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drone-runner-podman/engine/compiler/shell/shell.go
Julien Duchesne 67ee5cc7d0 Expose the authorized keys tmate feature (#18)
* Expose the authorized keys tmate feature
Described here: https://tmate.io/ in "Access Control"
The variable accepts the file content in raw format (with \n) and dumps it into a file which tmate reads
* Use echo instead of printf
* Add missing quote
* Only setup tmate settings if debug is activated
2021-06-24 09:47:12 +01:00

81 lines
2.0 KiB
Go

// Copyright 2019 Drone.IO Inc. All rights reserved.
// Use of this source code is governed by the Polyform License
// that can be found in the LICENSE file.
// Package shell provides functions for converting shell commands
// to posix shell scripts.
package shell
import (
"bytes"
"fmt"
"strings"
)
// Script converts a slice of individual shell commands to
// a posix-compliant shell script.
func Script(commands []string) string {
buf := new(bytes.Buffer)
fmt.Fprintln(buf)
fmt.Fprintf(buf, optionScript)
fmt.Fprintf(buf, tmateScript)
fmt.Fprintln(buf)
for _, command := range commands {
escaped := fmt.Sprintf("%q", command)
escaped = strings.Replace(escaped, "$", `\$`, -1)
buf.WriteString(fmt.Sprintf(
traceScript,
escaped,
command,
))
}
return buf.String()
}
// optionScript is a helper script this is added to the build
// to set shell options, in this case, to exit on error.
const optionScript = `
if [ ! -z "${DRONE_NETRC_FILE}" ]; then
echo $DRONE_NETRC_FILE > $HOME/.netrc
chmod 600 $HOME/.netrc
fi
unset DRONE_SCRIPT
unset DRONE_NETRC_MACHINE
unset DRONE_NETRC_USERNAME
unset DRONE_NETRC_PASSWORD
unset DRONE_NETRC_FILE
set -e
`
// traceScript is a helper script that is added to
// the build script to trace a command.
const traceScript = `
echo + %s
%s
`
const tmateScript = `
remote_debug() {
if [ "$?" -ne "0" ]; then
/usr/drone/bin/tmate -F
fi
}
if [ "${DRONE_BUILD_DEBUG}" = "true" ]; then
if [ ! -z "${DRONE_TMATE_HOST}" ]; then
echo "set -g tmate-server-host $DRONE_TMATE_HOST" >> $HOME/.tmate.conf
echo "set -g tmate-server-port $DRONE_TMATE_PORT" >> $HOME/.tmate.conf
echo "set -g tmate-server-rsa-fingerprint $DRONE_TMATE_FINGERPRINT_RSA" >> $HOME/.tmate.conf
echo "set -g tmate-server-ed25519-fingerprint $DRONE_TMATE_FINGERPRINT_ED25519" >> $HOME/.tmate.conf
if [ ! -z "${DRONE_TMATE_AUTHORIZED_KEYS}" ]; then
echo "$DRONE_TMATE_AUTHORIZED_KEYS" > $HOME/.tmate.authorized_keys
echo "set -g tmate-authorized-keys \"$HOME/.tmate.authorized_keys\"" >> $HOME/.tmate.conf
fi
fi
trap remote_debug EXIT
fi
`