493 lines
12 KiB
Python
493 lines
12 KiB
Python
# Copyright 2011 Corentin Chary <corentin.chary@gmail.com>
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# Copyright 2020-2023 src_prepare group
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# Distributed under the terms of the GNU General Public License v2
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import errno
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import os
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import re
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import urllib
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import urllib.error
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import urllib.parse
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import urllib.request
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import urllib.robotparser
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from xml.dom.minidom import Document
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import portage
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from portage import dep
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import euscan
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from euscan import BLACKLIST_VERSIONS, CONFIG, ROBOTS_TXT_BLACKLIST_DOMAINS
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from euscan.version import parse_version
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def htop_vercmp(a, b):
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def fixver(v):
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if v in ["0.11", "0.12", "0.13"]:
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v = "0.1." + v[3:]
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return v
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return simple_vercmp(fixver(a), fixver(b))
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VERSION_CMP_PACKAGE_QUIRKS = {"sys-process/htop": htop_vercmp}
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_v_end = r"(?:(?:-|_)(?:pre|p|beta|b|alpha|a|rc|r)\d*)"
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_v = r"((?:\d+)(?:(?:\.\d+)*)(?:[a-zA-Z]*?)(?:" + _v_end + "*))"
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def cast_int_components(version):
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for i, obj in enumerate(version):
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try:
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version[i] = int(obj)
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except ValueError:
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pass
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return version
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def simple_vercmp(a, b):
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if a == b:
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return 0
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# For sane versions
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r = portage.versions.vercmp(a, b)
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if r is not None:
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return r
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# Fallback
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a = parse_version(a)
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b = parse_version(b)
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if a < b:
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return -1
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else:
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return 1
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def vercmp(package, a, b):
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if package in VERSION_CMP_PACKAGE_QUIRKS:
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return VERSION_CMP_PACKAGE_QUIRKS[package](a, b)
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return simple_vercmp(a, b)
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def version_is_nightly(a, b):
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a = parse_version(a)
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b = parse_version(b)
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# Try to skip nightly builds when not wanted (www-apps/moodle)
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if len(a) != len(b) and len(b) == 2 and len(b[0]) == len("yyyymmdd"):
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if b[0][:4] != "0000":
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return True
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return False
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def version_blacklisted(cp, version):
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rule = None
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cpv = "%s-%s" % (cp, version)
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# Check that the generated cpv can be used by portage
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if not portage.versions.catpkgsplit(cpv):
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return False
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for bv in BLACKLIST_VERSIONS:
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if dep.match_from_list(bv, [cpv]):
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rule = bv
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None
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if rule:
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euscan.output.einfo("%s is blacklisted by rule %s" % (cpv, rule))
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return rule is not None
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def version_change_end_sep(version):
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match = re.match(r".*(%s)" % _v_end, version)
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if not match:
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return None
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end = match.group(1)
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if end[0] == "_":
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newend = end.replace("_", "-")
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elif end[0] == "-":
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newend = end.replace("-", "_")
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else:
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return None
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return version.replace(end, newend)
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def version_filtered(cp, base, version, vercmp=vercmp):
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if vercmp(cp, base, version) >= 0:
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return True
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if version_blacklisted(cp, version):
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return True
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if version_is_nightly(base, version):
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return True
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return False
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def generate_templates_vars(version):
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ret = []
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part = split_version(version)
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for i in range(2, len(part)):
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ver = []
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var = []
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for j in range(i):
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ver.append(str(part[j]))
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var.append("${%d}" % j)
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ret.append((".".join(ver), ".".join(var)))
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ret.append((version, "${PV}"))
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ret.reverse()
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return ret
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def template_from_url(url, version):
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prefix, chunks = url.split("://")
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chunks = chunks.split("/")
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for i in range(len(chunks)):
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chunk = chunks[i]
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subs = generate_templates_vars(version)
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for sub in subs:
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chunk = chunk.replace(sub[0], sub[1])
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chunks[i] = chunk
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return prefix + "://" + "/".join(chunks)
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def url_from_template(url, version):
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components = split_version(version)
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url = url.replace("${PV}", version)
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for i in range(len(components)):
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url = url.replace("${%d}" % i, str(components[i]))
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return url
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# Stolen from distutils.LooseVersion
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# Used for brute force to increment the version
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def split_version(version):
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component_re = re.compile(r"(\d+ | [a-z]+ | \.)", re.VERBOSE)
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components = [x for x in component_re.split(version) if x and x != "."]
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for i in range(len(components)):
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try:
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components[i] = int(components[i])
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except ValueError:
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pass
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return components
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def join_version(components):
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version = ""
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for i in range(len(components)):
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version += str(components[i])
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if i >= len(components) - 1:
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break
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if not isinstance(components[i], str) and not isinstance(
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components[i + 1], str
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):
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version += "."
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return version
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def increment_version(components, level):
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n = len(components)
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if level > n - 1 or level < 0:
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raise Exception
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for i in range(n, level + 1, -1):
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if isinstance(components[i - 1], int):
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components[i - 1] = 0
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if isinstance(components[level], int):
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components[level] += 1
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return components
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def gen_versions(components, level):
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n = len(components)
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depth = level
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level = min(level, n)
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if not n:
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return []
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versions = []
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for i in range(n, n - level, -1):
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increment_version(components, i - 1)
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for j in range(depth):
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versions.append(list(components))
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increment_version(components, i - 1)
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return versions
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def timeout_for_url(url):
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if "sourceforge" in url:
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timeout = 15
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else:
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timeout = 5
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return timeout
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class HeadRequest(urllib.request.Request):
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def get_method(self):
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return "HEAD"
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# RobotParser cache
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rpcache = {}
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def urlallowed(url):
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if CONFIG["skip-robots-txt"]:
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return True
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protocol, domain = urllib.parse.urlparse(url)[:2]
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for bd in ROBOTS_TXT_BLACKLIST_DOMAINS:
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if re.match(bd, domain):
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return True
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for d in ["sourceforge", "berlios", "github.com"]:
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if d in domain:
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return True
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if protocol == "ftp":
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return True
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baseurl = "%s://%s" % (protocol, domain)
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robotsurl = urllib.parse.urljoin(baseurl, "robots.txt")
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if baseurl in rpcache:
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rp = rpcache[baseurl]
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else:
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from socket import getdefaulttimeout, setdefaulttimeout
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timeout = getdefaulttimeout()
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setdefaulttimeout(5)
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rp = urllib.robotparser.RobotFileParser()
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rp.set_url(robotsurl)
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try:
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rp.read()
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rpcache[baseurl] = rp
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except IOError:
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rp = None
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setdefaulttimeout(timeout)
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return rp.can_fetch(CONFIG["user-agent"], url) if rp else True
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def urlopen(url, timeout=None, verb="GET"):
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if not urlallowed(url):
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euscan.output.einfo("Url '%s' blocked by robots.txt" % url)
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return None
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if not timeout:
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timeout = timeout_for_url(url)
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if verb == "GET":
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request = urllib.request.Request(url)
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elif verb == "HEAD":
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request = HeadRequest(url)
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else:
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return None
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request.add_header("User-Agent", CONFIG["user-agent"])
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handlers = []
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if CONFIG["cache"]:
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from cache import CacheHandler
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handlers.append(CacheHandler(CONFIG["cache"]))
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if CONFIG["verbose"]:
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debuglevel = CONFIG["verbose"] - 1
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handlers.append(urllib.request.HTTPHandler(debuglevel=debuglevel))
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opener = urllib.request.build_opener(*handlers)
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return opener.open(request, None, timeout)
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def tryurl(fileurl, template):
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result = True
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if not urlallowed(fileurl):
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euscan.output.einfo("Url '%s' blocked by robots.txt" % fileurl)
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return None
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euscan.output.ebegin("Trying: " + fileurl)
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try:
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basename = os.path.basename(fileurl)
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fp = urlopen(fileurl, verb="HEAD")
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if not fp:
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euscan.output.eend(errno.EPERM)
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return None
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headers = fp.info()
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# Some URLs return Content-disposition with different filename
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# Disable check for now (I have no seen false positives)
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# if 'Content-disposition' in headers and \
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# basename not in headers['Content-disposition']:
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# result = None
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if "Content-Length" in headers and headers["Content-Length"] == "0":
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result = None
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elif "Content-Type" in headers and "text/html" in headers["Content-Type"]:
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result = None
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elif (
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"Content-Type" in headers
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and "application/x-httpd-php" in headers["Content-Type"]
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):
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result = None
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elif fp.geturl() != fileurl:
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regex = regex_from_template(template)
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baseregex = regex_from_template(os.path.basename(template))
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basename2 = os.path.basename(fp.geturl())
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# Redirect to another (earlier?) version
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if basename != basename2 and (
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re.match(regex, fp.geturl()) or re.match(baseregex, basename2)
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):
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result = None
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if result:
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result = (fp.geturl(), fp.info())
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except urllib.error.URLError:
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result = None
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except IOError:
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result = None
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euscan.output.eend(errno.ENOENT if not result else 0)
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return result
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def regex_from_template(template):
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# Escape
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regexp = re.escape(template)
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# Unescape specific stuff
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regexp = regexp.replace("\$\{", "${")
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regexp = regexp.replace("\}", "}")
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regexp = regexp.replace("}\.$", "}.$")
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# Replace ${\d+}
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# regexp = regexp.replace('${0}', r'([\d]+?)')
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regexp = re.sub(r"(\$\{\d+\}(\.?))+", r"([\\w\.]+?)", regexp)
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# regexp = re.sub(r'(\$\{\d+\}\.?)+', r'([\w]+?)', regexp)
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# regexp = re.sub(r'(\$\{\d+\}\.+)+', '(.+?)\.', regexp)
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# regexp = re.sub(r'(\$\{\d+\})+', '(.+?)', regexp)
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# Full version
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regexp = regexp.replace("${PV}", _v)
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# End
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regexp = regexp + r"/?$"
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return regexp
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def basedir_from_template(template):
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idx = template.find("${")
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if idx == -1:
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return template
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idx = template[0:idx].rfind("/")
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if idx == -1:
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return ""
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return template[0:idx]
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def generate_scan_paths(url):
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prefix, chunks = url.split("://")
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chunks = chunks.split("/")
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steps = []
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path = prefix + ":/"
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for chunk in chunks:
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if "${" in chunk:
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steps.append((path, "^(?:|.*/)" + regex_from_template(chunk)))
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path = ""
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else:
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path += "/"
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path += chunk
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return steps
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def parse_mirror(uri):
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from random import shuffle
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mirrors = portage.settings.thirdpartymirrors()
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if not uri.startswith("mirror://"):
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return uri
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eidx = uri.find("/", 9)
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if eidx == -1:
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euscan.output.einfo("Invalid mirror definition in SRC_URI:\n")
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euscan.output.einfo(" %s\n" % (uri))
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return None
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mirrorname = uri[9:eidx]
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path = uri[eidx + 1 :]
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if mirrorname in mirrors:
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mirrors = mirrors[mirrorname]
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shuffle(mirrors)
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uri = mirrors[0].strip("/") + "/" + path
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else:
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euscan.output.einfo("No known mirror by the name: %s" % (mirrorname))
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return None
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return uri
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def dict_to_xml(data, indent):
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doc = Document()
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root = doc.createElement("euscan")
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doc.appendChild(root)
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def _set_value(parent, value):
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if isinstance(value, dict):
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for k, v in list(value.items()):
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node = doc.createElement(k)
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_set_value(node, v)
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parent.appendChild(node)
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elif isinstance(value, list):
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for item in value:
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node = doc.createElement("value")
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text = doc.createTextNode(item)
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node.appendChild(text)
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parent.appendChild(node)
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else:
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text = doc.createTextNode(str(value))
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parent.appendChild(text)
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for key, value in list(data.items()):
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node = doc.createElement("package")
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node.setAttribute("name", key)
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_set_value(node, value)
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root.appendChild(node)
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return doc.toprettyxml(indent=" " * indent)
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