| /* 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.] */ |
| |
| #if defined(__linux) || defined(__sun) || defined(__hpux) |
| /* Following definition aliases fopen to fopen64 on above mentioned |
| * platforms. This makes it possible to open and sequentially access |
| * files larger than 2GB from 32-bit application. It does not allow to |
| * traverse them beyond 2GB with fseek/ftell, but on the other hand *no* |
| * 32-bit platform permits that, not with fseek/ftell. Not to mention |
| * that breaking 2GB limit for seeking would require surgery to *our* |
| * API. But sequential access suffices for practical cases when you |
| * can run into large files, such as fingerprinting, so we can let API |
| * alone. For reference, the list of 32-bit platforms which allow for |
| * sequential access of large files without extra "magic" comprise *BSD, |
| * Darwin, IRIX... |
| */ |
| #ifndef _FILE_OFFSET_BITS |
| #define _FILE_OFFSET_BITS 64 |
| #endif |
| #endif |
| |
| #include <openssl/bio.h> |
| |
| #include <errno.h> |
| #include <stdio.h> |
| |
| #include <openssl/buf.h> |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| |
| |
| #define BIO_FP_READ 0x02 |
| #define BIO_FP_WRITE 0x04 |
| #define BIO_FP_APPEND 0x08 |
| |
| static FILE *open_file(const char *filename, const char *mode) { |
| #if defined(_WIN32) && defined(CP_UTF8) |
| int sz, len_0 = (int)strlen(filename) + 1; |
| DWORD flags; |
| |
| /* Basically there are three cases to cover: a) filename is pure ASCII |
| * string; b) actual UTF-8 encoded string and c) locale-ized string, i.e. one |
| * containing 8-bit characters that are meaningful in current system locale. |
| * If filename is pure ASCII or real UTF-8 encoded string, |
| * MultiByteToWideChar succeeds and _wfopen works. If filename is locale-ized |
| * string, chances are that MultiByteToWideChar fails reporting |
| * ERROR_NO_UNICODE_TRANSLATION, in which case we fall back to fopen... */ |
| if ((sz = MultiByteToWideChar(CP_UTF8, (flags = MB_ERR_INVALID_CHARS), |
| filename, len_0, NULL, 0)) > 0 || |
| (GetLastError() == ERROR_INVALID_FLAGS && |
| (sz = MultiByteToWideChar(CP_UTF8, (flags = 0), filename, len_0, NULL, |
| 0)) > 0)) { |
| WCHAR wmode[8]; |
| WCHAR *wfilename = _alloca(sz * sizeof(WCHAR)); |
| |
| if (MultiByteToWideChar(CP_UTF8, flags, filename, len_0, wfilename, sz) && |
| MultiByteToWideChar(CP_UTF8, 0, mode, strlen(mode) + 1, wmode, |
| sizeof(wmode) / sizeof(wmode[0])) && |
| (file = _wfopen(wfilename, wmode)) == NULL && |
| (errno == ENOENT || |
| errno == EBADF)) /* UTF-8 decode succeeded, but no file, filename |
| * could still have been locale-ized... */ |
| return fopen(filename, mode); |
| } else if (GetLastError() == ERROR_NO_UNICODE_TRANSLATION) { |
| return fopen(filename, mode); |
| } |
| #else |
| return fopen(filename, mode); |
| #endif |
| } |
| |
| BIO *BIO_new_file(const char *filename, const char *mode) { |
| BIO *ret; |
| FILE *file; |
| |
| file = open_file(filename, mode); |
| if (file == NULL) { |
| OPENSSL_PUT_SYSTEM_ERROR(fopen); |
| |
| ERR_add_error_data(5, "fopen('", filename, "','", mode, "')"); |
| if (errno == ENOENT) { |
| OPENSSL_PUT_ERROR(BIO, BIO_new_file, BIO_R_NO_SUCH_FILE); |
| } else { |
| OPENSSL_PUT_ERROR(BIO, BIO_new_file, BIO_R_SYS_LIB); |
| } |
| return NULL; |
| } |
| |
| ret = BIO_new(BIO_s_file()); |
| if (ret == NULL) { |
| fclose(file); |
| return NULL; |
| } |
| |
| BIO_set_fp(ret, file, BIO_CLOSE); |
| return ret; |
| } |
| |
| BIO *BIO_new_fp(FILE *stream, int close_flag) { |
| BIO *ret = BIO_new(BIO_s_file()); |
| |
| if (ret == NULL) { |
| return NULL; |
| } |
| |
| BIO_set_fp(ret, stream, close_flag); |
| return ret; |
| } |
| |
| static int file_new(BIO *bio) { return 1; } |
| |
| static int file_free(BIO *bio) { |
| if (bio == NULL) { |
| return 0; |
| } |
| |
| if (!bio->shutdown) { |
| return 1; |
| } |
| |
| if (bio->init && bio->ptr != NULL) { |
| fclose(bio->ptr); |
| bio->ptr = NULL; |
| } |
| bio->init = 0; |
| |
| return 1; |
| } |
| |
| static int file_read(BIO *b, char *out, int outl) { |
| int ret = 0; |
| |
| if (!b->init) { |
| return 0; |
| } |
| |
| ret = fread(out, 1, outl, (FILE *)b->ptr); |
| if (ret == 0 && ferror((FILE *)b->ptr)) { |
| OPENSSL_PUT_SYSTEM_ERROR(fread); |
| OPENSSL_PUT_ERROR(BIO, file_read, ERR_R_SYS_LIB); |
| ret = -1; |
| } |
| |
| return ret; |
| } |
| |
| static int file_write(BIO *b, const char *in, int inl) { |
| int ret = 0; |
| |
| if (!b->init) { |
| return 0; |
| } |
| |
| ret = fwrite(in, inl, 1, (FILE *)b->ptr); |
| if (ret > 0) { |
| ret = inl; |
| } |
| return ret; |
| } |
| |
| static long file_ctrl(BIO *b, int cmd, long num, void *ptr) { |
| long ret = 1; |
| FILE *fp = (FILE *)b->ptr; |
| FILE **fpp; |
| char p[4]; |
| |
| switch (cmd) { |
| case BIO_CTRL_RESET: |
| num = 0; |
| case BIO_C_FILE_SEEK: |
| ret = (long)fseek(fp, num, 0); |
| break; |
| case BIO_CTRL_EOF: |
| ret = (long)feof(fp); |
| break; |
| case BIO_C_FILE_TELL: |
| case BIO_CTRL_INFO: |
| ret = ftell(fp); |
| break; |
| case BIO_C_SET_FILE_PTR: |
| file_free(b); |
| b->shutdown = (int)num & BIO_CLOSE; |
| b->ptr = ptr; |
| b->init = 1; |
| break; |
| case BIO_C_SET_FILENAME: |
| file_free(b); |
| b->shutdown = (int)num & BIO_CLOSE; |
| if (num & BIO_FP_APPEND) { |
| if (num & BIO_FP_READ) { |
| BUF_strlcpy(p, "a+", sizeof(p)); |
| } else { |
| BUF_strlcpy(p, "a", sizeof(p)); |
| } |
| } else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE)) { |
| BUF_strlcpy(p, "r+", sizeof(p)); |
| } else if (num & BIO_FP_WRITE) { |
| BUF_strlcpy(p, "w", sizeof(p)); |
| } else if (num & BIO_FP_READ) { |
| BUF_strlcpy(p, "r", sizeof(p)); |
| } else { |
| OPENSSL_PUT_ERROR(BIO, file_ctrl, BIO_R_BAD_FOPEN_MODE); |
| ret = 0; |
| break; |
| } |
| fp = open_file(ptr, p); |
| if (fp == NULL) { |
| OPENSSL_PUT_SYSTEM_ERROR(fopen); |
| ERR_add_error_data(5, "fopen('", ptr, "','", p, "')"); |
| OPENSSL_PUT_ERROR(BIO, file_ctrl, ERR_R_SYS_LIB); |
| ret = 0; |
| break; |
| } |
| b->ptr = fp; |
| b->init = 1; |
| break; |
| case BIO_C_GET_FILE_PTR: |
| /* the ptr parameter is actually a FILE ** in this case. */ |
| if (ptr != NULL) { |
| fpp = (FILE **)ptr; |
| *fpp = (FILE *)b->ptr; |
| } |
| break; |
| case BIO_CTRL_GET_CLOSE: |
| ret = (long)b->shutdown; |
| break; |
| case BIO_CTRL_SET_CLOSE: |
| b->shutdown = (int)num; |
| break; |
| case BIO_CTRL_FLUSH: |
| ret = 0 == fflush((FILE *)b->ptr); |
| break; |
| case BIO_CTRL_WPENDING: |
| case BIO_CTRL_PENDING: |
| default: |
| ret = 0; |
| break; |
| } |
| return ret; |
| } |
| |
| static int file_gets(BIO *bp, char *buf, int size) { |
| int ret = 0; |
| |
| if (size == 0) { |
| return 0; |
| } |
| |
| if (!fgets(buf, size, (FILE *)bp->ptr)) { |
| buf[0] = 0; |
| goto err; |
| } |
| ret = strlen(buf); |
| |
| err: |
| return ret; |
| } |
| |
| static int file_puts(BIO *bp, const char *str) { |
| return file_write(bp, str, strlen(str)); |
| } |
| |
| static const BIO_METHOD methods_filep = { |
| BIO_TYPE_FILE, "FILE pointer", file_write, file_read, file_puts, |
| file_gets, file_ctrl, file_new, file_free, NULL, }; |
| |
| const BIO_METHOD *BIO_s_file(void) { return &methods_filep; } |
| |
| |
| int BIO_get_fp(BIO *bio, FILE **out_file) { |
| return BIO_ctrl(bio, BIO_C_GET_FILE_PTR, 0, (char*) out_file); |
| } |
| |
| int BIO_set_fp(BIO *bio, FILE *file, int close_flag) { |
| return BIO_ctrl(bio, BIO_C_SET_FILE_PTR, close_flag, (char *) file); |
| } |
| |
| int BIO_read_filename(BIO *bio, const char *filename) { |
| return BIO_ctrl(bio, BIO_C_SET_FILENAME, BIO_CLOSE | BIO_FP_READ, |
| (char *)filename); |
| } |
| |
| int BIO_write_filename(BIO *bio, const char *filename) { |
| return BIO_ctrl(bio, BIO_C_SET_FILENAME, BIO_CLOSE | BIO_FP_WRITE, |
| (char *)filename); |
| } |
| |
| int BIO_append_filename(BIO *bio, const char *filename) { |
| return BIO_ctrl(bio, BIO_C_SET_FILENAME, BIO_CLOSE | BIO_FP_APPEND, |
| (char *)filename); |
| } |
| |
| int BIO_rw_filename(BIO *bio, const char *filename) { |
| return BIO_ctrl(bio, BIO_C_SET_FILENAME, |
| BIO_CLOSE | BIO_FP_READ | BIO_FP_WRITE, (char *)filename); |
| } |