/usr/share/tcltk/tcllib1.14/sha1/sha1c.tcl is in tcllib 1.14-dfsg-1.
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 | # sha1c.tcl - Copyright (C) 2005 Pat Thoyts <patthoyts@users.sourceforge.net>
#
# Wrapper for the Secure Hashing Algorithm (SHA1)
#
# $Id: sha1c.tcl,v 1.6 2009/05/07 00:35:10 patthoyts Exp $
package require critcl; # needs critcl
# @sak notprovided sha1c
package provide sha1c 2.0.3
critcl::cheaders sha1.h; # NetBSD SHA1 implementation
critcl::csources sha1.c; # NetBSD SHA1 implementation
if {$tcl_platform(byteOrder) eq "littleEndian"} {
set byteOrder 1234
} else {
set byteOrder 4321
}
critcl::cheaders -DTCL_BYTE_ORDER=$byteOrder
namespace eval ::sha1 {
critcl::ccode {
#include "sha1.h"
#include <stdlib.h>
#include <assert.h>
static
Tcl_ObjType sha1_type; /* fast internal access representation */
static void
sha1_free_rep(Tcl_Obj* obj)
{
SHA1_CTX* mp = (SHA1_CTX*) obj->internalRep.otherValuePtr;
Tcl_Free(mp);
}
static void
sha1_dup_rep(Tcl_Obj* obj, Tcl_Obj* dup)
{
SHA1_CTX* mp = (SHA1_CTX*) obj->internalRep.otherValuePtr;
dup->internalRep.otherValuePtr = Tcl_Alloc(sizeof *mp);
memcpy(dup->internalRep.otherValuePtr, mp, sizeof *mp);
dup->typePtr = &sha1_type;
}
static void
sha1_string_rep(Tcl_Obj* obj)
{
unsigned char buf[20];
Tcl_Obj* temp;
char* str;
SHA1_CTX dup = *(SHA1_CTX*) obj->internalRep.otherValuePtr;
SHA1Final(buf, &dup);
/* convert via a byte array to properly handle null bytes */
temp = Tcl_NewByteArrayObj(buf, sizeof buf);
Tcl_IncrRefCount(temp);
str = Tcl_GetStringFromObj(temp, &obj->length);
obj->bytes = Tcl_Alloc(obj->length + 1);
memcpy(obj->bytes, str, obj->length + 1);
Tcl_DecrRefCount(temp);
}
static int
sha1_from_any(Tcl_Interp* ip, Tcl_Obj* obj)
{
assert(0);
return TCL_ERROR;
}
static
Tcl_ObjType sha1_type = {
"sha1c", sha1_free_rep, sha1_dup_rep, sha1_string_rep,
sha1_from_any
};
}
critcl::ccommand sha1c {dummy ip objc objv} {
SHA1_CTX* mp;
unsigned char* data;
int size;
Tcl_Obj* obj;
if (objc < 2 || objc > 3) {
Tcl_WrongNumArgs(ip, 1, objv, "data ?context?");
return TCL_ERROR;
}
if (objc == 3) {
if (objv[2]->typePtr != &sha1_type
&& sha1_from_any(ip, objv[2]) != TCL_OK) {
return TCL_ERROR;
}
obj = objv[2];
if (Tcl_IsShared(obj)) {
obj = Tcl_DuplicateObj(obj);
}
} else {
obj = Tcl_NewObj();
mp = (SHA1_CTX*) Tcl_Alloc(sizeof *mp);
SHA1Init(mp);
if (obj->typePtr != NULL && obj->typePtr->freeIntRepProc != NULL) {
obj->typePtr->freeIntRepProc(obj);
}
obj->internalRep.otherValuePtr = mp;
obj->typePtr = &sha1_type;
}
Tcl_InvalidateStringRep(obj);
mp = (SHA1_CTX*) obj->internalRep.otherValuePtr;
data = Tcl_GetByteArrayFromObj(objv[1], &size);
SHA1Update(mp, data, size);
Tcl_SetObjResult(ip, obj);
return TCL_OK;
}
}
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