Moving NSCP Directory Server from DirectoryBranch to TRUNK, initial drop. (foxworth)ldapserver7x

1 files changed, 86 insertions, 0 deletions

diff --git a/ldap/servers/slapd/dynalib.c b/ldap/servers/slapd/dynalib.c
new file mode 100644
index 00000000..4839a17b
--- /dev/null
+++ b/ldap/servers/slapd/dynalib.c
@@ -0,0 +1,86 @@
+/** BEGIN COPYRIGHT BLOCK
+ * Copyright 2001 Sun Microsystems, Inc.
+ * Portions copyright 1999, 2001-2003 Netscape Communications Corporation.
+ * All rights reserved.
+ * END COPYRIGHT BLOCK **/
+/* dynalib.c - dynamic library routines */
+
+#include <stdio.h>
+#include "prlink.h"
+#include "slap.h"
+#if defined(SOLARIS)
+#include <dlfcn.h> /* dlerror */
+#endif
+
+
+static struct dynalib {
+	char		*dl_name;
+	PRLibrary	*dl_handle;
+} **libs = NULL;
+
+static void symload_report_error( char *libpath, char *symbol, char *plugin,
+		int libopen );
+
+void *
+sym_load( char *libpath, char *symbol, char *plugin, int report_errors )
+{
+	int	i;
+	void	*handle;
+
+	for ( i = 0; libs != NULL && libs[i] != NULL; i++ ) {
+		if ( strcasecmp( libs[i]->dl_name, libpath ) == 0 ) {
+			handle = PR_FindSymbol( libs[i]->dl_handle, symbol );
+			if ( NULL == handle && report_errors ) {
+				symload_report_error( libpath, symbol, plugin, 1 /* lib open */ );
+			}
+			return handle;
+		}
+	}
+
+	if ( (handle = PR_LoadLibrary( libpath )) == NULL ) {
+		if ( report_errors ) {
+			symload_report_error( libpath, symbol, plugin, 0 /* lib not open */ );
+		}
+		return( NULL );
+	}
+
+	libs = (struct dynalib **) slapi_ch_realloc( (char *) libs, (i + 2) *
+	    sizeof(struct dynalib) );
+	libs[i] = (struct dynalib *) slapi_ch_malloc( sizeof(struct dynalib) );
+	libs[i]->dl_name = slapi_ch_strdup( libpath );
+	libs[i]->dl_handle = handle;
+	libs[ i + 1 ] = NULL;
+
+	handle = PR_FindSymbol( libs[i]->dl_handle, symbol );
+	if ( NULL == handle && report_errors ) {
+		symload_report_error( libpath, symbol, plugin, 1 /* lib open */ );
+	}
+	return handle;
+}
+
+
+static void
+symload_report_error( char *libpath, char *symbol, char *plugin, int libopen )
+{
+	char	*errtext = NULL;
+	PRInt32	errlen, err;
+
+	errlen = PR_GetErrorTextLength();
+	if ( errlen > 0 ) {
+		errtext = slapi_ch_malloc( errlen );
+		if (( err = PR_GetErrorText( errtext )) > 0 ) {
+			LDAPDebug( LDAP_DEBUG_ANY, SLAPI_COMPONENT_NAME_NSPR " error %d: %s\n",
+				PR_GetError(), errtext, 0 );
+		}
+		slapi_ch_free( (void **)&errtext );
+	}
+	if ( libopen ) {
+		LDAPDebug( LDAP_DEBUG_ANY,
+			"Could not load symbol \"%s\" from \"%s\" for plugin %s\n",
+					symbol, libpath, plugin );
+	} else {
+		LDAPDebug( LDAP_DEBUG_ANY,
+			"Could not open library \"%s\" for plugin %s\n",
+			libpath, plugin, 0 );
+	}
+}