feat: Add certificate management tools (6 new MCP tools)
New tools for SSL/TLS certificate management via acme.sh: - haproxy_list_certs: List all certificates with expiry info - haproxy_cert_info: Get detailed certificate info (expiry, issuer, SANs) - haproxy_issue_cert: Issue new certificate via Cloudflare DNS validation - haproxy_renew_cert: Renew specific certificate (with force option) - haproxy_renew_all_certs: Renew all certificates due for renewal - haproxy_delete_cert: Delete certificate from acme.sh and HAProxy Features: - Automatic PEM deployment to HAProxy certs directory - HAProxy hot-reload after certificate changes (USR2 signal) - Cloudflare DNS validation with CF_Token support - Wildcard certificate support Total MCP tools: 22 → 28 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
kaffa
@@ -5,6 +5,7 @@ from .servers import register_server_tools
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from .health import register_health_tools
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from .monitoring import register_monitoring_tools
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from .configuration import register_config_tools
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from .certificates import register_certificate_tools
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def register_all_tools(mcp):
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@@ -18,3 +19,4 @@ def register_all_tools(mcp):
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register_health_tools(mcp)
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register_monitoring_tools(mcp)
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register_config_tools(mcp)
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register_certificate_tools(mcp)
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332
haproxy_mcp/tools/certificates.py
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332
haproxy_mcp/tools/certificates.py
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@@ -0,0 +1,332 @@
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"""Certificate management tools for HAProxy MCP Server."""
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import os
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import subprocess
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from datetime import datetime
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from typing import Annotated
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from pydantic import Field
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from ..config import logger, SUBPROCESS_TIMEOUT, HAPROXY_CONTAINER
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from ..validation import validate_domain
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# Certificate paths
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ACME_SH = os.path.expanduser("~/.acme.sh/acme.sh")
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ACME_HOME = os.path.expanduser("~/.acme.sh")
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CERTS_DIR = "/opt/haproxy/certs"
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# Longer timeout for certificate operations (ACME can be slow)
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CERT_TIMEOUT = 120
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def register_certificate_tools(mcp):
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"""Register certificate management tools with MCP server."""
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@mcp.tool()
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def haproxy_list_certs() -> str:
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"""List all SSL/TLS certificates with expiry information.
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Returns:
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List of certificates with domain, CA, created date, and renewal date
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"""
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try:
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result = subprocess.run(
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[ACME_SH, "--list"],
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capture_output=True, text=True, timeout=SUBPROCESS_TIMEOUT,
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env={**os.environ, "HOME": os.path.expanduser("~")}
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)
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if result.returncode != 0:
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return f"Error: {result.stderr}"
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lines = result.stdout.strip().split("\n")
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if len(lines) <= 1:
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return "No certificates found"
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# Parse and format output
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# Format: Main_Domain KeyLength SAN_Domains Profile CA Created Renew
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certs = []
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for line in lines[1:]: # Skip header
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parts = line.split()
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if len(parts) >= 4:
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domain = parts[0]
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# Find CA and dates by looking for known patterns
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ca = "unknown"
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created = "unknown"
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renew = "unknown"
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for i, part in enumerate(parts):
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if "Google" in part or "LetsEncrypt" in part or "ZeroSSL" in part:
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ca = part
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elif part.endswith("Z") and "T" in part:
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if created == "unknown":
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created = part
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else:
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renew = part
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# Check if PEM exists in HAProxy certs dir
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pem_path = os.path.join(CERTS_DIR, f"{domain}.pem")
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deployed = "deployed" if os.path.exists(pem_path) else "not deployed"
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certs.append(f"• {domain} ({ca})\n Created: {created}\n Renew: {renew}\n Status: {deployed}")
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return "\n\n".join(certs) if certs else "No certificates found"
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except subprocess.TimeoutExpired:
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return "Error: Command timed out"
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except FileNotFoundError:
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return "Error: acme.sh not found"
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except Exception as e:
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return f"Error: {e}"
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@mcp.tool()
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def haproxy_cert_info(
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domain: Annotated[str, Field(description="Domain name to check (e.g., example.com)")]
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) -> str:
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"""Get detailed certificate information for a domain.
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Shows expiry date, issuer, SANs, and file paths.
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"""
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if not validate_domain(domain):
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return "Error: Invalid domain format"
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pem_path = os.path.join(CERTS_DIR, f"{domain}.pem")
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if not os.path.exists(pem_path):
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return f"Error: Certificate not found for {domain}"
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try:
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# Use openssl to get certificate info
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result = subprocess.run(
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["openssl", "x509", "-in", pem_path, "-noout",
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"-subject", "-issuer", "-dates", "-ext", "subjectAltName"],
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capture_output=True, text=True, timeout=SUBPROCESS_TIMEOUT
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)
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if result.returncode != 0:
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return f"Error reading certificate: {result.stderr}"
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# Get file info
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stat = os.stat(pem_path)
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modified = datetime.fromtimestamp(stat.st_mtime).strftime("%Y-%m-%d %H:%M:%S")
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info = [
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f"Certificate: {domain}",
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f"File: {pem_path}",
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f"Modified: {modified}",
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"---",
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result.stdout.strip()
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]
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return "\n".join(info)
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except subprocess.TimeoutExpired:
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return "Error: Command timed out"
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except Exception as e:
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return f"Error: {e}"
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@mcp.tool()
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def haproxy_issue_cert(
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domain: Annotated[str, Field(description="Primary domain (e.g., example.com)")],
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wildcard: Annotated[bool, Field(default=True, description="Include wildcard (*.example.com). Default: true")]
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) -> str:
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"""Issue a new SSL/TLS certificate using acme.sh with Cloudflare DNS.
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Automatically deploys to HAProxy after issuance.
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Example: haproxy_issue_cert("example.com", wildcard=True)
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"""
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if not validate_domain(domain):
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return "Error: Invalid domain format"
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# Check if CF_Token is available
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if not os.environ.get("CF_Token"):
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# Try to load from secrets file
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secrets_file = os.path.expanduser("~/.secrets/cloudflare.ini")
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if os.path.exists(secrets_file):
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try:
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with open(secrets_file) as f:
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for line in f:
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if "=" in line and "token" in line.lower():
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token = line.split("=", 1)[1].strip().strip('"').strip("'")
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os.environ["CF_Token"] = token
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break
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except Exception as e:
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logger.warning("Failed to read Cloudflare token: %s", e)
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if not os.environ.get("CF_Token"):
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return "Error: CF_Token not set. Export CF_Token or add to ~/.secrets/cloudflare.ini"
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# Check if certificate already exists
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cert_dir = os.path.join(ACME_HOME, f"{domain}_ecc")
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if os.path.exists(cert_dir):
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return f"Error: Certificate for {domain} already exists. Use haproxy_renew_cert to renew."
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# Build acme.sh command
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pem_path = os.path.join(CERTS_DIR, f"{domain}.pem")
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reload_cmd = f"cat {ACME_HOME}/{domain}_ecc/fullchain.cer {ACME_HOME}/{domain}_ecc/{domain}.key > {pem_path} && podman exec {HAPROXY_CONTAINER} kill -USR2 1"
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cmd = [
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ACME_SH, "--issue",
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"--dns", "dns_cf",
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"-d", domain
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]
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if wildcard:
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cmd.extend(["-d", f"*.{domain}"])
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cmd.extend(["--reloadcmd", reload_cmd])
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try:
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logger.info("Issuing certificate for %s", domain)
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result = subprocess.run(
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cmd,
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capture_output=True, text=True, timeout=CERT_TIMEOUT,
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env={**os.environ, "HOME": os.path.expanduser("~")}
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)
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if result.returncode != 0:
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error_msg = result.stderr or result.stdout
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return f"Error issuing certificate:\n{error_msg}"
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# Verify deployment
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if os.path.exists(pem_path):
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return f"Certificate issued and deployed for {domain}\nFile: {pem_path}"
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else:
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return f"Certificate issued but deployment may have failed. Check {pem_path}"
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except subprocess.TimeoutExpired:
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return f"Error: Certificate issuance timed out after {CERT_TIMEOUT}s"
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except Exception as e:
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return f"Error: {e}"
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@mcp.tool()
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def haproxy_renew_cert(
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domain: Annotated[str, Field(description="Domain name to renew (e.g., example.com)")],
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force: Annotated[bool, Field(default=False, description="Force renewal even if not due. Default: false")]
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) -> str:
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"""Renew an existing certificate.
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Example: haproxy_renew_cert("example.com", force=True)
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"""
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if not validate_domain(domain):
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return "Error: Invalid domain format"
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cert_dir = os.path.join(ACME_HOME, f"{domain}_ecc")
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if not os.path.exists(cert_dir):
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return f"Error: No certificate found for {domain}. Use haproxy_issue_cert first."
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cmd = [ACME_SH, "--renew", "-d", domain]
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if force:
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cmd.append("--force")
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try:
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logger.info("Renewing certificate for %s", domain)
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result = subprocess.run(
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cmd,
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capture_output=True, text=True, timeout=CERT_TIMEOUT,
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env={**os.environ, "HOME": os.path.expanduser("~")}
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)
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output = result.stdout + result.stderr
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if "Cert success" in output or "Reload success" in output:
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return f"Certificate renewed for {domain}"
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elif "Skip" in output and "Not in renewal period" in output:
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return f"Certificate for {domain} not due for renewal. Use force=True to force renewal."
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elif result.returncode != 0:
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return f"Error renewing certificate:\n{output}"
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else:
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return f"Renewal completed:\n{output}"
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except subprocess.TimeoutExpired:
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return f"Error: Certificate renewal timed out after {CERT_TIMEOUT}s"
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except Exception as e:
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return f"Error: {e}"
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@mcp.tool()
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def haproxy_renew_all_certs() -> str:
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"""Renew all certificates that are due for renewal.
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This runs the acme.sh cron job to check and renew all certificates.
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"""
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try:
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logger.info("Running certificate renewal cron")
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result = subprocess.run(
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[ACME_SH, "--cron"],
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capture_output=True, text=True, timeout=CERT_TIMEOUT * 3, # Longer timeout for all certs
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env={**os.environ, "HOME": os.path.expanduser("~")}
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)
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output = result.stdout + result.stderr
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# Count renewals
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renewed = output.count("Cert success")
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skipped = output.count("Skip")
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if renewed > 0:
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return f"Renewed {renewed} certificate(s), skipped {skipped}"
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elif skipped > 0:
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return f"No certificates due for renewal ({skipped} checked)"
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elif result.returncode != 0:
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return f"Error running renewal:\n{output}"
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else:
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return "Renewal check completed"
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except subprocess.TimeoutExpired:
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return "Error: Renewal cron timed out"
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except Exception as e:
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return f"Error: {e}"
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@mcp.tool()
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def haproxy_delete_cert(
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domain: Annotated[str, Field(description="Domain name to delete certificate for")]
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) -> str:
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"""Delete a certificate from acme.sh and HAProxy.
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WARNING: This permanently removes the certificate. The domain will lose HTTPS.
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Example: haproxy_delete_cert("example.com")
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"""
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if not validate_domain(domain):
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return "Error: Invalid domain format"
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cert_dir = os.path.join(ACME_HOME, f"{domain}_ecc")
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pem_path = os.path.join(CERTS_DIR, f"{domain}.pem")
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if not os.path.exists(cert_dir) and not os.path.exists(pem_path):
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return f"Error: No certificate found for {domain}"
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errors = []
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deleted = []
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# Remove from acme.sh
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if os.path.exists(cert_dir):
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try:
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result = subprocess.run(
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[ACME_SH, "--remove", "-d", domain],
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capture_output=True, text=True, timeout=SUBPROCESS_TIMEOUT,
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env={**os.environ, "HOME": os.path.expanduser("~")}
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)
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if result.returncode == 0:
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deleted.append("acme.sh")
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else:
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errors.append(f"acme.sh removal: {result.stderr}")
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except Exception as e:
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errors.append(f"acme.sh removal: {e}")
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# Remove PEM file
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if os.path.exists(pem_path):
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try:
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os.remove(pem_path)
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deleted.append("HAProxy PEM")
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# Signal HAProxy to reload certs
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subprocess.run(
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["podman", "exec", HAPROXY_CONTAINER, "kill", "-USR2", "1"],
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capture_output=True, timeout=SUBPROCESS_TIMEOUT
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)
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except Exception as e:
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errors.append(f"PEM removal: {e}")
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result_parts = []
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if deleted:
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result_parts.append(f"Deleted from: {', '.join(deleted)}")
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if errors:
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result_parts.append(f"Errors: {'; '.join(errors)}")
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return "\n".join(result_parts) if result_parts else f"Certificate {domain} deleted"
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