chromium/third_party/boringssl/src/crypto/pkcs7/pkcs7.c

/* Copyright (c) 2014, Google Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, 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. */

#include <openssl/pkcs7.h>

#include <openssl/bytestring.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/pool.h>
#include <openssl/stack.h>

#include "internal.h"
#include "../bytestring/internal.h"


// 1.2.840.113549.1.7.1
static const uint8_t kPKCS7Data[] = …;

// 1.2.840.113549.1.7.2
static const uint8_t kPKCS7SignedData[] = …;

// pkcs7_parse_header reads the non-certificate/non-CRL prefix of a PKCS#7
// SignedData blob from |cbs| and sets |*out| to point to the rest of the
// input. If the input is in BER format, then |*der_bytes| will be set to a
// pointer that needs to be freed by the caller once they have finished
// processing |*out| (which will be pointing into |*der_bytes|).
//
// It returns one on success or zero on error. On error, |*der_bytes| is
// NULL.
int pkcs7_parse_header(uint8_t **der_bytes, CBS *out, CBS *cbs) { … }

int PKCS7_get_raw_certificates(STACK_OF(CRYPTO_BUFFER) *out_certs, CBS *cbs,
                               CRYPTO_BUFFER_POOL *pool) { … }

static int pkcs7_bundle_raw_certificates_cb(CBB *out, const void *arg) { … }

int PKCS7_bundle_raw_certificates(CBB *out,
                                  const STACK_OF(CRYPTO_BUFFER) *certs) { … }

int pkcs7_add_signed_data(CBB *out,
                          int (*digest_algos_cb)(CBB *out, const void *arg),
                          int (*cert_crl_cb)(CBB *out, const void *arg),
                          int (*signer_infos_cb)(CBB *out, const void *arg),
                          const void *arg) { … }