Fix #617 - Initial import of the codeshare plugin

plugins/Makefile

@@ -0,0 +1,8 @@
+PD=$(shell r2 -H R2_USER_PLUGINS)
+
+all:
+	mkdir -p "$(PD)"
+	cp -f codeshare.r2.js "$(PD)"
+
+uninstall:
+	rm rm -f "$(PD)/codeshare.r2.js"

plugins/codeshare.r2.js

@@ -0,0 +1,160 @@
+var codeShareRegisterPlugin = (function() {
+	const url = "https://codeshare.frida.re";
+	const version = "0.1.0";
+	const author = "pancake";
+
+	const projects = new Set();
+	const results = new Set();
+	function codeShareSearch(word) {
+		if (projects.size > 0) {
+			for (const line of projects.values()) {
+				if (line.indexOf(word) !== -1) {
+					console.log(line);
+				}
+			}
+			return;
+		}
+		var pages = 2; // TODO: pull last page from main page
+		const wheel = "|/-\\";
+		for (var page = 1; page < pages; page++) {
+			const ch = wheel[page%wheel.length];
+			const res = r2.syscmds("curl -s '" + url + "/browse?page=" + page + "'").trim();
+			const hits = results.size;
+			const count = projects.size;
+			write("\r["+ch+"] Caching page " + page + "/" + pages + " ("+hits+"/"+count+")\r[");
+			flush();
+			if (res === "") {
+				console.error ("Oops");
+				break;
+			}
+			let lastPage = 1;
+			for (const line of res.split("\n")) {
+				const pageat = line.indexOf("?page=");
+				if (pageat !== -1) {
+					const pageNumber = Number.parseInt(line.slice(pageat + 6));
+					if (pageNumber > lastPage) {
+						lastPage = pageNumber;
+					}
+				}
+				const at = line.indexOf("re/@");
+				if (at !== -1) {
+					const line2 = line.slice(at + 4)
+					const to = line2.indexOf("/\"");
+					if (to !== -1) {
+						const line3 = line2.slice(0, to);
+						projects.add(line3);
+						if (line3.indexOf(word) !== -1) {
+							results.add(line3);
+						}
+					}
+				}
+			}
+			if (lastPage > pages) {
+				pages = lastPage;
+			}
+		}
+		write("\r");
+		flush();
+
+		for (const line of results.values()) {
+			console.log(line);
+		}
+	}
+
+	function codeShareDescribe(path) {
+		const res = r2.syscmds("curl -s " + url + "/api/project/" + path + ".js");
+		const obj = JSON.parse(res);
+		const r = [
+			"Name: " + obj.project_name,
+			"Description: " + obj.description,
+			"Frida: " + obj.frida_version
+		];
+		// return JSON.stringify (JSON.parse(res), null, 2);
+		return r.join("\n");;
+	}
+
+	function codeShareCat(path) {
+		const res = r2.syscmds("curl -s " + url + "/api/project/" + path + ".js");
+		return JSON.parse(res).source;
+	}
+
+	function codeShareInject(path) {
+		if (!inFrida ()) {
+			console.error ("Use r2 frida://");
+			return;
+		}
+
+		const res = r2.syscmd("curl -s " + url + "/api/project/" + path + ".js | jq .source > .script.r2frida.js");
+		// TODO: check if file is > 0
+		r2.cmd(":. .script.r2frida.js");
+		r2.cmd("rm .script.r2frida.js");
+		/*
+		   const res = r2.syscmds("curl " + url + "/api/project/" + path + ".js");
+		   console.log(res);
+		   const source = JSON.parse(res).source;
+		   const b64source = b64(source);
+		   console.log(source);
+		 */
+	}
+	function codeShareUsage() {
+		console.log("Usage: codeshare [-flag] [..]");
+		console.log("codeshare -s jail     # search for scripts containing 'jail'");
+		console.log("codeshare -i foo/bar  # inject foo/bar script. requires r2frida session");
+		console.log("codeshare -c foo/bar  # cat script");
+		console.log("codeshare -d foo/bar  # describe script");
+		console.log("codeshare -v          # show version");
+	}
+	function inFrida(path) {
+		return r2.cmd("o").indexOf("frida://") !== -1;
+	}
+	function codeShare(path) {
+		if (path.startsWith("-s")) {
+			return codeShareSearch(path.slice(2).trim());
+		} else if (path.startsWith("-i")) {
+			return codeShareInject(path.slice(2).trim());
+		} else if (path.startsWith("-d")) {
+			return console.log(codeShareDescribe(path.slice(2).trim()));
+		} else if (path.startsWith("-c")) {
+			return console.log(codeShareCat(path.slice(2).trim()));
+		} else if (path.startsWith("-v")) {
+			return console.log(version);
+		} else {
+			return codeShareUsage ();
+		}
+	}
+	function codeShareCommand(cmd) {
+		const args = cmd.substr(9).trim();
+		if (args.startsWith("-h") || args === "") {
+			codeShareUsage();
+		} else {
+			codeShare(args);
+		}
+	}
+
+	function main() {
+		r2.unload('core', 'codeshare');
+		r2.plugin('core', function () {
+			function coreCall (cmd) {
+				if (cmd.startsWith('codeshare')) {
+					try {
+						codeShareCommand(cmd);
+					} catch (e) {
+						console.error(e);
+					}
+					return true;
+				}
+				return false;
+			}
+			return {
+				name: 'codeshare',
+				author: author,
+				license: 'MIT',
+				desc: 'pull and run codeshare scripts via r2frida',
+				call: coreCall
+			};
+		});
+	}
+	return main;
+})();
+codeShareRegisterPlugin();
+