1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
;;; url-parse.el --- Uniform Resource Locator parser
;; Copyright (C) 1996-1999, 2004-2011 Free Software Foundation, Inc.
;; Keywords: comm, data, processes
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(require 'url-vars)
(require 'auth-source)
(eval-when-compile (require 'cl))
(autoload 'url-scheme-get-property "url-methods")
(defstruct (url
(:constructor nil)
(:constructor url-parse-make-urlobj
(&optional type user password host portspec filename
target attributes fullness))
(:copier nil))
type user password host portspec filename target attributes fullness silent)
(defsubst url-port (urlobj)
(or (url-portspec urlobj)
(if (url-fullness urlobj)
(url-scheme-get-property (url-type urlobj) 'default-port))))
(defsetf url-port (urlobj) (port) `(setf (url-portspec ,urlobj) ,port))
;;;###autoload
(defun url-recreate-url (urlobj)
"Recreate a URL string from the parsed URLOBJ."
(concat (url-type urlobj) ":" (if (url-host urlobj) "//" "")
(if (url-user urlobj)
(concat (url-user urlobj)
(if (url-password urlobj)
(concat ":" (url-password urlobj)))
"@"))
(url-host urlobj)
(if (and (url-port urlobj)
(not (equal (url-port urlobj)
(url-scheme-get-property (url-type urlobj) 'default-port))))
(format ":%d" (url-port urlobj)))
(or (url-filename urlobj) "/")
(url-recreate-url-attributes urlobj)
(if (url-target urlobj)
(concat "#" (url-target urlobj)))))
(defun url-recreate-url-attributes (urlobj)
"Recreate the attributes of an URL string from the parsed URLOBJ."
(when (url-attributes urlobj)
(concat ";"
(mapconcat (lambda (x)
(if (cdr x)
(concat (car x) "=" (cdr x))
(car x)))
(url-attributes urlobj) ";"))))
;;;###autoload
(defun url-generic-parse-url (url)
"Return an URL-struct of the parts of URL.
The CL-style struct contains the following fields:
TYPE USER PASSWORD HOST PORTSPEC FILENAME TARGET ATTRIBUTES FULLNESS."
;; See RFC 3986.
(cond
((null url)
(url-parse-make-urlobj))
((or (not (string-match url-nonrelative-link url))
(= ?/ (string-to-char url)))
;; This isn't correct, as a relative URL can be a fragment link
;; (e.g. "#foo") and many other things (see section 4.2).
;; However, let's not fix something that isn't broken, especially
;; when close to a release.
(url-parse-make-urlobj nil nil nil nil nil url))
(t
(with-temp-buffer
;; Don't let those temp-buffer modifications accidentally
;; deactivate the mark of the current-buffer.
(let ((deactivate-mark nil))
(set-syntax-table url-parse-syntax-table)
(let ((save-pos nil)
(prot nil)
(user nil)
(pass nil)
(host nil)
(port nil)
(file nil)
(refs nil)
(attr nil)
(full nil)
(inhibit-read-only t))
(erase-buffer)
(insert url)
(goto-char (point-min))
(setq save-pos (point))
;; 3.1. Scheme
(unless (looking-at "//")
(skip-chars-forward "a-zA-Z+.\\-")
(downcase-region save-pos (point))
(setq prot (buffer-substring save-pos (point)))
(skip-chars-forward ":")
(setq save-pos (point)))
;; 3.2. Authority
(when (looking-at "//")
(setq full t)
(forward-char 2)
(setq save-pos (point))
(skip-chars-forward "^/")
(setq host (buffer-substring save-pos (point)))
(if (string-match "^\\([^@]+\\)@" host)
(setq user (match-string 1 host)
host (substring host (match-end 0) nil)))
(if (and user (string-match "\\([^:]+\\):\\(.*\\)" user))
(setq pass (match-string 2 user)
user (match-string 1 user)))
;; This gives wrong results for IPv6 literal addresses.
(if (string-match ":\\([0-9+]+\\)" host)
(setq port (string-to-number (match-string 1 host))
host (substring host 0 (match-beginning 0))))
(if (string-match ":$" host)
(setq host (substring host 0 (match-beginning 0))))
(setq host (downcase host)
save-pos (point)))
(if (not port)
(setq port (url-scheme-get-property prot 'default-port)))
;; 3.3. Path
;; Gross hack to preserve ';' in data URLs
(setq save-pos (point))
;; 3.4. Query
(if (string= "data" prot)
(goto-char (point-max))
;; Now check for references
(skip-chars-forward "^#")
(if (eobp)
nil
(delete-region
(point)
(progn
(skip-chars-forward "#")
(setq refs (buffer-substring (point) (point-max)))
(point-max))))
(goto-char save-pos)
(skip-chars-forward "^;")
(unless (eobp)
(setq attr (url-parse-args (buffer-substring (point) (point-max))
t)
attr (nreverse attr))))
(setq file (buffer-substring save-pos (point)))
(if (and host (string-match "%[0-9][0-9]" host))
(setq host (url-unhex-string host)))
(url-parse-make-urlobj
prot user pass host port file refs attr full)))))))
(defmacro url-bit-for-url (method lookfor url)
`(let* ((urlobj (url-generic-parse-url url))
(bit (funcall ,method urlobj))
(methods (list 'url-recreate-url
'url-host)))
(while (and (not bit) (> (length methods) 0))
(setq bit
(auth-source-user-or-password
,lookfor (funcall (pop methods) urlobj) (url-type urlobj))))
bit))
(defun url-user-for-url (url)
"Attempt to use .authinfo to find a user for this URL."
(url-bit-for-url 'url-user "login" url))
(defun url-password-for-url (url)
"Attempt to use .authinfo to find a password for this URL."
(url-bit-for-url 'url-password "password" url))
(provide 'url-parse)
;;; url-parse.el ends here
|
