| /* 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/bio.h> |
| |
| #include <errno.h> |
| #include <string.h> |
| |
| #if !defined(OPENSSL_WINDOWS) |
| #include <unistd.h> |
| #else |
| #include <io.h> |
| OPENSSL_MSVC_PRAGMA(warning(push, 3)) |
| #include <windows.h> |
| OPENSSL_MSVC_PRAGMA(warning(pop)) |
| #endif |
| |
| #include <openssl/buf.h> |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| |
| #include "internal.h" |
| |
| |
| static int bio_fd_non_fatal_error(int err) { |
| if ( |
| #ifdef EWOULDBLOCK |
| err == EWOULDBLOCK || |
| #endif |
| #ifdef WSAEWOULDBLOCK |
| err == WSAEWOULDBLOCK || |
| #endif |
| #ifdef ENOTCONN |
| err == ENOTCONN || |
| #endif |
| #ifdef EINTR |
| err == EINTR || |
| #endif |
| #ifdef EAGAIN |
| err == EAGAIN || |
| #endif |
| #ifdef EPROTO |
| err == EPROTO || |
| #endif |
| #ifdef EINPROGRESS |
| err == EINPROGRESS || |
| #endif |
| #ifdef EALREADY |
| err == EALREADY || |
| #endif |
| 0) { |
| return 1; |
| } |
| return 0; |
| } |
| |
| #if defined(OPENSSL_WINDOWS) |
| #define BORINGSSL_ERRNO (int)GetLastError() |
| #define BORINGSSL_CLOSE _close |
| #define BORINGSSL_LSEEK _lseek |
| #define BORINGSSL_READ _read |
| #define BORINGSSL_WRITE _write |
| #else |
| #define BORINGSSL_ERRNO errno |
| #define BORINGSSL_CLOSE close |
| #define BORINGSSL_LSEEK lseek |
| #define BORINGSSL_READ read |
| #define BORINGSSL_WRITE write |
| #endif |
| |
| int bio_fd_should_retry(int i) { |
| if (i == -1) { |
| return bio_fd_non_fatal_error(BORINGSSL_ERRNO); |
| } |
| return 0; |
| } |
| |
| BIO *BIO_new_fd(int fd, int close_flag) { |
| BIO *ret = BIO_new(BIO_s_fd()); |
| if (ret == NULL) { |
| return NULL; |
| } |
| BIO_set_fd(ret, fd, close_flag); |
| return ret; |
| } |
| |
| static int fd_new(BIO *bio) { |
| // num is used to store the file descriptor. |
| bio->num = -1; |
| return 1; |
| } |
| |
| static int fd_free(BIO *bio) { |
| if (bio == NULL) { |
| return 0; |
| } |
| |
| if (bio->shutdown) { |
| if (bio->init) { |
| BORINGSSL_CLOSE(bio->num); |
| } |
| bio->init = 0; |
| } |
| return 1; |
| } |
| |
| static int fd_read(BIO *b, char *out, int outl) { |
| int ret = 0; |
| |
| ret = BORINGSSL_READ(b->num, out, outl); |
| BIO_clear_retry_flags(b); |
| if (ret <= 0) { |
| if (bio_fd_should_retry(ret)) { |
| BIO_set_retry_read(b); |
| } |
| } |
| |
| return ret; |
| } |
| |
| static int fd_write(BIO *b, const char *in, int inl) { |
| int ret = BORINGSSL_WRITE(b->num, in, inl); |
| BIO_clear_retry_flags(b); |
| if (ret <= 0) { |
| if (bio_fd_should_retry(ret)) { |
| BIO_set_retry_write(b); |
| } |
| } |
| |
| return ret; |
| } |
| |
| static long fd_ctrl(BIO *b, int cmd, long num, void *ptr) { |
| long ret = 1; |
| int *ip; |
| |
| switch (cmd) { |
| case BIO_CTRL_RESET: |
| num = 0; |
| case BIO_C_FILE_SEEK: |
| ret = 0; |
| if (b->init) { |
| ret = (long)BORINGSSL_LSEEK(b->num, num, SEEK_SET); |
| } |
| break; |
| case BIO_C_FILE_TELL: |
| case BIO_CTRL_INFO: |
| ret = 0; |
| if (b->init) { |
| ret = (long)BORINGSSL_LSEEK(b->num, 0, SEEK_CUR); |
| } |
| break; |
| case BIO_C_SET_FD: |
| fd_free(b); |
| b->num = *((int *)ptr); |
| b->shutdown = (int)num; |
| b->init = 1; |
| break; |
| case BIO_C_GET_FD: |
| if (b->init) { |
| ip = (int *)ptr; |
| if (ip != NULL) { |
| *ip = b->num; |
| } |
| return b->num; |
| } else { |
| ret = -1; |
| } |
| break; |
| case BIO_CTRL_GET_CLOSE: |
| ret = b->shutdown; |
| break; |
| case BIO_CTRL_SET_CLOSE: |
| b->shutdown = (int)num; |
| break; |
| case BIO_CTRL_PENDING: |
| case BIO_CTRL_WPENDING: |
| ret = 0; |
| break; |
| case BIO_CTRL_FLUSH: |
| ret = 1; |
| break; |
| default: |
| ret = 0; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static int fd_gets(BIO *bp, char *buf, int size) { |
| char *ptr = buf; |
| char *end = buf + size - 1; |
| |
| if (size <= 0) { |
| return 0; |
| } |
| |
| while (ptr < end && fd_read(bp, ptr, 1) > 0 && ptr[0] != '\n') { |
| ptr++; |
| } |
| |
| ptr[0] = '\0'; |
| |
| return ptr - buf; |
| } |
| |
| static const BIO_METHOD methods_fdp = { |
| BIO_TYPE_FD, "file descriptor", fd_write, fd_read, NULL /* puts */, |
| fd_gets, fd_ctrl, fd_new, fd_free, NULL /* callback_ctrl */, |
| }; |
| |
| const BIO_METHOD *BIO_s_fd(void) { return &methods_fdp; } |
| |
| int BIO_set_fd(BIO *bio, int fd, int close_flag) { |
| return BIO_int_ctrl(bio, BIO_C_SET_FD, close_flag, fd); |
| } |
| |
| int BIO_get_fd(BIO *bio, int *out_fd) { |
| return BIO_ctrl(bio, BIO_C_GET_FD, 0, (char *) out_fd); |
| } |