pubport), ntohs(pmpreqrep.privport));
}
}
else if (len == 16 && pmpreqrep.op == 130)
{
if (oldport != pmpreqrep.pubport)
{
oldport = pmpreqrep.pubport;
IWebPrintf("Public tcp port %i (local %i)\n", ntohs(pmpreqrep.pubport), ntohs(pmpreqrep.privport));
}
}
}
#else
void checknatpmp(int port)
{
}
#endif
typedef enum {HTTP_WAITINGFORREQUEST,HTTP_SENDING} http_mode_t;
qboolean HTTP_ServerInit(int port)
{
struct sockaddr_in address;
unsigned long _true = true;
int i;
if ((httpserversocket = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
{
IWebPrintf ("HTTP_ServerInit: socket: %s\n", strerror(neterrno()));
httpserverfailed = true;
return false;
}
if (ioctlsocket (httpserversocket, FIONBIO, &_true) == -1)
{
IWebPrintf ("HTTP_ServerInit: ioctl FIONBIO: %s\n", strerror(neterrno()));
httpserverfailed = true;
return false;
}
address.sin_family = AF_INET;
//check for interface binding option
if ((i = COM_CheckParm("-ip")) != 0 && i < com_argc)
{
address.sin_addr.s_addr = inet_addr(com_argv[i+1]);
Con_TPrintf("Binding to IP Interface Address of %s\n",
inet_ntoa(address.sin_addr));
}
else
address.sin_addr.s_addr = INADDR_ANY;
if (port == PORT_ANY)
address.sin_port = 0;
else
address.sin_port = htons((short)port);
if( bind (httpserversocket, (void *)&address, sizeof(address)) == -1)
{
closesocket(httpserversocket);
IWebPrintf("HTTP_ServerInit: failed to bind to socket\n");
httpserverfailed = true;
return false;
}
listen(httpserversocket, 3);
httpserverinitied = true;
httpserverfailed = false;
httpserverport = port;
IWebPrintf("HTTP server is running\n");
return true;
}
void HTTP_ServerShutdown(void)
{
closesocket(httpserversocket);
IWebPrintf("HTTP server closed\n");
httpserverinitied = false;
}
typedef struct HTTP_active_connections_s {
SOCKET datasock;
char peername[256];
vfsfile_t *file;
struct HTTP_active_connections_s *next;
http_mode_t mode;
qboolean modeswitched;
qboolean closeaftertransaction;
char *closereason;
qboolean acceptgzip;
char *inbuffer;
unsigned int inbuffersize;
unsigned int inbufferused;
char *outbuffer;
unsigned int outbuffersize;
unsigned int outbufferused;
} HTTP_active_connections_t;
static HTTP_active_connections_t *HTTP_ServerConnections;
static int httpconnectioncount;
static void ExpandInBuffer(HTTP_active_connections_t *cl, unsigned int quant, qboolean fixedsize)
{
unsigned int newsize;
if (fixedsize)
newsize = quant;
else
newsize = cl->inbuffersize+quant;
if (newsize <= cl->inbuffersize)
return;
cl->inbuffer = IWebRealloc(cl->inbuffer, newsize);
cl->inbuffersize = newsize;
}
static void ExpandOutBuffer(HTTP_active_connections_t *cl, unsigned int quant, qboolean fixedsize)
{
unsigned int newsize;
if (fixedsize)
newsize = quant;
else
newsize = cl->outbuffersize+quant;
if (newsize <= cl->outbuffersize)
return;
cl->outbuffer = IWebRealloc(cl->outbuffer, newsize);
cl->outbuffersize = newsize;
}
void HTTP_RunExisting (void)
{
char *content;
char *msg, *nl;
char buf2[2560]; //short lived temp buffer.
char resource[2560];
char host[256];
char mode[80];
qboolean hostspecified;
unsigned int contentlen;
int HTTPmarkup; //version
int localerrno;
HTTP_active_connections_t **link, *cl;
link = &HTTP_ServerConnections;
for (link = &HTTP_ServerConnections; *link;)
{
int ammount, wanted;
cl = *link;
if (cl->closereason)
{
IWebPrintf("%s: Closing connection: %s\n", cl->peername, cl->closereason);
*link = cl->next;
closesocket(cl->datasock);
cl->datasock = INVALID_SOCKET;
if (cl->inbuffer)
IWebFree(cl->inbuffer);
if (cl->outbuffer)
IWebFree(cl->outbuffer);
if (cl->file)
VFS_CLOSE(cl->file);
IWebFree(cl);
httpconnectioncount--;
continue;
}
link = &(*link)->next;
switch(cl->mode)
{
case HTTP_WAITINGFORREQUEST:
if (cl->outbufferused)
Sys_Error("Persistant connection was waiting for input with unsent output");
ammount = cl->inbuffersize-1 - cl->inbufferused;
if (ammount < 128)
{
if (cl->inbuffersize>128*1024)
{
cl->closereason = "headers larger than 128kb"; //that's just taking the piss.
continue;
}
ExpandInBuffer(cl, 1500, false);
ammount = cl->inbuffersize-1 - cl->inbufferused;
}
if (cl->modeswitched)
{
ammount = 0;
}
else
{
//we can't try and recv 0 bytes as we use an expanding buffer
ammount = recv(cl->datasock, cl->inbuffer+cl->inbufferused, ammount, 0);
if (ammount < 0)
{
if (neterrno() != NET_EWOULDBLOCK) //they closed on us. Assume end.
{
cl->closereason = "recv error";
}
continue;
}
if (ammount == 0)
{
cl->closereason = "peer closed connection";
continue;
}
}
cl->modeswitched = false;
cl->inbufferused += ammount;
cl->inbuffer[cl->inbufferused] = '\0';
content = NULL;
msg = cl->inbuffer;
nl = strchr(msg, '\n');
if (!nl)
{
cont:
continue; //we need more... MORE!!! MORE I TELL YOU!!!!
}
//FIXME: COM_ParseOut recognises // comments, which is not correct.
msg = COM_ParseOut(msg, mode, sizeof(mode));
msg = COM_ParseOut(msg, resource, sizeof(resource));
if (!*resource)
{
cl->closereason = "not http"; //even if they forgot to specify a resource, we didn't find an HTTP so we have no option but to close.
continue;
}
host[0] = '?';
host[1] = 0;
hostspecified = false;
if (!strnicmp(resource, "http://", 7))
{ //groan... 1.1 compliance requires parsing this correctly, without the client ever specifiying it.
char *slash; //we don't do multiple hosts.
hostspecified=true;
slash = strchr(resource+7, '/');
if (!slash)
strcpy(resource, "/");
else
{
int hlen = slash-(resource+7);
if (hlen > sizeof(host)-1)
hlen = sizeof(host)-1;
memcpy(host, resource+7, hlen);
host[hlen] = 0;
memmove(resource, slash, strlen(slash+1)); //just get rid of the http:// stuff.
}
}
if (!strcmp(resource, "/"))
strcpy(resource, "/index.html");
cl->acceptgzip = false;
msg = COM_ParseOut(msg, buf2, sizeof(buf2));
contentlen = 0;
if (!strnicmp(buf2, "HTTP/", 5))
{
if (!strncmp(buf2, "HTTP/1.1", 8))
{
HTTPmarkup = 3;
cl->closeaftertransaction = false;
}
else if (!strncmp(buf2, "HTTP/1", 6))
{
HTTPmarkup = 2;
cl->closeaftertransaction = true;
}
else
{
HTTPmarkup = 1; //0.9... lamer.
cl->closeaftertransaction = true;
}
//expect X lines containing options.
//then a blank line. Don't continue till we have that.
msg = nl+1;
while (1)
{
if (*msg == '\r')
msg++;
if (*msg == '\n')
{
msg++;
break; //that was our blank line.
}
while(*msg == ' ')
msg++;
if (!strnicmp(msg, "Host: ", 6)) //parse needed header fields
{
int l = 0;
msg += 6;
while (*msg == ' ' || *msg == '\t')
msg++;
while (*msg != '\r' && *msg != '\n' && l < sizeof(host)-1)
host[l++] = *msg++;
host[l] = 0;
hostspecified = true;
}
else if (!strnicmp(msg, "Content-Length: ", 16)) //parse needed header fields
contentlen = strtoul(msg+16, NULL, 0);
else if (!strnicmp(msg, "Accept-Encoding:", 16)) //parse needed header fields
{
char *e;
msg += 16;
while(*msg)
{
if (*msg == '\n')
break;
while (*msg == ' ' || *msg == '\t')
msg++;
if (*msg == ',')
{
msg++;
continue;
}
e = msg;
while(*e)
{
if (*e == ',' || *e == '\r' || *e == '\n')
break;
e++;
}
while(e > msg && (e[-1] == ' ' || e[-1] == '\t'))
e--;
if (e-msg == 4 && !strncmp(msg, "gzip", 4))
cl->acceptgzip = true;
while(*msg && *msg != '\n' && *msg != ',')
msg++;
}
}
else if (!strnicmp(msg, "Transfer-Encoding: ", 18)) //parse needed header fields
{
cl->closeaftertransaction = true;
goto notimplemented;
}
else if (!strnicmp(msg, "Connection: close", 17))
cl->closeaftertransaction = true;
else if (!strnicmp(msg, "Connection: Keep-Alive", 22))
cl->closeaftertransaction = false;
while(*msg != '\n')
{
if (!*msg)
{
goto cont;
}
msg++;
}
msg++;
}
}
else
{
HTTPmarkup = 0; //strimmed... totally...
cl->closeaftertransaction = true;
//don't bother running to nl.
}
if (cl->inbufferused-(msg-cl->inbuffer) < contentlen)
continue;
cl->modeswitched = true;
if (contentlen)
{
content = IWebMalloc(contentlen+1);
memcpy(content, msg, contentlen+1);
}
memmove(cl->inbuffer, cl->inbuffer+(msg-cl->inbuffer+contentlen), cl->inbufferused-(msg-cl->inbuffer+contentlen));
cl->inbufferused -= msg-cl->inbuffer+contentlen;
if (HTTPmarkup == 3 && !hostspecified) //1.1 requires the host to be specified... we ca,just ignore it as we're not routing or imitating two servers. (for complience we need to encourage the client to send - does nothing for compatability or anything, just compliance to spec. not always the same thing)
{
msg = "HTTP/1.1 400 Bad Request\r\n" /*"Content-Type: application/octet-stream\r\n"*/ "Content-Length: 69\r\n" "Server: "FULLENGINENAME"/0\r\n" "\r\n" "400 Bad Request\r\nYour client failed to provide the host header line";
IWebPrintf("%s: no host specified\n", cl->peername);
ammount = strlen(msg);
ExpandOutBuffer(cl, ammount, true);
memcpy(cl->outbuffer, msg, ammount);
cl->outbufferused = ammount;
cl->mode = HTTP_SENDING;
}
else if (!stricmp(mode, "GET") || !stricmp(mode, "HEAD") || !stricmp(mode, "POST"))
{
qboolean gzipped = false;
if (*resource != '/')
{
resource[0] = '/';
resource[1] = 0; //I'm lazy, they need to comply
}
IWebPrintf("%s: Download request for \"http://%s/%s\"\n", cl->peername, host, resource+1);
if (!strnicmp(mode, "P", 1)) //when stuff is posted, data is provided. Give an error message if we couldn't do anything with that data.
cl->file = IWebGenerateFile(resource+1, content, contentlen);
else
{
cl->file = NULL;
if (SV_AllowDownload(resource+1))
{
char nbuf[MAX_OSPATH];
if (cl->acceptgzip && strlen(resource+1) < sizeof(nbuf)-4)
{
sprintf(nbuf, "%s.gz", resource+1);
cl->file = FS_OpenVFS(nbuf, "rb", FS_GAME);
}
if (cl->file)
gzipped = true;
else
cl->file = FS_OpenVFS(resource+1, "rb", FS_GAME);
}
if (!cl->file)
{
cl->file = IWebGenerateFile(resource+1, content, contentlen);
}
}
if (!cl->file)
{
IWebPrintf("%s: 404 - not found\n", cl->peername);
if (HTTPmarkup >= 3)
msg = "HTTP/1.1 404 Not Found\r\n" "Content-Type: text/plain\r\n" "Content-Length: 15\r\n" "Server: "FULLENGINENAME"/0\r\n" "\r\n" "404 Bad address";
else if (HTTPmarkup == 2)
msg = "HTTP/1.0 404 Not Found\r\n" "Content-Type: text/plain\r\n" "Content-Length: 15\r\n" "Server: "FULLENGINENAME"/0\r\n" "\r\n" "404 Bad address";
else if (HTTPmarkup)
msg = "HTTP/0.9 404 Not Found\r\n" "\r\n" "404 Bad address";
else
msg = "<HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY>404 Not Found<BR>The specified file could not be found on the server</HEAD></HTML>";
ammount = strlen(msg);
ExpandOutBuffer(cl, ammount, true);
memcpy(cl->outbuffer, msg, ammount);
cl->outbufferused = ammount;
cl->mode = HTTP_SENDING;
}
else
{
//fixme: add connection: keep-alive or whatever so that ie3 is happy...
if (HTTPmarkup>=3)
sprintf(resource, "HTTP/1.1 200 OK\r\n" "%s%s" "Connection: %s\r\n" "Content-Length: %i\r\n" "Server: "FULLENGINENAME"/0\r\n" "\r\n", strstr(resource, ".htm")?"Content-Type: text/html\r\n":"", gzipped?"Content-Encoding: gzip\r\nCache-Control: public, max-age=86400\r\n":"", cl->closeaftertransaction?"close":"keep-alive", (int)VFS_GETLEN(cl->file));
else if (HTTPmarkup==2)
sprintf(resource, "HTTP/1.0 200 OK\r\n" "%s%s" "Connection: %s\r\n" "Content-Length: %i\r\n" "Server: "FULLENGINENAME"/0\r\n" "\r\n", strstr(resource, ".htm")?"Content-Type: text/html\r\n":"", gzipped?"Content-Encoding: gzip\r\nCache-Control: public, max-age=86400\r\n":"", cl->closeaftertransaction?"close":"keep-alive", (int)VFS_GETLEN(cl->file));
else if (HTTPmarkup)
sprintf(resource, "HTTP/0.9 200 OK\r\n\r\n");
else
strcpy(resource, "");
msg = resource;
if (*mode == 'H' || *mode == 'h')
{
VFS_CLOSE(cl->file);
cl->file = NULL;
}
ammount = strlen(msg);
ExpandOutBuffer(cl, ammount, true);
memcpy(cl->outbuffer, msg, ammount);
cl->outbufferused = ammount;
cl->mode = HTTP_SENDING;
}
}
//PUT/POST must support chunked transfer encoding for 1.1 compliance.
/* else if (!stricmp(mode, "PUT")) //put is replacement of a resource. (file uploads)
{
}
*/
else
{
notimplemented:
if (HTTPmarkup >= 3)
msg = "HTTP/1.1 501 Not Implemented\r\n\r\n";
else if (HTTPmarkup == 2)
msg = "HTTP/1.0 501 Not Implemented\r\n\r\n";
else if (HTTPmarkup)
msg = "HTTP/0.9 501 Not Implemented\r\n\r\n";
else
{
msg = NULL;
cl->closereason = "unsupported http version";
}
IWebPrintf("%s: 501 - not implemented\n", cl->peername);
if (msg)
{
ammount = strlen(msg);
ExpandOutBuffer(cl, ammount, true);
memcpy(cl->outbuffer, msg, ammount);
cl->outbufferused = ammount;
cl->mode = HTTP_SENDING;
}
}
if (content)
IWebFree(content);
break;
case HTTP_SENDING:
if (cl->outbufferused < 8192)
{
if (cl->file)
{
ExpandOutBuffer(cl, 32768, true);
wanted = cl->outbuffersize - cl->outbufferused;
ammount = VFS_READ(cl->file, cl->outbuffer+cl->outbufferused, wanted);
if (!ammount)
{
VFS_CLOSE(cl->file);
cl->file = NULL;
IWebPrintf("%s: Download complete\n", cl->peername);
}
else
cl->outbufferused+=ammount;
}
}
ammount = send(cl->datasock, cl->outbuffer, cl->outbufferused, 0);
if (ammount == -1)
{
localerrno = neterrno();
if (localerrno != NET_EWOULDBLOCK)
{
cl->closereason = "some error when sending";
}
}
else if (ammount||!cl->outbufferused)
{
memcpy(cl->outbuffer, cl->outbuffer+ammount, cl->outbufferused-ammount);
cl->outbufferused -= ammount;
if (!cl->outbufferused && !cl->file)
{
cl->modeswitched = true;
cl->mode = HTTP_WAITINGFORREQUEST;
if (cl->closeaftertransaction)
cl->closereason = "file sent";
}
}
else
cl->closereason = "peer prematurely closed connection";
break;
/* case HTTP_RECEIVING:
sent = recv(cl->datasock, resource, ammount, 0);
if (sent == -1)
{
if (qerrno != EWOULDBLOCK) //they closed on us. Assume end.
{
VFS_CLOSE(cl->file);
cl->file = NULL;
cl->close = true;
continue;
}
}
if (sent != 0)
IWebFWrite(resource, 1, sent, cl->file);
break;*/
}
}
}
#ifdef WEBSVONLY
void VARGS Q_snprintfz (char *dest, size_t size, const char *fmt, ...)
{
va_list args;
va_start (args, fmt);
vsnprintf (dest, size-1, fmt, args);
va_end (args);
//make sure its terminated.
dest[size-1] = 0;
}
#endif
qboolean HTTP_ServerPoll(qboolean httpserverwanted, int portnum) //loop while true
{
struct sockaddr_qstorage from;
int fromlen;
int clientsock;
int _true = true;
HTTP_active_connections_t *cl;
if (httpserverport != portnum && httpserverinitied)
HTTP_ServerShutdown();
if (!httpserverinitied)
{
if (httpserverwanted)
return HTTP_ServerInit(portnum);
return false;
}
else if (!httpserverwanted)
{
HTTP_ServerShutdown();
return false;
}
checknatpmp(httpserverport);
if (httpconnectioncount>32)
return false;
fromlen = sizeof(from);
clientsock = accept(httpserversocket, (struct sockaddr *)&from, &fromlen);
if (clientsock == -1)
{
int e = neterrno();
if (e == NET_EWOULDBLOCK)
{
HTTP_RunExisting();
return false;
}
if (e == NET_ECONNABORTED || e == NET_ECONNRESET)
{
Con_TPrintf ("Connection lost or aborted\n");
return false;
}
IWebPrintf ("NET_GetPacket: %s\n", strerror(e));
return false;
}
if (ioctlsocket (clientsock, FIONBIO, (u_long *)&_true) == -1)
{
IWebPrintf ("HTTP_ServerInit: ioctl FIONBIO: %s\n", strerror(neterrno()));
closesocket(clientsock);
return false;
}
cl = IWebMalloc(sizeof(HTTP_active_connections_t));
#ifndef WEBSVONLY
{
netadr_t na;
SockadrToNetadr(&from, &na);
NET_AdrToString(cl->peername, sizeof(cl->peername), &na);
}
#else
Q_snprintfz(cl->peername, sizeof(cl->peername), "%s:%i", inet_ntoa(((struct sockaddr_in*)&from)->sin_addr), ntohs(((struct sockaddr_in*)&from)->sin_port));
#endif
IWebPrintf("%s: New http connection\n", cl->peername);
cl->datasock = clientsock;
cl->next = HTTP_ServerConnections;
HTTP_ServerConnections = cl;
httpconnectioncount++;
return true;
}
#endif
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