woodpecker/pipeline/backend/common/script_posix.go

74 lines
1.9 KiB
Go

// Copyright 2022 Woodpecker Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package common
import (
"bytes"
"fmt"
"text/template"
"al.essio.dev/pkg/shellescape"
)
// generateScriptPosix is a helper function that generates a step script
// for a linux container using the given.
func generateScriptPosix(commands []string, workDir string) string {
var buf bytes.Buffer
if err := setupScriptTmpl.Execute(&buf, map[string]string{
"WorkDir": workDir,
}); err != nil {
// should never happen but well we have an error to trance
return fmt.Sprintf("echo 'failed to generate posix script from commands: %s'; exit 1", err.Error())
}
for _, command := range commands {
buf.WriteString(fmt.Sprintf(
traceScript,
shellescape.Quote(command),
command,
))
}
return buf.String()
}
// setupScriptProto is a helper script this is added to the step script to ensure
// a minimum set of environment variables are set correctly.
const setupScriptProto = `
if [ -n "$CI_NETRC_MACHINE" ]; then
cat <<EOF > $HOME/.netrc
machine $CI_NETRC_MACHINE
login $CI_NETRC_USERNAME
password $CI_NETRC_PASSWORD
EOF
chmod 0600 $HOME/.netrc
fi
unset CI_NETRC_USERNAME
unset CI_NETRC_PASSWORD
unset CI_SCRIPT
mkdir -p "{{.WorkDir}}"
cd "{{.WorkDir}}"
`
var setupScriptTmpl, _ = template.New("").Parse(setupScriptProto)
// traceScript is a helper script that is added to the step script
// to trace a command.
const traceScript = `
echo + %s
%s
`