diff options
author | Mathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com> | 2017-09-13 12:09:40 -0700 |
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committer | Mathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com> | 2017-09-13 12:09:40 -0700 |
commit | b6f94dbeacfc6f0a507413096189304c58dbe66c (patch) | |
tree | bce8c7db22209078618294c51d95a0c033aec7d9 /Cryptlib/OpenSSL/crypto/evp/bio_ok.c | |
parent | 25f7fd1fb389a5f6356f353d16c5ead80dac6bbc (diff) | |
download | efi-boot-shim-upstream/13_git1505328970.9c1c35c5.tar.gz efi-boot-shim-upstream/13_git1505328970.9c1c35c5.zip |
New upstream version 13~git1505328970.9c1c35c5upstream/13_git1505328970.9c1c35c5
Diffstat (limited to 'Cryptlib/OpenSSL/crypto/evp/bio_ok.c')
-rw-r--r-- | Cryptlib/OpenSSL/crypto/evp/bio_ok.c | 260 |
1 files changed, 140 insertions, 120 deletions
diff --git a/Cryptlib/OpenSSL/crypto/evp/bio_ok.c b/Cryptlib/OpenSSL/crypto/evp/bio_ok.c index 7974b963..16e151f1 100644 --- a/Cryptlib/OpenSSL/crypto/evp/bio_ok.c +++ b/Cryptlib/OpenSSL/crypto/evp/bio_ok.c @@ -1,10 +1,59 @@ -/* - * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. +/* crypto/evp/bio_ok.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. * - * Licensed under the OpenSSL license (the "License"). You may not use - * this file except in compliance with the License. You can obtain a copy - * in the file LICENSE in the source distribution or at - * https://www.openssl.org/source/license.html + * 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.] */ /*- @@ -71,12 +120,11 @@ #include <stdio.h> #include <errno.h> #include <assert.h> -#include "internal/cryptlib.h" +#include "cryptlib.h" #include <openssl/buffer.h> -#include "internal/bio.h" +#include <openssl/bio.h> #include <openssl/evp.h> #include <openssl/rand.h> -#include "internal/evp_int.h" static int ok_write(BIO *h, const char *buf, int num); static int ok_read(BIO *h, char *buf, int size); @@ -85,10 +133,10 @@ static int ok_new(BIO *h); static int ok_free(BIO *data); static long ok_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp); -static __owur int sig_out(BIO *b); -static __owur int sig_in(BIO *b); -static __owur int block_out(BIO *b); -static __owur int block_in(BIO *b); +static int sig_out(BIO *b); +static int sig_in(BIO *b); +static int block_out(BIO *b); +static int block_in(BIO *b); #define OK_BLOCK_SIZE (1024*4) #define OK_BLOCK_BLOCK 4 #define IOBS (OK_BLOCK_SIZE+ OK_BLOCK_BLOCK+ 3*EVP_MAX_MD_SIZE) @@ -101,13 +149,13 @@ typedef struct ok_struct { size_t buf_off_save; int cont; /* <= 0 when finished */ int finished; - EVP_MD_CTX *md; + EVP_MD_CTX md; int blockout; /* output block is ready */ int sigio; /* must process signature */ unsigned char buf[IOBS]; } BIO_OK_CTX; -static const BIO_METHOD methods_ok = { +static BIO_METHOD methods_ok = { BIO_TYPE_CIPHER, "reliable", ok_write, ok_read, @@ -119,7 +167,7 @@ static const BIO_METHOD methods_ok = { ok_callback_ctrl, }; -const BIO_METHOD *BIO_f_reliable(void) +BIO_METHOD *BIO_f_reliable(void) { return (&methods_ok); } @@ -128,54 +176,51 @@ static int ok_new(BIO *bi) { BIO_OK_CTX *ctx; - ctx = OPENSSL_zalloc(sizeof(*ctx)); + ctx = (BIO_OK_CTX *)OPENSSL_malloc(sizeof(BIO_OK_CTX)); if (ctx == NULL) - return 0; + return (0); + ctx->buf_len = 0; + ctx->buf_off = 0; + ctx->buf_len_save = 0; + ctx->buf_off_save = 0; ctx->cont = 1; + ctx->finished = 0; + ctx->blockout = 0; ctx->sigio = 1; - ctx->md = EVP_MD_CTX_new(); - if (ctx->md == NULL) { - OPENSSL_free(ctx); - return 0; - } - BIO_set_init(bi, 0); - BIO_set_data(bi, ctx); - return 1; + EVP_MD_CTX_init(&ctx->md); + + bi->init = 0; + bi->ptr = (char *)ctx; + bi->flags = 0; + return (1); } static int ok_free(BIO *a) { - BIO_OK_CTX *ctx; - if (a == NULL) - return 0; - - ctx = BIO_get_data(a); - - EVP_MD_CTX_free(ctx->md); - OPENSSL_clear_free(ctx, sizeof(BIO_OK_CTX)); - BIO_set_data(a, NULL); - BIO_set_init(a, 0); - - return 1; + return (0); + EVP_MD_CTX_cleanup(&((BIO_OK_CTX *)a->ptr)->md); + OPENSSL_cleanse(a->ptr, sizeof(BIO_OK_CTX)); + OPENSSL_free(a->ptr); + a->ptr = NULL; + a->init = 0; + a->flags = 0; + return (1); } static int ok_read(BIO *b, char *out, int outl) { int ret = 0, i, n; BIO_OK_CTX *ctx; - BIO *next; if (out == NULL) - return 0; - - ctx = BIO_get_data(b); - next = BIO_next(b); + return (0); + ctx = (BIO_OK_CTX *)b->ptr; - if ((ctx == NULL) || (next == NULL) || (BIO_get_init(b) == 0)) - return 0; + if ((ctx == NULL) || (b->next_bio == NULL) || (b->init == 0)) + return (0); while (outl > 0) { @@ -214,7 +259,7 @@ static int ok_read(BIO *b, char *out, int outl) /* no clean bytes in buffer -- fill it */ n = IOBS - ctx->buf_len; - i = BIO_read(next, &(ctx->buf[ctx->buf_len]), n); + i = BIO_read(b->next_bio, &(ctx->buf[ctx->buf_len]), n); if (i <= 0) break; /* nothing new */ @@ -245,23 +290,21 @@ static int ok_read(BIO *b, char *out, int outl) BIO_clear_retry_flags(b); BIO_copy_next_retry(b); - return ret; + return (ret); } static int ok_write(BIO *b, const char *in, int inl) { int ret = 0, n, i; BIO_OK_CTX *ctx; - BIO *next; if (inl <= 0) return inl; - ctx = BIO_get_data(b); - next = BIO_next(b); + ctx = (BIO_OK_CTX *)b->ptr; ret = inl; - if ((ctx == NULL) || (next == NULL) || (BIO_get_init(b) == 0)) + if ((ctx == NULL) || (b->next_bio == NULL) || (b->init == 0)) return (0); if (ctx->sigio && !sig_out(b)) @@ -271,7 +314,7 @@ static int ok_write(BIO *b, const char *in, int inl) BIO_clear_retry_flags(b); n = ctx->buf_len - ctx->buf_off; while (ctx->blockout && n > 0) { - i = BIO_write(next, &(ctx->buf[ctx->buf_off]), n); + i = BIO_write(b->next_bio, &(ctx->buf[ctx->buf_off]), n); if (i <= 0) { BIO_copy_next_retry(b); if (!BIO_should_retry(b)) @@ -295,7 +338,8 @@ static int ok_write(BIO *b, const char *in, int inl) n = (inl + ctx->buf_len > OK_BLOCK_SIZE + OK_BLOCK_BLOCK) ? (int)(OK_BLOCK_SIZE + OK_BLOCK_BLOCK - ctx->buf_len) : inl; - memcpy(&ctx->buf[ctx->buf_len], in, n); + memcpy((unsigned char *)(&(ctx->buf[ctx->buf_len])), + (unsigned char *)in, n); ctx->buf_len += n; inl -= n; in += n; @@ -320,10 +364,8 @@ static long ok_ctrl(BIO *b, int cmd, long num, void *ptr) const EVP_MD **ppmd; long ret = 1; int i; - BIO *next; - ctx = BIO_get_data(b); - next = BIO_next(b); + ctx = b->ptr; switch (cmd) { case BIO_CTRL_RESET: @@ -335,19 +377,19 @@ static long ok_ctrl(BIO *b, int cmd, long num, void *ptr) ctx->finished = 0; ctx->blockout = 0; ctx->sigio = 1; - ret = BIO_ctrl(next, cmd, num, ptr); + ret = BIO_ctrl(b->next_bio, cmd, num, ptr); break; case BIO_CTRL_EOF: /* More to read */ if (ctx->cont <= 0) ret = 1; else - ret = BIO_ctrl(next, cmd, num, ptr); + ret = BIO_ctrl(b->next_bio, cmd, num, ptr); break; case BIO_CTRL_PENDING: /* More to read in buffer */ case BIO_CTRL_WPENDING: /* More to read in buffer */ ret = ctx->blockout ? ctx->buf_len - ctx->buf_off : 0; if (ret <= 0) - ret = BIO_ctrl(next, cmd, num, ptr); + ret = BIO_ctrl(b->next_bio, cmd, num, ptr); break; case BIO_CTRL_FLUSH: /* do a final write */ @@ -368,11 +410,11 @@ static long ok_ctrl(BIO *b, int cmd, long num, void *ptr) ctx->cont = (int)ret; /* Finally flush the underlying BIO */ - ret = BIO_ctrl(next, cmd, num, ptr); + ret = BIO_ctrl(b->next_bio, cmd, num, ptr); break; case BIO_C_DO_STATE_MACHINE: BIO_clear_retry_flags(b); - ret = BIO_ctrl(next, cmd, num, ptr); + ret = BIO_ctrl(b->next_bio, cmd, num, ptr); BIO_copy_next_retry(b); break; case BIO_CTRL_INFO: @@ -380,41 +422,36 @@ static long ok_ctrl(BIO *b, int cmd, long num, void *ptr) break; case BIO_C_SET_MD: md = ptr; - if (!EVP_DigestInit_ex(ctx->md, md, NULL)) + if (!EVP_DigestInit_ex(&ctx->md, md, NULL)) return 0; - BIO_set_init(b, 1); + b->init = 1; break; case BIO_C_GET_MD: - if (BIO_get_init(b)) { + if (b->init) { ppmd = ptr; - *ppmd = EVP_MD_CTX_md(ctx->md); + *ppmd = ctx->md.digest; } else ret = 0; break; default: - ret = BIO_ctrl(next, cmd, num, ptr); + ret = BIO_ctrl(b->next_bio, cmd, num, ptr); break; } - return ret; + return (ret); } static long ok_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp) { long ret = 1; - BIO *next; - - next = BIO_next(b); - - if (next == NULL) - return 0; + if (b->next_bio == NULL) + return (0); switch (cmd) { default: - ret = BIO_callback_ctrl(next, cmd, fp); + ret = BIO_callback_ctrl(b->next_bio, cmd, fp); break; } - - return ret; + return (ret); } static void longswap(void *_ptr, size_t len) @@ -441,36 +478,30 @@ static int sig_out(BIO *b) { BIO_OK_CTX *ctx; EVP_MD_CTX *md; - const EVP_MD *digest; - int md_size; - void *md_data; - ctx = BIO_get_data(b); - md = ctx->md; - digest = EVP_MD_CTX_md(md); - md_size = EVP_MD_size(digest); - md_data = EVP_MD_CTX_md_data(md); + ctx = b->ptr; + md = &ctx->md; - if (ctx->buf_len + 2 * md_size > OK_BLOCK_SIZE) + if (ctx->buf_len + 2 * md->digest->md_size > OK_BLOCK_SIZE) return 1; - if (!EVP_DigestInit_ex(md, digest, NULL)) + if (!EVP_DigestInit_ex(md, md->digest, NULL)) goto berr; /* * FIXME: there's absolutely no guarantee this makes any sense at all, * particularly now EVP_MD_CTX has been restructured. */ - if (RAND_bytes(md_data, md_size) <= 0) + if (RAND_bytes(md->md_data, md->digest->md_size) <= 0) goto berr; - memcpy(&(ctx->buf[ctx->buf_len]), md_data, md_size); - longswap(&(ctx->buf[ctx->buf_len]), md_size); - ctx->buf_len += md_size; + memcpy(&(ctx->buf[ctx->buf_len]), md->md_data, md->digest->md_size); + longswap(&(ctx->buf[ctx->buf_len]), md->digest->md_size); + ctx->buf_len += md->digest->md_size; if (!EVP_DigestUpdate(md, WELLKNOWN, strlen(WELLKNOWN))) goto berr; if (!EVP_DigestFinal_ex(md, &(ctx->buf[ctx->buf_len]), NULL)) goto berr; - ctx->buf_len += md_size; + ctx->buf_len += md->digest->md_size; ctx->blockout = 1; ctx->sigio = 0; return 1; @@ -485,31 +516,25 @@ static int sig_in(BIO *b) EVP_MD_CTX *md; unsigned char tmp[EVP_MAX_MD_SIZE]; int ret = 0; - const EVP_MD *digest; - int md_size; - void *md_data; - ctx = BIO_get_data(b); - md = ctx->md; - digest = EVP_MD_CTX_md(md); - md_size = EVP_MD_size(digest); - md_data = EVP_MD_CTX_md_data(md); + ctx = b->ptr; + md = &ctx->md; - if ((int)(ctx->buf_len - ctx->buf_off) < 2 * md_size) + if ((int)(ctx->buf_len - ctx->buf_off) < 2 * md->digest->md_size) return 1; - if (!EVP_DigestInit_ex(md, digest, NULL)) + if (!EVP_DigestInit_ex(md, md->digest, NULL)) goto berr; - memcpy(md_data, &(ctx->buf[ctx->buf_off]), md_size); - longswap(md_data, md_size); - ctx->buf_off += md_size; + memcpy(md->md_data, &(ctx->buf[ctx->buf_off]), md->digest->md_size); + longswap(md->md_data, md->digest->md_size); + ctx->buf_off += md->digest->md_size; if (!EVP_DigestUpdate(md, WELLKNOWN, strlen(WELLKNOWN))) goto berr; if (!EVP_DigestFinal_ex(md, tmp, NULL)) goto berr; - ret = memcmp(&(ctx->buf[ctx->buf_off]), tmp, md_size) == 0; - ctx->buf_off += md_size; + ret = memcmp(&(ctx->buf[ctx->buf_off]), tmp, md->digest->md_size) == 0; + ctx->buf_off += md->digest->md_size; if (ret == 1) { ctx->sigio = 0; if (ctx->buf_len != ctx->buf_off) { @@ -532,13 +557,9 @@ static int block_out(BIO *b) BIO_OK_CTX *ctx; EVP_MD_CTX *md; unsigned long tl; - const EVP_MD *digest; - int md_size; - ctx = BIO_get_data(b); - md = ctx->md; - digest = EVP_MD_CTX_md(md); - md_size = EVP_MD_size(digest); + ctx = b->ptr; + md = &ctx->md; tl = ctx->buf_len - OK_BLOCK_BLOCK; ctx->buf[0] = (unsigned char)(tl >> 24); @@ -550,7 +571,7 @@ static int block_out(BIO *b) goto berr; if (!EVP_DigestFinal_ex(md, &(ctx->buf[ctx->buf_len]), NULL)) goto berr; - ctx->buf_len += md_size; + ctx->buf_len += md->digest->md_size; ctx->blockout = 1; return 1; berr: @@ -564,11 +585,9 @@ static int block_in(BIO *b) EVP_MD_CTX *md; unsigned long tl = 0; unsigned char tmp[EVP_MAX_MD_SIZE]; - int md_size; - ctx = BIO_get_data(b); - md = ctx->md; - md_size = EVP_MD_size(EVP_MD_CTX_md(md)); + ctx = b->ptr; + md = &ctx->md; assert(sizeof(tl) >= OK_BLOCK_BLOCK); /* always true */ tl = ctx->buf[0]; @@ -579,7 +598,7 @@ static int block_in(BIO *b) tl <<= 8; tl |= ctx->buf[3]; - if (ctx->buf_len < tl + OK_BLOCK_BLOCK + md_size) + if (ctx->buf_len < tl + OK_BLOCK_BLOCK + md->digest->md_size) return 1; if (!EVP_DigestUpdate(md, @@ -587,9 +606,10 @@ static int block_in(BIO *b) goto berr; if (!EVP_DigestFinal_ex(md, tmp, NULL)) goto berr; - if (memcmp(&(ctx->buf[tl + OK_BLOCK_BLOCK]), tmp, md_size) == 0) { + if (memcmp(&(ctx->buf[tl + OK_BLOCK_BLOCK]), tmp, md->digest->md_size) == + 0) { /* there might be parts from next block lurking around ! */ - ctx->buf_off_save = tl + OK_BLOCK_BLOCK + md_size; + ctx->buf_off_save = tl + OK_BLOCK_BLOCK + md->digest->md_size; ctx->buf_len_save = ctx->buf_len; ctx->buf_off = OK_BLOCK_BLOCK; ctx->buf_len = tl + OK_BLOCK_BLOCK; |