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authorBryan Newbold <bnewbold@robocracy.org>2019-03-19 19:07:35 -0700
committerBryan Newbold <bnewbold@robocracy.org>2019-03-19 19:07:35 -0700
commitc038294850e836c5dd24fd3dc89e77065a9d2f85 (patch)
tree3b70b6c6dd8d80d0887c29c53c0e0479c8df8142 /extra/demo_entities
parentd9f9a84957913f0ddd878bb079b423c059b4c81d (diff)
downloadfatcat-c038294850e836c5dd24fd3dc89e77065a9d2f85.tar.gz
fatcat-c038294850e836c5dd24fd3dc89e77065a9d2f85.zip
new importer: wayback_static
Diffstat (limited to 'extra/demo_entities')
-rwxr-xr-xextra/demo_entities/static_wayback.py203
1 files changed, 0 insertions, 203 deletions
diff --git a/extra/demo_entities/static_wayback.py b/extra/demo_entities/static_wayback.py
deleted file mode 100755
index feeba691..00000000
--- a/extra/demo_entities/static_wayback.py
+++ /dev/null
@@ -1,203 +0,0 @@
-#!/usr/bin/env python3
-
-"""
-Helpers to create Web Capture entities from extracted wayback content.
-
-Works as a stand-alone script (for debugging) or as library routines.
-"""
-
-import sys
-import json
-import base64
-import hashlib
-import requests
-import datetime
-import argparse
-from bs4 import BeautifulSoup
-
-from fatcat_client import *
-
-CDX_API_BASE = "https://web.archive.org/cdx/search/cdx"
-GWB_URL_BASE = "https://web.archive.org/web"
-REQ_SESSION = requests.Session()
-
-
-def b32_hex(s):
- """copy/pasta from elsewhere"""
- s = s.strip().split()[0].lower()
- if s.startswith("sha1:"):
- s = s[5:]
- if len(s) != 32:
- return s
- return base64.b16encode(base64.b32decode(s.upper())).lower().decode('utf-8')
-
-def parse_wbm_url(url):
- """Takes a wayback machine URL, and returns a tuple:
-
- (timestamp, datetime, original_url)
- """
- chunks = url.split('/')
- assert len(chunks) >= 6
- assert chunks[2] == 'web.archive.org'
- assert chunks[3] == 'web'
- return (chunks[4],
- parse_wbm_timestamp(chunks[4]),
- '/'.join(chunks[5:]))
-
-def test_parse_wbm_url():
- u = "http://web.archive.org/web/20010712114837/http://www.dlib.org/dlib/june01/reich/06reich.html"
- assert parse_wbm_url(u) == (
- "20010712114837",
- datetime.datetime(2001, 7, 12, 11, 48, 37),
- "http://www.dlib.org/dlib/june01/reich/06reich.html")
-
-def parse_wbm_timestamp(timestamp):
- """
- Takes a complete WBM timestamp string (like "20020327115625") and returns a
- python datetime object (UTC)
- """
- # strip any "im_" or "id_" suffix
- if timestamp.endswith('_'):
- timestamp = timestamp[:-3]
- # inflexible; require the full second-precision timestamp
- assert len(timestamp) == 14
- return datetime.datetime(
- year=int(timestamp[0:4]),
- month=int(timestamp[4:6]),
- day=int(timestamp[6:8]),
- hour=int(timestamp[8:10]),
- minute=int(timestamp[10:12]),
- second=int(timestamp[12:14]))
-
-def test_parse_wbm_timestamp():
- assert parse_wbm_timestamp("20010712114837") == \
- datetime.datetime(2001, 7, 12, 11, 48, 37)
-
-def fetch_wbm(url):
- resp = REQ_SESSION.get(url)
- resp.raise_for_status()
- assert resp.content
- return resp.content
-
-def lookup_cdx(embed_url, verify_hashes=True, cdx_output=None):
- assert embed_url.startswith('/web/')
- embed_url = embed_url.split('/')
- timestamp = embed_url[2]
- if timestamp.endswith('_'):
- timestamp = timestamp[:-3]
- url = '/'.join(embed_url[3:])
- #print((timestamp, url))
- resp = REQ_SESSION.get(CDX_API_BASE, params=dict(
- url=url,
- closest=timestamp,
- sort="closest",
- resolveRevisits="true",
- matchType="exact",
- limit=1,
- ))
- resp.raise_for_status()
- #print(resp.url)
- if resp.content:
- hit = resp.content.decode('utf-8').split('\n')[0]
- if cdx_output:
- cdx_output.write(hit + "\n")
- cdx = hit.split(' ')
- cdx = [x if (x and x != '-') else None for x in cdx]
- webcapture_cdx = WebcaptureEntityCdx(
- surt=cdx[0],
- timestamp=parse_wbm_timestamp(cdx[1]),
- url=cdx[2],
- mimetype=cdx[3],
- status_code=(cdx[4] and int(cdx[4])) or None,
- sha1=b32_hex(cdx[5]),
- sha256=None,
- )
- if verify_hashes:
- resp = REQ_SESSION.get(GWB_URL_BASE + "/{}id_/{}".format(
- cdx[1], # raw timestamp
- webcapture_cdx.url))
- resp.raise_for_status()
- assert webcapture_cdx.sha1 == hashlib.sha1(resp.content).digest().hex()
- webcapture_cdx.sha256 = hashlib.sha256(resp.content).digest().hex()
- return webcapture_cdx
- else:
- return None
-
-def extract_embeds(soup):
-
- embeds = set()
-
- # <link href="">
- for tag in soup.find_all('link', href=True):
- if tag['href'].startswith('/web/'):
- embeds.add(tag['href'])
- # <img src="">
- for tag in soup.find_all('img', src=True):
- if tag['src'].startswith('/web/'):
- embeds.add(tag['src'])
- # <script src="">
- for tag in soup.find_all('script', src=True):
- if tag['src'].startswith('/web/'):
- embeds.add(tag['src'])
-
- return list(embeds)
-
-def static_wayback_webcapture(wayback_url, cdx_output=None):
- """
- Given a complete wayback machine capture URL, like:
-
- http://web.archive.org/web/20010712114837/http://www.dlib.org/dlib/june01/reich/06reich.html
-
- Will return a new ("bare") fatcat webcapture entity python object, with all
- the CDX entries filled in.
- """
-
- wbm_html = fetch_wbm(wayback_url)
- raw_timestamp, timestamp, original_url = parse_wbm_url(wayback_url)
- #with open(rewritten_path, 'r') as fp:
- # soup = BeautifulSoup(fp, "lxml")
- soup = BeautifulSoup(wbm_html, "lxml")
- embeds = extract_embeds(soup)
- cdx_obj = lookup_cdx("/web/{}/{}".format(raw_timestamp, original_url),
- cdx_output=cdx_output)
- cdx_list = [cdx_obj]
- for url in embeds:
- cdx_obj = lookup_cdx(url, cdx_output=cdx_output)
- cdx_list.append(cdx_obj)
- archive_urls = WebcaptureEntityArchiveUrls(
- rel="wayback",
- url="https://web.archive.org/web/",
- )
- wc = WebcaptureEntity(
- cdx=cdx_list,
- timestamp=timestamp,
- original_url=original_url,
- archive_urls=archive_urls,
- release_ids=None)
- return wc
-
-def main():
- parser = argparse.ArgumentParser()
- parser.add_argument('--verbose',
- action='store_true',
- help="verbose output")
- parser.add_argument('wayback_url',
- type=str,
- help="URL of wayback capture to extract from")
- parser.add_argument('--json-output',
- type=argparse.FileType('w'), default=sys.stdout,
- help="where to write out webcapture entity (as JSON)")
- parser.add_argument('--cdx-output',
- type=argparse.FileType('w'), default=None,
- help="(optional) file to write out CDX stub")
-
- args = parser.parse_args()
-
- # entity-to-JSON code; duplicate of entity_to_dict()
- api_client = ApiClient()
- wc = static_wayback_webcapture(args.wayback_url, cdx_output=args.cdx_output)
- wc_dict = api_client.sanitize_for_serialization(wc)
- print(json.dumps(wc_dict))
-
-if __name__ == '__main__':
- main()