mirror of
https://github.com/RGBCube/serenity
synced 2025-07-16 06:17:37 +00:00
346 lines
10 KiB
Diff
346 lines
10 KiB
Diff
diff --git a/crypto/rand/rand_unix.c b/crypto/rand/rand_unix.c
|
|
index 097e409..3611588 100644
|
|
--- a/crypto/rand/rand_unix.c
|
|
+++ b/crypto/rand/rand_unix.c
|
|
@@ -109,339 +109,10 @@
|
|
*
|
|
*/
|
|
#include <stdio.h>
|
|
+#include <stdlib.h>
|
|
|
|
-#define USE_SOCKETS
|
|
-#include "e_os.h"
|
|
-#include "cryptlib.h"
|
|
-#include <openssl/rand.h>
|
|
-#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))
|
|
-
|
|
-# include <sys/types.h>
|
|
-# include <sys/time.h>
|
|
-# include <sys/times.h>
|
|
-# include <sys/stat.h>
|
|
-# include <fcntl.h>
|
|
-# include <unistd.h>
|
|
-# include <time.h>
|
|
-# if defined(OPENSSL_SYS_LINUX) /* should actually be available virtually
|
|
- * everywhere */
|
|
-# include <poll.h>
|
|
-# endif
|
|
-# include <limits.h>
|
|
-# ifndef FD_SETSIZE
|
|
-# define FD_SETSIZE (8*sizeof(fd_set))
|
|
-# endif
|
|
-
|
|
-# if defined(OPENSSL_SYS_VOS)
|
|
-
|
|
-/*
|
|
- * The following algorithm repeatedly samples the real-time clock (RTC) to
|
|
- * generate a sequence of unpredictable data. The algorithm relies upon the
|
|
- * uneven execution speed of the code (due to factors such as cache misses,
|
|
- * interrupts, bus activity, and scheduling) and upon the rather large
|
|
- * relative difference between the speed of the clock and the rate at which
|
|
- * it can be read.
|
|
- *
|
|
- * If this code is ported to an environment where execution speed is more
|
|
- * constant or where the RTC ticks at a much slower rate, or the clock can be
|
|
- * read with fewer instructions, it is likely that the results would be far
|
|
- * more predictable.
|
|
- *
|
|
- * As a precaution, we generate 4 times the minimum required amount of seed
|
|
- * data.
|
|
- */
|
|
-
|
|
-int RAND_poll(void)
|
|
-{
|
|
- short int code;
|
|
- gid_t curr_gid;
|
|
- pid_t curr_pid;
|
|
- uid_t curr_uid;
|
|
- int i, k;
|
|
- struct timespec ts;
|
|
- unsigned char v;
|
|
-
|
|
-# ifdef OPENSSL_SYS_VOS_HPPA
|
|
- long duration;
|
|
- extern void s$sleep(long *_duration, short int *_code);
|
|
-# else
|
|
-# ifdef OPENSSL_SYS_VOS_IA32
|
|
- long long duration;
|
|
- extern void s$sleep2(long long *_duration, short int *_code);
|
|
-# else
|
|
-# error "Unsupported Platform."
|
|
-# endif /* OPENSSL_SYS_VOS_IA32 */
|
|
-# endif /* OPENSSL_SYS_VOS_HPPA */
|
|
-
|
|
- /*
|
|
- * Seed with the gid, pid, and uid, to ensure *some* variation between
|
|
- * different processes.
|
|
- */
|
|
-
|
|
- curr_gid = getgid();
|
|
- RAND_add(&curr_gid, sizeof(curr_gid), 1);
|
|
- curr_gid = 0;
|
|
-
|
|
- curr_pid = getpid();
|
|
- RAND_add(&curr_pid, sizeof(curr_pid), 1);
|
|
- curr_pid = 0;
|
|
-
|
|
- curr_uid = getuid();
|
|
- RAND_add(&curr_uid, sizeof(curr_uid), 1);
|
|
- curr_uid = 0;
|
|
-
|
|
- for (i = 0; i < (ENTROPY_NEEDED * 4); i++) {
|
|
- /*
|
|
- * burn some cpu; hope for interrupts, cache collisions, bus
|
|
- * interference, etc.
|
|
- */
|
|
- for (k = 0; k < 99; k++)
|
|
- ts.tv_nsec = random();
|
|
-
|
|
-# ifdef OPENSSL_SYS_VOS_HPPA
|
|
- /* sleep for 1/1024 of a second (976 us). */
|
|
- duration = 1;
|
|
- s$sleep(&duration, &code);
|
|
-# else
|
|
-# ifdef OPENSSL_SYS_VOS_IA32
|
|
- /* sleep for 1/65536 of a second (15 us). */
|
|
- duration = 1;
|
|
- s$sleep2(&duration, &code);
|
|
-# endif /* OPENSSL_SYS_VOS_IA32 */
|
|
-# endif /* OPENSSL_SYS_VOS_HPPA */
|
|
-
|
|
- /* get wall clock time. */
|
|
- clock_gettime(CLOCK_REALTIME, &ts);
|
|
-
|
|
- /* take 8 bits */
|
|
- v = (unsigned char)(ts.tv_nsec % 256);
|
|
- RAND_add(&v, sizeof(v), 1);
|
|
- v = 0;
|
|
- }
|
|
- return 1;
|
|
-}
|
|
-# elif defined __OpenBSD__
|
|
int RAND_poll(void)
|
|
{
|
|
- u_int32_t rnd = 0, i;
|
|
- unsigned char buf[ENTROPY_NEEDED];
|
|
-
|
|
- for (i = 0; i < sizeof(buf); i++) {
|
|
- if (i % 4 == 0)
|
|
- rnd = arc4random();
|
|
- buf[i] = rnd;
|
|
- rnd >>= 8;
|
|
- }
|
|
- RAND_add(buf, sizeof(buf), ENTROPY_NEEDED);
|
|
- OPENSSL_cleanse(buf, sizeof(buf));
|
|
-
|
|
- return 1;
|
|
-}
|
|
-# else /* !defined(__OpenBSD__) */
|
|
-int RAND_poll(void)
|
|
-{
|
|
- unsigned long l;
|
|
- pid_t curr_pid = getpid();
|
|
-# if defined(DEVRANDOM) || defined(DEVRANDOM_EGD)
|
|
- unsigned char tmpbuf[ENTROPY_NEEDED];
|
|
- int n = 0;
|
|
-# endif
|
|
-# ifdef DEVRANDOM
|
|
- static const char *randomfiles[] = { DEVRANDOM };
|
|
- struct stat randomstats[sizeof(randomfiles) / sizeof(randomfiles[0])];
|
|
- int fd;
|
|
- unsigned int i;
|
|
-# endif
|
|
-# ifdef DEVRANDOM_EGD
|
|
- static const char *egdsockets[] = { DEVRANDOM_EGD, NULL };
|
|
- const char **egdsocket = NULL;
|
|
-# endif
|
|
-
|
|
-# ifdef DEVRANDOM
|
|
- memset(randomstats, 0, sizeof(randomstats));
|
|
- /*
|
|
- * Use a random entropy pool device. Linux, FreeBSD and OpenBSD have
|
|
- * this. Use /dev/urandom if you can as /dev/random may block if it runs
|
|
- * out of random entries.
|
|
- */
|
|
-
|
|
- for (i = 0; (i < sizeof(randomfiles) / sizeof(randomfiles[0])) &&
|
|
- (n < ENTROPY_NEEDED); i++) {
|
|
- if ((fd = open(randomfiles[i], O_RDONLY
|
|
-# ifdef O_NONBLOCK
|
|
- | O_NONBLOCK
|
|
-# endif
|
|
-# ifdef O_BINARY
|
|
- | O_BINARY
|
|
-# endif
|
|
-# ifdef O_NOCTTY /* If it happens to be a TTY (god forbid), do
|
|
- * not make it our controlling tty */
|
|
- | O_NOCTTY
|
|
-# endif
|
|
- )) >= 0) {
|
|
- 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 above, but
|
|
- * it's not universally appropriate...
|
|
- */
|
|
- if (fstat(fd, st) != 0) {
|
|
- close(fd);
|
|
- continue;
|
|
- }
|
|
- for (j = 0; j < i; j++) {
|
|
- if (randomstats[j].st_ino == st->st_ino &&
|
|
- randomstats[j].st_dev == st->st_dev)
|
|
- break;
|
|
- }
|
|
- if (j < i) {
|
|
- close(fd);
|
|
- continue;
|
|
- }
|
|
-
|
|
- do {
|
|
- 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 (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) {
|
|
- /*
|
|
- * 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
|
|
- } 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 (usec == 10 * 1000)
|
|
- usec = 0;
|
|
- }
|
|
- while ((r > 0 ||
|
|
- (errno == EINTR || errno == EAGAIN)) && usec != 0
|
|
- && n < ENTROPY_NEEDED);
|
|
-
|
|
- close(fd);
|
|
- }
|
|
- }
|
|
-# endif /* defined(DEVRANDOM) */
|
|
-
|
|
-# ifdef DEVRANDOM_EGD
|
|
- /*
|
|
- * Use an EGD socket to read entropy from an EGD or PRNGD entropy
|
|
- * collecting daemon.
|
|
- */
|
|
-
|
|
- for (egdsocket = egdsockets; *egdsocket && n < ENTROPY_NEEDED;
|
|
- egdsocket++) {
|
|
- int r;
|
|
-
|
|
- r = RAND_query_egd_bytes(*egdsocket, (unsigned char *)tmpbuf + n,
|
|
- ENTROPY_NEEDED - n);
|
|
- if (r > 0)
|
|
- n += r;
|
|
- }
|
|
-# endif /* defined(DEVRANDOM_EGD) */
|
|
-
|
|
-# if defined(DEVRANDOM) || defined(DEVRANDOM_EGD)
|
|
- if (n > 0) {
|
|
- RAND_add(tmpbuf, sizeof(tmpbuf), (double)n);
|
|
- OPENSSL_cleanse(tmpbuf, n);
|
|
- }
|
|
-# endif
|
|
-
|
|
- /* put in some default random data, we need more than just this */
|
|
- l = curr_pid;
|
|
- RAND_add(&l, sizeof(l), 0.0);
|
|
- l = getuid();
|
|
- RAND_add(&l, sizeof(l), 0.0);
|
|
-
|
|
- 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
|
|
- return 0;
|
|
-# endif
|
|
+ return rand();
|
|
}
|
|
|
|
-# 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;
|
|
-}
|
|
-#endif
|