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feat(agent): set additional login vars, LOGNAME and SHELL #16874

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Merged
merged 3 commits into from
Mar 11, 2025
Merged

feat(agent): set additional login vars, LOGNAME and SHELL #16874

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1d9c414
feat(agent): set additional login vars, LOGNAME and SHELL
mafredri Mar 10, 2025
83f44b6
Update agent/agent_test.go
mafredri Mar 11, 2025
4d29e93
Update agent/agentssh/agentssh.go
mafredri Mar 11, 2025
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48 changes: 48 additions & 0 deletions agent/agent_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,7 @@ import (
"github.com/coder/coder/v2/agent/agentssh"
"github.com/coder/coder/v2/agent/agenttest"
"github.com/coder/coder/v2/agent/proto"
"github.com/coder/coder/v2/agent/usershell"
"github.com/coder/coder/v2/codersdk"
"github.com/coder/coder/v2/codersdk/agentsdk"
"github.com/coder/coder/v2/codersdk/workspacesdk"
Expand Down Expand Up @@ -1193,6 +1194,53 @@ func TestAgent_SSHConnectionEnvVars(t *testing.T) {
}
}

func TestAgent_SSHConnectionLoginVars(t *testing.T) {
t.Parallel()

envInfo := usershell.SystemEnvInfo{}
u, err := envInfo.User()
require.NoError(t, err, "get current user")
shell, err := envInfo.Shell(u.Username)
require.NoError(t, err, "get current shell")

tests := []struct {
key string
want string
}{
{
key: "USER",
want: u.Username,
},
{
key: "LOGNAME",
want: u.Username,
},
{
key: "HOME",
want: u.HomeDir,
},
{
key: "SHELL",
want: shell,
},
}
for _, tt := range tests {
tt := tt
t.Run(tt.key, func(t *testing.T) {
t.Parallel()

session := setupSSHSession(t, agentsdk.Manifest{}, codersdk.ServiceBannerConfig{}, nil)
command := "sh -c 'echo $" + tt.key + "'"
if runtime.GOOS == "windows" {
command = "cmd.exe /c echo %" + tt.key + "%"
}
output, err := session.Output(command)
require.NoError(t, err)
require.Equal(t, tt.want, strings.TrimSpace(string(output)))
})
}
}

func TestAgent_Metadata(t *testing.T) {
t.Parallel()

Expand Down
3 changes: 3 additions & 0 deletions agent/agentssh/agentssh.go
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Expand Up @@ -900,7 +900,10 @@ func (s *Server) CreateCommand(ctx context.Context, script string, env []string,
cmd.Dir = homedir
}
cmd.Env = append(ei.Environ(), env...)
// Set login variables (see `man login`).
cmd.Env = append(cmd.Env, fmt.Sprintf("USER=%s", username))
cmd.Env = append(cmd.Env, fmt.Sprintf("LOGNAME=%s", username))
cmd.Env = append(cmd.Env, fmt.Sprintf("SHELL=%s", shell))

// Set SSH connection environment variables (these are also set by OpenSSH
// and thus expected to be present by SSH clients). Since the agent does
Expand Down
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