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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /nsprpub/pr/src/md/unix/uxrng.c
parentInitial commit. (diff)
downloadfirefox-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.c147
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() */