2 * Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include <openssl/opensslconf.h>
12 NON_EMPTY_TRANSLATION_UNIT
15 # include <openssl/crypto.h>
16 # include <openssl/e_os2.h>
17 # include <openssl/rand.h>
23 # 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)
24 int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes)
29 int RAND_egd(const char *path)
34 int RAND_egd_bytes(const char *path, int bytes)
41 # include OPENSSL_UNISTD
43 # include <sys/types.h>
44 # include <sys/socket.h>
46 # ifdef OPENSSL_SYS_VXWORKS
47 # include <streams/un.h>
53 short sun_family; /* AF_UNIX */
54 char sun_path[108]; /* path name (gag) */
56 # endif /* NO_SYS_UN_H */
60 int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes)
63 struct sockaddr_un addr;
64 int mybuffer, ret = -1, i, numbytes, fd;
65 unsigned char tempbuf[255];
67 if (bytes > (int)sizeof(tempbuf))
71 memset(&addr, 0, sizeof(addr));
72 addr.sun_family = AF_UNIX;
73 if (strlen(path) >= sizeof(addr.sun_path))
75 strcpy(addr.sun_path, path);
76 i = offsetof(struct sockaddr_un, sun_path) + strlen(path);
77 fd = socket(AF_UNIX, SOCK_STREAM, 0);
78 if (fd == -1 || (fp = fdopen(fd, "r+")) == NULL)
84 if (connect(fd, (struct sockaddr *)&addr, i) == 0)
103 /* No error, try again */
111 /* Make request, see how many bytes we can get back. */
114 if (fwrite(tempbuf, sizeof(char), 2, fp) != 2 || fflush(fp) == EOF)
116 if (fread(tempbuf, sizeof(char), 1, fp) != 1 || tempbuf[0] == 0)
118 numbytes = tempbuf[0];
120 /* Which buffer are we using? */
121 mybuffer = buf == NULL;
126 i = fread(buf, sizeof(char), numbytes, fp);
131 RAND_add(tempbuf, i, i);
139 int RAND_egd_bytes(const char *path, int bytes)
143 num = RAND_query_egd_bytes(path, NULL, bytes);
146 if (RAND_status() != 1)
151 int RAND_egd(const char *path)
153 return RAND_egd_bytes(path, 255);