/usr/share/racket/collects/ffi/com-registry.rkt is in racket-common 6.7-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | #lang racket/base
(require ffi/unsafe
ffi/winapi
"unsafe/private/win32.rkt")
;; Implements MysterX's "coclass" lookup, which is deprecated
(provide com-all-coclasses
com-all-controls
coclass->clsid
clsid->coclass)
;; ----------------------------------------
;; Registry
(define _HKEY (_cpointer/null 'HKEY))
(define KEY_QUERY_VALUE #x1)
(define KEY_SET_VALUE #x2)
(define KEY_READ #x20019)
(define ERROR_SUCCESS 0)
(define ERROR_MORE_DATA 234)
(define ERROR_NO_MORE_ITEMS 259)
(define (const-hkey v)
(cast (bitwise-ior v (arithmetic-shift -1 32)) _intptr _HKEY))
(define HKEY_CLASSES_ROOT (const-hkey #x80000000))
(define HKEY_CURRENT_USER (const-hkey #x80000001))
(define HKEY_LOCAL_MACHINE (const-hkey #x80000002))
(define HKEY_USERS (const-hkey #x80000003))
(define HKEY_CURRENT_CONFIG (const-hkey #x80000005))
(define REG_SZ 1)
(define REG_BINARY 3)
(define REG_DWORD 4)
(define-advapi RegOpenKeyExW (_hfun _HKEY _string/utf-16 _DWORD _REGSAM (hkey : (_ptr o _HKEY))
-> RegOpenKeyExW hkey))
(define-advapi RegEnumKeyExW (_wfun _HKEY _DWORD _pointer (_ptr io _DWORD)
(_pointer = #f) ; reserved; must be NULL
(_pointer = #f) (_pointer = #f) ; class
(_pointer = #f) ; filetime
-> (r : _LONG)))
(define (RegEnumKeyExW* hkey index)
(let loop ([sz 256])
(define bstr (make-bytes sz))
(define r (RegEnumKeyExW hkey index bstr (quotient sz 2)))
(cond
[(= r ERROR_SUCCESS) (cast bstr _pointer _string/utf-16)]
[(= r ERROR_MORE_DATA) (loop (* sz 2))]
[(= r ERROR_NO_MORE_ITEMS) #f]
[else (error "RegEnumKeyExW failed")])))
(define-advapi RegCreateKeyExW (_wfun _HKEY _string/utf-16 (_DWORD = 0)
(_pointer = #f) ; class
_DWORD ; options
_REGSAM
_pointer ; security
(hkey : (_ptr o _HKEY))
(_ptr o _DWORD) ; disposition
-> (r : _LONG)
-> (and (= r ERROR_SUCCESS) hkey)))
(define-advapi RegQueryValueExW (_wfun _HKEY _string/utf-16 (_pointer = #f)
(type : (_ptr o _DWORD))
_pointer (len : (_ptr io _DWORD))
-> (r : _LONG)
-> (if (= r ERROR_SUCCESS)
(values len type)
(values #f #f))))
(define-advapi RegSetValueExW (_wfun _HKEY _string/utf-16 (_pointer = #f)
_DWORD _pointer _DWORD
-> (r : _LONG)
-> (= r ERROR_SUCCESS)))
(define-advapi RegCloseKey (_hfun _HKEY -> RegCloseKey (void)))
(define CLSIDLEN 38)
(define KEY_WOW64_64KEY #x0100)
(define KEY_WOW64_32KEY #x0200)
(define wow-flags
(if win64?
(list KEY_WOW64_64KEY KEY_WOW64_32KEY)
(list 0)))
(define (enum-keys rx include-clsid? include-name? convert all?)
(let wloop ([wow-flags wow-flags])
(cond
[(null? wow-flags) (if all? null #f)]
[else
(define r
(let ([hkey (RegOpenKeyExW HKEY_CLASSES_ROOT "CLSID" 0
(bitwise-ior (car wow-flags) KEY_READ))])
(begin0
(let loop ([key-index 0])
(define sub (RegEnumKeyExW* hkey key-index))
(cond
[(not sub) (if all? null #f)]
[(not (= CLSIDLEN (string-length sub)))
;; Bogus entry? Skip it.
(loop (add1 key-index))]
[(not (include-clsid? sub))
(loop (add1 key-index))]
[else
(define sub-hkey (RegOpenKeyExW hkey sub 0 KEY_READ))
(define buffer (make-bytes 256))
(define-values (len type) (RegQueryValueExW sub-hkey "" buffer (bytes-length buffer)))
(cond
[(and type
(= type REG_SZ))
(define name (cast buffer _pointer _string/utf-16))
(if (include-name? name)
(let sloop ([sub-key-index 0])
(define subsub (RegEnumKeyExW* sub-hkey sub-key-index))
(cond
[(not subsub)
(RegCloseKey sub-hkey)
(loop (add1 key-index))]
[(regexp-match? rx subsub)
(RegCloseKey sub-hkey)
(define val (convert sub name subsub))
(if all?
(cons val (loop (add1 key-index)))
val)]
[else
(sloop (add1 sub-key-index))]))
(begin
(RegCloseKey sub-hkey)
(loop (add1 key-index))))]
[else
(RegCloseKey sub-hkey)
(loop (add1 key-index))])]))
(RegCloseKey hkey))))
(cond
[all? (append (wloop (cdr wow-flags)) r)]
[r r]
[else (wloop (cdr wow-flags))])])))
(define rx:object #rx"^(?i:InprocServer|InprocServer32|LocalServer|LocalServer32)$")
(define rx:control #rx"^(?i:control)$")
(define (com-all-coclasses)
(sort-and-filter
(enum-keys rx:object
(lambda (sub) #t)
(lambda (name) #t)
(lambda (sub name subsub) name)
#t)))
(define (com-all-controls)
(sort-and-filter
(enum-keys rx:control
(lambda (sub) #t)
(lambda (name) #t)
(lambda (sub name subsub) name)
#t)))
(define (sort-and-filter l)
(let loop ([l (sort l string-ci<?)])
(cond
[(null? l) null]
[(null? (cdr l)) l]
[(string-ci=? (car l) (cadr l))
(loop (cdr l))]
[else (cons (car l) (loop (cdr l)))])))
(define (coclass->clsid coclass)
(enum-keys rx:object
(lambda (sub) #t)
(lambda (name) (equal? name coclass))
(lambda (sub name subsub) (string->guid sub))
#f))
(define (clsid->coclass clsid)
(enum-keys rx:object
(lambda (sub)
(define clsid2 (string->guid sub))
(guid=? clsid clsid2))
(lambda (name) #t)
(lambda (sub name subsub) name)
#f))
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