#include <ac/regex.h>
#include "slap.h"
+#include "config.h"
/*
* This overlay limits the values which can be placed into an
* control the add and modify value mods of a modify)
*/
+#define REGEX_STR "regex"
+
/*
* Linked list of attribute constraints which we should enforce.
* This is probably a sub optimal structure - some form of sorted
* likely to be much bigger than 4 or 5. We stick with a list for
* the moment.
*/
+
typedef struct constraint {
struct constraint *ap_next;
AttributeDescription *ap;
regex_t *re;
+ char *re_str; /* string representation of regex */
} constraint;
+enum {
+ CONSTRAINT_ATTRIBUTE = 1
+};
+
+static ConfigDriver constraint_cf_gen;
+
+static ConfigTable constraintcfg[] = {
+ { "constraint_attribute", "attribute regex <regular expression>",
+ 4, 4, 0, ARG_MAGIC | CONSTRAINT_ATTRIBUTE, constraint_cf_gen,
+ "( HPcfgOvAt:4.1 NAME 'olcConstraintAttribute' "
+ "DESC 'regular expression constraint for attribute' "
+ "SYNTAX OMsDirectoryString )", NULL, NULL },
+ { NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs constraintocs[] = {
+ { "( HPcfgOvOc:4.1 "
+ "NAME 'olcConstraintConfig' "
+ "DESC 'Constraint overlay configuration' "
+ "SUP olcOverlayConfig "
+ "MAY ( olcConstraintAttribute ) )",
+ Cft_Overlay, constraintcfg },
+ { NULL, 0, NULL }
+};
+
+static int
+constraint_cf_gen( ConfigArgs *c )
+{
+ slap_overinst *on = (slap_overinst *)(c->bi);
+ constraint *cn = on->on_bi.bi_private, *cp;
+ struct berval bv;
+ int i, rc = 0;
+ constraint ap = { NULL, NULL, NULL }, *a2 = NULL;
+ regmatch_t rm[2];
+ const char *text = NULL;
+
+ switch ( c->op ) {
+ case SLAP_CONFIG_EMIT:
+ switch (c->type) {
+ case CONSTRAINT_ATTRIBUTE:
+ for (cp=cn; cp; cp=cp->ap_next) {
+ int len;
+ char *s;
+
+ len = cp->ap->ad_cname.bv_len +
+ strlen( REGEX_STR ) + strlen( cp->re_str) + 3;
+ s = ch_malloc(len);
+ if (!s) continue;
+ snprintf(s, len, "%s %s %s", cp->ap->ad_cname.bv_val,
+ REGEX_STR, cp->re_str);
+ bv.bv_val = s;
+ bv.bv_len = strlen(s);
+ rc = value_add_one( &c->rvalue_vals, &bv );
+ if (rc) return rc;
+ rc = value_add_one( &c->rvalue_nvals, &bv );
+ if (rc) return rc;
+ ch_free(s);
+ }
+ break;
+ default:
+ abort();
+ break;
+ }
+ break;
+ case LDAP_MOD_DELETE:
+ switch (c->type) {
+ case CONSTRAINT_ATTRIBUTE:
+ if (!cn) break; /* nothing to do */
+
+ if (c->valx < 0) {
+ /* zap all constraints */
+ while (cn) {
+ cp = cn->ap_next;
+ if (cn->re) {
+ regfree(cn->re);
+ ch_free(cn->re);
+ }
+ if (cn->re_str) ch_free(cn->re_str);
+ ch_free(cn);
+ cn = cp;
+ }
+
+ on->on_bi.bi_private = NULL;
+ } else {
+ constraint *cpp;
+
+ /* zap constraint numbered 'valx' */
+ for(i=0, cp = cn, cpp = NULL;
+ (cp) && (i<c->valx);
+ i++, cpp = cp, cp=cp->ap_next);
+
+ if (cpp) {
+ /* zap cp, and join cpp to cp->ap_next */
+ cpp->ap_next = cp->ap_next;
+ if (cp->re) {
+ regfree(cp->re);
+ ch_free(cp->re);
+ }
+ if (cp->re_str) ch_free(cp->re_str);
+ ch_free(cp);
+ } else {
+ /* zap the list head */
+ if (cn->re) {
+ regfree(cn->re);
+ ch_free(cn->re);
+ }
+ if (cn->re_str) ch_free(cn->re_str);
+ ch_free(cn);
+ on->on_bi.bi_private = cn->ap_next;
+ }
+ }
+
+ break;
+ default:
+ abort();
+ break;
+ }
+ break;
+ case SLAP_CONFIG_ADD:
+ case LDAP_MOD_ADD:
+ switch (c->type) {
+ case CONSTRAINT_ATTRIBUTE:
+ if ( slap_str2ad( c->argv[1], &ap.ap, &text ) ) {
+ Debug( LDAP_DEBUG_CONFIG,
+ "constraint_add: <%s>: attribute description unknown %s.\n",
+ c->argv[1], text, 0 );
+ return( ARG_BAD_CONF );
+ }
+
+ if ( strcasecmp( c->argv[2], "regex" ) == 0) {
+ int err;
+
+ ap.re = ch_malloc( sizeof(regex_t) );
+ if ((err = regcomp( ap.re,
+ c->argv[3], REG_EXTENDED )) != 0) {
+ char errmsg[1024];
+
+ regerror( err, ap.re, errmsg, sizeof(errmsg) );
+ ch_free(ap.re);
+ Debug( LDAP_DEBUG_CONFIG,
+ "%s: Illegal regular expression \"%s\": Error %s\n",
+ c->argv[1], c->argv[3], errmsg);
+ ap.re = NULL;
+ return( ARG_BAD_CONF );
+ }
+ ap.re_str = ch_strdup( c->argv[3] );
+ } else {
+ Debug( LDAP_DEBUG_CONFIG,
+ "%s: Unknown constraint type: %s\n",
+ c->argv[1], c->argv[2], 0 );
+ return ( ARG_BAD_CONF );
+ }
+
+
+ a2 = ch_malloc( sizeof(constraint) );
+ a2->ap_next = on->on_bi.bi_private;
+ a2->ap = ap.ap;
+ a2->re = ap.re;
+ a2->re_str = ap.re_str;
+ on->on_bi.bi_private = a2;
+ break;
+ default:
+ abort();
+ break;
+ }
+ break;
+ default:
+ abort();
+ }
+
+ return rc;
+}
+
static int
constraint_violation( constraint *c, struct berval *bv )
{
}
static char *
-print_message( const char *msg, AttributeDescription *a )
+print_message( const char *fmt, AttributeDescription *a )
{
char *ret;
int sz;
- sz = strlen(msg) + a->ad_cname.bv_len + sizeof(" on ");
+ sz = strlen(fmt) + a->ad_cname.bv_len + 1;
ret = ch_malloc(sz);
- snprintf( ret, sz, "%s on %s", msg, a->ad_cname.bv_val );
+ snprintf( ret, sz, fmt, a->ad_cname.bv_val );
return ret;
}
constraint *c = on->on_bi.bi_private, *cp;
BerVarray b = NULL;
int i;
- const char *rsv = "add breaks regular expression constraint";
+ const char *rsv = "add breaks regular expression constraint on %s";
char *msg;
if ((a = op->ora_e->e_attrs) == NULL) {
Modifications *m;
BerVarray b = NULL;
int i;
- const char *rsv = "modify breaks regular expression constraint";
+ const char *rsv = "modify breaks regular expression constraint on %s";
char *msg;
if ((m = op->orm_modlist) == NULL) {
return SLAP_CB_CONTINUE;
}
-static int constraint_config(
- BackendDB *be,
- const char *fname,
- int lineno,
- int argc,
- char **argv
- )
-{
- slap_overinst *on = (slap_overinst *) be->bd_info;
- constraint ap = { NULL, NULL, NULL }, *a2 = NULL;
-
- if ( strcasecmp( argv[0], "constraint_attribute" ) == 0 ) {
- const char *text;
-
- if ( argc != 4 ) {
- Debug( LDAP_DEBUG_ANY, "%s: line %d: "
- "wrong number of parameters in"
- "\"constraint_attribute <attribute> <constraint> <constraint_value>\" line.\n",
- fname, lineno, 0 );
- return( 1 );
- }
- if ( slap_str2ad( argv[1], &ap.ap, &text ) ) {
- Debug( LDAP_DEBUG_ANY, "%s: line %d: "
- "attribute description unknown \"constraint_attribute\" line: %s.\n",
- fname, lineno, text );
- return( 1 );
- }
-
- if ( strcasecmp( argv[2], "regex" ) == 0) {
- int err;
-
- ap.re = ch_malloc( sizeof(regex_t) );
- if ((err = regcomp( ap.re, argv[3], REG_EXTENDED )) != 0) {
- static const char fmt[] = "\"%s\": Error %s";
- char errmsg[1024], *msg;
- int msgsize;
-
- msgsize = regerror( err, ap.re, errmsg, sizeof(errmsg) );
- msgsize += STRLENOF(fmt) - STRLENOF("%s%s") + strlen(argv[3]);
-
- msg = ch_malloc( msgsize + 1 );
- snprintf( msg, msgsize, fmt, argv[3], errmsg );
- ch_free(ap.re);
- Debug( LDAP_DEBUG_ANY,
- "%s: line %d: Illegal regular expression %s\n",
- fname, lineno, msg );
- ch_free(msg);
- ap.re = NULL;
- return(1);
- }
- } else
- Debug( LDAP_DEBUG_ANY, "%s: line %d: "
- "Unknown constraint type: %s",
- fname, lineno, argv[2] );
-
-
- a2 = ch_malloc( sizeof(constraint) );
- a2->ap_next = on->on_bi.bi_private;
- a2->ap = ap.ap;
- a2->re = ap.re;
- on->on_bi.bi_private = a2;
- } else {
- return SLAP_CONF_UNKNOWN;
- }
-
- return 0;
-}
-
static int
constraint_close(
BackendDB *be
for ( ap = on->on_bi.bi_private; ap; ap = a2 ) {
a2 = ap->ap_next;
+ if (ap->re_str) ch_free(ap->re_str);
if (ap->re) {
regfree( ap->re );
ch_free( ap->re );
#endif
int
constraint_initialize( void ) {
+ int rc;
+
constraint_ovl.on_bi.bi_type = "constraint";
- constraint_ovl.on_bi.bi_db_config = constraint_config;
constraint_ovl.on_bi.bi_db_close = constraint_close;
constraint_ovl.on_bi.bi_op_add = constraint_add;
constraint_ovl.on_bi.bi_op_modify = constraint_modify;
+ constraint_ovl.on_bi.bi_private = NULL;
+
+ constraint_ovl.on_bi.bi_cf_ocs = constraintocs;
+ rc = config_register_schema( constraintcfg, constraintocs );
+ if (rc) return rc;
+
return overlay_register( &constraint_ovl );
}
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