Adding upstream version 3.4.upstream/3.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 205 insertions, 0 deletions

diff --git a/util.h b/util.h
new file mode 100644
index 0000000..e3d6767
--- /dev/null
+++ b/util.h
@@ -0,0 +1,205 @@
+/*
+  chronyd/chronyc - Programs for keeping computer clocks accurate.
+
+ **********************************************************************
+ * Copyright (C) Richard P. Curnow  1997-2003
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ **********************************************************************
+
+  =======================================================================
+
+  Various utility functions
+  */
+
+#ifndef GOT_UTIL_H
+#define GOT_UTIL_H
+
+#include "sysincl.h"
+
+#include "addressing.h"
+#include "ntp.h"
+#include "candm.h"
+#include "hash.h"
+
+/* Zero a timespec */
+extern void UTI_ZeroTimespec(struct timespec *ts);
+
+/* Check if a timespec is zero */
+extern int UTI_IsZeroTimespec(struct timespec *ts);
+
+/* Convert a timeval into a timespec */
+extern void UTI_TimevalToTimespec(struct timeval *tv, struct timespec *ts);
+
+/* Convert a timespec into a timeval */
+extern void UTI_TimespecToTimeval(struct timespec *ts, struct timeval *tv);
+
+/* Convert a timespec into a floating point number of seconds */
+extern double UTI_TimespecToDouble(struct timespec *ts);
+
+/* Convert a number of seconds expressed in floating point into a
+   timespec */
+extern void UTI_DoubleToTimespec(double d, struct timespec *ts);
+
+/* Normalise a timespec, by adding or subtracting seconds to bring
+   its nanosecond field into range */
+extern void UTI_NormaliseTimespec(struct timespec *ts);
+
+/* Convert a timeval into a floating point number of seconds */
+extern double UTI_TimevalToDouble(struct timeval *tv);
+
+/* Convert a number of seconds expressed in floating point into a
+   timeval */
+extern void UTI_DoubleToTimeval(double a, struct timeval *b);
+
+/* Normalise a struct timeval, by adding or subtracting seconds to bring
+   its microseconds field into range */
+extern void UTI_NormaliseTimeval(struct timeval *x);
+
+/* Returns -1 if a comes earlier than b, 0 if a is the same time as b,
+   and +1 if a comes after b */
+extern int UTI_CompareTimespecs(struct timespec *a, struct timespec *b);
+
+/* Calculate result = a - b */
+extern void UTI_DiffTimespecs(struct timespec *result, struct timespec *a, struct timespec *b);
+
+/* Calculate result = a - b and return as a double */
+extern double UTI_DiffTimespecsToDouble(struct timespec *a, struct timespec *b);
+
+/* Add a double increment to a timespec to get a new one. 'start' is
+   the starting time, 'end' is the result that we return.  This is
+   safe to use if start and end are the same */
+extern void UTI_AddDoubleToTimespec(struct timespec *start, double increment, struct timespec *end);
+
+/* Calculate the average and difference (as a double) of two timespecs */
+extern void UTI_AverageDiffTimespecs(struct timespec *earlier, struct timespec *later, struct timespec *average, double *diff);
+
+/* Calculate result = a - b + c */
+extern void UTI_AddDiffToTimespec(struct timespec *a, struct timespec *b, struct timespec *c, struct timespec *result);
+
+/* Convert a timespec into a temporary string, largely for diagnostic
+   display */
+extern char *UTI_TimespecToString(struct timespec *ts);
+
+/* Convert an NTP timestamp into a temporary string, largely for
+   diagnostic display */
+extern char *UTI_Ntp64ToString(NTP_int64 *ts);
+
+/* Convert ref_id into a temporary string, for diagnostics */
+extern char *UTI_RefidToString(uint32_t ref_id);
+
+/* Convert an IP address to string, for diagnostics */
+extern char *UTI_IPToString(IPAddr *ip);
+
+extern int UTI_StringToIP(const char *addr, IPAddr *ip);
+extern uint32_t UTI_IPToRefid(IPAddr *ip);
+extern uint32_t UTI_IPToHash(IPAddr *ip);
+extern void UTI_IPHostToNetwork(IPAddr *src, IPAddr *dest);
+extern void UTI_IPNetworkToHost(IPAddr *src, IPAddr *dest);
+extern int UTI_CompareIPs(IPAddr *a, IPAddr *b, IPAddr *mask);
+
+extern void UTI_SockaddrToIPAndPort(struct sockaddr *sa, IPAddr *ip, unsigned short *port);
+extern int UTI_IPAndPortToSockaddr(IPAddr *ip, unsigned short port, struct sockaddr *sa);
+extern char *UTI_SockaddrToString(struct sockaddr *sa);
+extern const char *UTI_SockaddrFamilyToString(int family);
+
+extern char *UTI_TimeToLogForm(time_t t);
+
+/* Adjust time following a frequency/offset change */
+extern void UTI_AdjustTimespec(struct timespec *old_ts, struct timespec *when, struct timespec *new_ts, double *delta_time, double dfreq, double doffset);
+
+/* Get zero NTP timestamp with random bits below precision */
+extern void UTI_GetNtp64Fuzz(NTP_int64 *ts, int precision);
+
+extern double UTI_Ntp32ToDouble(NTP_int32 x);
+extern NTP_int32 UTI_DoubleToNtp32(double x);
+
+/* Zero an NTP timestamp */
+extern void UTI_ZeroNtp64(NTP_int64 *ts);
+
+/* Check if an NTP timestamp is zero */
+extern int UTI_IsZeroNtp64(NTP_int64 *ts);
+
+/* Compare two NTP timestamps.  Returns -1 if a is before b, 0 if a is equal to
+   b, and 1 if a is after b. */
+extern int UTI_CompareNtp64(NTP_int64 *a, NTP_int64 *b);
+
+/* Compare an NTP timestamp with up to three other timestamps.  Returns 0
+   if a is not equal to any of b1, b2, and b3, 1 otherwise. */
+extern int UTI_IsEqualAnyNtp64(NTP_int64 *a, NTP_int64 *b1, NTP_int64 *b2, NTP_int64 *b3);
+
+/* Convert a timespec into an NTP timestamp */
+extern void UTI_TimespecToNtp64(struct timespec *src, NTP_int64 *dest, NTP_int64 *fuzz);
+
+/* Convert an NTP timestamp into a timespec */
+extern void UTI_Ntp64ToTimespec(NTP_int64 *src, struct timespec *dest);
+
+/* Check if time + offset is sane */
+extern int UTI_IsTimeOffsetSane(struct timespec *ts, double offset);
+
+/* Get 2 raised to power of a signed integer */
+extern double UTI_Log2ToDouble(int l);
+
+extern void UTI_TimespecNetworkToHost(Timespec *src, struct timespec *dest);
+extern void UTI_TimespecHostToNetwork(struct timespec *src, Timespec *dest);
+
+extern double UTI_FloatNetworkToHost(Float x);
+extern Float UTI_FloatHostToNetwork(double x);
+
+/* Set FD_CLOEXEC on descriptor */
+extern int UTI_FdSetCloexec(int fd);
+
+extern void UTI_SetQuitSignalsHandler(void (*handler)(int), int ignore_sigpipe);
+
+/* Get directory (as an allocated string) for a path */
+extern char *UTI_PathToDir(const char *path);
+
+/* Create a directory with a specified mode (umasked) and set its uid/gid.
+   Create also any parent directories that don't exist with mode 755 and
+   default uid/gid.  Returns 1 if created or already exists (even with
+   different mode/uid/gid), 0 otherwise. */
+extern int UTI_CreateDirAndParents(const char *path, mode_t mode, uid_t uid, gid_t gid);
+
+/* Check if a directory is secure.  It must not have other than the specified
+   permissions and its uid/gid must match the specified values. */
+extern int UTI_CheckDirPermissions(const char *path, mode_t perm, uid_t uid, gid_t gid);
+
+/* Set process user/group IDs and drop supplementary groups */
+extern void UTI_DropRoot(uid_t uid, gid_t gid);
+
+/* Fill buffer with random bytes from /dev/urandom */
+extern void UTI_GetRandomBytesUrandom(void *buf, unsigned int len);
+
+/* Fill buffer with random bytes from /dev/urandom or a faster source if it's
+   available (e.g. arc4random()), which may not necessarily be suitable for
+   generating long-term keys */
+extern void UTI_GetRandomBytes(void *buf, unsigned int len);
+
+/* Macros to get maximum and minimum of two values */
+#ifdef MAX
+#undef MAX
+#endif
+#define MAX(x, y) ((x) > (y) ? (x) : (y))
+#ifdef MIN
+#undef MIN
+#endif
+#define MIN(x, y) ((x) < (y) ? (x) : (y))
+
+/* Macro to clamp a value between two values */
+#define CLAMP(min, x, max) (MAX((min), MIN((x), (max))))
+
+#define SQUARE(x) ((x) * (x))
+
+#endif /* GOT_UTIL_H */