You are viewing a plain text version of this content. The canonical link for it is here.
Posted to cvs@httpd.apache.org by jo...@apache.org on 2012/05/23 17:42:33 UTC

svn commit: r1341905 - in /httpd/httpd/trunk: CHANGES configure.in support/suexec.c

Author: jorton
Date: Wed May 23 15:42:33 2012
New Revision: 1341905

URL: http://svn.apache.org/viewvc?rev=1341905&view=rev
Log:
suexec: Add support for logging to syslog as an alternative to a
logfile.

* support/suexec.c (err_output) [AP_LOG_SYSLOG]: Log to syslog.
  (main): Close syslog fd if open, before execv.  Add -V output
  for AP_LOG_SYSLOG.

* configure.in: Add --with-suexec-syslog argument; allow
  --without-suexec-logfile to omit definition of AP_LOG_EXEC.

Modified:
    httpd/httpd/trunk/CHANGES
    httpd/httpd/trunk/configure.in
    httpd/httpd/trunk/support/suexec.c

Modified: httpd/httpd/trunk/CHANGES
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?rev=1341905&r1=1341904&r2=1341905&view=diff
==============================================================================
--- httpd/httpd/trunk/CHANGES [utf-8] (original)
+++ httpd/httpd/trunk/CHANGES [utf-8] Wed May 23 15:42:33 2012
@@ -1,6 +1,10 @@
                                                          -*- coding: utf-8 -*-
 Changes with Apache 2.5.0
 
+  *) suexec: Add support for logging to syslog as an alternative to
+     logging to a file; use --without-suexec-logfile --with-suexec-syslog.  
+     [Joe Orton]
+
   *) mod_proxy_ajp: Reduce memory usage in case of many keep-alive requests on
      one connection. PR 52275. [Naohiro Ooiwa <naohiro ooiwa miraclelinux com>]
 

Modified: httpd/httpd/trunk/configure.in
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/configure.in?rev=1341905&r1=1341904&r2=1341905&view=diff
==============================================================================
--- httpd/httpd/trunk/configure.in (original)
+++ httpd/httpd/trunk/configure.in Wed May 23 15:42:33 2012
@@ -703,7 +703,24 @@ APACHE_HELP_STRING(--with-suexec-gidmin,
 
 AC_ARG_WITH(suexec-logfile,
 APACHE_HELP_STRING(--with-suexec-logfile,Set the logfile),[
-  AC_DEFINE_UNQUOTED(AP_LOG_EXEC, "$withval", [SuExec log file] ) ] )
+  if test "x$withval" = "xyes"; then
+    AC_DEFINE_UNQUOTED(AP_LOG_EXEC, "$withval", [SuExec log file])
+  fi
+])
+
+AC_ARG_WITH(suexec-syslog,
+APACHE_HELP_STRING(--with-suexec-syslog,Set the logfile),[
+  if test $withval = "yes"; then
+    if test "x${with_suexec_logfile}" != "xno"; then
+      AC_MSG_NOTICE([hint: use "--without-suexec-logfile --with-suexec-syslog"])
+      AC_MSG_ERROR([suexec does not support both logging to file and syslog])
+    fi
+    AC_CHECK_FUNCS([vsyslog], [], [
+       AC_MSG_ERROR([cannot support syslog from suexec without vsyslog()])])
+    AC_DEFINE(AP_LOG_SYSLOG, 1, [SuExec log to syslog])
+  fi    
+])
+
 
 AC_ARG_WITH(suexec-safepath,
 APACHE_HELP_STRING(--with-suexec-safepath,Set the safepath),[

Modified: httpd/httpd/trunk/support/suexec.c
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/support/suexec.c?rev=1341905&r1=1341904&r2=1341905&view=diff
==============================================================================
--- httpd/httpd/trunk/support/suexec.c (original)
+++ httpd/httpd/trunk/support/suexec.c Wed May 23 15:42:33 2012
@@ -58,6 +58,10 @@
 #include <grp.h>
 #endif
 
+#ifdef AP_LOG_SYSLOG
+#include <syslog.h>
+#endif
+
 #if defined(PATH_MAX)
 #define AP_MAXPATH PATH_MAX
 #elif defined(MAXPATHLEN)
@@ -69,7 +73,12 @@
 #define AP_ENVBUF 256
 
 extern char **environ;
+
+#ifdef AP_LOG_SYSLOG
+static int log_open;
+#else
 static FILE *log = NULL;
+#endif
 
 static const char *const safe_env_lst[] =
 {
@@ -137,7 +146,14 @@ static void err_output(int is_error, con
 
 static void err_output(int is_error, const char *fmt, va_list ap)
 {
-#ifdef AP_LOG_EXEC
+#if defined(AP_LOG_SYSLOG)
+    if (!log_open) {
+        openlog("suexec", LOG_PID, LOG_DAEMON);
+        log_open = 1;
+    }
+
+    vsyslog(is_error ? LOG_ERR : LOG_INFO, fmt, ap);
+#elif defined(AP_LOG_EXEC)
     time_t timevar;
     struct tm *lt;
 
@@ -295,7 +311,9 @@ int main(int argc, char *argv[])
 #ifdef AP_HTTPD_USER
         fprintf(stderr, " -D AP_HTTPD_USER=\"%s\"\n", AP_HTTPD_USER);
 #endif
-#ifdef AP_LOG_EXEC
+#if defined(AP_LOG_SYSLOG)
+        fprintf(stderr, " -D AP_LOG_SYSLOG\n");
+#elif defined(AP_LOG_EXEC)
         fprintf(stderr, " -D AP_LOG_EXEC=\"%s\"\n", AP_LOG_EXEC);
 #endif
 #ifdef AP_SAFE_PATH
@@ -591,6 +609,12 @@ int main(int argc, char *argv[])
 #endif /* AP_SUEXEC_UMASK */
 
     /* Be sure to close the log file so the CGI can't mess with it. */
+#ifdef AP_LOG_SYSLOG
+    if (log_open) {
+        closelog();
+        log_open = 0;
+    }
+#else
     if (log != NULL) {
 #if APR_HAVE_FCNTL_H
         /*
@@ -612,6 +636,7 @@ int main(int argc, char *argv[])
         log = NULL;
 #endif
     }
+#endif
 
     /*
      * Execute the command, replacing our image with its own.



Re: svn commit: r1341905 - in /httpd/httpd/trunk: CHANGES configure.in support/suexec.c

Posted by Joe Orton <jo...@redhat.com>.
On Wed, May 30, 2012 at 07:50:44AM +0200, Kaspar Brand wrote:
> Wouldn't it be preferrable to use LOG_AUTH/LOG_AUTHPRIV instead?
> suexec's log messages are mostly about authorization, and sometimes
> include information which should probably be hidden from the eyes of
> unprivileged users.

Good point, yes - thanks!  Done in r1344712. 

Regards, Joe

Re: svn commit: r1341905 - in /httpd/httpd/trunk: CHANGES configure.in support/suexec.c

Posted by Kaspar Brand <ht...@velox.ch>.
On 23.05.2012 17:42, jorton@apache.org wrote:
> Author: jorton
> Date: Wed May 23 15:42:33 2012
> New Revision: 1341905
> 
> URL: http://svn.apache.org/viewvc?rev=1341905&view=rev
> Log:
> suexec: Add support for logging to syslog as an alternative to a
> logfile.
> 
> * support/suexec.c (err_output) [AP_LOG_SYSLOG]: Log to syslog.
>   (main): Close syslog fd if open, before execv.  Add -V output
>   for AP_LOG_SYSLOG.

[...]


> @@ -137,7 +146,14 @@ static void err_output(int is_error, con
>  
>  static void err_output(int is_error, const char *fmt, va_list ap)
>  {
> -#ifdef AP_LOG_EXEC
> +#if defined(AP_LOG_SYSLOG)
> +    if (!log_open) {
> +        openlog("suexec", LOG_PID, LOG_DAEMON);
> +        log_open = 1;
> +    }
> +
> +    vsyslog(is_error ? LOG_ERR : LOG_INFO, fmt, ap);
> +#elif defined(AP_LOG_EXEC)
>      time_t timevar;
>      struct tm *lt;
>  

Wouldn't it be preferrable to use LOG_AUTH/LOG_AUTHPRIV instead?
suexec's log messages are mostly about authorization, and sometimes
include information which should probably be hidden from the eyes of
unprivileged users.

Kaspar

Re: svn commit: r1341905 - in /httpd/httpd/trunk: CHANGES configure.in support/suexec.c

Posted by Joe Orton <jo...@redhat.com>.
On Fri, Jun 01, 2012 at 11:31:55AM +0200, Ruediger Pluem wrote:
> jorton@apache.org wrote:
> > --- httpd/httpd/trunk/configure.in (original)
> > +++ httpd/httpd/trunk/configure.in Wed May 23 15:42:33 2012
> > @@ -703,7 +703,24 @@ APACHE_HELP_STRING(--with-suexec-gidmin,
> >  
> >  AC_ARG_WITH(suexec-logfile,
> >  APACHE_HELP_STRING(--with-suexec-logfile,Set the logfile),[
> > -  AC_DEFINE_UNQUOTED(AP_LOG_EXEC, "$withval", [SuExec log file] ) ] )
> > +  if test "x$withval" = "xyes"; then
> 
> Shouldn't that be
> 
> if test "x$withval" != "xno" -a "x$withval" != "x"; then
> 
> otherwise AP_LOG_EXEC gets only defined if --with-suexec-logfile=yes and not if
> --with-suexec-logfile=/someplace/somefile

Good catch, yes, this was wrong.  If --with-foo is given without an 
argument, withval is set to "yes", so I've made it fail for that case.

http://svn.apache.org/viewvc?rev=1345147&view=rev

Regards, Joe

Re: svn commit: r1341905 - in /httpd/httpd/trunk: CHANGES configure.in support/suexec.c

Posted by Ruediger Pluem <rp...@apache.org>.

jorton@apache.org wrote:
> Author: jorton
> Date: Wed May 23 15:42:33 2012
> New Revision: 1341905
> 
> URL: http://svn.apache.org/viewvc?rev=1341905&view=rev
> Log:
> suexec: Add support for logging to syslog as an alternative to a
> logfile.
> 
> * support/suexec.c (err_output) [AP_LOG_SYSLOG]: Log to syslog.
>   (main): Close syslog fd if open, before execv.  Add -V output
>   for AP_LOG_SYSLOG.
> 
> * configure.in: Add --with-suexec-syslog argument; allow
>   --without-suexec-logfile to omit definition of AP_LOG_EXEC.
> 
> Modified:
>     httpd/httpd/trunk/CHANGES
>     httpd/httpd/trunk/configure.in
>     httpd/httpd/trunk/support/suexec.c
> 

> Modified: httpd/httpd/trunk/configure.in
> URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/configure.in?rev=1341905&r1=1341904&r2=1341905&view=diff
> ==============================================================================
> --- httpd/httpd/trunk/configure.in (original)
> +++ httpd/httpd/trunk/configure.in Wed May 23 15:42:33 2012
> @@ -703,7 +703,24 @@ APACHE_HELP_STRING(--with-suexec-gidmin,
>  
>  AC_ARG_WITH(suexec-logfile,
>  APACHE_HELP_STRING(--with-suexec-logfile,Set the logfile),[
> -  AC_DEFINE_UNQUOTED(AP_LOG_EXEC, "$withval", [SuExec log file] ) ] )
> +  if test "x$withval" = "xyes"; then

Shouldn't that be

if test "x$withval" != "xno" -a "x$withval" != "x"; then

otherwise AP_LOG_EXEC gets only defined if --with-suexec-logfile=yes and not if
--with-suexec-logfile=/someplace/somefile

> +    AC_DEFINE_UNQUOTED(AP_LOG_EXEC, "$withval", [SuExec log file])
> +  fi
> +])
> +
> +AC_ARG_WITH(suexec-syslog,
> +APACHE_HELP_STRING(--with-suexec-syslog,Set the logfile),[
> +  if test $withval = "yes"; then
> +    if test "x${with_suexec_logfile}" != "xno"; then
> +      AC_MSG_NOTICE([hint: use "--without-suexec-logfile --with-suexec-syslog"])
> +      AC_MSG_ERROR([suexec does not support both logging to file and syslog])
> +    fi
> +    AC_CHECK_FUNCS([vsyslog], [], [
> +       AC_MSG_ERROR([cannot support syslog from suexec without vsyslog()])])
> +    AC_DEFINE(AP_LOG_SYSLOG, 1, [SuExec log to syslog])
> +  fi    
> +])
> +
>  
>  AC_ARG_WITH(suexec-safepath,
>  APACHE_HELP_STRING(--with-suexec-safepath,Set the safepath),[
>