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