1 /* $NetBSD: ntp_stdlib.h,v 1.13 2016/05/01 23:32:00 christos Exp $ */ 2 3 /* 4 * ntp_stdlib.h - Prototypes for NTP lib. 5 */ 6 #ifndef NTP_STDLIB_H 7 #define NTP_STDLIB_H 8 9 #include <sys/types.h> 10 #ifdef HAVE_SYS_SOCKET_H 11 #include <sys/socket.h> 12 #endif 13 14 #include "declcond.h" /* ntpd uses ntpd/declcond.h, others include/ */ 15 #include "l_stdlib.h" 16 #include "ntp_net.h" 17 #include "ntp_debug.h" 18 #include "ntp_malloc.h" 19 #include "ntp_string.h" 20 #include "ntp_syslog.h" 21 #include "ntp_keyacc.h" 22 23 #ifdef __GNUC__ 24 #define NTP_PRINTF(fmt, args) __attribute__((__format__(__printf__, fmt, args))) 25 #define NTP_SYSLOG(fmt, args) __attribute__((__format__(__syslog__, fmt, args))) 26 #else 27 #define NTP_PRINTF(fmt, args) 28 #define NTP_SYSLOG(fmt, args) 29 #endif 30 31 extern int mprintf(const char *, ...) NTP_SYSLOG(1, 2); 32 extern int mfprintf(FILE *, const char *, ...) NTP_SYSLOG(2, 3); 33 extern int mvfprintf(FILE *, const char *, va_list) NTP_SYSLOG(2, 0); 34 extern int mvsnprintf(char *, size_t, const char *, va_list) 35 NTP_SYSLOG(3, 0); 36 extern int msnprintf(char *, size_t, const char *, ...) 37 NTP_SYSLOG(3, 4); 38 extern void msyslog(int, const char *, ...) NTP_SYSLOG(2, 3); 39 extern void mvsyslog(int, const char *, va_list) NTP_SYSLOG(2, 0); 40 extern void init_logging (const char *, u_int32, int); 41 extern int change_logfile (const char *, int); 42 extern void setup_logfile (const char *); 43 #ifndef errno_to_str 44 extern void errno_to_str(int, char *, size_t); 45 #endif 46 47 /* 48 * When building without OpenSSL, use a few macros of theirs to 49 * minimize source differences in NTP. 50 */ 51 #ifndef OPENSSL 52 #define NID_md5 4 /* from openssl/objects.h */ 53 /* from openssl/evp.h */ 54 #define EVP_MAX_MD_SIZE 64 /* longest known is SHA512 */ 55 #endif 56 57 #define SAVE_ERRNO(stmt) \ 58 { \ 59 int preserved_errno; \ 60 \ 61 preserved_errno = socket_errno(); \ 62 { \ 63 stmt \ 64 } \ 65 errno = preserved_errno; \ 66 } 67 68 typedef void (*ctrl_c_fn)(void); 69 70 /* authkeys.c */ 71 extern void auth_delkeys (void); 72 extern int auth_havekey (keyid_t); 73 extern int authdecrypt (keyid_t, u_int32 *, size_t, size_t); 74 extern size_t authencrypt (keyid_t, u_int32 *, size_t); 75 extern int authhavekey (keyid_t); 76 extern int authistrusted (keyid_t); 77 extern int authistrustedip (keyid_t, sockaddr_u *); 78 extern int authreadkeys (const char *); 79 extern void authtrust (keyid_t, u_long); 80 extern int authusekey (keyid_t, int, const u_char *); 81 82 /* 83 * Based on the NTP timestamp, calculate the NTP timestamp of 84 * the corresponding calendar unit. Use the pivot time to unfold 85 * the NTP timestamp properly, or the current system time if the 86 * pivot pointer is NULL. 87 */ 88 extern u_int32 calyearstart (u_int32 ntptime, const time_t *pivot); 89 extern u_int32 calmonthstart (u_int32 ntptime, const time_t *pivot); 90 extern u_int32 calweekstart (u_int32 ntptime, const time_t *pivot); 91 extern u_int32 caldaystart (u_int32 ntptime, const time_t *pivot); 92 93 extern const char *clockname (int); 94 extern int clocktime (int, int, int, int, int, u_int32, u_long *, u_int32 *); 95 extern int ntp_getopt (int, char **, const char *); 96 extern void init_auth (void); 97 extern void init_lib (void); 98 extern struct savekey *auth_findkey (keyid_t); 99 extern void auth_moremem (int); 100 extern void auth_prealloc_symkeys(int); 101 extern int ymd2yd (int, int, int); 102 103 /* a_md5encrypt.c */ 104 extern int MD5authdecrypt (int, const u_char *, u_int32 *, size_t, size_t); 105 extern size_t MD5authencrypt (int, const u_char *, u_int32 *, size_t); 106 extern void MD5auth_setkey (keyid_t, int, const u_char *, size_t, KeyAccT *c); 107 extern u_int32 addr2refid (sockaddr_u *); 108 109 /* emalloc.c */ 110 #ifndef EREALLOC_CALLSITE /* ntp_malloc.h defines */ 111 extern void * ereallocz (void *, size_t, size_t, int); 112 extern void * oreallocarray (void *optr, size_t nmemb, size_t size); 113 #define erealloczsite(p, n, o, z, f, l) ereallocz((p), (n), (o), (z)) 114 #define emalloc(n) ereallocz(NULL, (n), 0, FALSE) 115 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE) 116 #define erealloc(p, c) ereallocz((p), (c), 0, FALSE) 117 #define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE) 118 #define ereallocarray(p, n, s) oreallocarray((p), (n), (s)) 119 #define eallocarray(n, s) oreallocarray(NULL, (n), (s)) 120 extern char * estrdup_impl(const char *); 121 #define estrdup(s) estrdup_impl(s) 122 #else 123 extern void * ereallocz (void *, size_t, size_t, int, 124 const char *, int); 125 extern void * oreallocarray (void *optr, size_t nmemb, size_t size, 126 const char *, int); 127 #define erealloczsite ereallocz 128 #define emalloc(c) ereallocz(NULL, (c), 0, FALSE, \ 129 __FILE__, __LINE__) 130 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE, \ 131 __FILE__, __LINE__) 132 #define erealloc(p, c) ereallocz((p), (c), 0, FALSE, \ 133 __FILE__, __LINE__) 134 #define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE, \ 135 __FILE__, __LINE__) 136 #define ereallocarray(p, n, s) oreallocarray((p), (n), (s), \ 137 __FILE__, __LINE__) 138 #define eallocarray(n, s) oreallocarray(NULL, (n), (s), \ 139 __FILE__, __LINE__) 140 extern char * estrdup_impl(const char *, const char *, int); 141 #define estrdup(s) estrdup_impl((s), __FILE__, __LINE__) 142 #endif 143 144 145 extern int atoint (const char *, long *); 146 extern int atouint (const char *, u_long *); 147 extern int hextoint (const char *, u_long *); 148 extern const char * humanlogtime (void); 149 extern const char * humantime (time_t); 150 extern int is_ip_address (const char *, u_short, sockaddr_u *); 151 extern char * mfptoa (u_int32, u_int32, short); 152 extern char * mfptoms (u_int32, u_int32, short); 153 extern const char * modetoa (size_t); 154 extern const char * eventstr (int); 155 extern const char * ceventstr (int); 156 extern const char * res_match_flags(u_short); 157 extern const char * res_access_flags(u_short); 158 #ifdef KERNEL_PLL 159 extern const char * k_st_flags (u_int32); 160 #endif 161 extern char * statustoa (int, int); 162 extern sockaddr_u * netof (sockaddr_u *); 163 extern char * numtoa (u_int32); 164 extern char * numtohost (u_int32); 165 extern const char * socktoa (const sockaddr_u *); 166 extern const char * sockporttoa(const sockaddr_u *); 167 extern u_short sock_hash (const sockaddr_u *); 168 extern int sockaddr_masktoprefixlen(const sockaddr_u *); 169 extern const char * socktohost (const sockaddr_u *); 170 extern int octtoint (const char *, u_long *); 171 extern u_long ranp2 (int); 172 extern const char *refnumtoa (sockaddr_u *); 173 extern const char *refid_str (u_int32, int); 174 175 extern int decodenetnum (const char *, sockaddr_u *); 176 177 extern const char * FindConfig (const char *); 178 179 extern void signal_no_reset (int, RETSIGTYPE (*func)(int)); 180 extern void set_ctrl_c_hook (ctrl_c_fn); 181 182 extern void getauthkeys (const char *); 183 extern void auth_agekeys (void); 184 extern void rereadkeys (void); 185 186 /* 187 * Variable declarations for libntp. 188 */ 189 190 /* authkeys.c */ 191 extern u_long authkeynotfound; /* keys not found */ 192 extern u_long authkeylookups; /* calls to lookup keys */ 193 extern u_long authnumkeys; /* number of active keys */ 194 extern u_long authkeyexpired; /* key lifetime expirations */ 195 extern u_long authkeyuncached; /* cache misses */ 196 extern u_long authencryptions; /* calls to encrypt */ 197 extern u_long authdecryptions; /* calls to decrypt */ 198 199 extern int authnumfreekeys; 200 201 /* 202 * The key cache. We cache the last key we looked at here. 203 */ 204 extern keyid_t cache_keyid; /* key identifier */ 205 extern int cache_type; /* key type */ 206 extern u_char * cache_secret; /* secret */ 207 extern size_t cache_secretsize; /* secret octets */ 208 extern u_short cache_flags; /* KEY_ bit flags */ 209 210 /* getopt.c */ 211 extern char * ntp_optarg; /* global argument pointer */ 212 extern int ntp_optind; /* global argv index */ 213 214 /* lib_strbuf.c */ 215 extern int ipv4_works; 216 extern int ipv6_works; 217 218 /* machines.c */ 219 typedef void (*pset_tod_using)(const char *); 220 extern pset_tod_using set_tod_using; 221 222 /* ssl_init.c */ 223 #ifdef OPENSSL 224 extern void ssl_init (void); 225 extern void ssl_check_version (void); 226 extern int ssl_init_done; 227 #define INIT_SSL() \ 228 do { \ 229 if (!ssl_init_done) \ 230 ssl_init(); \ 231 } while (0) 232 #else /* !OPENSSL follows */ 233 #define INIT_SSL() do {} while (0) 234 #endif 235 extern int keytype_from_text (const char *, size_t *); 236 extern const char *keytype_name (int); 237 extern char * getpass_keytype (int); 238 239 /* strl-obsd.c */ 240 #ifndef HAVE_STRLCPY /* + */ 241 /* 242 * Copy src to string dst of size siz. At most siz-1 characters 243 * will be copied. Always NUL terminates (unless siz == 0). 244 * Returns strlen(src); if retval >= siz, truncation occurred. 245 */ 246 extern size_t strlcpy(char *dst, const char *src, size_t siz); 247 #endif 248 #ifndef HAVE_STRLCAT /* + */ 249 /* 250 * Appends src to string dst of size siz (unlike strncat, siz is the 251 * full size of dst, not space left). At most siz-1 characters 252 * will be copied. Always NUL terminates (unless siz <= strlen(dst)). 253 * Returns strlen(src) + MIN(siz, strlen(initial dst)). 254 * If retval >= siz, truncation occurred. 255 */ 256 extern size_t strlcat(char *dst, const char *src, size_t siz); 257 #endif 258 259 260 261 /* lib/isc/win32/strerror.c 262 * 263 * To minimize Windows-specific changes to the rest of the NTP code, 264 * particularly reference clocks, we hijack calls to strerror() to deal 265 * with our mixture of error codes from the C runtime (open, write) 266 * and Windows (sockets, serial ports). This is an ugly hack because 267 * both use the lowest values differently, but particularly for ntpd, 268 * it's not a problem. 269 */ 270 #ifdef NTP_REDEFINE_STRERROR 271 #define strerror(e) ntp_strerror(e) 272 extern char * ntp_strerror (int e); 273 #endif 274 275 /* systime.c */ 276 extern double sys_tick; /* tick size or time to read */ 277 extern double measured_tick; /* non-overridable sys_tick */ 278 extern double sys_fuzz; /* min clock read latency */ 279 extern int trunc_os_clock; /* sys_tick > measured_tick */ 280 281 /* version.c */ 282 extern const char *Version; /* version declaration */ 283 284 #endif /* NTP_STDLIB_H */ 285