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|
#! /usr/bin/env tclsh
package require json
package require json::write
namespace eval ::nano {}
namespace eval ::nano::block {}
namespace eval ::nano::block::account {}
namespace eval ::nano::address {}
set ::nano::address::base32alphabet {13456789abcdefghijkmnopqrstuwxyz}
proc ::nano::address::toPublicKey {address args} {
set performChecksumCheck false
set outputFormat "bytes"
foreach arg $args {
switch -exact -- $arg {
"-verify" {
set performChecksumCheck true
}
"-no-verify" {
set performChecksumCheck false
}
"-hex" {
set outputFormat "hex"
}
"-binary" {
set outputFormat "bytes"
}
default {
return -code error "Invalid option: $arg"
}
}
}
switch -glob -- $address {
"xrb_*" - "nano_*" {}
default {
return -code error "Invalid address (format, header)"
}
}
set address [join [lrange [split $address _] 1 end] _]
set address [split $address ""]
if {[llength $address] != 60} {
return -code error "Invalid address (length)"
}
set alphabet [split $::nano::address::base32alphabet ""]
set result 0
foreach byte $address {
set fiveBits [lsearch -exact $alphabet $byte]
if {$fiveBits < 0} {
return -code error "Invalid address (format, alphabet)"
}
set result [expr {($result << 5) | $fiveBits}]
}
set checksum [expr {$result & 0xffffffffff}]
set result [expr {$result >> 40}]
set result [format %064llX $result]
if {$performChecksumCheck} {
set resultBinary [binary decode hex $result]
set checksumVerify [binary encode hex [string reverse [::nano::internal::hashData $resultBinary 5]]]
set checksumVerify [expr "0x$checksumVerify"]
if {$checksum != $checksumVerify} {
return -code error "Invalid address (checksum)"
}
}
if {$outputFormat eq "bytes"} {
if {![info exists resultBinary]} {
set resultBinary [binary decode hex $result]
}
set result $resultBinary
}
return $result
}
proc ::nano::address::fromPublicKey {pubKey args} {
set addressPrefix "nano_"
foreach arg $args {
switch -exact -- $arg {
"-xrb" {
set addressPrefix "xrb_"
}
"-nano" {
set addressPrefix "nano_"
}
"-hex" {
set inputFormat "hex"
}
"-binary" {
set inputFormat "bytes"
}
default {
return -code error "Invalid option: $arg"
}
}
}
if {![info exists inputFormat]} {
if {[string length $pubKey] == 32} {
set inputFormat "bytes"
} else {
set inputFormat "hex"
}
}
if {$inputFormat eq "hex"} {
set pubKey [binary decode hex $pubKey]
}
if {[string length $pubKey] != 32} {
return -code error "Invalid key (length)"
}
set checksum [string reverse [::nano::internal::hashData $pubKey 5]]
append pubKey $checksum
set pubKey [binary encode hex $pubKey]
set pubKey [expr "0x$pubKey"]
set alphabet [split $::nano::address::base32alphabet ""]
set address ""
for {set index 0} {$index < 60} {incr index} {
set fiveBits [expr {$pubKey & 0x1F}]
set pubKey [expr {$pubKey >> 5}]
set byte [lindex $alphabet $fiveBits]
append address $byte
}
set address [string reverse $address]
set address "${addressPrefix}${address}"
return $address
}
proc ::nano::sign {} {
proc ::nano::block::fromJSON {json} {
array set block [json::json2dict $json]
switch -- $block(type) {
"state" {
# XXX:TODO: Find the source of this
append blockData [binary decode hex "0000000000000000000000000000000000000000000000000000000000000006"]
append blockData [::nano::address::toPublicKey $block(account)]
append blockData [binary decode hex $block(previous)]
append blockData [::nano::address::toPublicKey $block(representative)]
append blockData [binary decode hex [format %032llX $block(balance)]]
if {![info exists block(link)] && [info exists block(link_as_account)]} {
append blockData [::nano::address::toPublicKey $block(link_as_account)]
} else {
append blockData [binary decode hex $block(link)]
}
}
"open" {
append blockData [binary decode hex $block(source)]
append blockData [::nano::address::toPublicKey $block(representative)]
append blockData [::nano::address::toPublicKey $block(account)]
}
"send" {
append blockData [binary decode hex $block(previous)]
append blockData [::nano::address::toPublicKey $block(destination)]
append blockData [binary decode hex [format %032llX $block(balance)]]
}
"receive" {
append blockData [binary decode hex $block(previous)]
append blockData [binary decode hex $block(source)]
}
"change" {
append blockData [binary decode hex $block(previous)]
append blockData [::nano::address::toPublicKey $block(representative)]
}
default {
return -code error "Invalid block type $block(type)"
}
}
return $blockData
}
proc ::nano::block::_dictToJSON {blockDict {addArgs_fromPublicKey ""}} {
array set block $blockDict
set blockJSONFields {type account source destination previous representative balance link link_as_account _blockHash}
set blockJSONEntries [lmap field $blockJSONFields {
if {![info exists block($field)]} {
continue
}
switch -exact -- $field {
"source" - "previous" - "link" - "_blockHash" {
set block($field) [string toupper $block($field)]
}
}
return -level 0 [list $field [json::write string $block($field)]]
}]
set blockJSONEntries [join $blockJSONEntries]
set blockJSON [json::write object {*}$blockJSONEntries]
return $blockJSON
}
proc ::nano::block::toJSON {blockData args} {
set block(type) ""
set addressPrefix "nano_"
foreach arg $args {
switch -glob -- $arg {
"-type=*" {
set block(type) [lindex [split $arg =] 1]
}
"-xrb" {
set addressPrefix "xrb_"
}
"-nano" {
set addressPrefix "nano_"
}
default {
return -code error "Invalid option: $arg"
}
}
}
if {$block(type) eq ""} {
switch -- [string length $blockData] {
176 { set block(type) state }
96 { set block(type) open }
80 { set block(type) send }
default {
return -code error "Unable to parse block, must specify type"
}
}
}
set addArgs_fromPublicKey [list]
if {$addressPrefix eq "xrb_"} {
lappend addArgs_fromPublicKey "-xrb"
}
switch -- $block(type) {
"state" {
binary scan $blockData H64a32H64a32H32H64 \
block(header) \
block(account) \
block(previous) \
block(representative) \
block(balance) \
block(link)
if {$block(header) ne "0000000000000000000000000000000000000000000000000000000000000006"} {
return -code error "Invalid block"
}
}
"open" {
binary scan $blockData H64a32a32 \
block(source) \
block(representative) \
block(account)
}
"send" {
binary scan $blockData H64a32H32 \
block(previous) \
block(destination) \
block(balance)
}
"receive" {
binary scan $blockData H64H64 \
block(previous) \
block(source)
}
"change" {
binary scan $blockData H64a32 \
block(previous) \
block(representative)
}
default {
return -code error "Invalid block type: $block(type)"
}
}
foreach field {account representative link_as_account destination balance} {
if {![info exists block($field)]} {
continue
}
switch -exact -- $field {
"account" - "representative" - "link_as_account" - "destination" {
set block($field) [::nano::address::fromPublicKey $block($field) {*}$addArgs_fromPublicKey]
}
"balance" {
set block($field) [format %lli "0x$block($field)"]
}
}
}
set blockJSON [_dictToJSON [array get block] ${addArgs_fromPublicKey}]
return $blockJSON
}
proc ::nano::block::hash {blockData args} {
set outputFormat "bytes"
foreach arg $args {
switch -exact -- $arg {
"-hex" {
set outputFormat "hex"
}
"-binary" {
set outputFormat "bytes"
}
default {
return -code error "Invalid option: $arg"
}
}
}
set hash [::nano::internal::hashData $blockData 32]
if {$outputFormat eq "hex"} {
set hash [string toupper [binary encode hex $hash]]
}
return $hash
}
proc ::nano::block::account::_finalizeBlock {blockDict} {
set blockJSON [::nano::block::_dictToJSON $blockDict]
set block [::nano::block::fromJSON $blockJSON]
set blockHash [::nano::block::hash $block -hex]
dict set blockDict "_blockHash" $blockHash
set blockJSON [::nano::block::_dictToJSON $blockDict]
return $blockJSON
}
proc ::nano::block::account::send {args} {
array set block $args
if {![info exists block(representative)]} {
set block(representative) $block(from)
}
set block(balance) [expr {$block(priorBalance) - $block(amount)}]
set blockDict [dict create \
"type" state \
"account" $block(from) \
"previous" $block(previous) \
"representative" $block(representative) \
"balance" $block(balance) \
"link_as_account" $block(to) \
]
tailcall _finalizeBlock $blockDict
}
proc ::nano::block::account::receive {args} {
array set block $args
if {![info exists block(representative)]} {
set block(representative) $block(to)
}
if {![info exists block(previous)]} {
set block(previous) "0000000000000000000000000000000000000000000000000000000000000000"
}
set block(balance) [expr {$block(priorBalance) + $block(amount)}]
set blockDict [dict create \
"type" state \
"account" $block(to) \
"previous" $block(previous) \
"representative" $block(representative) \
"balance" $block(balance) \
"link" $block(sourceBlock) \
]
tailcall _finalizeBlock $blockDict
}
proc ::nano::block::account::setRepresentative {args} {
array set block $args
set block(balance) $block(priorBalance)
set block(link) "0000000000000000000000000000000000000000000000000000000000000000"
set blockDict [dict create \
"type" state \
"account" $block(account) \
"previous" $block(previous) \
"representative" $block(representative) \
"balance" $block(balance) \
"link" $block(link) \
]
tailcall _finalizeBlock $blockDict
}
package provide nano 0
|