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|
#!/usr/bin/env python3
# GAnarchy - project homepage generator
# Copyright (C) 2019 Soni L.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import sqlite3
import click
import os
import subprocess
import hashlib
import hmac
import jinja2
import re
import qtoml
from collections import defaultdict
from urllib.parse import urlparse
MIGRATIONS = {
"toml-config": (
(
'''UPDATE "repo_history" SET "project" = (SELECT "git_commit" FROM "config") WHERE "project" IS NULL''',
'''ALTER TABLE "repos" RENAME TO "repos_old"''',),
(
'''UPDATE "repo_history" SET "project" = NULL WHERE "project" = (SELECT "git_commit" FROM "config")''',
'''ALTER TABLE "repos_old" RENAME TO "repos"''',),
"switches to toml config format. the old 'repos' table is preserved as 'repos_old'"
),
"better-project-management": (
(
'''ALTER TABLE "repos" ADD COLUMN "branch" TEXT''',
'''ALTER TABLE "repos" ADD COLUMN "project" TEXT''',
'''CREATE UNIQUE INDEX "repos_url_branch_project" ON "repos" ("url", "branch", "project")''',
'''CREATE INDEX "repos_project" ON "repos" ("project")''',
'''ALTER TABLE "repo_history" ADD COLUMN "branch" TEXT''',
'''ALTER TABLE "repo_history" ADD COLUMN "project" TEXT''',
'''CREATE INDEX "repo_history_url_branch_project" ON "repo_history" ("url", "branch", "project")''',),
(
'''DELETE FROM "repos" WHERE "branch" IS NOT NULL OR "project" IS NOT NULL''',
'''DELETE FROM "repo_history" WHERE "branch" IS NOT NULL OR "project" IS NOT NULL''',),
"supports multiple projects, and allows choosing non-default branches"
),
"test": (
('''-- apply''',),
('''-- revert''',),
"does nothing"
)
}
data_home = os.environ.get('XDG_DATA_HOME', '')
if not data_home:
data_home = os.environ['HOME'] + '/.local/share'
data_home = data_home + "/ganarchy"
cache_home = os.environ.get('XDG_CACHE_HOME', '')
if not cache_home:
cache_home = os.environ['HOME'] + '/.cache'
cache_home = cache_home + "/ganarchy"
config_home = os.environ.get('XDG_CONFIG_HOME', '')
if not config_home:
config_home = os.environ['HOME'] + '/.config'
config_home = config_home + "/ganarchy"
config_dirs = os.environ.get('XDG_CONFIG_DIRS', '')
if not config_dirs:
config_dirs = '/etc/xdg'
# TODO check if this is correct
config_dirs = [config_dir + "/ganarchy" for config_dir in config_dirs.split(':')]
def get_template_loader():
from jinja2 import DictLoader, FileSystemLoader, ChoiceLoader
return ChoiceLoader([
FileSystemLoader([config_home + "/templates"] + [config_dir + "/templates" for config_dir in config_dirs]),
DictLoader({
## index.html
'index.html': """<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<!--
GAnarchy - project homepage generator
Copyright (C) 2019 Soni L.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
-->
<title>{{ ganarchy.title|e }}</title>
<meta name="description" content="{{ ganarchy.title|e }}" />
<!--if your browser doesn't like the following, use a different browser.-->
<script type="application/javascript" src="/index.js"></script>
</head>
<body>
<h1>{{ ganarchy.title|e }}</h1>
<p>This is {{ ganarchy.title|e }}. Currently tracking the following projects:</p>
<ul>
{% for project in ganarchy.projects -%}
<li><a href="/project/{{ project.commit|e }}">{{ project.title|e }}</a>: {{ project.description|e }}</li>
{% endfor -%}
</ul>
<p>Powered by <a href="https://ganarchy.autistic.space/">GAnarchy</a>. AGPLv3-licensed. <a href="https://cybre.tech/SoniEx2/ganarchy">Source Code</a>.</p>
<p>
<a href="{{ ganarchy.base_url|e }}" onclick="event.preventDefault(); navigator.registerProtocolHandler('web+ganarchy', this.href + '?url=%s', 'GAnarchy');">Register web+ganarchy: URI handler</a>.
</p>
</body>
</html>
""",
## index.toml
'index.toml': """# Generated by GAnarchy
{%- for project, repos in config.projects.items() %}
[projects.{{project}}]
{%- for repo_url, branches in repos.items() %}{% for branch, options in branches.items() %}{% if options.active %}
"{{repo_url|tomle}}".{% if branch %}"{{branch|tomle}}"{% else %}HEAD{% endif %} = { active=true }
{%- endif %}{% endfor %}
{%- endfor %}
{% endfor -%}
""",
## project.html FIXME
'project.html': """<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<!--
GAnarchy - project homepage generator
Copyright (C) 2019 Soni L.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
-->
<title>{{ project_title|e }}</title>
{% if project_desc %}<meta name="description" content="{{ project_desc|e }}" />{% endif %}
<style type="text/css">.branchname { color: #808080; font-style: italic; }</style>
</head>
<body>
<h1>{{ project_title|e }}</h1>
<p>Tracking <span id="project_commit"><a href="web+ganarchy:{{ project_commit }}">{{ project_commit }}</a></span></p>
<div id="project_body"><p>{{ project_body|e|replace("\n\n", "</p><p>") }}</p></div>
<ul>
{% for url, msg, img, branch in repos -%}
<li><a href="{{ url|e }}">{{ url|e }}</a>{% if branch %} <span class="branchname">[{{ branch|e }}]</span>{% endif %}: {{ msg|e }}</li>
{% endfor -%}
</ul>
<p>Powered by <a href="https://ganarchy.autistic.space/">GAnarchy</a>. AGPLv3-licensed. <a href="https://cybre.tech/SoniEx2/ganarchy">Source Code</a>.</p>
<p>
<a href="/">Main page</a>.
<a href="{{ base_url|e }}" onclick="event.preventDefault(); navigator.registerProtocolHandler('web+ganarchy', this.href + '?url=%s', 'GAnarchy');">Register web+ganarchy: URI handler</a>.
</p>
</body>
</html>
""",
## history.svg FIXME
'history.svg': """""",
})
])
tomletrans = str.maketrans({
0: '\\u0000', 1: '\\u0001', 2: '\\u0002', 3: '\\u0003', 4: '\\u0004',
5: '\\u0005', 6: '\\u0006', 7: '\\u0007', 8: '\\b', 9: '\\t', 10: '\\n',
11: '\\u000B', 12: '\\f', 13: '\\r', 14: '\\u000E', 15: '\\u000F',
16: '\\u0010', 17: '\\u0011', 18: '\\u0012', 19: '\\u0013', 20: '\\u0014',
21: '\\u0015', 22: '\\u0016', 23: '\\u0017', 24: '\\u0018', 25: '\\u0019',
26: '\\u001A', 27: '\\u001B', 28: '\\u001C', 29: '\\u001D', 30: '\\u001E',
31: '\\u001F', '"': '\\"', '\\': '\\\\'
})
def tomlescape(value):
return value.translate(tomletrans)
def get_env():
env = jinja2.Environment(loader=get_template_loader(), autoescape=False)
env.filters['tomlescape'] = tomlescape
env.filters['tomle'] = env.filters['tomlescape']
return env
@click.group()
def ganarchy():
pass
@ganarchy.command()
def initdb():
"""Initializes the ganarchy database."""
os.makedirs(data_home, exist_ok=True)
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
c.execute('''CREATE TABLE "repo_history" ("entry" INTEGER PRIMARY KEY ASC AUTOINCREMENT, "url" TEXT, "count" INTEGER, "head_commit" TEXT, "branch" TEXT, "project" TEXT)''')
c.execute('''CREATE INDEX "repo_history_url_branch_project" ON "repo_history" ("url", "branch", "project")''')
conn.commit()
conn.close()
def migrations():
@ganarchy.group()
def migrations():
"""Modifies the DB to work with a newer/older version.
WARNING: THIS COMMAND CAN BE EXTREMELY DESTRUCTIVE!"""
@migrations.command()
@click.argument('migration')
def apply(migration):
"""Applies the migration with the given name."""
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
click.echo(MIGRATIONS[migration][0])
for migration in MIGRATIONS[migration][0]:
c.execute(migration)
conn.commit()
conn.close()
@click.argument('migration')
@migrations.command()
def revert(migration):
"""Reverts the migration with the given name."""
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
click.echo(MIGRATIONS[migration][1])
for migration in MIGRATIONS[migration][1]:
c.execute(migration)
conn.commit()
conn.close()
@click.argument('migration', required=False)
@migrations.command()
def info(migration):
"""Shows information about the migration with the given name."""
if not migration:
# TODO could be improved
click.echo(MIGRATIONS.keys())
else:
click.echo(MIGRATIONS[migration][2])
migrations()
class GitError(LookupError):
"""Raised when a git operation fails, generally due to a missing commit or branch, or network connection issues."""
pass
class Git:
def __init__(self, path):
self.path = path
self.base = ("git", "-C", path)
def get_hash(self, target):
try:
return subprocess.check_output(self.base + ("show", target, "-s", "--format=format:%H", "--"), stderr=subprocess.DEVNULL).decode("utf-8")
except subprocess.CalledProcessError as e:
raise GitError from e
def get_commit_message(self, target):
try:
return subprocess.check_output(self.base + ("show", target, "-s", "--format=format:%B", "--"), stderr=subprocess.DEVNULL).decode("utf-8", "replace")
except subprocess.CalledProcessError as e:
raise GitError from e
# Currently we only use one git repo, at cache_home
GIT = Git(cache_home)
class Repo:
def __init__(self, dbconn, project_commit, url, branch, head_commit, list_metadata=False):
self.url = url
self.branch = branch
self.project_commit = project_commit
self.erroring = False
if not branch:
self.branchname = "gan" + hashlib.sha256(url.encode("utf-8")).hexdigest()
self.head = "HEAD"
else:
self.branchname = "gan" + hmac.new(branch.encode("utf-8"), url.encode("utf-8"), "sha256").hexdigest()
self.head = "refs/heads/" + branch
if head_commit:
self.hash = head_commit
else:
try: # FIXME should we even do this?
self.hash = GIT.get_hash(self.branchname)
except GitError:
self.erroring = True
self.hash = None
self.message = None
if list_metadata:
try:
self.update_metadata()
except GitError:
self.erroring = True
pass
def update_metadata(self):
self.message = GIT.get_commit_message(self.branchname)
def update(self):
"""
Updates the git repo, returning new metadata.
"""
try:
subprocess.check_output(["git", "-C", cache_home, "fetch", "-q", self.url, "+" + self.head + ":" + self.branchname], stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
# This may error for various reasons, but some are important: dead links, etc
click.echo(e.output, err=True)
self.erroring = True
return None
pre_hash = self.hash
try:
post_hash = GIT.get_hash(self.branchname)
except GitError as e:
# This should never happen, but maybe there's some edge cases?
# TODO check
self.erroring = True
return None
self.hash = post_hash
if not pre_hash:
pre_hash = post_hash
try:
count = int(subprocess.check_output(["git", "-C", cache_home, "rev-list", "--count", pre_hash + ".." + post_hash, "--"]).decode("utf-8").strip())
except subprocess.CalledProcessError:
count = 0 # force-pushed
try:
subprocess.check_call(["git", "-C", cache_home, "merge-base", "--is-ancestor", self.project_commit, self.branchname], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
self.update_metadata()
return count
except (subprocess.CalledProcessError, GitError) as e:
click.echo(e, err=True)
self.erroring = True
return None
class Project:
def __init__(self, dbconn, project_commit, list_repos=False):
self.commit = project_commit
self.refresh_metadata()
self.repos = None
if list_repos:
self.list_repos(dbconn)
def list_repos(self, dbconn):
repos = []
with dbconn:
for (e, url, branch, head_commit) in dbconn.execute('''SELECT "max"("e"), "url", "branch", "head_commit" FROM (SELECT "max"("T1"."entry") "e", "T1"."url", "T1"."branch", "T1"."head_commit" FROM "repo_history" "T1"
WHERE (SELECT "active" FROM "repos" "T2" WHERE "url" = "T1"."url" AND "branch" IS "T1"."branch" AND "project" IS ?1)
GROUP BY "T1"."url", "T1"."branch"
UNION
SELECT null, "T3"."url", "T3"."branch", null FROM "repos" "T3" WHERE "active" AND "project" IS ?1)
GROUP BY "url" ORDER BY "e"''', (self.commit,)):
repos.append(Repo(dbconn, self.commit, url, branch, head_commit))
self.repos = repos
def refresh_metadata(self):
try:
project = GIT.get_commit_message(self.commit)
project_title, project_desc = (lambda x: x.groups() if x is not None else ('', None))(re.fullmatch('^\\[Project\\]\s+(.+?)(?:\n\n(.+))?$', project, flags=re.ASCII|re.DOTALL|re.IGNORECASE))
if not project_title.strip(): # FIXME
project_title, project_desc = ("Error parsing project commit",)*2
# if project_desc: # FIXME
# project_desc = project_desc.strip()
self.commit_body = project
self.title = project_title
self.description = project_desc
except GitError:
self.commit_body = None
self.title = None
self.description = None
def update(self):
# TODO? check if working correctly
results = [(repo, repo.update()) for repo in self.repos]
self.refresh_metadata()
return results
class GAnarchy:
def __init__(self, dbconn, config, list_projects=False, list_repos=False):
base_url = config.base_url
title = config.title
if not base_url:
# FIXME use a more appropriate error type
raise ValueError
if not title:
title = "GAnarchy on " + urlparse(base_url).hostname
self.title = title
self.base_url = base_url
# load config onto DB
c = dbconn.cursor()
c.execute('''CREATE TEMPORARY TABLE "repos" ("url" TEXT PRIMARY KEY, "active" INT, "branch" TEXT, "project" TEXT)''')
c.execute('''CREATE UNIQUE INDEX "temp"."repos_url_branch_project" ON "repos" ("url", "branch", "project")''')
c.execute('''CREATE INDEX "temp"."repos_project" ON "repos" ("project")''')
c.execute('''CREATE INDEX "temp"."repos_active" ON "repos" ("active")''')
for (project_commit, repos) in config.projects.items():
for (repo_url, branches) in repos.items():
for (branchname, options) in branches.items():
if options['active']: # no need to insert inactive repos since they get ignored anyway
c.execute('''INSERT INTO "repos" VALUES (?, ?, ?, ?)''', (repo_url, 1, branchname, project_commit))
dbconn.commit()
if list_projects:
projects = []
with dbconn:
for (project,) in dbconn.execute('''SELECT DISTINCT "project" FROM "repos" '''): # FIXME? *maybe* sort by activity in the future
projects.append(Project(dbconn, project, list_repos=list_repos))
projects.sort(key=lambda project: project.title) # sort projects by title
self.projects = projects
else:
self.projects = None
class Config:
def __init__(self, toml_file, base=None, remove=True):
self.projects = defaultdict(lambda: defaultdict(lambda: defaultdict(lambda: defaultdict(dict))))
config_data = qtoml.load(toml_file)
self.title = config_data.get('title', '')
self.base_url = config_data.get('base_url', '')
# TODO blocked domains (but only read them from config_data if remove is True)
self.blocked_domains = []
self.blocked_domain_suffixes = []
self.blocked_domains.sort()
self.blocked_domain_suffixes.sort(key=lambda x: x[::-1])
# FIXME remove duplicates and process invalid entries
self.blocked_domains = tuple(self.blocked_domains)
self.blocked_domain_suffixes = tuple(self.blocked_domain_suffixes) # MUST be tuple
# TODO re.compile("(^" + "|^".join(map(re.escape, domains)) + "|" + "|".join(map(re.escape, suffixes) + ")$")
if base:
# FIXME is remove=remove the right thing to do?
self._update_projects(base.projects, remove=remove, sanitize=False) # already sanitized
projects = config_data.get('projects', {})
self._update_projects(projects, remove=remove)
def _update_projects(self, projects, remove, sanitize=True):
for (project_commit, repos) in projects.items():
if sanitize and not isinstance(repos, dict):
# TODO emit warnings?
continue
if sanitize and not re.fullmatch("[0-9a-fA-F]{40}|[0-9a-fA-F]{64}", project_commit): # future-proofing: sha256 support
# TODO emit warnings?
continue
project = self.projects[project_commit]
for (repo_url, branches) in repos.items():
if sanitize and not isinstance(branches, dict):
# TODO emit warnings?
continue
try:
u = urlparse(repo_url)
if not u:
raise ValueError
getattr(u, 'port') # raises ValueError if port is invalid
if u.scheme in ('file', ''):
raise ValueError
if (u.hostname in self.blocked_domains) or (u.hostname.endswith(self.blocked_domain_suffixes)):
raise ValueError
except ValueError:
if sanitize:
# TODO emit warnings?
continue
else:
raise
repo = project[repo_url]
for (branchname, options) in branches.items():
if sanitize and not isinstance(options, dict):
# TODO emit warnings?
continue
if branchname == "HEAD":
if sanitize:
# feels weird, but generally makes things easier
# DO NOT emit warnings here. this is deliberate.
branchname = None
else:
raise ValueError
branch = repo[branchname]
active = options.get('active', False)
if active not in (True, False):
if sanitize:
# TODO emit warnings?
continue
else:
raise ValueError
## | remove | branch.active | options.active | result |
## | x | false | false | false |
## | x | false | true | true |
## | x | true | true | true |
## | false | true | false | true |
## | true | true | false | false |
branch['active'] = branch.get('active', False) or active
if remove and not active:
branch['active'] = False
def debug():
@ganarchy.group()
def debug():
pass
@debug.command()
def paths():
click.echo('Config home: {}'.format(config_home))
click.echo('Additional config search path: {}'.format(config_dirs))
click.echo('Cache home: {}'.format(cache_home))
click.echo('Data home: {}'.format(data_home))
debug()
@ganarchy.command()
@click.option('--skip-errors/--no-skip-errors', default=False)
@click.argument('files', type=click.File('r', encoding='utf-8'), nargs=-1)
def merge_configs(skip_errors, files):
"""Merges config files."""
config = None
for f in files:
try:
f.reconfigure(newline='')
config = Config(f, config, remove=False)
except (UnicodeDecodeError, qtoml.decoder.TOMLDecodeError):
if not skip_errors:
raise
if config:
env = get_env()
template = env.get_template('index.toml')
click.echo(template.render(config=config))
@ganarchy.command()
@click.argument('project', required=False)
def cron_target(project):
"""Runs ganarchy as a cron target."""
conf = None
# reverse order is intentional
for d in reversed(config_dirs):
try:
conf = Config(open(d + "/config.toml", 'r', encoding='utf-8', newline=''), conf)
except (OSError, UnicodeDecodeError, qtoml.decoder.TOMLDecodeError):
pass
with open(config_home + "/config.toml", 'r', encoding='utf-8', newline='') as f:
conf = Config(f, conf)
env = get_env()
if project == "config":
# render the config
# doesn't have access to a GAnarchy object. this is deliberate.
template = env.get_template('index.toml')
click.echo(template.render(config = conf))
return
if project == "project-list":
# could be done with a template but eh w/e, this is probably better
for project in conf.projects.keys():
click.echo(project)
return
# make sure the cache dir exists
os.makedirs(cache_home, exist_ok=True)
# make sure it is a git repo
subprocess.call(["git", "-C", cache_home, "init", "-q"])
conn = sqlite3.connect(data_home + "/ganarchy.db")
instance = GAnarchy(conn, conf, list_projects=project in ["index", "config"])
if project == "index":
# render the index
template = env.get_template('index.html')
click.echo(template.render(ganarchy = instance))
return
if not instance.base_url or not project:
click.echo("No base URL or project commit specified", err=True)
return
entries = []
generate_html = []
c = conn.cursor()
p = Project(conn, project, list_repos=True)
results = p.update()
for (repo, count) in results:
if count is not None:
entries.append((repo.url, count, repo.hash, repo.branch, project))
generate_html.append((repo.url, repo.message, count, repo.branch))
# sort stuff twice because reasons
entries.sort(key=lambda x: x[1], reverse=True)
generate_html.sort(key=lambda x: x[2], reverse=True)
c.executemany('''INSERT INTO "repo_history" ("url", "count", "head_commit", "branch", "project") VALUES (?, ?, ?, ?, ?)''', entries)
conn.commit()
html_entries = []
for (url, msg, count, branch) in generate_html:
history = c.execute('''SELECT "count" FROM "repo_history" WHERE "url" = ? AND "branch" IS ? AND "project" IS ? ORDER BY "entry" ASC''', (url, branch, project)).fetchall()
# TODO process history into SVG
html_entries.append((url, msg, "", branch))
template = env.get_template('project.html')
click.echo(template.render(project_title = p.title,
project_desc = p.description,
project_body = p.commit_body,
project_commit = p.commit,
repos = html_entries,
base_url = instance.base_url,
# I don't think this thing supports deprecating the above?
project = p,
ganarchy = instance))
if __name__ == "__main__":
ganarchy()
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