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Hostname.ycp
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2006-11-29
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/**
* File: modules/Hostname.ycp
* Package: yast2
* Summary: Hostname manipulation routines
* Authors: Michal Svec <msvec@suse.cz>
* Flags: Stable
*
* $Id: Hostname.ycp 31242 2006-06-01 12:59:16Z locilka $
*/
{
module "Hostname";
textdomain "base";
import "IP";
/**
* i18n characters in domain names are still not allowed
*
* @unstable
*/
global string ValidChars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-";
global string ValidCharsDomain = ValidChars + ".";
global string ValidCharsFQ = ValidCharsDomain;
/**
* describe a valid domain name
* @return description
*/
global string ValidDomain () {
//Translators: dot: ".", hyphen: "-"
return _("A valid domain name consists of components separated by dots.
Each component contains letters, digits, and hyphens. A hyphen may not
start or end a component and the last component may not begin with a digit.");
}
/**
* describe a valid host name
* @return description
*/
global string ValidHost () {
//Translators: hyphen: "-"
return _("A valid host name consists of letters, digits, and hyphens.
A host name may not begin or end with a hyphen.
");
}
/**
* describe a valid FQ host name
* @return describe a valid FQ host name
*/
global string ValidFQ() {
return ValidDomain();
}
/**
* Check syntax of hostname entry
* (that is a domain name component, unqualified, without dots)
* @see rfc1123, rfc2396 and obsoleted rfc1034
* @param host hostname
* @return true if correct
*/
global define boolean Check(string host) ``{
if (host == nil || host == "" || size(host) > 63) return false;
return regexpmatch(host, "^[[:alnum:]]([[:alnum:]-]*[[:alnum:]])?$");
}
/**
* Check syntax of domain entry
* @param domain domain name
* @return true if correct
*/
global define boolean CheckDomain(string domain) ``{
if (domain == nil || domain == "") return false;
list <string> l = splitstring(domain, ".");
if (contains (maplist(string h, l, ``(Check(h))), false)) return false;
return !regexpmatch (domain, "\\.[[:digit:]][^.]*$");
}
/**
* Check syntax of fully qualified hostname
* @param host hostname
* @return true if correct
*/
global define boolean CheckFQ(string host) ``{
return CheckDomain(host);
}
/**
* Split FQ hostname to hostname and domain name
* @param fqhostname FQ hostname
* @return list of hostname and domain name
* @example Hostname::SplitFQ("ftp.suse.cz") -> ["ftp", "suse.cz"]
* @example Hostname::SplitFQ("ftp") -> ["ftp"]
*/
global define list<string> SplitFQ(string fqhostname) ``{
if (fqhostname == "" || fqhostname == nil) {
y2error("Bad FQ hostname: %1", fqhostname);
return [];
}
string hn = "";
string dn = "";
integer dot = findfirstof(fqhostname, ".");
if (dot != nil) {
hn = substring(fqhostname, 0, dot);
dn = substring(fqhostname, dot+1);
return [ hn, dn ];
}
else {
hn = fqhostname;
return [ hn ];
}
return [ hn, dn ];
}
/**
* Merge short hostname and domain to full-qualified host name
* @param hostname short host name
* @param domain domain name
* @return FQ hostname
*/
global define string MergeFQ(string hostname, string domain) {
if(domain == "" || domain == nil) return hostname;
return hostname + "." + domain;
}
/* EOF */
}