X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Frand%2Frand_unix.c;h=e9ead3a529688fd2c49a95b6871240d24ac6d70d;hb=7cc684f4f7fbcdc5cf4683eaf025d4f915acbf3c;hp=14837a7a7d8766f15a06284d3e7352276361ae8a;hpb=4bd46774bb73bce491e5556f8e43a5d9d8ba4539;p=oweals%2Fopenssl.git diff --git a/crypto/rand/rand_unix.c b/crypto/rand/rand_unix.c index 14837a7a7d..e9ead3a529 100644 --- a/crypto/rand/rand_unix.c +++ b/crypto/rand/rand_unix.c @@ -56,7 +56,7 @@ * [including the GNU Public Licence.] */ /* ==================================================================== - * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. + * Copyright (c) 1998-2006 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 @@ -116,7 +116,7 @@ #include #include "rand_lcl.h" -#if !(defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE)) +#if !(defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE)) #include #include @@ -125,8 +125,58 @@ #include #include #include +#if defined(OPENSSL_SYS_LINUX) /* should actually be available virtually everywhere */ +# include +#endif +#include +#ifndef FD_SETSIZE +# define FD_SETSIZE (8*sizeof(fd_set)) +#endif -#ifdef __OpenBSD__ +#ifdef __VOS__ +int RAND_poll(void) +{ + unsigned char buf[ENTROPY_NEEDED]; + pid_t curr_pid; + uid_t curr_uid; + static int first=1; + int i; + long rnd = 0; + struct timespec ts; + unsigned seed; + +/* The VOS random() function starts from a static seed so its + initial value is predictable. If random() returns the + initial value, reseed it with dynamic data. The VOS + real-time clock has a granularity of 1 nsec so it should be + reasonably difficult to predict its exact value. Do not + gratuitously reseed the PRNG because other code in this + process or thread may be using it. */ + + if (first) { + first = 0; + rnd = random (); + if (rnd == 1804289383) { + clock_gettime (CLOCK_REALTIME, &ts); + curr_pid = getpid(); + curr_uid = getuid(); + seed = ts.tv_sec ^ ts.tv_nsec ^ curr_pid ^ curr_uid; + srandom (seed); + } + } + + for (i = 0; i < sizeof(buf); i++) { + if (i % 4 == 0) + rnd = random(); + buf[i] = rnd; + rnd >>= 8; + } + RAND_add(buf, sizeof(buf), ENTROPY_NEEDED); + memset(buf, 0, sizeof(buf)); + + return 1; +} +#elif defined __OpenBSD__ int RAND_poll(void) { u_int32_t rnd = 0, i; @@ -143,7 +193,7 @@ int RAND_poll(void) return 1; } -#else +#else /* !defined(__OpenBSD__) */ int RAND_poll(void) { unsigned long l; @@ -155,7 +205,8 @@ int RAND_poll(void) #ifdef DEVRANDOM static const char *randomfiles[] = { DEVRANDOM }; struct stat randomstats[sizeof(randomfiles)/sizeof(randomfiles[0])]; - int fd,i; + int fd; + unsigned int i; #endif #ifdef DEVRANDOM_EGD static const char *egdsockets[] = { DEVRANDOM_EGD, NULL }; @@ -168,7 +219,8 @@ int RAND_poll(void) * have this. Use /dev/urandom if you can as /dev/random may block * if it runs out of random entries. */ - for (i=0; i= 0) { - struct timeval t = { 0, 10*1000 }; /* Spend 10ms on - each file. */ - int r,j; - fd_set fset; + int usec = 10*1000; /* spend 10ms on each file */ + int r; + unsigned int j; struct stat *st=&randomstats[i]; /* Avoid using same input... Used to be O_NOFOLLOW @@ -202,35 +253,84 @@ int RAND_poll(void) do { - FD_ZERO(&fset); - FD_SET(fd, &fset); - r = -1; + int try_read = 0; + +#if defined(OPENSSL_SYS_BEOS_R5) + /* select() is broken in BeOS R5, so we simply + * try to read something and snooze if we couldn't */ + try_read = 1; + +#elif defined(OPENSSL_SYS_LINUX) + /* use poll() */ + struct pollfd pset; + + pset.fd = fd; + pset.events = POLLIN; + pset.revents = 0; - if (select(fd+1,&fset,NULL,NULL,&t) < 0) - t.tv_usec=0; - else if (FD_ISSET(fd, &fset)) + if (poll(&pset, 1, usec / 1000) < 0) + usec = 0; + else + try_read = (pset.revents & POLLIN) != 0; + +#else + /* use select() */ + fd_set fset; + struct timeval t; + + t.tv_sec = 0; + t.tv_usec = usec; + + if (FD_SETSIZE > 0 && (unsigned)fd >= FD_SETSIZE) { - r=read(fd,(unsigned char *)tmpbuf+n, - ENTROPY_NEEDED-n); + /* can't use select, so just try to read once anyway */ + try_read = 1; + } + else + { + FD_ZERO(&fset); + FD_SET(fd, &fset); + + if (select(fd+1,&fset,NULL,NULL,&t) >= 0) + { + usec = t.tv_usec; + if (FD_ISSET(fd, &fset)) + try_read = 1; + } + else + usec = 0; + } +#endif + + if (try_read) + { + r = read(fd,(unsigned char *)tmpbuf+n, ENTROPY_NEEDED-n); if (r > 0) n += r; +#if defined(OPENSSL_SYS_BEOS_R5) + if (r == 0) + snooze(t.tv_usec); +#endif } - - /* Some Unixen will update t, some - won't. For those who won't, give - up here, otherwise, we will do + else + r = -1; + + /* Some Unixen will update t in select(), some + won't. For those who won't, or if we + didn't use select() in the first place, + give up here, otherwise, we will do this once again for the remaining time. */ - if (t.tv_usec == 10*1000) - t.tv_usec=0; + if (usec == 10*1000) + usec = 0; } - while ((r > 0 || (errno == EINTR || errno == EAGAIN)) - && t.tv_usec != 0 && n < ENTROPY_NEEDED); + while ((r > 0 || + (errno == EINTR || errno == EAGAIN)) && usec != 0 && n < ENTROPY_NEEDED); close(fd); } } -#endif +#endif /* defined(DEVRANDOM) */ #ifdef DEVRANDOM_EGD /* Use an EGD socket to read entropy from an EGD or PRNGD entropy @@ -245,7 +345,7 @@ int RAND_poll(void) if (r > 0) n += r; } -#endif +#endif /* defined(DEVRANDOM_EGD) */ #if defined(DEVRANDOM) || defined(DEVRANDOM_EGD) if (n > 0) @@ -264,6 +364,14 @@ int RAND_poll(void) l=time(NULL); RAND_add(&l,sizeof(l),0.0); +#if defined(OPENSSL_SYS_BEOS) + { + system_info sysInfo; + get_system_info(&sysInfo); + RAND_add(&sysInfo,sizeof(sysInfo),0); + } +#endif + #if defined(DEVRANDOM) || defined(DEVRANDOM_EGD) return 1; #else @@ -271,12 +379,13 @@ int RAND_poll(void) #endif } -#endif -#endif +#endif /* defined(__OpenBSD__) */ +#endif /* !(defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE)) */ + #if defined(OPENSSL_SYS_VXWORKS) int RAND_poll(void) -{ - return 0; -} + { + return 0; + } #endif