vendor/unbound/1.9.2

8 files changed, 117 insertions, 33 deletions

diff --git a/util/alloc.c b/util/alloc.c
index 908b1f42361f..7e9618931ca6 100644
--- a/util/alloc.c
+++ b/util/alloc.c
@@ -376,6 +376,7 @@ void *unbound_stat_malloc(size_t size)
 {
 	void* res;
 	if(size == 0) size = 1;
+	log_assert(size <= SIZE_MAX-16);
 	res = malloc(size+16);
 	if(!res) return NULL;
 	unbound_mem_alloc += size;
@@ -398,6 +399,7 @@ void *unbound_stat_calloc(size_t nmemb, size_t size)
 	if(nmemb != 0 && INT_MAX/nmemb < size)
 		return NULL; /* integer overflow check */
 	s = (nmemb*size==0)?(size_t)1:nmemb*size;
+	log_assert(s <= SIZE_MAX-16);
 	res = calloc(1, s+16);
 	if(!res) return NULL;
 	log_info("stat %p=calloc(%u, %u)", res+16, (unsigned)nmemb, (unsigned)size);
@@ -447,6 +449,7 @@ void *unbound_stat_realloc(void *ptr, size_t size)
 		/* nothing changes */
 		return ptr;
 	}
+	log_assert(size <= SIZE_MAX-16);
 	res = malloc(size+16);
 	if(!res) return NULL;
 	unbound_mem_alloc += size;
@@ -521,7 +524,9 @@ void *unbound_stat_malloc_lite(size_t size, const char* file, int line,
         const char* func)
 {
 	/*  [prefix .. len .. actual data .. suffix] */
-	void* res = malloc(size+lite_pad*2+sizeof(size_t));
+	void* res;
+	log_assert(size <= SIZE_MAX-(lite_pad*2+sizeof(size_t)));
+	res = malloc(size+lite_pad*2+sizeof(size_t));
 	if(!res) return NULL;
 	memmove(res, lite_pre, lite_pad);
 	memmove(res+lite_pad, &size, sizeof(size_t));
@@ -538,6 +543,7 @@ void *unbound_stat_calloc_lite(size_t nmemb, size_t size, const char* file,
 	if(nmemb != 0 && INT_MAX/nmemb < size)
 		return NULL; /* integer overflow check */
 	req = nmemb * size;
+	log_assert(req <= SIZE_MAX-(lite_pad*2+sizeof(size_t)));
 	res = malloc(req+lite_pad*2+sizeof(size_t));
 	if(!res) return NULL;
 	memmove(res, lite_pre, lite_pad);
diff --git a/util/data/msgreply.h b/util/data/msgreply.h
index a455c4d2b374..8d75f9b12f3a 100644
--- a/util/data/msgreply.h
+++ b/util/data/msgreply.h
@@ -157,7 +157,7 @@ struct reply_info {
 	time_t prefetch_ttl;
 
 	/** 
-	 * Reply TTL extended with serve exipred TTL, to limit time to serve
+	 * Reply TTL extended with serve expired TTL, to limit time to serve
 	 * expired message.
 	 */
 	time_t serve_expired_ttl;
diff --git a/util/fptr_wlist.c b/util/fptr_wlist.c
index 02f85e8dc4ab..94d23fa3a32a 100644
--- a/util/fptr_wlist.c
+++ b/util/fptr_wlist.c
@@ -127,6 +127,7 @@ fptr_whitelist_comm_timer(void (*fptr)(void*))
 #endif
 	else if(fptr == &auth_xfer_timer) return 1;
 	else if(fptr == &auth_xfer_probe_timer_callback) return 1;
+	else if(fptr == &auth_xfer_transfer_timer_callback) return 1;
 	return 0;
 }
 
diff --git a/util/iana_ports.inc b/util/iana_ports.inc
index 5ead47f0f665..aa972a67bd5d 100644
--- a/util/iana_ports.inc
+++ b/util/iana_ports.inc
@@ -4768,6 +4768,7 @@
 8088,
 8097,
 8100,
+8111,
 8115,
 8116,
 8118,
@@ -4864,6 +4865,7 @@
 8805,
 8807,
 8808,
+8809,
 8873,
 8880,
 8883,
diff --git a/util/net_help.c b/util/net_help.c
index 2b1be92460ba..13bcdf8085bf 100644
--- a/util/net_help.c
+++ b/util/net_help.c
@@ -802,6 +802,16 @@ void* listen_sslctx_create(char* key, char* pem, char* verifypem)
 		log_crypto_err("could not SSL_CTX_new");
 		return NULL;
 	}
+	if(!key || key[0] == 0) {
+		log_err("error: no tls-service-key file specified");
+		SSL_CTX_free(ctx);
+		return NULL;
+	}
+	if(!pem || pem[0] == 0) {
+		log_err("error: no tls-service-pem file specified");
+		SSL_CTX_free(ctx);
+		return NULL;
+	}
 	if(!listen_sslctx_setup(ctx)) {
 		SSL_CTX_free(ctx);
 		return NULL;
@@ -1235,7 +1245,12 @@ listen_sslctx_delete_ticket_keys(void)
 	struct tls_session_ticket_key *key;
 	if(!ticket_keys) return;
 	for(key = ticket_keys; key->key_name != NULL; key++) {
-		memset(key->key_name, 0xdd, 80); /* wipe key data from memory*/
+		/* wipe key data from memory*/
+#ifdef HAVE_EXPLICIT_BZERO
+		explicit_bzero(key->key_name, 80);
+#else
+		memset(key->key_name, 0xdd, 80);
+#endif
 		free(key->key_name);
 	}
 	free(ticket_keys);
diff --git a/util/netevent.c b/util/netevent.c
index f33e44058b11..9e2ba92b5fdf 100644
--- a/util/netevent.c
+++ b/util/netevent.c
@@ -178,7 +178,7 @@ comm_base_create(int sigs)
 	}
 	ub_comm_base_now(b);
 	ub_get_event_sys(b->eb->base, &evnm, &evsys, &evmethod);
-	verbose(VERB_ALGO, "%s %s user %s method.", evnm, evsys, evmethod);
+	verbose(VERB_ALGO, "%s %s uses %s method.", evnm, evsys, evmethod);
 	return b;
 }
 
@@ -926,6 +926,14 @@ comm_point_tcp_accept_callback(int fd, short event, void* arg)
 	}
 	/* accept incoming connection. */
 	c_hdl = c->tcp_free;
+	/* clear leftover flags from previous use, and then set the
+	 * correct event base for the event structure for libevent */
+	ub_event_free(c_hdl->ev->ev);
+	c_hdl->ev->ev = ub_event_new(c_hdl->ev->base->eb->base, -1, UB_EV_PERSIST | UB_EV_READ | UB_EV_TIMEOUT, comm_point_tcp_handle_callback, c_hdl);
+	if(!c_hdl->ev->ev) {
+		log_warn("could not ub_event_new, dropped tcp");
+		return;
+	}
 	log_assert(fd != -1);
 	(void)fd;
 	new_fd = comm_point_perform_accept(c, &c_hdl->repinfo.addr,
@@ -1184,6 +1192,10 @@ ssl_handle_read(struct comm_point* c)
 				comm_point_listen_for_rw(c, 0, 1);
 				return 1;
 			} else if(want == SSL_ERROR_SYSCALL) {
+#ifdef ECONNRESET
+				if(errno == ECONNRESET && verbosity < 2)
+					return 0; /* silence reset by peer */
+#endif
 				if(errno != 0)
 					log_err("SSL_read syscall: %s",
 						strerror(errno));
@@ -1228,6 +1240,10 @@ ssl_handle_read(struct comm_point* c)
 				comm_point_listen_for_rw(c, 0, 1);
 				return 1;
 			} else if(want == SSL_ERROR_SYSCALL) {
+#ifdef ECONNRESET
+				if(errno == ECONNRESET && verbosity < 2)
+					return 0; /* silence reset by peer */
+#endif
 				if(errno != 0)
 					log_err("SSL_read syscall: %s",
 						strerror(errno));
@@ -1288,13 +1304,17 @@ ssl_handle_write(struct comm_point* c)
 			if(want == SSL_ERROR_ZERO_RETURN) {
 				return 0; /* closed */
 			} else if(want == SSL_ERROR_WANT_READ) {
-				c->ssl_shake_state = comm_ssl_shake_read;
+				c->ssl_shake_state = comm_ssl_shake_hs_read;
 				comm_point_listen_for_rw(c, 1, 0);
 				return 1; /* wait for read condition */
 			} else if(want == SSL_ERROR_WANT_WRITE) {
 				ub_winsock_tcp_wouldblock(c->ev->ev, UB_EV_WRITE);
 				return 1; /* write more later */
 			} else if(want == SSL_ERROR_SYSCALL) {
+#ifdef EPIPE
+				if(errno == EPIPE && verbosity < 2)
+					return 0; /* silence 'broken pipe' */
+#endif
 				if(errno != 0)
 					log_err("SSL_write syscall: %s",
 						strerror(errno));
@@ -1322,13 +1342,17 @@ ssl_handle_write(struct comm_point* c)
 		if(want == SSL_ERROR_ZERO_RETURN) {
 			return 0; /* closed */
 		} else if(want == SSL_ERROR_WANT_READ) {
-			c->ssl_shake_state = comm_ssl_shake_read;
+			c->ssl_shake_state = comm_ssl_shake_hs_read;
 			comm_point_listen_for_rw(c, 1, 0);
 			return 1; /* wait for read condition */
 		} else if(want == SSL_ERROR_WANT_WRITE) {
 			ub_winsock_tcp_wouldblock(c->ev->ev, UB_EV_WRITE);
 			return 1; /* write more later */
 		} else if(want == SSL_ERROR_SYSCALL) {
+#ifdef EPIPE
+			if(errno == EPIPE && verbosity < 2)
+				return 0; /* silence 'broken pipe' */
+#endif
 			if(errno != 0)
 				log_err("SSL_write syscall: %s",
 					strerror(errno));
@@ -1543,7 +1567,6 @@ comm_point_tcp_handle_write(int fd, struct comm_point* c)
 		iov[1].iov_base = sldns_buffer_begin(buffer);
 		iov[1].iov_len = sldns_buffer_limit(buffer);
 		log_assert(iov[0].iov_len > 0);
-		log_assert(iov[1].iov_len > 0);
 		msg.msg_name = &c->repinfo.addr;
 		msg.msg_namelen = c->repinfo.addrlen;
 		msg.msg_iov = iov;
@@ -1610,7 +1633,6 @@ comm_point_tcp_handle_write(int fd, struct comm_point* c)
 		iov[1].iov_base = sldns_buffer_begin(buffer);
 		iov[1].iov_len = sldns_buffer_limit(buffer);
 		log_assert(iov[0].iov_len > 0);
-		log_assert(iov[1].iov_len > 0);
 		r = writev(fd, iov, 2);
 #else /* HAVE_WRITEV */
 		r = send(fd, (void*)(((uint8_t*)&len)+c->tcp_byte_count),
@@ -1624,6 +1646,10 @@ comm_point_tcp_handle_write(int fd, struct comm_point* c)
   #endif
 			if(errno == EINTR || errno == EAGAIN)
 				return 1;
+#ifdef ECONNRESET
+			if(errno == ECONNRESET && verbosity < 2)
+				return 0; /* silence reset by peer */
+#endif
 #  ifdef HAVE_WRITEV
 			log_err_addr("tcp writev", strerror(errno),
 				&c->repinfo.addr, c->repinfo.addrlen);
@@ -1641,6 +1667,8 @@ comm_point_tcp_handle_write(int fd, struct comm_point* c)
 					UB_EV_WRITE);
 				return 1; 
 			}
+			if(WSAGetLastError() == WSAECONNRESET && verbosity < 2)
+				return 0; /* silence reset by peer */
 			log_err_addr("tcp send s",
 				wsa_strerror(WSAGetLastError()),
 				&c->repinfo.addr, c->repinfo.addrlen);
@@ -1664,6 +1692,10 @@ comm_point_tcp_handle_write(int fd, struct comm_point* c)
 #ifndef USE_WINSOCK
 		if(errno == EINTR || errno == EAGAIN)
 			return 1;
+#ifdef ECONNRESET
+		if(errno == ECONNRESET && verbosity < 2)
+			return 0; /* silence reset by peer */
+#endif
 		log_err_addr("tcp send r", strerror(errno),
 			&c->repinfo.addr, c->repinfo.addrlen);
 #else
@@ -1673,6 +1705,8 @@ comm_point_tcp_handle_write(int fd, struct comm_point* c)
 			ub_winsock_tcp_wouldblock(c->ev->ev, UB_EV_WRITE);
 			return 1; 
 		}
+		if(WSAGetLastError() == WSAECONNRESET && verbosity < 2)
+			return 0; /* silence reset by peer */
 		log_err_addr("tcp send r", wsa_strerror(WSAGetLastError()),
 			&c->repinfo.addr, c->repinfo.addrlen);
 #endif
@@ -1738,6 +1772,16 @@ comm_point_tcp_handle_callback(int fd, short event, void* arg)
 	}
 #endif
 
+	if(event&UB_EV_TIMEOUT) {
+		verbose(VERB_QUERY, "tcp took too long, dropped");
+		reclaim_tcp_handler(c);
+		if(!c->tcp_do_close) {
+			fptr_ok(fptr_whitelist_comm_point(c->callback));
+			(void)(*c->callback)(c, c->cb_arg,
+				NETEVENT_TIMEOUT, NULL);
+		}
+		return;
+	}
 	if(event&UB_EV_READ) {
 		int has_tcpq = (c->tcp_req_info != NULL);
 		if(!comm_point_tcp_handle_read(fd, c, 0)) {
@@ -1768,16 +1812,6 @@ comm_point_tcp_handle_callback(int fd, short event, void* arg)
 			tcp_req_info_read_again(fd, c);
 		return;
 	}
-	if(event&UB_EV_TIMEOUT) {
-		verbose(VERB_QUERY, "tcp took too long, dropped");
-		reclaim_tcp_handler(c);
-		if(!c->tcp_do_close) {
-			fptr_ok(fptr_whitelist_comm_point(c->callback));
-			(void)(*c->callback)(c, c->cb_arg,
-				NETEVENT_TIMEOUT, NULL);
-		}
-		return;
-	}
 	log_err("Ignored event %d for tcphdl.", event);
 }
 
@@ -1826,6 +1860,10 @@ ssl_http_read_more(struct comm_point* c)
 			comm_point_listen_for_rw(c, 0, 1);
 			return 1;
 		} else if(want == SSL_ERROR_SYSCALL) {
+#ifdef ECONNRESET
+			if(errno == ECONNRESET && verbosity < 2)
+				return 0; /* silence reset by peer */
+#endif
 			if(errno != 0)
 				log_err("SSL_read syscall: %s",
 					strerror(errno));
@@ -2268,12 +2306,16 @@ ssl_http_write_more(struct comm_point* c)
 		if(want == SSL_ERROR_ZERO_RETURN) {
 			return 0; /* closed */
 		} else if(want == SSL_ERROR_WANT_READ) {
-			c->ssl_shake_state = comm_ssl_shake_read;
+			c->ssl_shake_state = comm_ssl_shake_hs_read;
 			comm_point_listen_for_rw(c, 1, 0);
 			return 1; /* wait for read condition */
 		} else if(want == SSL_ERROR_WANT_WRITE) {
 			return 1; /* write more later */
 		} else if(want == SSL_ERROR_SYSCALL) {
+#ifdef EPIPE
+			if(errno == EPIPE && verbosity < 2)
+				return 0; /* silence 'broken pipe' */
+#endif
 			if(errno != 0)
 				log_err("SSL_write syscall: %s",
 					strerror(errno));
@@ -2382,6 +2424,16 @@ comm_point_http_handle_callback(int fd, short event, void* arg)
 	log_assert(c->type == comm_http);
 	ub_comm_base_now(c->ev->base);
 
+	if(event&UB_EV_TIMEOUT) {
+		verbose(VERB_QUERY, "http took too long, dropped");
+		reclaim_http_handler(c);
+		if(!c->tcp_do_close) {
+			fptr_ok(fptr_whitelist_comm_point(c->callback));
+			(void)(*c->callback)(c, c->cb_arg,
+				NETEVENT_TIMEOUT, NULL);
+		}
+		return;
+	}
 	if(event&UB_EV_READ) {
 		if(!comm_point_http_handle_read(fd, c)) {
 			reclaim_http_handler(c);
@@ -2406,16 +2458,6 @@ comm_point_http_handle_callback(int fd, short event, void* arg)
 		}
 		return;
 	}
-	if(event&UB_EV_TIMEOUT) {
-		verbose(VERB_QUERY, "http took too long, dropped");
-		reclaim_http_handler(c);
-		if(!c->tcp_do_close) {
-			fptr_ok(fptr_whitelist_comm_point(c->callback));
-			(void)(*c->callback)(c, c->cb_arg,
-				NETEVENT_TIMEOUT, NULL);
-		}
-		return;
-	}
 	log_err("Ignored event %d for httphdl.", event);
 }
 
@@ -3138,8 +3180,8 @@ comm_point_stop_listening(struct comm_point* c)
 void 
 comm_point_start_listening(struct comm_point* c, int newfd, int msec)
 {
-	verbose(VERB_ALGO, "comm point start listening %d", 
-		c->fd==-1?newfd:c->fd);
+	verbose(VERB_ALGO, "comm point start listening %d (%d msec)", 
+		c->fd==-1?newfd:c->fd, msec);
 	if(c->type == comm_tcp_accept && !c->tcp_free) {
 		/* no use to start listening no free slots. */
 		return;
diff --git a/util/storage/lookup3.c b/util/storage/lookup3.c
index cc110748156f..bb25eb433c94 100644
--- a/util/storage/lookup3.c
+++ b/util/storage/lookup3.c
@@ -1,4 +1,7 @@
 /*
+  May 2019(Wouter) patch to enable the valgrind clean implementation all the
+     time.  This enables better security audit and checks, which is better
+     than the speedup.  Git issue #30.  Renamed the define ARRAY_CLEAN_ACCESS.
   February 2013(Wouter) patch defines for BSD endianness, from Brad Smith.
   January 2012(Wouter) added randomised initial value, fallout from 28c3.
   March 2007(Wouter) adapted from lookup3.c original, add config.h include.
@@ -44,6 +47,7 @@ on 1 byte), but shoehorning those bytes into integers efficiently is messy.
 -------------------------------------------------------------------------------
 */
 /*#define SELF_TEST 1*/
+#define ARRAY_CLEAN_ACCESS 1
 
 #include "config.h"
 #include "util/storage/lookup3.h"
@@ -336,7 +340,7 @@ uint32_t hashlittle( const void *key, size_t length, uint32_t initval)
   u.ptr = key;
   if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) {
     const uint32_t *k = (const uint32_t *)key;         /* read 32-bit chunks */
-#ifdef VALGRIND
+#ifdef ARRAY_CLEAN_ACCESS
     const uint8_t  *k8;
 #endif
 
@@ -361,7 +365,7 @@ uint32_t hashlittle( const void *key, size_t length, uint32_t initval)
      * still catch it and complain.  The masking trick does make the hash
      * noticeably faster for short strings (like English words).
      */
-#ifndef VALGRIND
+#ifndef ARRAY_CLEAN_ACCESS
 
     switch(length)
     {
diff --git a/util/ub_event.c b/util/ub_event.c
index 78481a982055..e097fbc40158 100644
--- a/util/ub_event.c
+++ b/util/ub_event.c
@@ -295,11 +295,18 @@ ub_event_new(struct ub_event_base* base, int fd, short bits,
 	if (!ev)
 		return NULL;
 
+#ifndef HAVE_EVENT_ASSIGN
 	event_set(ev, fd, NATIVE_BITS(bits), NATIVE_BITS_CB(cb), arg);
 	if (event_base_set(AS_EVENT_BASE(base), ev) != 0) {
 		free(ev);
 		return NULL;
 	}
+#else
+	if (event_assign(ev, AS_EVENT_BASE(base), fd, bits, cb, arg) != 0) {
+		free(ev);
+		return NULL;
+	}
+#endif
 	return AS_UB_EVENT(ev);
 }
 
@@ -312,11 +319,18 @@ ub_signal_new(struct ub_event_base* base, int fd,
 	if (!ev)
 		return NULL;
 
+#if !HAVE_DECL_EVSIGNAL_ASSIGN
 	signal_set(ev, fd, NATIVE_BITS_CB(cb), arg);
 	if (event_base_set(AS_EVENT_BASE(base), ev) != 0) {
 		free(ev);
 		return NULL;
 	}
+#else
+	if (evsignal_assign(ev, AS_EVENT_BASE(base), fd, cb, arg) != 0) {
+		free(ev);
+		return NULL;
+	}
+#endif
 	return AS_UB_EVENT(ev);
 }