Add some util functions

servers/home/utils.ts

@@ -1,7 +1,15 @@
+// noinspection JSUnusedGlobalSymbols
+
 import {NS} from "NetscriptDefinitions";
+
+/**
+ * Recursively scans all servers connected to the current server, excluding home
+ * @param ns global NS object
+ * @returns A list of all servers connected to the current server
+ */
 export function recursiveScan(ns: NS) {
     // Starting case
-	let servers = ns.scan(ns.getHostname());
+	let servers = ns.scan("home");
     // Add all servers to the list
     let allServers: string[] = [];
     while (servers.length > 0) {
@@ -17,7 +25,87 @@ export function recursiveScan(ns: NS) {
         }
     }
     // Remove the current server
-    allServers.splice(allServers.indexOf(ns.getHostname()), 1);
+    allServers.splice(allServers.indexOf("home"), 1);
     // Print all servers
     return allServers;
 }
+
+/**
+ * Removes files passed in from all servers
+ * @param ns Global NS object
+ * @param files The files to remove
+ * @returns void
+ * @example Removes all files from the folder "no-ports" from all servers.
+ * removeFilesOnAllServers(ns, ns.ls("home", "no-ports"));
+ * @note ns.ls() returns the full path of every file, so if the file is not in the same place in every server,
+ * you will need to modify each file path to match the server you are removing it from.
+ */
+export function removeFilesOnAllServers(ns: NS, files: string[]) {
+    let hosts = recursiveScan(ns);
+    for(const host of hosts) {
+        for (const file of files) {
+            ns.rm(file, host)
+        }
+    }
+}
+
+/**
+ * Tries to gain root access to a server
+ * @param ns Global NS object
+ * @param server The server to gain root access to
+ * @returns The number of programs used to gain root access
+ */
+export function rootServer(ns: NS, server: string) {
+    let counter = 0;
+    if (ns.fileExists("BruteSSH.exe", "home")) {
+        ns.brutessh(server);
+        counter++;
+    }
+    if (ns.fileExists("FTPCrack.exe", "home")) {
+        ns.ftpcrack(server);
+        counter++;
+    }
+    if (ns.fileExists("SMTPCrack.exe", "home")) {
+        ns.relaysmtp(server);
+        counter++;
+    }
+    if (ns.fileExists("HTTPWorm.exe", "home")) {
+        ns.httpworm(server);
+        counter++;
+    }
+    if (ns.fileExists("SQLInject.exe", "home")) {
+        ns.sqlinject(server);
+        counter++;
+    }
+    ns.nuke(server)
+    return counter;
+}
+
+/**
+ * Performs a function on a server if the player is capable of doing so, otherwise returns false
+ * @param ns Global NS object
+ * @param server The server to perform the function on
+ * @param func The function to perform
+ * @param args The arguments to pass to the function
+ * @returns The result of the function if it is performed or true if the function does not return anything, otherwise false
+ */
+export function performFunctionIfCapable(ns: NS, server: string, func: CallableFunction, args: any[]) {
+    if (ns.getHackingLevel() < ns.getServerRequiredHackingLevel(server)) {
+        return false;
+    }
+    if (ns.getServerNumPortsRequired(server) < ns.getServer(server).openPortCount) {
+        if (rootServer(ns, server) < ns.getServerNumPortsRequired(server)) {
+            return false;
+        }
+    }
+    if (!ns.hasRootAccess(server)) {
+        return false;
+
+    }
+    let result = func(...args);
+    if (result === undefined) {
+        return true;
+    } else {
+        return result;
+    }
+}