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sovereign_browser/browser.sh

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#!/bin/bash
#
# browser.sh — safe start/stop/restart for sovereign_browser
#
# Agents (Roo Code, etc.) should ALWAYS use this script to manage the browser
# process. It fully detaches the GUI from the terminal so the agent's command
# runner doesn't hang waiting for output that never ends.
#
# Usage:
# ./browser.sh start [ARGS...] — build + launch (detached), forwarding ARGS
# ./browser.sh stop — kill ALL running instances
# ./browser.sh restart [ARGS...]— stop + build + start, forwarding ARGS
# ./browser.sh status — list all running instances + MCP status
# ./browser.sh log — tail the browser log
# ./browser.sh mcp-url — print MCP endpoint URL(s) for running instance(s)
#
# Multiple instances: if the default MCP port (17777) is already in use by
# another instance, the browser automatically falls back to an OS-assigned
# port and records it in /tmp/sovereign_browser_<pid>.port. browser.sh
# reads these discovery files to find/stop/status every instance.
#
# Extra args after start/restart are forwarded to the binary, e.g.:
# ./browser.sh start --login-method generate --url https://example.com
# ./browser.sh restart --no-agent --url https://a.com --url https://b.com
#
# The browser's stdout/stderr go to /tmp/sovereign_browser.log
# The PID is stored in /tmp/sovereign_browser.pid
set -euo pipefail
BIN="./sovereign_browser"
LOG="/tmp/sovereign_browser.log"
PID_FILE="/tmp/sovereign_browser.pid"
DEFAULT_PORT=17777
DISCOVERY_GLOB="/tmp/sovereign_browser_*.port"
# Read the port for a given PID from its discovery file. Falls back to
# DEFAULT_PORT (17777) if no discovery file exists (e.g. older binary, or
# the first instance that successfully bound the default port and wrote a
# discovery file with 17777). Echoes the port to stdout.
port_for_pid() {
local pid="${1:-}"
local file="/tmp/sovereign_browser_${pid}.port"
if [[ -f "$file" ]]; then
local p
p=$(awk '{print $2}' "$file" 2>/dev/null | head -n1)
if [[ -n "$p" ]]; then
echo "$p"
return 0
fi
fi
echo "$DEFAULT_PORT"
}
# Echo the port for the currently-running instance (per get_pid), or
# DEFAULT_PORT if not running.
current_port() {
local pid
if pid=$(get_pid 2>/dev/null); then
port_for_pid "$pid"
else
echo "$DEFAULT_PORT"
fi
}
# Check if a PID is actually the sovereign_browser process.
# This safety guard prevents us from accidentally killing unrelated
# processes (e.g. Roo Code / VS Code extension host, which connects
# to the MCP server as a client and would otherwise be caught by
# a naive `lsof -ti :PORT` lookup).
is_browser_pid() {
local pid="$1"
[[ -z "$pid" ]] && return 1
kill -0 "$pid" 2>/dev/null || return 1
# /proc/<pid>/comm contains the executable name (truncated to 15 chars).
# For sovereign_browser it's "sovereign_brows" (15-char limit).
local comm
comm=$(ps -p "$pid" -o comm= 2>/dev/null | tr -d '[:space:]')
[[ "$comm" == "sovereign_browser" || "$comm" == "sovereign_brows" ]]
}
get_pid() {
# Primary: use the PID file (written by cmd_start).
if [[ -f "$PID_FILE" ]]; then
local pid
pid=$(cat "$PID_FILE" 2>/dev/null | head -n1 || echo "")
if [[ -n "$pid" ]] && is_browser_pid "$pid"; then
echo "$pid"
return 0
fi
fi
# Fallback 1: scan discovery files for a live sovereign_browser PID.
local f
for f in $DISCOVERY_GLOB; do
[[ -f "$f" ]] || continue
local dpid
dpid=$(awk '{print $1}' "$f" 2>/dev/null | head -n1)
if [[ -n "$dpid" ]] && is_browser_pid "$dpid"; then
echo "$dpid"
return 0
fi
done
# Fallback 2: find the process LISTENing on the default port.
# -sTCP:LISTEN matches only the listening socket, never client
# connections (e.g. Roo Code's MCP client). This is critical —
# without it, `lsof -ti :PORT` would also return Roo Code's PID
# and we'd kill the agent driving the browser.
local port_pid
port_pid=$(lsof -ti :"$DEFAULT_PORT" -sTCP:LISTEN 2>/dev/null | head -n1 || echo "")
if [[ -n "$port_pid" ]] && is_browser_pid "$port_pid"; then
echo "$port_pid"
return 0
fi
return 1
}
# Echo all live sovereign_browser PIDs (one per line), discovered via the
# discovery files and the default-port listen socket. Used by cmd_stop to
# kill every running instance.
all_pids() {
local pids=()
local f
for f in $DISCOVERY_GLOB; do
[[ -f "$f" ]] || continue
local dpid
dpid=$(awk '{print $1}' "$f" 2>/dev/null | head -n1)
if [[ -n "$dpid" ]] && is_browser_pid "$dpid"; then
pids+=("$dpid")
fi
done
local pp
for pp in $(lsof -ti :"$DEFAULT_PORT" -sTCP:LISTEN 2>/dev/null || true); do
if is_browser_pid "$pp"; then
pids+=("$pp")
fi
done
# Deduplicate.
printf '%s\n' "${pids[@]}" 2>/dev/null | sort -u | grep -v '^$' || true
}
cmd_stop() {
local stopped_any=0
# Collect ALL running sovereign_browser PIDs — from the PID file,
# discovery files, and the default-port listen socket. This kills
# every instance when multiple are running on different ports.
local candidates=()
if [[ -f "$PID_FILE" ]]; then
while IFS= read -r pid; do
[[ -n "$pid" ]] && candidates+=("$pid")
done < "$PID_FILE" 2>/dev/null
fi
while IFS= read -r pid; do
[[ -n "$pid" ]] && candidates+=("$pid")
done < <(all_pids)
# Deduplicate and kill only verified sovereign_browser PIDs.
for pid in $(printf '%s\n' "${candidates[@]}" 2>/dev/null | sort -u | grep -v '^$'); do
if is_browser_pid "$pid"; then
echo "[browser] Stopping PID $pid..."
kill "$pid" 2>/dev/null || true
stopped_any=1
fi
done
# Wait for graceful shutdown, then force-kill survivors (verified only).
if [[ "$stopped_any" -eq 1 ]]; then
sleep 1
for pid in $(all_pids); do
if is_browser_pid "$pid"; then
echo "[browser] Force killing PID $pid..."
kill -9 "$pid" 2>/dev/null || true
fi
done
sleep 1
fi
rm -f "$PID_FILE"
# Clean up any leftover discovery files (the browser removes its own on
# clean shutdown, but force-killed instances leave them behind).
local f
for f in $DISCOVERY_GLOB; do
[[ -f "$f" ]] || continue
local dpid
dpid=$(awk '{print $1}' "$f" 2>/dev/null | head -n1)
if [[ -z "$dpid" ]] || ! kill -0 "$dpid" 2>/dev/null; then
rm -f "$f"
fi
done
# Final check: is anything still running?
if [[ -n "$(all_pids)" ]]; then
echo "[browser] Warning: some instances still running."
else
echo "[browser] Stopped."
fi
return 0
}
cmd_start() {
local extra_args=("$@")
# Don't start if already running
if get_pid >/dev/null 2>&1; then
echo "[browser] Already running (PID $(get_pid)). Use 'restart' to reload."
return 0
fi
# ── Rendering environment detection ──────────────────────────────
# WebKitGTK's compositor re-composites every frame. On systems with
# GPU acceleration this is cheap (hardware-accelerated). But in
# software-rendering environments (Qubes OS, headless VMs, no GPU,
# llvmpipe/softpipe Mesa), the compositor pegs the CPU at ~100% on
# content-heavy pages. In those cases we disable compositing mode and
# the DMA-BUF renderer so WebKit uses the lighter non-composited path.
#
# On a normal desktop Linux with a real GPU, we leave these unset so
# WebKit can use hardware-accelerated compositing.
local software_rendering=0
# Check 1: LIBGL_ALWAYS_SOFTWARE is set (Qubes OS sets this unconditionally)
if [[ "${LIBGL_ALWAYS_SOFTWARE:-}" == "1" ]]; then
software_rendering=1
fi
# Check 2: No DRM render device → no GPU available
if [[ ! -e /dev/dri/renderD128 ]]; then
software_rendering=1
fi
# Check 3: EGL/GL renderer is a software rasterizer
if command -v eglinfo >/dev/null 2>&1; then
if eglinfo 2>/dev/null | grep -qiE 'llvmpipe|softpipe|swrast'; then
software_rendering=1
fi
elif command -v glxinfo >/dev/null 2>&1; then
if glxinfo 2>/dev/null | grep -qiE 'llvmpipe|softpipe|swrast'; then
software_rendering=1
fi
fi
if [[ "$software_rendering" -eq 1 ]]; then
echo "[browser] Software rendering detected — disabling WebKit compositor."
export WEBKIT_DISABLE_COMPOSITING_MODE=1
export WEBKIT_DISABLE_DMABUF_RENDERER=1
fi
# Build first
echo "[browser] Building..."
if ! make -s 2>/dev/null; then
echo "[browser] Build failed!" >&2
return 1
fi
echo "[browser] Build OK."
# Launch fully detached:
# setsid — new session, detached from controlling terminal
# nohup — immune to SIGHUP
# < /dev/null — detach stdin (GUI processes sometimes block on this)
# > $LOG 2>&1 — redirect all output to log file
# & disown — background + remove from job table
echo "[browser] Launching (detached)..."
if [[ ${#extra_args[@]} -gt 0 ]]; then
echo "[browser] Forwarding args: ${extra_args[*]}"
fi
setsid nohup "$BIN" "${extra_args[@]}" < /dev/null > "$LOG" 2>&1 &
local pid=$!
disown 2>/dev/null || true
echo "$pid" > "$PID_FILE"
# Wait for the MCP server to be ready (up to 10 seconds). The actual
# port may differ from DEFAULT_PORT if it was in use (the browser falls
# back to an OS-assigned port and writes it to a discovery file), so
# read the port from the discovery file each iteration.
echo "[browser] Waiting for MCP server (PID $pid)..."
local mcp_port=""
for i in $(seq 1 100); do
mcp_port=$(port_for_pid "$pid")
if curl -s -o /dev/null -X POST "http://localhost:$mcp_port/mcp" \
-H 'Content-Type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"ping"}' 2>/dev/null; then
echo "[browser] MCP server is ready (PID $pid, port $mcp_port)."
return 0
fi
sleep 0.1
done
echo "[browser] Warning: MCP server didn't respond within 10s." >&2
echo "[browser] Check log: $LOG" >&2
return 1
}
cmd_restart() {
cmd_stop
sleep 1
cmd_start "$@"
}
cmd_status() {
local pids
pids=$(all_pids)
if [[ -z "$pids" ]]; then
echo "[browser] Not running."
return 0
fi
local count
count=$(echo "$pids" | wc -l)
local pid
for pid in $pids; do
local p
p=$(port_for_pid "$pid")
echo "[browser] Running (PID $pid, port $p)."
if curl -s -o /dev/null -X POST "http://localhost:$p/mcp" \
-H 'Content-Type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"ping"}' 2>/dev/null; then
echo "[browser] MCP server: responsive"
else
echo "[browser] MCP server: NOT responding"
fi
done
if [[ "$count" -gt 1 ]]; then
echo "[browser] $count instances running."
fi
}
# Print the MCP endpoint URL for the running instance (or all instances
# if multiple are running). Useful for external clients that need to
# discover the port programmatically:
# URL=$(./browser.sh mcp-url)
cmd_mcp_url() {
local pids
pids=$(all_pids)
if [[ -z "$pids" ]]; then
echo "[browser] Not running." >&2
return 1
fi
local pid
for pid in $pids; do
local p
p=$(port_for_pid "$pid")
echo "http://localhost:$p/mcp"
done
}
cmd_log() {
if [[ -f "$LOG" ]]; then
tail -50 "$LOG"
else
echo "[browser] No log file at $LOG"
fi
}
case "${1:-}" in
start) shift; cmd_start "$@" ;;
stop) cmd_stop ;;
restart) shift; cmd_restart "$@" ;;
status) cmd_status ;;
log) cmd_log ;;
mcp-url) cmd_mcp_url ;;
*)
echo "Usage: $0 {start|stop|restart|status|log|mcp-url} [ARGS...]" >&2
echo " start/restart forward extra args to the binary." >&2
echo " mcp-url prints the MCP endpoint URL(s) for running instance(s)." >&2
exit 1
;;
esac