blob: e42fdb90eeb261d8106d5c8a82fbed4fdbdf6140 (
about) (
plain)
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
|
(define-module (ctftilde)
#:use-module ((srfi srfi-26) #:select (cut))
#:use-module ((ice-9 control) #:select (let/ec))
#:use-module ((ice-9 exceptions) #:select
(raise-exception with-exception-handler))
#:use-module ((ice-9 format) #:select (format))
#:use-module ((ice-9 getopt-long) #:select (getopt-long option-ref))
#:use-module ((ice-9 match) #:select (match match-lambda match-let))
#:use-module ((ice-9 textual-ports) #:prefix tp:)
#:use-module ((system repl debug) #:select (terminal-width))
#:use-module ((ctftilde main-site) #:select (run-website))
#:use-module ((ctftilde password) #:select (encrypt-password))
#:use-module ((ctftilde users) #:prefix cu:)
#:export (main))
(define %ctftilde-exit
(make-parameter (lambda _
(raise-exception
"%ctftilde-exit called while not parameterized."))))
(define (error-exit fmt . format-args)
(apply format (current-error-port)
fmt format-args)
((%ctftilde-exit) EXIT_FAILURE))
(define (require-option options option-sym)
(match (option-ref options option-sym #f)
(#f
(error-exit "--~a is required for this action.~%" option-sym))
(value
value)))
(define %option-spec
'((site-host (single-char #\h) (value #f))
(user-delete (single-char #\d) (value #f))
(user-make (single-char #\m) (value #f))
(users-recreate (single-char #\r) (value #f))
(password-file (single-char #\p) (value #t))
(username (single-char #\u) (value #t))
(log-file (single-char #\l) (value #t))))
(define (site-host options)
(match-let (((sock-child . sock-parent) (socketpair AF_UNIX SOCK_STREAM 0)))
(force-output (current-output-port))
(force-output (current-error-port))
(match (primitive-fork)
(0
(let ((user (getpwnam "ctftilde")))
(close-port sock-parent)
(setgid (passwd:gid user))
(setuid (passwd:uid user))
(run-website sock-child sock-child)
;; Likely unreachable.
(close-port sock-child)))
(child-pid
(close-port sock-child)
(cu:make-users-from-port sock-parent sock-parent)
;; Other side should be closed already.
(close-port sock-parent)
(let ((status (cdr (waitpid child-pid))))
(when (> status 0)
(error-exit
"HTTP server child process terminated with error. Stopping daemon.~%"))
status)))))
(define (user-delete options)
(define username
(require-option options 'username))
(cu:delete-user username))
(define (user-make options)
(define username
(require-option options 'username))
(define password
(call-with-input-file (require-option options 'password-file)
tp:get-string-all))
(define encrypted-password
(encrypt-password password))
(call-with-output-file "/dev/null"
(cut cu:make-user <> username encrypted-password)))
(define (users-recreate options)
(cu:delete-users-from-dir)
(cu:make-users-from-dir))
(define %actions
;; global args
(map (cut append <> '(log-file))
;; handler action allowed args
`((,site-host site-host . ())
(,user-delete user-delete . (username))
(,user-make user-make . (password-file username))
(,users-recreate users-recreate . ()))))
(define (*main options)
(define chosen-actions
(filter (match-lambda ((_ action-sym . _)
(option-ref options action-sym #f)))
%actions))
(match chosen-actions
(()
(error-exit "You need to choose one of the following actions: ~{--~a~^, ~}.~%"
(map cadr %actions)))
(((action-handler . (and action-allowed-args
(action-sym . _)))
. _)
(match (filter (lambda (option-sym)
(and (not (memq option-sym action-allowed-args))
(option-ref options option-sym #f)))
(map car %option-spec))
((illegal-option-sym . _)
(error-exit "You cannot use --~a with --~a.~%"
illegal-option-sym action-sym))
(()
(action-handler options))))))
(define (with-log-output-file path thunk)
(call-with-output-file path
(lambda (port)
;; There're some issues with log messages not going to the right fd but I
;; cba to investigate in more depth.
(parameterize ((current-output-port port)
(current-error-port port))
(thunk)))))
(define (call-with-logging-to-file path thunk)
(define logging-port
(open-file path "a"))
(setvbuf logging-port 'line)
(dynamic-wind
noop
(lambda _
(parameterize ((current-output-port logging-port)
(current-error-port logging-port))
(thunk)))
(cut close-port logging-port)))
(define (main . cli-args)
(define options
(getopt-long cli-args %option-spec))
(define (with-log-output thunk)
(match (option-ref options 'log-file #f)
(#f
(thunk))
(path
(call-with-logging-to-file path thunk))))
(with-log-output
(lambda _
(let/ec escape
(start-stack 'ctftilde
(parameterize ((%ctftilde-exit escape))
(with-exception-handler (lambda (ex)
(terminal-width 80)
(let ((err (current-error-port)))
(display-backtrace (make-stack #t) err 2)
(format err "~%~a~%~%" ex)
(escape EXIT_FAILURE)))
(lambda _
(*main options)
0))))))))
|
