diff options
Diffstat (limited to 'crypto/openssl/ssl/d1_srtp.c')
| -rw-r--r-- | crypto/openssl/ssl/d1_srtp.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/crypto/openssl/ssl/d1_srtp.c b/crypto/openssl/ssl/d1_srtp.c new file mode 100644 index 000000000000..ad926a613dee --- /dev/null +++ b/crypto/openssl/ssl/d1_srtp.c @@ -0,0 +1,185 @@ +/* + * Copyright 2011-2025 The OpenSSL Project Authors. All Rights Reserved. + * + * 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 + */ + +/* + * DTLS code by Eric Rescorla <ekr@rtfm.com> + * + * Copyright (C) 2006, Network Resonance, Inc. Copyright (C) 2011, RTFM, Inc. + */ + +#include <stdio.h> +#include <openssl/objects.h> +#include "ssl_local.h" +#include "internal/ssl_unwrap.h" + +#ifndef OPENSSL_NO_SRTP + +static const SRTP_PROTECTION_PROFILE srtp_known_profiles[] = { + { + "SRTP_AES128_CM_SHA1_80", + SRTP_AES128_CM_SHA1_80, + }, + { + "SRTP_AES128_CM_SHA1_32", + SRTP_AES128_CM_SHA1_32, + }, + { + "SRTP_AEAD_AES_128_GCM", + SRTP_AEAD_AES_128_GCM, + }, + { + "SRTP_AEAD_AES_256_GCM", + SRTP_AEAD_AES_256_GCM, + }, + { + "SRTP_DOUBLE_AEAD_AES_128_GCM_AEAD_AES_128_GCM", + SRTP_DOUBLE_AEAD_AES_128_GCM_AEAD_AES_128_GCM, + }, + { + "SRTP_DOUBLE_AEAD_AES_256_GCM_AEAD_AES_256_GCM", + SRTP_DOUBLE_AEAD_AES_256_GCM_AEAD_AES_256_GCM, + }, + { + "SRTP_ARIA_128_CTR_HMAC_SHA1_80", + SRTP_ARIA_128_CTR_HMAC_SHA1_80, + }, + { + "SRTP_ARIA_128_CTR_HMAC_SHA1_32", + SRTP_ARIA_128_CTR_HMAC_SHA1_32, + }, + { + "SRTP_ARIA_256_CTR_HMAC_SHA1_80", + SRTP_ARIA_256_CTR_HMAC_SHA1_80, + }, + { + "SRTP_ARIA_256_CTR_HMAC_SHA1_32", + SRTP_ARIA_256_CTR_HMAC_SHA1_32, + }, + { + "SRTP_AEAD_ARIA_128_GCM", + SRTP_AEAD_ARIA_128_GCM, + }, + { + "SRTP_AEAD_ARIA_256_GCM", + SRTP_AEAD_ARIA_256_GCM, + }, + {0} +}; + +static int find_profile_by_name(char *profile_name, + const SRTP_PROTECTION_PROFILE **pptr, size_t len) +{ + const SRTP_PROTECTION_PROFILE *p; + + p = srtp_known_profiles; + while (p->name) { + if ((len == strlen(p->name)) + && strncmp(p->name, profile_name, len) == 0) { + *pptr = p; + return 0; + } + + p++; + } + + return 1; +} + +static int ssl_ctx_make_profiles(const char *profiles_string, + STACK_OF(SRTP_PROTECTION_PROFILE) **out) +{ + STACK_OF(SRTP_PROTECTION_PROFILE) *profiles; + + char *col; + char *ptr = (char *)profiles_string; + const SRTP_PROTECTION_PROFILE *p; + + if ((profiles = sk_SRTP_PROTECTION_PROFILE_new_null()) == NULL) { + ERR_raise(ERR_LIB_SSL, SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES); + return 1; + } + + do { + col = strchr(ptr, ':'); + + if (!find_profile_by_name(ptr, &p, col ? (size_t)(col - ptr) + : strlen(ptr))) { + if (sk_SRTP_PROTECTION_PROFILE_find(profiles, + (SRTP_PROTECTION_PROFILE *)p) >= 0) { + ERR_raise(ERR_LIB_SSL, SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); + goto err; + } + + if (!sk_SRTP_PROTECTION_PROFILE_push(profiles, + (SRTP_PROTECTION_PROFILE *)p)) { + ERR_raise(ERR_LIB_SSL, SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES); + goto err; + } + } else { + ERR_raise(ERR_LIB_SSL, SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE); + goto err; + } + + if (col) + ptr = col + 1; + } while (col); + + sk_SRTP_PROTECTION_PROFILE_free(*out); + + *out = profiles; + + return 0; + err: + sk_SRTP_PROTECTION_PROFILE_free(profiles); + return 1; +} + +int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles) +{ + if (IS_QUIC_METHOD(ctx->method)) + return 1; + + return ssl_ctx_make_profiles(profiles, &ctx->srtp_profiles); +} + +int SSL_set_tlsext_use_srtp(SSL *s, const char *profiles) +{ + SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s); + + if (sc == NULL) + return 1; + + return ssl_ctx_make_profiles(profiles, &sc->srtp_profiles); +} + +STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(SSL *s) +{ + SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s); + + if (sc != NULL) { + if (sc->srtp_profiles != NULL) { + return sc->srtp_profiles; + } else if ((s->ctx != NULL) && (s->ctx->srtp_profiles != NULL)) { + return s->ctx->srtp_profiles; + } + } + + return NULL; +} + +SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *s) +{ + SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s); + + if (sc == NULL) + return 0; + + return sc->srtp_profile; +} +#endif |