diff options
Diffstat (limited to 'crypto/openssl/ssl/ssl_asn1.c')
| -rw-r--r-- | crypto/openssl/ssl/ssl_asn1.c | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/crypto/openssl/ssl/ssl_asn1.c b/crypto/openssl/ssl/ssl_asn1.c new file mode 100644 index 000000000000..9964a8c1eeb3 --- /dev/null +++ b/crypto/openssl/ssl/ssl_asn1.c @@ -0,0 +1,433 @@ +/* + * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved. + * Copyright 2005 Nokia. 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 + */ + +#include <stdio.h> +#include <stdlib.h> +#include "ssl_local.h" +#include <openssl/asn1t.h> +#include <openssl/encoder.h> +#include <openssl/x509.h> + +typedef struct { + uint32_t version; + int32_t ssl_version; + ASN1_OCTET_STRING *cipher; + ASN1_OCTET_STRING *comp_id; + ASN1_OCTET_STRING *master_key; + ASN1_OCTET_STRING *session_id; + ASN1_OCTET_STRING *key_arg; + int64_t time; + int64_t timeout; + X509 *peer; + ASN1_OCTET_STRING *session_id_context; + int32_t verify_result; + ASN1_OCTET_STRING *tlsext_hostname; + uint64_t tlsext_tick_lifetime_hint; + uint32_t tlsext_tick_age_add; + ASN1_OCTET_STRING *tlsext_tick; +#ifndef OPENSSL_NO_PSK + ASN1_OCTET_STRING *psk_identity_hint; + ASN1_OCTET_STRING *psk_identity; +#endif +#ifndef OPENSSL_NO_SRP + ASN1_OCTET_STRING *srp_username; +#endif + uint64_t flags; + uint32_t max_early_data; + ASN1_OCTET_STRING *alpn_selected; + uint32_t tlsext_max_fragment_len_mode; + ASN1_OCTET_STRING *ticket_appdata; + uint32_t kex_group; + ASN1_OCTET_STRING *peer_rpk; +} SSL_SESSION_ASN1; + +ASN1_SEQUENCE(SSL_SESSION_ASN1) = { + ASN1_EMBED(SSL_SESSION_ASN1, version, UINT32), + ASN1_EMBED(SSL_SESSION_ASN1, ssl_version, INT32), + ASN1_SIMPLE(SSL_SESSION_ASN1, cipher, ASN1_OCTET_STRING), + ASN1_SIMPLE(SSL_SESSION_ASN1, session_id, ASN1_OCTET_STRING), + ASN1_SIMPLE(SSL_SESSION_ASN1, master_key, ASN1_OCTET_STRING), + ASN1_IMP_OPT(SSL_SESSION_ASN1, key_arg, ASN1_OCTET_STRING, 0), + ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, time, ZINT64, 1), + ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, timeout, ZINT64, 2), + ASN1_EXP_OPT(SSL_SESSION_ASN1, peer, X509, 3), + ASN1_EXP_OPT(SSL_SESSION_ASN1, session_id_context, ASN1_OCTET_STRING, 4), + ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, verify_result, ZINT32, 5), + ASN1_EXP_OPT(SSL_SESSION_ASN1, tlsext_hostname, ASN1_OCTET_STRING, 6), +#ifndef OPENSSL_NO_PSK + ASN1_EXP_OPT(SSL_SESSION_ASN1, psk_identity_hint, ASN1_OCTET_STRING, 7), + ASN1_EXP_OPT(SSL_SESSION_ASN1, psk_identity, ASN1_OCTET_STRING, 8), +#endif + ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, tlsext_tick_lifetime_hint, ZUINT64, 9), + ASN1_EXP_OPT(SSL_SESSION_ASN1, tlsext_tick, ASN1_OCTET_STRING, 10), + ASN1_EXP_OPT(SSL_SESSION_ASN1, comp_id, ASN1_OCTET_STRING, 11), +#ifndef OPENSSL_NO_SRP + ASN1_EXP_OPT(SSL_SESSION_ASN1, srp_username, ASN1_OCTET_STRING, 12), +#endif + ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, flags, ZUINT64, 13), + ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, tlsext_tick_age_add, ZUINT32, 14), + ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, max_early_data, ZUINT32, 15), + ASN1_EXP_OPT(SSL_SESSION_ASN1, alpn_selected, ASN1_OCTET_STRING, 16), + ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, tlsext_max_fragment_len_mode, ZUINT32, 17), + ASN1_EXP_OPT(SSL_SESSION_ASN1, ticket_appdata, ASN1_OCTET_STRING, 18), + ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, kex_group, UINT32, 19), + ASN1_EXP_OPT(SSL_SESSION_ASN1, peer_rpk, ASN1_OCTET_STRING, 20) +} static_ASN1_SEQUENCE_END(SSL_SESSION_ASN1) + +IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(SSL_SESSION_ASN1) + +/* Utility functions for i2d_SSL_SESSION */ + +/* Initialise OCTET STRING from buffer and length */ + +static void ssl_session_oinit(ASN1_OCTET_STRING **dest, ASN1_OCTET_STRING *os, + const unsigned char *data, size_t len) +{ + os->data = (unsigned char *)data; /* justified cast: data is not modified */ + os->length = (int)len; + os->flags = 0; + *dest = os; +} + +/* Initialise OCTET STRING from string */ +static void ssl_session_sinit(ASN1_OCTET_STRING **dest, ASN1_OCTET_STRING *os, + const char *data) +{ + if (data != NULL) + ssl_session_oinit(dest, os, (const unsigned char *)data, strlen(data)); + else + *dest = NULL; +} + +int i2d_SSL_SESSION(const SSL_SESSION *in, unsigned char **pp) +{ + + SSL_SESSION_ASN1 as; + + ASN1_OCTET_STRING cipher; + unsigned char cipher_data[2]; + ASN1_OCTET_STRING master_key, session_id, sid_ctx; + +#ifndef OPENSSL_NO_COMP + ASN1_OCTET_STRING comp_id; + unsigned char comp_id_data; +#endif + ASN1_OCTET_STRING tlsext_hostname, tlsext_tick; +#ifndef OPENSSL_NO_SRP + ASN1_OCTET_STRING srp_username; +#endif +#ifndef OPENSSL_NO_PSK + ASN1_OCTET_STRING psk_identity, psk_identity_hint; +#endif + ASN1_OCTET_STRING alpn_selected; + ASN1_OCTET_STRING ticket_appdata; + ASN1_OCTET_STRING peer_rpk; + + long l; + int ret; + + if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0))) + return 0; + + memset(&as, 0, sizeof(as)); + + as.version = SSL_SESSION_ASN1_VERSION; + as.ssl_version = in->ssl_version; + + as.kex_group = in->kex_group; + + if (in->cipher == NULL) + l = in->cipher_id; + else + l = in->cipher->id; + cipher_data[0] = ((unsigned char)(l >> 8L)) & 0xff; + cipher_data[1] = ((unsigned char)(l)) & 0xff; + + ssl_session_oinit(&as.cipher, &cipher, cipher_data, 2); + +#ifndef OPENSSL_NO_COMP + if (in->compress_meth) { + comp_id_data = (unsigned char)in->compress_meth; + ssl_session_oinit(&as.comp_id, &comp_id, &comp_id_data, 1); + } +#endif + + ssl_session_oinit(&as.master_key, &master_key, + in->master_key, in->master_key_length); + + ssl_session_oinit(&as.session_id, &session_id, + in->session_id, in->session_id_length); + + ssl_session_oinit(&as.session_id_context, &sid_ctx, + in->sid_ctx, in->sid_ctx_length); + + as.time = (int64_t)ossl_time_to_time_t(in->time); + as.timeout = (int64_t)ossl_time2seconds(in->timeout); + as.verify_result = in->verify_result; + + as.peer = in->peer; + + as.peer_rpk = NULL; + peer_rpk.data = NULL; + if (in->peer_rpk != NULL) { + peer_rpk.length = i2d_PUBKEY(in->peer_rpk, &peer_rpk.data); + if (peer_rpk.length > 0 && peer_rpk.data != NULL) + as.peer_rpk = &peer_rpk; + } + + ssl_session_sinit(&as.tlsext_hostname, &tlsext_hostname, + in->ext.hostname); + if (in->ext.tick) { + ssl_session_oinit(&as.tlsext_tick, &tlsext_tick, + in->ext.tick, in->ext.ticklen); + } + if (in->ext.tick_lifetime_hint > 0) + as.tlsext_tick_lifetime_hint = in->ext.tick_lifetime_hint; + as.tlsext_tick_age_add = in->ext.tick_age_add; +#ifndef OPENSSL_NO_PSK + ssl_session_sinit(&as.psk_identity_hint, &psk_identity_hint, + in->psk_identity_hint); + ssl_session_sinit(&as.psk_identity, &psk_identity, in->psk_identity); +#endif /* OPENSSL_NO_PSK */ +#ifndef OPENSSL_NO_SRP + ssl_session_sinit(&as.srp_username, &srp_username, in->srp_username); +#endif /* OPENSSL_NO_SRP */ + + as.flags = in->flags; + as.max_early_data = in->ext.max_early_data; + + if (in->ext.alpn_selected == NULL) + as.alpn_selected = NULL; + else + ssl_session_oinit(&as.alpn_selected, &alpn_selected, + in->ext.alpn_selected, in->ext.alpn_selected_len); + + as.tlsext_max_fragment_len_mode = in->ext.max_fragment_len_mode; + + if (in->ticket_appdata == NULL) + as.ticket_appdata = NULL; + else + ssl_session_oinit(&as.ticket_appdata, &ticket_appdata, + in->ticket_appdata, in->ticket_appdata_len); + + ret = i2d_SSL_SESSION_ASN1(&as, pp); + OPENSSL_free(peer_rpk.data); + return ret; +} + +/* Utility functions for d2i_SSL_SESSION */ + +/* OPENSSL_strndup an OCTET STRING */ + +static int ssl_session_strndup(char **pdst, ASN1_OCTET_STRING *src) +{ + OPENSSL_free(*pdst); + *pdst = NULL; + if (src == NULL) + return 1; + *pdst = OPENSSL_strndup((char *)src->data, src->length); + if (*pdst == NULL) + return 0; + return 1; +} + +/* Copy an OCTET STRING, return error if it exceeds maximum length */ + +static int ssl_session_memcpy(unsigned char *dst, size_t *pdstlen, + ASN1_OCTET_STRING *src, size_t maxlen) +{ + if (src == NULL || src->length == 0) { + *pdstlen = 0; + return 1; + } + if (src->length < 0 || src->length > (int)maxlen) + return 0; + memcpy(dst, src->data, src->length); + *pdstlen = src->length; + return 1; +} + +SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp, + long length) +{ + return d2i_SSL_SESSION_ex(a, pp, length, NULL, NULL); +} +SSL_SESSION *d2i_SSL_SESSION_ex(SSL_SESSION **a, const unsigned char **pp, + long length, OSSL_LIB_CTX *libctx, + const char *propq) +{ + long id; + size_t tmpl; + const unsigned char *p = *pp; + SSL_SESSION_ASN1 *as = NULL; + SSL_SESSION *ret = NULL; + + as = d2i_SSL_SESSION_ASN1(NULL, &p, length); + /* ASN.1 code returns suitable error */ + if (as == NULL) + goto err; + + if (a == NULL || *a == NULL) { + ret = SSL_SESSION_new(); + if (ret == NULL) + goto err; + } else { + ret = *a; + } + + if (as->version != SSL_SESSION_ASN1_VERSION) { + ERR_raise(ERR_LIB_SSL, SSL_R_UNKNOWN_SSL_VERSION); + goto err; + } + + if ((as->ssl_version >> 8) != SSL3_VERSION_MAJOR + && (as->ssl_version >> 8) != DTLS1_VERSION_MAJOR + && as->ssl_version != DTLS1_BAD_VER) { + ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_SSL_VERSION); + goto err; + } + + ret->ssl_version = (int)as->ssl_version; + + ret->kex_group = as->kex_group; + + if (as->cipher->length != 2) { + ERR_raise(ERR_LIB_SSL, SSL_R_CIPHER_CODE_WRONG_LENGTH); + goto err; + } + + id = 0x03000000L | ((unsigned long)as->cipher->data[0] << 8L) + | (unsigned long)as->cipher->data[1]; + + ret->cipher_id = id; + ret->cipher = ssl3_get_cipher_by_id(id); + if (ret->cipher == NULL) + goto err; + + if (!ssl_session_memcpy(ret->session_id, &ret->session_id_length, + as->session_id, SSL3_MAX_SSL_SESSION_ID_LENGTH)) + goto err; + + if (!ssl_session_memcpy(ret->master_key, &tmpl, + as->master_key, TLS13_MAX_RESUMPTION_PSK_LENGTH)) + goto err; + + ret->master_key_length = tmpl; + + if (as->time != 0) + ret->time = ossl_time_from_time_t(as->time); + else + ret->time = ossl_time_now(); + + if (as->timeout != 0) + ret->timeout = ossl_seconds2time(as->timeout); + else + ret->timeout = ossl_seconds2time(3); + ssl_session_calculate_timeout(ret); + + X509_free(ret->peer); + ret->peer = as->peer; + as->peer = NULL; + + EVP_PKEY_free(ret->peer_rpk); + ret->peer_rpk = NULL; + if (as->peer_rpk != NULL) { + const unsigned char *data = as->peer_rpk->data; + + /* + * |data| is incremented; we don't want to lose original ptr + */ + ret->peer_rpk = d2i_PUBKEY_ex(NULL, &data, as->peer_rpk->length, libctx, propq); + if (ret->peer_rpk == NULL) + goto err; + } + + if (!ssl_session_memcpy(ret->sid_ctx, &ret->sid_ctx_length, + as->session_id_context, SSL_MAX_SID_CTX_LENGTH)) + goto err; + + /* NB: this defaults to zero which is X509_V_OK */ + ret->verify_result = as->verify_result; + + if (!ssl_session_strndup(&ret->ext.hostname, as->tlsext_hostname)) + goto err; + +#ifndef OPENSSL_NO_PSK + if (!ssl_session_strndup(&ret->psk_identity_hint, as->psk_identity_hint)) + goto err; + if (!ssl_session_strndup(&ret->psk_identity, as->psk_identity)) + goto err; +#endif + + ret->ext.tick_lifetime_hint = (unsigned long)as->tlsext_tick_lifetime_hint; + ret->ext.tick_age_add = as->tlsext_tick_age_add; + OPENSSL_free(ret->ext.tick); + if (as->tlsext_tick != NULL) { + ret->ext.tick = as->tlsext_tick->data; + ret->ext.ticklen = as->tlsext_tick->length; + as->tlsext_tick->data = NULL; + } else { + ret->ext.tick = NULL; + } +#ifndef OPENSSL_NO_COMP + if (as->comp_id) { + if (as->comp_id->length != 1) { + ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH); + goto err; + } + ret->compress_meth = as->comp_id->data[0]; + } else { + ret->compress_meth = 0; + } +#endif + +#ifndef OPENSSL_NO_SRP + if (!ssl_session_strndup(&ret->srp_username, as->srp_username)) + goto err; +#endif /* OPENSSL_NO_SRP */ + /* Flags defaults to zero which is fine */ + ret->flags = (int32_t)as->flags; + ret->ext.max_early_data = as->max_early_data; + + OPENSSL_free(ret->ext.alpn_selected); + if (as->alpn_selected != NULL) { + ret->ext.alpn_selected = as->alpn_selected->data; + ret->ext.alpn_selected_len = as->alpn_selected->length; + as->alpn_selected->data = NULL; + } else { + ret->ext.alpn_selected = NULL; + ret->ext.alpn_selected_len = 0; + } + + ret->ext.max_fragment_len_mode = as->tlsext_max_fragment_len_mode; + + OPENSSL_free(ret->ticket_appdata); + if (as->ticket_appdata != NULL) { + ret->ticket_appdata = as->ticket_appdata->data; + ret->ticket_appdata_len = as->ticket_appdata->length; + as->ticket_appdata->data = NULL; + } else { + ret->ticket_appdata = NULL; + ret->ticket_appdata_len = 0; + } + + M_ASN1_free_of(as, SSL_SESSION_ASN1); + + if ((a != NULL) && (*a == NULL)) + *a = ret; + *pp = p; + return ret; + + err: + M_ASN1_free_of(as, SSL_SESSION_ASN1); + if ((a == NULL) || (*a != ret)) + SSL_SESSION_free(ret); + return NULL; +} |