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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/crypto/openssl/ssl/ssl_mcnf.c
48150 views
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/*

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 * Copyright 2015-2024 The OpenSSL Project Authors. All Rights Reserved.

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 *

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 * Licensed under the Apache License 2.0 (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 <openssl/conf.h>

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#include <openssl/ssl.h>

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#include "ssl_local.h"

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#include "internal/sslconf.h"

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/* SSL library configuration module. */

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void SSL_add_ssl_module(void)

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{

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    /* Do nothing. This will be added automatically by libcrypto */

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}

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static int ssl_do_config(SSL *s, SSL_CTX *ctx, const char *name, int system)

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{

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    SSL_CONF_CTX *cctx = NULL;

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    size_t i, idx, cmd_count;

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    int err = 1;

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    unsigned int flags;

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    unsigned int conf_diagnostics = 0;

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    const SSL_METHOD *meth;

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    const SSL_CONF_CMD *cmds;

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    OSSL_LIB_CTX *prev_libctx = NULL;

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    OSSL_LIB_CTX *libctx = NULL;

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    if (s == NULL && ctx == NULL) {

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        ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);

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        goto err;

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    }

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    if (name == NULL && system)

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        name = "system_default";

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    if (!conf_ssl_name_find(name, &idx)) {

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        if (!system)

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            ERR_raise_data(ERR_LIB_SSL, SSL_R_INVALID_CONFIGURATION_NAME,

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                           "name=%s", name);

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        goto err;

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    }

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    cmds = conf_ssl_get(idx, &name, &cmd_count);

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    cctx = SSL_CONF_CTX_new();

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    if (cctx == NULL) {

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        /* this is a fatal error, always report */

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        system = 0;

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        goto err;

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    }

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    flags = SSL_CONF_FLAG_FILE;

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    if (!system)

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        flags |= SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_REQUIRE_PRIVATE;

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    if (s != NULL) {

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        meth = s->method;

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        SSL_CONF_CTX_set_ssl(cctx, s);

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        libctx = s->ctx->libctx;

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    } else {

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        meth = ctx->method;

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        SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);

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        libctx = ctx->libctx;

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    }

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    conf_diagnostics = OSSL_LIB_CTX_get_conf_diagnostics(libctx);

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    if (conf_diagnostics)

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        flags |= SSL_CONF_FLAG_SHOW_ERRORS;

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    if (meth->ssl_accept != ssl_undefined_function)

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        flags |= SSL_CONF_FLAG_SERVER;

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    if (meth->ssl_connect != ssl_undefined_function)

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        flags |= SSL_CONF_FLAG_CLIENT;

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    SSL_CONF_CTX_set_flags(cctx, flags);

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    prev_libctx = OSSL_LIB_CTX_set0_default(libctx);

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    err = 0;

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    for (i = 0; i < cmd_count; i++) {

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        char *cmdstr, *arg;

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        int rv;

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        conf_ssl_get_cmd(cmds, i, &cmdstr, &arg);

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        rv = SSL_CONF_cmd(cctx, cmdstr, arg);

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        if (rv <= 0)

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            ++err;

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    }

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    if (!SSL_CONF_CTX_finish(cctx))

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        ++err;

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 err:

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    OSSL_LIB_CTX_set0_default(prev_libctx);

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    SSL_CONF_CTX_free(cctx);

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    return err == 0 || (system && !conf_diagnostics);

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}

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int SSL_config(SSL *s, const char *name)

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{

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    return ssl_do_config(s, NULL, name, 0);

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}

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int SSL_CTX_config(SSL_CTX *ctx, const char *name)

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{

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    return ssl_do_config(NULL, ctx, name, 0);

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}

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int ssl_ctx_system_config(SSL_CTX *ctx)

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{

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    return ssl_do_config(NULL, ctx, NULL, 1);

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}

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