124 lines
3.1 KiB
C++
124 lines
3.1 KiB
C++
// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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// Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
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// DTLS code by Eric Rescorla <ekr@rtfm.com>
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// Copyright (C) 2006, Network Resonance, Inc.
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// Copyright (C) 2011, RTFM, Inc.
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// SPDX-License-Identifier: Apache-2.0
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#include <openssl/ssl.h>
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#include <string.h>
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#include <openssl/bytestring.h>
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#include <openssl/err.h>
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#include "internal.h"
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using namespace bssl;
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static const SRTP_PROTECTION_PROFILE kSRTPProfiles[] = {
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{
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"SRTP_AES128_CM_SHA1_80", SRTP_AES128_CM_SHA1_80,
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},
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{
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"SRTP_AES128_CM_SHA1_32", SRTP_AES128_CM_SHA1_32,
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},
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{
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"SRTP_AEAD_AES_128_GCM", SRTP_AEAD_AES_128_GCM,
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},
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{
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"SRTP_AEAD_AES_256_GCM", SRTP_AEAD_AES_256_GCM,
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},
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{0, 0},
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};
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static int find_profile_by_name(const char *profile_name,
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const SRTP_PROTECTION_PROFILE **pptr,
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size_t len) {
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const SRTP_PROTECTION_PROFILE *p = kSRTPProfiles;
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while (p->name) {
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if (len == strlen(p->name) && !strncmp(p->name, profile_name, len)) {
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*pptr = p;
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return 1;
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}
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p++;
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}
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return 0;
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}
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static int ssl_ctx_make_profiles(
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const char *profiles_string,
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UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> *out) {
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UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> profiles(
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sk_SRTP_PROTECTION_PROFILE_new_null());
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if (profiles == nullptr) {
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OPENSSL_PUT_ERROR(SSL, SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES);
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return 0;
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}
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const char *col;
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const char *ptr = profiles_string;
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do {
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col = strchr(ptr, ':');
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const SRTP_PROTECTION_PROFILE *profile;
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if (!find_profile_by_name(ptr, &profile,
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col ? (size_t)(col - ptr) : strlen(ptr))) {
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OPENSSL_PUT_ERROR(SSL, SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE);
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return 0;
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}
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if (!sk_SRTP_PROTECTION_PROFILE_push(profiles.get(), profile)) {
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return 0;
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}
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if (col) {
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ptr = col + 1;
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}
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} while (col);
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*out = std::move(profiles);
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return 1;
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}
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int SSL_CTX_set_srtp_profiles(SSL_CTX *ctx, const char *profiles) {
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return ssl_ctx_make_profiles(profiles, &ctx->srtp_profiles);
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}
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int SSL_set_srtp_profiles(SSL *ssl, const char *profiles) {
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return ssl->config != nullptr &&
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ssl_ctx_make_profiles(profiles, &ssl->config->srtp_profiles);
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}
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const STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(const SSL *ssl) {
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if (ssl == nullptr) {
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return nullptr;
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}
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if (ssl->config == nullptr) {
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assert(0);
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return nullptr;
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}
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return ssl->config->srtp_profiles != nullptr
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? ssl->config->srtp_profiles.get()
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: ssl->ctx->srtp_profiles.get();
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}
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const SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *ssl) {
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return ssl->s3->srtp_profile;
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}
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int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles) {
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// This API inverts its return value.
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return !SSL_CTX_set_srtp_profiles(ctx, profiles);
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}
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int SSL_set_tlsext_use_srtp(SSL *ssl, const char *profiles) {
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// This API inverts its return value.
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return !SSL_set_srtp_profiles(ssl, profiles);
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}
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