diff options
author | Ulf Möller <ulf@openssl.org> | 2000-02-24 02:51:47 +0000 |
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committer | Ulf Möller <ulf@openssl.org> | 2000-02-24 02:51:47 +0000 |
commit | 4ec2d4d2b3a8cba1fdc656acd6b19d003191d779 (patch) | |
tree | 1356799251ac1dffbd55194f04d26a8d19c0e34e /crypto/rand/rand_egd.c | |
parent | 5921ea3bcf01cb8997ab823cb21a2f4390932a20 (diff) |
Support EGD.
Diffstat (limited to 'crypto/rand/rand_egd.c')
-rw-r--r-- | crypto/rand/rand_egd.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/crypto/rand/rand_egd.c b/crypto/rand/rand_egd.c new file mode 100644 index 0000000000..802d35b5c2 --- /dev/null +++ b/crypto/rand/rand_egd.c @@ -0,0 +1,108 @@ +/* crypto/rand/rand_egd.c */ +/* Written by Ulf Moeller for the OpenSSL project. */ +/* ==================================================================== + * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. + * + * 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 above 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 acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED 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 OpenSSL PROJECT OR + * ITS 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. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <openssl/rand.h> + +/* Query the EGD <URL: http://www.lothar.com/tech/crypto/>. + */ + +#if defined(WIN32) || defined(VMS) +int RAND_egd(const char *path) + { + return(-1); + } +#else +#include <openssl/opensslconf.h> +#include OPENSSL_UNISTD +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/un.h> + +#ifndef offsetof +# define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) +#endif + +int RAND_egd(const char *path) + { + int ret = -1; + struct sockaddr_un addr; + int len, num; + int fd = -1; + unsigned char buf[256]; + + memset(&addr, 0, sizeof(addr)); + addr.sun_family = AF_UNIX; + if (strlen(path) > sizeof(addr.sun_path)) + return (-1); + strcpy(addr.sun_path,path); + len = offsetof(struct sockaddr_un, sun_path) + strlen(path); + fd = socket(AF_UNIX, SOCK_STREAM, 0); + if (fd == -1) return (-1); + if (connect(fd, &addr, len) == -1) goto err; + buf[0] = 1; + buf[1] = 255; + write(fd, buf, 2); + if (read(fd, buf, 1) != 1) goto err; + num = read(fd, buf, 255); + if (num < 1) goto err; + RAND_seed(buf, num); + if (RAND_status() == 1) + ret = num; + err: + if (fd != -1) close(fd); + return(ret); + } +#endif |