mirror/openldap
2
0
Fork 0
mirror of https://git.openldap.org/openldap/openldap.git synced 2024-12-21 03:10:25 +08:00
Code Issues Packages Projects Releases Wiki Activity
430077e2ed
openldap/servers/slapd/sasl.c

1686 lines
40 KiB
C
Raw Blame History

/* $OpenLDAP$ */
/*
* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/stdlib.h>
#include <ac/string.h>
#include <lber.h>
#include <ldap_log.h>
#include "slap.h"
#include <limits.h>
#ifdef HAVE_CYRUS_SASL
# ifdef HAVE_SASL_SASL_H
# include <sasl/sasl.h>
# else
# include <sasl.h>
# endif
# if SASL_VERSION_MAJOR >= 2
# include <sasl/saslplug.h>
# define SASL_CONST const
# else
# define SASL_CONST
# endif
static sasl_security_properties_t sasl_secprops;
#endif /* HAVE_CYRUS_SASL */
#include "ldap_pvt.h"
#include "lber_pvt.h"
#include <lutil.h>
int slap_sasl_config( int cargc, char **cargv, char *line,
const char *fname, int lineno )
{
/* set SASL proxy authorization policy */
if ( strcasecmp( cargv[0], "sasl-authz-policy" ) == 0 ) {
if ( cargc != 2 ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONFIG, CRIT,
"%s: line %d: missing policy in"
" \"sasl-authz-policy <policy>\" line\n",
fname, lineno, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"%s: line %d: missing policy in"
" \"sasl-authz-policy <policy>\" line\n",
fname, lineno, 0 );
#endif
return( 1 );
}
if ( slap_sasl_setpolicy( cargv[1] ) ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONFIG, CRIT,
"%s: line %d: unable "
"to parse value \"%s\" "
"in \"sasl-authz-policy "
"<policy>\" line.\n",
fname, lineno, cargv[1] );
#else
Debug( LDAP_DEBUG_ANY,
"%s: line %d: unable "
"to parse value \"%s\" "
"in \"sasl-authz-policy "
"<policy>\" line\n",
fname, lineno, cargv[1] );
#endif
return( 1 );
}
} else if ( !strcasecmp( cargv[0], "sasl-regexp" )
|| !strcasecmp( cargv[0], "saslregexp" ) )
{
int rc;
if ( cargc != 3 ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONFIG, CRIT,
"%s: line %d: need 2 args in "
"\"saslregexp <match> <replace>\"\n",
fname, lineno, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"%s: line %d: need 2 args in "
"\"saslregexp <match> <replace>\"\n",
fname, lineno, 0 );
#endif
return( 1 );
}
rc = slap_sasl_regexp_config( cargv[1], cargv[2] );
if ( rc ) {
return rc;
}
#ifdef HAVE_CYRUS_SASL
/* set SASL host */
} else if ( strcasecmp( cargv[0], "sasl-host" ) == 0 ) {
if ( cargc < 2 ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONFIG, CRIT,
"%s: line %d: missing host in \"sasl-host <host>\" line\n",
fname, lineno, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"%s: line %d: missing host in \"sasl-host <host>\" line\n",
fname, lineno, 0 );
#endif
return( 1 );
}
if ( global_host != NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONFIG, CRIT,
"%s: line %d: already set sasl-host!\n",
fname, lineno, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"%s: line %d: already set sasl-host!\n",
fname, lineno, 0 );
#endif
return 1;
} else {
global_host = ch_strdup( cargv[1] );
}
/* set SASL realm */
} else if ( strcasecmp( cargv[0], "sasl-realm" ) == 0 ) {
if ( cargc < 2 ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONFIG, CRIT, "%s: line %d: "
"missing realm in \"sasl-realm <realm>\" line.\n",
fname, lineno, 0 );
#else
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"missing realm in \"sasl-realm <realm>\" line.\n",
fname, lineno, 0 );
#endif
return( 1 );
}
if ( global_realm != NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONFIG, CRIT,
"%s: line %d: already set sasl-realm!\n",
fname, lineno, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"%s: line %d: already set sasl-realm!\n",
fname, lineno, 0 );
#endif
return 1;
} else {
global_realm = ch_strdup( cargv[1] );
}
/* SASL security properties */
} else if ( strcasecmp( cargv[0], "sasl-secprops" ) == 0 ) {
char *txt;
if ( cargc < 2 ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONFIG, CRIT, "%s: line %d: "
"missing flags in \"sasl-secprops <properties>\" line\n",
fname, lineno, 0 );
#else
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"missing flags in \"sasl-secprops <properties>\" line\n",
fname, lineno, 0 );
#endif
return 1;
}
txt = slap_sasl_secprops( cargv[1] );
if ( txt != NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONFIG, CRIT,
"%s: line %d sasl-secprops: %s\n",
fname, lineno, txt );
#else
Debug( LDAP_DEBUG_ANY,
"%s: line %d: sasl-secprops: %s\n",
fname, lineno, txt );
#endif
return 1;
}
#endif /* HAVE_CYRUS_SASL */
}
return LDAP_SUCCESS;
}
#ifdef HAVE_CYRUS_SASL
int
slap_sasl_log(
void *context,
int priority,
const char *message)
{
Connection *conn = context;
int level;
const char * label;
if ( message == NULL ) {
return SASL_BADPARAM;
}
switch (priority) {
#if SASL_VERSION_MAJOR >= 2
case SASL_LOG_NONE:
level = LDAP_DEBUG_NONE;
label = "None";
break;
case SASL_LOG_ERR:
level = LDAP_DEBUG_ANY;
label = "Error";
break;
case SASL_LOG_FAIL:
level = LDAP_DEBUG_ANY;
label = "Failure";
break;
case SASL_LOG_WARN:
level = LDAP_DEBUG_TRACE;
label = "Warning";
break;
case SASL_LOG_NOTE:
level = LDAP_DEBUG_TRACE;
label = "Notice";
break;
case SASL_LOG_DEBUG:
level = LDAP_DEBUG_TRACE;
label = "Debug";
break;
case SASL_LOG_TRACE:
level = LDAP_DEBUG_TRACE;
label = "Trace";
break;
case SASL_LOG_PASS:
level = LDAP_DEBUG_TRACE;
label = "Password Trace";
break;
#else
case SASL_LOG_ERR:
level = LDAP_DEBUG_ANY;
label = "Error";
break;
case SASL_LOG_WARNING:
level = LDAP_DEBUG_TRACE;
label = "Warning";
break;
case SASL_LOG_INFO:
level = LDAP_DEBUG_TRACE;
label = "Info";
break;
#endif
default:
return SASL_BADPARAM;
}
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"SASL [conn=%ld] %s: %s\n", conn ? conn->c_connid : -1, label, message);
#else
Debug( level, "SASL [conn=%ld] %s: %s\n",
conn ? conn->c_connid: -1,
label, message );
#endif
return SASL_OK;
}
#if SASL_VERSION_MAJOR >= 2
static const char *slap_propnames[] = {
"*slapConn", "*authcDN", "*authzDN", NULL };
static Filter *generic_filter;
#define PROP_CONN 0
#define PROP_AUTHC 1
#define PROP_AUTHZ 2
typedef struct lookup_info {
int last;
int flags;
const struct propval *list;
sasl_server_params_t *sparams;
} lookup_info;
static slap_response sasl_ap_lookup, sasl_cb_checkpass;
static int
sasl_ap_lookup( Operation *op, SlapReply *rs )
{
BerVarray bv;
AttributeDescription *ad;
Attribute *a;
const char *text;
int rc, i;
slap_callback *tmp = op->o_callback;
lookup_info *sl = tmp->sc_private;
if (rs->sr_type != REP_SEARCH) return 0;
for( i = 0; i < sl->last; i++ ) {
const char *name = sl->list[i].name;
if ( name[0] == '*' ) {
if ( sl->flags & SASL_AUXPROP_AUTHZID ) continue;
name++;
} else if ( !(sl->flags & SASL_AUXPROP_AUTHZID ) )
continue;
if ( sl->list[i].values ) {
if ( !(sl->flags & SASL_AUXPROP_OVERRIDE) ) continue;
}
ad = NULL;
rc = slap_str2ad( name, &ad, &text );
if ( rc != LDAP_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, DETAIL1,
"slap_auxprop: str2ad(%s): %s\n", name, text, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"slap_auxprop: str2ad(%s): %s\n", name, text, 0 );
#endif
continue;
}
a = attr_find( rs->sr_entry->e_attrs, ad );
if ( !a ) continue;
if ( ! access_allowed( op, rs->sr_entry, ad, NULL, ACL_AUTH, NULL ) ) {
continue;
}
if ( sl->list[i].values && ( sl->flags & SASL_AUXPROP_OVERRIDE ) ) {
sl->sparams->utils->prop_erase( sl->sparams->propctx,
sl->list[i].name );
}
for ( bv = a->a_vals; bv->bv_val; bv++ ) {
sl->sparams->utils->prop_set( sl->sparams->propctx,
sl->list[i].name, bv->bv_val, bv->bv_len );
}
}
return LDAP_SUCCESS;
}
static void
slap_auxprop_lookup(
void *glob_context,
sasl_server_params_t *sparams,
unsigned flags,
const char *user,
unsigned ulen)
{
Operation op = {0};
int rc, i, doit=0;
Connection *conn = NULL;
lookup_info sl;
sl.list = sparams->utils->prop_get( sparams->propctx );
sl.sparams = sparams;
sl.flags = flags;
/* Find our DN and conn first */
for( i = 0, sl.last = 0; sl.list[i].name; i++ ) {
if ( sl.list[i].name[0] == '*' ) {
if ( !strcmp( sl.list[i].name, slap_propnames[PROP_CONN] ) ) {
if ( sl.list[i].values && sl.list[i].values[0] )
AC_MEMCPY( &conn, sl.list[i].values[0], sizeof( conn ) );
if ( !sl.last ) sl.last = i;
}
if ( (flags & SASL_AUXPROP_AUTHZID) &&
!strcmp( sl.list[i].name, slap_propnames[PROP_AUTHZ] ) ) {
if ( sl.list[i].values && sl.list[i].values[0] )
AC_MEMCPY( &op.o_req_ndn, sl.list[i].values[0], sizeof( struct berval ) );
if ( !sl.last ) sl.last = i;
break;
}
if ( !strcmp( sl.list[i].name, slap_propnames[PROP_AUTHC] ) ) {
if ( !sl.last ) sl.last = i;
if ( sl.list[i].values && sl.list[i].values[0] ) {
AC_MEMCPY( &op.o_req_ndn, sl.list[i].values[0], sizeof( struct berval ) );
if ( !(flags & SASL_AUXPROP_AUTHZID) )
break;
}
}
}
}
/* Now see what else needs to be fetched */
for( i = 0; i < sl.last; i++ ) {
const char *name = sl.list[i].name;
if ( name[0] == '*' ) {
if ( flags & SASL_AUXPROP_AUTHZID ) continue;
name++;
} else if ( !(flags & SASL_AUXPROP_AUTHZID ) )
continue;
if ( sl.list[i].values ) {
if ( !(flags & SASL_AUXPROP_OVERRIDE) ) continue;
}
doit = 1;
}
if (doit) {
slap_callback cb = { sasl_ap_lookup };
cb.sc_private = &sl;
op.o_bd = select_backend( &op.o_req_ndn, 0, 1 );
if ( op.o_bd && op.o_bd->be_search ) {
SlapReply rs = {REP_RESULT};
op.o_tag = LDAP_REQ_SEARCH;
op.o_protocol = LDAP_VERSION3;
op.o_ndn = conn->c_ndn;
op.o_callback = &cb;
op.o_time = slap_get_time();
op.o_do_not_cache = 1;
op.o_is_auth_check = 1;
op.o_threadctx = conn->c_sasl_bindop->o_threadctx;
op.o_conn = conn;
op.o_connid = conn->c_connid;
op.oq_search.rs_scope = LDAP_SCOPE_BASE;
op.oq_search.rs_deref = LDAP_DEREF_NEVER;
op.oq_search.rs_slimit = 1;
op.oq_search.rs_filter = generic_filter;
op.o_bd->be_search( &op, &rs );
}
}
}
static sasl_auxprop_plug_t slap_auxprop_plugin = {
0, /* Features */
0, /* spare */
NULL, /* glob_context */
NULL, /* auxprop_free */
slap_auxprop_lookup,
"slapd", /* name */
NULL /* spare */
};
static int
slap_auxprop_init(
const sasl_utils_t *utils,
int max_version,
int *out_version,
sasl_auxprop_plug_t **plug,
const char *plugname)
{
if ( !out_version | !plug ) return SASL_BADPARAM;
if ( max_version < SASL_AUXPROP_PLUG_VERSION ) return SASL_BADVERS;
*out_version = SASL_AUXPROP_PLUG_VERSION;
*plug = &slap_auxprop_plugin;
return SASL_OK;
}
typedef struct checkpass_info {
int rc;
struct berval cred;
} checkpass_info;
static int
sasl_cb_checkpass( Operation *op, SlapReply *rs )
{
slap_callback *tmp = op->o_callback;
checkpass_info *ci = tmp->sc_private;
Attribute *a;
struct berval *bv;
if (rs->sr_type != REP_SEARCH) return 0;
ci->rc = SASL_NOVERIFY;
a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_userPassword );
if ( !a ) return 0;
if ( ! access_allowed( op, rs->sr_entry, slap_schema.si_ad_userPassword,
NULL, ACL_AUTH, NULL ) ) return 0;
for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
if ( !lutil_passwd( bv, &ci->cred, NULL ) ) {
ci->rc = SASL_OK;
break;
}
}
return 0;
}
static int
slap_sasl_checkpass(
sasl_conn_t *sconn,
void *context,
const char *username,
const char *pass,
unsigned passlen,
struct propctx *propctx)
{
Connection *conn = (Connection *)context;
Operation op = {0};
int rc;
checkpass_info ci;
ci.rc = SASL_NOUSER;
/* SASL will fallback to its own mechanisms if we don't
* find an answer here.
*/
rc = slap_sasl_getdn( conn, (char *)username, 0, NULL, &op.o_req_ndn,
SLAP_GETDN_AUTHCID );
if ( rc != LDAP_SUCCESS ) {
sasl_seterror( sconn, 0, ldap_err2string( rc ) );
return SASL_NOUSER;
}
if ( op.o_req_ndn.bv_len == 0 ) {
sasl_seterror( sconn, 0,
"No password is associated with the Root DSE" );
if ( op.o_req_ndn.bv_val != NULL ) {
ch_free( op.o_req_ndn.bv_val );
}
return SASL_NOUSER;
}
op.o_bd = select_backend( &op.o_req_ndn, 0, 1 );
if ( op.o_bd && op.o_bd->be_search ) {
slap_callback cb = { sasl_cb_checkpass };
SlapReply rs = {REP_RESULT};
ci.cred.bv_val = (char *)pass;
ci.cred.bv_len = passlen;
cb.sc_private = &ci;
op.o_tag = LDAP_REQ_SEARCH;
op.o_protocol = LDAP_VERSION3;
op.o_ndn = conn->c_ndn;
op.o_callback = &cb;
op.o_time = slap_get_time();
op.o_do_not_cache = 1;
op.o_is_auth_check = 1;
op.o_threadctx = conn->c_sasl_bindop->o_threadctx;
op.o_conn = conn;
op.o_connid = conn->c_connid;
op.oq_search.rs_scope = LDAP_SCOPE_BASE;
op.oq_search.rs_deref = LDAP_DEREF_NEVER;
op.oq_search.rs_slimit = 1;
op.oq_search.rs_filter = generic_filter;
op.o_bd->be_search( &op, &rs );
}
if ( ci.rc != SASL_OK ) {
sasl_seterror( sconn, 0,
ldap_err2string( LDAP_INVALID_CREDENTIALS ) );
}
ch_free( op.o_req_ndn.bv_val );
return ci.rc;
}
/* Convert a SASL authcid or authzid into a DN. Store the DN in an
* auxiliary property, so that we can refer to it in sasl_authorize
* without interfering with anything else. Also, the SASL username
* buffer is constrained to 256 characters, and our DNs could be
* much longer (totally arbitrary length)...
*/
static int
slap_sasl_canonicalize(
sasl_conn_t *sconn,
void *context,
const char *in,
unsigned inlen,
unsigned flags,
const char *user_realm,
char *out,
unsigned out_max,
unsigned *out_len)
{
Connection *conn = (Connection *)context;
struct propctx *props = sasl_auxprop_getctx( sconn );
struct propval auxvals[3];
struct berval dn;
int rc, which;
const char *names[2];
*out_len = 0;
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"slap_sasl_canonicalize: conn %d %s=\"%s\"\n",
conn ? conn->c_connid : -1,
(flags & SASL_CU_AUTHID) ? "authcid" : "authzid",
in ? in : "<empty>");
#else
Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: %s=\"%s\"\n",
conn ? conn->c_connid : -1,
(flags & SASL_CU_AUTHID) ? "authcid" : "authzid",
in ? in : "<empty>");
#endif
/* If name is too big, just truncate. We don't care, we're
* using DNs, not the usernames.
*/
if ( inlen > out_max )
inlen = out_max-1;
/* See if we need to add request, can only do it once */
prop_getnames( props, slap_propnames, auxvals );
if ( !auxvals[0].name )
prop_request( props, slap_propnames );
if ( flags & SASL_CU_AUTHID )
which = PROP_AUTHC;
else
which = PROP_AUTHZ;
/* Need to store the Connection for auxprop_lookup */
if ( !auxvals[PROP_CONN].values ) {
names[0] = slap_propnames[PROP_CONN];
names[1] = NULL;
prop_set( props, names[0], (char *)&conn, sizeof( conn ) );
}
/* Already been here? */
if ( auxvals[which].values )
goto done;
/* Normally we require an authzID to have a u: or dn: prefix.
* However, SASL frequently gives us an authzID that is just
* an exact copy of the authcID, without a prefix. We need to
* detect and allow this condition. If SASL calls canonicalize
* with SASL_CU_AUTHID|SASL_CU_AUTHZID this is a no-brainer.
* But if it's broken into two calls, we need to remember the
* authcID so that we can compare the authzID later. We store
* the authcID temporarily in conn->c_sasl_dn. We necessarily
* finish Canonicalizing before Authorizing, so there is no
* conflict with slap_sasl_authorize's use of this temp var.
*
* The SASL EXTERNAL mech is backwards from all the other mechs,
* it does authzID before the authcID. If we see that authzID
* has already been done, don't do anything special with authcID.
*/
if ( flags == SASL_CU_AUTHID && !auxvals[PROP_AUTHZ].values ) {
conn->c_sasl_dn.bv_val = (char *) in;
} else if ( flags == SASL_CU_AUTHZID && conn->c_sasl_dn.bv_val ) {
rc = strcmp( in, conn->c_sasl_dn.bv_val );
conn->c_sasl_dn.bv_val = NULL;
/* They were equal, no work needed */
if ( !rc ) goto done;
}
rc = slap_sasl_getdn( conn, (char *)in, inlen, (char *)user_realm, &dn,
(flags & SASL_CU_AUTHID) ? SLAP_GETDN_AUTHCID : SLAP_GETDN_AUTHZID );
if ( rc != LDAP_SUCCESS ) {
sasl_seterror( sconn, 0, ldap_err2string( rc ) );
return SASL_NOAUTHZ;
}
names[0] = slap_propnames[which];
names[1] = NULL;
prop_set( props, names[0], (char *)&dn, sizeof( dn ) );
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"slap_sasl_canonicalize: conn %d %s=\"%s\"\n",
conn ? conn->c_connid : -1, names[0]+1,
dn.bv_val ? dn.bv_val : "<EMPTY>" );
#else
Debug( LDAP_DEBUG_ARGS, "SASL Canonicalize [conn=%ld]: %s=\"%s\"\n",
conn ? conn->c_connid : -1, names[0]+1,
dn.bv_val ? dn.bv_val : "<EMPTY>" );
#endif
done:
AC_MEMCPY( out, in, inlen );
out[inlen] = '\0';
*out_len = inlen;
return SASL_OK;
}
static int
slap_sasl_authorize(
sasl_conn_t *sconn,
void *context,
char *requested_user,
unsigned rlen,
char *auth_identity,
unsigned alen,
const char *def_realm,
unsigned urlen,
struct propctx *props)
{
Connection *conn = (Connection *)context;
struct propval auxvals[3];
struct berval authcDN, authzDN;
int rc;
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"slap_sasl_authorize: conn %d authcid=\"%s\" authzid=\"%s\"\n",
conn ? conn->c_connid : -1, auth_identity, requested_user);
#else
Debug( LDAP_DEBUG_ARGS, "SASL Authorize [conn=%ld]: "
"authcid=\"%s\" authzid=\"%s\"\n",
conn ? conn->c_connid : -1, auth_identity, requested_user );
#endif
if ( conn->c_sasl_dn.bv_val ) {
ch_free( conn->c_sasl_dn.bv_val );
conn->c_sasl_dn.bv_val = NULL;
conn->c_sasl_dn.bv_len = 0;
}
/* Skip PROP_CONN */
prop_getnames( props, slap_propnames+1, auxvals );
AC_MEMCPY( &authcDN, auxvals[0].values[0], sizeof(authcDN) );
/* Nothing to do if no authzID was given */
if ( !auxvals[1].name || !auxvals[1].values ) {
conn->c_sasl_dn = authcDN;
goto ok;
}
AC_MEMCPY( &authzDN, auxvals[1].values[0], sizeof(authzDN) );
rc = slap_sasl_authorized( conn, &authcDN, &authzDN );
ch_free( authcDN.bv_val );
if ( rc != LDAP_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, INFO,
"slap_sasl_authorize: conn %ld authorization disallowed (%d)\n",
(long)(conn ? conn->c_connid : -1), rc, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
" authorization disallowed (%d)\n",
(long) (conn ? conn->c_connid : -1), rc, 0 );
#endif
sasl_seterror( sconn, 0, "not authorized" );
ch_free( authzDN.bv_val );
return SASL_NOAUTHZ;
}
conn->c_sasl_dn = authzDN;
ok:
if (conn->c_sasl_bindop) {
Statslog( LDAP_DEBUG_STATS,
"conn=%lu op=%lu BIND authcid=\"%s\"\n",
conn->c_connid, conn->c_sasl_bindop->o_opid,
auth_identity, 0, 0);
}
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"slap_sasl_authorize: conn %d authorization allowed\n",
(long)(conn ? conn->c_connid : -1), 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
" authorization allowed\n",
(long) (conn ? conn->c_connid : -1), 0, 0 );
#endif
return SASL_OK;
}
#else
static int
slap_sasl_authorize(
void *context,
char *authcid,
char *authzid,
const char **user,
const char **errstr)
{
struct berval authcDN, authzDN;
int rc;
Connection *conn = context;
char *realm;
*user = NULL;
if ( conn->c_sasl_dn.bv_val ) {
ch_free( conn->c_sasl_dn.bv_val );
conn->c_sasl_dn.bv_val = NULL;
conn->c_sasl_dn.bv_len = 0;
}
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"slap_sasl_authorize: conn %d authcid=\"%s\" authzid=\"%s\"\n",
conn ? conn->c_connid : -1, authcid ? authcid : "<empty>",
authzid ? authzid : "<empty>" );
#else
Debug( LDAP_DEBUG_ARGS, "SASL Authorize [conn=%ld]: "
"authcid=\"%s\" authzid=\"%s\"\n",
(long) (conn ? conn->c_connid : -1),
authcid ? authcid : "<empty>",
authzid ? authzid : "<empty>" );
#endif
/* Figure out how much data we have for the dn */
rc = sasl_getprop( conn->c_sasl_context, SASL_REALM, (void **)&realm );
if( rc != SASL_OK && rc != SASL_NOTDONE ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ERR,
"slap_sasl_authorize: getprop(REALM) failed.\n", 0, 0, 0 );
#else
Debug(LDAP_DEBUG_TRACE,
"authorize: getprop(REALM) failed!\n", 0,0,0);
#endif
*errstr = "Could not extract realm";
return SASL_NOAUTHZ;
}
/* Convert the identities to DN's. If no authzid was given, client will
be bound as the DN matching their username */
rc = slap_sasl_getdn( conn, (char *)authcid, 0, realm,
&authcDN, SLAP_GETDN_AUTHCID );
if( rc != LDAP_SUCCESS ) {
*errstr = ldap_err2string( rc );
return SASL_NOAUTHZ;
}
if( ( authzid == NULL ) || !strcmp( authcid,authzid ) ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"slap_sasl_authorize: conn %d Using authcDN=%s\n",
conn ? conn->c_connid : -1, authcDN.bv_val, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
"Using authcDN=%s\n", (long) (conn ? conn->c_connid : -1), authcDN.bv_val,0 );
#endif
conn->c_sasl_dn = authcDN;
goto ok;
}
rc = slap_sasl_getdn( conn, (char *)authzid, 0, realm,
&authzDN, SLAP_GETDN_AUTHZID );
if( rc != LDAP_SUCCESS ) {
ch_free( authcDN.bv_val );
*errstr = ldap_err2string( rc );
return SASL_NOAUTHZ;
}
rc = slap_sasl_authorized(conn, &authcDN, &authzDN );
ch_free( authcDN.bv_val );
if( rc ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, INFO,
"slap_sasl_authorize: conn %ld authorization disallowed (%d)\n",
(long)(conn ? conn->c_connid : -1), rc, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
" authorization disallowed (%d)\n",
(long) (conn ? conn->c_connid : -1), rc, 0 );
#endif
*errstr = "not authorized";
ch_free( authzDN.bv_val );
return SASL_NOAUTHZ;
}
conn->c_sasl_dn = authzDN;
ok:
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, RESULTS,
"slap_sasl_authorize: conn %d authorization allowed\n",
(long)(conn ? conn->c_connid : -1 ), 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
" authorization allowed\n",
(long) (conn ? conn->c_connid : -1), 0, 0 );
#endif
if (conn->c_sasl_bindop) {
Statslog( LDAP_DEBUG_STATS,
"conn=%lu op=%lu BIND authcid=\"%s\"\n",
conn->c_connid, conn->c_sasl_bindop->o_opid,
authcid, 0, 0);
}
*errstr = NULL;
return SASL_OK;
}
#endif /* SASL_VERSION_MAJOR >= 2 */
static int
slap_sasl_err2ldap( int saslerr )
{
int rc;
switch (saslerr) {
case SASL_CONTINUE:
rc = LDAP_SASL_BIND_IN_PROGRESS;
break;
case SASL_FAIL:
rc = LDAP_OTHER;
break;
case SASL_NOMEM:
rc = LDAP_OTHER;
break;
case SASL_NOMECH:
rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
break;
case SASL_BADAUTH:
rc = LDAP_INVALID_CREDENTIALS;
break;
case SASL_NOAUTHZ:
rc = LDAP_INSUFFICIENT_ACCESS;
break;
case SASL_TOOWEAK:
case SASL_ENCRYPT:
rc = LDAP_INAPPROPRIATE_AUTH;
break;
default:
rc = LDAP_OTHER;
break;
}
return rc;
}
#endif
int slap_sasl_init( void )
{
#ifdef HAVE_CYRUS_SASL
int rc;
static sasl_callback_t server_callbacks[] = {
{ SASL_CB_LOG, &slap_sasl_log, NULL },
{ SASL_CB_LIST_END, NULL, NULL }
};
#ifdef HAVE_SASL_VERSION
#define SASL_BUILD_VERSION ((SASL_VERSION_MAJOR << 24) |\
(SASL_VERSION_MINOR << 16) | SASL_VERSION_STEP)
sasl_version( NULL, &rc );
if ( ((rc >> 16) != ((SASL_VERSION_MAJOR << 8)|SASL_VERSION_MINOR)) ||
(rc & 0xffff) < SASL_VERSION_STEP) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, INFO,
"slap_sasl_init: SASL version mismatch, got %x, wanted %x.\n",
rc, SASL_BUILD_VERSION, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"slap_sasl_init: SASL version mismatch, got %x, wanted %x.\n",
rc, SASL_BUILD_VERSION, 0 );
#endif
return -1;
}
#endif
/* SASL 2 does its own memory management internally */
#if SASL_VERSION_MAJOR < 2
sasl_set_alloc(
ber_memalloc,
ber_memcalloc,
ber_memrealloc,
ber_memfree );
#endif
sasl_set_mutex(
ldap_pvt_sasl_mutex_new,
ldap_pvt_sasl_mutex_lock,
ldap_pvt_sasl_mutex_unlock,
ldap_pvt_sasl_mutex_dispose );
#if SASL_VERSION_MAJOR >= 2
sasl_auxprop_add_plugin( "slapd", slap_auxprop_init );
#endif
/* should provide callbacks for logging */
/* server name should be configurable */
rc = sasl_server_init( server_callbacks, "slapd" );
if( rc != SASL_OK ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, INFO, "slap_sasl_init: init failed.\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "sasl_server_init failed\n",
0, 0, 0 );
#endif
#if SASL_VERSION_MAJOR < 2
/* A no-op used to make sure we linked with Cyrus 1.5 */
sasl_client_auth( NULL, NULL, NULL, 0, NULL, NULL );
#endif
return -1;
}
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, INFO, "slap_sasl_init: initialized!\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "slap_sasl_init: initialized!\n",
0, 0, 0 );
#endif
/* default security properties */
memset( &sasl_secprops, '\0', sizeof(sasl_secprops) );
sasl_secprops.max_ssf = INT_MAX;
sasl_secprops.maxbufsize = 65536;
sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
#endif
return 0;
}
int slap_sasl_destroy( void )
{
#ifdef HAVE_CYRUS_SASL
sasl_done();
#endif
#if SASL_VERSION_MAJOR >= 2
filter_free( generic_filter );
#endif
free( global_host );
global_host = NULL;
return 0;
}
int slap_sasl_open( Connection *conn )
{
int cb, sc = LDAP_SUCCESS;
#if SASL_VERSION_MAJOR >= 2
char *ipremoteport = NULL, *iplocalport = NULL;
#endif
#ifdef HAVE_CYRUS_SASL
sasl_conn_t *ctx = NULL;
sasl_callback_t *session_callbacks;
assert( conn->c_sasl_context == NULL );
assert( conn->c_sasl_extra == NULL );
conn->c_sasl_layers = 0;
session_callbacks =
#if SASL_VERSION_MAJOR >= 2
SLAP_CALLOC( 5, sizeof(sasl_callback_t));
#else
SLAP_CALLOC( 3, sizeof(sasl_callback_t));
#endif
if( session_callbacks == NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ERR,
"slap_sasl_open: SLAP_MALLOC failed", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"slap_sasl_open: SLAP_MALLOC failed", 0, 0, 0 );
#endif
return -1;
}
conn->c_sasl_extra = session_callbacks;
session_callbacks[cb=0].id = SASL_CB_LOG;
session_callbacks[cb].proc = &slap_sasl_log;
session_callbacks[cb++].context = conn;
session_callbacks[cb].id = SASL_CB_PROXY_POLICY;
session_callbacks[cb].proc = &slap_sasl_authorize;
session_callbacks[cb++].context = conn;
#if SASL_VERSION_MAJOR >= 2
session_callbacks[cb].id = SASL_CB_CANON_USER;
session_callbacks[cb].proc = &slap_sasl_canonicalize;
session_callbacks[cb++].context = conn;
/* XXXX: this should be conditional */
session_callbacks[cb].id = SASL_CB_SERVER_USERDB_CHECKPASS;
session_callbacks[cb].proc = &slap_sasl_checkpass;
session_callbacks[cb++].context = conn;
#endif
session_callbacks[cb].id = SASL_CB_LIST_END;
session_callbacks[cb].proc = NULL;
session_callbacks[cb++].context = NULL;
if( global_host == NULL ) {
global_host = ldap_pvt_get_fqdn( NULL );
}
/* create new SASL context */
#if SASL_VERSION_MAJOR >= 2
if ( generic_filter == NULL ) {
generic_filter = str2filter( "(objectclass=*)" );
}
if ( conn->c_sock_name.bv_len != 0 &&
strncmp( conn->c_sock_name.bv_val, "IP=", 3 ) == 0) {
char *p;
iplocalport = ch_strdup( conn->c_sock_name.bv_val + 3 );
/* Convert IPv6 addresses to address;port syntax. */
p = strrchr( iplocalport, ' ' );
/* Convert IPv4 addresses to address;port syntax. */
if ( p == NULL ) p = strchr( iplocalport, ':' );
if ( p != NULL ) {
*p = ';';
}
}
if ( conn->c_peer_name.bv_len != 0 &&
strncmp( conn->c_peer_name.bv_val, "IP=", 3 ) == 0) {
char *p;
ipremoteport = ch_strdup( conn->c_peer_name.bv_val + 3 );
/* Convert IPv6 addresses to address;port syntax. */
p = strrchr( ipremoteport, ' ' );
/* Convert IPv4 addresses to address;port syntax. */
if ( p == NULL ) p = strchr( ipremoteport, ':' );
if ( p != NULL ) {
*p = ';';
}
}
sc = sasl_server_new( "ldap", global_host, global_realm,
iplocalport, ipremoteport, session_callbacks, SASL_SUCCESS_DATA, &ctx );
if ( iplocalport != NULL ) {
ch_free( iplocalport );
}
if ( ipremoteport != NULL ) {
ch_free( ipremoteport );
}
#else
sc = sasl_server_new( "ldap", global_host, global_realm,
session_callbacks, SASL_SECURITY_LAYER, &ctx );
#endif
if( sc != SASL_OK ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ERR,
"slap_sasl_open: sasl_server_new failed: %d\n", sc, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "sasl_server_new failed: %d\n",
sc, 0, 0 );
#endif
return -1;
}
conn->c_sasl_context = ctx;
if( sc == SASL_OK ) {
sc = sasl_setprop( ctx,
SASL_SEC_PROPS, &sasl_secprops );
if( sc != SASL_OK ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ERR,
"slap_sasl_open: sasl_setprop failed: %d \n", sc, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "sasl_setprop failed: %d\n",
sc, 0, 0 );
#endif
slap_sasl_close( conn );
return -1;
}
}
sc = slap_sasl_err2ldap( sc );
#endif
return sc;
}
int slap_sasl_external(
Connection *conn,
slap_ssf_t ssf,
const char *auth_id )
{
#if SASL_VERSION_MAJOR >= 2
int sc;
sasl_conn_t *ctx = conn->c_sasl_context;
if ( ctx == NULL ) {
return LDAP_UNAVAILABLE;
}
sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf );
if ( sc != SASL_OK ) {
return LDAP_OTHER;
}
sc = sasl_setprop( ctx, SASL_AUTH_EXTERNAL, auth_id );
if ( sc != SASL_OK ) {
return LDAP_OTHER;
}
#elif defined(HAVE_CYRUS_SASL)
int sc;
sasl_conn_t *ctx = conn->c_sasl_context;
sasl_external_properties_t extprops;
if ( ctx == NULL ) {
return LDAP_UNAVAILABLE;
}
memset( &extprops, '\0', sizeof(extprops) );
extprops.ssf = ssf;
extprops.auth_id = (char *) auth_id;
sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
(void *) &extprops );
if ( sc != SASL_OK ) {
return LDAP_OTHER;
}
#endif
return LDAP_SUCCESS;
}
int slap_sasl_reset( Connection *conn )
{
#ifdef HAVE_CYRUS_SASL
sasl_conn_t *ctx = conn->c_sasl_context;
if( ctx != NULL ) {
}
#endif
/* must return "anonymous" */
return LDAP_SUCCESS;
}
char ** slap_sasl_mechs( Connection *conn )
{
char **mechs = NULL;
#ifdef HAVE_CYRUS_SASL
sasl_conn_t *ctx = conn->c_sasl_context;
if( ctx != NULL ) {
int sc;
SASL_CONST char *mechstr;
sc = sasl_listmech( ctx,
NULL, NULL, ",", NULL,
&mechstr, NULL, NULL );
if( sc != SASL_OK ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ERR,
"slap_sasl_mechs: sasl_listmech failed: %d\n", sc, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
sc, 0, 0 );
#endif
return NULL;
}
mechs = ldap_str2charray( mechstr, "," );
#if SASL_VERSION_MAJOR < 2
ch_free( mechstr );
#endif
}
#endif
return mechs;
}
int slap_sasl_close( Connection *conn )
{
#ifdef HAVE_CYRUS_SASL
sasl_conn_t *ctx = conn->c_sasl_context;
if( ctx != NULL ) {
sasl_dispose( &ctx );
}
conn->c_sasl_context = NULL;
free( conn->c_sasl_extra );
conn->c_sasl_extra = NULL;
#endif
return LDAP_SUCCESS;
}
int slap_sasl_bind( Operation *op, SlapReply *rs )
{
#ifdef HAVE_CYRUS_SASL
sasl_conn_t *ctx = op->o_conn->c_sasl_context;
struct berval response;
unsigned reslen = 0;
int sc;
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "",
op->o_conn->c_sasl_bind_in_progress ? "<continuing>" :
op->o_conn->c_sasl_bind_mech.bv_val,
op->orb_cred.bv_len );
#else
Debug(LDAP_DEBUG_ARGS,
"==> sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "",
op->o_conn->c_sasl_bind_in_progress ? "<continuing>" :
op->o_conn->c_sasl_bind_mech.bv_val,
op->orb_cred.bv_len );
#endif
if( ctx == NULL ) {
send_ldap_error( op, rs, LDAP_UNAVAILABLE,
"SASL unavailable on this session" );
return rs->sr_err;
}
#if SASL_VERSION_MAJOR >= 2
#define START( ctx, mech, cred, clen, resp, rlen, err ) \
sasl_server_start( ctx, mech, cred, clen, resp, rlen )
#define STEP( ctx, cred, clen, resp, rlen, err ) \
sasl_server_step( ctx, cred, clen, resp, rlen )
#else
#define START( ctx, mech, cred, clen, resp, rlen, err ) \
sasl_server_start( ctx, mech, cred, clen, resp, rlen, err )
#define STEP( ctx, cred, clen, resp, rlen, err ) \
sasl_server_step( ctx, cred, clen, resp, rlen, err )
#endif
if ( !op->o_conn->c_sasl_bind_in_progress ) {
sc = START( ctx,
op->o_conn->c_sasl_bind_mech.bv_val,
op->orb_cred.bv_val, op->orb_cred.bv_len,
(SASL_CONST char **)&response.bv_val, &reslen, &rs->sr_text );
} else {
sc = STEP( ctx,
op->orb_cred.bv_val, op->orb_cred.bv_len,
(SASL_CONST char **)&response.bv_val, &reslen, &rs->sr_text );
}
response.bv_len = reslen;
if ( sc == SASL_OK ) {
sasl_ssf_t *ssf = NULL;
op->orb_edn = op->o_conn->c_sasl_dn;
op->o_conn->c_sasl_dn.bv_val = NULL;
op->o_conn->c_sasl_dn.bv_len = 0;
rs->sr_err = LDAP_SUCCESS;
(void) sasl_getprop( ctx, SASL_SSF, (void *)&ssf );
op->orb_ssf = ssf ? *ssf : 0;
if( op->orb_ssf ) {
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
op->o_conn->c_sasl_layers++;
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
}
if (response.bv_len) rs->sr_sasldata = &response;
send_ldap_sasl( op, rs );
} else if ( sc == SASL_CONTINUE ) {
rs->sr_err = LDAP_SASL_BIND_IN_PROGRESS,
rs->sr_sasldata = &response;
send_ldap_sasl( op, rs );
} else {
#if SASL_VERSION_MAJOR >= 2
rs->sr_text = sasl_errdetail( ctx );
#endif
rs->sr_err = slap_sasl_err2ldap( sc ),
send_ldap_result( op, rs );
}
#if SASL_VERSION_MAJOR < 2
if( response.bv_len ) {
ch_free( response.bv_val );
}
#endif
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, RESULTS, "slap_sasl_bind: rc=%d\n", rs->sr_err, 0, 0 );
#else
Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: rc=%d\n", rs->sr_err, 0, 0);
#endif
#else
send_ldap_error( op, rs, LDAP_UNAVAILABLE,
"SASL not supported" );
#endif
return rs->sr_err;
}
char* slap_sasl_secprops( const char *in )
{
#ifdef HAVE_CYRUS_SASL
int rc = ldap_pvt_sasl_secprops( in, &sasl_secprops );
return rc == LDAP_SUCCESS ? NULL : "Invalid security properties";
#else
return "SASL not supported";
#endif
}
#ifdef HAVE_CYRUS_SASL
int
slap_sasl_setpass( Operation *op, SlapReply *rs )
{
struct berval id = { 0, NULL }; /* needs to come from connection */
struct berval new = { 0, NULL };
struct berval old = { 0, NULL };
assert( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->oq_extended.rs_reqoid ) == 0 );
rs->sr_err = sasl_getprop( op->o_conn->c_sasl_context, SASL_USERNAME,
(SASL_CONST void **)&id.bv_val );
if( rs->sr_err != SASL_OK ) {
rs->sr_text = "unable to retrieve SASL username";
rs->sr_err = LDAP_OTHER;
goto done;
}
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, ENTRY,
"slap_sasl_setpass: \"%s\"\n",
id.bv_val ? id.bv_val : "", 0, 0);
#else
Debug( LDAP_DEBUG_ARGS, "==> slap_sasl_setpass: \"%s\"\n",
id.bv_val ? id.bv_val : "", 0, 0 );
#endif
rs->sr_err = slap_passwd_parse( op->oq_extended.rs_reqdata,
NULL, &old, &new, &rs->sr_text );
if( rs->sr_err != LDAP_SUCCESS ) {
goto done;
}
if( new.bv_len == 0 ) {
slap_passwd_generate(&new);
if( new.bv_len == 0 ) {
rs->sr_text = "password generation failed.";
rs->sr_err = LDAP_OTHER;
goto done;
}
rs->sr_rspdata = slap_passwd_return( &new );
}
#if SASL_VERSION_MAJOR < 2
rs->sr_err = sasl_setpass( op->o_conn->c_sasl_context,
id.bv_val, new.bv_val, new.bv_len, 0, &rs->sr_text );
#else
rs->sr_err = sasl_setpass( op->o_conn->c_sasl_context, id.bv_val,
new.bv_val, new.bv_len, old.bv_val, old.bv_len, 0 );
if( rs->sr_err != SASL_OK ) {
rs->sr_text = sasl_errdetail( op->o_conn->c_sasl_context );
}
#endif
switch(rs->sr_err) {
case SASL_OK:
rs->sr_err = LDAP_SUCCESS;
break;
case SASL_NOCHANGE:
case SASL_NOMECH:
case SASL_DISABLED:
case SASL_PWLOCK:
case SASL_FAIL:
case SASL_BADPARAM:
default:
rs->sr_err = LDAP_OTHER;
}
done:
return rs->sr_err;
}
#endif /* HAVE_CYRUS_SASL */
/* Take any sort of identity string and return a DN with the "dn:" prefix. The
string returned in *dn is in its own allocated memory, and must be free'd
by the calling process.
-Mark Adamson, Carnegie Mellon
The "dn:" prefix is no longer used anywhere inside slapd. It is only used
on strings passed in directly from SASL.
-Howard Chu, Symas Corp.
*/
#define SET_NONE 0
#define SET_DN 1
#define SET_U 2
static struct berval ext_bv = BER_BVC( "EXTERNAL" );
int slap_sasl_getdn( Connection *conn, char *id, int len,
char *user_realm, struct berval *dn, int flags )
{
char *c1;
int rc, is_dn = SET_NONE, do_norm = 1;
struct berval dn2;
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"slap_sasl_getdn: conn %d id=%s [len=%d]\n",
conn ? conn->c_connid : -1, id ? (*id ? id : "<empty>") : "NULL", len );
#else
Debug( LDAP_DEBUG_ARGS, "slap_sasl_getdn: id=%s [len=%d]\n",
id ? ( *id ? id : "<empty>" ) : "NULL", len, 0 );
#endif
dn->bv_val = NULL;
dn->bv_len = 0;
if ( id ) {
if ( len == 0 ) len = strlen( id );
/* Blatantly anonymous ID */
if ( len == sizeof("anonymous") - 1 &&
!strcasecmp( id, "anonymous" ) ) {
return( LDAP_SUCCESS );
}
} else {
len = 0;
}
/* An authcID needs to be converted to authzID form. Set the
* values directly into *dn; they will be normalized later. (and
* normalizing always makes a new copy.) An ID from a TLS certificate
* is already normalized, so copy it and skip normalization.
*/
if( flags & SLAP_GETDN_AUTHCID ) {
if( conn->c_sasl_bind_mech.bv_len == ext_bv.bv_len &&
strcasecmp( ext_bv.bv_val, conn->c_sasl_bind_mech.bv_val ) == 0 )
{
/* EXTERNAL DNs are already normalized */
do_norm = 0;
is_dn = SET_DN;
ber_str2bv( id, len, 1, dn );
} else {
/* convert to u:<username> form */
is_dn = SET_U;
dn->bv_val = id;
dn->bv_len = len;
}
}
if( is_dn == SET_NONE ) {
if( !strncasecmp( id, "u:", sizeof("u:")-1 )) {
is_dn = SET_U;
dn->bv_val = id+2;
dn->bv_len = len-2;
} else if ( !strncasecmp( id, "dn:", sizeof("dn:")-1) ) {
is_dn = SET_DN;
dn->bv_val = id+3;
dn->bv_len = len-3;
}
}
/* No other possibilities from here */
if( is_dn == SET_NONE ) {
dn->bv_val = NULL;
dn->bv_len = 0;
return( LDAP_INAPPROPRIATE_AUTH );
}
/* Username strings */
if( is_dn == SET_U ) {
char *p, *realm;
len = dn->bv_len + sizeof("uid=")-1 + sizeof(",cn=auth")-1;
/* username may have embedded realm name */
if( ( realm = strchr( dn->bv_val, '@') ) ) {
*realm++ = '\0';
len += sizeof(",cn=")-2;
} else if( user_realm && *user_realm ) {
len += strlen( user_realm ) + sizeof(",cn=")-1;
}
if( conn->c_sasl_bind_mech.bv_len ) {
len += conn->c_sasl_bind_mech.bv_len + sizeof(",cn=")-1;
}
/* Build the new dn */
c1 = dn->bv_val;
dn->bv_val = SLAP_MALLOC( len+1 );
if( dn->bv_val == NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ERR,
"slap_sasl_getdn: SLAP_MALLOC failed", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"slap_sasl_getdn: SLAP_MALLOC failed", 0, 0, 0 );
#endif
return LDAP_OTHER;
}
p = lutil_strcopy( dn->bv_val, "uid=" );
p = lutil_strncopy( p, c1, dn->bv_len );
if( realm ) {
int rlen = dn->bv_len - ( realm - c1 );
p = lutil_strcopy( p, ",cn=" );
p = lutil_strncopy( p, realm, rlen );
realm[-1] = '@';
} else if( user_realm && *user_realm ) {
p = lutil_strcopy( p, ",cn=" );
p = lutil_strcopy( p, user_realm );
}
if( conn->c_sasl_bind_mech.bv_len ) {
p = lutil_strcopy( p, ",cn=" );
p = lutil_strcopy( p, conn->c_sasl_bind_mech.bv_val );
}
p = lutil_strcopy( p, ",cn=auth" );
dn->bv_len = p - dn->bv_val;
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"slap_sasl_getdn: u:id converted to %s.\n", dn->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "getdn: u:id converted to %s\n", dn->bv_val,0,0 );
#endif
} else {
/* Dup the DN in any case, so we don't risk
* leaks or dangling pointers later,
* and the DN value is '\0' terminated */
ber_dupbv( &dn2, dn );
dn->bv_val = dn2.bv_val;
}
/* All strings are in DN form now. Normalize if needed. */
if ( do_norm ) {
rc = dnNormalize2( NULL, dn, &dn2 );
/* User DNs were constructed above and must be freed now */
ch_free( dn->bv_val );
if ( rc != LDAP_SUCCESS ) {
dn->bv_val = NULL;
dn->bv_len = 0;
return rc;
}
*dn = dn2;
}
/* Run thru regexp */
slap_sasl2dn( conn, dn, &dn2 );
if( dn2.bv_val ) {
ch_free( dn->bv_val );
*dn = dn2;
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, ENTRY,
"slap_sasl_getdn: dn:id converted to %s.\n", dn->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "getdn: dn:id converted to %s\n",
dn->bv_val, 0, 0 );
#endif
}
return( LDAP_SUCCESS );
}
Reference in New Issue View Git Blame Copy Permalink