openssh bugs - Apr 2014 - [Bug 2220] New: Add uuid-style identifier for use with ControlPath

https://bugzilla.mindrot.org/show_bug.cgi?id=2220

            Bug ID: 2220
           Summary: Add uuid-style identifier for use with ControlPath
           Product: Portable OpenSSH
           Version: -current
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: ssh
          Assignee: unassigned-bugs at mindrot.org
          Reporter: mancha1 at zoho.com

Created attachment 2418
  --> https://bugzilla.mindrot.org/attachment.cgi?id=2418&action=edit
Enhancement patch

When combining %h, %r, and %p (recommended for uniqueness) in
ControlPath,
long remote usernames and/or hostnames can cause the expansion to bump
up
against UNIX_PATH_MAX.

This patch adds a uuid-style path component (%m) that expands to the
sha1 digest of the concatenation of the local host (%l) + remote host
(%h) + remote port (%p) + remote user (%r).

The token's expanded length is a fixed 40 characters and provides a
reasonable expectation of uniqueness.

Sample usage:

  ControlPath ~/.ssh/control-master/%m

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mancha <mancha1 at zoho.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2418|0                           |1
           is patch|                            |
   Attachment #2418|application/octet-stream    |text/plain
          mime type|                            |

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2418|0                           |1
        is obsolete|                            |
                 CC|                            |djm at mindrot.org
             Status|NEW                         |ASSIGNED
           Assignee|unassigned-bugs at mindrot.org |djm at mindrot.org

--- Comment #1 from Damien Miller <djm at mindrot.org> ---
Created attachment 2451
  --> https://bugzilla.mindrot.org/attachment.cgi?id=2451&action=edit
tweaked patch

We have a tohex() function that will format a binary blob as a hex
string, so we can use that here.

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |2226

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #2 from Damien Miller <djm at mindrot.org> ---
patch applied - will be in OpenSSH 6.7

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--- Comment #3 from mancha <mancha1 at zoho.com> ---
Nice improvements to the patch - thanks (didn't know about tohex).

Cheers.

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #4 from Damien Miller <djm at mindrot.org> ---
Close all bugs left open from 6.6 and 6.7 releases.

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