+++ /dev/null
-
-// huffware script: huff-update client, by fred huffhines.
-//
-// this script is the client side of the update process. it should reside in an object that
-// has scripts which should be automatically updated. it will listen for announcements by
-// an update server and communicate with the server to ensure that all of its scripts are
-// the most up to date available with the server.
-//
-// this script is licensed by the GPL v3 which is documented at: http://www.gnu.org/licenses/gpl.html
-// do not use it in objects without fully realizing you are implicitly accepting that license.
-//
-
-// global constants...
-
-integer DEBUGGING = FALSE; // if TRUE, the script will output status information.
-
-integer SERVER_IGNORE_TIME = 1200; // number of seconds between performing an upgrade with the same server.
-
-integer MAXIMUM_UPDATE_TIME_ALLOWED = 140; // we allow one upgrade process to take this long overall.
-
-integer UPDATE_ANNOUNCEMENT_CHANNEL = -420108; // used by server to brag about itself.
-integer OLD_REQUEST_INVENTORY_CHANNEL = -421008; // used by clients to request an update list.
-
-string UPDATE_ANNOUNCEMENT_PREFIX = "#huff-update#"; // first part of any announcement.
-string REQUEST_INVENTORY_PREFIX = "#huff-reqinv#"; // first part of request for inventory list.
-string REPORT_AVAILABLE_SCRIPTS = "#scripts#"; // server's keyword to let client know script inventory.
-string REQUEST_SCRIPT_UPDATE = "#updatego#"; // keyword used by client to request some updates.
-string SHUT_THEM_DOWN = "#huffdown#"; // server tells client to stop any non-updater scripts.
-string READY_TO_UPDATE = "#listoneeds#"; // the client tells the server the scripts it wants.
-string SCRIPTS_ARE_CURRENT = "#gottemthx#"; // client says this when all new scripts are in place.
-string START_THEM_UP = "#huffup#"; // server tells client to start up other scripts again.
-string DONE_UPDATING = "#finito#"; // the client is done updating.
-string BUSY_BUSY = "#busymuch#"; // a signal that the server is too busy to update us.
-
-float UPDATE_TIMER_INTERVAL = 2.0; // interval between checks on our update status.
-
-integer UPDATER_SCRIPT_PIN = -1231008; // the hook for our scripts to be modified.
-
-///float BUSY_SERVER_PAUSE_TIME = 38.0; // num seconds to delay when server says it's too busy.
-
-string UPDATER_PARM_SEPARATOR = "~~~";
- // three tildes is an uncommon thing to have otherwise, so we use it to separate
- // our commands in linked messages.
-
-string SCRIPT_DEPENDENCY_MARK = "DEP"; // signals that a dependency is coming.
-string ITEM_LIST_SEPARATOR = "``"; // separates dependencies.
-
-integer MAXIMUM_SERVERS_TRACKED = 32;
- // we will listen to this many servers before we decide to remove one.
-
-string CONTINUANCE_MARKER = "...";
- // a string sent when the update list is too long and needs to be continued in another chat.
-
-string SERVER_SCRIPT = "a huffotronic update server";
- // the prefix of our server script that hands out updates.
-
-// global variables...
-
-integer inventory_request_channel; // used for newer version servers to cut down cross chatter.
-list updaters_heard; // the update servers we've heard from recently.
-list last_interactions; // times of the last update process engaged with the updater.
-integer update_channel; // current channel for interaction with specific server.
-key current_server; // the updater that is active right now, if any.
-integer update_start_time; // when the last update process began.
-list updates_needed; // stores the set of scripts that are in need of an update.
-list known_script_dependencies; // stores the list of dependency info.
-
-careful_crankup()
-{
- knock_around_other_scripts(TRUE);
- // clean out the older items and scripts. we do this after getting everyone running
- // since we might be whacking ourselves.
- destroy_older_versions();
-}
-
-// reset our variables.
-initialize()
-{
- updaters_heard = [];
- last_interactions = [];
- inventory_request_channel = 0;
- update_channel = 0;
- current_server = NULL_KEY;
- llSetTimerEvent(0.0);
- llSetRemoteScriptAccessPin(UPDATER_SCRIPT_PIN);
- // a new enhancements; tells the server that this guy has finished an update cycle. this
- // only comes into play when the updater script itself has just been updated, but it's
- // nice for the server to avoid claiming erroneous timeouts occurred.
- llSay(OLD_REQUEST_INVENTORY_CHANNEL, DONE_UPDATING);
- llSleep(0.4); // snooze and repeat to overcome occasionally lossy chats.
- llSay(OLD_REQUEST_INVENTORY_CHANNEL, DONE_UPDATING);
-}
-
-whack_updater_record(key id)
-{
- integer prev_indy = find_in_list(updaters_heard, id);
- if (prev_indy < 0) return; // not there.
- updaters_heard = chop_list(updaters_heard, 0, prev_indy - 1)
- + chop_list(updaters_heard, prev_indy + 1, llGetListLength(updaters_heard) - 1);
- last_interactions = chop_list(last_interactions, 0, prev_indy - 1)
- + chop_list(last_interactions, prev_indy + 1, llGetListLength(last_interactions) - 1);
-}
-
-// note that this new, lower memory version, depends on the inventory functions returning
-// items in alphabetical order.
-scrub_items_by_type(string this_guy, integer inventory_type)
-{
- list removal_list;
- integer outer;
- for (outer = 0; outer < llGetInventoryNumber(inventory_type); outer++) {
- string curr = llGetInventoryName(inventory_type, outer);
- list split = compute_basename_and_version(curr);
- // make sure there was a comparable version number in this name.
- if ( (curr != this_guy) && llGetListLength(split)) {
- string curr_base = llList2String(split, 0);
- float curr_ver = (float)llList2String(split, 1);
-//log_it("outer: " + curr_base + " / " + (string)curr_ver);
- integer inner;
- for (inner = outer + 1; inner < llGetInventoryNumber(inventory_type); inner++) {
- string next_guy = llGetInventoryName(inventory_type, inner);
- list comp_split = compute_basename_and_version(next_guy);
- if (llGetListLength(comp_split)) {
- string comp_base = llList2String(comp_split, 0);
- float comp_ver = (float)llList2String(comp_split, 1);
- // okay, now we can actually compare.
- if (curr_base != comp_base) {
- // break out of inner loop. we are past where the names can matter.
- inner = 2 * llGetInventoryNumber(inventory_type);
- } else {
-//log_it("inner: " + comp_base + " / " + (string)comp_ver);
- if (curr_ver <= comp_ver) {
- // the script at inner index is comparable or better than
- // the script at the outer index.
- removal_list += curr;
- } else {
- // this inner script must be inferior to the outer one,
- // somehow, which defies our expectation of alphabetical ordering.
- removal_list += next_guy;
- }
- }
- }
- }
- }
- }
-
- // now actually do the deletions.
- for (outer = 0; outer < llGetListLength(removal_list); outer++) {
- string to_whack = llList2String(removal_list, outer);
- if (DEBUGGING)
- log_it("removing older asset: " + to_whack);
- llRemoveInventory(to_whack);
- }
-}
-
-// ensures that only the latest version of any script or object is kept in our inventory.
-destroy_older_versions()
-{
- // firstly, iterate across scripts to clean out older versions.
- scrub_items_by_type(llGetScriptName(), INVENTORY_SCRIPT);
- // secondly, try to clean out the objects.
- scrub_items_by_type(llGetScriptName(), INVENTORY_OBJECT);
- // thirdly, try to clean out the notecards.
- scrub_items_by_type(llGetScriptName(), INVENTORY_NOTECARD);
-}
-
-// sets the object to be listening for update info.
-// if "just_owner" is true, then we will not listen on the general announcement channel.
-listen_for_orders(integer just_owner)
-{
- if (!just_owner) {
- // try to hear an update being announced.
- llListen(UPDATE_ANNOUNCEMENT_CHANNEL, "", NULL_KEY, "");
- }
-
- // super secret owner controls.
- llListen(0, "", llGetOwner(), "");
-}
-
-// returns true if this object is a huffotronic updater of some sort.
-integer inside_of_updater()
-{
- return find_substring(llGetObjectName(), "huffotronic") >= 0;
-}
-
-// returns true if a script is a version of our update server.
-integer matches_server_script(string to_check)
-{
- return is_prefix(to_check, SERVER_SCRIPT);
-}
-
-// stops all the scripts besides this one.
-knock_around_other_scripts(integer running_state)
-{
- integer insider = inside_of_updater();
- if (running_state == TRUE) {
- // make sure we crank up the scripts that are new first. we want to reset them
- // as well, which we don't want to do for any existing scripts.
- integer crank_indy;
- for (crank_indy = 0; crank_indy < llGetListLength(updates_needed); crank_indy++) {
- string crankee = llList2String(updates_needed, crank_indy);
- if (find_in_inventory(crankee, INVENTORY_SCRIPT, TRUE) >= 0) {
- if (!insider || matches_server_script(crankee)) {
- // allow it to run again.
- llSetScriptState(crankee, TRUE);
- // reset it, to make sure it starts at the top.
- llResetOtherScript(crankee);
- }
- }
- }
- }
-
- integer indy;
- string self_script = llGetScriptName();
- // we set all other scripts to the running state requested.
- for (indy = 0; indy < llGetInventoryNumber(INVENTORY_SCRIPT); indy++) {
- string curr_script = llGetInventoryName(INVENTORY_SCRIPT, indy);
- if ( (curr_script != self_script)
- && (!insider || matches_server_script(curr_script)) ) {
- // this one seems ripe for being set to the state requested.
- llSetScriptState(curr_script, running_state);
- }
- }
-}
-
-// a random channel for the interaction with the server.
-integer random_channel() { return -(integer)(llFrand(800000) + 20000); }
-
-// make sure that any dependencies for the script with "basename" are added to the list
-// of requests we make during an update.
-list add_dependencies(string basename)
-{
- list to_return;
- integer indy;
- for (indy = 0; indy < llGetListLength(known_script_dependencies); indy++) {
- list deps = llParseString2List(llList2String(known_script_dependencies, indy),
- [ITEM_LIST_SEPARATOR], []);
-//log_it("base=" + llList2String(dep, 0) + " lastver=" + llList2String(dep, 1) + " newdep=" + llList2String(dep, 2));
- if (basename == llList2String(deps, 0)) {
- // first off, is this item with new dependencies actually present?
- integer where = find_in_inventory(basename, INVENTORY_SCRIPT, FALSE);
- if (where >= 0) {
- // we do use the script with deps, but is the dependent item really missing?
- where = find_in_inventory(llList2String(deps, 1), INVENTORY_SCRIPT, FALSE);
- if (where < 0) {
- // we found a dependency match for this script, so we'll ask for the missing item.
- if (DEBUGGING)
- log_it("missing dep: " + llList2String(deps, 1));
- to_return += [ llList2String(deps, 1) ];
- }
- }
- }
- }
- return to_return;
-}
-
-// complains if memory seems to be getting tight.
-test_memory()
-{
- if (llGetFreeMemory() < 4096)
- log_it("mem_free = " + (string)llGetFreeMemory());
-}
-
-// starts an update given a list of scripts that the server has available, encoded as
-// a string in the "encoded_list".
-integer initiate_update(string encoded_list)
-{
- list scripts_avail = llParseString2List(encoded_list, [UPDATER_PARM_SEPARATOR], []);
- integer continue_listening_for_scripts = FALSE;
- // if true, we aren't done hearing about available scripts yet.
- encoded_list = "";
- // figure out which scripts we need by comparing the list available from the server
- // against our current inventory. we only want scripts with newer version numbers.
- integer sindy;
- for (sindy = 0; sindy < llGetListLength(scripts_avail); sindy++) {
- string curr = llList2String(scripts_avail, sindy);
- if (curr == CONTINUANCE_MARKER) {
- // this is a special continuation signal. we need to hear the rest of the list.
- continue_listening_for_scripts = TRUE;
- } else if (is_prefix(curr, SCRIPT_DEPENDENCY_MARK)) {
- // we've found a dependency item.
- known_script_dependencies += [ llGetSubString(curr, llStringLength(SCRIPT_DEPENDENCY_MARK), -1) ];
-//log_it("script dep: " + llGetSubString(curr, llStringLength(SCRIPT_DEPENDENCY_MARK), -1));
- } else {
- list split = compute_basename_and_version(curr);
- if (llGetListLength(split) == 2) {
- string basename = llList2String(split, 0);
- string version = llList2String(split, 1);
- split = [];
- integer oy_indy;
-//replace common code with func.
- for (oy_indy = 0; oy_indy < llGetInventoryNumber(INVENTORY_OBJECT); oy_indy++) {
- list srv_split = compute_basename_and_version
- (llGetInventoryName(INVENTORY_OBJECT, oy_indy));
- if ( (llGetListLength(srv_split) == 2)
- && (basename == llList2String(srv_split, 0))
- && ((float)version > (float)llList2String(srv_split, 1)) ) {
-// if (DEBUGGING) {
- log_it("i need '" + curr + "' from server " + (string)inventory_request_channel);
-// }
- test_memory();
- updates_needed += [ curr ];
- }
- }
- for (oy_indy = 0; oy_indy < llGetInventoryNumber(INVENTORY_NOTECARD); oy_indy++) {
- list srv_split = compute_basename_and_version
- (llGetInventoryName(INVENTORY_NOTECARD, oy_indy));
- if ( (llGetListLength(srv_split) == 2)
- && (basename == llList2String(srv_split, 0))
- && ((float)version > (float)llList2String(srv_split, 1)) ) {
- if (DEBUGGING) {
- log_it("i need '" + curr + "' from server " + (string)inventory_request_channel);
- }
- test_memory();
- updates_needed += [ curr ];
- }
- }
- for (oy_indy = 0; oy_indy < llGetInventoryNumber(INVENTORY_SCRIPT); oy_indy++) {
- list srv_split = compute_basename_and_version
- (llGetInventoryName(INVENTORY_SCRIPT, oy_indy));
- if ( (llGetListLength(srv_split) == 2)
- && (basename == llList2String(srv_split, 0))
- && ((float)version > (float)llList2String(srv_split, 1)) ) {
- if (DEBUGGING) {
- log_it("i need '" + curr + "' from server " + (string)inventory_request_channel);
- }
- test_memory();
- updates_needed += [ curr ];
- }
- }
- updates_needed += add_dependencies(basename);
- }
- }
- }
- // we skip the next step if we're still waiting to hear about more.
- if (continue_listening_for_scripts) {
-//log_it("still listening for more updates...");
- return FALSE;
- }
- if (llGetListLength(updates_needed)) {
-//log_it("update chan=" + (string)update_channel);
- llSay(update_channel, REQUEST_SCRIPT_UPDATE);
- if (DEBUGGING) {
- log_it("told server " + (string)inventory_request_channel + " that i need updating.");
- }
- } else {
- if (DEBUGGING) {
- log_it("told server " + (string)inventory_request_channel + " that i am done updating.");
- }
- llSay(update_channel, DONE_UPDATING);
- }
- return TRUE;
-}
-
-// this alerts the server to our most desired scripts.
-tell_server_our_wish_list()
-{
- llSay(update_channel, READY_TO_UPDATE + wrap_parameters(updates_needed));
-}
-
-// checks whether all of the updates needed are present yet.
-integer check_on_update_presence()
-{
- integer indy;
- for (indy = 0; indy < llGetListLength(updates_needed); indy++) {
- integer found = find_in_inventory(llList2String(updates_needed, indy), INVENTORY_ALL, TRUE);
- // any single missing guy means they aren't up to date yet.
- if (found < 0) {
- if (DEBUGGING) log_it(llList2String(updates_needed, indy) + " not seen as updated yet.");
- return FALSE;
- }
- }
- // nothing was detected as missing anymore.
- return TRUE;
-}
-
-// respond to spoken commands from the server.
-integer process_update_news(integer channel, string name, key id, string message)
-{
- if (!channel) {
- // this is a command.
- if (message == "ureset") {
- llResetScript(); // start over.
- }
- if (message == "ushow") {
- integer sindy;
- integer script_count = llGetInventoryNumber(INVENTORY_SCRIPT);
- list script_list = [ "scripts--" ]; // first item is just a header.
- for (sindy = 0; sindy < script_count; sindy++) {
- script_list += [ llGetInventoryName(INVENTORY_SCRIPT, sindy) ];
- }
- dump_list_to_log(script_list);
- }
- return FALSE; // nothing to do here.
- }
- if (!update_channel && (channel == UPDATE_ANNOUNCEMENT_CHANNEL)) {
-/* never seen. if (id == llGetKey()) {
-if (DEBUGGING) log_it("ignoring update from self.");
- return FALSE; // ack, that's our very object.
- }
-*/
- if (llStringLength(message) > llStringLength(UPDATE_ANNOUNCEMENT_PREFIX)) {
- // this is a new style update message. we can set a different request channel.
- string just_chan = llDeleteSubString(message, 0, llStringLength(UPDATE_ANNOUNCEMENT_PREFIX) - 1);
- inventory_request_channel = (integer)just_chan;
- }
- integer prev_indy = find_in_list(updaters_heard, id);
- // find the talker in our list.
- if (prev_indy >= 0) {
- // that guy was already heard from. check when last interacted.
- integer last_heard = llList2Integer(last_interactions, prev_indy);
- if (llAbs(llGetUnixTime() - last_heard) < SERVER_IGNORE_TIME) {
- return FALSE; // not time to update with this guy again yet.
- }
-// if (DEBUGGING) { log_it("started listening again to server " + (string)id); }
- // make sure we think of this as a new updater now.
- whack_updater_record(id);
- }
-
- if (DEBUGGING) { log_it("heard server " + (string)inventory_request_channel + "'s announcement."); }
- // record our new server.
- current_server = id;
- // make a random pause so not all updaters try to crank up at same time.
- llSleep(randomize_within_range(2.8, 18.2, FALSE));
-
- if (llGetListLength(updaters_heard) > MAXIMUM_SERVERS_TRACKED) {
- // oops, this is not good. we have too many servers now.
-//hmmm: room for improvement here by tossing out the server that is oldest.
- updaters_heard = llDeleteSubList(updaters_heard, 0, 0);
- last_interactions = llDeleteSubList(last_interactions, 0, 0);
- }
-
- // add the talker to our list.
- updaters_heard += id;
- last_interactions += llGetUnixTime();
-
- // begin the update interaction with this guy.
- update_channel = random_channel();
- return TRUE;
- }
- if (update_channel && (channel == update_channel) ) {
- if (is_prefix(message, REPORT_AVAILABLE_SCRIPTS)) {
- // tasty, this is a list of scripts that can be had.
- message = llDeleteSubString(message, 0, llStringLength(REPORT_AVAILABLE_SCRIPTS) - 1);
- if (message == BUSY_BUSY) {
- // server has signified that it's too busy (or its owner is a moron) because it is
- // claiming it has no scripts at all.
- if (DEBUGGING) {
- log_it("server " + (string)inventory_request_channel + " is too busy to update us now.");
- }
- // make it seem like we need to do this one again sooner than normal.
- whack_updater_record(id);
- // busy server means move no further forward.
- return FALSE;
- }
- return initiate_update(message);
- } else if (is_prefix(message, SHUT_THEM_DOWN)) {
- if (DEBUGGING) { log_it("stopping other scripts."); }
- knock_around_other_scripts(FALSE);
- // now that we know for sure the server's ready to update us,
- // we tell it what we need.
- tell_server_our_wish_list();
- return FALSE;
- } else if (is_prefix(message, START_THEM_UP)) {
- // let the server know that we've finished, for all intents and purposes.
- llSay(update_channel, DONE_UPDATING);
- // we pause a random bit first; we want to ensure we aren't swamping
- // SL with our inventory loading.
- llSleep(randomize_within_range(2.5, 8.2, FALSE));
- if (DEBUGGING) { log_it("starting other scripts."); }
- careful_crankup();
- return TRUE; // change state now.
-// } else {
-//log_it("unknown command on update channel: " + message);
- }
- }
- return FALSE;
-}
-
-//////////////
-// from hufflets...
-
-integer debug_num = 0;
-
-// a debugging output method. can be disabled entirely in one place.
-log_it(string to_say)
-{
- debug_num++;
- llWhisper(0, llGetScriptName() + " [" + (string)debug_num + "] (" + (string)llGetFreeMemory() + ") " + to_say);
-}
-
-// returns a number at most "maximum" and at least "minimum".
-// if "allow_negative" is TRUE, then the return may be positive or negative.
-float randomize_within_range(float minimum, float maximum, integer allow_negative)
-{
- if (minimum > maximum) {
- // flip the two if they are reversed.
- float temp = minimum; minimum = maximum; maximum = temp;
- }
- float to_return = minimum + llFrand(maximum - minimum);
- if (allow_negative) {
- if (llFrand(1.0) < 0.5) to_return *= -1.0;
- }
- return to_return;
-}
-
-// returns TRUE if the "pattern" is found in the "full_string".
-integer matches_substring(string full_string, string pattern)
-{ return (find_substring(full_string, pattern) >= 0); }
-
-// returns the index of the first occurrence of "pattern" inside
-// the "full_string". if it is not found, then a negative number is returned.
-integer find_substring(string full_string, string pattern)
-{ return llSubStringIndex(llToLower(full_string), llToLower(pattern)); }
-
-// returns TRUE if the "prefix" string is the first part of "compare_with".
-integer is_prefix(string compare_with, string prefix)
-{ return find_substring(compare_with, prefix) == 0; }
-
-// locates the string "text" in the list to "search_in".
-integer find_in_list(list search_in, string text)
-{
- integer len = llGetListLength(search_in);
- integer i;
- for (i = 0; i < len; i++) {
- if (llList2String(search_in, i) == text)
- return i;
- }
- return -1;
-}
-
-// returns the portion of the list between start and end, but only if they are
-// valid compared with the list length. an attempt to use negative start or
-// end values also returns a blank list.
-list chop_list(list to_chop, integer start, integer end)
-{
- integer last_len = llGetListLength(to_chop) - 1;
- if ( (start < 0) || (end < 0) || (start > last_len) || (end > last_len) ) return [];
- return llList2List(to_chop, start, end);
-}
-
-// joins a list of parameters using the parameter sentinel for the library.
-string wrap_parameters(list to_flatten)
-{ return llDumpList2String(to_flatten, UPDATER_PARM_SEPARATOR); }
-
-// locates the item with "name_to_find" in the inventory items with the "type".
-// a value from 0 to N-1 is returned if it's found, where N is the number of
-// items in the inventory.
-integer find_in_inventory(string name_to_find, integer inv_type, integer exact_match)
-{
- integer num_inv = llGetInventoryNumber(inv_type);
- if (num_inv == 0) return -1; // nothing there!
- integer inv;
- for (inv = 0; inv < num_inv; inv++) {
- if (exact_match && (llGetInventoryName(inv_type, inv) == name_to_find) )
- return inv;
- else if (!exact_match && is_prefix(llGetInventoryName(inv_type, inv), name_to_find))
- return inv;
- }
- return -2; // failed to find it.
-}
-
-//////////////
-
-integer MAX_CHAT_LINE = 900;
- // the most characters we'll try to say in one chat.
-
-dump_list_to_log(list to_show)
-{
- string text = dump_list(to_show); // get some help from the other version.
- integer len = llStringLength(text);
- integer i;
- for (i = 0; i < len; i += MAX_CHAT_LINE) {
- integer last_bit = i + MAX_CHAT_LINE - 1;
- if (last_bit >= len) last_bit = len - 1;
- string next_line = llGetSubString(text, i, last_bit);
- llWhisper(0, next_line);
- }
-}
-
-// returns a printable form of the list.
-string dump_list(list to_show)
-{
- integer len = llGetListLength(to_show);
- integer i;
- string text;
- for (i = 0; i < len; i++) {
- string next_line = llList2String(to_show, i);
- if (find_substring(next_line, " ") >= 0) {
- // this guy has a space in it, so quote it.
- next_line = "\"" + next_line + "\"";
- }
- text = text + next_line;
- if (i < len - 1) text = text + " ";
- }
- return text;
-}
-
-//////////////
-// huffware script: auto-retire, by fred huffhines, version 2.8.
-// distributed under BSD-like license.
-// !! keep in mind that this code must be *copied* into another
-// !! script that you wish to add auto-retirement capability to.
-// when a script has auto_retire in it, it can be dropped into an
-// object and the most recent version of the script will destroy
-// all older versions.
-//
-// the version numbers are embedded into the script names themselves.
-// the notation for versions uses a letter 'v', followed by two numbers
-// in the form "major.minor".
-// major and minor versions are implicitly considered as a floating point
-// number that increases with each newer version of the script. thus,
-// "hazmap v0.1" might be the first script in the "hazmap" script continuum,
-// and "hazmap v3.2" is a more recent version.
-//
-// example usage of the auto-retirement script:
-// default {
-// state_entry() {
-// auto_retire(); // make sure newest addition is only version of script.
-// }
-// }
-// this script is partly based on the self-upgrading scripts from markov brodsky
-// and jippen faddoul.
-//////////////
-auto_retire() {
- string self = llGetScriptName(); // the name of this script.
- list split = compute_basename_and_version(self);
- if (llGetListLength(split) != 2) return; // nothing to do for this script.
- string basename = llList2String(split, 0); // script name with no version attached.
- string version_string = llList2String(split, 1); // the version found.
- integer posn;
- // find any scripts that match the basename. they are variants of this script.
- for (posn = llGetInventoryNumber(INVENTORY_SCRIPT) - 1; posn >= 0; posn--) {
- string curr_script = llGetInventoryName(INVENTORY_SCRIPT, posn);
- if ( (curr_script != self) && (llSubStringIndex(curr_script, basename) == 0) ) {
- // found a basic match at least.
- list inv_split = compute_basename_and_version(curr_script);
- if (llGetListLength(inv_split) == 2) {
- // see if this script is more ancient.
- string inv_version_string = llList2String(inv_split, 1); // the version found.
- // must make sure that the retiring script is completely the identical basename;
- // just matching in the front doesn't make it a relative.
- if ( (llList2String(inv_split, 0) == basename)
- && ((float)inv_version_string < (float)version_string) ) {
- // remove script with same name from inventory that has inferior version.
- llRemoveInventory(curr_script);
- }
- }
- }
- }
-}
-//
-// separates the base script name and version number. used by auto_retire.
-list compute_basename_and_version(string to_chop_up)
-{
- // minimum script name is 2 characters plus a version.
- integer space_v_posn;
- // find the last useful space and 'v' combo.
- for (space_v_posn = llStringLength(to_chop_up) - 3;
- (space_v_posn >= 2) && (llGetSubString(to_chop_up, space_v_posn, space_v_posn + 1) != " v");
- space_v_posn--) {
- // look for space and v but do nothing else.
- }
- if (space_v_posn < 2) return []; // no space found.
- // now we zoom through the stuff after our beloved v character and find any evil
- // space characters, which are most likely from SL having found a duplicate item
- // name and not so helpfully renamed it for us.
- integer indy;
- for (indy = llStringLength(to_chop_up) - 1; indy > space_v_posn; indy--) {
- if (llGetSubString(to_chop_up, indy, indy) == " ") {
- // found one; zap it. since we're going backwards we don't need to
- // adjust the loop at all.
- to_chop_up = llDeleteSubString(to_chop_up, indy, indy);
- }
- }
- string full_suffix = llGetSubString(to_chop_up, space_v_posn, -1);
- // ditch the space character for our numerical check.
- string chop_suffix = llGetSubString(full_suffix, 1, llStringLength(full_suffix) - 1);
- // strip out a 'v' if there is one.
- if (llGetSubString(chop_suffix, 0, 0) == "v")
- chop_suffix = llGetSubString(chop_suffix, 1, llStringLength(chop_suffix) - 1);
- // if valid floating point number and greater than zero, that works for our version.
- string basename = to_chop_up; // script name with no version attached.
- if ((float)chop_suffix > 0.0) {
- // this is a big success right here.
- basename = llGetSubString(to_chop_up, 0, -llStringLength(full_suffix) - 1);
- return [ basename, chop_suffix ];
- }
- // seems like we found nothing useful.
- return [];
-}
-//
-//////////////
-
-// end hufflets.
-//////////////
-
-// no huffotronic trap state for startup, because this script will actually
-// run (and is expected) inside a huffotronic updater object.
-
-default
-{
- state_entry()
- {
- auto_retire(); // only allow the most recent revision.
- initialize();
- state awaiting_commands;
- }
-}
-
-state awaiting_commands
-{
- state_entry()
- {
- if (DEBUGGING) log_it("<awaiting_commands>");
- careful_crankup(); // we always start by getting everyone running.
- current_server = NULL_KEY; // forget previous server.
- listen_for_orders(FALSE);
- inventory_request_channel = 0; // no inventory request channel either.
- update_channel = 0; // no channel currently.
- updates_needed = []; // we know of no needs right now.
- known_script_dependencies = []; // no deps either.
- }
-
- state_exit() { llSetTimerEvent(0.0); }
-
- listen(integer channel, string name, key id, string message)
- {
- if ((id != llGetOwner()) && (llGetOwnerKey(id) != llGetOwner())) {
- return; // must be same owner to ensure proper perms.
- }
- if (process_update_news(channel, name, id, message))
- state establish_private_channel;
- }
-}
-
-state establish_private_channel
-{
- state_entry()
- {
- if (DEBUGGING) log_it("<establish_private_channel>");
- llListen(update_channel, "", current_server, "");
- listen_for_orders(TRUE);
- if (inventory_request_channel)
- llSay(inventory_request_channel, REQUEST_INVENTORY_PREFIX + (string)update_channel);
- else
- llSay(OLD_REQUEST_INVENTORY_CHANNEL, REQUEST_INVENTORY_PREFIX + (string)update_channel);
- llSetTimerEvent(MAXIMUM_UPDATE_TIME_ALLOWED);
- }
-
- state_exit() { llSetTimerEvent(0); }
-
- listen(integer channel, string name, key id, string message)
- {
- if ((id != llGetOwner()) && (llGetOwnerKey(id) != llGetOwner())) {
- return; // must be same owner to ensure proper perms.
- }
- if (process_update_news(channel, name, id, message)) {
- // ready for a state change, but what kind?
- if (llGetListLength(updates_needed)) {
-//log_it("have a list of updates now.");
- state performing_update;
- } else {
-//log_it("no updates needed in list, going back");
- state awaiting_commands;
- }
- }
- }
-
- timer() {
- if (DEBUGGING) {
- log_it("timed out establishing channel with server " + (string)inventory_request_channel);
- }
- whack_updater_record(current_server);
- state awaiting_commands;
- }
-
- on_rez(integer parm) { state default; }
-}
-
-state performing_update
-{
- state_entry()
- {
- // must re-listen after a state change.
- llListen(update_channel, "", current_server, "");
- listen_for_orders(TRUE);
- if (DEBUGGING) log_it("<performing_update>");
- llSetTimerEvent(UPDATE_TIMER_INTERVAL);
- update_start_time = llGetUnixTime();
- }
-
- state_exit() { llSetTimerEvent(0.0); }
-
- listen(integer channel, string name, key id, string message)
- {
- if ((id != llGetOwner()) && (llGetOwnerKey(id) != llGetOwner())) {
- return; // must be same owner to ensure proper perms.
- }
- if (process_update_news(channel, name, id, message)) {
- // normal finish of update process.
- state awaiting_commands;
- }
- }
-
- timer() {
- if (llGetListLength(updates_needed) == 0) {
-//log_it("nothing to update, leaving perform state.");
- state awaiting_commands; // we've got nothing to do.
- } else {
- // see if all our requested scripts are there yet; if not, we're not done updating.
- integer ready = check_on_update_presence();
- if (ready) {
- if (DEBUGGING) log_it("reporting scripts are current.");
- llSay(update_channel, SCRIPTS_ARE_CURRENT);
- }
- }
- if (llAbs(update_start_time - llGetUnixTime()) >= MAXIMUM_UPDATE_TIME_ALLOWED) {
- if (DEBUGGING) { log_it("timeout during update process with server " + (string)inventory_request_channel); }
- whack_updater_record(current_server);
- state awaiting_commands;
- }
- }
-
- on_rez(integer parm) { state default; }
-}
-
projects / feisty_meow.git / blobdiff