###################################################################################

###################################################################################

## Kallithea config file generated with kallithea-cli                            ##

##                                                                               ##

## The %(here)s variable will generally be replaced with the parent directory of ##

## this file. Other use of % must be escaped as %% .                             ##

###################################################################################

###################################################################################

[DEFAULT]

################################################################################

## Email settings                                                             ##

##                                                                            ##

## Refer to the documentation ("Email settings") for more details.            ##

##                                                                            ##

## It is recommended to use a valid sender address that passes access         ##

## validation and spam filtering in mail servers.                             ##

################################################################################

## 'From' header for application emails. You can optionally add a name.

## Default:

#app_email_from = Kallithea

## Examples:

#app_email_from = Kallithea <kallithea-noreply@example.com>

#app_email_from = kallithea-noreply@example.com

## Subject prefix for application emails.

## A space between this prefix and the real subject is automatically added.

## Default:

#email_prefix =

## Example:

#email_prefix = [Kallithea]

## Recipients for error emails and fallback recipients of application mails.

## Multiple addresses can be specified, comma-separated.

## Only addresses are allowed, do not add any name part.

## Default:

#email_to =

## Examples:

#email_to = admin@example.com

#email_to = admin@example.com,another_admin@example.com

email_to =

## 'From' header for error emails. You can optionally add a name.

## Default: (none)

## Examples:

#error_email_from = Kallithea Errors <kallithea-noreply@example.com>

#error_email_from = kallithea_errors@example.com

error_email_from =

## SMTP server settings

## If specifying credentials, make sure to use secure connections.

## Default: Send unencrypted unauthenticated mails to the specified smtp_server.

## For "SSL", use smtp_use_ssl = true and smtp_port = 465.

## For "STARTTLS", use smtp_use_tls = true and smtp_port = 587.

smtp_server =

smtp_username =

smtp_password =

smtp_port =

smtp_use_ssl = false

smtp_use_tls = false

## Entry point for 'gearbox serve'

[server:main]

#host = 127.0.0.1

host = 0.0.0.0

port = 5000

## Gearbox serve uses the Waitress web server ##

use = egg:waitress#main

## avoid multi threading

threads = 1

## allow push of repos bigger than the default of 1 GB

max_request_body_size = 107374182400

## use poll instead of select, fixes fd limits, may not work on old

## windows systems.

#asyncore_use_poll = True

## middleware for hosting the WSGI application under a URL prefix

#[filter:proxy-prefix]

#use = egg:PasteDeploy#prefix

#prefix = /<your-prefix>

[app:main]

use = egg:kallithea

## enable proxy prefix middleware

#filter-with = proxy-prefix

full_stack = true

static_files = true

## Internationalization (see setup documentation for details)

## By default, the languages requested by the browser are used if available, with English as default.

## Set i18n.enabled=false to disable automatic language choice.

#i18n.enabled = true

## To Force a language, set i18n.enabled=false and specify the language in i18n.lang.

## Valid values are the names of subdirectories in kallithea/i18n with a LC_MESSAGES/kallithea.mo

#i18n.lang = en

cache_dir = %(here)s/data

index_dir = %(here)s/data/index

## uncomment and set this path to use archive download cache

archive_cache_dir = %(here)s/data/tarballcache

## change this to unique ID for security

#app_instance_uuid = VERY-SECRET

app_instance_uuid = development-not-secret

## cut off limit for large diffs (size in bytes)

cut_off_limit = 256000

## always pretend the client connected using HTTPS (default false)

#force_https = true

## use Strict-Transport-Security headers (default false)

#use_htsts = true

## number of commits stats will parse on each iteration

commit_parse_limit = 25

## Path to Python executable to be used for git hooks.

## This value will be written inside the git hook scripts as the text

## after '#!' (shebang). When empty or not defined, the value of

## 'sys.executable' at the time of installation of the git hooks is

## used, which is correct in many cases but for example not when using uwsgi.

## If you change this setting, you should reinstall the Git hooks via

## Admin > Settings > Remap and Rescan.

#git_hook_interpreter = /srv/kallithea/venv/bin/python3

## path to git executable

git_path = git

## git rev filter option, --all is the default filter, if you need to

## hide all refs in changelog switch this to --branches --tags

#git_rev_filter = --branches --tags

## RSS feed options

rss_cut_off_limit = 256000

rss_items_per_page = 10

rss_include_diff = false

## options for showing and identifying changesets

show_sha_length = 12

show_revision_number = false

## Canonical URL to use when creating full URLs in UI and texts.

## Useful when the site is available under different names or protocols.

## Defaults to what is provided in the WSGI environment.

#canonical_url = https://kallithea.example.com/repos

## gist URL alias, used to create nicer urls for gist. This should be an

## url that does rewrites to _admin/gists/<gistid>.

## example: http://gist.example.com/{gistid}. Empty means use the internal

## Kallithea url, ie. http[s]://kallithea.example.com/_admin/gists/<gistid>

gist_alias_url =

## default encoding used to convert from and to unicode

## can be also a comma separated list of encoding in case of mixed encodings

default_encoding = utf-8

## Set Mercurial encoding, similar to setting HGENCODING before launching Kallithea

hgencoding = utf-8

## issue tracker for Kallithea (leave blank to disable, absent for default)

#bugtracker = https://bitbucket.org/conservancy/kallithea/issues

## issue tracking mapping for commit messages, comments, PR descriptions, ...

## Refer to the documentation ("Integration with issue trackers") for more details.

## regular expression to match issue references

## This pattern may/should contain parenthesized groups, that can

## be referred to in issue_server_link or issue_sub using Python backreferences

## (e.g. \1, \2, ...). You can also create named groups with '(?P<groupname>)'.

## To require mandatory whitespace before the issue pattern, use:

## (?:^|(?<=\s)) before the actual pattern, and for mandatory whitespace

## behind the issue pattern, use (?:$|(?=\s)) after the actual pattern.

issue_pat = #(\d+)

## server url to the issue

## This pattern may/should contain backreferences to parenthesized groups in issue_pat.

## A backreference can be \1, \2, ... or \g<groupname> if you specified a named group

## called 'groupname' in issue_pat.

## The special token {repo} is replaced with the full repository name

## including repository groups, while {repo_name} is replaced with just

## the name of the repository.

issue_server_link = https://issues.example.com/{repo}/issue/\1

## substitution pattern to use as the link text

## If issue_sub is empty, the text matched by issue_pat is retained verbatim

## for the link text. Otherwise, the link text is that of issue_sub, with any

## backreferences to groups in issue_pat replaced.

issue_sub =

## issue_pat, issue_server_link and issue_sub can have suffixes to specify

## multiple patterns, to other issues server, wiki or others

## below an example how to create a wiki pattern

## wiki-some-id -> https://wiki.example.com/some-id

#issue_pat_wiki = wiki-(\S+)

#issue_server_link_wiki = https://wiki.example.com/\1

#issue_sub_wiki = WIKI-\1

## alternative return HTTP header for failed authentication. Default HTTP

## response is 401 HTTPUnauthorized. Currently Mercurial clients have trouble with

## handling that. Set this variable to 403 to return HTTPForbidden

auth_ret_code =

## allows to change the repository location in settings page

allow_repo_location_change = True

## allows to setup custom hooks in settings page

allow_custom_hooks_settings = True

## extra extensions for indexing, space separated and without the leading '.'.

#index.extensions =

#    gemfile

#    lock

## extra filenames for indexing, space separated

#index.filenames =

#    .dockerignore

#    .editorconfig

#    INSTALL

#    CHANGELOG

####################################

##            SSH CONFIG          ##

####################################

## SSH is disabled by default, until an Administrator decides to enable it.

ssh_enabled = false

## File where users' SSH keys will be stored *if* ssh_enabled is true.

#ssh_authorized_keys = /home/kallithea/.ssh/authorized_keys

## Path to be used in ssh_authorized_keys file to invoke kallithea-cli with ssh-serve.

#kallithea_cli_path = /srv/kallithea/venv/bin/kallithea-cli

## Locale to be used in the ssh-serve command.

## This is needed because an SSH client may try to use its own locale

## settings, which may not be available on the server.

## See `locale -a` for valid values on this system.

#ssh_locale = C.UTF-8

####################################

##         CELERY CONFIG          ##

####################################

## Note: Celery doesn't support Windows.

use_celery = false

## Celery config settings from https://docs.celeryproject.org/en/4.4.0/userguide/configuration.html prefixed with 'celery.'.

## Example: use the message queue on the local virtual host 'kallitheavhost' as the RabbitMQ user 'kallithea':

celery.broker_url = amqp://kallithea:thepassword@localhost:5672/kallitheavhost

celery.worker_concurrency = 2

celery.worker_max_tasks_per_child = 100

####################################

##          BEAKER CACHE          ##

####################################

beaker.cache.data_dir = %(here)s/data/cache/data

beaker.cache.lock_dir = %(here)s/data/cache/lock

beaker.cache.regions = long_term,long_term_file

beaker.cache.long_term.type = memory

beaker.cache.long_term.expire = 36000

beaker.cache.long_term.key_length = 256

beaker.cache.long_term_file.type = file

beaker.cache.long_term_file.expire = 604800

beaker.cache.long_term_file.key_length = 256

####################################

##        BEAKER SESSION          ##

####################################

## Name of session cookie. Should be unique for a given host and path, even when running

## on different ports. Otherwise, cookie sessions will be shared and messed up.

session.key = kallithea

## Sessions should always only be accessible by the browser, not directly by JavaScript.

session.httponly = true

## Session lifetime. 2592000 seconds is 30 days.

session.timeout = 2592000

## Server secret used with HMAC to ensure integrity of cookies.

#session.secret = VERY-SECRET

session.secret = development-not-secret

## Further, encrypt the data with AES.

#session.encrypt_key = <key_for_encryption>

#session.validate_key = <validation_key>

## Type of storage used for the session, current types are

## dbm, file, memcached, database, and memory.

## File system storage of session data. (default)

#session.type = file

    kallithea-cli index-create -c my.ini --full

The ``--repo-location`` option allows the location of the repositories to be overridden;

usually, the location is retrieved from the Kallithea database.

The ``--index-only`` option can be used to limit the indexed repositories to a comma-separated list::

    kallithea-cli index-create -c my.ini --index-only=vcs,kallithea

To keep your index up-to-date it is necessary to do periodic index builds;

for this, it is recommended to use a crontab entry. Example::

    0  3  *  *  *  /path/to/virtualenv/bin/kallithea-cli index-create -c /path/to/kallithea/my.ini

When using incremental mode (the default), Whoosh will check the last

modification date of each file and add it to be reindexed if a newer file is

available. The indexing daemon checks for any removed files and removes them

from index.

If you want to rebuild the index from scratch, you can use the ``-f`` flag as above,

or in the admin panel you can check the "build from scratch" checkbox.

Integration with issue trackers

-------------------------------

Kallithea provides a simple integration with issue trackers. It's possible

to define a regular expression that will match an issue ID in commit messages,

and have that replaced with a URL to the issue.

This is achieved with following three variables in the ini file::

    issue_pat = #(\d+)

    issue_server_link = https://issues.example.com/{repo}/issue/\1

    issue_sub =

``issue_pat`` is the regular expression describing which strings in

commit messages will be treated as issue references. The expression can/should

have one or more parenthesized groups that can later be referred to in

``issue_server_link`` and ``issue_sub`` (see below). If you prefer, named groups

can be used instead of simple parenthesized groups.

If the pattern should only match if it is preceded by whitespace, add the

following string before the actual pattern: ``(?:^|(?<=\s))``.

If the pattern should only match if it is followed by whitespace, add the

following string after the actual pattern: ``(?:$|(?=\s))``.

These expressions use lookbehind and lookahead assertions of the Python regular

expression module to avoid the whitespace to be part of the actual pattern,

otherwise the link text will also contain that whitespace.

Matched issue references are replaced with the link specified in

``issue_server_link``, in which any backreferences are resolved. Backreferences

can be ``\1``, ``\2``, ... or for named groups ``\g<groupname>``.

The special token ``{repo}`` is replaced with the full repository path

(including repository groups), while token ``{repo_name}`` is replaced with the

repository name (without repository groups).

The link text is determined by ``issue_sub``, which can be a string containing

backreferences to the groups specified in ``issue_pat``. If ``issue_sub`` is

empty, then the text matched by ``issue_pat`` is used verbatim.

The example settings shown above match issues in the format ``#<number>``.

This will cause the text ``#300`` to be transformed into a link:

.. code-block:: html

  <a href="https://issues.example.com/example_repo/issue/300">#300</a>

The following example transforms a text starting with either of 'pullrequest',

'pull request' or 'PR', followed by an optional space, then a pound character

(#) and one or more digits, into a link with the text 'PR #' followed by the

digits::

    issue_pat = (pullrequest|pull request|PR) ?#(\d+)

    issue_server_link = https://issues.example.com/\2

    issue_sub = PR #\2

The following example demonstrates how to require whitespace before the issue

reference in order for it to be recognized, such that the text ``issue#123`` will

not cause a match, but ``issue #123`` will::

    issue_pat = (?:^|(?<=\s))#(\d+)

    issue_server_link = https://issues.example.com/\1

    issue_sub =

If needed, more than one pattern can be specified by appending a unique suffix to

the variables. For example, also demonstrating the use of named groups::

    issue_pat_wiki = wiki-(?P<pagename>\S+)

    issue_server_link_wiki = https://wiki.example.com/\g<pagename>

    issue_sub_wiki = WIKI-\g<pagename>

With these settings, wiki pages can be referenced as wiki-some-id, and every

such reference will be transformed into:

.. code-block:: html

  <a href="https://wiki.example.com/some-id">WIKI-some-id</a>

Refer to the `Python regular expression documentation`_ for more details about

the supported syntax in ``issue_pat``, ``issue_server_link`` and ``issue_sub``.

Hook management

---------------

Custom Mercurial hooks can be managed in a similar way to that used in ``.hgrc`` files.

To manage hooks, choose *Admin > Settings > Hooks*.

To add another custom hook simply fill in the first textbox with

``<name>.<hook_type>`` and the second with the hook path. Example hooks

can be found in ``kallithea.lib.hooks``.

Kallithea will also use some hooks internally. They cannot be modified, but

some of them can be enabled or disabled in the *VCS* section.

Kallithea does not actively support custom Git hooks, but hooks can be installed

manually in the file system. Kallithea will install and use the

``post-receive`` Git hook internally, but it will then invoke

``post-receive-custom`` if present.

Changing default encoding

-------------------------

By default, Kallithea uses UTF-8 encoding.

This is configurable as ``default_encoding`` in the .ini file.

This affects many parts in Kallithea including user names, filenames, and

encoding of commit messages. In addition Kallithea can detect if the ``chardet``

library is installed. If ``chardet`` is detected Kallithea will fallback to it

when there are encode/decode errors.

The Mercurial encoding is configurable as ``hgencoding``. It is similar to

setting the ``HGENCODING`` environment variable, but will override it.

Celery configuration

--------------------

Kallithea can use the distributed task queue system Celery_ to run tasks like

cloning repositories or sending emails.

Kallithea will in most setups work perfectly fine out of the box (without

Celery), executing all tasks in the web server process. Some tasks can however

take some time to run and it can be better to run such tasks asynchronously in

a separate process so the web server can focus on serving web requests.

For installation and configuration of Celery, see the `Celery documentation`_.

Note that Celery requires a message broker service like RabbitMQ_ (recommended)

or Redis_.

The use of Celery is configured in the Kallithea ini configuration file.

To enable it, simply set::

  use_celery = true

and add or change the ``celery.*`` configuration variables.

Configuration settings are prefixed with 'celery.', so for example setting

`broker_url` in Celery means setting `celery.broker_url` in the configuration

file.

To start the Celery process, run::

  kallithea-cli celery-run -c my.ini

Extra options to the Celery worker can be passed after ``--`` - see ``-- -h``

for more info.

.. note::

   Make sure you run this command from the same virtualenv, and with the same

   user that Kallithea runs.

Proxy setups

------------

When Kallithea is processing HTTP requests from a user, it will see and use

some of the basic properties of the connection, both at the TCP/IP level and at

the HTTP level. The WSGI server will provide this information to Kallithea in

the "environment".

In some setups, a proxy server will take requests from users and forward

them to the actual Kallithea server. The proxy server will thus be the

immediate client of the Kallithea WSGI server, and Kallithea will basically see

it as such. To make sure Kallithea sees the request as it arrived from the

client to the proxy server, the proxy server must be configured to

somehow pass the original information on to Kallithea, and Kallithea must be

configured to pick that information up and trust it.

Kallithea will by default rely on its WSGI server to provide the IP of the

Kallithea will by default rely on finding the protocol (``http`` or ``https``)

in the WSGI environment as ``wsgi.url_scheme``. If the proxy server puts

the protocol of the client request in the ``X-Url-Scheme``,

``X-Forwarded-Scheme``, or ``X-Forwarded-Proto`` HTTP header,

Kallithea can be configured to trust these headers by setting::

    https_fixup = true

HTTPS support

-------------

Kallithea will by default generate URLs based on the WSGI environment.

Alternatively, you can use some special configuration settings to control

directly which scheme/protocol Kallithea will use when generating URLs:

- With ``https_fixup = true``, the scheme will be taken from the

  ``X-Url-Scheme``, ``X-Forwarded-Scheme`` or ``X-Forwarded-Proto`` HTTP header

  (default ``http``).

- With ``force_https = true``, the scheme will be seen as ``https``.

- With ``use_htsts = true``, Kallithea will set ``Strict-Transport-Security`` when using https.

.. _nginx_virtual_host:

Nginx virtual host example

--------------------------

Sample config for Nginx using proxy:

.. code-block:: nginx

    upstream kallithea {

        server 127.0.0.1:5000;

        # add more instances for load balancing

        #server 127.0.0.1:5001;

        #server 127.0.0.1:5002;

    }

    ## gist alias

    server {

       listen          443;

       server_name     gist.example.com;

       access_log      /var/log/nginx/gist.access.log;

       error_log       /var/log/nginx/gist.error.log;

       ssl on;

       ssl_certificate     gist.your.kallithea.server.crt;

       ssl_certificate_key gist.your.kallithea.server.key;

       ssl_session_timeout 5m;

       ssl_protocols SSLv3 TLSv1;

       ssl_ciphers DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:EDH-RSA-DES-CBC3-SHA:AES256-SHA:DES-CBC3-SHA:AES128-SHA:RC4-SHA:RC4-MD5;

       ssl_prefer_server_ciphers on;

       rewrite ^/(.+)$ https://kallithea.example.com/_admin/gists/$1;

       rewrite (.*)    https://kallithea.example.com/_admin/gists;

    }

    server {

       listen          443;

       server_name     kallithea.example.com

       access_log      /var/log/nginx/kallithea.access.log;

       error_log       /var/log/nginx/kallithea.error.log;

       ssl on;

       ssl_certificate     your.kallithea.server.crt;

       ssl_certificate_key your.kallithea.server.key;

       ssl_session_timeout 5m;

       ssl_protocols SSLv3 TLSv1;

       ssl_ciphers DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:EDH-RSA-DES-CBC3-SHA:AES256-SHA:DES-CBC3-SHA:AES128-SHA:RC4-SHA:RC4-MD5;

       ssl_prefer_server_ciphers on;

       ## uncomment root directive if you want to serve static files by nginx

       ## requires static_files = false in .ini file

       #root /srv/kallithea/kallithea/kallithea/public;

       include         /etc/nginx/proxy.conf;

       location / {

            try_files $uri @kallithea;

       }

       location @kallithea {

            proxy_pass      http://127.0.0.1:5000;

       }

    }

Here's the proxy.conf. It's tuned so it will not timeout on long

pushes or large pushes::

    proxy_redirect              off;

    proxy_set_header            Host $host;

    ## needed for container auth

    #proxy_set_header            REMOTE_USER $remote_user;

    #proxy_set_header            X-Forwarded-User $remote_user;

    proxy_set_header            X-Url-Scheme $scheme;

    proxy_set_header            X-Host $http_host;

    proxy_set_header            X-Real-IP $remote_addr;

    proxy_set_header            X-Forwarded-For $proxy_add_x_forwarded_for;

    proxy_set_header            Proxy-host $proxy_host;

    proxy_buffering             off;

    proxy_connect_timeout       7200;

    proxy_send_timeout          7200;

    proxy_read_timeout          7200;

    proxy_buffers               8 32k;

    client_max_body_size        1024m;

    client_body_buffer_size     128k;

    large_client_header_buffers 8 64k;

.. _apache_virtual_host_reverse_proxy:

Apache virtual host reverse proxy example

-----------------------------------------

Here is a sample configuration file for Apache using proxy:

.. code-block:: apache

    <VirtualHost *:80>

            ServerName kallithea.example.com

            <Proxy *>

              # For Apache 2.4 and later:

              Require all granted

              # For Apache 2.2 and earlier, instead use:

              # Order allow,deny

              # Allow from all

            </Proxy>

            #important !

            #Directive to properly generate url (clone url) for Kallithea

            ProxyPreserveHost On

            #kallithea instance

            ProxyPass / http://127.0.0.1:5000/

            ProxyPassReverse / http://127.0.0.1:5000/

            #to enable https use line below

            #SetEnvIf X-Url-Scheme https HTTPS=1

    </VirtualHost>

Additional tutorial

http://pylonsbook.com/en/1.1/deployment.html#using-apache-to-proxy-requests-to-pylons

.. _apache_subdirectory:

Apache as subdirectory

----------------------

Apache subdirectory part:

.. code-block:: apache

    <Location /PREFIX >

      ProxyPass http://127.0.0.1:5000/PREFIX

      ProxyPassReverse http://127.0.0.1:5000/PREFIX

      SetEnvIf X-Url-Scheme https HTTPS=1

    </Location>

Besides the regular apache setup you will need to add the following line

into ``[app:main]`` section of your .ini file::

    filter-with = proxy-prefix

Add the following at the end of the .ini file::

    [filter:proxy-prefix]

    use = egg:PasteDeploy#prefix

    prefix = /PREFIX

then change ``PREFIX`` into your chosen prefix

.. _apache_mod_wsgi:

Apache with mod_wsgi

--------------------

Alternatively, Kallithea can be set up with Apache under mod_wsgi. For

that, you'll need to:

- Install mod_wsgi. If using a Debian-based distro, you can install

  the package libapache2-mod-wsgi::

# -*- coding: utf-8 -*-

# 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 <http://www.gnu.org/licenses/>.

"""

kallithea.controllers.base

~~~~~~~~~~~~~~~~~~~~~~~~~~

The base Controller API

Provides the BaseController class for subclassing. And usage in different

controllers

This file was forked by the Kallithea project in July 2014.

Original author and date, and relevant copyright and licensing information is below:

:created_on: Oct 06, 2010

:author: marcink

:copyright: (c) 2013 RhodeCode GmbH, and others.

:license: GPLv3, see LICENSE.md for more details.

"""

import base64

import datetime

import logging

import traceback

import warnings

import decorator

import paste.auth.basic

import paste.httpexceptions

import paste.httpheaders

import webob.exc

from tg import TGController, config, render_template, request, response, session

from tg import tmpl_context as c

from tg.i18n import ugettext as _

import kallithea

from kallithea.lib import auth_modules, ext_json, webutils

from kallithea.lib.auth import AuthUser, HasPermissionAnyMiddleware

from kallithea.lib.exceptions import UserCreationError

from kallithea.lib.utils import get_repo_slug, is_valid_repo

from kallithea.lib.utils2 import AttributeDict, asbool, ascii_bytes, safe_int, safe_str, set_hook_environment

from kallithea.lib.vcs.exceptions import ChangesetDoesNotExistError, EmptyRepositoryError, RepositoryError

from kallithea.lib.webutils import url

from kallithea.model import db, meta

from kallithea.model.scm import ScmModel

log = logging.getLogger(__name__)

def render(template_path):

    return render_template({'url': url}, 'mako', template_path)

def _filter_proxy(ip):

    """

    HTTP_X_FORWARDED_FOR headers can have multiple IP addresses, with the

    leftmost being the original client. Each proxy that is forwarding the

    request will usually add the IP address it sees the request coming from.

    The client might have provided a fake leftmost value before hitting the

    first proxy, so if we have a proxy that is adding one IP address, we can

    only trust the rightmost address.

    """

    if ',' in ip:

        _ips = ip.split(',')

        _first_ip = _ips[-1].strip()

        log.debug('Got multiple IPs %s, using %s', ','.join(_ips), _first_ip)

        return _first_ip

    return ip

def get_ip_addr(environ):

def get_path_info(environ):

    """Return PATH_INFO from environ ... using tg.original_request if available.

    In Python 3 WSGI, PATH_INFO is a unicode str, but kind of contains encoded

    bytes. The code points are guaranteed to only use the lower 8 bit bits, and

    encoding the string with the 1:1 encoding latin1 will give the

    corresponding byte string ... which then can be decoded to proper unicode.

    """

    org_req = environ.get('tg.original_request')

    if org_req is not None:

        environ = org_req.environ

    return safe_str(environ['PATH_INFO'].encode('latin1'))

def log_in_user(user, remember, is_external_auth, ip_addr):

    """

    Log a `User` in and update session and cookies. If `remember` is True,

    the session cookie is set to expire in a year; otherwise, it expires at

    the end of the browser session.

    Returns populated `AuthUser` object.

    """

    # It should not be possible to explicitly log in as the default user.

    assert not user.is_default_user, user

    auth_user = AuthUser.make(dbuser=user, is_external_auth=is_external_auth, ip_addr=ip_addr)

    if auth_user is None:

        return None

    user.update_lastlogin()

    meta.Session().commit()

    # Start new session to prevent session fixation attacks.

    session.invalidate()

    session['authuser'] = cookie = auth_user.to_cookie()

    # If they want to be remembered, update the cookie.

    # NOTE: Assumes that beaker defaults to browser session cookie.

    if remember:

        t = datetime.datetime.now() + datetime.timedelta(days=365)

        session._set_cookie_expires(t)

    session.save()

    log.info('user %s is now authenticated and stored in '

             'session, session attrs %s', user.username, cookie)

    # dumps session attrs back to cookie

    session._update_cookie_out()

    return auth_user

class BasicAuth(paste.auth.basic.AuthBasicAuthenticator):

    def __init__(self, realm, authfunc, auth_http_code=None):

        self.realm = realm

        self.authfunc = authfunc

        self._rc_auth_http_code = auth_http_code

    def build_authentication(self, environ):

        head = paste.httpheaders.WWW_AUTHENTICATE.tuples('Basic realm="%s"' % self.realm)