├── .github
    ├── CODEOWNERS
    ├── ISSUE_TEMPLATE.md
    ├── PULL_REQUEST_TEMPLATE.md
    └── workflows
    │   └── main.yml
├── .gitignore
├── CONTRIBUTING.md
├── Ch02
    ├── 02_02
    │   ├── db-shell.sh
    │   ├── db.go
    │   ├── fix
    │   │   ├── db.go
    │   │   └── insert.sql
    │   ├── insert.sql
    │   ├── log1.txt
    │   ├── log2.txt
    │   ├── main.go
    │   ├── run-database.sh
    │   └── schema.sql
    ├── 02_03
    │   ├── client
    │   │   └── client.go
    │   ├── fix
    │   │   └── httpd.go
    │   └── httpd.go
    ├── 02_04
    │   ├── fix
    │   │   └── httpd.go
    │   ├── httpd.go
    │   └── pi.txt
    ├── 02_05
    │   ├── fix
    │   │   └── httpd.go
    │   ├── httpd.go
    │   └── payment.json
    ├── challenge
    │   ├── activity-1.json
    │   ├── activity-2.json
    │   └── activity.go
    └── solution
    │   ├── activity-1.json
    │   ├── activity-2.json
    │   └── activity.go
├── Ch03
    ├── 03_02
    │   ├── fix
    │   │   └── httpd.go
    │   └── httpd.go
    ├── 03_03
    │   ├── fix
    │   │   └── httpd.go
    │   ├── httpd.go
    │   └── users.go
    ├── 03_04
    │   ├── audit.go
    │   ├── auth.go
    │   ├── fix
    │   │   └── httpd.go
    │   └── httpd.go
    ├── challenge
    │   ├── auth.go
    │   ├── httpd.go
    │   └── status.go
    └── solution
    │   ├── auth.go
    │   ├── httpd.go
    │   └── status.go
├── Ch04
    ├── 04_02
    │   ├── auth.go
    │   ├── health.go
    │   └── httpd.go
    ├── 04_03
    │   ├── auth.go
    │   └── httpd.go
    ├── challenge
    │   ├── auth.go
    │   └── httpd.go
    └── solution
    │   ├── auth.go
    │   └── httpd.go
├── Ch05
    ├── 05_02
    │   ├── gen-cert.sh
    │   └── httpd.go
    ├── 05_03
    │   └── httpd.go
    ├── 05_05
    │   ├── auth.go
    │   └── httpd.go
    ├── challenge
    │   ├── auth.go
    │   └── httpd.go
    └── solution
    │   ├── auth.go
    │   └── httpd.go
├── Ch06
    └── 06_03
    │   └── url_size.go
├── LICENSE
├── NOTICE
└── README.md


/.github/CODEOWNERS:
--------------------------------------------------------------------------------
1 | # Codeowners for these exercise files:
2 | # * (asterisk) deotes "all files and folders"
3 | # Example: * @producer @instructor
4 | 


--------------------------------------------------------------------------------
/.github/ISSUE_TEMPLATE.md:
--------------------------------------------------------------------------------
 1 | <!--
 2 | BEFORE POSTING YOUR ISSUE:
 3 | - These comments won't show up when you submit the issue.
 4 | - Please use the sections below to provide information about the issue.
 5 | - Be specific: Add as much detail as possible.
 6 | -->
 7 | 
 8 | ## Issue Overview
 9 | <!-- A brief overview of the issue --->
10 | 
11 | ## Describe your environment
12 | <!-- Provide details about your environment: what editor, browser, and other software you are using and any other specifics to your setup -->
13 | 
14 | ## Steps to Reproduce
15 | <!-- Provide an unambiguous set of steps to reproduce this bug. Include code to reproduce, if relevant. Include a live link if available. -->
16 | 1.
17 | 2.
18 | 3.
19 | 4.
20 | 
21 | ## Expected Behavior
22 | <!-- What behavior did you expect? -->
23 | 
24 | ## Current Behavior
25 | <!-- What happened instead of the expected behavior? Describe the difference. -->
26 | 
27 | ## Possible Solution
28 | <!-- Optional: Do you have a fix or a suggestion on how to fix the issue? -->
29 | 
30 | ## Screenshots / Video
31 | <!-- Optional: Add any screenshots or video of the issue if available. -->
32 | 
33 | ## Related Issues
34 | <!-- List related issues -->
35 | 


--------------------------------------------------------------------------------
/.github/PULL_REQUEST_TEMPLATE.md:
--------------------------------------------------------------------------------
1 | <!-- This repository *does not* accept pull requests (PRs). All pull requests will be closed. See CONTRIBUTING.md for further details. -->
2 | 


--------------------------------------------------------------------------------
/.github/workflows/main.yml:
--------------------------------------------------------------------------------
 1 | name: Copy To Branches
 2 | on:
 3 |   workflow_dispatch:
 4 | jobs:
 5 |   copy-to-branches:
 6 |     runs-on: ubuntu-latest
 7 |     steps:
 8 |       - uses: actions/checkout@v2
 9 |         with:
10 |           fetch-depth: 0
11 |       - name: Copy To Branches Action
12 |         uses: planetoftheweb/copy-to-branches@v1
13 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | .DS_Store
2 | node_modules
3 | .tmp
4 | npm-debug.log
5 | 


--------------------------------------------------------------------------------
/CONTRIBUTING.md:
--------------------------------------------------------------------------------
1 | 
2 | Contribution Agreement
3 | ======================
4 | 
5 | This repository does not accept pull requests (PRs). All pull requests will be closed.
6 | 
7 | However, if any contributions (through pull requests, issues, feedback or otherwise) are provided, as a contributor, you represent that the code you submit is your original work or that of your employer (in which case you represent you have the right to bind your employer). By submitting code (or otherwise providing feedback), you (and, if applicable, your employer) are licensing the submitted code (and/or feedback) to LinkedIn and the open source community subject to the BSD 2-Clause license.
8 | 


--------------------------------------------------------------------------------
/Ch02/02_02/db-shell.sh:
--------------------------------------------------------------------------------
1 | #!/bin/bash
2 | 
3 | docker run \
4 |     --rm -it \
5 |     --network=host \
6 |     postgres:13-alpine \
7 |     psql -U postgres -h localhost


--------------------------------------------------------------------------------
/Ch02/02_02/db.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"database/sql"
 5 | 	_ "embed"
 6 | 	"fmt"
 7 | 	"time"
 8 | )
 9 | 
10 | var (
11 | 	//go:embed schema.sql
12 | 	schemaSQL string
13 | 
14 | 	//go:embed insert.sql
15 | 	insertSQL string
16 | )
17 | 
18 | func createTables(db *sql.DB) error {
19 | 	_, err := db.Exec(schemaSQL)
20 | 	return err
21 | }
22 | 
23 | func insertLog(db *sql.DB, time time.Time, message string) error {
24 | 	ts := time.Format("2006-01-02 15:04:05") // Format time for SQL
25 | 	sql := fmt.Sprintf(insertSQL, ts, message)
26 | 	_, err := db.Exec(sql)
27 | 	return err
28 | }
29 | 


--------------------------------------------------------------------------------
/Ch02/02_02/fix/db.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"database/sql"
 5 | 	_ "embed"
 6 | 	"time"
 7 | )
 8 | 
 9 | var (
10 | 	//go:embed schema.sql
11 | 	schemaSQL string
12 | 
13 | 	//go:embed insert.sql
14 | 	insertSQL string
15 | )
16 | 
17 | func createTables(db *sql.DB) error {
18 | 	_, err := db.Exec(schemaSQL)
19 | 	return err
20 | }
21 | 
22 | func insertLog(db *sql.DB, time time.Time, message string) error {
23 | 	_, err := db.Exec(insertSQL, time, message)
24 | 	return err
25 | }
26 | 


--------------------------------------------------------------------------------
/Ch02/02_02/fix/insert.sql:
--------------------------------------------------------------------------------
1 | INSERT INTO logs (time, message) VALUES ($1, $2);


--------------------------------------------------------------------------------
/Ch02/02_02/insert.sql:
--------------------------------------------------------------------------------
1 | INSERT INTO logs (time, message) VALUES ('%s', '%s');


--------------------------------------------------------------------------------
/Ch02/02_02/log1.txt:
--------------------------------------------------------------------------------
1 | error: Please reinstall universe and reboot!


--------------------------------------------------------------------------------
/Ch02/02_02/log2.txt:
--------------------------------------------------------------------------------
1 | Hacked!'); DROP TABLE logs; --"


--------------------------------------------------------------------------------
/Ch02/02_02/main.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"database/sql"
 5 | 	"io"
 6 | 	"log"
 7 | 	"os"
 8 | 	"time"
 9 | 
10 | 	_ "github.com/lib/pq"
11 | )
12 | 
13 | func main() {
14 | 	data, err := io.ReadAll(os.Stdin)
15 | 	if err != nil {
16 | 		log.Fatal(err)
17 | 	}
18 | 	msg := string(data)
19 | 
20 | 	db, err := sql.Open("postgres", "user=postgres password=s3cr3t sslmode=disable")
21 | 	if err != nil {
22 | 		log.Fatal(err)
23 | 	}
24 | 	defer db.Close()
25 | 
26 | 	if err := createTables(db); err != nil {
27 | 		log.Fatal(err)
28 | 	}
29 | 
30 | 	if err := insertLog(db, time.Now(), msg); err != nil {
31 | 		log.Fatal(err)
32 | 	}
33 | }
34 | 


--------------------------------------------------------------------------------
/Ch02/02_02/run-database.sh:
--------------------------------------------------------------------------------
1 | #!/bin/bash
2 | 
3 | docker run \
4 |     -e POSTGRES_HOST_AUTH_METHOD=trust \
5 |     -p 5432:5432 \
6 |     postgres:13-alpine


--------------------------------------------------------------------------------
/Ch02/02_02/schema.sql:
--------------------------------------------------------------------------------
1 | CREATE TABLE IF NOT EXISTS logs (
2 |     time TIMESTAMP,
3 |     message TEXT
4 | );


--------------------------------------------------------------------------------
/Ch02/02_03/client/client.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"io"
 6 | 	"log"
 7 | 	"net/http"
 8 | 	"time"
 9 | )
10 | 
11 | var message = []byte("slow and steady wins the race ")
12 | 
13 | type SlowReader struct {
14 | 	i    int
15 | 	max  int
16 | 	read int
17 | }
18 | 
19 | // Read implements io.Reader
20 | func (s *SlowReader) Read(p []byte) (int, error) {
21 | 	time.Sleep(100 * time.Millisecond)
22 | 	if s.i >= s.max {
23 | 		return 0, io.EOF
24 | 	}
25 | 	s.i++
26 | 
27 | 	size := 0
28 | 	for size < len(p) {
29 | 		size += copy(p[size:], message)
30 | 	}
31 | 	s.read += len(p)
32 | 	return len(p), nil
33 | }
34 | 
35 | func main() {
36 | 	body := &SlowReader{max: 10}
37 | 	start := time.Now()
38 | 	resp, err := http.Post("http://localhost:8080/", "text/plain", body)
39 | 	if err != nil {
40 | 		log.Fatal(err)
41 | 	}
42 | 	if resp.StatusCode != http.StatusOK {
43 | 		log.Fatalf("error: %d %s", resp.StatusCode, resp.Status)
44 | 	}
45 | 
46 | 	duration := time.Since(start)
47 | 	fmt.Printf("sent %d bytes in %v\n", body.read, duration)
48 | }
49 | 


--------------------------------------------------------------------------------
/Ch02/02_03/fix/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"io"
 6 | 	"log"
 7 | 	"net/http"
 8 | 	"time"
 9 | )
10 | 
11 | func handler(w http.ResponseWriter, r *http.Request) {
12 | 	defer r.Body.Close()
13 | 
14 | 	start := time.Now()
15 | 	n, err := io.Copy(io.Discard, r.Body)
16 | 	if err != nil {
17 | 		http.Error(w, "can't copy", http.StatusBadRequest)
18 | 		return
19 | 	}
20 | 
21 | 	log.Printf("%d bytes in %v", n, time.Since(start))
22 | 	fmt.Fprintf(w, "%d bytes digested", n)
23 | }
24 | 
25 | func main() {
26 | 	http.HandleFunc("/", handler)
27 | 
28 | 	srv := &http.Server{
29 | 		Addr:              ":8080",
30 | 		ReadTimeout:       1 * time.Second,
31 | 		WriteTimeout:      1 * time.Second,
32 | 		IdleTimeout:       10 * time.Second,
33 | 		ReadHeaderTimeout: 2 * time.Second,
34 | 	}
35 | 
36 | 	if err := srv.ListenAndServe(); err != nil {
37 | 		log.Fatal(err)
38 | 	}
39 | }
40 | 


--------------------------------------------------------------------------------
/Ch02/02_03/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"io"
 6 | 	"log"
 7 | 	"net/http"
 8 | 	"time"
 9 | )
10 | 
11 | func handler(w http.ResponseWriter, r *http.Request) {
12 | 	defer r.Body.Close()
13 | 
14 | 	start := time.Now()
15 | 	n, err := io.Copy(io.Discard, r.Body)
16 | 	if err != nil {
17 | 		http.Error(w, "can't copy", http.StatusBadRequest)
18 | 		return
19 | 	}
20 | 
21 | 	log.Printf("%d bytes in %v", n, time.Since(start))
22 | 	fmt.Fprintf(w, "%d bytes digested", n)
23 | }
24 | 
25 | func main() {
26 | 	http.HandleFunc("/", handler)
27 | 
28 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
29 | 		log.Fatal(err)
30 | 	}
31 | }
32 | 


--------------------------------------------------------------------------------
/Ch02/02_04/fix/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"io"
 6 | 	"log"
 7 | 	"net/http"
 8 | )
 9 | 
10 | const (
11 | 	maxSize = 100 * 1024 // 100KB
12 | )
13 | 
14 | func logHandler(w http.ResponseWriter, r *http.Request) {
15 | 	defer r.Body.Close()
16 | 
17 | 	data, err := io.ReadAll(io.LimitReader(r.Body, maxSize))
18 | 	if err != nil {
19 | 		http.Error(w, "can't read", http.StatusBadRequest)
20 | 		return
21 | 	}
22 | 
23 | 	// TODO: Save in database
24 | 
25 | 	fmt.Fprintf(w, "%d bytes stored\n", len(data))
26 | }
27 | 
28 | func main() {
29 | 	http.HandleFunc("/log", logHandler)
30 | 
31 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
32 | 		log.Fatal(err)
33 | 	}
34 | }
35 | 


--------------------------------------------------------------------------------
/Ch02/02_04/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"io"
 6 | 	"log"
 7 | 	"net/http"
 8 | )
 9 | 
10 | func logHandler(w http.ResponseWriter, r *http.Request) {
11 | 	defer r.Body.Close()
12 | 
13 | 	data, err := io.ReadAll(r.Body)
14 | 	if err != nil {
15 | 		http.Error(w, "can't read", http.StatusBadRequest)
16 | 		return
17 | 	}
18 | 
19 | 	// TODO: Save in database
20 | 
21 | 	fmt.Fprintf(w, "%d bytes stored\n", len(data))
22 | }
23 | 
24 | func main() {
25 | 	http.HandleFunc("/log", logHandler)
26 | 
27 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
28 | 		log.Fatal(err)
29 | 	}
30 | }
31 | 


--------------------------------------------------------------------------------
/Ch02/02_05/fix/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"encoding/json"
 5 | 	"fmt"
 6 | 	"log"
 7 | 	"net/http"
 8 | 	"time"
 9 | )
10 | 
11 | type Payment struct {
12 | 	Time   time.Time
13 | 	User   string
14 | 	To     string
15 | 	Amount float64
16 | }
17 | 
18 | func (p *Payment) Validate() error {
19 | 	if p.Amount <= 0 {
20 | 		return fmt.Errorf("bad Amount in %#v", p)
21 | 	}
22 | 
23 | 	return nil
24 | }
25 | 
26 | func paymenetHandler(w http.ResponseWriter, r *http.Request) {
27 | 	defer r.Body.Close()
28 | 
29 | 	dec := json.NewDecoder(r.Body)
30 | 	var p Payment
31 | 	if err := dec.Decode(&p); err != nil {
32 | 		http.Error(w, "bad JSON", http.StatusBadRequest)
33 | 		return
34 | 	}
35 | 
36 | 	if err := p.Validate(); err != nil {
37 | 		log.Printf("error: paymenetHandler - %s", err)
38 | 		http.Error(w, "bad data", http.StatusBadRequest)
39 | 		return
40 | 	}
41 | 
42 | 	// TODO: Process payment
43 | 
44 | 	fmt.Fprintf(w, "OK\n")
45 | }
46 | 
47 | func main() {
48 | 	http.HandleFunc("/payment", paymenetHandler)
49 | 
50 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
51 | 		log.Fatal(err)
52 | 	}
53 | }
54 | 


--------------------------------------------------------------------------------
/Ch02/02_05/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"encoding/json"
 5 | 	"fmt"
 6 | 	"log"
 7 | 	"net/http"
 8 | 	"time"
 9 | )
10 | 
11 | type Payment struct {
12 | 	Time   time.Time
13 | 	User   string
14 | 	To     string
15 | 	Amount float64
16 | }
17 | 
18 | func paymenetHandler(w http.ResponseWriter, r *http.Request) {
19 | 	defer r.Body.Close()
20 | 
21 | 	dec := json.NewDecoder(r.Body)
22 | 	var p Payment
23 | 	if err := dec.Decode(&p); err != nil {
24 | 		log.Printf("error: %s", err)
25 | 		http.Error(w, "bad JSON", http.StatusBadRequest)
26 | 		return
27 | 	}
28 | 
29 | 	// TODO: Process payment
30 | 
31 | 	fmt.Fprintf(w, "OK\n")
32 | }
33 | 
34 | func main() {
35 | 	http.HandleFunc("/payment", paymenetHandler)
36 | 
37 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
38 | 		log.Fatal(err)
39 | 	}
40 | }
41 | 


--------------------------------------------------------------------------------
/Ch02/02_05/payment.json:
--------------------------------------------------------------------------------
1 | {
2 |   "time": "2021-09-23T12:59:58.011322579+03:00",
3 |   "user": "Wile E. Coyote",
4 |   "to": "ACME",
5 |   "amount": -10000
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch02/challenge/activity-1.json:
--------------------------------------------------------------------------------
1 | {
2 |   "user": "bugs",
3 |   "start_time": "2021-09-23T13:00:59.105459499-06:00",
4 |   "end_time": "2021-09-23T23:17:13.191-06:00",
5 |   "description": "Digging tunnel near Albuquerque"
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch02/challenge/activity-2.json:
--------------------------------------------------------------------------------
1 | {
2 |   "user": "",
3 |   "start_time": "2021-09-23T13:00:59.105459499-06:00",
4 |   "end_time": "2021-09-21T23:17:13.191000923-06:00",
5 |   "description": "Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near 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Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque "
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch02/challenge/activity.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"encoding/json"
 5 | 	"io"
 6 | 	"log"
 7 | 	"os"
 8 | 	"time"
 9 | )
10 | 
11 | type Activity struct {
12 | 	User        string    `json:"user"`
13 | 	StartTime   time.Time `json:"start_time"`
14 | 	EndTime     time.Time `json:"end_time"`
15 | 	Description string    `json:"description"`
16 | }
17 | 
18 | func processActivity(r io.Reader) error {
19 | 	var act Activity
20 | 
21 | 	dec := json.NewDecoder(r)
22 | 	if err := dec.Decode(&act); err != nil {
23 | 		return err
24 | 	}
25 | 
26 | 	log.Printf("activity: %#v", act)
27 | 	// TODO: Store in database
28 | 
29 | 	return nil
30 | }
31 | 
32 | func main() {
33 | 	if err := processActivity(os.Stdin); err != nil {
34 | 		log.Fatal(err)
35 | 	}
36 | }
37 | 


--------------------------------------------------------------------------------
/Ch02/solution/activity-1.json:
--------------------------------------------------------------------------------
1 | {
2 |   "user": "bugs",
3 |   "start_time": "2021-09-23T13:00:59.105459499-06:00",
4 |   "end_time": "2021-09-23T23:17:13.191-06:00",
5 |   "description": "Digging tunnel near Albuquerque"
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch02/solution/activity-2.json:
--------------------------------------------------------------------------------
1 | {
2 |   "user": "",
3 |   "start_time": "2021-09-23T13:00:59.105459499-06:00",
4 |   "end_time": "2021-09-21T23:17:13.191000923-06:00",
5 |   "description": "Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque Digging tunnel near Albuquerque "
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch02/solution/activity.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"encoding/json"
 5 | 	"fmt"
 6 | 	"io"
 7 | 	"log"
 8 | 	"os"
 9 | 	"time"
10 | )
11 | 
12 | type Activity struct {
13 | 	User        string    `json:"user"`
14 | 	StartTime   time.Time `json:"start_time"`
15 | 	EndTime     time.Time `json:"end_time"`
16 | 	Description string    `json:"description"`
17 | }
18 | 
19 | func (a *Activity) Validate() error {
20 | 	if len(a.User) == 0 {
21 | 		return fmt.Errorf("missing user in %#v", a)
22 | 	}
23 | 
24 | 	if a.EndTime.Before(a.StartTime) {
25 | 		return fmt.Errorf("end before start in %#v", a)
26 | 	}
27 | 
28 | 	if len(a.Description) == 0 {
29 | 		return fmt.Errorf("missing description in %#v", a)
30 | 	}
31 | 
32 | 	return nil
33 | }
34 | 
35 | func processActivity(r io.Reader) error {
36 | 	var act Activity
37 | 	const maxSize = 10 * 1024
38 | 
39 | 	r = io.LimitReader(r, maxSize)
40 | 	dec := json.NewDecoder(r)
41 | 	if err := dec.Decode(&act); err != nil {
42 | 		return err
43 | 	}
44 | 
45 | 	if err := act.Validate(); err != nil {
46 | 		return err
47 | 	}
48 | 
49 | 	log.Printf("activity: %#v", act)
50 | 	// TODO: Store in database
51 | 
52 | 	return nil
53 | }
54 | 
55 | func main() {
56 | 	if err := processActivity(os.Stdin); err != nil {
57 | 		log.Fatal(err)
58 | 	}
59 | }
60 | 


--------------------------------------------------------------------------------
/Ch03/03_02/fix/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"html/template"
 5 | 	"log"
 6 | 	"net/http"
 7 | 	"time"
 8 | )
 9 | 
10 | var (
11 | 	templateText = `<!DOCTYPE html>
12 | <html>
13 | 	<head>
14 | 		<title>{{.Name}}'s Messages</title>
15 | 	</head>
16 | 	<body>
17 | 	<h1>{{.Name}}'s Messages</h1>
18 | 	<p>
19 | 		You have {{len .Messages}} messages.
20 | 	</p>
21 | 	{{range .Messages}}
22 | 	<p>[{{.Time.Format "2006-01-02T15:04"}} {{.From}}] {{.Content}}</p>
23 | 	{{end}}
24 | 	</body>
25 | </html>
26 | `
27 | 	htmlTemplate = template.Must(template.New("messages").Parse(templateText))
28 | )
29 | 
30 | type Message struct {
31 | 	Time    time.Time
32 | 	From    string
33 | 	Content string
34 | }
35 | 
36 | type Params struct {
37 | 	Name     string
38 | 	Messages []Message
39 | }
40 | 
41 | func messagesHandler(w http.ResponseWriter, r *http.Request) {
42 | 	user := r.URL.Path[1:] // "/frodo" -> "frodo"
43 | 	ms, err := loadMessages(user)
44 | 	if err != nil {
45 | 		http.Error(w, "can't get messages", http.StatusBadRequest)
46 | 		return
47 | 	}
48 | 
49 | 	params := Params{user, ms}
50 | 	if err := htmlTemplate.Execute(w, params); err != nil {
51 | 		log.Printf("error: %s", err)
52 | 	}
53 | }
54 | 
55 | func main() {
56 | 	http.HandleFunc("/", messagesHandler)
57 | 
58 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
59 | 		log.Fatal(err)
60 | 	}
61 | }
62 | 
63 | func loadMessages(user string) ([]Message, error) {
64 | 	ms := []Message{
65 | 		{
66 | 			time.Date(2021, time.September, 23, 10, 33, 17, 0, time.UTC),
67 | 			"Pippin",
68 | 			"What about second breakfast?",
69 | 		},
70 | 		{
71 | 			time.Date(2021, time.September, 23, 14, 15, 32, 0, time.UTC),
72 | 			"Samy",
73 | 			"Where's the ring? <script>alert('Pwned!')</script>",
74 | 		},
75 | 	}
76 | 
77 | 	return ms, nil
78 | }
79 | 


--------------------------------------------------------------------------------
/Ch03/03_02/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"bytes"
 5 | 	"fmt"
 6 | 	"log"
 7 | 	"net/http"
 8 | 	"time"
 9 | )
10 | 
11 | var htmlTemplate = `<!DOCTYPE html>
12 | <html>
13 | 	<head>
14 | 		<title>%s's Messages</title>
15 | 	</head>
16 | 	<body>
17 | 	<h1>%s's Messages</h1>
18 | 	<p>
19 | 		You have %d messages.
20 | 	</p>
21 | 	%s
22 | 	</body>
23 | </html>
24 | `
25 | 
26 | type Message struct {
27 | 	Time    time.Time
28 | 	From    string
29 | 	Content string
30 | }
31 | 
32 | func formateMessages(ms []Message) string {
33 | 	var buf bytes.Buffer
34 | 	for _, m := range ms {
35 | 		ts := m.Time.Format("2006-01-02T15:04")
36 | 		fmt.Fprintf(&buf, "<p>[%s %s] %s</p><hr />\n", ts, m.From, m.Content)
37 | 	}
38 | 	return buf.String()
39 | }
40 | 
41 | func messagesHandler(w http.ResponseWriter, r *http.Request) {
42 | 	user := r.URL.Path[1:] // "/frodo" -> "frodo"
43 | 	ms, err := loadMessages(user)
44 | 	if err != nil {
45 | 		http.Error(w, "can't get messages", http.StatusBadRequest)
46 | 		return
47 | 	}
48 | 
49 | 	body := formateMessages(ms)
50 | 	fmt.Fprintf(w, htmlTemplate, user, user, len(ms), body)
51 | }
52 | 
53 | func main() {
54 | 	http.HandleFunc("/", messagesHandler)
55 | 
56 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
57 | 		log.Fatal(err)
58 | 	}
59 | }
60 | 
61 | func loadMessages(user string) ([]Message, error) {
62 | 	ms := []Message{
63 | 		{
64 | 			time.Date(2021, time.September, 23, 10, 33, 17, 0, time.UTC),
65 | 			"Pippin",
66 | 			"What about second breakfast?",
67 | 		},
68 | 		{
69 | 			time.Date(2021, time.September, 23, 14, 15, 32, 0, time.UTC),
70 | 			"Samy",
71 | 			"Where's the ring? <script>alert('Pwned!')</script>",
72 | 		},
73 | 	}
74 | 
75 | 	return ms, nil
76 | }
77 | 


--------------------------------------------------------------------------------
/Ch03/03_03/fix/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"encoding/json"
 5 | 	"log"
 6 | 	"net/http"
 7 | )
 8 | 
 9 | func friendsHandler(w http.ResponseWriter, r *http.Request) {
10 | 	login := r.URL.Query().Get("user")
11 | 	if login == "" {
12 | 		http.Error(w, "bad path", http.StatusBadRequest)
13 | 		return
14 | 	}
15 | 
16 | 	user := findUser(login)
17 | 	if user == nil {
18 | 		http.Error(w, "no such user", http.StatusBadRequest)
19 | 		return
20 | 	}
21 | 
22 | 	friends, err := userFriends(user)
23 | 	if err != nil {
24 | 		log.Printf("error: %s", err)
25 | 		http.Error(w, "can't get friends", http.StatusBadRequest)
26 | 		return
27 | 	}
28 | 
29 | 	w.Header().Set("Content-Type", "application/json")
30 | 	json.NewEncoder(w).Encode(friends)
31 | }
32 | 
33 | func main() {
34 | 	http.HandleFunc("/friends", friendsHandler)
35 | 
36 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
37 | 		log.Fatal(err)
38 | 	}
39 | }
40 | 


--------------------------------------------------------------------------------
/Ch03/03_03/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"encoding/json"
 5 | 	"log"
 6 | 	"net/http"
 7 | )
 8 | 
 9 | func friendsHandler(w http.ResponseWriter, r *http.Request) {
10 | 	login := r.URL.Query().Get("user")
11 | 	if login == "" {
12 | 		http.Error(w, "bad path", http.StatusBadRequest)
13 | 		return
14 | 	}
15 | 
16 | 	user := findUser(login)
17 | 	if user == nil {
18 | 		http.Error(w, "no such user", http.StatusBadRequest)
19 | 		return
20 | 	}
21 | 
22 | 	friends, err := userFriends(user)
23 | 	if err != nil {
24 | 		http.Error(w, err.Error(), http.StatusBadRequest)
25 | 		return
26 | 	}
27 | 
28 | 	w.Header().Set("Content-Type", "application/json")
29 | 	json.NewEncoder(w).Encode(friends)
30 | }
31 | 
32 | func main() {
33 | 	http.HandleFunc("/friends", friendsHandler)
34 | 
35 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
36 | 		log.Fatal(err)
37 | 	}
38 | }
39 | 


--------------------------------------------------------------------------------
/Ch03/03_03/users.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | )
 6 | 
 7 | type User struct {
 8 | 	Login   string
 9 | 	Age     int
10 | 	Address string
11 | }
12 | 
13 | func findUser(login string) *User {
14 | 	// TODO:
15 | 	return &User{
16 | 		Login:   login,
17 | 		Age:     21,
18 | 		Address: "23519 West, Civic Center Way, Malibu, CA 90265",
19 | 	}
20 | }
21 | 
22 | func userFriends(u *User) ([]*User, error) {
23 | 	// TODO:
24 | 	return nil, &UserError{"friend not enabled", u}
25 | }
26 | 
27 | type UserError struct {
28 | 	Reason string
29 | 	User   *User
30 | }
31 | 
32 | func (e *UserError) Error() string {
33 | 	return fmt.Sprintf("%s (%#v)", e.Reason, e.User)
34 | }
35 | 


--------------------------------------------------------------------------------
/Ch03/03_04/audit.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import "time"
 4 | 
 5 | type Audit struct {
 6 | 	User   string
 7 | 	Time   time.Time
 8 | 	Action string
 9 | }
10 | 
11 | func loadAudits() []Audit {
12 | 	return []Audit{
13 | 		{
14 | 			"Elliot Alderson",
15 | 			time.Date(2015, time.June, 24, 23, 27, 23, 999, time.UTC),
16 | 			"access fsociety.dat",
17 | 		},
18 | 	}
19 | }
20 | 


--------------------------------------------------------------------------------
/Ch03/03_04/auth.go:
--------------------------------------------------------------------------------
1 | package main
2 | 
3 | func authUser(user, passwd string) bool {
4 | 	// TODO:
5 | 	return false
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch03/03_04/fix/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"encoding/json"
 5 | 	"log"
 6 | 	"net/http"
 7 | )
 8 | 
 9 | func auditsHandler(w http.ResponseWriter, r *http.Request) {
10 | 	user, passwd, ok := r.BasicAuth()
11 | 	if !ok || !authUser(user, passwd) {
12 | 		http.Error(w, "not authorized", http.StatusUnauthorized)
13 | 		return
14 | 	}
15 | 
16 | 	audits := loadAudits()
17 | 	w.Header().Set("Content-Type", "application/json")
18 | 	json.NewEncoder(w).Encode(audits)
19 | }
20 | 
21 | func main() {
22 | 	http.HandleFunc("/audits", auditsHandler)
23 | 
24 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
25 | 		log.Fatal(err)
26 | 	}
27 | }
28 | 


--------------------------------------------------------------------------------
/Ch03/03_04/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"encoding/json"
 5 | 	"log"
 6 | 	"net/http"
 7 | )
 8 | 
 9 | func auditsHandler(w http.ResponseWriter, r *http.Request) {
10 | 	user, passwd, ok := r.BasicAuth()
11 | 	if !ok || !authUser(user, passwd) {
12 | 		http.Error(w, "not authorized", http.StatusUnauthorized)
13 | 	}
14 | 
15 | 	audits := loadAudits()
16 | 	w.Header().Set("Content-Type", "application/json")
17 | 	json.NewEncoder(w).Encode(audits)
18 | }
19 | 
20 | func main() {
21 | 	http.HandleFunc("/audits", auditsHandler)
22 | 
23 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
24 | 		log.Fatal(err)
25 | 	}
26 | }
27 | 


--------------------------------------------------------------------------------
/Ch03/challenge/auth.go:
--------------------------------------------------------------------------------
1 | package main
2 | 
3 | func authUser(user, passwd string) bool {
4 | 	// TODO:
5 | 	return user == "joe" && passwd == "baz00ka"
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch03/challenge/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"log"
 6 | 	"net/http"
 7 | )
 8 | 
 9 | var (
10 | 	loginHTML = `<!DOCTYPE html>
11 | <html>
12 | 	<body>
13 | 		<form method="post">
14 | 			<h2>Please Login</h2>
15 | 			User: <input name="user"> <br/>
16 | 			Password: <input type="password" name="passwd"> <br/>
17 | 			<input type="submit"/>
18 | 		</form>
19 | 	<body>
20 | </html>
21 | `
22 | 
23 | 	statusHTML = `<!DOCTYPE html>
24 | <html>
25 | 	<body>
26 | 		<h2>Status</h2>
27 | 		%s
28 | 	</body>
29 | </html>
30 | `
31 | )
32 | 
33 | func statusHandler(w http.ResponseWriter, r *http.Request) {
34 | 	w.Header().Set("Content-Type", "text/html")
35 | 	if r.Method != http.MethodPost {
36 | 		fmt.Fprint(w, loginHTML)
37 | 		return
38 | 	}
39 | 
40 | 	user, passwd := r.FormValue("user"), r.FormValue("passwd")
41 | 	if !authUser(user, passwd) {
42 | 		http.Error(w, fmt.Sprintf("%s:%s - bad login", user, passwd), http.StatusUnauthorized)
43 | 	}
44 | 
45 | 	fmt.Fprintf(w, statusHTML, getStatus())
46 | }
47 | 
48 | func main() {
49 | 	http.HandleFunc("/status", statusHandler)
50 | 
51 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
52 | 		log.Fatal(err)
53 | 	}
54 | }
55 | 


--------------------------------------------------------------------------------
/Ch03/challenge/status.go:
--------------------------------------------------------------------------------
1 | package main
2 | 
3 | func getStatus() string {
4 | 	return "OK <script>alert('vuln!');</script>"
5 | }
6 | 


--------------------------------------------------------------------------------
/Ch03/solution/auth.go:
--------------------------------------------------------------------------------
1 | package main
2 | 
3 | func authUser(user, passwd string) bool {
4 | 	// TODO:
5 | 	return user == "joe" && passwd == "baz00ka"
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch03/solution/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"html/template"
 6 | 	"log"
 7 | 	"net/http"
 8 | )
 9 | 
10 | var (
11 | 	loginHTML = `<!DOCTYPE html>
12 | <html>
13 | 	<body>
14 | 		<form method="post">
15 | 			<h2>Please Login</h2>
16 | 			User: <input name="user"> <br/>
17 | 			Password: <input type="password" name="passwd"> <br/>
18 | 			<input type="submit"/>
19 | 		</form>
20 | 	<body>
21 | </html>
22 | `
23 | 	loginTemplate = template.Must(template.New("login").Parse(loginHTML))
24 | 
25 | 	statusHTML = `<!DOCTYPE html>
26 | <html>
27 | 	<body>
28 | 		<h2>Status</h2>
29 | 		{{.}}
30 | 	</body>
31 | </html>
32 | `
33 | 	statusTemplate = template.Must(template.New("status").Parse(statusHTML))
34 | )
35 | 
36 | func statusHandler(w http.ResponseWriter, r *http.Request) {
37 | 	w.Header().Set("Content-Type", "text/html")
38 | 	if r.Method != http.MethodPost {
39 | 		loginTemplate.Execute(w, nil)
40 | 		return
41 | 	}
42 | 
43 | 	user, passwd := r.FormValue("user"), r.FormValue("passwd")
44 | 	if !authUser(user, passwd) {
45 | 		http.Error(w, fmt.Sprintf("%s:%s - bad login", user, passwd), http.StatusUnauthorized)
46 | 		return
47 | 	}
48 | 
49 | 	statusTemplate.Execute(w, getStatus())
50 | }
51 | 
52 | func main() {
53 | 	http.HandleFunc("/status", statusHandler)
54 | 
55 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
56 | 		log.Fatal(err)
57 | 	}
58 | }
59 | 


--------------------------------------------------------------------------------
/Ch03/solution/status.go:
--------------------------------------------------------------------------------
1 | package main
2 | 
3 | func getStatus() string {
4 | 	return "OK <script>alert('vuln!');</script>"
5 | }
6 | 


--------------------------------------------------------------------------------
/Ch04/04_02/auth.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | type User struct {
 4 | 	Login string
 5 | }
 6 | 
 7 | func userFromToken(token string) *User {
 8 | 	// FIXME: JWT, Oauth2 ...
 9 | 	if token == "baz00ka" {
10 | 		return &User{"joe"}
11 | 	}
12 | 	return nil
13 | }
14 | 


--------------------------------------------------------------------------------
/Ch04/04_02/health.go:
--------------------------------------------------------------------------------
1 | package main
2 | 
3 | func checkHealth() error {
4 | 	return nil // FIXME:
5 | }
6 | 


--------------------------------------------------------------------------------
/Ch04/04_02/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"fmt"
 6 | 	"log"
 7 | 	"net/http"
 8 | 	"strings"
 9 | )
10 | 
11 | func healthHandler(w http.ResponseWriter, r *http.Request) {
12 | 	if err := checkHealth(); err != nil {
13 | 		http.Error(w, "health check failed", http.StatusInternalServerError)
14 | 		return
15 | 	}
16 | 
17 | 	fmt.Fprintf(w, "OK\n")
18 | }
19 | 
20 | func messagesHandler(w http.ResponseWriter, r *http.Request) {
21 | 	user, ok := r.Context().Value("user").(*User)
22 | 	if !ok {
23 | 		http.Error(w, "no user", http.StatusInternalServerError)
24 | 		return
25 | 	}
26 | 	log.Printf("user: %s", user)
27 | 
28 | 	// FIXME:
29 | 	fmt.Fprint(w, "[]\n")
30 | }
31 | 
32 | func authToken(r *http.Request) string {
33 | 	hdr := r.Header.Get("Authorization")
34 | 	return strings.TrimPrefix(hdr, "Bearer ")
35 | }
36 | 
37 | func requireAuth(h http.Handler) http.Handler {
38 | 	fn := func(w http.ResponseWriter, r *http.Request) {
39 | 		token := authToken(r)
40 | 		user := userFromToken(token)
41 | 		if user == nil {
42 | 			http.Error(w, "bad authentication", http.StatusUnauthorized)
43 | 			return
44 | 		}
45 | 
46 | 		ctx := context.WithValue(r.Context(), "user", user)
47 | 		r = r.WithContext(ctx)
48 | 		h.ServeHTTP(w, r)
49 | 	}
50 | 
51 | 	return http.HandlerFunc(fn)
52 | }
53 | 
54 | func main() {
55 | 	http.HandleFunc("/health", healthHandler)
56 | 	h := requireAuth(http.HandlerFunc(messagesHandler))
57 | 	http.Handle("/messages", h)
58 | 
59 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
60 | 		log.Fatal(err)
61 | 	}
62 | }
63 | 


--------------------------------------------------------------------------------
/Ch04/04_03/auth.go:
--------------------------------------------------------------------------------
1 | package main
2 | 
3 | import "net/http"
4 | 
5 | func requestUser(r *http.Request) string {
6 | 	// FIXME:
7 | 	return "mcduck"
8 | }
9 | 


--------------------------------------------------------------------------------
/Ch04/04_03/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"log"
 6 | 	"net/http"
 7 | )
 8 | 
 9 | func isAllowed(user, action, resource string) bool {
10 | 	if action == http.MethodGet {
11 | 		return true // anyone can read
12 | 	}
13 | 
14 | 	return user == resource
15 | }
16 | 
17 | func messagesHandler(w http.ResponseWriter, r *http.Request) {
18 | 	user := requestUser(r)
19 | 	resource := r.URL.Query().Get("user")
20 | 	if !isAllowed(user, r.Method, resource) {
21 | 		http.Error(w, "not allowed", http.StatusUnauthorized)
22 | 		return
23 | 	}
24 | 
25 | 	// TODO:
26 | 	fmt.Fprintf(w, "OK\n")
27 | }
28 | 
29 | func main() {
30 | 	http.HandleFunc("/messages", messagesHandler)
31 | 
32 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
33 | 		log.Fatal(err)
34 | 	}
35 | }
36 | 


--------------------------------------------------------------------------------
/Ch04/challenge/auth.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"net/http"
 5 | 	"strings"
 6 | )
 7 | 
 8 | type Role uint
 9 | 
10 | // Roles (as bitmask)
11 | const (
12 | 	Guest Role = 1 << iota
13 | 	Developer
14 | 	Admin
15 | )
16 | 
17 | type User struct {
18 | 	Login string
19 | 	Roles Role // bitmask of roles
20 | }
21 | 
22 | func (u *User) HasRole(r Role) bool {
23 | 	return u.Roles&r != 0
24 | }
25 | 
26 | func RequestUser(r *http.Request) (User, bool) {
27 | 	token := strings.TrimPrefix(r.Header.Get("Authorization"), "Bearer ")
28 | 	u, ok := users[token]
29 | 	return u, ok
30 | }
31 | 
32 | // token -> user
33 | // FIXME: Use a real and secure database
34 | var users = map[string]User{
35 | 	"m4ur1c3": {"moss", Admin | Developer | Guest},
36 | 	"b4rb3r":  {"jen", Guest},
37 | }
38 | 


--------------------------------------------------------------------------------
/Ch04/challenge/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"log"
 6 | 	"net/http"
 7 | )
 8 | 
 9 | func adminHandler(w http.ResponseWriter, r *http.Request) {
10 | 	fmt.Fprintf(w, "You're in!")
11 | }
12 | 
13 | // requireAdmin is a middleware allowing only users with Admin role to access the handler
14 | func requireAdmin(h http.Handler) http.Handler {
15 | 	// FIXME: Your code goes here
16 | 	return h
17 | }
18 | 
19 | func main() {
20 | 	h := requireAdmin(http.HandlerFunc(adminHandler))
21 | 	http.Handle("/admin", h)
22 | 
23 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
24 | 		log.Fatal(err)
25 | 	}
26 | }
27 | 


--------------------------------------------------------------------------------
/Ch04/solution/auth.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"net/http"
 5 | 	"strings"
 6 | )
 7 | 
 8 | type Role uint
 9 | 
10 | // Roles (as bitmask)
11 | const (
12 | 	Guest Role = 1 << iota
13 | 	Developer
14 | 	Admin
15 | )
16 | 
17 | type User struct {
18 | 	Login string
19 | 	Roles Role // bitmask of roles
20 | }
21 | 
22 | func (u *User) HasRole(r Role) bool {
23 | 	return u.Roles&r != 0
24 | }
25 | 
26 | func RequestUser(r *http.Request) (User, bool) {
27 | 	token := strings.TrimPrefix(r.Header.Get("Authorization"), "Bearer ")
28 | 	u, ok := users[token]
29 | 	return u, ok
30 | }
31 | 
32 | // token -> user
33 | // FIXME: Use a real and secure database
34 | var users = map[string]User{
35 | 	"m4ur1c3": {"moss", Admin | Developer | Guest},
36 | 	"b4rb3r":  {"jen", Guest},
37 | }
38 | 


--------------------------------------------------------------------------------
/Ch04/solution/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"log"
 6 | 	"net/http"
 7 | )
 8 | 
 9 | func adminHandler(w http.ResponseWriter, r *http.Request) {
10 | 	fmt.Fprintf(w, "You're in!\n")
11 | }
12 | 
13 | // requireAdmin is a middleware allowing only users with Admin role to access the handler
14 | func requireAdmin(h http.Handler) http.Handler {
15 | 	fn := func(w http.ResponseWriter, r *http.Request) {
16 | 		u, ok := RequestUser(r)
17 | 		if !ok {
18 | 			http.Error(w, "unauthorized", http.StatusUnauthorized)
19 | 			return
20 | 		}
21 | 
22 | 		if !u.HasRole(Admin) {
23 | 			http.Error(w, "unauthorized", http.StatusUnauthorized)
24 | 			return
25 | 		}
26 | 
27 | 		h.ServeHTTP(w, r)
28 | 	}
29 | 
30 | 	return http.HandlerFunc(fn)
31 | }
32 | 
33 | func main() {
34 | 	h := requireAdmin(http.HandlerFunc(adminHandler))
35 | 	http.Handle("/admin", h)
36 | 
37 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
38 | 		log.Fatal(err)
39 | 	}
40 | }
41 | 


--------------------------------------------------------------------------------
/Ch05/05_02/gen-cert.sh:
--------------------------------------------------------------------------------
1 | #!/bin/bash
2 | 
3 | openssl req -x509 -out cert.pem -keyout key.pem \
4 |   -newkey rsa:2048 -nodes -sha256 \
5 |   -subj '/CN=localhost' -extensions EXT -config <( \
6 |    printf "[dn]\nCN=localhost\n[req]\ndistinguished_name = dn\n[EXT]\nsubjectAltName=DNS:localhost\nkeyUsage=digitalSignature\nextendedKeyUsage=serverAuth")


--------------------------------------------------------------------------------
/Ch05/05_02/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"fmt"
 5 | 	"log"
 6 | 	"net/http"
 7 | )
 8 | 
 9 | func healthHandler(w http.ResponseWriter, r *http.Request) {
10 | 	fmt.Fprintf(w, "OK\n")
11 | }
12 | 
13 | func main() {
14 | 	http.HandleFunc("/health", healthHandler)
15 | 
16 | 	if err := http.ListenAndServeTLS(":8443", "cert.pem", "key.pem", nil); err != nil {
17 | 		log.Fatal(err)
18 | 	}
19 | }
20 | 


--------------------------------------------------------------------------------
/Ch05/05_03/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"fmt"
 6 | 	"log"
 7 | 	"net/http"
 8 | 	"os"
 9 | 	"time"
10 | )
11 | 
12 | var (
13 | 	apiKey string
14 | 	apiURL = "https://httpbin.org/basic-auth/key/l3tm3in"
15 | )
16 | 
17 | func handler(w http.ResponseWriter, r *http.Request) {
18 | 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
19 | 	defer cancel()
20 | 
21 | 	req, err := http.NewRequestWithContext(ctx, "GET", apiURL, nil)
22 | 	if err != nil {
23 | 		http.Error(w, "can't create request", http.StatusInternalServerError)
24 | 		return
25 | 	}
26 | 	req.SetBasicAuth("key", apiKey)
27 | 
28 | 	resp, err := http.DefaultClient.Do(req)
29 | 	if err != nil || resp.StatusCode != http.StatusOK {
30 | 		http.Error(w, "can't call API", http.StatusInternalServerError)
31 | 		return
32 | 	}
33 | 
34 | 	fmt.Fprintf(w, "OK\n")
35 | }
36 | 
37 | func loadConfig() error {
38 | 	apiKey = os.Getenv("API_KEY")
39 | 	if apiKey == "" {
40 | 		return fmt.Errorf("missing API_KEY")
41 | 	}
42 | 	return nil
43 | }
44 | 
45 | func main() {
46 | 	if err := loadConfig(); err != nil {
47 | 		log.Fatal(err)
48 | 	}
49 | 
50 | 	http.HandleFunc("/", handler)
51 | 
52 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
53 | 		log.Fatal(err)
54 | 	}
55 | }
56 | 


--------------------------------------------------------------------------------
/Ch05/05_05/auth.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import "net/http"
 4 | 
 5 | type User struct {
 6 | 	Login string
 7 | 	Name  string
 8 | 	// TODO: More fields
 9 | }
10 | 
11 | func loginUser(login, passwd string) (User, bool) {
12 | 	// FIXME: Use real auth database
13 | 	if login == "daffy" && passwd == "r4bb1ts3as0n" {
14 | 		return User{"daffy", "Daffy Duck"}, true
15 | 	}
16 | 
17 | 	return User{}, false
18 | }
19 | 
20 | func setUserCookie(w http.ResponseWriter, u User) {
21 | 	// TODO: JWT
22 | }
23 | 


--------------------------------------------------------------------------------
/Ch05/05_05/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"expvar"
 5 | 	"fmt"
 6 | 	"log"
 7 | 	"net/http"
 8 | )
 9 | 
10 | var (
11 | 	badLogins = expvar.NewInt("login.errors")
12 | )
13 | 
14 | func loginHandler(w http.ResponseWriter, r *http.Request) {
15 | 	if r.Method != http.MethodPost {
16 | 		http.Error(w, "bad method", http.StatusMethodNotAllowed)
17 | 		return
18 | 	}
19 | 
20 | 	login, passwd := r.FormValue("user"), r.FormValue("passwd")
21 | 	if len(login) == 0 || len(passwd) == 0 {
22 | 		http.Error(w, "missing auth", http.StatusUnauthorized)
23 | 		return
24 | 
25 | 	}
26 | 
27 | 	u, ok := loginUser(login, passwd)
28 | 	if !ok {
29 | 		badLogins.Add(1)
30 | 		log.Printf("bad %q login from %s", login, r.RemoteAddr)
31 | 		http.Error(w, "bad auth", http.StatusUnauthorized)
32 | 		return
33 | 	}
34 | 
35 | 	log.Printf("%q login from %s", login, r.RemoteAddr)
36 | 	setUserCookie(w, u)
37 | 
38 | 	// TODO: Redirect to main page
39 | 	fmt.Fprintf(w, "Welcome %s!\n", u.Name)
40 | }
41 | 
42 | func main() {
43 | 	http.HandleFunc("/login", loginHandler)
44 | 
45 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
46 | 		log.Fatal(err)
47 | 	}
48 | }
49 | 


--------------------------------------------------------------------------------
/Ch05/challenge/auth.go:
--------------------------------------------------------------------------------
1 | package main
2 | 
3 | func isValidAuth(login, passwd string) bool {
4 | 	// TODO: Use vault
5 | 	return login == "katie" && passwd == "m17ch3ll"
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch05/challenge/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"expvar"
 5 | 	"fmt"
 6 | 	"log"
 7 | 	"net/http"
 8 | )
 9 | 
10 | var (
11 | 	numCalls = expvar.NewInt("messages.calls")
12 | )
13 | 
14 | func messagesHandler(w http.ResponseWriter, r *http.Request) {
15 | 	numCalls.Add(1)
16 | 
17 | 	// TODO:
18 | 	fmt.Fprintf(w, "TBD\n")
19 | }
20 | 
21 | func main() {
22 | 	http.HandleFunc("/messages", messagesHandler)
23 | 
24 | 	if err := http.ListenAndServe(":8080", nil); err != nil {
25 | 		log.Fatal(err)
26 | 	}
27 | }
28 | 


--------------------------------------------------------------------------------
/Ch05/solution/auth.go:
--------------------------------------------------------------------------------
1 | package main
2 | 
3 | func isValidAuth(login, passwd string) bool {
4 | 	// TODO: Use vault
5 | 	return login == "katie" && passwd == "m17ch3ll"
6 | }
7 | 


--------------------------------------------------------------------------------
/Ch05/solution/httpd.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"expvar"
 5 | 	"fmt"
 6 | 	"log"
 7 | 	"net/http"
 8 | 	"strings"
 9 | )
10 | 
11 | var (
12 | 	numCalls = expvar.NewInt("messages.calls")
13 | )
14 | 
15 | func messagesHandler(w http.ResponseWriter, r *http.Request) {
16 | 	numCalls.Add(1)
17 | 
18 | 	// TODO:
19 | 	fmt.Fprintf(w, "TBD\n")
20 | }
21 | 
22 | func checkAuth(w http.ResponseWriter, r *http.Request) {
23 | 	if strings.HasPrefix(r.URL.Path, "/debug") {
24 | 		login, passwd, ok := r.BasicAuth()
25 | 		if !ok || !isValidAuth(login, passwd) {
26 | 			http.Error(w, "bad auth", http.StatusUnauthorized)
27 | 			return
28 | 		}
29 | 
30 | 	}
31 | 
32 | 	http.DefaultServeMux.ServeHTTP(w, r)
33 | }
34 | 
35 | func main() {
36 | 	http.HandleFunc("/messages", messagesHandler)
37 | 
38 | 	mux := http.HandlerFunc(checkAuth)
39 | 	if err := http.ListenAndServe(":8080", mux); err != nil {
40 | 		log.Fatal(err)
41 | 	}
42 | }
43 | 


--------------------------------------------------------------------------------
/Ch06/06_03/url_size.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"flag"
 5 | 	"fmt"
 6 | 	"io/ioutil"
 7 | 	"log"
 8 | 	"net/http"
 9 | )
10 | 
11 | func main() {
12 | 	var url string
13 | 
14 | 	flag.StringVar(&url, "url", "", "URL to get")
15 | 	flag.Parse()
16 | 
17 | 	resp, err := http.Get(url)
18 | 	if err != nil {
19 | 		log.Fatal(err)
20 | 	}
21 | 
22 | 	if resp.StatusCode != http.StatusOK {
23 | 		log.Fatalf("%d %s", resp.StatusCode, resp.Status)
24 | 	}
25 | 
26 | 	defer resp.Body.Close()
27 | 	data, err := ioutil.ReadAll(resp.Body)
28 | 	if err != nil {
29 | 		log.Fatal(err)
30 | 	}
31 | 	fmt.Printf("%d bytes\n", len(data))
32 | }
33 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
  1 | LinkedIn Learning Exercise Files License Agreement
  2 | ==================================================
  3 | 
  4 | This License Agreement (the "Agreement") is a binding legal agreement
  5 | between you (as an individual or entity, as applicable) and LinkedIn
  6 | Corporation (“LinkedIn”). By downloading or using the LinkedIn Learning
  7 | exercise files in this repository (“Licensed Materials”), you agree to
  8 | be bound by the terms of this Agreement. If you do not agree to these
  9 | terms, do not download or use the Licensed Materials. 
 10 | 
 11 | 1. License.
 12 | - a. Subject to the terms of this Agreement, LinkedIn hereby grants LinkedIn
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103 | agreements relating to the Licensed Materials.  
104 | 
105 | Last Updated: March 2019
106 | 


--------------------------------------------------------------------------------
/NOTICE:
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 1 | Copyright 2021 LinkedIn Corporation
 2 | All Rights Reserved.
 3 | 
 4 | Licensed under the LinkedIn Learning Exercise File License (the "License").
 5 | See LICENSE in the project root for license information.
 6 | 
 7 | 
 8 | Please note, this project may automatically load third party code from external 
 9 | repositories (for example, NPM modules, Composer packages, or other dependencies). 
10 | If so, such third party code may be subject to other license terms than as set 
11 | forth above. In addition, such third party code may also depend on and load 
12 | multiple tiers of dependencies. Please review the applicable licenses of the 
13 | additional dependencies.
14 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # Secure Coding in Go
 2 | This is the repository for the LinkedIn Learning course Secure Coding in Go. The full course is available from [LinkedIn Learning][lil-course-url].
 3 | 
 4 | ![Secure Coding in Go][lil-thumbnail-url] 
 5 | 
 6 | The Go programming language is growing in popularity. Unfortunately, security issues for Go applications are also on the rise. In this course, learn how to secure your Go application to prevent hackers from stealing data or crashing it. Instructor Miki Tebeka explains why developers should care about security, as well as how to prevent SQL injection attacks, identify places where sensitive data is stored and avoid exposing it to the outside world, write code that protects the integrity of the system, and more. Along the way, he provides challenges that allow you to put your new skills to the test.
 7 | 
 8 | ## Instructions
 9 | This repository has branches for each of the videos in the course. You can use the branch pop up menu in github to switch to a specific branch and take a look at the course at that stage, or you can add `/tree/BRANCH_NAME` to the URL to go to the branch you want to access.
10 | 
11 | ## Branches
12 | The branches are structured to correspond to the videos in the course. The naming convention is `CHAPTER#_MOVIE#`. As an example, the branch named `02_03` corresponds to the second chapter and the third video in that chapter. 
13 | Some branches will have a beginning and an end state. These are marked with the letters `b` for "beginning" and `e` for "end". The `b` branch contains the code as it is at the beginning of the movie. The `e` branch contains the code as it is at the end of the movie. The `main` branch holds the final state of the code when in the course.
14 | 
15 | When switching from one exercise files branch to the next after making changes to the files, you may get a message like this:
16 | 
17 |     error: Your local changes to the following files would be overwritten by checkout:        [files]
18 |     Please commit your changes or stash them before you switch branches.
19 |     Aborting
20 | 
21 | To resolve this issue:
22 | 	
23 |     Add changes to git using this command: git add .
24 | 	Commit changes using this command: git commit -m "some message"
25 | 
26 | ## Installing
27 | 1. To use these exercise files, you must have the following installed:
28 | 	- [Go SDK](https://golang.org/dl/)
29 | 	- [Git](https://git-scm.com/)
30 | 	- [Docker](https://www.docker.com/)
31 | 2. Clone this repository into your local machine using the terminal (Mac), CMD (Windows), or a GUI tool like SourceTree.
32 | 3. Change directory to the root and run `go mod download`
33 | 
34 | 
35 | ### Instructor
36 | 
37 | Miki Tebeka 
38 |                             
39 | 
40 | 
41 |                             
42 | 
43 | Check out my other courses on [LinkedIn Learning](https://www.linkedin.com/learning/instructors/miki-tebeka).
44 | 
45 | [lil-course-url]: https://www.linkedin.com/learning/secure-coding-in-go
46 | [lil-thumbnail-url]: https://cdn.lynda.com/course/3009233/3009233-1637778695534-16x9.jpg
47 | 
48 | 


--------------------------------------------------------------------------------