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8674156d1c
### What problem does this PR solve? Fix potential SSRF attack vulnerability ### Type of change - [x] Bug Fix (non-breaking change which fixes an issue) Co-authored-by: liuhua <10215101452@stu.ecun.edu.cn>
68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
#
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# Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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from abc import ABC
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import asyncio
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from crawl4ai import AsyncWebCrawler
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from agent.component.base import ComponentBase, ComponentParamBase
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from api.utils.web_utils import is_valid_url
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class CrawlerParam(ComponentParamBase):
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"""
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Define the Crawler component parameters.
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"""
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def __init__(self):
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super().__init__()
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self.proxy = None
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self.extract_type = "markdown"
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def check(self):
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self.check_valid_value(self.extract_type, "Type of content from the crawler", ['html', 'markdown', 'content'])
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class Crawler(ComponentBase, ABC):
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component_name = "Crawler"
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def _run(self, history, **kwargs):
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ans = self.get_input()
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ans = " - ".join(ans["content"]) if "content" in ans else ""
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if not is_valid_url(ans):
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return Crawler.be_output("URL not valid")
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try:
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result = asyncio.run(self.get_web(ans))
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return Crawler.be_output(result)
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except Exception as e:
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return Crawler.be_output(f"An unexpected error occurred: {str(e)}")
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async def get_web(self, url):
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proxy = self._param.proxy if self._param.proxy else None
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async with AsyncWebCrawler(verbose=True, proxy=proxy) as crawler:
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result = await crawler.arun(
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url=url,
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bypass_cache=True
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)
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if self._param.extract_type == 'html':
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return result.cleaned_html
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elif self._param.extract_type == 'markdown':
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return result.markdown
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elif self._param.extract_type == 'content':
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result.extracted_content
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return result.markdown
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