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