From 06b553ab3f6355e643049dad0ccb570a0bc0d613 Mon Sep 17 00:00:00 2001
From: kaa <kaa@disroot.org>
Date: Sat, 25 Nov 2023 12:40:23 -0800
Subject: WIP Directory traversal using go.

---
 cantree/config.go         |   5 +++
 cantree/go.mod            |   3 ++
 cantree/test/example.json |   1 +
 cantree/test/t.go         |  17 ++++++++
 cantree/tree.go           | 102 ++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 128 insertions(+)
 create mode 100644 cantree/config.go
 create mode 100644 cantree/go.mod
 create mode 100644 cantree/test/example.json
 create mode 100644 cantree/test/t.go
 create mode 100644 cantree/tree.go

(limited to 'cantree')

diff --git a/cantree/config.go b/cantree/config.go
new file mode 100644
index 0000000..147a7ee
--- /dev/null
+++ b/cantree/config.go
@@ -0,0 +1,5 @@
+package main
+
+const (
+	base = `https://sdccd.instructure.com/api/v1/`
+)
diff --git a/cantree/go.mod b/cantree/go.mod
new file mode 100644
index 0000000..14df6fb
--- /dev/null
+++ b/cantree/go.mod
@@ -0,0 +1,3 @@
+module mesacsclub.com/go/cantree
+
+go 1.20
diff --git a/cantree/test/example.json b/cantree/test/example.json
new file mode 100644
index 0000000..9fb056c
--- /dev/null
+++ b/cantree/test/example.json
@@ -0,0 +1 @@
+{"id":17428885,"name":"my files","full_name":"my files","context_id":9064950,"context_type":"User","parent_folder_id":null,"created_at":"2023-08-18T04:06:27Z","updated_at":"2023-08-18T04:06:27Z","lock_at":null,"unlock_at":null,"position":null,"locked":false,"folders_url":"https://sdccd.instructure.com/api/v1/folders/17428885/folders","files_url":"https://sdccd.instructure.com/api/v1/folders/17428885/files","files_count":15,"folders_count":10,"hidden":null,"locked_for_user":false,"hidden_for_user":false,"for_submissions":false,"can_upload":true}
diff --git a/cantree/test/t.go b/cantree/test/t.go
new file mode 100644
index 0000000..203d6b9
--- /dev/null
+++ b/cantree/test/t.go
@@ -0,0 +1,17 @@
+package main
+
+import (
+	"fmt"
+	"encoding/json"
+	"io"
+	"os"
+)
+
+func main() {
+	in, _ := os.Open("example.json")
+	contents, _ := io.ReadAll(in)
+
+	var m map[string]interface{}
+	json.Unmarshal(contents, &m)
+	fmt.Printf("%v\n", m)
+}
\ No newline at end of file
diff --git a/cantree/tree.go b/cantree/tree.go
new file mode 100644
index 0000000..8a7464f
--- /dev/null
+++ b/cantree/tree.go
@@ -0,0 +1,102 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"encoding/json"
+	"errors"
+	"io/fs"
+	"strconv"
+)
+
+var downloadKey string
+
+func request(dirID string) []byte {
+	req, err := http.NewRequest("GET", base+dirID, nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	req.Header.Add("Authorization", "Bearer "+downloadKey)
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	rt, err := io.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+	resp.Body.Close()
+
+	return rt
+}
+
+func traverse(j map[string]interface{}) {
+	name := j["name"].(string)
+	/* Internally stored as float64.
+	Must be converted to int before string. */
+	id := strconv.Itoa(int(j["id"].(float64)))
+	fmt.Println(name, id)
+
+	var files []map[string]interface{}
+	var err error
+	str := "folders/" + string(id) + "/files"
+	fmt.Println(str)
+	err = json.Unmarshal(request("folders/"+string(id)+"/files"),
+		&files)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	for _, i := range files {
+		for i, j := range i {
+			fmt.Printf("%s %v\n", i, j)
+		}
+	}
+
+	return
+	err = os.Mkdir(name, 0777)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	_ = os.Chdir(name)
+	defer os.Chdir("..")
+
+
+}
+
+// Traverse and download the contents of the Canvas API.
+func main() {
+	var set bool
+	downloadKey, set = os.LookupEnv("CANKEY")
+	if !set {
+		log.Fatal("Set the environment variable CANKEY to persistently contain your Canvas account API key.")
+	}
+
+	_, err := os.Stat("root")
+	if errors.Is(err, fs.ErrNotExist) {
+		os.Mkdir("root", 0777)
+	}
+	err = os.Chdir("root")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	body := request("users/self/folders")
+
+	var m []map[string]interface{}
+	err = json.Unmarshal(body, &m)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	for _, i := range m {
+		traverse(i)
+	}
+}
-- 
cgit v1.2.3