Re: [Openslp-devel] openslp2 getifaddrs not available on Solaris

[Nick Wagner]

I never touched solaris, but a quick search shows it wasn't added until 11.
 I did run across this getifaddrs source on the oracle site -- I hope it
helps:

https://java.net/projects/solaris/sources/on-src/content/usr/src/lib/libsocket/inet/getifaddrs.c


On Fri, Oct 25, 2013 at 8:18 AM, Jim Marshall jim.marsh...@ws-inc.comwrote:

 We're attempting to use OpenSLP 2.0 on Solaris 10, but it appears that
 getifaddrs  freeifaddrs are not available which is causing the build
 for OpenSLP to fail

 slp_iface.c:951: warning: struct ifaddrs declared inside parameter list
 slp_iface.c:951: warning: its scope is only this definition or
 declaration, which is probably not what you want
 slp_iface.c: In function `ifname_to_addr':
 slp_iface.c:958: warning: implicit declaration of function `getifaddrs'
 slp_iface.c:960: error: dereferencing pointer to incomplete type
 slp_iface.c:962: error: dereferencing pointer to incomplete type
 slp_iface.c:964: error: dereferencing pointer to incomplete type
 slp_iface.c:966: error: dereferencing pointer to incomplete type
 slp_iface.c:977: error: dereferencing pointer to incomplete type
 slp_iface.c:981: warning: implicit declaration of function `freeifaddrs'


 Anyone run into this and have a fix?


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[Openslp-devel] iphone and android SA?

[Nick Wagner]

Every once in a while, I come across someone wanting to have SA
functionality on their iphone or android.  Usually we try to find a
solution to the application/protocol so UA functionality is all that is
needed, but it comes up enough that I thought it might be nice to discuss
solutions as a group.

As always, the issue is port 427 requiring root access.  It is configurable
in openslp, but moving this to a higher port number means everyone has to
know the new port and be configured to that port.

What if the application required that a DA is online?  It would appear that
SAs could find and register with the DA, even though they can't respond to
any multicast.

Any other ideas?


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Re: [Openslp-devel] What platforms are being tested?

[Nick Wagner]

I'll try to get some testing done tomorrow on OSX, but I can't guarantee
it.  On the other hand, I've checked in the change that allows it to build
again on OS X...

--Nick


On Wed, Dec 12, 2012 at 9:55 PM, Jim Marshall 
jim.marsh...@wbemsolutions.com wrote:

  Once I get some free time I will test the latest tree on CentOS 5.5,
 Solaris 10 (sparc and intel), Windows and possibly AIX 5.3. Hopefully this
 will be done by the end of this week.

 Jim

 Nick Wagner wrote:

 I've discovered that my OS X setup at work isn't currently going to work
 for testing openslp. Before I try to set something up at home, I thought
 I'd check if anyone else was testing Mac?  Is anyone hitting the Windows
 version?

  While it was great that the work Jim Marshall did spurred on this
 release, it would have been nice if this work was in place _before_ he did
 all of his testing. :)

  --Nick



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Re: [Openslp-devel] Considering adding SuSE extensions to OpenSLP 2.0

[Nick Wagner]

If it can be enabled at runtime or even compile time, I'd be ok with it.
 How would attributes fit into it, if at all?

--Nick


On Tue, Nov 13, 2012 at 11:55 AM, John Calcote john.calc...@gmail.comwrote:

 I’m currently adding the Suse patches (those that haven’t made it in
 previously) to the repository in preparation for the 2.0 release. I started
 applying the smaller ones first – mostly security review patches - and then
 realized it would probably be better to add them in the same order they’re
 specified in the suse rpm spec file to provide the best context for
 applying later patches in the list. (I would normally always apply them in
 order, but these patches were written for a different code base – 1.2 – so
 they have to be applied manually anyway.)

 ** **

 Patch number 3 (in the 23 patch set) is the Suse extension patch. They’ve
 added multicast dns functionality to openSLP.

 ** **

  http://en.wikipedia.org/wiki/Multicast_DNS

 ** **

 My first reaction to this (a few years ago) was to reject it, but I’m
 rethinking it now – it might be a nice 2.0 feature (and Suse’s been using
 it for years so it’s well tested).

 ** **

 Question: Is anyone out there opposed to OpenSLP gathering entries from,
 and pushing entries into, the mdns space? I don’t want to add this if it’s
 going to cause significant problems for SLP users. Also consider the
 possibility of making it both a compile-in option, and runtime-enabled via
 config options.

 ** **

 John


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Re: [Openslp-devel] 2.0 release imminent

[Nick Wagner]

Sorry, the tracker issue was for the SLP scope bug I'm looking at.  The
windows service dereg bug was the one Matthew brought up
http://sourceforge.net/tracker/?func=detailaid=3582209group_id=1730atid=101730

--Nick


On Tue, Nov 6, 2012 at 11:52 AM, John Calcote john.calc...@gmail.comwrote:

 Nick,

 ** **

 Are you sure you posted the correct reference? I don’t see anything in
 that tracker issue that’s related to a windows service dereg bug. Or did
 you mean to refer to this one an another one implied by a previous
 conversation?

 ** **

 Thanks,

 John

 ** **

 *From:* nwagner...@gmail.com [mailto:nwagner...@gmail.com] *On Behalf Of *Nick
 Wagner
 *Sent:* Tuesday, November 06, 2012 10:32 AM
 *To:* John Calcote
 *Cc:* OpenSLP Devel Mailing List

 *Subject:* Re: [Openslp-devel] 2.0 release imminent

 ** **

 How do people feel about
 http://sourceforge.net/tracker/?func=detailaid=1751139group_id=1730atid=101730?
  I can take some time to look at it today before the release.
  Unfortunately, I'm not in a location where I can easily look at the
 windows service deregister bug.

 ** **

 --Nick

 ** **

 ** **

 ** **

 On Tue, Nov 6, 2012 at 11:11 AM, John Calcote john.calc...@gmail.com
 wrote:

 I’m about to create a 2.0 release of openslp – any issues we need to cover
 yet? Speak now or forever hold your peace. :)

  

 John



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Re: [Openslp-devel] 2.0 release imminent

[Nick Wagner]

I've made the change for that bug. 1695


On Tue, Nov 6, 2012 at 12:57 PM, Me dajo...@gmail.com wrote:

 Thanks John.  Available at
 ftp://ftp.novell.com/outgoing/openslp-1.2.0-172.22.1.src.rpm with md5
 checksum: 494ed3b4f2453fbf2b47ab48707b1173

 This file includes the base openslp 1.2.0 used and then the patch files to
 be applied to it.  One of the files in there shows the order of the patch
 files to be applied and I think they include relevant bug numbers and
 descriptions.  I can get more details from the bugs if you'd like.

 I can also e-mail it, but wasn't sure if cluttering the list with files
 was appropriate.

 AB



 On Tue, Nov 6, 2012 at 10:51 AM, John Calcote john.calc...@gmail.comwrote:

 Aaron,

 ** **

 Please send me the patches again if you can find them. I’ll look them
 over and see which ones are still applicable (haven’t been fixed yet, and
 the patch location still exists in a form to which the patch can be
 applied).

 ** **

 --john

 ** **

 *From:* Me [mailto:dajo...@gmail.com]
 *Sent:* Tuesday, November 06, 2012 10:38 AM
 *To:* OpenSLP Devel Mailing List
 *Subject:* Re: [Openslp-devel] 2.0 release imminent

 ** **

 Once upon a time I posted the DIFFs from Novell for all of the openslp
 1.x changes.  I know 2.x has had a ton of things rewritten, but since
 Novell had found/fixed all of those bugs has anybody who understands C been
 able to glance through those changes to ensure the problems are not present
 in the 2.x code?  If the code is needed again I can probably get access to
 the patch files and post them for whomever; I just hate to have bugs
 lingering when somebody else has already gone through the work of analyzing
 and fixing them in a way that may work out in 2.x as well as 1.x.

 ** **

 On Tue, Nov 6, 2012 at 10:32 AM, Nick Wagner ne...@wingedbeast.org
 wrote:

 How do people feel about
 http://sourceforge.net/tracker/?func=detailaid=1751139group_id=1730atid=101730?
  I can take some time to look at it today before the release.
  Unfortunately, I'm not in a location where I can easily look at the
 windows service deregister bug.

 ** **

 --Nick

 ** **

 ** **

 ** **

 On Tue, Nov 6, 2012 at 11:11 AM, John Calcote john.calc...@gmail.com
 wrote:

 I’m about to create a 2.0 release of openslp – any issues we need to
 cover yet? Speak now or forever hold your peace. :)

  

 John

 ** **


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Re: [Openslp-devel] slptool hangs on AIX?

[Nick Wagner]

I've added Jim's AIX building patches, and I tweaked
openslp.misc/debian/init.d to have the  -- -p /var/run/$NAME.pid set
correctly. Version 1694.

Other than that, I think the only potentially outstanding thing is Gavin's
code to handle network changes.  Which I have not looked at, and will
probably require more testing.  Does the group want to look at them, or
move on with 2.0?  Or are there other patches/bugs we've missed?

--Nick


On Thu, Nov 1, 2012 at 2:49 PM, Jim Marshall jim.marsh...@wbemsolutions.com
 wrote:

  Are there any other changes that are being waited on? I've run our tests
 and they all work, so I would like to propose we roll out 2.0.

 Thanks

 John Calcote wrote:

  Fixed in revision 1693 – SLP atomics now return the correct (new) value
 on AIX.

 ** **

 John

 ** **

 *From:* John Calcote [mailto:john.calc...@gmail.comjohn.calc...@gmail.com]

 *Sent:* Tuesday, October 30, 2012 12:14 PM
 *To:* Jim Marshall
 *Cc:* openslp-devel@lists.sourceforge.net
 *Subject:* Re: [Openslp-devel] slptool hangs on AIX?

 ** **

 Hi Jim,

 On Tue, Oct 30, 2012 at 10:54 AM, Jim Marshall 
 jim.marsh...@wbemsolutions.com wrote:

 Hi,
  Been testing the AIX build I have and the agent is working fine but when
 I invoke slptool it basically hangs. Stepping into the code we get to
 libslp_handle.c line 66

 if (SLPAtomicInc(s_OpenSLPHandleCount) == 1)

 The SLPAtomicInc function does this on AIX:

 return (intptr_t)fetch_and_add((atomic_p)pn, 1);

 This is the cause of the hang, because fetch_and_add [...] returns the
 original value of the variable (from the man page), in this case '0'. When
 this happens the code enters a while loop

 ** **

 ** **

 Well, that's kind of useless, isn't it? It should be replaced with:

 ** **

return (intptr_t)fetch_and_add((atomic_p)pn, 1) + 1;

 ** **

 The idea here is to atomically increment the value stored at pn. If two
 threads try to do it at once, then they could both read the value,
 increment it and both write the same value back out. The use of atomic_add
 should cause both threads to actually increment the value, regardless of
 how in-sync they are on their attempts to update the value.

 ** **

 It's only a side-effect (that we take advantage of) that most atomic incs
 return the newly updated value. Since the AIX version returns the original
 value, and we're guaranteed to read/update/write atomically when we add 1
 to that original value, then we can assume that the value we get back PLUS
 ONE is our actual desired return value.

 ** **

 I'll fix it.

 ** **

 John



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[Openslp-devel] Has anyone built a debian package before?

[Nick Wagner]

I took a quick look at the Debian start-stop script, and it does need to
use the -p  option when running slpd.  But then I noticed that it was still
referring to /usr/sbin/slpd, when I believe we now install to
/usr/local/bin.  Do we need to make the start-stop script use the new
directory?  do we need to change the whole debian subdirectory in
openslp.misc?

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Re: [Openslp-devel] [Openslp-users] slpd seems to hijack the port I'm using in my application

[Nick Wagner]

Someone on the devel list with more experience working with linux daemons
will need to make this fix.  And they should patch the debian start-stop
script as well as earlier explained in this email chain.  We should do this
before the code freeze.

Robert, thanks for finding these issues!

--Nick

On Wed, Oct 17, 2012 at 10:30 AM, Robert Hegner rheg...@hsr.ch wrote:

 Ok I found out what's wrong. And I would consider this as a bug in OpenSLP.

 I'm a Linux newbie but The Linux Programming Interface by Michael
 Kerrisk (a great book, by the way) helped me understand what's going on.

 You can see in my first post that when slpd listens to the same port as
 my application, it also uses the same file descriptor.

 As I wrote earlier, I use system() to run the start/stop script of slpd.
 According to Kerrisk's book, system() is typically implemented using a
 combination of fork() (which copies all open file descriptors) and
 exec() (which does not close any file descriptors). So slpd inherits my
 open file descriptors when I start it from within my application.

 In chapter 37 of his book, Kerrisk also describes the seven steps for
 daemonizing a program. Step 6 is:
 Close all open file descriptors that the daemon has inherited from its
 parent. (A daemon may need to keep certain inherited file descriptors
 open, [...]

 And he also provides some example code showing how to accomplish this:

 maxfd = sysconf(_SC_OPEN_MAX);
 if (maxfd == -1)
 maxfd = BD_MAX_CLOSE; // 8192 in his example
 for (fd = 0; fd  maxfd; fd++)
 close(fd);

 I had a look at the OpenSLP source code and I found that Daemonize() (in
 slpd_main.c) does not close all open file descriptors (it only closes
 descriptors 0 to 2 under some condition).

 I tried to close all file descriptors in Daemonize() but it seemed to
 cause some problems. I guess that slpd has already opened some of its
 own sockets at that time, which are then being closed again.

 But adding

 for (i = 3; i  8192; i++)
 close(i);

 at the beginning of main() solves all my problems :)

 Something like this should be in Daemonize() and not at the beginning of
 main(), but I guess someone who is familiar with the initialization code
 of slpd should have a look at this.

 I hope this change will make it into Release of version 2.0

 Robert


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Re: [Openslp-devel] [PATCHv2] change MAX_SLP_IFACES to be a run-time configurable value

[Nick Wagner]

I have no objections to the MAX_SLP_IFACES patch.  If people are ok with
it, I can merge it.
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Re: [Openslp-devel] [PATCH] change MAX_SLP_IFACES to be a run-time configurable value

[Nick Wagner]

I'm back from vacation, now, so my responses can be a bit more timely. :)

I haven't attempted to run this code. But I did look over the code I had an
issue with earlier, and the key is that  SLPDDatabaseReg in slpd_database.c
uses a local variable named 'ifaces', and doesn't seem to properly
initialize that structure.  It will only show up when using IPv6.  When I
did the original code review, I grepped for all usages of the SLPIfaceInfo
class, and this was the only red flag I saw.  Sorry if I wasn't more
explicit earlier.

--Nick

On Thu, Sep 27, 2012 at 12:28 PM, David Stevens dlstev...@us.ibm.comwrote:

 nwagner...@gmail.com wrote on 09/27/2012 12:03:33 PM:

  I'm away from my devel machine right now, but from what I remember,
  you changed the slpifaces structure from having two static arrays of
  SLP_MAX_IFACES to two pointers.  It appeared to me at the time that
  SLPDDatabaseReg wasn't allocating memory for those pointers when
  initializing the slpifaces structure.

 This is done in SLPDIncomingInit() and in SLPDIncomingReinit(),
 which is called after SLPDPropertyInit() so they have the current
 config file value for slp_max_ifaces before they are allocated. And
 the old ones, if there, are freed in SLPDIncomingReinit() before
 allocating
 the new ones.
 Because the test programs don't use these, they have their own
 allocations in the main programs. (e.g., main() in slp_iface.c)
 Did you see a problem while running it, or was it something
 you were concerned about from code browsing? I could declare them as
 static,
 external or just explicitly initialize the pointers to NULL which would
 fault on any indirection before initialization, but I believe I've
 covered all the cases in the original.

 +-DLS



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Re: [Openslp-devel] [PATCH] change MAX_SLP_IFACES to be a run-time configurable value

[Nick Wagner]

I'm away from my devel machine right now, but from what I remember, you
changed the slpifaces structure from having two static arrays of
SLP_MAX_IFACES to two pointers.  It appeared to me at the time that
SLPDDatabaseReg wasn't allocating memory for those pointers when
initializing the slpifaces structure. I didn't see other errors, but I'm a
little careful when it comes to changing arrays to pointers -- a typical
way for errors to be introduced. Otherwise, the patch looked good.  My
apologies if I'm mis-remembering the issue, or if I wasn't reading the
patch correctly in the first place!

--Nick

On Wed, Sep 26, 2012 at 11:25 AM, David Stevens dlstev...@us.ibm.comwrote:

 nwagner...@gmail.com wrote on 09/19/2012 12:07:00 PM:

  It appears that SLPDDatabaseReg doesn't initialize slpifaces
  correctly. Please double-check all uses of SLPIfaceGetInfo and the
  SLPIfaceInfo structure.

 Nick,
 I looked at this and it appears to be working for me.
 I set a different value in the config file and I see the new
 value when I get to SLPDDatabaseReg; when I don't set it in the
 config file, I see the default of 100.
 Can you tell me what you tried that was broken?

 +-DLS



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Re: [Openslp-devel] slptool displays multiple attributes when only 1 should be

[Nick Wagner]

 Just out of curiosity, if the slp.conf is in your Windows or
 Windows/system directory, is there any difference?  I'm wondering if
 somehow the service isn't looking at the command line arguments.  But
 that's a bit of a long shot.


 On Thu, Sep 20, 2012 at 2:22 PM, Jim Marshall 
 jim.marsh...@wbemsolutions.com wrote:

  My account is setup as an administrator type. I was also using a
 command prompt which was run as administrator, however; I disabled UAC
 all together (well set it to 'never notify me') and see the same behavior.

 Jim
 Nick Wagner wrote:

 Do you have UserAccessControl turned on in windows 7?  We might be
 running into some service permissions thing.

  --Nick

 On Thu, Sep 20, 2012 at 1:15 PM, Jim Marshall 
 jim.marsh...@wbemsolutions.com wrote:

  Nick,
  When I start slpd as follows the directory agent does not show up with
 slptool

 slpd -start -c .\slp.conf -l slp_dafail.txt
 C:\Temp\openslp\win32\Win32\Debugslptool findsrvs
 service:directory-agent


 C:\Temp\openslp\win32\Win32\Debug

  however; if I add the '-d' option to the command line it works.  In
 other words when starting slpd as follows results in the directory agent
 showing up and then doing the attribute test works as expected.

 slpd -start -c .\slp.conf -d -l slp_daworked.txt
 C:\Temp\openslp\win32\Win32\Debugslptool findsrvs
 service:directory-agent
 service:directory-agent://127.0.0.1,65535
 service:directory-agent://192.168.5.101,65535



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Re: [Openslp-devel] slptool displays multiple attributes when only 1 should be

[Nick Wagner]

When you have it on, does slptool find directory agents appropriately?

--Nick

On Thu, Sep 20, 2012 at 9:54 AM, Jim Marshall 
jim.marsh...@wbemsolutions.com wrote:

 What specifically do you want in terms of routing table? Below is the IPv4
 table output from the 'route print' command.

 In terms of it being a SA or DA, I set net.slp.isDA = true in slp.conf.
 I stopped the SLP service and restarted it with the slp.conf and I see the
 same behavior.

 Jim

 IPv4 Route Table
 ==**==**
 ===
 Active Routes:
 Network DestinationNetmask  Gateway   Interface  Metric
   0.0.0.0  0.0.0.0  192.168.5.1192.168.5.101 10
 127.0.0.0255.0.0.0 On-link 127.0.0.1306
 127.0.0.1  255.255.255.255 On-link 127.0.0.1306
   127.255.255.255  255.255.255.255 On-link 127.0.0.1306
   169.254.0.0  255.255.0.0 On-link 169.254.37.23276
 169.254.37.23  255.255.255.255 On-link 169.254.37.23276
   169.254.255.255  255.255.255.255 On-link 169.254.37.23276
   192.168.5.0255.255.255.0 On-link 192.168.5.101266
 192.168.5.101  255.255.255.255 On-link 192.168.5.101266
 192.168.5.255  255.255.255.255 On-link 192.168.5.101266
  192.168.19.0255.255.255.0 On-link  192.168.19.1276
  192.168.19.1  255.255.255.255 On-link  192.168.19.1276
192.168.19.255  255.255.255.255 On-link  192.168.19.1276
 224.0.0.0240.0.0.0 On-link 127.0.0.1306
 224.0.0.0240.0.0.0 On-link 192.168.5.101266
 224.0.0.0240.0.0.0 On-link  192.168.19.1276
 224.0.0.0240.0.0.0 On-link 169.254.37.23276
   255.255.255.255  255.255.255.255 On-link 127.0.0.1306
   255.255.255.255  255.255.255.255 On-link 192.168.5.101266
   255.255.255.255  255.255.255.255 On-link  192.168.19.1276
   255.255.255.255  255.255.255.255 On-link 169.254.37.23276
 ==**==**
 ===
 Persistent Routes:
   None



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Re: [Openslp-devel] slptool displays multiple attributes when only 1 should be

[Nick Wagner]

Do you have UserAccessControl turned on in windows 7?  We might be running
into some service permissions thing.

--Nick

On Thu, Sep 20, 2012 at 1:15 PM, Jim Marshall 
jim.marsh...@wbemsolutions.com wrote:

  Nick,
  When I start slpd as follows the directory agent does not show up with
 slptool

 slpd -start -c .\slp.conf -l slp_dafail.txt
 C:\Temp\openslp\win32\Win32\Debugslptool findsrvs service:directory-agent


 C:\Temp\openslp\win32\Win32\Debug

 however; if I add the '-d' option to the command line it works.  In other
 words when starting slpd as follows results in the directory agent showing
 up and then doing the attribute test works as expected.

 slpd -start -c .\slp.conf -d -l slp_daworked.txt
 C:\Temp\openslp\win32\Win32\Debugslptool findsrvs service:directory-agent
 service:directory-agent://127.0.0.1,65535
 service:directory-agent://192.168.5.101,65535


 C:\Temp\openslp\win32\Win32\Debug
 Jim


 Nick Wagner wrote:

 When you have it on, does slptool find directory agents appropriately?

  --Nick

 On Thu, Sep 20, 2012 at 9:54 AM, Jim Marshall 
 jim.marsh...@wbemsolutions.com wrote:

 What specifically do you want in terms of routing table? Below is the
 IPv4 table output from the 'route print' command.

 In terms of it being a SA or DA, I set net.slp.isDA = true in slp.conf.
 I stopped the SLP service and restarted it with the slp.conf and I see the
 same behavior.

 Jim


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Re: [Openslp-devel] slptool displays multiple attributes when only 1 should be

[Nick Wagner]

Sorry to take so long with this.  I tried the trunk code on my machine (xp
with vs2010), and couldn't replicate the problem.  Do you have a DA
running?  Could this be dropping to multicast somehow?

--Nick

On Mon, Sep 17, 2012 at 10:49 AM, Jim Marshall 
jim.marsh...@wbemsolutions.com wrote:

  Hi,
  I am testing the trunk on Windows 7, code was built with Visual Studio 11
 (Beta of VS 2012). When doing a simple test to register a service and then
 get its attributes I am getting back multiple 'entries' when only 1 such
 entry exists. This appears to be an issue with the 2.0 slptool because if I
 use the older slptool 1.0.9.a on the same registration I only get a single
 attribute back.

 slptool example:

 C:\Temp\openslp\win32\Win32\Debugslptool -v
 slptool version = 2.0.0
 libslp version = 2.0.0
 libslp configuration file = (null)

 C:\Temp\openslp\win32\Win32\Debugslptool.exe register 
 service:myserv.x://myhost.com (attr1=val1),(attr2=val2)

 C:\Temp\openslp\win32\Win32\Debugslptool findsrvs service:myserv.x
 service:myserv.x://myhost.com,10785

 C:\Temp\openslp\win32\Win32\Debugslptool findattrs 
 service:myserv.x://myhost.com
 (attr1=val1),(attr2=val2)
 (attr1=val1),(attr2=val2)
 (attr1=val1),(attr2=val2)

 C:\Temp\openslp\win32\Win32\Debugslptool findattrs 
 service:myserv.x://myhost.com attr1
 (attr1=val1)
 (attr1=val1)
 (attr1=val1)



 Server Info:
 C:\Temp\openslp\win32\Win32\Debugslpd -v
 slpd version: 2.0.0
 compile options:
debugging:disabled
predicates:   enabled
slpv1 compatability:  enabled
slpv2 security:   disabled
 C:\Temp\linux64\openslp\win32\Win32\Debugslpd -stop

 C:\Temp\linux64\openslp\win32\Win32\Debugslpd -start

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Re: [Openslp-devel] [PATCH] change MAX_SLP_IFACES to be a run-time configurable value

[Nick Wagner]

It appears that SLPDDatabaseReg doesn't initialize slpifaces correctly.
Please double-check all uses of SLPIfaceGetInfo and the SLPIfaceInfo
structure.

Otherwise, I'm fine with this patch

--Nick

On Wed, Sep 12, 2012 at 10:49 AM, gowrishankar 
gowrishanka...@linux.vnet.ibm.com wrote:

 Hi David,

 On Wednesday 12 September 2012 07:39 PM, David Stevens wrote:
  Gowri,
   Thanks for the review.
 
  gowrishankargowrishanka...@linux.vnet.ibm.com  wrote on 09/11/2012
  10:21:32 PM:
 
  +#
  +# If operating as an SA or DA, this specifies the maximum number
  of interfaces
  +# that can be active. (Default is 100)
  MAX_IFACE_LEN is 20.
 
  My patch does not use or change MAX_IFACE_LEN. I don't
  understand this comment. Are you suggesting a code change?

 Oops, you are correct David.  please ignore this suggestion.

 Thanks,
 Gowri Shankar
   thanks,
 
   +-DLS
 



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Re: [Openslp-devel] slptool displays multiple attributes when only 1 should be

[Nick Wagner]

On Wed, Sep 19, 2012 at 1:14 PM, Nick Wagner ne...@wingedbeast.org wrote:

 If there is no DA, these would be multicast requests.  I think what's
 happening is that slptool does the request for attributes multiple times
 via multicast, and getting a response each time.  I'm apparently not in a
 position to recreate this -- could you sniff it?

 --Nick


 On Wed, Sep 19, 2012 at 12:25 PM, Jim Marshall 
 jim.marsh...@wbemsolutions.com wrote:

  Nick Wagner wrote:

 Sorry to take so long with this.  I tried the trunk code on my machine
 (xp with vs2010), and couldn't replicate the problem.  Do you have a DA
 running?  Could this be dropping to multicast somehow?

 I believe we only have SA's running on our network. Doing a

 slpd findsrvs service:directory-agent

 returns nothing but 'service:service-agent' returns 8 entries.

 How can I tell if it is dropping to multicast?

 Thanks


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Re: [Openslp-devel] Building issue on Linux running on Windows

[Nick Wagner]

Silly question, but did you make sure there were firewall exclusions for
SLPd and slptool?  That still gets me now and then...

--Nick

On Fri, Sep 14, 2012 at 12:25 PM, Jim Marshall 
jim.marsh...@wbemsolutions.com wrote:

  Ian Norton wrote:

 slp.h:

  SLP_NETWORK_TIMED_OUT  = -19

  Are you running slpd of the right version?

 Yes slpd 2.0 is running and as an aside the 1.x version runs fine

 C:\Temp\openslp\win32\Win32\Debugslpd -install
 Service Location Protocol installed.

 C:\Temp\openslp\win32\Win32\Debugslpd.exe -version
 slpd version: 2.0.0
 compile options:
debugging:disabled
predicates:   enabled
slpv1 compatability:  enabled
slpv2 security:   disabled


 On 14 September 2012 17:55, Ian Norton inor...@gmail.com wrote:

 I seem to recall that -19 means that you couldnt contact the slpd
 process.


 On 14 September 2012 16:56, Jim Marshall 
 jim.marsh...@wbemsolutions.comwrote:

 Hi,
   We've written a test script to test the basic functionality of OpenSLP
 (basic sanity check stuff), it works fine with the older SLP (1.0.9a). I
 grabbed the trunk and built it on Windows 7 (with VS 2011 Beta), it
 builds fine and slpd installs and runs. using slptool to perfrom a
 findsrvs operation works, however; when I try to manually register a
 service with slptool I get error -19:

 C:\Temp\openslp\win32\Win32\Debugslptool register
 service:myserv.x://myhost.com (attr1=val1),(attr2=val2)
 errorcode: -19

 What am I doing wrong?

 Additionally I brought the svn tree to a Linux (CentOS 5.5, 64bit)
 machine, it will not build. I run autogen.sh and it spits out an error
 regarding AC_USE_SYSTEM_EXTENSIONS but the configure script is
 generated. When I run the configure script I get the following error:

 ./configure --prefix=/home/jmars/trees/openslp/
 configure: error: cannot find install-sh or install.sh in . ./.. ./../..

 autoconf version: 2.59
 automake version: 1.96
 libtool version: 1.5.22
 GNU Make version: 3.81

 any thoughts on what I am doing wrong here?

 Thank you
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Re: [Openslp-devel] [Openslp-users] OpenSLP 2.0 release?

[Nick Wagner]

Well, on the openslp devel archive for june, it looks like there's an
outstanding patch and a defect in slp_predicate.c and slpd_predicate.c.
 Mainly, however, I think we need to be sure that the release has some
reasonable testing on the various versions (Windows, Linux, OS X), and we
should then pull the trigger on a release.

What do other developers think?

--Nick


On Wed, Aug 22, 2012 at 9:17 AM, Jim Marshall 
jim.marsh...@wbemsolutions.com wrote:

  Is there list of what needs to be done? We may have some spare cycles to
 work on them.

 Jim
 Nick Wagner wrote:

 I'm not sure right now.  There appears to be one or two outstanding items
 on this mailing list, and everyone seems to be busy.  I brought the same
 issue up a couple of weeks ago, and then my priorities were shifted at
 work, so I let it drop.

  --Nick

 On Mon, Aug 20, 2012 at 10:40 AM, Jim Marshall 
 jim.marsh...@wbemsolutions.com wrote:

  Hi,
  We're in the midst of planning our next major release and would like to
 have OpenSLP 2.0 as part of that product. We would prefer to have a 2.0
 release rather then a BETA or snapshot, what needs to be done to make that
 happen?

 Jim
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Re: [Openslp-devel] memdup function namespace conflict

[Nick Wagner]

No objections here.

On Mon, Jan 30, 2012 at 11:33 AM, Dan Streetman ddstr...@ieee.org wrote:

 I opened a feature request to fix a namespace conflict, for the
 function 'memdup' which is used in both openslp and net-snmp:

 https://sourceforge.net/tracker/?func=detailaid=3481708group_id=1730atid=351730

 This seems to be a easy change to openslp, anyone see any problems
 with adding it?


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Re: [Openslp-devel] Unable to find SLP Services using SLPFindSrvs function

[Nick Wagner]

Wireshark is your friend.  I'll walk you through the trace.  Packets 6, 7,
11, and 12 are all SLP (SRVLOC) packets.  They are being multicast from your
machine to the SLP multicast address/port.  Packets 6  11 are libslp
looking for directory agents -- if you open up one of the packets you can
see that the service type list is service:directory-agent.  But packets 7
 12 show a problem. They are requesting acn.esta when they should be
requesting service:acn.esta.  Make sure the string you are passing to the
SLPFindSrvs call is service:acn.esta and we can work from there.

--Nick


On Fri, Sep 23, 2011 at 7:33 AM, JanakiRam Palepu palepujanaki...@gmail.com
 wrote:

 Thanks Nick for your valuable suggestions.

 I've tried the possible ways suggested. Please find my inline replies.

 On Thu, Sep 22, 2011 at 8:27 PM, Nick Wagner ne...@wingedbeast.orgwrote:

 Whenever I this sort of thing happens, there are a few steps I take:

 1) Check your firewall and make sure it is either off or your application
 is properly excepted.  This has solved countless problems for me.


 Firewall on Mac was turned-off by default. I got the results ( published
 earlier with/wihtout SLPD existence ) were tested when Firewall was
 turned-Off.
 I dont think this option applies to my case.


 2) If you are expecting unicast traffic between two devices, make sure
 they can send packets to each other.  Are they both plugged in?  Are their
 IP configurations correct?  Can they ping each other?


 I can ping the entertainment device from my mac and  subnet mask for device
 as well as Mac are set to same value. I am sure that my network settings are
 properly set to communicate with device.


 3) Get a wireshark trace of what's going on in your network.  This will
 help you determine if no multicast is leaving your machine, if no other app
 is responding to your requests, or if something else is going on.  The
 wireshark display filter keyword for SLP is srvloc.


 I've downloaded the Wireshark Tool from their website as per your advice
 and able to capture the log in my network. Please find the attached log.

 As am new to this tool ,  i could not  interpret/understand the results
 shown in log. It would be great if you can help me to understand the issue.

 My Mac IP : 192.168.1.97
 Entertainment Device IP : 192.168.1.999



 4) If you think it is your application, either in a debugger or with
 sprinkled test messages trace your code execution to see how it operates.
  In your case, see if SLPFindSrvs actually gets to the point where it sends
 a multicast packet, or if it somehow returns early.


 I've investigated further on the calls being made internally when
 SLPFindSrvs is being called. I suspect that NetworkMcastRqstRply is unable
 to communicate futher hence its not able to detect the SLP Service inabsence
 of Slpd.

 I am attaching the SLP Log for your reference.

 Please provide your analysis on the reports i have provided.

 Thanks in Advance.

 Regards,
 Janakiram

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Re: [Openslp-devel] Unable to find SLP Services using SLPFindSrvs function

[Nick Wagner]

Whenever I this sort of thing happens, there are a few steps I take:

1) Check your firewall and make sure it is either off or your application is
properly excepted.  This has solved countless problems for me.

2) If you are expecting unicast traffic between two devices, make sure they
can send packets to each other.  Are they both plugged in?  Are their IP
configurations correct?  Can they ping each other?

3) Get a wireshark trace of what's going on in your network.  This will help
you determine if no multicast is leaving your machine, if no other app is
responding to your requests, or if something else is going on.  The
wireshark display filter keyword for SLP is srvloc.

4) If you think it is your application, either in a debugger or with
sprinkled test messages trace your code execution to see how it operates.
 In your case, see if SLPFindSrvs actually gets to the point where it sends
a multicast packet, or if it somehow returns early.

--Nick

On Thu, Sep 22, 2011 at 7:04 AM, JanakiRam Palepu palepujanaki...@gmail.com
 wrote:

 Yes, i investigated the functions being called and some of them were named
 with Multicast. Please find the functions being called for SLPFindSrvs.


 SLPFindSrvs - ProcessSrvRqst
 - NetworkMcastRqstRply,- NetworkMcastRqstRply
 - CollateToSLPSrvURLCallback


 *MI_NOT_SUPPORTED is not defined  anywhere in the code. But conditional
 macros are using it as not defined then adds logic  if defined does
 nothing.*

 **

 Please help me to discover slp services using UA.


 Cheers,

 Janakiram


 On Thu, Sep 22, 2011 at 12:12 AM, Nick Wagner ne...@wingedbeast.orgwrote:

 For user agent functionality, libslp does first look for directory agents
 to connect to and query.  But in the absence of a DA, libslp attempts
 multicast requests.  Do you see such multicast requests on the wire?  Is
 MI_NOT_SUPPORTED undefined (If defined, multicast is not compiled in)?

 --Nick


 On Wed, Sep 21, 2011 at 12:17 PM, JanakiRam Palepu 
 palepujanaki...@gmail.com wrote:

 Hi Nick,

 My Requirement is to have a iOS Application to discover the enter devices
 without using Slpd ( as iOS cannot run processes such as Slpd due to its
 Sanbox nature ).

 In our environment we have a configured Mac ( having iOS Simulator ) and
 Entertainment Devices only in our LAN.

 After compiling the code , make install produced a static library as well
 as header file and couple of resources ( slp.conf  slp.spi ) .

 We have created a Sample iOS application which uses libslp.a ( static
 library ) , resources ( slp.conf  slp.spi ) and header file ( slp.h ).
 Using the functions exposed in slp.h , we are making calls to SLPFindSrvs
 function.

 *Steps :*
 1. Created a  SLP Handle using SLPOpen.
 2, After successful creation , calling SLPFindSrvs function with
 following Parameters.

 a)  srvType : service:acn.esta
 b)  scopelist : ACN-DEFAULT OR NULL
 c)  filter : NULL

 3. SLPFindSrvs Callback function gets called always but with varied
 results.

 a) When Slpd Co-existed in Mac OS , Callback function discovered the
 services available.
 b) In the absence of Slpd , Callback function gets called only once with
  errorCode value SLP_LAST_CALL whic does not discover the service at all.


 I suspect the libslp functions are heavily depend on Slpd existence. Am i
 wrong ??.

 Please help me to analyze the behavior of this function based on slpd
 existence.

 Thanks,
 Janakiram

 On Tue, Sep 20, 2011 at 8:31 PM, Nick Wagner ne...@wingedbeast.orgwrote:

 Hmm..  Could you get a wireshark trace of this?  I'm curious to see if
 any multicast is happening.

 Oh, and I'm glad to see the service:acn.esta in the example.  I work
 at ETC. :)

 --Nick



 On Tue, Sep 20, 2011 at 9:31 AM, sudheer dantuluri 
 dantuluri.sudh...@gmail.com wrote:

 Hi,

 We have successfully compiled the openSLP2.0beta2 source code for iOS
 and with your instruction written a sample application to find out list of
 services available on the local network -- to do this we have used slp.h 
 and
 libslp.a files created by GNU Make process.

 PFA Example file for the sample code.

 My Environment Setup has an iPhone Simulator and one Entertainment
 Device ( Wireless Audio Receiver exposing SLP service ), only these two 
 are
 connected in LAN.

 The Same code (SLPFindSrvs callback function ) behaves differently
 when its executed along with/without slpd tool.

 Output when *SLPD is running* when Sample Code is Executed.

 -

 *2011-09-20 17:29:49.739 openSLPExample[6105:207] Service Type =
 service:acn.esta*

 *2011-09-20 17:29:49.739 openSLPExample[6105:207] Host Identification
 = *

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] Port Number = 0*

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] Family = IP*

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] URL Remainder =
 DD200C02--11DD-A000-000EDDCC*

 *
 *

 Output when *SLPD is NOT RUNNING* when Sample

Re: [Openslp-devel] Unable to find SLP Services using SLPFindSrvs function

[Nick Wagner]

For user agent functionality, libslp does first look for directory agents to
connect to and query.  But in the absence of a DA, libslp attempts multicast
requests.  Do you see such multicast requests on the wire?  Is
MI_NOT_SUPPORTED undefined (If defined, multicast is not compiled in)?

--Nick

On Wed, Sep 21, 2011 at 12:17 PM, JanakiRam Palepu 
palepujanaki...@gmail.com wrote:

 Hi Nick,

 My Requirement is to have a iOS Application to discover the enter devices
 without using Slpd ( as iOS cannot run processes such as Slpd due to its
 Sanbox nature ).

 In our environment we have a configured Mac ( having iOS Simulator ) and
 Entertainment Devices only in our LAN.

 After compiling the code , make install produced a static library as well
 as header file and couple of resources ( slp.conf  slp.spi ) .

 We have created a Sample iOS application which uses libslp.a ( static
 library ) , resources ( slp.conf  slp.spi ) and header file ( slp.h ).
 Using the functions exposed in slp.h , we are making calls to SLPFindSrvs
 function.

 *Steps :*
 1. Created a  SLP Handle using SLPOpen.
 2, After successful creation , calling SLPFindSrvs function with following
 Parameters.

 a)  srvType : service:acn.esta
 b)  scopelist : ACN-DEFAULT OR NULL
 c)  filter : NULL

 3. SLPFindSrvs Callback function gets called always but with varied
 results.

 a) When Slpd Co-existed in Mac OS , Callback function discovered the
 services available.
 b) In the absence of Slpd , Callback function gets called only once with
  errorCode value SLP_LAST_CALL whic does not discover the service at all.


 I suspect the libslp functions are heavily depend on Slpd existence. Am i
 wrong ??.

 Please help me to analyze the behavior of this function based on slpd
 existence.

 Thanks,
 Janakiram

 On Tue, Sep 20, 2011 at 8:31 PM, Nick Wagner ne...@wingedbeast.orgwrote:

 Hmm..  Could you get a wireshark trace of this?  I'm curious to see if any
 multicast is happening.

 Oh, and I'm glad to see the service:acn.esta in the example.  I work at
 ETC. :)

 --Nick



 On Tue, Sep 20, 2011 at 9:31 AM, sudheer dantuluri 
 dantuluri.sudh...@gmail.com wrote:

 Hi,

 We have successfully compiled the openSLP2.0beta2 source code for iOS and
 with your instruction written a sample application to find out list of
 services available on the local network -- to do this we have used slp.h and
 libslp.a files created by GNU Make process.

 PFA Example file for the sample code.

 My Environment Setup has an iPhone Simulator and one Entertainment Device
 ( Wireless Audio Receiver exposing SLP service ), only these two are
 connected in LAN.

 The Same code (SLPFindSrvs callback function ) behaves differently when
 its executed along with/without slpd tool.

 Output when *SLPD is running* when Sample Code is Executed.

 -

 *2011-09-20 17:29:49.739 openSLPExample[6105:207] Service Type =
 service:acn.esta*

 *2011-09-20 17:29:49.739 openSLPExample[6105:207] Host Identification =
 *

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] Port Number = 0*

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] Family = IP*

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] URL Remainder =
 DD200C02--11DD-A000-000EDDCC*

 *
 *

 Output when *SLPD is NOT RUNNING* when Sample Code is Executed.

 -

 *2011-09-20 17:31:13.968 openSLPExample[6137:207]
 ***

 *2011-09-20 17:31:13.969 openSLPExample[6137:207] MySLPSrvURLCallback
 Error Code is  = 1*

 *2011-09-20 17:31:13.970 openSLPExample[6137:207]
 ***
 *
 *
 

 I suspect my sample code is internally taking the help of SLPD ( meaning
 DA) to discover the slp service exposed by the entertainment device. So
 thats why its showing the output only when the slpd is running.

 Problem with my environment is in iOS we cannot run the process such as
 slpd as its sanboxed. I can only use the static library and header file to
 discover the slp services.

 Please help me to resolve the issues.


 Thanks
 Sudheer




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 threats, fraudulent activity and more. Splunk takes this data and makes
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Re: [Openslp-devel] Unable to find SLP Services using SLPFindSrvs function

[Nick Wagner]

Hmm..  Could you get a wireshark trace of this?  I'm curious to see if any
multicast is happening.

Oh, and I'm glad to see the service:acn.esta in the example.  I work at
ETC. :)

--Nick


On Tue, Sep 20, 2011 at 9:31 AM, sudheer dantuluri 
dantuluri.sudh...@gmail.com wrote:

 Hi,

 We have successfully compiled the openSLP2.0beta2 source code for iOS and
 with your instruction written a sample application to find out list of
 services available on the local network -- to do this we have used slp.h and
 libslp.a files created by GNU Make process.

 PFA Example file for the sample code.

 My Environment Setup has an iPhone Simulator and one Entertainment Device (
 Wireless Audio Receiver exposing SLP service ), only these two are connected
 in LAN.

 The Same code (SLPFindSrvs callback function ) behaves differently when
 its executed along with/without slpd tool.

 Output when *SLPD is running* when Sample Code is Executed.

 -

 *2011-09-20 17:29:49.739 openSLPExample[6105:207] Service Type =
 service:acn.esta*

 *2011-09-20 17:29:49.739 openSLPExample[6105:207] Host Identification = *

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] Port Number = 0*

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] Family = IP*

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] URL Remainder =
 DD200C02--11DD-A000-000EDDCC*

 *
 *

 Output when *SLPD is NOT RUNNING* when Sample Code is Executed.

 -

 *2011-09-20 17:31:13.968 openSLPExample[6137:207]
 ***

 *2011-09-20 17:31:13.969 openSLPExample[6137:207] MySLPSrvURLCallback
 Error Code is  = 1*

 *2011-09-20 17:31:13.970 openSLPExample[6137:207]
 ***
 *
 *
 

 I suspect my sample code is internally taking the help of SLPD ( meaning
 DA) to discover the slp service exposed by the entertainment device. So
 thats why its showing the output only when the slpd is running.

 Problem with my environment is in iOS we cannot run the process such as
 slpd as its sanboxed. I can only use the static library and header file to
 discover the slp services.

 Please help me to resolve the issues.


 Thanks
 Sudheer

--
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2dcopy1___
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Re: [Openslp-devel] Unable to find SLP Services using SLPFindSrvs function

[Nick Wagner]

And what SLP scope they're using in the requests.  ACN devices typically
live on the ACN-DEFAULT scope.

--Nick

On Tue, Sep 20, 2011 at 10:01 AM, Nick Wagner ne...@wingedbeast.org wrote:

 Hmm..  Could you get a wireshark trace of this?  I'm curious to see if any
 multicast is happening.

 Oh, and I'm glad to see the service:acn.esta in the example.  I work at
 ETC. :)

 --Nick



 On Tue, Sep 20, 2011 at 9:31 AM, sudheer dantuluri 
 dantuluri.sudh...@gmail.com wrote:

 Hi,

 We have successfully compiled the openSLP2.0beta2 source code for iOS and
 with your instruction written a sample application to find out list of
 services available on the local network -- to do this we have used slp.h and
 libslp.a files created by GNU Make process.

 PFA Example file for the sample code.

 My Environment Setup has an iPhone Simulator and one Entertainment Device
 ( Wireless Audio Receiver exposing SLP service ), only these two are
 connected in LAN.

 The Same code (SLPFindSrvs callback function ) behaves differently when
 its executed along with/without slpd tool.

 Output when *SLPD is running* when Sample Code is Executed.

 -

 *2011-09-20 17:29:49.739 openSLPExample[6105:207] Service Type =
 service:acn.esta*

 *2011-09-20 17:29:49.739 openSLPExample[6105:207] Host Identification = *

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] Port Number = 0*

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] Family = IP*

 *2011-09-20 17:29:49.740 openSLPExample[6105:207] URL Remainder =
 DD200C02--11DD-A000-000EDDCC*

 *
 *

 Output when *SLPD is NOT RUNNING* when Sample Code is Executed.

 -

 *2011-09-20 17:31:13.968 openSLPExample[6137:207]
 ***

 *2011-09-20 17:31:13.969 openSLPExample[6137:207] MySLPSrvURLCallback
 Error Code is  = 1*

 *2011-09-20 17:31:13.970 openSLPExample[6137:207]
 ***
 *
 *
 

 I suspect my sample code is internally taking the help of SLPD ( meaning
 DA) to discover the slp service exposed by the entertainment device. So
 thats why its showing the output only when the slpd is running.

 Problem with my environment is in iOS we cannot run the process such as
 slpd as its sanboxed. I can only use the static library and header file to
 discover the slp services.

 Please help me to resolve the issues.


 Thanks
 Sudheer



--
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2dcopy1___
Openslp-devel mailing list
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Re: [Openslp-devel] Segfault Seen In Latest Openslp

[Nick Wagner]

Yes, I didn't spot what you were doing until after I sent the email.  I've
never done that trick inside of a union -- I wouldn't think so, but is it
possible some compiler optimization is getting in the way?  Varun, what kind
of compiler/environment are you using?

--Nick

On Mon, Aug 1, 2011 at 1:51 PM, Richard Morrell r.morr...@hotmail.comwrote:

  This seems to be in the code I added while at Thales.

 I left there recently, and am just getting myself set back up to have access 
 to
 the source and mailing lists from home rather than work.

 Any further information on this ?

 See comments below.


 On 07/28/2011 03:40 AM, Varun Chandramohan wrote:
  On Thursday, July 28, 2011 12:51:47 am Nick Wagner wrote:
  The SLPDPredicateTreeNode structure does seem to have a problem.  If we 
  left
  the larger-sized array, guards should still be added to ensure that 
  neither
  strncpy will step off the end of the member 'storage'.  Others may have
  differing opinions, but I'd change storage to be a char* and alloc it to 
  the
  right size (tag_len + value_len + terminating nulls), as long as we make
  sure that it's freed appropriately.  We're allocating all the nodes in the
  tree anyway.
 
  --Nick
 
  I think we can do that.  If all are ok with it, can we make this change?
 It seems that the extra space for the attributes is already taken care
 of in allocating the memory for ppNode (slpd_predicate:1645). So Nick's
 proposed change shouldn't be necessary. But we still need to find out
 why it doesn't work properly yet...
 
 Agreed. The assumption was that storage was allocated as the last structure
 member at the end of the structure, and is initially two bytes long to allow 
 for
 the trailing NUL characters at the end of each of the tag and value strings. 
 The
 space allocated is increased by lhs_len+rhs_len to allow for the storage of 
 the
 strings. This is so that you don't need to worry about separately allocating 
 and
 de-allocating storage for the (usually short) tag and value strings.

 It works fine for me using the latest trunk source built on Linux Mint 7
 x86_64. Can we get any more information from the failure ?  How repeatable is
 it ? Can you generate a core file and get information like the values of 
 lhs_len
 and rhs_len, operator, and *ppNode at the point of failure using gdb ?


 Can we be certain that the 'storage' field is actually exactly at the
 end of the SLPPredicateTreeNode structure?
 Even if it wasn't, it shouldn't cause a segmentation fault, although it would
 overwrite any structure members allocated following it.


 
 BR,
  Roel
 
  - Varun
 
  On Wed, Jul 27, 2011 at 1:27 AM, Varun Chandramohan
  varunc@...  wrote:
 
  **
 
  Hi Folks,
 
The test team reported a bug. Iam pasting the bug analysis. They seem 
  to
  have found the problem as well with a temporary fix. However i they want 
  our
  opinion on the fix. Please advice.
 
  Using the following command:
 
  slptool findsrvs service:test$ID (foo=value1)
 
this will generat the overflow in createPredicateParseTree doing an 
  strncpy -
 
  line 1656 slpd_predicate.c
 
When reading the comments around operator it appears it is using the 
  operator
 
  2 characters as a place to copy the attribute name.  The attribute name 
  can be
 
  very large.  This is the code:
 
  /* Finished with operator now - just use as temporary pointer 
  to assist
 
  with copying the
 
  * attribute name (lhs) and required value (rhs) into the node
 
  */
 
 operator = (*ppNode)-nodeBody.comparison.storage;
 
 strncpy(operator, lhs, lhs_len);
 
 operator[lhs_len] = '\0';
 
operator is now the pointer of storage in:
 
slpd_predicate.h
 
typedef struct __SLPDPredicateTreeNode
 
  {
 
  SLPDPredicateTreeNodeType nodeType;
 
  struct __SLPDPredicateTreeNode *next; /* next node in a 
  combination */
 
  union {
 
 struct __SLPDPredicateLogicalBody
 
 {
 
struct __SLPDPredicateTreeNode *first;
 
 } logical;
 
 struct __SLPDPredicateComparisonBody
 
 {
 
size_t tag_len;
 
char *tag_str;
 
size_t value_len;
 
char *value_str;
 
char storage[2];
 
 } comparison;
 
  } nodeBody;
 
  } SLPDPredicateTreeNode;
 
Copying of attributes onto 2char array fails though doesn't fail in 
  older
 
  builds so I am not sure if build options or strictness has changed.
 
Since there were no cleanup routines if the pointer was malloced, I 
  just
 
  increased --  storage[200] and the testcase runs without fail and the 
  area will
 
  get freed with the structure.
 
Is this the best way out?
 
Regards,
 
  Varun
 
 
 
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Re: [Openslp-devel] Segfault Seen In Latest Openslp

[Nick Wagner]

The SLPDPredicateTreeNode structure does seem to have a problem.  If we left
the larger-sized array, guards should still be added to ensure that neither
strncpy will step off the end of the member 'storage'.  Others may have
differing opinions, but I'd change storage to be a char* and alloc it to the
right size (tag_len + value_len + terminating nulls), as long as we make
sure that it's freed appropriately.  We're allocating all the nodes in the
tree anyway.

--Nick


On Wed, Jul 27, 2011 at 1:27 AM, Varun Chandramohan 
var...@linux.vnet.ibm.com wrote:

 **

 Hi Folks,

  The test team reported a bug. Iam pasting the bug analysis. They seem to
 have found the problem as well with a temporary fix. However i they want our
 opinion on the fix. Please advice.

 Using the following command:

 slptool findsrvs service:test$ID (foo=value1)

  this will generat the overflow in createPredicateParseTree doing an strncpy -

 line 1656 slpd_predicate.c

  When reading the comments around operator it appears it is using the 
 operator

 2 characters as a place to copy the attribute name.  The attribute name can be

 very large.  This is the code:

/* Finished with operator now - just use as temporary pointer to 
 assist

 with copying the

* attribute name (lhs) and required value (rhs) into the node

*/

   operator = (*ppNode)-nodeBody.comparison.storage;

   strncpy(operator, lhs, lhs_len);

   operator[lhs_len] = '\0';

  operator is now the pointer of storage in:

  slpd_predicate.h

  typedef struct __SLPDPredicateTreeNode

 {

SLPDPredicateTreeNodeType nodeType;

struct __SLPDPredicateTreeNode *next; /* next node in a combination */

union {

   struct __SLPDPredicateLogicalBody

   {

  struct __SLPDPredicateTreeNode *first;

   } logical;

   struct __SLPDPredicateComparisonBody

   {

  size_t tag_len;

  char *tag_str;

  size_t value_len;

  char *value_str;

  char storage[2];

   } comparison;

} nodeBody;

 } SLPDPredicateTreeNode;

  Copying of attributes onto 2char array fails though doesn't fail in older

 builds so I am not sure if build options or strictness has changed.

  Since there were no cleanup routines if the pointer was malloced, I just

 increased -- storage[200] and the testcase runs without fail and the area 
 will

 get freed with the structure.

  Is this the best way out?

  Regards,

 Varun



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Re: [Openslp-devel] SLP User Agent for iPad/iPhone

[Nick Wagner]

I haven't done any ipad development, does anyone else on the list have
experience?  I know some people have been able to build and get the client
side working on android.

 One potential issue I can see is the fact that SLP uses port 427, which
traditionally requires the process to have root access to open.

--Nick

On Thu, Jul 14, 2011 at 3:44 AM, sudheer dantuluri 
dantuluri.sudh...@gmail.com wrote:

 Hi Team,

 I'm an iPhone/iPad developer and I'm trying to develop an application which
 can identify devices which announces their services using SLP in a network.
 I've googled in may sites but couldn't find any help.
 It would be great if someone of you can help me out as how my iPad
 application can act as a User Agent role of SLP. Is there any specific
 framework or library for iPad where i can use it to get the devices in the
 network which acts as Service Agents role of SLP. I'm new to this SLP
 concept. So, please spare me and provide me some kind of solution.

 Thanks in advance.
 Have a nice day.
 Sudheer



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Re: [Openslp-devel] libslp interface question

[Nick Wagner]

Committed in 1643

On Tue, Sep 7, 2010 at 11:00 PM, Varun Chandramohan 
var...@linux.vnet.ibm.com wrote:

 Hi Nick,

 I got the test result from my team, they have already tested
 slpd and it seems to give no issues with this change. I think its good to go
 upstream, unless someone has any objection.

 Regards,
 Varun

 On Wednesday, September 08, 2010 06:39:44 am Varun Chandramohan wrote:
  Hi Nick,
 
   Give me one more day, i have tested slptool which uses libslp
 but not really slpd. I think it must not cause any issue, but let me test
 anyway. Since we are only picking up scope from the returned scopeid of the
 call it must not cause any issue. I will however run a few tests. If you
 want me to run any specific tests let me know. Thanks.
 
  Regards,
  Varun
 
  On Tuesday, September 07, 2010 11:56:41 pm Nick Wagner wrote:
   It looks straightforward enough.  Both the library and slpd use the
 affected
   function -- have you tested both of them?
  
   --Nick
  
   2010/9/7 Varun Chandramohan var...@linux.vnet.ibm.com
  
Hi Nick,
   
 I investigated this issue and found the solution. This
 not a
config problem. Although it can be fixed by changing routing table,
 it is
not the recommended way. I observed other projects get pass this
 limitation
using the scope id. So here is my solution for the problem. Let me
 know what
you think.
   
   
   
 https://sourceforge.net/tracker/?func=detailaid=3061054group_id=1730atid=101730
   
Regards,
Varun
   
On Monday, August 30, 2010 09:31:14 am Varun Chandramohan wrote:
 It is a config issue, but the situation is if we cannot change
 routing
table as we do not have perm in a system
 is it possible to run slptool on LL? Its possible but with the
 routing
limitation. We know the LL of the system where
 slpd is running, but to send a request we have 2 interface and we
 have to
tell slptool to use one of the interfaces to send the request.
 -u wont work as we are not specifying the local address, rather the
address of the system running slpd. I have not tested with -i though?
 So if i specify the ip of the interface to use will it work? Let me
 test
it myself.

 Regards,
 Varun

 On Saturday, August 28, 2010 12:28:54 am Nick Wagner wrote:
  Sorry for not responding sooner.  I think there's still something
 I'm
  missing here that makes me feel it's some sort of config issue
 rather
than
  code issue.   What if they used the ip address of eth1, rather
 than the
  loopback address, in their -u, or used the -i option of slptool?
 
  --Nick
 
  On Thu, Aug 26, 2010 at 9:26 PM, Varun Chandramohan 
  var...@linux.vnet.ibm.com wrote:
 
   Hi Nick,
  
   Is it such a bad idea to introduce optional -I
 option
like the
   way it id done in ping6 for slptool? I understand that
   SLPNetworkCreateDatagram() is not a lib function but can it not
 take
in
   additional parameter as interface? If interface is specified we
 bind
or the
   functionality is same as before. Is there something obvious iam
missing?
  
   Regards,
   Varun
  
   On Wednesday, August 25, 2010 12:34:05 pm Varun Chandramohan
 wrote:
sorry, didnt realize that this is common code for slpd and
 libslp.
it
   wont work with env. Any other suggestions?
   
   
On Wednesday, August 25, 2010 12:26:50 pm Varun Chandramohan
 wrote:
 interestingly i wonder what would happen if i do a bind
 call for
some
   ipv4/ipv6 address here SLPNetworkCreateDatagram()
 After the socket creating we can just call bind( which is
optional,
   only when some env variable is set).
 Iam think some env variable like
 SLP_BIND_ADDR=fe80:x%eth0.
If
   this env is null we skip bind call.
 Will this work?

 Varun

 On Wednesday, August 25, 2010 12:13:45 pm Varun
 Chandramohan
wrote:
  yes thats possible, but their problem is that the system
 does
not
   have admit priv to make changes to routing table or ip address.
 So by
   default the system generates the same
  ip address with fe80 as prefix. That will automatically
 add
routes as
   shown below. Hence the problem.
 
 
  On Wednesday, August 25, 2010 11:41:28 am Nick Wagner
 wrote:
   Is it possible to set eth1 to a different link-local
 address,
e.g.
   fe90::/64, and then unicast to that in slptool?
  
   --Nick
  
   On Tue, Aug 24, 2010 at 10:48 PM, Varun Chandramohan 
   var...@linux.vnet.ibm.com wrote:
  
Hi All,
   
  A customer using openslp faced a funny
 problem.
They
   use slptool
to get their results. The system where

Re: [Openslp-devel] Suggestions For OpenSLP Imporvements.

[Nick Wagner]

I agree with Roel about handling multiple interfaces.  There are definite
differences in how sockets operate in the different OSs, especially with
respect to multicast and multiple NICs.

I'm very glad to see that people are still actively working on making
openSLP better.  I haven't been able to get back to it for quite a while --
I had hoped to test some of these changes on Windows and OS X by now, but
work has taken over my time.

I had a comment on changing net.slp.interfaces.  IP address % interface
doesn't fully solve the specification issues when dealing with link-local
addresses, as those can change underneath you.  The same could potentially
happen with a DHCP address.  What if we changed net.slp.interfaces to
something that also allowed you to select the NICs via MAC address (with the
optional % interface for full differentiation on OSs that supported it)?


--Nick



On Thu, Jul 8, 2010 at 2:17 AM, Roel van de Kraats r...@advancedcargo.euwrote:



 On 07/08/2010 08:49 AM, Varun Chandramohan wrote:
  Hi All,
 
I have been looking into openslp code and i found a few changes
 that might make things better in openslp. I dont have patches to share, but
 i will create them if everyone here agrees.
 
 Dear Varun,

 Thanks for putting this effort in improving Openslp and for discussing
 your ideas on the mailing list.
  - Multiple Binding Issue: I observed that, when the list of interfaces is
 not specified in the config file, the slpd daemon reads all interface
 information and binds to all address of all interfaces. I feel this is a
 overkill. When no specific interfaces are given, its much easier to bind to
 :: or INADDR_ANY.
 
 That sounds simpler indeed. However, by doing so a lot of responsibility
 is moved from slpd (which we can adapt to our needs) to the OS (for
 which this is much harder). Since handling multiple interfaces the
 correct way is quite delicate, I'd rather keep this responsibility on
 the slpd side. And although receiving messages may become simpler this
 way, for sending messages it is still necessary to specify the
 interface; otherwise the 'default' interface (chosen by the OS) is used.
 Finally, since the functionality for handling different interfaces is
 needed anyway (in case they are specified in the cfg), it is, in my
 opinion, better to have one mechanism (behavior) for the different
 situations.
  Proposal: In SLPDIncomingInit() function all the address are bound.
 
  if (G_SlpdProperty.interfaces != NULL)
 SLPIfaceGetInfo(G_SlpdProperty.interfaces,ifaces,G_SLPDProcInfo,
 AF_UNSPEC);
  else
 ifaces.iface_count = 0;
  When the interfaces are found to be NULL, we can assume that slpd must
 bind to all inetfaces. So depending on the config file we have 3 cases.
  Case 1: Only IPv4 enabled. We can create TCP/UDP sockets with INADDR_ANY.
  Case 2: Only IPv6 enabled. We can create TCP/UDP sockets with ::
  Case 3: Both IPv6  IPv4 enabled. We can create sockets with :: but use
 IPV6_V6ONLY option set.
 
  This way we will have only 1 or 2 sockets listening instead of all.
 Improves performance as well. My only doubt is how this works with Windows.
 Iam no expert in that.
  If the interfaces are specified then we do exactly what is done now. Is
 that ok with everyone?
 
  - Wrong Representation Of Interfaces In Config File: Although it looked
 at first as a minor issue, this has caused multiple problems to basic
 functionality. Openslp takes in ipaddress without the need for interface
 information.
  This leads to major issues. The function v6GetScope() is faulty function.
 
  There can be cases when interfaces can have same ips. Eg:
  eth2  Link encap:Ethernet  HWaddr 00:06:29:55:60:81
 inet6 addr: fe80::206:29ff:fe55:6081/64 Scope:Link
 UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
 RX packets:4037 errors:0 dropped:0 overruns:0 frame:0
 TX packets:134395 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000
 RX bytes:436006 (425.7 KiB)  TX bytes:14655216 (13.9 MiB)
 Interrupt:16 Base address:0x2200
 
  eth2.30   Link encap:Ethernet  HWaddr 00:06:29:55:60:81
 inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
 inet6 addr: 3001::1/128 Scope:Global
 inet6 addr: fe80::206:29ff:fe55:6081/64 Scope:Link
 UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
 RX packets:367 errors:0 dropped:0 overruns:0 frame:0
 TX packets:15830 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:0
 RX bytes:40872 (39.9 KiB)  TX bytes:1650541 (1.5 MiB)
 
  The LL address of both interfaces are same, In which case it becomes
 clear viewing the v6GetScope() code that the scope id returned will be same
 for both interface but in reality it is different. This results in binding
 to
  only one interface. This is wrong. This has to be changed. This also 

Re: [Openslp-devel] About running SLP daemon on Windows

[Nick Wagner]

It does appear that -debug works on the windows version, and -d does not.
-install and -start do work for me, but I've never used a reg file.  I don't
think the service stores/uses the other command line arguments.

The default locations for these files are already the Windows directory,
what does your Windows\slpd.log say?

--Nick
On Wed, Feb 18, 2009 at 11:54 PM, hudson paul pegpaulhud...@gmail.comwrote:

 Hi All,

 I have installed the Open SLP version 2.0 beta. I'm facing problems in
 running slpd using -d option. Its not running if I give -d as follows.

 C:\Program Files\OpenSLPslpd -d -c c:\WINDOWS\slp.conf -l
 c:\WINDOWS\slpd.log -r c:\slp\slp.reg
 USAGE: slpd -install [auto]|-remove|-start|-stop|-debug [-d] [-c conf file]
 [-l log file] [-s spi fi
 le] [-r reg file] [-v version]
 C:\Program Files\OpenSLP

 Also, if I install it as a service and start it using the following
 command, I'm not getting the services discovered using slptool utility.

 C:\Program Files\OpenSLPslpd -install
 Service Location Protocol installed.

 C:\Program Files\OpenSLPslpd -start -c c:\WINDOWS\slp.conf -l
 c:\WINDOWS\slpd.log -r c:\slp\slp.reg

 C:\Program Files\OpenSLP
 Only if run the slpd in debug mode using the following command, it is
 working fine and I'm getting the services discovered using slptool utility.

 C:\Program Files\OpenSLPslpd -debug -c c:\WINDOWS\slp.conf -l
 c:\WINDOWS\slpd.log -r c:\slp\slp.reg
 Debugging Service Location Protocol.

 Is it how (only in debug mode) the SLP deamon should be started? Can
 anyone provide some inputs on this?

 Regards,
 Paul

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Re: [Openslp-devel] Proposed updates for release 2.0.0

[Nick Wagner]

Unfortunately, these changes have broken the Windows build.  I took some
time today to get it compiling again but I'm not sure when I'll really have
time for testing (which is why I haven't checked it in).

With the new code, I've noticed a slow-down during a slptool findsrvs -- in
my testing on a machine running a DA, slptool will often return -19 (network
timed out).  When I comment out the new KnownDASapnningListFromCache /
 NetworkMultiUcastRqstRply code, everything goes back to normal.  The
existing NetworkConnectToDA functionality makes use of the fact that slpd
always returns the loopback address to any local directory agent queries,
which makes querying very fast.  Is there a potential for the new code to
ignore the loopback even if the scopes match?  Otherwise it's something in
my compile changes, but nothing jumped out as possibly being a culprit.

--Nick


On Wed, Oct 1, 2008 at 3:44 AM, Morrell Richard 
[EMAIL PROTECTED] wrote:

 Hi John,

 I've checked our changes into the trunk, and rebuilt and tested the
 updates.
 I'm happy that the new code is working as expected (subject to the
 limitations of our system setup).

 Regards,
 Richard

 -Original Message-
 From: John Calcote [mailto:[EMAIL PROTECTED]
 Sent: 23 September 2008 17:17
 To: Morrell Richard
 Subject: Re: [Openslp-devel] Proposed updates for release 2.0.0


 Hi Richard,

 I'll hold off as long as you'd like. I'm really in no hurry. Please
 check your changes in, and ensure they build on whatever platforms you
 have available for testing. Keep me posted, and -- as always -- feel
 free to use me as a sounding board if you wish.

 Regards,
 John

 Morrell Richard wrote:
  Hi.
 
  We've been working on some updates to OpenSLP over the past year or so
  for our work here in Thales, using Linux, and we've allocated some
  time to feed these back into the project.  If possible, we'd like to
  get them into the formal 2.0 release, but we realise this is imminent,
  so the first question is, when is this likely to occur ?  And, are our
  updates likely to be accepted for this release ?
 
  We have the following changes, which we have tested  deployed in
  working systems.  Note: we only use OpenSLP on Linux with IPv4, and we
  don't use SLP security - our testing is limited to this setup.
 
  1. Multi-unicast (IPv4 only)
  The current code will only use unicast if it can find a single DA that
  supports all the scopes, otherwise it will use multicast.  As our
  systems use multiple DAs with distinct scopes, this meant we were
  always using multicast convergence.  Our update finds a spanning list
  of DAs that, together, support all the scopes, and searches all of
  them by unicast in parallel.  This gives a quicker response than
  multicast convergence.
 
  2. Stale DAs
  Our DAs represent independent processing hardware, and uncontrolled
  crashes or network faults leave stale entries in the known DA list
  which will always timeout (in unicast searches), reducing
  performance.  Our update adds an option to the SLP configuration
  whereby all DAs can be configured to regularly broadcast their
  presence (DA Advert) at a settable rate (dependent on the daemon's
  timer), and all DAs  SAs so configured will monitor the broadcasts,
  and remove a DA from the list of known DAs if three consecutive
  broadcasts are missed.  This reduces the number of occasions on which
  timeouts occur due to this problem to an acceptable level.  As part of
  this change, we also had to change the cacheing code in the library to
  allow for scopes to disappear.
 
  3. Local registrations are aged
  This is a bugfix for SA registrations with maximum lifetime - they
  were being aged, so we lost our registrations after about 18 hours.
  This is a difference between release 1.2.1 and the pre-2.0 code, and
  is not desired behaviour for us (all our registrations have maximum
  lifetime).  We couldn't see a reason for it, so assume it was a bug
  rather than a deliberate change.
 
  4. Error handling bug
  There is a path though the code that can lead to a null pointer
  segmentation violation.  We only came across this when using jSLP in a
  java app, which managed to set the multicast flag in a unicast
  request, but it could potentially occur in other error situations.
 
  5. Multicast convergence fixes
  A minor performance fix to the multicast convergence code - the RFC
  says convergence will stop when no replies are received in a
  convergence interval, but the code always went to the timeout, so our
  update implements this (subject to a minimum of two iterations).
  The TCP retry code within a multicast request uses the same timeval
  structure as the multicast loop, and thus corrupts the multicast timeout.
 
  *Richard Morrell*
 

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Re: [Openslp-devel] OpenSLP 2.0 beta 1 crash and LiveTribe SLP

[Nick Wagner]

To take care of the obvious -- have you sniffed the packet and validated
that it is correct?  Perhaps slpd isn't gracefully handling a bad packet.

--Nick

On Fri, Aug 1, 2008 at 7:28 AM, Simone Bordet [EMAIL PROTECTED]wrote:

 Hi,

 at LiveTribe we're implementing a pure Java SLP implementation, and
 we're currently testing our upcoming release 2.0 with OpenSLP 2.0 beta
 1 downloaded from SourceForge.

 [EMAIL PROTECTED]:~$ uname -a
 Linux pitt 2.6.24-19-generic #1 SMP Fri Jul 11 23:41:49 UTC 2008 i686
 GNU/Linux

 To compile OpenSLP I did the usual things:
 configure
 make
 sudo make install

 I configured slpd as a DA (isDA = true).

 I get an slpd crash when sending a SrvRqst.
 The SrvRqst has extensions (in particular it has the rfc3059 attribute
 list extension, and other 2 custom extensions), but I get a crash even
 when I don't send any extension.
 The slpd log just before the crash is (without extensions):

 Fri Aug  1 14:15:47 2008
 MESSAGE - Trace message (IN)
 Peer:
   IP address: 192.168.0.3
 Header:
   version = 2
   functionid = 1
   length = 48
   flags = 0
   extoffset = 0
   xid = 20445
   langtag = it
 Message SRVRQST:
   srvtype = service:jmx:rmi
   scopelist = default
   predicate = invalid data!

 Is there any way to have a more detailed error log of slpd that I can
 report here ?

 The invalid data! thing is quite common in OpenSLP 2.0, but I guess
 it only means it's an empty string.

 OpenSLP 1.2.1 does not crash, although it cannot find the services
 asked. This is another issue however, and if I can get OpenSLP 2.0
 going I'll be happy.

 In OpenSLP 2.0, messages that I tested were: DaSrvRqst, DaAdvert,
 SrvReg (fresh), SrvAck, SrvDeReg, and all seem to interoperate well
 with LiveTribe SLP.

 Thanks,

 Simon
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Re: [Openslp-devel] Fix for libslp SEGV at exit

[Nick Wagner]

Looks good -- does this interfere with your atexit() case?

On Fri, Jul 25, 2008 at 2:39 AM, Roel van de Kraats
[EMAIL PROTECTED]wrote:



 On 07/24/2008 08:13 PM, Nick Wagner wrote:

 By which I mean having a LIBSLPPropertyCleanup() that checks s_PropInited
 and does the SLPSpinLockAcquire on the s_PropInitLock before calling
 SLPPropertyExit.

 Sounds good. Please have a look at rev 1595 for my implementation (I was
 the one who removed the old clean-up functionality, so I'm the one to get it
 working again ;-)

   Roel

  --Nick


 On Thu, Jul 24, 2008 at 1:10 PM, Nick Wagner [EMAIL PROTECTED]mailto:
 [EMAIL PROTECTED] wrote:

What if we call SLPPropertyExit as part of the cleanup in
libslp_handle:ExitUserAgentLibrary?


On Mon, Jun 30, 2008 at 8:07 AM, Roel van de Kraats
[EMAIL PROTECTED] wrote:

Hi,

I encountered a SEGV in libslp during exit of an application.
It turned out that
the application called SLPDereg() via atexit(). However,
libslp itself already
cleaned-up its properties via atexit() as well, causing the SEGV.

The following small patch simply disables libslp's atexit()
handler. I don't
believe it is needed anyway, since the used memory will be freed
at application exit automatically.

The patch is against trunk/r1589.

Kind regards,
  Roel van de Kraats


--- begin patch ---

Skip cleaning-up via atexit(), since it causes problems with
applications that will try to deregister via atexit() as well.
Roel van de Kraats

diff -ur openslp-2.0.beta1.r1589/libslp/libslp_property.c
openslp-2.0.beta1/libslp/libslp_property.c
--- openslp-2.0.beta1.r1589/libslp/libslp_property.c
 2008-03-27 00:27:22.0 +0100
+++ openslp-2.0.beta1/libslp/libslp_property.c  2008-06-27
09:02:03.0 +0200
@@ -69,7 +69,9 @@
  SLPSpinLockAcquire(s_PropInitLock);
  if (!s_PropInited  (rv = SLPPropertyInit(gconffile))
== 0);
  {
- atexit(SLPPropertyExit);
+/* Cleaning-up via atexit() will cause problems with
applications that will try to deregister via atexit() as well. */
+/* Since memory will be freed at exit anyway, just skip the
clean-up routine. */
+/* atexit(SLPPropertyExit); */
 s_PropInited = true;
  }
  SLPSpinLockRelease(s_PropInitLock);




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Re: [Openslp-devel] Fix for libslp SEGV at exit

[Nick Wagner]

By which I mean having a LIBSLPPropertyCleanup() that checks s_PropInited
and does the SLPSpinLockAcquire on the s_PropInitLock before calling
SLPPropertyExit.

--Nick

On Thu, Jul 24, 2008 at 1:10 PM, Nick Wagner [EMAIL PROTECTED] wrote:

 What if we call SLPPropertyExit as part of the cleanup in
 libslp_handle:ExitUserAgentLibrary?


 On Mon, Jun 30, 2008 at 8:07 AM, Roel van de Kraats [EMAIL PROTECTED]
 wrote:

 Hi,

 I encountered a SEGV in libslp during exit of an application. It turned
 out that
 the application called SLPDereg() via atexit(). However, libslp itself
 already
 cleaned-up its properties via atexit() as well, causing the SEGV.

 The following small patch simply disables libslp's atexit() handler. I
 don't
 believe it is needed anyway, since the used memory will be freed
 at application exit automatically.

 The patch is against trunk/r1589.

 Kind regards,
   Roel van de Kraats


 --- begin patch ---

 Skip cleaning-up via atexit(), since it causes problems with applications
 that will try to deregister via atexit() as well.
 Roel van de Kraats

 diff -ur openslp-2.0.beta1.r1589/libslp/libslp_property.c
 openslp-2.0.beta1/libslp/libslp_property.c
 --- openslp-2.0.beta1.r1589/libslp/libslp_property.c2008-03-27
 00:27:22.0 +0100
 +++ openslp-2.0.beta1/libslp/libslp_property.c  2008-06-27
 09:02:03.0 +0200
 @@ -69,7 +69,9 @@
   SLPSpinLockAcquire(s_PropInitLock);
   if (!s_PropInited  (rv = SLPPropertyInit(gconffile)) == 0);
   {
 - atexit(SLPPropertyExit);
 +/* Cleaning-up via atexit() will cause problems with applications that
 will try to deregister via atexit() as well. */
 +/* Since memory will be freed at exit anyway, just skip the clean-up
 routine. */
 +/* atexit(SLPPropertyExit); */
  s_PropInited = true;
   }
   SLPSpinLockRelease(s_PropInitLock);



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