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Rework passwd routines to allow callers to determine which

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schemes are supported.  This should facilate server rootDSE
advertisement of supported schemes, etc..
This commit is contained in:
Kurt Zeilenga 1999-09-25 22:13:25 +00:00
parent 6e6eb52591
commit 3c00fd6d23
2 changed files with 45 additions and 20 deletions
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5
include/lutil.h
View File

@ -50,6 +50,11 @@ lutil_passwd LDAP_P((
const char *passwd,
const char **methods ));
extern const char* lutil_passwd_schemes[];
LDAP_F( int )
lutil_passwd_scheme LDAP_P((char *scheme));
/* utils.c */
LDAP_F( char* )
lutil_progname LDAP_P((

60
libraries/liblutil/passwd.c
View File

@ -31,18 +31,18 @@
# include <pwd.h>
#endif
static int supported_hash(
const char* method,
const char** methods )
static int is_allowed_scheme(
const char* scheme,
const char** schemes )
{
int i;
if(methods == NULL) {
if(schemes == NULL) {
return 1;
}
for(i=0; methods[i] != NULL; i++) {
if(strcasecmp(method, methods[i]) == 0) {
for(i=0; schemes[i] != NULL; i++) {
if(strcasecmp(scheme, schemes[i]) == 0) {
return 1;
}
}
@ -50,20 +50,40 @@ static int supported_hash(
return 0;
}
static const char *passwd_hash(
const char *lutil_passwd_schemes[] = {
#ifdef SLAPD_CRYPT
"{CRYPT}",
#endif
"{MD5}", "{SMD5}",
"{SHA}", "{SSHA}",
# if defined( HAVE_GETSPNAM ) \
|| ( defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD ) )
"{UNIX}",
#endif
#ifdef SLAPD_CLEARTEXT
"{CLEARTEXT}", /* psuedo scheme */
#endif
NULL,
};
int lutil_passwd_scheme( char *scheme ) {
return is_allowed_scheme( scheme, lutil_passwd_schemes );
}
static const char *passwd_scheme(
const char* passwd,
const char* method,
const char** methods )
const char* scheme,
const char** schemes )
{
int len;
if( !supported_hash( method, methods ) ) {
if( !is_allowed_scheme( scheme, schemes ) ) {
return NULL;
}
len = strlen(method);
len = strlen(scheme);
if( strncasecmp( passwd, method, len ) == 0 ) {
if( strncasecmp( passwd, scheme, len ) == 0 ) {
return &passwd[len];
}
@ -77,7 +97,7 @@ int
lutil_passwd(
const char *cred,
const char *passwd,
const char **methods)
const char **schemes)
{
const char *p;
@ -85,7 +105,7 @@ lutil_passwd(
return -1;
}
if ((p = passwd_hash( passwd, "{MD5}", methods )) != NULL ) {
if ((p = passwd_scheme( passwd, "{MD5}", schemes )) != NULL ) {
lutil_MD5_CTX MD5context;
unsigned char MD5digest[16];
char base64digest[25]; /* ceiling(sizeof(input)/3) * 4 + 1 */
@ -103,7 +123,7 @@ lutil_passwd(
return( strcmp(p, base64digest) );
} else if ((p = passwd_hash( passwd, "{SHA}", methods )) != NULL ) {
} else if ((p = passwd_scheme( passwd, "{SHA}", schemes )) != NULL ) {
lutil_SHA1_CTX SHA1context;
unsigned char SHA1digest[20];
char base64digest[29]; /* ceiling(sizeof(input)/3) * 4 + 1 */
@ -121,7 +141,7 @@ lutil_passwd(
return( strcmp(p, base64digest) );
} else if ((p = passwd_hash( passwd, "{SSHA}", methods )) != NULL ) {
} else if ((p = passwd_scheme( passwd, "{SSHA}", schemes )) != NULL ) {
lutil_SHA1_CTX SHA1context;
unsigned char SHA1digest[20];
int pw_len = strlen(p);
@ -150,7 +170,7 @@ lutil_passwd(
free(orig_pass);
return(rc);
} else if ((p = passwd_hash( passwd, "{SMD5}", methods )) != NULL ) {
} else if ((p = passwd_scheme( passwd, "{SMD5}", schemes )) != NULL ) {
lutil_MD5_CTX MD5context;
unsigned char MD5digest[16];
int pw_len = strlen(p);
@ -180,12 +200,12 @@ lutil_passwd(
return ( rc );
#ifdef SLAPD_CRYPT
} else if ((p = passwd_hash( passwd, "{CRYPT}", methods )) != NULL ) {
} else if ((p = passwd_scheme( passwd, "{CRYPT}", schemes )) != NULL ) {
return( strcmp(p, crypt(cred, p)) );
# if defined( HAVE_GETSPNAM ) \
|| ( defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD ) )
} else if ((p = passwd_hash( passwd, "{UNIX}", methods )) != NULL ) {
} else if ((p = passwd_scheme( passwd, "{UNIX}", schemes )) != NULL ) {
# ifdef HAVE_GETSPNAM
struct spwd *spwd = getspnam(p);
@ -209,7 +229,7 @@ lutil_passwd(
}
#ifdef SLAPD_CLEARTEXT
return supported_hash("{CLEARTEXT}", methods ) &&
return is_allowed_scheme("{CLEARTEXT}", schemes ) &&
strcmp(passwd, cred) != 0;
#else
return( 1 );