Print timestamp in log messages

Author: mjnaderi

client/entrypoint.sh

@@ -1,13 +1,12 @@
 #!/bin/sh
 
+log_with_timestamp() {
+    echo -e "$1" | awk '{ print strftime("[%Y-%m-%d %H:%M:%S%z]"), $0 }'
+}
+
 # Ensure the script is not run by the "root" user.
 if [ "$(id -u)" == "0" ]; then
-    echo "This image should not be run as the 'root' user. Exiting..."
-    exit 1
-fi
-
-if [ -z "${SSH_HOSTNAME}" ]; then
-    echo "SSH_HOSTNAME is not set. Exiting..."
+    log_with_timestamp "This image should not be run as the 'root' user. Exiting..."
     exit 1
 fi
 
@@ -23,6 +22,16 @@ export LD_PRELOAD=/usr/lib/libnss_wrapper.so NSS_WRAPPER_PASSWD=/tmp/passwd NSS_
 mkdir -p "${HOME}/.ssh"
 chmod -R 700 "${HOME}"
 
+log_with_timestamp "\033[1;34mWelcome to docker-ssh/client!\033[0m"
+log_with_timestamp "\033[1;32m   Alpine: \033[0m $(cat /etc/alpine-release)"
+log_with_timestamp "\033[1;32m  OpenSSH: \033[0m $(ssh -V 2>&1)"
+log_with_timestamp "\033[1;32m    Rsync: \033[0m $(rsync --version | head -n 1)"
+
+if [ -z "${SSH_HOSTNAME}" ]; then
+    log_with_timestamp "SSH_HOSTNAME is not set. Exiting..."
+    exit 1
+fi
+
 ################################
 # setup keys                   #
 ################################
@@ -31,18 +40,18 @@ if [ -n "${CLIENT_ED25519_PRIVATE_KEY_FILE}" ]; then
         if [ "${CLIENT_ED25519_PRIVATE_KEY_FILE}" != "${HOME}/.ssh/id_ed25519" ]; then
             cp "${CLIENT_ED25519_PRIVATE_KEY_FILE}" "${HOME}/.ssh/id_ed25519"
             chmod 600 "${HOME}/.ssh/id_ed25519"
+            log_with_timestamp "Installed private key from key file."
         fi
-        echo "Installed private key from key file."
     else
-        echo "'${CLIENT_ED25519_PRIVATE_KEY_FILE}' is not readable. Exiting..."
+        log_with_timestamp "'${CLIENT_ED25519_PRIVATE_KEY_FILE}' is not readable. Exiting..."
         exit 1
     fi
 elif [ -n "${CLIENT_ED25519_PRIVATE_KEY_BASE64}" ]; then
     echo "${CLIENT_ED25519_PRIVATE_KEY_BASE64}" | base64 -d >"${HOME}/.ssh/id_ed25519"
     chmod 600 "${HOME}/.ssh/id_ed25519"
-    echo "Installed private key from env var."
+    log_with_timestamp "Installed private key from env var."
 else
-    echo "No private key provided. Exiting..."
+    log_with_timestamp "No private key provided. Exiting..."
     exit 1
 fi
 
@@ -54,7 +63,7 @@ if [ -n "${SERVER_ED25519_PUBLIC_KEY}" ]; then
     fi
     chmod 600 "${HOME}/.ssh/known_hosts"
 else
-    echo "SERVER_ED25519_PUBLIC_KEY is not set. Exiting..."
+    log_with_timestamp "SERVER_ED25519_PUBLIC_KEY is not set. Exiting..."
     exit 1
 fi
 
@@ -93,8 +102,10 @@ export AUTOSSH_POLL="${AUTOSSH_POLL:-30}"
 # run/schedule the command     #
 ################################
 if [ -n "${SCHEDULE}" ]; then
+    log_with_timestamp "Scheduling command..."
     echo "${SCHEDULE} ${SCHEDULE_CMD}" >"${HOME}/crontab"
     exec supercronic "${HOME}/crontab"
 else
-    exec "$@"
+    log_with_timestamp "Running $1..."
+    exec "$@" 2>&1 | awk '{ print strftime("[%Y-%m-%d %H:%M:%S%z]"), $0 }'
 fi

server/entrypoint.sh

@@ -1,8 +1,12 @@
 #!/bin/sh
 
+log_with_timestamp() {
+    echo -e "$1" | awk '{ print strftime("[%Y-%m-%d %H:%M:%S%z]"), $0 }'
+}
+
 # Ensure the script is not run by the "root" user.
 if [ "$(id -u)" == "0" ]; then
-    echo "This image should not be run as the 'root' user. Exiting..."
+    log_with_timestamp "This image should not be run as the 'root' user. Exiting..."
     exit 1
 fi
 
@@ -18,6 +22,11 @@ export LD_PRELOAD=/usr/lib/libnss_wrapper.so NSS_WRAPPER_PASSWD=/tmp/passwd NSS_
 mkdir -p "${HOME}/sshd" "${HOME}/.ssh"
 chmod -R 700 "${HOME}"
 
+log_with_timestamp "\033[1;34mWelcome to docker-ssh/server!\033[0m"
+log_with_timestamp "\033[1;32m   Alpine: \033[0m $(cat /etc/alpine-release)"
+log_with_timestamp "\033[1;32m  OpenSSH: \033[0m $(sshd -V 2>&1)"
+log_with_timestamp "\033[1;32m    Rsync: \033[0m $(rsync --version | head -n 1)"
+
 ################################
 # setup host key               #
 ################################
@@ -26,18 +35,18 @@ if [ -n "${SERVER_ED25519_PRIVATE_KEY_FILE}" ]; then
         if [ "${SERVER_ED25519_PRIVATE_KEY_FILE}" != "${HOME}/sshd/ssh_host_ed25519_key" ]; then
             cp "${SERVER_ED25519_PRIVATE_KEY_FILE}" "${HOME}/sshd/ssh_host_ed25519_key"
             chmod 600 "${HOME}/sshd/ssh_host_ed25519_key"
+            log_with_timestamp "Installed host key from key file."
         fi
-        echo "Installed host key from key file."
     else
-        echo "'${SERVER_ED25519_PRIVATE_KEY_FILE}' is not readable. Exiting..."
+        log_with_timestamp "'${SERVER_ED25519_PRIVATE_KEY_FILE}' is not readable. Exiting..."
         exit 1
     fi
 elif [ -n "${SERVER_ED25519_PRIVATE_KEY_BASE64}" ]; then
     echo "${SERVER_ED25519_PRIVATE_KEY_BASE64}" | base64 -d >"${HOME}/sshd/ssh_host_ed25519_key"
     chmod 600 "${HOME}/sshd/ssh_host_ed25519_key"
-    echo "Installed host key from env var."
+    log_with_timestamp "Installed host key from env var."
 else
-    echo "No private key provided. Exiting..."
+    log_with_timestamp "No private key provided. Exiting..."
     exit 1
 fi
 
@@ -50,7 +59,7 @@ fi
 # configure authorized_keys    #
 ################################
 if [ -z "${CLIENT_AUTHORIZED_KEYS}" ]; then
-    echo "CLIENT_AUTHORIZED_KEYS is not set. Exiting..."
+    log_with_timestamp "CLIENT_AUTHORIZED_KEYS is not set. Exiting..."
     exit 1
 else
     # Split the CLIENT_AUTHORIZED_KEYS variable by semicolon and add each to authorized_keys
@@ -92,4 +101,4 @@ AllowUsers sshuser
 ################################
 # Start sshd                   #
 ################################
-exec /usr/sbin/sshd -D -e -f "${HOME}/sshd/sshd.conf"
+exec /usr/sbin/sshd -D -e -f "${HOME}/sshd/sshd.conf" 2>&1 | awk '{ print strftime("[%Y-%m-%d %H:%M:%S%z]"), $0 }'