Date: Tue, 25 Mar 2003 16:31:13 -0600 (CST) From: Marius Strom <marius@marius.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: misc/50299: Resolver rejects hostnames with underscores Message-ID: <200303252231.h2PMVD8H079988@marius.org>
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>Number: 50299 >Category: misc >Synopsis: Resolver rejects hostnames with underscores >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: change-request >Submitter-Id: current-users >Arrival-Date: Tue Mar 25 14:40:12 PST 2003 >Closed-Date: >Last-Modified: >Originator: Marius Strom >Release: FreeBSD 4.7-STABLE i386 >Organization: marius dot org >Environment: System: FreeBSD sashimi.marius.org 4.7-STABLE FreeBSD 4.7-STABLE #2: Mon Nov 4 21:52:24 CST 2002 root@sashimi.marius.org:/usr/obj/usr/src/sys/SASHIMI.MARIUS.ORG-AMD i386 >Description: FreeBSD's resolver will reject hostnames/domains that have underscores in them. While RFC952 forbids these, RFC952 does not cover DNS. RFC2181 does, and lists no such restriction. Other OS (Microsoft, Mac OS X, Linux, etc.) do not have this restriction. >How-To-Repeat: ping host_name_with_underscore.domain.tld (subsitute ping for any tool using the FreeBSD resolver) >Fix: Apply this patch: --- lib/libc/net/res_comp.c.orig Tue Mar 25 16:23:06 2003 +++ lib/libc/net/res_comp.c Tue Mar 25 16:24:21 2003 @@ -144,13 +144,14 @@ #define hyphenchar(c) ((c) == 0x2d) #define bslashchar(c) ((c) == 0x5c) #define periodchar(c) ((c) == PERIOD) +#define uscorechar(c) ((c) == 0x5f) #define asterchar(c) ((c) == 0x2a) #define alphachar(c) (((c) >= 0x41 && (c) <= 0x5a) \ || ((c) >= 0x61 && (c) <= 0x7a)) #define digitchar(c) ((c) >= 0x30 && (c) <= 0x39) #define borderchar(c) (alphachar(c) || digitchar(c)) -#define middlechar(c) (borderchar(c) || hyphenchar(c)) +#define middlechar(c) (borderchar(c) || hyphenchar(c) || uscorechar(c)) #define domainchar(c) ((c) > 0x20 && (c) < 0x7f) int >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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