Initial support of custom commands after OpenWrt boot.

docker-compose.yml

@@ -42,6 +42,11 @@ services:
       # If unset -> 256
       RAM_COUNT: 256
 
+      # User command or script to run after OpenWrt is booted
+      # Please note that all commands and script will be executed as root
+      #OPENWRT_AFTER_BOOT_CMD: "cat /etc/banner"
+      #OPENWRT_AFTER_BOOT_CMD: "/usr/bin/fw_wan_open_http"
+
       #DEBUG: "y"
 
     ports:

src/helpers.sh

@@ -15,5 +15,6 @@ trap 'error "Status $? while: $BASH_COMMAND (line $LINENO/$BASH_LINENO)"' ERR
 : "${USB_1:=""}"          # USB 1 vendor and device ID
 : "${USB_2:=""}"          # USB 2 vendor and device ID
 : "${FORWARD_LUCI:=""}"   # Make LuCI OpenWrt web interface accessible via host LAN
+: "${OPENWRT_AFTER_BOOT_CMD:=""}"   # User command or script to run after OpenWrt is booted
 : "${IS_U_OS_APP:=""}"    # By default this container is not a u-OS app 
 : "${DEBUG:="N"}"         # Disable debugging

src/init_container.sh

@@ -74,9 +74,19 @@ else
   LUCI_COMMAND="sh -c 'sleep infinity'" # TODO: Find something better. Multirun needs something to run. 
 fi
 
+# ******* OpenWrt run command after boot handling *******
+if [[ -z "${OPENWRT_AFTER_BOOT_CMD}" ]]; then
+  OPENWRT_MULTIRUN_CMD="sh -c 'sleep infinity'" # TODO: Find something better. Multirun needs something to run. 
+else
+  info "Invoke command \"${OPENWRT_AFTER_BOOT_CMD}\" into OpenWrt after it is booted"
+  OPENWRT_MULTIRUN_CMD="/run/run_command_after_openwrt_boot.sh \"${OPENWRT_AFTER_BOOT_CMD}\""
+fi
+
+
 # Start processes
 exec multirun \
   "qemu-openwrt-web-backend" \
   "nginx" \
   "/run/run_openwrt.sh" \
-  "$LUCI_COMMAND"
+  "$LUCI_COMMAND" \
+  "$OPENWRT_MULTIRUN_CMD"

src/qemu_qmp.sh

@@ -1,5 +1,20 @@
 #!/bin/sh
-# Source: https://www.redhat.com/sysadmin/arguments-options-bash-scripts
+#
+# Copyright Albrecht Lohofener 2025 <albrechtloh@gmx.de>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 
 VERSION=0.1
 
@@ -28,7 +43,7 @@ Help()
 # Process the input options. Add options as needed.        #
 ############################################################
 # Get the options
-while getopts ":hvrqsSVR" option; do
+while getopts ":hvrqsSVRc" option; do
    case $option in
       h) # display Help
          Help
@@ -54,6 +69,29 @@ while getopts ":hvrqsSVR" option; do
       R) # Reboot, package qemu-ga needs to be installed
          echo -ne '{"execute": "guest-exec", "arguments": { "path": "reboot"}}' | nc -w 1 -U /run/qga.sock
          exit;;
+      c) # Run shell command inside OpenWrt, package qemu-ga needs to be installed
+         # Execute command in OpenWrt
+         INPUT_DATA=`echo "$2" | base64`
+         RETURN_JSON=`echo '{"execute": "guest-exec", "arguments": { "path": "/bin/sh", "input-data": "'${INPUT_DATA}'", "capture-output": true }}' | nc -w 1 -U /run/qga.sock`         
+         PID=`echo $RETURN_JSON | sed -n 's/.*"pid": \([0-9]*\).*/\1/p'` # Process return and extract PID
+         #echo >&2 "PID: $PID"
+         [ -z "$PID" ] && exit 1
+         while true; do # Wait for command exit
+            RETURN_JSON=`echo '{"execute": "guest-exec-status", "arguments": { "pid": '${PID}'}}' | nc -w 1 -U /run/qga.sock`
+            export EXITCODE=`echo $RETURN_JSON | sed -n 's/.*"exitcode": \([0-9]*\).*/\1/p'`
+            export OUT_DATA=`echo $RETURN_JSON | sed -n 's/.*"out-data": "\([^"]*\).*/\1/p' | base64 -d`
+            export EXITED=`echo $RETURN_JSON | sed -n 's/.*"exited": \(true\|false\).*/\1/p'`
+            if [ "$EXITED" = "true" ]; then
+               break
+            fi
+            sleep 1
+         done
+         echo "$OUT_DATA" # Return stdout
+         if [ -z "$EXITCODE" ]; then # Exit code handling
+            exit 1
+         else
+            exit "$EXITCODE"
+         fi;;
      \?) # Invalid option
          echo "Error: Invalid option"
          Help

src/run_command_after_openwrt_boot.sh

@@ -0,0 +1,62 @@
+#!/bin/bash
+#
+# Copyright Albrecht Lohofener 2025 <albrechtloh@gmx.de>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+# Display help page
+show_help() {
+    echo "Usage: $0 <argument-for-openwrt>"
+    echo ""
+    echo "This script checks if OpenWrt is booted."
+    echo "Once successful, it executes the user command."
+    echo ""
+    echo "Options:"
+    echo "  -h, --help     Show this help message and exit."
+    exit 0
+}
+
+# Check for help flag
+if [[ $1 == "-h" || $1 == "--help" ]]; then
+    show_help
+fi
+
+# Polling the initial command until it succeeds
+set +e # Enable that the next command can fail
+while true; do
+    # Check if OpenWrt is booted
+    /run/qemu_qmp.sh -c 'logread | grep "procd: - init complete"' >/dev/null 2>&1
+    if [ $? -eq 0 ]; then
+        echo "Detected OpenWrt is booted"
+        break
+    fi
+
+    # Wait for a short time before polling again
+    sleep 2
+    #echo "Waiting for OpenWrt boot..."
+done
+set -e # Revert set +e
+
+# Execute the second command with the argument provided as input
+if [ $# -ne 1 ]; then
+    echo "Usage: $0 <argument-for-qemu_qmp>"
+    exit 1
+fi
+
+# Run user command
+echo "Run command \"$1\""
+/run/qemu_qmp.sh -c "$1"
+
+# Never exit because multirun will exit the container then
+sleep infinity