fix: skip invalid/unresolvable SSH targets before connect (0.11.2)

Do not use human display_name as SSH host; skip short names that do not resolve on SAC (ubabuba -> IPv4 only).

backend/app/services/ssh_connect.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import re
 import socket
 from dataclasses import dataclass
 
@@ -9,6 +10,7 @@ from app.models import Host
 
 SSH_MONITOR_UPDATE_SCRIPT = "/opt/scripts/update_ssh_monitor.sh"
 SSH_OUTPUT_MAX_LEN = 12_000
+_IPV4_RE = re.compile(r"^\d{1,3}(?:\.\d{1,3}){3}$")
 
 
 class LinuxAdminNotConfiguredError(Exception):
@@ -39,6 +41,32 @@ def is_linux_host(host: Host) -> bool:
     return (host.product or "").strip() == "ssh-monitor"
 
 
+def _is_ipv4(value: str) -> bool:
+    return bool(_IPV4_RE.match(value.strip()))
+
+
+def _looks_like_ssh_hostname(value: str) -> bool:
+    """Короткое имя или FQDN; не человекочитаемый display_name вроде «Ubabuba Kalina (10.10.36.9)»."""
+    text = value.strip()
+    if not text or " " in text or "(" in text or ")" in text:
+        return False
+    if _is_ipv4(text):
+        return True
+    if len(text) > 253:
+        return False
+    return all(ch.isalnum() or ch in ".-_" for ch in text)
+
+
+def _ssh_name_resolves(name: str) -> bool:
+    if _is_ipv4(name):
+        return True
+    try:
+        socket.getaddrinfo(name.strip(), 22, type=socket.SOCK_STREAM)
+        return True
+    except OSError:
+        return False
+
+
 def iter_ssh_targets(host: Host) -> list[str]:
     if not is_linux_host(host):
         raise HostNotLinuxError("Host is not Linux")
@@ -50,14 +78,26 @@ def iter_ssh_targets(host: Host) -> list[str]:
         text = (value or "").strip()
         if not text or text.casefold() in seen:
             return
+        if not _looks_like_ssh_hostname(text):
+            return
+        if not _ssh_name_resolves(text):
+            return
         seen.add(text.casefold())
         ordered.append(text)
 
     add(host.hostname)
-    add(host.display_name)
+
+    inventory = host.inventory if isinstance(host.inventory, dict) else {}
+    computer_name = inventory.get("computer_name")
+    if isinstance(computer_name, str):
+        add(computer_name)
+
+    if host.display_name and _looks_like_ssh_hostname(host.display_name):
+        add(host.display_name)
+
     add(host.ipv4)
     if not ordered:
-        raise HostTargetMissingError("Host has no hostname or IPv4 for SSH")
+        raise HostTargetMissingError("Host has no resolvable hostname or IPv4 for SSH")
     return ordered
 
 

backend/app/version.py

@@ -1,5 +1,5 @@
 """Единый источник версии SAC (API, health, логи, OpenAPI)."""
 
 APP_NAME = "Security Alert Center"
-APP_VERSION = "0.11.1"
+APP_VERSION = "0.11.2"
 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 == "0.11.1"
+    assert APP_VERSION == "0.11.2"
     assert APP_NAME == "Security Alert Center"
-    assert APP_VERSION_LABEL == "Security Alert Center v.0.11.1"
+    assert APP_VERSION_LABEL == "Security Alert Center v.0.11.2"

backend/tests/test_ssh_connect.py

@@ -78,6 +78,35 @@ def test_probe_ssh_connection_non_root_does_not_use_sudo(monkeypatch):
     assert "sudo" not in captured[0]
 
 
+def test_iter_ssh_targets_skips_human_display_name(monkeypatch):
+    monkeypatch.setattr(ssh_connect, "_ssh_name_resolves", lambda name: True)
+    host = Host(
+        hostname="ubabuba",
+        display_name="Ubabuba Kalina (10.10.36.9)",
+        os_family="linux",
+        product="ssh-monitor",
+        ipv4="10.10.36.9",
+    )
+    targets = iter_ssh_targets(host)
+    assert "Ubabuba Kalina (10.10.36.9)" not in targets
+    assert "10.10.36.9" in targets
+
+
+def test_iter_ssh_targets_skips_unresolvable_hostname(monkeypatch):
+    def resolves(name: str) -> bool:
+        return ssh_connect._is_ipv4(name)
+
+    monkeypatch.setattr(ssh_connect, "_ssh_name_resolves", resolves)
+    host = Host(
+        hostname="ubabuba",
+        os_family="linux",
+        product="ssh-monitor",
+        ipv4="10.10.36.9",
+    )
+    targets = iter_ssh_targets(host)
+    assert targets == ["10.10.36.9"]
+
+
 def test_iter_ssh_targets_rejects_windows():
     host = Host(hostname="PC", os_family="windows", product="rdp-login-monitor", ipv4="1.2.3.4")
     try: