Steven Tracey
6aacbfbb71
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74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
package main
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import (
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"context"
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"errors"
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"os"
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"os/exec"
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"syscall"
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"time"
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"git.nevets.tech/Steven/certman/common"
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pb "git.nevets.tech/Steven/certman/proto/v1"
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)
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type hookServer struct {
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pb.UnimplementedHookServiceServer
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}
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func (s *hookServer) ExecuteHook(ctx context.Context, req *pb.ExecuteHookRequest) (*pb.ExecuteHookResponse, error) {
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h := req.GetHook()
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if h == nil {
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return &pb.ExecuteHookResponse{Error: "missing hook"}, nil
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}
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// Minimal validation
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if len(h.GetCommand()) == 0 {
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return &pb.ExecuteHookResponse{Error: "command is empty"}, nil
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}
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// Timeout
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timeout := time.Duration(h.GetTimeoutSeconds()) * time.Second
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if timeout <= 0 {
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timeout = 30 * time.Second
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}
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ctx, cancel := context.WithTimeout(ctx, timeout)
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defer cancel()
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// Build command
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cmdArgs := h.GetCommand()
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cmd := exec.CommandContext(ctx, cmdArgs[0], cmdArgs[1:]...)
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if cwd := h.GetCwd(); cwd != "" {
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cmd.Dir = cwd
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}
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// Env: inherit current + overlay provided
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env := os.Environ()
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for k, v := range h.GetEnv() {
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env = append(env, k+"="+v)
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}
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cmd.Env = env
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// Run as user/group if specified (Linux/Unix)
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if h.GetUser() != "" || h.GetGroup() != "" {
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cred, err := common.MakeCredential(h.GetUser(), h.GetGroup())
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if err != nil {
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return &pb.ExecuteHookResponse{Error: brief(err)}, nil
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}
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cmd.SysProcAttr = &syscall.SysProcAttr{
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Credential: cred,
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}
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}
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// We’re intentionally NOT returning stdout/stderr; only a brief error on failure.
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if err := cmd.Run(); err != nil {
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// If context deadline hit, make the error message short and explicit.
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if errors.Is(ctx.Err(), context.DeadlineExceeded) {
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return &pb.ExecuteHookResponse{Error: "hook timed out"}, nil
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}
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return &pb.ExecuteHookResponse{Error: brief(err)}, nil
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}
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return &pb.ExecuteHookResponse{Error: ""}, nil
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}
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