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/***************************************************************************/
/* */
/* Project: OpenSLP - OpenSource implementation of Service Location */
/* Protocol */
/* */
/* File: slp_parse.c */
/* */
/* Abstract: Common string parsing functionality */
/* */
/*-------------------------------------------------------------------------*/
/* */
/* Please submit patches to http://www.openslp.org */
/* */
/*-------------------------------------------------------------------------*/
/* */
/* Copyright (C) 2000 Caldera Systems, Inc */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following conditions are */
/* met: */
/* */
/* Redistributions of source code must retain the above copyright */
/* notice, this list of conditions and the following disclaimer. */
/* */
/* Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in */
/* the documentation and/or other materials provided with the */
/* distribution. */
/* */
/* Neither the name of Caldera Systems nor the names of its */
/* contributors may be used to endorse or promote products derived */
/* from this software without specific prior written permission. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
/* `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */
/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE CALDERA */
/* SYSTEMS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */
/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/* */
/***************************************************************************/
#include "slp_parse.h"
#include "slp_xmalloc.h"
#include <errno.h>
/*=========================================================================*/
int SLPParseSrvUrl(int srvurllen,
const char* srvurl,
SLPParsedSrvUrl** parsedurl)
/*
* Description:
* Parses a service URL into its parts
*
* Parameters:
* srvurllen (IN) size of srvurl in bytes
* srvurl (IN) pointer to service URL to parse
* parsedurl (OUT) pointer to SLPParsedSrvUrl pointer that will be
* set to xmalloc()ed parsed url parts. Returned
* pointer must be freed by caller with call to xfree()
*
* Returns: zero on success, errno on failure..
*=========================================================================*/
{
char* empty; /* always points to an empty string */
char* buf; /* points to location in the SLPSrvUrl buffer */
char* slider1; /* points to parse locations in srvurl */
char* slider2; /* points to parse locations srvurl */
char* end; /* points at the end of srvurl */
/* Allocate memory and set up sliders */
*parsedurl = (SLPParsedSrvUrl*)xmalloc(srvurllen + sizeof(SLPParsedSrvUrl) + 5);
/* +5 ensures space for 5 null terminations */
if(*parsedurl == 0)
{
return ENOMEM;
}
memset(*parsedurl,0,srvurllen + sizeof(SLPParsedSrvUrl) + 5);
buf = ((char*)*parsedurl) + sizeof(SLPParsedSrvUrl);
slider1 = slider2 = (char*)srvurl;
end = slider1 + srvurllen;
/* Set empty */
empty = buf;
buf++;
/* parse out the service type */
slider2 = (char*)strstr(slider2,":/");
if(slider2 == 0)
{
xfree(*parsedurl);
*parsedurl = 0;
return EINVAL;
}
memcpy(buf,slider1,slider2-slider1);
(*parsedurl)->srvtype = buf;
buf += (slider2 - slider1) + 1;
/* parse out the host */
slider2 = slider1 = slider2 + 3; /* + 3 skips the "://" */
while(slider2 < end && *slider2 != '/' && *slider2 != ':') slider2++;
if(slider2-slider1 < 1)
{
/* no host part (this is okay according to RFC2609) */
(*parsedurl)->host = empty;
}
else
{
memcpy(buf,slider1,slider2-slider1);
(*parsedurl)->host = buf;
buf += (slider2 - slider1) + 1;
}
/* parse out the port */
if(*slider2 == ':')
{
slider2 ++; /* + 1 skips the ":" */
slider1 = slider2; /* set up slider1 at the start of the port str */
while(*slider2 && (*slider2 != '/' && *slider2 != ';')) slider2++;
if (slider2 - slider1 < 1)
{
/* FIXME: no port, default to 80? */
(*parsedurl)->port = 80;
}
else
{
memcpy(buf,slider1,slider2-slider1);
(*parsedurl)->port = atoi(buf);
buf += (slider2-slider1) + 1;
}
}
/* parse out the remainder of the url */
if(slider2 < end)
{
slider1 = slider2;
memcpy(buf,slider1,end-slider1);
(*parsedurl)->remainder = buf;
buf += (end - slider2) + 1;
}
else
{
/* no remainder portion */
(*parsedurl)->remainder = empty;
}
/* set the net family to always be an empty string for IP */
(*parsedurl)->family = empty;
return 0;
}
/*===========================================================================
* TESTING CODE enabled by removing #define comment and compiling with the
* following command line:
*
* $ gcc -g -DSLP_PARSE_TEST -DDEBUG slp_parse.c slp_xmalloc.c slp_linkedlist.c
*==========================================================================*/
#ifdef SLP_PARSE_TEST
#define TESTSRVTYPE1 "service:printer.x"
#define TESTHOST1 "192.168.100.2"
#define TESTPORT1 "4563"
#define TESTREMAINDER1 "/hello/good/world"
#define TESTURL1 TESTSRVTYPE1"://"TESTHOST1":"TESTPORT1 TESTREMAINDER1
#define TESTURL2 TESTSRVTYPE1"://"TESTHOST1":"TESTPORT1
#define TESTURL3 TESTSRVTYPE1"://"TESTHOST1
#define TESTURL4 "service:badurl"
int main(int argc, char* argv[])
{
SLPParsedSrvUrl* parsedurl;
printf("Testing srvurl: %s\n",TESTURL1);
if(SLPParseSrvUrl(strlen(TESTURL1),
TESTURL1,
&parsedurl) != 0)
{
printf("FAILURE: SLPParseSrvUrl returned error\n");
return -1;
}
if(strcmp(parsedurl->srvtype,TESTSRVTYPE1))
{
printf("FAILURE: wrong srvtype\n");
}
else if(strcmp(parsedurl->host,TESTHOST1))
{
printf("FAILURE: wrong host\n");
}
else if(parsedurl->port != atoi(TESTPORT1))
{
printf("FAILURE: wrong port\n");
}
else if(strcmp(parsedurl->remainder,TESTREMAINDER1))
{
printf("FAILURE: wrong remainder\n");
}
else if(*(parsedurl->family))
{
printf("FAILURE: wrong family\n");
}
else
{
printf("Success!\n");
}
if(parsedurl) xfree(parsedurl);
/* TESTURL2 */
printf("Testing srvurl: %s\n",TESTURL2);
if(SLPParseSrvUrl(strlen(TESTURL2),
TESTURL2,
&parsedurl) != 0)
{
printf("FAILURE: SLPParseSrvUrl returned error\n");
return -1;
}
if(strcmp(parsedurl->srvtype,TESTSRVTYPE1))
{
printf("FAILURE: wrong srvtype\n");
}
else if(strcmp(parsedurl->host,TESTHOST1))
{
printf("FAILURE: wrong host\n");
}
else if(parsedurl->port != atoi(TESTPORT1))
{
printf("FAILURE: wrong port\n");
}
/*
else if(strcmp(parsedurl->remainder,TESTREMAINDER1))
{
printf("FAILURE: wrong remainder\n");
}
*/
else if(*(parsedurl->family))
{
printf("FAILURE: wrong family\n");
}
else
{
printf("Success!\n");
}
if(parsedurl) xfree(parsedurl);
/* TESTURL3 */
printf("Testing srvurl: %s\n",TESTURL3);
if(SLPParseSrvUrl(strlen(TESTURL3),
TESTURL3,
&parsedurl) != 0)
{
printf("FAILURE: SLPParseSrvUrl returned error\n");
return -1;
}
if(strcmp(parsedurl->srvtype,TESTSRVTYPE1))
{
printf("FAILURE: wrong srvtype\n");
}
else if(strcmp(parsedurl->host,TESTHOST1))
{
printf("FAILURE: wrong host\n");
}
/*
else if(parsedurl->port != atoi(TESTPORT1))
{
printf("FAILURE: wrong port\n");
}
else if(strcmp(parsedurl->remainder,TESTREMAINDER1))
{
printf("FAILURE: wrong remainder\n");
}
*/
else if(*(parsedurl->family))
{
printf("FAILURE: wrong family\n");
}
else
{
printf("Success!\n");
}
if(parsedurl) xfree(parsedurl);
/* TESTURL4 */
printf("Testing srvurl: %s\n",TESTURL4);
if(SLPParseSrvUrl(strlen(TESTURL4),
TESTURL4,
&parsedurl) == 0)
{
printf("FAILURE: SLPParseSrvUrl should have returned an error\n");
}
else
{
printf("Success!\n");
}
if(parsedurl) xfree(parsedurl);
return 0;
}
#endif
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