CardiacPhase/Git/cmd/start-ssh-pageant.cmd

64 lines
2.7 KiB
Batchfile

@REM Do not use "echo off" to not affect any child calls.
@REM The goal of this script is to simplify launching `ssh-pageant` at
@REM logon, typically by dropping a shortcut into the Startup folder, so
@REM that Pageant (the PuTTY authentication agent) will always be
@REM accessible. No attempt is made to load SSH keys, since this is
@REM normally handled directly by Pageant, and no interactive shell
@REM will be launched.
@REM
@REM The `ssh-pageant` utility is launched with the `-r` (reuse socket)
@REM option, to ensure that only a single running incarnation (per user)
@REM will be required... instead of launching a separate process for
@REM every interactive Git Bash session. A side effect of this selection
@REM is that the SSH_AUTH_SOCK environment variable *must* be set prior
@REM to running this script, with the value specifying a unix-style socket
@REM path, and needs to be consistent for all git-related processes. The
@REM easiest way to do this is to set a persistent USER environment
@REM variable, which (under Windows 7) can be done via Control Panel
@REM under System / Advanced System Settings. A typical value would look
@REM similar to:
@REM
@REM SSH_AUTH_SOCK=/tmp/.ssh-pageant-USERNAME
@REM
@REM Enable extensions, the `verify` call is a trick from the setlocal help
@VERIFY other 2>nul
@SETLOCAL EnableDelayedExpansion
@IF ERRORLEVEL 1 (
@ECHO Unable to enable extensions
@GOTO failure
)
@REM Ensure that SSH_AUTH_SOCK is set
@if "x" == "x%SSH_AUTH_SOCK%" @(
@ECHO The SSH_AUTH_SOCK environment variable must be set prior to running this script. >&2
@ECHO This is typically configured as a persistent USER variable, using a MSYS2 path for >&2
@ECHO the ssh-pageant authentication socket as the value. Something similar to: >&2
@ECHO. >&2
@ECHO SSH_AUTH_SOCK=/tmp/.ssh-pageant-%USERNAME% >&2
@GOTO failure
)
@REM Start ssh-pageant if needed by git
@FOR %%i IN ("git.exe") DO @SET GIT=%%~$PATH:i
@IF EXIST "%GIT%" @(
@REM Get the ssh-pageant executable
@FOR %%i IN ("ssh-pageant.exe") DO @SET SSH_PAGEANT=%%~$PATH:i
@IF NOT EXIST "%SSH_PAGEANT%" @(
@FOR %%s IN ("%GIT%") DO @SET GIT_DIR=%%~dps
@FOR %%s IN ("!GIT_DIR!") DO @SET GIT_DIR=!GIT_DIR:~0,-1!
@FOR %%s IN ("!GIT_DIR!") DO @SET GIT_ROOT=%%~dps
@FOR %%s IN ("!GIT_ROOT!") DO @SET GIT_ROOT=!GIT_ROOT:~0,-1!
@FOR /D %%s in ("!GIT_ROOT!\usr\bin\ssh-pageant.exe") DO @SET SSH_PAGEANT=%%~s
@IF NOT EXIST "!SSH_PAGEANT!" @GOTO ssh-pageant-done
)
)
@REM Time to make the donuts!
@ECHO Starting ssh-pageant...
@FOR /f "usebackq tokens=1 delims=;" %%o in (`"%SSH_PAGEANT%" -qra %SSH_AUTH_SOCK%`) DO @ECHO %%o
:ssh-pageant-done
:failure