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Bug #73214 krb5-config usage inadvertently skipped
Submitted: 2016-09-30 21:29 UTC Modified: 2016-11-26 23:55 UTC
From: michael at orlitzky dot com Assigned: stas (profile)
Status: Closed Package: *Compile Issues
PHP Version: 7.0.11 OS:
Private report: No CVE-ID: None
View Developer Edit
 [2016-09-30 21:29 UTC] michael at orlitzky dot com 
Description:
------------
One of our ./configure options is --with-kerberos=<DIR>. The value of <DIR> gets stored in the PHP_KERBEROS variable if a directory is supplied. There is a function in aclocal.m4:

AC_DEFUN([PHP_SETUP_KERBEROS],[
  ...

  dnl If krb5-config is found try using it
  if test "$PHP_KERBEROS" = "yes" && test -x "$KRB5_CONFIG"; then
    KERBEROS_LIBS=`$KRB5_CONFIG --libs gssapi`
    KERBEROS_CFLAGS=`$KRB5_CONFIG --cflags gssapi`
  ...

The krb5-config program is the preferred way to figure out which libs/flags are needed to build with kerberos support, because it works with both the MIT and Heimdal implementations. However, if you look carefully at the test, it's checking the value of <DIR> against "yes". Naturally that fails; instead it should be

  test "$PHP_KERBEROS" != "no"

Doing so prevents the MIT lib names from getting appended when the Heimdal implementation is used. In other words, krb5-config works, it just isn't getting used.

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 [2016-11-26 23:55 UTC] stas@php.net
-Status: Open +Status: Closed -Assigned To: +Assigned To: stas
 [2016-11-26 23:55 UTC] stas@php.net 
The fix for this bug has been committed.

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