add hg and python

1 files changed, 315 insertions, 0 deletions

diff --git a/sys/src/cmd/hg/mercurial/hgweb/hgweb_mod.py b/sys/src/cmd/hg/mercurial/hgweb/hgweb_mod.py
new file mode 100644
index 000000000..31638106f
--- /dev/null
+++ b/sys/src/cmd/hg/mercurial/hgweb/hgweb_mod.py
@@ -0,0 +1,315 @@
+# hgweb/hgweb_mod.py - Web interface for a repository.
+#
+# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
+# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2, incorporated herein by reference.
+
+import os
+from mercurial import ui, hg, hook, error, encoding, templater
+from common import get_mtime, ErrorResponse
+from common import HTTP_OK, HTTP_BAD_REQUEST, HTTP_NOT_FOUND, HTTP_SERVER_ERROR
+from common import HTTP_UNAUTHORIZED, HTTP_METHOD_NOT_ALLOWED
+from request import wsgirequest
+import webcommands, protocol, webutil
+
+perms = {
+    'changegroup': 'pull',
+    'changegroupsubset': 'pull',
+    'unbundle': 'push',
+    'stream_out': 'pull',
+}
+
+class hgweb(object):
+    def __init__(self, repo, name=None):
+        if isinstance(repo, str):
+            u = ui.ui()
+            u.setconfig('ui', 'report_untrusted', 'off')
+            u.setconfig('ui', 'interactive', 'off')
+            self.repo = hg.repository(u, repo)
+        else:
+            self.repo = repo
+
+        hook.redirect(True)
+        self.mtime = -1
+        self.reponame = name
+        self.archives = 'zip', 'gz', 'bz2'
+        self.stripecount = 1
+        # a repo owner may set web.templates in .hg/hgrc to get any file
+        # readable by the user running the CGI script
+        self.templatepath = self.config('web', 'templates')
+
+    # The CGI scripts are often run by a user different from the repo owner.
+    # Trust the settings from the .hg/hgrc files by default.
+    def config(self, section, name, default=None, untrusted=True):
+        return self.repo.ui.config(section, name, default,
+                                   untrusted=untrusted)
+
+    def configbool(self, section, name, default=False, untrusted=True):
+        return self.repo.ui.configbool(section, name, default,
+                                       untrusted=untrusted)
+
+    def configlist(self, section, name, default=None, untrusted=True):
+        return self.repo.ui.configlist(section, name, default,
+                                       untrusted=untrusted)
+
+    def refresh(self):
+        mtime = get_mtime(self.repo.root)
+        if mtime != self.mtime:
+            self.mtime = mtime
+            self.repo = hg.repository(self.repo.ui, self.repo.root)
+            self.maxchanges = int(self.config("web", "maxchanges", 10))
+            self.stripecount = int(self.config("web", "stripes", 1))
+            self.maxshortchanges = int(self.config("web", "maxshortchanges", 60))
+            self.maxfiles = int(self.config("web", "maxfiles", 10))
+            self.allowpull = self.configbool("web", "allowpull", True)
+            encoding.encoding = self.config("web", "encoding",
+                                            encoding.encoding)
+
+    def run(self):
+        if not os.environ.get('GATEWAY_INTERFACE', '').startswith("CGI/1."):
+            raise RuntimeError("This function is only intended to be "
+                               "called while running as a CGI script.")
+        import mercurial.hgweb.wsgicgi as wsgicgi
+        wsgicgi.launch(self)
+
+    def __call__(self, env, respond):
+        req = wsgirequest(env, respond)
+        return self.run_wsgi(req)
+
+    def run_wsgi(self, req):
+
+        self.refresh()
+
+        # work with CGI variables to create coherent structure
+        # use SCRIPT_NAME, PATH_INFO and QUERY_STRING as well as our REPO_NAME
+
+        req.url = req.env['SCRIPT_NAME']
+        if not req.url.endswith('/'):
+            req.url += '/'
+        if 'REPO_NAME' in req.env:
+            req.url += req.env['REPO_NAME'] + '/'
+
+        if 'PATH_INFO' in req.env:
+            parts = req.env['PATH_INFO'].strip('/').split('/')
+            repo_parts = req.env.get('REPO_NAME', '').split('/')
+            if parts[:len(repo_parts)] == repo_parts:
+                parts = parts[len(repo_parts):]
+            query = '/'.join(parts)
+        else:
+            query = req.env['QUERY_STRING'].split('&', 1)[0]
+            query = query.split(';', 1)[0]
+
+        # process this if it's a protocol request
+        # protocol bits don't need to create any URLs
+        # and the clients always use the old URL structure
+
+        cmd = req.form.get('cmd', [''])[0]
+        if cmd and cmd in protocol.__all__:
+            if query:
+                raise ErrorResponse(HTTP_NOT_FOUND)
+            try:
+                if cmd in perms:
+                    try:
+                        self.check_perm(req, perms[cmd])
+                    except ErrorResponse, inst:
+                        if cmd == 'unbundle':
+                            req.drain()
+                        raise
+                method = getattr(protocol, cmd)
+                return method(self.repo, req)
+            except ErrorResponse, inst:
+                req.respond(inst, protocol.HGTYPE)
+                if not inst.message:
+                    return []
+                return '0\n%s\n' % inst.message,
+
+        # translate user-visible url structure to internal structure
+
+        args = query.split('/', 2)
+        if 'cmd' not in req.form and args and args[0]:
+
+            cmd = args.pop(0)
+            style = cmd.rfind('-')
+            if style != -1:
+                req.form['style'] = [cmd[:style]]
+                cmd = cmd[style+1:]
+
+            # avoid accepting e.g. style parameter as command
+            if hasattr(webcommands, cmd):
+                req.form['cmd'] = [cmd]
+            else:
+                cmd = ''
+
+            if cmd == 'static':
+                req.form['file'] = ['/'.join(args)]
+            else:
+                if args and args[0]:
+                    node = args.pop(0)
+                    req.form['node'] = [node]
+                if args:
+                    req.form['file'] = args
+
+            if cmd == 'archive':
+                fn = req.form['node'][0]
+                for type_, spec in self.archive_specs.iteritems():
+                    ext = spec[2]
+                    if fn.endswith(ext):
+                        req.form['node'] = [fn[:-len(ext)]]
+                        req.form['type'] = [type_]
+
+        # process the web interface request
+
+        try:
+            tmpl = self.templater(req)
+            ctype = tmpl('mimetype', encoding=encoding.encoding)
+            ctype = templater.stringify(ctype)
+
+            # check read permissions non-static content
+            if cmd != 'static':
+                self.check_perm(req, None)
+
+            if cmd == '':
+                req.form['cmd'] = [tmpl.cache['default']]
+                cmd = req.form['cmd'][0]
+
+            if cmd not in webcommands.__all__:
+                msg = 'no such method: %s' % cmd
+                raise ErrorResponse(HTTP_BAD_REQUEST, msg)
+            elif cmd == 'file' and 'raw' in req.form.get('style', []):
+                self.ctype = ctype
+                content = webcommands.rawfile(self, req, tmpl)
+            else:
+                content = getattr(webcommands, cmd)(self, req, tmpl)
+                req.respond(HTTP_OK, ctype)
+
+            return content
+
+        except error.LookupError, err:
+            req.respond(HTTP_NOT_FOUND, ctype)
+            msg = str(err)
+            if 'manifest' not in msg:
+                msg = 'revision not found: %s' % err.name
+            return tmpl('error', error=msg)
+        except (error.RepoError, error.RevlogError), inst:
+            req.respond(HTTP_SERVER_ERROR, ctype)
+            return tmpl('error', error=str(inst))
+        except ErrorResponse, inst:
+            req.respond(inst, ctype)
+            return tmpl('error', error=inst.message)
+
+    def templater(self, req):
+
+        # determine scheme, port and server name
+        # this is needed to create absolute urls
+
+        proto = req.env.get('wsgi.url_scheme')
+        if proto == 'https':
+            proto = 'https'
+            default_port = "443"
+        else:
+            proto = 'http'
+            default_port = "80"
+
+        port = req.env["SERVER_PORT"]
+        port = port != default_port and (":" + port) or ""
+        urlbase = '%s://%s%s' % (proto, req.env['SERVER_NAME'], port)
+        staticurl = self.config("web", "staticurl") or req.url + 'static/'
+        if not staticurl.endswith('/'):
+            staticurl += '/'
+
+        # some functions for the templater
+
+        def header(**map):
+            yield tmpl('header', encoding=encoding.encoding, **map)
+
+        def footer(**map):
+            yield tmpl("footer", **map)
+
+        def motd(**map):
+            yield self.config("web", "motd", "")
+
+        # figure out which style to use
+
+        vars = {}
+        style = self.config("web", "style", "paper")
+        if 'style' in req.form:
+            style = req.form['style'][0]
+            vars['style'] = style
+
+        start = req.url[-1] == '?' and '&' or '?'
+        sessionvars = webutil.sessionvars(vars, start)
+        mapfile = templater.stylemap(style, self.templatepath)
+
+        if not self.reponame:
+            self.reponame = (self.config("web", "name")
+                             or req.env.get('REPO_NAME')
+                             or req.url.strip('/') or self.repo.root)
+
+        # create the templater
+
+        tmpl = templater.templater(mapfile,
+                                   defaults={"url": req.url,
+                                             "staticurl": staticurl,
+                                             "urlbase": urlbase,
+                                             "repo": self.reponame,
+                                             "header": header,
+                                             "footer": footer,
+                                             "motd": motd,
+                                             "sessionvars": sessionvars
+                                            })
+        return tmpl
+
+    def archivelist(self, nodeid):
+        allowed = self.configlist("web", "allow_archive")
+        for i, spec in self.archive_specs.iteritems():
+            if i in allowed or self.configbool("web", "allow" + i):
+                yield {"type" : i, "extension" : spec[2], "node" : nodeid}
+
+    archive_specs = {
+        'bz2': ('application/x-tar', 'tbz2', '.tar.bz2', None),
+        'gz': ('application/x-tar', 'tgz', '.tar.gz', None),
+        'zip': ('application/zip', 'zip', '.zip', None),
+        }
+
+    def check_perm(self, req, op):
+        '''Check permission for operation based on request data (including
+        authentication info). Return if op allowed, else raise an ErrorResponse
+        exception.'''
+
+        user = req.env.get('REMOTE_USER')
+
+        deny_read = self.configlist('web', 'deny_read')
+        if deny_read and (not user or deny_read == ['*'] or user in deny_read):
+            raise ErrorResponse(HTTP_UNAUTHORIZED, 'read not authorized')
+
+        allow_read = self.configlist('web', 'allow_read')
+        result = (not allow_read) or (allow_read == ['*'])
+        if not (result or user in allow_read):
+            raise ErrorResponse(HTTP_UNAUTHORIZED, 'read not authorized')
+
+        if op == 'pull' and not self.allowpull:
+            raise ErrorResponse(HTTP_UNAUTHORIZED, 'pull not authorized')
+        elif op == 'pull' or op is None: # op is None for interface requests
+            return
+
+        # enforce that you can only push using POST requests
+        if req.env['REQUEST_METHOD'] != 'POST':
+            msg = 'push requires POST request'
+            raise ErrorResponse(HTTP_METHOD_NOT_ALLOWED, msg)
+
+        # require ssl by default for pushing, auth info cannot be sniffed
+        # and replayed
+        scheme = req.env.get('wsgi.url_scheme')
+        if self.configbool('web', 'push_ssl', True) and scheme != 'https':
+            raise ErrorResponse(HTTP_OK, 'ssl required')
+
+        deny = self.configlist('web', 'deny_push')
+        if deny and (not user or deny == ['*'] or user in deny):
+            raise ErrorResponse(HTTP_UNAUTHORIZED, 'push not authorized')
+
+        allow = self.configlist('web', 'allow_push')
+        result = allow and (allow == ['*'] or user in allow)
+        if not result:
+            raise ErrorResponse(HTTP_UNAUTHORIZED, 'push not authorized')