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+/*
+ * missing.c Replacements for functions that are or can be
+ * missing on some platforms.
+ *
+ * Version: $Id$
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ * Copyright 2000,2006 The FreeRADIUS server project
+ */
+
+RCSID("$Id$")
+
+#include <freeradius-devel/libradius.h>
+
+#include <ctype.h>
+
+#ifndef HAVE_CRYPT
+char *crypt(UNUSED char *key, char *salt)
+{
+ /*log(L_ERR, "crypt() called but not implemented");*/
+ return salt;
+}
+#endif
+
+#ifndef HAVE_STRNCASECMP
+int strncasecmp(char *s1, char *s2, int n)
+{
+ int dif;
+ unsigned char *p1, *p2;
+ int c1, c2;
+
+ p1 = (unsigned char *)s1;
+ p2 = (unsigned char *)s2;
+ dif = 0;
+
+ while (n != 0) {
+ if (*p1 == 0 && *p2 == 0)
+ break;
+ c1 = *p1;
+ c2 = *p2;
+
+ if (islower(c1)) c1 = toupper(c1);
+ if (islower(c2)) c2 = toupper(c2);
+
+ if ((dif = c1 - c2) != 0)
+ break;
+ p1++;
+ p2++;
+ n--;
+ }
+ return dif;
+}
+#endif
+
+#ifndef HAVE_STRCASECMP
+int strcasecmp(char *s1, char *s2)
+{
+ int l1, l2;
+
+ l1 = strlen(s1);
+ l2 = strlen(s2);
+ if (l2 > l1) l1 = l2;
+
+ return strncasecmp(s1, s2, l1);
+}
+#endif
+
+#ifndef HAVE_INET_ATON
+int inet_aton(char const *cp, struct in_addr *inp)
+{
+ int a1, a2, a3, a4;
+
+ if (sscanf(cp, "%d.%d.%d.%d", &a1, &a2, &a3, &a4) != 4)
+ return 0;
+
+ inp->s_addr = htonl((a1 << 24) + (a2 << 16) + (a3 << 8) + a4);
+ return 1;
+}
+#endif
+
+#ifndef HAVE_STRSEP
+/*
+ * Get next token from string *stringp, where tokens are
+ * possibly-empty strings separated by characters from delim.
+ *
+ * Writes NULs into the string at *stringp to end tokens.
+ * delim need not remain constant from call to call. On
+ * return, *stringp points past the last NUL written (if there
+ * might be further tokens), or is NULL (if there are
+ * definitely no more tokens).
+ *
+ * If *stringp is NULL, strsep returns NULL.
+ */
+char *
+strsep(char **stringp, char const *delim)
+{
+ char *s;
+ char const *spanp;
+ int c, sc;
+ char *tok;
+
+ if ((s = *stringp) == NULL)
+ return (NULL);
+
+ for (tok = s;;) {
+ c = *s++;
+ spanp = delim;
+ do {
+ if ((sc = *spanp++) == c) {
+ if (c == 0)
+ s = NULL;
+ else
+ s[-1] = 0;
+ *stringp = s;
+ return (tok);
+ }
+ } while (sc != 0);
+ }
+
+ return NULL; /* NOTREACHED, but the compiler complains */
+}
+#endif
+
+#ifndef HAVE_LOCALTIME_R
+/*
+ * We use localtime_r() by default in the server.
+ *
+ * For systems which do NOT have localtime_r(), we make the
+ * assumption that localtime() is re-entrant, and returns a
+ * per-thread data structure.
+ *
+ * Even if localtime is NOT re-entrant, this function will
+ * lower the possibility of race conditions.
+ */
+struct tm *localtime_r(time_t const *l_clock, struct tm *result)
+{
+ memcpy(result, localtime(l_clock), sizeof(*result));
+
+ return result;
+}
+#endif
+
+#ifndef HAVE_CTIME_R
+/*
+ * We use ctime_r() by default in the server.
+ *
+ * For systems which do NOT have ctime_r(), we make the
+ * assumption that ctime() is re-entrant, and returns a
+ * per-thread data structure.
+ *
+ * Even if ctime is NOT re-entrant, this function will
+ * lower the possibility of race conditions.
+ */
+char *ctime_r(time_t const *l_clock, char *l_buf)
+{
+ strcpy(l_buf, ctime(l_clock));
+
+ return l_buf;
+}
+#endif
+
+#ifndef HAVE_GMTIME_R
+/*
+ * We use gmtime_r() by default in the server.
+ *
+ * For systems which do NOT have gmtime_r(), we make the
+ * assumption that gmtime() is re-entrant, and returns a
+ * per-thread data structure.
+ *
+ * Even if gmtime is NOT re-entrant, this function will
+ * lower the possibility of race conditions.
+ */
+struct tm *gmtime_r(time_t const *l_clock, struct tm *result)
+{
+ memcpy(result, gmtime(l_clock), sizeof(*result));
+
+ return result;
+}
+#endif
+
+#ifndef HAVE_VDPRINTF
+int vdprintf (int fd, char const *format, va_list args)
+{
+ int ret;
+ FILE *fp;
+ int dup_fd;
+
+ dup_fd = dup(fd);
+ if (dup_fd < 0) return -1;
+
+ fp = fdopen(fd, "w");
+ if (!fp) {
+ close(dup_fd);
+ return -1;
+ }
+
+ ret = vfprintf(fp, format, args);
+ fclose(fp); /* Also closes dup_fd */
+
+ return ret;
+}
+#endif
+
+#ifndef HAVE_GETTIMEOFDAY
+#ifdef WIN32
+/*
+ * Number of micro-seconds between the beginning of the Windows epoch
+ * (Jan. 1, 1601) and the Unix epoch (Jan. 1, 1970).
+ *
+ * This assumes all Win32 compilers have 64-bit support.
+ */
+#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) || defined(__WATCOMC__)
+#define DELTA_EPOCH_IN_USEC 11644473600000000Ui64
+#else
+#define DELTA_EPOCH_IN_USEC 11644473600000000ULL
+#endif
+
+static uint64_t filetime_to_unix_epoch (FILETIME const *ft)
+{
+ uint64_t res = (uint64_t) ft->dwHighDateTime << 32;
+
+ res |= ft->dwLowDateTime;
+ res /= 10; /* from 100 nano-sec periods to usec */
+ res -= DELTA_EPOCH_IN_USEC; /* from Win epoch to Unix epoch */
+ return (res);
+}
+
+int gettimeofday (struct timeval *tv, UNUSED void *tz)
+{
+ FILETIME ft;
+ uint64_t tim;
+
+ if (!tv) {
+ errno = EINVAL;
+ return (-1);
+ }
+ GetSystemTimeAsFileTime (&ft);
+ tim = filetime_to_unix_epoch (&ft);
+ tv->tv_sec = (long) (tim / 1000000L);
+ tv->tv_usec = (long) (tim % 1000000L);
+ return (0);
+}
+#endif
+#endif
+
+#define NTP_EPOCH_OFFSET 2208988800ULL
+
+/*
+ * Convert 'struct timeval' into NTP format (32-bit integer
+ * of seconds, 32-bit integer of fractional seconds)
+ */
+void
+timeval2ntp(struct timeval const *tv, uint8_t *ntp)
+{
+ uint32_t sec, usec;
+
+ sec = tv->tv_sec + NTP_EPOCH_OFFSET;
+ usec = tv->tv_usec * 4295; /* close enough to 2^32 / USEC */
+ usec -= ((tv->tv_usec * 2143) >> 16); /* */
+
+ sec = htonl(sec);
+ usec = htonl(usec);
+
+ memcpy(ntp, &sec, sizeof(sec));
+ memcpy(ntp + sizeof(sec), &usec, sizeof(usec));
+}
+
+/*
+ * Inverse of timeval2ntp
+ */
+void
+ntp2timeval(struct timeval *tv, char const *ntp)
+{
+ uint32_t sec, usec;
+
+ memcpy(&sec, ntp, sizeof(sec));
+ memcpy(&usec, ntp + sizeof(sec), sizeof(usec));
+
+ sec = ntohl(sec);
+ usec = ntohl(usec);
+
+ tv->tv_sec = sec - NTP_EPOCH_OFFSET;
+ tv->tv_usec = usec / 4295; /* close enough */
+}
+
+#if !defined(HAVE_128BIT_INTEGERS) && defined(FR_LITTLE_ENDIAN)
+/** Swap byte order of 128 bit integer
+ *
+ * @param num 128bit integer to swap.
+ * @return 128bit integer reversed.
+ */
+uint128_t ntohlll(uint128_t const num)
+{
+ uint64_t const *p = (uint64_t const *) &num;
+ uint64_t ret[2];
+
+ /* swapsies */
+ ret[1] = ntohll(p[0]);
+ ret[0] = ntohll(p[1]);
+
+ return *(uint128_t *)ret;
+}
+#endif
+
+#ifdef HAVE_OPENSSL_HMAC_H
+# ifndef HAVE_HMAC_CTX_NEW
+HMAC_CTX *HMAC_CTX_new(void)
+{
+ HMAC_CTX *ctx;
+ ctx = OPENSSL_malloc(sizeof(*ctx));
+ if (!ctx) return NULL;
+
+ memset(ctx, 0, sizeof(*ctx));
+ HMAC_CTX_init(ctx);
+ return ctx;
+}
+# endif
+# ifndef HAVE_HMAC_CTX_FREE
+void HMAC_CTX_free(HMAC_CTX *ctx)
+{
+ if (ctx == NULL) {
+ return;
+ }
+ HMAC_CTX_cleanup(ctx);
+ OPENSSL_free(ctx);
+}
+# endif
+#endif
+
+#ifdef HAVE_OPENSSL_SSL_H
+# ifndef HAVE_SSL_GET_CLIENT_RANDOM
+size_t SSL_get_client_random(const SSL *s, unsigned char *out, size_t outlen)
+{
+ if (!outlen) return sizeof(s->s3->client_random);
+
+ if (outlen > sizeof(s->s3->client_random)) outlen = sizeof(s->s3->client_random);
+
+ memcpy(out, s->s3->client_random, outlen);
+ return outlen;
+}
+# endif
+# ifndef HAVE_SSL_GET_SERVER_RANDOM
+size_t SSL_get_server_random(const SSL *s, unsigned char *out, size_t outlen)
+{
+ if (!outlen) return sizeof(s->s3->server_random);
+
+ if (outlen > sizeof(s->s3->server_random)) outlen = sizeof(s->s3->server_random);
+
+ memcpy(out, s->s3->server_random, outlen);
+ return outlen;
+}
+# endif
+# ifndef HAVE_SSL_SESSION_GET_MASTER_KEY
+size_t SSL_SESSION_get_master_key(const SSL_SESSION *s,
+ unsigned char *out, size_t outlen)
+{
+ if (!outlen) return s->master_key_length;
+
+ if (outlen > (size_t)s->master_key_length) outlen = (size_t)s->master_key_length;
+
+ memcpy(out, s->master_key, outlen);
+ return outlen;
+}
+# endif
+#endif
+
+/** Call talloc strdup, setting the type on the new chunk correctly
+ *
+ * For some bizarre reason the talloc string functions don't set the
+ * memory chunk type to char, which causes all kinds of issues with
+ * verifying VALUE_PAIRs.
+ *
+ * @param[in] t The talloc context to hang the result off.
+ * @param[in] p The string you want to duplicate.
+ * @return The duplicated string, NULL on error.
+ */
+char *talloc_typed_strdup(void const *t, char const *p)
+{
+ char *n;
+
+ n = talloc_strdup(t, p);
+ if (!n) return NULL;
+ talloc_set_type(n, char);
+
+ return n;
+}
+
+/** Call talloc vasprintf, setting the type on the new chunk correctly
+ *
+ * For some bizarre reason the talloc string functions don't set the
+ * memory chunk type to char, which causes all kinds of issues with
+ * verifying VALUE_PAIRs.
+ *
+ * @param[in] t The talloc context to hang the result off.
+ * @param[in] fmt The format string.
+ * @return The formatted string, NULL on error.
+ */
+char *talloc_typed_asprintf(void const *t, char const *fmt, ...)
+{
+ char *n;
+ va_list ap;
+
+ va_start(ap, fmt);
+ n = talloc_vasprintf(t, fmt, ap);
+ va_end(ap);
+ if (!n) return NULL;
+ talloc_set_type(n, char);
+
+ return n;
+}
+
+/** Binary safe strndup function
+ *
+ * @param[in] t The talloc context o allocate new buffer in.
+ * @param[in] in String to dup, may contain embedded '\0'.
+ * @param[in] inlen Number of bytes to dup.
+ * @return duped string.
+ */
+char *talloc_bstrndup(void const *t, char const *in, size_t inlen)
+{
+ char *p;
+
+ p = talloc_array(t, char, inlen + 1);
+ if (!p) return NULL;
+ memcpy(p, in, inlen);
+ p[inlen] = '\0';
+
+ return p;
+}
+
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