/
main.go
240 lines (205 loc) · 5.61 KB
/
main.go
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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
package main
import (
"crypto/tls"
"encoding/json"
"flag"
"fmt"
"github.com/bkeroack/libwordentropy"
"github.com/eknkc/amber"
"html/template"
"log"
"net/http"
"os"
"strconv"
"strings"
)
const (
TLS_CERT = "tls/cert-unified.pem"
TLS_KEY = "tls/cert.key"
COUNT_DEFAULT = 5
LENGTH_DEFAULT = 5
LISTEN_PORT = 443
STATS_PATH = "data/stats/"
DATA_PATH = "data/"
URL_FILE = "data/plot_urls.txt"
)
var g *wordentropy.Generator
var templates = map[string]*template.Template{}
var template_name_map = map[string]string{}
var template_names = [...]string{
"main.amber",
"about.amber",
"random.amber",
}
var localFlag *bool
func init() {
localFlag = flag.Bool("local", false, "local testing mode (do not generate plots, bind to high port)")
flag.Parse()
gomaxprocs := os.ExpandEnv("${GOMAXPROCS}")
if gomaxprocs == "" {
log.Printf("GOMAXPROCS not set; default used (1)\n")
} else {
log.Printf("GOMAXPROCS: %v\n", gomaxprocs)
}
}
func main() {
log.Printf("Loading word map")
var err error
g, err = wordentropy.LoadGenerator(&wordentropy.WordListOptions{
Wordlist: "data/part-of-speech.txt",
Offensive: "data/offensive.txt",
})
if err != nil {
log.Fatalf("Error loading wordlist: %v\n", err)
}
word_map := g.GetWordMap()
wordlist_stats := GenerateStatistics(word_map)
for k, v := range wordlist_stats {
log.Printf("Word type: %v; total_count: %v; largest_word: %v\n",
k, v.Total_count, v.Max_char_count)
}
write_distribution_csv()
port := LISTEN_PORT
if *localFlag {
port = 4343
} else {
generate_plots()
get_plots(word_map, wordlist_stats)
}
compile_templates()
config := &tls.Config{MinVersion: tls.VersionTLS10}
server := &http.Server{Addr: fmt.Sprintf("0.0.0.0:%v", port), Handler: nil, TLSConfig: config}
log.Printf("Starting and listening on %v\n", port)
http.Handle("/static/", http.StripPrefix("/static", http.FileServer(http.Dir("./static"))))
http.HandleFunc("/", Root)
http.HandleFunc("/about", About)
http.HandleFunc("/how-random", Random)
http.HandleFunc("/passphrases", Passphrases)
err = server.ListenAndServeTLS(TLS_CERT, TLS_KEY)
if err != nil {
log.Fatalf("Error starting HTTP listener: %v\n", err)
}
}
func compile_template(n string) *template.Template {
compiler := amber.New()
err := compiler.ParseFile(fmt.Sprintf("views/%v", n))
if err != nil {
log.Fatalf("Bad template: %v: %v\n", n, err)
}
tpl, err := compiler.Compile()
if err != nil {
log.Fatalf("Error compiling template: %v: %v\n", n, err)
}
return tpl
}
func compile_templates() {
log.Printf("Compiling templates...\n")
templates = make(map[string]*template.Template)
template_name_map = make(map[string]string)
for t := range template_names {
template := template_names[t]
n := strings.Split(template, ".")[0]
templates[n] = compile_template(template)
template_name_map[n] = template
}
log.Printf("Compilation complete\n")
}
func execute_template(n string, w http.ResponseWriter, r *http.Request, data interface{}) {
log.Printf("%v\t%v\t%v\n", n, r.RemoteAddr, r.UserAgent())
var err error
if !*localFlag {
err = templates[n].Execute(w, data)
} else {
tmpl := compile_template(template_name_map[n])
err = tmpl.Execute(w, data)
}
if err != nil {
log.Printf("Error executing template: %v: %v\n", n, err)
}
}
func Root(w http.ResponseWriter, r *http.Request) {
execute_template("main", w, r, nil)
}
func About(w http.ResponseWriter, r *http.Request) {
execute_template("about", w, r, nil)
}
func Random(w http.ResponseWriter, r *http.Request) {
log.Printf("random\t%v\t%v\n", r.RemoteAddr, r.UserAgent())
data := struct {
Word_stats []stat_ui
Plots map[string]string
Combined_plot_url string
}{
sanitized_stats,
plot_map,
combined_plot_url,
}
execute_template("random", w, r, &data)
}
func process_passphrases_options(o *wordentropy.GenerateOptions, qv map[string][]string) (bool, string) {
if val, ok := qv["count"]; ok {
count, err := strconv.Atoi(val[0])
if err != nil || count < 0 || count > 99 {
return false, fmt.Sprintf("Bad count parameter passed: %v; %v\n", err, val[0])
}
o.Count = uint(count)
}
if val, ok := qv["length"]; ok {
length, err := strconv.Atoi(val[0])
if err != nil || length < 0 || length > 99 {
return false, fmt.Sprintf("Bad length parameter passed: %v; %v\n", err, val[0])
}
o.Length = uint(length)
}
if val, ok := qv["prudish"]; ok {
if val[0] == "true" {
o.Prudish = true
}
}
if val, ok := qv["no_spaces"]; ok {
if val[0] == "true" {
o.No_spaces = true
}
}
if val, ok := qv["add_digit"]; ok {
if val[0] == "true" {
o.Add_digit = true
}
}
if val, ok := qv["add_symbol"]; ok {
if val[0] == "true" {
o.Add_symbol = true
}
}
return true, ""
}
func Passphrases(w http.ResponseWriter, r *http.Request) {
query_values := r.URL.Query()
options := wordentropy.GenerateOptions{}
w.Header().Set("Content-Type", "application/json")
type passphrase_output struct {
Count uint
Length uint
Passphrases []string
}
var output passphrase_output
ok, msg := process_passphrases_options(&options, query_values)
if !ok {
emit_json_error(w, msg, 401)
}
log.Printf("passphrases\toptions:%v\t%v\t%v\n", options, r.RemoteAddr, r.UserAgent())
passphrases, err := g.GeneratePassphrases(&options)
if err != nil {
emit_json_error(w, "Error generating passphrases", 500)
}
output.Count = options.Count
output.Length = options.Length
output.Passphrases = passphrases
//emit json
j, err := json.Marshal(output)
if err != nil {
log.Printf("ERROR marshalling json: %v\n", err)
http.Error(w, "{ \"error\": \"Internal Server Error\" }", 500)
}
w.Write(j)
}