From ead40a0d93afca042c3222905a4acb82dcb8bbe5 Mon Sep 17 00:00:00 2001
From: Elektroll <git@elektrollart.org>
Date: Fri, 16 Aug 2019 23:41:55 +0200
Subject: [PATCH] =?UTF-8?q?'sslchecker'=20hinzuf=C3=BCgen?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 sslchecker | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 sslchecker

diff --git a/sslchecker b/sslchecker
new file mode 100644
index 0000000..886836d
--- /dev/null
+++ b/sslchecker
@@ -0,0 +1,86 @@
+#!/bin/bash
+usage()
+{
+cat <<EOF
+Usage: $(basename $0) [options]
+Options:
+  -f    local file
+  -h    remote host
+  -p    custome port
+
+Exaple:
+  sslchecker -h letsencrypt.org
+
+EOF
+}
+
+while [ "$1" ]; do
+  case "$1" in
+    -f)
+      shift
+      file="$1"
+      source="local"
+      ;;
+    -h)
+      shift
+      host="$1"
+      source="remote"
+      ;;
+    -p)
+      shift
+      port="$1"
+      ;;
+    --help)
+      usage
+      exit 0
+      ;;
+    *)
+      echo "see --help for usage"
+      exit 1
+      ;;
+  esac
+  shift
+done
+
+LocalCheck()
+{
+  openssl x509 -in $file -noout -text -certopt no_header,no_version,no_serial,no_signame,no_pubkey,no_sigdump,no_aux
+}
+
+RemoteCheck()
+{
+  echo | openssl s_client -connect $host:$port -servername $host 2>/dev/null | openssl x509 -noout -text -certopt no_header,no_version,no_serial,no_signame,no_pubkey,no_sigdump,no_aux
+}
+
+AltName()
+{
+grep -A1 "Subject Alternative Name:" | tail -n1 | sed 's/\*/wildcard/g' | sed 's/DNS://g' | tr -d ' ' | tr ',' '\n'
+}
+
+Validation()
+{
+  grep "CN =" | grep "Issuer" | sed 's/^.*CN = //g'
+}
+
+ValidDate()
+{
+  grep "Not" | sed 's/^[^:]*: //g'
+}
+if [[ "$source" == "local" ]]; then
+  if [ -z "$file" ]; then
+    exit 1
+  fi
+  LocalCheck
+fi
+
+if [ "$source" == "remote" ]; then
+if [ -z "$port" ]; then
+  port="443"
+fi
+echo -e '\e[90m\e[1m\e[104mCert is valid for:\e[0m'
+RemoteCheck | AltName
+echo -e '\e[90m\e[1m\e[101mValidated by:\e[0m'
+RemoteCheck | Validation
+echo -e '\e[90m\e[1m\e[43mValidated from to:\e[0m'
+RemoteCheck | ValidDate
+fi
\ No newline at end of file