1 files changed, 34 insertions, 132 deletions

diff --git a/contrib/bind9/lib/isc/unix/ifiter_ioctl.c b/contrib/bind9/lib/isc/unix/ifiter_ioctl.c
index ce63de7..a9d29bc 100644
--- a/contrib/bind9/lib/isc/unix/ifiter_ioctl.c
+++ b/contrib/bind9/lib/isc/unix/ifiter_ioctl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2004-2009  Internet Systems Consortium, Inc. ("ISC")
  * Copyright (C) 1999-2003  Internet Software Consortium.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: ifiter_ioctl.c,v 1.44.18.13 2007/08/31 23:46:25 tbox Exp $ */
+/* $Id: ifiter_ioctl.c,v 1.60.120.2 2009/01/18 23:47:41 tbox Exp $ */
 
 /*! \file
  * \brief
@@ -50,9 +50,6 @@
 #define IFITER_MAGIC		ISC_MAGIC('I', 'F', 'I', 'T')
 #define VALID_IFITER(t)		ISC_MAGIC_VALID(t, IFITER_MAGIC)
 
-#define ISC_IF_INET6_SZ \
-    sizeof("00000000000000000000000000000001 01 80 10 80 XXXXXXloXXXXXXXX\n")
-
 struct isc_interfaceiter {
 	unsigned int		magic;		/* Magic number. */
 	isc_mem_t		*mctx;
@@ -82,7 +79,6 @@ struct isc_interfaceiter {
 	FILE *			proc;
 	char			entry[ISC_IF_INET6_SZ];
 	isc_result_t		valid;
-	isc_boolean_t		first;
 #endif
 	isc_interface_t		current;	/* Current interface data. */
 	isc_result_t		result;		/* Last result code. */
@@ -104,7 +100,7 @@ struct isc_interfaceiter {
 #ifdef __linux
 #ifndef IF_NAMESIZE
 # ifdef IFNAMSIZ
-#  define IF_NAMESIZE  IFNAMSIZ  
+#  define IF_NAMESIZE  IFNAMSIZ
 # else
 #  define IF_NAMESIZE 16
 # endif
@@ -126,7 +122,7 @@ getbuf4(isc_interfaceiter_t *iter) {
 		iter->ifc.ifc_len = iter->bufsize;
 		iter->ifc.ifc_buf = iter->buf;
 		/*
-		 * Ignore the HP/UX warning about "interger overflow during
+		 * Ignore the HP/UX warning about "integer overflow during
 		 * conversion".  It comes from its own macro definition,
 		 * and is really hard to shut up.
 		 */
@@ -206,7 +202,7 @@ getbuf6(isc_interfaceiter_t *iter) {
 		iter->lifc.lifc_len = iter->bufsize6;
 		iter->lifc.lifc_buf = iter->buf6;
 		/*
-		 * Ignore the HP/UX warning about "interger overflow during
+		 * Ignore the HP/UX warning about "integer overflow during
 		 * conversion".  It comes from its own macro definition,
 		 * and is really hard to shut up.
 		 */
@@ -372,7 +368,6 @@ isc_interfaceiter_create(isc_mem_t *mctx, isc_interfaceiter_t **iterp) {
 #ifdef __linux
 	iter->proc = fopen("/proc/net/if_inet6", "r");
 	iter->valid = ISC_R_FAILURE;
-	iter->first = ISC_FALSE;
 #endif
 	iter->result = ISC_R_FAILURE;
 
@@ -394,7 +389,7 @@ isc_interfaceiter_create(isc_mem_t *mctx, isc_interfaceiter_t **iterp) {
 		(void) close(iter->socket6);
   socket6_failure:
 #endif
- 
+
 	isc_mem_put(mctx, iter, sizeof(*iter));
 	return (result);
 }
@@ -422,89 +417,6 @@ internal_current_clusteralias(isc_interfaceiter_t *iter) {
 }
 #endif
 
-#ifdef __linux
-static isc_result_t
-linux_if_inet6_next(isc_interfaceiter_t *iter) {
-	if (iter->proc != NULL &&
-	    fgets(iter->entry, sizeof(iter->entry), iter->proc) != NULL)
-		iter->valid = ISC_R_SUCCESS;
-	else
-		iter->valid = ISC_R_NOMORE;
-	return (iter->valid);
-}
-
-static void
-linux_if_inet6_first(isc_interfaceiter_t *iter) {
-	if (iter->proc != NULL) {
-		rewind(iter->proc);
-		(void)linux_if_inet6_next(iter);
-	} else
-		iter->valid = ISC_R_NOMORE;
-	iter->first = ISC_FALSE;
-}
-
-static isc_result_t
-linux_if_inet6_current(isc_interfaceiter_t *iter) {
-	char address[33];
-	char name[IF_NAMESIZE+1];
-	struct in6_addr addr6;
-	int ifindex, prefix, flag3, flag4;
-	int res;
-	unsigned int i;
-
-	if (iter->valid != ISC_R_SUCCESS)
-		return (iter->valid);
-	if (iter->proc == NULL) {
-		isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL,
-			      ISC_LOGMODULE_INTERFACE, ISC_LOG_ERROR,
-			      "/proc/net/if_inet6:iter->proc == NULL");
-		return (ISC_R_FAILURE);
-	}
-
-	res = sscanf(iter->entry, "%32[a-f0-9] %x %x %x %x %16s\n",
-		     address, &ifindex, &prefix, &flag3, &flag4, name);
-	if (res != 6) {
-		isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL,
-			      ISC_LOGMODULE_INTERFACE, ISC_LOG_ERROR,
-			      "/proc/net/if_inet6:sscanf() -> %d (expected 6)",
-			      res);
-		return (ISC_R_FAILURE);
-	}
-	if (strlen(address) != 32) {
-		isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL,
-			      ISC_LOGMODULE_INTERFACE, ISC_LOG_ERROR,
-			      "/proc/net/if_inet6:strlen(%s) != 32", address);
-		return (ISC_R_FAILURE);
-	}
-	for (i = 0; i < 16; i++) {
-		unsigned char byte;
-		static const char hex[] = "0123456789abcdef";
-		byte = ((index(hex, address[i * 2]) - hex) << 4) |
-		       (index(hex, address[i * 2 + 1]) - hex);
-		addr6.s6_addr[i] = byte;
-	}
-	iter->current.af = AF_INET6;
-	iter->current.flags = INTERFACE_F_UP;
-	isc_netaddr_fromin6(&iter->current.address, &addr6);
-	if (isc_netaddr_islinklocal(&iter->current.address)) {
-		isc_netaddr_setzone(&iter->current.address,
-				    (isc_uint32_t)ifindex);
-	}
-	for (i = 0; i < 16; i++) {
-		if (prefix > 8) {
-			addr6.s6_addr[i] = 0xff;
-			prefix -= 8;
-		} else {
-			addr6.s6_addr[i] = (0xff << (8 - prefix)) & 0xff;
-			prefix = 0;
-		}
-	}
-	isc_netaddr_fromin6(&iter->current.netmask, &addr6);
-	strncpy(iter->current.name, name, sizeof(iter->current.name));
-	return (ISC_R_SUCCESS);
-}
-#endif
-
 /*
  * Get information about the current interface to iter->current.
  * If successful, return ISC_R_SUCCESS.
@@ -525,23 +437,19 @@ internal_current4(isc_interfaceiter_t *iter) {
 	char sabuf[256];
 #endif
 	int i, bits, prefixlen;
-#ifdef __linux
-	isc_result_t result;
-#endif
 
 	REQUIRE(VALID_IFITER(iter));
-	REQUIRE(iter->ifc.ifc_len == 0 ||
-		iter->pos < (unsigned int) iter->ifc.ifc_len);
 
+	if (iter->ifc.ifc_len == 0 ||
+	    iter->pos == (unsigned int)iter->ifc.ifc_len) {
 #ifdef __linux
-	result = linux_if_inet6_current(iter);
-	if (result != ISC_R_NOMORE)
-		return (result);
-	iter->first = ISC_TRUE;
+		return (linux_if_inet6_current(iter));
+#else
+		return (ISC_R_NOMORE);
 #endif
+	}
 
-	if (iter->ifc.ifc_len == 0)
-		return (ISC_R_NOMORE);
+	INSIST( iter->pos < (unsigned int) iter->ifc.ifc_len);
 
 	ifrp = (struct ifreq *)((char *) iter->ifc.ifc_req + iter->pos);
 
@@ -588,7 +496,7 @@ internal_current4(isc_interfaceiter_t *iter) {
 	iter->current.flags = 0;
 
 	/*
-	 * Ignore the HP/UX warning about "interger overflow during
+	 * Ignore the HP/UX warning about "integer overflow during
 	 * conversion.  It comes from its own macro definition,
 	 * and is really hard to shut up.
 	 */
@@ -666,7 +574,7 @@ internal_current4(isc_interfaceiter_t *iter) {
 	 */
 	if ((iter->current.flags & INTERFACE_F_POINTTOPOINT) != 0) {
 		/*
-		 * Ignore the HP/UX warning about "interger overflow during
+		 * Ignore the HP/UX warning about "integer overflow during
 		 * conversion.  It comes from its own macro definition,
 		 * and is really hard to shut up.
 		 */
@@ -693,7 +601,7 @@ internal_current4(isc_interfaceiter_t *iter) {
 	memset(&ifreq, 0, sizeof(ifreq));
 	memcpy(&ifreq, ifrp, sizeof(ifreq));
 	/*
-	 * Ignore the HP/UX warning about "interger overflow during
+	 * Ignore the HP/UX warning about "integer overflow during
 	 * conversion.  It comes from its own macro definition,
 	 * and is really hard to shut up.
 	 */
@@ -776,7 +684,7 @@ internal_current6(isc_interfaceiter_t *iter) {
 		fd = iter->socket;
 
 	/*
-	 * Ignore the HP/UX warning about "interger overflow during
+	 * Ignore the HP/UX warning about "integer overflow during
 	 * conversion.  It comes from its own macro definition,
 	 * and is really hard to shut up.
 	 */
@@ -805,7 +713,7 @@ internal_current6(isc_interfaceiter_t *iter) {
 	 */
 	if ((iter->current.flags & INTERFACE_F_POINTTOPOINT) != 0) {
 		/*
-		 * Ignore the HP/UX warning about "interger overflow during
+		 * Ignore the HP/UX warning about "integer overflow during
 		 * conversion.  It comes from its own macro definition,
 		 * and is really hard to shut up.
 		 */
@@ -855,7 +763,7 @@ internal_current6(isc_interfaceiter_t *iter) {
 #endif
 
 	/*
-	 * Ignore the HP/UX warning about "interger overflow during
+	 * Ignore the HP/UX warning about "integer overflow during
 	 * conversion.  It comes from its own macro definition,
 	 * and is really hard to shut up.
 	 */
@@ -905,31 +813,25 @@ internal_next4(isc_interfaceiter_t *iter) {
 	struct ifreq *ifrp;
 #endif
 
-	REQUIRE(iter->ifc.ifc_len == 0 ||
-	        iter->pos < (unsigned int) iter->ifc.ifc_len);
-
-#ifdef __linux
-	if (linux_if_inet6_next(iter) == ISC_R_SUCCESS)
-		return (ISC_R_SUCCESS);
-	if (!iter->first)
-		return (ISC_R_SUCCESS);
-#endif
-
-	if (iter->ifc.ifc_len == 0)
-		return (ISC_R_NOMORE);
-
+	if (iter->pos < (unsigned int) iter->ifc.ifc_len) {
 #ifdef ISC_PLATFORM_HAVESALEN
-	ifrp = (struct ifreq *)((char *) iter->ifc.ifc_req + iter->pos);
+		ifrp = (struct ifreq *)((char *) iter->ifc.ifc_req + iter->pos);
 
-	if (ifrp->ifr_addr.sa_len > sizeof(struct sockaddr))
-		iter->pos += sizeof(ifrp->ifr_name) + ifrp->ifr_addr.sa_len;
-	else
+		if (ifrp->ifr_addr.sa_len > sizeof(struct sockaddr))
+			iter->pos += sizeof(ifrp->ifr_name) +
+				     ifrp->ifr_addr.sa_len;
+		else
 #endif
-		iter->pos += sizeof(struct ifreq);
+			iter->pos += sizeof(struct ifreq);
 
-	if (iter->pos >= (unsigned int) iter->ifc.ifc_len)
+	} else {
+		INSIST(iter->pos == (unsigned int) iter->ifc.ifc_len);
+#ifdef __linux
+		return (linux_if_inet6_next(iter));
+#else
 		return (ISC_R_NOMORE);
-
+#endif
+	}
 	return (ISC_R_SUCCESS);
 }
 
@@ -939,7 +841,7 @@ internal_next6(isc_interfaceiter_t *iter) {
 #ifdef ISC_PLATFORM_HAVESALEN
 	struct LIFREQ *ifrp;
 #endif
-	
+
 	if (iter->result6 != ISC_R_SUCCESS && iter->result6 != ISC_R_IGNORE)
 		return (iter->result6);