/*
* Copyright 2001-2022 The OpenSSL Project Authors. All Rights Reserved.
* Copyright Siemens AG 2018-2020
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "e_os.h"
#include <stdio.h>
#include <stdlib.h>
#include "crypto/ctype.h"
#include <string.h>
#include <openssl/asn1.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/httperr.h>
#include <openssl/cmperr.h>
#include <openssl/buffer.h>
#include <openssl/http.h>
#include "internal/sockets.h"
#include "internal/cryptlib.h" /* for ossl_assert() */
#define HAS_PREFIX(str, prefix) (strncmp(str, prefix, sizeof(prefix) - 1) == 0)
#define HTTP_PREFIX "HTTP/"
#define HTTP_VERSION_PATT "1." /* allow 1.x */
#define HTTP_VERSION_STR_LEN sizeof(HTTP_VERSION_PATT) /* == strlen("1.0") */
#define HTTP_PREFIX_VERSION HTTP_PREFIX""HTTP_VERSION_PATT
#define HTTP_1_0 HTTP_PREFIX_VERSION"0" /* "HTTP/1.0" */
#define HTTP_LINE1_MINLEN (sizeof(HTTP_PREFIX_VERSION "x 200\n") - 1)
#define HTTP_VERSION_MAX_REDIRECTIONS 50
#define HTTP_STATUS_CODE_OK 200
#define HTTP_STATUS_CODE_MOVED_PERMANENTLY 301
#define HTTP_STATUS_CODE_FOUND 302
/* Stateful HTTP request code, supporting blocking and non-blocking I/O */
/* Opaque HTTP request status structure */
struct ossl_http_req_ctx_st {
int state; /* Current I/O state */
unsigned char *buf; /* Buffer to write request or read response */
int buf_size; /* Buffer size */
int free_wbio; /* wbio allocated internally, free with ctx */
BIO *wbio; /* BIO to write/send request to */
BIO *rbio; /* BIO to read/receive response from */
OSSL_HTTP_bio_cb_t upd_fn; /* Optional BIO update callback used for TLS */
