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fix the hermes-bridge

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david
2026-10-27 10:16:03 -06:00
parent b896aaad53
commit 9d2652f053
1 changed files with 40 additions and 20 deletions
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sandbox/hermes-bridge
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@@ -17,45 +17,65 @@ shift
HERMES_HOME="${HERMES_HOME:-$HOME/.hermes}"
API_SOCKET="$HERMES_HOME/coredesktop-api.sock"
# Ask the gateway, through its control socket, where its API listens; prints
# the port, or nothing if no gateway is ready
api_port() {
local control="$HERMES_HOME/gateway.sock" origin
# The gateway's answer to `identify` on its control socket, or nothing if no
# gateway is running
identify() {
local control="$HERMES_HOME/gateway.sock"
[ -S "$control" ] || control="$(cat "$HERMES_HOME/gateway.sock.path" 2> /dev/null)"
[ -S "$control" ] || return 1
origin="$(printf '{"protocol":1,"verb":"identify","id":1}\n' \
| socat -t 5 - "UNIX-CONNECT:$control" 2> /dev/null \
| jq -r 'select(.result.state == "ready") | .result.api_origin // empty' 2> /dev/null)"
# Only an IPv4 loopback origin is relayed, which is what Hermes uses by default
printf '{"protocol":1,"verb":"identify","id":1}\n' \
| socat -t 5 - "UNIX-CONNECT:$control" 2> /dev/null | grep .
}
# The port the gateway's API listens on, once the gateway is ready. Only an
# IPv4 loopback origin is relayed, which is what Hermes uses by default.
api_port() {
local origin
origin="$(identify | jq -r 'select(.result.state == "ready") | .result.api_origin // empty' 2> /dev/null)"
[[ "$origin" =~ ^http://127\.0\.0\.1:([0-9]+)$ ]] || return 1
echo "${BASH_REMATCH[1]}"
}
if [ "$1" = "gateway" ] && [ "$2" = "run" ]; then
# A terminal finds no relay, rather than the last gateway's, until this one
# is up
rm -f "$API_SOCKET"
# The relay waits for the gateway, which runs in this process once exec'd;
# the sandbox ends both together
(
for _ in $(seq 120); do
for _ in $(seq 480); do
if port="$(api_port)"; then
exec socat "UNIX-LISTEN:$API_SOCKET,unlink-early,mode=600,fork" "TCP:127.0.0.1:$port"
fi
sleep 1
sleep 0.25
done
echo "hermes-bridge: the gateway's API didn't come up; terminals can't reach it" >&2
) &
exec "$real" "$@"
fi
# A terminal: relay the gateway's port, if a gateway is running. Without one,
# hermes starts its own gateway inside this sandbox, which needs no relay.
if [ -S "$API_SOCKET" ] && port="$(api_port)"; then
socat "TCP-LISTEN:$port,bind=127.0.0.1,reuseaddr,fork" "UNIX-CONNECT:$API_SOCKET" &
# Wait for the listener (state 0A, LISTEN, in /proc/net/tcp) so hermes'
# first connection doesn't fail
hex="$(printf ':%04X ' "$port")"
for _ in $(seq 50); do
grep -q "$hex.* 0A " /proc/net/tcp && break
sleep 0.05
# A terminal: relay the gateway's port, if a gateway is running or its service
# is turned on, waiting for one that is still starting. Without one, hermes
# starts its own gateway inside this sandbox, which needs no relay.
if [ -e "$HOME/.config/systemd/user/default.target.wants/hermes-gateway.service" ] \
|| identify > /dev/null; then
[ -S "$API_SOCKET" ] && api_port > /dev/null || echo "Waiting for Hermes' gateway..." >&2
for _ in $(seq 240); do
[ -S "$API_SOCKET" ] && port="$(api_port)" && break
port=""
sleep 0.25
done
if [ -n "$port" ]; then
socat "TCP-LISTEN:$port,bind=127.0.0.1,reuseaddr,fork" "UNIX-CONNECT:$API_SOCKET" &
# Wait for the listener (state 0A, LISTEN, in /proc/net/tcp) so hermes'
# first connection doesn't fail
hex="$(printf ':%04X ' "$port")"
for _ in $(seq 50); do
grep -q "$hex.* 0A " /proc/net/tcp && break
sleep 0.05
done
else
echo "hermes-bridge: Hermes' gateway is running but its API isn't reachable; try: systemctl --user restart hermes-gateway" >&2
fi
fi
exec "$real" "$@"