2 * ntp_stdlib.h - Prototypes for NTP lib.
8 #ifdef HAVE_SYS_SOCKET_H
9 #include <sys/socket.h>
12 #include "declcond.h" /* ntpd uses ntpd/declcond.h, others include/ */
15 #include "ntp_debug.h"
16 #include "ntp_malloc.h"
17 #include "ntp_string.h"
18 #include "ntp_syslog.h"
21 #define NTP_PRINTF(fmt, args) __attribute__((__format__(__printf__, fmt, args)))
23 #define NTP_PRINTF(fmt, args)
26 extern int mprintf(const char *, ...) NTP_PRINTF(1, 2);
27 extern int mfprintf(FILE *, const char *, ...) NTP_PRINTF(2, 3);
28 extern int mvfprintf(FILE *, const char *, va_list) NTP_PRINTF(2, 0);
29 extern int mvsnprintf(char *, size_t, const char *, va_list)
31 extern int msnprintf(char *, size_t, const char *, ...)
33 extern void msyslog(int, const char *, ...) NTP_PRINTF(2, 3);
34 extern void init_logging (const char *, u_int32, int);
35 extern int change_logfile (const char *, int);
36 extern void setup_logfile (const char *);
38 extern void errno_to_str(int, char *, size_t);
42 * When building without OpenSSL, use a few macros of theirs to
43 * minimize source differences in NTP.
46 #define NID_md5 4 /* from openssl/objects.h */
47 /* from openssl/evp.h */
48 #define EVP_MAX_MD_SIZE 64 /* longest known is SHA512 */
51 #define SAVE_ERRNO(stmt) \
53 int preserved_errno; \
55 preserved_errno = socket_errno(); \
59 errno = preserved_errno; \
62 typedef void (*ctrl_c_fn)(void);
65 extern void auth_delkeys (void);
66 extern int auth_havekey (keyid_t);
67 extern int authdecrypt (keyid_t, u_int32 *, int, int);
68 extern int authencrypt (keyid_t, u_int32 *, int);
69 extern int authhavekey (keyid_t);
70 extern int authistrusted (keyid_t);
71 extern int authreadkeys (const char *);
72 extern void authtrust (keyid_t, u_long);
73 extern int authusekey (keyid_t, int, const u_char *);
76 * Based on the NTP timestamp, calculate the NTP timestamp of
77 * the corresponding calendar unit. Use the pivot time to unfold
78 * the NTP timestamp properly, or the current system time if the
79 * pivot pointer is NULL.
81 extern u_int32 calyearstart (u_int32 ntptime, const time_t *pivot);
82 extern u_int32 calmonthstart (u_int32 ntptime, const time_t *pivot);
83 extern u_int32 calweekstart (u_int32 ntptime, const time_t *pivot);
84 extern u_int32 caldaystart (u_int32 ntptime, const time_t *pivot);
86 extern const char *clockname (int);
87 extern int clocktime (int, int, int, int, int, u_int32, u_long *, u_int32 *);
88 extern int ntp_getopt (int, char **, const char *);
89 extern void init_auth (void);
90 extern void init_lib (void);
91 extern struct savekey *auth_findkey (keyid_t);
92 extern void auth_moremem (int);
93 extern void auth_prealloc_symkeys(int);
94 extern int ymd2yd (int, int, int);
97 extern int MD5authdecrypt (int, u_char *, u_int32 *, int, int);
98 extern int MD5authencrypt (int, u_char *, u_int32 *, int);
99 extern void MD5auth_setkey (keyid_t, int, const u_char *, size_t);
100 extern u_int32 addr2refid (sockaddr_u *);
103 #ifndef EREALLOC_CALLSITE /* ntp_malloc.h defines */
104 extern void * ereallocz (void *, size_t, size_t, int);
105 #define erealloczsite(p, n, o, z, f, l) ereallocz(p, n, o, (z))
106 #define emalloc(n) ereallocz(NULL, n, 0, FALSE)
107 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE)
108 #define erealloc(p, c) ereallocz(p, (c), 0, FALSE)
109 #define erealloc_zero(p, n, o) ereallocz(p, n, (o), TRUE)
110 extern char * estrdup_impl (const char *);
111 #define estrdup(s) estrdup_impl(s)
113 extern void * ereallocz (void *, size_t, size_t, int,
115 #define erealloczsite ereallocz
116 #define emalloc(c) ereallocz(NULL, (c), 0, FALSE, \
118 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE, \
120 #define erealloc(p, c) ereallocz(p, (c), 0, FALSE, \
122 #define erealloc_zero(p, n, o) ereallocz(p, n, (o), TRUE, \
124 extern char * estrdup_impl (const char *, const char *, int);
125 #define estrdup(s) estrdup_impl((s), __FILE__, __LINE__)
129 extern int atoint (const char *, long *);
130 extern int atouint (const char *, u_long *);
131 extern int hextoint (const char *, u_long *);
132 extern const char * humanlogtime (void);
133 extern const char * humantime (time_t);
134 extern char * mfptoa (u_int32, u_int32, short);
135 extern char * mfptoms (u_int32, u_int32, short);
136 extern const char * modetoa (size_t);
137 extern const char * eventstr (int);
138 extern const char * ceventstr (int);
139 extern const char * res_match_flags(u_short);
140 extern const char * res_access_flags(u_short);
142 extern const char * k_st_flags (u_int32);
144 extern char * statustoa (int, int);
145 extern sockaddr_u * netof (sockaddr_u *);
146 extern char * numtoa (u_int32);
147 extern char * numtohost (u_int32);
148 extern const char * socktoa (const sockaddr_u *);
149 extern const char * sockporttoa(const sockaddr_u *);
150 extern u_short sock_hash (const sockaddr_u *);
151 extern int sockaddr_masktoprefixlen(const sockaddr_u *);
152 extern const char * socktohost (const sockaddr_u *);
153 extern int octtoint (const char *, u_long *);
154 extern u_long ranp2 (int);
155 extern const char *refnumtoa (sockaddr_u *);
156 extern const char *refid_str (u_int32, int);
158 extern int decodenetnum (const char *, sockaddr_u *);
160 extern const char * FindConfig (const char *);
162 extern void signal_no_reset (int, RETSIGTYPE (*func)(int));
163 extern void set_ctrl_c_hook (ctrl_c_fn);
165 extern void getauthkeys (const char *);
166 extern void auth_agekeys (void);
167 extern void rereadkeys (void);
170 * Variable declarations for libntp.
174 extern u_long authkeynotfound; /* keys not found */
175 extern u_long authkeylookups; /* calls to lookup keys */
176 extern u_long authnumkeys; /* number of active keys */
177 extern u_long authkeyexpired; /* key lifetime expirations */
178 extern u_long authkeyuncached; /* cache misses */
179 extern u_long authencryptions; /* calls to encrypt */
180 extern u_long authdecryptions; /* calls to decrypt */
182 extern int authnumfreekeys;
185 * The key cache. We cache the last key we looked at here.
187 extern keyid_t cache_keyid; /* key identifier */
188 extern int cache_type; /* key type */
189 extern u_char * cache_secret; /* secret */
190 extern u_short cache_secretsize; /* secret octets */
191 extern u_short cache_flags; /* KEY_ bit flags */
194 extern char * ntp_optarg; /* global argument pointer */
195 extern int ntp_optind; /* global argv index */
198 extern int ipv4_works;
199 extern int ipv6_works;
202 typedef void (*pset_tod_using)(const char *);
203 extern pset_tod_using set_tod_using;
207 extern void ssl_init (void);
208 extern void ssl_check_version (void);
209 extern int ssl_init_done;
212 if (!ssl_init_done) \
215 #else /* !OPENSSL follows */
216 #define INIT_SSL() do {} while (0)
218 extern int keytype_from_text (const char *, size_t *);
219 extern const char *keytype_name (int);
220 extern char * getpass_keytype (int);
223 #ifndef HAVE_STRLCPY /* + */
225 * Copy src to string dst of size siz. At most siz-1 characters
226 * will be copied. Always NUL terminates (unless siz == 0).
227 * Returns strlen(src); if retval >= siz, truncation occurred.
229 extern size_t strlcpy(char *dst, const char *src, size_t siz);
231 #ifndef HAVE_STRLCAT /* + */
233 * Appends src to string dst of size siz (unlike strncat, siz is the
234 * full size of dst, not space left). At most siz-1 characters
235 * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
236 * Returns strlen(src) + MIN(siz, strlen(initial dst)).
237 * If retval >= siz, truncation occurred.
239 extern size_t strlcat(char *dst, const char *src, size_t siz);
244 /* lib/isc/win32/strerror.c
246 * To minimize Windows-specific changes to the rest of the NTP code,
247 * particularly reference clocks, we hijack calls to strerror() to deal
248 * with our mixture of error codes from the C runtime (open, write)
249 * and Windows (sockets, serial ports). This is an ugly hack because
250 * both use the lowest values differently, but particularly for ntpd,
251 * it's not a problem.
253 #ifdef NTP_REDEFINE_STRERROR
254 #define strerror(e) ntp_strerror(e)
255 extern char * ntp_strerror (int e);
259 extern double sys_tick; /* tick size or time to read */
260 extern double measured_tick; /* non-overridable sys_tick */
261 extern double sys_fuzz; /* min clock read latency */
262 extern int trunc_os_clock; /* sys_tick > measured_tick */
265 extern const char *Version; /* version declaration */
267 #endif /* NTP_STDLIB_H */