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Copy pathconstants.c
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280 lines (233 loc) · 7.91 KB
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/* constants defined for LDAP
* See https://www.python-ldap.org/ for details. */
#include "pythonldap.h"
/* the base exception class */
PyObject *LDAPexception_class;
/* list of exception classes */
#define LDAP_ERROR_MIN LDAP_REFERRAL_LIMIT_EXCEEDED
#ifdef LDAP_PROXIED_AUTHORIZATION_DENIED
#define LDAP_ERROR_MAX LDAP_PROXIED_AUTHORIZATION_DENIED
#else
#ifdef LDAP_ASSERTION_FAILED
#define LDAP_ERROR_MAX LDAP_ASSERTION_FAILED
#else
#define LDAP_ERROR_MAX LDAP_OTHER
#endif
#endif
#define LDAP_ERROR_OFFSET -LDAP_ERROR_MIN
static PyObject *errobjects[LDAP_ERROR_MAX - LDAP_ERROR_MIN + 1];
/* Convert a bare LDAP error number into an exception */
PyObject *
LDAPerr(int errnum)
{
if (errnum >= LDAP_ERROR_MIN && errnum <= LDAP_ERROR_MAX &&
errobjects[errnum + LDAP_ERROR_OFFSET] != NULL) {
PyErr_SetNone(errobjects[errnum + LDAP_ERROR_OFFSET]);
}
else {
PyObject *args = Py_BuildValue("{s:i}", "errnum", errnum);
if (args == NULL)
return NULL;
PyErr_SetObject(LDAPexception_class, args);
Py_DECREF(args);
}
return NULL;
}
/* Convert an LDAP error into an informative python exception */
PyObject *
LDAPraise_for_message(LDAP *l, LDAPMessage *m)
{
if (l == NULL) {
PyErr_SetFromErrno(LDAPexception_class);
ldap_msgfree(m);
return NULL;
}
else {
int myerrno, errnum, opt_errnum, msgid = -1, msgtype = 0;
PyObject *errobj;
PyObject *info;
PyObject *str;
PyObject *pyerrno;
PyObject *pyresult;
PyObject *pyctrls = NULL;
char *matched = NULL, *error = NULL, **refs = NULL;
LDAPControl **serverctrls = NULL;
/* at first save errno for later use before it gets overwritten by another call */
myerrno = errno;
if (m != NULL) {
msgid = ldap_msgid(m);
msgtype = ldap_msgtype(m);
ldap_parse_result(l, m, &errnum, &matched, &error, &refs,
&serverctrls, 1);
}
if (msgtype <= 0) {
opt_errnum = ldap_get_option(l, LDAP_OPT_ERROR_NUMBER, &errnum);
if (opt_errnum != LDAP_OPT_SUCCESS)
errnum = opt_errnum;
if (errnum == LDAP_NO_MEMORY) {
return PyErr_NoMemory();
}
ldap_get_option(l, LDAP_OPT_MATCHED_DN, &matched);
ldap_get_option(l, LDAP_OPT_ERROR_STRING, &error);
}
if (errnum >= LDAP_ERROR_MIN && errnum <= LDAP_ERROR_MAX &&
errobjects[errnum + LDAP_ERROR_OFFSET] != NULL) {
errobj = errobjects[errnum + LDAP_ERROR_OFFSET];
}
else {
errobj = LDAPexception_class;
}
info = PyDict_New();
if (info == NULL) {
ldap_memfree(matched);
ldap_memfree(error);
ldap_memvfree((void **)refs);
ldap_controls_free(serverctrls);
return NULL;
}
if (msgtype > 0) {
pyresult = PyLong_FromLong(msgtype);
if (pyresult)
PyDict_SetItemString(info, "msgtype", pyresult);
Py_XDECREF(pyresult);
}
if (msgid >= 0) {
pyresult = PyLong_FromLong(msgid);
if (pyresult)
PyDict_SetItemString(info, "msgid", pyresult);
Py_XDECREF(pyresult);
}
pyresult = PyLong_FromLong(errnum);
if (pyresult)
PyDict_SetItemString(info, "result", pyresult);
Py_XDECREF(pyresult);
str = PyUnicode_FromString(ldap_err2string(errnum));
if (str)
PyDict_SetItemString(info, "desc", str);
Py_XDECREF(str);
if (myerrno != 0) {
pyerrno = PyLong_FromLong(myerrno);
if (pyerrno)
PyDict_SetItemString(info, "errno", pyerrno);
Py_XDECREF(pyerrno);
}
if (!(pyctrls = LDAPControls_to_List(serverctrls))) {
int err = LDAP_NO_MEMORY;
Py_DECREF(info);
ldap_set_option(l, LDAP_OPT_ERROR_NUMBER, &err);
ldap_memfree(matched);
ldap_memfree(error);
ldap_memvfree((void **)refs);
ldap_controls_free(serverctrls);
return PyErr_NoMemory();
}
ldap_controls_free(serverctrls);
PyDict_SetItemString(info, "ctrls", pyctrls);
Py_XDECREF(pyctrls);
if (matched != NULL) {
if (*matched != '\0') {
str = PyUnicode_FromString(matched);
if (str)
PyDict_SetItemString(info, "matched", str);
Py_XDECREF(str);
}
ldap_memfree(matched);
}
if (errnum == LDAP_REFERRAL && refs != NULL && refs[0] != NULL) {
/* Keep old behaviour, overshadow error message */
char err[1024];
snprintf(err, sizeof(err), "Referral:\n%s", refs[0]);
str = PyUnicode_FromString(err);
PyDict_SetItemString(info, "info", str);
Py_XDECREF(str);
}
else if (error != NULL && *error != '\0') {
str = PyUnicode_FromString(error);
if (str)
PyDict_SetItemString(info, "info", str);
Py_XDECREF(str);
}
PyErr_SetObject(errobj, info);
Py_DECREF(info);
ldap_memvfree((void **)refs);
ldap_memfree(error);
return NULL;
}
}
PyObject *
LDAPerror(LDAP *l)
{
return LDAPraise_for_message(l, NULL);
}
/* initialise the module constants */
int
LDAPinit_constants(PyObject *m)
{
PyObject *exc, *nobj;
struct ldap_apifeature_info info = { 1, "X_OPENLDAP_THREAD_SAFE", 0 };
int thread_safe = 0;
/* simple constants */
if (PyModule_AddIntConstant(m, "OPT_ON", 1) != 0)
return -1;
if (PyModule_AddIntConstant(m, "OPT_OFF", 0) != 0)
return -1;
/* exceptions */
LDAPexception_class = PyErr_NewException("ldap.LDAPError", NULL, NULL);
if (LDAPexception_class == NULL) {
return -1;
}
if (PyModule_AddObject(m, "LDAPError", LDAPexception_class) != 0)
goto error;
Py_INCREF(LDAPexception_class);
/* XXX - backward compatibility with pre-1.8 */
if (PyModule_AddObject(m, "error", LDAPexception_class) != 0)
goto error;
Py_INCREF(LDAPexception_class);
#ifdef LDAP_API_FEATURE_X_OPENLDAP_THREAD_SAFE
if (ldap_get_option(NULL, LDAP_OPT_API_FEATURE_INFO, &info) == LDAP_SUCCESS) {
thread_safe = (info.ldapaif_version == 1);
}
#endif
if (PyModule_AddIntConstant(m, "LIBLDAP_R", thread_safe) != 0)
goto error;
if (ldap_get_option(NULL, LDAP_OPT_API_INFO, &ldap_version_info) != LDAP_SUCCESS) {
PyErr_SetString(PyExc_ImportError, "unrecognised libldap version");
goto error;
}
if (PyModule_AddIntConstant(m, "_VENDOR_VERSION_RUNTIME",
ldap_version_info.ldapai_vendor_version ) != 0)
goto error;
/* Generated constants -- see Lib/ldap/constants.py */
#define add_err(n) do { \
exc = PyErr_NewException("ldap." #n, LDAPexception_class, NULL); \
if (exc == NULL) goto error; \
nobj = PyLong_FromLong(LDAP_##n); \
if (nobj == NULL) { \
Py_DECREF(exc); \
goto error; \
} \
if (PyObject_SetAttrString(exc, "errnum", nobj) != 0) { \
Py_DECREF(nobj); \
Py_DECREF(exc); \
goto error; \
} \
Py_DECREF(nobj); \
errobjects[LDAP_##n+LDAP_ERROR_OFFSET] = exc; \
if (PyModule_AddObject(m, #n, exc) != 0) { \
Py_DECREF(exc); \
goto error; \
} \
Py_INCREF(exc); \
} while (0)
#define add_int(n) do { \
if (PyModule_AddIntConstant(m, #n, LDAP_##n) != 0) goto error; \
} while (0)
#define add_string(n) do { \
if (PyModule_AddStringConstant(m, #n, LDAP_##n) != 0) goto error; \
} while (0)
#include "constants_generated.h"
return 0;
error:
Py_CLEAR(LDAPexception_class);
return -1;
}