X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=servers%2Fslapd%2Fsaslauthz.c;h=001c0ecdb0935eb941f20a96f72d5526e673cad9;hb=4a107089d82ecdaca788fc6ecdef34d3d4fc19df;hp=b5d1d7b38c6ea41571a2713eccb566b15c6b79a2;hpb=b4629f1e79ddfbefd68e7c2e88478873e67319fb;p=openldap diff --git a/servers/slapd/saslauthz.c b/servers/slapd/saslauthz.c index b5d1d7b38c..001c0ecdb0 100644 --- a/servers/slapd/saslauthz.c +++ b/servers/slapd/saslauthz.c @@ -1,7 +1,7 @@ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * - * Copyright 1998-2003 The OpenLDAP Foundation. + * Copyright 1998-2005 The OpenLDAP Foundation. * Portions Copyright 2000 Mark Adamson, Carnegie Mellon. * All rights reserved. * @@ -17,15 +17,17 @@ #include "portable.h" #include +#ifdef HAVE_LIMITS_H +#include +#endif #include #include +#include #include "slap.h" -#include - -#include +#include "lutil.h" #define SASLREGEX_REPLACE 10 @@ -33,6 +35,9 @@ #define LDAP_X_SCOPE_REGEX ((ber_int_t) 0x0020) #define LDAP_X_SCOPE_CHILDREN ((ber_int_t) 0x0030) #define LDAP_X_SCOPE_SUBTREE ((ber_int_t) 0x0040) +#define LDAP_X_SCOPE_ONELEVEL ((ber_int_t) 0x0050) +#define LDAP_X_SCOPE_GROUP ((ber_int_t) 0x0060) +#define LDAP_X_SCOPE_USERS ((ber_int_t) 0x0070) /* * IDs in DNauthzid form can now have a type specifier, that @@ -43,7 +48,7 @@ * dn.exact: the value must pass normalization and is used * in exact DN match. * dn.regex: the value is treated as a regular expression - * in matching DN values in saslAuthz{To|From} + * in matching DN values in authz{To|From} * attributes. * dn: for backwards compatibility reasons, the value * is treated as a regular expression, and thus @@ -71,13 +76,28 @@ typedef struct sasl_regexp { static int nSaslRegexp = 0; static SaslRegexp_t *SaslRegexp = NULL; +#ifdef SLAP_AUTH_REWRITE +#include "rewrite.h" +struct rewrite_info *sasl_rwinfo = NULL; +#define AUTHID_CONTEXT "authid" +#endif /* SLAP_AUTH_REWRITE */ + /* What SASL proxy authorization policies are allowed? */ -#define SASL_AUTHZ_NONE 0 -#define SASL_AUTHZ_FROM 1 -#define SASL_AUTHZ_TO 2 +#define SASL_AUTHZ_NONE 0x00 +#define SASL_AUTHZ_FROM 0x01 +#define SASL_AUTHZ_TO 0x02 +#define SASL_AUTHZ_AND 0x10 + +static const char *policy_txt[] = { + "none", "from", "to", "any" +}; static int authz_policy = SASL_AUTHZ_NONE; +static +int slap_sasl_match( Operation *opx, struct berval *rule, + struct berval *assertDN, struct berval *authc ); + int slap_sasl_setpolicy( const char *arg ) { int rc = LDAP_SUCCESS; @@ -88,21 +108,31 @@ int slap_sasl_setpolicy( const char *arg ) authz_policy = SASL_AUTHZ_FROM; } else if ( strcasecmp( arg, "to" ) == 0 ) { authz_policy = SASL_AUTHZ_TO; - } else if ( strcasecmp( arg, "both" ) == 0 ) { + } else if ( strcasecmp( arg, "both" ) == 0 || strcasecmp( arg, "any" ) == 0 ) { authz_policy = SASL_AUTHZ_FROM | SASL_AUTHZ_TO; + } else if ( strcasecmp( arg, "all" ) == 0 ) { + authz_policy = SASL_AUTHZ_FROM | SASL_AUTHZ_TO | SASL_AUTHZ_AND; } else { rc = LDAP_OTHER; } return rc; } +const char * slap_sasl_getpolicy() +{ + if ( authz_policy == (SASL_AUTHZ_FROM | SASL_AUTHZ_TO | SASL_AUTHZ_AND) ) + return "all"; + else + return policy_txt[authz_policy]; +} + int slap_parse_user( struct berval *id, struct berval *user, struct berval *realm, struct berval *mech ) { char u; assert( id ); - assert( id->bv_val ); + assert( !BER_BVISNULL( id ) ); assert( user ); assert( realm ); assert( mech ); @@ -119,7 +149,7 @@ int slap_parse_user( struct berval *id, struct berval *user, */ user->bv_val = strchr( id->bv_val, ':' ); - if ( user->bv_val == NULL ) { + if ( BER_BVISNULL( user ) ) { return LDAP_PROTOCOL_ERROR; } user->bv_val[ 0 ] = '\0'; @@ -127,13 +157,15 @@ int slap_parse_user( struct berval *id, struct berval *user, user->bv_len = id->bv_len - ( user->bv_val - id->bv_val ); mech->bv_val = strchr( id->bv_val, '.' ); - if ( mech->bv_val != NULL ) { + if ( !BER_BVISNULL( mech ) ) { mech->bv_val[ 0 ] = '\0'; mech->bv_val++; - realm->bv_val = strchr( id->bv_val, '/' ); + realm->bv_val = strchr( mech->bv_val, '/' ); - if ( realm->bv_val ) { + if ( !BER_BVISNULL( realm ) ) { + realm->bv_val[ 0 ] = '\0'; + realm->bv_val++; mech->bv_len = realm->bv_val - mech->bv_val - 1; realm->bv_len = user->bv_val - realm->bv_val - 1; } else { @@ -141,21 +173,21 @@ int slap_parse_user( struct berval *id, struct berval *user, } } else { - realm->bv_val = NULL; + BER_BVZERO( realm ); } if ( id->bv_val[ 1 ] != '\0' ) { return LDAP_PROTOCOL_ERROR; } - if ( mech->bv_val != NULL ) { + if ( !BER_BVISNULL( mech ) ) { assert( mech->bv_val == id->bv_val + 2 ); AC_MEMCPY( mech->bv_val - 2, mech->bv_val, mech->bv_len + 1 ); mech->bv_val -= 2; } - if ( realm->bv_val ) { + if ( !BER_BVISNULL( realm ) ) { assert( realm->bv_val >= id->bv_val + 2 ); AC_MEMCPY( realm->bv_val - 2, realm->bv_val, realm->bv_len + 1 ); @@ -179,66 +211,77 @@ static int slap_parseURI( Operation *op, struct berval *uri, int rc; LDAPURLDesc *ludp; - assert( uri != NULL && uri->bv_val != NULL ); - base->bv_val = NULL; - base->bv_len = 0; - nbase->bv_val = NULL; - nbase->bv_len = 0; - fstr->bv_val = NULL; - fstr->bv_len = 0; + assert( uri != NULL && !BER_BVISNULL( uri ) ); + BER_BVZERO( base ); + BER_BVZERO( nbase ); + BER_BVZERO( fstr ); *scope = -1; *filter = NULL; -#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 rc = LDAP_PROTOCOL_ERROR; - if ( !strncasecmp( uri->bv_val, "dn", sizeof( "dn" ) - 1 ) ) { - bv.bv_val = uri->bv_val + sizeof( "dn" ) - 1; + /* + * dn[.]: + * ::= {exact|regex|children|subtree|onelevel} + * + * defaults to "exact" + * if is not "regex", must pass DN normalization + */ + if ( !strncasecmp( uri->bv_val, "dn", STRLENOF( "dn" ) ) ) { + bv.bv_val = uri->bv_val + STRLENOF( "dn" ); if ( bv.bv_val[ 0 ] == '.' ) { bv.bv_val++; - if ( !strncasecmp( bv.bv_val, "exact:", sizeof( "exact:" ) - 1 ) ) { - bv.bv_val += sizeof( "exact" ) - 1; + if ( !strncasecmp( bv.bv_val, "exact:", STRLENOF( "exact:" ) ) ) { + bv.bv_val += STRLENOF( "exact:" ); *scope = LDAP_X_SCOPE_EXACT; - } else if ( !strncasecmp( bv.bv_val, "regex:", sizeof( "regex:" ) - 1 ) ) { - bv.bv_val += sizeof( "regex" ) - 1; + } else if ( !strncasecmp( bv.bv_val, "regex:", STRLENOF( "regex:" ) ) ) { + bv.bv_val += STRLENOF( "regex:" ); *scope = LDAP_X_SCOPE_REGEX; - } else if ( !strncasecmp( bv.bv_val, "children:", sizeof( "chldren:" ) - 1 ) ) { - bv.bv_val += sizeof( "children" ) - 1; + } else if ( !strncasecmp( bv.bv_val, "children:", STRLENOF( "children:" ) ) ) { + bv.bv_val += STRLENOF( "children:" ); *scope = LDAP_X_SCOPE_CHILDREN; - } else if ( !strncasecmp( bv.bv_val, "subtree:", sizeof( "subtree:" ) - 1 ) ) { - bv.bv_val += sizeof( "subtree" ) - 1; + } else if ( !strncasecmp( bv.bv_val, "subtree:", STRLENOF( "subtree:" ) ) ) { + bv.bv_val += STRLENOF( "subtree:" ); *scope = LDAP_X_SCOPE_SUBTREE; + } else if ( !strncasecmp( bv.bv_val, "onelevel:", STRLENOF( "onelevel:" ) ) ) { + bv.bv_val += STRLENOF( "onelevel:" ); + *scope = LDAP_X_SCOPE_ONELEVEL; + } else { return LDAP_PROTOCOL_ERROR; } - } - if ( bv.bv_val[ 0 ] != ':' ) { - return LDAP_PROTOCOL_ERROR; + } else { + if ( bv.bv_val[ 0 ] != ':' ) { + return LDAP_PROTOCOL_ERROR; + } + *scope = LDAP_X_SCOPE_EXACT; + bv.bv_val++; } - bv.bv_val++; bv.bv_val += strspn( bv.bv_val, " " ); /* jump here in case no type specification was present - * and uir was not an URI... HEADS-UP: assuming EXACT */ + * and uri was not an URI... HEADS-UP: assuming EXACT */ is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val); + /* a single '*' means any DN without using regexes */ + if ( ber_bvccmp( &bv, '*' ) ) { + *scope = LDAP_X_SCOPE_USERS; + } + switch ( *scope ) { case LDAP_X_SCOPE_EXACT: case LDAP_X_SCOPE_CHILDREN: case LDAP_X_SCOPE_SUBTREE: + case LDAP_X_SCOPE_ONELEVEL: rc = dnNormalize( 0, NULL, NULL, &bv, nbase, op->o_tmpmemctx ); if( rc != LDAP_SUCCESS ) { *scope = -1; @@ -247,6 +290,8 @@ is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val); case LDAP_X_SCOPE_REGEX: ber_dupbv_x( nbase, &bv, op->o_tmpmemctx ); + + case LDAP_X_SCOPE_USERS: rc = LDAP_SUCCESS; break; @@ -257,6 +302,9 @@ is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val); return rc; + /* + * u: + */ } else if ( ( uri->bv_val[ 0 ] == 'u' || uri->bv_val[ 0 ] == 'U' ) && ( uri->bv_val[ 1 ] == ':' || uri->bv_val[ 1 ] == '/' @@ -264,15 +312,17 @@ is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val); { Connection c = *op->o_conn; char buf[ SLAP_LDAPDN_MAXLEN ]; - struct berval id = { uri->bv_len, (char *)buf }, - user = { 0, NULL }, - realm = { 0, NULL }, - mech = { 0, NULL }; + struct berval id, + user = BER_BVNULL, + realm = BER_BVNULL, + mech = BER_BVNULL; if ( sizeof( buf ) <= uri->bv_len ) { return LDAP_INVALID_SYNTAX; } + id.bv_len = uri->bv_len; + id.bv_val = buf; strncpy( buf, uri->bv_val, sizeof( buf ) ); rc = slap_parse_user( &id, &user, &realm, &mech ); @@ -280,14 +330,13 @@ is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val); return rc; } - if ( mech.bv_val ) { + if ( !BER_BVISNULL( &mech ) ) { c.c_sasl_bind_mech = mech; } else { - c.c_sasl_bind_mech.bv_val = "AUTHZ"; - c.c_sasl_bind_mech.bv_len = sizeof( "AUTHZ" ) - 1; + BER_BVSTR( &c.c_sasl_bind_mech, "AUTHZ" ); } - rc = slap_sasl_getdn( &c, op, user.bv_val, user.bv_len, + rc = slap_sasl_getdn( &c, op, &user, realm.bv_val, nbase, SLAP_GETDN_AUTHZID ); if ( rc == LDAP_SUCCESS ) { @@ -295,21 +344,116 @@ is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val); } return rc; - } + + /* + * group[/[/]]: + * + * groupoc defaults to "groupOfNames" + * groupat defaults to "member" + * + * must pass DN normalization + */ + } else if ( strncasecmp( uri->bv_val, "group", STRLENOF( "group" ) ) == 0 ) + { + struct berval group_dn = BER_BVNULL, + group_oc = BER_BVNULL, + member_at = BER_BVNULL; + char *tmp; + + bv.bv_val = uri->bv_val + STRLENOF( "group" ); + group_dn.bv_val = strchr( bv.bv_val, ':' ); + if ( group_dn.bv_val == NULL ) { + /* last chance: assume it's a(n exact) DN ... */ + bv.bv_val = uri->bv_val; + *scope = LDAP_X_SCOPE_EXACT; + goto is_dn; + } + if ( bv.bv_val[ 0 ] == '/' ) { + group_oc.bv_val = &bv.bv_val[ 1 ]; + + member_at.bv_val = strchr( group_oc.bv_val, '/' ); + if ( member_at.bv_val ) { + group_oc.bv_len = member_at.bv_val - group_oc.bv_val; + member_at.bv_val++; + member_at.bv_len = group_dn.bv_val - member_at.bv_val; + + } else { + group_oc.bv_len = group_dn.bv_val - group_oc.bv_val; + BER_BVSTR( &member_at, "member" ); + } + + } else { + BER_BVSTR( &group_oc, "groupOfNames" ); + } + group_dn.bv_val++; + group_dn.bv_len = uri->bv_len - ( group_dn.bv_val - uri->bv_val ); + + rc = dnNormalize( 0, NULL, NULL, &group_dn, nbase, op->o_tmpmemctx ); + if ( rc != LDAP_SUCCESS ) { + *scope = -1; + return rc; + } + *scope = LDAP_X_SCOPE_GROUP; + + /* FIXME: caller needs to add value of member attribute + * and close brackets twice */ + fstr->bv_len = STRLENOF( "(&(objectClass=)(=" /* )) */ ) + + group_oc.bv_len + member_at.bv_len; + fstr->bv_val = ch_malloc( fstr->bv_len + 1 ); + + tmp = lutil_strncopy( fstr->bv_val, "(&(objectClass=" /* )) */ , + STRLENOF( "(&(objectClass=" /* )) */ ) ); + tmp = lutil_strncopy( tmp, group_oc.bv_val, group_oc.bv_len ); + tmp = lutil_strncopy( tmp, /* ( */ ")(" /* ) */ , + STRLENOF( /* ( */ ")(" /* ) */ ) ); + tmp = lutil_strncopy( tmp, member_at.bv_val, member_at.bv_len ); + tmp = lutil_strncopy( tmp, "=", STRLENOF( "=" ) ); + + return rc; + } + + /* + * ldap:///??? + * ::= {base|one|subtree} + * + * defaults to "base" + * must pass DN normalization + * must pass str2filter() + */ rc = ldap_url_parse( uri->bv_val, &ludp ); - if ( rc == LDAP_URL_ERR_BADSCHEME ) { - /* last chance: assume it's a(n exact) DN ... */ + switch ( rc ) { + case LDAP_URL_SUCCESS: + /* FIXME: the check is pedantic, but I think it's necessary, + * because people tend to use things like ldaps:// which + * gives the idea SSL is being used. Maybe we could + * accept ldapi:// as well, but the point is that we use + * an URL as an easy means to define bits of a search with + * little parsing. + */ + if ( strcasecmp( ludp->lud_scheme, "ldap" ) != 0 ) { + /* + * must be ldap:/// + */ + return LDAP_PROTOCOL_ERROR; + } + break; + + case LDAP_URL_ERR_BADSCHEME: + /* + * last chance: assume it's a(n exact) DN ... + * + * NOTE: must pass DN normalization + */ bv.bv_val = uri->bv_val; *scope = LDAP_X_SCOPE_EXACT; goto is_dn; - } - if ( rc != LDAP_URL_SUCCESS ) { + default: return LDAP_PROTOCOL_ERROR; } - if (( ludp->lud_host && *ludp->lud_host ) + if ( ( ludp->lud_host && *ludp->lud_host ) || ludp->lud_attrs || ludp->lud_exts ) { /* host part must be empty */ @@ -338,10 +482,8 @@ is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val); done: if( rc != LDAP_SUCCESS ) { if( *filter ) filter_free_x( op, *filter ); - base->bv_val = NULL; - base->bv_len = 0; - fstr->bv_val = NULL; - fstr->bv_len = 0; + BER_BVZERO( base ); + BER_BVZERO( fstr ); } else { /* Don't free these, return them to caller */ ludp->lud_filter = NULL; @@ -367,16 +509,10 @@ static int slap_sasl_rx_off(char *rep, int *off) } 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", rep, SASLREGEX_REPLACE, 0 ); -#endif return( LDAP_OTHER ); } @@ -392,6 +528,81 @@ static int slap_sasl_rx_off(char *rep, int *off) return( LDAP_SUCCESS ); } +#ifdef SLAP_AUTH_REWRITE +int slap_sasl_rewrite_config( + const char *fname, + int lineno, + int argc, + char **argv +) +{ + int rc; + char *savearg0; + + /* init at first call */ + if ( sasl_rwinfo == NULL ) { + sasl_rwinfo = rewrite_info_init( REWRITE_MODE_USE_DEFAULT ); + } + + /* strip "authid-" prefix for parsing */ + savearg0 = argv[0]; + argv[0] += STRLENOF( "authid-" ); + rc = rewrite_parse( sasl_rwinfo, fname, lineno, argc, argv ); + argv[0] = savearg0; + + return rc; +} + +int slap_sasl_rewrite_destroy( void ) +{ + if ( sasl_rwinfo ) { + rewrite_info_delete( &sasl_rwinfo ); + sasl_rwinfo = NULL; + } + + return 0; +} + +int slap_sasl_regexp_rewrite_config( + const char *fname, + int lineno, + const char *match, + const char *replace, + const char *context ) +{ + int rc; + char *argvRule[] = { "rewriteRule", NULL, NULL, ":@", NULL }; + + /* init at first call */ + if ( sasl_rwinfo == NULL ) { + char *argvEngine[] = { "rewriteEngine", "on", NULL }; + char *argvContext[] = { "rewriteContext", NULL, NULL }; + + /* initialize rewrite engine */ + sasl_rwinfo = rewrite_info_init( REWRITE_MODE_USE_DEFAULT ); + + /* switch on rewrite engine */ + rc = rewrite_parse( sasl_rwinfo, fname, lineno, 2, argvEngine ); + if (rc != LDAP_SUCCESS) { + return rc; + } + + /* create generic authid context */ + argvContext[1] = AUTHID_CONTEXT; + rc = rewrite_parse( sasl_rwinfo, fname, lineno, 2, argvContext ); + if (rc != LDAP_SUCCESS) { + return rc; + } + } + + argvRule[1] = (char *)match; + argvRule[2] = (char *)replace; + rc = rewrite_parse( sasl_rwinfo, fname, lineno, 4, argvRule ); + + return rc; +} +#endif /* SLAP_AUTH_REWRITE */ + int slap_sasl_regexp_config( const char *match, const char *replace ) { int rc; @@ -405,18 +616,19 @@ int slap_sasl_regexp_config( const char *match, const char *replace ) reg->sr_match = ch_strdup( match ); reg->sr_replace = ch_strdup( replace ); +#ifdef SLAP_AUTH_REWRITE + rc = slap_sasl_regexp_rewrite_config( "sasl-regexp", 0, + match, replace, AUTHID_CONTEXT ); + if ( rc == LDAP_SUCCESS ) nSaslRegexp++; + return rc; +#else /* ! SLAP_AUTH_REWRITE */ + /* 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 ); } @@ -426,8 +638,37 @@ int slap_sasl_regexp_config( const char *match, const char *replace ) nSaslRegexp++; return( LDAP_SUCCESS ); +#endif /* ! SLAP_AUTH_REWRITE */ } +void slap_sasl_regexp_unparse( BerVarray *out ) +{ + int i; + struct berval bv; + BerVarray bva = NULL; + char ibuf[32], *ptr; + struct berval idx; + + if ( !nSaslRegexp ) return; + + idx.bv_val = ibuf; + bva = ch_malloc( (nSaslRegexp+1) * sizeof(struct berval) ); + BER_BVZERO(bva+nSaslRegexp); + for ( i=0; ibv_val = sl_malloc( len + 1, ctx ); + out->bv_val = slap_sl_malloc( len + 1, ctx ); out->bv_len = len; /* Fill in URI with replace string, replacing $i as we go */ @@ -485,8 +726,43 @@ static void slap_sasl_rx_exp( 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, void *ctx ) +static int slap_authz_regexp( struct berval *in, struct berval *out, + int flags, void *ctx ) { +#ifdef SLAP_AUTH_REWRITE + const char *context = AUTHID_CONTEXT; + + if ( sasl_rwinfo == NULL || BER_BVISNULL( in ) ) { + return 0; + } + + /* FIXME: if aware of authc/authz mapping, + * we could use different contexts ... */ + switch ( rewrite_session( sasl_rwinfo, context, in->bv_val, NULL, + &out->bv_val ) ) + { + case REWRITE_REGEXEC_OK: + if ( !BER_BVISNULL( out ) ) { + char *val = out->bv_val; + ber_str2bv_x( val, 0, 1, out, ctx ); + if ( val != in->bv_val ) { + free( val ); + } + } else { + ber_dupbv_x( out, in, ctx ); + } + Debug( LDAP_DEBUG_ARGS, + "[rw] %s: \"%s\" -> \"%s\"\n", + context, in->bv_val, out->bv_val ); + return 1; + + case REWRITE_REGEXEC_UNWILLING: + case REWRITE_REGEXEC_ERR: + default: + return 0; + } + +#else /* ! SLAP_AUTH_REWRITE */ char *saslname = in->bv_val; SaslRegexp_t *reg; regmatch_t sr_strings[SASLREGEX_REPLACE]; /* strings matching $1,$2 ... */ @@ -494,13 +770,8 @@ static int slap_sasl_regexp( struct berval *in, struct berval *out, void *ctx ) 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", + Debug( LDAP_DEBUG_TRACE, "slap_authz_regexp: converting SASL name %s\n", saslname, 0, 0 ); -#endif if (( saslname == NULL ) || ( nSaslRegexp == 0 )) { return( 0 ); @@ -523,17 +794,12 @@ static int slap_sasl_regexp( struct berval *in, struct berval *out, void *ctx ) slap_sasl_rx_exp( reg->sr_replace, reg->sr_offset, sr_strings, saslname, out, ctx ); -#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", - out->bv_len ? out->bv_val : "", 0, 0 ); -#endif + "slap_authz_regexp: converted SASL name to %s\n", + BER_BVISEMPTY( out ) ? "" : out->bv_val, 0, 0 ); return( 1 ); +#endif /* ! SLAP_AUTH_REWRITE */ } /* This callback actually does some work...*/ @@ -544,17 +810,12 @@ static int sasl_sc_sasl2dn( Operation *o, SlapReply *rs ) if (rs->sr_type != REP_SEARCH) return 0; /* We only want to be called once */ - if( ndn->bv_val ) { + if ( !BER_BVISNULL( ndn ) ) { o->o_tmpfree(ndn->bv_val, o->o_tmpmemctx); - ndn->bv_val = NULL; + BER_BVZERO( ndn ); -#ifdef NEW_LOGGING - LDAP_LOG( TRANSPORT, DETAIL1, - "slap_sc_sasl2dn: search DN returned more than 1 entry\n", 0, 0, 0 ); -#else Debug( LDAP_DEBUG_TRACE, "slap_sc_sasl2dn: search DN returned more than 1 entry\n", 0, 0, 0 ); -#endif return -1; } @@ -572,14 +833,44 @@ static int sasl_sc_smatch( Operation *o, SlapReply *rs ) { smatch_info *sm = o->o_callback->sc_private; - if (rs->sr_type != REP_SEARCH) return 0; + if ( rs->sr_type != REP_SEARCH ) { + if ( rs->sr_err != LDAP_SUCCESS ) { + sm->match = -1; + } + return 0; + } + + if ( sm->match == 1 ) { + sm->match = -1; + return 0; + } if (dn_match(sm->dn, &rs->sr_entry->e_nname)) { sm->match = 1; - return -1; /* short-circuit the search */ + + } else { + sm->match = -1; } - return 1; + return 0; +} + +int +slap_sasl_matches( Operation *op, BerVarray rules, + struct berval *assertDN, struct berval *authc ) +{ + int rc = LDAP_INAPPROPRIATE_AUTH; + + if ( rules != NULL ) { + int i; + + for( i = 0; !BER_BVISNULL( &rules[i] ); i++ ) { + rc = slap_sasl_match( op, &rules[i], assertDN, authc ); + if ( rc == LDAP_SUCCESS ) break; + } + } + + return rc; } /* @@ -601,25 +892,22 @@ int slap_sasl_match( Operation *opx, struct berval *rule, slap_callback cb = { NULL, sasl_sc_smatch, NULL, NULL }; Operation op = {0}; SlapReply rs = {REP_RESULT}; + struct berval base = BER_BVNULL; + + sm.dn = assertDN; + sm.match = 0; + cb.sc_private = &sm; -#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->bv_val, rule->bv_val, 0 ); -#endif - rc = slap_parseURI( opx, rule, &op.o_req_dn, - &op.o_req_ndn, &op.oq_search.rs_scope, &op.oq_search.rs_filter, + rc = slap_parseURI( opx, rule, &base, + &op.o_req_ndn, &op.ors_scope, &op.ors_filter, &op.ors_filterstr ); if( rc != LDAP_SUCCESS ) goto CONCLUDED; - /* Massive shortcut: search scope == base */ - switch ( op.oq_search.rs_scope ) { - case LDAP_SCOPE_BASE: + switch ( op.ors_scope ) { case LDAP_X_SCOPE_EXACT: exact_match: if ( dn_match( &op.o_req_ndn, assertDN ) ) { @@ -631,19 +919,52 @@ exact_match: case LDAP_X_SCOPE_CHILDREN: case LDAP_X_SCOPE_SUBTREE: + case LDAP_X_SCOPE_ONELEVEL: { int d = assertDN->bv_len - op.o_req_ndn.bv_len; rc = LDAP_INAPPROPRIATE_AUTH; - if ( d == 0 && op.oq_search.rs_scope == LDAP_X_SCOPE_SUBTREE ) { + if ( d == 0 && op.ors_scope == LDAP_X_SCOPE_SUBTREE ) { goto exact_match; } else if ( d > 0 ) { - struct berval bv = { op.o_req_ndn.bv_len, assertDN->bv_val + d }; + struct berval bv; + + /* leave room for at least one char of attributeType, + * one for '=' and one for ',' */ + if ( d < STRLENOF( "x=,") ) { + goto CONCLUDED; + } + + bv.bv_len = op.o_req_ndn.bv_len; + bv.bv_val = assertDN->bv_val + d; if ( bv.bv_val[ -1 ] == ',' && dn_match( &op.o_req_ndn, &bv ) ) { - rc = LDAP_SUCCESS; + switch ( op.ors_scope ) { + case LDAP_X_SCOPE_SUBTREE: + case LDAP_X_SCOPE_CHILDREN: + rc = LDAP_SUCCESS; + break; + + case LDAP_X_SCOPE_ONELEVEL: + { + struct berval pdn; + + dnParent( assertDN, &pdn ); + /* the common portion of the DN + * already matches, so only check + * if parent DN of assertedDN + * is all the pattern */ + if ( pdn.bv_len == op.o_req_ndn.bv_len ) { + rc = LDAP_SUCCESS; + } + break; + } + default: + /* at present, impossible */ + assert( 0 ); + } } } goto CONCLUDED; @@ -663,25 +984,61 @@ exact_match: } goto CONCLUDED; + case LDAP_X_SCOPE_GROUP: { + char *tmp; + + /* Now filterstr looks like "(&(objectClass=)(=" + * we need to append the so that the is searched + * with scope "base", and the filter ensures that is + * member of the group */ + tmp = ch_realloc( op.ors_filterstr.bv_val, op.ors_filterstr.bv_len + + assertDN->bv_len + STRLENOF( /*"(("*/ "))" ) + 1 ); + if ( tmp == NULL ) { + rc = LDAP_NO_MEMORY; + goto CONCLUDED; + } + op.ors_filterstr.bv_val = tmp; + + tmp = lutil_strcopy( &tmp[op.ors_filterstr.bv_len], assertDN->bv_val ); + tmp = lutil_strcopy( tmp, /*"(("*/ "))" ); + + /* pass opx because str2filter_x may (and does) use o_tmpmfuncs */ + op.ors_filter = str2filter_x( opx, op.ors_filterstr.bv_val ); + if ( op.ors_filter == NULL ) { + rc = LDAP_PROTOCOL_ERROR; + goto CONCLUDED; + } + op.ors_scope = LDAP_SCOPE_BASE; + + /* hijack match DN: use that of the group instead of the assertDN; + * assertDN is now in the filter */ + sm.dn = &op.o_req_ndn; + + /* do the search */ + break; + } + + case LDAP_X_SCOPE_USERS: + if ( !BER_BVISEMPTY( assertDN ) ) { + rc = LDAP_SUCCESS; + } else { + rc = LDAP_INAPPROPRIATE_AUTH; + } + goto CONCLUDED; + default: break; } /* Must run an internal search. */ - if ( op.oq_search.rs_filter == NULL ) { + if ( op.ors_filter == NULL ) { rc = LDAP_FILTER_ERROR; goto CONCLUDED; } -#ifdef NEW_LOGGING - LDAP_LOG( TRANSPORT, DETAIL1, - "slap_sasl_match: performing internal search (base=%s, scope=%d)\n", - op.o_req_ndn.bv_val, op.oq_search.rs_scope, 0 ); -#else Debug( LDAP_DEBUG_TRACE, "slap_sasl_match: performing internal search (base=%s, scope=%d)\n", - op.o_req_ndn.bv_val, op.oq_search.rs_scope, 0 ); -#endif + op.o_req_ndn.bv_val, op.ors_scope, 0 ); op.o_bd = select_backend( &op.o_req_ndn, 0, 1 ); if(( op.o_bd == NULL ) || ( op.o_bd->be_search == NULL)) { @@ -689,48 +1046,42 @@ exact_match: goto CONCLUDED; } - sm.dn = assertDN; - sm.match = 0; - cb.sc_private = &sm; - + op.o_hdr = opx->o_hdr; 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_is_auth_check = 1; - op.o_threadctx = opx->o_threadctx; - op.o_tmpmemctx = opx->o_tmpmemctx; - op.o_tmpmfuncs = opx->o_tmpmfuncs; -#ifdef LDAP_SLAPI - op.o_pb = opx->o_pb; -#endif - op.o_conn = opx->o_conn; - op.o_connid = opx->o_connid; - op.o_req_dn = op.o_req_ndn; + /* use req_ndn as req_dn instead of non-pretty base of uri */ + if( !BER_BVISNULL( &base ) ) { + ch_free( base.bv_val ); + /* just in case... */ + BER_BVZERO( &base ); + } + ber_dupbv_x( &op.o_req_dn, &op.o_req_ndn, op.o_tmpmemctx ); + op.ors_deref = LDAP_DEREF_NEVER; + op.ors_slimit = 1; + op.ors_tlimit = SLAP_NO_LIMIT; + op.ors_attrs = slap_anlist_no_attrs; + op.ors_attrsonly = 1; op.o_bd->be_search( &op, &rs ); - if (sm.match) { + if (sm.match == 1) { rc = LDAP_SUCCESS; } else { rc = LDAP_INAPPROPRIATE_AUTH; } CONCLUDED: - if( op.o_req_dn.bv_len ) ch_free( op.o_req_dn.bv_val ); - if( op.o_req_ndn.bv_len ) sl_free( op.o_req_ndn.bv_val, opx->o_tmpmemctx ); - if( op.oq_search.rs_filter ) filter_free_x( opx, op.oq_search.rs_filter ); - if( op.ors_filterstr.bv_len ) ch_free( op.ors_filterstr.bv_val ); - -#ifdef NEW_LOGGING - LDAP_LOG( TRANSPORT, ENTRY, - "slap_sasl_match: comparison returned %d\n", rc, 0, 0 ); -#else + if( !BER_BVISNULL( &op.o_req_dn ) ) slap_sl_free( op.o_req_dn.bv_val, opx->o_tmpmemctx ); + if( !BER_BVISNULL( &op.o_req_ndn ) ) slap_sl_free( op.o_req_ndn.bv_val, opx->o_tmpmemctx ); + if( op.ors_filter ) filter_free_x( opx, op.ors_filter ); + if( !BER_BVISNULL( &op.ors_filterstr ) ) ch_free( op.ors_filterstr.bv_val ); + Debug( LDAP_DEBUG_TRACE, "<===slap_sasl_match: comparison returned %d\n", rc, 0, 0); -#endif return( rc ); } @@ -752,43 +1103,24 @@ slap_sasl_check_authz( Operation *op, struct berval *authc ) { int i, rc; - BerVarray vals=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->bv_val, ad->ad_cname.bv_val, searchDN->bv_val); -#endif - rc = backend_attribute( op, NULL, - searchDN, ad, &vals ); + rc = backend_attribute( op, NULL, searchDN, ad, &vals, ACL_AUTH ); if( rc != LDAP_SUCCESS ) goto COMPLETE; - /* Check if the *assertDN matches any **vals */ - if( vals != NULL ) { - for( i=0; vals[i].bv_val != NULL; i++ ) { - rc = slap_sasl_match( op, &vals[i], assertDN, authc ); - if ( rc == LDAP_SUCCESS ) goto COMPLETE; - } - } - rc = LDAP_INAPPROPRIATE_AUTH; + /* Check if the *assertDN matches any *vals */ + rc = slap_sasl_matches( op, vals, assertDN, authc ); COMPLETE: if( vals ) ber_bvarray_free_x( vals, op->o_tmpmemctx ); -#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", ad->ad_cname.bv_val, rc, 0); -#endif return( rc ); } @@ -802,61 +1134,59 @@ COMPLETE: * entry, return the DN of that one entry. */ void slap_sasl2dn( Operation *opx, - struct berval *saslname, struct berval *sasldn ) + struct berval *saslname, struct berval *sasldn, int flags ) { int rc; slap_callback cb = { NULL, sasl_sc_sasl2dn, NULL, NULL }; Operation op = {0}; SlapReply rs = {REP_RESULT}; - struct berval regout = { 0, NULL }; + struct berval regout = BER_BVNULL; + struct berval base = BER_BVNULL; -#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 - sasldn->bv_val = NULL; - sasldn->bv_len = 0; + BER_BVZERO( sasldn ); cb.sc_private = sasldn; /* Convert the SASL name into a minimal URI */ - if( !slap_sasl_regexp( saslname, ®out, opx->o_tmpmemctx ) ) { + if( !slap_authz_regexp( saslname, ®out, flags, opx->o_tmpmemctx ) ) { goto FINISHED; } - rc = slap_parseURI( opx, ®out, &op.o_req_dn, - &op.o_req_ndn, &op.oq_search.rs_scope, &op.oq_search.rs_filter, + rc = slap_parseURI( opx, ®out, &base, + &op.o_req_ndn, &op.ors_scope, &op.ors_filter, &op.ors_filterstr ); - if( regout.bv_val ) sl_free( regout.bv_val, opx->o_tmpmemctx ); - if( rc != LDAP_SUCCESS ) { + if ( !BER_BVISNULL( ®out ) ) slap_sl_free( regout.bv_val, opx->o_tmpmemctx ); + if ( rc != LDAP_SUCCESS ) { goto FINISHED; } /* Must do an internal search */ op.o_bd = select_backend( &op.o_req_ndn, 0, 1 ); - /* Massive shortcut: search scope == base */ - switch ( op.oq_search.rs_scope ) { - case LDAP_SCOPE_BASE: + switch ( op.ors_scope ) { case LDAP_X_SCOPE_EXACT: *sasldn = op.o_req_ndn; - op.o_req_ndn.bv_len = 0; - op.o_req_ndn.bv_val = NULL; + BER_BVZERO( &op.o_req_ndn ); /* intentionally continue to next case */ case LDAP_X_SCOPE_REGEX: case LDAP_X_SCOPE_SUBTREE: case LDAP_X_SCOPE_CHILDREN: + case LDAP_X_SCOPE_ONELEVEL: + case LDAP_X_SCOPE_GROUP: + case LDAP_X_SCOPE_USERS: /* correctly parsed, but illegal */ goto FINISHED; + case LDAP_SCOPE_BASE: case LDAP_SCOPE_ONELEVEL: case LDAP_SCOPE_SUBTREE: +#ifdef LDAP_SCOPE_SUBORDINATE + case LDAP_SCOPE_SUBORDINATE: +#endif /* do a search */ break; @@ -865,59 +1195,61 @@ void slap_sasl2dn( Operation *opx, assert( 0 ); } -#ifdef NEW_LOGGING - LDAP_LOG( TRANSPORT, DETAIL1, - "slap_sasl2dn: performing internal search (base=%s, scope=%d)\n", - op.o_req_ndn.bv_val, op.oq_search.rs_scope, 0 ); -#else Debug( LDAP_DEBUG_TRACE, "slap_sasl2dn: performing internal search (base=%s, scope=%d)\n", - op.o_req_ndn.bv_val, op.oq_search.rs_scope, 0 ); -#endif + op.o_req_ndn.bv_val, op.ors_scope, 0 ); - if(( op.o_bd == NULL ) || ( op.o_bd->be_search == NULL)) { + if ( ( op.o_bd == NULL ) || ( op.o_bd->be_search == NULL) ) { + goto FINISHED; + } + + /* Must run an internal search. */ + if ( op.ors_filter == NULL ) { + rc = LDAP_FILTER_ERROR; goto FINISHED; } - op.o_conn = opx->o_conn; - op.o_connid = opx->o_connid; + op.o_hdr = opx->o_hdr; op.o_tag = LDAP_REQ_SEARCH; - op.o_protocol = LDAP_VERSION3; op.o_ndn = opx->o_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 = opx->o_threadctx; - op.o_tmpmemctx = opx->o_tmpmemctx; - op.o_tmpmfuncs = opx->o_tmpmfuncs; -#ifdef LDAP_SLAPI - op.o_pb = opx->o_pb; -#endif - op.oq_search.rs_deref = LDAP_DEREF_NEVER; - op.oq_search.rs_slimit = 1; - op.oq_search.rs_attrsonly = 1; - op.o_req_dn = op.o_req_ndn; + op.ors_deref = LDAP_DEREF_NEVER; + op.ors_slimit = 1; + op.ors_tlimit = SLAP_NO_LIMIT; + op.ors_attrs = slap_anlist_no_attrs; + op.ors_attrsonly = 1; + /* use req_ndn as req_dn instead of non-pretty base of uri */ + if( !BER_BVISNULL( &base ) ) { + ch_free( base.bv_val ); + /* just in case... */ + BER_BVZERO( &base ); + } + ber_dupbv_x( &op.o_req_dn, &op.o_req_ndn, op.o_tmpmemctx ); op.o_bd->be_search( &op, &rs ); FINISHED: - if( sasldn->bv_len ) { + if( !BER_BVISEMPTY( sasldn ) ) { opx->o_conn->c_authz_backend = op.o_bd; } - if( op.o_req_dn.bv_len ) ch_free( op.o_req_dn.bv_val ); - if( op.o_req_ndn.bv_len ) sl_free( op.o_req_ndn.bv_val, opx->o_tmpmemctx ); - if( op.oq_search.rs_filter ) filter_free_x( opx, op.oq_search.rs_filter ); - if( op.ors_filterstr.bv_len ) ch_free( op.ors_filterstr.bv_val ); + if( !BER_BVISNULL( &op.o_req_dn ) ) { + slap_sl_free( op.o_req_dn.bv_val, opx->o_tmpmemctx ); + } + if( !BER_BVISNULL( &op.o_req_ndn ) ) { + slap_sl_free( op.o_req_ndn.bv_val, opx->o_tmpmemctx ); + } + if( op.ors_filter ) { + filter_free_x( opx, op.ors_filter ); + } + if( !BER_BVISNULL( &op.ors_filterstr ) ) { + ch_free( op.ors_filterstr.bv_val ); + } -#ifdef NEW_LOGGING - LDAP_LOG( TRANSPORT, ENTRY, - "slap_sasl2dn: Converted SASL name to %s\n", - sasldn->bv_len ? sasldn->bv_val : "", 0, 0 ); -#else Debug( LDAP_DEBUG_TRACE, "<==slap_sasl2dn: Converted SASL name to %s\n", - sasldn->bv_len ? sasldn->bv_val : "", 0, 0 ); -#endif + !BER_BVISEMPTY( sasldn ) ? sasldn->bv_val : "", 0, 0 ); return; } @@ -938,15 +1270,9 @@ int slap_sasl_authorized( Operation *op, goto DONE; } -#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 ) ) { @@ -955,7 +1281,9 @@ int slap_sasl_authorized( Operation *op, } /* Allow the manager to authorize as any DN. */ - if( op->o_conn->c_authz_backend && be_isroot( op->o_conn->c_authz_backend, authcDN )) { + if( op->o_conn->c_authz_backend && + be_isroot_dn( op->o_conn->c_authz_backend, authcDN )) + { rc = LDAP_SUCCESS; goto DONE; } @@ -964,7 +1292,7 @@ int slap_sasl_authorized( Operation *op, if( authz_policy & SASL_AUTHZ_TO ) { rc = slap_sasl_check_authz( op, authcDN, authzDN, slap_schema.si_ad_saslAuthzTo, authcDN ); - if( rc == LDAP_SUCCESS ) { + if( rc == LDAP_SUCCESS && !(authz_policy & SASL_AUTHZ_AND) ) { goto DONE; } } @@ -982,12 +1310,8 @@ int slap_sasl_authorized( Operation *op, DONE: -#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 ); }