r14878: Write swig wrappers for ldb_init() and ldb_connect().

Start wrapper for ldb_search().  Currently it returns a list of swig
ldb_message objects.  More unpacking of results required.
(This used to be commit 704787978aa705edba233249e8eab236ffe303a4)

source4/script/tests/test_swig.sh

@@ -13,6 +13,7 @@ incdir=`dirname $0`
 failed=0
 
 export PYTHONPATH=scripting/swig:$PYTHONPATH
+export LD_LIBRARY_PATH=bin:$LD_LIBRARY_PATH
 
 scripting/swig/torture/torture_tdb.py || failed=`expr $failed + 1`
 scripting/swig/torture/torture_ldb.py || failed=`expr $failed + 1`

source4/scripting/swig/Ldb.py

@@ -23,4 +23,17 @@
 import ldb
 
 class Ldb:
-    pass
+
+    def __init__(self):
+        self.mem_ctx = ldb.talloc_init('python ldb')
+        self.ldb_ctx = ldb.init(self.mem_ctx)
+        
+    def __del__(self):
+        ldb.talloc_free(self.mem_ctx)
+
+    def connect(self, url, flags = 0):
+        ldb.connect(self.ldb_ctx, url, flags, None)
+
+    def search(self, expression):
+        return ldb.search(self.ldb_ctx, None, ldb.LDB_SCOPE_DEFAULT,
+                          expression, None);

source4/scripting/swig/ldb.i

@@ -54,10 +54,11 @@ typedef unsigned long long uint64_t;
 typedef long long int64_t;
 
 #include "lib/ldb/include/ldb.h"
+#include "lib/talloc/talloc.h"
 
 %}
 
-/* The ldb functions will crash if a NULL tdb is passed */
+/* The ldb functions will crash if a NULL ldb is passed */
 
 %include exception.i
 
@@ -67,22 +68,71 @@ typedef long long int64_t;
 			"ldb context must be non-NULL");
 }
 
-/* Throw an IOError exception if tdb_open() or tdb_open_ex() returns NULL */
+/* Use talloc_init() to create a parameter to pass to ldb_init().  Don't
+   forget to free it using talloc_free() afterwards. */
 
-%exception {
-	$action
-	if (result == NULL) {
-		PyErr_SetFromErrno(PyExc_IOError);
-		SWIG_fail;
+TALLOC_CTX *talloc_init(char *name);
+int talloc_free(TALLOC_CTX *ptr);
+
+/* In and out typemaps for struct ldb_val.  This is converted to and from
+   the Python string datatype. */
+
+%typemap(in) struct ldb_val {
+	if (!PyString_Check($input)) {
+		PyErr_SetString(PyExc_TypeError, "string arg expected");
+		return NULL;
+	}
+	$1.length = PyString_Size($input);
+	$1.data = PyString_AsString($input);
+}
+
+%typemap(out) struct ldb_val {
+	if ($1.data == NULL && $1.length == 0) {
+		$result = Py_None;
+	} else {
+		$result = PyString_FromStringAndSize($1.data, $1.length);
 	}
 }
 
+enum ldb_scope {LDB_SCOPE_DEFAULT=-1, 
+		LDB_SCOPE_BASE=0, 
+		LDB_SCOPE_ONELEVEL=1,
+		LDB_SCOPE_SUBTREE=2};
+
+/* Typemap for passing a struct ldb_result by reference */
+
+%typemap(in, numinputs=0) struct ldb_result **OUT (struct ldb_result *temp_ldb_result) {
+	$1 = &temp_ldb_result;
+}
+
+%typemap(argout) struct ldb_result ** {
+	unsigned int i;
+
+	/* XXX: Handle resultobj by throwing an exception if required */
+
+	resultobj = PyList_New((*$1)->count);
+
+	for (i = 0; i < (*$1)->count; i++) {
+		PyList_SetItem(resultobj, i, SWIG_NewPointerObj(*$1, SWIGTYPE_p_ldb_message, 0));
+	}
+}	
+
+%types(struct ldb_result *);
+
+struct ldb_message {
+	struct ldb_dn *dn;
+	unsigned int num_elements;
+	struct ldb_message_element *elements;
+	void *private_data; /* private to the backend */
+};
+
+/* Wrap ldb functions */
 
 %rename ldb_init init;
-struct ldb_context *ldb_init(void *mem_ctx);
+struct ldb_context *ldb_init(TALLOC_CTX *mem_ctx);
 
 %rename ldb_connect connect;
 int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[]);
 
-%rename ldb_request request;
-int ldb_request(struct ldb_context *ldb, struct ldb_request *request);
+%rename ldb_search search;
+int ldb_search(struct ldb_context *ldb, const struct ldb_dn *base, enum ldb_scope scope, const char *expression, const char * const *attrs, struct ldb_result **OUT);

source4/scripting/swig/torture/torture_ldb.py

@@ -6,3 +6,9 @@ def fail(msg):
     print 'FAILED:', msg
     sys.exit(1)
 
+l = Ldb.Ldb()
+
+l.connect('tdb:///tmp/foo.ldb')
+result = l.search('(dn=*)')
+
+print result