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 #include "ntp_keyacc.h" 20 21 #ifdef __GNUC__ 22 #define NTP_PRINTF(fmt, args) __attribute__((__format__(__printf__, fmt, args))) 23 #else 24 #define NTP_PRINTF(fmt, args) 25 #endif 26 27 extern int mprintf(const char *, ...) NTP_PRINTF(1, 2); 28 extern int mfprintf(FILE *, const char *, ...) NTP_PRINTF(2, 3); 29 extern int mvfprintf(FILE *, const char *, va_list) NTP_PRINTF(2, 0); 30 extern int mvsnprintf(char *, size_t, const char *, va_list) 31 NTP_PRINTF(3, 0); 32 extern int msnprintf(char *, size_t, const char *, ...) 33 NTP_PRINTF(3, 4); 34 extern void msyslog(int, const char *, ...) NTP_PRINTF(2, 3); 35 extern void mvsyslog(int, const char *, va_list) NTP_PRINTF(2, 0); 36 extern void init_logging (const char *, u_int32, int); 37 extern int change_logfile (const char *, int); 38 extern void setup_logfile (const char *); 39 #ifndef errno_to_str 40 extern void errno_to_str(int, char *, size_t); 41 #endif 42 43 extern int xvsbprintf(char**, char* const, char const*, va_list) NTP_PRINTF(3, 0); 44 extern int xsbprintf(char**, char* const, char const*, ...) NTP_PRINTF(3, 4); 45 46 /* 47 * When building without OpenSSL, use a few macros of theirs to 48 * minimize source differences in NTP. 49 */ 50 #ifndef OPENSSL 51 #define NID_md5 4 /* from openssl/objects.h */ 52 /* from openssl/evp.h */ 53 #define EVP_MAX_MD_SIZE 64 /* longest known is SHA512 */ 54 #endif 55 56 #define SAVE_ERRNO(stmt) \ 57 { \ 58 int preserved_errno; \ 59 \ 60 preserved_errno = socket_errno(); \ 61 { \ 62 stmt \ 63 } \ 64 errno = preserved_errno; \ 65 } 66 67 typedef void (*ctrl_c_fn)(void); 68 69 /* authkeys.c */ 70 extern void auth_delkeys (void); 71 extern int auth_havekey (keyid_t); 72 extern int authdecrypt (keyid_t, u_int32 *, size_t, size_t); 73 extern size_t authencrypt (keyid_t, u_int32 *, size_t); 74 extern int authhavekey (keyid_t); 75 extern int authistrusted (keyid_t); 76 extern int authistrustedip (keyid_t, sockaddr_u *); 77 extern int authreadkeys (const char *); 78 extern void authtrust (keyid_t, u_long); 79 extern int authusekey (keyid_t, int, const u_char *); 80 81 /* 82 * Based on the NTP timestamp, calculate the NTP timestamp of 83 * the corresponding calendar unit. Use the pivot time to unfold 84 * the NTP timestamp properly, or the current system time if the 85 * pivot pointer is NULL. 86 */ 87 extern u_int32 calyearstart (u_int32 ntptime, const time_t *pivot); 88 extern u_int32 calmonthstart (u_int32 ntptime, const time_t *pivot); 89 extern u_int32 calweekstart (u_int32 ntptime, const time_t *pivot); 90 extern u_int32 caldaystart (u_int32 ntptime, const time_t *pivot); 91 92 extern const char *clockname (int); 93 extern int clocktime (int, int, int, int, int, u_int32, u_long *, u_int32 *); 94 extern int ntp_getopt (int, char **, const char *); 95 extern void init_auth (void); 96 extern void init_lib (void); 97 extern struct savekey *auth_findkey (keyid_t); 98 extern void auth_moremem (int); 99 extern void auth_prealloc_symkeys(int); 100 extern int ymd2yd (int, int, int); 101 102 /* a_md5encrypt.c */ 103 extern int MD5authdecrypt (int, const u_char *, size_t, u_int32 *, size_t, size_t); 104 extern size_t MD5authencrypt (int, const u_char *, size_t, u_int32 *, size_t); 105 extern void MD5auth_setkey (keyid_t, int, const u_char *, size_t, KeyAccT *c); 106 extern u_int32 addr2refid (sockaddr_u *); 107 108 /* emalloc.c */ 109 #ifndef EREALLOC_CALLSITE /* ntp_malloc.h defines */ 110 extern void * ereallocz (void *, size_t, size_t, int); 111 extern void * oreallocarrayxz (void *optr, size_t nmemb, size_t size, size_t extra); 112 #define erealloczsite(p, n, o, z, f, l) ereallocz((p), (n), (o), (z)) 113 #define emalloc(n) ereallocz(NULL, (n), 0, FALSE) 114 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE) 115 #define erealloc(p, c) ereallocz((p), (c), 0, FALSE) 116 #define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE) 117 #define ereallocarray(p, n, s) oreallocarrayxz((p), (n), (s), 0) 118 #define eallocarray(n, s) oreallocarrayxz(NULL, (n), (s), 0) 119 #define ereallocarrayxz(p, n, s, x) oreallocarrayxz((p), (n), (s), (x)) 120 #define eallocarrayxz(n, s, x) oreallocarrayxz(NULL, (n), (s), (x)) 121 extern char * estrdup_impl(const char *); 122 #define estrdup(s) estrdup_impl(s) 123 #else 124 extern void * ereallocz (void *, size_t, size_t, int, 125 const char *, int); 126 extern void * oreallocarrayxz (void *optr, size_t nmemb, size_t size, 127 size_t extra, const char *, int); 128 #define erealloczsite ereallocz 129 #define emalloc(c) ereallocz(NULL, (c), 0, FALSE, \ 130 __FILE__, __LINE__) 131 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE, \ 132 __FILE__, __LINE__) 133 #define erealloc(p, c) ereallocz((p), (c), 0, FALSE, \ 134 __FILE__, __LINE__) 135 #define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE, \ 136 __FILE__, __LINE__) 137 #define ereallocarray(p, n, s) oreallocarrayxz((p), (n), (s), 0, \ 138 __FILE__, __LINE__) 139 #define eallocarray(n, s) oreallocarrayxz(NULL, (n), (s), 0, \ 140 __FILE__, __LINE__) 141 #define ereallocarrayxz(p, n, s, x) oreallocarrayxz((p), (n), (s), (x), \ 142 __FILE__, __LINE__) 143 #define eallocarrayxz(n, s, x) oreallocarrayxz(NULL, (n), (s), (x), \ 144 __FILE__, __LINE__) 145 extern char * estrdup_impl(const char *, const char *, int); 146 #define estrdup(s) estrdup_impl((s), __FILE__, __LINE__) 147 #endif 148 149 150 extern int atoint (const char *, long *); 151 extern int atouint (const char *, u_long *); 152 extern int hextoint (const char *, u_long *); 153 extern const char * humanlogtime (void); 154 extern const char * humantime (time_t); 155 extern int is_ip_address (const char *, u_short, sockaddr_u *); 156 extern char * mfptoa (u_int32, u_int32, short); 157 extern char * mfptoms (u_int32, u_int32, short); 158 extern const char * modetoa (size_t); 159 extern const char * eventstr (int); 160 extern const char * ceventstr (int); 161 extern const char * res_match_flags(u_short); 162 extern const char * res_access_flags(u_short); 163 #ifdef KERNEL_PLL 164 extern const char * k_st_flags (u_int32); 165 #endif 166 extern char * statustoa (int, int); 167 extern sockaddr_u * netof (sockaddr_u *); 168 extern char * numtoa (u_int32); 169 extern char * numtohost (u_int32); 170 extern const char * socktoa (const sockaddr_u *); 171 extern const char * sockporttoa(const sockaddr_u *); 172 extern u_short sock_hash (const sockaddr_u *); 173 extern int sockaddr_masktoprefixlen(const sockaddr_u *); 174 extern const char * socktohost (const sockaddr_u *); 175 extern int octtoint (const char *, u_long *); 176 extern u_long ranp2 (int); 177 extern const char *refnumtoa (sockaddr_u *); 178 extern const char *refid_str (u_int32, int); 179 180 extern int decodenetnum (const char *, sockaddr_u *); 181 182 extern const char * FindConfig (const char *); 183 184 extern void signal_no_reset (int, RETSIGTYPE (*func)(int)); 185 extern void set_ctrl_c_hook (ctrl_c_fn); 186 187 extern void getauthkeys (const char *); 188 extern void auth_agekeys (void); 189 extern void rereadkeys (void); 190 191 /* 192 * Variable declarations for libntp. 193 */ 194 195 /* authkeys.c */ 196 extern u_long authkeynotfound; /* keys not found */ 197 extern u_long authkeylookups; /* calls to lookup keys */ 198 extern u_long authnumkeys; /* number of active keys */ 199 extern u_long authkeyexpired; /* key lifetime expirations */ 200 extern u_long authkeyuncached; /* cache misses */ 201 extern u_long authencryptions; /* calls to encrypt */ 202 extern u_long authdecryptions; /* calls to decrypt */ 203 204 extern int authnumfreekeys; 205 206 /* 207 * The key cache. We cache the last key we looked at here. 208 */ 209 extern keyid_t cache_keyid; /* key identifier */ 210 extern int cache_type; /* key type */ 211 extern u_char * cache_secret; /* secret */ 212 extern size_t cache_secretsize; /* secret octets */ 213 extern u_short cache_flags; /* KEY_ bit flags */ 214 215 /* getopt.c */ 216 extern char * ntp_optarg; /* global argument pointer */ 217 extern int ntp_optind; /* global argv index */ 218 219 /* lib_strbuf.c */ 220 extern int ipv4_works; 221 extern int ipv6_works; 222 223 /* machines.c */ 224 typedef void (*pset_tod_using)(const char *); 225 extern pset_tod_using set_tod_using; 226 227 /* ssl_init.c */ 228 #ifdef OPENSSL 229 extern void ssl_init (void); 230 extern void ssl_check_version (void); 231 extern int ssl_init_done; 232 #define INIT_SSL() \ 233 do { \ 234 if (!ssl_init_done) \ 235 ssl_init(); \ 236 } while (0) 237 #else /* !OPENSSL follows */ 238 #define INIT_SSL() do {} while (0) 239 #endif 240 extern int keytype_from_text (const char *, size_t *); 241 extern const char *keytype_name (int); 242 extern char * getpass_keytype (int); 243 244 /* strl-obsd.c */ 245 #ifndef HAVE_STRLCPY /* + */ 246 /* 247 * Copy src to string dst of size siz. At most siz-1 characters 248 * will be copied. Always NUL terminates (unless siz == 0). 249 * Returns strlen(src); if retval >= siz, truncation occurred. 250 */ 251 extern size_t strlcpy(char *dst, const char *src, size_t siz); 252 #endif 253 #ifndef HAVE_STRLCAT /* + */ 254 /* 255 * Appends src to string dst of size siz (unlike strncat, siz is the 256 * full size of dst, not space left). At most siz-1 characters 257 * will be copied. Always NUL terminates (unless siz <= strlen(dst)). 258 * Returns strlen(src) + MIN(siz, strlen(initial dst)). 259 * If retval >= siz, truncation occurred. 260 */ 261 extern size_t strlcat(char *dst, const char *src, size_t siz); 262 #endif 263 264 265 266 /* lib/isc/win32/strerror.c 267 * 268 * To minimize Windows-specific changes to the rest of the NTP code, 269 * particularly reference clocks, we hijack calls to strerror() to deal 270 * with our mixture of error codes from the C runtime (open, write) 271 * and Windows (sockets, serial ports). This is an ugly hack because 272 * both use the lowest values differently, but particularly for ntpd, 273 * it's not a problem. 274 */ 275 #ifdef NTP_REDEFINE_STRERROR 276 #define strerror(e) ntp_strerror(e) 277 extern char * ntp_strerror (int e); 278 #endif 279 280 /* systime.c */ 281 extern double sys_tick; /* tick size or time to read */ 282 extern double measured_tick; /* non-overridable sys_tick */ 283 extern double sys_fuzz; /* min clock read latency */ 284 extern int trunc_os_clock; /* sys_tick > measured_tick */ 285 286 /* version.c */ 287 extern const char *Version; /* version declaration */ 288 289 #endif /* NTP_STDLIB_H */ 290