Files
SMKRV 6e635f7e2f fix: v2.5.1 security/ML/reliability patch
Security:
- H1 DNS rebinding TOCTOU: validate_endpoint returns (endpoint, resolved_ips);
  create_pinned_session builds an aiohttp session with a custom resolver that
  returns only the pre-validated IPs, closing the re-resolve gap.
- H2/M3 Shared session cookie pollution: integration no longer uses HA shared
  clientsession; isolated session with DummyCookieJar prevents cross-integration
  cookie leaks.
- Cloud metadata / link-local block added to allow_local_network mode to
  prevent IMDS exfiltration on cloud VMs.
- L3 hard cap extended to history.async_get_history (not only service schema).

ML/LLM correctness:
- _is_openai_reasoning_model uses regex with gpt-5-chat* blacklist and handles
  OpenRouter-style openai/ prefix. Future o5/gpt-6 auto-recognized.
- reasoning_effort=minimal for gpt-5 family, low for o-series.
- Gemini 2.5 Pro gets thinking_budget=128 (Pro rejects 0, flash accepts 0).
- Anthropic extracts first type=text block instead of hardcoded content[0].
- /no_think dedup uses word-boundary regex instead of substring.
- DeepSeek-reasoner detected: skips /no_think; preserves reasoning_content.

Reliability:
- Exception chaining added to Gemini-block re-raises.
- Top-level imports for json/re/hashlib (no more lazy stdlib imports).
- allow_local_network logged at INFO, not WARNING on every setup.

Code style:
- PEP 604 type hints across all .py files (dict/list/| None).

No breaking changes for users. Internal API: validate_endpoint return type
changed from str to tuple[str, list[str]].
2026-04-17 01:58:16 +03:00

94 lines
2.9 KiB
Python

"""
Provider registry for HA Text AI integration.
Centralizes provider-specific configuration to avoid dispatch duplication
across __init__.py, config_flow.py, and api_client.py.
@license: MIT (https://opensource.org/licenses/MIT)
@author: SMKRV
@github: https://github.com/smkrv/ha-text-ai
@source: https://github.com/smkrv/ha-text-ai
"""
from __future__ import annotations
from typing import Any
from .const import (
API_PROVIDER_OPENAI,
API_PROVIDER_ANTHROPIC,
API_PROVIDER_DEEPSEEK,
API_PROVIDER_GEMINI,
DEFAULT_MODEL,
DEFAULT_ANTHROPIC_MODEL,
DEFAULT_DEEPSEEK_MODEL,
DEFAULT_GEMINI_MODEL,
DEFAULT_OPENAI_ENDPOINT,
DEFAULT_ANTHROPIC_ENDPOINT,
DEFAULT_DEEPSEEK_ENDPOINT,
DEFAULT_GEMINI_ENDPOINT,
)
PROVIDER_REGISTRY: dict[str, dict[str, Any]] = {
API_PROVIDER_OPENAI: {
"default_model": DEFAULT_MODEL,
"default_endpoint": DEFAULT_OPENAI_ENDPOINT,
"auth_header": "Authorization",
"auth_prefix": "Bearer ",
"check_path": "/models",
},
API_PROVIDER_ANTHROPIC: {
"default_model": DEFAULT_ANTHROPIC_MODEL,
"default_endpoint": DEFAULT_ANTHROPIC_ENDPOINT,
"auth_header": "x-api-key",
"auth_prefix": "",
"check_path": "/v1/models",
"extra_headers": {
"anthropic-version": "2023-06-01",
},
},
API_PROVIDER_DEEPSEEK: {
"default_model": DEFAULT_DEEPSEEK_MODEL,
"default_endpoint": DEFAULT_DEEPSEEK_ENDPOINT,
"auth_header": "Authorization",
"auth_prefix": "Bearer ",
"check_path": "/models",
},
API_PROVIDER_GEMINI: {
"default_model": DEFAULT_GEMINI_MODEL,
"default_endpoint": DEFAULT_GEMINI_ENDPOINT,
"auth_header": "Authorization",
"auth_prefix": "Bearer ",
"check_path": None, # Gemini does not support /models check
},
}
def get_provider_config(provider: str) -> dict[str, Any]:
"""Get full provider configuration.
Raises ValueError for unknown providers to avoid sending
credentials to the wrong endpoint.
"""
if provider not in PROVIDER_REGISTRY:
raise ValueError(f"Unknown API provider: {provider}")
return PROVIDER_REGISTRY[provider]
def get_default_endpoint(provider: str) -> str:
"""Get default API endpoint for a provider."""
return get_provider_config(provider)["default_endpoint"]
def get_default_model(provider: str) -> str:
"""Get default model for a provider."""
return get_provider_config(provider)["default_model"]
def build_auth_headers(provider: str, api_key: str) -> dict[str, str]:
"""Build authentication headers for a provider."""
config = get_provider_config(provider)
headers = {
"Content-Type": "application/json",
"Accept": "application/json",
}
headers[config["auth_header"]] = f"{config['auth_prefix']}{api_key}"
if "extra_headers" in config:
headers.update(config["extra_headers"])
return headers