1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/rand/rand_egd.c */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Written by Ulf Moeller and Lutz Jaenicke for the OpenSSL project. */ 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* ==================================================================== 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the above copyright 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the documentation and/or other materials provided with the 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * distribution. 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * software must display the following acknowledgment: 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software developed by the OpenSSL Project 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * endorse or promote products derived from this software without 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * prior written permission. For written permission, please contact 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * openssl-core@openssl.org. 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 5. Products derived from this software may not be called "OpenSSL" 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * nor may "OpenSSL" appear in their names without prior written 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * permission of the OpenSSL Project. 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 6. Redistributions of any form whatsoever must retain the following 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * acknowledgment: 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software developed by the OpenSSL Project 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OF THE POSSIBILITY OF SUCH DAMAGE. 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ==================================================================== 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This product includes cryptographic software written by Eric Young 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * (eay@cryptsoft.com). This product includes software written by Tim 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Hudson (tjh@cryptsoft.com). 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/e_os2.h> 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/rand.h> 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/buffer.h> 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Query the EGD <URL: http://www.lothar.com/tech/crypto/>. 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This module supplies three routines: 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * RAND_query_egd_bytes(path, buf, bytes) 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * will actually query "bytes" bytes of entropy form the egd-socket located 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * at path and will write them to buf (if supplied) or will directly feed 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * it to RAND_seed() if buf==NULL. 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The number of bytes is not limited by the maximum chunk size of EGD, 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * which is 255 bytes. If more than 255 bytes are wanted, several chunks 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * of entropy bytes are requested. The connection is left open until the 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * query is competed. 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * RAND_query_egd_bytes() returns with 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * -1 if an error occured during connection or communication. 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * num the number of bytes read from the EGD socket. This number is either 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the number of bytes requested or smaller, if the EGD pool is 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * drained and the daemon signals that the pool is empty. 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This routine does not touch any RAND_status(). This is necessary, since 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * PRNG functions may call it during initialization. 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * RAND_egd_bytes(path, bytes) will query "bytes" bytes and have them 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * used to seed the PRNG. 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * RAND_egd_bytes() is a wrapper for RAND_query_egd_bytes() with buf=NULL. 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Unlike RAND_query_egd_bytes(), RAND_status() is used to test the 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * seed status so that the return value can reflect the seed state: 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * -1 if an error occured during connection or communication _or_ 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * if the PRNG has still not received the required seeding. 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * num the number of bytes read from the EGD socket. This number is either 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the number of bytes requested or smaller, if the EGD pool is 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * drained and the daemon signals that the pool is empty. 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * RAND_egd(path) will query 255 bytes and use the bytes retreived to seed 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the PRNG. 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * RAND_egd() is a wrapper for RAND_egd_bytes() with numbytes=255. 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 98221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_VOS) || defined(OPENSSL_SYS_BEOS) 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes) 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(-1); 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint RAND_egd(const char *path) 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(-1); 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint RAND_egd_bytes(const char *path,int bytes) 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(-1); 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#else 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/opensslconf.h> 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include OPENSSL_UNISTD 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <sys/types.h> 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <sys/socket.h> 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef NO_SYS_UN_H 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# ifdef OPENSSL_SYS_VXWORKS 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# include <streams/un.h> 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# else 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# include <sys/un.h> 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# endif 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#else 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstruct sockaddr_un { 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project short sun_family; /* AF_UNIX */ 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project char sun_path[108]; /* path name (gag) */ 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project}; 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif /* NO_SYS_UN_H */ 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <string.h> 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <errno.h> 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef offsetof 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes) 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret = 0; 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project struct sockaddr_un addr; 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int len, num, numbytes; 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int fd = -1; 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int success; 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char egdbuf[2], tempbuf[255], *retrievebuf; 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memset(&addr, 0, sizeof(addr)); 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project addr.sun_family = AF_UNIX; 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (strlen(path) >= sizeof(addr.sun_path)) 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return (-1); 149656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BUF_strlcpy(addr.sun_path,path,sizeof addr.sun_path); 150656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project len = offsetof(struct sockaddr_un, sun_path) + strlen(path); 151656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fd = socket(AF_UNIX, SOCK_STREAM, 0); 152656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (fd == -1) return (-1); 153656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project success = 0; 154656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project while (!success) 155656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 156656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (connect(fd, (struct sockaddr *)&addr, len) == 0) 157656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project success = 1; 158656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 159656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 160656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project switch (errno) 161656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 162656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EINTR 163656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EINTR: 164656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 165656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EAGAIN 166656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EAGAIN: 167656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 168656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EINPROGRESS 169656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EINPROGRESS: 170656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 171656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EALREADY 172656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EALREADY: 173656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 174656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* No error, try again */ 175656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 176656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EISCONN 177656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EISCONN: 178656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project success = 1; 179656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 180656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 181656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project default: 182656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; /* failure */ 183656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 184656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 185656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 186656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 187656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project while(bytes > 0) 188656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 189656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project egdbuf[0] = 1; 190656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project egdbuf[1] = bytes < 255 ? bytes : 255; 191656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project numbytes = 0; 192656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project while (numbytes != 2) 193656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 194656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project num = write(fd, egdbuf + numbytes, 2 - numbytes); 195656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (num >= 0) 196656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project numbytes += num; 197656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 198656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 199656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project switch (errno) 200656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 201656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EINTR 202656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EINTR: 203656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 204656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EAGAIN 205656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EAGAIN: 206656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 207656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* No error, try again */ 208656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 209656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project default: 210656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = -1; 211656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; /* failure */ 212656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 213656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 214656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 215656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project numbytes = 0; 216656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project while (numbytes != 1) 217656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 218656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project num = read(fd, egdbuf, 1); 219656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (num == 0) 220656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; /* descriptor closed */ 221656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else if (num > 0) 222656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project numbytes += num; 223656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 224656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 225656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project switch (errno) 226656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 227656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EINTR 228656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EINTR: 229656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 230656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EAGAIN 231656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EAGAIN: 232656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 233656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* No error, try again */ 234656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 235656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project default: 236656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = -1; 237656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; /* failure */ 238656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 239656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 240656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 241656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(egdbuf[0] == 0) 242656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 243656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (buf) 244656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project retrievebuf = buf + ret; 245656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 246656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project retrievebuf = tempbuf; 247656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project numbytes = 0; 248656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project while (numbytes != egdbuf[0]) 249656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 250656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project num = read(fd, retrievebuf + numbytes, egdbuf[0] - numbytes); 251656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (num == 0) 252656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; /* descriptor closed */ 253656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else if (num > 0) 254656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project numbytes += num; 255656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 256656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 257656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project switch (errno) 258656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 259656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EINTR 260656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EINTR: 261656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 262656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef EAGAIN 263656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case EAGAIN: 264656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 265656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* No error, try again */ 266656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 267656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project default: 268656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = -1; 269656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; /* failure */ 270656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 271656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 272656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 273656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret += egdbuf[0]; 274656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bytes -= egdbuf[0]; 275656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (!buf) 276656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project RAND_seed(tempbuf, egdbuf[0]); 277656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 278656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project err: 279656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (fd != -1) close(fd); 280656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 281656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 282656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 283656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 284656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint RAND_egd_bytes(const char *path, int bytes) 285656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 286656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int num, ret = 0; 287656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 288656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project num = RAND_query_egd_bytes(path, NULL, bytes); 289656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (num < 1) goto err; 290656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (RAND_status() == 1) 291656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = num; 292656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project err: 293656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 294656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 295656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 296656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 297656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint RAND_egd(const char *path) 298656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 299656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return (RAND_egd_bytes(path, 255)); 300656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 301656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 302656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 303656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 304