Permissions problem with mod_sftp

Hi Guys,
We've run into a curious problem with libssh2 (1.4.1) with users using proFTPD (1.3.4) and mod_sftp.  What
is happening is when we open a remote handle for *reading* like so:

remoteHandle = libssh2_sftp_open(session, file, LIBSSH2_FXF_READ, 0);

The server wipes out the file permissions.  I.e., sets them to 000.  According to the docs, if the file exists
on disk it should ignore the mode bits.  But it seems not to be the case.

We've tracked it back to the server config setting IgnoreSFTPUploadPerms, if this is set to yes,
everything is fine.  This seems like an pretty obvious server-side issue; *however* it works correctly
using openssh's sftp client.  

Before I continue tracking this down, do you guys have any ideas what the differences would be between
openssh's sftp implementation and libssh2 which would be causing this?

Thanks,
Will

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example ssh2: failed to connect

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Invitation to connect on LinkedIn

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Error Receiving a File SCP

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[PATCH] Corrected error checking on socket creation

From dd644ca2526e8e5cf64121f53664d2804600b325 Mon Sep 17 00:00:00 2001
From: Paulo Caetano <paulo.a.o.caetano@...>
Date: Wed, 23 May 2012 12:03:19 +0100
Subject: [PATCH] Corrected error checking on socket creation

---
 ssh2_multiexec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ssh2_multiexec.c b/ssh2_multiexec.c
index 18fe79b..5bc341f 100644
--- a/ssh2_multiexec.c
+++ b/ssh2_multiexec.c
@@ -218,7 +218,7 @@ int main(int argc, char *argv[])
      */
     sock = socket(AF_INET, SOCK_STREAM, 0);
 	
-	if (socket == -1)
+	if (sock == -1)
 		perror("Create socket");

     sin.sin_family = AF_INET;
--

-- 
1.7.10
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Understanding Key Orders

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[PATCH] Added LIBSSH2_ERROR_EAGAIN tests to nonblocking examples.

Hi again,

I've made the patch for all the nonblocking examples. Basically, I've
checked the libssh2 calls on each program and, if they can return
EAGAIN, make it loop until the return code is other than EAGAIN.

This is my first patch so please tell me if I did something wrong :)

Thanks.

--
Marta

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[PATCH] libgcrypt does not provide pkg-config support

 From 6b8a3edae23dc93cc02e6c9572d0796e338ddc4f Mon Sep 17 00:00:00 2001
From: Mark Brand <mabrand@...>
Date: Sat, 19 May 2012 10:40:36 +0200
Subject: [PATCH] libgcrypt does not provide pkg-config support

Commits 04692445d4a32430610ccf8c256e18245cbb3e06
and e887a8bd0f043fd49e9119756858e75e82dee504 add
'libgcrypt' to Requires.private of libssh2.pc
file, but libgcrypt does not provide a .pc file, so
this does not work.
---
  configure.ac |    1 -
  1 file changed, 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index aa9d397..0d35a27 100644
--- a/configure.ac
+++ b/configure.ac
@@ -102,7 +102,6 @@ fi
  # Look for libgcrypt
  if test "$ac_cv_libssl" != "yes" && test "$use_libgcrypt" != "no"; then
    AC_LIB_HAVE_LINKFLAGS([gcrypt], [], [#include <gcrypt.h>])
-  LIBSREQUIRED=libgcrypt
  fi

  AC_SUBST(LIBSREQUIRED)
-- 
1.7.9.2

From 6b8a3edae23dc93cc02e6c9572d0796e338ddc4f Mon Sep 17 00:00:00 2001
From: Mark Brand <mabrand@...>
Date: Sat, 19 May 2012 10:40:36 +0200
Subject: [PATCH] libgcrypt does not provide pkg-config support

Commits 04692445d4a32430610ccf8c256e18245cbb3e06
and e887a8bd0f043fd49e9119756858e75e82dee504 add
'libgcrypt' to Requires.private of libssh2.pc
file, but libgcrypt does not provide a .pc file, so
this does not work.
---
 configure.ac |    1 -
 1 file changed, 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index aa9d397..0d35a27 100644
--- a/configure.ac
+++ b/configure.ac
@@ -102,7 +102,6 @@ fi
 # Look for libgcrypt
 if test "$ac_cv_libssl" != "yes" && test "$use_libgcrypt" != "no"; then
   AC_LIB_HAVE_LINKFLAGS([gcrypt], [], [#include <gcrypt.h>])
-  LIBSREQUIRED=libgcrypt
 fi

 AC_SUBST(LIBSREQUIRED)
--

-- 
1.7.9.2

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ANNOUNCE: libssh2 1.4.2 is out!

Hi friends,

I just uploaded the 1.4.2 release, go get it from http://www.libssh2.org/

This release includes the following bugfixes:

  o Return LIBSSH2_ERROR_SOCKET_DISCONNECT on EOF when reading banner
  o userauth.c: fread() from public key file to correctly detect any errors
  o configure.ac: Add option to disable build of the example applications
  o Added 'Requires.private:' line to libssh2.pc
  o SFTP: filter off incoming "zombie" responses
  o gettimeofday: no need for a replacement under cygwin
  o SSH_MSG_CHANNEL_REQUEST: default to want_reply
  o win32/libssh2_config.h: Remove hardcoded #define LIBSSH2_HAVE_ZLIB

This release would not have looked like this without help, code, reports and
advice from friends like these:

  Alexander Lamaison, Rafael Kitover, Guenter Knauf, Peter Stuge,
  Oleksiy Zagorskyi

         Thanks! (and sorry if I forgot to mention someone)

--

-- 

  / daniel.haxx.se
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sftp functions leaking memory?

Hi,

Let's see if you can enlighten my day :)

A bit of background: I'm working with an embedded system[1] and I
needed a library to manage sftp transfers that need to be done
periodically, so I used libssh2. Everything was going smooth until I
realized the process was eating memory, around 2 MB a day. That's not
a big deal on a bigger system, but having only 64 MB of RAM, in my
case that is a problem.

I reviewed my code, and having not found any error, I tried to make
some measurements with one of the examples. I modified the non
blocking sftp example to operate in a loop (see attachment, if you
want to compile it you will have to change the pmemlog string to match
your system, and include the right libssh2_config.h). After 433
iterations, I made a graph of the heap size. The heap growth is almost
linear, and it does not seem to stabilize. Another interesting thing
is that the heap does not grow on each iteration. You can see the
details on the attached spreadsheet.

More data:
- I've already searched the list for something similar to this...
without success.
- I've tested this in libssh2-1.3.0, libssh2-1.4.1 and libssh2-1.4.2
(yesterdays' morning snapshot, the zombies thing gave me hope... )
- Compiled with libgcrypt 1.5.0 (also tried with openssl, the leak was
also present).
- My cross-compiler is a bit old, but I'm not allowed to use another
for now (In my paranoia I'm tempted to blame the compiler)
# arm-linux-gcc --v
Reading specs from /usr/local/lib/gcc-lib/arm-linux/3.3.2/specs
Configured with: ../configure --target=arm-linux --disable-shared
--with-headers=/home/gerg/new-wave.xscale/linux-2.4.x/include
--with-gnu-as --with-gnu-ld --enable-multilib
Thread model: posix
gcc version 3.3.2

If you have any idea on this, I will be very happy to read it. If not,
I will have to dive into the code to find an explanation for this...

Thank you very much!
--
Marta

[1] - http://www.artila.com/p_matrix.html#Matrix-500

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Unable to link with OpenSSL libraries under Cygwin

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