mirror of
https://github.com/searxng/searxng.git
synced 2024-09-23 20:10:08 +00:00
5276219b9d
Changes made to tineye engine: 1. Importing logging if TYPE_CHECKING is enabled 2. Remove unecessary try-catch around json parsing the response, as this masked the original error and had no immediate benefit 3. Improve error handling explicitely for status code 422 and 400 upfront, deferring json_parsing only for these status codes and successful status codes 4. Unit test all new applicable changes to ensure compatability
223 lines
7.3 KiB
Python
223 lines
7.3 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""This engine implements *Tineye - reverse image search*
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Using TinEye, you can search by image or perform what we call a reverse image
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search. You can do that by uploading an image or searching by URL. You can also
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simply drag and drop your images to start your search. TinEye constantly crawls
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the web and adds images to its index. Today, the TinEye index is over 50.2
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billion images `[tineye.com] <https://tineye.com/how>`_.
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.. hint::
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This SearXNG engine only supports *'searching by URL'* and it does not use
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the official API `[api.tineye.com] <https://api.tineye.com/python/docs/>`_.
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"""
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from typing import TYPE_CHECKING
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from urllib.parse import urlencode
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from datetime import datetime
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from flask_babel import gettext
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if TYPE_CHECKING:
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import logging
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logger = logging.getLogger()
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about = {
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"website": 'https://tineye.com',
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"wikidata_id": 'Q2382535',
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"official_api_documentation": 'https://api.tineye.com/python/docs/',
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"use_official_api": False,
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"require_api_key": False,
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"results": 'JSON',
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}
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engine_type = 'online_url_search'
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""":py:obj:`searx.search.processors.online_url_search`"""
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categories = ['general']
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paging = True
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safesearch = False
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base_url = 'https://tineye.com'
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search_string = '/api/v1/result_json/?page={page}&{query}'
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FORMAT_NOT_SUPPORTED = gettext(
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"Could not read that image url. This may be due to an unsupported file"
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" format. TinEye only supports images that are JPEG, PNG, GIF, BMP, TIFF or WebP."
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)
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"""TinEye error message"""
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NO_SIGNATURE_ERROR = gettext(
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"The image is too simple to find matches. TinEye requires a basic level of"
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" visual detail to successfully identify matches."
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)
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"""TinEye error message"""
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DOWNLOAD_ERROR = gettext("The image could not be downloaded.")
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"""TinEye error message"""
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def request(query, params):
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"""Build TinEye HTTP request using ``search_urls`` of a :py:obj:`engine_type`."""
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params['raise_for_httperror'] = False
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if params['search_urls']['data:image']:
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query = params['search_urls']['data:image']
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elif params['search_urls']['http']:
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query = params['search_urls']['http']
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logger.debug("query URL: %s", query)
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query = urlencode({'url': query})
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# see https://github.com/TinEye/pytineye/blob/main/pytineye/api.py
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params['url'] = base_url + search_string.format(query=query, page=params['pageno'])
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params['headers'].update(
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{
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'Connection': 'keep-alive',
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'Accept-Encoding': 'gzip, defalte, br',
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'Host': 'tineye.com',
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'DNT': '1',
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'TE': 'trailers',
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}
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)
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return params
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def parse_tineye_match(match_json):
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"""Takes parsed JSON from the API server and turns it into a :py:obj:`dict`
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object.
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Attributes `(class Match) <https://github.com/TinEye/pytineye/blob/main/pytineye/api.py>`__
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- `image_url`, link to the result image.
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- `domain`, domain this result was found on.
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- `score`, a number (0 to 100) that indicates how closely the images match.
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- `width`, image width in pixels.
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- `height`, image height in pixels.
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- `size`, image area in pixels.
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- `format`, image format.
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- `filesize`, image size in bytes.
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- `overlay`, overlay URL.
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- `tags`, whether this match belongs to a collection or stock domain.
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- `backlinks`, a list of Backlink objects pointing to the original websites
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and image URLs. List items are instances of :py:obj:`dict`, (`Backlink
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<https://github.com/TinEye/pytineye/blob/main/pytineye/api.py>`__):
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- `url`, the image URL to the image.
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- `backlink`, the original website URL.
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- `crawl_date`, the date the image was crawled.
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"""
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# HINT: there exists an alternative backlink dict in the domains list / e.g.::
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#
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# match_json['domains'][0]['backlinks']
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backlinks = []
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if "backlinks" in match_json:
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for backlink_json in match_json["backlinks"]:
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if not isinstance(backlink_json, dict):
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continue
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crawl_date = backlink_json.get("crawl_date")
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if crawl_date:
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crawl_date = datetime.strptime(crawl_date, '%Y-%m-%d')
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else:
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crawl_date = datetime.min
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backlinks.append(
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{
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'url': backlink_json.get("url"),
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'backlink': backlink_json.get("backlink"),
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'crawl_date': crawl_date,
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'image_name': backlink_json.get("image_name"),
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}
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)
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return {
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'image_url': match_json.get("image_url"),
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'domain': match_json.get("domain"),
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'score': match_json.get("score"),
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'width': match_json.get("width"),
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'height': match_json.get("height"),
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'size': match_json.get("size"),
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'image_format': match_json.get("format"),
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'filesize': match_json.get("filesize"),
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'overlay': match_json.get("overlay"),
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'tags': match_json.get("tags"),
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'backlinks': backlinks,
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}
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def response(resp):
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"""Parse HTTP response from TinEye."""
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# handle the 422 client side errors, and the possible 400 status code error
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if resp.status_code in (400, 422):
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json_data = resp.json()
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suggestions = json_data.get('suggestions', {})
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message = f'HTTP Status Code: {resp.status_code}'
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if resp.status_code == 422:
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s_key = suggestions.get('key', '')
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if s_key == "Invalid image URL":
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# test https://docs.searxng.org/_static/searxng-wordmark.svg
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message = FORMAT_NOT_SUPPORTED
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elif s_key == 'NO_SIGNATURE_ERROR':
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# test https://pngimg.com/uploads/dot/dot_PNG4.png
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message = NO_SIGNATURE_ERROR
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elif s_key == 'Download Error':
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# test https://notexists
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message = DOWNLOAD_ERROR
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else:
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logger.warning("Unknown suggestion key encountered: %s", s_key)
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else: # 400
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description = suggestions.get('description')
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if isinstance(description, list):
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message = ','.join(description)
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# see https://github.com/searxng/searxng/pull/1456#issuecomment-1193105023
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# results.append({'answer': message})
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logger.error(message)
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return []
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# Raise for all other responses
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resp.raise_for_status()
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results = []
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json_data = resp.json()
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for match_json in json_data['matches']:
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tineye_match = parse_tineye_match(match_json)
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if not tineye_match['backlinks']:
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continue
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backlink = tineye_match['backlinks'][0]
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results.append(
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{
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'template': 'images.html',
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'url': backlink['backlink'],
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'thumbnail_src': tineye_match['image_url'],
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'source': backlink['url'],
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'title': backlink['image_name'],
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'img_src': backlink['url'],
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'format': tineye_match['image_format'],
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'widht': tineye_match['width'],
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'height': tineye_match['height'],
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'publishedDate': backlink['crawl_date'],
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}
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)
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# append number of results
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number_of_results = json_data.get('num_matches')
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if number_of_results:
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results.append({'number_of_results': number_of_results})
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return results
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