/** Formats and sends an SLPFindSrvs wire buffer request.
*
* @param handle - The OpenSLP session handle, containing request
* parameters. See docs for SLPFindSrvs.
*
* @return Zero on success, or an SLP API error code.
*
* @internal
*/
static SLPError ProcessSrvRqst(SLPHandleInfo * handle)
{
uint8_t * buf;
uint8_t * curpos;
SLPError serr;
size_t spistrlen = 0;
char * spistr = 0;
struct sockaddr_storage peeraddr;
struct sockaddr_in* destaddrs = 0;
sockfd_t sock = SLP_INVALID_SOCKET;
/* Is this a special attempt to locate DAs? */
if (strncasecmp(handle->params.findsrvs.srvtype, SLP_DA_SERVICE_TYPE,
handle->params.findsrvs.srvtypelen) == 0)
{
KnownDAProcessSrvRqst(handle);
return 0;
}
#ifdef ENABLE_SLPv2_SECURITY
if (SLPPropertyAsBoolean("net.slp.securityEnabled"))
SLPSpiGetDefaultSPI(handle->hspi, SLPSPI_KEY_TYPE_PUBLIC,
&spistrlen, &spistr);
#endif
/* 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| length of <service-type> | <service-type> String \
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| length of <scope-list> | <scope-list> String \
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| length of predicate string | Service Request <predicate> \
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| length of <SLP SPI> string | <SLP SPI> String \
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */
buf = curpos = xmalloc(
+ 2 + handle->params.findsrvs.srvtypelen
+ 2 + handle->params.findsrvs.scopelistlen
+ 2 + handle->params.findsrvs.predicatelen
+ 2 + spistrlen);
if (buf == 0)
{
xfree(spistr);
return SLP_MEMORY_ALLOC_FAILED;
}
/* <service-type> */
PutL16String(&curpos, handle->params.findsrvs.srvtype,
handle->params.findsrvs.srvtypelen);
/* <scope-list> */
PutL16String(&curpos, handle->params.findsrvs.scopelist,
handle->params.findsrvs.scopelistlen);
/* predicate string */
PutL16String(&curpos, handle->params.findsrvs.predicate,
handle->params.findsrvs.predicatelen);
/* <SLP SPI> */
PutL16String(&curpos, (char *)spistr, spistrlen);
/* Call the RqstRply engine. */
do
{
#ifndef UNICAST_NOT_SUPPORTED
if (handle->dounicast == 1)
{
serr = NetworkUcastRqstRply(handle, buf, SLP_FUNCT_SRVRQST,
curpos - buf, ProcessSrvRplyCallback, handle, false);
break;
}
if (SLPNetIsIPV4())
{
if (KnownDASpanningListFromCache(handle,
(int)handle->params.findsrvs.scopelistlen,
handle->params.findsrvs.scopelist,
&destaddrs) > 0)
{
serr = NetworkMultiUcastRqstRply(destaddrs,
handle->langtag,
(char*)buf,
SLP_FUNCT_SRVRQST,
curpos - buf,
ProcessSrvRplyCallback,
handle, false);
xfree(destaddrs);
break;
}
}
#endif
if (strncasecmp(handle->params.findsrvs.srvtype, SLP_SA_SERVICE_TYPE,
handle->params.findsrvs.srvtypelen) != 0)
sock = NetworkConnectToDA(handle, handle->params.findsrvs.scopelist,
handle->params.findsrvs.scopelistlen, &peeraddr);
if (sock == SLP_INVALID_SOCKET)
{
/* Use multicast as a last resort. */
serr = NetworkMcastRqstRply(handle, buf, SLP_FUNCT_SRVRQST,
curpos - buf, ProcessSrvRplyCallback, 0, false);
break;
}
serr = NetworkRqstRply(sock, &peeraddr, handle->langtag, 0, buf,
SLP_FUNCT_SRVRQST, curpos - buf, ProcessSrvRplyCallback,
handle, false);
if (serr)
NetworkDisconnectDA(handle);
} while (serr == SLP_NETWORK_ERROR);
xfree(buf);
xfree(spistr);
return serr;
}
/*-------------------------------------------------------------------------*/
SLPError ProcessSrvRqst(PSLPHandleInfo handle)
/*-------------------------------------------------------------------------*/
{
struct sockaddr_in peeraddr;
int sock = -1;
int bufsize = 0;
char* buf = 0;
char* curpos = 0;
SLPError result = 0;
#ifdef ENABLE_SLPv2_SECURITY
int spistrlen = 0;
char* spistr = 0;
#endif
/*------------------------------------------*/
/* Is this a special attempt to locate DAs? */
/*------------------------------------------*/
if(strncasecmp(handle->params.findsrvs.srvtype,
SLP_DA_SERVICE_TYPE,
handle->params.findsrvs.srvtypelen) == 0)
{
KnownDAProcessSrvRqst(handle);
goto FINISHED;
}
#ifdef ENABLE_SLPv2_SECURITY
if(SLPPropertyAsBoolean(SLPGetProperty("net.slp.securityEnabled")))
{
SLPSpiGetDefaultSPI(handle->hspi,
SLPSPI_KEY_TYPE_PUBLIC,
&spistrlen,
&spistr);
}
#endif
/*-------------------------------------------------------------------*/
/* determine the size of the fixed portion of the SRVRQST */
/*-------------------------------------------------------------------*/
bufsize = handle->params.findsrvs.srvtypelen + 2; /* 2 bytes for len field */
bufsize += handle->params.findsrvs.scopelistlen + 2; /* 2 bytes for len field */
bufsize += handle->params.findsrvs.predicatelen + 2; /* 2 bytes for len field */
bufsize += 2; /* 2 bytes for spistr len*/
#ifdef ENABLE_SLPv2_SECURITY
bufsize += spistrlen;
#endif
buf = curpos = (char*)xmalloc(bufsize);
if(buf == 0)
{
result = SLP_MEMORY_ALLOC_FAILED;
goto FINISHED;
}
/*------------------------------------------------------------*/
/* Build a buffer containing the fixed portion of the SRVRQST */
/*------------------------------------------------------------*/
/* service type */
ToUINT16(curpos,handle->params.findsrvs.srvtypelen);
curpos = curpos + 2;
memcpy(curpos,
handle->params.findsrvs.srvtype,
handle->params.findsrvs.srvtypelen);
curpos = curpos + handle->params.findsrvs.srvtypelen;
/* scope list */
ToUINT16(curpos,handle->params.findsrvs.scopelistlen);
curpos = curpos + 2;
memcpy(curpos,
handle->params.findsrvs.scopelist,
handle->params.findsrvs.scopelistlen);
curpos = curpos + handle->params.findsrvs.scopelistlen;
/* predicate */
ToUINT16(curpos,handle->params.findsrvs.predicatelen);
curpos = curpos + 2;
memcpy(curpos,
handle->params.findsrvs.predicate,
handle->params.findsrvs.predicatelen);
curpos = curpos + handle->params.findsrvs.predicatelen;
#ifdef ENABLE_SLPv2_SECURITY
ToUINT16(curpos,spistrlen);
curpos = curpos + 2;
memcpy(curpos,spistr,spistrlen);
curpos = curpos + spistrlen;
#else
ToUINT16(curpos,0);
#endif
/*--------------------------*/
/* Call the RqstRply engine */
/*--------------------------*/
do
{
#ifndef UNICAST_NOT_SUPPORTED
if ( handle->dounicast == 1 )
{
void *cookie = (PSLPHandleInfo) handle;
result = NetworkUcastRqstRply(handle,
buf,
SLP_FUNCT_SRVRQST,
bufsize,
ProcessSrvRplyCallback,
cookie);
break;
}
else
#endif
if(strncasecmp(handle->params.findsrvs.srvtype,
SLP_SA_SERVICE_TYPE,
handle->params.findsrvs.srvtypelen))
{
sock = NetworkConnectToDA(handle,
handle->params.findsrvs.scopelist,
handle->params.findsrvs.scopelistlen,
&peeraddr);
}
if(sock == -1)
{
/* use multicast as a last resort */
#ifndef MI_NOT_SUPPORTED
result = NetworkMcastRqstRply(handle,
buf,
SLP_FUNCT_SRVRQST,
bufsize,
ProcessSrvRplyCallback,
NULL);
#else
result = NetworkMcastRqstRply(handle->langtag,
buf,
SLP_FUNCT_SRVRQST,
bufsize,
ProcessSrvRplyCallback,
handle);
#endif /* MI_NOT_SUPPORTED */
break;
}
result = NetworkRqstRply(sock,
&peeraddr,
handle->langtag,
0,
buf,
SLP_FUNCT_SRVRQST,
bufsize,
ProcessSrvRplyCallback,
handle);
if(result)
{
NetworkDisconnectDA(handle);
}
}while(result == SLP_NETWORK_ERROR);
FINISHED:
if(buf) xfree(buf);
#ifdef ENABLE_SLPv2_SECURITY
if(spistr) xfree(spistr);
#endif
return result;
}
/** Formats and sends an SLPFindSrvTypes wire buffer request.
*
* @param handle - The OpenSLP session handle, containing request
* parameters. See docs for SLPFindSrvTypes.
*
* @return Zero on success, or an SLP API error code.
*
* @internal
*/
static SLPError ProcessSrvTypeRqst(SLPHandleInfo * handle)
{
sockfd_t sock;
uint8_t * buf;
uint8_t * curpos;
SLPError serr = SLP_OK;
struct sockaddr_storage peeraddr;
/* 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| length of Naming Authority | <Naming Authority String> \
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| length of <scope-list> | <scope-list> String \
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */
/** @todo Ensure that we don't exceed the MTU. */
buf = curpos = xmalloc(
+ 2 + handle->params.findsrvtypes.namingauthlen
+ 2 + handle->params.findsrvtypes.scopelistlen);
if (buf == 0)
return SLP_MEMORY_ALLOC_FAILED;
/* Naming Authority */
if (strcmp(handle->params.findsrvtypes.namingauth, "*") == 0)
PutUINT16(&curpos, 0xffff); /* 0xffff is wildcard */
else
PutL16String(&curpos, handle->params.findsrvtypes.namingauth,
handle->params.findsrvtypes.namingauthlen);
/* <scope-list> */
PutL16String(&curpos, handle->params.findsrvtypes.scopelist,
handle->params.findsrvtypes.scopelistlen);
/* Send request, receive reply. */
do
{
#ifndef UNICAST_NOT_SUPPORTED
if (handle->dounicast == 1)
{
serr = NetworkUcastRqstRply(handle, buf, SLP_FUNCT_SRVTYPERQST,
curpos - buf, ProcessSrvTypeRplyCallback, handle);
break;
}
#endif
sock = NetworkConnectToDA(handle,
handle->params.findsrvtypes.scopelist,
handle->params.findsrvtypes.scopelistlen,
&peeraddr);
if (sock == SLP_INVALID_SOCKET)
{
serr = NetworkMcastRqstRply(handle, buf, SLP_FUNCT_SRVTYPERQST,
curpos - buf, ProcessSrvTypeRplyCallback, 0);
break;
}
serr = NetworkRqstRply(sock, &peeraddr, handle->langtag, 0, buf,
SLP_FUNCT_SRVTYPERQST, curpos - buf, ProcessSrvTypeRplyCallback,
handle);
if (serr)
NetworkDisconnectDA(handle);
} while (serr == SLP_NETWORK_ERROR);
xfree(buf);
return serr;
}