Class: Yast::HostClass
- Inherits:
-
Module
- Object
- Module
- Yast::HostClass
- Defined in:
- ../../src/modules/Host.rb
Instance Method Summary (collapse)
- - (Object) EnsureHostnameResolvable
-
- (Object) Export
Dump the Hosts settings to a map, for autoinstallation use.
-
- (Boolean) GetModified
Function which returns if the settings were modified.
-
- (Array) GetSystemHosts
Return “system” predefined hosts (should be present all the time).
-
- (Object) Import(settings)
Get all the Hosts configuration from a map.
- - (Object) main
- - (Object) NeedDummyIP
-
- (Object) Read
Read hosts settings.
-
- (Object) ResolveHostnameToStaticIPs
if we have a static address, make sure /etc/hosts resolves it to our, bnc#664929.
-
- (Object) SetModified
Function sets internal variable, which indicates, that any settings were modified, to “true”.
- - (Object) StaticIPs
-
- (Object) Summary
Create summary.
-
- (Object) Update(oldhn, newhn, iplist)
Update hosts according to the current hostname (only one hostname, assigned to all IPs).
-
- (Object) Write
Write hosts settings and apply changes.
Instance Method Details
- (Object) EnsureHostnameResolvable
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# File '../../src/modules/Host.rb', line 70 def EnsureHostnameResolvable local_ip = "127.0.0.2" if NeedDummyIP() Builtins.y2milestone("Dummy 127.0.0.2 IP will be added") # Add 127.0.0.2 entry to /etc/hosts,if product default says so # or user requests it otherwise some desktop apps may hang, # being unable to resolve hostname (bnc#304632) fqhostname = Hostname.MergeFQ(DNS.hostname, DNS.domain) Ops.set( @hosts, local_ip, [Ops.add(Ops.add(fqhostname, " "), DNS.hostname)] ) else # Do not add it if product default says no # and remove 127.0.02 entry if it exists Ops.set(@hosts, local_ip, []) if Builtins.haskey(@hosts, local_ip) end @modified = true nil end |
- (Object) Export
Dump the Hosts settings to a map, for autoinstallation use.
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# File '../../src/modules/Host.rb', line 209 def Export if Ops.greater_than(Builtins.size(@hosts), 0) # Filter out IPs with empty hostname (so that valid autoyast # profile is created)(#335120) @hosts = Builtins.filter(@hosts) { |_ip, names| names != [] } return { "hosts" => Builtins.eval(@hosts) } else return {} end end |
- (Boolean) GetModified
Function which returns if the settings were modified
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# File '../../src/modules/Host.rb', line 340 def GetModified @modified end |
- (Array) GetSystemHosts
Return “system” predefined hosts (should be present all the time)
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# File '../../src/modules/Host.rb', line 222 def GetSystemHosts [ "127.0.0.1", "::1", "fe00::0", "ff00::0", "ff02::1", "ff02::2", "ff02::3" ] end |
- (Object) Import(settings)
Get all the Hosts configuration from a map. When called by hosts_auto (preparing autoinstallation data) the map may be empty.
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# File '../../src/modules/Host.rb', line 190 def Import(settings) settings = deep_copy(settings) @modified = true # trigger Write @initialized = true # don't let Read discard our data @hosts = Builtins.eval(Ops.get_map(settings, "hosts", {})) # convert from old format to the new one # use ::1 entry as a reference if Ops.greater_than(Builtins.size(Ops.get(@hosts, "::1", [])), 1) Builtins.foreach(@hosts) do |ip, hn| Ops.set(@hosts, ip, [Builtins.mergestring(hn, " ")]) end end true end |
- (Object) main
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# File '../../src/modules/Host.rb', line 33 def main Yast.import "UI" textdomain "network" Yast.import "DNS" Yast.import "Hostname" Yast.import "NetworkInterfaces" Yast.import "String" Yast.import "Summary" Yast.include self, "network/routines.rb" # All hosts # See hosts(5) # keys: IPs, (But #35671 suggests that repeating IPs is valid) # values: names, the first one is the canonical one @hosts = {} # Data was modified? @modified = false # All hosts read at the start @hosts_init = {} # "hosts" file location @hosts_file = "/etc/hosts" # Only write configuration @write_only = false @initialized = false end |
- (Object) NeedDummyIP
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# File '../../src/modules/Host.rb', line 66 def NeedDummyIP DNS.write_hostname end |
- (Object) Read
Read hosts settings
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# File '../../src/modules/Host.rb', line 96 def Read return true if @initialized == true # read /etc/hosts if Ops.greater_than(SCR.Read(path(".target.size"), @hosts_file), 0) hostlist = SCR.Dir(path(".etc.hosts")) @hosts = Builtins.listmap(hostlist) do |host| names = Convert.convert( SCR.Read( Builtins.topath(Builtins.sformat(".etc.hosts.\"%1\"", host)) ), from: "any", to: "list <string>" ) next { host => names } if names != [] end end # save hosts to check for changes later @hosts_init = deep_copy(@hosts) Builtins.y2debug("hosts=%1", @hosts) @initialized = true true end |
- (Object) ResolveHostnameToStaticIPs
if we have a static address, make sure /etc/hosts resolves it to our, bnc#664929
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# File '../../src/modules/Host.rb', line 328 def ResolveHostnameToStaticIPs static_ips = StaticIPs() if Ops.greater_than(Builtins.size(static_ips), 0) fqhostname = Hostname.MergeFQ(DNS.hostname, DNS.domain) Update(fqhostname, fqhostname, static_ips) end nil end |
- (Object) SetModified
Function sets internal variable, which indicates, that any settings were modified, to “true”
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# File '../../src/modules/Host.rb', line 345 def SetModified @modified = true nil end |
- (Object) StaticIPs
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# File '../../src/modules/Host.rb', line 315 def StaticIPs NetworkInterfaces.Read devs = NetworkInterfaces.Locate("BOOTPROTO", "static") devs = Builtins.filter(devs) { |dev| dev != "lo" } ips = Builtins.maplist(devs) do |dev| NetworkInterfaces.GetValue(dev, "IPADDR") end Builtins.y2milestone("ifcfgs: %1 IPs: %2", devs, ips) deep_copy(ips) end |
- (Object) Summary
Create summary
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# File '../../src/modules/Host.rb', line 298 def Summary summary = "" return Summary.NotConfigured if @hosts == {} summary = Summary.OpenList(summary) Builtins.foreach(@hosts) do |k, v| Builtins.foreach(v) do |hn| summary = Summary.AddListItem(summary, Ops.add(Ops.add(k, " - "), hn)) end if !Builtins.contains( GetSystemHosts(), k ) end summary = Summary.CloseList(summary) summary end |
- (Object) Update(oldhn, newhn, iplist)
Update hosts according to the current hostname (only one hostname, assigned to all IPs)
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# File '../../src/modules/Host.rb', line 240 def Update(oldhn, newhn, iplist) iplist = deep_copy(iplist) ips = Builtins.filter(iplist) { |ip| ip != "127.0.0.1" } Builtins.y2milestone("Hosts: %1", @hosts) Builtins.y2milestone( "Updating /etc/hosts: %1 -> %2: %3", oldhn, newhn, ips ) @modified = true nick = Ops.get(Hostname.SplitFQ(newhn), 0, "") # Remove old hostname from hosts # list oldhnlist = []; if !oldhn.empty? Builtins.foreach(@hosts) do |ip, hs| wrk = Builtins.maplist(hs) { |s| Builtins.splitstring(s, " ") } wrk = Builtins.filter(wrk) { |lst| !Builtins.contains(lst, oldhn) } Ops.set(@hosts, ip, Builtins.maplist(wrk) do |lst| Builtins.mergestring(lst, " ") end) end end # Resurect the rest of oldhnlist without old hostname # FIXME: maybe # Add localhost if missing if !Builtins.haskey(@hosts, "127.0.0.1") Ops.set(@hosts, "127.0.0.1", ["localhost"]) end # Add hostname/ip for all ips nickadded = false Builtins.maplist(ips) do |ip| # Only add if not present yet # if(haskey(hosts, ip)) return; # Omit some IP addresses next if ip == "" || ip.nil? || ip == "127.0.0.1" name = newhn # Add nick for the first one if !nickadded && name != "" nickadded = true name = Ops.add(Ops.add(newhn, " "), nick) end Ops.set(@hosts, ip, Builtins.add(Ops.get(@hosts, ip, []), name)) end Builtins.y2milestone("Hosts: %1", @hosts) true end |
- (Object) Write
Write hosts settings and apply changes
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# File '../../src/modules/Host.rb', line 124 def Write Builtins.y2milestone("Writing hosts configuration") if !@modified Builtins.y2milestone("No changes to Host -> nothing to write") return true end # Check if there is anything to do if @hosts_init == @hosts Builtins.y2milestone("Hosts not modified") return true end steps = [_("Update /etc/hosts")] caption = _("Saving Hostname Configuration") sl = 500 # sleep for longer time, so that progress does not disappear right afterwards Progress.New(caption, " ", Builtins.size(steps), steps, [], "") ProgressNextStage(_("Updating /etc/hosts ...")) # Create if not exists, otherwise backup if Ops.less_than(SCR.Read(path(".target.size"), @hosts_file), 0) SCR.Write(path(".target.string"), @hosts_file, "") else SCR.Execute( path(".target.bash"), Ops.add( Ops.add(Ops.add(Ops.add("/bin/cp ", @hosts_file), " "), @hosts_file), ".YaST2save" ) ) end ret = false if @hosts == {} || @hosts.nil? # Workaround bug [#4476] ret = SCR.Write(path(".target.string"), @hosts_file, "") else # Update the hosts config Builtins.y2milestone("hosts=%1", @hosts) Builtins.maplist(@hosts) do |ho, names| Builtins.y2milestone( "%1 (%2:%3)", ho, names, Ops.get(@hosts_init, ho) ) SCR.Write(Builtins.add(path(".etc.hosts"), ho), names) end ret = true end SCR.Write(path(".etc.hosts"), nil) Builtins.sleep(sl) Progress.NextStage ret == true end |