int StripGETRequestQueryAndFragment(char * request, unsigned int maxQueryLength)
{
if (request==0) { errorID(ASV_ERROR_CALL_WITHOUT_ENOUGH_INPUT); return 0;}
unsigned int length=strlen(request);
if (length==0) { errorID(ASV_ERROR_CALL_WITHOUT_ENOUGH_INPUT); return 0; }
if (length>maxQueryLength) { length=maxQueryLength; }
unsigned int i=0,fragment_pos=length;
while ( (i<length) && (request[i]!='?') /*Query start character*/)
{
if (request[i]=='#' /*Fragment start character*/ ) { fragment_pos=i; }
++i;
}
//fprintf(stderr,"Searching for Query : Request has a %u size , fragment at pos %u/%u \n",length,fragment_pos,length);
if (fragment_pos<length) { request[fragment_pos]=0; /*Disregard any fragments , they are for the client only.. */ }
if (i==length) { return 0; } //<- could not find a ..
if (i+1>=length) { return 0; } //<- found the question mark at i BUT it is the last character so no extension is possible..!
//char * start_of_query = &request[i+1]; // do not include ? ( question mark )
//Null Terminate
request[i]=0;
//fprintf(stderr,"GET Request ( %s ) has a query inlined ( %s ) \n",request,query);
return 1;
}
void cParser::onError(void)
{
skipToEnd();
char buffer[256];
sprintf_s(buffer, 256, "行 %d : ",m_curLine+1);
m_errorDesc = buffer;
if (errorID() == 1)
{
m_errorDesc += "在尝试赋值的时候，没有得到任何可赋值的变量。";
}
else if (errorID() == 2)
{
m_errorDesc += "同一行上出现了两个变量名 :";
m_errorDesc += m_variable;
m_errorDesc += " 和 ";
m_errorDesc += m_curVariable;
}
else if (errorID() == 3)
{
m_errorDesc += "非法变量名。";
}
else
{
m_errorDesc += "未知错误。";
}
testOutput(m_errorDesc);
m_curVariable.clear();
m_variable.clear();
setError(0);
}
unsigned int ServerThreads_DropRootUID()
{
if (ENABLE_DROPPING_UID_ALWAYS ) { /* We fall through and change UID , as a mandatory step.. */} else
if (ENABLE_DROPPING_ROOT_UID_IF_ROOT)
{ /*Check if we are root */
if (getuid()>=1000) { /*Non root id , we can skip dropping our UID with this configuration..*/ return 0; }
//If we fell through it means we are root and dropping root when root is enabled so the code that follows will alter our uid..
} else
{
if (getuid()<1000)
{
errorID(ASV_ERROR_RUNNING_AS_ROOT);
}
return 0;
}
char command_to_get_uid[MAX_FILE_PATH]={0};
snprintf(command_to_get_uid,MAX_FILE_PATH,"id -u %s",USERNAME_UID_FOR_DAEMON);
FILE * fp = popen(command_to_get_uid, "r");
if (fp == 0 ) { fprintf(stderr,"Failed to get our user id ( trying to drop root UID ) \n"); return 0; }
char output[POPEN_BUFFER_SIZE]={0};
/* Read the output a line at a time - output it. */
unsigned int i=0;
//Why is this needed ?
while (fgets(output,POPEN_BUFFER_SIZE , fp) != 0)
{ ++i; /*fprintf(stderr,"\n\nline %u = %s \n",i,output);*/ break; }
/* close */
pclose(fp);
int non_root_uid = atoi(output);
if (non_root_uid<1000)
{
fprintf(stderr,"The user set in USERNAME_UID_FOR_DAEMON=\"%s\" is also root (his uid is %d)\n",USERNAME_UID_FOR_DAEMON,non_root_uid);
if (CHANGE_TO_UID<1000)
{
errorID(ASV_ERROR_FAILED_TO_DROP_ROOT_UID);
non_root_uid=NON_ROOT_UID_IF_USER_FAILS;
} else
{
non_root_uid=CHANGE_TO_UID;
}
}
fprintf(stderr,"setuid(%d);\n",non_root_uid);
return setuid(non_root_uid); // Non Root UID :-P
}
int ReducePathSlashes_Inplace(char * filename)
{
//This piece of code removes excess slashes from resource strings in place
//For example the string public_html/////test.html will become public_html/test.html
//While extra slashes cause no side effects on fopen calls etc , they interfere with the
//hashing functions because public_html//test.html yields a different hash than public_html/test.html ..
//This in turn means cache misses happening without any reason and the cache growing larger for files already
//contained in it , that is why it is worth it to reduce slashes for every incoming request even if it means
//growing the incoming string processing surface ..
//fprintf(stderr,"ReducePathSlashes_Inplace(%s) needs thorough testing .. :P\n",filename);
unsigned int length=strlen(filename);
unsigned int i=0,offset=0;
while (i+offset<length)
{
if ( filename[i+offset]=='/')
{
unsigned int z=i+offset+1;
while ((z<length)&&(filename[z]=='/'))
{
++offset;
++z;
}
if (z>i+offset+1)
{
//We increased the offset ..!
++i; // We dont want to hurt the first slash ..!
//The next character though should be eliminated if offset changed
}
}
if ( (offset>0)&&(i+offset<length) )
{
filename[i]=filename[i+offset];
}
++i;
}
if (strstr(filename,"//")!=0)
{
errorID(ASV_ERROR_REDUCE_SLASHSES_FAILED);
}
if (offset>0)
{
//We have reduced the total slashes..!
//Append new null termination
filename[length-offset]=0;
//fprintf(stderr,"String shortened to %s.. :P\n",filename);
return 1;
}
//fprintf(stderr,"String (%s) was not changed \n",filename);
return 0;
}
int setSocketTimeouts(int clientSock)
{
int errorSettingTimeouts = 1;
#if USE_TIMEOUTS
struct timeval timeout; //We dont need to initialize here , since we initialize on the next step
timeout.tv_sec = (unsigned int) varSocketTimeoutREAD_seconds; timeout.tv_usec = 0;
if (setsockopt (clientSock, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,sizeof(timeout)) < 0)
{ errorID(ASV_ERROR_COULD_NOT_SET_SOCKET_TIMEOUT); errorSettingTimeouts=0; }
timeout.tv_sec = (unsigned int) varSocketTimeoutWRITE_seconds; timeout.tv_usec = 0;
if (setsockopt (clientSock, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout,sizeof(timeout)) < 0)
{ errorID(ASV_ERROR_COULD_NOT_SET_SOCKET_TIMEOUT); errorSettingTimeouts=0; }
#else
#error "It is a terrible idea not to use socket timeouts , this will make the webserver susceptible to DoS attacks..!"
#endif // USE_TIMEOUTS
return errorSettingTimeouts;
}
int getSocketIPAddress(struct AmmServer_Instance * instance , int clientSock , char * ipstr , unsigned int ipstrLength,unsigned int * port)
{
//Lets find out who we are talking to , and if we want to deny him service or not..!
socklen_t len=0;
struct sockaddr_storage addr;
ipstr[0]=0;
strcpy(ipstr,"0.0.0.0");
*port=0;
len = sizeof addr;
if ( getpeername(clientSock, (struct sockaddr*)&addr, &len) == 0 )
{
const char * resolveResult = 0;
// deal with both IPv4 and IPv6:
if (addr.ss_family == AF_INET)
{
struct sockaddr_in *s = (struct sockaddr_in *)&addr;
*port = ntohs(s->sin_port);
resolveResult = inet_ntop(AF_INET, &s->sin_addr, ipstr,ipstrLength);
} else
{ // AF_INET6
struct sockaddr_in6 *s = (struct sockaddr_in6 *)&addr;
*port = ntohs(s->sin6_port);
resolveResult = inet_ntop(AF_INET6, &s->sin6_addr, ipstr,ipstrLength);
}
if (resolveResult == 0)
{
errorID(ASV_ERROR_INNETOP_FAILED); //This could be a reason to drop this connection!
switch ( errno )
{
case EAFNOSUPPORT : warning("The af argument is invalid.\n"); break;
case ENOSPC : warning("The size of the inet_ntop() result buffer is inadequate.\n"); break;
}
}
fprintf(stderr,"%s: Peer IP address: %s , port %d \n", instance->instanceName , ipstr,*port);
} else
{
warning("Could not get peer name..!"); //This could be a reason to drop this connection!
switch ( errno )
{
case EBADF : warning("The argument sockfd is not a valid descriptor."); break;
case EFAULT : warning("The addr argument points to memory not in a valid part of the process address space."); break;
case EINVAL : warning("addrlen is invalid (e.g., is negative)."); break;
case ENOBUFS : warning("Insufficient resources were available in the system to perform the operation."); break;
case ENOTCONN : warning("The socket is not connected."); break;
case ENOTSOCK : warning("The argument sockfd is a file, not a socket."); break;
};
return 0;
}
return 1; // <- TODO add IPv4 , IPv6 IP here
}
int _GENERIC_cpy(const char * what2copy,unsigned int what2copySize,char * where2copy,unsigned int maxSizeWhere2Copy)
{
if (what2copy==0) { return 0; }
if (where2copy==0) { return 0; }
if (what2copySize+1>maxSizeWhere2Copy)
{
errorID(ASV_ERROR_NOT_ENOUGH_MEMORY_ALLOCATED);
return 0;
}
snprintf(where2copy,maxSizeWhere2Copy,"%s",what2copy);
return 1;
}
//You should use AmmCLient instead of this shitty code..!
char * RequestHTTPWebPage(struct AmmServer_Instance * instance,char * hostname,unsigned int port,char * filename,unsigned int max_content)
{
int sockfd;
struct hostent *he=0;
struct sockaddr_in their_addr;
if ((he=gethostbyname(hostname)) == 0) { fprintf(stderr,"Error getting host (%s) by name \n",hostname); return 0; } else
{ printf("Client-The remote host is: %s\n",hostname); }
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { errorID(ASV_ERROR_FAILED_TO_SOCKET); return 0; } else
{ printf("Client socket ok\n"); }
// host byte order
their_addr.sin_family = AF_INET;
// short, network byte order
printf("Server-Using %s:%u...\n",hostname,port);
their_addr.sin_port = htons(port);
their_addr.sin_addr = *((struct in_addr *)he->h_addr);
// zero the rest of the struct
memset(&(their_addr.sin_zero), 0 , 8); // '\0'
if(connect(sockfd, (struct sockaddr *)&their_addr, sizeof(struct sockaddr)) == -1) { errorID(ASV_ERROR_FAILED_TO_CONNECT); return 0; } else
{ printf("Starting Request for filename %s \n",filename); }
#if USE_TIMEOUTS
struct timeval timeout;
timeout.tv_sec = (unsigned int) varSocketTimeoutREAD_seconds; timeout.tv_usec = 0;
if (setsockopt (sockfd, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,sizeof(timeout)) < 0) { fprintf(stderr,"Warning : Could not set socket Receive timeout \n"); }
timeout.tv_sec = (unsigned int) varSocketTimeoutWRITE_seconds; timeout.tv_usec = 0;
if (setsockopt (sockfd, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout,sizeof(timeout)) < 0) { fprintf(stderr,"Warning : Could not set socket Send timeout \n"); }
#else
#error "It is a terrible idea not to use socket timeouts , this will make the webserver susceptible to DoS attacks..!"
#endif // USE_TIMEOUTS
unsigned long bufferSize = (max_content+1) * sizeof(char);
char * buffer = (char*) malloc(bufferSize);
if (buffer!=0)
{
snprintf(buffer,max_content,"GET /%s HTTP/1.1\r\nHost: %s\r\n\r\n",filename,hostname);
struct HTTPTransaction transaction={0}; //This is a dummy call and does not need ASRV_StartSession
transaction.clientSock = sockfd;
int opres = ASRV_Send(instance,&transaction,buffer,strlen(buffer),MSG_WAITALL|MSG_NOSIGNAL); //Send filesize as soon as we've got it
if (opres<=0) { fprintf(stderr,"Error Sending Request data\n"); } else
{
buffer[0]=0;
opres = recv(sockfd,buffer,max_content,0);
if (opres<=0) { fprintf(stderr,"Error Receiving Request data\n"); }
}
safeFree(buffer,bufferSize);
}
close(sockfd);
/** @bug : Check for success or failure on RequestHTTPWebPage and return an appropriate return value */
return 0;
}
int GetContentTypeForExtension(const char * theextension,char * content_type,unsigned int contentTypeLength)
{
//fprintf(stderr,"Resolving Extension %s , length %u \n",theextension,theextensionLength );
if (contentTypeLength<29)
{
errorID(ASV_ERROR_CALL_WITHOUT_ENOUGH_INPUT);
fprintf(stderr,"GetContentTypeForExtension called with a very small buffer ( %u bytes ) \n",contentTypeLength );
return 0;
}
unsigned int theextensionLength = strlen(theextension);
//http://www.iana.org/assignments/media-types/text/index.html
unsigned int ext=scanFor_textFiles(theextension,theextensionLength);
switch (ext)
{
case TEXTFILES_HTML : strcpy(content_type,"text/html"); content_type[9]=0; return 1; break;
case TEXTFILES_HTM : strcpy(content_type,"text/html"); content_type[9]=0; return 1; break;
case TEXTFILES_CSS : strcpy(content_type,"text/css"); content_type[8]=0; return 1; break;
case TEXTFILES_TXT : strcpy(content_type,"text/txt"); content_type[8]=0; return 1; break;
case TEXTFILES_DOC : strcpy(content_type,"text/doc"); content_type[8]=0; return 1; break;
case TEXTFILES_RTF : strcpy(content_type,"text/rtf"); content_type[8]=0; return 1; break;
case TEXTFILES_ODF : strcpy(content_type,"text/odf"); content_type[8]=0; return 1; break;
case TEXTFILES_ODT : strcpy(content_type,"text/odt"); content_type[8]=0; return 1; break;
};
//http://www.iana.org/assignments/media-types/image/index.html
ext=scanFor_imageFiles(theextension,theextensionLength);
switch (ext)
{
case IMAGEFILES_GIF : strcpy(content_type,"image/gif"); content_type[9]=0; return 1; break;
case IMAGEFILES_PNG : strcpy(content_type,"image/png"); content_type[9]=0; return 1; break;
case IMAGEFILES_JPG :
case IMAGEFILES_JPEG : strcpy(content_type,"image/jpg"); content_type[9]=0; return 1; break;
case IMAGEFILES_WEBP : strcpy(content_type,"image/webp"); content_type[10]=0; return 1; break;
case IMAGEFILES_BMP : strcpy(content_type,"image/bmp"); content_type[9]=0; return 1; break;
case IMAGEFILES_TIFF : strcpy(content_type,"image/tiff"); content_type[10]=0; return 1; break;
case IMAGEFILES_DIB : strcpy(content_type,"image/dib"); content_type[9]=0; return 1; break;
case IMAGEFILES_RLE : strcpy(content_type,"image/rle"); content_type[9]=0; return 1; break;
case IMAGEFILES_J2C : strcpy(content_type,"image/j2c"); content_type[9]=0; return 1; break;
case IMAGEFILES_ICO : strcpy(content_type,"image/ico"); content_type[9]=0; return 1; break;
case IMAGEFILES_PPM : strcpy(content_type,"image/ppm"); content_type[9]=0; return 1; break;
case IMAGEFILES_PNM : strcpy(content_type,"image/pnm"); content_type[9]=0; return 1; break;
case IMAGEFILES_RAW : strcpy(content_type,"image/raw"); content_type[9]=0; return 1; break;
case IMAGEFILES_SVG : strcpy(content_type,"image/svg+xml"); content_type[13]=0; return 1; break;
};
//http://www.iana.org/assignments/media-types/video/index.html
ext=scanFor_videoFiles(theextension,theextensionLength);
switch (ext)
{
case VIDEOFILES_AVI : strcpy(content_type,"video/mp4"); content_type[9]=0; return 1; break;
case VIDEOFILES_MPEG4 : strcpy(content_type,"video/mp4"); content_type[9]=0; return 1; break;
case VIDEOFILES_MPEG : strcpy(content_type,"video/mp4"); content_type[9]=0; return 1; break;
case VIDEOFILES_MP4 : strcpy(content_type,"video/mp4"); content_type[9]=0; return 1; break;
case VIDEOFILES_OGV : strcpy(content_type,"video/ogv"); content_type[9]=0; return 1; break;
case VIDEOFILES_WEBM : strcpy(content_type,"video/webm"); content_type[10]=0; return 1; break;
case VIDEOFILES_MKV : strcpy(content_type,"video/mkv"); content_type[9]=0; return 1; break;
case VIDEOFILES_3GP : strcpy(content_type,"video/3gp"); content_type[9]=0; return 1; break;
case VIDEOFILES_H263 : strcpy(content_type,"video/h263"); content_type[10]=0;return 1; break;
case VIDEOFILES_H264 : strcpy(content_type,"video/h264"); content_type[10]=0;return 1; break;
case VIDEOFILES_FLV : strcpy(content_type,"video/x-flv"); content_type[11]=0; return 1; break;
};
//http://www.iana.org/assignments/media-types/audio/index.html
ext=scanFor_audioFiles(theextension,theextensionLength);
switch (ext)
{
case AUDIOFILES_MP3 : strcpy(content_type,"audio/mp3"); content_type[9]=0; return 1; break;
case AUDIOFILES_WAV : strcpy(content_type,"audio/wav"); content_type[9]=0; return 1; break;
case AUDIOFILES_MID : strcpy(content_type,"audio/mid"); content_type[9]=0; return 1; break;
case AUDIOFILES_OGG : strcpy(content_type,"audio/ogg"); content_type[9]=0; return 1; break;
case AUDIOFILES_VOC : strcpy(content_type,"audio/voc"); content_type[9]=0; return 1; break;
case AUDIOFILES_AU : strcpy(content_type,"audio/au"); content_type[8]=0; return 1; break;
};
//http://www.iana.org/assignments/media-types/application/index.html
ext=scanFor_applicationFiles(theextension,theextensionLength);
switch (ext)
{
case APPLICATIONFILES_EXE :
case APPLICATIONFILES_DLL :
case APPLICATIONFILES_SCR :
case APPLICATIONFILES_CPL : strcpy(content_type,"application/exe"); content_type[15]=0; return 1; break;
case APPLICATIONFILES_SWF : strcpy(content_type,"application/x-shockwave-flash"); content_type[29]=0; return 1; break;
case APPLICATIONFILES_PDF : strcpy(content_type,"application/pdf"); content_type[15]=0; return 1; break;
};
ext=scanFor_archiveFiles(theextension,theextensionLength);
switch (ext)
{
case ARCHIVEFILES_GZ : strcpy(content_type,"application/gzip"); content_type[16]=0; return 1; break;
case ARCHIVEFILES_TAR : strcpy(content_type,"application/x-tar"); content_type[17]=0; return 1; break;
case ARCHIVEFILES_TGZ : strcpy(content_type,"application/gnutar"); content_type[18]=0; return 1; break;
case ARCHIVEFILES_ZIP : strcpy(content_type,"application/zip"); content_type[15]=0; return 1; break;
case ARCHIVEFILES_JAR :
case ARCHIVEFILES_7Z :
case ARCHIVEFILES_AR :
case ARCHIVEFILES_BZ2 :
case ARCHIVEFILES_CBZ :
case ARCHIVEFILES_CPIO :
case ARCHIVEFILES_ISO :
case ARCHIVEFILES_LZMA :
case ARCHIVEFILES_TAR_7Z :
case ARCHIVEFILES_TAR_Z :
case ARCHIVEFILES_TAR_GZ :
case ARCHIVEFILES_TAR_BZ2 :
case ARCHIVEFILES_TAR_BZ :
case ARCHIVEFILES_TAR_LZ :
case ARCHIVEFILES_TAR_LZMA :
case ARCHIVEFILES_TAR_XZ :
case ARCHIVEFILES_XZ : strcpy(content_type,"application/octet-stream"); content_type[24]=0; return 1; break;
};
fprintf(stderr,"Could not find extension type for extension %s \n",theextension);
return 0;
}
void * ServeClientAfterUnpackingThreadMessage(void * ptr)
{
// We first have to store the context variables we got through our struct PassToHTTPThread
// so we first need to do that
struct PassToHTTPThread * context = (struct PassToHTTPThread *) ptr;
if (context->keep_var_on_stack!=1)
{
errorID(ASV_ERROR_FAILED_TO_PASS_THREAD_CONTEXT);
fprintf(stderr,"Bad new thread context is pointing to %p\n",context);
return 0;
}
//This is the structure that holds all the state of the current ServeClient transaction
struct AmmServer_Instance * instance = context->instance;
struct HTTPTransaction transaction={0}; // This should get free'ed once it isn't needed any more see FreeHTTPHeader call!
//int close_connection=0; // <- if this is set it means Serve Client must stop
transaction.instance=instance;
//memset(&transaction->incomingHeader,0,sizeof(struct HTTPHeader));
transaction.incomingHeader.headerRAW=0;
transaction.incomingHeader.headerRAWSize=0;
// In order for each thread to (in theory) be able to serve a different virtual website
// we declare the webserver_root etc here and we copy the value from the thread spawning function
// This creates a little code clutter but it is for the best..!
transaction.prespawnedThreadFlag=context->pre_spawned_thread;
transaction.clientSock=context->clientsock;
transaction.threadID = context->thread_id;
if (!transaction.prespawnedThreadFlag)
{
int i = pthread_detach(instance->threads_pool[transaction.threadID]);
if (i!=0)
{
switch (i)
{
case EINVAL : warning("While trying to detach thread , The implementation has detected that the value specified by thread does not refer to a joinable thread."); break;
case ESRCH : warning("While trying to detach thread , No thread could be found corresponding to that specified by the given thread ID."); break;
};
}
}
fprintf(stderr,"Now signaling we are ready (%u)\n",transaction.threadID);
context->keep_var_on_stack=2; //This signals that the thread has processed the message it received..!
fprintf(stderr,"Passing message to HTTP thread is done (%u)\n",transaction.threadID);
ASRV_StartSession(instance,&transaction);
//int i=
ServeClientInternal(instance,&transaction);
ASRV_StopSession(instance,&transaction);
/*
//Removed to reduce spam..!
if (i)
{
//SUCCESS
} else
{
//FAILURE
warning("Could not successfully serve client..");
}
*/
return 0;
}
int ServeClientInternal(struct AmmServer_Instance * instance , struct HTTPTransaction * transaction)
{
if (instance==0) { errorID(ASV_ERROR_INSTANCE_NOT_ALLOCATED); return 0; } else
{ /*fprintf(stderr,"ServeClient instance pointing @ %p \n",instance);*/ }
if (!setSocketTimeouts(transaction->clientSock))
{
errorID(ASV_ERROR_COULD_NOT_SET_SOCKET_TIMEOUT);
fprintf(stderr,"This means something weird is going on , skipping everything");
return 0;
}
transaction->clientListID = findOutClientIDOfPeer(instance ,transaction->clientSock);
//----------------------------- ---------------------------- ----------------------------
// Check if client is banned
//----------------------------- ---------------------------- ----------------------------
int clientIsBanned = clientList_isClientBanned(instance->clientList,transaction->clientListID);
//----------------------------- ---------------------------- ----------------------------
if (!clientIsBanned)
{
//If client is ok go ahead to serve him..
unsigned int keepAliveShots = 1;
while ( ( ServeClientKeepAliveLoop(instance,transaction) ) && (instance->server_running) )
{
//fprintf(stderr,"Another KeepAlive Loop Served ( %u ) \n",keepAliveShots);
++keepAliveShots;
clientIsBanned = clientList_isClientBanned(instance->clientList,transaction->clientListID);
if (clientIsBanned)
{
warningID(ASV_WARNING_CLIENT_DENIED_ACCESS);
SendErrorCodeHeader(instance,transaction,403 /*Forbidden*/,"403.html",instance->templates_root);
break;
}
}
}
//----------------------------- ---------------------------- ----------------------------
//fprintf(stderr,"Done with client / Closing Socket ( %u ) ..\n",transaction->clientSock);
close(transaction->clientSock);
// shutdown(transaction->clientSock,SHUT_RDWR);
if (transaction->incomingHeader.headerRAW!=0)
{
//fprintf(stderr,"Done with client / Freeing incoming memory..\n");
safeFree(transaction->incomingHeader.headerRAW,transaction->incomingHeader.headerRAWSize);
transaction->incomingHeader.headerRAW=0;
}
//fprintf(stderr,"closed\n");
if (!transaction->prespawnedThreadFlag)
{ //If we are running in a prespawned thread it is wrong to count this thread as a *dynamic* one that just stopped !
//Clear thread id handler and we can gracefully exit..! ( LOCKLESS OPERATION)
if (instance->threads_pool[transaction->threadID]==0) { fprintf(stderr,"While exiting thread , thread_pool id[%u] is already zero.. This could be a bug ..\n",transaction->threadID); }
instance->threads_pool[transaction->threadID]=0;
++instance->CLIENT_THREADS_STOPPED;
//We also only want to stop the thread if itsnot prespawned !
//fprintf(stderr,"Exiting Thread\n");
//pthread_join(instance->threads_pool[transaction->threadID],0);
//pthread_exit(0);
//This should make the thread release all of its resources (?)
pthread_detach(pthread_self());
}
return 0;
}
int ServeClientKeepAliveLoop(struct AmmServer_Instance * instance,struct HTTPTransaction * transaction)
{
//Remember the IP of this client..
getSocketIPAddress(instance,transaction->clientSock,transaction->ipStr,MAX_IP_STRING_SIZE,&transaction->port);
//We have our connection / instancing /etc covered if we are here
//In order to serve our client we must first receive the request header , so we do it now..!
int httpHeaderReceivedWithNoProblems = receiveAndHandleHTTPHeaderSentByClient(instance,transaction);
if (!httpHeaderReceivedWithNoProblems)
{
if (transaction->clientDisconnected)
{
warningID(ASV_WARNING_CONNECTION_CLOSED_WHILE_KEEPALIVE);
} else
{
/*We got a bad http request so we will rig it to make server emmit the 400 message*/
errorID(ASV_ERROR_FAILED_TO_RECEIVE_HEADER);
SendErrorFile(instance,transaction,400);
logError(instance,transaction,400,"400.html");
}
return 0;
}
else
if (!clientList_isClientAllowedToUseResource(instance->clientList,transaction->clientListID,transaction->incomingHeader.resource))
{
//Client is forbidden but he is not IP banned to use resource ( already opened too many connections or w/e other reason )
//Doesnt have access to the specific file , etc..!
warningID(ASV_WARNING_CLIENT_DENIED_ACCESS);
SendErrorCodeHeader(instance,transaction,403 ,"403.html",instance->templates_root);
logError(instance,transaction,403,"403.html");
return 0;
} else
if ((instance->settings.PASSWORD_PROTECTION)&&(!transaction->incomingHeader.authorized))
{
errorID(ASV_ERROR_UNAUTHORIZED_REQUEST);
respondToClientRequestingAuthorization(instance,transaction);
return 0;
}
else
{ // Not a Bad request Start
//This is a hack and should be probably be changed..!
if ( ( transaction->incomingHeader.requestType==POST ) && (instance->settings.ENABLE_POST) && (MASTER_ENABLE_POST) )
{
fprintf(stderr,GREEN "POST HEADER : %lu length \n %s \n" NORMAL,transaction->incomingHeader.ContentLength,transaction->incomingHeader.headerRAW);
//TODO ADD Here a possibly rfc1867 , HTTP POST FILE compatible (multipart/form-data) recv handler..
//TODO TODO TODO
fprintf(stderr,"Found a POST query %lu bytes long , %s \n",transaction->incomingHeader.POSTrequestSize, transaction->incomingHeader.POSTrequest);
warningID(ASV_WARNING_PRETENDING_IT_IS_A_GET_REQUEST);
//Will now pretend that we are a GET request for the rest of the page to be served nicely
transaction->incomingHeader.requestType=GET;
}
if (
(transaction->incomingHeader.requestType==GET) ||
(transaction->incomingHeader.requestType==HEAD) ||
(transaction->incomingHeader.requestType==POST)
)
{
char servefile[(MAX_FILE_PATH*2)+1]={0}; // Since we are strcat-ing the file on top of the webserver_root it is only logical to
// reserve space for two MAX_FILE_PATHS they are a software security limitation ( system max_path is much larger ) so its not a problem anywhere..!
int resource_is_a_directory=0,resource_is_a_file=0,resource_is_a_template=0,generate_directory_list=0;
/*!
PART 1 : Sense what we want to serve , and set the flags
resource_is_a_directory , resource_is_a_file , generate_directory_list
accordingly..!
*/
decideAboutHowToHandleRequestedResource
(
instance,
transaction,
servefile,
&resource_is_a_directory,
&resource_is_a_file ,
&resource_is_a_template ,
&generate_directory_list
);
/*!
PART 2 : The flags
resource_is_a_directory , resource_is_a_file , generate_directory_list
have been set to the correct ( :P ) value so all we have to do now is serve the correct repsonse..!
*/
if (resource_is_a_template)
{
//We have a specific request for a file ( transaction->incomingHeader.resource )
fprintf(stderr,"It is a template request for %s ..!\n",servefile);
// ------------------------------------------------------
// ------------------------------------------------------
// ------------------------------------------------------
if (
SendEmbeddedFile
(
instance,
transaction,
servefile // -- Log What was asked to be served
)
)
{
logSuccess(instance,transaction,200,servefile);
}
else
{
//We where unable to serve request , closing connections..\n
errorID(ASV_ERROR_UNABLE_TO_SERVE_TEMPLATE);
return 0;
}
// ------------------------------------------------------
// ------------------------------------------------------
// ------------------------------------------------------
}
else
if (generate_directory_list)
{
respondToClientBySendingAGeneratedDirectoryList(instance,transaction,servefile);
return 0;
}
else
if (resource_is_a_file)
{
//We have a specific request for a file ( transaction->incomingHeader.resource )
//fprintf(stderr,"It is a file request for %s ..!\n",servefile);
// ------------------------------------------------------
// ------------------------------------------------------
// ------------------------------------------------------
if (
SendFile
(
instance,
transaction,
servefile, // -- Log What was asked to be served
0 // <- We dont want to force an error code!
)
)
{
logSuccess(instance,transaction,200,servefile);
}
else
{
//We where unable to serve request , closing connections..\n
errorID(ASV_ERROR_UNABLE_TO_SERVE_REQUEST);
return 0;
}
// ------------------------------------------------------
// ------------------------------------------------------
// ------------------------------------------------------
}
else
{
fprintf(stderr,"404 not found..!!\n");
SendErrorFile(instance,transaction,404);
logError(instance,transaction,404,servefile);
return 0;
}
} else
if (transaction->incomingHeader.requestType==BAD)
{ //In case some of the security features of the server sensed a BAD! request we should log it..
warningID(ASV_WARNING_PREDATORY_REQUST);
//TODO : call -> int ErrorLogAppend(char * IP,char * DateStr,char * Request,unsigned int ResponseCode,unsigned long ResponseLength,char * Location,char * Useragent)
SendErrorFile(instance,transaction,400);
logError(instance,transaction,400,"400.html");
return 0;
} else
if (transaction->incomingHeader.requestType==NONE)
{ //We couldnt find a request type so it is a weird input that doesn't seem to be HTTP based
warningID(ASV_WARNING_UNRECOGNIZED_REQUEST);
SendErrorFile(instance,transaction,400);
logError(instance,transaction,400,"400.html");
return 0;
} else
{ //The request we got requires not implemented functionality , so we will admit not implementing it..! :P
warningID(ASV_WARNING_NOTIMPLEMENTED_REQUEST);
SendErrorFile(instance,transaction,501);
logError(instance,transaction,501,"501.html");
return 0;
}
} // Not a Bad request END
clientList_signalClientStoppedUsingResource(instance->clientList,transaction->clientListID,transaction->incomingHeader.resource); // This in order for client_list to correctly track client behaviour..!
if ( transaction->incomingHeader.headerRAW!=0 )
{
safeFree(transaction->incomingHeader.headerRAW,transaction->incomingHeader.headerRAWSize);
transaction->incomingHeader.headerRAW=0;
}
//We are done with request!
if (!transaction->incomingHeader.keepalive) { return 0; } // Close_connection controls the receive "keep-alive" loop
//If we are on a keepalive streak , then go on !
return 1;
}
void RDSocket::errorData(int error)
{
emit errorID(error,id_num);
}
