/** SLPReg callback routine for NetworkRqstRply.
*
* @param[in] errorcode - The network operation SLPError result.
* @param[in] peeraddr - The network address of the responder.
* @param[in] replybuf - The response buffer from the network request.
* @param[in] cookie - Callback context data from ProcessSrvReg.
*
* @return SLP_FALSE (to stop any iterative callbacks).
*
* @note The SLPv2 wire protocol error codes are negated values of SLP
* API error codes (SLPError values). Thus, the algorithm for converting
* from an SLPv2 wire protocol error to a client SLPReg error is to simply
* negate the wire protocol error value and cast the result to an SLPError.
*
* @todo Verify that no non-SLPError wire values make it back to this
* routine, to be mis-converted into a non-existent SLPError value.
*
* @internal
*/
static SLPBoolean CallbackSrvReg(SLPError errorcode,
void * peeraddr, SLPBuffer replybuf, void * cookie)
{
SLPHandleInfo * handle = (SLPHandleInfo *)cookie;
/* Check the errorcode and bail if it is set. */
if (errorcode == 0)
{
/* Parse the replybuf into a message. */
SLPMessage * replymsg = SLPMessageAlloc();
if (replymsg)
{
errorcode = (SLPError)(-SLPMessageParseBuffer(
peeraddr, 0, replybuf, replymsg));
if (errorcode == 0
&& replymsg->header.functionid == SLP_FUNCT_SRVACK)
errorcode = (SLPError)(-replymsg->body.srvack.errorcode);
else
errorcode = SLP_NETWORK_ERROR;
SLPMessageFree(replymsg);
}
else
errorcode = SLP_MEMORY_ALLOC_FAILED;
}
/* Call the user's callback function. */
handle->params.reg.callback(handle, errorcode,
handle->params.reg.cookie);
return SLP_FALSE;
}
/** SLPFindSrvTypes callback routine for NetworkRqstRply.
*
* @param[in] errorcode - The network operation error code.
* @param[in] peerinfo - The network address of the responder.
* @param[in] replybuf - The response buffer from the network request.
* @param[in] cookie - Callback context data from ProcessSrvReg.
*
* @return SLP_FALSE (to stop any iterative callbacks).
*
* @internal
*/
static SLPBoolean ProcessSrvTypeRplyCallback(SLPError errorcode,
void * peerinfo, SLPBuffer replybuf, void * cookie)
{
SLPMessage * replymsg;
SLPBoolean result = SLP_TRUE;
SLPHandleInfo * handle = (SLPHandleInfo *)cookie;
/* Check the errorcode and bail if it is set. */
if (errorcode)
return CollateToSLPSrvTypeCallback(handle, 0, errorcode);
/* Parse the replybuf. */
replymsg = SLPMessageAlloc();
if (replymsg)
{
if (!SLPMessageParseBuffer(peerinfo, 0, replybuf, replymsg)
&& replymsg->header.functionid == SLP_FUNCT_SRVTYPERPLY
&& !replymsg->body.srvtyperply.errorcode)
{
SLPSrvTypeRply * srvtyperply = &replymsg->body.srvtyperply;
if (srvtyperply->srvtypelistlen)
result = CollateToSLPSrvTypeCallback((SLPHandle)handle,
srvtyperply->srvtypelist, srvtyperply->errorcode * -1);
}
SLPMessageFree(replymsg);
}
return result;
}
/*=========================================================================*/
void SLPDLogTraceMsg(const char* prefix,
struct sockaddr_in* peeraddr,
SLPBuffer buf)
/*=========================================================================*/
{
SLPMessage msg;
if(G_SlpdProperty.traceMsg)
{
msg = SLPMessageAlloc();
if(msg)
{
if(SLPMessageParseBuffer(buf,msg) == 0)
{
SLPLog("----------------------------------------\n");
SLPLog("traceMsg %s:\n",prefix);
SLPLog("----------------------------------------\n");
SLPDLogPeerAddr(peeraddr);
SLPDLogMessage(msg);
SLPLog("\n");
}
}
SLPMessageFree(msg);
}
}
/*----------------------------------------------------------------------------*/
SLPBoolean ProcessSrvTypeRplyCallback(SLPError errorcode,
struct sockaddr_in* peerinfo,
SLPBuffer replybuf,
void* cookie)
/*----------------------------------------------------------------------------*/
{
SLPMessage replymsg;
SLPSrvTypeRply* srvtyperply;
PSLPHandleInfo handle = (PSLPHandleInfo) cookie;
SLPBoolean result = SLP_TRUE;
/*-------------------------------------------*/
/* Check the errorcode and bail if it is set */
/*-------------------------------------------*/
if(errorcode)
{
return ColateSrvTypeCallback((SLPHandle)handle,
0,
errorcode,
handle->params.findsrvtypes.cookie);
}
/*--------------------*/
/* Parse the replybuf */
/*--------------------*/
replymsg = SLPMessageAlloc();
if(replymsg)
{
if(SLPMessageParseBuffer(peerinfo,replybuf,replymsg) == 0 &&
replymsg->header.functionid == SLP_FUNCT_SRVTYPERPLY &&
replymsg->body.srvtyperply.errorcode == 0)
{
srvtyperply = &(replymsg->body.srvtyperply);
if(srvtyperply->srvtypelistlen)
{
/*------------------------------------------*/
/* Send the service type list to the caller */
/*------------------------------------------*/
/* TRICKY: null terminate the srvtypelist by setting the last byte 0 */
((char*)(srvtyperply->srvtypelist))[srvtyperply->srvtypelistlen] = 0;
/* Call the callback function */
result = ColateSrvTypeCallback((SLPHandle)handle,
srvtyperply->srvtypelist,
srvtyperply->errorcode * - 1,
handle->params.findsrvtypes.cookie);
}
}
SLPMessageFree(replymsg);
}
return result;
}
/*-------------------------------------------------------------------------*/
SLPBoolean CallbackSrvReg(SLPError errorcode,
struct sockaddr_in* peerinfo,
SLPBuffer replybuf,
void* cookie)
/*-------------------------------------------------------------------------*/
{
SLPMessage replymsg;
PSLPHandleInfo handle = (PSLPHandleInfo) cookie;
/*-------------------------------------------*/
/* Check the errorcode and bail if it is set */
/*-------------------------------------------*/
if(errorcode == 0)
{
/*--------------------*/
/* Parse the replybuf */
/*--------------------*/
replymsg = SLPMessageAlloc();
if(replymsg)
{
errorcode = SLPMessageParseBuffer(peerinfo,replybuf,replymsg);
if(errorcode == 0)
{
if(replymsg->header.functionid == SLP_FUNCT_SRVACK)
{
errorcode = replymsg->body.srvack.errorcode * - 1;
}
}
SLPMessageFree(replymsg);
}
else
{
errorcode = SLP_MEMORY_ALLOC_FAILED;
}
}
/*----------------------------*/
/* Call the callback function */
/*----------------------------*/
handle->params.reg.callback((SLPHandle)handle,
errorcode,
handle->params.reg.cookie);
return SLP_FALSE;
}
/*-------------------------------------------------------------------------*/
SLPError ProcessSrvDeReg(PSLPHandleInfo handle)
/*-------------------------------------------------------------------------*/
{
struct timeval timeout;
struct sockaddr peeraddr;
int peeraddrlen = sizeof(peeraddr);
int size = 0;
SLPError error = 0;
SLPBuffer buf = 0;
SLPMessage msg = 0;
int xid = XidGenerate();
/*-----------------------*/
/* allocate a SLPMessage */
/*-----------------------*/
msg = SLPMessageAlloc();
if(msg == 0)
{
error = SLP_MEMORY_ALLOC_FAILED;
goto FINISHED;
}
/*-------------------------------------------------------------*/
/* ensure the buffer is big enough to handle the whole srvreg */
/*-------------------------------------------------------------*/
size = handle->langtaglen + 14; /* 14 bytes for header */
size += handle->params.dereg.scopelistlen + 2; /* 2 bytes for len field*/
size += handle->params.dereg.urllen + 8; /* 1 byte for reserved */
/* 2 bytes for lifetime */
/* 2 bytes for urllen */
/* 1 byte for authcount */
size += 2; /* 2 bytes for taglistlen*/
/* TODO: Fix this for authentication */
buf = SLPBufferAlloc(size);
if(buf == 0)
{
error = SLP_MEMORY_ALLOC_FAILED;
goto FINISHED;
}
/*----------------*/
/* Add the header */
/*----------------*/
/*version*/
*(buf->start) = 2;
/*function id*/
*(buf->start + 1) = SLP_FUNCT_SRVDEREG;
/*length*/
ToUINT24(buf->start + 2,size);
/*flags*/
ToUINT16(buf->start + 5, 0);
/*ext offset*/
ToUINT24(buf->start + 7,0);
/*xid*/
ToUINT16(buf->start + 10,xid);
/*lang tag len*/
ToUINT16(buf->start + 12,handle->langtaglen);
/*lang tag*/
memcpy(buf->start + 14,
handle->langtag,
handle->langtaglen);
/*--------------------------*/
/* Add rest of the SrvDeReg */
/*--------------------------*/
buf->curpos = buf->curpos + handle->langtaglen + 14;
/* scope list */
ToUINT16(buf->curpos,handle->params.dereg.scopelistlen);
buf->curpos = buf->curpos + 2;
memcpy(buf->curpos,
handle->params.dereg.scopelist,
handle->params.dereg.scopelistlen);
buf->curpos = buf->curpos + handle->params.dereg.scopelistlen;
/* url-entry reserved */
*buf->curpos = 0;
buf->curpos = buf->curpos + 1;
/* url-entry lifetime */
ToUINT16(buf->curpos, 0);
buf->curpos = buf->curpos + 2;
/* url-entry urllen */
ToUINT16(buf->curpos,handle->params.dereg.urllen);
buf->curpos = buf->curpos + 2;
/* url-entry url */
memcpy(buf->curpos,
handle->params.dereg.url,
handle->params.dereg.urllen);
buf->curpos = buf->curpos + handle->params.dereg.urllen;
/* url-entry authcount */
*buf->curpos = 0;
buf->curpos = buf->curpos + 1;
/* TODO: put in urlentry authentication stuff too */
/* TODO: put tag list stuff in*/
ToUINT16(buf->curpos,0);
/*------------------------*/
/* Send the SrvDeReg */
/*------------------------*/
timeout.tv_sec = atoi(SLPGetProperty("net.slp.unicastMaximumWait")) / 1000;
timeout.tv_usec = 0;
buf->curpos = buf->start;
error = NetworkSendMessage(handle->slpdsock,
buf,
&timeout,
&(handle->slpdaddr),
sizeof(handle->slpdaddr));
if(error == SLP_OK)
{
/* Recv the SrvAck */
error = NetworkRecvMessage(handle->slpdsock,
buf,
&timeout,
&peeraddr,
&peeraddrlen);
if(error == SLP_OK)
{
/* parse the SrvAck message */
error = SLPMessageParseBuffer(buf,msg);
if(error == SLP_OK)
{
if(msg->header.xid == xid &&
msg->header.functionid == SLP_FUNCT_SRVACK)
{
/* map and use errorcode from message */
error = -(msg->body.srvack.errorcode);
}
else
{
error = SLP_NETWORK_ERROR;
}
}
}
}
FINISHED:
/* call callback function */
handle->params.dereg.callback((SLPHandle)handle,
error,
handle->params.dereg.cookie);
/* free resources */
SLPBufferFree(buf);
SLPMessageFree(msg);
return 0;
}
/*=========================================================================*/
void SLPDLogMessage(int msglogflags,
struct sockaddr_storage* peerinfo,
struct sockaddr_storage* localaddr,
SLPBuffer buf)
/* Log record of receiving or sending an SLP Message. Logging will only */
/* occur if message logging is enabled G_SlpProperty.traceMsg != 0 */
/* */
/* msglogflags (IN) What type of message to log */
/* */
/* peerinfo (IN) the source or destination peer */
/* */
/* peerinfo (IN) the local address */
/* */
/* msg (IN) the message to log */
/* */
/* Returns: none */
/*=========================================================================*/
{
SLPMessage msg;
char addr_str[INET6_ADDRSTRLEN];
if (peerinfo == NULL ||
buf == NULL)
{
return;
}
if ((G_SlpdProperty.traceMsg && (msglogflags & SLPDLOG_TRACEMSG)) ||
(G_SlpdProperty.traceDrop && (msglogflags & SLPDLOG_TRACEDROP)) )
{
/* Don't log localhost traffic since it is probably IPC */
/* and don't log empty messages */
if (!SLPNetIsLocal(peerinfo) && buf->end != buf->start)
{
msg = SLPMessageAlloc();
if (msg)
{
SLPDLog("\n");
SLPDLogTime();
SLPDLog("MESSAGE - ");
if (msglogflags == SLPDLOG_TRACEMSG_OUT)
{
SLPDLog("Trace message (OUT)\n");
}
else if (msglogflags == SLPDLOG_TRACEMSG_IN)
{
SLPDLog("Trace message (IN)\n");
}
else if (msglogflags == SLPDLOG_TRACEDROP)
{
SLPDLog("Dropped message (following message silently ignored)\n");
}
else
{
SLPDLog("\n");
}
if (SLPMessageParseBuffer(peerinfo,localaddr,buf,msg) == 0)
{
SLPDLogMessageInternals(msg);
}
else
{
SLPDLog("Message parsing failed\n");
SLPDLog("Peer: \n");
SLPDLog(" IP address: %s\n", SLPNetSockAddrStorageToString(&(msg->peer), addr_str, sizeof(addr_str)));
}
SLPMessageFree(msg);
}
}
}
}
/*=========================================================================*/
int SLPDProcessMessage(SLPDPeerInfo* peerinfo,
SLPBuffer recvbuf,
SLPBuffer sendbuf)
/* Processes the recvbuf and places the results in sendbuf */
/* */
/* recvfd - the socket the message was received on */
/* */
/* recvbuf - message to process */
/* */
/* sendbuf - results of the processed message */
/* */
/* Returns - zero on success SLP_ERROR_PARSE_ERROR or */
/* SLP_ERROR_INTERNAL_ERROR on ENOMEM. */
/*=========================================================================*/
{
SLPMessage message = 0;
int result = 0;
message = SLPMessageAlloc();
if(message == 0)
{
return SLP_ERROR_INTERNAL_ERROR;
}
result = SLPMessageParseBuffer(recvbuf, message);
if(result == 0)
{
switch(message->header.functionid)
{
case SLP_FUNCT_SRVRQST:
ProcessSrvRqst(peerinfo,message,sendbuf);
break;
case SLP_FUNCT_SRVREG:
ProcessSrvReg(peerinfo,message,sendbuf);
break;
case SLP_FUNCT_SRVDEREG:
ProcessSrvDeReg(peerinfo,message,sendbuf);
break;
case SLP_FUNCT_SRVACK:
ProcessSrvAck(peerinfo,message,sendbuf);
break;
case SLP_FUNCT_ATTRRQST:
ProcessAttrRqst(peerinfo,message,sendbuf);
break;
case SLP_FUNCT_DAADVERT:
ProcessDAAdvert(peerinfo,message,sendbuf);
break;
case SLP_FUNCT_SRVTYPERQST:
ProcessSrvTypeRqst(peerinfo,message,sendbuf);
break;
case SLP_FUNCT_SAADVERT:
ProcessSAAdvert(peerinfo,message,sendbuf);
break;
default:
/* this will NEVER happen */
break;
}
/* Log traceMsg of message was received and the one that will be sent */
if(G_SlpdProperty.traceMsg)
{
SLPDLogTraceMsg(peerinfo,recvbuf,sendbuf);
}
}
else
{
/* TODO: Log here? */
}
SLPMessageFree(message);
return result;
}
/*-------------------------------------------------------------------------*/
SLPBoolean ProcessSrvRplyCallback(SLPError errorcode,
struct sockaddr_in* peerinfo,
SLPBuffer replybuf,
void* cookie)
/*-------------------------------------------------------------------------*/
{
int i;
SLPUrlEntry* urlentry;
SLPMessage replymsg;
PSLPHandleInfo handle = (PSLPHandleInfo) cookie;
SLPBoolean result = SLP_TRUE;
#ifdef ENABLE_SLPv2_SECURITY
int securityenabled;
securityenabled = SLPPropertyAsBoolean(SLPGetProperty("net.slp.securityEnabled"));
#endif
/*-------------------------------------------*/
/* Check the errorcode and bail if it is set */
/*-------------------------------------------*/
if(errorcode != SLP_OK)
{
return ColateSLPSrvURLCallback((SLPHandle)handle,
0,
0,
errorcode,
handle->params.findsrvs.cookie);
}
/*--------------------*/
/* Parse the replybuf */
/*--------------------*/
replymsg = SLPMessageAlloc();
if(replymsg)
{
if(SLPMessageParseBuffer(peerinfo,replybuf,replymsg) == 0)
{
if(replymsg->header.functionid == SLP_FUNCT_SRVRPLY &&
replymsg->body.srvrply.errorcode == 0)
{
urlentry = replymsg->body.srvrply.urlarray;
for(i=0;i<replymsg->body.srvrply.urlcount;i++)
{
#ifdef ENABLE_SLPv2_SECURITY
/*-------------------------------*/
/* Validate the authblocks */
/*-------------------------------*/
if(securityenabled &&
SLPAuthVerifyUrl(handle->hspi,
1,
&(urlentry[i])))
{
/* authentication failed skip this URLEntry */
continue;
}
#endif
/*--------------------------------*/
/* Send the URL to the API caller */
/*--------------------------------*/
/* TRICKY: null terminate the url by setting the authcount to 0 */
((char*)(urlentry[i].url))[urlentry[i].urllen] = 0;
result = ColateSLPSrvURLCallback((SLPHandle)handle,
urlentry[i].url,
(unsigned short)urlentry[i].lifetime,
SLP_OK,
handle->params.findsrvs.cookie);
if(result == SLP_FALSE)
{
break;
}
}
}
else if(replymsg->header.functionid == SLP_FUNCT_DAADVERT &&
replymsg->body.daadvert.errorcode == 0)
{
#ifdef ENABLE_SLPv2_SECURITY
if(securityenabled &&
SLPAuthVerifyDAAdvert(handle->hspi,
1,
&(replymsg->body.daadvert)))
{
/* Verification failed. Ignore message */
SLPMessageFree(replymsg);
return SLP_TRUE;
}
#endif
((char*)(replymsg->body.daadvert.url))[replymsg->body.daadvert.urllen] = 0;
result = ColateSLPSrvURLCallback((SLPHandle)handle,
replymsg->body.daadvert.url,
SLP_LIFETIME_MAXIMUM,
SLP_OK,
handle->params.findsrvs.cookie);
}
else if(replymsg->header.functionid == SLP_FUNCT_SAADVERT)
{
#ifdef ENABLE_SLPv2_SECURITY
if(securityenabled &&
SLPAuthVerifySAAdvert(handle->hspi,
1,
&(replymsg->body.saadvert)))
{
/* Verification failed. Ignore message */
SLPMessageFree(replymsg);
return SLP_TRUE;
}
#endif
((char*)(replymsg->body.saadvert.url))[replymsg->body.saadvert.urllen] = 0;
result = ColateSLPSrvURLCallback((SLPHandle)handle,
replymsg->body.saadvert.url,
SLP_LIFETIME_MAXIMUM,
SLP_OK,
handle->params.findsrvs.cookie);
}
}
SLPMessageFree(replymsg);
}
return result;
}
/** SLPFindSrvs callback routine for NetworkRqstRply.
*
* @param[in] errorcode - The network operation error code.
* @param[in] peeraddr - The network address of the responder.
* @param[in] replybuf - The response buffer from the network request.
* @param[in] cookie - Callback context data from ProcessSrvReg.
*
* @return SLP_FALSE (to stop any iterative callbacks).
*
* @internal
*/
static SLPBoolean ProcessSrvRplyCallback(SLPError errorcode,
void * peeraddr, SLPBuffer replybuf, void * cookie)
{
SLPMessage * replymsg;
SLPBoolean result = SLP_TRUE;
SLPHandleInfo * handle = (SLPHandleInfo *)cookie;
#ifdef ENABLE_SLPv2_SECURITY
SLPBoolean securityEnabled = SLPPropertyAsBoolean("net.slp.securityEnabled");
#endif
/* Check the errorcode and bail if it is set. */
if (errorcode != SLP_OK)
return CollateToSLPSrvURLCallback(handle, 0, 0, errorcode);
/* parse the replybuf */
replymsg = SLPMessageAlloc();
if (replymsg)
{
if (!SLPMessageParseBuffer(peeraddr, 0, replybuf, replymsg))
{
if (replymsg->header.functionid == SLP_FUNCT_SRVRPLY
&& replymsg->body.srvrply.errorcode == 0)
{
int i;
SLPUrlEntry * urlentry = replymsg->body.srvrply.urlarray;
for (i = 0; i < replymsg->body.srvrply.urlcount; i++)
{
#ifdef ENABLE_SLPv2_SECURITY
/* Validate the service authblocks. */
if (securityEnabled
&& SLPAuthVerifyUrl(handle->hspi, 1, &urlentry[i]))
continue; /* Authentication failed, skip this URLEntry. */
#endif
result = CollateToSLPSrvURLCallback(handle, urlentry[i].url,
(unsigned short)urlentry[i].lifetime, SLP_OK);
if (result == SLP_FALSE)
break;
}
}
else if (replymsg->header.functionid == SLP_FUNCT_DAADVERT
&& replymsg->body.daadvert.errorcode == 0)
{
#ifdef ENABLE_SLPv2_SECURITY
if (securityEnabled && SLPAuthVerifyDAAdvert(handle->hspi,
1, &replymsg->body.daadvert))
{
/* Verification failed. Ignore message. */
SLPMessageFree(replymsg);
return SLP_TRUE;
}
#endif
result = CollateToSLPSrvURLCallback(handle,
replymsg->body.daadvert.url, SLP_LIFETIME_MAXIMUM,
SLP_OK);
}
else if (replymsg->header.functionid == SLP_FUNCT_SAADVERT)
{
#ifdef ENABLE_SLPv2_SECURITY
if (securityEnabled && SLPAuthVerifySAAdvert(handle->hspi, 1,
&replymsg->body.saadvert))
{
/* Verification failed. Ignore message. */
SLPMessageFree(replymsg);
return SLP_TRUE;
}
#endif
result = CollateToSLPSrvURLCallback(handle,
replymsg->body.saadvert.url, SLP_LIFETIME_MAXIMUM,
SLP_OK);
}
}
SLPMessageFree(replymsg);
}
return result;
}
/** Processes the recvbuf and places the results in sendbuf
*
* @param[in] peerinfo - The remote address the message was received from.
* @param[in] localaddr - The local address the message was received on.
* @param[in] recvbuf - The message to process.
* @param[out] sendbuf - The address of storage for the results of the
* processed message.
* @param[out] sendlist - if non-0, this function will prune the message
* with the processed xid from the sendlist.
*
* @return Zero on success if @p sendbuf contains a response to send,
* or a non-zero value if @p sendbuf does not contain a response
* to send.
*/
int SLPDProcessMessage(struct sockaddr_storage * peerinfo,
struct sockaddr_storage * localaddr, SLPBuffer recvbuf,
SLPBuffer * sendbuf, SLPList * psendlist)
{
SLPHeader header;
SLPMessage * message = 0;
int errorcode = 0;
#ifdef DEBUG
char addr_str[INET6_ADDRSTRLEN];
#endif
SLPDLogMessage(SLPDLOG_TRACEMSG_IN, peerinfo, localaddr, recvbuf);
/* set the sendbuf empty */
if (*sendbuf)
(*sendbuf)->end = (*sendbuf)->start;
/* zero out the header before parsing it */
memset(&header, 0, sizeof(header));
/* Parse just the message header */
recvbuf->curpos = recvbuf->start;
errorcode = SLPMessageParseHeader(recvbuf, &header);
/* Reset the buffer "curpos" pointer so that full message can be
parsed later
*/
recvbuf->curpos = recvbuf->start;
#if defined(ENABLE_SLPv1)
/* if version == 1 and the header was correct then parse message as a version 1 message */
if ((errorcode == 0) && (header.version == 1))
errorcode = SLPDv1ProcessMessage(peerinfo, recvbuf, sendbuf);
else
#endif
if (errorcode == 0)
{
/* TRICKY: Duplicate SRVREG recvbufs *before* parsing them
* we do this because we are going to keep track of in the
* registration database.
*/
if (header.functionid == SLP_FUNCT_SRVREG
|| header.functionid == SLP_FUNCT_DAADVERT)
{
recvbuf = SLPBufferDup(recvbuf);
if (recvbuf == 0)
return SLP_ERROR_INTERNAL_ERROR;
}
/* Allocate the message descriptor */
message = SLPMessageAlloc();
if (message)
{
/* Parse the message and fill out the message descriptor */
errorcode = SLPMessageParseBuffer(peerinfo, localaddr,
recvbuf, message);
if (errorcode == 0)
{
/* Process messages based on type */
switch (message->header.functionid)
{
case SLP_FUNCT_SRVRQST:
errorcode = ProcessSrvRqst(message, sendbuf, errorcode);
break;
case SLP_FUNCT_SRVREG:
errorcode = ProcessSrvReg(message, recvbuf,
sendbuf, errorcode);
if (errorcode == 0)
SLPDKnownDAEcho(message, recvbuf);
break;
case SLP_FUNCT_SRVDEREG:
errorcode = ProcessSrvDeReg(message, sendbuf, errorcode);
if (errorcode == 0)
SLPDKnownDAEcho(message, recvbuf);
break;
case SLP_FUNCT_SRVACK:
errorcode = ProcessSrvAck(message, sendbuf, errorcode);
break;
case SLP_FUNCT_ATTRRQST:
errorcode = ProcessAttrRqst(message, sendbuf, errorcode);
break;
case SLP_FUNCT_DAADVERT:
errorcode = ProcessDAAdvert(message, recvbuf,
sendbuf, errorcode);
break;
case SLP_FUNCT_SRVTYPERQST:
errorcode = ProcessSrvTypeRqst(message, sendbuf, errorcode);
break;
case SLP_FUNCT_SAADVERT:
errorcode = ProcessSAAdvert(message, sendbuf, errorcode);
break;
default:
/* Should never happen... but we're paranoid */
errorcode = SLP_ERROR_PARSE_ERROR;
break;
}
}
else
SLPDLogParseWarning(peerinfo, recvbuf);
/*If there was a send list, prune the xid, since the request has been processed*/
if(psendlist)
{
SLPHeader bufhead;
SLPBuffer pnext;
SLPBuffer pbuf = (SLPBuffer) psendlist->head;
while(pbuf)
{
pnext = (SLPBuffer) pbuf->listitem.next;
if((0 == SLPMessageParseHeader(pbuf, &bufhead)) && (bufhead.xid == header.xid))
SLPBufferFree((SLPBuffer)SLPListUnlink(psendlist, (SLPListItem*)pbuf));
else
pbuf->curpos = pbuf->start; /*We parsed the buffer enough to attempt the xid check, we need to reset it for the next parse*/
pbuf = pnext;
}
}
if (header.functionid == SLP_FUNCT_SRVREG
|| header.functionid == SLP_FUNCT_DAADVERT)
{
/* TRICKY: If this is a reg or daadvert message we do not free
* the message descriptor or duplicated recvbuf because they are
* being kept in the database!
*/
if (errorcode == 0)
goto FINISHED;
/* TRICKY: If there is an error we need to free the
* duplicated recvbuf
*/
SLPBufferFree(recvbuf);
}
SLPMessageFree(message);
}
else
errorcode = SLP_ERROR_INTERNAL_ERROR; /* out of memory */
}
else
SLPDLogParseWarning(peerinfo,recvbuf);
FINISHED:
#ifdef DEBUG
if (errorcode)
SLPDLog("\n*** DEBUG *** errorcode %i during processing "
"of message from %s\n", errorcode, SLPNetSockAddrStorageToString(
peerinfo, addr_str, sizeof(addr_str)));
#endif
/* Log message silently ignored because of an error */
if (errorcode)
if (*sendbuf == 0 || (*sendbuf)->end == (*sendbuf)->start)
SLPDLogMessage(SLPDLOG_TRACEDROP,peerinfo,localaddr,recvbuf);
/* Log trace message */
SLPDLogMessage(SLPDLOG_TRACEMSG_OUT, peerinfo, localaddr, *sendbuf);
return errorcode;
}
/*-------------------------------------------------------------------------*/
SLPBoolean KnownDADiscoveryCallback(SLPError errorcode,
struct sockaddr_in* peerinfo,
SLPBuffer rplybuf,
void* cookie)
/*-------------------------------------------------------------------------*/
{
SLPMessage replymsg;
SLPBuffer dupbuf;
struct hostent* he;
SLPSrvURL* srvurl;
int* count;
SLPBoolean result = SLP_TRUE;
count = (int*)cookie;
if(errorcode == 0)
{
dupbuf = SLPBufferDup(rplybuf);
if(dupbuf)
{
replymsg = SLPMessageAlloc();
if(replymsg)
{
if(SLPMessageParseBuffer(peerinfo,dupbuf,replymsg) == 0 &&
replymsg->header.functionid == SLP_FUNCT_DAADVERT)
{
if(replymsg->body.daadvert.errorcode == 0)
{
/* TRICKY: NULL terminate the DA url */
((char*)(replymsg->body.daadvert.url))[replymsg->body.daadvert.urllen] = 0;
if(SLPParseSrvURL(replymsg->body.daadvert.url, &srvurl) == 0)
{
he = gethostbyname(srvurl->s_pcHost);
SLPFree(srvurl);
if(he)
{
/* Reset the peer to the one in the URL */
replymsg->peer.sin_addr.s_addr = *((unsigned int*)(he->h_addr_list[0]));
(*count) += 1;
KnownDAAdd(replymsg,dupbuf);
if(replymsg->header.flags & SLP_FLAG_MCAST)
{
return SLP_FALSE;
}
return SLP_TRUE;
}
}
}
else if(replymsg->body.daadvert.errorcode == SLP_ERROR_INTERNAL_ERROR)
{
/* SLP_ERROR_INTERNAL_ERROR is a "end of stream" */
/* marker for looppack IPC */
result = SLP_FALSE;
}
}
SLPMessageFree(replymsg);
}
SLPBufferFree(dupbuf);
}
}
return result;
}
/*=========================================================================*/
int SLPDProcessMessage(struct sockaddr_in* peerinfo,
SLPBuffer recvbuf,
SLPBuffer* sendbuf)
/* Processes the recvbuf and places the results in sendbuf */
/* */
/* recvfd - the socket the message was received on */
/* */
/* recvbuf - message to process */
/* */
/* sendbuf - results of the processed message */
/* */
/* Returns - zero on success SLP_ERROR_PARSE_ERROR or */
/* SLP_ERROR_INTERNAL_ERROR on ENOMEM. */
/*=========================================================================*/
{
SLPMessage message = 0;
int errorcode = 0;
message = SLPMessageAlloc();
if(message == 0)
{
return SLP_ERROR_INTERNAL_ERROR;
}
errorcode = SLPMessageParseBuffer(recvbuf, message);
#if defined(ENABLE_SLPv1)
if(message->header.version == 1)
return SLPDv1ProcessMessage(peerinfo, recvbuf, sendbuf,
message, errorcode);
#endif
/* Log trace message */
SLPDLogTraceMsg("IN",peerinfo,recvbuf);
switch(message->header.functionid)
{
case SLP_FUNCT_SRVRQST:
errorcode = ProcessSrvRqst(peerinfo, message, sendbuf, errorcode);
break;
case SLP_FUNCT_SRVREG:
errorcode = ProcessSrvReg(peerinfo, message,sendbuf, errorcode);
if(errorcode == 0)
{
SLPDKnownDAEcho(peerinfo, message, recvbuf);
}
break;
case SLP_FUNCT_SRVDEREG:
errorcode = ProcessSrvDeReg(peerinfo, message,sendbuf, errorcode);
if(errorcode == 0)
{
SLPDKnownDAEcho(peerinfo, message, recvbuf);
}
break;
case SLP_FUNCT_SRVACK:
errorcode = ProcessSrvAck(peerinfo, message,sendbuf, errorcode);
break;
case SLP_FUNCT_ATTRRQST:
errorcode = ProcessAttrRqst(peerinfo, message,sendbuf, errorcode);
break;
case SLP_FUNCT_DAADVERT:
errorcode = ProcessDAAdvert(peerinfo, message, sendbuf, errorcode);
/* If necessary log that we received a DAAdvert */
SLPDLogDATrafficMsg("IN", peerinfo, message);
break;
case SLP_FUNCT_SRVTYPERQST:
errorcode = ProcessSrvTypeRqst(peerinfo, message, sendbuf, errorcode);
break;
case SLP_FUNCT_SAADVERT:
errorcode = ProcessSAAdvert(peerinfo, message, sendbuf, errorcode);
break;
default:
/* This may happen on a really early parse error or version not */
/* supported error */
/* TODO log errorcode here */
break;
}
/* Log traceMsg of message was received and the one that will be sent */
SLPDLogTraceMsg("OUT",peerinfo,*sendbuf);
SLPMessageFree(message);
/* Log reception of important errors */
switch(errorcode)
{
case SLP_ERROR_DA_BUSY_NOW:
SLPLog("DA_BUSY from %s\n",
inet_ntoa(peerinfo->sin_addr));
break;
case SLP_ERROR_INTERNAL_ERROR:
SLPLog("INTERNAL_ERROR from %s\n",
inet_ntoa(peerinfo->sin_addr));
break;
case SLP_ERROR_PARSE_ERROR:
SLPLog("PARSE_ERROR from %s\n",
inet_ntoa(peerinfo->sin_addr));
break;
case SLP_ERROR_VER_NOT_SUPPORTED:
SLPLog("VER_NOT_SUPPORTED from %s\n",
inet_ntoa(peerinfo->sin_addr));
break;
}
return errorcode;
}
/*-------------------------------------------------------------------------*/
SLPBoolean ProcessAttrRplyCallback(SLPError errorcode,
struct sockaddr_in* peerinfo,
SLPBuffer replybuf,
void* cookie)
/*-------------------------------------------------------------------------*/
{
SLPMessage replymsg;
SLPAttrRply* attrrply;
PSLPHandleInfo handle = (PSLPHandleInfo) cookie;
SLPBoolean result = SLP_TRUE;
#ifdef ENABLE_SLPv2_SECURITY
int securityenabled;
securityenabled = SLPPropertyAsBoolean(SLPGetProperty("net.slp.securityEnabled"));
#endif
/*-------------------------------------------*/
/* Check the errorcode and bail if it is set */
/*-------------------------------------------*/
if(errorcode)
{
handle->params.findattrs.callback((SLPHandle)handle,
0,
errorcode,
handle->params.findattrs.cookie);
return SLP_FALSE;
}
/*--------------------*/
/* Parse the replybuf */
/*--------------------*/
replymsg = SLPMessageAlloc();
if(replymsg)
{
if(SLPMessageParseBuffer(peerinfo,replybuf,replymsg) == 0 &&
replymsg->header.functionid == SLP_FUNCT_ATTRRPLY &&
replymsg->body.attrrply.errorcode == 0)
{
attrrply = &(replymsg->body.attrrply);
if(attrrply->attrlistlen)
{
#ifdef ENABLE_SLPv2_SECURITY
/*-------------------------------*/
/* Validate the authblocks */
/*-------------------------------*/
if(SLPPropertyAsBoolean(SLPGetProperty("net.slp.securityEnabled")) &&
SLPAuthVerifyString(handle->hspi,
1,
attrrply->attrlistlen,
attrrply->attrlist,
attrrply->authcount,
attrrply->autharray))
{
/* Could not verify the attr auth block */
SLPMessageFree(replymsg);
return result;
}
#endif
/*---------------------------------------*/
/* Send the attribute list to the caller */
/*---------------------------------------*/
/* TRICKY: null terminate the attrlist by setting the authcount to 0 */
((char*)(attrrply->attrlist))[attrrply->attrlistlen] = 0;
/* Call the callback function */
result = handle->params.findattrs.callback((SLPHandle)handle,
attrrply->attrlist,
attrrply->errorcode * -1,
handle->params.findattrs.cookie);
}
}
SLPMessageFree(replymsg);
}
return result;
}
/*=========================================================================*/
int SLPDv1ProcessMessage(struct sockaddr_in* peeraddr,
SLPBuffer recvbuf,
SLPBuffer* sendbuf)
/* Processes the SLPv1 message and places the results in sendbuf */
/* */
/* peeraddr - the socket the message was received on */
/* */
/* recvbuf - message to process */
/* */
/* sendbuf - results of the processed message */
/* */
/* Returns - zero on success SLP_ERROR_PARSE_ERROR or */
/* SLP_ERROR_INTERNAL_ERROR on ENOMEM. */
/*=========================================================================*/
{
SLPHeader header;
SLPMessage message;
int errorcode = 0;
if (!G_SlpdProperty.isDA)
{
/* SLPv1 messages are handled only by DAs */
errorcode = SLP_ERROR_VER_NOT_SUPPORTED;
}
/* Parse just the message header the reset the buffer "curpos" pointer */
recvbuf->curpos = recvbuf->start;
errorcode = SLPv1MessageParseHeader(recvbuf, &header);
/* TRICKY: Duplicate SRVREG recvbufs *before* parsing them */
/* it because we are going to keep them in the */
if (header.functionid == SLP_FUNCT_SRVREG)
{
recvbuf = SLPBufferDup(recvbuf);
if (recvbuf == NULL)
{
return SLP_ERROR_INTERNAL_ERROR;
}
}
/* Allocate the message descriptor */
message = SLPMessageAlloc();
if (message)
{
/* Parse the message and fill out the message descriptor */
errorcode = SLPv1MessageParseBuffer(peeraddr,recvbuf, message);
if (errorcode == 0)
{
/* Process messages based on type */
switch (message->header.functionid)
{
case SLP_FUNCT_SRVRQST:
errorcode = v1ProcessSrvRqst(peeraddr, message, sendbuf, errorcode);
break;
case SLP_FUNCT_SRVREG:
errorcode = v1ProcessSrvReg(peeraddr,
message,
recvbuf,
sendbuf,
errorcode);
if (errorcode == 0)
{
SLPDKnownDAEcho(message, recvbuf);
}
break;
case SLP_FUNCT_SRVDEREG:
errorcode = v1ProcessSrvDeReg(peeraddr, message, sendbuf, errorcode);
if (errorcode == 0)
{
SLPDKnownDAEcho(message, recvbuf);
}
break;
case SLP_FUNCT_ATTRRQST:
errorcode = v1ProcessAttrRqst(peeraddr, message, sendbuf, errorcode);
break;
case SLP_FUNCT_SRVTYPERQST:
errorcode = v1ProcessSrvTypeRqst(peeraddr, message, sendbuf, errorcode);
break;
case SLP_FUNCT_DAADVERT:
/* we are a SLPv2 DA, ignore other v1 DAs */
(*sendbuf)->end = (*sendbuf)->start;
break;
default:
/* Should never happen... but we're paranoid */
errorcode = SLP_ERROR_PARSE_ERROR;
break;
}
}
if (header.functionid == SLP_FUNCT_SRVREG)
{
/* TRICKY: Do not free the message descriptor for SRVREGs */
/* because we are keeping them in the database */
/* unless there is an error then we free memory */
if (errorcode)
{
SLPMessageFree(message);
SLPBufferFree(recvbuf);
}
}
else
{
SLPMessageFree(message);
}
}
else
{
/* out of memory */
errorcode = SLP_ERROR_INTERNAL_ERROR;
}
return errorcode;
}
/*=========================================================================*/
SLPError NetworkRqstRply(int sock,
struct sockaddr_in* destaddr,
const char* langtag,
char* buf,
char buftype,
int bufsize,
NetworkRqstRplyCallback callback,
void * cookie)
/* Transmits and receives SLP messages via multicast convergence algorithm */
/* */
/* Returns - SLP_OK on success */
/*=========================================================================*/
{
struct timeval timeout;
struct sockaddr_in peeraddr;
SLPBuffer sendbuf = 0;
SLPBuffer recvbuf = 0;
SLPMessage msg = 0;
SLPError result = 0;
#ifdef WIN32 /* on WIN32 setsockopt takes a const char * argument */
char socktype = 0;
#else
int socktype = 0;
#endif
int langtaglen = 0;
int prlistlen = 0;
char* prlist = 0;
int xid = 0;
int mtu = 0;
int size = 0;
int xmitcount = 0;
int rplycount = 0;
int maxwait = 0;
int totaltimeout = 0;
int timeouts[MAX_RETRANSMITS];
/*----------------------------------------------------*/
/* Save off a few things we don't want to recalculate */
/*----------------------------------------------------*/
langtaglen = strlen(langtag);
xid = SLPXidGenerate();
mtu = SLPPropertyAsInteger(SLPGetProperty("net.slp.MTU"));
sendbuf = SLPBufferAlloc(mtu);
if(sendbuf == 0)
{
result = SLP_MEMORY_ALLOC_FAILED;
goto CLEANUP;
}
if(buftype == SLP_FUNCT_DASRVRQST)
{
/* do something special for SRVRQST that will be discovering DAs */
maxwait = SLPPropertyAsInteger(SLPGetProperty("net.slp.DADiscoveryMaximumWait"));
SLPPropertyAsIntegerVector(SLPGetProperty("net.slp.DADiscovertTimeouts"),
timeouts,
MAX_RETRANSMITS );
/* SLP_FUNCT_DASRVRQST is a fake function. We really want to */
/* send a SRVRQST */
buftype = SLP_FUNCT_SRVRQST;
}
/* Figure unicast/multicast,TCP/UDP, wait and time out stuff */
if(ntohl(destaddr->sin_addr.s_addr) > 0xe0000000)
{
/* Multicast or broadcast */
maxwait = SLPPropertyAsInteger(SLPGetProperty("net.slp.multicastMaximumWait"));
SLPPropertyAsIntegerVector(SLPGetProperty("net.slp.multicastTimeouts"),
timeouts,
MAX_RETRANSMITS );
socktype = SOCK_DGRAM;
xmitcount = 0;
}
else
{
maxwait = SLPPropertyAsInteger(SLPGetProperty("net.slp.unicastMaximumWait"));
SLPPropertyAsIntegerVector(SLPGetProperty("net.slp.unicastTimeouts"),
timeouts,
MAX_RETRANSMITS );
size = sizeof(socktype);
getsockopt(sock,SOL_SOCKET,SO_TYPE,&socktype,&size);
socktype = SOCK_STREAM;
xmitcount = MAX_RETRANSMITS;
}
/*--------------------------------*/
/* Allocate memory for the prlist */
/*--------------------------------*/
prlist = (char*)malloc(mtu);
if(prlist == 0)
{
result = SLP_MEMORY_ALLOC_FAILED;
goto CLEANUP;
}
*prlist = 0;
prlistlen = 0;
/*--------------------------*/
/* Main retransmission loop */
/*--------------------------*/
while(xmitcount <= MAX_RETRANSMITS)
{
xmitcount++;
/*--------------------*/
/* setup recv timeout */
/*--------------------*/
if(socktype == SOCK_DGRAM)
{
totaltimeout += timeouts[xmitcount];
if(totaltimeout >= maxwait || timeouts[xmitcount] == 0)
{
/* we are all done */
break;
}
timeout.tv_sec = timeouts[xmitcount] / 1000;
timeout.tv_usec = (timeouts[xmitcount] % 1000) * 1000;
}
else
{
timeout.tv_sec = maxwait / 1000;
timeout.tv_usec = (maxwait % 1000) * 1000;
}
size = 14 + langtaglen + 2 + prlistlen + bufsize;
if(SLPBufferRealloc(sendbuf,size) == 0)
{
result = SLP_MEMORY_ALLOC_FAILED;
goto CLEANUP;
}
/*-----------------------------------*/
/* Add the header to the send buffer */
/*-----------------------------------*/
/*version*/
*(sendbuf->start) = 2;
/*function id*/
*(sendbuf->start + 1) = buftype;
/*length*/
ToUINT24(sendbuf->start + 2, size);
/*flags*/
ToUINT16(sendbuf->start + 5, socktype == SOCK_STREAM ? 0 : SLP_FLAG_MCAST);
/*ext offset*/
ToUINT24(sendbuf->start + 7,0);
/*xid*/
ToUINT16(sendbuf->start + 10,xid);
/*lang tag len*/
ToUINT16(sendbuf->start + 12,langtaglen);
/*lang tag*/
memcpy(sendbuf->start + 14, langtag, langtaglen);
sendbuf->curpos = sendbuf->start + langtaglen + 14 ;
/*-----------------------------------*/
/* Add the prlist to the send buffer */
/*-----------------------------------*/
if( buftype == SLP_FUNCT_SRVRQST ||
buftype == SLP_FUNCT_ATTRRQST ||
buftype == SLP_FUNCT_SRVTYPERQST)
{
ToUINT16(sendbuf->curpos,prlistlen);
sendbuf->curpos = sendbuf->curpos + 2;
memcpy(sendbuf->curpos, prlist, prlistlen);
sendbuf->curpos = sendbuf->curpos + prlistlen;
}
/*-----------------------------*/
/* Add the rest of the message */
/*-----------------------------*/
memcpy(sendbuf->curpos, buf, bufsize);
/*----------------------*/
/* send the send buffer */
/*----------------------*/
result = SLPNetworkSendMessage(sock,
sendbuf,
destaddr,
&timeout);
if(result != 0)
{
/* we could not send the message for some reason */
/* we're done */
result = SLP_NETWORK_ERROR;
goto FINISHED;
}
/*----------------*/
/* Main recv loop */
/*----------------*/
while(1)
{
if(SLPNetworkRecvMessage(sock,
&recvbuf,
&peeraddr,
&timeout) != 0)
{
/* An error occured while receiving the message */
/* probably a just time out error. Retry send. */
break;
}
/* Parse the message and call callback */
msg = SLPMessageRealloc(msg);
if(msg == 0)
{
result = SLP_MEMORY_ALLOC_FAILED;
goto FINISHED;
}
if(SLPMessageParseBuffer(recvbuf, msg) == 0)
{
if (msg->header.xid == xid)
{
rplycount = rplycount + 1;
if(callback(result, msg, cookie) == 0)
{
goto CLEANUP;
}
}
}
if(socktype == SOCK_STREAM)
{
goto FINISHED;
}
/* add the peer to the previous responder list */
if(prlistlen != 0)
{
strcat(prlist,",");
}
strcat(prlist,inet_ntoa(peeraddr.sin_addr));
prlistlen = strlen(prlist);
}
}
FINISHED:
/*----------------*/
/* We're all done */
/*----------------*/
if(rplycount == 0)
{
result = SLP_NETWORK_TIMED_OUT;
}
/*-------------------------------------*/
/* Notify the callback that we're done */
/*-------------------------------------*/
callback(SLP_LAST_CALL,msg,cookie);
/*----------------*/
/* Free resources */
/*----------------*/
CLEANUP:
if(prlist) free(prlist);
SLPBufferFree(sendbuf);
SLPBufferFree(recvbuf);
SLPMessageFree(msg);
close(sock);
return result;
}
