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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
MIGRATIONS = {
"gen-index": (
(
"""ALTER TABLE "config" ADD COLUMN "title" TEXT"""),
(),
"supports generating an index page"
),
"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>
""",
## 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': """""",
})
])
@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 "repos" ("url" TEXT PRIMARY KEY, "active" INT, "branch" TEXT, "project" TEXT)''')
c.execute('''CREATE UNIQUE INDEX "repos_url_branch_project" ON "repos" ("url", "branch", "project")''')
c.execute('''CREATE INDEX "repos_project" ON "repos" ("project")''')
c.execute('''CREATE INDEX "repos_active" ON "repos" ("active")''')
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")''')
c.execute('''CREATE TABLE "config" ("git_commit" TEXT, "base_url" TEXT, "title" TEXT)''')
c.execute('''INSERT INTO "config" VALUES ('', '', '')''')
conn.commit()
conn.close()
@ganarchy.command()
@click.argument('commit')
def set_commit(commit):
"""Sets the commit that represents the project."""
if not re.fullmatch("[a-fA-F0-9]{40}", commit):
raise click.BadArgumentUsage("COMMIT must be a git commit hash")
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
c.execute('''UPDATE "config" SET "git_commit"=?''', (commit,))
conn.commit()
conn.close()
@ganarchy.command()
@click.argument('base-url')
def set_base_url(base_url):
"""Sets the GAnarchy instance's base URL. Used for the URI handler."""
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
c.execute('''UPDATE "config" SET "base_url"=?''', (base_url,))
conn.commit()
conn.close()
@ganarchy.command()
@click.argument('title')
def set_title(title):
"""Sets the GAnarchy instance's title. This title is displayed on the index."""
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
c.execute('''UPDATE "config" SET "title"=?''', (title,))
conn.commit()
conn.close()
# TODO move --branch into here?
@ganarchy.group()
def repo():
"""Modifies repos to track."""
@repo.command()
@click.option('--branch', default=None, help="Sets the branch to be used for the repo")
@click.option('--project', default=None, help="Sets the project commit to be used for the repo")
@click.option('--disabled', default=False, is_flag=True, help="Mark the repo as disabled")
@click.argument('url')
def add(branch, project, disabled, url):
"""Adds a repo to track."""
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
c.execute('''SELECT "git_commit", "base_url" FROM "config"''')
(project_commit, base_url) = c.fetchone()
if project_commit == project:
project = None
c.execute('''INSERT INTO "repos" ("url", "active", "branch", "project") VALUES (?, ?, ?, ?)''', (url, int(not disabled), branch, project))
conn.commit()
conn.close()
@repo.command()
@click.option('--branch', default=None, help="Sets the branch to be used for the repo")
@click.option('--project', default=None, help="Sets the project commit to be used for the repo")
@click.argument('url')
def enable(branch, project, url):
"""Enables tracking of a repo."""
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
c.execute('''SELECT "git_commit", "base_url" FROM "config"''')
(project_commit, base_url) = c.fetchone()
if project_commit == project:
project = None
c.execute('''UPDATE "repos" SET "active"=1 WHERE "url"=? AND "branch" IS ? AND "project" IS ?''', (url, branch, project))
conn.commit()
conn.close()
@repo.command()
@click.option('--branch', default=None, help="Sets the branch to be used for the repo")
@click.option('--project', default=None, help="Sets the project commit to be used for the repo")
@click.argument('url')
def disable(branch, project, url):
"""Disables tracking of a repo."""
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
c.execute('''SELECT "git_commit", "base_url" FROM "config"''')
(project_commit, base_url) = c.fetchone()
if project_commit == project:
project = None
c.execute('''UPDATE repos SET "active"=0 WHERE "url"=? AND "branch" IS ? AND "project" IS ?''', (url, branch, project))
conn.commit()
conn.close()
@repo.command()
@click.option('--branch', default=None, help="Sets the branch to be used for the repo")
@click.option('--project', default=None, help="Sets the project commit to be used for the repo")
@click.argument('url')
def remove(branch, project, url):
"""Stops tracking a repo."""
click.confirm("WARNING: This operation does not delete the commits associated with the given repo! Are you sure you want to continue? This operation cannot be undone.")
conn = sqlite3.connect(data_home + "/ganarchy.db")
c = conn.cursor()
c.execute('''SELECT "git_commit", "base_url" FROM "config"''')
(project_commit, base_url) = c.fetchone()
if project_commit == project:
project = None
c.execute('''DELETE FROM "repos" WHERE "url"=? AND "branch" IS ? AND "project" IS ?''', (url, branch, project))
c.execute('''DELETE FROM "repo_history" WHERE "url"=? AND "branch" IS ? AND "project" IS ?''', (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, url, branch, head_commit, list_metadata=False):
self.url = url
self.branch = branch
self.project_commit = project.commit
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:
self.hash = GIT.get_hash(self.branchname)
except GitError:
self.hash = None
self.message = None
if list_metadata:
try:
self.update_metadata()
except GitError:
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)
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?
# Can you force-push an empty branch?
# TODO
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, post_hash, self.message
except (subprocess.CalledProcessError, GitError) as e:
click.echo(e, err=True)
return None
class Project:
def __init__(self, dbconn, ganarchy, project_commit, list_repos=False):
self.commit = project_commit
if ganarchy.project_commit == project_commit:
project_commit = None
self.refresh_metadata()
if list_repos:
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"''', (project_commit,)):
repos.append(Repo(dbconn, self, url, branch, head_commit))
self.repos = repos
else:
self.repos = None
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
self.refresh_metadata()
class GAnarchy:
def __init__(self, dbconn, list_projects=False):
with dbconn:
# TODO
#(project_commit, base_url, title) = dbconn.execute('''SELECT "git_commit", "base_url", "title" FROM "config"''').fetchone()
(project_commit, base_url) = dbconn.execute('''SELECT "git_commit", "base_url" FROM "config"''').fetchone()
title = None
self.project_commit = project_commit
self.base_url = base_url
if not base_url:
pass ## TODO
if not title:
from urllib.parse import urlparse
title = "GAnarchy on " + urlparse(base_url).hostname
self.title = title
if list_projects:
projects = []
with dbconn:
for (project,) in dbconn.execute('''SELECT DISTINCT "project" FROM "repos" '''): # FIXME? *maybe* sort by activity in the future
if project == None:
project = self.project_commit
projects.append(Project(dbconn, ganarchy, project))
projects.sort(key=lambda project: project.title)
self.projects = projects
else:
self.projects = None
@ganarchy.command()
@click.argument('project', required=False)
def cron_target(project):
"""Runs ganarchy as a cron target."""
# 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, list_projects=project=="index")
env = jinja2.Environment(loader=get_template_loader(), autoescape=False)
if project == "index":
# render the index
template = env.get_template('index.html')
click.echo(template.render(ganarchy = instance))
return
project_commit = instance.project_commit
base_url = instance.base_url
if not base_url or not (project or project_commit):
click.echo("No base URL or project commit specified", err=True)
return
if project_commit == project:
project = None
elif project is not None:
project_commit = project
entries = []
generate_html = []
c = conn.cursor()
p = Project(conn, instance, project_commit, list_repos=True)
# FIXME: this should be moved into Project.update()
for repo in p.repos:
result = repo.update()
if result is not None:
count, post_hash, msg = result
entries.append((repo.url, count, post_hash, repo.branch, project))
generate_html.append((repo.url, msg, count, repo.branch))
p.refresh_metadata()
# 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 = base_url,
# I don't think this thing supports deprecating the above?
project = p,
ganarchy = instance))
if __name__ == "__main__":
ganarchy()
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