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http.go
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package main
import (
"bytes"
"encoding/binary"
"encoding/hex"
"errors"
"flag"
"fmt"
"github.com/bmatsuo/lmdb-go/lmdb"
"github.com/kaspanet/kaspad/util/difficulty"
"github.com/kaspanet/kaspad/domain/consensus/utils/constants"
"net/http"
"net/url"
"os"
"path/filepath"
"reflect"
"strconv"
"strings"
"time"
)
var HttpPort *string
func AddFlagHttp() {
HttpPort = flag.String("httpport", "80", "HTTP server port")
}
func HttpServe() {
binfilename, err := os.Executable()
PanicIfErr(err)
fileServer := http.FileServer(http.Dir(filepath.Dir(binfilename)))
http.Handle("/style.css", fileServer)
http.Handle("/phoenician-kaph.svg", fileServer)
http.Handle("/robots.txt", fileServer)
http.HandleFunc("/totalcoins", func(w http.ResponseWriter, r *http.Request) {
var html string
supply, err := RpcClient.GetCoinSupply()
if err != nil {
html = "<html><head><meta name=\"color-scheme\" content=\"light dark\"></head><body><pre style=\"word-wrap: break-word; white-space: pre-wrap;\">" +
"Not Found" +
"</pre></body></html>"
} else {
html = "<html><head><meta name=\"color-scheme\" content=\"light dark\"></head><body><pre style=\"word-wrap: break-word; white-space: pre-wrap;\">" +
fmt.Sprintf("%.8f", float64(supply.CirculatingSompi)/constants.SompiPerKaspa) +
"</pre></body></html>"
}
w.Write([]byte(html))
})
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
Log(LogInf, "Get: " + r.URL.Path)
NotFound := ""
if keys, ok := r.URL.Query()["s"]; ok {
searchStr, _ := url.QueryUnescape(keys[0])
searchStr = strings.ToLower(strings.TrimSpace(searchStr))
if hash, err := hex.DecodeString(searchStr); err == nil {
var block Block
if dbGet(PrefixBlock, hash[:KeyLength], &block) {
http.Redirect(w, r, "/block/"+searchStr, 301)
}
var tx Transaction
if dbGet(PrefixTransaction, hash[:KeyLength], &tx) {
http.Redirect(w, r, "/tx/"+searchStr, 301)
}
var txKey Key
if dbGet(PrefixTransactionHash, hash[:KeyLength], &txKey) {
http.Redirect(w, r, "/tx/"+B2s(txKey[:]), 301)
}
NotFound = "<p><strong>Not found:</strong> " + searchStr + "</p>"
}
if strings.HasPrefix(searchStr, "kaspa:") {
http.Redirect(w, r, "/addr/"+searchStr, 301)
}
_, err := strconv.Atoi(searchStr)
if err == nil {
http.Redirect(w, r, "/bs/"+searchStr, 301)
} else {
NotFound = "<p><strong>Not found:</strong> " + searchStr + "</p>"
}
}
body := NotFound + "<form action=\"/\">\n" +
"<input name=\"s\" placeholder=\"Search for block hash, transaction id or hash, address, blue score\"/>\n" +
"</form>\n"
blockDAGInfo := BlockDAGInfo{}
if dbGet(PrefixBlockDagInfo, nil, &blockDAGInfo) {
pruningPoint := ""
for k, v := range PruningPointsStr {
if v == blockDAGInfo.PruningPointIndex {
pruningPoint = k
break
}
}
body += "<table class=\"sans\">\n" +
"<tbody>\n" +
"<tr><th>KaspaD version</th><td class=\"l\">" + blockDAGInfo.KaspadVersion + "</td></tr>\n" +
"<tr><th>Virtual DAA score</th><td class=\"l\">" + FormatNumber(blockDAGInfo.VirtualDAAScore) + "</td></tr>\n" +
"<tr><th>Past median time</th><td class=\"l\">" + FormatTimestamp(blockDAGInfo.PastMedianTime) + "</td></tr>\n" +
"<tr><th>Block header count</th><td class=\"l\">" + FormatNumber(blockDAGInfo.HeaderCount) + "</td></tr>\n" +
"<tr><th>Block count</th><td class=\"l\">" + FormatNumber(blockDAGInfo.BlockCount) + "</td></tr>\n" +
"<tr><th>Difficulty</th><td class=\"l\">" + fmt.Sprintf("%f", blockDAGInfo.Difficulty) + "</td></tr>\n" +
"<tr><th>Latest pruning point</th><td class=\"l m\"><a href=\"/block/" + pruningPoint + "\">" + pruningPoint + "</a></td></tr>\n" +
"<tr><th>Tip hashes (" + FormatNumber(len(blockDAGInfo.TipHashes)) + ")</th><td class=\"l m\"><div class=\"scroll\">"
for _, hash := range blockDAGInfo.TipHashes {
hashStr := H2s(hash)
body += fmt.Sprintf("<div><a href=\"/block/%s\">%s</a></div>\n", hashStr, hashStr)
}
body += "</div></td></tr>\n"
// "<tr><th>Virtual parent hashes</th><td class=\"l m\">"
//for _, hash := range blockDAGInfo.VirtualParentHashes {
// hashStr := H2s(hash)
// body += fmt.Sprintf("<div><a href=\"/block/%s\">%s</a></div>\n", hashStr, hashStr)
//}
//body += "</td></tr>\n"
body += "</tbody>\n" +
"</table>"
}
body += "<table class=\"sans\">\n" +
"<caption>Latest blocks</caption>\n" +
"<thead>\n" +
"<tr><th>DAA score</th><th>Timestamp, UTC</th><th>Hash</th><th><abbr title=\"Number of parents\">#P</abbr></th><th><abbr title=\"Number of transactions\">#Tx</abbr></th><th>Blue score</th></tr>\n" +
"</thead>\n" +
"<tbody>\n"
latestHashes := blockDAGInfo.LatestHashes
latestNum := len(latestHashes)
var block Block
nilHash := Hash{}
for i := 0; i < latestNum; i++ {
hash := latestHashes[(int(blockDAGInfo.LatestHashesTop)+latestNum-i)%latestNum]
if hash != nilHash && dbGet(PrefixBlock, (hash)[:KeyLength], &block) {
hashStr := H2s(hash)
blueScoreStr := fmt.Sprintf("%d", block.BlueScore)
body += "<tr>" +
"<td>" + fmt.Sprintf("%d", block.DAAScore) + "</td>" +
"<td>" + FormatTimestamp(block.Timestamp) + "</td>" +
"<td><a href=\"/block/" + hashStr + "\">" + hashStr + "</a></td>" +
"<td>" + fmt.Sprintf("%d", len(block.ParentLevels[0])) + "</td>" +
"<td>" + fmt.Sprintf("%d", len(block.TransactionIds)) + "</td>" +
"<td><a href=\"/bs/" + blueScoreStr + "\">" + blueScoreStr + "</a></td>" +
"</tr>\n"
}
}
w.Header().Set("Content-Type", "application/xhtml+xml")
w.Write([]byte(Html(
"<style>\n"+
"td:nth-of-type(1), td:nth-of-type(4), td:nth-of-type(5), td:nth-of-type(6) { text-align: right }\n"+
"td:nth-of-type(4) { width: 1em }\n"+
"td:nth-of-type(5) { width: 1.5em }\n"+
"td:nth-of-type(3) { font-family: monospace,monospace; font-size: 1em }\n"+
"</style>", body+
"</tbody>\n"+
"</table>\n"+
"<p class=\"comment\">Github: <a href=\"https://github.com/cbytensky/katnip\">https://github.com/cbytensky/katnip</a></p>\n")))
})
http.HandleFunc("/bs/", func(w http.ResponseWriter, r *http.Request) {
Log(LogInf, "Get: " + r.URL.Path)
path := strings.Split(r.URL.Path, "/")
if len(path) < 3 {
HttpError(errors.New(fmt.Sprintf("Malformed path: %v", path)), "", w)
return
}
blueScoreStr := path[2]
blueScoreInt, err := strconv.Atoi(blueScoreStr)
if err != nil {
HttpError(errors.New(fmt.Sprintf("Bad blue score: %v", path)), " decoding blue score", w)
}
body := "<table class=\"sans\">\n" +
"<caption>Blocks with blue score " + blueScoreStr + "</caption>\n" +
"<thead>\n" +
"<tr><th>DAA score</th><th>Timestamp, UTC</th><th>Hash</th><th><abbr title=\"Number of parents\">#P</abbr></th><th><abbr title=\"Number of transactions\">#Tx</abbr></th><th>Blue score</th></tr>\n" +
"</thead>\n" +
"<tbody>\n"
_ = DbEnv.View(func(txn *lmdb.Txn) (err error) {
cursor, err := txn.OpenCursor(Db)
PanicIfErr(err)
blueScoreKey := make([]byte, 8)
binary.BigEndian.PutUint64(blueScoreKey, uint64(blueScoreInt))
keyPrefix := append([]byte{PrefixBlueScoreBlock}, blueScoreKey...)
key, _, err := cursor.Get(keyPrefix, nil, lmdb.SetRange)
if lmdb.IsErrno(err, lmdb.NotFound) {
return err
}
PanicIfErr(err)
for {
equal := true
for i, v := range keyPrefix {
if key[i] != v {
equal = false
break
}
}
if !equal {
break
}
var block Block
if dbGet(PrefixBlock, key[9:], &block) {
hashStr := H2s(block.Hash)
blueScoreStr := fmt.Sprintf("%d", block.BlueScore)
body += "<tr>" +
"<td>" + fmt.Sprintf("%d", block.DAAScore) + "</td>" +
"<td>" + FormatTimestamp(block.Timestamp) + "</td>" +
"<td><a href=\"/block/" + hashStr + "\">" + hashStr + "</a></td>" +
"<td>" + fmt.Sprintf("%d", len(block.ParentLevels[0])) + "</td>" +
"<td>" + fmt.Sprintf("%d", len(block.TransactionIds)) + "</td>" +
"<td><a href=\"/bs/" + blueScoreStr + "\">" + blueScoreStr + "</a></td>" +
"</tr>\n"
}
key, _, err = cursor.Get(nil, nil, lmdb.Next)
if lmdb.IsErrno(err, lmdb.NotFound) {
break
}
PanicIfErr(err)
}
return nil
})
w.Header().Set("Content-Type", "application/xhtml+xml")
w.Write([]byte(Html(
"<style>\n"+
"td:nth-of-type(1), td:nth-of-type(4), td:nth-of-type(5), td:nth-of-type(6) { text-align: right }\n"+
"td:nth-of-type(4) { width: 1em }\n"+
"td:nth-of-type(5) { width: 1.5em }\n"+
"td:nth-of-type(3) { font-family: monospace,monospace; font-size: 1em }\n"+
"</style>", body+
"</tbody>\n"+
"</table>\n")))
})
http.HandleFunc("/addr/", func(w http.ResponseWriter, r *http.Request) {
Log(LogInf, "Get: " + r.URL.Path)
path := strings.Split(r.URL.Path, "/")
if len(path) < 3 {
HttpError(errors.New(fmt.Sprintf("Malformed path: %v", path)), "", w)
return
}
body := ""
addr := path[2]
if len(path) == 4 && path[3] == "utxos" {
response, err := RpcClient.GetUTXOsByAddresses([]string{addr})
if err == nil {
tbody := ""
total := uint64(0)
for _, entry := range (*response).Entries {
tick := ""
utxo := *entry.UTXOEntry
outpoint := *entry.Outpoint
if utxo.IsCoinbase {
tick = "✓"
}
txId := outpoint.TransactionID
tbody += "<tr><td>" + FormatKaspa(utxo.Amount) + "</td><td>" + tick + "</td><td><a href=\"/tx/" + txId + "\">" + txId + "</a></td>" +
"<td>" + FormatNumber(outpoint.Index) + "</td></tr>\n"
total += utxo.Amount
}
body += "<table>\n" +
"<caption>UTXOs of address " + addr + "<br/>(unsorted)</caption>\n" +
"<thead>\n" +
"<tr><td><strong>" + FormatKaspa(total) + "</strong></td><th colspan=\"3\" class=\"l\">Current balance, KAS</th></tr>\n" +
"<tr><th>Amount</th><th><abbr title=\"Is conbase transaction\">C</abbr></th>" +
"<th>Transaction Id</th><th><abbr title=\"transation output index\">Idx</abbr></th></tr>\n" +
"</thead>\n" +
"<tbody>\n"
body += tbody +
"</tbody>\n" +
"</table>\n"
}
} else {
response, err := RpcClient.GetBalanceByAddress(addr)
if err == nil {
body += "<p><small>Balance:</small> " + FormatKaspa(response.Balance) + "</p>"
}
body += "<table>\n" +
"<caption>Outputs of address " + addr + "</caption>\n"
txIds := make([]Key, 0)
_ = DbEnv.View(func(txn *lmdb.Txn) (err error) {
cursor, err := txn.OpenCursor(Db)
PanicIfErr(err)
keyPrefix := append([]byte{PrefixAddress}, Serialize(&addr)...)
key, val, err := cursor.Get(keyPrefix, nil, lmdb.SetRange)
if lmdb.IsErrno(err, lmdb.NotFound) {
return err
}
PanicIfErr(err)
for {
equal := true
for i, v := range keyPrefix {
if key[i] != v {
equal = false
break
}
}
if !equal {
break
}
var addressKey AddressTransaction
SerializeValue(false, bytes.NewBuffer(key[1:]), reflect.ValueOf(&addressKey).Elem())
txIds = append(txIds, addressKey.TransactionId)
key, val, err = cursor.Get(nil, nil, lmdb.Next)
if lmdb.IsErrno(err, lmdb.NotFound) {
break
}
PanicIfErr(err)
}
_ = val
return nil
})
tds := ""
totalAmount := uint64(0)
for _, txId := range txIds {
var tx Transaction
dbGet(PrefixTransaction, txId[:], &tx)
idStr := H2s(tx.Id)
amount := uint64(0)
for _, output := range tx.Outputs {
if output.ScriptPublicKeyAddress == addr {
amount += output.Amount
}
}
totalAmount += amount
tds += "<tr><td><a href=\"/tx/" + idStr + "\">" + idStr + "</a></td><td>" + FormatKaspa(amount) + "</td></tr>\n"
}
body += "<thead>\n" +
"<tr><th>Transaction Id (" + FormatNumber(len(txIds)) + ")</th><th>Amount</th></tr>\n" +
//"<tr><th class=\"r\">Total amount of unpruned outputs</th><td>" + FormatKaspa(totalAmount) + "</td></tr>\n" +
"</thead>\n" +
"<tbody>\n" +
tds +
"</tbody>\n" +
"</table>\n"
}
w.Header().Set("Content-Type", "application/xhtml+xml")
w.Write([]byte(Html("<style>\ntd{ text-align: right }</style>\n", body)))
})
http.HandleFunc("/block/", func(w http.ResponseWriter, r *http.Request) {
Log(LogInf, "Get: " + r.URL.Path)
path := strings.Split(r.URL.Path, "/")
if len(path) < 3 {
HttpError(errors.New(fmt.Sprintf("Malformed path: %v", path)), "", w)
return
}
hashSlice, err := hex.DecodeString(path[2])
if err != nil {
HttpError(errors.New(fmt.Sprintf("Bad hash: %v", path)), " decoding hash", w)
return
}
block := Block{}
if !dbGet(PrefixBlock, hashSlice[0:KeyLength], &block) {
HttpError(errors.New("key not found: "+path[2]), "", w)
return
}
body := "<table>\n" +
"<tbody>\n"
metaStruct := reflect.ValueOf(block)
for i := 0; i < metaStruct.NumField(); i++ {
field := metaStruct.Type().Field(i)
metaValue := metaStruct.Field(i)
value := metaValue.Interface()
valueStr := fmt.Sprintf("%v", value)
name := field.Name
title := ToTitle(name)
if hash, isHash := value.(Hash); isHash {
valueStr = H2s(hash)
//valueStr = "<a href=\"/block/" + valueStr + "\">" + valueStr + "</a>"
}
if name == "ParentLevels" {
valueStr = ""
numParents := 0
if metaValue.Len() > 0 {
parents := value.([][]uint64)[0]
numParents = len(parents)
for _, index := range parents {
HashStr := H2s(block.Parents[index])
Suffix := ""
b1, b2 := "", ""
if index == block.SelectedParent {
//Suffix = " (selected)"
b1, b2 = "<strong>", "</strong>"
}
valueStr += "<div><a href=\"/block/" + HashStr + "\">" + b1 + HashStr + b2 + "</a>" + Suffix + "</div>"
}
}
title = fmt.Sprintf("Parents (%d)", numParents)
}
if name == "Parents" || name == "SelectedParent" {
continue
}
if name == "PruningPoint" {
for k, v := range PruningPointsStr {
if v == block.PruningPoint {
valueStr = "<div><a href=\"/block/" + k + "\">" + k + "</a></div>"
break
}
}
}
if name == "BlueScore" {
valueStr = "<a href=\"/bs/" + valueStr + "\">" + valueStr + "</a>"
}
if name == "Bits" {
valueStr = fmt.Sprintf("%x, %x", value, difficulty.CompactToBig(value.(uint32)))
}
if name == "Nonce" || name == "BlueWork" {
valueStr = fmt.Sprintf("%x", value)
if valueStr[0] == '0' {
valueStr = valueStr[1:]
}
}
if name == "Timestamp" {
valueStr = FormatTimestamp(value.(uint64))
}
if name == "TransactionIds" {
if block.IsHeaderOnly {
continue
}
title = fmt.Sprintf("Transactions (%d)", len(block.TransactionIds))
valueStr = ""
for _, transactionId := range block.TransactionIds {
idStr := H2s(transactionId)
valueStr += fmt.Sprintf("<div><a href=\"/tx/%s\">%s</a></div>\n", idStr, idStr)
}
}
body += fmt.Sprintf("<tr><th>%s</th><td>%s</td></tr>\n", title, valueStr)
}
body += "</tbody>\n" +
"</table>\n"
w.Write([]byte(Html("", body)))
})
http.HandleFunc("/tx/", func(w http.ResponseWriter, r *http.Request) {
Log(LogInf, "Get: " + r.URL.Path)
path := strings.Split(r.URL.Path, "/")
if len(path) < 3 {
HttpError(errors.New(fmt.Sprintf("Malformed path: %v", path)), "", w)
return
}
hashSlice, err := hex.DecodeString(path[2])
if err != nil {
HttpError(errors.New(fmt.Sprintf("Bad hash: %v", path)), " decoding hash", w)
return
}
transaction := Transaction{}
if !dbGet(PrefixTransaction, hashSlice[0:KeyLength], &transaction) {
HttpError(errors.New("key not found: "+path[2]), "", w)
return
}
body := "<table>\n" +
"<tbody>\n"
metaStruct := reflect.ValueOf(transaction)
for i := 0; i < metaStruct.NumField(); i++ {
field := metaStruct.Type().Field(i)
metaValue := metaStruct.Field(i)
value := metaValue.Interface()
valueStr := fmt.Sprintf("%v", value)
name := field.Name
title := ToTitle(name)
if hash, isHash := value.(Hash); isHash {
valueStr = H2s(hash)
}
if bytes, isBytes := value.(Bytes); isBytes {
valueStr = B2s(bytes)
}
if name == "Inputs" || name == "Outputs" {
continue
}
body += fmt.Sprintf("<tr><th>%s</th><td>%s</td></tr>\n", title, valueStr)
}
blockKeys := make([]Key, 0)
_ = DbEnv.View(func(txn *lmdb.Txn) (err error) {
cursor, err := txn.OpenCursor(Db)
PanicIfErr(err)
keyPrefix := append([]byte{PrefixTransactionBlock}, transaction.Id[:KeyLength]...)
key, val, err := cursor.Get(keyPrefix, nil, lmdb.SetRange)
if lmdb.IsErrno(err, lmdb.NotFound) {
return err
}
PanicIfErr(err)
for {
var transactionBlock TransactionBlock
SerializeValue(false, bytes.NewBuffer(key[1:]), reflect.ValueOf(&transactionBlock).Elem())
equal := true
for i, v := range keyPrefix {
if key[i] != v {
equal = false
break
}
}
if !equal {
break
}
blockKeys = append(blockKeys, transactionBlock.BlockKey)
key, val, err = cursor.Get(nil, nil, lmdb.Next)
if lmdb.IsErrno(err, lmdb.NotFound) {
break
}
PanicIfErr(err)
}
_ = val
return nil
})
body += "<tr><th>Blocks (" + fmt.Sprintf("%d", len(blockKeys)) + ")</th><td>"
for _, blockKey := range blockKeys {
var block Block
dbGet(PrefixBlock, blockKey[:], &block)
hashStr := H2s(block.Hash)
body += "<div><a href=\"/block/" + hashStr + "\">" + hashStr + "</a></div>\n"
}
txKeys := make([]Key, 0)
_ = DbEnv.View(func(txn *lmdb.Txn) (err error) {
cursor, err := txn.OpenCursor(Db)
PanicIfErr(err)
keyPrefix := append([]byte{PrefixTransactionSpent}, transaction.Id[:KeyLength]...)
key, val, err := cursor.Get(keyPrefix, nil, lmdb.SetRange)
if lmdb.IsErrno(err, lmdb.NotFound) {
return err
}
PanicIfErr(err)
for {
var transactionSpent TransactionSpent
SerializeValue(false, bytes.NewBuffer(key[1:]), reflect.ValueOf(&transactionSpent).Elem())
equal := true
for i, v := range keyPrefix {
if key[i] != v {
equal = false
break
}
}
if !equal {
break
}
txKeys = append(txKeys, transactionSpent.SpentTransactionKey)
key, val, err = cursor.Get(nil, nil, lmdb.Next)
if lmdb.IsErrno(err, lmdb.NotFound) {
break
}
PanicIfErr(err)
}
_ = val
return nil
})
if len(txKeys) > 0 {
body += "<tr><th>Spents (" + fmt.Sprintf("%d", len(txKeys)) + ")</th><td>"
for _, txKey := range txKeys {
var tx Transaction
dbGet(PrefixTransaction, txKey[:], &tx)
idStr := H2s(tx.Id)
body += "<div><a href=\"/tx/" + idStr + "\">" + idStr + "</a></div>\n"
}
}
body += "</tr>\n" +
"</table>\n"
body += "<table>\n" +
"<caption>Inputs (" + fmt.Sprintf("%d", len(transaction.Inputs)) + ")</caption>\n" +
"<thead>\n" +
"<tr>"
metaStruct = reflect.ValueOf(Input{})
for i := 0; i < metaStruct.NumField(); i++ {
body += fmt.Sprintf("<th>%s</th>", ToTitle(metaStruct.Type().Field(i).Name))
}
body += "</tr>\n" +
"</thead>\n" +
"<tbody>"
for _, input := range transaction.Inputs {
body += "<tr>"
metaStruct := reflect.ValueOf(input)
for i := 0; i < metaStruct.NumField(); i++ {
field := metaStruct.Type().Field(i)
metaValue := metaStruct.Field(i)
value := metaValue.Interface()
valueStr := fmt.Sprintf("%v", value)
name := field.Name
_ = name
if hash, isHash := value.(Hash); isHash {
valueStr = H2s(hash)
}
if bytes, isBytes := value.(Bytes); isBytes {
valueStr = B2s(bytes)
}
if name == "PreviousTransactionID" {
valueStr = "<a href=\"" + valueStr + "\">" + valueStr + "</a>"
}
body += fmt.Sprintf("<td>%s</td>\n", valueStr)
}
body += "</tr>\n"
}
body += "</tbody>\n" +
"</table>\n"
body += "<table>\n" +
"<caption>Outputs (" + fmt.Sprintf("%d", len(transaction.Outputs)) + ")</caption>\n" +
"<thead>\n" +
"<tr>"
metaStruct = reflect.ValueOf(Output{})
for i := 0; i < metaStruct.NumField(); i++ {
body += fmt.Sprintf("<th>%s</th>", ToTitle(metaStruct.Type().Field(i).Name))
}
body += "</tr>\n" +
"</thead>\n" +
"<tbody>"
for _, input := range transaction.Outputs {
body += "<tr>"
metaStruct := reflect.ValueOf(input)
for i := 0; i < metaStruct.NumField(); i++ {
field := metaStruct.Type().Field(i)
metaValue := metaStruct.Field(i)
name := field.Name
value := metaValue.Interface()
valueStr := fmt.Sprintf("%v", value)
if name == "Amount" {
valueStr = FormatKaspa(value.(uint64))
}
if name == "ScriptPublicKeyAddress" {
valueStr = "<a href=\"/addr/" + valueStr + "\">" + valueStr + "</a>"
}
if hash, isHash := value.(Hash); isHash {
valueStr = H2s(hash)
}
if bytes, isBytes := value.(Bytes); isBytes {
valueStr = B2s(bytes)
}
body += fmt.Sprintf("<td>%s</td>\n", valueStr)
}
body += "</tr>\n"
}
body += "</tbody>\n" +
"</table>\n"
w.Write([]byte(Html("", body)))
})
Log(LogInf, "HTTP server started, port: %s", *HttpPort)
srv := http.Server{
Addr: ":" + *HttpPort,
WriteTimeout: 45 * time.Second,
}
go srv.ListenAndServe()
}
func HttpError(err error, title string, w http.ResponseWriter) bool {
w.WriteHeader(http.StatusNotFound)
w.Write([]byte(Html("",
"<h1>Error"+title+"</h1>\n"+
"<p>"+fmt.Sprintf("%v", err)+"</p>\n")))
return true
}
func Html(head, body string) string {
return "<!DOCTYPE html>\n" +
"<html xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"en\">\n" +
"<head>\n" +
"<meta charset=\"UTF-8\"/>\n" +
"<meta name=\"viewport\" content=\"width=device-width\"/>\n" +
"<link rel=\"icon\" href=\"/phoenician-kaph.svg\"/>\n" +
"<link rel=\"stylesheet\" href=\"/style.css\"/>\n" +
head +
"<title>Katnip</title>\n" +
"</head>\n" +
"<body>\n" +
body +
"</body>\n" +
"</html>"
}
func isUpper(c byte) bool {
return c >= 'A' && c <= 'Z'
}
func ToTitle(s string) string {
r := make([]byte, 0, len(s)+2)
for i := 0; i < len(s); i++ {
c := s[i]
if isUpper(c) && i > 0 && i+1 < len(s) && !(isUpper(s[i-1]) && isUpper(s[i+1])) {
r = append(r, ' ')
}
r = append(r, c)
}
return string(r)
}
func TrimZeroes(s string) string {
var i int
for i = 0; i < len(s); i++ {
if s[i] != '0' {
break
}
}
s = s[i:]
return s
}