diff options
Diffstat (limited to 'tls_keypair.c')
| -rw-r--r-- | tls_keypair.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/tls_keypair.c b/tls_keypair.c new file mode 100644 index 0000000..a98e5c2 --- /dev/null +++ b/tls_keypair.c @@ -0,0 +1,169 @@ +/* $OpenBSD: tls_keypair.c,v 1.6 2018/04/07 16:35:34 jsing Exp $ */ +/* + * Copyright (c) 2014 Joel Sing <jsing@openbsd.org> + * + * Permission to use, copy, modify, and 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/bio.h> +#include <openssl/err.h> +#include <openssl/pem.h> + +#include <tls.h> + +#include "tls_internal.h" + +struct tls_keypair * +tls_keypair_new(void) +{ + return calloc(1, sizeof(struct tls_keypair)); +} + +static int +tls_keypair_pubkey_hash(struct tls_keypair *keypair, struct tls_error *error) +{ + X509 *cert = NULL; + int rv = -1; + + free(keypair->pubkey_hash); + keypair->pubkey_hash = NULL; + + if (keypair->cert_mem == NULL) { + rv = 0; + goto done; + } + + if (tls_keypair_load_cert(keypair, error, &cert) == -1) + goto err; + if (tls_cert_pubkey_hash(cert, &keypair->pubkey_hash) == -1) + goto err; + + rv = 0; + + err: + X509_free(cert); + done: + return (rv); +} + +void +tls_keypair_clear_key(struct tls_keypair *keypair) +{ + freezero(keypair->key_mem, keypair->key_len); + keypair->key_mem = NULL; + keypair->key_len = 0; +} + +int +tls_keypair_set_cert_file(struct tls_keypair *keypair, struct tls_error *error, + const char *cert_file) +{ + if (tls_config_load_file(error, "certificate", cert_file, + &keypair->cert_mem, &keypair->cert_len) == -1) + return -1; + return tls_keypair_pubkey_hash(keypair, error); +} + +int +tls_keypair_set_cert_mem(struct tls_keypair *keypair, struct tls_error *error, + const uint8_t *cert, size_t len) +{ + if (tls_set_mem(&keypair->cert_mem, &keypair->cert_len, cert, len) == -1) + return -1; + return tls_keypair_pubkey_hash(keypair, error); +} + +int +tls_keypair_set_key_file(struct tls_keypair *keypair, struct tls_error *error, + const char *key_file) +{ + tls_keypair_clear_key(keypair); + return tls_config_load_file(error, "key", key_file, + &keypair->key_mem, &keypair->key_len); +} + +int +tls_keypair_set_key_mem(struct tls_keypair *keypair, struct tls_error *error, + const uint8_t *key, size_t len) +{ + tls_keypair_clear_key(keypair); + return tls_set_mem(&keypair->key_mem, &keypair->key_len, key, len); +} + +int +tls_keypair_set_ocsp_staple_file(struct tls_keypair *keypair, + struct tls_error *error, const char *ocsp_file) +{ + return tls_config_load_file(error, "ocsp", ocsp_file, + &keypair->ocsp_staple, &keypair->ocsp_staple_len); +} + +int +tls_keypair_set_ocsp_staple_mem(struct tls_keypair *keypair, + struct tls_error *error, const uint8_t *staple, size_t len) +{ + return tls_set_mem(&keypair->ocsp_staple, &keypair->ocsp_staple_len, + staple, len); +} + +void +tls_keypair_free(struct tls_keypair *keypair) +{ + if (keypair == NULL) + return; + + tls_keypair_clear_key(keypair); + + free(keypair->cert_mem); + free(keypair->ocsp_staple); + free(keypair->pubkey_hash); + + free(keypair); +} + +int +tls_keypair_load_cert(struct tls_keypair *keypair, struct tls_error *error, + X509 **cert) +{ + char *errstr = "unknown"; + BIO *cert_bio = NULL; + int ssl_err; + int rv = -1; + + X509_free(*cert); + *cert = NULL; + + if (keypair->cert_mem == NULL) { + tls_error_set(error, "keypair has no certificate"); + goto err; + } + if ((cert_bio = BIO_new_mem_buf(keypair->cert_mem, + keypair->cert_len)) == NULL) { + tls_error_set(error, "failed to create certificate bio"); + goto err; + } + if ((*cert = PEM_read_bio_X509(cert_bio, NULL, tls_password_cb, + NULL)) == NULL) { + if ((ssl_err = ERR_peek_error()) != 0) + errstr = ERR_error_string(ssl_err, NULL); + tls_error_set(error, "failed to load certificate: %s", errstr); + goto err; + } + + rv = 0; + + err: + BIO_free(cert_bio); + + return (rv); +} |