better diagnostics

servers/slapd/slapadd.c

@@ -143,7 +143,9 @@ slapadd( int argc, char **argv )
 
 	/* nextline is the line number of the end of the current entry */
 	for( lineno=1; ldif_read_record( ldiffp, &nextline, &buf, &lmax );
-		lineno=nextline+1 ) {
+		lineno=nextline+1 )
+	{
+		BackendDB *bd;
 		Entry *e;
 
 		if ( lineno < jumpline )
@@ -173,9 +175,28 @@ slapadd( int argc, char **argv )
 
 		/* make sure the DN is not empty */
 		if( BER_BVISEMPTY( &e->e_nname ) &&
-			!BER_BVISEMPTY( be->be_nsuffix )) {
-			fprintf( stderr, "%s: empty dn=\"%s\" (line=%d)\n",
-				progname, e->e_dn, lineno );
+			!BER_BVISEMPTY( be->be_nsuffix ))
+		{
+			fprintf( stderr, "%s: line %d: "
+				"cannot add entry with empty dn=\"%s\"",
+				progname, lineno, e->e_dn );
+			bd = select_backend( &e->e_nname, nosubordinates );
+			if ( bd ) {
+				BackendDB *bdtmp;
+				int dbidx = 0;
+				LDAP_STAILQ_FOREACH( bdtmp, &backendDB, be_next ) {
+					if ( bdtmp == bd ) break;
+					dbidx++;
+				}
+
+				assert( bdtmp != NULL );
+				
+				fprintf( stderr, "; did you mean to use database #%d (%s)?",
+					dbidx,
+					bd->be_suffix[0].bv_val );
+
+			}
+			fprintf( stderr, "\n" );
 			rc = EXIT_FAILURE;
 			entry_free( e );
 			if( continuemode ) continue;
@@ -183,19 +204,32 @@ slapadd( int argc, char **argv )
 		}
 
 		/* check backend */
-		if( select_backend( &e->e_nname, nosubordinates )
-			!= be )
-		{
+		bd = select_backend( &e->e_nname, nosubordinates );
+		if ( bd != be ) {
 			fprintf( stderr, "%s: line %d: "
-				"database (%s) not configured to hold \"%s\"\n",
+				"database #%d (%s) not configured to hold \"%s\"",
 				progname, lineno,
-				be ? be->be_suffix[0].bv_val : "<none>",
+				dbnum,
+				be->be_suffix[0].bv_val,
 				e->e_dn );
-			fprintf( stderr, "%s: line %d: "
-				"database (%s) not configured to hold \"%s\"\n",
-				progname, lineno,
-				be ? be->be_nsuffix[0].bv_val : "<none>",
-				e->e_ndn );
+			if ( bd ) {
+				BackendDB *bdtmp;
+				int dbidx = 0;
+				LDAP_STAILQ_FOREACH( bdtmp, &backendDB, be_next ) {
+					if ( bdtmp == bd ) break;
+					dbidx++;
+				}
+
+				assert( bdtmp != NULL );
+				
+				fprintf( stderr, "; did you mean to use database #%d (%s)?",
+					dbidx,
+					bd->be_suffix[0].bv_val );
+
+			} else {
+				fprintf( stderr, "; no database configured for that naming context" );
+			}
+			fprintf( stderr, "\n" );
 			rc = EXIT_FAILURE;
 			entry_free( e );
 			if( continuemode ) continue;

servers/slapd/slapcommon.c

@@ -218,7 +218,7 @@ slap_tool_init(
 	char *subtree = NULL;
 	char *ldiffile	= NULL;
 	char **debug_unknowns = NULL;
-	int rc, i, dbnum;
+	int rc, i;
 	int mode = SLAP_TOOL_MODE;
 	int truncatemode = 0;
 	int use_glue = 1;
@@ -353,7 +353,7 @@ slap_tool_init(
 			break;
 
 		case 'n':	/* which config file db to index */
-			if ( lutil_atoi( &dbnum, optarg ) ) {
+			if ( lutil_atoi( &dbnum, optarg ) || dbnum < 0 ) {
 				usage( tool, progname );
 			}
 			break;
@@ -689,12 +689,12 @@ slap_tool_init(
 				progname, dbnum, 0 );
 		}
 
-	} else if ( dbnum < 0 || dbnum > (nbackends-1) ) {
+	} else if ( dbnum >= nbackends ) {
 		fprintf( stderr,
 			"Database number selected via -n is out of range\n"
 			"Must be in the range 0 to %d"
-			" (number of configured databases)\n",
-			nbackends-1 );
+			" (the number of configured databases)\n",
+			nbackends - 1 );
 		exit( EXIT_FAILURE );
 
 	} else {
@@ -705,6 +705,15 @@ slap_tool_init(
 	}
 
 startup:;
+	if ( be ) {
+		BackendDB *bdtmp;
+
+		dbnum = 0;
+		LDAP_STAILQ_FOREACH( bdtmp, &backendDB, be_next ) {
+			if ( bdtmp == be ) break;
+			dbnum++;
+		}
+	}
 
 #ifdef CSRIMALLOC
 	mal_leaktrace(1);

servers/slapd/slapcommon.h

@@ -34,6 +34,7 @@ enum slaptool {
 
 typedef struct tool_vars {
 	Backend *tv_be;
+	int tv_dbnum;
 	int tv_verbose;
 	int tv_quiet;
 	int tv_update_ctxcsn;
@@ -66,6 +67,7 @@ typedef struct tool_vars {
 extern tool_vars tool_globals;
 
 #define	be tool_globals.tv_be
+#define	dbnum tool_globals.tv_dbnum
 #define verbose tool_globals.tv_verbose
 #define quiet tool_globals.tv_quiet
 #define jumpline tool_globals.tv_jumpline