-/* 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).
+/*
+ * Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
-#include <openssl/rand.h>
+#include <openssl/opensslconf.h>
+#ifdef OPENSSL_NO_EGD
+NON_EMPTY_TRANSLATION_UNIT
+#else
+
+# include <openssl/crypto.h>
+# include <openssl/e_os2.h>
+# include <openssl/rand.h>
-/* Query the EGD <URL: http://www.lothar.com/tech/crypto/>.
+/*
+ * Query an EGD
*/
-#if defined(WIN32) || defined(VMS)
+# if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_VOS) || defined(OPENSSL_SYS_UEFI)
+int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes)
+{
+ return -1;
+}
+
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>
+{
+ return (-1);
+}
-#ifndef offsetof
-# define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
-#endif
+int RAND_egd_bytes(const char *path, int bytes)
+{
+ return (-1);
+}
+
+# else
+
+# include <openssl/opensslconf.h>
+# include OPENSSL_UNISTD
+# include <stddef.h>
+# include <sys/types.h>
+# include <sys/socket.h>
+# ifndef NO_SYS_UN_H
+# ifdef OPENSSL_SYS_VXWORKS
+# include <streams/un.h>
+# else
+# include <sys/un.h>
+# endif
+# else
+struct sockaddr_un {
+ short sun_family; /* AF_UNIX */
+ char sun_path[108]; /* path name (gag) */
+};
+# endif /* NO_SYS_UN_H */
+# include <string.h>
+# include <errno.h>
+
+int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes)
+{
+ FILE *fp = NULL;
+ struct sockaddr_un addr;
+ int mybuffer, ret = -1, i, numbytes, fd;
+ unsigned char tempbuf[255];
+
+ if (bytes > (int)sizeof(tempbuf))
+ return -1;
+
+ /* Make socket. */
+ memset(&addr, 0, sizeof(addr));
+ addr.sun_family = AF_UNIX;
+ if (strlen(path) >= sizeof(addr.sun_path))
+ return (-1);
+ strcpy(addr.sun_path, path);
+ i = offsetof(struct sockaddr_un, sun_path) + strlen(path);
+ fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (fd == -1 || (fp = fdopen(fd, "r+")) == NULL)
+ return (-1);
+
+ /* Try to connect */
+ for ( ; ; ) {
+ if (connect(fd, (struct sockaddr *)&addr, i) == 0)
+ break;
+# ifdef EISCONN
+ if (errno == EISCONN)
+ break;
+# endif
+ switch (errno) {
+# ifdef EINTR
+ case EINTR:
+# endif
+# ifdef EAGAIN
+ case EAGAIN:
+# endif
+# ifdef EINPROGRESS
+ case EINPROGRESS:
+# endif
+# ifdef EALREADY
+ case EALREADY:
+# endif
+ /* No error, try again */
+ break;
+ default:
+ ret = -1;
+ goto err;
+ }
+ }
+
+ /* Make request, see how many bytes we can get back. */
+ tempbuf[0] = 1;
+ tempbuf[1] = bytes;
+ if (fwrite(tempbuf, sizeof(char), 2, fp) != 2 || fflush(fp) == EOF)
+ goto err;
+ if (fread(tempbuf, sizeof(char), 1, fp) != 1 || tempbuf[0] == 0)
+ goto err;
+ numbytes = tempbuf[0];
+
+ /* Which buffer are we using? */
+ mybuffer = buf == NULL;
+ if (mybuffer)
+ buf = tempbuf;
+
+ /* Read bytes. */
+ i = fread(buf, sizeof(char), numbytes, fp);
+ if (i < numbytes)
+ goto err;
+ ret = numbytes;
+ if (mybuffer)
+ RAND_seed(tempbuf, i);
-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, (struct sockaddr *)&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);
- }
+ if (fp != NULL)
+ fclose(fp);
+ return ret;
+}
+
+int RAND_egd_bytes(const char *path, int bytes)
+{
+ int num;
+
+ num = RAND_query_egd_bytes(path, NULL, bytes);
+ if (num < 0)
+ return -1;
+ if (RAND_status() != 1)
+ return -1;
+ return num;
+}
+
+int RAND_egd(const char *path)
+{
+ return (RAND_egd_bytes(path, 255));
+}
+
+# endif
+
#endif
projects / openssl.git / blobdiff