subnet and encoder plugins added. stable diffusion fix. updated requirements.txt

plugins/common.py

@@ -0,0 +1,57 @@
+"""
+Shared utilities for FunguyBot plugins.
+"""
+import html
+import ipaddress
+import socket
+import logging
+
+logger = logging.getLogger(__name__)
+
+# Networks considered unsafe for outbound connections
+_PRIVATE_RANGES = [
+    ipaddress.ip_network('10.0.0.0/8'),
+    ipaddress.ip_network('172.16.0.0/12'),
+    ipaddress.ip_network('192.168.0.0/16'),
+    ipaddress.ip_network('127.0.0.0/8'),
+    ipaddress.ip_network('169.254.0.0/16'),
+    ipaddress.ip_network('0.0.0.0/8'),
+    ipaddress.ip_network('::1/128'),
+    ipaddress.ip_network('fc00::/7'),
+    ipaddress.ip_network('fe80::/10'),
+    ipaddress.ip_network('::/128'),
+]
+
+def html_escape(text: str) -> str:
+    """Escape HTML special characters for safe embedding in messages."""
+    return html.escape(str(text), quote=False)
+
+def collapsible_summary(title: str, body: str, expanded: bool = False) -> str:
+    """Wrap content in a collapsible HTML details block."""
+    open_attr = ' open' if expanded else ''
+    return f"<details{open_attr}>\n<summary><strong>{title}</strong></summary>\n{body}\n</details>"
+
+def is_public_destination(target: str) -> bool:
+    """
+    Returns True if `target` (hostname or IP) does NOT resolve to any
+    private, loopback, or link‑local address.
+    """
+    try:
+        addr = ipaddress.ip_address(target)
+        if any(addr in net for net in _PRIVATE_RANGES):
+            return False
+        return True
+    except ValueError:
+        pass
+
+    try:
+        addrinfo = socket.getaddrinfo(target, None)
+        for _, _, _, _, sockaddr in addrinfo:
+            ip = sockaddr[0]
+            addr = ipaddress.ip_address(ip)
+            if any(addr in net for net in _PRIVATE_RANGES):
+                return False
+        return True
+    except Exception as e:
+        logger.warning(f"Cannot resolve {target}: {e}")
+        return False