994 lines
30 KiB
C
994 lines
30 KiB
C
/*
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* Copyright 2012-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "ssl_locl.h"
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#include <openssl/conf.h>
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#include <openssl/objects.h>
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#include <openssl/dh.h>
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#include "internal/nelem.h"
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/*
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* structure holding name tables. This is used for permitted elements in lists
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* such as TLSv1.
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*/
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typedef struct {
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const char *name;
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int namelen;
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unsigned int name_flags;
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unsigned long option_value;
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} ssl_flag_tbl;
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/* Switch table: use for single command line switches like no_tls2 */
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typedef struct {
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unsigned long option_value;
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unsigned int name_flags;
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} ssl_switch_tbl;
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/* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
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#define SSL_TFLAG_INV 0x1
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/* Mask for type of flag referred to */
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#define SSL_TFLAG_TYPE_MASK 0xf00
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/* Flag is for options */
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#define SSL_TFLAG_OPTION 0x000
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/* Flag is for cert_flags */
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#define SSL_TFLAG_CERT 0x100
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/* Flag is for verify mode */
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#define SSL_TFLAG_VFY 0x200
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/* Option can only be used for clients */
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#define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
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/* Option can only be used for servers */
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#define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
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#define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
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#define SSL_FLAG_TBL(str, flag) \
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{str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
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#define SSL_FLAG_TBL_SRV(str, flag) \
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{str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
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#define SSL_FLAG_TBL_CLI(str, flag) \
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{str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
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#define SSL_FLAG_TBL_INV(str, flag) \
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{str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
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#define SSL_FLAG_TBL_SRV_INV(str, flag) \
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{str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
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#define SSL_FLAG_TBL_CERT(str, flag) \
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{str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
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#define SSL_FLAG_VFY_CLI(str, flag) \
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{str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
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#define SSL_FLAG_VFY_SRV(str, flag) \
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{str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
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/*
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* Opaque structure containing SSL configuration context.
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*/
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struct ssl_conf_ctx_st {
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/*
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* Various flags indicating (among other things) which options we will
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* recognise.
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*/
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unsigned int flags;
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/* Prefix and length of commands */
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char *prefix;
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size_t prefixlen;
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/* SSL_CTX or SSL structure to perform operations on */
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SSL_CTX *ctx;
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SSL *ssl;
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/* Pointer to SSL or SSL_CTX options field or NULL if none */
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uint32_t *poptions;
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/* Certificate filenames for each type */
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char *cert_filename[SSL_PKEY_NUM];
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/* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
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uint32_t *pcert_flags;
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/* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
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uint32_t *pvfy_flags;
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/* Pointer to SSL or SSL_CTX min_version field or NULL if none */
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int *min_version;
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/* Pointer to SSL or SSL_CTX max_version field or NULL if none */
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int *max_version;
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/* Current flag table being worked on */
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const ssl_flag_tbl *tbl;
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/* Size of table */
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size_t ntbl;
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/* Client CA names */
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STACK_OF(X509_NAME) *canames;
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};
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static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
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unsigned long option_value, int onoff)
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{
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uint32_t *pflags;
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if (cctx->poptions == NULL)
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return;
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if (name_flags & SSL_TFLAG_INV)
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onoff ^= 1;
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switch (name_flags & SSL_TFLAG_TYPE_MASK) {
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case SSL_TFLAG_CERT:
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pflags = cctx->pcert_flags;
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break;
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case SSL_TFLAG_VFY:
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pflags = cctx->pvfy_flags;
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break;
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case SSL_TFLAG_OPTION:
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pflags = cctx->poptions;
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break;
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default:
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return;
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}
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if (onoff)
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*pflags |= option_value;
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else
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*pflags &= ~option_value;
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}
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static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
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const char *name, int namelen, int onoff)
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{
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/* If name not relevant for context skip */
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if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
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return 0;
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if (namelen == -1) {
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if (strcmp(tbl->name, name))
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return 0;
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} else if (tbl->namelen != namelen || strncasecmp(tbl->name, name, namelen))
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return 0;
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ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
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return 1;
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}
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static int ssl_set_option_list(const char *elem, int len, void *usr)
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{
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SSL_CONF_CTX *cctx = usr;
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size_t i;
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const ssl_flag_tbl *tbl;
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int onoff = 1;
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/*
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* len == -1 indicates not being called in list context, just for single
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* command line switches, so don't allow +, -.
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*/
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if (elem == NULL)
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return 0;
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if (len != -1) {
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if (*elem == '+') {
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elem++;
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len--;
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onoff = 1;
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} else if (*elem == '-') {
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elem++;
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len--;
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onoff = 0;
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}
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}
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for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
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if (ssl_match_option(cctx, tbl, elem, len, onoff))
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return 1;
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}
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return 0;
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}
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/* Set supported signature algorithms */
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static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
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{
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int rv;
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if (cctx->ssl)
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rv = SSL_set1_sigalgs_list(cctx->ssl, value);
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/* NB: ctx == NULL performs syntax checking only */
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else
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rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
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return rv > 0;
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}
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/* Set supported client signature algorithms */
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static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
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{
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int rv;
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if (cctx->ssl)
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rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
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/* NB: ctx == NULL performs syntax checking only */
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else
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rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
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return rv > 0;
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}
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static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
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{
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int rv;
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if (cctx->ssl)
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rv = SSL_set1_groups_list(cctx->ssl, value);
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/* NB: ctx == NULL performs syntax checking only */
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else
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rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
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return rv > 0;
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}
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/* This is the old name for cmd_Groups - retained for backwards compatibility */
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static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
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{
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return cmd_Groups(cctx, value);
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}
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#ifndef OPENSSL_NO_EC
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/* ECDH temporary parameters */
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static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
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{
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int rv = 1;
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EC_KEY *ecdh;
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int nid;
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/* Ignore values supported by 1.0.2 for the automatic selection */
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if ((cctx->flags & SSL_CONF_FLAG_FILE)
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&& (strcasecmp(value, "+automatic") == 0
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|| strcasecmp(value, "automatic") == 0))
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return 1;
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if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
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strcmp(value, "auto") == 0)
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return 1;
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nid = EC_curve_nist2nid(value);
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if (nid == NID_undef)
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nid = OBJ_sn2nid(value);
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if (nid == 0)
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return 0;
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ecdh = EC_KEY_new_by_curve_name(nid);
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if (!ecdh)
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return 0;
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if (cctx->ctx)
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rv = SSL_CTX_set_tmp_ecdh(cctx->ctx, ecdh);
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else if (cctx->ssl)
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rv = SSL_set_tmp_ecdh(cctx->ssl, ecdh);
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EC_KEY_free(ecdh);
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return rv > 0;
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}
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#endif
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static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value)
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{
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int rv = 1;
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if (cctx->ctx)
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rv = SSL_CTX_set_cipher_list(cctx->ctx, value);
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if (cctx->ssl)
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rv = SSL_set_cipher_list(cctx->ssl, value);
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return rv > 0;
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}
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static int cmd_Ciphersuites(SSL_CONF_CTX *cctx, const char *value)
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{
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int rv = 1;
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if (cctx->ctx)
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rv = SSL_CTX_set_ciphersuites(cctx->ctx, value);
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if (cctx->ssl)
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rv = SSL_set_ciphersuites(cctx->ssl, value);
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return rv > 0;
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}
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static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value)
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{
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static const ssl_flag_tbl ssl_protocol_list[] = {
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SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK),
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SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2),
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SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3),
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SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1),
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SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1),
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SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2),
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SSL_FLAG_TBL_INV("TLSv1.3", SSL_OP_NO_TLSv1_3),
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SSL_FLAG_TBL_INV("DTLSv1", SSL_OP_NO_DTLSv1),
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SSL_FLAG_TBL_INV("DTLSv1.2", SSL_OP_NO_DTLSv1_2)
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};
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cctx->tbl = ssl_protocol_list;
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cctx->ntbl = OSSL_NELEM(ssl_protocol_list);
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return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
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}
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/*
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* protocol_from_string - converts a protocol version string to a number
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*
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* Returns -1 on failure or the version on success
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*/
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static int protocol_from_string(const char *value)
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{
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struct protocol_versions {
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const char *name;
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int version;
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};
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static const struct protocol_versions versions[] = {
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{"None", 0},
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{"SSLv3", SSL3_VERSION},
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{"TLSv1", TLS1_VERSION},
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{"TLSv1.1", TLS1_1_VERSION},
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{"TLSv1.2", TLS1_2_VERSION},
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{"TLSv1.3", TLS1_3_VERSION},
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{"DTLSv1", DTLS1_VERSION},
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{"DTLSv1.2", DTLS1_2_VERSION}
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};
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size_t i;
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size_t n = OSSL_NELEM(versions);
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for (i = 0; i < n; i++)
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if (strcmp(versions[i].name, value) == 0)
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return versions[i].version;
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return -1;
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}
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static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
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{
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int method_version;
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int new_version;
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if (cctx->ctx != NULL)
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method_version = cctx->ctx->method->version;
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else if (cctx->ssl != NULL)
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method_version = cctx->ssl->ctx->method->version;
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else
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return 0;
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if ((new_version = protocol_from_string(value)) < 0)
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return 0;
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return ssl_set_version_bound(method_version, new_version, bound);
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}
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/*
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* cmd_MinProtocol - Set min protocol version
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* @cctx: config structure to save settings in
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* @value: The min protocol version in string form
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*
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* Returns 1 on success and 0 on failure.
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*/
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static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
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{
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return min_max_proto(cctx, value, cctx->min_version);
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}
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/*
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* cmd_MaxProtocol - Set max protocol version
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* @cctx: config structure to save settings in
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* @value: The max protocol version in string form
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*
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* Returns 1 on success and 0 on failure.
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*/
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static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
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{
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return min_max_proto(cctx, value, cctx->max_version);
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}
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static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
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{
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static const ssl_flag_tbl ssl_option_list[] = {
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SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
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SSL_FLAG_TBL_INV("EmptyFragments",
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SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
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SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
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SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
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SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
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SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
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SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
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SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
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SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
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SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
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SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
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SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
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SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
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SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX),
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SSL_FLAG_TBL("PrioritizeChaCha", SSL_OP_PRIORITIZE_CHACHA),
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SSL_FLAG_TBL("MiddleboxCompat", SSL_OP_ENABLE_MIDDLEBOX_COMPAT),
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SSL_FLAG_TBL_INV("AntiReplay", SSL_OP_NO_ANTI_REPLAY)
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};
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if (value == NULL)
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return -3;
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cctx->tbl = ssl_option_list;
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cctx->ntbl = OSSL_NELEM(ssl_option_list);
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return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
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}
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static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
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{
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static const ssl_flag_tbl ssl_vfy_list[] = {
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SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
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SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
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SSL_FLAG_VFY_SRV("Require",
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SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
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SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE),
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SSL_FLAG_VFY_SRV("RequestPostHandshake",
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SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE),
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SSL_FLAG_VFY_SRV("RequirePostHandshake",
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SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE |
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SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
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};
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if (value == NULL)
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return -3;
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cctx->tbl = ssl_vfy_list;
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cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
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return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
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}
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static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
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{
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int rv = 1;
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CERT *c = NULL;
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if (cctx->ctx) {
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rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
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c = cctx->ctx->cert;
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}
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if (cctx->ssl) {
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rv = SSL_use_certificate_chain_file(cctx->ssl, value);
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c = cctx->ssl->cert;
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}
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if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
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char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
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OPENSSL_free(*pfilename);
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*pfilename = OPENSSL_strdup(value);
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if (!*pfilename)
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rv = 0;
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}
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return rv > 0;
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}
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static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
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{
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int rv = 1;
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if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
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return -2;
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if (cctx->ctx)
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rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
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if (cctx->ssl)
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rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
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return rv > 0;
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}
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static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
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{
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int rv = 1;
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if (cctx->ctx)
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rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
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return rv > 0;
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}
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static int do_store(SSL_CONF_CTX *cctx,
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const char *CAfile, const char *CApath, int verify_store)
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{
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CERT *cert;
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X509_STORE **st;
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if (cctx->ctx)
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cert = cctx->ctx->cert;
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|
else if (cctx->ssl)
|
|
cert = cctx->ssl->cert;
|
|
else
|
|
return 1;
|
|
st = verify_store ? &cert->verify_store : &cert->chain_store;
|
|
if (*st == NULL) {
|
|
*st = X509_STORE_new();
|
|
if (*st == NULL)
|
|
return 0;
|
|
}
|
|
return X509_STORE_load_locations(*st, CAfile, CApath) > 0;
|
|
}
|
|
|
|
static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
return do_store(cctx, NULL, value, 0);
|
|
}
|
|
|
|
static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
return do_store(cctx, value, NULL, 0);
|
|
}
|
|
|
|
static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
return do_store(cctx, NULL, value, 1);
|
|
}
|
|
|
|
static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
return do_store(cctx, value, NULL, 1);
|
|
}
|
|
|
|
static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
if (cctx->canames == NULL)
|
|
cctx->canames = sk_X509_NAME_new_null();
|
|
if (cctx->canames == NULL)
|
|
return 0;
|
|
return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
|
|
}
|
|
|
|
static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
return cmd_RequestCAFile(cctx, value);
|
|
}
|
|
|
|
static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
if (cctx->canames == NULL)
|
|
cctx->canames = sk_X509_NAME_new_null();
|
|
if (cctx->canames == NULL)
|
|
return 0;
|
|
return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
|
|
}
|
|
|
|
static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
return cmd_RequestCAPath(cctx, value);
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_DH
|
|
static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
int rv = 0;
|
|
DH *dh = NULL;
|
|
BIO *in = NULL;
|
|
if (cctx->ctx || cctx->ssl) {
|
|
in = BIO_new(BIO_s_file());
|
|
if (in == NULL)
|
|
goto end;
|
|
if (BIO_read_filename(in, value) <= 0)
|
|
goto end;
|
|
dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
|
|
if (dh == NULL)
|
|
goto end;
|
|
} else
|
|
return 1;
|
|
if (cctx->ctx)
|
|
rv = SSL_CTX_set_tmp_dh(cctx->ctx, dh);
|
|
if (cctx->ssl)
|
|
rv = SSL_set_tmp_dh(cctx->ssl, dh);
|
|
end:
|
|
DH_free(dh);
|
|
BIO_free(in);
|
|
return rv > 0;
|
|
}
|
|
#endif
|
|
|
|
static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
int rv = 0;
|
|
int block_size = atoi(value);
|
|
|
|
/*
|
|
* All we care about is a non-negative value,
|
|
* the setters check the range
|
|
*/
|
|
if (block_size >= 0) {
|
|
if (cctx->ctx)
|
|
rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
|
|
if (cctx->ssl)
|
|
rv = SSL_set_block_padding(cctx->ssl, block_size);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
|
|
static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
|
|
{
|
|
int rv = 0;
|
|
int num_tickets = atoi(value);
|
|
|
|
if (num_tickets >= 0) {
|
|
if (cctx->ctx)
|
|
rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
|
|
if (cctx->ssl)
|
|
rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
typedef struct {
|
|
int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
|
|
const char *str_file;
|
|
const char *str_cmdline;
|
|
unsigned short flags;
|
|
unsigned short value_type;
|
|
} ssl_conf_cmd_tbl;
|
|
|
|
/* Table of supported parameters */
|
|
|
|
#define SSL_CONF_CMD(name, cmdopt, flags, type) \
|
|
{cmd_##name, #name, cmdopt, flags, type}
|
|
|
|
#define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
|
|
SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
|
|
|
|
#define SSL_CONF_CMD_SWITCH(name, flags) \
|
|
{0, NULL, name, flags, SSL_CONF_TYPE_NONE}
|
|
|
|
/* See apps/apps.h if you change this table. */
|
|
static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
|
|
SSL_CONF_CMD_SWITCH("no_ssl3", 0),
|
|
SSL_CONF_CMD_SWITCH("no_tls1", 0),
|
|
SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
|
|
SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
|
|
SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
|
|
SSL_CONF_CMD_SWITCH("bugs", 0),
|
|
SSL_CONF_CMD_SWITCH("no_comp", 0),
|
|
SSL_CONF_CMD_SWITCH("comp", 0),
|
|
SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
|
|
SSL_CONF_CMD_SWITCH("no_ticket", 0),
|
|
SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
|
|
SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
|
|
SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_SERVER),
|
|
SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
|
|
SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
|
|
SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
|
|
SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
|
|
SSL_CONF_CMD_SWITCH("prioritize_chacha", SSL_CONF_FLAG_SERVER),
|
|
SSL_CONF_CMD_SWITCH("strict", 0),
|
|
SSL_CONF_CMD_SWITCH("no_middlebox", 0),
|
|
SSL_CONF_CMD_SWITCH("anti_replay", SSL_CONF_FLAG_SERVER),
|
|
SSL_CONF_CMD_SWITCH("no_anti_replay", SSL_CONF_FLAG_SERVER),
|
|
SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
|
|
SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
|
|
SSL_CONF_CMD_STRING(Curves, "curves", 0),
|
|
SSL_CONF_CMD_STRING(Groups, "groups", 0),
|
|
#ifndef OPENSSL_NO_EC
|
|
SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
|
|
#endif
|
|
SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
|
|
SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
|
|
SSL_CONF_CMD_STRING(Protocol, NULL, 0),
|
|
SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
|
|
SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
|
|
SSL_CONF_CMD_STRING(Options, NULL, 0),
|
|
SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
|
|
SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_FILE),
|
|
SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_FILE),
|
|
SSL_CONF_CMD(ServerInfoFile, NULL,
|
|
SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_FILE),
|
|
SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_DIR),
|
|
SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_FILE),
|
|
SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_DIR),
|
|
SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_FILE),
|
|
SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_FILE),
|
|
SSL_CONF_CMD(ClientCAFile, NULL,
|
|
SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_FILE),
|
|
SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_DIR),
|
|
SSL_CONF_CMD(ClientCAPath, NULL,
|
|
SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_DIR),
|
|
#ifndef OPENSSL_NO_DH
|
|
SSL_CONF_CMD(DHParameters, "dhparam",
|
|
SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
|
|
SSL_CONF_TYPE_FILE),
|
|
#endif
|
|
SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
|
|
SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
|
|
};
|
|
|
|
/* Supported switches: must match order of switches in ssl_conf_cmds */
|
|
static const ssl_switch_tbl ssl_cmd_switches[] = {
|
|
{SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
|
|
{SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
|
|
{SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
|
|
{SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
|
|
{SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
|
|
{SSL_OP_ALL, 0}, /* bugs */
|
|
{SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
|
|
{SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
|
|
{SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
|
|
{SSL_OP_NO_TICKET, 0}, /* no_ticket */
|
|
{SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
|
|
/* legacy_renegotiation */
|
|
{SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
|
|
/* legacy_server_connect */
|
|
{SSL_OP_LEGACY_SERVER_CONNECT, 0},
|
|
/* no_renegotiation */
|
|
{SSL_OP_NO_RENEGOTIATION, 0},
|
|
/* no_resumption_on_reneg */
|
|
{SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
|
|
/* no_legacy_server_connect */
|
|
{SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
|
|
/* allow_no_dhe_kex */
|
|
{SSL_OP_ALLOW_NO_DHE_KEX, 0},
|
|
/* chacha reprioritization */
|
|
{SSL_OP_PRIORITIZE_CHACHA, 0},
|
|
{SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
|
|
/* no_middlebox */
|
|
{SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
|
|
/* anti_replay */
|
|
{SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
|
|
/* no_anti_replay */
|
|
{SSL_OP_NO_ANTI_REPLAY, 0},
|
|
};
|
|
|
|
static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
|
|
{
|
|
if (!pcmd || !*pcmd)
|
|
return 0;
|
|
/* If a prefix is set, check and skip */
|
|
if (cctx->prefix) {
|
|
if (strlen(*pcmd) <= cctx->prefixlen)
|
|
return 0;
|
|
if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
|
|
strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
|
|
return 0;
|
|
if (cctx->flags & SSL_CONF_FLAG_FILE &&
|
|
strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
|
|
return 0;
|
|
*pcmd += cctx->prefixlen;
|
|
} else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
|
|
if (**pcmd != '-' || !(*pcmd)[1])
|
|
return 0;
|
|
*pcmd += 1;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Determine if a command is allowed according to cctx flags */
|
|
static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
|
|
{
|
|
unsigned int tfl = t->flags;
|
|
unsigned int cfl = cctx->flags;
|
|
if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
|
|
return 0;
|
|
if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
|
|
return 0;
|
|
if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
|
|
&& !(cfl & SSL_CONF_FLAG_CERTIFICATE))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
|
|
const char *cmd)
|
|
{
|
|
const ssl_conf_cmd_tbl *t;
|
|
size_t i;
|
|
if (cmd == NULL)
|
|
return NULL;
|
|
|
|
/* Look for matching parameter name in table */
|
|
for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
|
|
if (ssl_conf_cmd_allowed(cctx, t)) {
|
|
if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
|
|
if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
|
|
return t;
|
|
}
|
|
if (cctx->flags & SSL_CONF_FLAG_FILE) {
|
|
if (t->str_file && strcasecmp(t->str_file, cmd) == 0)
|
|
return t;
|
|
}
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
|
|
{
|
|
/* Find index of command in table */
|
|
size_t idx = cmd - ssl_conf_cmds;
|
|
const ssl_switch_tbl *scmd;
|
|
/* Sanity check index */
|
|
if (idx >= OSSL_NELEM(ssl_cmd_switches))
|
|
return 0;
|
|
/* Obtain switches entry with same index */
|
|
scmd = ssl_cmd_switches + idx;
|
|
ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
|
|
return 1;
|
|
}
|
|
|
|
int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
|
|
{
|
|
const ssl_conf_cmd_tbl *runcmd;
|
|
if (cmd == NULL) {
|
|
SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_INVALID_NULL_CMD_NAME);
|
|
return 0;
|
|
}
|
|
|
|
if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
|
|
return -2;
|
|
|
|
runcmd = ssl_conf_cmd_lookup(cctx, cmd);
|
|
|
|
if (runcmd) {
|
|
int rv;
|
|
if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
|
|
return ctrl_switch_option(cctx, runcmd);
|
|
}
|
|
if (value == NULL)
|
|
return -3;
|
|
rv = runcmd->cmd(cctx, value);
|
|
if (rv > 0)
|
|
return 2;
|
|
if (rv == -2)
|
|
return -2;
|
|
if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
|
|
SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_BAD_VALUE);
|
|
ERR_add_error_data(4, "cmd=", cmd, ", value=", value);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
|
|
SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_UNKNOWN_CMD_NAME);
|
|
ERR_add_error_data(2, "cmd=", cmd);
|
|
}
|
|
|
|
return -2;
|
|
}
|
|
|
|
int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
|
|
{
|
|
int rv;
|
|
const char *arg = NULL, *argn;
|
|
if (pargc && *pargc == 0)
|
|
return 0;
|
|
if (!pargc || *pargc > 0)
|
|
arg = **pargv;
|
|
if (arg == NULL)
|
|
return 0;
|
|
if (!pargc || *pargc > 1)
|
|
argn = (*pargv)[1];
|
|
else
|
|
argn = NULL;
|
|
cctx->flags &= ~SSL_CONF_FLAG_FILE;
|
|
cctx->flags |= SSL_CONF_FLAG_CMDLINE;
|
|
rv = SSL_CONF_cmd(cctx, arg, argn);
|
|
if (rv > 0) {
|
|
/* Success: update pargc, pargv */
|
|
(*pargv) += rv;
|
|
if (pargc)
|
|
(*pargc) -= rv;
|
|
return rv;
|
|
}
|
|
/* Unknown switch: indicate no arguments processed */
|
|
if (rv == -2)
|
|
return 0;
|
|
/* Some error occurred processing command, return fatal error */
|
|
if (rv == 0)
|
|
return -1;
|
|
return rv;
|
|
}
|
|
|
|
int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
|
|
{
|
|
if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
|
|
const ssl_conf_cmd_tbl *runcmd;
|
|
runcmd = ssl_conf_cmd_lookup(cctx, cmd);
|
|
if (runcmd)
|
|
return runcmd->value_type;
|
|
}
|
|
return SSL_CONF_TYPE_UNKNOWN;
|
|
}
|
|
|
|
SSL_CONF_CTX *SSL_CONF_CTX_new(void)
|
|
{
|
|
SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
|
|
|
|
return ret;
|
|
}
|
|
|
|
int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
|
|
{
|
|
/* See if any certificates are missing private keys */
|
|
size_t i;
|
|
CERT *c = NULL;
|
|
if (cctx->ctx)
|
|
c = cctx->ctx->cert;
|
|
else if (cctx->ssl)
|
|
c = cctx->ssl->cert;
|
|
if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
|
|
for (i = 0; i < SSL_PKEY_NUM; i++) {
|
|
const char *p = cctx->cert_filename[i];
|
|
/*
|
|
* If missing private key try to load one from certificate file
|
|
*/
|
|
if (p && !c->pkeys[i].privatekey) {
|
|
if (!cmd_PrivateKey(cctx, p))
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
if (cctx->canames) {
|
|
if (cctx->ssl)
|
|
SSL_set0_CA_list(cctx->ssl, cctx->canames);
|
|
else if (cctx->ctx)
|
|
SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
|
|
else
|
|
sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
|
|
cctx->canames = NULL;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
|
|
{
|
|
if (cctx) {
|
|
size_t i;
|
|
for (i = 0; i < SSL_PKEY_NUM; i++)
|
|
OPENSSL_free(cctx->cert_filename[i]);
|
|
OPENSSL_free(cctx->prefix);
|
|
sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
|
|
OPENSSL_free(cctx);
|
|
}
|
|
}
|
|
|
|
unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
|
|
{
|
|
cctx->flags |= flags;
|
|
return cctx->flags;
|
|
}
|
|
|
|
unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
|
|
{
|
|
cctx->flags &= ~flags;
|
|
return cctx->flags;
|
|
}
|
|
|
|
int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
|
|
{
|
|
char *tmp = NULL;
|
|
if (pre) {
|
|
tmp = OPENSSL_strdup(pre);
|
|
if (tmp == NULL)
|
|
return 0;
|
|
}
|
|
OPENSSL_free(cctx->prefix);
|
|
cctx->prefix = tmp;
|
|
if (tmp)
|
|
cctx->prefixlen = strlen(tmp);
|
|
else
|
|
cctx->prefixlen = 0;
|
|
return 1;
|
|
}
|
|
|
|
void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
|
|
{
|
|
cctx->ssl = ssl;
|
|
cctx->ctx = NULL;
|
|
if (ssl) {
|
|
cctx->poptions = &ssl->options;
|
|
cctx->min_version = &ssl->min_proto_version;
|
|
cctx->max_version = &ssl->max_proto_version;
|
|
cctx->pcert_flags = &ssl->cert->cert_flags;
|
|
cctx->pvfy_flags = &ssl->verify_mode;
|
|
} else {
|
|
cctx->poptions = NULL;
|
|
cctx->min_version = NULL;
|
|
cctx->max_version = NULL;
|
|
cctx->pcert_flags = NULL;
|
|
cctx->pvfy_flags = NULL;
|
|
}
|
|
}
|
|
|
|
void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
|
|
{
|
|
cctx->ctx = ctx;
|
|
cctx->ssl = NULL;
|
|
if (ctx) {
|
|
cctx->poptions = &ctx->options;
|
|
cctx->min_version = &ctx->min_proto_version;
|
|
cctx->max_version = &ctx->max_proto_version;
|
|
cctx->pcert_flags = &ctx->cert->cert_flags;
|
|
cctx->pvfy_flags = &ctx->verify_mode;
|
|
} else {
|
|
cctx->poptions = NULL;
|
|
cctx->min_version = NULL;
|
|
cctx->max_version = NULL;
|
|
cctx->pcert_flags = NULL;
|
|
cctx->pvfy_flags = NULL;
|
|
}
|
|
}
|