Bug #70027 [NEW]: dns_get_record does not behave the same between BSD and others

From: magicaltux at gmail dot com Operating system: FreeBSD 10.x PHP version: 5.5.26 Package: Network related Bug Type: Bug Bug description:dns_get_record does not behave the same between BSD and others Description: ------------ dns_get_record() allows retrieving one or multiple DNS records of one or multiple types. When requesting for DNS_A + DNS_AAAA records but only A records are available, then only A records are returned, except on BSD where instead an error is returned. PHP will check h_errno for error, however it seems that FreeBSD 10.x or res_nsearch() will not update this value, and will instead update res_h_errno in the handle. In ext/standard/dns.c after the call to php_dns_search() I have added this debug line: fprintf(stderr, "n=%d h_errno=%d statp->res_h_errno=%d\n", n, h_errno, handle->res_h_errno); The result when running the test script below was: n=53 h_errno=0 statp->res_h_errno=1 n=-1 h_errno=0 statp->res_h_errno=4 So we could when HAVE_RES_NSEARCH is defined do the switch not on h_errno, but handle->res_h_errno. Test script: --------------- var_dump(dns_get_record("www.asahi-net.or.jp", DNS_A + DNS_AAAA)); Expected result: ---------------- array(1) { [0]=> array(5) { ["host"]=> string(19) "www.asahi-net.or.jp" ["class"]=> string(2) "IN" ["ttl"]=> int(40667) ["type"]=> string(1) "A" ["ip"]=> string(13) "202.224.39.34" } } Actual result: -------------- Warning: dns_get_record(): DNS Query failed in test.php on line 2 bool(false) -- Edit bug report at https://bugs.php.net/bug.php?id=70027&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70027&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70027&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70027&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=70027&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=70027&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=70027&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=70027&r=needscript Try newer version: https://bugs.php.net/fix.php?id=70027&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=70027&r=support Expected behavior: https://bugs.php.net/fix.php?id=70027&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=70027&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=70027&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=70027&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70027&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=70027&r=dst IIS Stability: https://bugs.php.net/fix.php?id=70027&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=70027&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=70027&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=70027&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=70027&r=mysqlcfg