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freebsd-nq/contrib/ntp/include/ntp_stdlib.h
Cy Schubert 276da39af9 MFV ntp-4.2.8p3 (r284990). 
Approved by:	roberto, delphij
Security:	VuXML: 0d0f3050-1f69-11e5-9ba9-d050996490d0
Security:	http://bugs.ntp.org/show_bug.cgi?id=2853
Security:	https://www.kb.cert.org/vuls/id/668167
Security:	http://support.ntp.org/bin/view/Main/SecurityNotice#June_2015_NTP_Security_Vulnerabi
2015-07-05 15:42:16 +00:00

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/*
* ntp_stdlib.h - Prototypes for NTP lib.
*/
#ifndef NTP_STDLIB_H
#define NTP_STDLIB_H
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include "declcond.h" /* ntpd uses ntpd/declcond.h, others include/ */
#include "l_stdlib.h"
#include "ntp_net.h"
#include "ntp_debug.h"
#include "ntp_malloc.h"
#include "ntp_string.h"
#include "ntp_syslog.h"
#ifdef __GNUC__
#define NTP_PRINTF(fmt, args) __attribute__((__format__(__printf__, fmt, args)))
#else
#define NTP_PRINTF(fmt, args)
#endif
extern int mprintf(const char *, ...) NTP_PRINTF(1, 2);
extern int mfprintf(FILE *, const char *, ...) NTP_PRINTF(2, 3);
extern int mvfprintf(FILE *, const char *, va_list) NTP_PRINTF(2, 0);
extern int mvsnprintf(char *, size_t, const char *, va_list)
NTP_PRINTF(3, 0);
extern int msnprintf(char *, size_t, const char *, ...)
NTP_PRINTF(3, 4);
extern void msyslog(int, const char *, ...) NTP_PRINTF(2, 3);
extern void init_logging (const char *, u_int32, int);
extern int change_logfile (const char *, int);
extern void setup_logfile (const char *);
#ifndef errno_to_str
extern void errno_to_str(int, char *, size_t);
#endif
/*
* When building without OpenSSL, use a few macros of theirs to
* minimize source differences in NTP.
*/
#ifndef OPENSSL
#define NID_md5 4 /* from openssl/objects.h */
/* from openssl/evp.h */
#define EVP_MAX_MD_SIZE 64 /* longest known is SHA512 */
#endif
#define SAVE_ERRNO(stmt) \
{ \
int preserved_errno; \
\
preserved_errno = socket_errno(); \
{ \
stmt \
} \
errno = preserved_errno; \
}
typedef void (*ctrl_c_fn)(void);
/* authkeys.c */
extern void auth_delkeys (void);
extern int auth_havekey (keyid_t);
extern int authdecrypt (keyid_t, u_int32 *, int, int);
extern int authencrypt (keyid_t, u_int32 *, int);
extern int authhavekey (keyid_t);
extern int authistrusted (keyid_t);
extern int authreadkeys (const char *);
extern void authtrust (keyid_t, u_long);
extern int authusekey (keyid_t, int, const u_char *);
/*
* Based on the NTP timestamp, calculate the NTP timestamp of
* the corresponding calendar unit. Use the pivot time to unfold
* the NTP timestamp properly, or the current system time if the
* pivot pointer is NULL.
*/
extern u_int32 calyearstart (u_int32 ntptime, const time_t *pivot);
extern u_int32 calmonthstart (u_int32 ntptime, const time_t *pivot);
extern u_int32 calweekstart (u_int32 ntptime, const time_t *pivot);
extern u_int32 caldaystart (u_int32 ntptime, const time_t *pivot);
extern const char *clockname (int);
extern int clocktime (int, int, int, int, int, u_int32, u_long *, u_int32 *);
extern int ntp_getopt (int, char **, const char *);
extern void init_auth (void);
extern void init_lib (void);
extern struct savekey *auth_findkey (keyid_t);
extern void auth_moremem (int);
extern void auth_prealloc_symkeys(int);
extern int ymd2yd (int, int, int);
/* a_md5encrypt.c */
extern int MD5authdecrypt (int, u_char *, u_int32 *, int, int);
extern int MD5authencrypt (int, u_char *, u_int32 *, int);
extern void MD5auth_setkey (keyid_t, int, const u_char *, size_t);
extern u_int32 addr2refid (sockaddr_u *);
/* emalloc.c */
#ifndef EREALLOC_CALLSITE /* ntp_malloc.h defines */
extern void * ereallocz (void *, size_t, size_t, int);
extern void * oreallocarray (void *optr, size_t nmemb, size_t size);
#define erealloczsite(p, n, o, z, f, l) ereallocz((p), (n), (o), (z))
#define emalloc(n) ereallocz(NULL, (n), 0, FALSE)
#define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE)
#define erealloc(p, c) ereallocz((p), (c), 0, FALSE)
#define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE)
#define ereallocarray(p, n, s) oreallocarray((p), (n), (s))
#define eallocarray(n, s) oreallocarray(NULL, (n), (s))
extern char * estrdup_impl(const char *);
#define estrdup(s) estrdup_impl(s)
#else
extern void * ereallocz (void *, size_t, size_t, int,
const char *, int);
extern void * oreallocarray (void *optr, size_t nmemb, size_t size,
const char *, int);
#define erealloczsite ereallocz
#define emalloc(c) ereallocz(NULL, (c), 0, FALSE, \
__FILE__, __LINE__)
#define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE, \
__FILE__, __LINE__)
#define erealloc(p, c) ereallocz((p), (c), 0, FALSE, \
__FILE__, __LINE__)
#define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE, \
__FILE__, __LINE__)
#define ereallocarray(p, n, s) oreallocarray((p), (n), (s), \
__FILE__, __LINE__)
#define eallocarray(n, s) oreallocarray(NULL, (n), (s), \
__FILE__, __LINE__)
extern char * estrdup_impl(const char *, const char *, int);
#define estrdup(s) estrdup_impl((s), __FILE__, __LINE__)
#endif
extern int atoint (const char *, long *);
extern int atouint (const char *, u_long *);
extern int hextoint (const char *, u_long *);
extern const char * humanlogtime (void);
extern const char * humantime (time_t);
extern char * mfptoa (u_int32, u_int32, short);
extern char * mfptoms (u_int32, u_int32, short);
extern const char * modetoa (size_t);
extern const char * eventstr (int);
extern const char * ceventstr (int);
extern const char * res_match_flags(u_short);
extern const char * res_access_flags(u_short);
#ifdef KERNEL_PLL
extern const char * k_st_flags (u_int32);
#endif
extern char * statustoa (int, int);
extern sockaddr_u * netof (sockaddr_u *);
extern char * numtoa (u_int32);
extern char * numtohost (u_int32);
extern const char * socktoa (const sockaddr_u *);
extern const char * sockporttoa(const sockaddr_u *);
extern u_short sock_hash (const sockaddr_u *);
extern int sockaddr_masktoprefixlen(const sockaddr_u *);
extern const char * socktohost (const sockaddr_u *);
extern int octtoint (const char *, u_long *);
extern u_long ranp2 (int);
extern const char *refnumtoa (sockaddr_u *);
extern const char *refid_str (u_int32, int);
extern int decodenetnum (const char *, sockaddr_u *);
extern const char * FindConfig (const char *);
extern void signal_no_reset (int, RETSIGTYPE (*func)(int));
extern void set_ctrl_c_hook (ctrl_c_fn);
extern void getauthkeys (const char *);
extern void auth_agekeys (void);
extern void rereadkeys (void);
/*
* Variable declarations for libntp.
*/
/* authkeys.c */
extern u_long authkeynotfound; /* keys not found */
extern u_long authkeylookups; /* calls to lookup keys */
extern u_long authnumkeys; /* number of active keys */
extern u_long authkeyexpired; /* key lifetime expirations */
extern u_long authkeyuncached; /* cache misses */
extern u_long authencryptions; /* calls to encrypt */
extern u_long authdecryptions; /* calls to decrypt */
extern int authnumfreekeys;
/*
* The key cache. We cache the last key we looked at here.
*/
extern keyid_t cache_keyid; /* key identifier */
extern int cache_type; /* key type */
extern u_char * cache_secret; /* secret */
extern u_short cache_secretsize; /* secret octets */
extern u_short cache_flags; /* KEY_ bit flags */
/* getopt.c */
extern char * ntp_optarg; /* global argument pointer */
extern int ntp_optind; /* global argv index */
/* lib_strbuf.c */
extern int ipv4_works;
extern int ipv6_works;
/* machines.c */
typedef void (*pset_tod_using)(const char *);
extern pset_tod_using set_tod_using;
/* ssl_init.c */
#ifdef OPENSSL
extern void ssl_init (void);
extern void ssl_check_version (void);
extern int ssl_init_done;
#define INIT_SSL() \
do { \
if (!ssl_init_done) \
ssl_init(); \
} while (0)
#else /* !OPENSSL follows */
#define INIT_SSL() do {} while (0)
#endif
extern int keytype_from_text (const char *, size_t *);
extern const char *keytype_name (int);
extern char * getpass_keytype (int);
/* strl-obsd.c */
#ifndef HAVE_STRLCPY /* + */
/*
* Copy src to string dst of size siz. At most siz-1 characters
* will be copied. Always NUL terminates (unless siz == 0).
* Returns strlen(src); if retval >= siz, truncation occurred.
*/
extern size_t strlcpy(char *dst, const char *src, size_t siz);
#endif
#ifndef HAVE_STRLCAT /* + */
/*
* Appends src to string dst of size siz (unlike strncat, siz is the
* full size of dst, not space left). At most siz-1 characters
* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
* Returns strlen(src) + MIN(siz, strlen(initial dst)).
* If retval >= siz, truncation occurred.
*/
extern size_t strlcat(char *dst, const char *src, size_t siz);
#endif
/* lib/isc/win32/strerror.c
*
* To minimize Windows-specific changes to the rest of the NTP code,
* particularly reference clocks, we hijack calls to strerror() to deal
* with our mixture of error codes from the C runtime (open, write)
* and Windows (sockets, serial ports). This is an ugly hack because
* both use the lowest values differently, but particularly for ntpd,
* it's not a problem.
*/
#ifdef NTP_REDEFINE_STRERROR
#define strerror(e) ntp_strerror(e)
extern char * ntp_strerror (int e);
#endif
/* systime.c */
extern double sys_tick; /* tick size or time to read */
extern double measured_tick; /* non-overridable sys_tick */
extern double sys_fuzz; /* min clock read latency */
extern int trunc_os_clock; /* sys_tick > measured_tick */
/* version.c */
extern const char *Version; /* version declaration */
#endif /* NTP_STDLIB_H */
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