From b811ca06ec929f41f6a6eb80d542412470b454c4 Mon Sep 17 00:00:00 2001 From: Sunil Nimmagadda Date: Tue, 1 Apr 2014 20:19:13 +0500 Subject: Import. --- ssl_privsep.c | 253 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 253 insertions(+) create mode 100644 ssl_privsep.c (limited to 'ssl_privsep.c') diff --git a/ssl_privsep.c b/ssl_privsep.c new file mode 100644 index 0000000..e996769 --- /dev/null +++ b/ssl_privsep.c @@ -0,0 +1,253 @@ +/* $OpenBSD: ssl_privsep.c,v 1.1 2014/01/27 15:49:52 sunil Exp $ */ + +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +/* + * SSL operations needed when running in a privilege separated environment. + * Adapted from openssl's ssl_rsa.c by Pierre-Yves Ritschard . + */ + +#include +#include + +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +int ssl_ctx_use_private_key(SSL_CTX *, char *, off_t); +int ssl_ctx_use_certificate_chain(SSL_CTX *, char *, off_t); +int ssl_ctx_load_verify_memory(SSL_CTX *, char *, off_t); +int ssl_by_mem_ctrl(X509_LOOKUP *, int, const char *, long, char **); + +X509_LOOKUP_METHOD x509_mem_lookup = { + "Load cert from memory", + NULL, /* new */ + NULL, /* free */ + NULL, /* init */ + NULL, /* shutdown */ + ssl_by_mem_ctrl, /* ctrl */ + NULL, /* get_by_subject */ + NULL, /* get_by_issuer_serial */ + NULL, /* get_by_fingerprint */ + NULL, /* get_by_alias */ +}; + +#define X509_L_ADD_MEM 3 + +int +ssl_ctx_use_private_key(SSL_CTX *ctx, char *buf, off_t len) +{ + int ret; + BIO *in; + EVP_PKEY *pkey; + + ret = 0; + + if ((in = BIO_new_mem_buf(buf, len)) == NULL) { + SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_BUF_LIB); + return 0; + } + + pkey = PEM_read_bio_PrivateKey(in, NULL, + ctx->default_passwd_callback, + ctx->default_passwd_callback_userdata); + + if (pkey == NULL) { + SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_PEM_LIB); + goto end; + } + ret = SSL_CTX_use_PrivateKey(ctx, pkey); + EVP_PKEY_free(pkey); +end: + if (in != NULL) + BIO_free(in); + return ret; +} + + +int +ssl_ctx_use_certificate_chain(SSL_CTX *ctx, char *buf, off_t len) +{ + int ret; + BIO *in; + X509 *x; + X509 *ca; + unsigned long err; + + ret = 0; + x = ca = NULL; + + if ((in = BIO_new_mem_buf(buf, len)) == NULL) { + SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE, ERR_R_BUF_LIB); + goto end; + } + + if ((x = PEM_read_bio_X509(in, NULL, + ctx->default_passwd_callback, + ctx->default_passwd_callback_userdata)) == NULL) { + SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE, ERR_R_PEM_LIB); + goto end; + } + + if (!SSL_CTX_use_certificate(ctx, x) || ERR_peek_error() != 0) + goto end; + + /* If we could set up our certificate, now proceed to + * the CA certificates. + */ + + if (ctx->extra_certs != NULL) { + sk_X509_pop_free(ctx->extra_certs, X509_free); + ctx->extra_certs = NULL; + } + + while ((ca = PEM_read_bio_X509(in, NULL, + ctx->default_passwd_callback, + ctx->default_passwd_callback_userdata)) != NULL) { + + if (!SSL_CTX_add_extra_chain_cert(ctx, ca)) + goto end; + } + + err = ERR_peek_last_error(); + if (ERR_GET_LIB(err) == ERR_LIB_PEM && + ERR_GET_REASON(err) == PEM_R_NO_START_LINE) + ERR_clear_error(); + else + goto end; + + ret = 1; +end: + if (ca != NULL) + X509_free(ca); + if (x != NULL) + X509_free(x); + if (in != NULL) + BIO_free(in); + return (ret); +} + +int +ssl_ctx_load_verify_memory(SSL_CTX *ctx, char *buf, off_t len) +{ + X509_LOOKUP *lu; + struct iovec iov; + + if ((lu = X509_STORE_add_lookup(ctx->cert_store, + &x509_mem_lookup)) == NULL) + return (0); + + iov.iov_base = buf; + iov.iov_len = len; + + if (!ssl_by_mem_ctrl(lu, X509_L_ADD_MEM, + (const char *)&iov, X509_FILETYPE_PEM, NULL)) + return (0); + + return (1); +} + +int +ssl_by_mem_ctrl(X509_LOOKUP *lu, int cmd, const char *buf, + long type, char **ret) +{ + STACK_OF(X509_INFO) *inf; + const struct iovec *iov; + X509_INFO *itmp; + BIO *in = NULL; + int i, count = 0; + + iov = (const struct iovec *)buf; + + if (type != X509_FILETYPE_PEM) + goto done; + + if ((in = BIO_new_mem_buf(iov->iov_base, iov->iov_len)) == NULL) + goto done; + + if ((inf = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL)) == NULL) + goto done; + + for (i = 0; i < sk_X509_INFO_num(inf); i++) { + itmp = sk_X509_INFO_value(inf, i); + if (itmp->x509) { + X509_STORE_add_cert(lu->store_ctx, itmp->x509); + count++; + } + if (itmp->crl) { + X509_STORE_add_crl(lu->store_ctx, itmp->crl); + count++; + } + } + sk_X509_INFO_pop_free(inf, X509_INFO_free); + + done: + if (!count) + X509err(X509_F_X509_LOAD_CERT_CRL_FILE,ERR_R_PEM_LIB); + + if (in != NULL) + BIO_free(in); + return (count); +} -- cgit v1.2.3