fix: SSH sudo without TTY for non-root Linux admin (0.11.1)

Probe commands run without sudo; privileged update uses sudo -S. Add SSH connect and Linux admin API tests.

backend/app/services/ssh_connect.py

@@ -67,11 +67,25 @@ def _truncate_output(text: str) -> str:
     return text[:SSH_OUTPUT_MAX_LEN] + "\n… (truncated)"
 
 
-def _remote_shell_command(user: str, remote_cmd: str) -> str:
+def _shell_single_quote(value: str) -> str:
-    safe_cmd = remote_cmd.replace("'", "'\"'\"'")
+    return "'" + value.replace("'", "'\"'\"'") + "'"
-    if user == "root":
+
-        return f"bash -lc '{safe_cmd}'"
+
-    return f"bash -lc 'sudo -n {safe_cmd} 2>/dev/null || sudo {safe_cmd}'"
+def _remote_shell_command(
+    user: str,
+    remote_cmd: str,
+    password: str,
+    *,
+    need_root: bool = False,
+) -> str:
+    """Build remote shell command. Sudo only when need_root and user is not root."""
+    safe_cmd = _shell_single_quote(remote_cmd)
+    if user == "root" or not need_root:
+        return f"bash -lc {safe_cmd}"
+
+    safe_pw = _shell_single_quote(password)
+    inner = f"printf '%s\\n' {safe_pw} | sudo -S -p '' bash -lc {safe_cmd}"
+    return f"bash -lc {_shell_single_quote(inner)}"
 
 
 def run_ssh_command(
@@ -82,6 +96,7 @@ def run_ssh_command(
     remote_cmd: str,
     connect_timeout_sec: int = 15,
     command_timeout_sec: int = 600,
+    need_root: bool = False,
 ) -> SshCommandResult:
     target = target.strip()
     user = user.strip()
@@ -95,7 +110,7 @@ def run_ssh_command(
 
     client = paramiko.SSHClient()
     client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
-    shell_cmd = _remote_shell_command(user, remote_cmd)
+    shell_cmd = _remote_shell_command(user, remote_cmd, password, need_root=need_root)
 
     try:
         client.connect(
@@ -209,4 +224,5 @@ def run_ssh_monitor_update(
         password=password,
         remote_cmd=script,
         command_timeout_sec=900,
+        need_root=True,
     )

backend/app/version.py

@@ -1,5 +1,5 @@
 """Единый источник версии SAC (API, health, логи, OpenAPI)."""
 
 APP_NAME = "Security Alert Center"
-APP_VERSION = "0.11.0"
+APP_VERSION = "0.11.1"
 APP_VERSION_LABEL = f"{APP_NAME} v.{APP_VERSION}"

backend/tests/test_health.py

@@ -4,6 +4,6 @@ from app.version import APP_NAME, APP_VERSION, APP_VERSION_LABEL
 
 
 def test_version_constants():
-    assert APP_VERSION == "0.11.0"
+    assert APP_VERSION == "0.11.1"
     assert APP_NAME == "Security Alert Center"
-    assert APP_VERSION_LABEL == "Security Alert Center v.0.11.0"
+    assert APP_VERSION_LABEL == "Security Alert Center v.0.11.1"

backend/tests/test_linux_admin_settings.py

@@ -1,16 +1,68 @@
-"""Linux admin settings and SSH host actions."""
+"""Additional Linux admin API tests."""
 
 from unittest.mock import patch
 
+
+def test_get_linux_admin_settings_env_default(jwt_headers, client, monkeypatch):
+    monkeypatch.setenv("SAC_LINUX_ADMIN_USER", "")
+    monkeypatch.setenv("SAC_LINUX_ADMIN_PASSWORD", "")
+    from app.config import get_settings
+
+    get_settings.cache_clear()
+
+    response = client.get("/api/v1/settings/linux-admin", headers=jwt_headers)
+    assert response.status_code == 200
+    body = response.json()
+    assert body["configured"] is False
+    assert body["source"] == "env"
+
+
+def test_host_ssh_test_requires_admin(jwt_monitor_headers, client):
+    response = client.post("/api/v1/hosts/1/actions/ssh-test", headers=jwt_monitor_headers)
+    assert response.status_code == 403
+
+
+def test_host_ssh_test_not_linux(jwt_headers, client, db_session, monkeypatch):
+    monkeypatch.setenv("SAC_LINUX_ADMIN_USER", "root")
+    monkeypatch.setenv("SAC_LINUX_ADMIN_PASSWORD", "pw")
+    from app.config import get_settings
     from app.models import Host
-from app.models.ui_settings import UI_SETTINGS_ROW_ID, UiSettings
+
-from app.services.ssh_connect import SshCommandResult, iter_ssh_targets
+    get_settings.cache_clear()
+
+    host = Host(hostname="PC", os_family="windows", product="rdp-login-monitor", ipv4="10.0.0.1")
+    db_session.add(host)
+    db_session.commit()
+    db_session.refresh(host)
+
+    response = client.post(f"/api/v1/hosts/{host.id}/actions/ssh-test", headers=jwt_headers)
+    assert response.status_code == 400
+    assert "not Linux" in response.json()["detail"]
+
+
+def test_host_agent_update_not_configured(jwt_headers, client, db_session, monkeypatch):
+    monkeypatch.setenv("SAC_LINUX_ADMIN_USER", "")
+    monkeypatch.setenv("SAC_LINUX_ADMIN_PASSWORD", "")
+    from app.config import get_settings
+    from app.models import Host
+
+    get_settings.cache_clear()
+
+    host = Host(hostname="ubabuba", os_family="linux", product="ssh-monitor", ipv4="10.0.0.5")
+    db_session.add(host)
+    db_session.commit()
+    db_session.refresh(host)
+
+    response = client.post(f"/api/v1/hosts/{host.id}/actions/agent-update", headers=jwt_headers)
+    assert response.status_code == 400
+    assert "not configured" in response.json()["detail"].lower()
 
 
 def test_put_linux_admin_settings_persists(jwt_headers, client, db_session, monkeypatch):
     monkeypatch.setenv("SAC_LINUX_ADMIN_USER", "")
     monkeypatch.setenv("SAC_LINUX_ADMIN_PASSWORD", "")
     from app.config import get_settings
+    from app.models.ui_settings import UI_SETTINGS_ROW_ID, UiSettings
 
     get_settings.cache_clear()
 
@@ -24,6 +76,7 @@ def test_put_linux_admin_settings_persists(jwt_headers, client, db_session, monk
     assert body["configured"] is True
     assert body["user"] == "root"
     assert body["source"] == "db"
+    assert body["password_hint"]
 
     row = db_session.get(UiSettings, UI_SETTINGS_ROW_ID)
     assert row is not None
@@ -31,31 +84,50 @@ def test_put_linux_admin_settings_persists(jwt_headers, client, db_session, monk
     assert row.linux_admin_password == "secret-pass"
 
 
-def test_iter_ssh_targets_hostname_before_ip():
+def test_host_ssh_test_success(jwt_headers, client, db_session, monkeypatch):
-    host = Host(
-        hostname="ubabuba",
-        os_family="linux",
-        product="ssh-monitor",
-        ipv4="10.0.0.5",
-    )
-    targets = iter_ssh_targets(host)
-    assert targets[0] == "ubabuba"
-    assert targets[-1] == "10.0.0.5"
-
-
-def test_host_agent_update_via_ssh(jwt_headers, client, db_session, monkeypatch):
     monkeypatch.setenv("SAC_LINUX_ADMIN_USER", "root")
     monkeypatch.setenv("SAC_LINUX_ADMIN_PASSWORD", "pw")
     from app.config import get_settings
+    from app.models import Host
+    from app.services.ssh_connect import SshCommandResult
 
     get_settings.cache_clear()
 
-    host = Host(
+    host = Host(hostname="ubabuba", os_family="linux", product="ssh-monitor", ipv4="10.0.0.5")
-        hostname="ubabuba",
+    db_session.add(host)
-        os_family="linux",
+    db_session.commit()
-        product="ssh-monitor",
+    db_session.refresh(host)
-        ipv4="10.0.0.5",
+
+    with patch("app.api.v1.hosts.test_ssh_connection") as mock_test:
+        mock_test.return_value = SshCommandResult(
+            ok=True,
+            message="SSH OK, hostname=ubabuba",
+            target="ubabuba",
+            stdout="ubabuba\n",
+            exit_code=0,
         )
+        response = client.post(
+            f"/api/v1/hosts/{host.id}/actions/ssh-test",
+            headers=jwt_headers,
+        )
+
+    assert response.status_code == 200
+    body = response.json()
+    assert body["ok"] is True
+    assert "hostname=ubabuba" in body["message"]
+    assert body["target"] == "ubabuba"
+
+
+def test_host_agent_update_success(jwt_headers, client, db_session, monkeypatch):
+    monkeypatch.setenv("SAC_LINUX_ADMIN_USER", "root")
+    monkeypatch.setenv("SAC_LINUX_ADMIN_PASSWORD", "pw")
+    from app.config import get_settings
+    from app.models import Host
+    from app.services.ssh_connect import SshCommandResult
+
+    get_settings.cache_clear()
+
+    host = Host(hostname="ubabuba", os_family="linux", product="ssh-monitor", ipv4="10.0.0.5")
     db_session.add(host)
     db_session.commit()
     db_session.refresh(host)
@@ -63,9 +135,9 @@ def test_host_agent_update_via_ssh(jwt_headers, client, db_session, monkeypatch)
     with patch("app.api.v1.hosts.run_ssh_monitor_update") as mock_update:
         mock_update.return_value = SshCommandResult(
             ok=True,
-            message="SSH OK",
+            message="SSH OK (ubabuba), exit 0\nSUMMARY updated",
             target="ubabuba",
-            stdout="updated",
+            stdout="SUMMARY updated\n",
             exit_code=0,
         )
         response = client.post(

backend/tests/test_ssh_connect.py

@@ -0,0 +1,170 @@
+"""SSH connect service tests (paramiko mocked via sys.modules)."""
+
+import sys
+from unittest.mock import MagicMock
+
+from app.models import Host
+from app.services import ssh_connect
+from app.services.ssh_connect import (
+    HostNotLinuxError,
+    HostTargetMissingError,
+    _remote_shell_command,
+    iter_ssh_targets,
+    run_ssh_command,
+    run_ssh_monitor_update,
+)
+
+
+class _AuthError(Exception):
+    pass
+
+
+def _install_fake_paramiko(monkeypatch, *, connect_side_effect=None, exec_setup=None):
+    mock_client_cls = MagicMock()
+    client = MagicMock()
+    if connect_side_effect is not None:
+        client.connect.side_effect = connect_side_effect
+    if exec_setup is not None:
+        exec_setup(client)
+    mock_client_cls.return_value = client
+
+    fake = MagicMock()
+    fake.SSHClient = mock_client_cls
+    fake.AutoAddPolicy = MagicMock()
+    fake.AuthenticationException = _AuthError
+    monkeypatch.setitem(sys.modules, "paramiko", fake)
+    return client
+
+
+def test_remote_shell_command_non_root_probe_has_no_sudo():
+    cmd = _remote_shell_command("deploy", "hostname", "secret", need_root=False)
+    assert "sudo" not in cmd
+    assert "hostname" in cmd
+
+
+def test_remote_shell_command_non_root_privileged_uses_sudo_s():
+    cmd = _remote_shell_command("deploy", "/opt/scripts/update_ssh_monitor.sh", "secret", need_root=True)
+    assert "sudo -S" in cmd
+    assert "secret" in cmd
+    assert "update_ssh_monitor.sh" in cmd
+
+
+def test_remote_shell_command_root_skips_sudo_even_when_need_root():
+    cmd = _remote_shell_command("root", "/opt/scripts/update_ssh_monitor.sh", "secret", need_root=True)
+    assert "sudo" not in cmd
+
+
+def test_probe_ssh_connection_non_root_does_not_use_sudo(monkeypatch):
+    captured: list[str] = []
+
+    def setup(client):
+        stdout = MagicMock()
+        stdout.read.return_value = b"ubabuba\n"
+        stdout.channel.recv_exit_status.return_value = 0
+        stderr = MagicMock()
+        stderr.read.return_value = b""
+
+        def capture_exec(cmd, **kwargs):
+            captured.append(cmd)
+            return (None, stdout, stderr)
+
+        client.exec_command.side_effect = capture_exec
+
+    _install_fake_paramiko(monkeypatch, exec_setup=setup)
+
+    result = ssh_connect.test_ssh_connection(target="10.10.36.9", user="deploy", password="pw")
+    assert result.ok is True
+    assert captured
+    assert "sudo" not in captured[0]
+
+
+def test_iter_ssh_targets_rejects_windows():
+    host = Host(hostname="PC", os_family="windows", product="rdp-login-monitor", ipv4="1.2.3.4")
+    try:
+        iter_ssh_targets(host)
+        raise AssertionError("expected HostNotLinuxError")
+    except HostNotLinuxError:
+        pass
+
+
+def test_iter_ssh_targets_requires_address():
+    host = Host(hostname="", os_family="linux", product="ssh-monitor", ipv4=None)
+    try:
+        iter_ssh_targets(host)
+        raise AssertionError("expected HostTargetMissingError")
+    except HostTargetMissingError:
+        pass
+
+
+def test_probe_ssh_connection_success(monkeypatch):
+    def setup(client):
+        stdout = MagicMock()
+        stdout.read.return_value = b"ubabuba\n"
+        stdout.channel.recv_exit_status.return_value = 0
+        stderr = MagicMock()
+        stderr.read.return_value = b""
+        client.exec_command.return_value = (None, stdout, stderr)
+
+    client = _install_fake_paramiko(monkeypatch, exec_setup=setup)
+
+    result = ssh_connect.test_ssh_connection(target="ubabuba", user="root", password="pw")
+    assert result.ok is True
+    assert "hostname=ubabuba" in result.message
+    client.connect.assert_called_once()
+    client.close.assert_called_once()
+
+
+def test_run_ssh_command_auth_failure(monkeypatch):
+    client = _install_fake_paramiko(monkeypatch, connect_side_effect=_AuthError("bad creds"))
+
+    result = run_ssh_command(target="10.0.0.1", user="root", password="wrong", remote_cmd="hostname")
+    assert result.ok is False
+    assert "auth failed" in result.message.lower()
+    client.close.assert_called_once()
+
+
+def test_run_ssh_monitor_update_missing_script(monkeypatch):
+    monkeypatch.setattr(
+        ssh_connect,
+        "run_ssh_command",
+        lambda **kwargs: ssh_connect.SshCommandResult(
+            ok=True,
+            message="ok",
+            target="h",
+            stdout="missing\n",
+        ),
+    )
+
+    result = run_ssh_monitor_update(target="ubabuba", user="root", password="pw")
+    assert result.ok is False
+    assert "not found" in result.message.lower()
+
+
+def test_run_ssh_monitor_update_runs_script(monkeypatch):
+    calls = 0
+
+    def fake_run(**kwargs):
+        nonlocal calls
+        calls += 1
+        if calls == 1:
+            return ssh_connect.SshCommandResult(
+                ok=True,
+                message="ok",
+                target="h",
+                stdout="ready\n",
+            )
+        assert kwargs["remote_cmd"] == "/opt/scripts/update_ssh_monitor.sh"
+        assert kwargs.get("need_root") is True
+        return ssh_connect.SshCommandResult(
+            ok=True,
+            message="SSH OK",
+            target="ubabuba",
+            stdout="SUMMARY updated\n",
+            exit_code=0,
+        )
+
+    monkeypatch.setattr(ssh_connect, "run_ssh_command", fake_run)
+
+    result = run_ssh_monitor_update(target="ubabuba", user="root", password="pw")
+    assert result.ok is True
+    assert calls == 2

frontend/src/version.ts

@@ -1,4 +1,4 @@
 /** Fallback до загрузки /health; при релизе держите в sync с backend/app/version.py */
 export const APP_NAME = "Security Alert Center";
-export const APP_VERSION = "0.11.0";
+export const APP_VERSION = "0.11.1";
 export const APP_VERSION_LABEL = `${APP_NAME} v.${APP_VERSION}`;