view mercurial/hgweb/hgwebdir_mod.py @ 9469:7f0f882af23d

config: abort on indented non-continuation lines (issue1829)

Previously, as soon as a continuation would be met, "cont" would stay
forever set to True, but "item" was set back to "None".
This caused the continuation code bits to run every time, until the next
"self.get(section, item) + '\n'" which would crash.

# hgweb/hgwebdir_mod.py - Web interface for a directory of repositories.
#
# Copyright 21 May 2005 - (c) 2005 Jake Edge <[e-mail]>
# Copyright 2005, 2006 Matt Mackall <[e-mail]>
#
# 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, re, time
from mercurial.i18n import _
from mercurial import ui, hg, util, templater
from mercurial import error, encoding
from common import ErrorResponse, get_mtime, staticfile, paritygen,\
                   get_contact, HTTP_OK, HTTP_NOT_FOUND, HTTP_SERVER_ERROR
from hgweb_mod import hgweb
from request import wsgirequest
import webutil

def cleannames(items):
    return [(util.pconvert(name).strip('/'), path) for name, path in items]

def findrepos(paths):
    repos = {}
    for prefix, root in cleannames(paths):
        roothead, roottail = os.path.split(root)
        # "foo = /bar/*" makes every subrepo of /bar/ to be
        # mounted as foo/subrepo
        # and "foo = /bar/**" also recurses into the subdirectories,
        # remember to use it without working dir.
        try:
            recurse = {'*': False, '**': True}[roottail]
        except KeyError:
            repos[prefix] = root
            continue
        roothead = os.path.normpath(roothead)
        for path in util.walkrepos(roothead, followsym=True, recurse=recurse):
            path = os.path.normpath(path)
            name = util.pconvert(path[len(roothead):]).strip('/')
            if prefix:
                name = prefix + '/' + name
            repos[name] = path
    return repos.items()

class hgwebdir(object):
    refreshinterval = 20

    def __init__(self, conf, baseui=None):
        self.conf = conf
        self.baseui = baseui
        self.lastrefresh = 0
        self.refresh()

    def refresh(self):
        if self.lastrefresh + self.refreshinterval > time.time():
            return

        if self.baseui:
            self.ui = self.baseui.copy()
        else:
            self.ui = ui.ui()
            self.ui.setconfig('ui', 'report_untrusted', 'off')
            self.ui.setconfig('ui', 'interactive', 'off')

        if not isinstance(self.conf, (dict, list, tuple)):
            map = {'paths': 'hgweb-paths'}
            self.ui.readconfig(self.conf, remap=map, trust=True)
            paths = self.ui.configitems('hgweb-paths')
        elif isinstance(self.conf, (list, tuple)):
            paths = self.conf
        elif isinstance(self.conf, dict):
            paths = self.conf.items()

        encoding.encoding = self.ui.config('web', 'encoding',
                                           encoding.encoding)
        self.motd = self.ui.config('web', 'motd')
        self.style = self.ui.config('web', 'style', 'paper')
        self.stripecount = self.ui.config('web', 'stripes', 1)
        if self.stripecount:
            self.stripecount = int(self.stripecount)
        self._baseurl = self.ui.config('web', 'baseurl')

        self.repos = findrepos(paths)
        for prefix, root in self.ui.configitems('collections'):
            prefix = util.pconvert(prefix)
            for path in util.walkrepos(root, followsym=True):
                repo = os.path.normpath(path)
                name = util.pconvert(repo)
                if name.startswith(prefix):
                    name = name[len(prefix):]
                self.repos.append((name.lstrip('/'), repo))

        self.repos.sort()
        self.lastrefresh = time.time()

    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 read_allowed(self, ui, req):
        """Check allow_read and deny_read config options of a repo's ui object
        to determine user permissions.  By default, with neither option set (or
        both empty), allow all users to read the repo.  There are two ways a
        user can be denied read access:  (1) deny_read is not empty, and the
        user is unauthenticated or deny_read contains user (or *), and (2)
        allow_read is not empty and the user is not in allow_read.  Return True
        if user is allowed to read the repo, else return False."""

        user = req.env.get('REMOTE_USER')

        deny_read = ui.configlist('web', 'deny_read', untrusted=True)
        if deny_read and (not user or deny_read == ['*'] or user in deny_read):
            return False

        allow_read = ui.configlist('web', 'allow_read', untrusted=True)
        # by default, allow reading if no allow_read option has been set
        if (not allow_read) or (allow_read == ['*']) or (user in allow_read):
            return True

        return False

    def run_wsgi(self, req):
        try:
            try:
                self.refresh()

                virtual = req.env.get("PATH_INFO", "").strip('/')
                tmpl = self.templater(req)
                ctype = tmpl('mimetype', encoding=encoding.encoding)
                ctype = templater.stringify(ctype)

                # a static file
                if virtual.startswith('static/') or 'static' in req.form:
                    if virtual.startswith('static/'):
                        fname = virtual[7:]
                    else:
                        fname = req.form['static'][0]
                    static = templater.templatepath('static')
                    return (staticfile(static, fname, req),)

                # top-level index
                elif not virtual:
                    req.respond(HTTP_OK, ctype)
                    return self.makeindex(req, tmpl)

                # nested indexes and hgwebs

                repos = dict(self.repos)
                while virtual:
                    real = repos.get(virtual)
                    if real:
                        req.env['REPO_NAME'] = virtual
                        try:
                            repo = hg.repository(self.ui, real)
                            return hgweb(repo).run_wsgi(req)
                        except IOError, inst:
                            msg = inst.strerror
                            raise ErrorResponse(HTTP_SERVER_ERROR, msg)
                        except error.RepoError, inst:
                            raise ErrorResponse(HTTP_SERVER_ERROR, str(inst))

                    # browse subdirectories
                    subdir = virtual + '/'
                    if [r for r in repos if r.startswith(subdir)]:
                        req.respond(HTTP_OK, ctype)
                        return self.makeindex(req, tmpl, subdir)

                    up = virtual.rfind('/')
                    if up < 0:
                        break
                    virtual = virtual[:up]

                # prefixes not found
                req.respond(HTTP_NOT_FOUND, ctype)
                return tmpl("notfound", repo=virtual)

            except ErrorResponse, err:
                req.respond(err, ctype)
                return tmpl('error', error=err.message or '')
        finally:
            tmpl = None

    def makeindex(self, req, tmpl, subdir=""):

        def archivelist(ui, nodeid, url):
            allowed = ui.configlist("web", "allow_archive", untrusted=True)
            for i in [('zip', '.zip'), ('gz', '.tar.gz'), ('bz2', '.tar.bz2')]:
                if i[0] in allowed or ui.configbool("web", "allow" + i[0],
                                                    untrusted=True):
                    yield {"type" : i[0], "extension": i[1],
                           "node": nodeid, "url": url}

        sortdefault = 'name', False
        def entries(sortcolumn="", descending=False, subdir="", **map):
            rows = []
            parity = paritygen(self.stripecount)
            for name, path in self.repos:
                if not name.startswith(subdir):
                    continue
                name = name[len(subdir):]

                u = self.ui.copy()
                try:
                    u.readconfig(os.path.join(path, '.hg', 'hgrc'))
                except Exception, e:
                    u.warn(_('error reading %s/.hg/hgrc: %s\n') % (path, e))
                    continue
                def get(section, name, default=None):
                    return u.config(section, name, default, untrusted=True)

                if u.configbool("web", "hidden", untrusted=True):
                    continue

                if not self.read_allowed(u, req):
                    continue

                parts = [name]
                if 'PATH_INFO' in req.env:
                    parts.insert(0, req.env['PATH_INFO'].rstrip('/'))
                if req.env['SCRIPT_NAME']:
                    parts.insert(0, req.env['SCRIPT_NAME'])
                m = re.match('((?:https?://)?)(.*)', '/'.join(parts))
                # squish repeated slashes out of the path component
                url = m.group(1) + re.sub('/+', '/', m.group(2)) + '/'

                # update time with local timezone
                try:
                    d = (get_mtime(path), util.makedate()[1])
                except OSError:
                    continue

                contact = get_contact(get)
                description = get("web", "description", "")
                name = get("web", "name", name)
                row = dict(contact=contact or "unknown",
                           contact_sort=contact.upper() or "unknown",
                           name=name,
                           name_sort=name,
                           url=url,
                           description=description or "unknown",
                           description_sort=description.upper() or "unknown",
                           lastchange=d,
                           lastchange_sort=d[1]-d[0],
                           archives=archivelist(u, "tip", url))
                if (not sortcolumn or (sortcolumn, descending) == sortdefault):
                    # fast path for unsorted output
                    row['parity'] = parity.next()
                    yield row
                else:
                    rows.append((row["%s_sort" % sortcolumn], row))
            if rows:
                rows.sort()
                if descending:
                    rows.reverse()
                for key, row in rows:
                    row['parity'] = parity.next()
                    yield row

        self.refresh()
        sortable = ["name", "description", "contact", "lastchange"]
        sortcolumn, descending = sortdefault
        if 'sort' in req.form:
            sortcolumn = req.form['sort'][0]
            descending = sortcolumn.startswith('-')
            if descending:
                sortcolumn = sortcolumn[1:]
            if sortcolumn not in sortable:
                sortcolumn = ""

        sort = [("sort_%s" % column,
                 "%s%s" % ((not descending and column == sortcolumn)
                            and "-" or "", column))
                for column in sortable]

        self.refresh()
        if self._baseurl is not None:
            req.env['SCRIPT_NAME'] = self._baseurl

        return tmpl("index", entries=entries, subdir=subdir,
                    sortcolumn=sortcolumn, descending=descending,
                    **dict(sort))

    def templater(self, req):

        def header(**map):
            yield tmpl('header', encoding=encoding.encoding, **map)

        def footer(**map):
            yield tmpl("footer", **map)

        def motd(**map):
            if self.motd is not None:
                yield self.motd
            else:
                yield config('web', 'motd', '')

        def config(section, name, default=None, untrusted=True):
            return self.ui.config(section, name, default, untrusted)

        if self._baseurl is not None:
            req.env['SCRIPT_NAME'] = self._baseurl

        url = req.env.get('SCRIPT_NAME', '')
        if not url.endswith('/'):
            url += '/'

        vars = {}
        style = self.style
        if 'style' in req.form:
            vars['style'] = style = req.form['style'][0]
        start = url[-1] == '?' and '&' or '?'
        sessionvars = webutil.sessionvars(vars, start)

        staticurl = config('web', 'staticurl') or url + 'static/'
        if not staticurl.endswith('/'):
            staticurl += '/'

        style = 'style' in req.form and req.form['style'][0] or self.style
        mapfile = templater.stylemap(style)
        tmpl = templater.templater(mapfile,
                                   defaults={"header": header,
                                             "footer": footer,
                                             "motd": motd,
                                             "url": url,
                                             "staticurl": staticurl,
                                             "sessionvars": sessionvars})
        return tmpl