/* $OpenLDAP$ */
-/*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2004 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 might not 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 <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
+#include <ac/unistd.h>
#include "ldap-int.h"
-#if defined( LDAP_R_COMPILE )
-# include <ldap_pvt_thread.h>
-#else
-# undef HAVE_REENTRANT_FUNCTIONS
+#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
+#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;
+
#if (defined( HAVE_CTIME_R ) || defined( HAVE_REENTRANT_FUNCTIONS)) \
&& defined( CTIME_R_NARGS )
-# define USE_CTIME_R
-#endif
+# define USE_CTIME_R
+# else
+ static ldap_pvt_thread_mutex_t ldap_int_ctime_mutex;
+# endif
-#if defined(HAVE_GETHOSTBYNAME_R) && \
- (GETHOSTBYNAME_R_NARGS > 6 || GETHOSTBYNAME_R_NARGS < 5)
+# 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 > 8 || GETHOSTBYADDR_R_NARGS < 7)
+# 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
-
-#ifdef LDAP_R_COMPILE
-# ifndef USE_CTIME_R
- static ldap_pvt_thread_mutex_t ldap_int_ctime_mutex;
-# endif
-# ifndef HAVE_GETHOSTBYNAME_R
- static ldap_pvt_thread_mutex_t ldap_int_gethostbyname_mutex;
-# endif
-# ifndef HAVE_GETHOSTBYADDR_R
- static ldap_pvt_thread_mutex_t ldap_int_gethostbyaddr_mutex;
-# endif
-# ifdef HAVE_RES_QUERY
- ldap_pvt_thread_mutex_t ldap_int_resolv_mutex;
# endif
#endif /* LDAP_R_COMPILE */
# endif
#else
+
# ifdef LDAP_R_COMPILE
ldap_pvt_thread_mutex_lock( &ldap_int_ctime_mutex );
# endif
- memcpy( buf, ctime(tp), 26 );
+
+ AC_MEMCPY( buf, ctime(tp), 26 );
+
# ifdef LDAP_R_COMPILE
ldap_pvt_thread_mutex_unlock( &ldap_int_ctime_mutex );
# endif
+
return buf;
#endif
}
-#define BUFSTART 1024
-#define BUFMAX (32*1024)
+#define BUFSTART (1024-32)
+#define BUFMAX (32*1024-32)
static char *safe_realloc( char **buf, int len );
-static int copy_hostent( struct hostent *res, char **buf, struct hostent * src );
+
+#if !defined(HAVE_GETHOSTBYNAME_R) && defined(LDAP_R_COMPILE)
+static int copy_hostent( struct hostent *res,
+ char **buf, struct hostent * src );
+#endif
int ldap_pvt_gethostbyname_a(
const char *name,
return r;
#if (GETHOSTBYNAME_R_NARGS < 6)
- r = ((*result=gethostbyname_r( name, resbuf, *buf,
- buflen, herrno_ptr ))== NULL) ?
- -1 : 0;
+ *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 );
# define NEED_COPY_HOSTENT
struct hostent *he;
int retval;
+ *buf = NULL;
- ldap_pvt_thread_mutex_lock( &ldap_int_gethostbyname_mutex );
+ ldap_pvt_thread_mutex_lock( &ldap_int_resolv_mutex );
he = gethostbyname( name );
retval = 0;
}
- ldap_pvt_thread_mutex_unlock( &ldap_int_gethostbyname_mutex );
+ ldap_pvt_thread_mutex_unlock( &ldap_int_resolv_mutex );
return retval;
#else
+ *buf = NULL;
*result = gethostbyname( name );
if (*result!=NULL) {
return -1;
#endif
}
-
+
+#ifndef GETNAMEINFO
+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 )
+
+#if defined( LDAP_R_COMPILE )
+ ldap_pvt_thread_mutex_lock( &ldap_int_resolv_mutex );
+#endif
+ rc = getnameinfo( sa, len, name, namelen, NULL, 0, 0 );
+#if defined( LDAP_R_COMPILE )
+ ldap_pvt_thread_mutex_unlock( &ldap_int_resolv_mutex );
+#endif
+ 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 *)hp_strerror( 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 *)hp_strerror( h_errno );
+ }
+ LDAP_FREE(buf);
+#else /* HAVE_GETHOSTBYADDR_R */
+
+#if defined( LDAP_R_COMPILE )
+ ldap_pvt_thread_mutex_lock( &ldap_int_resolv_mutex );
+#endif
+ hp = gethostbyaddr( addr, alen, sa->sa_family );
+ if (hp) {
+ strncpy( name, hp->h_name, namelen );
+ rc = 0;
+ } else {
+ rc = h_errno;
+ *err = (char *)hp_strerror( h_errno );
+ }
+#if defined( LDAP_R_COMPILE )
+ ldap_pvt_thread_mutex_unlock( &ldap_int_resolv_mutex );
+#endif
+
+#endif /* !HAVE_GETHOSTBYADDR_R */
+ return rc;
+#endif /* !HAVE_GETNAMEINFO */
+}
+
int ldap_pvt_gethostbyaddr_a(
const char *addr,
int len,
if (safe_realloc( buf, buflen )==NULL)
return r;
#if (GETHOSTBYADDR_R_NARGS < 8)
- r = ((*result=gethostbyaddr_r( addr, len, type,
- resbuf, *buf, buflen,
- herrno_ptr )) == NULL) ?
- -1 : 0;
+ *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,
# define NEED_COPY_HOSTENT
struct hostent *he;
int retval;
+ *buf = NULL;
- ldap_pvt_thread_mutex_lock( &ldap_int_gethostbyaddr_mutex );
+ ldap_pvt_thread_mutex_lock( &ldap_int_resolv_mutex );
he = gethostbyaddr( addr, len, type );
retval = 0;
}
- ldap_pvt_thread_mutex_unlock( &ldap_int_gethostbyaddr_mutex );
+ ldap_pvt_thread_mutex_unlock( &ldap_int_resolv_mutex );
- return retval;
+ return retval;
+
#else /* gethostbyaddr() */
+ *buf = NULL;
*result = gethostbyaddr( addr, len, type );
if (*result!=NULL) {
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
+ ldap_pvt_thread_mutex_init( &ldap_int_resolv_mutex );
-#if !defined( HAVE_GETHOSTBYNAME_R )
- ldap_pvt_thread_mutex_init( &ldap_int_gethostbyname_mutex );
-#endif
-
-#if !defined( HAVE_GETHOSTBYADDR_R )
- ldap_pvt_thread_mutex_init( &ldap_int_gethostbyaddr_mutex );
+#ifdef HAVE_CYRUS_SASL
+ ldap_pvt_thread_mutex_init( &ldap_int_sasl_mutex );
#endif
-
-#ifdef HAVE_RES_QUERY
- ldap_pvt_thread_mutex_init( &ldap_int_resolv_mutex );
#endif
/* call other module init functions here... */
-#endif
}
#if defined( NEED_COPY_HOSTENT )
# undef NEED_SAFE_REALLOC
#define NEED_SAFE_REALLOC
-static char *cpy_aliases( char ***tgtio, char *buf, char **src )
+static char *cpy_aliases(
+ char ***tgtio,
+ char *buf,
+ char **src )
{
int len;
char **tgt=*tgtio;
for( ; (*src) ; src++ ) {
len = strlen( *src ) + 1;
- memcpy( buf, *src, len );
+ AC_MEMCPY( buf, *src, len );
*tgt++=buf;
buf+=len;
}
return buf;
}
-static char *cpy_addresses( char ***tgtio, char *buf, char **src, int len )
+static char *cpy_addresses(
+ char ***tgtio,
+ char *buf,
+ char **src,
+ int len )
{
char **tgt=*tgtio;
for( ; (*src) ; src++ ) {
- memcpy( buf, *src, len );
+ AC_MEMCPY( buf, *src, len );
*tgt++=buf;
buf+=len;
}
return buf;
}
-static int copy_hostent( struct hostent *res, char **buf, struct hostent * src )
+static int copy_hostent(
+ struct hostent *res,
+ char **buf,
+ struct hostent * src )
{
char **p;
char **tp;
if (safe_realloc( buf, total_len )) {
tp = (char **) *buf;
tbuf = *buf + (n_alias + n_addr + 2) * sizeof( char * );
- memcpy( res, src, sizeof( struct hostent ) );
+ AC_MEMCPY( res, src, sizeof( struct hostent ) );
/* first the name... */
- memcpy( tbuf, src->h_name, name_len );
+ AC_MEMCPY( tbuf, src->h_name, name_len );
res->h_name = tbuf; tbuf+=name_len;
/* now the aliases */
res->h_aliases = tp;
}
#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") },
+ { EAI_SYSTEM, N_("System error") },
+ { 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
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