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author | Adam Langley <agl@google.com> | 2015-01-22 14:27:53 -0800 |
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committer | Adam Langley <agl@google.com> | 2015-01-30 16:52:14 -0800 |
commit | d9e397b599b13d642138480a28c14db7a136bf05 (patch) | |
tree | 34bab61dc4ce323b123ad4614dbc07e86ea2f9ef /src/crypto/buf | |
download | external_boringssl-d9e397b599b13d642138480a28c14db7a136bf05.zip external_boringssl-d9e397b599b13d642138480a28c14db7a136bf05.tar.gz external_boringssl-d9e397b599b13d642138480a28c14db7a136bf05.tar.bz2 |
Initial commit of BoringSSL for Android.
Diffstat (limited to 'src/crypto/buf')
-rw-r--r-- | src/crypto/buf/CMakeLists.txt | 10 | ||||
-rw-r--r-- | src/crypto/buf/buf.c | 235 | ||||
-rw-r--r-- | src/crypto/buf/buf_error.c | 25 |
3 files changed, 270 insertions, 0 deletions
diff --git a/src/crypto/buf/CMakeLists.txt b/src/crypto/buf/CMakeLists.txt new file mode 100644 index 0000000..dabf8d1 --- /dev/null +++ b/src/crypto/buf/CMakeLists.txt @@ -0,0 +1,10 @@ +include_directories(. .. ../../include) + +add_library( + buf + + OBJECT + + buf.c + buf_error.c +) diff --git a/src/crypto/buf/buf.c b/src/crypto/buf/buf.c new file mode 100644 index 0000000..5769e77 --- /dev/null +++ b/src/crypto/buf/buf.c @@ -0,0 +1,235 @@ +/* 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.] */ + +#include <openssl/buf.h> + +#include <string.h> + +#include <openssl/mem.h> +#include <openssl/err.h> + + +BUF_MEM *BUF_MEM_new(void) { + BUF_MEM *ret; + + ret = OPENSSL_malloc(sizeof(BUF_MEM)); + if (ret == NULL) { + OPENSSL_PUT_ERROR(BUF, BUF_MEM_new, ERR_R_MALLOC_FAILURE); + return NULL; + } + + memset(ret, 0, sizeof(BUF_MEM)); + return ret; +} + +void BUF_MEM_free(BUF_MEM *buf) { + if (buf == NULL) { + return; + } + + if (buf->data != NULL) { + OPENSSL_cleanse(buf->data, buf->max); + OPENSSL_free(buf->data); + } + + OPENSSL_free(buf); +} + +static size_t buf_mem_grow(BUF_MEM *buf, size_t len, char clean) { + char *new_buf; + size_t n, alloc_size; + + if (buf->length >= len) { + buf->length = len; + return len; + } + if (buf->max >= len) { + memset(&buf->data[buf->length], 0, len - buf->length); + buf->length = len; + return len; + } + + n = len + 3; + if (n < len) { + /* overflow */ + OPENSSL_PUT_ERROR(BUF, buf_mem_grow, ERR_R_MALLOC_FAILURE); + return 0; + } + n = n / 3; + alloc_size = n * 4; + if (alloc_size / 4 != n) { + /* overflow */ + OPENSSL_PUT_ERROR(BUF, buf_mem_grow, ERR_R_MALLOC_FAILURE); + return 0; + } + + if (buf->data == NULL) { + new_buf = OPENSSL_malloc(alloc_size); + } else { + if (clean) { + new_buf = OPENSSL_realloc_clean(buf->data, buf->max, alloc_size); + } else { + new_buf = OPENSSL_realloc(buf->data, alloc_size); + } + } + + if (new_buf == NULL) { + OPENSSL_PUT_ERROR(BUF, buf_mem_grow, ERR_R_MALLOC_FAILURE); + len = 0; + } else { + buf->data = new_buf; + buf->max = alloc_size; + memset(&buf->data[buf->length], 0, len - buf->length); + buf->length = len; + } + + return len; +} + +size_t BUF_MEM_grow(BUF_MEM *buf, size_t len) { + return buf_mem_grow(buf, len, 0 /* don't clear old buffer contents. */); +} + +size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len) { + return buf_mem_grow(buf, len, 1 /* clear old buffer contents. */); +} + +char *BUF_strdup(const char *buf) { + if (buf == NULL) { + return NULL; + } + + return BUF_strndup(buf, strlen(buf)); +} + +size_t BUF_strnlen(const char *str, size_t max_len) { + size_t i; + + for (i = 0; i < max_len; i++) { + if (str[i] == 0) { + break; + } + } + + return i; +} + +char *BUF_strndup(const char *buf, size_t size) { + char *ret; + size_t alloc_size; + + if (buf == NULL) { + return NULL; + } + + size = BUF_strnlen(buf, size); + + alloc_size = size + 1; + if (alloc_size < size) { + /* overflow */ + OPENSSL_PUT_ERROR(BUF, BUF_strndup, ERR_R_MALLOC_FAILURE); + return NULL; + } + ret = OPENSSL_malloc(alloc_size); + if (ret == NULL) { + OPENSSL_PUT_ERROR(BUF, BUF_strndup, ERR_R_MALLOC_FAILURE); + return NULL; + } + + memcpy(ret, buf, size); + ret[size] = '\0'; + return ret; +} + +size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size) { + size_t l = 0; + + for (; dst_size > 1 && *src; dst_size--) { + *dst++ = *src++; + l++; + } + + if (dst_size) { + *dst = 0; + } + + return l + strlen(src); +} + +size_t BUF_strlcat(char *dst, const char *src, size_t dst_size) { + size_t l = 0; + for (; dst_size > 0 && *dst; dst_size--, dst++) { + l++; + } + return l + BUF_strlcpy(dst, src, dst_size); +} + +void *BUF_memdup(const void *data, size_t dst_size) { + void *ret; + + if (data == NULL) { + return NULL; + } + + ret = OPENSSL_malloc(dst_size); + if (ret == NULL) { + OPENSSL_PUT_ERROR(BUF, BUF_memdup, ERR_R_MALLOC_FAILURE); + return NULL; + } + + memcpy(ret, data, dst_size); + return ret; +} diff --git a/src/crypto/buf/buf_error.c b/src/crypto/buf/buf_error.c new file mode 100644 index 0000000..fac6011 --- /dev/null +++ b/src/crypto/buf/buf_error.c @@ -0,0 +1,25 @@ +/* Copyright (c) 2014, Google Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ + +#include <openssl/err.h> + +#include <openssl/buf.h> + +const ERR_STRING_DATA BUF_error_string_data[] = { + {ERR_PACK(ERR_LIB_BUF, BUF_F_BUF_MEM_new, 0), "BUF_MEM_new"}, + {ERR_PACK(ERR_LIB_BUF, BUF_F_BUF_memdup, 0), "BUF_memdup"}, + {ERR_PACK(ERR_LIB_BUF, BUF_F_BUF_strndup, 0), "BUF_strndup"}, + {ERR_PACK(ERR_LIB_BUF, BUF_F_buf_mem_grow, 0), "buf_mem_grow"}, + {0, NULL}, +}; |