Revision fba691ae
Added by Marc Dequènes almost 16 years ago
- ID fba691ae268e2d90b38db4a6ee6587e6c75d8505
| lib/cyborghood/services/dns.rb | ||
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@config = Config.instance
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@content = nil
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@filename = @config.dns.master_zone_pattern.gsub("#ZONE#", @zone)
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# TODO: should be checked at startup time
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raise CyberError.new(:unrecoverable, "services/dns", "erroneous configuration: pattern is constant") if @filename == @config.dns.master_zone_pattern
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# ensure we can find the needed programs (should be handled somewhere else)
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ENV['PATH'] = (ENV['PATH'].split(":") + ["/sbin", "/usr/sbin", "/usr/local/sbin"]).uniq.join(":")
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end
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def read_zone
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filename = @config.dns.master_zone_pattern.gsub("#ZONE#", @zone)
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# TODO: should be checked at startup time
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raise CyberError.new(:unrecoverable, "services/dns", "erroneous configuration: pattern is constant") if filename == @config.dns.master_zone_pattern
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begin
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@content = File.read(filename)
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@content = File.read(@filename)
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rescue
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raise CyberError.new(:unrecoverable, "services/dns", "zone '#{@zone}' cannot be read (nonexistent or lack of permission)")
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end
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end
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def serial
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filename = @config.dns.master_zone_pattern.gsub("#ZONE#", @zone)
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# TODO: should be checked at startup time
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raise CyberError.new(:unrecoverable, "services/dns", "erroneous configuration: pattern is constant") if filename == @config.dns.master_zone_pattern
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case @config.dns.nameserver || :bind
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when :bind
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output = []
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begin
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IO.popen("named-checkzone -i none '#{@zone}' #{filename}") do |fp|
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IO.popen("named-checkzone -i none '#{@zone}' #{@filename}") do |fp|
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output << fp.gets.chomp! until fp.eof?
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end
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rescue
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| ... | ... | |
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end
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def write_zone_from_file(new_zone_filename)
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filename = @config.dns.master_zone_pattern.gsub("#ZONE#", @zone)
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# TODO: should be checked at startup time
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raise CyberError.new(:unrecoverable, "services/dns", "erroneous configuration: pattern is constant") if filename == @config.dns.master_zone_pattern
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# create backup
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FileUtils.cp(@filename, backup_zone_filename())
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FileUtils.cp(new_zone_filename, @filename)
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end
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def replace_zone_with_backup
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if File.exists?(backup_zone_filename())
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FileUtils.cp(backup_zone_filename(), @filename)
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else
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raise CyberError.new(:unrecoverable, "services/dns", "no zone backup file found")
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end
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end
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def reload_zone
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system "sudo rndc reload '#{@zone}' >/dev/null"
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end
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private
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FileUtils.cp(new_zone_filename, filename)
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def backup_zone_filename
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@filename + ".ch-backup"
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end
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end
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end
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| postman | ||
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require 'cyborghood/mail'
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require 'cyborghood/objects'
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require 'cyborghood/services/dns'
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require 'fileutils'
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#Socket.gethostname
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| ... | ... | |
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if current_serial.nil? or result.serial > current_serial
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begin
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srv_dns.write_zone_from_file(f.path)
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f.close!
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logger.info "zone changed"
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if srv_dns.reload_zone
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logger.info "zone reloaded"
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else
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logger.info "zone reload failed, replacing old content"
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srv_dns.replace_zone_with_backup
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result.message = "Internal error."
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return result
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end
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rescue
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logger.debug "Writing zone file failed"
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raise
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Also available in: Unified diff
[evol] backup zone before replacing, reload zone, and rollback zone if reload failed