Add DNS testing setup using BIND 9

.circleci/config.yml

@@ -42,6 +42,8 @@ jobs:
               ldap-utils \
               openssl \
               slapd \
+              bind9 \
+              bind9utils \
               libgmp-dev \
               libicu-dev \
               libtidy-dev \

.github/actions/setup-x64/action.yml

@@ -6,6 +6,9 @@ runs:
       run: |
         set -x
 
+        sudo ./ext/standard/tests/dns/bind-start.sh
+        sudo ./ext/standard/tests/dns/resolv-setup.sh
+
         sudo service slapd start
         docker exec sql1 /opt/mssql-tools18/bin/sqlcmd -S 127.0.0.1 -U SA -C -P "<YourStrong@Passw0rd>" -Q "create login pdo_test with password='password', check_policy=off; create user pdo_test for login pdo_test; grant alter, control to pdo_test;"
         docker exec sql1 /opt/mssql-tools18/bin/sqlcmd -S 127.0.0.1 -U SA -C -P "<YourStrong@Passw0rd>" -Q "create login odbc_test with password='password', check_policy=off; create user odbc_test for login odbc_test; grant alter, control, delete to odbc_test;"

ext/standard/tests/dns/bind-start.sh

@@ -0,0 +1,68 @@
+#!/usr/bin/bash
+
+set -euo pipefail
+
+# Resolve script location
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ZONES_DIR="$SCRIPT_DIR/zones"
+NAMED_CONF="named.conf.local"
+PID_FILE="$ZONES_DIR/named.pid"
+LOG_FILE="$SCRIPT_DIR/named.log"
+
+# Default mode: background
+FOREGROUND=false
+if [[ "${1:-}" == "-f" ]]; then
+  FOREGROUND=true
+fi
+
+# Ensure zones directory exists
+if [ ! -d "$ZONES_DIR" ]; then
+  echo "Zone directory $ZONES_DIR not found."
+  exit 1
+fi
+
+# Clean up any leftover journal or PID files
+rm -f "$ZONES_DIR"/*.jnl "$PID_FILE"
+
+# Print what we're doing
+echo "Starting BIND from $SCRIPT_DIR"
+
+if $FOREGROUND; then
+  echo "(running in foreground)"
+  exec named -c "$NAMED_CONF" -p 53 -u "$(whoami)" -t "$SCRIPT_DIR" -g -d 1
+else
+  echo "(running in background)"
+  named -c "$NAMED_CONF" -p 53 -u "$(whoami)" -t "$SCRIPT_DIR"  > "$LOG_FILE" 2>&1
+
+  # Wait for BIND to start with periodic checks
+  MAX_WAIT=20  # Maximum wait time in attempts (20 * 0.5s = 10s)
+  CHECK_INTERVAL=0.5  # Check every 500ms
+  ATTEMPTS=0
+
+  echo -n "Waiting for BIND to start"
+
+  while [[ $ATTEMPTS -lt $MAX_WAIT ]]; do
+    if [[ -f "$PID_FILE" ]] && kill -0 "$(cat "$PID_FILE")" 2>/dev/null; then
+      echo ""  # New line after the dots
+      ELAPSED=$(echo "scale=1; $ATTEMPTS * $CHECK_INTERVAL" | bc 2>/dev/null || echo "${ATTEMPTS}")
+      echo "BIND started in background with PID $(cat "$PID_FILE") (took ~${ELAPSED}s)"
+      exit 0
+    fi
+
+    echo -n "."
+    sleep "$CHECK_INTERVAL"
+    ((ATTEMPTS++))
+  done
+
+  echo ""  # New line after the dots
+  TOTAL_WAIT=$(echo "scale=1; $MAX_WAIT * $CHECK_INTERVAL" | bc 2>/dev/null || echo "${MAX_WAIT}")
+  echo "Failed to start BIND within ~${TOTAL_WAIT}s. See $LOG_FILE for details."
+
+  # Show last few lines of log for debugging
+  if [[ -f "$LOG_FILE" ]]; then
+    echo "Last few lines from log:"
+    tail -5 "$LOG_FILE"
+  fi
+
+  exit 1
+fi

ext/standard/tests/dns/bind-stop.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/bash
+
+set -euo pipefail
+
+# Resolve script location
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ZONES_DIR="$SCRIPT_DIR/zones"
+PID_FILE="$ZONES_DIR/named.pid"
+
+if [ -f "$PID_FILE" ]; then
+    NAMED_PID=$(cat $PID_FILE)
+    if [ -n "$NAMED_PID" ]; then
+        echo "Stopping BIND running on pid $NAMED_PID"
+        kill $NAMED_PID
+    else
+        echo "BIND pid is empty"
+    fi
+else
+    echo "BIND is not running"
+fi

ext/standard/tests/dns/dns_get_record_basic.phpt

@@ -0,0 +1,27 @@
+--TEST--
+dns_get_record() basic usage
+--SKIPIF--
+<?php require "skipif.inc"; ?>
+--FILE--
+<?php
+$domain = 'www.basic.dnstest.php.net';
+
+$result = dns_get_record($domain, DNS_A);
+var_dump($result);
+?>
+--EXPECTF--
+array(%d) {
+  [0]=>
+  array(%d) {
+    ["host"]=>
+    string(%d) "www.basic.dnstest.php.net"
+    ["class"]=>
+    string(2) "IN"
+    ["ttl"]=>
+    int(%d)
+    ["type"]=>
+    string(1) "A"
+    ["ip"]=>
+    string(%d) "192.0.2.1"
+  }
+}

ext/standard/tests/dns/named.conf.local

@@ -0,0 +1,12 @@
+options {
+    directory "zones";
+    listen-on port 53 { 127.0.0.1; };
+    allow-query { any; };
+    pid-file "named.pid";
+    recursion yes;
+};
+
+zone "basic.dnstest.php.net" {
+    type master;
+    file "basic.dnstest.php.net.zone";
+};

ext/standard/tests/dns/resolv-reset.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/bash
+set -euo pipefail
+
+echo "Current DNS configuration:"
+resolvectl status | grep -E 'Link|Current DNS Server:|DNS Servers:'
+
+echo -e "\nResetting DNS configuration by restarting systemd-resolved..."
+systemctl restart systemd-resolved.service
+
+# Give it a moment to fully restart
+sleep 1
+
+echo -e "\nUpdated DNS configuration:"
+resolvectl status | grep -E 'Link|Current DNS Server:|DNS Servers:'
+
+echo -e "\nDNS configuration has been reset to original state."

ext/standard/tests/dns/resolv-setup.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/bash
+set -euo pipefail
+
+LOCAL_DNS="127.0.0.1"
+
+echo "Looking for a DNS-enabled network interface..."
+
+resolvectl status
+
+# Find the interface with DNS and DefaultRoute using grep
+IFACE=$(resolvectl status | grep -B1 "Current Scopes: DNS" | grep "Link" | head -n1 | sed -E 's/Link [0-9]+ \(([^)]+)\)/\1/')
+
+if [[ -z "$IFACE" ]]; then
+    echo "Could not find a suitable interface with DNS configured."
+    exit 1
+fi
+
+echo "Using interface: $IFACE"
+
+# Get current DNS server
+echo "Current configuration:"
+resolvectl status "$IFACE" | grep -E 'Current DNS Server:|DNS Servers:'
+
+echo "Setting DNS to $LOCAL_DNS for $IFACE"
+
+# Reset interface configuration
+resolvectl revert "$IFACE"
+
+# Set DNS to local
+resolvectl dns "$IFACE" "$LOCAL_DNS"
+
+# Confirm setup
+echo -e "\nUpdated configuration:"
+resolvectl status "$IFACE" | grep -E 'Current DNS Server:|DNS Servers:'
+
+echo -e "\nDNS configuration has been updated."

ext/standard/tests/dns/skipif.inc

@@ -0,0 +1,13 @@
+<?php
+// Do not run on Windows
+if (substr(PHP_OS, 0, 3) == 'WIN') {
+    die("skip not for Windows");
+}
+// Run only if base functions are available
+if (!function_exists('dns_get_record')) {
+    die("skip DNS functions not available");
+}
+// Run only if BIND server is running
+if (!file_exists(__DIR__ . '/zones/named.pid')) {
+    die("skip BIND server is not running");
+}

ext/standard/tests/dns/zones/.gitignore

@@ -0,0 +1 @@
+managed-keys.*

ext/standard/tests/dns/zones/basic.dnstest.php.net.zone

@@ -0,0 +1,16 @@
+$TTL 86400
+@       IN      SOA     ns1.basic.dnstest.php.net. hostmaster.basic.dnstest.php.net. (
+                          2025041101 ; Serial
+                          3600       ; Refresh
+                          1800       ; Retry
+                          604800     ; Expire
+                          86400 )    ; Minimum TTL
+
+        IN      NS      ns1.basic.dnstest.php.net.
+
+ns1     IN      A       127.0.0.1
+www     IN      A       192.0.2.1
+mx1     IN      A       192.0.2.2
+        IN      MX 10   mx1.basic.dnstest.php.net.
+
+txt1    IN      TXT     "This is a test TXT record"