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|
;;; url-auth-tests.el --- Test suite for url-auth. -*- lexical-binding:t -*-
;; Copyright (C) 2015-2020 Free Software Foundation, Inc.
;; Author: Jarno Malmari <jarno@malmari.fi>
;; This file is part of GNU Emacs.
;; GNU Emacs 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.
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Test HTTP authentication methods.
;;; Code:
(require 'ert)
(require 'url-auth)
(defvar url-auth-test-challenges nil
"List of challenges for testing.
Each challenge is a plist. Values are as presented by the
server's WWW-Authenticate header field.")
;; Set explicitly for easier modification for re-runs.
(setq url-auth-test-challenges
(list
(list :qop "auth"
:nonce "uBr3+qkQBybTr/dKWkmpUqVO7SaEwWYzyTKO7g==$"
:uri "/random/path"
:method "GET"
:realm "Some test realm"
:cnonce "YWU4NDcxYWMxMDAxMjlkMjAwMDE4MjI5MDAwMGY4NGQ="
:nc "00000001"
:username "jytky"
:password "xi5Ac2HEfKt1lKKO05DCSqsK0u7hqqtsT"
:expected-ha1 "af521db3a83abd91262fead04fa31892"
:expected-ha2 "e490a6a147c79404b365d1f6059ddda5"
:expected-response "ecb6396e93b9e09e31f19264cfd8f854")
(list :nonce "a1be8a3065e00c5bf190ad499299aea5"
:opaque "d7c2a27230fc8c74bb6e06be8c9cd189"
:realm "The Test Realm"
:username "user"
:password "passwd"
:uri "/digest-auth/auth/user/passwd"
:method "GET"
:expected-ha1 "19c41161a8720edaeb7922ef8531137d"
:expected-ha2 "b44272ea65ee4af7fb26c5dba58f6863"
:expected-response "46c47a6d8e1fa95a3efcf49724af3fe7")
(list :nonce "servernonce"
:username "user"
:password "passwd"
:realm "The Test Realm 1"
:uri "/digest-auth/auth/user/passwd"
:method "GET"
:expected-ha1 "00f848f943c9a05dd06c932a7334f120"
:expected-ha2 "b44272ea65ee4af7fb26c5dba58f6863"
:expected-response "b8a48cdc9aa9e514509a5a5c53d4e8cf")
(list :nonce "servernonce"
:username "user"
:password "passwd"
:realm "The Test Realm 2"
:uri "/digest-auth/auth/user/passwd"
:method "GET"
:expected-ha1 "74d6abd3651d6b8260733d8a4c37ec1a"
:expected-ha2 "b44272ea65ee4af7fb26c5dba58f6863"
:expected-response "0d84884d967e04440efc77e9e2b5b561")))
(ert-deftest url-auth-test-colonjoin ()
"Check joining strings with `:'."
(should (string= (url-digest-auth-colonjoin) ""))
(should (string= (url-digest-auth-colonjoin nil) ""))
(should (string= (url-digest-auth-colonjoin nil nil nil) "::"))
(should (string= (url-digest-auth-colonjoin "") ""))
(should (string= (url-digest-auth-colonjoin "" "") ":"))
(should (string= (url-digest-auth-colonjoin "one") "one"))
(should (string= (url-digest-auth-colonjoin "one" "two" "three") "one:two:three")))
(ert-deftest url-auth-test-digest-ha1 ()
"Check HA1 computation."
(dolist (row url-auth-test-challenges)
(should (string= (url-digest-auth-make-ha1 (plist-get row :username)
(plist-get row :realm)
(plist-get row :password))
(plist-get row :expected-ha1)
))))
(ert-deftest url-auth-test-digest-ha2 ()
"Check HA2 computation."
(dolist (row url-auth-test-challenges)
(should (string= (url-digest-auth-make-ha2 (plist-get row :method)
(plist-get row :uri))
(plist-get row :expected-ha2)))))
(ert-deftest url-auth-test-digest-request-digest ()
"Check digest response value."
(dolist (row url-auth-test-challenges)
(should (string= (plist-get row :expected-response)
(if (plist-member row :qop)
(url-digest-auth-make-request-digest-qop
(plist-get row :qop)
(plist-get row :expected-ha1)
(plist-get row :expected-ha2)
(plist-get row :nonce)
(plist-get row :nc)
(plist-get row :cnonce))
(url-digest-auth-make-request-digest
(plist-get row :expected-ha1)
(plist-get row :expected-ha2)
(plist-get row :nonce)))))))
(ert-deftest url-auth-test-digest-create-key ()
"Check user credentials in their hashed form."
(dolist (challenge url-auth-test-challenges)
(let ((key (url-digest-auth-create-key (plist-get challenge :username)
(plist-get challenge :password)
(plist-get challenge :realm)
(plist-get challenge :method)
(plist-get challenge :uri))))
(should (= (length key) 2))
(should (string= (nth 0 key) (plist-get challenge :expected-ha1)))
(should (string= (nth 1 key) (plist-get challenge :expected-ha2)))
)))
(ert-deftest url-auth-test-digest-auth-retrieve-cache ()
"Check how the entry point retrieves cached authentication.
Essential is how realms and paths are matched."
(let* ((url-digest-auth-storage
'(("example.org:80"
("/path/auth1" "auth1user" "key")
("/path" "pathuser" "key")
("/" "rootuser" "key")
("realm1" "realm1user" "key")
("realm2" "realm2user" "key")
("/path/auth2" "auth2user" "key"))
("example.org:443"
("realm" "secure_user" "key"))
("rootless.org:80" ; no "/" entry for this on purpose
("/path" "pathuser" "key")
("realm" "realmuser" "key"))))
(attrs (list (cons "nonce" "servernonce")))
auth)
(dolist (row (list
;; If :expected-user is `nil' it indicates
;; authentication information shouldn't be found.
;; non-existent server
(list :url "http://other.com/path"
:realm nil :expected-user nil)
;; unmatched port
(list :url "http://example.org:444/path"
:realm nil :expected-user nil)
;; root, no realm
(list :url "http://example.org/"
:realm nil :expected-user "rootuser")
;; root, no realm, explicit port
(list :url "http://example.org:80/"
:realm nil :expected-user "rootuser")
(list :url "http://example.org/unknown"
:realm nil :expected-user "rootuser")
;; realm specified, overrides any path
(list :url "http://example.org/"
:realm "realm1" :expected-user "realm1user")
;; realm specified, overrides any path
(list :url "http://example.org/"
:realm "realm2" :expected-user "realm2user")
;; authentication determined by path
(list :url "http://example.org/path/auth1/query"
:realm nil :expected-user "auth1user")
;; /path shadows /path/auth2, hence pathuser is expected
(list :url "http://example.org/path/auth2/query"
:realm nil :expected-user "pathuser")
(list :url "https://example.org/path"
:realm nil :expected-user "secure_user")
;; not really secure user but using the same port
(list :url "http://example.org:443/path"
:realm nil :expected-user "secure_user")
;; preferring realm user over path, even though no
;; realm specified (not sure why)
(list :url "http://rootless.org/"
:realm nil :expected-user "realmuser")
;; second variant for the same case
(list :url "http://rootless.org/unknown/path"
:realm nil :expected-user "realmuser")
;; path match
(list :url "http://rootless.org/path/query?q=a"
:realm nil :expected-user "pathuser")
;; path match, realm match, prefer realm
(list :url "http://rootless.org/path/query?q=a"
:realm "realm" :expected-user "realmuser")
))
(setq auth (url-digest-auth (plist-get row :url)
nil nil
(plist-get row :realm) attrs))
(if (plist-get row :expected-user)
(progn (should auth)
(should (string-match ".*username=\"\\(.*?\\)\".*" auth))
(should (string= (match-string 1 auth)
(plist-get row :expected-user))))
(should-not auth)))))
(ert-deftest url-auth-test-digest-auth ()
"Check common authorization string contents.
Challenges with qop are not checked for response since a unique
cnonce is used for generating them which is not mocked by the
test and cannot be passed by arguments to `url-digest-auth'."
(dolist (challenge url-auth-test-challenges)
(let* ((attrs (append
(list (cons "nonce" (plist-get challenge :nonce)))
(if (plist-get challenge :qop)
(list (cons "qop" (plist-get challenge :qop))))))
(url (concat "http://example.org" (plist-get challenge :uri)))
url-digest-auth-storage
auth)
;; Add authentication info to cache so `url-digest-auth' can
;; complete without prompting minibuffer input.
(setq url-digest-auth-storage
(list
(list "example.org:80"
(cons (or (plist-get challenge :realm) "/")
(cons (plist-get challenge :username)
(url-digest-auth-create-key
(plist-get challenge :username)
(plist-get challenge :password)
(plist-get challenge :realm)
(plist-get challenge :method)
(plist-get challenge :uri)))))))
(setq auth (url-digest-auth (url-generic-parse-url url) nil nil
(plist-get challenge :realm) attrs))
(should auth)
(should (string-prefix-p "Digest " auth))
(should (string-match ".*username=\"\\(.*?\\)\".*" auth))
(should (string= (match-string 1 auth)
(plist-get challenge :username)))
(should (string-match ".*realm=\"\\(.*?\\)\".*" auth))
(should (string= (match-string 1 auth)
(plist-get challenge :realm)))
(if (plist-member challenge :qop)
(progn
;; We don't know these, just check that they exists.
(should (string-match-p ".*response=\".*?\".*" auth))
(should (string-match-p ".*nc=\".*?\".*" auth))
(should (string-match-p ".*cnonce=\".*?\".*" auth)))
(should (string-match ".*response=\"\\(.*?\\)\".*" auth))
(should (string= (match-string 1 auth)
(plist-get challenge :expected-response))))
)))
(ert-deftest url-auth-test-digest-auth-opaque ()
"Check that `opaque' value is added to result when presented by
the server."
(let* ((url-digest-auth-storage
'(("example.org:80" ("/" "user" "key"))))
(attrs (list (cons "nonce" "anynonce")))
auth)
;; Get authentication info from cache without `opaque'.
(setq auth (url-digest-auth "http://example.org/path" nil nil nil attrs))
(should auth)
(should-not (string-match-p "opaque=" auth))
;; Add `opaque' to attributes.
(push (cons "opaque" "opaque-value") attrs)
(setq auth (url-digest-auth "http://example.org/path" nil nil nil attrs))
(should auth)
(should (string-match ".*opaque=\"\\(.*?\\)\".*" auth))
(should (string= (match-string 1 auth) "opaque-value"))))
(provide 'url-auth-tests)
;;; url-auth-tests.el ends here
|
