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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include "http.h"
#include <aws/http/request_response.h>
static const char *s_capsule_name_headers = "aws_http_headers";
/* HttpHeaders._binding capsule contains raw aws_http_headers struct.
* There is no intermediate binding struct */
static struct aws_http_headers *s_headers_from_capsule(PyObject *py_capsule) {
return PyCapsule_GetPointer(py_capsule, s_capsule_name_headers);
}
/* Runs when GC destroys the capsule */
static void s_headers_capsule_destructor(PyObject *py_capsule) {
struct aws_http_headers *headers = s_headers_from_capsule(py_capsule);
aws_http_headers_release(headers);
}
struct aws_http_headers *aws_py_get_http_headers(PyObject *http_headers) {
return aws_py_get_binding(http_headers, s_capsule_name_headers, "HttpHeaders");
}
PyObject *aws_py_http_headers_new_from_native(struct aws_http_headers *headers) {
PyObject *py_capsule = PyCapsule_New(headers, s_capsule_name_headers, s_headers_capsule_destructor);
if (!py_capsule) {
return NULL;
}
/* Acquire hold so aws_http_headers object lives at least as long as the binding */
aws_http_headers_acquire(headers);
return py_capsule;
}
PyObject *aws_py_http_headers_new(PyObject *self, PyObject *args) {
(void)self;
(void)args;
struct aws_http_headers *headers = aws_http_headers_new(aws_py_get_allocator());
if (!headers) {
return PyErr_AwsLastError();
}
PyObject *py_capsule = PyCapsule_New(headers, s_capsule_name_headers, s_headers_capsule_destructor);
if (!py_capsule) {
aws_http_headers_release(headers);
return NULL;
}
return py_capsule;
}
/**
* Common start to methods whose first argument is the capsule.
* FMT: string for PyArg_ParseTuple(). DO NOT pass the "O" for the capsule.
* ...: varargs for PyArg_ParseTuple(). DO NOT pass &capsule.
*
* on error, returns NULL from function with python exception set
* on success, creates and sets local variable: aws_http_headers *headers = ...;
*/
#define S_HEADERS_METHOD_START(FMT, ...) \
(void)self; \
PyObject *py_capsule; \
if (!PyArg_ParseTuple(args, "O" FMT, &py_capsule, __VA_ARGS__)) { \
return NULL; \
} \
struct aws_http_headers *headers = s_headers_from_capsule(py_capsule); \
if (!headers) { \
return NULL; \
}
PyObject *aws_py_http_headers_add(PyObject *self, PyObject *args) {
struct aws_byte_cursor name;
struct aws_byte_cursor value;
S_HEADERS_METHOD_START("s#s#", &name.ptr, &name.len, &value.ptr, &value.len);
if (aws_http_headers_add(headers, name, value)) {
return PyErr_AwsLastError();
}
Py_RETURN_NONE;
}
static bool s_py_http_headers_add_pair(PyObject *py_pair, struct aws_http_headers *headers) {
const char *type_errmsg = "List of (name,value) pairs expected.";
if (!PyTuple_Check(py_pair) || PyTuple_Size(py_pair) != 2) {
PyErr_SetString(PyExc_TypeError, type_errmsg);
return false;
}
struct aws_byte_cursor name = aws_byte_cursor_from_pyunicode(PyTuple_GetItem(py_pair, 0) /* Borrowed reference */);
struct aws_byte_cursor value = aws_byte_cursor_from_pyunicode(PyTuple_GetItem(py_pair, 1) /* Borrowed reference */);
if (!name.ptr || !value.ptr) {
PyErr_SetString(PyExc_TypeError, type_errmsg);
return false;
}
if (aws_http_headers_add(headers, name, value)) {
PyErr_SetAwsLastError();
return false;
}
return true;
}
PyObject *aws_py_http_headers_add_pairs(PyObject *self, PyObject *args) {
PyObject *py_pairs;
S_HEADERS_METHOD_START("O", &py_pairs);
bool success = false;
const char *type_errmsg = "List of (name,value) pairs expected.";
PyObject *py_sequence = PySequence_Fast(py_pairs, type_errmsg); /* new reference */
if (!py_sequence) {
return NULL;
}
const Py_ssize_t count = PySequence_Size(py_pairs);
for (Py_ssize_t i = 0; i < count; ++i) {
PyObject *py_pair = PySequence_GetItem(py_sequence, i); /* New Reference */
bool success = s_py_http_headers_add_pair(py_pair, headers);
Py_DECREF(py_pair);
if (!success) {
goto done;
}
}
success = true;
done:
Py_DECREF(py_sequence);
if (success) {
Py_RETURN_NONE;
}
return NULL;
}
PyObject *aws_py_http_headers_set(PyObject *self, PyObject *args) {
struct aws_byte_cursor name;
struct aws_byte_cursor value;
S_HEADERS_METHOD_START("s#s#", &name.ptr, &name.len, &value.ptr, &value.len);
if (aws_http_headers_set(headers, name, value)) {
return PyErr_AwsLastError();
}
Py_RETURN_NONE;
}
PyObject *aws_py_http_headers_get(PyObject *self, PyObject *args) {
struct aws_byte_cursor name;
PyObject *py_default;
S_HEADERS_METHOD_START("s#O", &name.ptr, &name.len, &py_default);
struct aws_byte_cursor value;
if (aws_http_headers_get(headers, name, &value)) {
/* C API raises error if name not found, but Python API returns a default value */
Py_INCREF(py_default);
return py_default;
}
return PyUnicode_FromAwsByteCursor(&value);
}
static PyObject *s_py_tuple_from_header(struct aws_http_header header) {
PyObject *py_name = NULL;
PyObject *py_value = NULL;
PyObject *py_pair = NULL;
py_name = PyUnicode_FromAwsByteCursor(&header.name);
if (!py_name) {
goto error;
}
py_value = PyUnicode_FromAwsByteCursor(&header.value);
if (!py_value) {
goto error;
}
py_pair = PyTuple_New(2);
if (!py_pair) {
goto error;
}
PyTuple_SetItem(py_pair, 0, py_name); /* Steals a reference */
PyTuple_SetItem(py_pair, 1, py_value); /* Steals a reference */
return py_pair;
error:
Py_XDECREF(py_name);
Py_XDECREF(py_value);
Py_XDECREF(py_pair);
return NULL;
}
PyObject *aws_py_http_headers_get_index(PyObject *self, PyObject *args) {
Py_ssize_t index;
S_HEADERS_METHOD_START("n", &index);
struct aws_http_header header;
if (aws_http_headers_get_index(headers, index, &header)) {
return PyErr_AwsLastError();
}
return s_py_tuple_from_header(header);
}
PyObject *aws_py_http_headers_count(PyObject *self, PyObject *args) {
(void)self;
PyObject *py_capsule;
if (!PyArg_ParseTuple(args, "O", &py_capsule)) {
return NULL;
}
struct aws_http_headers *headers = s_headers_from_capsule(py_capsule);
if (!headers) {
return NULL;
}
return PyLong_FromSize_t(aws_http_headers_count(headers));
}
PyObject *aws_py_http_headers_remove(PyObject *self, PyObject *args) {
struct aws_byte_cursor name;
S_HEADERS_METHOD_START("s#", &name.ptr, &name.len);
if (aws_http_headers_erase(headers, name)) {
PyErr_SetString(PyExc_KeyError, "HttpHeaders.remove(name): name not found");
return NULL;
}
Py_RETURN_NONE;
}
PyObject *aws_py_http_headers_remove_value(PyObject *self, PyObject *args) {
struct aws_byte_cursor name;
struct aws_byte_cursor value;
S_HEADERS_METHOD_START("s#s#", &name.ptr, &name.len, &value.ptr, &value.len);
if (aws_http_headers_erase_value(headers, name, value)) {
PyErr_SetString(PyExc_ValueError, "HttpHeaders.remove_value(name,value): value not found");
return NULL;
}
Py_RETURN_NONE;
}
PyObject *aws_py_http_headers_clear(PyObject *self, PyObject *args) {
(void)self;
PyObject *py_capsule;
if (!PyArg_ParseTuple(args, "O", &py_capsule)) {
return NULL;
}
struct aws_http_headers *headers = s_headers_from_capsule(py_capsule);
if (!headers) {
return NULL;
}
aws_http_headers_clear(headers);
Py_RETURN_NONE;
}
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