mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-09 13:38:26 -05:00
829 lines
16 KiB
C
Executable File
829 lines
16 KiB
C
Executable File
/* $OpenBSD: tls.c,v 1.85 2020/05/24 15:12:54 jsing Exp $ */
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/*
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* Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/socket.h>
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#include <errno.h>
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#include <limits.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/pem.h>
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#include <openssl/safestack.h>
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#include <openssl/ssl.h>
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#include <openssl/x509.h>
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#include <tls.h>
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#include "tls_internal.h"
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static struct tls_config *tls_config_default;
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static int tls_init_rv = -1;
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static void
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tls_do_init(void)
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{
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OPENSSL_init_ssl(OPENSSL_INIT_NO_LOAD_CONFIG, NULL);
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if (BIO_sock_init() != 1)
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return;
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if ((tls_config_default = tls_config_new_internal()) == NULL)
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return;
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tls_config_default->refcount++;
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tls_init_rv = 0;
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}
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int
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tls_init(void)
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{
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static pthread_once_t once = PTHREAD_ONCE_INIT;
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if (pthread_once(&once, tls_do_init) != 0)
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return -1;
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return tls_init_rv;
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}
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const char *
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tls_error(struct tls *ctx)
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{
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return ctx->error.msg;
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}
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void
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tls_error_clear(struct tls_error *error)
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{
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free(error->msg);
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error->msg = NULL;
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error->num = 0;
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error->tls = 0;
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}
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static int
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tls_error_vset(struct tls_error *error, int errnum, const char *fmt, va_list ap)
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{
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char *errmsg = NULL;
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int rv = -1;
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tls_error_clear(error);
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error->num = errnum;
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error->tls = 1;
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if (vasprintf(&errmsg, fmt, ap) == -1) {
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errmsg = NULL;
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goto err;
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}
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if (errnum == -1) {
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error->msg = errmsg;
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return (0);
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}
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if (asprintf(&error->msg, "%s: %s", errmsg, strerror(errnum)) == -1) {
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error->msg = NULL;
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goto err;
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}
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rv = 0;
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err:
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free(errmsg);
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return (rv);
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}
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int
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tls_error_set(struct tls_error *error, const char *fmt, ...)
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{
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va_list ap;
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int errnum, rv;
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errnum = errno;
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va_start(ap, fmt);
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rv = tls_error_vset(error, errnum, fmt, ap);
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va_end(ap);
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return (rv);
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}
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int
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tls_error_setx(struct tls_error *error, const char *fmt, ...)
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{
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va_list ap;
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int rv;
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va_start(ap, fmt);
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rv = tls_error_vset(error, -1, fmt, ap);
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va_end(ap);
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return (rv);
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}
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int
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tls_config_set_error(struct tls_config *config, const char *fmt, ...)
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{
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va_list ap;
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int errnum, rv;
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errnum = errno;
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va_start(ap, fmt);
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rv = tls_error_vset(&config->error, errnum, fmt, ap);
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va_end(ap);
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return (rv);
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}
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int
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tls_config_set_errorx(struct tls_config *config, const char *fmt, ...)
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{
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va_list ap;
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int rv;
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va_start(ap, fmt);
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rv = tls_error_vset(&config->error, -1, fmt, ap);
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va_end(ap);
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return (rv);
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}
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int
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tls_set_error(struct tls *ctx, const char *fmt, ...)
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{
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va_list ap;
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int errnum, rv;
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errnum = errno;
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va_start(ap, fmt);
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rv = tls_error_vset(&ctx->error, errnum, fmt, ap);
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va_end(ap);
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return (rv);
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}
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int
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tls_set_errorx(struct tls *ctx, const char *fmt, ...)
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{
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va_list ap;
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int rv;
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va_start(ap, fmt);
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rv = tls_error_vset(&ctx->error, -1, fmt, ap);
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va_end(ap);
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return (rv);
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}
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int
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tls_set_ssl_errorx(struct tls *ctx, const char *fmt, ...)
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{
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va_list ap;
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int rv;
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/* Only set an error if a more specific one does not already exist. */
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if (ctx->error.tls != 0)
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return (0);
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va_start(ap, fmt);
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rv = tls_error_vset(&ctx->error, -1, fmt, ap);
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va_end(ap);
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return (rv);
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}
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struct tls_sni_ctx *
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tls_sni_ctx_new(void)
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{
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return (calloc(1, sizeof(struct tls_sni_ctx)));
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}
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void
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tls_sni_ctx_free(struct tls_sni_ctx *sni_ctx)
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{
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if (sni_ctx == NULL)
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return;
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SSL_CTX_free(sni_ctx->ssl_ctx);
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X509_free(sni_ctx->ssl_cert);
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free(sni_ctx);
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}
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struct tls *
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tls_new(void)
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{
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struct tls *ctx;
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if ((ctx = calloc(1, sizeof(*ctx))) == NULL)
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return (NULL);
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tls_reset(ctx);
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if (tls_configure(ctx, tls_config_default) == -1) {
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free(ctx);
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return NULL;
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}
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return (ctx);
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}
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int
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tls_configure(struct tls *ctx, struct tls_config *config)
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{
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if (config == NULL)
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config = tls_config_default;
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pthread_mutex_lock(&config->mutex);
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config->refcount++;
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pthread_mutex_unlock(&config->mutex);
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tls_config_free(ctx->config);
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ctx->config = config;
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ctx->keypair = config->keypair;
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if ((ctx->flags & TLS_SERVER) != 0)
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return (tls_configure_server(ctx));
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return (0);
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}
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int
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tls_cert_hash(X509 *cert, char **hash)
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{
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char d[EVP_MAX_MD_SIZE], *dhex = NULL;
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int dlen, rv = -1;
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free(*hash);
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*hash = NULL;
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if (X509_digest(cert, EVP_sha256(), d, &dlen) != 1)
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goto err;
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if (tls_hex_string(d, dlen, &dhex, NULL) != 0)
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goto err;
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if (asprintf(hash, "SHA256:%s", dhex) == -1) {
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*hash = NULL;
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goto err;
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}
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rv = 0;
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err:
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free(dhex);
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return (rv);
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}
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int
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tls_cert_pubkey_hash(X509 *cert, char **hash)
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{
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char d[EVP_MAX_MD_SIZE], *dhex = NULL;
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int dlen, rv = -1;
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free(*hash);
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*hash = NULL;
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if (X509_pubkey_digest(cert, EVP_sha256(), d, &dlen) != 1)
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goto err;
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if (tls_hex_string(d, dlen, &dhex, NULL) != 0)
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goto err;
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if (asprintf(hash, "SHA256:%s", dhex) == -1) {
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*hash = NULL;
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goto err;
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}
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rv = 0;
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err:
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free(dhex);
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return (rv);
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}
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int
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tls_configure_ssl_keypair(struct tls *ctx, SSL_CTX *ssl_ctx,
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struct tls_keypair *keypair, int required)
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{
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EVP_PKEY *pkey = NULL;
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BIO *bio = NULL;
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if (!required &&
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keypair->cert_mem == NULL &&
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keypair->key_mem == NULL)
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return(0);
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if (keypair->cert_mem != NULL) {
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if (keypair->cert_len > INT_MAX) {
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tls_set_errorx(ctx, "certificate too long");
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goto err;
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}
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if (SSL_CTX_use_certificate_chain_mem(ssl_ctx,
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keypair->cert_mem, keypair->cert_len) != 1) {
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tls_set_errorx(ctx, "failed to load certificate");
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goto err;
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}
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}
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if (keypair->key_mem != NULL) {
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if (keypair->key_len > INT_MAX) {
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tls_set_errorx(ctx, "key too long");
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goto err;
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}
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if ((bio = BIO_new_mem_buf(keypair->key_mem,
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keypair->key_len)) == NULL) {
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tls_set_errorx(ctx, "failed to create buffer");
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goto err;
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}
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if ((pkey = PEM_read_bio_PrivateKey(bio, NULL, tls_password_cb,
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NULL)) == NULL) {
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tls_set_errorx(ctx, "failed to read private key");
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goto err;
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}
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if (keypair->pubkey_hash != NULL) {
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RSA *rsa;
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/* XXX only RSA for now for relayd privsep */
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if ((rsa = EVP_PKEY_get1_RSA(pkey)) != NULL) {
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RSA_set_ex_data(rsa, 0, keypair->pubkey_hash);
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RSA_free(rsa);
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}
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}
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if (SSL_CTX_use_PrivateKey(ssl_ctx, pkey) != 1) {
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tls_set_errorx(ctx, "failed to load private key");
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goto err;
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}
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BIO_free(bio);
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bio = NULL;
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EVP_PKEY_free(pkey);
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pkey = NULL;
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}
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if (!ctx->config->skip_private_key_check &&
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SSL_CTX_check_private_key(ssl_ctx) != 1) {
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tls_set_errorx(ctx, "private/public key mismatch");
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goto err;
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}
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return (0);
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err:
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EVP_PKEY_free(pkey);
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BIO_free(bio);
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return (1);
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}
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int
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tls_configure_ssl(struct tls *ctx, SSL_CTX *ssl_ctx)
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{
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SSL_CTX_clear_mode(ssl_ctx, SSL_MODE_AUTO_RETRY);
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SSL_CTX_set_mode(ssl_ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
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SSL_CTX_set_mode(ssl_ctx, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
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SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_SSLv2);
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SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_SSLv3);
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SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TLSv1);
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SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TLSv1_1);
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SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TLSv1_2);
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SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TLSv1_3);
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if ((ctx->config->protocols & TLS_PROTOCOL_TLSv1_0) == 0)
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SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TLSv1);
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if ((ctx->config->protocols & TLS_PROTOCOL_TLSv1_1) == 0)
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SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TLSv1_1);
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if ((ctx->config->protocols & TLS_PROTOCOL_TLSv1_2) == 0)
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SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TLSv1_2);
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if ((ctx->config->protocols & TLS_PROTOCOL_TLSv1_3) == 0)
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SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TLSv1_3);
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|
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if (ctx->config->alpn != NULL) {
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if (SSL_CTX_set_alpn_protos(ssl_ctx, ctx->config->alpn,
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ctx->config->alpn_len) != 0) {
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tls_set_errorx(ctx, "failed to set alpn");
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goto err;
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|
}
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|
}
|
|
|
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if (ctx->config->ciphers != NULL) {
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if (SSL_CTX_set_cipher_list(ssl_ctx,
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|
ctx->config->ciphers) != 1) {
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tls_set_errorx(ctx, "failed to set ciphers");
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goto err;
|
|
}
|
|
}
|
|
|
|
if (ctx->config->verify_time == 0) {
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|
X509_VERIFY_PARAM_set_flags(ssl_ctx->param,
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X509_V_FLAG_NO_CHECK_TIME);
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|
}
|
|
|
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/* Disable any form of session caching by default */
|
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SSL_CTX_set_session_cache_mode(ssl_ctx, SSL_SESS_CACHE_OFF);
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SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET);
|
|
|
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return (0);
|
|
|
|
err:
|
|
return (-1);
|
|
}
|
|
|
|
static int
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tls_ssl_cert_verify_cb(X509_STORE_CTX *x509_ctx, void *arg)
|
|
{
|
|
struct tls *ctx = arg;
|
|
int x509_err;
|
|
|
|
if (ctx->config->verify_cert == 0)
|
|
return (1);
|
|
|
|
if ((X509_verify_cert(x509_ctx)) < 0) {
|
|
tls_set_errorx(ctx, "X509 verify cert failed");
|
|
return (0);
|
|
}
|
|
|
|
x509_err = X509_STORE_CTX_get_error(x509_ctx);
|
|
if (x509_err == X509_V_OK)
|
|
return (1);
|
|
|
|
tls_set_errorx(ctx, "certificate verification failed: %s",
|
|
X509_verify_cert_error_string(x509_err));
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
tls_configure_ssl_verify(struct tls *ctx, SSL_CTX *ssl_ctx, int verify)
|
|
{
|
|
size_t ca_len = ctx->config->ca_len;
|
|
char *ca_mem = ctx->config->ca_mem;
|
|
char *crl_mem = ctx->config->crl_mem;
|
|
size_t crl_len = ctx->config->crl_len;
|
|
char *ca_free = NULL;
|
|
STACK_OF(X509_INFO) *xis = NULL;
|
|
X509_STORE *store;
|
|
X509_INFO *xi;
|
|
BIO *bio = NULL;
|
|
int rv = -1;
|
|
int i;
|
|
|
|
SSL_CTX_set_verify(ssl_ctx, verify, NULL);
|
|
SSL_CTX_set_cert_verify_callback(ssl_ctx, tls_ssl_cert_verify_cb, ctx);
|
|
|
|
if (ctx->config->verify_depth >= 0)
|
|
SSL_CTX_set_verify_depth(ssl_ctx, ctx->config->verify_depth);
|
|
|
|
if (ctx->config->verify_cert == 0)
|
|
goto done;
|
|
|
|
/* If no CA has been specified, attempt to load the default. */
|
|
if (ctx->config->ca_mem == NULL && ctx->config->ca_path == NULL) {
|
|
if (tls_config_load_file(&ctx->error, "CA", tls_default_ca_cert_file(),
|
|
&ca_mem, &ca_len) != 0)
|
|
goto err;
|
|
ca_free = ca_mem;
|
|
}
|
|
|
|
if (ca_mem != NULL) {
|
|
if (ca_len > INT_MAX) {
|
|
tls_set_errorx(ctx, "ca too long");
|
|
goto err;
|
|
}
|
|
if (SSL_CTX_load_verify_mem(ssl_ctx, ca_mem, ca_len) != 1) {
|
|
tls_set_errorx(ctx, "ssl verify memory setup failure");
|
|
goto err;
|
|
}
|
|
} else if (SSL_CTX_load_verify_locations(ssl_ctx, NULL,
|
|
ctx->config->ca_path) != 1) {
|
|
tls_set_errorx(ctx, "ssl verify locations failure");
|
|
goto err;
|
|
}
|
|
|
|
if (crl_mem != NULL) {
|
|
if (crl_len > INT_MAX) {
|
|
tls_set_errorx(ctx, "crl too long");
|
|
goto err;
|
|
}
|
|
if ((bio = BIO_new_mem_buf(crl_mem, crl_len)) == NULL) {
|
|
tls_set_errorx(ctx, "failed to create buffer");
|
|
goto err;
|
|
}
|
|
if ((xis = PEM_X509_INFO_read_bio(bio, NULL, tls_password_cb,
|
|
NULL)) == NULL) {
|
|
tls_set_errorx(ctx, "failed to parse crl");
|
|
goto err;
|
|
}
|
|
store = SSL_CTX_get_cert_store(ssl_ctx);
|
|
for (i = 0; i < sk_X509_INFO_num(xis); i++) {
|
|
xi = sk_X509_INFO_value(xis, i);
|
|
if (xi->crl == NULL)
|
|
continue;
|
|
if (!X509_STORE_add_crl(store, xi->crl)) {
|
|
tls_set_error(ctx, "failed to add crl");
|
|
goto err;
|
|
}
|
|
xi->crl = NULL;
|
|
}
|
|
X509_VERIFY_PARAM_set_flags(store->param,
|
|
X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL);
|
|
}
|
|
|
|
done:
|
|
rv = 0;
|
|
|
|
err:
|
|
sk_X509_INFO_pop_free(xis, X509_INFO_free);
|
|
BIO_free(bio);
|
|
free(ca_free);
|
|
|
|
return (rv);
|
|
}
|
|
|
|
void
|
|
tls_free(struct tls *ctx)
|
|
{
|
|
if (ctx == NULL)
|
|
return;
|
|
|
|
tls_reset(ctx);
|
|
|
|
free(ctx);
|
|
}
|
|
|
|
void
|
|
tls_reset(struct tls *ctx)
|
|
{
|
|
struct tls_sni_ctx *sni, *nsni;
|
|
|
|
tls_config_free(ctx->config);
|
|
ctx->config = NULL;
|
|
|
|
SSL_CTX_free(ctx->ssl_ctx);
|
|
SSL_free(ctx->ssl_conn);
|
|
X509_free(ctx->ssl_peer_cert);
|
|
|
|
ctx->ssl_conn = NULL;
|
|
ctx->ssl_ctx = NULL;
|
|
ctx->ssl_peer_cert = NULL;
|
|
/* X509 objects in chain are freed with the SSL */
|
|
ctx->ssl_peer_chain = NULL;
|
|
|
|
ctx->socket = -1;
|
|
ctx->state = 0;
|
|
|
|
free(ctx->servername);
|
|
ctx->servername = NULL;
|
|
|
|
free(ctx->error.msg);
|
|
ctx->error.msg = NULL;
|
|
ctx->error.num = -1;
|
|
|
|
tls_conninfo_free(ctx->conninfo);
|
|
ctx->conninfo = NULL;
|
|
|
|
tls_ocsp_free(ctx->ocsp);
|
|
ctx->ocsp = NULL;
|
|
|
|
for (sni = ctx->sni_ctx; sni != NULL; sni = nsni) {
|
|
nsni = sni->next;
|
|
tls_sni_ctx_free(sni);
|
|
}
|
|
ctx->sni_ctx = NULL;
|
|
|
|
ctx->read_cb = NULL;
|
|
ctx->write_cb = NULL;
|
|
ctx->cb_arg = NULL;
|
|
}
|
|
|
|
int
|
|
tls_ssl_error(struct tls *ctx, SSL *ssl_conn, int ssl_ret, const char *prefix)
|
|
{
|
|
const char *errstr = "unknown error";
|
|
unsigned long err;
|
|
int ssl_err;
|
|
|
|
ssl_err = SSL_get_error(ssl_conn, ssl_ret);
|
|
switch (ssl_err) {
|
|
case SSL_ERROR_NONE:
|
|
case SSL_ERROR_ZERO_RETURN:
|
|
return (0);
|
|
|
|
case SSL_ERROR_WANT_READ:
|
|
return (TLS_WANT_POLLIN);
|
|
|
|
case SSL_ERROR_WANT_WRITE:
|
|
return (TLS_WANT_POLLOUT);
|
|
|
|
case SSL_ERROR_SYSCALL:
|
|
if ((err = ERR_peek_error()) != 0) {
|
|
errstr = ERR_error_string(err, NULL);
|
|
} else if (ssl_ret == 0) {
|
|
if ((ctx->state & TLS_HANDSHAKE_COMPLETE) != 0) {
|
|
ctx->state |= TLS_EOF_NO_CLOSE_NOTIFY;
|
|
return (0);
|
|
}
|
|
errstr = "unexpected EOF";
|
|
} else if (ssl_ret == -1) {
|
|
errstr = strerror(errno);
|
|
}
|
|
tls_set_ssl_errorx(ctx, "%s failed: %s", prefix, errstr);
|
|
return (-1);
|
|
|
|
case SSL_ERROR_SSL:
|
|
if ((err = ERR_peek_error()) != 0) {
|
|
errstr = ERR_error_string(err, NULL);
|
|
}
|
|
tls_set_ssl_errorx(ctx, "%s failed: %s", prefix, errstr);
|
|
return (-1);
|
|
|
|
case SSL_ERROR_WANT_CONNECT:
|
|
case SSL_ERROR_WANT_ACCEPT:
|
|
case SSL_ERROR_WANT_X509_LOOKUP:
|
|
default:
|
|
tls_set_ssl_errorx(ctx, "%s failed (%i)", prefix, ssl_err);
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
int
|
|
tls_handshake(struct tls *ctx)
|
|
{
|
|
int rv = -1;
|
|
|
|
tls_error_clear(&ctx->error);
|
|
|
|
if ((ctx->flags & (TLS_CLIENT | TLS_SERVER_CONN)) == 0) {
|
|
tls_set_errorx(ctx, "invalid operation for context");
|
|
goto out;
|
|
}
|
|
|
|
if ((ctx->state & TLS_HANDSHAKE_COMPLETE) != 0) {
|
|
tls_set_errorx(ctx, "handshake already completed");
|
|
goto out;
|
|
}
|
|
|
|
if ((ctx->flags & TLS_CLIENT) != 0)
|
|
rv = tls_handshake_client(ctx);
|
|
else if ((ctx->flags & TLS_SERVER_CONN) != 0)
|
|
rv = tls_handshake_server(ctx);
|
|
|
|
if (rv == 0) {
|
|
ctx->ssl_peer_cert = SSL_get_peer_certificate(ctx->ssl_conn);
|
|
ctx->ssl_peer_chain = SSL_get_peer_cert_chain(ctx->ssl_conn);
|
|
if (tls_conninfo_populate(ctx) == -1)
|
|
rv = -1;
|
|
if (ctx->ocsp == NULL)
|
|
ctx->ocsp = tls_ocsp_setup_from_peer(ctx);
|
|
}
|
|
out:
|
|
/* Prevent callers from performing incorrect error handling */
|
|
errno = 0;
|
|
return (rv);
|
|
}
|
|
|
|
ssize_t
|
|
tls_read(struct tls *ctx, void *buf, size_t buflen)
|
|
{
|
|
ssize_t rv = -1;
|
|
int ssl_ret;
|
|
|
|
tls_error_clear(&ctx->error);
|
|
|
|
if ((ctx->state & TLS_HANDSHAKE_COMPLETE) == 0) {
|
|
if ((rv = tls_handshake(ctx)) != 0)
|
|
goto out;
|
|
}
|
|
|
|
if (buflen > INT_MAX) {
|
|
tls_set_errorx(ctx, "buflen too long");
|
|
goto out;
|
|
}
|
|
|
|
ERR_clear_error();
|
|
if ((ssl_ret = SSL_read(ctx->ssl_conn, buf, buflen)) > 0) {
|
|
rv = (ssize_t)ssl_ret;
|
|
goto out;
|
|
}
|
|
rv = (ssize_t)tls_ssl_error(ctx, ctx->ssl_conn, ssl_ret, "read");
|
|
|
|
out:
|
|
/* Prevent callers from performing incorrect error handling */
|
|
errno = 0;
|
|
return (rv);
|
|
}
|
|
|
|
ssize_t
|
|
tls_write(struct tls *ctx, const void *buf, size_t buflen)
|
|
{
|
|
ssize_t rv = -1;
|
|
int ssl_ret;
|
|
|
|
tls_error_clear(&ctx->error);
|
|
|
|
if ((ctx->state & TLS_HANDSHAKE_COMPLETE) == 0) {
|
|
if ((rv = tls_handshake(ctx)) != 0)
|
|
goto out;
|
|
}
|
|
|
|
if (buflen > INT_MAX) {
|
|
tls_set_errorx(ctx, "buflen too long");
|
|
goto out;
|
|
}
|
|
|
|
ERR_clear_error();
|
|
if ((ssl_ret = SSL_write(ctx->ssl_conn, buf, buflen)) > 0) {
|
|
rv = (ssize_t)ssl_ret;
|
|
goto out;
|
|
}
|
|
rv = (ssize_t)tls_ssl_error(ctx, ctx->ssl_conn, ssl_ret, "write");
|
|
|
|
out:
|
|
/* Prevent callers from performing incorrect error handling */
|
|
errno = 0;
|
|
return (rv);
|
|
}
|
|
|
|
int
|
|
tls_close(struct tls *ctx)
|
|
{
|
|
int ssl_ret;
|
|
int rv = 0;
|
|
|
|
tls_error_clear(&ctx->error);
|
|
|
|
if ((ctx->flags & (TLS_CLIENT | TLS_SERVER_CONN)) == 0) {
|
|
tls_set_errorx(ctx, "invalid operation for context");
|
|
rv = -1;
|
|
goto out;
|
|
}
|
|
|
|
if (ctx->state & TLS_SSL_NEEDS_SHUTDOWN) {
|
|
ERR_clear_error();
|
|
ssl_ret = SSL_shutdown(ctx->ssl_conn);
|
|
if (ssl_ret < 0) {
|
|
rv = tls_ssl_error(ctx, ctx->ssl_conn, ssl_ret,
|
|
"shutdown");
|
|
if (rv == TLS_WANT_POLLIN || rv == TLS_WANT_POLLOUT)
|
|
goto out;
|
|
}
|
|
ctx->state &= ~TLS_SSL_NEEDS_SHUTDOWN;
|
|
}
|
|
|
|
if (ctx->socket != -1) {
|
|
if (shutdown(ctx->socket, SHUT_RDWR) != 0) {
|
|
if (rv == 0 &&
|
|
errno != ENOTCONN && errno != ECONNRESET) {
|
|
tls_set_error(ctx, "shutdown");
|
|
rv = -1;
|
|
}
|
|
}
|
|
if (close(ctx->socket) != 0) {
|
|
if (rv == 0) {
|
|
tls_set_error(ctx, "close");
|
|
rv = -1;
|
|
}
|
|
}
|
|
ctx->socket = -1;
|
|
}
|
|
|
|
if ((ctx->state & TLS_EOF_NO_CLOSE_NOTIFY) != 0) {
|
|
tls_set_errorx(ctx, "EOF without close notify");
|
|
rv = -1;
|
|
}
|
|
|
|
out:
|
|
/* Prevent callers from performing incorrect error handling */
|
|
errno = 0;
|
|
return (rv);
|
|
}
|