summaryrefslogtreecommitdiffstats
path: root/ldap/clients/dsgw/cookie.c
diff options
context:
space:
mode:
Diffstat (limited to 'ldap/clients/dsgw/cookie.c')
-rw-r--r--ldap/clients/dsgw/cookie.c990
1 files changed, 990 insertions, 0 deletions
diff --git a/ldap/clients/dsgw/cookie.c b/ldap/clients/dsgw/cookie.c
new file mode 100644
index 00000000..97c18b0d
--- /dev/null
+++ b/ldap/clients/dsgw/cookie.c
@@ -0,0 +1,990 @@
+/**
+ * PROPRIETARY/CONFIDENTIAL. Use of this product is subject to
+ * license terms. Copyright © 2001 Sun Microsystems, Inc.
+ * Some preexisting portions Copyright © 2001 Netscape Communications Corp.
+ * All rights reserved.
+ */
+/*
+ * cookie.c -- routines to generate and manipulate cookies for dsgw
+ *
+ * Copyright (c) 1996 Netscape Communications Corp.
+ * All rights reserved.
+ */
+
+#include "dsgw.h"
+
+#include "../../include/portable.h"
+
+#include <stdio.h>
+#if !defined( XP_WIN32 )
+#include <sys/param.h>
+#endif
+
+#include <ssl.h>
+#ifdef NSS38_AND_OLDER
+#include <secrng.h>
+#else
+#include "ecl-exp.h"
+#endif
+#include <nss.h>
+#include <base64.h>
+#include <sys/types.h>
+#include <limits.h>
+#include <string.h>
+
+#ifdef _WIN32
+#include <windows.h>
+#include <time.h>
+#include <io.h>
+#include <fcntl.h>
+#include <sys/locking.h>
+#else /* _WIN32 */
+#include <unistd.h>
+#endif /* _WIN32 */
+
+#include <pk11func.h>
+#include <pkcs11.h>
+#include <pk11pqg.h>
+
+
+static char *dsgw_MungeString(const char *unmunged_string);
+static char *dsgw_UnMungeString(const char *munged_string);
+static char *dsgw_encDec(CK_ATTRIBUTE_TYPE operation, const char *msg);
+void dsgw_initNSS(void);
+
+static char tokDes[34] = "Communicator Generic Crypto Svcs";
+static char ptokDes[34] = "Internal (Software) Token ";
+
+int dsgw_NSSInitializedAlready = 0;
+
+/* Table for converting binary values to and from hexadecimal */
+static char hex[] = "0123456789abcdef";
+#if 0
+static char dec[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0 - 15 */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 16 - 37 */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* ' ' - '/' */
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, /* '0' - '?' */
+ 0,10,11,12,13,14,15, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* '@' - 'O' */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 'P' - '_' */
+ 0,10,11,12,13,14,15, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* '`' - 'o' */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 'p' - DEL */
+};
+#endif
+
+
+#define CKLEN 32
+#define RNDBUFLEN ( CKLEN / 2 )
+#define CKBUFSIZ 255
+/*
+ * Given a buffer buf of length len, return a pointer to a string containing
+ * the hex-encoded version of buf. The caller is responsible for freeing
+ * the memory this routine allocates.
+ */
+static char *
+buf2str( unsigned char *buf, int len )
+{
+ char *obuf;
+ int i;
+ char *p;
+
+ if ( buf == NULL ) {
+ return NULL;
+ }
+
+ p = obuf = dsgw_ch_malloc( CKLEN + 1 );
+ for ( i = 0; i < len; i++) {
+ *p++ = hex[( buf[ i ] >> 4 ) & 0xf ];
+ *p++ = hex[( buf[ i ]) & 0xf ];
+ }
+ *p++ = '\0';
+ return obuf;
+}
+
+
+
+/*
+ * Generate a random string of hex-encoded digits, CKLEN characters in
+ * length. This routine allocates memory which the caller is responsible
+ * for freeing.
+ */
+char *
+dsgw_mkrndstr()
+{
+ unsigned char buf[ RNDBUFLEN ];
+
+ PK11_ConfigurePKCS11(NULL, NULL, tokDes, ptokDes, NULL, NULL, NULL, NULL, 0, 0 );
+ /*NSS_NoDB_Init(NULL);*/
+ dsgw_initNSS();
+ PK11_GenerateRandom(buf, RNDBUFLEN);
+ return( buf2str( buf, RNDBUFLEN ));
+}
+
+
+FILE *
+dsgw_opencookiedb()
+{
+ FILE *fp;
+ time_t now;
+ int newfile = 0;
+ char cdb[MAXPATHLEN]; /*DSGW_COOKIEDB_FNAME + context*/
+
+#ifdef XP_WIN32
+#ifndef F_OK
+#define F_OK 0
+#endif
+#endif
+ sprintf(cdb, "%s.%s", DSGW_COOKIEDB_FNAME, context);
+
+ if ( access( cdb, F_OK ) == 0 ) {
+ fp = fopen( cdb, "r+" );
+ } else {
+ newfile = 1;
+ fp = fopen( cdb, "w" );
+ }
+ if ( fp == NULL ) {
+ return NULL;
+ }
+ /* fseek( fp, 0L, SEEK_SET ); */
+#ifdef XP_WIN32
+ (void) chmod( cdb, _S_IREAD | _S_IWRITE );
+#else
+ (void) chmod( cdb, S_IRUSR | S_IWUSR );
+#endif
+
+ /* acquire a lock */
+#ifdef _WIN32
+ while ( _locking( _fileno( fp ), LK_NBLCK, 0xFFFFFFFF ) != 0 ) {
+#else
+#ifdef USE_LOCKF
+ while ( lockf( fileno( fp ), F_LOCK, 0 ) != 0 ) {
+#else /* _WIN32 */
+ while ( flock( fileno( fp ), LOCK_EX ) != 0 ) {
+#endif
+#endif /* _WIN32 */
+ ; /* NULL */
+ }
+ if ( newfile ) {
+ time( &now );
+ fprintf( fp, "lastpurge: %-20lu\n", now );
+ fflush( fp );
+ fseek( fp, 0L, SEEK_SET );
+ }
+ return fp;
+}
+
+
+void
+dsgw_closecookiedb( FILE *fp )
+{
+#ifdef _WIN32
+ _locking( _fileno( fp ), LK_UNLCK, 0xFFFFFFFF );
+#else /* _WIN32 */
+#ifdef USE_LOCKF
+ lockf( fileno( fp ), F_ULOCK, 0 );
+#else
+ flock( fileno( fp ), LOCK_UN );
+#endif
+#endif /* _WIN32 */
+ fclose( fp );
+}
+
+
+
+/*
+ * Return a pointer to the password associated with the given
+ * cookie and dn. If the cookie was not found in the database,
+ * or if the cookie has expired, 1 is returned. On success, 0 is returned
+ * and ret_pw is set to the password from the database. As a side effect,
+ * if the database has not been purged of expired entries in more than
+ * 10 minutes, the database is purged.
+ *
+ * As a special case, if the cookie is expired and gc->gc_mode is
+ * DSGW_MODE_DOMODIFY (that is, the user is saving a modified entry), then
+ * return 0 if the cookie has been expired for no more than 5 minutes.
+ * This keeps users from being frustrated by getting an editable view of
+ * an entry and having the cookie expire while editing.
+ * The caller is responsible for freeing ret_pw.
+ */
+int
+dsgw_ckdn2passwd( char *rndstr, char *dn, char **ret_pw )
+{
+ FILE *fp;
+ char buf[ CKBUFSIZ ];
+ char *p, *pw, *lifetimestr, *cdn;
+ time_t now;
+ int expired = 0;
+
+ if ( !strcmp( rndstr, DSGW_UNAUTHSTR )) {
+ *ret_pw = NULL;
+ return 0;
+ }
+
+ if (( fp = dsgw_opencookiedb()) == NULL ) {
+ return DSGW_CKDB_CANTOPEN;
+ }
+
+ for (;;) {
+ if ( fgets( buf, CKBUFSIZ, fp ) == NULL ) {
+ dsgw_closecookiedb( fp );
+#ifdef DSGW_DEBUG
+ dsgw_log( "dsgw_ckdn2passwd: cookie <%s> not found in db\n",
+ rndstr );
+#endif
+ return DSGW_CKDB_KEY_NOT_PRESENT;
+ }
+
+#ifdef DSGW_DEBUG
+ dsgw_log( "dsgw_ckdn2passwd: retrieved buf from db: <%s>\n", buf );
+#endif
+ if ( buf[ strlen( buf ) - 1 ] == '\n' ) {
+ buf[ strlen( buf ) - 1 ] = '\0';
+ }
+
+ if ( strncmp( buf, rndstr, strlen( rndstr ))) {
+ continue;
+ }
+
+ if (( p = strchr( buf, ':' )) == NULL ) {
+ dsgw_closecookiedb( fp );
+#ifdef DSGW_DEBUG
+ dsgw_log( "dsgw_ckdn2passwd: colon 1 missing\n" );
+#endif
+ return DSGW_CKDB_DBERROR;
+ }
+ *p++ = '\0';
+ lifetimestr = p;
+ if (( p = strchr( lifetimestr, ':' )) == NULL ) {
+ dsgw_closecookiedb( fp );
+#ifdef DSGW_DEBUG
+ dsgw_log( "dsgw_ckdn2passwd: colon 2 missing\n" );
+#endif
+ return DSGW_CKDB_DBERROR;
+ }
+ *p++ = '\0';
+ pw = p;
+
+ if (( p = strchr( pw, ':' )) == NULL ) {
+ dsgw_closecookiedb( fp );
+#ifdef DSGW_DEBUG
+ dsgw_log( "dsgw_ckdn2passwd: colon 3 missing\n" );
+#endif
+ return DSGW_CKDB_DBERROR;
+ }
+ *p++ = '\0';
+ cdn = p;
+
+ if ( strcmp( dn, cdn )) {
+ dsgw_closecookiedb( fp );
+#ifdef DSGW_DEBUG
+ dsgw_log( "dsgw_ckdn2passwd: dn <%s> != cdn <%s>\n", dn, cdn );
+#endif
+ return DSGW_CKDB_KEY_NOT_PRESENT;
+ }
+
+ /* expired? */
+ time( &now );
+ if ( gc->gc_mode == DSGW_MODE_DOMODIFY ) {
+ if ( now > ( atoi( lifetimestr ) + DSGW_MODIFY_GRACEPERIOD )) {
+ expired = 1;
+ } else {
+#ifdef DSGW_DEBUG
+ dsgw_log( "dsgw_ckdn2passwd: cookie expired (%ld > %ld) but within domodify grace period\n", now, atoi( lifetimestr ));
+#endif
+ }
+ } else if ( now > atoi( lifetimestr )) {
+ expired = 1;
+ }
+
+ if ( expired != 0 ) {
+ dsgw_closecookiedb( fp );
+#ifdef DSGW_DEBUG
+ dsgw_log( "dsgw_ckdn2passwd: expired (%ld > %ld)\n", now, atoi( lifetimestr ));
+#endif
+ return DSGW_CKDB_EXPIRED;
+ }
+
+ *ret_pw = dsgw_UnMungeString( pw );
+ dsgw_closecookiedb( fp );
+ return ( *ret_pw == NULL ) ? 1 : 0;
+ }
+}
+
+
+
+/*
+ * Store the given cookie and password into the database. The cookie
+ * is marked to expire at the time given by "expires". Returns 0 if
+ * successful, otherwise returns an error as given in dsgw.h.
+ * As a side effect, if the database has not been purged of expired
+ * entries in more than 10 minutes, the database is purged.
+ *
+ * Note: DNs are stored unescaped in the cookie database. Passwords
+ * are stored as "munged" values (encrypted using a hard-coded key and
+ * then converted to ASCII as described in RFC-1113) to make them a bit
+ * less obvious and to avoid problems which might arise from embedded ":"
+ * characters in the password (":" is the field separator in the database).
+ */
+int
+dsgw_storecookie( char *rndstr, char *dn, char *password, time_t lifetime )
+{
+ FILE *fp;
+ char *epw;
+ time_t now, lp;
+
+ if (( fp = dsgw_opencookiedb()) == NULL ) {
+ return DSGW_CKDB_CANTOPEN;
+ }
+
+ /* append record */
+ if ( fseek( fp, 0L, SEEK_END ) < 0 ) {
+ return DSGW_CKDB_CANTAPPEND;
+ }
+ if (( epw = dsgw_MungeString( password )) == NULL ) {
+ return DSGW_CKDB_CANTAPPEND; /* error msg is close enough */
+ }
+
+ time( &now );
+ if ( fprintf( fp, "%s:%lu:%s:%s\n", rndstr, lifetime + now, epw, dn )
+ < 0 ) {
+ free( epw );
+ return DSGW_CKDB_CANTAPPEND;
+ }
+
+ fflush( fp );
+
+ dsgw_closecookiedb( fp );
+ fp = dsgw_opencookiedb();
+ lp = dsgw_getlastpurged( fp );
+ dsgw_closecookiedb( fp );
+
+ if ( lp + DSGW_CKPURGEINTERVAL < now ) {
+ dsgw_purgedatabase( NULL );
+ }
+#ifdef DSGW_DEBUG
+ dsgw_log( "dsgw_storecookie: stored %s:%lu:%s:%s\n", rndstr, lifetime + now, epw, dn );
+#endif
+ free( epw );
+ return 0;
+}
+
+
+/*
+ * Remove a cookie from the database.
+ * Format of cookie argument is "nsdsgwauth=cookie-string:escaped-dn"
+ */
+int
+dsgw_delcookie( char *cookie )
+{
+ FILE *fp;
+ char *rndstr, *dn, *dnp, *dbdn, *p;
+ char buf[ CKBUFSIZ ];
+ int rc;
+ long buflen;
+
+ /* Parse the given cookie - find the random string */
+ if (( rndstr = strchr( cookie, '=' )) == NULL ) {
+ /* malformed cookie */
+ return -1;
+ } else {
+ /* Get the escaped DN */
+ rndstr++;
+ if (( dn = strchr( rndstr, ':' )) == NULL ) {
+ /* malformed cookie */
+ return -1;
+ } else {
+ *dn++ = '\0';
+ dsgw_form_unescape( dn );
+ }
+ }
+
+ /*
+ * Open the cookie database, find the rndstr, make sure the DNs
+ * match, and delete that entry if found.
+ */
+ if (( fp = dsgw_opencookiedb()) == NULL ) {
+ return -1;
+ }
+ fgets( buf, CKBUFSIZ, fp );
+ if ( strncmp( buf, "lastpurge:", 10 )) {
+ dsgw_closecookiedb( fp );
+ return -1;
+ }
+ rc = DSGW_CKDB_KEY_NOT_PRESENT;
+ for (;;) {
+ if ( fgets( buf, CKBUFSIZ, fp ) == NULL ) {
+ break;
+ }
+ if ( strncmp( buf, rndstr, CKLEN )) {
+ continue;
+ }
+ buflen = strlen( buf );
+ /* Found the random string - check DN */
+ if (( dbdn = strrchr( buf, ':' )) == NULL ) {
+ continue;
+ } else {
+ dbdn++;
+ if ( dbdn[ strlen( dbdn) - 1 ] == '\n' ) {
+ dbdn[ strlen( dbdn) - 1 ] = '\0';
+ }
+ if ( strcmp( dbdn, dn )) {
+ continue;
+ } else {
+ /* Found it. Set the expiration time to zero and obliterate
+ * the password.
+ */
+ p = strchr( buf, ':' );
+ for ( p++; *p != ':'; p++ ) {
+ *p = '0'; /* yes, '0', not '\0' */
+ }
+ dnp = strrchr( buf, ':' );
+ for ( p++; p < dnp; p++ ) {
+ *p = 'x';
+ }
+ p++;
+ fseek( fp, -buflen, SEEK_CUR );
+ fputs( buf, fp );
+ fputs( "\n", fp );
+ fflush( fp );
+ rc = 0;
+ }
+ }
+ }
+
+ dsgw_closecookiedb( fp );
+
+ if ( rc == 0 ) {
+ dsgw_purgedatabase( dn );
+ }
+
+ return rc;
+}
+
+
+
+
+
+
+/*
+ * Retrieve the time of the last database purge. Returns zero on error.
+ * The caller must open and lock the cookie database before calling this
+ * routine. The file pointer's position in the file is preserved.
+ */
+time_t
+dsgw_getlastpurged( FILE *fp )
+{
+ char buf[ CKBUFSIZ ];
+ char *p;
+ size_t pos;
+ time_t ret;
+
+ if ( fp == NULL ) {
+ return (time_t) 0L;
+ }
+
+ pos = ftell( fp );
+ fseek( fp, 0L, SEEK_SET );
+
+ fgets( buf, CKBUFSIZ, fp );
+ if ( strncmp( buf, "lastpurge:", 10 )) {
+ ret = (time_t) 0L;
+ } else {
+ p = buf + 10;
+ if ( *p != '\0' ) {
+ ret = (time_t) atol( p );
+ } else {
+ ret = (time_t) 0L;
+ }
+ }
+ fseek( fp, pos, SEEK_SET );
+ return ret;
+}
+
+
+/*
+ * Purge the database of any expired entries. Returns the number of
+ * entries purged, or -1 if an error occurred. If "dn" is non-NULL,
+ * then this routine will also remove any entries where the DN matches
+ * "dn".
+ */
+#define DSGW_CK_DEBUG 1
+int
+dsgw_purgedatabase( char *dn )
+{
+ FILE *fp, *ofp;
+ time_t now;
+ char buf[ CKBUFSIZ ];
+ char *exp;
+ char expbuf[ 32 ];
+ char *nbuf;
+ int purged = 0;
+#ifdef _WIN32
+ int fh;
+#endif
+ size_t osize; /* original size of file */
+ size_t csize; /* current size of file */
+ char cdb[MAXPATHLEN]; /*DSGW_COOKIEDB_FNAME + context*/
+
+ sprintf(cdb, "%s.%s", DSGW_COOKIEDB_FNAME, context);
+
+ if (( fp = dsgw_opencookiedb()) == NULL ) {
+ return -1;
+ }
+
+ fseek( fp, 0L, SEEK_END );
+ osize = ftell( fp );
+ fseek( fp, 0L, SEEK_SET );
+
+ if (( ofp = fopen( cdb, "r+" )) == NULL ) {
+ dsgw_closecookiedb( fp );
+ return -1;
+ }
+
+ /* re-write the last purge time */
+ time( &now );
+ fprintf( ofp, "lastpurge: %-20lu\n", now );
+
+ for (;;) {
+ char *p;
+ char *dbdn;
+ int nukeit;
+
+ nukeit = 0;
+
+ if ( fgets( buf, CKBUFSIZ, fp ) == NULL ) {
+ break;
+ }
+ if ( strncmp( buf, "lastpurge:", 10 ) == 0 ) {
+ continue;
+ }
+ if (( p = strchr( buf, ':' )) == NULL ) {
+ fclose( ofp );
+ dsgw_closecookiedb( fp );
+ return -1;
+ }
+ exp = ++p;
+ if (( p = strchr( exp, ':' )) == NULL ) {
+ fclose( ofp );
+ dsgw_closecookiedb( fp );
+ return -1;
+ }
+ strncpy( expbuf, exp, p - exp );
+ expbuf[ p - exp ] = '\0';
+ time( &now );
+
+ /* Get the entry's DN */
+ dbdn = strrchr( buf, ':' );
+ dbdn++;
+ dbdn = strdup( dbdn );
+ if ( dbdn[ strlen( dbdn) - 1 ] == '\n' ) {
+ dbdn[ strlen( dbdn) - 1 ] = '\0';
+ }
+
+ /* Should we delete? */
+ if ( dn != NULL ) {
+ if (( dbdn != NULL ) && !strcmp( dn, dbdn )) {
+ /* Entry's DN is the same as the "dn" parameter - delete */
+ nukeit = 1;
+ }
+ }
+
+ free( dbdn );
+ if ( !nukeit && ( now > atol( expbuf ))) {
+ /* expired */
+ nukeit = 1;
+ }
+
+ if ( !nukeit ) {
+ /* Entry should stay */
+ fputs( buf, ofp );
+ } else {
+ /* Entry should be purged */
+ purged++;
+ }
+ }
+
+ /*
+ * Overwrite the rest of the file so we don't leave passwords
+ * laying around.
+ */
+ csize = ftell( ofp );
+ nbuf = dsgw_ch_malloc( osize - csize + 2 );
+ memset( nbuf, 'x', osize - csize + 1 );
+ nbuf[ osize - csize + 1 ] = '\0';
+ fputs( nbuf, ofp );
+ free( nbuf );
+#ifdef _WIN32
+ dsgw_closecookiedb( fp );
+ fflush( ofp );
+ fclose( ofp );
+ fh = open( cdb, _O_RDWR | _O_TEXT );
+ chsize( fh, csize );
+ close( fh );
+#else /* _WIN32 */
+ fclose( ofp );
+ ftruncate( fileno( fp ), csize );
+ dsgw_closecookiedb( fp );
+#endif /* _WIN32 */
+ return purged;
+}
+
+
+
+/*
+ * for debugging - traverse and print the db
+ */
+void
+dsgw_traverse_db()
+{
+ FILE *fp;
+ char *exp;
+ int total, expired;
+ time_t now;
+ char buf[ CKBUFSIZ ];
+ char expbuf[ 32 ];
+
+ total = expired = 0;
+
+ if (( fp = dsgw_opencookiedb()) == NULL ) {
+ fprintf( stderr, "can't open db\n" );
+ return;
+ }
+
+ if ( fgets( buf, CKBUFSIZ, fp ) == NULL ) {
+ dsgw_closecookiedb( fp );
+ printf( "Cookie database is empty (no lastpurge line)\n" );
+ return;
+ }
+ puts( buf );
+
+ for (;;) {
+ char *p;
+ if ( fgets( buf, CKBUFSIZ, fp ) == NULL ) {
+ dsgw_closecookiedb( fp );
+ printf( "%d entries, %d expired\n", total, expired );
+ return;
+ }
+ if (( p = strchr( buf, ':' )) == NULL ) {
+ dsgw_closecookiedb( fp );
+ return;
+ }
+ exp = ++p;
+ if (( p = strchr( exp, ':' )) == NULL ) {
+ dsgw_closecookiedb( fp );
+ return;
+ }
+ printf( "%s", buf );
+ strncpy( expbuf, exp, p - exp + 1 );
+ expbuf[ p - exp + 1 ] = '\0';
+ time( &now );
+ total++;
+ if ( now > atol( expbuf )) {
+ /* not yet expired */
+ printf( " (expired)\n" );
+ expired++;
+ } else {
+ printf( "\n" );
+ }
+ }
+}
+
+
+
+/*
+ * Generate a complete authentication cookie header line and store
+ * the relevant parts iit in the database.
+ * Return a pointer to the cookie. This routine allocates memory, which
+ * the caller is responsible for freeing.
+ * On error, this routine returns NULL and sets err to point to an
+ * error code.
+ */
+char *
+dsgw_mkcookie( char *dn, char *password, time_t lifetime, int *err )
+{
+ char *r;
+ char *ckbuf;
+ char *edn;
+ int rc;
+
+ if ( dn == NULL ) {
+ *err = DSGW_CKDB_NODN;
+ return NULL;
+ }
+ edn = dsgw_strdup_escaped( dn );
+
+ if (( r = dsgw_mkrndstr()) == NULL ) {
+ *err = DSGW_CKDB_RNDSTRFAIL;
+ return NULL;
+ }
+ rc = dsgw_storecookie( r, dn, password, lifetime );
+ if ( rc != 0 ) {
+ free( r );
+ free( edn );
+ *err = rc;
+ return NULL;
+ }
+
+ ckbuf = dsgw_ch_malloc( strlen( DSGW_CKHDR ) + strlen( r ) +
+ strlen( edn ) + strlen( DSGW_AUTHCKNAME ) + 2 + 20 );
+ ckbuf[ 0 ] = '\0';
+ strcpy( ckbuf, DSGW_CKHDR );
+ strcat( ckbuf, DSGW_AUTHCKNAME );
+ strcat( ckbuf, "=" );
+ strcat( ckbuf, r );
+ strcat( ckbuf, ":" );
+ strcat( ckbuf, edn );
+ strcat( ckbuf, "; path=/" );
+
+ free( r );
+ free( edn );
+ return ckbuf;
+}
+
+
+
+#if 0
+/*
+ * Given a time_t, return a GMTString representation of that time.
+ */
+char *
+dsgw_t2gmts( time_t cktime )
+{
+ time_t tnl;
+ struct tm *pt;
+#define TBUFSIZE 40
+ char tbuf[ TBUFSIZE ];
+
+ tnl = time( NULL );
+ pt = gmtime( &tnl );
+ (void)strftime( tbuf, (size_t)TBUFSIZE, "%A, %d-%b-%y %T GMT", pt);
+ return( dsgw_ch_strdup( tbuf ));
+}
+#endif
+
+
+/*
+ * Password obfuscation, etc.
+ * There is no real security here -- we just encrypt using a hard-coded key.
+ * The original functions these are based on are called SECMOZ_MungeString()
+ * and SECMOZ_UnMungeString(). They can be found in ns/lib/libsec/secmoz.c
+ * (they don't get built as part of the server builds). The only change I
+ * made was to swap a few of the bytes in the secmoz_tmmdi array and add one
+ * to all of them. -- Mark Smith <mcs@netscape.com>
+ */
+
+static unsigned char dsgw_tmmdi[] = { /* tmmdi == They Made Me Do It */
+ 0x87, /* repka, paquin */
+ 0x9d, /* freier, elgamal */
+ 0xdf, /* jonm, bobj */
+ 0xef, /* fur, sharoni */
+ 0xd1, /* jsw, karlton */
+ 0xec, /* ari, sk */
+ 0x3f, /* terry, atotic */
+ 0xc7 /* jevering, kent */
+};
+
+static char *
+dsgw_MungeString(const char *unmunged_string)
+{
+ return(dsgw_encDec(CKA_ENCRYPT, unmunged_string));
+}
+static char *
+dsgw_UnMungeString(const char *munged_string)
+{
+ return(dsgw_encDec(CKA_DECRYPT, munged_string));
+}
+
+/*
+ * key import and encryption (using RC4)
+ */
+static char *
+dsgw_encDec(CK_ATTRIBUTE_TYPE operation, const char *msg)
+{
+ CK_MECHANISM_TYPE type = CKM_RC4;
+ PK11SlotInfo *slot = 0;
+ PK11SymKey *key = 0;
+ SECItem *params = 0;
+ PK11Context *context = 0;
+ unsigned char *output;
+ unsigned char *input;
+ char *edStr;
+ int outLen;
+ int len;
+ SECStatus s;
+ SECItem keyItem = { siBuffer, dsgw_tmmdi, sizeof dsgw_tmmdi };
+ int noGood = 0;
+ unsigned int inlen;
+ FILE *pptr;
+ int i;
+
+ if (msg == NULL) {
+ return NULL;
+ }
+
+ if (*msg == '\0') {
+ return PL_strdup(msg);
+ }
+
+ if (operation == CKA_DECRYPT) {
+ input = ATOB_AsciiToData(msg, &inlen);
+ if (msg == NULL)
+ return NULL;
+ } else {
+ inlen = PL_strlen(msg);
+ input = (unsigned char *) msg;
+ }
+
+ output = (unsigned char *) malloc(inlen + 65);
+ if (output == NULL) {
+ return NULL;
+ }
+
+ /* Initialization */
+ /*NSS_NoDB_Init(".");*/
+ dsgw_initNSS();
+
+ /*
+ * Choose a "slot" to use. Slots store keys (either
+ * temporarily or permanently) and perform
+ * cryptogrphic operations.
+ *
+ * Use the built-in key slot. Another way to choose
+ * a slot is using PK11_GetBestSlot(), which chooses
+ * based on the mechanism.
+ */
+ slot = PK11_GetInternalKeySlot();
+ if (!slot)
+ {
+ noGood = 1;
+ goto dsgw_encDec_done;
+ }
+
+ /*
+ * Get the encryption key. Params may be passed in here,
+ * but most symmetric key generation requires only the key
+ * length.
+ *
+ * Warning: the key length is in bytes
+ *
+ * The key can also be imported (not recommended). See importKey()
+ * below for example code.
+ */
+ /* This code generates a random key
+ key = PK11_KeyGen(slot, type, 0, 128/8, 0);
+ if (!key)
+ {
+ goto dsgw_encDec_done;
+ }*/
+ /* Here we are using a static key. This sucks, but we don't really
+ * have much of a choice.*/
+ key = PK11_ImportSymKey(slot, CKM_RC4, PK11_OriginGenerated, operation, &keyItem, 0);
+
+ /*
+ * Some encryption algorithms require parameters. NSS provides
+ * a generic way to create parameters for any algorithm.
+ */
+ params = PK11_GenerateNewParam(type, key);
+ if (!params)
+ {
+ noGood = 1;
+ goto dsgw_encDec_done;
+ }
+
+ /*if (params->data) printBuffer(params->data, params->len);*/
+
+ /*
+ * Cryptographic operations are performed using a "context"
+ * Create one for doing encryption using the key and parameters
+ * generated above.
+ */
+ context = PK11_CreateContextBySymKey(type, operation, key, params);
+ if (!context)
+ {
+ noGood = 1;
+ goto dsgw_encDec_done;
+ }
+
+ /*
+ * Encrypt the data. In general, the input data should be in multiples
+ * of the cipher's block size, and the output size will match the input
+ * size. However, this will not be true for mechanisms that provide
+ * padding.
+ */
+ s = PK11_CipherOp(context, output, &outLen, inlen + 64, input, (int) inlen);
+ if (s != SECSuccess)
+ {
+ noGood = 1;
+ goto dsgw_encDec_done;
+ }
+
+ /*printBuffer(output, outLen);*/
+
+ /*
+ * When a mechanism that provides padding is used, there may be additional
+ * data available after the last input data is processed.
+ *
+ * NOTE: The type of the length output here is different than in PK11_CipherOp
+ */
+ s = PK11_DigestFinal(context, &output[outLen], &len, sizeof output - outLen);
+ if (s != SECSuccess)
+ {
+ noGood = 1;
+ goto dsgw_encDec_done;
+ }
+
+ /*if (len != 0) printBuffer(&output[outLen], len);*/
+
+ outLen += len;
+
+ /*
+ * Terminate the cryptographic operation. Destroying the
+ * context also performs this function.
+ */
+ PK11_Finalize(context);
+
+ /*
+ * Delete the encryption context block, this releases the reference to the key
+ * and frees the context's copy of the parameters, etc.
+ *
+ * The second argument should always be PR_TRUE to free the context structure
+ * itself, in addition to the contents.
+ */
+ PK11_DestroyContext(context, PR_TRUE);
+ context = 0;
+
+dsgw_encDec_done:
+ if (context) PK11_DestroyContext(context, PR_TRUE); /* freeit ?? */
+ if (params) SECITEM_ZfreeItem(params, PR_TRUE);
+ if (key) PK11_FreeSymKey(key);
+ if (slot) PK11_FreeSlot(slot);
+
+ if (noGood == 1) {
+ return(NULL);
+ }
+
+ if (operation == CKA_DECRYPT) {
+ edStr = (char *) output;
+ edStr[outLen] = '\0';
+ } else {
+ edStr = BTOA_DataToAscii(output, outLen);
+ free(output);
+ }
+
+ return(edStr);
+}
+
+
+void
+dsgw_initNSS(void)
+{
+ if (dsgw_NSSInitializedAlready == 1) {
+ return;
+ }
+
+ if (gc->gc_ldapssl && gc->gc_securitypath != NULL ) {
+ NSS_Init(gc->gc_securitypath);
+ } else {
+ NSS_NoDB_Init(NULL);
+ }
+ dsgw_NSSInitializedAlready = 1;
+}
generated by cgit (git 2.34.1) at 2024-12-26 18:33:57 +0000