diff options
Diffstat (limited to 'drivers/builtin_openssl/crypto/rand/randfile.c')
| -rw-r--r-- | drivers/builtin_openssl/crypto/rand/randfile.c | 328 |
1 files changed, 0 insertions, 328 deletions
diff --git a/drivers/builtin_openssl/crypto/rand/randfile.c b/drivers/builtin_openssl/crypto/rand/randfile.c deleted file mode 100644 index 7f1428072d..0000000000 --- a/drivers/builtin_openssl/crypto/rand/randfile.c +++ /dev/null @@ -1,328 +0,0 @@ -/* crypto/rand/randfile.c */ -/* 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.] - */ - -/* We need to define this to get macros like S_IFBLK and S_IFCHR */ -#if !defined(OPENSSL_SYS_VXWORKS) -#define _XOPEN_SOURCE 500 -#endif - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "e_os.h" -#include <openssl/crypto.h> -#include <openssl/rand.h> -#include <openssl/buffer.h> - -#ifdef OPENSSL_SYS_VMS -#include <unixio.h> -#endif -#ifndef NO_SYS_TYPES_H -# include <sys/types.h> -#endif -#ifndef OPENSSL_NO_POSIX_IO -# include <sys/stat.h> -#endif - -#ifdef _WIN32 -#define stat _stat -#define chmod _chmod -#define open _open -#define fdopen _fdopen -#endif - -#undef BUFSIZE -#define BUFSIZE 1024 -#define RAND_DATA 1024 - -#ifdef OPENSSL_SYS_VMS -/* This declaration is a nasty hack to get around vms' extension to fopen - * for passing in sharing options being disabled by our /STANDARD=ANSI89 */ -static FILE *(*const vms_fopen)(const char *, const char *, ...) = - (FILE *(*)(const char *, const char *, ...))fopen; -#define VMS_OPEN_ATTRS "shr=get,put,upd,del","ctx=bin,stm","rfm=stm","rat=none","mrs=0" -#endif - -/* #define RFILE ".rnd" - defined in ../../e_os.h */ - -/* Note that these functions are intended for seed files only. - * Entropy devices and EGD sockets are handled in rand_unix.c */ - -int RAND_load_file(const char *file, long bytes) - { - /* If bytes >= 0, read up to 'bytes' bytes. - * if bytes == -1, read complete file. */ - - MS_STATIC unsigned char buf[BUFSIZE]; -#ifndef OPENSSL_NO_POSIX_IO - struct stat sb; -#endif - int i,ret=0,n; - FILE *in; - - if (file == NULL) return(0); - -#ifndef OPENSSL_NO_POSIX_IO -#ifdef PURIFY - /* struct stat can have padding and unused fields that may not be - * initialized in the call to stat(). We need to clear the entire - * structure before calling RAND_add() to avoid complaints from - * applications such as Valgrind. - */ - memset(&sb, 0, sizeof(sb)); -#endif - if (stat(file,&sb) < 0) return(0); - RAND_add(&sb,sizeof(sb),0.0); -#endif - if (bytes == 0) return(ret); - -#ifdef OPENSSL_SYS_VMS - in=vms_fopen(file,"rb",VMS_OPEN_ATTRS); -#else - in=fopen(file,"rb"); -#endif - if (in == NULL) goto err; -#if defined(S_IFBLK) && defined(S_IFCHR) && !defined(OPENSSL_NO_POSIX_IO) - if (sb.st_mode & (S_IFBLK | S_IFCHR)) { - /* this file is a device. we don't want read an infinite number - * of bytes from a random device, nor do we want to use buffered - * I/O because we will waste system entropy. - */ - bytes = (bytes == -1) ? 2048 : bytes; /* ok, is 2048 enough? */ -#ifndef OPENSSL_NO_SETVBUF_IONBF - setvbuf(in, NULL, _IONBF, 0); /* don't do buffered reads */ -#endif /* ndef OPENSSL_NO_SETVBUF_IONBF */ - } -#endif - for (;;) - { - if (bytes > 0) - n = (bytes < BUFSIZE)?(int)bytes:BUFSIZE; - else - n = BUFSIZE; - i=fread(buf,1,n,in); - if (i <= 0) break; -#ifdef PURIFY - RAND_add(buf,i,(double)i); -#else - /* even if n != i, use the full array */ - RAND_add(buf,n,(double)i); -#endif - ret+=i; - if (bytes > 0) - { - bytes-=n; - if (bytes <= 0) break; - } - } - fclose(in); - OPENSSL_cleanse(buf,BUFSIZE); -err: - return(ret); - } - -int RAND_write_file(const char *file) - { - unsigned char buf[BUFSIZE]; - int i,ret=0,rand_err=0; - FILE *out = NULL; - int n; -#ifndef OPENSSL_NO_POSIX_IO - struct stat sb; - - i=stat(file,&sb); - if (i != -1) { -#if defined(S_ISBLK) && defined(S_ISCHR) - if (S_ISBLK(sb.st_mode) || S_ISCHR(sb.st_mode)) { - /* this file is a device. we don't write back to it. - * we "succeed" on the assumption this is some sort - * of random device. Otherwise attempting to write to - * and chmod the device causes problems. - */ - return(1); - } -#endif - } -#endif - -#if defined(O_CREAT) && !defined(OPENSSL_NO_POSIX_IO) && !defined(OPENSSL_SYS_VMS) - { -#ifndef O_BINARY -#define O_BINARY 0 -#endif - /* chmod(..., 0600) is too late to protect the file, - * permissions should be restrictive from the start */ - int fd = open(file, O_WRONLY|O_CREAT|O_BINARY, 0600); - if (fd != -1) - out = fdopen(fd, "wb"); - } -#endif - -#ifdef OPENSSL_SYS_VMS - /* VMS NOTE: Prior versions of this routine created a _new_ - * version of the rand file for each call into this routine, then - * deleted all existing versions named ;-1, and finally renamed - * the current version as ';1'. Under concurrent usage, this - * resulted in an RMS race condition in rename() which could - * orphan files (see vms message help for RMS$_REENT). With the - * fopen() calls below, openssl/VMS now shares the top-level - * version of the rand file. Note that there may still be - * conditions where the top-level rand file is locked. If so, this - * code will then create a new version of the rand file. Without - * the delete and rename code, this can result in ascending file - * versions that stop at version 32767, and this routine will then - * return an error. The remedy for this is to recode the calling - * application to avoid concurrent use of the rand file, or - * synchronize usage at the application level. Also consider - * whether or not you NEED a persistent rand file in a concurrent - * use situation. - */ - - out = vms_fopen(file,"rb+",VMS_OPEN_ATTRS); - if (out == NULL) - out = vms_fopen(file,"wb",VMS_OPEN_ATTRS); -#else - if (out == NULL) - out = fopen(file,"wb"); -#endif - if (out == NULL) goto err; - -#ifndef NO_CHMOD - chmod(file,0600); -#endif - n=RAND_DATA; - for (;;) - { - i=(n > BUFSIZE)?BUFSIZE:n; - n-=BUFSIZE; - if (RAND_bytes(buf,i) <= 0) - rand_err=1; - i=fwrite(buf,1,i,out); - if (i <= 0) - { - ret=0; - break; - } - ret+=i; - if (n <= 0) break; - } - - fclose(out); - OPENSSL_cleanse(buf,BUFSIZE); -err: - return (rand_err ? -1 : ret); - } - -const char *RAND_file_name(char *buf, size_t size) - { - char *s=NULL; -#ifdef __OpenBSD__ - struct stat sb; -#endif - - if (OPENSSL_issetugid() == 0) - s=getenv("RANDFILE"); - if (s != NULL && *s && strlen(s) + 1 < size) - { - if (BUF_strlcpy(buf,s,size) >= size) - return NULL; - } - else - { - if (OPENSSL_issetugid() == 0) - s=getenv("HOME"); -#ifdef DEFAULT_HOME - if (s == NULL) - { - s = DEFAULT_HOME; - } -#endif - if (s && *s && strlen(s)+strlen(RFILE)+2 < size) - { - BUF_strlcpy(buf,s,size); -#ifndef OPENSSL_SYS_VMS - BUF_strlcat(buf,"/",size); -#endif - BUF_strlcat(buf,RFILE,size); - } - else - buf[0] = '\0'; /* no file name */ - } - -#ifdef __OpenBSD__ - /* given that all random loads just fail if the file can't be - * seen on a stat, we stat the file we're returning, if it - * fails, use /dev/arandom instead. this allows the user to - * use their own source for good random data, but defaults - * to something hopefully decent if that isn't available. - */ - - if (!buf[0]) - if (BUF_strlcpy(buf,"/dev/arandom",size) >= size) { - return(NULL); - } - if (stat(buf,&sb) == -1) - if (BUF_strlcpy(buf,"/dev/arandom",size) >= size) { - return(NULL); - } - -#endif - return(buf); - } |