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authorJakub Hrozek <jhrozek@redhat.com>2010-08-27 12:13:40 +0200
committerStephen Gallagher <sgallagh@redhat.com>2010-09-08 09:36:21 -0400
commit4f5405595730a106f7406eba849f65cda2eb53f1 (patch)
treec240800f085b3a43fc0a759adee88fd4cda935ef /src
parent2e6087c6cc903d5164b9a1d5e3d791fd046001d9 (diff)
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Python bindings for obfuscation
Diffstat (limited to 'src')
-rw-r--r--src/python/pysss.c183
1 files changed, 180 insertions, 3 deletions
diff --git a/src/python/pysss.c b/src/python/pysss.c
index 36bae264..c638d179 100644
--- a/src/python/pysss.c
+++ b/src/python/pysss.c
@@ -28,6 +28,7 @@
#include "db/sysdb.h"
#include "tools/tools_util.h"
#include "tools/sss_sync_ops.h"
+#include "util/crypto/sss_crypto.h"
/*
* function taken from samba sources tree as of Aug 20 2009,
@@ -54,8 +55,10 @@ static char **PyList_AsStringList(TALLOC_CTX *mem_ctx, PyObject *list,
return ret;
}
+/* ======================= sysdb python wrappers ==========================*/
+
/*
- * The sss.local object
+ * The sss.password object
*/
typedef struct {
PyObject_HEAD
@@ -820,7 +823,7 @@ static PyMethodDef sss_local_methods[] = {
{NULL, NULL, 0, NULL} /* Sentinel */
};
-static PyMemberDef sss_members[] = {
+static PyMemberDef sss_local_members[] = {
{ discard_const_p(char, "lock"), T_INT,
offsetof(PySssLocalObject, lock), RO, NULL},
{ discard_const_p(char, "unlock"), T_INT,
@@ -838,11 +841,181 @@ static PyTypeObject pysss_local_type = {
.tp_new = PySssLocalObject_new,
.tp_dealloc = (destructor) PySssLocalObject_dealloc,
.tp_methods = sss_local_methods,
- .tp_members = sss_members,
+ .tp_members = sss_local_members,
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.tp_doc = "SSS DB manipulation",
};
+/* ==================== obfuscation python wrappers ========================*/
+
+/*
+ * The sss.local object
+ */
+typedef struct {
+ PyObject_HEAD
+
+ int aes_256;
+} PySssPasswordObject;
+
+PyDoc_STRVAR(py_sss_encrypt__doc__,
+"Obfuscate a password\n\n"
+":param password: The password to obfuscate\n\n"
+":param method: The obfuscation method\n\n");
+
+static PyObject *py_sss_encrypt(PySssPasswordObject *self,
+ PyObject *args,
+ PyObject *kwds)
+{
+ char *password = NULL;
+ int plen; /* may contain NULL bytes */
+ char *obfpwd = NULL;
+ TALLOC_CTX *tctx = NULL;
+ int ret;
+ int mode;
+ PyObject *retval = NULL;
+
+ /* parse arguments */
+ if (!PyArg_ParseTuple(args, discard_const_p(char, "s#i"),
+ &password, &plen, &mode)) {
+ return NULL;
+ }
+
+ tctx = talloc_new(NULL);
+ if (!tctx) {
+ PyErr_NoMemory();
+ return NULL;
+ }
+
+ ret = sss_password_encrypt(tctx, password, plen+1,
+ mode, &obfpwd);
+ if (ret != EOK) {
+ PyErr_SetSssError(ret);
+ goto fail;
+ }
+
+ retval = Py_BuildValue("s", obfpwd);
+ if (retval == NULL) {
+ goto fail;
+ }
+
+fail:
+ talloc_zfree(tctx);
+ return retval;
+}
+
+#if 0
+PyDoc_STRVAR(py_sss_decrypt__doc__,
+"Deobfuscate a password\n\n"
+":param obfpwd: The password to convert back to clear text\n\n");
+
+static PyObject *py_sss_decrypt(PySssPasswordObject *self,
+ PyObject *args,
+ PyObject *kwds)
+{
+ char *password = NULL;
+ char *obfpwd = NULL;
+ TALLOC_CTX *tctx = NULL;
+ int ret;
+ PyObject *retval = NULL;
+
+ /* parse arguments */
+ if (!PyArg_ParseTuple(args, discard_const_p(char, "s"),
+ &obfpwd)) {
+ return NULL;
+ }
+
+ tctx = talloc_new(NULL);
+ if (!tctx) {
+ PyErr_NoMemory();
+ return NULL;
+ }
+
+ ret = sss_password_decrypt(tctx, obfpwd, &password);
+ if (ret != EOK) {
+ PyErr_SetSssError(ret);
+ goto fail;
+ }
+
+ retval = Py_BuildValue("s", password);
+ if (retval == NULL) {
+ goto fail;
+ }
+
+fail:
+ talloc_zfree(tctx);
+ return retval;
+}
+#endif
+
+/*
+ * The sss.password destructor
+ */
+static void PySssPasswordObject_dealloc(PySssPasswordObject *self)
+{
+ self->ob_type->tp_free((PyObject*) self);
+}
+
+/*
+ * The sss.password constructor
+ */
+static PyObject *PySssPasswordObject_new(PyTypeObject *type,
+ PyObject *args,
+ PyObject *kwds)
+{
+ PySssPasswordObject *self;
+
+ self = (PySssPasswordObject *) type->tp_alloc(type, 0);
+ if (self == NULL) {
+ PyErr_NoMemory();
+ return NULL;
+ }
+
+ self->aes_256 = AES_256;
+
+ return (PyObject *) self;
+}
+
+/*
+ * sss.password object methods
+ */
+static PyMethodDef sss_password_methods[] = {
+ { "encrypt", (PyCFunction) py_sss_encrypt,
+ METH_VARARGS | METH_STATIC, py_sss_encrypt__doc__
+ },
+#if 0
+ { "decrypt", (PyCFunction) py_sss_decrypt,
+ METH_VARARGS | METH_STATIC, py_sss_decrypt__doc__
+ },
+#endif
+ {NULL, NULL, 0, NULL} /* Sentinel */
+};
+
+/*
+ * sss.password object members
+ */
+static PyMemberDef sss_password_members[] = {
+ { discard_const_p(char, "AES_256"), T_INT,
+ offsetof(PySssPasswordObject, aes_256), RO, NULL},
+ {NULL, 0, 0, 0, NULL} /* Sentinel */
+};
+
+/*
+ * sss.password object properties
+ */
+static PyTypeObject pysss_password_type = {
+ PyObject_HEAD_INIT(NULL)
+ .tp_name = "sss.password",
+ .tp_basicsize = sizeof(PySssPasswordObject),
+ .tp_new = PySssPasswordObject_new,
+ .tp_dealloc = (destructor) PySssPasswordObject_dealloc,
+ .tp_methods = sss_password_methods,
+ .tp_members = sss_password_members,
+ .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+ .tp_doc = "SSS password obfuscation",
+};
+
+/* ==================== the sss module initialization =======================*/
+
/*
* Module methods
*/
@@ -860,6 +1033,8 @@ initpysss(void)
if (PyType_Ready(&pysss_local_type) < 0)
return;
+ if (PyType_Ready(&pysss_password_type) < 0)
+ return;
m = Py_InitModule(discard_const_p(char, "pysss"), module_methods);
if (m == NULL)
@@ -867,5 +1042,7 @@ initpysss(void)
Py_INCREF(&pysss_local_type);
PyModule_AddObject(m, discard_const_p(char, "local"), (PyObject *)&pysss_local_type);
+ Py_INCREF(&pysss_password_type);
+ PyModule_AddObject(m, discard_const_p(char, "password"), (PyObject *)&pysss_password_type);
}