1*0Sstevel@tonic-gate /* apps/app_rand.c */
2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3*0Sstevel@tonic-gate * All rights reserved.
4*0Sstevel@tonic-gate *
5*0Sstevel@tonic-gate * This package is an SSL implementation written
6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com).
7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as
10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions
11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA,
12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms
14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15*0Sstevel@tonic-gate *
16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in
17*0Sstevel@tonic-gate * the code are not to be removed.
18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution
19*0Sstevel@tonic-gate * as the author of the parts of the library used.
20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or
21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package.
22*0Sstevel@tonic-gate *
23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without
24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions
25*0Sstevel@tonic-gate * are met:
26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright
27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer.
28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright
29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the
30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution.
31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software
32*0Sstevel@tonic-gate * must display the following acknowledgement:
33*0Sstevel@tonic-gate * "This product includes cryptographic software written by
34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)"
35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library
36*0Sstevel@tonic-gate * being used are not cryptographic related :-).
37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from
38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement:
39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40*0Sstevel@tonic-gate *
41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51*0Sstevel@tonic-gate * SUCH DAMAGE.
52*0Sstevel@tonic-gate *
53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or
54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be
55*0Sstevel@tonic-gate * copied and put under another distribution licence
56*0Sstevel@tonic-gate * [including the GNU Public Licence.]
57*0Sstevel@tonic-gate */
58*0Sstevel@tonic-gate /* ====================================================================
59*0Sstevel@tonic-gate * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
60*0Sstevel@tonic-gate *
61*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without
62*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions
63*0Sstevel@tonic-gate * are met:
64*0Sstevel@tonic-gate *
65*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright
66*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer.
67*0Sstevel@tonic-gate *
68*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright
69*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in
70*0Sstevel@tonic-gate * the documentation and/or other materials provided with the
71*0Sstevel@tonic-gate * distribution.
72*0Sstevel@tonic-gate *
73*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this
74*0Sstevel@tonic-gate * software must display the following acknowledgment:
75*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project
76*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77*0Sstevel@tonic-gate *
78*0Sstevel@tonic-gate * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79*0Sstevel@tonic-gate * endorse or promote products derived from this software without
80*0Sstevel@tonic-gate * prior written permission. For written permission, please contact
81*0Sstevel@tonic-gate * openssl-core@openssl.org.
82*0Sstevel@tonic-gate *
83*0Sstevel@tonic-gate * 5. Products derived from this software may not be called "OpenSSL"
84*0Sstevel@tonic-gate * nor may "OpenSSL" appear in their names without prior written
85*0Sstevel@tonic-gate * permission of the OpenSSL Project.
86*0Sstevel@tonic-gate *
87*0Sstevel@tonic-gate * 6. Redistributions of any form whatsoever must retain the following
88*0Sstevel@tonic-gate * acknowledgment:
89*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project
90*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91*0Sstevel@tonic-gate *
92*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93*0Sstevel@tonic-gate * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95*0Sstevel@tonic-gate * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96*0Sstevel@tonic-gate * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97*0Sstevel@tonic-gate * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98*0Sstevel@tonic-gate * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99*0Sstevel@tonic-gate * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101*0Sstevel@tonic-gate * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102*0Sstevel@tonic-gate * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103*0Sstevel@tonic-gate * OF THE POSSIBILITY OF SUCH DAMAGE.
104*0Sstevel@tonic-gate * ====================================================================
105*0Sstevel@tonic-gate *
106*0Sstevel@tonic-gate * This product includes cryptographic software written by Eric Young
107*0Sstevel@tonic-gate * (eay@cryptsoft.com). This product includes software written by Tim
108*0Sstevel@tonic-gate * Hudson (tjh@cryptsoft.com).
109*0Sstevel@tonic-gate *
110*0Sstevel@tonic-gate */
111*0Sstevel@tonic-gate
112*0Sstevel@tonic-gate #define NON_MAIN
113*0Sstevel@tonic-gate #include "apps.h"
114*0Sstevel@tonic-gate #undef NON_MAIN
115*0Sstevel@tonic-gate #include <openssl/bio.h>
116*0Sstevel@tonic-gate #include <openssl/rand.h>
117*0Sstevel@tonic-gate
118*0Sstevel@tonic-gate
119*0Sstevel@tonic-gate static int seeded = 0;
120*0Sstevel@tonic-gate static int egdsocket = 0;
121*0Sstevel@tonic-gate
app_RAND_load_file(const char * file,BIO * bio_e,int dont_warn)122*0Sstevel@tonic-gate int app_RAND_load_file(const char *file, BIO *bio_e, int dont_warn)
123*0Sstevel@tonic-gate {
124*0Sstevel@tonic-gate int consider_randfile = (file == NULL);
125*0Sstevel@tonic-gate char buffer[200];
126*0Sstevel@tonic-gate
127*0Sstevel@tonic-gate #ifdef OPENSSL_SYS_WINDOWS
128*0Sstevel@tonic-gate BIO_printf(bio_e,"Loading 'screen' into random state -");
129*0Sstevel@tonic-gate BIO_flush(bio_e);
130*0Sstevel@tonic-gate RAND_screen();
131*0Sstevel@tonic-gate BIO_printf(bio_e," done\n");
132*0Sstevel@tonic-gate #endif
133*0Sstevel@tonic-gate
134*0Sstevel@tonic-gate if (file == NULL)
135*0Sstevel@tonic-gate file = RAND_file_name(buffer, sizeof buffer);
136*0Sstevel@tonic-gate else if (RAND_egd(file) > 0)
137*0Sstevel@tonic-gate {
138*0Sstevel@tonic-gate /* we try if the given filename is an EGD socket.
139*0Sstevel@tonic-gate if it is, we don't write anything back to the file. */
140*0Sstevel@tonic-gate egdsocket = 1;
141*0Sstevel@tonic-gate return 1;
142*0Sstevel@tonic-gate }
143*0Sstevel@tonic-gate if (file == NULL || !RAND_load_file(file, -1))
144*0Sstevel@tonic-gate {
145*0Sstevel@tonic-gate if (RAND_status() == 0)
146*0Sstevel@tonic-gate {
147*0Sstevel@tonic-gate if (!dont_warn)
148*0Sstevel@tonic-gate {
149*0Sstevel@tonic-gate BIO_printf(bio_e,"unable to load 'random state'\n");
150*0Sstevel@tonic-gate BIO_printf(bio_e,"This means that the random number generator has not been seeded\n");
151*0Sstevel@tonic-gate BIO_printf(bio_e,"with much random data.\n");
152*0Sstevel@tonic-gate if (consider_randfile) /* explanation does not apply when a file is explicitly named */
153*0Sstevel@tonic-gate {
154*0Sstevel@tonic-gate BIO_printf(bio_e,"Consider setting the RANDFILE environment variable to point at a file that\n");
155*0Sstevel@tonic-gate BIO_printf(bio_e,"'random' data can be kept in (the file will be overwritten).\n");
156*0Sstevel@tonic-gate }
157*0Sstevel@tonic-gate }
158*0Sstevel@tonic-gate return 0;
159*0Sstevel@tonic-gate }
160*0Sstevel@tonic-gate }
161*0Sstevel@tonic-gate seeded = 1;
162*0Sstevel@tonic-gate return 1;
163*0Sstevel@tonic-gate }
164*0Sstevel@tonic-gate
app_RAND_load_files(char * name)165*0Sstevel@tonic-gate long app_RAND_load_files(char *name)
166*0Sstevel@tonic-gate {
167*0Sstevel@tonic-gate char *p,*n;
168*0Sstevel@tonic-gate int last;
169*0Sstevel@tonic-gate long tot=0;
170*0Sstevel@tonic-gate int egd;
171*0Sstevel@tonic-gate
172*0Sstevel@tonic-gate for (;;)
173*0Sstevel@tonic-gate {
174*0Sstevel@tonic-gate last=0;
175*0Sstevel@tonic-gate for (p=name; ((*p != '\0') && (*p != LIST_SEPARATOR_CHAR)); p++);
176*0Sstevel@tonic-gate if (*p == '\0') last=1;
177*0Sstevel@tonic-gate *p='\0';
178*0Sstevel@tonic-gate n=name;
179*0Sstevel@tonic-gate name=p+1;
180*0Sstevel@tonic-gate if (*n == '\0') break;
181*0Sstevel@tonic-gate
182*0Sstevel@tonic-gate egd=RAND_egd(n);
183*0Sstevel@tonic-gate if (egd > 0)
184*0Sstevel@tonic-gate tot+=egd;
185*0Sstevel@tonic-gate else
186*0Sstevel@tonic-gate tot+=RAND_load_file(n,-1);
187*0Sstevel@tonic-gate if (last) break;
188*0Sstevel@tonic-gate }
189*0Sstevel@tonic-gate if (tot > 512)
190*0Sstevel@tonic-gate app_RAND_allow_write_file();
191*0Sstevel@tonic-gate return(tot);
192*0Sstevel@tonic-gate }
193*0Sstevel@tonic-gate
app_RAND_write_file(const char * file,BIO * bio_e)194*0Sstevel@tonic-gate int app_RAND_write_file(const char *file, BIO *bio_e)
195*0Sstevel@tonic-gate {
196*0Sstevel@tonic-gate char buffer[200];
197*0Sstevel@tonic-gate
198*0Sstevel@tonic-gate if (egdsocket || !seeded)
199*0Sstevel@tonic-gate /* If we did not manage to read the seed file,
200*0Sstevel@tonic-gate * we should not write a low-entropy seed file back --
201*0Sstevel@tonic-gate * it would suppress a crucial warning the next time
202*0Sstevel@tonic-gate * we want to use it. */
203*0Sstevel@tonic-gate return 0;
204*0Sstevel@tonic-gate
205*0Sstevel@tonic-gate if (file == NULL)
206*0Sstevel@tonic-gate file = RAND_file_name(buffer, sizeof buffer);
207*0Sstevel@tonic-gate if (file == NULL || !RAND_write_file(file))
208*0Sstevel@tonic-gate {
209*0Sstevel@tonic-gate BIO_printf(bio_e,"unable to write 'random state'\n");
210*0Sstevel@tonic-gate return 0;
211*0Sstevel@tonic-gate }
212*0Sstevel@tonic-gate return 1;
213*0Sstevel@tonic-gate }
214*0Sstevel@tonic-gate
app_RAND_allow_write_file(void)215*0Sstevel@tonic-gate void app_RAND_allow_write_file(void)
216*0Sstevel@tonic-gate {
217*0Sstevel@tonic-gate seeded = 1;
218*0Sstevel@tonic-gate }
219