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1714 lines (1477 loc) · 46 KB
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/* ====================================================================
* Copyright (c) 2000 Gregory Trubetskoy. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgment: "This product
* includes software developed by Gregory Trubetskoy."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "mod_python", "modpython" or "Gregory Trubetskoy" must not
* be used to endorse or promote products derived from this software
* without prior written permission. For written permission, please
* contact grisha@modpython.org.
*
* 5. Products derived from this software may not be called "mod_python"
* or "modpython", nor may "mod_python" or "modpython" appear in their
* names without prior written permission of Gregory Trubetskoy.
*
* THIS SOFTWARE IS PROVIDED BY GREGORY TRUBETSKOY ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GREGORY TRUBETSKOY OR
* HIS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* mod_python.c
*
* $Id: mod_python.c,v 1.52 2001/05/28 20:00:41 gtrubetskoy Exp $
*
* See accompanying documentation and source code comments
* for details.
*
*/
#include "mod_python.h"
/* List of available Python obCallBacks/Interpreters
* (In a Python dictionary) */
static PyObject * interpreters = NULL;
/* list of modules to be imported from PythonImport */
static table *python_imports = NULL;
pool *child_init_pool = NULL;
/**
** make_interpreter
**
* Creates a new Python interpeter.
*/
PyInterpreterState *make_interpreter(const char *name, server_rec *srv)
{
PyThreadState *tstate;
/* create a new interpeter */
tstate = Py_NewInterpreter();
if (! tstate) {
if (srv) {
/* couldn't create an interpreter, this is bad */
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, srv,
"make_interpreter: Py_NewInterpreter() returned NULL. No more memory?");
}
return NULL;
}
else {
/* release the thread state */
PyThreadState_Swap(NULL);
/* Strictly speaking we don't need that tstate created
* by Py_NewInterpreter but is preferable to waste it than re-write
* a cousin to Py_NewInterpreter
* XXX (maybe we can destroy it?)
*/
return tstate->interp;
}
}
/**
** get_interpreter_data
**
* Get interpreter given its name.
* NOTE: Lock must be acquired prior to entering this function.
*/
interpreterdata *get_interpreter_data(const char *name, server_rec *srv)
{
PyObject *p;
interpreterdata *idata = NULL;
if (! name)
name = MAIN_INTERPRETER;
p = PyDict_GetItemString(interpreters, (char *)name);
if (!p)
{
PyInterpreterState *istate = make_interpreter(name, srv);
if (istate) {
idata = (interpreterdata *)malloc(sizeof(interpreterdata));
idata->istate = istate;
/* obcallback will be created on first use */
idata->obcallback = NULL;
p = PyCObject_FromVoidPtr((void *) idata, NULL);
PyDict_SetItemString(interpreters, (char *)name, p);
}
}
else {
idata = (interpreterdata *)PyCObject_AsVoidPtr(p);
}
return idata;
}
/**
** python_cleanup
**
* This function gets called for clean ups registered
* with register_cleanup(). Clean ups registered via
* PythonCleanupHandler run in python_cleanup_handler()
* below.
*/
void python_cleanup(void *data)
{
interpreterdata *idata;
PyThreadState *tstate;
cleanup_info *ci = (cleanup_info *)data;
#ifdef WITH_THREAD
/* acquire lock (to protect the interpreters dictionary) */
PyEval_AcquireLock();
#endif
/* get/create interpreter */
if (ci->request_rec)
idata = get_interpreter_data(ci->interpreter, ci->request_rec->server);
else
idata = get_interpreter_data(ci->interpreter, ci->server_rec);
#ifdef WITH_THREAD
/* release the lock */
PyEval_ReleaseLock();
#endif
if (!idata) {
if (ci->request_rec)
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, ci->request_rec,
"python_cleanup: get_interpreter_data returned NULL!");
else
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, ci->server_rec,
"python_cleanup: get_interpreter_data returned NULL!");
Py_DECREF(ci->handler);
Py_XDECREF(ci->data);
free(ci);
return;
}
/* create thread state and acquire lock */
tstate = PyThreadState_New(idata->istate);
#ifdef WITH_THREAD
PyEval_AcquireThread(tstate);
#else
PyThreadState_Swap(tstate);
#endif
/*
* Call the cleanup function.
*/
if (! PyObject_CallFunction(ci->handler, "O", ci->data)) {
PyObject *ptype;
PyObject *pvalue;
PyObject *ptb;
PyObject *handler;
PyObject *stype;
PyObject *svalue;
PyErr_Fetch(&ptype, &pvalue, &ptb);
handler = PyObject_Str(ci->handler);
stype = PyObject_Str(ptype);
svalue = PyObject_Str(pvalue);
Py_XDECREF(ptype);
Py_XDECREF(pvalue);
Py_XDECREF(ptb);
if (ci->request_rec) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, ci->request_rec,
"python_cleanup: Error calling cleanup object %s",
PyString_AsString(handler));
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, ci->request_rec,
" %s: %s", PyString_AsString(stype),
PyString_AsString(svalue));
}
else {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, ci->server_rec,
"python_cleanup: Error calling cleanup object %s",
PyString_AsString(handler));
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, ci->server_rec,
" %s: %s", PyString_AsString(stype),
PyString_AsString(svalue));
}
Py_DECREF(handler);
Py_DECREF(stype);
Py_DECREF(svalue);
}
/* release the lock and destroy tstate*/
/* XXX Do not use
* . PyEval_ReleaseThread(tstate);
* . PyThreadState_Delete(tstate);
* because PyThreadState_delete should be done under
* interpreter lock to work around a bug in 1.5.2 (see patch to pystate.c 2.8->2.9)
*/
PyThreadState_Swap(NULL);
PyThreadState_Delete(tstate);
#ifdef WITH_THREAD
PyEval_ReleaseLock();
#endif
Py_DECREF(ci->handler);
Py_DECREF(ci->data);
free(ci);
return;
}
/**
** python_init()
**
* Called at Apache mod_python initialization time.
*/
void python_init(server_rec *s, pool *p)
{
char buff[255];
/* pool given to us in ChildInit. We use it for
server.register_cleanup() */
pool *child_init_pool = NULL;
/* mod_python version */
ap_add_version_component(VERSION_COMPONENT);
/* Python version */
sprintf(buff, "Python/%s", strtok((char *)Py_GetVersion(), " "));
ap_add_version_component(buff);
/* initialize global Python interpreter if necessary */
if (! Py_IsInitialized())
{
/* initialze the interpreter */
Py_Initialize();
#ifdef WITH_THREAD
/* create and acquire the interpreter lock */
PyEval_InitThreads();
#endif
/* Release the thread state because we will never use
* the main interpreter, only sub interpreters created later. */
PyThreadState_Swap(NULL);
/* create the obCallBack dictionary */
interpreters = PyDict_New();
if (! interpreters) {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, s,
"python_init: PyDict_New() failed! No more memory?");
exit(1);
}
#ifdef WITH_THREAD
/* release the lock; now other threads can run */
PyEval_ReleaseLock();
#endif
}
}
/**
** python_create_dir_config
**
* Allocate memory and initialize the strucure that will
* hold configuration parametes.
*
* This function is called on every hit it seems.
*/
static void *python_create_dir_config(pool *p, char *dir)
{
py_dir_config *conf =
(py_dir_config *) ap_pcalloc(p, sizeof(py_dir_config));
conf->authoritative = 1;
/* make sure directory ends with a slash */
if (dir && (dir[strlen(dir) - 1] != SLASH))
conf->config_dir = ap_pstrcat(p, dir, SLASH_S, NULL);
else
conf->config_dir = ap_pstrdup(p, dir);
conf->options = ap_make_table(p, 4);
conf->directives = ap_make_table(p, 4);
conf->dirs = ap_make_table(p, 4);
return conf;
}
/**
** mp_copy_table
**
* Merge two tables into one. Matching key values
* in second overlay the first.
*/
void mp_copy_table(table *t1, table *t2)
{
array_header *ah;
table_entry *elts;
int i;
ah = ap_table_elts(t2);
elts = (table_entry *)ah->elts;
i = ah->nelts;
while (i--)
if (elts[i].key)
ap_table_set(t1, elts[i].key, elts[i].val);
}
/**
** python_merge_dir_config
**
*/
static void *python_merge_dir_config(pool *p, void *cc, void *nc)
{
py_dir_config *merged_conf = (py_dir_config *) ap_pcalloc(p, sizeof(py_dir_config));
py_dir_config *current_conf = (py_dir_config *) cc;
py_dir_config *new_conf = (py_dir_config *) nc;
/* we basically allow the local configuration to override global,
* by first copying current values and then new values on top
*/
/** create **/
merged_conf->directives = ap_make_table(p, 4);
merged_conf->dirs = ap_make_table(p, 16);
merged_conf->options = ap_make_table(p, 16);
/** copy current **/
merged_conf->authoritative = current_conf->authoritative;
merged_conf->config_dir = ap_pstrdup(p, current_conf->config_dir);
mp_copy_table(merged_conf->directives, current_conf->directives);
mp_copy_table(merged_conf->dirs, current_conf->dirs);
mp_copy_table(merged_conf->options, current_conf->options);
/** copy new **/
if (new_conf->authoritative != merged_conf->authoritative)
merged_conf->authoritative = new_conf->authoritative;
if (new_conf->config_dir)
merged_conf->config_dir = ap_pstrdup(p, new_conf->config_dir);
mp_copy_table(merged_conf->directives, new_conf->directives);
mp_copy_table(merged_conf->dirs, new_conf->dirs);
mp_copy_table(merged_conf->options, new_conf->options);
return (void *) merged_conf;
}
/**
** python_directive
**
* Called by Python*Handler directives.
*
* When used within the same directory, this will have a
* cumulative, rather than overriding effect - i.e. values
* from same directives specified multiple times will be appended
* with a space in between.
*
*/
static const char *python_directive(cmd_parms *cmd, void * mconfig,
char *key, const char *val)
{
py_dir_config *conf;
const char *s;
conf = (py_dir_config *) mconfig;
if (! val) {
/* If the value is NULL, then assume this is an "Off" FLAG
and erase the directive from the config. */
ap_table_unset(conf->directives, key);
ap_table_unset(conf->dirs, key);
}
else {
/* something there already? */
s = ap_table_get(conf->directives, key);
if (s)
val = ap_pstrcat(cmd->pool, s, " ", val, NULL);
ap_table_set(conf->directives, key, val);
/* remember the directory where the directive was found */
if (conf->config_dir) {
ap_table_set(conf->dirs, key, conf->config_dir);
}
else {
ap_table_set(conf->dirs, key, "");
}
}
return NULL;
}
/**
** make_obcallback
**
* This function instantiates an obCallBack object.
* NOTE: The obCallBack object is instantiated by Python
* code. This C module calls into Python code which returns
* the reference to obCallBack.
*/
PyObject * make_obcallback()
{
PyObject *m;
PyObject *obCallBack = NULL;
/* This makes _apache appear imported, and subsequent
* >>> import _apache
* will not give an error.
*/
/* Py_InitModule("_apache", _apache_module_methods); */
init_apache();
/* Now execute the equivalent of
* >>> import <module>
* >>> <initstring>
* in the __main__ module to start up Python.
*/
if (! ((m = PyImport_ImportModule(MODULENAME)))) {
fprintf(stderr, "make_obcallback(): could not import %s.\n", MODULENAME);
}
if (! ((obCallBack = PyObject_CallMethod(m, INITFUNC, NULL)))) {
fprintf(stderr, "make_obcallback(): could not call %s.\n",
INITFUNC);
}
return obCallBack;
}
/**
** get_request_object
**
* This creates or retrieves a previously created request object.
* The pointer to request object is stored in req->request_config.
*/
static requestobject *get_request_object(request_rec *req)
{
requestobject *request_obj;
PyThreadState *_save;
/* see if there is a request object already */
request_obj = (requestobject *) ap_get_module_config(req->request_config,
&python_module);
if (request_obj) {
return request_obj;
}
else {
if ((req->path_info) &&
(req->path_info[strlen(req->path_info) - 1] == SLASH))
{
int i;
i = strlen(req->path_info);
/* take out the slash */
req->path_info[i - 1] = 0;
_save = PyEval_SaveThread();
ap_add_cgi_vars(req);
PyEval_RestoreThread(_save);
request_obj = (requestobject *)MpRequest_FromRequest(req);
/* put the slash back in */
req->path_info[i - 1] = SLASH;
req->path_info[i] = 0;
/* and also make PATH_INFO == req->subprocess_env */
ap_table_set(req->subprocess_env, "PATH_INFO", req->path_info);
}
else
{
_save = PyEval_SaveThread();
ap_add_cgi_vars(req);
PyEval_RestoreThread(_save);
request_obj = (requestobject *)MpRequest_FromRequest(req);
}
/* store the pointer to this object in request_config */
ap_set_module_config(req->request_config, &python_module, request_obj);
return request_obj;
}
}
/**
** python_handler
**
* A generic python handler. Most handlers should use this.
*/
static int python_handler(request_rec *req, char *handler)
{
PyObject *resultobject = NULL;
interpreterdata *idata;
requestobject *request_obj;
const char *s;
py_dir_config * conf;
int result;
const char * interpreter = NULL;
PyThreadState *tstate;
/* get configuration */
conf = (py_dir_config *) ap_get_module_config(req->per_dir_config, &python_module);
/* is there a handler? */
if (! ap_table_get(conf->directives, "PythonHandlerModule")) {
if (! ap_table_get(conf->directives, handler)) {
if (! ap_table_get(req->notes, handler))
return DECLINED;
}
}
/*
* determine interpreter to use
*/
if ((s = ap_table_get(conf->directives, "PythonInterpreter"))) {
/* forced by configuration */
interpreter = s;
}
else {
if ((s = ap_table_get(conf->directives, "PythonInterpPerDirectory"))) {
/* base interpreter on directory where the file is found */
if (ap_is_directory(req->filename))
interpreter = ap_make_dirstr_parent(req->pool,
ap_pstrcat(req->pool, req->filename,
SLASH_S, NULL ));
else {
if (req->filename)
interpreter = ap_make_dirstr_parent(req->pool, req->filename);
else
/*
* In early stages of the request, req->filename is not known,
* so this would have to run in the global interpreter.
*/
interpreter = NULL;
}
}
else if (ap_table_get(conf->directives, "PythonInterpPerDirective")) {
/*
* base interpreter name on directory where the handler directive
* was last found. If it was in http.conf, then we will use the
* global interpreter.
*/
s = ap_table_get(conf->dirs, handler);
if (! s) {
/* are we using PythonHandlerModule? */
s = ap_table_get(conf->dirs, "PythonHandlerModule");
if (! s) {
/* this one must have been added via req.add_handler() */
char * ss = ap_pstrcat(req->pool, handler, "_dir", NULL);
s = ap_table_get(req->notes, ss);
}
}
if (strcmp(s, "") == 0)
interpreter = NULL;
else
interpreter = s;
}
else {
/* - default per server - */
interpreter = req->server->server_hostname;
}
}
#ifdef WITH_THREAD
/* acquire lock (to protect the interpreters dictionary) */
PyEval_AcquireLock();
#endif
/* get/create interpreter */
idata = get_interpreter_data(interpreter, req->server);
#ifdef WITH_THREAD
/* release the lock */
PyEval_ReleaseLock();
#endif
if (!idata) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, req,
"python_handler: get_interpreter_data returned NULL!");
return HTTP_INTERNAL_SERVER_ERROR;
}
/* create thread state and acquire lock */
tstate = PyThreadState_New(idata->istate);
#ifdef WITH_THREAD
PyEval_AcquireThread(tstate);
#else
PyThreadState_Swap(tstate);
#endif
if (!idata->obcallback) {
idata->obcallback = make_obcallback();
/* we must have a callback object to succeed! */
if (!idata->obcallback)
{
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, req,
"python_handler: make_obcallback returned no obCallBack!");
PyThreadState_Swap(NULL);
PyThreadState_Delete(tstate);
#ifdef WITH_THREAD
PyEval_ReleaseLock();
#endif
return HTTP_INTERNAL_SERVER_ERROR;
}
}
/*
* make a note of which subinterpreter we're running under.
* this information is used by register_cleanup()
*/
if (interpreter)
ap_table_set(req->notes, "python_interpreter", interpreter);
else
ap_table_set(req->notes, "python_interpreter", MAIN_INTERPRETER);
/* create/acquire request object */
request_obj = get_request_object(req);
/* make a note of which handler we are in right now */
ap_table_set(req->notes, "python_handler", handler);
/* put the list of handlers on the hstack */
if ((s = ap_table_get(conf->directives, handler))) {
request_obj->hstack = ap_pstrdup(req->pool, ap_table_get(conf->directives,
handler));
}
if ((s = ap_table_get(conf->directives, "PythonHandlerModule"))) {
if (request_obj->hstack)
request_obj->hstack = ap_pstrcat(req->pool, request_obj->hstack,
" ", s, NULL);
else
request_obj->hstack = ap_pstrdup(req->pool, s);
}
if ((s = ap_table_get(req->notes, handler))) {
if (request_obj->hstack)
request_obj->hstack = ap_pstrcat(req->pool, request_obj->hstack,
" ", s, NULL);
else
request_obj->hstack = ap_pstrdup(req->pool, s);
}
/*
* Here is where we call into Python!
* This is the C equivalent of
* >>> resultobject = obCallBack.Dispatch(request_object, handler)
*/
resultobject = PyObject_CallMethod(idata->obcallback, "Dispatch", "Os",
request_obj, handler);
/* release the lock and destroy tstate*/
/* XXX Do not use
* . PyEval_ReleaseThread(tstate);
* . PyThreadState_Delete(tstate);
* because PyThreadState_delete should be done under
* interpreter lock to work around a bug in 1.5.2 (see patch to pystate.c 2.8->2.9)
*/
PyThreadState_Swap(NULL);
PyThreadState_Delete(tstate);
#ifdef WITH_THREAD
PyEval_ReleaseLock();
#endif
if (! resultobject) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, req,
"python_handler: Dispatch() returned nothing.");
return HTTP_INTERNAL_SERVER_ERROR;
}
else {
/* Attempt to analyze the result as a string indicating which
result to return */
if (! PyInt_Check(resultobject)) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, req,
"python_handler: Dispatch() returned non-integer.");
return HTTP_INTERNAL_SERVER_ERROR;
}
else {
result = PyInt_AsLong(resultobject);
/* authen handlers need one more thing
* if authentication failed and this handler is not
* authoritative, let the others handle it
*/
if (strcmp(handler, "PythonAuthenHandler") == 0) {
if (result == HTTP_UNAUTHORIZED)
{
if (! conf->authoritative)
result = DECLINED;
else {
/*
* This will insert a WWW-Authenticate header
* to let the browser know that we are using
* Basic authentication. This function does check
* to make sure that auth is indeed Basic, no
* need to do that here.
*/
ap_note_basic_auth_failure(req);
}
}
}
}
}
/* When the script sets an error status by using req.status,
* it can then either provide its own HTML error message or have
* Apache provide one. To have Apache provide one, you need to send
* no output and return the error from the handler function. However,
* if the script is providing HTML, then the return value of the
* handler should be OK, else the user will get both the script
* output and the Apache output.
*/
/* Another note on status. req->status is used to build req->status_line
* unless status_line is not NULL. req->status has no effect on how the
* server will behave. The error behaviour is dictated by the return
* value of this handler. When the handler returns anything other than OK,
* the server will display the error that matches req->status, unless it is
* 200 (HTTP_OK), in which case it will just show the error matching the return
* value. If the req->status and the return of the handle do not match,
* then the server will first show what req->status shows, then it will
* print "Additionally, X error was recieved", where X is the return code
* of the handle. If the req->status or return code is a weird number that the
* server doesn't know, it will default to 500 Internal Server Error.
*/
/* clean up */
Py_XDECREF(resultobject);
/* return the translated result (or default result) to the Server. */
return result;
}
/**
** python_cleanup_handler
**
* Runs handler registered via PythonCleanupHandler. Clean ups
* registered via register_cleanup() run in python_cleanup() above.
*
* This is a little too similar to python_handler, except the
* return of the function doesn't matter.
*/
void python_cleanup_handler(void *data)
{
request_rec *req = (request_rec *)data;
char *handler = "PythonCleanupHandler";
interpreterdata *idata;
requestobject *request_obj;
const char *s;
py_dir_config * conf;
const char * interpreter = NULL;
PyThreadState *tstate;
/* get configuration */
conf = (py_dir_config *) ap_get_module_config(req->per_dir_config, &python_module);
/* is there a handler? */
if (! ap_table_get(conf->directives, handler)) {
return;
}
/*
* determine interpreter to use
*/
if ((s = ap_table_get(conf->directives, "PythonInterpreter"))) {
/* forced by configuration */
interpreter = s;
}
else {
if ((s = ap_table_get(conf->directives, "PythonInterpPerDirectory"))) {
/* base interpreter on directory where the file is found */
if (ap_is_directory(req->filename))
interpreter = ap_make_dirstr_parent(req->pool,
ap_pstrcat(req->pool,
req->filename,
SLASH_S, NULL ));
else {
if (req->filename)
interpreter = ap_make_dirstr_parent(req->pool, req->filename);
else
/* very rare case, use global interpreter */
interpreter = NULL;
}
}
else if (ap_table_get(conf->directives, "PythonInterpPerDirective")) {
/*
* base interpreter name on directory where the handler directive
* was last found. If it was in http.conf, then we will use the
* global interpreter.
*/
s = ap_table_get(conf->dirs, handler);
if (strcmp(s, "") == 0)
interpreter = NULL;
else
interpreter = s;
}
else {
/* - default per server - */
interpreter = req->server->server_hostname;
}
}
#ifdef WITH_THREAD
/* acquire lock (to protect the interpreters dictionary) */
PyEval_AcquireLock();
#endif
/* get/create interpreter */
idata = get_interpreter_data(interpreter, req->server);
#ifdef WITH_THREAD
/* release the lock */
PyEval_ReleaseLock();
#endif
if (!idata) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, req,
"python_cleanup_handler: get_interpreter_data returned NULL!");
return;
}
/* create thread state and acquire lock */
tstate = PyThreadState_New(idata->istate);
#ifdef WITH_THREAD
PyEval_AcquireThread(tstate);
#else
PyThreadState_Swap(tstate);
#endif
if (!idata->obcallback) {
idata->obcallback = make_obcallback();
/* we must have a callback object to succeed! */
if (!idata->obcallback)
{
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, req,
"python_cleanup_handler: make_obcallback returned no obCallBack!");
PyThreadState_Swap(NULL);
PyThreadState_Delete(tstate);
#ifdef WITH_THREAD
PyEval_ReleaseLock();
#endif
return;
}
}
/*
* make a note of which subinterpreter we're running under.
* this information is used by register_cleanup()
*/
if (interpreter)
ap_table_set(req->notes, "python_interpreter", interpreter);
else
ap_table_set(req->notes, "python_interpreter", MAIN_INTERPRETER);
/* create/acquire request object */
request_obj = get_request_object(req);
/* make a note of which handler we are in right now */
ap_table_set(req->notes, "python_handler", handler);
/* put the list of handlers on the hstack */
if ((s = ap_table_get(conf->directives, handler))) {
request_obj->hstack = ap_pstrdup(req->pool, ap_table_get(conf->directives,
handler));
}
if ((s = ap_table_get(req->notes, handler))) {
if (request_obj->hstack) {
request_obj->hstack = ap_pstrcat(req->pool, request_obj->hstack,
" ", s, NULL);
}
else {
request_obj->hstack = ap_pstrdup(req->pool, s);
}
}
/*
* Here is where we call into Python!
* This is the C equivalent of
* >>> obCallBack.Dispatch(request_object, handler)
*/
PyObject_CallMethod(idata->obcallback, "Dispatch", "Os",
request_obj, handler);
/* release the lock and destroy tstate*/
/* XXX Do not use
* . PyEval_ReleaseThread(tstate);
* . PyThreadState_Delete(tstate);
* because PyThreadState_delete should be done under
* interpreter lock to work around a bug in 1.5.2 (see patch to pystate.c 2.8->2.9)
*/
PyThreadState_Swap(NULL);
PyThreadState_Delete(tstate);
#ifdef WITH_THREAD
PyEval_ReleaseLock();
#endif
/* unlike python_handler, there is nothing to return */
return;
}
/**
** directive_PythonImport
**
* This function called whenever PythonImport directive
* is encountered. Note that this function does not actually
* import anything, it just remembers what needs to be imported
* in the python_imports table. The actual importing is done later
* in the ChildInitHandler. This is because this function here
* is called before the python_init and before the suid and fork.
*
* The reason why this infor stored in a global variable as opposed
* to the actual config, is that the config info doesn't seem to
* be available within the ChildInit handler.
*/
static const char *directive_PythonImport(cmd_parms *cmd, void *mconfig,
const char *module)
{
const char *s = NULL; /* general purpose string */
py_dir_config *conf;
const char *key = "PythonImport";
/* get config */
conf = (py_dir_config *) mconfig;
#ifdef WITH_THREAD
PyEval_AcquireLock();
#endif
/* make the table if not yet */
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