Dev: serve versions from git

2 years ago · a7f5bae92a
4 changed files with 337 additions and 7 deletions
--- a/git-serve-server.js
+++ b/git-serve-server.js
@ -0,0 +1,66 @@
				@@ -0,0 +1,66 @@
+// @ts-check
+
+const https = require('https');
+const http = require('http');
+const fs = require('fs');
+
+const gitstatic = require("./git-serve");
+const express = require("express");
+
+const repository = '.git';
+
+const app = express();
+app.get(/^\/.+/, gitstatic.route().repository(repository));
+app.get(/\//, (req, res) => {
+  gitstatic.listAllCommits(repository, (err, commits) => {
+    console.log(err, commits);
+
+    res.send(
+      commits.map((commit) => {
+        return `<a href="/${commit.sha}/public/index.html" target="_blank"><span style="font-family: monospace;">${commit.sha.slice(0, 7)} - ${commit.date.toISOString()}</span></a> - <a href="https://github.com/morethanwords/tweb/commit/${commit.sha}" target="_blank">${commit.subject}</a><br>`;
+      }).join('')
+    );
+  });
+});
+
+const { networkInterfaces } = require('os');
+const nets = networkInterfaces();
+const results = {};
+
+for(const name of Object.keys(nets)) {
+  for(const net of nets[name]) {
+    // Skip over non-IPv4 and internal (i.e. 127.0.0.1) addresses
+    if(net.family === 'IPv4' && !net.internal) {
+      if(!results[name]) {
+        results[name] = [];
+      }
+      results[name].push(net.address);
+    }
+  }
+}
+
+const useHttp = false;
+const server = useHttp ? http : https;
+let options = {};
+if(!useHttp) {
+  options.key = fs.readFileSync(__dirname + '/certs/server-key.pem');
+  options.cert = fs.readFileSync(__dirname + '/certs/server-cert.pem');
+}
+
+const port = 3000;
+const protocol = useHttp ? 'http' : 'https';
+console.log('Listening port:', port);
+function createServer(host) {
+  server.createServer(options, app).listen(port, host, () => {
+    console.log('Host:', `${protocol}://${host || 'localhost'}:${port}/`);
+  });
+}
+
+for(const name in results) {
+  const ips = results[name];
+  for(const ip of ips) {
+    createServer(ip);
+  }
+}
+
+createServer();
--- a/git-serve.js
+++ b/git-serve.js
@ -0,0 +1,246 @@
				@@ -0,0 +1,246 @@
+// @ts-check
+
+// Thanks to https://github.com/mbostock/git-static
+
+var child = require("child_process"),
+    mime = require("mime"),
+    path = require("path");
+
+var shaRe = /^[0-9a-f]{40}$/,
+    emailRe = /^<.*@.*>$/;
+
+function readBlob(repository, revision, file, callback) {
+  var git = child.spawn("git", ["cat-file", "blob", revision + ":" + file], {cwd: repository}),
+      data = [],
+      exit;
+
+  git.stdout.on("data", function(chunk) {
+    data.push(chunk);
+  });
+
+  git.on("exit", function(code) {
+    exit = code;
+  });
+
+  git.on("close", function() {
+    if (exit > 0) return callback(error(exit));
+    callback(null, Buffer.concat(data));
+  });
+
+  git.stdin.end();
+}
+
+exports.readBlob = readBlob;
+
+exports.getBranches = function(repository, callback) {
+  child.exec("git branch -l", {cwd: repository}, function(error, stdout) {
+    if (error) return callback(error);
+    callback(null, stdout.split(/\n/).slice(0, -1).map(function(s) { return s.slice(2); }));
+  });
+};
+
+exports.getSha = function(repository, revision, callback) {
+  child.exec("git rev-parse '" + revision.replace(/'/g, "'\''") + "'", {cwd: repository}, function(error, stdout) {
+    if (error) return callback(error);
+    callback(null, stdout.trim());
+  });
+};
+
+exports.getBranchCommits = function(repository, callback) {
+  child.exec("git for-each-ref refs/heads/ --sort=-authordate --format='%(objectname)\t%(refname:short)\t%(authordate:iso8601)\t%(authoremail)'", {cwd: repository}, function(error, stdout) {
+    if (error) return callback(error);
+    callback(null, stdout.split("\n").map(function(line) {
+      var fields = line.split("\t"),
+          sha = fields[0],
+          ref = fields[1],
+          date = new Date(fields[2]),
+          author = fields[3];
+      if (!shaRe.test(sha) || !date || !emailRe.test(author)) return;
+      return {
+        sha: sha,
+        ref: ref,
+        date: date,
+        author: author.substring(1, author.length - 1)
+      };
+    }).filter(function(commit) {
+      return commit;
+    }));
+  });
+};
+
+exports.getCommit = function(repository, revision, callback) {
+  if (arguments.length < 3) callback = revision, revision = null;
+  child.exec(shaRe.test(revision)
+      ? "git log -1 --date=iso " + revision + " --format='%H\n%ad'"
+      : "git for-each-ref --count 1 --sort=-authordate 'refs/heads/" + (revision ? revision.replace(/'/g, "'\''") : "") + "' --format='%(objectname)\n%(authordate:iso8601)'", {cwd: repository}, function(error, stdout) {
+    if (error) return callback(error);
+    var lines = stdout.split("\n"),
+        sha = lines[0],
+        date = new Date(lines[1]);
+    if (!shaRe.test(sha) || !date) return void callback(new Error("unable to get commit"));
+    callback(null, {
+      sha: sha,
+      date: date
+    });
+  });
+};
+
+exports.getRelatedCommits = function(repository, branch, sha, callback) {
+  if (!shaRe.test(sha)) return callback(new Error("invalid SHA: " + sha));
+  child.exec("git log --format='%H' '" + branch.replace(/'/g, "'\''") + "' | grep -C1 " + sha, {cwd: repository}, function(error, stdout) {
+    if (error) return callback(error);
+    var shas = stdout.split(/\n/),
+        i = shas.indexOf(sha);
+
+    callback(null, {
+      previous: shas[i + 1],
+      next: shas[i - 1]
+    });
+  });
+};
+
+exports.listCommits = function(repository, sha1, sha2, callback) {
+  if (!shaRe.test(sha1)) return callback(new Error("invalid SHA: " + sha1));
+  if (!shaRe.test(sha2)) return callback(new Error("invalid SHA: " + sha2));
+  child.exec("git log --format='%H\t%ad' " + sha1 + ".." + sha2, {cwd: repository}, function(error, stdout) {
+    if (error) return callback(error);
+    callback(null, stdout.split(/\n/).slice(0, -1).map(function(commit) {
+      var fields = commit.split(/\t/);
+      return {
+        sha: fields[0],
+        date: new Date(fields[1])
+      };
+    }));
+  });
+};
+
+/** @type {(repository: string, callback: (err: Error, commits?: {sha: string, date: Date, author: string, subject: string}[]) => void) => void} */
+exports.listAllCommits = function(repository, callback) {
+  child.exec("git log --branches --format='%H\t%ad\t%an\t%s'", {cwd: repository}, function(error, stdout) {
+    if (error) return callback(error);
+    callback(null, stdout.split(/\n/).slice(0, -1).map(function(commit) {
+      var fields = commit.split(/\t/);
+      return {
+        sha: fields[0],
+        date: new Date(fields[1]),
+        author: fields[2],
+        subject: fields[3]
+      };
+    }));
+  });
+};
+
+exports.listTree = function(repository, revision, callback) {
+  child.exec("git ls-tree -r " + revision, {cwd: repository}, function(error, stdout) {
+    if (error) return callback(error);
+    callback(null, stdout.split(/\n/).slice(0, -1).map(function(commit) {
+      var fields = commit.split(/\t/);
+      return {
+        sha: fields[0].split(/\s/)[2],
+        name: fields[1]
+      };
+    }));
+  });
+};
+
+exports.route = function() {
+  var repository = defaultRepository,
+      revision = defaultRevision,
+      file = defaultFile,
+      type = defaultType;
+
+  function route(request, response) {
+    var repository_,
+        revision_,
+        file_;
+
+        // @ts-ignore
+    if ((repository_ = repository(request.url)) == null
+        || (revision_ = revision(request.url)) == null
+        || (file_ = file(request.url)) == null) return serveNotFound();
+
+    readBlob(repository_, revision_, file_, function(error, data) {
+      if (error) return error.code === 128 ? serveNotFound() : serveError(error);
+      response.writeHead(200, {
+        "Content-Type": type(file_),
+        "Cache-Control": "public, max-age=300"
+      });
+      response.end(data);
+    });
+
+    function serveError(error) {
+      response.writeHead(500, {"Content-Type": "text/plain"});
+      response.end(error + "");
+    }
+
+    function serveNotFound() {
+      response.writeHead(404, {"Content-Type": "text/plain"});
+      response.end("File not found.");
+    }
+  }
+
+  route.repository = function(_) {
+    if (!arguments.length) return repository;
+    repository = functor(_);
+    return route;
+  };
+
+  route.sha = // sha is deprecated; use revision instead
+  route.revision = function(_) {
+    if (!arguments.length) return revision;
+    revision = functor(_);
+    return route;
+  };
+
+  route.file = function(_) {
+    if (!arguments.length) return file;
+    file = functor(_);
+    return route;
+  };
+
+  route.type = function(_) {
+    if (!arguments.length) return type;
+    type = functor(_);
+    return route;
+  };
+
+  return route;
+};
+
+function functor(_) {
+  return typeof _ === "function" ? _ : function() { return _; };
+}
+
+function defaultRepository() {
+  return path.join(__dirname, "repository");
+}
+
+function defaultRevision(url) {
+  return decodeURIComponent(url.substring(1, url.indexOf("/", 1)));
+}
+
+function defaultFile(url) {
+  url = url.substring(url.indexOf("/", 1) + 1);
+  const pathIdx = url.indexOf('?');
+  if(pathIdx !== -1) {
+    url = url.slice(0, pathIdx);
+  }
+
+  return decodeURIComponent(url);
+}
+
+function defaultType(file) {
+  var type = mime.getType(file) || "text/plain";
+  return text(type) ? type + "; charset=utf-8" : type;
+}
+
+function text(type) {
+  return /^(text\/)|(application\/(javascript|json)|image\/svg$)/.test(type);
+}
+
+function error(code) {
+  var e = new Error;
+  // @ts-ignore
+  e.code = code;
+  return e;
+}
--- a/package-lock.json
+++ b/package-lock.json
@ -9,6 +9,7 @@
				@@ -9,6 +9,7 @@
      "version": "1.0.0",
      "license": "GPL-3.0-only",
      "dependencies": {
+        "mime": "^3.0.0",
        "webpack-dev-server": "^3.11.2"
      },
      "devDependencies": {
@ -15390,14 +15391,14 @@
				@@ -15390,14 +15391,14 @@
      "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA=="
    },
    "node_modules/mime": {
-      "version": "2.4.4",
-      "resolved": "https://registry.npmjs.org/mime/-/mime-2.4.4.tgz",
-      "integrity": "sha512-LRxmNwziLPT828z+4YkNzloCFC2YM4wrB99k+AV5ZbEyfGNWfG8SO1FUXLmLDBSo89NrJZ4DIWeLjy1CHGhMGA==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/mime/-/mime-3.0.0.tgz",
+      "integrity": "sha512-jSCU7/VB1loIWBZe14aEYHU/+1UMEHoaO7qxCOVJOw9GgH72VAWppxNcjU+x9a2k3GSIBXNKxXQFqRvvZ7vr3A==",
      "bin": {
        "mime": "cli.js"
      },
      "engines": {
-        "node": ">=4.0.0"
+        "node": ">=10.0.0"
      }
    },
    "node_modules/mime-db": {
@ -25914,6 +25915,17 @@
				@@ -25914,6 +25915,17 @@
        "readable-stream": "^2.0.1"
      }
    },
+    "node_modules/webpack-dev-middleware/node_modules/mime": {
+      "version": "2.6.0",
+      "resolved": "https://registry.npmjs.org/mime/-/mime-2.6.0.tgz",
+      "integrity": "sha512-USPkMeET31rOMiarsBNIHZKLGgvKc/LrjofAnBlOttf5ajRvqiRA8QsenbcooctK6d6Ts6aqZXBA+XbkKthiQg==",
+      "bin": {
+        "mime": "cli.js"
+      },
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
    "node_modules/webpack-dev-server": {
      "version": "3.11.2",
      "resolved": "https://registry.npmjs.org/webpack-dev-server/-/webpack-dev-server-3.11.2.tgz",
@ -39180,9 +39192,9 @@
				@@ -39180,9 +39192,9 @@
      }
    },
    "mime": {
-      "version": "2.4.4",
-      "resolved": "https://registry.npmjs.org/mime/-/mime-2.4.4.tgz",
-      "integrity": "sha512-LRxmNwziLPT828z+4YkNzloCFC2YM4wrB99k+AV5ZbEyfGNWfG8SO1FUXLmLDBSo89NrJZ4DIWeLjy1CHGhMGA=="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/mime/-/mime-3.0.0.tgz",
+      "integrity": "sha512-jSCU7/VB1loIWBZe14aEYHU/+1UMEHoaO7qxCOVJOw9GgH72VAWppxNcjU+x9a2k3GSIBXNKxXQFqRvvZ7vr3A=="
    },
    "mime-db": {
      "version": "1.40.0",
@ -47230,6 +47242,11 @@
				@@ -47230,6 +47242,11 @@
            "errno": "^0.1.3",
            "readable-stream": "^2.0.1"
          }
+        },
+        "mime": {
+          "version": "2.6.0",
+          "resolved": "https://registry.npmjs.org/mime/-/mime-2.6.0.tgz",
+          "integrity": "sha512-USPkMeET31rOMiarsBNIHZKLGgvKc/LrjofAnBlOttf5ajRvqiRA8QsenbcooctK6d6Ts6aqZXBA+XbkKthiQg=="
        }
      }
    },
--- a/package.json
+++ b/package.json
@ -20,6 +20,7 @@
				@@ -20,6 +20,7 @@
  "author": "",
  "license": "GPL-3.0-only",
  "dependencies": {
+    "mime": "^3.0.0",
    "webpack-dev-server": "^3.11.2"
  },
  "devDependencies": {