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55 lines
1.4 KiB
55 lines
1.4 KiB
package types
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import (
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"regexp"
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)
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var (
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MinNameRegistrationPeriod int = 5
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// NOTE: base costs and validity checks are here so clients
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// can use them without importing state
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// cost for storing a name for a block is
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// CostPerBlock*CostPerByte*(len(data) + 32)
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NameByteCostMultiplier int64 = 1
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NameBlockCostMultiplier int64 = 1
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MaxNameLength = 64
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MaxDataLength = 1 << 16
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// Name should be file system lik
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// Data should be anything permitted in JSON
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regexpAlphaNum = regexp.MustCompile("^[a-zA-Z0-9._/-@]*$")
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regexpJSON = regexp.MustCompile(`^[a-zA-Z0-9_/ \-+"':,\n\t.{}()\[\]]*$`)
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)
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// filter strings
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func validateNameRegEntryName(name string) bool {
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return regexpAlphaNum.Match([]byte(name))
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}
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func validateNameRegEntryData(data string) bool {
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return regexpJSON.Match([]byte(data))
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}
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// base cost is "effective" number of bytes
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func NameBaseCost(name, data string) int64 {
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return int64(len(data) + 32)
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}
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func NameCostPerBlock(baseCost int64) int64 {
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return NameBlockCostMultiplier * NameByteCostMultiplier * baseCost
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}
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type NameRegEntry struct {
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Name string `json:"name"` // registered name for the entry
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Owner []byte `json:"owner"` // address that created the entry
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Data string `json:"data"` // data to store under this name
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Expires int `json:"expires"` // block at which this entry expires
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}
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func (entry *NameRegEntry) Copy() *NameRegEntry {
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entryCopy := *entry
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return &entryCopy
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}
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