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 "lib_strbuf.h" 15 #include "ntp_md5.h" 16 #include "ntp_net.h" 17 #include "ntp_debug.h" 18 #include "ntp_malloc.h" 19 #include "lib_strbuf.h" 20 #include "ntp_string.h" 21 #include "ntp_syslog.h" 22 #include "ntp_keyacc.h" 23 24 #ifndef PATH_MAX 25 # define PATH_MAX MAX_PATH 26 #endif 27 28 #ifdef __GNUC__ 29 #define NTP_PRINTF(fmt, args) __attribute__((__format__(__printf__, fmt, args))) 30 #else 31 #define NTP_PRINTF(fmt, args) 32 #endif 33 34 extern int mprintf(const char *, ...) NTP_PRINTF(1, 2); 35 extern int mfprintf(FILE *, const char *, ...) NTP_PRINTF(2, 3); 36 extern int mvfprintf(FILE *, const char *, va_list) NTP_PRINTF(2, 0); 37 extern int mvsnprintf(char *, size_t, const char *, va_list) 38 NTP_PRINTF(3, 0); 39 extern int msnprintf(char *, size_t, const char *, ...) 40 NTP_PRINTF(3, 4); 41 extern void msyslog(int, const char *, ...) NTP_PRINTF(2, 3); 42 extern void mvsyslog(int, const char *, va_list) NTP_PRINTF(2, 0); 43 extern void init_logging (const char *, u_int32, int); 44 extern int change_logfile (const char *, int); 45 extern void setup_logfile (const char *); 46 #ifndef errno_to_str /* Windows port defines this */ 47 extern void errno_to_str(int, char *, size_t); 48 #endif 49 50 extern char * ntp_realpath(const char *fsname); 51 52 extern int xvsbprintf(char **, char * const, char const *, va_list) 53 NTP_PRINTF(3, 0); 54 extern int xsbprintf(char **, char * const, char const *, ...) 55 NTP_PRINTF(3, 4); 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 #define AUTHPWD_MAXSECLEN 64 /* max. length of secret blob */ 72 73 enum AuthPwdEnc { 74 AUTHPWD_UNSPEC, /* format unspecified, length used for discrimination */ 75 AUTHPWD_PLAIN, /* plain text, used as is */ 76 AUTHPWD_HEX /* hex-encoded string */ 77 }; 78 79 extern void auth_delkeys (void); 80 extern int auth_havekey (keyid_t); 81 extern size_t authdecodepw (u_char *dst, size_t dstlen, const char *src, enum AuthPwdEnc); 82 extern int authdecrypt (keyid_t, u_int32 *, size_t, size_t); 83 extern size_t authencrypt (keyid_t, u_int32 *, size_t); 84 extern int authhavekey (keyid_t); 85 extern int authistrusted (keyid_t); 86 extern int authistrustedip (keyid_t, sockaddr_u *); 87 extern int authreadkeys (const char *); 88 extern void authtrust (keyid_t, u_long); 89 extern int authusekey (keyid_t, int, const u_char *); 90 91 /* 92 * Based on the NTP timestamp, calculate the NTP timestamp of 93 * the corresponding calendar unit. Use the pivot time to unfold 94 * the NTP timestamp properly, or the current system time if the 95 * pivot pointer is NULL. 96 */ 97 extern u_int32 calyearstart (u_int32 ntptime, const time_t *pivot); 98 extern u_int32 calmonthstart (u_int32 ntptime, const time_t *pivot); 99 extern u_int32 calweekstart (u_int32 ntptime, const time_t *pivot); 100 extern u_int32 caldaystart (u_int32 ntptime, const time_t *pivot); 101 102 extern const char *clockname (int); 103 extern int clocktime (int, int, int, int, int, u_int32, u_long *, u_int32 *); 104 extern int ntp_getopt (int, char **, const char *); 105 extern void init_auth (void); 106 extern void init_lib (void); 107 extern struct savekey *auth_findkey (keyid_t); 108 extern void auth_moremem (int); 109 extern void auth_prealloc_symkeys(int); 110 extern int ymd2yd (int, int, int); 111 112 /* a_md5encrypt.c */ 113 extern size_t MD5authencrypt (int type, const u_char *key, size_t klen, 114 u_int32 *pkt, size_t length); 115 extern int MD5authdecrypt (int type, const u_char *key, size_t klen, 116 u_int32 *pkt, size_t length, size_t size, 117 keyid_t keyno); 118 extern u_int32 addr2refid (sockaddr_u *); 119 120 /* authkeys.c */ 121 extern void MD5auth_setkey (keyid_t, int, const u_char *, size_t, 122 KeyAccT *c); 123 124 /* emalloc.c */ 125 #ifndef EREALLOC_CALLSITE /* ntp_malloc.h defines */ 126 extern void * ereallocz (void *, size_t, size_t, int); 127 extern void * oreallocarrayxz (void *optr, size_t nmemb, size_t size, size_t extra); 128 #define erealloczsite(p, n, o, z, f, l) ereallocz((p), (n), (o), (z)) 129 #define emalloc(n) ereallocz(NULL, (n), 0, FALSE) 130 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE) 131 #define erealloc(p, c) ereallocz((p), (c), 0, FALSE) 132 #define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE) 133 #define ereallocarray(p, n, s) oreallocarrayxz((p), (n), (s), 0) 134 #define eallocarray(n, s) oreallocarrayxz(NULL, (n), (s), 0) 135 #define ereallocarrayxz(p, n, s, x) oreallocarrayxz((p), (n), (s), (x)) 136 #define eallocarrayxz(n, s, x) oreallocarrayxz(NULL, (n), (s), (x)) 137 extern char * estrdup_impl(const char *); 138 #define estrdup(s) estrdup_impl(s) 139 #else 140 extern void * ereallocz (void *, size_t, size_t, int, 141 const char *, int); 142 extern void * oreallocarrayxz (void *optr, size_t nmemb, size_t size, 143 size_t extra, const char *, int); 144 #define erealloczsite ereallocz 145 #define emalloc(c) ereallocz(NULL, (c), 0, FALSE, \ 146 __FILE__, __LINE__) 147 #define emalloc_zero(c) ereallocz(NULL, (c), 0, TRUE, \ 148 __FILE__, __LINE__) 149 #define erealloc(p, c) ereallocz((p), (c), 0, FALSE, \ 150 __FILE__, __LINE__) 151 #define erealloc_zero(p, n, o) ereallocz((p), (n), (o), TRUE, \ 152 __FILE__, __LINE__) 153 #define ereallocarray(p, n, s) oreallocarrayxz((p), (n), (s), 0, \ 154 __FILE__, __LINE__) 155 #define eallocarray(n, s) oreallocarrayxz(NULL, (n), (s), 0, \ 156 __FILE__, __LINE__) 157 #define ereallocarrayxz(p, n, s, x) oreallocarrayxz((p), (n), (s), (x), \ 158 __FILE__, __LINE__) 159 #define eallocarrayxz(n, s, x) oreallocarrayxz(NULL, (n), (s), (x), \ 160 __FILE__, __LINE__) 161 extern char * estrdup_impl(const char *, const char *, int); 162 #define estrdup(s) estrdup_impl((s), __FILE__, __LINE__) 163 #endif 164 165 166 extern int atoint (const char *, long *); 167 extern int atouint (const char *, u_long *); 168 extern int hextoint (const char *, u_long *); 169 extern const char * humanlogtime (void); 170 extern const char * humantime (time_t); 171 extern int is_ip_address (const char *, u_short, sockaddr_u *); 172 extern char * mfptoa (u_int32, u_int32, short); 173 extern char * mfptoms (u_int32, u_int32, short); 174 extern const char * modetoa (size_t); 175 extern const char * eventstr (int); 176 extern const char * ceventstr (int); 177 extern const char * res_match_flags(u_short); 178 extern const char * res_access_flags(u_int32); 179 #ifdef KERNEL_PLL 180 extern const char * k_st_flags (u_int32); 181 #endif 182 extern char * statustoa (int, int); 183 extern sockaddr_u * netof (sockaddr_u *); 184 extern char * numtoa (u_int32); 185 extern const char * socktoa (const sockaddr_u *); 186 extern const char * sockporttoa(const sockaddr_u *); 187 extern u_short sock_hash (const sockaddr_u *); 188 extern int sockaddr_masktoprefixlen(const sockaddr_u *); 189 extern const char * socktohost (const sockaddr_u *); 190 extern int octtoint (const char *, u_long *); 191 extern u_long ranp2 (int); 192 extern const char *refnumtoa (const sockaddr_u *); 193 extern const char *refid_str (u_int32, int); 194 195 extern int decodenetnum (const char *, sockaddr_u *); 196 197 extern const char * FindConfig (const char *); 198 199 extern void signal_no_reset (int, RETSIGTYPE (*func)(int)); 200 extern void set_ctrl_c_hook (ctrl_c_fn); 201 202 extern void getauthkeys (const char *); 203 extern void auth_agekeys (void); 204 extern void rereadkeys (void); 205 206 /* 207 * Variable declarations for libntp. 208 */ 209 210 /* authkeys.c */ 211 extern u_long authkeynotfound; /* keys not found */ 212 extern u_long authkeylookups; /* calls to lookup keys */ 213 extern u_long authnumkeys; /* number of active keys */ 214 extern u_long authkeyexpired; /* key lifetime expirations */ 215 extern u_long authkeyuncached; /* cache misses */ 216 extern u_long authencryptions; /* calls to encrypt */ 217 extern u_long authdecryptions; /* calls to decrypt */ 218 219 extern int authnumfreekeys; 220 221 /* 222 * The key cache. We cache the last key we looked at here. 223 */ 224 extern keyid_t cache_keyid; /* key identifier */ 225 extern int cache_type; /* key type */ 226 extern u_char * cache_secret; /* secret */ 227 extern size_t cache_secretsize; /* secret octets */ 228 extern u_short cache_flags; /* KEY_ bit flags */ 229 230 /* getopt.c */ 231 extern char * ntp_optarg; /* global argument pointer */ 232 extern int ntp_optind; /* global argv index */ 233 234 /* lib_strbuf.c */ 235 extern int ipv4_works; 236 extern int ipv6_works; 237 238 /* machines.c */ 239 typedef void (*pset_tod_using)(const char *); 240 extern pset_tod_using set_tod_using; 241 242 /* ssl_init.c */ 243 #ifdef OPENSSL 244 extern void ssl_init (void); 245 extern void ssl_check_version (void); 246 extern EVP_MD_CTX* digest_ctx; /* also ssl_init_done */ 247 #define INIT_SSL() \ 248 do { \ 249 if (NULL == digest_ctx) { \ 250 ssl_init(); \ 251 } \ 252 } while (FALSE) 253 #else /* !OPENSSL follows */ 254 #define ssl_check_version() do {} while (0) 255 #define INIT_SSL() do {} while (0) 256 #endif 257 extern int keytype_from_text (const char *text, 258 size_t *pdigest_len); 259 extern const char *keytype_name (int type); 260 extern char * getpass_keytype (int type); 261 262 /* strl-obsd.c */ 263 #ifndef HAVE_STRLCPY /* + */ 264 /* 265 * Copy src to string dst of size siz. At most siz-1 characters 266 * will be copied. Always NUL terminates (unless siz == 0). 267 * Returns strlen(src); if retval >= siz, truncation occurred. 268 */ 269 extern size_t strlcpy(char *dst, const char *src, size_t siz); 270 #endif 271 #ifndef HAVE_STRLCAT /* + */ 272 /* 273 * Appends src to string dst of size siz (unlike strncat, siz is the 274 * full size of dst, not space left). At most siz-1 characters 275 * will be copied. Always NUL terminates (unless siz <= strlen(dst)). 276 * Returns strlen(src) + MIN(siz, strlen(initial dst)). 277 * If retval >= siz, truncation occurred. 278 */ 279 extern size_t strlcat(char *dst, const char *src, size_t siz); 280 #endif 281 282 283 284 /* lib/isc/win32/strerror.c 285 * 286 * To minimize Windows-specific changes to the rest of the NTP code, 287 * particularly reference clocks, we hijack calls to strerror() to deal 288 * with our mixture of error codes from the C runtime (open, write) 289 * and Windows (sockets, serial ports). This is an ugly hack because 290 * both use the lowest values differently, but particularly for ntpd, 291 * it's not a problem. 292 */ 293 #ifdef NTP_REDEFINE_STRERROR 294 #define strerror(e) ntp_strerror(e) 295 extern char * ntp_strerror (int e); 296 #endif 297 298 /* systime.c */ 299 extern double sys_tick; /* tick size or time to read */ 300 extern double measured_tick; /* non-overridable sys_tick */ 301 extern double sys_fuzz; /* min clock read latency */ 302 extern int trunc_os_clock; /* sys_tick > measured_tick */ 303 304 /* version.c */ 305 extern const char *Version; /* version declaration */ 306 307 #endif /* NTP_STDLIB_H */ 308