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Code

Check return values from python plugin hooks

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This commit is contained in:
James Booth 2016-08-11 00:27:14 +01:00
parent 5d6b2d0b04
commit bb676cc0fc
1 changed files with 91 additions and 57 deletions
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148
src/plugins/python_plugins.c
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@ -34,6 +34,7 @@
#include <Python.h> #include <Python.h>
#include "log.h"
#include "config.h" #include "config.h"
#include "config/preferences.h" #include "config/preferences.h"
#include "config/files.h" #include "config/files.h"
@ -47,6 +48,12 @@
static PyThreadState *thread_state; static PyThreadState *thread_state;
static GHashTable *loaded_modules; static GHashTable *loaded_modules;
static void _python_undefined_error(ProfPlugin *plugin, char *hook, char *type);
static void _python_type_error(ProfPlugin *plugin, char *hook, char *type);
static char* _handle_string_or_none_result(ProfPlugin *plugin, PyObject *result, char *hook);
static gboolean _handle_boolean_result(ProfPlugin *plugin, PyObject *result, char *hook);
void void
allow_python_threads() allow_python_threads()
{ {
@ -293,10 +300,7 @@ python_pre_chat_message_display_hook(ProfPlugin *plugin, const char *const barej
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
char *result_str = python_str_or_unicode_to_string(result); return _handle_string_or_none_result(plugin, result, "prof_pre_chat_message_display");
allow_python_threads();
return result_str;
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -341,10 +345,7 @@ python_pre_chat_message_send_hook(ProfPlugin *plugin, const char * const barejid
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
char *result_str = python_str_or_unicode_to_string(result); return _handle_string_or_none_result(plugin, result, "prof_pre_chat_message_send");
allow_python_threads();
return result_str;
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -389,10 +390,7 @@ python_pre_room_message_display_hook(ProfPlugin *plugin, const char * const bare
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
char *result_str = python_str_or_unicode_to_string(result); return _handle_string_or_none_result(plugin, result, "prof_pre_room_message_display");
allow_python_threads();
return result_str;
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -438,10 +436,7 @@ python_pre_room_message_send_hook(ProfPlugin *plugin, const char *const barejid,
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
char *result_str = python_str_or_unicode_to_string(result); return _handle_string_or_none_result(plugin, result, "prof_pre_room_message_send");
allow_python_threads();
return result_str;
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -509,10 +504,7 @@ python_pre_priv_message_display_hook(ProfPlugin *plugin, const char *const barej
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
char *result_str = python_str_or_unicode_to_string(result); return _handle_string_or_none_result(plugin, result, "prof_pre_priv_message_display");
allow_python_threads();
return result_str;
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -559,10 +551,7 @@ python_pre_priv_message_send_hook(ProfPlugin *plugin, const char *const barejid,
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
char *result_str = python_str_or_unicode_to_string(result); return _handle_string_or_none_result(plugin, result, "prof_pre_priv_message_send");
allow_python_threads();
return result_str;
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -608,10 +597,7 @@ python_on_message_stanza_send_hook(ProfPlugin *plugin, const char *const text)
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
char *result_str = python_str_or_unicode_to_string(result); return _handle_string_or_none_result(plugin, result, "prof_on_message_stanza_send");
allow_python_threads();
return result_str;
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -635,13 +621,7 @@ python_on_message_stanza_receive_hook(ProfPlugin *plugin, const char *const text
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
if (PyObject_IsTrue(result)) { return _handle_boolean_result(plugin, result, "prof_on_message_stanza_receive");
allow_python_threads();
return TRUE;
} else {
allow_python_threads();
return FALSE;
}
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -665,10 +645,7 @@ python_on_presence_stanza_send_hook(ProfPlugin *plugin, const char *const text)
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
char *result_str = python_str_or_unicode_to_string(result); return _handle_string_or_none_result(plugin, result, "prof_on_presence_stanza_send");
allow_python_threads();
return result_str;
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -692,13 +669,7 @@ python_on_presence_stanza_receive_hook(ProfPlugin *plugin, const char *const tex
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
if (PyObject_IsTrue(result)) { return _handle_boolean_result(plugin, result, "prof_on_presence_stanza_receive");
allow_python_threads();
return TRUE;
} else {
allow_python_threads();
return FALSE;
}
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -722,10 +693,7 @@ python_on_iq_stanza_send_hook(ProfPlugin *plugin, const char *const text)
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
char *result_str = python_str_or_unicode_to_string(result); return _handle_string_or_none_result(plugin, result, "prof_on_iq_stanza_send");
allow_python_threads();
return result_str;
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -749,13 +717,7 @@ python_on_iq_stanza_receive_hook(ProfPlugin *plugin, const char *const text)
python_check_error(); python_check_error();
Py_XDECREF(p_function); Py_XDECREF(p_function);
Py_XDECREF(p_args); Py_XDECREF(p_args);
if (PyObject_IsTrue(result)) { return _handle_boolean_result(plugin, result, "prof_on_iq_stanza_receive");
allow_python_threads();
return TRUE;
} else {
allow_python_threads();
return FALSE;
}
} }
} }
Py_XDECREF(p_args); Py_XDECREF(p_args);
@ -876,3 +838,75 @@ python_shutdown(void)
g_hash_table_destroy(loaded_modules); g_hash_table_destroy(loaded_modules);
Py_Finalize(); Py_Finalize();
} }
static void
_python_undefined_error(ProfPlugin *plugin, char *hook, char *type)
{
GString *err_msg = g_string_new("Plugin error - ");
char *module_name = g_strndup(plugin->name, strlen(plugin->name) - 2);
g_string_append(err_msg, module_name);
free(module_name);
g_string_append(err_msg, hook);
g_string_append(err_msg, "(): return value undefined, expected ");
g_string_append(err_msg, type);
log_error(err_msg->str);
cons_show_error(err_msg->str);
g_string_free(err_msg, TRUE);
}
static void
_python_type_error(ProfPlugin *plugin, char *hook, char *type)
{
GString *err_msg = g_string_new("Plugin error - ");
char *module_name = g_strndup(plugin->name, strlen(plugin->name) - 2);
g_string_append(err_msg, module_name);
free(module_name);
g_string_append(err_msg, hook);
g_string_append(err_msg, "(): incorrect return type, expected ");
g_string_append(err_msg, type);
log_error(err_msg->str);
cons_show_error(err_msg->str);
g_string_free(err_msg, TRUE);
}
static char*
_handle_string_or_none_result(ProfPlugin *plugin, PyObject *result, char *hook)
{
if (result == NULL) {
allow_python_threads();
_python_undefined_error(plugin, hook, "string, unicode or None");
return NULL;
}
#if PY_MAJOR_VERSION >= 3
if (result != Py_None && !PyUnicode_Check(result) && !PyBytes_Check(result)) {
allow_python_threads();
_python_type_error(plugin, hook, "string, unicode or None");
return NULL;
}
#else
if (result != Py_None && !PyUnicode_Check(result) && !PyString_Check(result)) {
allow_python_threads();
_python_type_error(plugin, hook, "string, unicode or None");
return NULL;
}
#endif
char *result_str = python_str_or_unicode_to_string(result);
allow_python_threads();
return result_str;
}
static gboolean
_handle_boolean_result(ProfPlugin *plugin, PyObject *result, char *hook)
{
if (result == NULL) {
allow_python_threads();
_python_undefined_error(plugin, hook, "boolean");
return TRUE;
}
if (PyObject_IsTrue(result)) {
allow_python_threads();
return TRUE;
}
allow_python_threads();
return FALSE;
}