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 27extern int mprintf(const char *, ...) NTP_PRINTF(1, 2); 28extern int mfprintf(FILE *, const char *, ...) NTP_PRINTF(2, 3); 29extern int mvfprintf(FILE *, const char *, va_list) NTP_PRINTF(2, 0); 30extern int mvsnprintf(char *, size_t, const char *, va_list) 31 NTP_PRINTF(3, 0); 32extern int msnprintf(char *, size_t, const char *, ...) 33 NTP_PRINTF(3, 4); 34extern void msyslog(int, const char *, ...) NTP_PRINTF(2, 3); 35extern void mvsyslog(int, const char *, va_list) NTP_PRINTF(2, 0); 36extern void init_logging (const char *, u_int32, int); 37extern int change_logfile (const char *, int); 38extern void setup_logfile (const char *); 39#ifndef errno_to_str 40extern void errno_to_str(int, char *, size_t); 41#endif 42 43extern int xvsbprintf(char**, char* const, char const*, va_list) NTP_PRINTF(3, 0); 44extern 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 67typedef void (*ctrl_c_fn)(void); 68 69/* authkeys.c */ 70extern void auth_delkeys (void); 71extern int auth_havekey (keyid_t); 72extern int authdecrypt (keyid_t, u_int32 *, size_t, size_t); 73extern size_t authencrypt (keyid_t, u_int32 *, size_t); 74extern int authhavekey (keyid_t); 75extern int authistrusted (keyid_t); 76extern int authistrustedip (keyid_t, sockaddr_u *); 77extern int authreadkeys (const char *); 78extern void authtrust (keyid_t, u_long); 79extern 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 */ 87extern u_int32 calyearstart (u_int32 ntptime, const time_t *pivot); 88extern u_int32 calmonthstart (u_int32 ntptime, const time_t *pivot); 89extern u_int32 calweekstart (u_int32 ntptime, const time_t *pivot); 90extern u_int32 caldaystart (u_int32 ntptime, const time_t *pivot); 91 92extern const char *clockname (int); 93extern int clocktime (int, int, int, int, int, u_int32, u_long *, u_int32 *); 94extern int ntp_getopt (int, char **, const char *); 95extern void init_auth (void); 96extern void init_lib (void); 97extern struct savekey *auth_findkey (keyid_t); 98extern void auth_moremem (int); 99extern void auth_prealloc_symkeys(int); 100extern int ymd2yd (int, int, int); 101 102/* a_md5encrypt.c */ 103extern int MD5authdecrypt (int, const u_char *, size_t, u_int32 *, size_t, size_t); 104extern size_t MD5authencrypt (int, const u_char *, size_t, u_int32 *, size_t); 105extern void MD5auth_setkey (keyid_t, int, const u_char *, size_t, KeyAccT *c); 106extern u_int32 addr2refid (sockaddr_u *); 107 108/* emalloc.c */ 109#ifndef EREALLOC_CALLSITE /* ntp_malloc.h defines */ 110extern void * ereallocz (void *, size_t, size_t, int); 111extern 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)) 121extern char * estrdup_impl(const char *); 122#define estrdup(s) estrdup_impl(s) 123#else 124extern void * ereallocz (void *, size_t, size_t, int, 125 const char *, int); 126extern 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__) 145extern char * estrdup_impl(const char *, const char *, int); 146#define estrdup(s) estrdup_impl((s), __FILE__, __LINE__) 147#endif 148 149 150extern int atoint (const char *, long *); 151extern int atouint (const char *, u_long *); 152extern int hextoint (const char *, u_long *); 153extern const char * humanlogtime (void); 154extern const char * humantime (time_t); 155extern int is_ip_address (const char *, u_short, sockaddr_u *); 156extern char * mfptoa (u_int32, u_int32, short); 157extern char * mfptoms (u_int32, u_int32, short); 158extern const char * modetoa (size_t); 159extern const char * eventstr (int); 160extern const char * ceventstr (int); 161extern const char * res_match_flags(u_short); 162extern const char * res_access_flags(u_int32); 163#ifdef KERNEL_PLL 164extern const char * k_st_flags (u_int32); 165#endif 166extern char * statustoa (int, int); 167extern sockaddr_u * netof (sockaddr_u *); 168extern char * numtoa (u_int32); 169extern char * numtohost (u_int32); 170extern const char * socktoa (const sockaddr_u *); 171extern const char * sockporttoa(const sockaddr_u *); 172extern u_short sock_hash (const sockaddr_u *); 173extern int sockaddr_masktoprefixlen(const sockaddr_u *); 174extern const char * socktohost (const sockaddr_u *); 175extern int octtoint (const char *, u_long *); 176extern u_long ranp2 (int); 177extern const char *refnumtoa (sockaddr_u *); 178extern const char *refid_str (u_int32, int); 179 180extern int decodenetnum (const char *, sockaddr_u *); 181 182extern const char * FindConfig (const char *); 183 184extern void signal_no_reset (int, RETSIGTYPE (*func)(int)); 185extern void set_ctrl_c_hook (ctrl_c_fn); 186 187extern void getauthkeys (const char *); 188extern void auth_agekeys (void); 189extern void rereadkeys (void); 190 191/* 192 * Variable declarations for libntp. 193 */ 194 195/* authkeys.c */ 196extern u_long authkeynotfound; /* keys not found */ 197extern u_long authkeylookups; /* calls to lookup keys */ 198extern u_long authnumkeys; /* number of active keys */ 199extern u_long authkeyexpired; /* key lifetime expirations */ 200extern u_long authkeyuncached; /* cache misses */ 201extern u_long authencryptions; /* calls to encrypt */ 202extern u_long authdecryptions; /* calls to decrypt */ 203 204extern int authnumfreekeys; 205 206/* 207 * The key cache. We cache the last key we looked at here. 208 */ 209extern keyid_t cache_keyid; /* key identifier */ 210extern int cache_type; /* key type */ 211extern u_char * cache_secret; /* secret */ 212extern size_t cache_secretsize; /* secret octets */ 213extern u_short cache_flags; /* KEY_ bit flags */ 214 215/* getopt.c */ 216extern char * ntp_optarg; /* global argument pointer */ 217extern int ntp_optind; /* global argv index */ 218 219/* lib_strbuf.c */ 220extern int ipv4_works; 221extern int ipv6_works; 222 223/* machines.c */ 224typedef void (*pset_tod_using)(const char *); 225extern pset_tod_using set_tod_using; 226 227/* ssl_init.c */ 228#ifdef OPENSSL 229extern void ssl_init (void); 230extern void ssl_check_version (void); 231extern 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 240extern int keytype_from_text (const char *, size_t *); 241extern const char *keytype_name (int); 242extern 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 */ 251extern 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 */ 261extern 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) 277extern char * ntp_strerror (int e); 278#endif 279 280/* systime.c */ 281extern double sys_tick; /* tick size or time to read */ 282extern double measured_tick; /* non-overridable sys_tick */ 283extern double sys_fuzz; /* min clock read latency */ 284extern int trunc_os_clock; /* sys_tick > measured_tick */ 285 286/* version.c */ 287extern const char *Version; /* version declaration */ 288 289#endif /* NTP_STDLIB_H */ 290