__package__ = 'archivebox.extractors'
import re
from pathlib import Path
from typing import Optional
from datetime import datetime, timezone
from ..index.schema import Link, ArchiveResult, ArchiveOutput, ArchiveError
from ..system import run, chmod_file
from ..util import (
enforce_types,
without_fragment,
without_query,
path,
domain,
urldecode,
)
from ..config import (
WGET_ARGS,
TIMEOUT,
SAVE_WGET,
SAVE_WARC,
WGET_BINARY,
WGET_VERSION,
RESTRICT_FILE_NAMES,
CHECK_SSL_VALIDITY,
SAVE_WGET_REQUISITES,
WGET_AUTO_COMPRESSION,
WGET_USER_AGENT,
COOKIES_FILE,
)
from ..logging_util import TimedProgress
[docs]
@enforce_types
def should_save_wget(link: Link, out_dir: Optional[Path]=None, overwrite: Optional[bool]=False) -> bool:
output_path = wget_output_path(link)
out_dir = out_dir or Path(link.link_dir)
if not overwrite and output_path and (out_dir / output_path).exists():
return False
return SAVE_WGET
[docs]
@enforce_types
def save_wget(link: Link, out_dir: Optional[Path]=None, timeout: int=TIMEOUT) -> ArchiveResult:
"""download full site using wget"""
out_dir = out_dir or link.link_dir
if SAVE_WARC:
warc_dir = out_dir / "warc"
warc_dir.mkdir(exist_ok=True)
warc_path = warc_dir / str(int(datetime.now(timezone.utc).timestamp()))
# WGET CLI Docs: https://www.gnu.org/software/wget/manual/wget.html
output: ArchiveOutput = None
cmd = [
WGET_BINARY,
# '--server-response', # print headers for better error parsing
*WGET_ARGS,
'--timeout={}'.format(timeout),
*(['--restrict-file-names={}'.format(RESTRICT_FILE_NAMES)] if RESTRICT_FILE_NAMES else []),
*(['--warc-file={}'.format(str(warc_path))] if SAVE_WARC else []),
*(['--page-requisites'] if SAVE_WGET_REQUISITES else []),
*(['--user-agent={}'.format(WGET_USER_AGENT)] if WGET_USER_AGENT else []),
*(['--load-cookies', str(COOKIES_FILE)] if COOKIES_FILE else []),
*(['--compression=auto'] if WGET_AUTO_COMPRESSION else []),
*([] if SAVE_WARC else ['--timestamping']),
*([] if CHECK_SSL_VALIDITY else ['--no-check-certificate', '--no-hsts']),
link.url,
]
status = 'succeeded'
timer = TimedProgress(timeout, prefix=' ')
try:
result = run(cmd, cwd=str(out_dir), timeout=timeout)
output = wget_output_path(link)
# parse out number of files downloaded from last line of stderr:
# "Downloaded: 76 files, 4.0M in 1.6s (2.52 MB/s)"
output_tail = [
line.strip()
for line in (result.stdout + result.stderr).decode().rsplit('\n', 3)[-3:]
if line.strip()
]
files_downloaded = (
int(output_tail[-1].strip().split(' ', 2)[1] or 0)
if 'Downloaded:' in output_tail[-1]
else 0
)
hints = (
'Got wget response code: {}.'.format(result.returncode),
*output_tail,
)
# Check for common failure cases
if (result.returncode > 0 and files_downloaded < 1) or output is None:
if b'403: Forbidden' in result.stderr:
raise ArchiveError('403 Forbidden (try changing WGET_USER_AGENT)', hints)
if b'404: Not Found' in result.stderr:
raise ArchiveError('404 Not Found', hints)
if b'ERROR 500: Internal Server Error' in result.stderr:
raise ArchiveError('500 Internal Server Error', hints)
raise ArchiveError('Wget failed or got an error from the server', hints)
if (out_dir / output).exists():
chmod_file(output, cwd=str(out_dir))
else:
print(f' {out_dir}/{output}')
raise ArchiveError('Failed to find wget output after running', hints)
except Exception as err:
status = 'failed'
output = err
finally:
timer.end()
return ArchiveResult(
cmd=cmd,
pwd=str(out_dir),
cmd_version=WGET_VERSION,
output=output,
status=status,
**timer.stats,
)
[docs]
@enforce_types
def wget_output_path(link: Link) -> Optional[str]:
"""calculate the path to the wgetted .html file, since wget may
adjust some paths to be different than the base_url path.
See docs on wget --adjust-extension (-E)
"""
# Wget downloads can save in a number of different ways depending on the url:
# https://example.com
# > example.com/index.html
# https://example.com?v=zzVa_tX1OiI
# > example.com/index.html?v=zzVa_tX1OiI.html
# https://www.example.com/?v=zzVa_tX1OiI
# > example.com/index.html?v=zzVa_tX1OiI.html
# https://example.com/abc
# > example.com/abc.html
# https://example.com/abc/
# > example.com/abc/index.html
# https://example.com/abc?v=zzVa_tX1OiI.html
# > example.com/abc?v=zzVa_tX1OiI.html
# https://example.com/abc/?v=zzVa_tX1OiI.html
# > example.com/abc/index.html?v=zzVa_tX1OiI.html
# https://example.com/abc/test.html
# > example.com/abc/test.html
# https://example.com/abc/test?v=zzVa_tX1OiI
# > example.com/abc/test?v=zzVa_tX1OiI.html
# https://example.com/abc/test/?v=zzVa_tX1OiI
# > example.com/abc/test/index.html?v=zzVa_tX1OiI.html
# There's also lots of complexity around how the urlencoding and renaming
# is done for pages with query and hash fragments or extensions like shtml / htm / php / etc
# Since the wget algorithm for -E (appending .html) is incredibly complex
# and there's no way to get the computed output path from wget
# in order to avoid having to reverse-engineer how they calculate it,
# we just look in the output folder read the filename wget used from the filesystem
full_path = without_fragment(without_query(path(link.url))).strip('/')
search_dir = Path(link.link_dir) / domain(link.url).replace(":", "+") / urldecode(full_path)
for _ in range(4):
if search_dir.exists():
if search_dir.is_dir():
html_files = [
f for f in search_dir.iterdir()
if re.search(".+\\.[Ss]?[Hh][Tt][Mm][Ll]?$", str(f), re.I | re.M)
]
if html_files:
return str(html_files[0].relative_to(link.link_dir))
# sometimes wget'd URLs have no ext and return non-html
# e.g. /some/example/rss/all -> some RSS XML content)
# /some/other/url.o4g -> some binary unrecognized ext)
# test this with archivebox add --depth=1 https://getpocket.com/users/nikisweeting/feed/all
last_part_of_url = urldecode(full_path.rsplit('/', 1)[-1])
for file_present in search_dir.iterdir():
if file_present == last_part_of_url:
return str((search_dir / file_present).relative_to(link.link_dir))
# Move up one directory level
search_dir = search_dir.parent
if str(search_dir) == link.link_dir:
break
# check for literally any file present that isnt an empty folder
domain_dir = Path(domain(link.url).replace(":", "+"))
files_within = list((Path(link.link_dir) / domain_dir).glob('**/*.*'))
if files_within:
return str((domain_dir / files_within[-1]).relative_to(link.link_dir))
# fallback to just the domain dir
search_dir = Path(link.link_dir) / domain(link.url).replace(":", "+")
if search_dir.is_dir():
return domain(link.url).replace(":", "+")
# fallback to just the domain dir without port
search_dir = Path(link.link_dir) / domain(link.url).split(":", 1)[0]
if search_dir.is_dir():
return domain(link.url).split(":", 1)[0]
return None