From 0b41f38661d4ce3f90ad4df7cc5a17efae8352aa Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Fri, 16 Apr 2021 23:05:12 +0200
Subject: Added basic backend code, two api endpoints & sanitization

---
 api/git.js          | 62 +++++++++++++++++++++++++++++++++++++++++++++
 api/sanitization.js | 10 ++++++++
 api/v1.js           | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 144 insertions(+)
 create mode 100644 api/git.js
 create mode 100644 api/sanitization.js
 create mode 100644 api/v1.js

(limited to 'api')

diff --git a/api/git.js b/api/git.js
new file mode 100644
index 0000000..b8d89c3
--- /dev/null
+++ b/api/git.js
@@ -0,0 +1,62 @@
+const { exec } = require("child_process");
+
+const log_format='{"hash": "%H", "author": "%an", "author_email": "%ae", "date": "%at", "subject": "%s"}'
+
+function getLog(path)
+{
+	return new Promise((resolve) =>
+	{
+		exec(`git -C ${path} log --format=format:'${log_format}'`, (error, stdout, stderr) =>
+		{
+			if(error) {
+				const no_such_fileor_dir = new RegExp(`cannot change to '${path.replace('/', "\/")}': No such file or directory\\n$`);
+
+				if(no_such_fileor_dir.test(error.message)) {
+					resolve({ "error": 404 });
+					return;
+				}
+				resolve({ "error": error.message });
+				return;
+			}
+			if(stderr) {
+				resolve({ "error": "Failed to communicate with git!" });
+				return;
+			}
+
+			const log = stdout.split('\n');
+			log.forEach((entry, index) => log[index] = JSON.parse(entry));
+
+			resolve({ "data": log });
+		});
+	});
+}
+
+function getTimeSinceLatestCommit(path)
+{
+	return new Promise((resolve) =>
+	{
+		exec(`git -C ${path} log -n 1 --date=unix'`, (error, stdout, stderr) =>
+		{
+			if(error) {
+				const no_such_fileor_dir = new RegExp(`cannot change to '${path.replace('/', "\/")}': No such file or directory\\n$`);
+
+				if(no_such_fileor_dir.test(error.message)) {
+					resolve({ "error": 404 });
+					return;
+				}
+				resolve({ "error": error.message });
+				return;
+			}
+			if(stderr) {
+				resolve({ "error": "Failed to communicate with git!" });
+				return;
+			}
+
+			const 
+
+			resolve({ "data": log });
+		});
+	});
+}
+
+module.exports.getLog = getLog;
\ No newline at end of file
diff --git a/api/sanitization.js b/api/sanitization.js
new file mode 100644
index 0000000..5c9d009
--- /dev/null
+++ b/api/sanitization.js
@@ -0,0 +1,10 @@
+function sanitizeRepoName(dirty)
+{
+	const valid_repo_name = /^[a-zA-Z0-9\.\-_]+$/;
+	if(valid_repo_name.test(dirty)) {
+		return true;
+	}
+	return false;
+}
+
+module.exports.sanitizeRepoName = sanitizeRepoName;
\ No newline at end of file
diff --git a/api/v1.js b/api/v1.js
new file mode 100644
index 0000000..6b96e94
--- /dev/null
+++ b/api/v1.js
@@ -0,0 +1,72 @@
+const express = require("express");
+const git = require("./git");
+const sanitization = require("./sanitization");
+const fs = require('fs');
+
+const router = express.Router();
+const base_dir="/home/hampus/Projects/"
+
+router.get("/repos", async function(req, res)
+{
+	fs.readdir(base_dir, (err, files) =>
+	{
+		if(err) {
+			throw err;
+		}
+
+		var repos = {};
+
+		files = files.filter(repo => repo.endsWith(".git"));
+
+		let getRepoInfo = new Promise((resolve) =>
+		{
+			files.forEach((repo, index, arr) =>
+			{
+				fs.readFile(`${base_dir}/${repo}/description`, (err, content) =>
+				{
+					let desc = "";
+					
+					if(!err) {
+						desc = content.toString();
+					}
+
+					repos[repo.slice(0, -4)] = { "description": desc };
+
+					if(index === arr.length -1) resolve();
+				})
+			});	
+		});
+
+		getRepoInfo.then(() =>
+		{
+			console.log(`Sist: ${JSON.stringify(repos)}`);
+			res.json({ "data": repos });
+		})
+	});
+});
+
+router.get("/repos/:repo/log", async function(req, res)
+{
+	if(sanitization.sanitizeRepoName(req.params.repo)) {
+		const repo = `${req.params.repo}.git`;
+		const log = await git.getLog(`${base_dir}/${repo}`);
+
+		if(log["error"]) {
+			if(typeof log["error"] === "string") {
+				res.status(500).json({ "error": log["error"] });
+				return;
+			}
+			switch(log["error"]) {
+				case 404:
+					res.status(404).json({ "error": "Git repository doesn't exist!" });
+					return;
+			}
+			return;
+		}
+		res.json(log);
+		return;
+	}
+	res.status(400).json({ "error": "Unacceptable git repository name!" });
+});
+
+module.exports = router;
\ No newline at end of file
-- 
cgit v1.2.3-18-g5258