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abstraction.go
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abstraction.go
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package optimization
import (
"sort"
"strings"
)
// Abstraction is abstract for optimization
func Abstraction(s, payload string) []string {
var mapdata []string
bodyarr := strings.Split(s, "\n")
lineSize := 0
mode := 1
position := 1
for _, text := range bodyarr {
pointer := make(map[int]string)
ptn := FindIndexesInLine(text, payload, lineSize, 0)
doubleQuote := FindIndexesInLine(text, "\"", lineSize, 0)
singleQuote := FindIndexesInLine(text, "'", lineSize, 0)
backtick := FindIndexesInLine(text, "`", lineSize, 0)
startTag := FindIndexesInLine(text, "<", lineSize, 0)
endTag := FindIndexesInLine(text, ">", lineSize, 0)
startScript := FindIndexesInLine(text, "<script", lineSize, 0)
endScript := FindIndexesInLine(text, "</script", lineSize, 0)
// script와 태그를 구별하기 위해 tag부터(덮어써지도록)
setPointer(startTag, pointer, "tag-start")
setPointer(endTag, pointer, "tag-end")
setPointer(startScript, pointer, "script-start")
setPointer(endScript, pointer, "script-end")
setPointer(doubleQuote, pointer, "double")
setPointer(singleQuote, pointer, "single")
setPointer(backtick, pointer, "backtick")
setPointer(ptn, pointer, payload)
lineSize = lineSize + len(text)
keys := make([]int, 0, len(pointer))
for k := range pointer {
keys = append(keys, k)
}
sort.Ints(keys)
modeMap := make(map[int]string)
positionMap := make(map[int]string)
modeMap[1] = "inHTML"
modeMap[2] = "inJS"
modeMap[3] = "inATTR"
modeMap[4] = "inTagScript"
positionMap[1] = "none"
positionMap[2] = "double"
positionMap[3] = "single"
positionMap[4] = "backtick"
positionMap[5] = "comment"
positionMap[6] = "pre"
positionMap[7] = "textarea"
// 1 none
// 2 double
// 3 single
// 4 backtick
// 5 comment
// 6 pre
// 7 textarea
for _, k := range keys {
if pointer[k] == "script-start" {
if (mode == 1) || ((mode == 3) && (position == 1)) {
mode = 4
}
}
if pointer[k] == "script-end" {
if (mode != 3) && (mode != 4) {
mode = 1
}
}
if pointer[k] == "tag-start" {
if mode == 1 {
mode = 3
}
}
if pointer[k] == "tag-end" {
if mode == 4 {
mode = 2
} else if mode == 3 || position == 1 {
mode = 1
}
}
if pointer[k] == "double" {
if (mode == 2 || mode == 3) && position == 1 {
position = 2
} else if (mode == 2 || mode == 3) && position == 2 {
position = 1
}
}
if pointer[k] == "single" {
if (mode == 2 || mode == 3) && position == 1 {
position = 3
} else if (mode == 2 || mode == 3) && position == 3 {
position = 1
}
}
if pointer[k] == "backtick" {
if (mode == 2) && position == 1 {
position = 4
} else if (mode == 2) && position == 4 {
position = 1
}
}
if pointer[k] == payload {
mapdata = append(mapdata, modeMap[mode]+"-"+positionMap[position])
}
}
}
//err := error
return mapdata
}
// setPointer is settting pointer
func setPointer(arr []int, pointer map[int]string, key string) {
if len(arr) > 0 {
for k, v := range arr {
_ = k
pointer[v] = key
}
}
}
// FindIndexesInLine is check included key data in line
func FindIndexesInLine(text, key string, lineSize, pointing int) []int {
var indexes []int
pointer := strings.Index(text, key)
if pointer != -1 {
tempIndexes := FindIndexesInLine(text[pointer+1:], key, lineSize, pointer+pointing+1)
indexes = append(indexes, pointer+lineSize+pointing)
for _, v := range tempIndexes {
indexes = append(indexes, v)
}
}
return indexes
}