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dotfiles/bin/codex-devops-auth.sh
2026-05-21 16:57:06 +02:00

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#!/bin/zsh
set -euo pipefail
PKCS11_LIB="${PKCS11_LIB:-/usr/local/lib/opensc-pkcs11.so}"
YUBIKEY_PIN_FILE="${YUBIKEY_PIN_FILE:-/tmp/pass}"
TOKEN_HOST="${TOKEN_HOST:-operator-access-token.svc.ad1.r2}"
SSH_CONFIG_FILE="${SSH_CONFIG_FILE:-$HOME/.ssh/config.oci}"
OCI_BIN="${OCI_BIN:-/opt/homebrew/bin/oci}"
OCI_SESSION_REGION="${OCI_SESSION_REGION:-us-chicago-1}"
OCI_PROFILE_NAME="${OCI_PROFILE_NAME:-MCP_GW_DEFAULT}"
OCI_CONFIG_FILE="${OCI_CONFIG_FILE:-${HOME}/.oci/config}"
OCI_PROFILE_SYNC_ENABLED="${OCI_PROFILE_SYNC_ENABLED:-1}"
OCI_PROFILE_SYNC_TARGETS="${OCI_PROFILE_SYNC_TARGETS:-DEFAULT}"
OCI_PROFILE_SYNC_KEYS="${OCI_PROFILE_SYNC_KEYS:-tenancy,region,security_token_file,key_file,fingerprint,pass_phrase,user}"
OCI_PROFILE_SYNC_PYTHON="${OCI_PROFILE_SYNC_PYTHON:-python3}"
OCI_SESSION_VALIDATE_TIMEOUT_SECONDS="${OCI_SESSION_VALIDATE_TIMEOUT_SECONDS:-2}"
RESET_AGENT="${RESET_AGENT:-0}"
CODEX_DEVOPS_AUTH_ENV_OUT="${CODEX_DEVOPS_AUTH_ENV_OUT:-}"
DEDICATED_AGENT_PID=""
DEDICATED_AGENT_SOCK=""
PRESERVE_DEDICATED_AGENT="0"
log() {
print -u2 -- "$@"
}
cleanup() {
if [[ "${PRESERVE_DEDICATED_AGENT}" != "1" && -n "${DEDICATED_AGENT_PID}" && -n "${DEDICATED_AGENT_SOCK}" ]]; then
SSH_AGENT_PID="${DEDICATED_AGENT_PID}" SSH_AUTH_SOCK="${DEDICATED_AGENT_SOCK}" ssh-agent -k >/dev/null 2>&1 || true
fi
}
run_oci() {
"${OCI_BIN}" --profile "${OCI_PROFILE_NAME}" "$@"
}
resolve_timeout_bin() {
local candidate
for candidate in timeout gtimeout /opt/homebrew/bin/timeout /opt/homebrew/bin/gtimeout; do
if [[ "${candidate}" == /* ]]; then
if [[ -x "${candidate}" ]]; then
print -r -- "${candidate}"
return 0
fi
continue
fi
if command -v "${candidate}" >/dev/null 2>&1; then
command -v "${candidate}"
return 0
fi
done
return 1
}
get_validate_timeout_seconds() {
local timeout_seconds="${OCI_SESSION_VALIDATE_TIMEOUT_SECONDS}"
if [[ ! "${timeout_seconds}" =~ '^[0-9]+([.][0-9]+)?$' ]]; then
log "Warning: invalid OCI_SESSION_VALIDATE_TIMEOUT_SECONDS=${timeout_seconds}; using 2 seconds."
print -r -- "2"
return 0
fi
print -r -- "${timeout_seconds}"
}
run_oci_with_timeout() {
local timeout_seconds="$1"
shift
local timeout_bin
if ! timeout_bin="$(resolve_timeout_bin)"; then
log "Warning: no timeout binary found; running OCI command without a timeout."
run_oci "$@"
return $?
fi
"${timeout_bin}" "${timeout_seconds}" "${OCI_BIN}" --profile "${OCI_PROFILE_NAME}" "$@"
}
ensure_oci_session() {
if [[ ! -x "${OCI_BIN}" ]]; then
print -u2 "OCI CLI not found or not executable: ${OCI_BIN}"
exit 1
fi
local validate_timeout_seconds
validate_timeout_seconds="$(get_validate_timeout_seconds)"
set +e
run_oci_with_timeout "${validate_timeout_seconds}" session validate >/dev/null 2>&1
local validate_rc=$?
set -e
if [[ ${validate_rc} -eq 0 ]]; then
log "OCI CLI session is already valid."
return 0
fi
if [[ ${validate_rc} -eq 124 ]]; then
log "OCI CLI session validation timed out after ${validate_timeout_seconds} seconds; treating session as invalid."
fi
log "OCI CLI session is not valid; attempting refresh."
set +e
run_oci session refresh >/dev/null 2>&1
local refresh_rc=$?
set -e
if [[ ${refresh_rc} -eq 0 ]]; then
log "OCI CLI session refresh succeeded."
return 0
fi
log "Running OCI CLI session authenticate for ${OCI_SESSION_REGION} with profile ${OCI_PROFILE_NAME}."
"${OCI_BIN}" session authenticate --region "${OCI_SESSION_REGION}" --profile-name "${OCI_PROFILE_NAME}"
}
sync_oci_profiles() {
if [[ "${OCI_PROFILE_SYNC_ENABLED}" != "1" ]]; then
log "OCI profile sync disabled."
return 0
fi
if [[ -z "${OCI_PROFILE_SYNC_TARGETS}" ]]; then
log "OCI profile sync: no target profiles configured."
return 0
fi
if [[ ! -r "${OCI_CONFIG_FILE}" || ! -w "${OCI_CONFIG_FILE}" ]]; then
log "Warning: OCI config is not readable and writable; skipping profile sync: ${OCI_CONFIG_FILE}"
return 0
fi
if ! command -v "${OCI_PROFILE_SYNC_PYTHON}" >/dev/null 2>&1; then
log "Warning: ${OCI_PROFILE_SYNC_PYTHON} not found; skipping OCI profile sync."
return 0
fi
OCI_CONFIG_FILE_FOR_SYNC="${OCI_CONFIG_FILE}" \
OCI_PROFILE_SYNC_SOURCE="${OCI_PROFILE_NAME}" \
OCI_PROFILE_SYNC_TARGETS_FOR_SYNC="${OCI_PROFILE_SYNC_TARGETS}" \
OCI_PROFILE_SYNC_KEYS_FOR_SYNC="${OCI_PROFILE_SYNC_KEYS}" \
"${OCI_PROFILE_SYNC_PYTHON}" - <<'PY'
import os
from pathlib import Path
import re
import tempfile
config_path = Path(os.environ["OCI_CONFIG_FILE_FOR_SYNC"]).expanduser()
source = os.environ["OCI_PROFILE_SYNC_SOURCE"]
targets = [
target.strip()
for target in os.environ["OCI_PROFILE_SYNC_TARGETS_FOR_SYNC"].split(",")
if target.strip() and target.strip() != source
]
keys = [
key.strip()
for key in os.environ["OCI_PROFILE_SYNC_KEYS_FOR_SYNC"].split(",")
if key.strip()
]
if not targets or not keys:
raise SystemExit(0)
section_re = re.compile(r"^(\s*)\[([^\]]+)\](\s*(?:[#;].*)?)$")
key_re = re.compile(r"^(\s*)([A-Za-z_][A-Za-z0-9_]*)(\s*=\s*)(.*?)(\s*(?:[#;].*)?)$")
lines = config_path.read_text(encoding="utf-8").splitlines(keepends=True)
line_sections = []
sections = {}
current = None
for index, line in enumerate(lines):
match = section_re.match(line.rstrip("\n"))
if match:
current = match.group(2).strip()
sections.setdefault(current, {"start": index, "end": None})
line_sections.append(current)
for index, section in enumerate(line_sections):
if section is not None:
sections[section]["end"] = index + 1
if source not in sections:
raise SystemExit(f"OCI profile sync source profile not found: {source}")
source_values = {}
source_start = int(sections[source]["start"])
source_end = int(sections[source]["end"] or len(lines))
for line in lines[source_start + 1 : source_end]:
match = key_re.match(line.rstrip("\n"))
if match and match.group(2).strip() in keys:
source_values[match.group(2).strip()] = match.group(4).rstrip()
if not source_values:
raise SystemExit(f"OCI profile sync source profile has no syncable keys: {source}")
changed = False
for target in targets:
if target not in sections:
insert_at = len(lines)
if lines and not lines[-1].endswith("\n"):
lines[-1] += "\n"
if lines and lines[-1].strip():
lines.append("\n")
insert_at += 1
lines.append(f"[{target}]\n")
sections[target] = {"start": insert_at, "end": insert_at + 1}
for known in sections:
if known != target and int(sections[known]["start"]) >= insert_at:
sections[known]["start"] = int(sections[known]["start"]) + 2
if sections[known]["end"] is not None:
sections[known]["end"] = int(sections[known]["end"]) + 2
changed = True
target_start = int(sections[target]["start"])
target_end = int(sections[target]["end"] or len(lines))
present: set[str] = set()
index = target_start + 1
while index < target_end:
raw = lines[index]
newline = "\n" if raw.endswith("\n") else ""
match = key_re.match(raw.rstrip("\n"))
if match:
key = match.group(2).strip()
if key in source_values:
present.add(key)
replacement = f"{match.group(1)}{key}{match.group(3)}{source_values[key]}{match.group(5)}{newline}"
if replacement != raw:
lines[index] = replacement
changed = True
index += 1
missing = [key for key in keys if key in source_values and key not in present]
if missing:
insert_at = target_end
additions = [f"{key} = {source_values[key]}\n" for key in missing]
lines[insert_at:insert_at] = additions
delta = len(additions)
sections[target]["end"] = target_end + delta
for known in sections:
if known != target and int(sections[known]["start"]) >= insert_at:
sections[known]["start"] = int(sections[known]["start"]) + delta
if sections[known]["end"] is not None:
sections[known]["end"] = int(sections[known]["end"]) + delta
changed = True
if changed:
content = "".join(lines)
mode = config_path.stat().st_mode & 0o777
with tempfile.NamedTemporaryFile(
"w",
encoding="utf-8",
dir=str(config_path.parent),
prefix=f".{config_path.name}.",
delete=False,
) as tmp:
tmp.write(content)
tmp_name = tmp.name
os.chmod(tmp_name, mode)
os.replace(tmp_name, config_path)
PY
local sync_rc=$?
if [[ ${sync_rc} -ne 0 ]]; then
log "OCI profile sync failed with exit code ${sync_rc}."
exit "${sync_rc}"
fi
log "OCI profile sync complete: ${OCI_PROFILE_NAME} -> ${OCI_PROFILE_SYNC_TARGETS}"
}
ensure_ssh_agent() {
log "Starting dedicated ssh-agent for Codex."
unset SSH_AUTH_SOCK SSH_AGENT_PID
eval "$(ssh-agent -s)" >/dev/null
DEDICATED_AGENT_PID="${SSH_AGENT_PID:-}"
DEDICATED_AGENT_SOCK="${SSH_AUTH_SOCK:-}"
}
resolve_token_ssh_config_value() {
local key="$1"
ssh -G -F "${SSH_CONFIG_FILE}" "${TOKEN_HOST}" 2>/dev/null | awk -v key="${key}" '
$1 == key {
$1 = ""
sub(/^[[:space:]]+/, "")
print
exit
}
'
}
resolve_token_proxy_command() {
resolve_token_ssh_config_value proxycommand
}
resolve_token_proxy_jump() {
resolve_token_ssh_config_value proxyjump
}
resolve_token_ssh_user() {
resolve_token_ssh_config_value user
}
quiet_proxy_command() {
local proxy_command="$1"
proxy_command="${proxy_command// -vvv/}"
proxy_command="${proxy_command// -vv/}"
proxy_command="${proxy_command// -v/}"
print -r -- "${proxy_command}"
}
proxy_ssh_prefix() {
local ssh_bin="$1"
local prefix="${ssh_bin} -F ${(q)SSH_CONFIG_FILE} -o LogLevel=ERROR"
if [[ -n "${TOKEN_SSH_USER:-}" ]]; then
prefix+=" -l ${(q)TOKEN_SSH_USER}"
fi
print -r -- "${prefix}"
}
proxy_command_with_ssh_config() {
local proxy_command="$1"
local bastion_host
if [[ -z "${proxy_command}" || "${proxy_command}" == "none" ]]; then
return 1
fi
if [[ "${proxy_command}" == bash\ -c\ * && "${proxy_command}" == *" -W %h:%p "* ]]; then
bastion_host="${proxy_command#* -W %h:%p }"
bastion_host="${bastion_host%% *}"
bastion_host="${bastion_host%%\'*}"
bastion_host="${bastion_host%%\"*}"
if [[ -n "${bastion_host}" ]]; then
print -r -- "$(proxy_ssh_prefix ssh) -W %h:%p ${bastion_host}"
return 0
fi
fi
case "${proxy_command}" in
/usr/bin/ssh\ *)
print -r -- "$(proxy_ssh_prefix /usr/bin/ssh) ${proxy_command#/usr/bin/ssh }"
;;
ssh\ *)
print -r -- "$(proxy_ssh_prefix ssh) ${proxy_command#ssh }"
;;
*)
print -r -- "${proxy_command}"
;;
esac
}
proxy_jump_as_proxy_command() {
local proxy_jump="$1"
if [[ -z "${proxy_jump}" || "${proxy_jump}" == "none" ]]; then
return 1
fi
print -r -- "$(proxy_ssh_prefix ssh) -W %h:%p ${proxy_jump}"
}
build_token_ssh_args() {
TOKEN_SSH_ARGS=(-F "${SSH_CONFIG_FILE}" -o LogLevel=ERROR)
TOKEN_SSH_USER="$(resolve_token_ssh_user || true)"
local proxy_command proxy_jump configured_proxy_command
proxy_command="$(resolve_token_proxy_command || true)"
configured_proxy_command="$(proxy_command_with_ssh_config "${proxy_command}" || true)"
if [[ -z "${configured_proxy_command}" ]]; then
proxy_jump="$(resolve_token_proxy_jump || true)"
configured_proxy_command="$(proxy_jump_as_proxy_command "${proxy_jump}" || true)"
fi
if [[ -n "${configured_proxy_command}" ]]; then
TOKEN_SSH_ARGS+=(-o "ProxyCommand=${configured_proxy_command}")
fi
}
load_pkcs11_provider_with_expect() {
local expect_script="$1"
shift
if ! command -v expect >/dev/null 2>&1; then
return 127
fi
if ! PKCS11_LIB_FOR_EXPECT="${PKCS11_LIB}" expect -c "${expect_script}"; then
return 1
fi
return 0
}
load_pkcs11_provider_from_pin_file() {
YUBIKEY_PIN_FILE_FOR_EXPECT="${YUBIKEY_PIN_FILE}" load_pkcs11_provider_with_expect '
set timeout 30
set pkcs11_lib $env(PKCS11_LIB_FOR_EXPECT)
set pin_file $env(YUBIKEY_PIN_FILE_FOR_EXPECT)
set fh [open $pin_file r]
gets $fh pin
close $fh
spawn ssh-add -s $pkcs11_lib
expect {
-re {([Pp]assphrase|PIN|pin).*:} {
send -- "$pin\r"
exp_continue
}
eof {
catch wait result
exit [lindex $result 3]
}
timeout {
exit 124
}
}
' >/dev/null
}
load_pkcs11_provider_with_prompt() {
load_pkcs11_provider_with_expect '
set timeout 120
set pkcs11_lib $env(PKCS11_LIB_FOR_EXPECT)
send_user "YubiKey PIN: "
stty -echo
expect_user -re "(.*)\n"
stty echo
send_user "\n"
set pin $expect_out(1,string)
log_user 0
spawn ssh-add -s $pkcs11_lib
expect {
-re {([Pp]assphrase|PIN|pin).*:} {
send -- "$pin\r"
exp_continue
}
eof {
catch wait result
exit [lindex $result 3]
}
timeout {
exit 124
}
}
'
}
add_pkcs11_provider() {
log "Loading PKCS#11 provider: ${PKCS11_LIB}"
if [[ -r "${YUBIKEY_PIN_FILE}" ]]; then
if ! load_pkcs11_provider_from_pin_file; then
log "Failed to load PKCS#11 provider using YubiKey PIN file ${YUBIKEY_PIN_FILE}."
return 1
fi
elif [[ -t 0 ]]; then
if ! load_pkcs11_provider_with_prompt; then
log "Failed to load PKCS#11 provider using prompted YubiKey PIN."
return 1
fi
else
log "YubiKey PIN file not readable at ${YUBIKEY_PIN_FILE}, and stdin is not a terminal."
return 1
fi
if ! ssh-add -l >/dev/null 2>&1; then
log "PKCS#11 provider loaded, but no SSH identities are visible to the dedicated agent."
return 1
fi
}
prepare_agent() {
ensure_ssh_agent
add_pkcs11_provider
}
refresh_operator_token() {
local operator_token
log "Refreshing OPERATOR_ACCESS_TOKEN from ${TOKEN_HOST} using ${SSH_CONFIG_FILE}"
TOKEN_SSH_ARGS=()
build_token_ssh_args
if ! operator_token="$(ssh "${TOKEN_SSH_ARGS[@]}" "${TOKEN_HOST}" "generate --mode jwt")"; then
log "Failed to refresh OPERATOR_ACCESS_TOKEN from ${TOKEN_HOST}."
return 1
fi
if [[ -z "${operator_token}" ]]; then
log "Token host ${TOKEN_HOST} returned an empty OPERATOR_ACCESS_TOKEN."
return 1
fi
export OPERATOR_ACCESS_TOKEN="${operator_token}"
export OP_TOKEN="${OPERATOR_ACCESS_TOKEN}"
log "Using fresh OP_TOKEN for Codex and DevOps MCP."
}
write_shell_export() {
local name="$1"
local value="$2"
printf 'export %s=%q\n' "${name}" "${value}"
}
write_auth_env() {
local env_out="$1"
local env_dir tmp
env_dir="$(dirname -- "${env_out}")"
mkdir -p "${env_dir}"
tmp="$(mktemp "${env_out}.XXXXXX")"
{
write_shell_export SSH_AUTH_SOCK "${DEDICATED_AGENT_SOCK}"
write_shell_export SSH_AGENT_PID "${DEDICATED_AGENT_PID}"
write_shell_export OPERATOR_ACCESS_TOKEN "${OPERATOR_ACCESS_TOKEN}"
write_shell_export OP_TOKEN "${OP_TOKEN}"
} > "${tmp}"
chmod 600 "${tmp}"
mv -f "${tmp}" "${env_out}"
}
if [[ ! -f "${SSH_CONFIG_FILE}" ]]; then
print -u2 "SSH config file not found: ${SSH_CONFIG_FILE}"
exit 1
fi
if [[ "${RESET_AGENT}" == "1" ]]; then
log "Resetting SSH agent on explicit request."
pkill -9 ssh-agent >/dev/null 2>&1 || true
pkill -9 ssh-pkcs11-helper >/dev/null 2>&1 || true
sleep 1
fi
trap cleanup EXIT INT TERM
ensure_oci_session
sync_oci_profiles
prepare_agent
refresh_operator_token
if [[ -n "${CODEX_DEVOPS_AUTH_ENV_OUT}" ]]; then
write_auth_env "${CODEX_DEVOPS_AUTH_ENV_OUT}"
PRESERVE_DEDICATED_AGENT="1"
log "Wrote Codex auth environment to ${CODEX_DEVOPS_AUTH_ENV_OUT}."
exit 0
fi
/opt/homebrew/bin/codex "$@"