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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /nsprpub/pr/src/md/unix/uxrng.c | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'nsprpub/pr/src/md/unix/uxrng.c')
-rw-r--r-- | nsprpub/pr/src/md/unix/uxrng.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/unix/uxrng.c b/nsprpub/pr/src/md/unix/uxrng.c new file mode 100644 index 0000000000..479859000a --- /dev/null +++ b/nsprpub/pr/src/md/unix/uxrng.c @@ -0,0 +1,147 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + + +#include "primpl.h" + +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <sys/time.h> + + +#if defined(SOLARIS) + +static size_t +GetHighResClock(void *buf, size_t maxbytes) +{ + hrtime_t t; + t = gethrtime(); + if (t) { + return _pr_CopyLowBits(buf, maxbytes, &t, sizeof(t)); + } + return 0; +} + +#elif defined(HPUX) + +#ifdef __ia64 +#include <ia64/sys/inline.h> + +static size_t +GetHighResClock(void *buf, size_t maxbytes) +{ + PRUint64 t; + +#ifdef __GNUC__ + __asm__ __volatile__("mov %0 = ar.itc" : "=r" (t)); +#else + t = _Asm_mov_from_ar(_AREG44); +#endif + return _pr_CopyLowBits(buf, maxbytes, &t, sizeof(t)); +} +#else +static size_t +GetHighResClock(void *buf, size_t maxbytes) +{ + extern int ret_cr16(); + int cr16val; + + cr16val = ret_cr16(); + return(_pr_CopyLowBits(buf, maxbytes, &cr16val, sizeof(cr16val))); +} +#endif + +#elif defined(AIX) + +static size_t +GetHighResClock(void *buf, size_t maxbytes) +{ + return 0; +} + +#elif (defined(LINUX) || defined(FREEBSD) || defined(__FreeBSD_kernel__) \ + || defined(NETBSD) || defined(__NetBSD_kernel__) || defined(OPENBSD) \ + || defined(__GNU__)) +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +static int fdDevURandom; +static PRCallOnceType coOpenDevURandom; + +static PRStatus OpenDevURandom( void ) +{ + fdDevURandom = open( "/dev/urandom", O_RDONLY ); + return((-1 == fdDevURandom)? PR_FAILURE : PR_SUCCESS ); +} /* end OpenDevURandom() */ + +static size_t GetDevURandom( void *buf, size_t size ) +{ + int bytesIn; + int rc; + + rc = PR_CallOnce( &coOpenDevURandom, OpenDevURandom ); + if ( PR_FAILURE == rc ) { + _PR_MD_MAP_OPEN_ERROR( errno ); + return(0); + } + + bytesIn = read( fdDevURandom, buf, size ); + if ( -1 == bytesIn ) { + _PR_MD_MAP_READ_ERROR( errno ); + return(0); + } + + return( bytesIn ); +} /* end GetDevURandom() */ + +static size_t +GetHighResClock(void *buf, size_t maxbytes) +{ + return(GetDevURandom( buf, maxbytes )); +} + +#elif defined(SCO) || defined(UNIXWARE) || defined(BSDI) || defined(NTO) \ + || defined(QNX) || defined(DARWIN) || defined(RISCOS) +#include <sys/times.h> + +static size_t +GetHighResClock(void *buf, size_t maxbytes) +{ + int ticks; + struct tms buffer; + + ticks=times(&buffer); + return _pr_CopyLowBits(buf, maxbytes, &ticks, sizeof(ticks)); +} +#else +#error! Platform undefined +#endif /* defined(SOLARIS) */ + +extern PRSize _PR_MD_GetRandomNoise( void *buf, PRSize size ) +{ + struct timeval tv; + int n = 0; + int s; + + n += GetHighResClock(buf, size); + size -= n; + + GETTIMEOFDAY(&tv); + + if ( size > 0 ) { + s = _pr_CopyLowBits((char*)buf+n, size, &tv.tv_usec, sizeof(tv.tv_usec)); + size -= s; + n += s; + } + if ( size > 0 ) { + s = _pr_CopyLowBits((char*)buf+n, size, &tv.tv_sec, sizeof(tv.tv_usec)); + size -= s; + n += s; + } + + return n; +} /* end _PR_MD_GetRandomNoise() */ |