couldn't find HOME environment variable to expand path
while executing
"file normalize $dir"
(procedure "cache" line 3)
invoked from within
"cache [file join ~ .critcl [platform::identify]]"
(procedure "setconfig" line 66)
invoked from within
"setconfig "" "
(procedure "readconfig" line 176)
invoked from within
"readconfig [file join $mydir Config]"
(procedure "::critcl::Initialize" line 39)
invoked from within
"::critcl::Initialize"
(file "/commun/linux/local/ActiveTcl-8.6.11/lib/tcl8.6/critcl3.1.17/critcl.tcl" line 5924)
invoked from within
"source /commun/linux/local/ActiveTcl-8.6.11/lib/tcl8.6/critcl3.1.17/critcl.tcl"
("package ifneeded critcl 3.1.17" script)
invoked from within
"package require critcl"
(in namespace eval "::request" script line 23)
invoked from within
"namespace eval ::request $script"
("::try" body line 12)
OUTPUT BUFFER:
# md5cryptc.tcl - Copyright (C) 2003 Pat Thoyts
#
# This is a critcl-based wrapper to provide a Tcl implementation of the md5crypt
# function. The C code here is based upon the OpenBSD source, which is in turn
# derived from the original implementation by Poul-Henning Kamp
#
# The original C source license reads:
#/*
# * ----------------------------------------------------------------------------
# * "THE BEER-WARE LICENSE" (Revision 42):
# * wrote this file. As long as you retain this notice you
# * can do whatever you want with this stuff. If we meet some day, and you think
# * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
# * ----------------------------------------------------------------------------
# */
#
# -------------------------------------------------------------------------
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
# -------------------------------------------------------------------------
package require critcl
# @sak notprovided md5cryptc
package provide md5cryptc 1.0
critcl::cheaders ../md5/md5.h
#critcl::csources ../md5/md5.c
namespace eval ::md5crypt {
critcl::ccode {
#include
#include "md5.h"
#ifdef _MSC_VER
#define snprintf _snprintf
#endif
static unsigned char itoa64[] =
"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
static void to64(char *s, unsigned int v, int n)
{
while (--n >= 0) {
*s++ = itoa64[v&0x3f];
v >>= 6;
}
}
static void dump(const char *s, unsigned int len)
{
unsigned int i;
for (i = 0; i < len; i++)
printf("%02X", s[i]&0xFF);
putchar('\n');
}
static char * md5crypt(const char *pw,
const char *salt,
const char *magic)
{
static char passwd[120], *p;
static const unsigned char *sp,*ep;
unsigned char final[16];
int sl,pl,i;
MD5_CTX ctx,ctx1;
unsigned long l;
/* Refine the Salt first */
sp = (const unsigned char *)salt;
/* If it starts with the magic string, then skip that */
if(!strncmp((const char *)sp,(const char *)magic,strlen((const char *)magic)))
sp += strlen((const char *)magic);
/* It stops at the first '$', max 8 chars */
for(ep=sp;*ep && *ep != '$' && ep < (sp+8);ep++)
continue;
/* get the length of the true salt */
sl = ep - sp;
MD5Init(&ctx);
/* The password first, since that is what is most unknown */
MD5Update(&ctx,(unsigned char *)pw,strlen(pw));
/* Then our magic string */
MD5Update(&ctx,(unsigned char *)magic,strlen((const char *)magic));
/* Then the raw salt */
MD5Update(&ctx,(unsigned char*)sp,sl);
/* Then just as many characters of the MD5(pw,salt,pw) */
MD5Init(&ctx1);
MD5Update(&ctx1,(unsigned char *)pw,strlen(pw));
MD5Update(&ctx1,(unsigned char *)sp,sl);
MD5Update(&ctx1,(unsigned char *)pw,strlen(pw));
MD5Final(final,&ctx1);
for(pl = strlen(pw); pl > 0; pl -= 16) {
int tl = pl > 16 ? 16 : pl;
MD5Update(&ctx,final,pl>16 ? 16 : pl);
}
/* Don't leave anything around in vm they could use. */
memset(final,0,sizeof final);
/* Then something really weird... */
for (i = strlen(pw); i ; i >>= 1) {
if(i&1)
MD5Update(&ctx, final, 1);
else
MD5Update(&ctx, (unsigned char *)pw, 1);
}
/* Now make the output string */
snprintf(passwd, sizeof(passwd), "%s%.*s$", (char *)magic,
sl, (const char *)sp);
MD5Final(final,&ctx);
/*
* and now, just to make sure things don't run too fast
* On a 60 Mhz Pentium this takes 34 msec, so you would
* need 30 seconds to build a 1000 entry dictionary...
*/
for(i=0;i<1000;i++) {
MD5Init(&ctx1);
if(i & 1)
MD5Update(&ctx1,(unsigned char *)pw,strlen(pw));
else
MD5Update(&ctx1,final,16);
if(i % 3)
MD5Update(&ctx1,(unsigned char *)sp,sl);
if(i % 7)
MD5Update(&ctx1,(unsigned char *)pw,strlen(pw));
if(i & 1)
MD5Update(&ctx1,final,16);
else
MD5Update(&ctx1,(unsigned char *)pw,strlen(pw));
MD5Final(final,&ctx1);
}
p = passwd + strlen(passwd);
l = (final[ 0]<<16) | (final[ 6]<<8) | final[12]; to64(p,l,4); p += 4;
l = (final[ 1]<<16) | (final[ 7]<<8) | final[13]; to64(p,l,4); p += 4;
l = (final[ 2]<<16) | (final[ 8]<<8) | final[14]; to64(p,l,4); p += 4;
l = (final[ 3]<<16) | (final[ 9]<<8) | final[15]; to64(p,l,4); p += 4;
l = (final[ 4]<<16) | (final[10]<<8) | final[ 5]; to64(p,l,4); p += 4;
l = final[11] ; to64(p,l,2); p += 2;
*p = '\0';
/* Don't leave anything around in vm they could use. */
memset(final,0,sizeof final);
return passwd;
}
}
critcl::cproc to64_c {Tcl_Interp* interp int v int n} ok {
char s[5];
to64(s, (unsigned int)v, n);
Tcl_SetObjResult(interp, Tcl_NewStringObj(s, n));
return TCL_OK;
}
critcl::cproc md5crypt_c {Tcl_Interp* interp char* magic char* pw char* salt} ok {
char* s = md5crypt(pw, salt, magic);
Tcl_SetObjResult(interp, Tcl_NewStringObj(s, strlen(s)));
return TCL_OK;
}
}