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