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templates.go
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230 lines (191 loc) · 5.83 KB
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package main
import (
"bytes"
"encoding/base64"
"errors"
"fmt"
"github.com/firelizzard18/blackfriday"
"github.com/firelizzard18/dynrsrc"
"github.com/firelizzard18/gobundle"
"github.com/NotaryChains/NotaryChainCode/notaryapi"
"io/ioutil"
"path/filepath"
"reflect"
"strconv"
"text/template"
)
var mdrdr blackfriday.Renderer
var mdext = 0
var mainTmpl *template.Template
func templates_init() {
mdext |= blackfriday.EXTENSION_NO_INTRA_EMPHASIS
mdext |= blackfriday.EXTENSION_TABLES
mdext |= blackfriday.EXTENSION_FENCED_CODE
mdext |= blackfriday.EXTENSION_AUTOLINK
mdext |= blackfriday.EXTENSION_STRIKETHROUGH
mdext |= blackfriday.EXTENSION_SPACE_HEADERS
mdext |= blackfriday.EXTENSION_PASSTHROUGH_TEMPLATE_ACTION
htmlFlags := 0
htmlFlags |= blackfriday.HTML_USE_SMARTYPANTS
htmlFlags |= blackfriday.HTML_SMARTYPANTS_FRACTIONS
htmlFlags |= blackfriday.HTML_SMARTYPANTS_LATEX_DASHES
mdrdr = blackfriday.HtmlRenderer(htmlFlags, "", "")
err := dynrsrc.CreateDynamicResource(*gobundle.Setup.Directories.Data, func([]byte) {
t, err := buildTemplateTree()
if err != nil { readError(err) }
mainTmpl = t
})
if err != nil { panic(err) }
}
func buildTemplateTree() (main *template.Template, err error) {
funcmap := template.FuncMap{
"tmplref": templateRef,
"enc64": base64.StdEncoding.EncodeToString,
"atoi": func(str string) (int, error) { return strconv.Atoi(str) },
"itoa": func(num int) string { return strconv.Itoa(num) },
"isNil": func(val interface{}) bool { switch val.(type) { case nil: return true }; return false },
"len": func(val interface{}) int { return reflect.ValueOf(val).Len() },
"unnil": func(val interface{}, alt interface{}) interface{} { switch val.(type) { case nil: return alt }; return val },
"entry": templateGetEntry,
"activeEntryIDs": getActiveEntryIDs,
"pendingEntryIDs": getPendingEntryIDs,
"confirmedEntryIDs": getConfirmedEntryIDs,
"isValidEntryID": templateIsValidEntryId,
"isEntrySubmitted": func (idx int) bool { sub := getEntrySubmission(idx); return sub != nil && sub.Host != "" },
"entrySubmission": getEntrySubmission,
"key": templateGetKey,
"keyIDs": getKeyIDs,
"keyCount": getKeyCount,
"isValidKeyID": templateIsValidKeyId,
"keysExceptEntrySigs": templateKeysExceptEntrySigs,
}
main, err = template.New("main").Funcs(funcmap).Parse(`{{template "page.gwp" .}}`)
if err != nil { return }
_, err = main.ParseGlob(gobundle.DataFile("/*.gwp"))
if err != nil { return }
matches, err := filepath.Glob(gobundle.DataFile("/*.md"))
if err != nil { return }
err = parseMarkdownTemplates(main, matches...)
return
}
func parseMarkdownTemplates(t *template.Template, filenames...string) error {
for _, filename := range filenames {
data, err := ioutil.ReadFile(filename)
if err != nil { return err }
data = blackfriday.Markdown(data, mdrdr, mdext)
_, err = t.New(filepath.Base(filename)).Parse(string(data))
if err != nil { return err }
}
return nil
}
func templateRef(name string, data interface{}) (string, error) {
var buf bytes.Buffer
if err := mainTmpl.ExecuteTemplate(&buf, name, data); err != nil {
return "", err
}
return string(buf.Bytes()), nil
}
func templateGetEntry(idx int) (map[string]interface{}, error) {
fentry, ok := entries[idx]
if !ok {
return nil, errors.New(fmt.Sprint("No entry at index", idx))
}
entry := fentry.Entry
count := len(entry.Signatures())
signatures := make([]map[string]interface{}, count)
for i := 0; i < count; i++ {
hash, err := notaryapi.CreateHash(entry.Signatures()[i].Key())
if err != nil { return nil, err }
j := -1
for id, key := range keys{
key, err := notaryapi.CreateHash(key.Public())
if err != nil { return nil, err }
if bytes.Compare(key.Bytes, hash.Bytes) == 0 {
j = id
break
}
}
signatures[i] = map[string]interface{} {
"KeyID": j,
"Hash": hash.Bytes,
}
}
return map[string]interface{}{
"ID": idx,
"Type": entry.TypeName(),
"Signatures": signatures,
"TimeStamp": entry.RealTime(),
"Data": entry.EncodeToString(),
"Submitted": fentry.Submitted,
}, nil
}
func templateIsValidEntryId(id interface{}) bool {
switch id.(type) {
case int:
num := int(reflect.ValueOf(id).Int())
_, ok := entries[num]
return ok
case string:
str := reflect.ValueOf(id).String()
num, err := strconv.Atoi(str)
if err != nil { return false }
return templateIsValidEntryId(num)
default:
return false
}
}
func templateGetKey(idx int) (map[string]interface{}, error) {
key, ok := keys[idx]
if !ok {
return nil, errors.New(fmt.Sprint("No key at index", idx))
}
hash, err := notaryapi.CreateHash(key.Public())
if err != nil { return nil, err }
return map[string]interface{}{
"ID": idx,
"Type": notaryapi.KeyTypeName(key.KeyType()),
"Hash": hash.Bytes,
}, nil
}
func templateIsValidKeyId(id interface{}) bool {
switch id.(type) {
case int:
num := int(reflect.ValueOf(id).Int())
_, ok := keys[num]
return ok
case string:
str := reflect.ValueOf(id).String()
num, err := strconv.Atoi(str)
if err != nil { return false }
return templateIsValidKeyId(num)
default:
return false
}
}
func templateKeysExceptEntrySigs(entry_id int) (keyIDs []int, err error) {
sigs := getEntry(entry_id).Signatures()
sigHashes := make([]*notaryapi.Hash, len(sigs))
for index, sig := range sigs {
sigHashes[index], err = notaryapi.CreateHash(sig.Key())
if err != nil { return nil, err }
}
keyHashes := make(map[int]*notaryapi.Hash)
for id, key := range keys {
keyHashes[id], err = notaryapi.CreateHash(key.Public())
if err != nil { return nil, err }
}
i := 0
keyIDs = make([]int, len(keyHashes))
main:
for keyIndex, keyHash := range keyHashes {
for _, sigHash := range sigHashes {
if bytes.Compare(keyHash.Bytes, sigHash.Bytes) == 0 {
continue main
}
}
keyIDs[i] = keyIndex
i++
}
keyIDs = keyIDs[:i]
return keyIDs, nil
}