Re: Empty cookies [Was Re: libapreq2 co-maintainer]
apreq does the right thing now by both throwing an
exception (indicating a malformed cookie) and parsing
the header correctly. This is a very old subject:
Thomas should be using eval like so:
$apreq = APR::Request::Apache2-handle($r);
my $jar = eval { $apreq-jar };
$jar = $@-jar if $@;
...
IOW not a bug, please don't fix.
- Original Message -
From: Issac Goldstand mar...@beamartyr.net
To: j...@apache.org
Cc: Thomas Busch tbu...@cpan.org; apreq-dev@httpd.apache.org
Sent: Thursday, June 21, 2012 2:19 PM
Subject: Empty cookies [Was Re: libapreq2 co-maintainer]
On 20/06/2012 14:19, Thomas Busch wrote:
On 20/06/2012 13:35, Thomas Busch wrote:
The reason I'm asking is that the following bug
https://rt.cpan.org/Public/Bug/Display.html?id=69866
hasn't been solved and is still causing Internal Server
Error's on
a lot of mod_perl installation.
I see you've got a suggested patch there, so there's a good
chance that
someone will pick that up - if noone does it by the weekend, I'll
try to
pick it up myself.
Joe, you seemingly addressed this in r748782 and then intentionally put
it back in r748790 - you touched the exact test case which would deal
with the a cookie that looked like Cookie: foo=bar;foo2=test;blabla.
Any recollections of why you put it back?
Issac
How to compiling/link/use Apache module that uses shared library?
Hi, I am (still) working on a module that uses another commercial shared object library (.so). I use the following to successfully build the module (currently, just tweaking mod_headers.c for testing): /apps/httpd/bin/apxs -L /apps/netpoint/AccessServerSDK/oblix/lib/ -c -i -a mod_headers.c The compile/link appears to work ok: [root@apachemodule build-mod_headers]# ./compile-mod-headers.sh /apps/httpd/build/libtool --silent --mode=compile gcc -prefer-pic -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g -O2 -pthread -I/a pps/httpd/include -I/apps/httpd/include -I/apps/httpd/include -c -o mod_headers.lo mod_headers.c touch mod_he aders.slo /apps/httpd/build/libtool --silent --mode=link gcc -o mod_headers.la -L/apps/netpoint/AccessServerSDK/oblix/lib/ -rpath /app s/httpd/modules -module -avoid-versionmod_headers.lo /apps/httpd/build/instdso.sh SH_LIBTOOL='/apps/httpd/build/libtool' mod_headers.la /apps/httpd/modules /apps/httpd/build/libtool --mode=install cp mod_headers.la /apps/httpd/modules/ cp .libs/mod_headers.so /apps/httpd/modules/mod_headers.so cp .libs/mod_headers.lai /apps/httpd/modules/mod_headers.la cp .libs/mod_headers.a /apps/httpd/modules/mod_headers.a chmod 644 /apps/httpd/modules/mod_headers.a ranlib /apps/httpd/modules/mod_headers.a PATH=$PATH:/sbin ldconfig -n /apps/httpd/modules -- Libraries have been installed in: /apps/httpd/modules If you ever happen to want to link against installed libraries in a given directory, LIBDIR, you must either use libtool, and specify the full pathname of the library, or use the `-LLIBDIR' flag during linking and do at least one of the following: - add LIBDIR to the `LD_LIBRARY_PATH' environment variable during execution - add LIBDIR to the `LD_RUN_PATH' environment variable during linking - use the `-Wl,--rpath -Wl,LIBDIR' linker flag - have your system administrator add LIBDIR to `/etc/ld.so.conf' See any operating system documentation about shared libraries for more information, such as the ld(1) and ld.so(8) manual pages. -- chmod 755 /apps/httpd/modules/mod_headers.so [activating module `headers' in /apps/httpd/conf/httpd.conf] However, when I try to start Apache, I get an error: [root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k start -X httpd: Syntax error on line 82 of /apps/httpd/conf/httpd.conf: Cannot load /apps/httpd/modules/mod_headers.so into server: /apps/httpd/modules/mod_headers.so: undefined symbol: ObResource_isProtected [root@apachemodule build-mod_headers]# I have LD_LIBRARY_PATH set to the path where the shared library is (same as the -L parameter above). When I run ldd on the .so, I get: [root@apachemodule build-mod_headers]# ldd -v /apps/httpd/modules/mod_headers.so libc.so.6 = /lib64/tls/libc.so.6 (0x002a95673000) /lib64/ld-linux-x86-64.so.2 (0x00552000) Version information: /apps/httpd/modules/mod_headers.so: libc.so.6 (GLIBC_2.3) = /lib64/tls/libc.so.6 libc.so.6 (GLIBC_2.2.5) = /lib64/tls/libc.so.6 /lib64/tls/libc.so.6: ld-linux-x86-64.so.2 (GLIBC_2.2.5) = /lib64/ld-linux-x86-64.so.2 ld-linux-x86-64.so.2 (GLIBC_2.3) = /lib64/ld-linux-x86-64.so.2 ld-linux-x86-64.so.2 (GLIBC_PRIVATE) = /lib64/ld-linux-x86-64.so.2 Shouldn't my shared library, libobaccess.so appear in the ldd output? I've tried using -l pointing directly to the .so, libobaccess.so, but when I do that, it says it can't find the .so: [root@apachemodule build-mod_headers]# ./compile-mod-headers.sh /apps/httpd/build/libtool --silent --mode=compile gcc -prefer-pic -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g -O2 -pthread -I/apps/httpd/include -I/apps/httpd/include -I/apps/httpd/include -c -o mod_headers.lo mod_headers.c touch mod_headers.slo /apps/httpd/build/libtool --silent --mode=link gcc -o mod_headers.la -l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so -rpath /apps/httpd/modules -module -avoid-versionmod_headers.lo /usr/bin/ld: cannot find -l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so collect2: ld returned 1 exit status apxs:Error: Command failed with rc=65536 At this point, I don't quite understand why Apache is failing to start... Can anyone help? Thanks, Jim
Re: How to compiling/link/use Apache module that uses shared library?
On 2012-06-21 19:47, oh...@cox.net wrote: I've tried using -l pointing directly to the .so, libobaccess.so, but when I do that, it says it can't find the .so: [root@apachemodule build-mod_headers]# ./compile-mod-headers.sh /apps/httpd/build/libtool --silent --mode=compile gcc -prefer-pic -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g -O2 -pthread -I/apps/httpd/include -I/apps/httpd/include -I/apps/httpd/include -c -o mod_headers.lo mod_headers.c touch mod_headers.slo /apps/httpd/build/libtool --silent --mode=link gcc -o mod_headers.la -l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so -rpath /apps/httpd/modules -module -avoid-versionmod_headers.lo /usr/bin/ld: cannot find -l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so collect2: ld returned 1 exit status apxs:Error: Command failed with rc=65536 Try -lobaccess S
Re: How to compiling/link/use Apache module that uses shared library?
Jim,
Have you looked at the LoadFile directive, sometime that can be of use for
third party libraries.
http://httpd.apache.org/docs/2.4/mod/mod_so.html#loadfile
/Ant
On 21 June 2012 20:19, oh...@cox.net wrote:
Sorin Manolache sor...@gmail.com wrote:
On 2012-06-21 19:47, oh...@cox.net wrote:
I've tried using -l pointing directly to the .so, libobaccess.so,
but when I do that, it says it can't find the .so:
[root@apachemodule build-mod_headers]# ./compile-mod-headers.sh
/apps/httpd/build/libtool --silent --mode=compile gcc -prefer-pic
-DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g -O2 -pthread
-I/apps/httpd/include -I/apps/httpd/include
-I/apps/httpd/include -c -o mod_headers.lo mod_headers.c touch
mod_headers.slo
/apps/httpd/build/libtool --silent --mode=link gcc -o
mod_headers.la -l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so
-rpath /apps/httpd/modules -module -avoid-versionmod_headers.lo
/usr/bin/ld: cannot find
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so
collect2: ld returned 1 exit status
apxs:Error: Command failed with rc=65536
Try -lobaccess
S
Sorin,
I was able to get Apache to start, kind of, using the apxs I posted, but
adding LoadFile directives to the Apache httpd.conf, to load libobaccess.so.
Now, when I run apachectl -t, it says OK, but when I try to actually
start Apache, I get a segfault (see below). The thing is, I have a bunch
of printfs in almost every function in mod_headers.c, so I could see what
functions are being called, and it looks like the segfault is occurring
even before it gets to any of the code parts that I've tweaked (vs.
original mod_headers.c):
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k
start -X
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
I tried running strace, and got (the ending of the strace):
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {0x432cc0, [], SA_RESTORER, 0x351432e300}, {SIG_DFL},
8) = 0
wait4(-1, [{WIFSIGNALED(s) WTERMSIG(s) == SIGSEGV}], 0, NULL) = 11711
fstat(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 5), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983bf000
open(/usr/share/locale/locale.alias, O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2528, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983c
read(3, # Locale name alias data base.\n#..., 4096) = 2528
read(3, , 4096) = 0
close(3)= 0
munmap(0x2a983c, 4096) = 0
open(/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No
such file or directory)
write(2, /apps/httpd/bin/apachectl: l...,
83/apps/httpd/bin/apachectl: line 78: 11711 Segmentation fault
$HTTPD $ARGV
) = 83
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, 0x7fbfffed64, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn(0x)= 0
rt_sigaction(SIGINT, {SIG_DFL}, {0x432cc0, [], SA_RESTORER, 0x351432e300},
8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
read(255, \nexit $ERROR\n\n, 3420)= 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
exit_group(139) = ?
I'll try to do the apxs with -lobccess and post back...
Jim
Re: How to compiling/link/use Apache module that uses shared library?
oh...@cox.net wrote:
Sorin Manolache sor...@gmail.com wrote:
On 2012-06-21 19:47, oh...@cox.net wrote:
I've tried using -l pointing directly to the .so, libobaccess.so, but
when I do that, it says it can't find the .so:
[root@apachemodule build-mod_headers]# ./compile-mod-headers.sh
/apps/httpd/build/libtool --silent --mode=compile gcc -prefer-pic
-DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g -O2 -pthread
-I/apps/httpd/include -I/apps/httpd/include
-I/apps/httpd/include -c -o mod_headers.lo mod_headers.c touch
mod_headers.slo
/apps/httpd/build/libtool --silent --mode=link gcc -o mod_headers.la
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so -rpath
/apps/httpd/modules -module -avoid-versionmod_headers.lo
/usr/bin/ld: cannot find
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so
collect2: ld returned 1 exit status
apxs:Error: Command failed with rc=65536
Try -lobaccess
S
Sorin,
I was able to get Apache to start, kind of, using the apxs I posted, but
adding LoadFile directives to the Apache httpd.conf, to load libobaccess.so.
Now, when I run apachectl -t, it says OK, but when I try to actually
start Apache, I get a segfault (see below). The thing is, I have a bunch of
printfs in almost every function in mod_headers.c, so I could see what
functions are being called, and it looks like the segfault is occurring even
before it gets to any of the code parts that I've tweaked (vs. original
mod_headers.c):
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k start
-X
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
I tried running strace, and got (the ending of the strace):
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {0x432cc0, [], SA_RESTORER, 0x351432e300}, {SIG_DFL}, 8)
= 0
wait4(-1, [{WIFSIGNALED(s) WTERMSIG(s) == SIGSEGV}], 0, NULL) = 11711
fstat(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 5), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983bf000
open(/usr/share/locale/locale.alias, O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2528, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983c
read(3, # Locale name alias data base.\n#..., 4096) = 2528
read(3, , 4096) = 0
close(3)= 0
munmap(0x2a983c, 4096) = 0
open(/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No
such file or directory)
open(/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No
such file or directory)
write(2, /apps/httpd/bin/apachectl: l...,
83/apps/httpd/bin/apachectl: line 78: 11711 Segmentation fault
$HTTPD $ARGV
) = 83
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, 0x7fbfffed64, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn(0x)= 0
rt_sigaction(SIGINT, {SIG_DFL}, {0x432cc0, [], SA_RESTORER, 0x351432e300}, 8)
= 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
read(255, \nexit $ERROR\n\n, 3420)= 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
exit_group(139) = ?
I'll try to do the apxs with -lobccess and post back...
Jim
Sorin,
I tried the apxs with both the -L pointing to the directory and -lobaccess, and
the apxs worked, plus I don't need the LoadFile directive in Apache httpd.conf.
However, I still get a segfault when I try to start Apache :(...
Jim
Re: How to compiling/link/use Apache module that uses shared library?
On Thu, Jun 21, 2012 at 8:43 PM, oh...@cox.net wrote: I tried that, which allowed me to start Apache, but am getting a segfault. Run it through gdb and inspect the backtrace. Compiling with debug symbols and optimizations disabled (-g -O0) will help.
Re: How to compiling/link/use Apache module that uses shared library?
oh...@cox.net wrote:
Sorin Manolache sor...@gmail.com wrote:
On 2012-06-21 19:47, oh...@cox.net wrote:
I've tried using -l pointing directly to the .so, libobaccess.so, but
when I do that, it says it can't find the .so:
[root@apachemodule build-mod_headers]# ./compile-mod-headers.sh
/apps/httpd/build/libtool --silent --mode=compile gcc -prefer-pic
-DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g -O2 -pthread
-I/apps/httpd/include -I/apps/httpd/include
-I/apps/httpd/include -c -o mod_headers.lo mod_headers.c touch
mod_headers.slo
/apps/httpd/build/libtool --silent --mode=link gcc -o mod_headers.la
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so -rpath
/apps/httpd/modules -module -avoid-versionmod_headers.lo
/usr/bin/ld: cannot find
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so
collect2: ld returned 1 exit status
apxs:Error: Command failed with rc=65536
Try -lobaccess
S
Sorin,
I was able to get Apache to start, kind of, using the apxs I posted, but
adding LoadFile directives to the Apache httpd.conf, to load libobaccess.so.
Now, when I run apachectl -t, it says OK, but when I try to actually
start Apache, I get a segfault (see below). The thing is, I have a bunch of
printfs in almost every function in mod_headers.c, so I could see what
functions are being called, and it looks like the segfault is occurring even
before it gets to any of the code parts that I've tweaked (vs. original
mod_headers.c):
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k start
-X
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
I tried running strace, and got (the ending of the strace):
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {0x432cc0, [], SA_RESTORER, 0x351432e300}, {SIG_DFL}, 8)
= 0
wait4(-1, [{WIFSIGNALED(s) WTERMSIG(s) == SIGSEGV}], 0, NULL) = 11711
fstat(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 5), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983bf000
open(/usr/share/locale/locale.alias, O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2528, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983c
read(3, # Locale name alias data base.\n#..., 4096) = 2528
read(3, , 4096) = 0
close(3)= 0
munmap(0x2a983c, 4096) = 0
open(/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No
such file or directory)
open(/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No
such file or directory)
write(2, /apps/httpd/bin/apachectl: l...,
83/apps/httpd/bin/apachectl: line 78: 11711 Segmentation fault
$HTTPD $ARGV
) = 83
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, 0x7fbfffed64, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn(0x)= 0
rt_sigaction(SIGINT, {SIG_DFL}, {0x432cc0, [], SA_RESTORER, 0x351432e300}, 8)
= 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
read(255, \nexit $ERROR\n\n, 3420)= 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
exit_group(139) = ?
I'll try to do the apxs with -lobccess and post back...
Jim
Hi,
It looks like just including the .so in the apxs command is enough to cause the
segfault, even if I remove all references to the functions in the .so from my
module code.
Is there something else I need to do when using my module that uses external
.so files?
Jim
Re: How to compiling/link/use Apache module that uses shared library?
oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolache sor...@gmail.com wrote:
On 2012-06-21 19:47, oh...@cox.net wrote:
I've tried using -l pointing directly to the .so, libobaccess.so, but
when I do that, it says it can't find the .so:
[root@apachemodule build-mod_headers]# ./compile-mod-headers.sh
/apps/httpd/build/libtool --silent --mode=compile gcc -prefer-pic
-DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g -O2 -pthread
-I/apps/httpd/include -I/apps/httpd/include
-I/apps/httpd/include -c -o mod_headers.lo mod_headers.c touch
mod_headers.slo
/apps/httpd/build/libtool --silent --mode=link gcc -o
mod_headers.la
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so -rpath
/apps/httpd/modules -module -avoid-versionmod_headers.lo
/usr/bin/ld: cannot find
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so
collect2: ld returned 1 exit status
apxs:Error: Command failed with rc=65536
Try -lobaccess
S
Sorin,
I was able to get Apache to start, kind of, using the apxs I posted, but
adding LoadFile directives to the Apache httpd.conf, to load libobaccess.so.
Now, when I run apachectl -t, it says OK, but when I try to actually
start Apache, I get a segfault (see below). The thing is, I have a bunch
of printfs in almost every function in mod_headers.c, so I could see what
functions are being called, and it looks like the segfault is occurring
even before it gets to any of the code parts that I've tweaked (vs.
original mod_headers.c):
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k
start -X
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
I tried running strace, and got (the ending of the strace):
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {0x432cc0, [], SA_RESTORER, 0x351432e300}, {SIG_DFL},
8) = 0
wait4(-1, [{WIFSIGNALED(s) WTERMSIG(s) == SIGSEGV}], 0, NULL) = 11711
fstat(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 5), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983bf000
open(/usr/share/locale/locale.alias, O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2528, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983c
read(3, # Locale name alias data base.\n#..., 4096) = 2528
read(3, , 4096) = 0
close(3)= 0
munmap(0x2a983c, 4096) = 0
open(/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No
such file or directory)
write(2, /apps/httpd/bin/apachectl: l...,
83/apps/httpd/bin/apachectl: line 78: 11711 Segmentation fault
$HTTPD $ARGV
) = 83
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, 0x7fbfffed64, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn(0x)= 0
rt_sigaction(SIGINT, {SIG_DFL}, {0x432cc0, [], SA_RESTORER, 0x351432e300},
8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
read(255, \nexit $ERROR\n\n, 3420)= 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
exit_group(139) = ?
I'll try to do the apxs with -lobccess and post back...
Jim
Hi,
It looks like just including the .so in the apxs command is enough to cause
the segfault, even if I remove all references to the functions in the .so
from my module code.
Is there something else I need to do
Re: How to compiling/link/use Apache module that uses shared library?
On 2012-06-21 22:04, oh...@cox.net wrote: Ben Noordhuis i...@bnoordhuis.nl wrote: On Thu, Jun 21, 2012 at 8:43 PM, oh...@cox.net wrote: I tried that, which allowed me to start Apache, but am getting a segfault. Run it through gdb and inspect the backtrace. Compiling with debug symbols and optimizations disabled (-g -O0) will help. Sorin, The apxs already has -g and -O2 looks like. How do I change that to -O0? Or, do I just run the gcc compile manually? Try adding -Wc,-O0 -Wc,-g -Wc,-fno-inline -Wl,-g to your apxs command line. Also how do I run it through gdb, since apachectl is a script? You don't run apachectl, you run the apache binary. gdb Then in gdb type: file /path/to/your/httpd_or_apache2 set args -d /path/to/your/server_root_dir -f /path/to/your/conf/file -X If apachectl sets some environment variables first, which are then used in the conf file (as in the standard debian installation) then you'll have to set them manually in gdb, e.g. set environment APACHE_RUN_USER www-data set environment APACHE_RUN_GROUP www-data Last, type run For example, on my debian I'd do file /usr/sbin/apache2 set args -d /etc/apache2 -f /etc/apache2/apache2.conf -X And a couple of set environments and then run. S Sorry for the questions, but not too familiar with this stuff :(... Jim
Re: How to compiling/link/use Apache module that uses shared library?
Joe Lewis j...@joe-lewis.com wrote:
On 6/21/12 1:40 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.com wrote:
On 2012-06-21 19:47, oh...@cox.net wrote:
I've tried using -l pointing directly to the .so, libobaccess.so, but
when I do that, it says it can't find the .so:
[root@apachemodule build-mod_headers]# ./compile-mod-headers.sh
/apps/httpd/build/libtool --silent --mode=compile gcc -prefer-pic
-DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g -O2 -pthread
-I/apps/httpd/include -I/apps/httpd/include
-I/apps/httpd/include -c -o mod_headers.lo mod_headers.c touch
mod_headers.slo
/apps/httpd/build/libtool --silent --mode=link gcc -o mod_headers.la
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so -rpath
/apps/httpd/modules -module -avoid-versionmod_headers.lo
/usr/bin/ld: cannot find
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so
collect2: ld returned 1 exit status
apxs:Error: Command failed with rc=65536
Try -lobaccess
S
Sorin,
I was able to get Apache to start, kind of, using the apxs I posted, but
adding LoadFile directives to the Apache httpd.conf, to load
libobaccess.so.
Now, when I run apachectl -t, it says OK, but when I try to actually
start Apache, I get a segfault (see below). The thing is, I have a bunch
of printfs in almost every function in mod_headers.c, so I could see what
functions are being called, and it looks like the segfault is occurring
even before it gets to any of the code parts that I've tweaked (vs.
original mod_headers.c):
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k
start -X
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
I tried running strace, and got (the ending of the strace):
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {0x432cc0, [], SA_RESTORER, 0x351432e300}, {SIG_DFL},
8) = 0
wait4(-1, [{WIFSIGNALED(s) WTERMSIG(s) == SIGSEGV}], 0, NULL) = 11711
fstat(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 5), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983bf000
open(/usr/share/locale/locale.alias, O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2528, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983c
read(3, # Locale name alias data base.\n#..., 4096) = 2528
read(3, , 4096) = 0
close(3)= 0
munmap(0x2a983c, 4096) = 0
open(/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en_US/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1
ENOENT (No such file or directory)
open(/usr/share/locale/en/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No
such file or directory)
write(2, /apps/httpd/bin/apachectl: l...,
83/apps/httpd/bin/apachectl: line 78: 11711 Segmentation fault
$HTTPD $ARGV
) = 83
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, 0x7fbfffed64, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn(0x)= 0
rt_sigaction(SIGINT, {SIG_DFL}, {0x432cc0, [], SA_RESTORER, 0x351432e300},
8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
read(255, \nexit $ERROR\n\n, 3420)= 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
exit_group(139) = ?
I'll try to do the apxs with -lobccess and post back...
Jim
Hi,
It looks like just including the .so in the apxs command is enough to cause
the segfault, even if I remove all references to the functions in the .so
from my module code.
Is there something else I need to do when
Re: How to compiling/link/use Apache module that uses shared library?
On 2012-06-21 22:22, oh...@cox.net wrote:
[root@apachemodule bin]# gdb httpd
GNU gdb Red Hat Linux (6.3.0.0-1.162.el4rh)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type show copying to see the conditions.
There is absolutely no warranty for GDB. Type show warranty for details.
This GDB was configured as x86_64-redhat-linux-gnu...Using host libthread_db library
/lib64/tls/libthread_db.so.1.
(gdb) b header_post_config
Function header_post_config not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (header_post_config) pending.
(gdb) run -X
Starting program: /apps/httpd/bin/httpd -X
[Thread debugging using libthread_db enabled]
[New Thread 182897612000 (LWP 8741)]
Breakpoint 2 at 0x2a97a69060: file mod_headers.c, line 1026.
Pending breakpoint header_post_config resolved
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
[Switching to Thread 182897612000 (LWP 8741)]
Breakpoint 2, header_post_config (pconf=0x573138, plog=0x5a52c8,
ptemp=0x5a72d8, s=0x59d3a8) at mod_headers.c:1026
1026printf(In header_post_config\n);
(gdb) s
1025{
(gdb) s
1026printf(In header_post_config\n);
(gdb) n
In header_post_config
1027header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
(gdb) n
1029}
(gdb) n
0x004360c7 in ap_run_post_config (pconf=0x573138, plog=0x5a52c8,
ptemp=0x5a72d8, s=0x59d3a8) at config.c:91
91 AP_IMPLEMENT_HOOK_RUN_ALL(int, post_config,
(gdb) n
Program received signal SIGSEGV, Segmentation fault.
0x003518d6c1e1 in BN_num_bits () from /lib64/libcrypto.so.4
(gdb)
I have no idea what the above means :( But it looks like something blew up
in libcrypto?
Jim
Navigate the help of gdb (help, help data, help running).
Check the bt (backtrace), up, and down commands. From your
segfault point in libcrypto you can go up the stack until you reach in
one of your functions.
When you reached your code after several ups, do a print of the
variables (especially pointers that you suspect they are null but
shouldn't be null) that could have triggered the error.
S
Re: How to compiling/link/use Apache module that uses shared library?
Sorin Manolache sor...@gmail.com wrote:
On 2012-06-21 22:04, oh...@cox.net wrote:
Ben Noordhuis i...@bnoordhuis.nl wrote:
On Thu, Jun 21, 2012 at 8:43 PM, oh...@cox.net wrote:
I tried that, which allowed me to start Apache, but am getting a segfault.
Run it through gdb and inspect the backtrace. Compiling with debug
symbols and optimizations disabled (-g -O0) will help.
Sorin,
The apxs already has -g and -O2 looks like. How do I change that to
-O0? Or, do I just run the gcc compile manually?
Try adding
-Wc,-O0 -Wc,-g -Wc,-fno-inline -Wl,-g
to your apxs command line.
Also how do I run it through gdb, since apachectl is a script?
You don't run apachectl, you run the apache binary.
gdb
Then in gdb type:
file /path/to/your/httpd_or_apache2
set args -d /path/to/your/server_root_dir -f /path/to/your/conf/file -X
If apachectl sets some environment variables first, which are then used
in the conf file (as in the standard debian installation) then you'll
have to set them manually in gdb, e.g.
set environment APACHE_RUN_USER www-data
set environment APACHE_RUN_GROUP www-data
Last, type
run
For example, on my debian I'd do
file /usr/sbin/apache2
set args -d /etc/apache2 -f /etc/apache2/apache2.conf -X
And a couple of set environments and then run.
S
Sorry for the questions, but not too familiar with this stuff :(...
Jim
Hi Sorin,
Thanks for that. I did as you suggested (again, just to be sure) and got:
(gdb) b header_post_config
Function header_post_config not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (header_post_config) pending.
(gdb)
Function header_post_config not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 2 (header_post_config) pending.
(gdb) run -d /apps/httpd -f /apps/httpd/conf/httpd.conf -X
Starting program: /apps/httpd/bin/httpd -d /apps/httpd -f
/apps/httpd/conf/httpd.conf -X
[Thread debugging using libthread_db enabled]
[New Thread 182897612000 (LWP 9669)]
Breakpoint 3 at 0x2a97a69070: file mod_headers.c, line 1026.
Pending breakpoint header_post_config resolved
Note: breakpoint 3 also set at pc 0x2a97a69070.
Breakpoint 4 at 0x2a97a69070: file mod_headers.c, line 1026.
Pending breakpoint header_post_config resolved
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
[Switching to Thread 182897612000 (LWP 9669)]
Breakpoint 3, header_post_config (pconf=0x573138, plog=0x5a52c8,
ptemp=0x5a72d8, s=0x59d3a8) at mod_headers.c:1026
1026printf(In header_post_config\n);
(gdb) s
1025{
(gdb) n
1026printf(In header_post_config\n);
(gdb) n
In header_post_config
1027header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
(gdb) n
1029}
(gdb) n
0x004360c7 in ap_run_post_config (pconf=0x573138, plog=0x5a52c8,
ptemp=0x5a72d8, s=0x59d3a8) at config.c:91
91 AP_IMPLEMENT_HOOK_RUN_ALL(int, post_config,
(gdb) n
Program received signal SIGSEGV, Segmentation fault.
0x003518d6c1e1 in BN_num_bits () from /lib64/libcrypto.so.4
Looks like it blew up the same place as earlier...
Jim
Re: How to compiling/link/use Apache module that uses shared library?
And I forgot to say: run gdb in some sort of environment where you see your current source code line and a couple of surrounding lines. You could achieve this with the list command, but I prefer running gdb in emacs and let emacs do the nice listing of source code in a different panel. S
Re: How to compiling/link/use Apache module that uses shared library?
Sorin Manolache sor...@gmail.com wrote:
And I forgot to say: run gdb in some sort of environment where you see
your current source code line and a couple of surrounding lines. You
could achieve this with the list command, but I prefer running gdb in
emacs and let emacs do the nice listing of source code in a different panel.
S
Here's the function from my source. It's the original from mod_headers.c, plus
my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
ap_run_log_transaction() appears to run prior to request finishing
Hello, I am developing a module which extends mod_log_config and provides a custom log format for CPU time elapsed per request. In order to do this, once the request reaches the ap_run_log_transaction() hook, the Apache worker must apr_proc_wait() for any child processes related to the request to finish. Most of the time, the module functions without a problem and requests are logged with accurate CPU time. However, some requests hang. I have not been able to reproduce the issue in testing, but I have been able to observe the deadlock on live servers. For example, using mod_suphp, some PHP requests will launch and begin processing, but prior to completing and writing out its entire response, the Apache worker moves to the ap_run_log_transaction() hook. The deadlock occurs when the logging function that my module uses begins its apr_proc_wait(). The PHP process will the be stuck in a write(), presumably waiting for Apache to read() more data, and the Apache child will be stuck in a waitpid(), waiting for the PHP process to terminate. Both processes hang indefinitely. Their backtraces are as follows: PHP process: #0 0x63569ff13930 in __write_nocancel () from /lib64/libpthread.so.0 #1 0x0073cf48 in sapi_cgibin_single_write (str=value optimized out, str_length=320) at /home/cpeasyapache/src/php-5.2.17/sapi/cgi/cgi_main.c:270 #2 sapi_cgibin_ub_write (str=value optimized out, str_length=320) at /home/cpeasyapache/src/php-5.2.17/sapi/cgi/cgi_main.c:286 #3 0x00688204 in php_ub_body_write_no_header (str=0x1 Address 0x1 out of bounds, str_length=18340616) at /home/cpeasyapache/src/php-5.2.17/main/output.c:684 #4 0x006bb1b7 in zend_print_zval_ex (write_func=0x6771f0 php_body_write_wrapper, expr=0x11b7b78, indent=value optimized out) at /home/cpeasyapache/src/php-5.2.17/Zend/zend.c:294 #5 0x006de48b in ZEND_ECHO_SPEC_CONST_HANDLER (execute_data=0x718e57d8fc90) at /home/cpeasyapache/src/php-5.2.17/Zend/zend_vm_execute.h:1500 #6 0x006d95bc in execute (op_array=0x1177198) at /home/cpeasyapache/src/php-5.2.17/Zend/zend_vm_execute.h:92 #7 0x63569dda890f in zend_oe () from /usr/local/Zend/lib/Optimizer-3.3.9/php-5.2.x/ZendOptimizer.so #8 0x006b9b0d in zend_execute_scripts (type=8, retval=value optimized out, file_count=3) at /home/cpeasyapache/src/php-5.2.17/Zend/zend.c:1134 #9 0x00676e3d in php_execute_script (primary_file=0x718e57d92430) at /home/cpeasyapache/src/php-5.2.17/main/main.c:2036 #10 0x0073daff in main (argc=2, argv=0x718e57d92608) at /home/cpeasyapache/src/php-5.2.17/sapi/cgi/cgi_main.c:1999 Apache thread: #0 0x71742e3bf75f in waitpid () from /lib64/libpthread.so.0 #1 0x71742ec3d912 in apr_proc_wait () from /usr/local/apache/lib/libapr-1.so.0 #2 0x71742bf0f9a6 in log_cpu_elapsed () from /usr/local/apache/modules/mod_logcpu.so #3 0x0046d754 in process_item () #4 0x0046d968 in config_log_transaction () #5 0x0046db03 in multi_log_transaction () #6 0x0043937d in ap_run_log_transaction () #7 0x004b44f8 in ap_process_request () #8 0x004b0ba2 in ap_process_http_async_connection () #9 0x0045238c in ap_run_process_connection () #10 0x004ddc50 in process_socket () #11 0x004de9c1 in worker_thread () #12 0x71742ec3e0a5 in dummy_worker () from /usr/local/apache/lib/libapr-1.so.0 #13 0x71742e3b777d in start_thread () from /lib64/libpthread.so.0 #14 0x71742df2925d in clone () from /lib64/libc.so.6 Why is this occurring, and couldn't this be affecting other logging functions such as those that count bytes communicated? Is there a way to ensure that the request has completely finished, and if not, yield to the PHP process and return to the logging function once it actually has finished? I suspect this may be due to faulty logic in check_pipeline_flush(), which is called prior to ap_run_log_transaction() in ap_process_request() (modules/http/http_request.c). This function appears to have been completely removed in 2.4 and replaced with a similar check_pipeline(). I've not yet tested my module with 2.4; I am developing on 2.2 and need this module to be compatible with 2.2. -Paul
Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.com wrote:
And I forgot to say: run gdb in some sort of environment where you see
your current source code line and a couple of surrounding lines. You
could achieve this with the list command, but I prefer running gdb in
emacs and let emacs do the nice listing of source code in a different panel.
S
Here's the function from my source. It's the original from mod_headers.c, plus
my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where my
libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about checking ldconfig
-p. I still don't understand why, but I'm just glad that I can get past this piece
so now I can debug my module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
Joe Lewis j...@joe-lewis.com wrote:
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.com wrote:
And I forgot to say: run gdb in some sort of environment where you see
your current source code line and a couple of surrounding lines. You
could achieve this with the list command, but I prefer running gdb in
emacs and let emacs do the nice listing of source code in a different
panel.
S
Here's the function from my source. It's the original from mod_headers.c,
plus my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where my
libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about checking
ldconfig -p. I still don't understand why, but I'm just glad that I can
get past this piece so now I can debug my module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
Hi,
Sorry to report, but my earlier report was a false positive :)...
I forgot that the mod_headers.c that I was doing the earlier testing with had
all references to the libobaccess.so removed :(!!
So, I'm still stuck with basically the same problem, now, working with my
full code, with the calls in it:
- If I compile with -L and -l, Apache segfaults when it starts
- If I compile without -L and -l, then I get undefined symbol errors when I
try to start Apache, e.g.:
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k start -X
httpd: Syntax error on line 84 of /apps/httpd/conf/httpd.conf: Cannot load
/apps/httpd/modules/mod_headers.so into server:
/apps/httpd/modules/mod_headers.so: undefined symbol: ObResource_isProtected
That ObResource_isProtected should be a symbol in libobaccess.so, and in
fact, if I do nm --dynamic, I get:
[root@apachemodule build-mod_headers]# nm --dynamic
/apps/netpoint/lib64/libobaccess.so | grep ObResource_isProtected
000a6d80 T ObResource_isProtected
[root@apachemodule build-mod_headers]#
I'm *assuming* that the reason for the undefined symbol error is that
libobaccess.so is actually not being loaded, but then when I try to load
libobaccess.so, either via -L and -l in the apxs, or using LoadFile in
httpd.conf, I get the segfault (same gdb info, BTW).
Catch-22?
Sorry for the false alarm :(!!
Jim
Re: UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
oh...@cox.net wrote:
Joe Lewis j...@joe-lewis.com wrote:
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.com wrote:
And I forgot to say: run gdb in some sort of environment where you see
your current source code line and a couple of surrounding lines. You
could achieve this with the list command, but I prefer running gdb in
emacs and let emacs do the nice listing of source code in a different
panel.
S
Here's the function from my source. It's the original from
mod_headers.c, plus my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where my
libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about checking
ldconfig -p. I still don't understand why, but I'm just glad that I
can get past this piece so now I can debug my module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
Hi,
Sorry to report, but my earlier report was a false positive :)...
I forgot that the mod_headers.c that I was doing the earlier testing with had
all references to the libobaccess.so removed :(!!
So, I'm still stuck with basically the same problem, now, working with my
full code, with the calls in it:
- If I compile with -L and -l, Apache segfaults when it starts
- If I compile without -L and -l, then I get undefined symbol errors when I
try to start Apache, e.g.:
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k start
-X
httpd: Syntax error on line 84 of /apps/httpd/conf/httpd.conf: Cannot
load /apps/httpd/modules/mod_headers.so into server:
/apps/httpd/modules/mod_headers.so: undefined symbol:
ObResource_isProtected
That ObResource_isProtected should be a symbol in libobaccess.so, and in
fact, if I do nm --dynamic, I get:
[root@apachemodule build-mod_headers]# nm --dynamic
/apps/netpoint/lib64/libobaccess.so | grep ObResource_isProtected
000a6d80 T ObResource_isProtected
[root@apachemodule build-mod_headers]#
I'm *assuming* that the reason for the undefined symbol error is that
libobaccess.so is actually not being loaded, but then when I try to load
libobaccess.so, either via -L and -l in the apxs, or using LoadFile in
httpd.conf, I get the segfault (same gdb info, BTW).
Catch-22?
Sorry for the false alarm :(!!
Jim
Hi,
Also, BTW, now that I have the ld.so.conf.d setup, I can do ldconfig -p and
get:
[root@apachemodule build-mod_headers]# ldconfig -p | grep libob
libobaccess.so (libc6,x86-64) = /apps/netpoint/lib64/libobaccess.so
The library TYPE (libc6) is the same with other .so files that are use, e.g.,
the libssl*.so, when I list them with ldconfig.
Sill don't understand why loading that libobaccess.so causes Apache to segfault
:(...
Jim
Re: UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
Joe Lewis j...@joe-lewis.com wrote:
On 6/21/12 6:46 PM, oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.com wrote:
And I forgot to say: run gdb in some sort of environment where you see
your current source code line and a couple of surrounding lines. You
could achieve this with the list command, but I prefer running gdb in
emacs and let emacs do the nice listing of source code in a different
panel.
S
Here's the function from my source. It's the original from
mod_headers.c, plus my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where my
libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about checking
ldconfig -p. I still don't understand why, but I'm just glad that I
can get past this piece so now I can debug my module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
Hi,
Sorry to report, but my earlier report was a false positive :)...
I forgot that the mod_headers.c that I was doing the earlier testing with
had all references to the libobaccess.so removed :(!!
So, I'm still stuck with basically the same problem, now, working with my
full code, with the calls in it:
- If I compile with -L and -l, Apache segfaults when it starts
- If I compile without -L and -l, then I get undefined symbol errors when
I try to start Apache, e.g.:
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k
start -X
httpd: Syntax error on line 84 of /apps/httpd/conf/httpd.conf: Cannot
load /apps/httpd/modules/mod_headers.so into server:
/apps/httpd/modules/mod_headers.so: undefined symbol:
ObResource_isProtected
That ObResource_isProtected should be a symbol in libobaccess.so, and in
fact, if I do nm --dynamic, I get:
[root@apachemodule build-mod_headers]# nm --dynamic
/apps/netpoint/lib64/libobaccess.so | grep ObResource_isProtected
000a6d80 T ObResource_isProtected
[root@apachemodule build-mod_headers]#
I'm *assuming* that the reason for the undefined symbol error is that
libobaccess.so is actually not being loaded, but then when I try to load
libobaccess.so, either via -L and -l in the apxs, or using LoadFile in
httpd.conf, I get the segfault (same gdb info, BTW).
Catch-22?
Sorry for the false alarm :(!!
Jim
Not a catch-22. The -L and -l specify linker options when assembling
the code. The ldconfig is a run-time thing. If you are getting the
stderr messages, you are making it all the way into your library. I'd
suggest commenting out the following line and see if you get farther :
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
That should tell you if the problem is the ssl_var_lookup.
Joe
--
http://www.silverhawk.net/
Hi,
Thanks for the suggestion. I just tried what you suggested, and got a segfault
when I started Apache with the modified module.
Jim
Re: UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
On Fri, Jun 22, 2012 at 3:32 AM, oh...@cox.net wrote: Program received signal SIGSEGV, Segmentation fault. 0x003518d6c1e1 in BN_num_bits () from /lib64/libcrypto.so.4 So, it's actually blowing up in BN_num_bits() in /lib64/libcrypto.so.4? Type `bt full` and you'll get a backtrace + locals. That should tell you where the error originates from and maybe why it happens.
Re: UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
On 6/21/12 7:32 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 6:46 PM, oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.comwrote:
And I forgot to say: run gdb in some sort of environment where you see
your current source code line and a couple of surrounding lines. You
could achieve this with the list command, but I prefer running gdb in
emacs and let emacs do the nice listing of source code in a different panel.
S
Here's the function from my source. It's the original from mod_headers.c, plus
my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where my
libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about checking ldconfig
-p. I still don't understand why, but I'm just glad that I can get past this piece
so now I can debug my module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
Hi,
Sorry to report, but my earlier report was a false positive :)...
I forgot that the mod_headers.c that I was doing the earlier testing with had
all references to the libobaccess.so removed :(!!
So, I'm still stuck with basically the same problem, now, working with my
full code, with the calls in it:
- If I compile with -L and -l, Apache segfaults when it starts
- If I compile without -L and -l, then I get undefined symbol errors when I
try to start Apache, e.g.:
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k start -X
httpd: Syntax error on line 84 of /apps/httpd/conf/httpd.conf: Cannot load
/apps/httpd/modules/mod_headers.so into server:
/apps/httpd/modules/mod_headers.so: undefined symbol: ObResource_isProtected
That ObResource_isProtected should be a symbol in libobaccess.so, and in fact, if I do
nm --dynamic, I get:
[root@apachemodule build-mod_headers]# nm --dynamic /apps/netpoint/lib64/libobaccess.so |
grep ObResource_isProtected
000a6d80 T ObResource_isProtected
[root@apachemodule build-mod_headers]#
I'm *assuming* that the reason for the undefined symbol error is that
libobaccess.so is actually not being loaded, but then when I try to load libobaccess.so,
either via -L and -l in the apxs, or using LoadFile in httpd.conf, I get the segfault
(same gdb info, BTW).
Catch-22?
Sorry for the false alarm :(!!
Jim
Not a catch-22. The -L and -l specify linker options when assembling
the code. The ldconfig is a run-time thing. If you are getting the
stderr messages, you are making it all the way into your library. I'd
suggest commenting out the following line and see if you get farther :
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
That should tell you if the problem is the ssl_var_lookup.
Joe
--
http://www.silverhawk.net/
Hi,
Thanks for the suggestion. I just tried what you suggested, and got a segfault
when I started Apache with the modified module.
Jim
Hi,
As a reminder, here's the gdb with the library loaded:
(gdb) b header_post_config
Function header_post_config not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (header_post_config) pending.
(gdb) run -d /apps/httpd/ -f /apps/httpd/conf/httpd.conf
Starting program: /apps/httpd/bin/httpd -d /apps/httpd/ -f
/apps/httpd/conf/httpd.conf
[Thread debugging using libthread_db enabled]
[New Thread 182897610272 (LWP 11317)]
Breakpoint 2 at 0x2a9751ea90: file mod_headers.c, line 1121.
Pending breakpoint header_post_config resolved
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
[Switching to Thread 182897610272 (LWP 11317)]
Breakpoint 2, header_post_config (pconf=0x573138, plog=0x5a52c8,
ptemp=0x5a72d8, s=0x59d3a8) at mod_headers.c:1121
1121printf(In header_post_config\n);
(gdb) n
1120{
(gdb) n
1121printf(In header_post_config\n);
(gdb) n
In header_post_config
1122header_ssl_lookup =
Re: UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
Joe Lewis j...@joe-lewis.com wrote:
On 6/21/12 7:32 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 6:46 PM, oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.comwrote:
And I forgot to say: run gdb in some sort of environment where you
see
your current source code line and a couple of surrounding lines. You
could achieve this with the list command, but I prefer running gdb
in
emacs and let emacs do the nice listing of source code in a
different panel.
S
Here's the function from my source. It's the original from
mod_headers.c, plus my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where my
libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about checking
ldconfig -p. I still don't understand why, but I'm just glad that I
can get past this piece so now I can debug my module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
Hi,
Sorry to report, but my earlier report was a false positive :)...
I forgot that the mod_headers.c that I was doing the earlier testing
with had all references to the libobaccess.so removed :(!!
So, I'm still stuck with basically the same problem, now, working with
my full code, with the calls in it:
- If I compile with -L and -l, Apache segfaults when it starts
- If I compile without -L and -l, then I get undefined symbol errors
when I try to start Apache, e.g.:
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k
start -X
httpd: Syntax error on line 84 of /apps/httpd/conf/httpd.conf:
Cannot load /apps/httpd/modules/mod_headers.so into server:
/apps/httpd/modules/mod_headers.so: undefined symbol:
ObResource_isProtected
That ObResource_isProtected should be a symbol in libobaccess.so, and
in fact, if I do nm --dynamic, I get:
[root@apachemodule build-mod_headers]# nm --dynamic
/apps/netpoint/lib64/libobaccess.so | grep ObResource_isProtected
000a6d80 T ObResource_isProtected
[root@apachemodule build-mod_headers]#
I'm *assuming* that the reason for the undefined symbol error is that
libobaccess.so is actually not being loaded, but then when I try to load
libobaccess.so, either via -L and -l in the apxs, or using LoadFile in
httpd.conf, I get the segfault (same gdb info, BTW).
Catch-22?
Sorry for the false alarm :(!!
Jim
Not a catch-22. The -L and -l specify linker options when assembling
the code. The ldconfig is a run-time thing. If you are getting the
stderr messages, you are making it all the way into your library. I'd
suggest commenting out the following line and see if you get farther :
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
That should tell you if the problem is the ssl_var_lookup.
Joe
--
http://www.silverhawk.net/
Hi,
Thanks for the suggestion. I just tried what you suggested, and got a
segfault when I started Apache with the modified module.
Jim
Hi,
As a reminder, here's the gdb with the library loaded:
(gdb) b header_post_config
Function header_post_config not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (header_post_config) pending.
(gdb) run -d /apps/httpd/ -f /apps/httpd/conf/httpd.conf
Starting program: /apps/httpd/bin/httpd -d /apps/httpd/ -f
/apps/httpd/conf/httpd.conf
[Thread debugging using libthread_db enabled]
[New Thread 182897610272 (LWP 11317)]
Breakpoint 2 at 0x2a9751ea90: file mod_headers.c, line 1121.
Pending breakpoint header_post_config resolved
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
[Switching to Thread 182897610272 (LWP 11317)]
Re: UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewis j...@joe-lewis.com wrote:
On 6/21/12 7:32 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 6:46 PM, oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.comwrote:
And I forgot to say: run gdb in some sort of environment where
you see
your current source code line and a couple of surrounding lines.
You
could achieve this with the list command, but I prefer running
gdb in
emacs and let emacs do the nice listing of source code in a
different panel.
S
Here's the function from my source. It's the original from
mod_headers.c, plus my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup =
APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to
do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where
my libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about
checking ldconfig -p. I still don't understand why, but I'm
just glad that I can get past this piece so now I can debug my
module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for
the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
Hi,
Sorry to report, but my earlier report was a false positive :)...
I forgot that the mod_headers.c that I was doing the earlier testing
with had all references to the libobaccess.so removed :(!!
So, I'm still stuck with basically the same problem, now, working
with my full code, with the calls in it:
- If I compile with -L and -l, Apache segfaults when it starts
- If I compile without -L and -l, then I get undefined symbol
errors when I try to start Apache, e.g.:
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl
-k start -X
httpd: Syntax error on line 84 of /apps/httpd/conf/httpd.conf:
Cannot load /apps/httpd/modules/mod_headers.so into server:
/apps/httpd/modules/mod_headers.so: undefined symbol:
ObResource_isProtected
That ObResource_isProtected should be a symbol in libobaccess.so,
and in fact, if I do nm --dynamic, I get:
[root@apachemodule build-mod_headers]# nm --dynamic
/apps/netpoint/lib64/libobaccess.so | grep ObResource_isProtected
000a6d80 T ObResource_isProtected
[root@apachemodule build-mod_headers]#
I'm *assuming* that the reason for the undefined symbol error is
that libobaccess.so is actually not being loaded, but then when I
try to load libobaccess.so, either via -L and -l in the apxs, or
using LoadFile in httpd.conf, I get the segfault (same gdb info,
BTW).
Catch-22?
Sorry for the false alarm :(!!
Jim
Not a catch-22. The -L and -l specify linker options when assembling
the code. The ldconfig is a run-time thing. If you are getting the
stderr messages, you are making it all the way into your library. I'd
suggest commenting out the following line and see if you get farther :
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
That should tell you if the problem is the ssl_var_lookup.
Joe
--
http://www.silverhawk.net/
Hi,
Thanks for the suggestion. I just tried what you suggested, and got a
segfault when I started Apache with the modified module.
Jim
Hi,
As a reminder, here's the gdb with the library loaded:
(gdb) b header_post_config
Function header_post_config not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (header_post_config) pending.
(gdb) run -d /apps/httpd/ -f /apps/httpd/conf/httpd.conf
Starting program: /apps/httpd/bin/httpd -d /apps/httpd/ -f
/apps/httpd/conf/httpd.conf
[Thread debugging using libthread_db enabled]
[New Thread 182897610272 (LWP 11317)]
Breakpoint 2 at 0x2a9751ea90: file mod_headers.c, line 1121.
Pending breakpoint header_post_config resolved
mod_headers-jl
Re: UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
On 6/21/12 9:39 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 7:32 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 6:46 PM, oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.comwrote:
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.com wrote:
And I forgot to say: run gdb in some sort of environment where you see
your current source code line and a couple of surrounding lines. You
could achieve this with the list command, but I prefer running gdb in
emacs and let emacs do the nice listing of source code in a different panel.
S
Here's the function from my source. It's the original from mod_headers.c, plus
my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where my
libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about checking ldconfig
-p. I still don't understand why, but I'm just glad that I can get past this piece
so now I can debug my module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
Hi,
Sorry to report, but my earlier report was a false positive :)...
I forgot that the mod_headers.c that I was doing the earlier testing with had
all references to the libobaccess.so removed :(!!
So, I'm still stuck with basically the same problem, now, working with my
full code, with the calls in it:
- If I compile with -L and -l, Apache segfaults when it starts
- If I compile without -L and -l, then I get undefined symbol errors when I
try to start Apache, e.g.:
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k start -X
httpd: Syntax error on line 84 of /apps/httpd/conf/httpd.conf: Cannot load
/apps/httpd/modules/mod_headers.so into server:
/apps/httpd/modules/mod_headers.so: undefined symbol: ObResource_isProtected
That ObResource_isProtected should be a symbol in libobaccess.so, and in fact, if I do
nm --dynamic, I get:
[root@apachemodule build-mod_headers]# nm --dynamic /apps/netpoint/lib64/libobaccess.so |
grep ObResource_isProtected
000a6d80 T ObResource_isProtected
[root@apachemodule build-mod_headers]#
I'm *assuming* that the reason for the undefined symbol error is that
libobaccess.so is actually not being loaded, but then when I try to load libobaccess.so,
either via -L and -l in the apxs, or using LoadFile in httpd.conf, I get the segfault
(same gdb info, BTW).
Catch-22?
Sorry for the false alarm :(!!
Jim
Not a catch-22. The -L and -l specify linker options when assembling
the code. The ldconfig is a run-time thing. If you are getting the
stderr messages, you are making it all the way into your library. I'd
suggest commenting out the following line and see if you get farther :
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
That should tell you if the problem is the ssl_var_lookup.
Joe
--
http://www.silverhawk.net/
Hi,
Thanks for the suggestion. I just tried what you suggested, and got a segfault
when I started Apache with the modified module.
Jim
Hi,
As a reminder, here's the gdb with the library loaded:
(gdb) b header_post_config
Function header_post_config not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (header_post_config) pending.
(gdb) run -d /apps/httpd/ -f /apps/httpd/conf/httpd.conf
Starting program: /apps/httpd/bin/httpd -d /apps/httpd/ -f
/apps/httpd/conf/httpd.conf
[Thread debugging using libthread_db enabled]
[New Thread 182897610272 (LWP 11317)]
Breakpoint 2 at 0x2a9751ea90: file mod_headers.c, line 1121.
Pending breakpoint header_post_config resolved
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
[Switching to Thread 182897610272 (LWP 11317)]
Breakpoint 2, header_post_config (pconf=0x573138, plog=0x5a52c8,
ptemp=0x5a72d8, s=0x59d3a8) at mod_headers.c:1121
1121printf(In header_post_config\n);
Re: UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
Joe Lewis j...@joe-lewis.com wrote:
On 6/21/12 9:39 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 7:32 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 6:46 PM, oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.comwrote:
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.com wrote:
And I forgot to say: run gdb in some sort of environment where
you see
your current source code line and a couple of surrounding lines.
You
could achieve this with the list command, but I prefer running
gdb in
emacs and let emacs do the nice listing of source code in a
different panel.
S
Here's the function from my source. It's the original from
mod_headers.c, plus my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec
*s)
{
printf(In header_post_config\n);
header_ssl_lookup =
APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to
do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where
my libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about
checking ldconfig -p. I still don't understand why, but I'm
just glad that I can get past this piece so now I can debug my
module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for
the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
Hi,
Sorry to report, but my earlier report was a false positive :)...
I forgot that the mod_headers.c that I was doing the earlier testing
with had all references to the libobaccess.so removed :(!!
So, I'm still stuck with basically the same problem, now, working
with my full code, with the calls in it:
- If I compile with -L and -l, Apache segfaults when it starts
- If I compile without -L and -l, then I get undefined symbol
errors when I try to start Apache, e.g.:
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl
-k start -X
httpd: Syntax error on line 84 of /apps/httpd/conf/httpd.conf:
Cannot load /apps/httpd/modules/mod_headers.so into server:
/apps/httpd/modules/mod_headers.so: undefined symbol:
ObResource_isProtected
That ObResource_isProtected should be a symbol in libobaccess.so,
and in fact, if I do nm --dynamic, I get:
[root@apachemodule build-mod_headers]# nm --dynamic
/apps/netpoint/lib64/libobaccess.so | grep ObResource_isProtected
000a6d80 T ObResource_isProtected
[root@apachemodule build-mod_headers]#
I'm *assuming* that the reason for the undefined symbol error is
that libobaccess.so is actually not being loaded, but then when I
try to load libobaccess.so, either via -L and -l in the apxs, or
using LoadFile in httpd.conf, I get the segfault (same gdb info,
BTW).
Catch-22?
Sorry for the false alarm :(!!
Jim
Not a catch-22. The -L and -l specify linker options when assembling
the code. The ldconfig is a run-time thing. If you are getting the
stderr messages, you are making it all the way into your library. I'd
suggest commenting out the following line and see if you get farther :
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
That should tell you if the problem is the ssl_var_lookup.
Joe
--
http://www.silverhawk.net/
Hi,
Thanks for the suggestion. I just tried what you suggested, and got a
segfault when I started Apache with the modified module.
Jim
Hi,
As a reminder, here's the gdb with the library loaded:
(gdb) b header_post_config
Function header_post_config not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (header_post_config) pending.
(gdb) run -d /apps/httpd/ -f /apps/httpd/conf/httpd.conf
Starting program: /apps/httpd/bin/httpd -d /apps/httpd/ -f
/apps/httpd/conf/httpd.conf
[Thread debugging using libthread_db enabled]
[New Thread 182897610272 (LWP 11317)]
Breakpoint 2 at 0x2a9751ea90: file mod_headers.c, line 1121.
Pending breakpoint header_post_config resolved
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In
Re: UNSOLVED was Re: SOLVED was Re: How to compiling/link/use Apache module that uses shared library?
On 6/21/12 10:02 PM, oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 9:39 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 7:32 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.comwrote:
On 6/21/12 6:46 PM, oh...@cox.net wrote:
Joe Lewisj...@joe-lewis.com wrote:
On 6/21/12 5:49 PM, oh...@cox.net wrote:
oh...@cox.net wrote:
Sorin Manolachesor...@gmail.com wrote:
And I forgot to say: run gdb in some sort of environment where you see
your current source code line and a couple of surrounding lines. You
could achieve this with the list command, but I prefer running gdb in
emacs and let emacs do the nice listing of source code in a different panel.
S
Here's the function from my source. It's the original from mod_headers.c, plus
my printf:
static int header_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
printf(In header_post_config\n);
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
return OK;
}
Jim
Hi,
I was able to get the segfault to go away. Here's what I had to do:
- Created /etc/ld.so.conf.d/my.conf, and added the directory where my
libobaccess.so was
- Run 'ldconfig' to activate.
- In the apxs command, DON'T include the -L and -l arguments
After that, Apache appears to start ok, without segfault :)!!
Thanks for all of the great help, esp. the suggestion about checking ldconfig
-p. I still don't understand why, but I'm just glad that I can get past this piece
so now I can debug my module :)...
Later,
Jim
I'm just glad this list is as good as it is!
FYI, the ldconfig is the dynamic linker control, and those
/etc/ld.so.conf.d files provide additional search directories for the
linker to check in when loading a library.
Joe
--
http://www.silverhawk.net/
Hi,
Sorry to report, but my earlier report was a false positive :)...
I forgot that the mod_headers.c that I was doing the earlier testing with had
all references to the libobaccess.so removed :(!!
So, I'm still stuck with basically the same problem, now, working with my
full code, with the calls in it:
- If I compile with -L and -l, Apache segfaults when it starts
- If I compile without -L and -l, then I get undefined symbol errors when I
try to start Apache, e.g.:
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k start -X
httpd: Syntax error on line 84 of /apps/httpd/conf/httpd.conf: Cannot load
/apps/httpd/modules/mod_headers.so into server:
/apps/httpd/modules/mod_headers.so: undefined symbol: ObResource_isProtected
That ObResource_isProtected should be a symbol in libobaccess.so, and in fact, if I do
nm --dynamic, I get:
[root@apachemodule build-mod_headers]# nm --dynamic /apps/netpoint/lib64/libobaccess.so |
grep ObResource_isProtected
000a6d80 T ObResource_isProtected
[root@apachemodule build-mod_headers]#
I'm *assuming* that the reason for the undefined symbol error is that
libobaccess.so is actually not being loaded, but then when I try to load libobaccess.so,
either via -L and -l in the apxs, or using LoadFile in httpd.conf, I get the segfault
(same gdb info, BTW).
Catch-22?
Sorry for the false alarm :(!!
Jim
Not a catch-22. The -L and -l specify linker options when assembling
the code. The ldconfig is a run-time thing. If you are getting the
stderr messages, you are making it all the way into your library. I'd
suggest commenting out the following line and see if you get farther :
header_ssl_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
That should tell you if the problem is the ssl_var_lookup.
Joe
--
http://www.silverhawk.net/
Hi,
Thanks for the suggestion. I just tried what you suggested, and got a segfault
when I started Apache with the modified module.
Jim
Hi,
As a reminder, here's the gdb with the library loaded:
(gdb) b header_post_config
Function header_post_config not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (header_post_config) pending.
(gdb) run -d /apps/httpd/ -f /apps/httpd/conf/httpd.conf
Starting program: /apps/httpd/bin/httpd -d /apps/httpd/ -f
/apps/httpd/conf/httpd.conf
[Thread debugging using libthread_db enabled]
[New Thread 182897610272 (LWP 11317)]
Breakpoint 2 at 0x2a9751ea90: file mod_headers.c, line 1121.
Pending breakpoint header_post_config resolved
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
[Switching to Thread 182897610272 (LWP 11317)]
Breakpoint 2, header_post_config (pconf=0x573138, plog=0x5a52c8,
Re: md5crypt passwords
On Wed, Jun 20, 2012 at 1:25 PM, Nick Edwards nick.z.edwa...@gmail.com wrote: Hello, I posted this to users list last week but no-one bit, so I'm trying here. With md5crypt no longer recommended for use by its author, will Apache soon support sha256/sha512 in basic authentication via MySQL. I understand the apr version is different to plain md5crypt, but it is based on the same thing from what I can tell, so its pointless upgrading our database passwords to use sha512 if Apache's still the weak link. All admin scripts run in perl, and we are currently doing this with apache_md5_crypt($password); using Crypt::PasswdMD5 For Mail and FTP, we are _now_ successfully using crypt($password, '$6$' . $16charsalt) for sha512, be nice if Apache basic auth would too! Apache currently only offers SHA1 which is about as secure (can be read as , as hopeless as) MD5. Can the project devs/team leaders indicate if there are future plans to mnprove the basic auth security methods up to SHA512? This thread is all over the place! So, a summary... * SHA-1 is not as broken as MD5 - no way to generate collisions has been found that is practical. * MD5 is still pre-image resistant even though it is possible to generate collisions. This means that repeated applications of MD5 are also pre-image resistant. * The threat against md5crypt is the same as it has always been: rainbow tables. The current attacks have not changed this. * htpasswd uses an 8 byte salt with 6 bits per byte. So, a rainbow table will have 2^48 entries per password. Assuming you can somehow manage 1 byte per entry, that's still nearly 300 TB per password. So, I'd say there's no need for panic, but there's also no reason that I can see to not move to a more modern scheme. Then the question is: what scheme? Here are some design criteria I think would be useful. 1. Use something from the SHA-2 family - SHA-512 would seem fine to me. 2. Use a very large salt - disk space is not at a premium for password stores! 3. Use quite a lot of rounds,. 4. Use something that is hard to optimise in hardware (ideally).
Re: md5crypt passwords
On 21/06/2012 12:40, Ben Laurie wrote: 4. Use something that is hard to optimise in hardware (ideally). And what about massive sites that need the crypto HW to manage the concurrent logins? Yes, you're making it harder on the hackers, but also potentially on our users. ...Or did I just put my foot in my crypto-clueless-mouth? Issac
Re: md5crypt passwords
On Thu, Jun 21, 2012 at 10:53 AM, Issac Goldstand mar...@beamartyr.net wrote: On 21/06/2012 12:40, Ben Laurie wrote: 4. Use something that is hard to optimise in hardware (ideally). And what about massive sites that need the crypto HW to manage the concurrent logins? I have never come across a site where login causes significant load. They may exist, but I figure they can do their own thing for passwords... Yes, you're making it harder on the hackers, but also potentially on our users. ...Or did I just put my foot in my crypto-clueless-mouth? Issac
Re: md5crypt passwords
On Thu, 2012-06-21 at 10:40 +0100, Ben Laurie wrote: 4. Use something that is hard to optimise in hardware (ideally). 5. Only hire web developers who know what they're doing, who know what security is, and how to audit their code :) If they cant get the database, then it wouldn't mater if they were in *gulp* plain text attachment: face-smile.png signature.asc Description: This is a digitally signed message part
Re: md5crypt passwords
On Thu, 2012-06-21 at 10:57 +0100, Ben Laurie wrote: On Thu, Jun 21, 2012 at 10:53 AM, Issac Goldstand mar...@beamartyr.net wrote: On 21/06/2012 12:40, Ben Laurie wrote: 4. Use something that is hard to optimise in hardware (ideally). And what about massive sites that need the crypto HW to manage the concurrent logins? I have never come across a site where login causes significant load. That's because all the commonly used methods are cryptographic hash's that are designed for speed, unlike password hash's, designed to makes things crawl for the norti peoples. signature.asc Description: This is a digitally signed message part
Re: md5crypt passwords
* Reindl Harald wrote:
i only needed to point out that weakhash(weakhash(weakhash()))
does not result in stronghash() no matter how often you wrap
I'm not sure, why the topic drifted there anyway. md5crypt does not actually
nest hashes like this.
nd
--
package Hacker::Perl::Another::Just;print
qq~@{[reverse split/::/ =__PACKAGE__]}~;
# André Malo # http://www.perlig.de #
Re: How to compiling/link/use Apache module that uses shared library?
Sorin Manolache sor...@gmail.com wrote:
On 2012-06-21 19:47, oh...@cox.net wrote:
I've tried using -l pointing directly to the .so, libobaccess.so, but
when I do that, it says it can't find the .so:
[root@apachemodule build-mod_headers]# ./compile-mod-headers.sh
/apps/httpd/build/libtool --silent --mode=compile gcc -prefer-pic
-DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g -O2 -pthread
-I/apps/httpd/include -I/apps/httpd/include
-I/apps/httpd/include -c -o mod_headers.lo mod_headers.c touch
mod_headers.slo
/apps/httpd/build/libtool --silent --mode=link gcc -o mod_headers.la
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so -rpath
/apps/httpd/modules -module -avoid-versionmod_headers.lo
/usr/bin/ld: cannot find
-l/apps/netpoint/AccessServerSDK/oblix/lib/libobaccess.so
collect2: ld returned 1 exit status
apxs:Error: Command failed with rc=65536
Try -lobaccess
S
Sorin,
I was able to get Apache to start, kind of, using the apxs I posted, but adding
LoadFile directives to the Apache httpd.conf, to load libobaccess.so.
Now, when I run apachectl -t, it says OK, but when I try to actually start
Apache, I get a segfault (see below). The thing is, I have a bunch of printfs
in almost every function in mod_headers.c, so I could see what functions are
being called, and it looks like the segfault is occurring even before it gets
to any of the code parts that I've tweaked (vs. original mod_headers.c):
[root@apachemodule build-mod_headers]# /apps/httpd/bin/apachectl -k start -X
mod_headers-jl V0.09 - start calling OAM API
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
I tried running strace, and got (the ending of the strace):
In register_hooks
In create_headers_dir_config
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In create_headers_dir_config
In header_cmd
In header_inout_cmd
In parse_format_tag
In parse_misc_string
In header_post_config
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {0x432cc0, [], SA_RESTORER, 0x351432e300}, {SIG_DFL}, 8) = 0
wait4(-1, [{WIFSIGNALED(s) WTERMSIG(s) == SIGSEGV}], 0, NULL) = 11711
fstat(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 5), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983bf000
open(/usr/share/locale/locale.alias, O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2528, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a983c
read(3, # Locale name alias data base.\n#..., 4096) = 2528
read(3, , 4096) = 0
close(3)= 0
munmap(0x2a983c, 4096) = 0
open(/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en_US/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No
such file or directory)
open(/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT
(No such file or directory)
open(/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No
such file or directory)
open(/usr/share/locale/en/LC_MESSAGES/libc.mo, O_RDONLY) = -1 ENOENT (No such
file or directory)
write(2, /apps/httpd/bin/apachectl: l...,
83/apps/httpd/bin/apachectl: line 78: 11711 Segmentation fault $HTTPD
$ARGV
) = 83
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, 0x7fbfffed64, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn(0x)= 0
rt_sigaction(SIGINT, {SIG_DFL}, {0x432cc0, [], SA_RESTORER, 0x351432e300}, 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
read(255, \nexit $ERROR\n\n, 3420)= 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
exit_group(139) = ?
I'll try to do the apxs with -lobccess and post back...
Jim
Empty cookies [Was Re: libapreq2 co-maintainer]
On 20/06/2012 14:19, Thomas Busch wrote: On 20/06/2012 13:35, Thomas Busch wrote: The reason I'm asking is that the following bug https://rt.cpan.org/Public/Bug/Display.html?id=69866 hasn't been solved and is still causing Internal Server Error's on a lot of mod_perl installation. I see you've got a suggested patch there, so there's a good chance that someone will pick that up - if noone does it by the weekend, I'll try to pick it up myself. Joe, you seemingly addressed this in r748782 and then intentionally put it back in r748790 - you touched the exact test case which would deal with the a cookie that looked like Cookie: foo=bar;foo2=test;blabla. Any recollections of why you put it back? Issac
Re: md5crypt passwords
Hi Stefan, On 6/21/12, Stefan Fritsch s...@sfritsch.de wrote: On Wed, 20 Jun 2012, Nick Edwards wrote: I posted this to users list last week but no-one bit, so I'm trying here. With md5crypt no longer recommended for use by its author, will Apache soon support sha256/sha512 in basic authentication via MySQL. Note that it does not really matter that much which hash algorithm is used. The number of rounds is more important. APR-MD5 ($apr1$) does 1000 times recursive md5 (which is 1000 times more secure in terms of brute forcing than plain md5). We should switch to something that needs more processing time so that it is more difficult to brute force. I understand the apr version is different to plain md5crypt, but it is based on the same thing from what I can tell, so its pointless upgrading our database passwords to use sha512 if Apache's still the weak link. All admin scripts run in perl, and we are currently doing this with apache_md5_crypt($password); using Crypt::PasswdMD5 For Mail and FTP, we are _now_ successfully using crypt($password, '$6$' . $16charsalt) for sha512, be nice if Apache basic auth would too! APR passes everything it doesn't know to the system's crypt() function. So chances are good that using $6$... already works for you. However, there is currently no way to create such hashes with htpasswd. Thanks, it does work, I did not realise this, because some time ago I tried to use our default md5cryprt password used for ftp and mail, but Apache did not like it, after much googling I found reference saying it was different and needed apr1, if it falls back why would that have failed for us? or is this fallback only something new? I would be for importing some state of the art scheme from some BSD. Good schemes allow to change the number of rounds without loosing backward compatibility. I guess bcrypt is a candidate. This new algorithm should then be the new default. Don't know much about bcrypt sorry. Thanks again for your help, all is now happy
Re: LimitRequestFieldSize: spurious note about max value?
On Tue, 2012-06-19 at 15:42 +1000, Bojan Smojver wrote: Docs contain this note for LimitRequestFieldSize directive: noteUnder normal conditions, the value should not be changed from the default. Also, you can't set this higher than 8190 without modifying the source code and rebuilding./note I was under the impression that the hardcoded upper limit was removed in r149269. No? So, nobody will mind if I remove that comment from the docs then? I think I have commit there, although never really tried... -- Bojan
