[privoxy-devel] [ ijbswa-Bugs-2905995 ] getaddrinfo() fails with uClibc 0.9.29

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Bugs item #2905995, was opened at 2009-11-30 14:50
Message generated for change (Comment added) made by fabiankeil
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Category: unix-specific
Group: version 3.0.15 beta
Status: Closed
Resolution: Invalid
Priority: 5
Private: No
Submitted By: Stephan (stephan79)
Assigned to: Fabian Keil (fabiankeil)
Summary: getaddrinfo() fails with uClibc 0.9.29

Initial Comment:
Compiling Privoxy 3.0.15 for an embedded system (AVM FritzBox router using freetz), Privoxy gives the following error message when a client tries to connect to the internet over Privoxy:
Nov 30 12:04:31.625 00000402 Info: Can not resolve www.google.de: Bad value for ai_flags

The problem is related to the getaddrinfo() function, but I couldn't figure out why it fails. Please find attached the "debug 4096" output and an strace.

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>Comment By: Fabian Keil (fabiankeil)
Date: 2009-12-01 18:26

Message:
Thanks for the confirmation.

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Comment By: Stephan (stephan79)
Date: 2009-11-30 16:42

Message:
You're right. AI_NUMERICSERV is defined, but not supported. This bug is
fixed in uClibc 0.9.30. The patch is at
http://www.mail-archive.com/uc...@uc.../msg01285.html

I will add a backported patch to our uClibc to fix that bug. I'm not sure
if anything in privoxy should be changed as it does the right thing.

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Comment By: Fabian Keil (fabiankeil)
Date: 2009-11-30 15:38

Message:
Thanks for the report.

It seems that one or both of the flags AI_NUMERICSERV and AI_ADDRCONFIG
is/are defined but not actually supported.

To work around the problem you could try adding:

#undef AI_NUMERICSERV
#define AI_NUMERICSERV 0

below the line "#define MAX_LISTEN_BACKLOG 128" in jbsockets.c.

If it still doesn't work, add:

#undef AI_ADDRCONFIG
#define AI_ADDRCONFIG 0

and if it still fails use all four lines.

Note that these flags have a purpose, so it might be worth investigating
why they are defined but useless in your environment. It could be that you
are unintentionally mixing uClibc header files with glibc header files.

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