| ︙ | | |
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
+
+
|
package require sha1
package require appfsd
package require platform
package require pki
# Functions specifically meant for users to replace as a part of configuration
namespace eval ::appfs::user {
variable download_method "tcl"
# User-replacable function to convert a hostname/hash/method to an URL
proc construct_url {hostname hash method} {
return "http://$hostname/appfs/$method/$hash"
}
# User-replaceable function get the home directory of the current user
proc get_homedir {} {
|
| ︙ | | |
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
+
+
+
+
+
-
-
-
+
-
-
-
-
-
-
+
|
if {[info exists ::appfs::user::add_perms($sha1)]} {
append perms $::appfs::user::add_perms($sha1)
}
return $perms
}
# User-replacable function to fetch a remote file
proc download_file {url {outputChannel ""}} {
switch -- $::appfs::user::download_method {
"curl" {
if {$outputChannel eq ""} {
return [exec curl -sS -L -- $url]
} else {
exec curl -sS -L -- $url >@ $outputChannel
return ""
}
}
"tcl" {
catch {
if {$outputChannel eq ""} {
set token [http::geturl $url]
set retval [http::data $token]
} else {
set token [http::geturl $url -binary true -channel $outputChannel]
set retval ""
}
} err
if {![info exists token]} {
return -code error "Unable to download \"$url\": $err"
}
set tokenCode [http::ncode $token]
http::cleanup $token
if {$tokenCode != "200"} {
return -code error "Unable to download \"$url\": Site did not return a 200 (returned $tokenCode)"
}
if {![info exists retval]} {
return -code error "Unable to download \"$url\": Site did not return proper data: $err"
}
return $retval
}
}
return -code error "Unable to download"
}
}
namespace eval ::appfs {
variable cachedir "/tmp/appfs-cache"
variable ttl 3600
variable nttl 60
variable trusted_cas [list]
variable platform [::platform::generic]
proc _hash_sep {hash {seps 4}} {
for {set idx 0} {$idx < $seps} {incr idx} {
append retval "[string range $hash [expr {$idx * 2}] [expr {($idx * 2) + 1}]]/"
}
append retval "[string range $hash [expr {$idx * 2}] end]"
return $retval
}
proc _cachefile {url key {keyIsHash 1}} {
proc _cachefile {url key method {keyIsHash 1}} {
if {$keyIsHash && $method != "sha1"} {
return -code error "Only SHA1 hashing method is supported"
}
set filekey $key
if {$keyIsHash} {
set filekey [_hash_sep $filekey]
}
set file [file join $::appfs::cachedir $filekey]
file mkdir [file dirname $file]
if {[file exists $file]} {
return $file
}
set tmpfile "${file}.[expr {rand()}][clock clicks]"
set fd [open $tmpfile "w"]
fconfigure $fd -translation binary
catch {
set token [::http::geturl $url -channel $fd -binary true]
}
if {[info exists token]} {
set ncode [::http::ncode $token]
::http::reset $token
} else {
set ncode "900"
if {$ncode == "200" && $hash == $key} {
if {$hash == $key} {
file rename -force -- $tmpfile $file
} else {
file delete -force -- $tmpfile
}
return $file
}
|
| ︙ | | |
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
|
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
|
-
+
|
db eval {CREATE INDEX IF NOT EXISTS sites_index ON sites (hostname);}
db eval {CREATE INDEX IF NOT EXISTS packages_index ON packages (hostname, sha1, package, version, os, cpuArch);}
db eval {CREATE INDEX IF NOT EXISTS files_index ON files (package_sha1, file_name, file_directory);}
}
proc download {hostname hash {method sha1}} {
set url [::appfs::user::construct_url $hostname $hash $method]
set file [_cachefile $url $hash]
set file [_cachefile $url $hash $method]
if {![file exists $file]} {
return -code error "Unable to fetch (file does not exist: $file)"
}
return $file
}
|
| ︙ | | |
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
|
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
|
-
-
-
+
-
-
-
|
if {$now < ($lastUpdate + $ttl)} {
return COMPLETE
}
set url "http://$hostname/appfs/index"
catch {
set token [::http::geturl $url]
if {[::http::ncode $token] == "200"} {
set indexhash_data [::http::data $token]
}
::http::reset $token
::http::cleanup $token
|
| ︙ | | |