1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
package scraper
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"regexp"
"strings"
"github.com/ffuf/ffuf/v2/pkg/ffuf"
"github.com/PuerkitoBio/goquery"
)
type ScraperRule struct {
Name string `json:"name"`
Rule string `json:"rule"`
Target string `json:"target"`
compiledRule *regexp.Regexp
Type string `json:"type"`
OnlyMatched bool `json:"onlymatched"`
Action []string `json:"action"`
}
type ScraperGroup struct {
Rules []*ScraperRule `json:"rules"`
Name string `json:"groupname"`
Active bool `json:"active"`
}
type Scraper struct {
Rules []*ScraperRule
}
func readGroupFromFile(filename string) (ScraperGroup, error) {
data, err := os.ReadFile(filename)
if err != nil {
return ScraperGroup{Rules: make([]*ScraperRule, 0)}, err
}
sc := ScraperGroup{}
err = json.Unmarshal([]byte(data), &sc)
return sc, err
}
func FromDir(dirname string, activestr string) (ffuf.Scraper, ffuf.Multierror) {
scr := Scraper{Rules: make([]*ScraperRule, 0)}
errs := ffuf.NewMultierror()
activegrps := parseActiveGroups(activestr)
all_files, err := os.ReadDir(ffuf.SCRAPERDIR)
if err != nil {
errs.Add(err)
return &scr, errs
}
for _, filename := range all_files {
if filename.Type().IsRegular() && strings.HasSuffix(filename.Name(), ".json") {
sg, err := readGroupFromFile(filepath.Join(dirname, filename.Name()))
if err != nil {
cerr := fmt.Errorf("%s : %s", filepath.Join(dirname, filename.Name()), err)
errs.Add(cerr)
continue
}
if (sg.Active && isActive("all", activegrps)) || isActive(sg.Name, activegrps) {
for _, r := range sg.Rules {
err = r.init()
if err != nil {
cerr := fmt.Errorf("%s : %s", filepath.Join(dirname, filename.Name()), err)
errs.Add(cerr)
continue
}
scr.Rules = append(scr.Rules, r)
}
}
}
}
return &scr, errs
}
// FromFile initializes a scraper instance and reads rules from a file
func (s *Scraper) AppendFromFile(path string) error {
sg, err := readGroupFromFile(path)
if err != nil {
return err
}
for _, r := range sg.Rules {
err = r.init()
if err != nil {
continue
}
s.Rules = append(s.Rules, r)
}
return err
}
func (s *Scraper) Execute(resp *ffuf.Response, matched bool) []ffuf.ScraperResult {
res := make([]ffuf.ScraperResult, 0)
for _, rule := range s.Rules {
if !matched && rule.OnlyMatched {
// pass this rule as there was no match
continue
}
sourceData := ""
if rule.Target == "body" {
sourceData = string(resp.Data)
} else if rule.Target == "headers" {
sourceData = headerString(resp.Headers)
} else {
sourceData = headerString(resp.Headers) + string(resp.Data)
}
val := rule.Check(sourceData)
if len(val) > 0 {
res = append(res, ffuf.ScraperResult{
Name: rule.Name,
Type: rule.Type,
Action: rule.Action,
Results: val,
})
}
}
return res
}
// init initializes the scraper rule, and returns an error in case there's an error in the syntax
func (r *ScraperRule) init() error {
var err error
if r.Type == "regexp" {
r.compiledRule, err = regexp.Compile(r.Rule)
if err != nil {
return err
}
}
return err
}
func (r *ScraperRule) Check(data string) []string {
if r.Type == "regexp" {
return r.checkRegexp(data)
} else if r.Type == "query" {
return r.checkQuery(data)
}
return []string{}
}
func (r *ScraperRule) checkQuery(data string) []string {
val := make([]string, 0)
doc, err := goquery.NewDocumentFromReader(strings.NewReader(data))
if err != nil {
return []string{}
}
doc.Find(r.Rule).Each(func(i int, sel *goquery.Selection) {
val = append(val, sel.Text())
})
return val
}
func (r *ScraperRule) checkRegexp(data string) []string {
val := make([]string, 0)
if r.compiledRule != nil {
res := r.compiledRule.FindAllStringSubmatch(data, -1)
for _, grp := range res {
val = append(val, grp...)
}
return val
}
return []string{}
}
|
