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_md5.h" 15 #include "ntp_net.h" 16 #include "ntp_debug.h" 17 #include "ntp_malloc.h" 18 #include "ntp_string.h" 19 #include "ntp_syslog.h" 20 #include "ntp_keyacc.h" 21 22 #ifndef PATH_MAX 23 # define PATH_MAX MAX_PATH 24 #endif 25 26 #ifdef __GNUC__ 27 #define NTP_PRINTF(fmt, args) __attribute__((__format__(__printf__, fmt, args))) 28 #else 29 #define NTP_PRINTF(fmt, args) 30 #endif 31 32 extern int mprintf(const char *, ...) NTP_PRINTF(1, 2); 33 extern int mfprintf(FILE *, const char *, ...) NTP_PRINTF(2, 3); 34 extern int mvfprintf(FILE *, const char *, va_list) NTP_PRINTF(2, 0); 35 extern int mvsnprintf(char *, size_t, const char *, va_list) 36 NTP_PRINTF(3, 0); 37 extern int msnprintf(char *, size_t, const char *, ...) 38 NTP_PRINTF(3, 4); 39 extern void msyslog(int, const char *, ...) NTP_PRINTF(2, 3); 40 extern void mvsyslog(int, const char *, va_list) NTP_PRINTF(2, 0); 41 extern void init_logging (const char *, u_int32, int); 42 extern int change_logfile (const char *, int); 43 extern void setup_logfile (const char *); 44 #ifndef errno_to_str /* Windows port defines this */ 45 extern void errno_to_str(int, char *, size_t); 46 #endif 47 48 extern char * ntp_realpath(const char *fsname); 49 50 extern int xvsbprintf(char **, char * const, char const *, va_list) 51 NTP_PRINTF(3, 0); 52 extern int xsbprintf(char **, char * const, char const *, ...) 53 NTP_PRINTF(3, 4); 54 55 #define SAVE_ERRNO(stmt) \ 56 { \ 57 int preserved_errno; \ 58 \ 59 preserved_errno = socket_errno(); \ 60 { \ 61 stmt \ 62 } \ 63 errno = preserved_errno; \ 64 } 65 66 typedef void (*ctrl_c_fn)(void); 67 68 /* authkeys.c */ 69 #define AUTHPWD_MAXSECLEN 64 /* max. length of secret blob */ 70 71 enum AuthPwdEnc { 72 AUTHPWD_UNSPEC, /* format unspecified, length used for discrimination */ 73 AUTHPWD_PLAIN, /* plain text, used as is */ 74 AUTHPWD_HEX /* hex-encoded string */ 75 }; 76 77 extern void auth_delkeys (void); 78 extern int auth_havekey (keyid_t); 79 extern size_t authdecodepw (u_char *dst, size_t dstlen, const char *src, enum AuthPwdEnc); 80 extern int authdecrypt (keyid_t, u_int32 *, size_t, size_t); 81 extern size_t authencrypt (keyid_t, u_int32 *, size_t); 82 extern int authhavekey (keyid_t); 83 extern int authistrusted (keyid_t); 84 extern int authistrustedip (keyid_t, sockaddr_u *); 85 extern int authreadkeys (const char *); 86 extern void authtrust (keyid_t, u_long); 87 extern int authusekey (keyid_t, int, const u_char *); 88 89 /* 90 * Based on the NTP timestamp, calculate the NTP timestamp of 91 * the corresponding calendar unit. Use the pivot time to unfold 92 * the NTP timestamp properly, or the current system time if the 93 * pivot pointer is NULL. 94 */ 95 extern u_int32 calyearstart (u_int32 ntptime, const time_t *pivot); 96 extern u_int32 calmonthstart (u_int32 ntptime, const time_t *pivot); 97 extern u_int32 calweekstart (u_int32 ntptime, const time_t *pivot); 98 extern u_int32 caldaystart (u_int32 ntptime, const time_t *pivot); 99 100 extern const char *clockname (int); 101 extern int clocktime (int, int, int, int, int, u_int32, u_long *, u_int32 *); 102 extern int ntp_getopt (int, char **, const char *); 103 extern void init_auth (void); 104 extern void init_lib (void); 105 extern struct savekey *auth_findkey (keyid_t); 106 extern void auth_moremem (int); 107 extern void auth_prealloc_symkeys(int); 108 extern int ymd2yd (int, int, int); 109 110 /* a_md5encrypt.c */ 111 extern size_t MD5authencrypt (int type, const u_char *key, size_t klen, 112 u_int32 *pkt, size_t length); 113 extern int MD5authdecrypt (int type, const u_char *key, size_t klen, 114 u_int32 *pkt, size_t length, size_t size, 115 keyid_t keyno); 116 extern u_int32 addr2refid(sockaddr_u *); 117 118 /* authkeys.c */ 119 extern void MD5auth_setkey (keyid_t, int, const u_char *, size_t, 120 KeyAccT *c); 121 122 /* emalloc.c */ 123 #ifndef EREALLOC_CALLSITE /* ntp_malloc.h defines */ 124 extern void * ereallocz (void *, size_t, size_t, int); 125 extern void * oreallocarrayxz (void *optr, size_t nmemb, size_t size, size_t extra); 126 #define erealloczsite(p, n, o, z, f, l) ereallocz((p), (n), (o), (z)) 127 #define emalloc(n) ereallocz(NULL, (n), 0, FALSE) 128 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE) 129 #define erealloc(p, c) ereallocz((p), (c), 0, FALSE) 130 #define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE) 131 #define ereallocarray(p, n, s) oreallocarrayxz((p), (n), (s), 0) 132 #define eallocarray(n, s) oreallocarrayxz(NULL, (n), (s), 0) 133 #define ereallocarrayxz(p, n, s, x) oreallocarrayxz((p), (n), (s), (x)) 134 #define eallocarrayxz(n, s, x) oreallocarrayxz(NULL, (n), (s), (x)) 135 extern char * estrdup_impl(const char *); 136 #define estrdup(s) estrdup_impl(s) 137 #else 138 extern void * ereallocz (void *, size_t, size_t, int, 139 const char *, int); 140 extern void * oreallocarrayxz (void *optr, size_t nmemb, size_t size, 141 size_t extra, const char *, int); 142 #define erealloczsite ereallocz 143 #define emalloc(c) ereallocz(NULL, (c), 0, FALSE, \ 144 __FILE__, __LINE__) 145 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE, \ 146 __FILE__, __LINE__) 147 #define erealloc(p, c) ereallocz((p), (c), 0, FALSE, \ 148 __FILE__, __LINE__) 149 #define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE, \ 150 __FILE__, __LINE__) 151 #define ereallocarray(p, n, s) oreallocarrayxz((p), (n), (s), 0, \ 152 __FILE__, __LINE__) 153 #define eallocarray(n, s) oreallocarrayxz(NULL, (n), (s), 0, \ 154 __FILE__, __LINE__) 155 #define ereallocarrayxz(p, n, s, x) oreallocarrayxz((p), (n), (s), (x), \ 156 __FILE__, __LINE__) 157 #define eallocarrayxz(n, s, x) oreallocarrayxz(NULL, (n), (s), (x), \ 158 __FILE__, __LINE__) 159 extern char * estrdup_impl(const char *, const char *, int); 160 #define estrdup(s) estrdup_impl((s), __FILE__, __LINE__) 161 #endif 162 163 164 extern int atoint (const char *, long *); 165 extern int atouint (const char *, u_long *); 166 extern int hextoint (const char *, u_long *); 167 extern const char * humanlogtime (void); 168 extern const char * humantime (time_t); 169 extern int is_ip_address (const char *, u_short, sockaddr_u *); 170 extern char * mfptoa (u_int32, u_int32, short); 171 extern char * mfptoms (u_int32, u_int32, short); 172 extern const char * modetoa (size_t); 173 extern const char * eventstr (int); 174 extern const char * ceventstr (int); 175 extern const char * res_match_flags(u_short); 176 extern const char * res_access_flags(u_int32); 177 #ifdef KERNEL_PLL 178 extern const char * k_st_flags (u_int32); 179 #endif 180 extern char * statustoa (int, int); 181 extern sockaddr_u * netof (sockaddr_u *); 182 extern char * numtoa (u_int32); 183 extern char * numtohost (u_int32); 184 extern const char * socktoa (const sockaddr_u *); 185 extern const char * sockporttoa(const sockaddr_u *); 186 extern u_short sock_hash (const sockaddr_u *); 187 extern int sockaddr_masktoprefixlen(const sockaddr_u *); 188 extern const char * socktohost (const sockaddr_u *); 189 extern int octtoint (const char *, u_long *); 190 extern u_long ranp2 (int); 191 extern const char *refnumtoa (const sockaddr_u *); 192 extern const char *refid_str (u_int32, int); 193 194 extern int decodenetnum (const char *, sockaddr_u *); 195 196 extern const char * FindConfig (const char *); 197 198 extern void signal_no_reset (int, RETSIGTYPE (*func)(int)); 199 extern void set_ctrl_c_hook (ctrl_c_fn); 200 201 extern void getauthkeys (const char *); 202 extern void auth_agekeys (void); 203 extern void rereadkeys (void); 204 205 /* 206 * Variable declarations for libntp. 207 */ 208 209 /* authkeys.c */ 210 extern u_long authkeynotfound; /* keys not found */ 211 extern u_long authkeylookups; /* calls to lookup keys */ 212 extern u_long authnumkeys; /* number of active keys */ 213 extern u_long authkeyexpired; /* key lifetime expirations */ 214 extern u_long authkeyuncached; /* cache misses */ 215 extern u_long authencryptions; /* calls to encrypt */ 216 extern u_long authdecryptions; /* calls to decrypt */ 217 218 extern int authnumfreekeys; 219 220 /* 221 * The key cache. We cache the last key we looked at here. 222 */ 223 extern keyid_t cache_keyid; /* key identifier */ 224 extern int cache_type; /* key type */ 225 extern u_char * cache_secret; /* secret */ 226 extern size_t cache_secretsize; /* secret octets */ 227 extern u_short cache_flags; /* KEY_ bit flags */ 228 229 /* getopt.c */ 230 extern char * ntp_optarg; /* global argument pointer */ 231 extern int ntp_optind; /* global argv index */ 232 233 /* lib_strbuf.c */ 234 extern int ipv4_works; 235 extern int ipv6_works; 236 237 /* machines.c */ 238 typedef void (*pset_tod_using)(const char *); 239 extern pset_tod_using set_tod_using; 240 241 /* ssl_init.c */ 242 #ifdef OPENSSL 243 extern void ssl_init (void); 244 extern void ssl_check_version (void); 245 extern int ssl_init_done; 246 #define INIT_SSL() \ 247 do { \ 248 if (!ssl_init_done) \ 249 ssl_init(); \ 250 } while (0) 251 #else /* !OPENSSL follows */ 252 #define INIT_SSL() do {} while (0) 253 #endif 254 extern int keytype_from_text (const char *, size_t *); 255 extern const char *keytype_name (int); 256 extern char * getpass_keytype (int); 257 258 /* strl-obsd.c */ 259 #ifndef HAVE_STRLCPY /* + */ 260 /* 261 * Copy src to string dst of size siz. At most siz-1 characters 262 * will be copied. Always NUL terminates (unless siz == 0). 263 * Returns strlen(src); if retval >= siz, truncation occurred. 264 */ 265 extern size_t strlcpy(char *dst, const char *src, size_t siz); 266 #endif 267 #ifndef HAVE_STRLCAT /* + */ 268 /* 269 * Appends src to string dst of size siz (unlike strncat, siz is the 270 * full size of dst, not space left). At most siz-1 characters 271 * will be copied. Always NUL terminates (unless siz <= strlen(dst)). 272 * Returns strlen(src) + MIN(siz, strlen(initial dst)). 273 * If retval >= siz, truncation occurred. 274 */ 275 extern size_t strlcat(char *dst, const char *src, size_t siz); 276 #endif 277 278 279 280 /* lib/isc/win32/strerror.c 281 * 282 * To minimize Windows-specific changes to the rest of the NTP code, 283 * particularly reference clocks, we hijack calls to strerror() to deal 284 * with our mixture of error codes from the C runtime (open, write) 285 * and Windows (sockets, serial ports). This is an ugly hack because 286 * both use the lowest values differently, but particularly for ntpd, 287 * it's not a problem. 288 */ 289 #ifdef NTP_REDEFINE_STRERROR 290 #define strerror(e) ntp_strerror(e) 291 extern char * ntp_strerror (int e); 292 #endif 293 294 /* systime.c */ 295 extern double sys_tick; /* tick size or time to read */ 296 extern double measured_tick; /* non-overridable sys_tick */ 297 extern double sys_fuzz; /* min clock read latency */ 298 extern int trunc_os_clock; /* sys_tick > measured_tick */ 299 300 /* version.c */ 301 extern const char *Version; /* version declaration */ 302 303 #endif /* NTP_STDLIB_H */ 304