subject:"SSH"

Re: scripting rsync ssh port issue

2008-04-04 Thread Paul Slootman

On Fri 04 Apr 2008, Sterling Windmill wrote:

 I am modifying a bash script of mine to issue an rsync to a remote host with 
 a non-standard ssh port.
 
 Unfortunately, no combination of bashisms seems to make it work properly.
 
 Code snippet:
 
 ...
 
 RSYNC_OPTIONS=-aH --delete --numeric-ids -e \'ssh -p 2292\'
 RSYNC=ionice -c3 rsync $RSYNC_OPTIONS

Nested quotations usually do something else than you'd expect...

 $SOURCE=/some/dir
 [EMAIL PROTECTED]:/some/dir

Are you sure about the above lines? I'd lose the $ in the 1st column.
(Or was that your shell prompt...)


 $RSYNC --progress  $SOURCE $DST

That will probably present the arguments to rsync differently then
expected. A simple test:

$ cat showargs.sh
#!/bin/sh

for i; do
echo ARG: $i
done


$ RSYNC_OPTIONS=-aH --delete --numeric-ids -e \'ssh -p 2292\'
$ RSYNC=ionice -c3 rsync $RSYNC_OPTIONS
$ SOURCE=/some/dir
$ [EMAIL PROTECTED]:/some/dir
$ ./showargs.sh $RSYNC --progress  $SOURCE $DST
ARG: ionice
ARG: -c3
ARG: rsync
ARG: -aH
ARG: --delete
ARG: --numeric-ids
ARG: -e
ARG: \'ssh
ARG: -p
ARG: 2292\'
ARG: --progress
ARG: /some/dir
ARG: 

(With $DEST instead of $DST it shows [EMAIL PROTECTED]:/some/dir as the
last ARG, instead of the empty one now.)

I wish you much pleasure in trying to solve this in this way :-)
I'd create a ssh-2292 commmand that looks like:

#!/bin/sh
exec /usr/bin/ssh -p 2292 $@

and pass that to the -e option.

Alternatively you could create an entry for that host in ~/.ssh/config
and put the port in there.


Paul Slootman
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Re: scripting rsync ssh port issue

2008-04-04 Thread Matt McCutchen

Paul has addressed the errant dollar signs, the misspelled $DST, and two
possible workarounds for the quoting issue, but I would like to explain
the quoting issue a bit further.

On Fri, 2008-04-04 at 11:23 -0400, Sterling Windmill wrote:
 RSYNC_OPTIONS=-aH --delete --numeric-ids -e \'ssh -p 2292\'
 RSYNC=ionice -c3 rsync $RSYNC_OPTIONS
  
 $SOURCE=/some/dir
 [EMAIL PROTECTED]:/some/dir
  
 $RSYNC --progress  $SOURCE $DST

 Missing trailing-' in remote-shell command.
 rsync error: syntax or usage error (code 1) at main.c(364)
 [sender=3.0.0]
  
 If I paste the command directly into a command line, the command works
 properly.

First, get rid of the backslashes in $RSYNC_OPTIONS because they are
being taken literally; single quotes need no escaping inside double
quotes.

Second, when bash expands a variable like $RSYNC, it takes quotes in the
variable's value literally; they do not protect spaces in the expanded
value from word splitting.  Thus, bash is splitting your -e value into
three pieces, the first and last of which contain unmatched single
quotes, hence the rsync error.

You could fix this by using eval instead of word-splitting expansion,
but that would be fragile with respect to shell metacharacters in the
arguments to be passed to rsync.  Alternatively...

 I've also tried taking the advice mentioned here and using an array
 instead of a variable, but to no avail:
  
 http://wooledge.org:8000/BashFAQ/050

Arrays are generally the best solution, but it takes some care to use
them correctly.  Here's your script rewritten to use arrays:

---

RSYNC_OPTIONS=(-aH --delete --numeric-ids -e 'ssh -p 2292')
RSYNC=(ionice -c3 rsync [EMAIL PROTECTED])

SOURCE=/some/dir
[EMAIL PROTECTED]:/some/dir

: [EMAIL PROTECTED] --progress $SOURCE $DEST

---

Matt


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when rsync is called with -4 or -6, pass that on to ssh [PATCH]

2008-03-04 Thread Paul Slootman

If rsync is called with -4 or -6, that option is currently ignored when
ssh is used as the transport.  The attached patch is a stab at passing
the option on to the ssh process. It checks that the remote shell
program is something that looks like ssh. Perhaps that could be done
cleaner...


Paul Slootman

--- a/main.c2008-03-01 21:01:41.0 +0100
+++ b/main.c2008-03-04 18:55:10.933488013 +0100
@@ -82,6 +82,7 @@
 #ifdef ICONV_OPTION
 extern iconv_t ic_send;
 #endif
+extern int default_af_hint;
 
 uid_t our_uid;
 int local_server = 0;
@@ -381,6 +382,23 @@
*t++ = '\0';
}
 
+#ifdef AF_INET
+if (default_af_hint == AF_INET) {
+if (strncmp(cmd, ssh, 3) == 0 || strstr(cmd, /ssh) != 
NULL) {
+/* we're using ssh so we can add a -4 option */
+args[argc++] = -4;
+}
+}
+#endif
+#ifdef AF_INET6
+if (default_af_hint == AF_INET6) {
+if (strncmp(cmd, ssh, 3) == 0 || strstr(cmd, /ssh) != 
NULL) {
+/* we're using ssh so we can add a -6 option */
+args[argc++] = -6;
+}
+}
+#endif
+
/* check to see if we've already been given '-l user' in
 * the remote-shell command */
for (i = 0; i  argc-1; i++) {
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Re: rsync hangs when accessing through SSH (Leopard OS X)

2007-12-25 Thread Greg Loesch

Wayne Davison-2 wrote:

Try some basic things:

ssh [EMAIL PROTECTED] true

The above command should not output anything at all (excepting an ssh
password prompt, if applicable). If there is any output on stdout, you
need to disable whatever is generating that output so that rsync doesn't
get garbage trying to talk to the remote rsync.

This worked just fine

ssh [EMAIL PROTECTED] rsync --version

The above command should show you rsync's version. If it does not,
figure out where rsync is installed and try it with a full path. If a
full path works, use the --rsync-path=/path/rsync option when invoking
your client-side rsync. If there is no rsync on the remote system,
install it yourself.

..wayne..
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This, however, did the same thing that I'm having trouble with. Everything
just hangs.

Okay, this may lead to a whole other mess, but I'm sure it needs to be
addressed. I attempted to uninstall rsync and reinstall from scratch not too
long ago, and I apparently am missing some important files. I searched the
database regarding uninstalling rsync and followed what I found. I deleted
the three files I was told to delete, and rsync still runs... I installed
rsync using fink if that makes things different? I tried doing a Spotlight
search for rsync and basically deleted everything that I saw, and it still
runs. Obviously there are some files that aren't indexed by Spotlight that
are slipping under the radar. I feel like I'm in a big mess now...

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