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pyutils.c
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405 lines (329 loc) · 9.99 KB
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#include "uwsgi_python.h"
extern struct uwsgi_server uwsgi;
extern struct uwsgi_python up;
int manage_python_response(struct wsgi_request *wsgi_req) {
// use standard WSGI response parse
return uwsgi_response_subhandler_wsgi(wsgi_req);
}
char *uwsgi_python_get_exception_type(PyObject *exc) {
char *class_name = NULL;
#if !defined(PYTHREE)
if (PyClass_Check(exc)) {
class_name = PyString_AsString( ((PyClassObject*)(exc))->cl_name );
}
else {
#endif
class_name = (char *) ((PyTypeObject*)exc)->tp_name;
#if !defined(PYTHREE)
}
#endif
if (class_name) {
char *dot = strrchr(class_name, '.');
if (dot) class_name = dot+1;
PyObject *module_name = PyObject_GetAttrString(exc, "__module__");
if (module_name) {
#ifdef PYTHREE
char *mod_name = NULL;
PyObject *zero = PyUnicode_AsUTF8String(module_name);
if (zero) {
mod_name = PyString_AsString(zero);
}
#else
char *mod_name = PyString_AsString(module_name);
#endif
if (mod_name && strcmp(mod_name, "exceptions") ) {
char *ret = uwsgi_concat3(mod_name, ".", class_name);
#ifdef PYTHREE
Py_DECREF(zero);
#endif
Py_DECREF(module_name);
return ret;
}
Py_DECREF(module_name);
return uwsgi_str(class_name);
}
}
return NULL;
}
struct uwsgi_buffer *uwsgi_python_backtrace(struct wsgi_request *wsgi_req) {
PyObject *type = NULL;
PyObject *value = NULL;
PyObject *traceback = NULL;
struct uwsgi_buffer *ub = NULL;
PyErr_Fetch(&type, &value, &traceback);
PyErr_NormalizeException(&type, &value, &traceback);
// traceback could not be available
if (!traceback) goto end;
PyObject *traceback_module = PyImport_ImportModule("traceback");
if (!traceback_module) {
goto end;
}
PyObject *traceback_dict = PyModule_GetDict(traceback_module);
PyObject *extract_tb = PyDict_GetItemString(traceback_dict, "extract_tb");
if (!extract_tb) goto end;
PyObject *args = PyTuple_New(1);
Py_INCREF(traceback);
PyTuple_SetItem(args, 0, traceback);
PyObject *result = PyEval_CallObject(extract_tb, args);
Py_DECREF(args);
if (!result) goto end;
ub = uwsgi_buffer_new(4096);
Py_ssize_t i;
// we have to build a uwsgi array with 5 items (4 are taken from the python tb)
for(i=0;i< PyList_Size(result);i++) {
PyObject *t = PyList_GetItem(result, i);
PyObject *tb_filename = PyTuple_GetItem(t, 0);
PyObject *tb_lineno = PyTuple_GetItem(t, 1);
PyObject *tb_function = PyTuple_GetItem(t, 2);
PyObject *tb_text = PyTuple_GetItem(t, 3);
int64_t line_no = PyInt_AsLong(tb_lineno);
#ifdef PYTHREE
PyObject *zero = NULL;
if (tb_filename) {
zero = PyUnicode_AsUTF8String(tb_filename);
if (!zero) goto end0;
// filename
if (uwsgi_buffer_u16le(ub, PyString_Size(zero))) { Py_DECREF(zero); goto end0; }
if (uwsgi_buffer_append(ub, PyString_AsString(zero), PyString_Size(zero))) { Py_DECREF(zero); goto end0; }
Py_DECREF(zero);
}
else {
if (uwsgi_buffer_u16le(ub, 0)) { goto end0; }
}
// lineno
if (uwsgi_buffer_append_valnum(ub, line_no)) goto end0;
if (tb_function) {
zero = PyUnicode_AsUTF8String(tb_function);
if (!zero) goto end0;
// function
if (uwsgi_buffer_u16le(ub, PyString_Size(zero))) { Py_DECREF(zero); goto end0; }
if (uwsgi_buffer_append(ub, PyString_AsString(zero), PyString_Size(zero))) { Py_DECREF(zero); goto end0; }
Py_DECREF(zero);
}
else {
if (uwsgi_buffer_u16le(ub, 0)) { goto end0; }
}
if (tb_text) {
zero = PyUnicode_AsUTF8String(tb_text);
if (!zero) goto end0;
// text
if (uwsgi_buffer_u16le(ub, PyString_Size(zero))) { Py_DECREF(zero); goto end0; }
if (uwsgi_buffer_append(ub, PyString_AsString(zero), PyString_Size(zero))) { Py_DECREF(zero); goto end0; }
Py_DECREF(zero);
}
else {
if (uwsgi_buffer_u16le(ub, 0)) { goto end0; }
}
#else
// filename
if (uwsgi_buffer_u16le(ub, PyString_Size(tb_filename))) goto end0;
if (uwsgi_buffer_append(ub, PyString_AsString(tb_filename), PyString_Size(tb_filename))) goto end0;
// lineno
if (uwsgi_buffer_append_valnum(ub, line_no)) goto end0;
// function
if (uwsgi_buffer_u16le(ub, PyString_Size(tb_function))) goto end0;
if (uwsgi_buffer_append(ub, PyString_AsString(tb_function), PyString_Size(tb_function))) goto end0;
// text
if (uwsgi_buffer_u16le(ub, PyString_Size(tb_text))) goto end0;
if (uwsgi_buffer_append(ub, PyString_AsString(tb_text), PyString_Size(tb_text))) goto end0;
#endif
// custom (unused)
if (uwsgi_buffer_u16le(ub, 0)) goto end0;
if (uwsgi_buffer_append(ub, "", 0)) goto end0;
}
Py_DECREF(result);
goto end;
end0:
Py_DECREF(result);
uwsgi_buffer_destroy(ub);
ub = NULL;
end:
PyErr_Restore(type, value, traceback);
return ub;
}
struct uwsgi_buffer *uwsgi_python_exception_class(struct wsgi_request *wsgi_req) {
PyObject *type = NULL;
PyObject *value = NULL;
PyObject *traceback = NULL;
struct uwsgi_buffer *ub = NULL;
PyErr_Fetch(&type, &value, &traceback);
PyErr_NormalizeException(&type, &value, &traceback);
char *class = uwsgi_python_get_exception_type(type);
if (class) {
size_t class_len = strlen(class);
ub = uwsgi_buffer_new(class_len);
if (uwsgi_buffer_append(ub, class, class_len)) {
uwsgi_buffer_destroy(ub);
ub = NULL;
goto end;
}
}
end:
free(class);
PyErr_Restore(type, value, traceback);
return ub;
}
struct uwsgi_buffer *uwsgi_python_exception_msg(struct wsgi_request *wsgi_req) {
PyObject *type = NULL;
PyObject *value = NULL;
PyObject *traceback = NULL;
struct uwsgi_buffer *ub = NULL;
PyErr_Fetch(&type, &value, &traceback);
PyErr_NormalizeException(&type, &value, &traceback);
// value could be NULL ?
if (!value) goto end;
#ifdef PYTHREE
char *msg = NULL;
PyObject *zero = PyUnicode_AsUTF8String( PyObject_Str(value) );
if (zero) {
msg = PyString_AsString( zero );
}
#else
char *msg = PyString_AsString( PyObject_Str(value) );
#endif
if (msg) {
size_t msg_len = strlen(msg);
ub = uwsgi_buffer_new(msg_len);
if (uwsgi_buffer_append(ub, msg, msg_len)) {
#ifdef PYTHREE
Py_DECREF(zero);
#endif
uwsgi_buffer_destroy(ub);
ub = NULL;
goto end;
}
#ifdef PYTHREE
Py_DECREF(zero);
#endif
}
end:
PyErr_Restore(type, value, traceback);
return ub;
}
struct uwsgi_buffer *uwsgi_python_exception_repr(struct wsgi_request *wsgi_req) {
struct uwsgi_buffer *ub_class = uwsgi_python_exception_class(wsgi_req);
if (!ub_class) return NULL;
struct uwsgi_buffer *ub_msg = uwsgi_python_exception_msg(wsgi_req);
if (!ub_msg) {
uwsgi_buffer_destroy(ub_class);
return NULL;
}
struct uwsgi_buffer *ub = uwsgi_buffer_new(ub_class->pos + 2 + ub_msg->pos);
if (uwsgi_buffer_append(ub, ub_class->buf, ub_class->pos)) goto error;
if (uwsgi_buffer_append(ub, ": ", 2)) goto error;
if (uwsgi_buffer_append(ub, ub_msg->buf, ub_msg->pos)) goto error;
uwsgi_buffer_destroy(ub_class);
uwsgi_buffer_destroy(ub_msg);
return ub;
error:
uwsgi_buffer_destroy(ub_class);
uwsgi_buffer_destroy(ub_msg);
uwsgi_buffer_destroy(ub);
return NULL;
}
void uwsgi_python_exception_log(struct wsgi_request *wsgi_req) {
PyErr_Print();
}
PyObject *python_call(PyObject *callable, PyObject *args, int catch, struct wsgi_request *wsgi_req) {
//uwsgi_log("ready to call %p %p\n", callable, args);
PyObject *pyret = PyEval_CallObject(callable, args);
//uwsgi_log("called\n");
if (PyErr_Occurred()) {
if (wsgi_req) {
uwsgi_manage_exception(wsgi_req, catch);
}
else {
PyErr_Print();
}
}
#ifdef UWSGI_DEBUG
if (pyret) {
uwsgi_debug("called %p %p %d\n", callable, args, pyret->ob_refcnt);
}
#endif
return pyret;
}
int uwsgi_python_call(struct wsgi_request *wsgi_req, PyObject *callable, PyObject *args) {
wsgi_req->async_result = python_call(callable, args, 0, wsgi_req);
if (wsgi_req->async_result) {
while ( manage_python_response(wsgi_req) != UWSGI_OK) {
if (uwsgi.async > 0) {
return UWSGI_AGAIN;
}
}
}
return UWSGI_OK;
}
void init_pyargv() {
char *ap;
char *argv0 = "uwsgi";
if (up.pyrun) {
argv0 = up.pyrun;
}
#ifdef PYTHREE
wchar_t *pname = uwsgi_calloc(sizeof(wchar_t) * (strlen(argv0)+1));
mbstowcs(pname, argv0, strlen(argv0)+1);
#else
char *pname = argv0;
#endif
up.argc = 1;
if (up.argv) {
char *tmp_ptr = uwsgi_str(up.argv);
#ifdef __sun__
// FIX THIS !!!
char *ctx = NULL;
ap = strtok_r(tmp_ptr, " ", &ctx);
while ((ap = strtok_r(NULL, " ", &ctx)) != NULL) {
#else
while ((ap = strsep(&tmp_ptr, " \t")) != NULL) {
#endif
if (*ap != '\0') {
up.argc++;
}
}
free(tmp_ptr);
}
#ifdef PYTHREE
up.py_argv = uwsgi_calloc(sizeof(wchar_t *) * up.argc+1);
#else
up.py_argv = uwsgi_calloc(sizeof(char *) * up.argc+1);
#endif
up.py_argv[0] = pname;
if (up.argv) {
char *py_argv_copy = uwsgi_str(up.argv);
up.argc = 1;
#ifdef PYTHREE
wchar_t *wcargv = uwsgi_calloc( sizeof( wchar_t ) * (strlen(py_argv_copy)+1));
#endif
#ifdef __sun__
// FIX THIS !!!
char *ctx = NULL;
ap = strtok_r(py_argv_copy, " ", &ctx);
while ((ap = strtok_r(NULL, " ", &ctx)) != NULL) {
#else
while ((ap = strsep(&py_argv_copy, " \t")) != NULL) {
#endif
if (*ap != '\0') {
#ifdef PYTHREE
mbstowcs( wcargv, ap, strlen(ap));
up.py_argv[up.argc] = wcargv;
wcargv += strlen(ap) + 1;
#else
up.py_argv[up.argc] = ap;
#endif
up.argc++;
}
}
}
PySys_SetArgv(up.argc, up.py_argv);
PyObject *sys_dict = get_uwsgi_pydict("sys");
if (!sys_dict) {
uwsgi_log("unable to load python sys module !!!\n");
exit(1);
}
#ifdef PYTHREE
PyDict_SetItemString(sys_dict, "executable", PyUnicode_FromString(uwsgi.binary_path));
#else
PyDict_SetItemString(sys_dict, "executable", PyString_FromString(uwsgi.binary_path));
#endif
}