Library import 16 (#2433)

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1 files changed, 427 insertions, 0 deletions

diff --git a/contrib/tools/python3/Modules/syslogmodule.c b/contrib/tools/python3/Modules/syslogmodule.c
new file mode 100644
index 0000000000..6db8de9c49
--- /dev/null
+++ b/contrib/tools/python3/Modules/syslogmodule.c
@@ -0,0 +1,427 @@
+/***********************************************************
+Copyright 1994 by Lance Ellinghouse,
+Cathedral City, California Republic, United States of America.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Lance Ellinghouse
+not be used in advertising or publicity pertaining to distribution
+of the software without specific, written prior permission.
+
+LANCE ELLINGHOUSE DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL LANCE ELLINGHOUSE BE LIABLE FOR ANY SPECIAL,
+INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+/******************************************************************
+
+Revision history:
+
+2010/04/20 (Sean Reifschneider)
+  - Use basename(sys.argv[0]) for the default "ident".
+  - Arguments to openlog() are now keyword args and are all optional.
+  - syslog() calls openlog() if it hasn't already been called.
+
+1998/04/28 (Sean Reifschneider)
+  - When facility not specified to syslog() method, use default from openlog()
+    (This is how it was claimed to work in the documentation)
+  - Potential resource leak of o_ident, now cleaned up in closelog()
+  - Minor comment accuracy fix.
+
+95/06/29 (Steve Clift)
+  - Changed arg parsing to use PyArg_ParseTuple.
+  - Added PyErr_Clear() call(s) where needed.
+  - Fix core dumps if user message contains format specifiers.
+  - Change openlog arg defaults to match normal syslog behavior.
+  - Plug memory leak in openlog().
+  - Fix setlogmask() to return previous mask value.
+
+******************************************************************/
+
+/* syslog module */
+
+#include "Python.h"
+#include "osdefs.h"               // SEP
+
+#include <syslog.h>
+
+/*[clinic input]
+module syslog
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=478f4ac94a1d4cae]*/
+
+#include "clinic/syslogmodule.c.h"
+
+/*  only one instance, only one syslog, so globals should be ok,
+ *  these fields are writable from the main interpreter only. */
+static PyObject *S_ident_o = NULL;  // identifier, held by openlog()
+static char S_log_open = 0;
+
+static inline int
+is_main_interpreter(void)
+{
+    return (PyInterpreterState_Get() == PyInterpreterState_Main());
+}
+
+static PyObject *
+syslog_get_argv(void)
+{
+    /* Figure out what to use for as the program "ident" for openlog().
+     * This swallows exceptions and continues rather than failing out,
+     * because the syslog module can still be used because openlog(3)
+     * is optional.
+     */
+
+    Py_ssize_t argv_len, scriptlen;
+    PyObject *scriptobj;
+    Py_ssize_t slash;
+    PyObject *argv = PySys_GetObject("argv");
+
+    if (argv == NULL) {
+        return(NULL);
+    }
+
+    argv_len = PyList_Size(argv);
+    if (argv_len == -1) {
+        PyErr_Clear();
+        return(NULL);
+    }
+    if (argv_len == 0) {
+        return(NULL);
+    }
+
+    scriptobj = PyList_GetItem(argv, 0);
+    if (scriptobj == NULL) {
+        PyErr_Clear();
+        return NULL;
+    }
+    if (!PyUnicode_Check(scriptobj)) {
+        return(NULL);
+    }
+    scriptlen = PyUnicode_GET_LENGTH(scriptobj);
+    if (scriptlen == 0) {
+        return(NULL);
+    }
+
+    slash = PyUnicode_FindChar(scriptobj, SEP, 0, scriptlen, -1);
+    if (slash == -2) {
+        PyErr_Clear();
+        return NULL;
+    }
+    if (slash != -1) {
+        return PyUnicode_Substring(scriptobj, slash + 1, scriptlen);
+    } else {
+        Py_INCREF(scriptobj);
+        return(scriptobj);
+    }
+}
+
+
+/*[clinic input]
+syslog.openlog
+
+    ident: unicode = NULL
+    logoption as logopt: long = 0
+    facility: long(c_default="LOG_USER") = LOG_USER
+
+Set logging options of subsequent syslog() calls.
+[clinic start generated code]*/
+
+static PyObject *
+syslog_openlog_impl(PyObject *module, PyObject *ident, long logopt,
+                    long facility)
+/*[clinic end generated code: output=5476c12829b6eb75 input=8a987a96a586eee7]*/
+{
+    // Since the sys.openlog changes the process level state of syslog library,
+    // this operation is only allowed for the main interpreter.
+    if (!is_main_interpreter()) {
+        PyErr_SetString(PyExc_RuntimeError, "subinterpreter can't use syslog.openlog()");
+        return NULL;
+    }
+
+    const char *ident_str = NULL;
+
+    if (ident) {
+        Py_INCREF(ident);
+    }
+    else {
+        /* get sys.argv[0] or NULL if we can't for some reason  */
+        ident = syslog_get_argv();
+    }
+
+    /* At this point, ident should be INCREF()ed.  openlog(3) does not
+     * make a copy, and syslog(3) later uses it.  We can't garbagecollect it.
+     * If NULL, just let openlog figure it out (probably using C argv[0]).
+     */
+    if (ident) {
+        ident_str = PyUnicode_AsUTF8(ident);
+        if (ident_str == NULL) {
+            Py_DECREF(ident);
+            return NULL;
+        }
+    }
+    if (PySys_Audit("syslog.openlog", "Oll", ident ? ident : Py_None, logopt, facility) < 0) {
+        Py_DECREF(ident);
+        return NULL;
+    }
+
+    openlog(ident_str, logopt, facility);
+    S_log_open = 1;
+    Py_XSETREF(S_ident_o, ident);
+
+    Py_RETURN_NONE;
+}
+
+
+
+/*[clinic input]
+syslog.syslog
+
+    [
+    priority: int(c_default="LOG_INFO") = LOG_INFO
+    ]
+
+    message: str
+
+    /
+
+Send the string message to the system logger.
+[clinic start generated code]*/
+
+static PyObject *
+syslog_syslog_impl(PyObject *module, int group_left_1, int priority,
+                   const char *message)
+/*[clinic end generated code: output=c3dbc73445a0e078 input=ac83d92b12ea3d4e]*/
+{
+    if (PySys_Audit("syslog.syslog", "is", priority, message) < 0) {
+        return NULL;
+    }
+
+    /*  if log is not opened, open it now  */
+    if (!S_log_open) {
+        if (!is_main_interpreter()) {
+            PyErr_SetString(PyExc_RuntimeError, "subinterpreter can't use syslog.syslog() "
+                                                "until the syslog is opened by the main interpreter");
+            return NULL;
+        }
+        PyObject *openlog_ret = syslog_openlog_impl(module, NULL, 0, LOG_USER);
+        if (openlog_ret == NULL) {
+            return NULL;
+        }
+        Py_DECREF(openlog_ret);
+    }
+
+    /* Incref ident, because it can be decrefed if syslog.openlog() is
+     * called when the GIL is released.
+     */
+    PyObject *ident = Py_XNewRef(S_ident_o);
+#ifdef __APPLE__
+    // gh-98178: On macOS, libc syslog() is not thread-safe
+    syslog(priority, "%s", message);
+#else
+    Py_BEGIN_ALLOW_THREADS;
+    syslog(priority, "%s", message);
+    Py_END_ALLOW_THREADS;
+#endif
+    Py_XDECREF(ident);
+    Py_RETURN_NONE;
+}
+
+
+/*[clinic input]
+syslog.closelog
+
+Reset the syslog module values and call the system library closelog().
+[clinic start generated code]*/
+
+static PyObject *
+syslog_closelog_impl(PyObject *module)
+/*[clinic end generated code: output=97890a80a24b1b84 input=fb77a54d447acf07]*/
+{
+    // Since the sys.closelog changes the process level state of syslog library,
+    // this operation is only allowed for the main interpreter.
+    if (!is_main_interpreter()) {
+        PyErr_SetString(PyExc_RuntimeError, "sunbinterpreter can't use syslog.closelog()");
+        return NULL;
+    }
+
+    if (PySys_Audit("syslog.closelog", NULL) < 0) {
+        return NULL;
+    }
+    if (S_log_open) {
+        closelog();
+        Py_CLEAR(S_ident_o);
+        S_log_open = 0;
+    }
+    Py_RETURN_NONE;
+}
+
+/*[clinic input]
+syslog.setlogmask -> long
+
+    maskpri: long
+    /
+
+Set the priority mask to maskpri and return the previous mask value.
+[clinic start generated code]*/
+
+static long
+syslog_setlogmask_impl(PyObject *module, long maskpri)
+/*[clinic end generated code: output=d6ed163917b434bf input=adff2c2b76c7629c]*/
+{
+    if (PySys_Audit("syslog.setlogmask", "l", maskpri) < 0) {
+        return -1;
+    }
+
+    return setlogmask(maskpri);
+}
+
+/*[clinic input]
+syslog.LOG_MASK -> long
+
+    pri: long
+    /
+
+Calculates the mask for the individual priority pri.
+[clinic start generated code]*/
+
+static long
+syslog_LOG_MASK_impl(PyObject *module, long pri)
+/*[clinic end generated code: output=c4a5bbfcc74c7c94 input=534829cb7fb5f7d2]*/
+{
+    return LOG_MASK(pri);
+}
+
+/*[clinic input]
+syslog.LOG_UPTO -> long
+
+    pri: long
+    /
+
+Calculates the mask for all priorities up to and including pri.
+[clinic start generated code]*/
+
+static long
+syslog_LOG_UPTO_impl(PyObject *module, long pri)
+/*[clinic end generated code: output=9eab083c90601d7e input=5e906d6c406b7458]*/
+{
+    return LOG_UPTO(pri);
+}
+
+/* List of functions defined in the module */
+
+static PyMethodDef syslog_methods[] = {
+    SYSLOG_OPENLOG_METHODDEF
+    SYSLOG_CLOSELOG_METHODDEF
+    SYSLOG_SYSLOG_METHODDEF
+    SYSLOG_SETLOGMASK_METHODDEF
+    SYSLOG_LOG_MASK_METHODDEF
+    SYSLOG_LOG_UPTO_METHODDEF
+    {NULL,              NULL,                   0}
+};
+
+
+static int
+syslog_exec(PyObject *module)
+{
+#define ADD_INT_MACRO(module, macro)                                  \
+    do {                                                              \
+        if (PyModule_AddIntConstant(module, #macro, macro) < 0) {     \
+            return -1;                                                \
+        }                                                             \
+    } while (0)
+    /* Priorities */
+    ADD_INT_MACRO(module, LOG_EMERG);
+    ADD_INT_MACRO(module, LOG_ALERT);
+    ADD_INT_MACRO(module, LOG_CRIT);
+    ADD_INT_MACRO(module, LOG_ERR);
+    ADD_INT_MACRO(module, LOG_WARNING);
+    ADD_INT_MACRO(module, LOG_NOTICE);
+    ADD_INT_MACRO(module, LOG_INFO);
+    ADD_INT_MACRO(module, LOG_DEBUG);
+
+    /* openlog() option flags */
+    ADD_INT_MACRO(module, LOG_PID);
+    ADD_INT_MACRO(module, LOG_CONS);
+    ADD_INT_MACRO(module, LOG_NDELAY);
+#ifdef LOG_ODELAY
+    ADD_INT_MACRO(module, LOG_ODELAY);
+#endif
+#ifdef LOG_NOWAIT
+    ADD_INT_MACRO(module, LOG_NOWAIT);
+#endif
+#ifdef LOG_PERROR
+    ADD_INT_MACRO(module, LOG_PERROR);
+#endif
+
+    /* Facilities */
+    ADD_INT_MACRO(module, LOG_KERN);
+    ADD_INT_MACRO(module, LOG_USER);
+    ADD_INT_MACRO(module, LOG_MAIL);
+    ADD_INT_MACRO(module, LOG_DAEMON);
+    ADD_INT_MACRO(module, LOG_AUTH);
+    ADD_INT_MACRO(module, LOG_LPR);
+    ADD_INT_MACRO(module, LOG_LOCAL0);
+    ADD_INT_MACRO(module, LOG_LOCAL1);
+    ADD_INT_MACRO(module, LOG_LOCAL2);
+    ADD_INT_MACRO(module, LOG_LOCAL3);
+    ADD_INT_MACRO(module, LOG_LOCAL4);
+    ADD_INT_MACRO(module, LOG_LOCAL5);
+    ADD_INT_MACRO(module, LOG_LOCAL6);
+    ADD_INT_MACRO(module, LOG_LOCAL7);
+
+#ifndef LOG_SYSLOG
+#define LOG_SYSLOG              LOG_DAEMON
+#endif
+#ifndef LOG_NEWS
+#define LOG_NEWS                LOG_MAIL
+#endif
+#ifndef LOG_UUCP
+#define LOG_UUCP                LOG_MAIL
+#endif
+#ifndef LOG_CRON
+#define LOG_CRON                LOG_DAEMON
+#endif
+
+    ADD_INT_MACRO(module, LOG_SYSLOG);
+    ADD_INT_MACRO(module, LOG_CRON);
+    ADD_INT_MACRO(module, LOG_UUCP);
+    ADD_INT_MACRO(module, LOG_NEWS);
+
+#ifdef LOG_AUTHPRIV
+    ADD_INT_MACRO(module, LOG_AUTHPRIV);
+#endif
+
+    return 0;
+}
+
+static PyModuleDef_Slot syslog_slots[] = {
+    {Py_mod_exec, syslog_exec},
+    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
+    {0, NULL}
+};
+
+/* Initialization function for the module */
+
+static struct PyModuleDef syslogmodule = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "syslog",
+    .m_size = 0,
+    .m_methods = syslog_methods,
+    .m_slots = syslog_slots,
+};
+
+PyMODINIT_FUNC
+PyInit_syslog(void)
+{
+    return PyModuleDef_Init(&syslogmodule);
+}