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455 lines
19 KiB
455 lines
19 KiB
4 years ago
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/***************************************************************************/
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/* */
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/* Project: OpenSLP - OpenSource implementation of Service Location */
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/* Protocol Version 2 */
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/* */
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/* File: slplib_findattrs.c */
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/* */
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/* Abstract: Implementation for SLPFindAttrs() call. */
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/* */
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/*-------------------------------------------------------------------------*/
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/* */
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/* Please submit patches to http://www.openslp.org */
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/* */
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/*-------------------------------------------------------------------------*/
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/* */
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/* Copyright (C) 2000 Caldera Systems, Inc */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or without */
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/* modification, are permitted provided that the following conditions are */
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/* met: */
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/* */
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/* Redistributions of source code must retain the above copyright */
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/* notice, this list of conditions and the following disclaimer. */
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/* */
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/* Redistributions in binary form must reproduce the above copyright */
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/* notice, this list of conditions and the following disclaimer in */
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/* the documentation and/or other materials provided with the */
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/* distribution. */
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/* */
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/* Neither the name of Caldera Systems nor the names of its */
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/* contributors may be used to endorse or promote products derived */
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/* from this software without specific prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
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/* `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
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/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */
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/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE CALDERA */
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/* SYSTEMS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
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/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
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/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
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/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
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/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
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/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */
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/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/***************************************************************************/
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#include "slp.h"
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#include "libslp.h"
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/* TODO: do we need to add anything for collation here? */
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/*-------------------------------------------------------------------------*/
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SLPBoolean ProcessAttrRplyCallback(SLPError errorcode,
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struct sockaddr_in* peerinfo,
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SLPBuffer replybuf,
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void* cookie)
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/*-------------------------------------------------------------------------*/
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{
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SLPMessage replymsg;
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SLPAttrRply* attrrply;
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PSLPHandleInfo handle = (PSLPHandleInfo) cookie;
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SLPBoolean result = SLP_TRUE;
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#ifdef ENABLE_SLPv2_SECURITY
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int securityenabled;
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securityenabled = SLPPropertyAsBoolean(SLPGetProperty("net.slp.securityEnabled"));
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#endif
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/*-------------------------------------------*/
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/* Check the errorcode and bail if it is set */
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/*-------------------------------------------*/
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if(errorcode)
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{
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handle->params.findattrs.callback((SLPHandle)handle,
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0,
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errorcode,
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handle->params.findattrs.cookie);
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return SLP_FALSE;
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}
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/*--------------------*/
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/* Parse the replybuf */
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/*--------------------*/
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replymsg = SLPMessageAlloc();
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if(replymsg)
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{
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if(SLPMessageParseBuffer(peerinfo,replybuf,replymsg) == 0 &&
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replymsg->header.functionid == SLP_FUNCT_ATTRRPLY &&
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replymsg->body.attrrply.errorcode == 0)
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{
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attrrply = &(replymsg->body.attrrply);
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if(attrrply->attrlistlen)
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{
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#ifdef ENABLE_SLPv2_SECURITY
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/*-------------------------------*/
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/* Validate the authblocks */
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/*-------------------------------*/
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if(SLPPropertyAsBoolean(SLPGetProperty("net.slp.securityEnabled")) &&
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SLPAuthVerifyString(handle->hspi,
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1,
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attrrply->attrlistlen,
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attrrply->attrlist,
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attrrply->authcount,
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attrrply->autharray))
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{
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/* Could not verify the attr auth block */
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SLPMessageFree(replymsg);
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return result;
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}
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#endif
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/*---------------------------------------*/
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/* Send the attribute list to the caller */
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/*---------------------------------------*/
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/* TRICKY: null terminate the attrlist by setting the authcount to 0 */
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((char*)(attrrply->attrlist))[attrrply->attrlistlen] = 0;
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/* Call the callback function */
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result = handle->params.findattrs.callback((SLPHandle)handle,
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attrrply->attrlist,
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attrrply->errorcode * -1,
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handle->params.findattrs.cookie);
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}
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}
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SLPMessageFree(replymsg);
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}
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return result;
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}
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/*-------------------------------------------------------------------------*/
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SLPError ProcessAttrRqst(PSLPHandleInfo handle)
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/*-------------------------------------------------------------------------*/
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{
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int sock;
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struct sockaddr_in peeraddr;
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int bufsize = 0;
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char* buf = 0;
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char* curpos = 0;
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SLPError result = 0;
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#ifdef ENABLE_SLPv2_SECURITY
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int spistrlen = 0;
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char* spistr = 0;
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if(SLPPropertyAsBoolean(SLPGetProperty("net.slp.securityEnabled")))
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{
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SLPSpiGetDefaultSPI(handle->hspi,
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SLPSPI_KEY_TYPE_PUBLIC,
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&spistrlen,
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&spistr);
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}
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#endif
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/*-------------------------------------------------------------------*/
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/* determine the size of the fixed portion of the ATTRRQST */
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/*-------------------------------------------------------------------*/
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bufsize = handle->params.findattrs.urllen + 2; /* 2 bytes for len field */
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bufsize += handle->params.findattrs.scopelistlen + 2; /* 2 bytes for len field */
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bufsize += handle->params.findattrs.taglistlen + 2; /* 2 bytes for len field */
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bufsize += 2; /* 2 bytes for spistr len*/
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#ifdef ENABLE_SLPv2_SECURITY
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bufsize += spistrlen;
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#endif
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buf = curpos = (char*)xmalloc(bufsize);
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if(buf == 0)
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{
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result = SLP_MEMORY_ALLOC_FAILED;
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goto FINISHED;
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}
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/*------------------------------------------------------------*/
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/* Build a buffer containing the fixed portion of the ATTRRQST*/
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/*------------------------------------------------------------*/
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/* url */
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ToUINT16(curpos,handle->params.findattrs.urllen);
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curpos = curpos + 2;
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memcpy(curpos,
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handle->params.findattrs.url,
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handle->params.findattrs.urllen);
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curpos = curpos + handle->params.findattrs.urllen;
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/* scope list */
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ToUINT16(curpos,handle->params.findattrs.scopelistlen);
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curpos = curpos + 2;
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memcpy(curpos,
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handle->params.findattrs.scopelist,
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handle->params.findattrs.scopelistlen);
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curpos = curpos + handle->params.findattrs.scopelistlen;
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/* taglist */
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ToUINT16(curpos,handle->params.findattrs.taglistlen);
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curpos = curpos + 2;
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memcpy(curpos,
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handle->params.findattrs.taglist,
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handle->params.findattrs.taglistlen);
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curpos = curpos + handle->params.findattrs.taglistlen;
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#ifdef ENABLE_SLPv2_SECURITY
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ToUINT16(curpos,spistrlen);
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curpos = curpos + 2;
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memcpy(curpos,spistr,spistrlen);
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curpos = curpos + spistrlen;
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#else
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ToUINT16(curpos,0);
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#endif
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/*--------------------------*/
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/* Call the RqstRply engine */
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/*--------------------------*/
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do
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{
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#ifndef UNICAST_NOT_SUPPORTED
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if ( handle->dounicast == 1 )
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{
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void *cookie = (PSLPHandleInfo) handle;
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result = NetworkUcastRqstRply(handle,
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buf,
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SLP_FUNCT_ATTRRQST,
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bufsize,
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ProcessAttrRplyCallback,
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cookie);
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break;
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}
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else
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#endif
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sock = NetworkConnectToDA(handle,
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handle->params.findattrs.scopelist,
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handle->params.findattrs.scopelistlen,
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&peeraddr);
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if(sock == -1)
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{
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/* use multicast as a last resort */
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#ifndef MI_NOT_SUPPORTED
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result = NetworkMcastRqstRply(handle,
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buf,
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SLP_FUNCT_ATTRRQST,
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bufsize,
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ProcessAttrRplyCallback,
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NULL);
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#else
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result = NetworkMcastRqstRply(handle->langtag,
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buf,
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SLP_FUNCT_ATTRRQST,
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bufsize,
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ProcessAttrRplyCallback,
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handle);
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#endif /* MI_NOT_SUPPORTED */
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break;
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}
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result = NetworkRqstRply(sock,
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&peeraddr,
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handle->langtag,
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0,
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buf,
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SLP_FUNCT_ATTRRQST,
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bufsize,
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ProcessAttrRplyCallback,
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handle);
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if(result)
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{
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NetworkDisconnectDA(handle);
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}
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}while(result == SLP_NETWORK_ERROR);
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FINISHED:
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if(buf) xfree(buf);
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#ifdef ENABLE_SLPv2_SECURITY
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if(spistr) xfree(spistr);
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#endif
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return result;
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}
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#ifdef ENABLE_ASYNC_API
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/*-------------------------------------------------------------------------*/
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SLPError AsyncProcessAttrRqst(PSLPHandleInfo handle)
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/*-------------------------------------------------------------------------*/
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{
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SLPError result = ProcessAttrRqst(handle);
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xfree((void*)handle->params.findattrs.url);
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xfree((void*)handle->params.findattrs.scopelist);
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xfree((void*)handle->params.findattrs.taglist);
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handle->inUse = SLP_FALSE;
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return result;
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}
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#endif
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/*=========================================================================*/
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SLPError SLPAPI SLPFindAttrs(SLPHandle hSLP,
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const char *pcURLOrServiceType,
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const char *pcScopeList,
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const char *pcAttrIds,
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SLPAttrCallback callback,
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void *pvCookie)
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/* */
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/* This function returns service attributes matching the attribute ids */
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/* for the indicated service URL or service type. If pcURLOrServiceType */
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/* is a service URL, the attribute information returned is for that */
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/* particular advertisement in the language locale of the SLPHandle. */
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/* */
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/* If pcURLOrServiceType is a service type name (including naming */
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/* authority if any), then the attributes for all advertisements of that */
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/* service type are returned regardless of the language of registration. */
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/* Results are returned through the callback. */
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/* */
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/* The result is filtered with an SLP attribute request filter string */
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/* parameter, the syntax of which is described in RFC 2608. If the filter */
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/* string is the empty string, i.e. "", all attributes are returned. */
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/* */
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/* hSLP The language specific SLPHandle on which to search */
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/* for attributes. */
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/* */
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/* pcURLOrServiceType The service URL or service type. See RFC 2608 for */
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/* URL and service type syntax. May not be the empty */
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/* string. */
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/* */
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/* pcScopeList A pointer to a char containing a comma separated */
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/* list of scope names. Pass in NULL or the empty */
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/* string "" to find services in all the scopes the */
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/* local host is configured query. */
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/* */
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/* pcAttrIds A comma separated list of attribute ids to return. */
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/* Use NULL or the empty string, "", to indicate all */
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/* values. Wildcards are not currently supported */
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/* */
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/* callback A callback function through which the results of */
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/* the operation are reported. */
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/* */
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/* pvCookie Memory passed to the callback code from the client.*/
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/* May be NULL. */
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/* */
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/* Returns: If an error occurs in starting the operation, one */
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||
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/* of the SLPError codes is returned. */
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/*=========================================================================*/
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||
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{
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||
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PSLPHandleInfo handle;
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SLPError result;
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||
|
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|
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/*------------------------------*/
|
||
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/* check for invalid parameters */
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||
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/*------------------------------*/
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||
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if(hSLP == 0 ||
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*(unsigned int*)hSLP != SLP_HANDLE_SIG ||
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pcURLOrServiceType == 0 ||
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*pcURLOrServiceType == 0 ||
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callback == 0)
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{
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return SLP_PARAMETER_BAD;
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}
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/*-----------------------------------------*/
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/* cast the SLPHandle into a SLPHandleInfo */
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||
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/*-----------------------------------------*/
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||
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handle = (PSLPHandleInfo)hSLP;
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||
|
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|
||
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/*-----------------------------------------*/
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||
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/* Check to see if the handle is in use */
|
||
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/*-----------------------------------------*/
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||
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if(handle->inUse == SLP_TRUE)
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||
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{
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return SLP_HANDLE_IN_USE;
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||
|
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}
|
||
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handle->inUse = SLP_TRUE;
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||
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|
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|
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/*-------------------------------------------*/
|
||
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/* Set the handle up to reference parameters */
|
||
|
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/*-------------------------------------------*/
|
||
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handle->params.findattrs.urllen = strlen(pcURLOrServiceType);
|
||
|
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handle->params.findattrs.url = pcURLOrServiceType;
|
||
|
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if(pcScopeList && *pcScopeList)
|
||
|
|
{
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||
|
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handle->params.findattrs.scopelistlen = strlen(pcScopeList);
|
||
|
|
handle->params.findattrs.scopelist = pcScopeList;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
handle->params.findattrs.scopelist = SLPGetProperty("net.slp.useScopes");
|
||
|
|
handle->params.findattrs.scopelistlen = strlen(handle->params.findattrs.scopelist);
|
||
|
|
}
|
||
|
|
if(pcAttrIds && *pcAttrIds)
|
||
|
|
{
|
||
|
|
handle->params.findattrs.taglistlen = strlen(pcAttrIds);
|
||
|
|
handle->params.findattrs.taglist = pcAttrIds;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
handle->params.findattrs.taglistlen = 0;
|
||
|
|
handle->params.findattrs.taglist = (char*)&handle->params.findattrs.taglistlen;
|
||
|
|
}
|
||
|
|
handle->params.findattrs.callback = callback;
|
||
|
|
handle->params.findattrs.cookie = pvCookie;
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------*/
|
||
|
|
/* Check to see if we should be async or sync */
|
||
|
|
/*----------------------------------------------*/
|
||
|
|
#ifdef ENABLE_ASYNC_API
|
||
|
|
if(handle->isAsync)
|
||
|
|
{
|
||
|
|
/* COPY all the referenced parameters */
|
||
|
|
handle->params.findattrs.url = xstrdup(handle->params.findattrs.url);
|
||
|
|
handle->params.findattrs.scopelist = xstrdup(handle->params.findattrs.scopelist);
|
||
|
|
handle->params.findattrs.taglist = xstrdup(handle->params.findattrs.taglist);
|
||
|
|
|
||
|
|
/* make sure strdups did not fail */
|
||
|
|
if(handle->params.findattrs.url &&
|
||
|
|
handle->params.findattrs.scopelist &&
|
||
|
|
handle->params.findattrs.taglist)
|
||
|
|
{
|
||
|
|
result = ThreadCreate((ThreadStartProc)AsyncProcessAttrRqst,handle);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
result = SLP_MEMORY_ALLOC_FAILED;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(result)
|
||
|
|
{
|
||
|
|
if(handle->params.findattrs.url) xfree((void*)handle->params.findattrs.url);
|
||
|
|
if(handle->params.findattrs.scopelist) xfree((void*)handle->params.findattrs.scopelist);
|
||
|
|
if(handle->params.findattrs.taglist) xfree((void*)handle->params.findattrs.taglist);
|
||
|
|
handle->inUse = SLP_FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif /* ifdef ENABLE_ASYNC_API */
|
||
|
|
{
|
||
|
|
/* Leave all parameters REFERENCED */
|
||
|
|
|
||
|
|
result = ProcessAttrRqst(handle);
|
||
|
|
|
||
|
|
handle->inUse = SLP_FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|