|
- /* 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>
- #pragma warning(push, 3)
- #include <windows.h>
- #pragma warning(pop)
- #endif
-
- #include <openssl/buf.h>
- #include <openssl/err.h>
- #include <openssl/mem.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)
- int bio_fd_should_retry(int i) {
- if (i == -1) {
- return bio_fd_non_fatal_error((int)GetLastError());
- }
- return 0;
- }
- #else
- int bio_fd_should_retry(int i) {
- if (i == -1) {
- return bio_fd_non_fatal_error(errno);
- }
- return 0;
- }
- #endif
-
- 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) {
- close(bio->num);
- }
- bio->init = 0;
- }
- return 1;
- }
-
- static int fd_read(BIO *b, char *out, int outl) {
- int ret = 0;
-
- ret = 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 = 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)lseek(b->num, num, SEEK_SET);
- }
- break;
- case BIO_C_FILE_TELL:
- case BIO_CTRL_INFO:
- ret = 0;
- if (b->init) {
- ret = (long)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 1;
- } else {
- ret = 0;
- }
- 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_puts(BIO *bp, const char *str) {
- return fd_write(bp, str, strlen(str));
- }
-
- 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, fd_puts,
- fd_gets, fd_ctrl, fd_new, fd_free, NULL, };
-
- 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);
- }
|