OpenCoverage

randfile.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/rand/randfile.c
Source codeSwitch to Preprocessed file
LineSourceCount
1/* $OpenBSD: randfile.c,v 1.42 2015/09/10 15:56:25 jsing Exp $ */-
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)-
3 * All rights reserved.-
4 *-
5 * This package is an SSL implementation written-
6 * by Eric Young (eay@cryptsoft.com).-
7 * The implementation was written so as to conform with Netscapes SSL.-
8 *-
9 * This library is free for commercial and non-commercial use as long as-
10 * the following conditions are aheared to. The following conditions-
11 * apply to all code found in this distribution, be it the RC4, RSA,-
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation-
13 * included with this distribution is covered by the same copyright terms-
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).-
15 *-
16 * Copyright remains Eric Young's, and as such any Copyright notices in-
17 * the code are not to be removed.-
18 * If this package is used in a product, Eric Young should be given attribution-
19 * as the author of the parts of the library used.-
20 * This can be in the form of a textual message at program startup or-
21 * in documentation (online or textual) provided with the package.-
22 *-
23 * Redistribution and use in source and binary forms, with or without-
24 * modification, are permitted provided that the following conditions-
25 * are met:-
26 * 1. Redistributions of source code must retain the copyright-
27 * notice, this list of conditions and the following disclaimer.-
28 * 2. Redistributions in binary form must reproduce the above copyright-
29 * notice, this list of conditions and the following disclaimer in the-
30 * documentation and/or other materials provided with the distribution.-
31 * 3. All advertising materials mentioning features or use of this software-
32 * must display the following acknowledgement:-
33 * "This product includes cryptographic software written by-
34 * Eric Young (eay@cryptsoft.com)"-
35 * The word 'cryptographic' can be left out if the rouines from the library-
36 * being used are not cryptographic related :-).-
37 * 4. If you include any Windows specific code (or a derivative thereof) from-
38 * the apps directory (application code) you must include an acknowledgement:-
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"-
40 *-
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND-
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE-
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE-
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE-
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL-
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS-
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)-
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT-
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY-
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF-
51 * SUCH DAMAGE.-
52 *-
53 * The licence and distribution terms for any publically available version or-
54 * derivative of this code cannot be changed. i.e. this code cannot simply be-
55 * copied and put under another distribution licence-
56 * [including the GNU Public Licence.]-
57 */-
58-
59#include <errno.h>-
60#include <stdio.h>-
61#include <stdlib.h>-
62#include <unistd.h>-
63#include <string.h>-
64-
65#include <openssl/crypto.h>-
66#include <openssl/rand.h>-
67#include <openssl/buffer.h>-
68-
69#include <sys/types.h>-
70#include <sys/stat.h>-
71#include <fcntl.h>-
72-
73#undef BUFSIZE-
74#define BUFSIZE 1024-
75#define RAND_DATA 1024-
76-
77/* Note that these functions should not be used. */-
78-
79int-
80RAND_load_file(const char *file, long bytes)-
81{-
82 /* the "whole" file */-
83 if (bytes == -1)
bytes == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
84 return 123456;
never executed: return 123456;
0
85 else-
86 return bytes;
never executed: return bytes;
0
87}-
88-
89int-
90RAND_write_file(const char *file)-
91{-
92 unsigned char buf[BUFSIZE];-
93 int i, ret = 0;-
94 FILE *out = NULL;-
95 int n, fd;-
96 struct stat sb;-
97-
98 /*-
99 * If this file is a device, avoid opening it.-
100 * XXX TOCTOU-
101 */-
102 if (stat(file, &sb) != -1 &&
stat(file, &sb) != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
103 (S_ISBLK(sb.st_mode) || S_ISCHR(sb.st_mode))) {
(((( sb.st_mod... == (0060000))Description
TRUEnever evaluated
FALSEnever evaluated
(((( sb.st_mod... == (0020000))Description
TRUEnever evaluated
FALSEnever evaluated
0
104 return (1);
never executed: return (1);
0
105 }-
106-
107 fd = open(file, O_WRONLY|O_CREAT, 0600);-
108 if (fd == -1)
fd == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
109 return (1);
never executed: return (1);
0
110 out = fdopen(fd, "wb");-
111-
112 if (out == NULL) {
out == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
113 close(fd);-
114 return (1);
never executed: return (1);
0
115 }-
116-
117 n = RAND_DATA;-
118 for (;;) {-
119 i = (n > BUFSIZE) ? BUFSIZE : n;
(n > 1024)Description
TRUEnever evaluated
FALSEnever evaluated
0
120 n -= BUFSIZE;-
121 arc4random_buf(buf, i);-
122 i = fwrite(buf, 1, i, out);-
123 if (i <= 0) {
i <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
124 ret = 0;-
125 break;
never executed: break;
0
126 }-
127 ret += i;-
128 if (n <= 0)
n <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
129 break;
never executed: break;
0
130 }
never executed: end of block
0
131-
132 fclose(out);-
133 explicit_bzero(buf, BUFSIZE);-
134 return ret;
never executed: return ret;
0
135}-
136-
137const char *-
138RAND_file_name(char * buf, size_t size)-
139{-
140 if (strlcpy(buf, "/dev/urandom", size) >= size)
strlcpy(buf, "... size) >= sizeDescription
TRUEnever evaluated
FALSEnever evaluated
0
141 return (NULL);
never executed: return ( ((void *)0) );
0
142 return buf;
never executed: return buf;
0
143}-
Source codeSwitch to Preprocessed file
Generated by Squish Coco 4.2.2