-/*
- * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2012 The OpenLDAP Foundation.
+ * Portions Copyright 1998 A. Hartgers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
*/
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Bart Hartgers for inclusion in
+ * OpenLDAP Software.
+ */
+
/*
* util-int.c Various functions to replace missing threadsafe ones.
- * Without the real *_r funcs, things will work, but won't be
- * threadsafe.
- *
- * Written by Bart Hartgers.
- *
- * Copyright 1998, A. Hartgers, All rights reserved.
- * This software is not subject to any license of Eindhoven University of
- * Technology, since it was written in my spare time.
- *
- * Redistribution and use in source and binary forms are permitted only
- * as authorized by the OpenLDAP Public License. A copy of this
- * license is available at http://www.OpenLDAP.org/license.html or
- * in file LICENSE in the top-level directory of the distribution.
- */
+ * Without the real *_r funcs, things will
+ * work, but might not be threadsafe.
+ */
#include "portable.h"
-#include <stdlib.h>
+#include <ac/stdlib.h>
#include <ac/errno.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
+#include <ac/unistd.h>
#include "ldap-int.h"
-char *ldap_int_strtok( char *str, const char *delim, char **pos )
-{
-#ifdef HAVE_STRTOK_R
- return strtok_r(str, delim, pos);
+#ifndef h_errno
+/* newer systems declare this in <netdb.h> for you, older ones don't.
+ * harmless to declare it again (unless defined by a macro).
+ */
+extern int h_errno;
+#endif
+
+#ifdef HAVE_HSTRERROR
+# define HSTRERROR(e) hstrerror(e)
#else
- return strtok(str, delim);
+# define HSTRERROR(e) hp_strerror(e)
#endif
-}
-char *ldap_int_ctime( const time_t *tp, char *buf )
+#ifndef LDAP_R_COMPILE
+# undef HAVE_REENTRANT_FUNCTIONS
+# undef HAVE_CTIME_R
+# undef HAVE_GETHOSTBYNAME_R
+# undef HAVE_GETHOSTBYADDR_R
+
+#else
+# include <ldap_pvt_thread.h>
+ ldap_pvt_thread_mutex_t ldap_int_resolv_mutex;
+ ldap_pvt_thread_mutex_t ldap_int_hostname_mutex;
+ static ldap_pvt_thread_mutex_t ldap_int_gettime_mutex;
+
+# if (defined( HAVE_CTIME_R ) || defined( HAVE_REENTRANT_FUNCTIONS)) \
+ && defined( CTIME_R_NARGS )
+# define USE_CTIME_R
+# else
+ static ldap_pvt_thread_mutex_t ldap_int_ctime_mutex;
+# endif
+
+/* USE_GMTIME_R and USE_LOCALTIME_R defined in ldap_pvt.h */
+
+#ifdef LDAP_DEVEL
+ /* to be released with 2.5 */
+#if !defined( USE_GMTIME_R ) || !defined( USE_LOCALTIME_R )
+ /* we use the same mutex for gmtime(3) and localtime(3)
+ * because implementations may use the same buffer
+ * for both functions */
+ static ldap_pvt_thread_mutex_t ldap_int_gmtime_mutex;
+#endif
+#else /* ! LDAP_DEVEL */
+ ldap_pvt_thread_mutex_t ldap_int_gmtime_mutex;
+#endif /* ! LDAP_DEVEL */
+
+# if defined(HAVE_GETHOSTBYNAME_R) && \
+ (GETHOSTBYNAME_R_NARGS < 5) || (6 < GETHOSTBYNAME_R_NARGS)
+ /* Don't know how to handle this version, pretend it's not there */
+# undef HAVE_GETHOSTBYNAME_R
+# endif
+# if defined(HAVE_GETHOSTBYADDR_R) && \
+ (GETHOSTBYADDR_R_NARGS < 7) || (8 < GETHOSTBYADDR_R_NARGS)
+ /* Don't know how to handle this version, pretend it's not there */
+# undef HAVE_GETHOSTBYADDR_R
+# endif
+#endif /* LDAP_R_COMPILE */
+
+char *ldap_pvt_ctime( const time_t *tp, char *buf )
{
-#ifdef HAVE_CTIME_R
-# if defined( ARGS_CTIME_R_2 )
- return ctime_r(tp,buf);
-# elif defined( ARGS_CTIME_R_3 )
+#ifdef USE_CTIME_R
+# if (CTIME_R_NARGS > 3) || (CTIME_R_NARGS < 2)
+# error "CTIME_R_NARGS should be 2 or 3"
+# elif CTIME_R_NARGS > 2 && defined(CTIME_R_RETURNS_INT)
+ return( ctime_r(tp,buf,26) < 0 ? 0 : buf );
+# elif CTIME_R_NARGS > 2
return ctime_r(tp,buf,26);
# else
- Do not know how many arguments ctime_r takes, so generating error
+ return ctime_r(tp,buf);
# endif
+
#else
- return ctime(tp);
+
+ LDAP_MUTEX_LOCK( &ldap_int_ctime_mutex );
+ AC_MEMCPY( buf, ctime(tp), 26 );
+ LDAP_MUTEX_UNLOCK( &ldap_int_ctime_mutex );
+
+ return buf;
#endif
}
-#define BUFSTART 1024
-#define BUFMAX (32*1024)
+#if !defined( USE_GMTIME_R ) || !defined( USE_LOCALTIME_R )
+int
+ldap_pvt_gmtime_lock( void )
+{
+# ifndef LDAP_R_COMPILE
+ return 0;
+# else /* LDAP_R_COMPILE */
+ return ldap_pvt_thread_mutex_lock( &ldap_int_gmtime_mutex );
+# endif /* LDAP_R_COMPILE */
+}
-static char *safe_realloc( char **buf, int len )
+int
+ldap_pvt_gmtime_unlock( void )
{
- char *tmpbuf;
- tmpbuf = realloc( *buf, len );
- if (tmpbuf) {
- *buf=tmpbuf;
- }
- return tmpbuf;
+# ifndef LDAP_R_COMPILE
+ return 0;
+# else /* LDAP_R_COMPILE */
+ return ldap_pvt_thread_mutex_unlock( &ldap_int_gmtime_mutex );
+# endif /* LDAP_R_COMPILE */
+}
+#endif /* !USE_GMTIME_R || !USE_LOCALTIME_R */
+
+#ifndef USE_GMTIME_R
+struct tm *
+ldap_pvt_gmtime( const time_t *timep, struct tm *result )
+{
+ struct tm *tm_ptr;
+
+ LDAP_MUTEX_LOCK( &ldap_int_gmtime_mutex );
+ tm_ptr = gmtime( timep );
+ if ( tm_ptr == NULL ) {
+ result = NULL;
+
+ } else {
+ *result = *tm_ptr;
+ }
+ LDAP_MUTEX_UNLOCK( &ldap_int_gmtime_mutex );
+
+ return result;
}
-
-int ldap_int_gethostbyname_a(
+#endif /* !USE_GMTIME_R */
+
+#ifndef USE_LOCALTIME_R
+struct tm *
+ldap_pvt_localtime( const time_t *timep, struct tm *result )
+{
+ struct tm *tm_ptr;
+
+ LDAP_MUTEX_LOCK( &ldap_int_gmtime_mutex );
+ tm_ptr = localtime( timep );
+ if ( tm_ptr == NULL ) {
+ result = NULL;
+
+ } else {
+ *result = *tm_ptr;
+ }
+ LDAP_MUTEX_UNLOCK( &ldap_int_gmtime_mutex );
+
+ return result;
+}
+#endif /* !USE_LOCALTIME_R */
+
+/* return a broken out time, with microseconds
+ */
+#ifdef _WIN32
+/* Windows SYSTEMTIME only has 10 millisecond resolution, so we
+ * also need to use a high resolution timer to get microseconds.
+ * This is pretty clunky.
+ */
+void
+ldap_pvt_gettime( struct lutil_tm *tm )
+{
+ static LARGE_INTEGER cFreq;
+ static LARGE_INTEGER prevCount;
+ static int subs;
+ static int offset;
+ LARGE_INTEGER count;
+ SYSTEMTIME st;
+
+ GetSystemTime( &st );
+ QueryPerformanceCounter( &count );
+
+ /* It shouldn't ever go backwards, but multiple CPUs might
+ * be able to hit in the same tick.
+ */
+ LDAP_MUTEX_LOCK( &ldap_int_gettime_mutex );
+ if ( count.QuadPart <= prevCount.QuadPart ) {
+ subs++;
+ } else {
+ subs = 0;
+ prevCount = count;
+ }
+ LDAP_MUTEX_UNLOCK( &ldap_int_gettime_mutex );
+
+ /* We assume Windows has at least a vague idea of
+ * when a second begins. So we align our microsecond count
+ * with the Windows millisecond count using this offset.
+ * We retain the submillisecond portion of our own count.
+ *
+ * Note - this also assumes that the relationship between
+ * the PerformanceCouunter and SystemTime stays constant;
+ * that assumption breaks if the SystemTime is adjusted by
+ * an external action.
+ */
+ if ( !cFreq.QuadPart ) {
+ long long t;
+ int usec;
+ QueryPerformanceFrequency( &cFreq );
+
+ /* just get sub-second portion of counter */
+ t = count.QuadPart % cFreq.QuadPart;
+
+ /* convert to microseconds */
+ t *= 1000000;
+ usec = t / cFreq.QuadPart;
+
+ offset = usec - st.wMilliseconds * 1000;
+ }
+
+ tm->tm_usub = subs;
+
+ /* convert to microseconds */
+ count.QuadPart %= cFreq.QuadPart;
+ count.QuadPart *= 1000000;
+ count.QuadPart /= cFreq.QuadPart;
+ count.QuadPart -= offset;
+
+ tm->tm_usec = count.QuadPart % 1000000;
+ if ( tm->tm_usec < 0 )
+ tm->tm_usec += 1000000;
+
+ /* any difference larger than microseconds is
+ * already reflected in st
+ */
+
+ tm->tm_sec = st.wSecond;
+ tm->tm_min = st.wMinute;
+ tm->tm_hour = st.wHour;
+ tm->tm_mday = st.wDay;
+ tm->tm_mon = st.wMonth - 1;
+ tm->tm_year = st.wYear - 1900;
+}
+#else
+void
+ldap_pvt_gettime( struct lutil_tm *ltm )
+{
+ struct timeval tv;
+ static struct timeval prevTv;
+ static int subs;
+
+ struct tm tm;
+ time_t t;
+
+ gettimeofday( &tv, NULL );
+ t = tv.tv_sec;
+
+ LDAP_MUTEX_LOCK( &ldap_int_gettime_mutex );
+ if ( tv.tv_sec < prevTv.tv_sec
+ || ( tv.tv_sec == prevTv.tv_sec && tv.tv_usec <= prevTv.tv_usec )) {
+ subs++;
+ } else {
+ subs = 0;
+ prevTv = tv;
+ }
+ LDAP_MUTEX_UNLOCK( &ldap_int_gettime_mutex );
+
+ ltm->tm_usub = subs;
+
+ ldap_pvt_gmtime( &t, &tm );
+
+ ltm->tm_sec = tm.tm_sec;
+ ltm->tm_min = tm.tm_min;
+ ltm->tm_hour = tm.tm_hour;
+ ltm->tm_mday = tm.tm_mday;
+ ltm->tm_mon = tm.tm_mon;
+ ltm->tm_year = tm.tm_year;
+ ltm->tm_usec = tv.tv_usec;
+}
+#endif
+
+size_t
+ldap_pvt_csnstr(char *buf, size_t len, unsigned int replica, unsigned int mod)
+{
+ struct lutil_tm tm;
+ int n;
+
+ ldap_pvt_gettime( &tm );
+
+ n = snprintf( buf, len,
+ "%4d%02d%02d%02d%02d%02d.%06dZ#%06x#%03x#%06x",
+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour,
+ tm.tm_min, tm.tm_sec, tm.tm_usec, tm.tm_usub, replica, mod );
+
+ if( n < 0 ) return 0;
+ return ( (size_t) n < len ) ? n : 0;
+}
+
+#define BUFSTART (1024-32)
+#define BUFMAX (32*1024-32)
+
+#if defined(LDAP_R_COMPILE)
+static char *safe_realloc( char **buf, int len );
+
+#if !(defined(HAVE_GETHOSTBYNAME_R) && defined(HAVE_GETHOSTBYADDR_R))
+static int copy_hostent( struct hostent *res,
+ char **buf, struct hostent * src );
+#endif
+#endif
+
+int ldap_pvt_gethostbyname_a(
const char *name,
struct hostent *resbuf,
char **buf,
struct hostent **result,
int *herrno_ptr )
{
-#ifdef HAVE_GETHOSTBYNAME_R
- int r;
+#if defined( HAVE_GETHOSTBYNAME_R )
+
+# define NEED_SAFE_REALLOC 1
+ int r=-1;
int buflen=BUFSTART;
+ *buf = NULL;
+ for(;buflen<BUFMAX;) {
+ if (safe_realloc( buf, buflen )==NULL)
+ return r;
+
+#if (GETHOSTBYNAME_R_NARGS < 6)
+ *result=gethostbyname_r( name, resbuf, *buf, buflen, herrno_ptr );
+ r = (*result == NULL) ? -1 : 0;
+#else
+ r = gethostbyname_r( name, resbuf, *buf,
+ buflen, result, herrno_ptr );
+#endif
+
+ Debug( LDAP_DEBUG_TRACE, "ldap_pvt_gethostbyname_a: host=%s, r=%d\n",
+ name, r, 0 );
- if (safe_realloc( buf, buflen)) {
- for(;buflen<BUFMAX;) {
- r = gethostbyname_r( name, resbuf, *buf,
- buflen, result, herrno_ptr );
#ifdef NETDB_INTERNAL
- if ((r<0) &&
- (*herrno_ptr==NETDB_INTERNAL) &&
- (errno==ERANGE))
- {
- if (safe_realloc( buf, buflen*=2 )) {
- continue;
- }
- }
+ if ((r<0) &&
+ (*herrno_ptr==NETDB_INTERNAL) &&
+ (errno==ERANGE))
+ {
+ buflen*=2;
+ continue;
+ }
#endif
- return r;
- }
+ return r;
}
-
-#else /* gethostbyname() */
+ return -1;
+#elif defined( LDAP_R_COMPILE )
+# define NEED_COPY_HOSTENT
+ struct hostent *he;
+ int retval;
+ *buf = NULL;
+
+ LDAP_MUTEX_LOCK( &ldap_int_resolv_mutex );
+
+ he = gethostbyname( name );
+
+ if (he==NULL) {
+ *herrno_ptr = h_errno;
+ retval = -1;
+ } else if (copy_hostent( resbuf, buf, he )<0) {
+ *herrno_ptr = -1;
+ retval = -1;
+ } else {
+ *result = resbuf;
+ retval = 0;
+ }
+
+ LDAP_MUTEX_UNLOCK( &ldap_int_resolv_mutex );
+
+ return retval;
+#else
+ *buf = NULL;
*result = gethostbyname( name );
if (*result!=NULL) {
}
*herrno_ptr = h_errno;
+
+ return -1;
#endif
+}
- return -1;
+#if !defined( HAVE_GETNAMEINFO ) && !defined( HAVE_HSTRERROR )
+static const char *
+hp_strerror( int err )
+{
+ switch (err) {
+ case HOST_NOT_FOUND: return _("Host not found (authoritative)");
+ case TRY_AGAIN: return _("Host not found (server fail?)");
+ case NO_RECOVERY: return _("Non-recoverable failure");
+ case NO_DATA: return _("No data of requested type");
+#ifdef NETDB_INTERNAL
+ case NETDB_INTERNAL: return STRERROR( errno );
+#endif
+ }
+ return _("Unknown resolver error");
+}
+#endif
+
+int ldap_pvt_get_hname(
+ const struct sockaddr *sa,
+ int len,
+ char *name,
+ int namelen,
+ char **err )
+{
+ int rc;
+#if defined( HAVE_GETNAMEINFO )
+
+ LDAP_MUTEX_LOCK( &ldap_int_resolv_mutex );
+ rc = getnameinfo( sa, len, name, namelen, NULL, 0, 0 );
+ LDAP_MUTEX_UNLOCK( &ldap_int_resolv_mutex );
+ if ( rc ) *err = (char *)AC_GAI_STRERROR( rc );
+ return rc;
+
+#else /* !HAVE_GETNAMEINFO */
+ char *addr;
+ int alen;
+ struct hostent *hp = NULL;
+#ifdef HAVE_GETHOSTBYADDR_R
+ struct hostent hb;
+ int buflen=BUFSTART, h_errno;
+ char *buf=NULL;
+#endif
+
+#ifdef LDAP_PF_INET6
+ if (sa->sa_family == AF_INET6) {
+ struct sockaddr_in6 *sin = (struct sockaddr_in6 *)sa;
+ addr = (char *)&sin->sin6_addr;
+ alen = sizeof(sin->sin6_addr);
+ } else
+#endif
+ if (sa->sa_family == AF_INET) {
+ struct sockaddr_in *sin = (struct sockaddr_in *)sa;
+ addr = (char *)&sin->sin_addr;
+ alen = sizeof(sin->sin_addr);
+ } else {
+ rc = NO_RECOVERY;
+ *err = (char *)HSTRERROR( rc );
+ return rc;
+ }
+#if defined( HAVE_GETHOSTBYADDR_R )
+ for(;buflen<BUFMAX;) {
+ if (safe_realloc( &buf, buflen )==NULL) {
+ *err = (char *)STRERROR( ENOMEM );
+ return ENOMEM;
+ }
+#if (GETHOSTBYADDR_R_NARGS < 8)
+ hp=gethostbyaddr_r( addr, alen, sa->sa_family,
+ &hb, buf, buflen, &h_errno );
+ rc = (hp == NULL) ? -1 : 0;
+#else
+ rc = gethostbyaddr_r( addr, alen, sa->sa_family,
+ &hb, buf, buflen,
+ &hp, &h_errno );
+#endif
+#ifdef NETDB_INTERNAL
+ if ((rc<0) &&
+ (h_errno==NETDB_INTERNAL) &&
+ (errno==ERANGE))
+ {
+ buflen*=2;
+ continue;
+ }
+#endif
+ break;
+ }
+ if (hp) {
+ strncpy( name, hp->h_name, namelen );
+ } else {
+ *err = (char *)HSTRERROR( h_errno );
+ }
+ LDAP_FREE(buf);
+#else /* HAVE_GETHOSTBYADDR_R */
+
+ LDAP_MUTEX_LOCK( &ldap_int_resolv_mutex );
+ hp = gethostbyaddr( addr, alen, sa->sa_family );
+ if (hp) {
+ strncpy( name, hp->h_name, namelen );
+ rc = 0;
+ } else {
+ rc = h_errno;
+ *err = (char *)HSTRERROR( h_errno );
+ }
+ LDAP_MUTEX_UNLOCK( &ldap_int_resolv_mutex );
+
+#endif /* !HAVE_GETHOSTBYADDR_R */
+ return rc;
+#endif /* !HAVE_GETNAMEINFO */
}
-
-int ldap_int_gethostbyaddr_a(
+
+int ldap_pvt_gethostbyaddr_a(
const char *addr,
int len,
int type,
struct hostent **result,
int *herrno_ptr )
{
-#ifdef HAVE_GETHOSTBYADDR_R
- int r;
+#if defined( HAVE_GETHOSTBYADDR_R )
+
+# undef NEED_SAFE_REALLOC
+# define NEED_SAFE_REALLOC
+ int r=-1;
int buflen=BUFSTART;
- if (safe_realloc( buf, buflen)) {
- for(;buflen<BUFMAX;) {
- r = gethostbyaddr_r( addr, len, type,
- resbuf, *buf, buflen,
- result, herrno_ptr );
-#ifdef NETDB_INTERNAL
- if ((r<0) &&
- (*herrno_ptr==NETDB_INTERNAL) &&
- (errno==ERANGE))
- {
- if (safe_realloc( buf, buflen*=2))
- continue;
- }
-#endif
+ *buf = NULL;
+ for(;buflen<BUFMAX;) {
+ if (safe_realloc( buf, buflen )==NULL)
return r;
+#if (GETHOSTBYADDR_R_NARGS < 8)
+ *result=gethostbyaddr_r( addr, len, type,
+ resbuf, *buf, buflen, herrno_ptr );
+ r = (*result == NULL) ? -1 : 0;
+#else
+ r = gethostbyaddr_r( addr, len, type,
+ resbuf, *buf, buflen,
+ result, herrno_ptr );
+#endif
+
+#ifdef NETDB_INTERNAL
+ if ((r<0) &&
+ (*herrno_ptr==NETDB_INTERNAL) &&
+ (errno==ERANGE))
+ {
+ buflen*=2;
+ continue;
}
+#endif
+ return r;
}
+ return -1;
+#elif defined( LDAP_R_COMPILE )
+# undef NEED_COPY_HOSTENT
+# define NEED_COPY_HOSTENT
+ struct hostent *he;
+ int retval;
+ *buf = NULL;
+
+ LDAP_MUTEX_LOCK( &ldap_int_resolv_mutex );
+ he = gethostbyaddr( addr, len, type );
+
+ if (he==NULL) {
+ *herrno_ptr = h_errno;
+ retval = -1;
+ } else if (copy_hostent( resbuf, buf, he )<0) {
+ *herrno_ptr = -1;
+ retval = -1;
+ } else {
+ *result = resbuf;
+ retval = 0;
+ }
+ LDAP_MUTEX_UNLOCK( &ldap_int_resolv_mutex );
+
+ return retval;
#else /* gethostbyaddr() */
+ *buf = NULL;
*result = gethostbyaddr( addr, len, type );
if (*result!=NULL) {
return 0;
}
+ return -1;
#endif
+}
+/*
+ * ldap_int_utils_init() should be called before any other function.
+ */
+
+void ldap_int_utils_init( void )
+{
+ static int done=0;
+ if (done)
+ return;
+ done=1;
+
+#ifdef LDAP_R_COMPILE
+#if !defined( USE_CTIME_R ) && !defined( HAVE_REENTRANT_FUNCTIONS )
+ ldap_pvt_thread_mutex_init( &ldap_int_ctime_mutex );
+#endif
+#if !defined( USE_GMTIME_R ) && !defined( USE_LOCALTIME_R )
+ ldap_pvt_thread_mutex_init( &ldap_int_gmtime_mutex );
+#endif
+ ldap_pvt_thread_mutex_init( &ldap_int_resolv_mutex );
+
+ ldap_pvt_thread_mutex_init( &ldap_int_hostname_mutex );
+
+ ldap_pvt_thread_mutex_init( &ldap_int_gettime_mutex );
+
+#ifdef HAVE_CYRUS_SASL
+ ldap_pvt_thread_mutex_init( &ldap_int_sasl_mutex );
+#endif
+#ifdef HAVE_GSSAPI
+ ldap_pvt_thread_mutex_init( &ldap_int_gssapi_mutex );
+#endif
+#endif
+ /* call other module init functions here... */
+}
+
+#if defined( NEED_COPY_HOSTENT )
+# undef NEED_SAFE_REALLOC
+#define NEED_SAFE_REALLOC
+
+static char *cpy_aliases(
+ char ***tgtio,
+ char *buf,
+ char **src )
+{
+ int len;
+ char **tgt=*tgtio;
+ for( ; (*src) ; src++ ) {
+ len = strlen( *src ) + 1;
+ AC_MEMCPY( buf, *src, len );
+ *tgt++=buf;
+ buf+=len;
+ }
+ *tgtio=tgt;
+ return buf;
+}
+
+static char *cpy_addresses(
+ char ***tgtio,
+ char *buf,
+ char **src,
+ int len )
+{
+ char **tgt=*tgtio;
+ for( ; (*src) ; src++ ) {
+ AC_MEMCPY( buf, *src, len );
+ *tgt++=buf;
+ buf+=len;
+ }
+ *tgtio=tgt;
+ return buf;
+}
+
+static int copy_hostent(
+ struct hostent *res,
+ char **buf,
+ struct hostent * src )
+{
+ char **p;
+ char **tp;
+ char *tbuf;
+ int name_len;
+ int n_alias=0;
+ int total_alias_len=0;
+ int n_addr=0;
+ int total_addr_len=0;
+ int total_len;
+
+ /* calculate the size needed for the buffer */
+ name_len = strlen( src->h_name ) + 1;
+
+ if( src->h_aliases != NULL ) {
+ for( p = src->h_aliases; (*p) != NULL; p++ ) {
+ total_alias_len += strlen( *p ) + 1;
+ n_alias++;
+ }
+ }
+
+ if( src->h_addr_list != NULL ) {
+ for( p = src->h_addr_list; (*p) != NULL; p++ ) {
+ n_addr++;
+ }
+ total_addr_len = n_addr * src->h_length;
+ }
+
+ total_len = (n_alias + n_addr + 2) * sizeof( char * ) +
+ total_addr_len + total_alias_len + name_len;
+
+ if (safe_realloc( buf, total_len )) {
+ tp = (char **) *buf;
+ tbuf = *buf + (n_alias + n_addr + 2) * sizeof( char * );
+ AC_MEMCPY( res, src, sizeof( struct hostent ) );
+ /* first the name... */
+ AC_MEMCPY( tbuf, src->h_name, name_len );
+ res->h_name = tbuf; tbuf+=name_len;
+ /* now the aliases */
+ res->h_aliases = tp;
+ if ( src->h_aliases != NULL ) {
+ tbuf = cpy_aliases( &tp, tbuf, src->h_aliases );
+ }
+ *tp++=NULL;
+ /* finally the addresses */
+ res->h_addr_list = tp;
+ if ( src->h_addr_list != NULL ) {
+ tbuf = cpy_addresses( &tp, tbuf, src->h_addr_list, src->h_length );
+ }
+ *tp++=NULL;
+ return 0;
+ }
return -1;
}
+#endif
+
+#if defined( NEED_SAFE_REALLOC )
+static char *safe_realloc( char **buf, int len )
+{
+ char *tmpbuf;
+ tmpbuf = LDAP_REALLOC( *buf, len );
+ if (tmpbuf) {
+ *buf=tmpbuf;
+ }
+ return tmpbuf;
+}
+#endif
+
+char * ldap_pvt_get_fqdn( char *name )
+{
+ char *fqdn, *ha_buf;
+ char hostbuf[MAXHOSTNAMELEN+1];
+ struct hostent *hp, he_buf;
+ int rc, local_h_errno;
+
+ if( name == NULL ) {
+ if( gethostname( hostbuf, MAXHOSTNAMELEN ) == 0 ) {
+ hostbuf[MAXHOSTNAMELEN] = '\0';
+ name = hostbuf;
+ } else {
+ name = "localhost";
+ }
+ }
+
+ rc = ldap_pvt_gethostbyname_a( name,
+ &he_buf, &ha_buf, &hp, &local_h_errno );
+
+ if( rc < 0 || hp == NULL || hp->h_name == NULL ) {
+ fqdn = LDAP_STRDUP( name );
+ } else {
+ fqdn = LDAP_STRDUP( hp->h_name );
+ }
+
+ LDAP_FREE( ha_buf );
+ return fqdn;
+}
+
+#if ( defined( HAVE_GETADDRINFO ) || defined( HAVE_GETNAMEINFO ) ) \
+ && !defined( HAVE_GAI_STRERROR )
+char *ldap_pvt_gai_strerror (int code) {
+ static struct {
+ int code;
+ const char *msg;
+ } values[] = {
+#ifdef EAI_ADDRFAMILY
+ { EAI_ADDRFAMILY, N_("Address family for hostname not supported") },
+#endif
+ { EAI_AGAIN, N_("Temporary failure in name resolution") },
+ { EAI_BADFLAGS, N_("Bad value for ai_flags") },
+ { EAI_FAIL, N_("Non-recoverable failure in name resolution") },
+ { EAI_FAMILY, N_("ai_family not supported") },
+ { EAI_MEMORY, N_("Memory allocation failure") },
+#ifdef EAI_NODATA
+ { EAI_NODATA, N_("No address associated with hostname") },
+#endif
+ { EAI_NONAME, N_("Name or service not known") },
+ { EAI_SERVICE, N_("Servname not supported for ai_socktype") },
+ { EAI_SOCKTYPE, N_("ai_socktype not supported") },
+#ifdef EAI_SYSTEM
+ { EAI_SYSTEM, N_("System error") },
+#endif
+ { 0, NULL }
+ };
+
+ int i;
+
+ for ( i = 0; values[i].msg != NULL; i++ ) {
+ if ( values[i].code == code ) {
+ return (char *) _(values[i].msg);
+ }
+ }
+
+ return _("Unknown error");
+}
+#endif
projects / openldap / blobdiff