From 7e95c3b667a1b353f8275db886203f272bfcce34 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jes=C3=BAs?= <heckyel@hyperbola.info>
Date: Wed, 10 Feb 2021 13:52:52 -0500
Subject: first commit

---
 hyperterm/tools/ssh-agent.sh | 105 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 hyperterm/tools/ssh-agent.sh

(limited to 'hyperterm/tools/ssh-agent.sh')

diff --git a/hyperterm/tools/ssh-agent.sh b/hyperterm/tools/ssh-agent.sh
new file mode 100644
index 0000000..4c24ba5
--- /dev/null
+++ b/hyperterm/tools/ssh-agent.sh
@@ -0,0 +1,105 @@
+#!/bin/bash
+
+#------------
+# SSH-AGENT
+#------------
+function sshagent_start {
+
+    # clean previous ssh credentials
+    (rm -rf /tmp/ssh-* > /dev/null)
+
+    SSH_ENV="$HOME/.ssh/environment"
+    printf '\e[1;36m%s\e[m\n' "Initialising new SSH agent..."
+    ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
+    chmod 600 "${SSH_ENV}"
+    # shellcheck source=/dev/null
+    source "${SSH_ENV}" > /dev/null
+    ssh-add -t 5d
+    printf '\e[1;36m%s\e[m\n' "succeeded"
+}
+
+function sshagent_stop {
+
+    # clean previous ssh credentials
+    (rm -rf /tmp/ssh-* > /dev/null)
+
+    ssh-agent -k > /dev/null
+}
+
+function sshagent_findsockets {
+    find /tmp -uid "$(id -u)" -type s -name agent.\* 2>/dev/null
+}
+
+function sshagent_testsocket {
+    if [ ! -x "$(command -v ssh-add)" ] ; then
+        echo "ssh-add is not available; agent testing aborted"
+        return 1
+    fi
+
+    if [ X"$1" != X ] ; then
+        export SSH_AUTH_SOCK=$1
+    fi
+
+    if [ X"$SSH_AUTH_SOCK" = X ] ; then
+        return 2
+    fi
+
+    if [ -S "$SSH_AUTH_SOCK" ] ; then
+        ssh-add -l > /dev/null
+        if [ $? = 2 ] ; then
+            echo "Socket $SSH_AUTH_SOCK is dead!  Deleting!"
+            rm -f "$SSH_AUTH_SOCK"
+            return 4
+        else
+            echo "Found ssh-agent $SSH_AUTH_SOCK"
+            return 0
+        fi
+    else
+        echo "$SSH_AUTH_SOCK is not a socket!"
+        return 3
+    fi
+}
+
+function sshagent_reload {
+    # ssh agent sockets can be attached to a ssh daemon process or an
+    # ssh-agent process.
+
+    AGENTFOUND=0
+
+    # Attempt to find and use the ssh-agent in the current environment
+    if sshagent_testsocket ; then AGENTFOUND=1 ; fi
+
+    # If there is no agent in the environment, search /tmp for
+    # possible agents to reuse before starting a fresh ssh-agent
+    # process.
+    if [ $AGENTFOUND = 0 ] ; then
+        for agentsocket in $(sshagent_findsockets) ; do
+            if [ $AGENTFOUND != 0 ] ; then break ; fi
+            if sshagent_testsocket "$agentsocket" ; then AGENTFOUND=1 ; fi
+        done
+    fi
+
+    # If at this point we still haven't located an agent, it's time to
+    # start a new one
+    if [ $AGENTFOUND = 0 ] ; then
+        eval "$(ssh-agent)"
+    fi
+
+    # Clean up
+    unset AGENTFOUND
+    unset agentsocket
+
+    # Finally, show what keys are currently in the agent
+    ssh-add -l
+}
+
+if [[ -f "$HOME/.ssh/environment" ]]; then
+    sshagent_reload > /dev/null
+fi
+
+# Alias agents
+alias sagent_start="sshagent_start"
+alias sagent_stop="sshagent_stop"
+
+# Clean up not global functions
+unset -f sshagent_findsockets sshagent_testsocket
-- 
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