+/*
+ * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
/*
* Copyright (c) 2000, Mark Adamson, Carnegie Mellon. All rights reserved.
* This software is not subject to any license of Carnegie Mellon University.
#include "portable.h"
-#include <ac/stdlib.h>
#include <stdio.h>
-#define SLAPD_TOOLS
-#include "slap.h"
-#undef SLAPD_TOOLS
-#include "proto-slap.h"
+#include <ac/stdlib.h>
+#include <ac/string.h>
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#elif defined (HAVE_STRING_H)
-#include <string.h>
-#endif
+#include "slap.h"
#ifdef HAVE_CYRUS_SASL
#include <limits.h>
-#include <sasl.h>
-#include <ldap_pvt.h>
-extern int nSaslRegexp;
-extern SaslRegexp_t *SaslRegexp;
+#ifdef HAVE_SASL_SASL_H
+#include <sasl/sasl.h>
+#else
+#include <sasl.h>
#endif
+#include <ldap_pvt.h>
+
+#define SASLREGEX_REPLACE 10
+typedef struct sasl_regexp {
+ char *sr_match; /* regexp match pattern */
+ char *sr_replace; /* regexp replace pattern */
+ regex_t sr_workspace; /* workspace for regexp engine */
+ regmatch_t sr_strings[SASLREGEX_REPLACE]; /* strings matching $1,$2 ... */
+ int sr_offset[SASLREGEX_REPLACE+2]; /* offsets of $1,$2... in *replace */
+} SaslRegexp_t;
+static int nSaslRegexp = 0;
+static SaslRegexp_t *SaslRegexp = NULL;
+/* What SASL proxy authorization policies are allowed? */
+#define SASL_AUTHZ_NONE 0
+#define SASL_AUTHZ_FROM 1
+#define SASL_AUTHZ_TO 2
-/* URI format: ldap://<host>/<base>[?[<attrs>][?[<scope>][?[<filter>]]]] */
+static int authz_policy = SASL_AUTHZ_NONE;
-int slap_parseURI( char *uri, char **searchbase, int *scope, Filter **filter )
+int slap_sasl_setpolicy( const char *arg )
{
- char *start, *end;
+ int rc = LDAP_SUCCESS;
+
+ if ( strcasecmp( arg, "none" ) == 0 )
+ authz_policy = SASL_AUTHZ_NONE;
+ else if ( strcasecmp( arg, "from" ) == 0 )
+ authz_policy = SASL_AUTHZ_FROM;
+ else if ( strcasecmp( arg, "to" ) == 0 )
+ authz_policy = SASL_AUTHZ_TO;
+ else if ( strcasecmp( arg, "both" ) == 0 )
+ authz_policy = SASL_AUTHZ_FROM | SASL_AUTHZ_TO;
+ else
+ rc = LDAP_OTHER;
+ return rc;
+}
+/* URI format: ldap://<host>/<base>[?[<attrs>][?[<scope>][?[<filter>]]]] */
- assert( uri != NULL );
- *searchbase = NULL;
+static int slap_parseURI( struct berval *uri,
+ struct berval *searchbase, int *scope, Filter **filter )
+{
+ struct berval bv;
+ int rc;
+ LDAPURLDesc *ludp;
+
+ assert( uri != NULL && uri->bv_val != NULL );
+ searchbase->bv_val = NULL;
+ searchbase->bv_len = 0;
*scope = -1;
*filter = NULL;
- Debug( LDAP_DEBUG_TRACE, "slap_parseURI: parsing %s\n", uri, 0, 0 );
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_parseURI: parsing %s\n", uri->bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_parseURI: parsing %s\n", uri->bv_val, 0, 0 );
+#endif
/* If it does not look like a URI, assume it is a DN */
- if( strncasecmp( uri, "ldap://", 7 ) ) {
- *searchbase = ch_strdup( uri );
- dn_normalize( *searchbase );
- *scope = LDAP_SCOPE_BASE;
- return( LDAP_SUCCESS );
- }
-
- end = index( uri + 7, '/' );
- if ( end == NULL )
- return( LDAP_PROTOCOL_ERROR );
+ if( !strncasecmp( uri->bv_val, "dn:", sizeof("dn:")-1 ) ) {
+ bv.bv_val = uri->bv_val + sizeof("dn:")-1;
+ bv.bv_val += strspn( bv.bv_val, " " );
- /* could check the hostname here */
+is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val);
- /* Grab the searchbase */
- start = end+1;
- end = index( start, '?' );
- if( end == NULL ) {
- *searchbase = ch_strdup( start );
- dn_normalize( *searchbase );
- return( LDAP_SUCCESS );
- }
- *end = '\0';
- *searchbase = ch_strdup( start );
- *end = '?';
- dn_normalize( *searchbase );
-
- /* Skip the attrs */
- start = end+1;
- end = index( start, '?' );
- if( end == NULL ) {
- return( LDAP_SUCCESS );
+ rc = dnNormalize2( NULL, &bv, searchbase );
+ if( rc == LDAP_SUCCESS ) {
+ *scope = LDAP_SCOPE_BASE;
+ }
+ return( rc );
}
- /* Grab the scope */
- start = end+1;
- if( !strncasecmp( start, "base?", 5 )) {
- *scope = LDAP_SCOPE_BASE;
- start += 5;
- }
- else if( !strncasecmp( start, "one?", 4 )) {
- *scope = LDAP_SCOPE_ONELEVEL;
- start += 4;
+ rc = ldap_url_parse( uri->bv_val, &ludp );
+ if ( rc == LDAP_URL_ERR_BADSCHEME ) {
+ bv.bv_val = uri->bv_val;
+ goto is_dn;
}
- else if( !strncasecmp( start, "sub?", 3 )) {
- *scope = LDAP_SCOPE_SUBTREE;
- start += 4;
- }
- else {
- ch_free( *searchbase );
- *searchbase = NULL;
- return( LDAP_PROTOCOL_ERROR );
+
+ if ( rc != LDAP_URL_SUCCESS ) {
+ return LDAP_PROTOCOL_ERROR;
}
- /* Grab the filter */
- *filter = str2filter( start );
+ if (( ludp->lud_host && *ludp->lud_host )
+ || ludp->lud_attrs || ludp->lud_exts )
+ {
+ /* host part should be empty */
+ /* attrs and extensions parts should be empty */
+ return LDAP_PROTOCOL_ERROR;
+ }
- return( LDAP_SUCCESS );
-}
+ /* Grab the scope */
+ *scope = ludp->lud_scope;
+ /* Grab the filter */
+ if ( ludp->lud_filter ) {
+ *filter = str2filter( ludp->lud_filter );
+ if ( *filter == NULL ) {
+ rc = LDAP_PROTOCOL_ERROR;
+ goto done;
+ }
+ }
+ /* Grab the searchbase */
+ bv.bv_val = ludp->lud_dn;
+ bv.bv_len = strlen( bv.bv_val );
+ rc = dnNormalize2( NULL, &bv, searchbase );
+done:
+ if( rc != LDAP_SUCCESS ) {
+ if( *filter ) filter_free( *filter );
+ }
+ ldap_free_urldesc( ludp );
+ return( rc );
+}
-int slap_sasl_regexp_config( const char *match, const char *replace )
+static int slap_sasl_rx_off(char *rep, int *off)
{
-#ifdef HAVE_CYRUS_SASL
const char *c;
- int rc, n;
- SaslRegexp_t *reg;
-
- SaslRegexp = (SaslRegexp_t *) ch_realloc( (char *) SaslRegexp,
- (nSaslRegexp + 1) * sizeof(SaslRegexp_t) );
- reg = &( SaslRegexp[nSaslRegexp] );
- reg->match = ch_strdup( match );
- reg->replace = ch_strdup( replace );
- dn_normalize( reg->match );
- dn_normalize( reg->replace );
-
- /* Precompile matching pattern */
- rc = regcomp( ®->workspace, reg->match, REG_EXTENDED|REG_ICASE );
- if ( rc ) {
- Debug( LDAP_DEBUG_ANY,
- "SASL match pattern %s could not be compiled by regexp engine\n",
- reg->match, 0, 0 );
- return( LDAP_OPERATIONS_ERROR );
- }
+ int n;
/* Precompile replace pattern. Find the $<n> placeholders */
- reg->offset[0] = -2;
+ off[0] = -2;
n = 1;
- for ( c = reg->replace; *c; c++ ) {
- if ( *c == '\\' ) {
+ for ( c = rep; *c; c++ ) {
+ if ( *c == '\\' && c[1] ) {
c++;
continue;
}
if ( *c == '$' ) {
if ( n == SASLREGEX_REPLACE ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ERR,
+ "slap_sasl_rx_off: \"%s\" has too many $n "
+ "placeholders (max %d)\n", rep, SASLREGEX_REPLACE, 0 );
+#else
Debug( LDAP_DEBUG_ANY,
- "SASL replace pattern %s has too many $n placeholders (max %d)\n",
- reg->replace, SASLREGEX_REPLACE, 0 );
- return( LDAP_OPERATIONS_ERROR );
+ "SASL replace pattern %s has too many $n "
+ "placeholders (max %d)\n",
+ rep, SASLREGEX_REPLACE, 0 );
+#endif
+
+ return( LDAP_OTHER );
}
- reg->offset[n] = c - reg->replace;
+ off[n] = c - rep;
n++;
}
}
/* Final placeholder, after the last $n */
- reg->offset[n] = c - reg->replace;
+ off[n] = c - rep;
n++;
- reg->offset[n] = -1;
-
- nSaslRegexp++;
-#endif
+ off[n] = -1;
return( LDAP_SUCCESS );
}
-
-
-
-
-#ifdef HAVE_CYRUS_SASL
-
-
-
-/* Take the passed in SASL name and attempt to convert it into an
- LDAP URI to find the matching LDAP entry, using the pattern matching
- strings given in the saslregexp config file directive(s) */
-static
-char *slap_sasl_regexp( char *saslname )
+int slap_sasl_regexp_config( const char *match, const char *replace )
{
- char *uri=NULL;
- int i, n, len, insert;
+ int rc;
SaslRegexp_t *reg;
+ SaslRegexp = (SaslRegexp_t *) ch_realloc( (char *) SaslRegexp,
+ (nSaslRegexp + 1) * sizeof(SaslRegexp_t) );
- Debug( LDAP_DEBUG_TRACE, "slap_sasl_regexp: converting SASL name %s\n",
- saslname, 0, 0 );
- if (( saslname == NULL ) || ( nSaslRegexp == 0 ))
- return( NULL );
+ reg = &SaslRegexp[nSaslRegexp];
- /* Match the normalized SASL name to the saslregexp patterns */
- for( reg = SaslRegexp,i=0; i<nSaslRegexp; i++,reg++ ) {
- if ( regexec( ®->workspace, saslname, SASLREGEX_REPLACE,
- reg->strings, 0) == REG_OK )
- break;
+ reg->sr_match = ch_strdup( match );
+ reg->sr_replace = ch_strdup( replace );
+
+ /* Precompile matching pattern */
+ rc = regcomp( ®->sr_workspace, reg->sr_match, REG_EXTENDED|REG_ICASE );
+ if ( rc ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ERR,
+ "slap_sasl_regexp_config: \"%s\" could not be compiled.\n",
+ reg->sr_match, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "SASL match pattern %s could not be compiled by regexp engine\n",
+ reg->sr_match, 0, 0 );
+#endif
+
+ return( LDAP_OTHER );
}
- if( i >= nSaslRegexp )
- return( NULL );
+ rc = slap_sasl_rx_off( reg->sr_replace, reg->sr_offset );
+ if ( rc != LDAP_SUCCESS ) return rc;
- /*
- * The match pattern may have been of the form "a(b.*)c(d.*)e" and the
- * replace pattern of the form "x$1y$2z". The returned string needs
- * to replace the $1,$2 with the strings that matched (b.*) and (d.*)
- */
+ nSaslRegexp++;
+ return( LDAP_SUCCESS );
+}
+/* Perform replacement on regexp matches */
+static void slap_sasl_rx_exp(
+ const char *rep,
+ const int *off,
+ regmatch_t *str,
+ const char *saslname,
+ struct berval *out )
+{
+ int i, n, len, insert;
+
/* Get the total length of the final URI */
n=1;
len = 0;
- while( reg->offset[n] >= 0 ) {
+ while( off[n] >= 0 ) {
/* Len of next section from replacement string (x,y,z above) */
- len += reg->offset[n] - reg->offset[n-1] - 2;
- if( reg->offset[n+1] < 0)
+ len += off[n] - off[n-1] - 2;
+ if( off[n+1] < 0)
break;
/* Len of string from saslname that matched next $i (b,d above) */
- i = reg->replace[ reg->offset[n] + 1 ] - '0';
- len += reg->strings[i].rm_eo - reg->strings[i].rm_so;
+ i = rep[ off[n] + 1 ] - '0';
+ len += str[i].rm_eo - str[i].rm_so;
n++;
}
- uri = ch_malloc( len + 1 );
+ out->bv_val = ch_malloc( len + 1 );
+ out->bv_len = len;
/* Fill in URI with replace string, replacing $i as we go */
n=1;
insert = 0;
- while( reg->offset[n] >= 0) {
+ while( off[n] >= 0) {
/* Paste in next section from replacement string (x,y,z above) */
- len = reg->offset[n] - reg->offset[n-1] - 2;
- strncpy( uri+insert, reg->replace + reg->offset[n-1] + 2, len);
+ len = off[n] - off[n-1] - 2;
+ strncpy( out->bv_val+insert, rep + off[n-1] + 2, len);
insert += len;
- if( reg->offset[n+1] < 0)
+ if( off[n+1] < 0)
break;
/* Paste in string from saslname that matched next $i (b,d above) */
- i = reg->replace[ reg->offset[n] + 1 ] - '0';
- len = reg->strings[i].rm_eo - reg->strings[i].rm_so;
- strncpy( uri+insert, saslname + reg->strings[i].rm_so, len );
+ i = rep[ off[n] + 1 ] - '0';
+ len = str[i].rm_eo - str[i].rm_so;
+ strncpy( out->bv_val+insert, saslname + str[i].rm_so, len );
insert += len;
n++;
}
- uri[insert] = '\0';
+ out->bv_val[insert] = '\0';
+}
+
+/* Take the passed in SASL name and attempt to convert it into an
+ LDAP URI to find the matching LDAP entry, using the pattern matching
+ strings given in the saslregexp config file directive(s) */
+
+static int slap_sasl_regexp( struct berval *in, struct berval *out )
+{
+ char *saslname = in->bv_val;
+ SaslRegexp_t *reg;
+ int i;
+
+ memset( out, 0, sizeof( *out ) );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_regexp: converting SASL name %s\n", saslname, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_sasl_regexp: converting SASL name %s\n",
+ saslname, 0, 0 );
+#endif
+
+ if (( saslname == NULL ) || ( nSaslRegexp == 0 ))
+ return( 0 );
+
+ /* Match the normalized SASL name to the saslregexp patterns */
+ for( reg = SaslRegexp,i=0; i<nSaslRegexp; i++,reg++ ) {
+ if ( regexec( ®->sr_workspace, saslname, SASLREGEX_REPLACE,
+ reg->sr_strings, 0) == 0 )
+ break;
+ }
+
+ if( i >= nSaslRegexp )
+ return( 0 );
+
+ /*
+ * The match pattern may have been of the form "a(b.*)c(d.*)e" and the
+ * replace pattern of the form "x$1y$2z". The returned string needs
+ * to replace the $1,$2 with the strings that matched (b.*) and (d.*)
+ */
+ slap_sasl_rx_exp( reg->sr_replace, reg->sr_offset,
+ reg->sr_strings, saslname, out );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_regexp: converted SASL name to %s\n",
+ out->bv_len ? out->bv_val : "", 0, 0 );
+#else
Debug( LDAP_DEBUG_TRACE,
- "slap_sasl_regexp: converted SASL name to %s\n", uri, 0, 0 );
- return( uri );
+ "slap_sasl_regexp: converted SASL name to %s\n",
+ out->bv_len ? out->bv_val : "", 0, 0 );
+#endif
+
+ return( 1 );
}
+/* Two empty callback functions to avoid sending results */
+void slap_cb_null_response( Connection *conn, Operation *o, ber_tag_t tag,
+ ber_int_t msgid, ber_int_t err, const char *matched,
+ const char *text, BerVarray ref, const char *resoid,
+ struct berval *resdata, struct berval *sasldata, LDAPControl **c)
+{
+}
+void slap_cb_null_sresult( Connection *conn, Operation *o, ber_int_t err,
+ const char *matched, const char *text, BerVarray refs, LDAPControl **c,
+ int nentries)
+{
+}
+/* This callback actually does some work...*/
+static int sasl_sc_sasl2dn( BackendDB *be, Connection *conn, Operation *o,
+ Entry *e, AttributeName *an, int ao, LDAPControl **c)
+{
+ struct berval *ndn = o->o_callback->sc_private;
+
+ /* We only want to be called once */
+ if( ndn->bv_val ) {
+ free(ndn->bv_val);
+ ndn->bv_val = NULL;
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, DETAIL1,
+ "slap_sasl2dn: search DN returned more than 1 entry\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "slap_sasl2dn: search DN returned more than 1 entry\n", 0,0,0 );
+#endif
+ return -1;
+ }
+ ber_dupbv(ndn, &e->e_nname);
+ return 0;
+}
/*
- * Given a SASL name (e.g. "UID=name+REALM=company,cn=GSSAPI,cn=AUTHZ")
+ * Given a SASL name (e.g. "UID=name,cn=REALM,cn=MECH,cn=AUTH")
* return the LDAP DN to which it matches. The SASL regexp rules in the config
* file turn the SASL name into an LDAP URI. If the URI is just a DN (or a
* search with scope=base), just return the URI (or its searchbase). Otherwise
* entry, return the DN of that one entry.
*/
-static
-char *slap_sasl2dn( char *saslname )
+void slap_sasl2dn( Connection *conn,
+ struct berval *saslname, struct berval *sasldn )
{
- char *uri=NULL, *searchbase=NULL, *DN=NULL;
- int rc, scope;
- Backend *be;
- Filter *filter=NULL;
- Connection *conn=NULL;
- LDAP *client=NULL;
- LDAPMessage *res=NULL, *msg;
-
+ int rc;
+ Backend *be = NULL;
+ struct berval dn = { 0, NULL };
+ int scope = LDAP_SCOPE_BASE;
+ Filter *filter = NULL;
+ slap_callback cb = {slap_cb_null_response, slap_cb_null_sresult, sasl_sc_sasl2dn, NULL};
+ Operation op = {0};
+ struct berval regout = { 0, NULL };
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl2dn: converting SASL name %s to DN.\n",
+ saslname->bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "==>slap_sasl2dn: "
+ "converting SASL name %s to a DN\n",
+ saslname->bv_val, 0,0 );
+#endif
- Debug( LDAP_DEBUG_TRACE,
- "==>slap_sasl2dn: Converting SASL name %s to a DN\n", saslname, 0,0 );
+ sasldn->bv_val = NULL;
+ sasldn->bv_len = 0;
+ cb.sc_private = sasldn;
- /* Convert the SASL name into an LDAP URI */
- uri = slap_sasl_regexp( saslname );
- if( uri == NULL )
+ /* Convert the SASL name into a minimal URI */
+ if( !slap_sasl_regexp( saslname, ®out ) ) {
goto FINISHED;
+ }
- rc = slap_parseURI( uri, &searchbase, &scope, &filter );
- if( rc )
+ rc = slap_parseURI( ®out, &dn, &scope, &filter );
+ if( rc != LDAP_SUCCESS ) {
goto FINISHED;
+ }
+
+ /* Must do an internal search */
+ be = select_backend( &dn, 0, 1 );
/* Massive shortcut: search scope == base */
if( scope == LDAP_SCOPE_BASE ) {
- DN = ch_strdup( searchbase );
+ *sasldn = dn;
+ dn.bv_len = 0;
+ dn.bv_val = NULL;
goto FINISHED;
}
- /* Must do an internal search */
-
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, DETAIL1,
+ "slap_sasl2dn: performing internal search (base=%s, scope=%d)\n",
+ dn.bv_val, scope, 0 );
+#else
Debug( LDAP_DEBUG_TRACE,
- "slap_sasl2dn: performing internal search (base=%s, scope=%d)\n",
- searchbase, scope, 0 );
-
- be = select_backend( searchbase );
- if(( be == NULL ) || ( be->be_search == NULL))
- goto FINISHED;
- searchbase = suffix_alias( be, searchbase );
-
- rc = connection_internal_open( &conn, &client, saslname );
- if( rc != LDAP_SUCCESS )
- goto FINISHED;
-
- (*be->be_search)( be, conn, conn->c_ops, /*base=*/NULL, searchbase,
- scope, /*deref=*/1, /*sizelimit=*/1, /*time=*/0, filter, /*fstr=*/NULL,
- /*attrs=*/NULL, /*attrsonly=*/0 );
-
-
- /* Read the client side of the internal search */
- rc = ldap_result( client, LDAP_RES_ANY, LDAP_MSG_ALL, NULL, &res );
- if( rc == -1 )
- goto FINISHED;
+ "slap_sasl2dn: performing internal search (base=%s, scope=%d)\n",
+ dn.bv_val, scope, 0 );
+#endif
- /* Make sure exactly one entry was returned */
- rc = ldap_count_entries( client, res );
- Debug( LDAP_DEBUG_TRACE,
- "slap_sasl2dn: search DN returned %d entries\n", rc,0,0 );
- if( rc != 1 )
+ if(( be == NULL ) || ( be->be_search == NULL)) {
goto FINISHED;
-
- msg = ldap_first_entry( client, res );
- DN = ldap_get_dn( client, msg );
-
+ }
+ suffix_alias( be, &dn );
+
+ op.o_tag = LDAP_REQ_SEARCH;
+ op.o_protocol = LDAP_VERSION3;
+ op.o_ndn = *saslname;
+ op.o_callback = &cb;
+ op.o_time = slap_get_time();
+ op.o_do_not_cache = 1;
+ op.o_threadctx = conn->c_sasl_bindop->o_threadctx;
+
+ (*be->be_search)( be, conn, &op, NULL, &dn,
+ scope, LDAP_DEREF_NEVER, 1, 0,
+ filter, NULL, NULL, 1 );
+
FINISHED:
- if( searchbase ) ch_free( searchbase );
+ if( sasldn->bv_len ) {
+ conn->c_authz_backend = be;
+ }
+ if( dn.bv_len ) ch_free( dn.bv_val );
if( filter ) filter_free( filter );
- if( uri ) ch_free( uri );
- if( conn ) connection_internal_close( conn );
- if( res ) ldap_msgfree( res );
- if( client ) ldap_unbind( client );
- if( DN ) dn_normalize( DN );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl2dn: Converted SASL name to %s\n",
+ sasldn->bv_len ? sasldn->bv_val : "<nothing>", 0, 0 );
+#else
Debug( LDAP_DEBUG_TRACE, "<==slap_sasl2dn: Converted SASL name to %s\n",
- DN ? DN : "<nothing>", 0, 0 );
- return( DN );
-}
+ sasldn->bv_len ? sasldn->bv_val : "<nothing>", 0, 0 );
+#endif
+ return;
+}
+typedef struct smatch_info {
+ struct berval *dn;
+ int match;
+} smatch_info;
+static int sasl_sc_smatch( BackendDB *be, Connection *conn, Operation *o,
+ Entry *e, AttributeName *an, int ao, LDAPControl **c)
+{
+ smatch_info *sm = o->o_callback->sc_private;
+ if (dn_match(sm->dn, &e->e_nname)) {
+ sm->match = 1;
+ return -1; /* short-circuit the search */
+ } else {
+ return 1;
+ }
+}
/*
* Map a SASL regexp rule to a DN. If the rule is just a DN or a scope=base
* URI, just strcmp the rule (or its searchbase) to the *assertDN. Otherwise,
* the rule must be used as an internal search for entries. If that search
* returns the *assertDN entry, the match is successful.
+ *
+ * The assertDN should not have the dn: prefix
*/
static
-int slap_sasl_match( char *rule, char *assertDN, char *authc )
+int slap_sasl_match(Connection *conn, struct berval *rule, struct berval *assertDN, struct berval *authc )
{
- char *searchbase=NULL, *dn=NULL;
+ struct berval searchbase = {0, NULL};
int rc, scope;
Backend *be;
Filter *filter=NULL;
- Connection *conn=NULL;
- LDAP *client=NULL;
- LDAPMessage *res=NULL, *msg;
-
-
+ regex_t reg;
+ smatch_info sm;
+ slap_callback cb = { slap_cb_null_response, slap_cb_null_sresult, sasl_sc_smatch, NULL };
+ Operation op = {0};
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_match: comparing DN %s to rule %s\n",
+ assertDN->bv_val, rule->bv_val,0 );
+#else
Debug( LDAP_DEBUG_TRACE,
- "===>slap_sasl_match: comparing DN %s to rule %s\n", assertDN, rule, 0 );
+ "===>slap_sasl_match: comparing DN %s to rule %s\n", assertDN->bv_val, rule->bv_val, 0 );
+#endif
rc = slap_parseURI( rule, &searchbase, &scope, &filter );
if( rc != LDAP_SUCCESS )
/* Massive shortcut: search scope == base */
if( scope == LDAP_SCOPE_BASE ) {
- dn_normalize( searchbase );
- if( strcmp( searchbase, assertDN ) == 0 )
+ rc = regcomp(®, searchbase.bv_val,
+ REG_EXTENDED|REG_ICASE|REG_NOSUB);
+ if ( rc == 0 ) {
+ rc = regexec(®, assertDN->bv_val, 0, NULL, 0);
+ regfree( ® );
+ }
+ if ( rc == 0 )
rc = LDAP_SUCCESS;
else
rc = LDAP_INAPPROPRIATE_AUTH;
/* Must run an internal search. */
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, DETAIL1,
+ "slap_sasl_match: performing internal search (base=%s, scope=%d)\n",
+ searchbase.bv_val, scope,0 );
+#else
Debug( LDAP_DEBUG_TRACE,
"slap_sasl_match: performing internal search (base=%s, scope=%d)\n",
- searchbase, scope, 0 );
+ searchbase.bv_val, scope, 0 );
+#endif
- be = select_backend( searchbase );
+ be = select_backend( &searchbase, 0, 1 );
if(( be == NULL ) || ( be->be_search == NULL)) {
rc = LDAP_INAPPROPRIATE_AUTH;
goto CONCLUDED;
}
- searchbase = suffix_alias( be, searchbase );
+ suffix_alias( be, &searchbase );
- /* Make an internal connection on which to run the search */
- rc = connection_internal_open( &conn, &client, authc );
- if( rc != LDAP_SUCCESS )
- goto CONCLUDED;
+ sm.dn = assertDN;
+ sm.match = 0;
+ cb.sc_private = &sm;
+
+ op.o_tag = LDAP_REQ_SEARCH;
+ op.o_protocol = LDAP_VERSION3;
+ op.o_ndn = *authc;
+ op.o_callback = &cb;
+ op.o_time = slap_get_time();
+ op.o_do_not_cache = 1;
+ op.o_threadctx = conn->c_sasl_bindop->o_threadctx;
- (*be->be_search)( be, conn, conn->c_ops, /*base=*/NULL, searchbase,
+ (*be->be_search)( be, conn, &op, /*base=*/NULL, &searchbase,
scope, /*deref=*/1, /*sizelimit=*/0, /*time=*/0, filter, /*fstr=*/NULL,
/*attrs=*/NULL, /*attrsonly=*/0 );
-
- /* On the client side of the internal search, read the results. Check
- if the assertDN matches any of the DN's returned by the search */
- rc = ldap_result( client, LDAP_RES_ANY, LDAP_MSG_ALL, NULL, &res );
- if( rc == -1 )
- goto CONCLUDED;
-
- for( msg=ldap_first_entry( client, res );
- msg;
- msg=ldap_next_entry( client, msg ) ) {
- dn = ldap_get_dn( client, msg );
- dn_normalize( dn );
- rc = strcmp( dn, assertDN );
- ch_free( dn );
- if( rc == 0 ) {
- rc = LDAP_SUCCESS;
- goto CONCLUDED;
- }
- }
- rc = LDAP_INAPPROPRIATE_AUTH;
+ if (sm.match)
+ rc = LDAP_SUCCESS;
+ else
+ rc = LDAP_INAPPROPRIATE_AUTH;
CONCLUDED:
- if( searchbase ) ch_free( searchbase );
+ if( searchbase.bv_len ) ch_free( searchbase.bv_val );
if( filter ) filter_free( filter );
- if( conn ) connection_internal_close( conn );
- if( res ) ldap_msgfree( res );
- if( client ) ldap_unbind( client );
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_match: comparison returned %d\n", rc, 0, 0 );
+#else
Debug( LDAP_DEBUG_TRACE,
"<===slap_sasl_match: comparison returned %d\n", rc, 0, 0);
+#endif
+
return( rc );
}
-
-
-
/*
* This function answers the question, "Can this ID authorize to that ID?",
* based on authorization rules. The rules are stored in the *searchDN, in the
* attribute named by *attr. If any of those rules map to the *assertDN, the
* authorization is approved.
+ *
+ * The DNs should not have the dn: prefix
*/
-
static int
-slap_sasl_check_authz(char *searchDN, char *assertDN, char *attr, char *authc)
+slap_sasl_check_authz( Connection *conn,
+ struct berval *searchDN,
+ struct berval *assertDN,
+ AttributeDescription *ad,
+ struct berval *authc )
{
- const char *errmsg;
int i, rc;
- struct berval **vals=NULL;
- AttributeDescription *ad=NULL;
-
+ BerVarray vals=NULL;
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_check_authz: does %s match %s rule in %s?\n",
+ assertDN->bv_val, ad->ad_cname.bv_val, searchDN->bv_val);
+#else
Debug( LDAP_DEBUG_TRACE,
"==>slap_sasl_check_authz: does %s match %s rule in %s?\n",
- assertDN, attr, searchDN);
- rc = slap_str2ad( attr, &ad, &errmsg );
- if( rc != LDAP_SUCCESS )
- goto COMPLETE;
+ assertDN->bv_val, ad->ad_cname.bv_val, searchDN->bv_val);
+#endif
- rc = backend_attribute( NULL, NULL, NULL, NULL, searchDN, ad, &vals );
+ rc = backend_attribute( NULL, NULL, conn->c_sasl_bindop, NULL, searchDN, ad, &vals );
if( rc != LDAP_SUCCESS )
goto COMPLETE;
/* Check if the *assertDN matches any **vals */
- for( i=0; vals[i] != NULL; i++ ) {
- rc = slap_sasl_match( vals[i]->bv_val, assertDN, authc );
+ for( i=0; vals[i].bv_val != NULL; i++ ) {
+ rc = slap_sasl_match( conn, &vals[i], assertDN, authc );
if ( rc == LDAP_SUCCESS )
goto COMPLETE;
}
rc = LDAP_INAPPROPRIATE_AUTH;
COMPLETE:
- if( vals ) ber_bvecfree( vals );
- if( ad ) ad_free( ad, 1 );
+ if( vals ) ber_bvarray_free( vals );
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, RESULTS,
+ "slap_sasl_check_authz: %s check returning %s\n",
+ ad->ad_cname.bv_val, rc, 0 );
+#else
Debug( LDAP_DEBUG_TRACE,
- "<==slap_sasl_check_authz: %s check returning %d\n", attr, rc, 0);
+ "<==slap_sasl_check_authz: %s check returning %d\n", ad->ad_cname.bv_val, rc, 0);
+#endif
+
return( rc );
}
+#endif /* HAVE_CYRUS_SASL */
+/* Check if a bind can SASL authorize to another identity.
+ * The DNs should not have the dn: prefix
+ */
-#endif /* HAVE_CYRUS_SASL */
-
-
-
-
-
-/* Check if a bind can SASL authorize to another identity. */
-
-int slap_sasl_authorized( Connection *conn, char *authcid, char *authzid )
+int slap_sasl_authorized( Connection *conn,
+ struct berval *authcDN, struct berval *authzDN )
{
- int rc;
- char *saslname=NULL,*authcDN=NULL,*realm=NULL, *authzDN=NULL;
+ int rc = LDAP_INAPPROPRIATE_AUTH;
#ifdef HAVE_CYRUS_SASL
- Debug( LDAP_DEBUG_TRACE,
- "==>slap_sasl_authorized: can %s become %s?\n", authcid, authzid, 0 );
-
- /* Create a complete SASL name for the SASL regexp patterns */
-
- sasl_getprop( conn->c_sasl_context, SASL_REALM, (void **)&realm );
-
- /* Allocate space */
- rc = strlen("uid=+realm=,cn=,cn=AUTHZ ");
- if ( realm ) rc += strlen( realm );
- if ( authcid ) rc += strlen( authcid );
- rc += strlen( conn->c_sasl_bind_mech );
- saslname = ch_malloc( rc );
-
- /* Build the SASL name with whatever we have, and normalize it */
- saslname[0] = '\0';
- rc = 0;
- if ( authcid )
- rc += sprintf( saslname+rc, "%sUID=%s", rc?",":"", authcid);
- if ( realm )
- rc += sprintf( saslname+rc, "%sREALM=%s", rc?"+":"", realm);
- if ( conn->c_sasl_bind_mech )
- rc += sprintf( saslname+rc, "%sCN=%s", rc?",":"",
- conn->c_sasl_bind_mech);
- sprintf( saslname+rc, "%sCN=AUTHZ", rc?",":"");
- dn_normalize( saslname );
-
- authcDN = slap_sasl2dn( saslname );
- if( authcDN == NULL )
+ /* User binding as anonymous */
+ if ( authzDN == NULL ) {
+ rc = LDAP_SUCCESS;
goto DONE;
+ }
- /* Normalize the name given by the clientside of the connection */
- authzDN = ch_strdup( authzid );
- dn_normalize( authzDN );
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_authorized: can %s become %s?\n",
+ authcDN->bv_val, authzDN->bv_val, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "==>slap_sasl_authorized: can %s become %s?\n", authcDN->bv_val, authzDN->bv_val, 0 );
+#endif
+ /* If person is authorizing to self, succeed */
+ if ( dn_match( authcDN, authzDN ) ) {
+ rc = LDAP_SUCCESS;
+ goto DONE;
+ }
/* Check source rules */
- rc = slap_sasl_check_authz( authcDN, authzDN, SASL_AUTHZ_SOURCE_ATTR,
- authcDN );
- if( rc == LDAP_SUCCESS )
- goto DONE;
+ if( authz_policy & SASL_AUTHZ_TO ) {
+ rc = slap_sasl_check_authz( conn, authcDN, authzDN,
+ slap_schema.si_ad_saslAuthzTo, authcDN );
+ if( rc == LDAP_SUCCESS ) {
+ goto DONE;
+ }
+ }
/* Check destination rules */
- rc = slap_sasl_check_authz( authzDN, authcDN, SASL_AUTHZ_DEST_ATTR,
- authcDN );
- if( rc == LDAP_SUCCESS )
- goto DONE;
+ if( authz_policy & SASL_AUTHZ_FROM ) {
+ rc = slap_sasl_check_authz( conn, authzDN, authcDN,
+ slap_schema.si_ad_saslAuthzFrom, authcDN );
+ if( rc == LDAP_SUCCESS ) {
+ goto DONE;
+ }
+ }
-#endif
rc = LDAP_INAPPROPRIATE_AUTH;
DONE:
- if( saslname ) ch_free( saslname );
- if( authcDN ) ch_free( authcDN );
- if( authzDN ) ch_free( authzDN );
- Debug( LDAP_DEBUG_TRACE, "<== slap_sasl_authorized: return %d\n",rc,0,0 );
+#endif
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, RESULTS, "slap_sasl_authorized: return %d\n", rc,0,0 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "<== slap_sasl_authorized: return %d\n", rc, 0, 0 );
+#endif
+
return( rc );
}