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340 lines (310 loc) · 11 KB
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Copy pathmessage.c
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340 lines (310 loc) · 11 KB
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/* See https://www.python-ldap.org/ for details. */
#include "pythonldap.h"
/*
* Converts an LDAP message into a Python structure.
*
* On success, returns a list of dictionaries.
* On failure, returns NULL, and sets an error.
*
* The message m is always freed, regardless of return value.
*
* If add_ctrls is non-zero, per-entry/referral/partial/intermediate
* controls will be added as a third item to each entry tuple
*
* If add_intermediates is non-zero, intermediate/partial results will
* be returned
*/
PyObject *
LDAPmessage_to_python(PyObject *module, LDAP *ld, LDAPMessage *m,
int add_ctrls, int add_intermediates)
{
/* we convert an LDAP message into a python structure.
* It is always a list of dictionaries.
* We always free m.
*/
PyObject *result, *pyctrls = 0;
LDAPMessage *entry;
LDAPControl **serverctrls = 0;
int rc;
result = PyList_New(0);
if (result == NULL) {
ldap_msgfree(m);
return NULL;
}
for (entry = ldap_first_entry(ld, m);
entry != NULL; entry = ldap_next_entry(ld, entry)) {
char *dn;
char *attr;
BerElement *ber = NULL;
PyObject *entrytuple;
PyObject *attrdict;
PyObject *pydn;
dn = ldap_get_dn(ld, entry);
if (dn == NULL) {
Py_DECREF(result);
ldap_msgfree(m);
return LDAPerror(module, ld);
}
attrdict = PyDict_New();
if (attrdict == NULL) {
Py_DECREF(result);
ldap_msgfree(m);
ldap_memfree(dn);
return NULL;
}
rc = ldap_get_entry_controls(ld, entry, &serverctrls);
if (rc) {
Py_DECREF(result);
Py_DECREF(attrdict);
ldap_msgfree(m);
ldap_memfree(dn);
return LDAPerror(module, ld);
}
/* convert serverctrls to list of tuples */
if (!(pyctrls = LDAPControls_to_List(serverctrls))) {
int err = LDAP_NO_MEMORY;
ldap_set_option(ld, LDAP_OPT_ERROR_NUMBER, &err);
Py_DECREF(result);
Py_DECREF(attrdict);
ldap_msgfree(m);
ldap_memfree(dn);
ldap_controls_free(serverctrls);
return LDAPerror(module, ld);
}
ldap_controls_free(serverctrls);
/* Fill attrdict with lists */
for (attr = ldap_first_attribute(ld, entry, &ber);
attr != NULL; attr = ldap_next_attribute(ld, entry, ber)
) {
PyObject *valuelist;
PyObject *pyattr;
struct berval **bvals;
pyattr = PyUnicode_FromString(attr);
if (pyattr == NULL) {
Py_DECREF(attrdict);
Py_DECREF(result);
if (ber != NULL)
ber_free(ber, 0);
ldap_msgfree(m);
ldap_memfree(attr);
ldap_memfree(dn);
Py_XDECREF(pyctrls);
return NULL;
}
bvals = ldap_get_values_len(ld, entry, attr);
/* Find which list to append to */
if (PyDict_Contains(attrdict, pyattr)) {
/* Multiple attribute entries with same name. This code path
* is rarely used and cannot be exhausted with OpenLDAP
* tests. 389-DS sometimes triggeres it, see
* https://github.com/python-ldap/python-ldap/issues/218
*/
#if PY_VERSION_HEX >= 0x030D0000
PyDict_GetItemRef(attrdict, pyattr, &valuelist);
#else
/* <3.13 compat, GIL always exists, so no race */
valuelist = PyDict_GetItem(attrdict, pyattr);
/* Turn borrowed reference into owned reference */
if (valuelist != NULL)
Py_INCREF(valuelist);
#endif
}
else {
valuelist = PyList_New(0);
if (valuelist != NULL && PyDict_SetItem(attrdict,
pyattr,
valuelist) == -1) {
Py_DECREF(valuelist);
valuelist = NULL; /* catch error later */
}
}
if (valuelist == NULL) {
Py_DECREF(pyattr);
Py_DECREF(attrdict);
Py_DECREF(result);
if (ber != NULL)
ber_free(ber, 0);
ldap_msgfree(m);
ldap_memfree(attr);
ldap_memfree(dn);
Py_XDECREF(pyctrls);
return NULL;
}
if (bvals != NULL) {
Py_ssize_t i;
for (i = 0; bvals[i]; i++) {
PyObject *valuestr;
valuestr = LDAPberval_to_object(bvals[i]);
if (valuestr == NULL ||
PyList_Append(valuelist, valuestr) == -1) {
Py_DECREF(pyattr);
Py_DECREF(attrdict);
Py_DECREF(result);
Py_XDECREF(valuestr);
Py_DECREF(valuelist);
if (ber != NULL)
ber_free(ber, 0);
ldap_msgfree(m);
ldap_memfree(attr);
ldap_memfree(dn);
Py_XDECREF(pyctrls);
return NULL;
}
Py_DECREF(valuestr);
}
ldap_value_free_len(bvals);
}
Py_DECREF(pyattr);
Py_DECREF(valuelist);
ldap_memfree(attr);
}
pydn = PyUnicode_FromString(dn);
if (pydn == NULL) {
Py_DECREF(result);
Py_DECREF(attrdict);
ldap_msgfree(m);
ldap_memfree(dn);
return NULL;
}
if (add_ctrls) {
entrytuple = Py_BuildValue("(OOO)", pydn, attrdict, pyctrls);
}
else {
entrytuple = Py_BuildValue("(OO)", pydn, attrdict);
}
Py_DECREF(pydn);
ldap_memfree(dn);
Py_DECREF(attrdict);
Py_XDECREF(pyctrls);
PyList_Append(result, entrytuple);
Py_DECREF(entrytuple);
if (ber != NULL)
ber_free(ber, 0);
}
for (entry = ldap_first_reference(ld, m);
entry != NULL; entry = ldap_next_reference(ld, entry)) {
char **refs = NULL;
PyObject *entrytuple;
PyObject *reflist = PyList_New(0);
if (reflist == NULL) {
Py_DECREF(result);
ldap_msgfree(m);
return NULL;
}
if (ldap_parse_reference(ld, entry, &refs, &serverctrls, 0) !=
LDAP_SUCCESS) {
Py_DECREF(reflist);
Py_DECREF(result);
ldap_msgfree(m);
return LDAPerror(module, ld);
}
/* convert serverctrls to list of tuples */
if (!(pyctrls = LDAPControls_to_List(serverctrls))) {
int err = LDAP_NO_MEMORY;
ldap_set_option(ld, LDAP_OPT_ERROR_NUMBER, &err);
Py_DECREF(reflist);
Py_DECREF(result);
ldap_msgfree(m);
ldap_controls_free(serverctrls);
return LDAPerror(module, ld);
}
ldap_controls_free(serverctrls);
if (refs) {
Py_ssize_t i;
for (i = 0; refs[i] != NULL; i++) {
/* A referal is a distinguishedName => unicode */
PyObject *refstr = PyUnicode_FromString(refs[i]);
if (refstr == NULL) {
Py_DECREF(reflist);
Py_DECREF(result);
ber_memvfree((void **)refs);
ldap_msgfree(m);
Py_XDECREF(pyctrls);
return NULL;
}
PyList_Append(reflist, refstr);
Py_DECREF(refstr);
}
ber_memvfree((void **)refs);
}
if (add_ctrls) {
entrytuple = Py_BuildValue("(sOO)", NULL, reflist, pyctrls);
}
else {
entrytuple = Py_BuildValue("(sO)", NULL, reflist);
}
Py_DECREF(reflist);
Py_XDECREF(pyctrls);
PyList_Append(result, entrytuple);
Py_DECREF(entrytuple);
}
if (add_intermediates) {
for (entry = ldap_first_message(ld, m);
entry != NULL; entry = ldap_next_message(ld, entry)) {
/* list of tuples */
/* each tuple is OID, Berval, controllist */
if (LDAP_RES_INTERMEDIATE == ldap_msgtype(entry)) {
PyObject *valtuple;
PyObject *valuestr;
char *retoid = 0;
PyObject *pyoid;
struct berval *retdata = 0;
if (ldap_parse_intermediate
(ld, entry, &retoid, &retdata, &serverctrls,
0) != LDAP_SUCCESS) {
Py_DECREF(result);
ldap_msgfree(m);
return LDAPerror(module, ld);
}
/* convert serverctrls to list of tuples */
if (!(pyctrls = LDAPControls_to_List(serverctrls))) {
int err = LDAP_NO_MEMORY;
ldap_set_option(ld, LDAP_OPT_ERROR_NUMBER, &err);
Py_DECREF(result);
ldap_msgfree(m);
ldap_controls_free(serverctrls);
ldap_memfree(retoid);
ber_bvfree(retdata);
return LDAPerror(module, ld);
}
ldap_controls_free(serverctrls);
valuestr = LDAPberval_to_object(retdata);
ber_bvfree(retdata);
if (valuestr == NULL) {
ldap_memfree(retoid);
Py_DECREF(pyctrls);
Py_DECREF(result);
ldap_msgfree(m);
return NULL;
}
pyoid = PyUnicode_FromString(retoid);
ldap_memfree(retoid);
if (pyoid == NULL) {
Py_DECREF(valuestr);
Py_DECREF(pyctrls);
Py_DECREF(result);
ldap_msgfree(m);
return NULL;
}
valtuple = Py_BuildValue("(NNN)", pyoid, valuestr, pyctrls);
if (valtuple == NULL) {
Py_DECREF(pyoid);
Py_DECREF(valuestr);
Py_DECREF(pyctrls);
Py_DECREF(result);
ldap_msgfree(m);
return NULL;
}
if (PyList_Append(result, valtuple) == -1) {
Py_DECREF(valtuple);
Py_DECREF(result);
ldap_msgfree(m);
return NULL;
}
Py_DECREF(valtuple);
}
}
}
ldap_msgfree(m);
return result;
}