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Update change log for 4.3.30

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This commit is contained in:
Markus Armbruster 2012-04-26 20:15:48 +02:00
parent 0b1218f164
commit 4aaea42a83
2 changed files with 204 additions and 6 deletions
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105
doc/CHANGES4.X
View file

@ -1,3 +1,101 @@
Changes to Empire 4.3.30 - Thu Apr 26 18:14:49 UTC 2012
* Change login command kill (used by client option -k) to kill less
ruthlessly: send a flash message and try to flush output, exactly
like a server shutdown does.
* Fix server shutdown to wait for player threads to reach a safe
state. Without that, we could fail to update the treasury, record
play time, and write log entries. The old code is racy. It goes
back to Empire 2. It was patched in 4.2.10, 4.2.12, 4.2.20, 4.3.6,
4.3.10 and 4.3.23, but the core problem remained unaddressed.
* When shutdown aborts a command, the terminating player thread could
still get stuck sending output, and thus lose the race just
mentioned. Broken in 4.3.23.
* Idle timeout changes:
- The grace period for clients to complete login and logout is now
separate from the idle timeout. Configurable with new econfig
key login_grace_time, default is 120 seconds.
- The idle timeout for visitors is now separate from the one for
players. Configurable with new econfig key max_idle_visitor,
default is five minutes.
- Fix the idle timeout when the connection gets stuck sending
output. Broken in 4.3.20.
- Idle timeout during execute now terminates the connection, not
just the execute command.
* Fix stack smash in build. Remote hole! Broken when Empire 2 added
the confirmation prompt.
* Fix stack smash in scrap and scuttle. Remote hole! Broken when
Chainsaw added the confirmation prompt. Additionally, the
confirmation prompt is misleading when the player supplies
conditionals. Redesign the flawed prompt.
* Fix execute's echo of the command. Broken in 4.3.28.
* The mobility cost of retreating a defending land unit was
calculated for an uninitialized sector. This could charge
incorrect mobility, prevent retreat, or, if the stars align just
right, crash the server. Broken in 4.3.6.
* Commands cutoff, headlines, land, lstat, motd, neweff, payoff,
qorder, sorder, and wall now behave like the other information
query commands when the player's connection can't take more output:
they pause to let other code run.
* Revised command permissions:
- arm and disarm no longer require money, for consistency with the
other commands to move stuff around.
- satellite no longer requires money, for consistency with lookout,
radar, sonar and skywatch.
- qorder, sorder, survey and test no longer require a capital, for
consistency with the other commands that report on stuff the
player owns.
- start and stop no longer require a capital, for consistency with
the other commands to control production.
- fortify now requires a capital, for consistency with mission,
morale and range.
- Anybody may now use country, echo and financial.
- Visitors can no longer use census, commodity, map, nmap,
sinfrastructure (useless without sectors), read (visitors don't
get any telegrams), and change (always failed).
- Players can no longer use map and nmap before break. This is
consistent with all the other commands to examine the
environment. It also prevents people from trying multiple
unbroken countries in a blitz to find the one with the nicest
vicinity.
- Players can now use resource before break, just like census.
* read could swallow the first telegram header when showing the
telegrams that arrived while waiting for the player to confirm
deletion. Broken in 4.3.29.
* Fix 'm' in path argument of explore, move, transport:
- Don't moan about deprecated argument syntax ('m' without a space
before its argument) even when there's no argument.
- Recognize the flags argument again.
Broken in 4.3.27.
* Market fixes:
- Command market is no longer available to visitors, because it
triggers execution of trades that have become ready.
- Fix a race condition that could cause commodity trades to be
executed multiple times. Abusing this to duplicate commodities
seems tricky, but possible. Broken in Empire 3.
- Don't expropriate sellers of units. POGO got the the money, the
telegrams and made the news, the seller got nothing. Broken in
4.3.17.
* Login command quit and server shutdown could lose player output.
4.3.23 tried to fix the shutdown case, but the fix was incomplete.
* Fix login command quit to really quit. It sometimes just swallowed
buffered input, at least on some systems.
* 4.2.22's fairer command scheduling failed to cover the execute
command. Fix that.
* When a client shuts down input transmission to log out, output
could get lost. Our client never does that.
* Don't skip post command treasury update and status notification on
EOF from player, after quit command, and when command is aborted by
server shutdown. An unluckily timed EOF or shutdown can deprive a
player of money gained from scuttling tradeships or sacking a
capital. Can be abused to build bridges and infrastructure free of
charge. Can also be abused to designate sectors for free, but the
stock game's sector types are all free anyway. Has always been
broken.
* Fix client not to send an empty line on player interrupt (normally
^C) before the first command. This was missed in 4.3.26.
* Code and info page cleanup.
* Documentation fixes.
Changes to Empire 4.3.29 - Fri Jan 20 19:20:20 UTC 2012
* drop and fly from carrier could fail to load last civilian or
military.
@ -92,7 +190,7 @@ Changes to Empire 4.3.28 - Sat Jul 16 11:30:53 UTC 2011
carrier moved. Abusable, but it involves going broke, so it's
rarely practical. Slightly more practical before 4.3.6 removed
budget priorities. Broken for ships and land units when Empire 2
added their maintenance cost, and for planes when v4.3.3 replaced
added their maintenance cost, and for planes when 4.3.3 replaced
nuclear stockpiles by nuke units.
* Fix bogus internal error triggered by navigate and march
sub-commands 'r', 'l' and 's'. Broken in 4.3.27.
@ -151,7 +249,7 @@ Changes to Empire 4.3.28 - Sat Jul 16 11:30:53 UTC 2011
* Fix "show land s" to show columns xpl and lnd again. Broken in
4.3.15.
* Code refactoring and cleanup.
* Documentation on custom tables, xdump updated.
* Documentation on custom tables and xdump updated.
* Info file fixes.
Changes to Empire 4.3.27 - Sun Apr 17 11:36:29 UTC 2011
@ -168,7 +266,8 @@ Changes to Empire 4.3.27 - Sun Apr 17 11:36:29 UTC 2011
now gone.
* Fix give, setsector and setres not to wipe out concurrent updates.
* Fix explore, move, test, transport not to ignore spaces in path
arguments. Broken in 4.3.7.
arguments. Broken in 4.3.7. Deprecate use of 'm' without space
before its argument.
* Improvements to map drawing commands:
- Don't fail silently when asked to draw a map around an invalid
unit, explain the problem.

105
info/Empire4.t
View file

@ -7,6 +7,104 @@ new Empire4 Server. This outlines the various changes and how they
will affect you, the player. These were coded as the Wolfpack project,
and bug-reports should be sent to <wolfpack@wolfpackempire.com>.
.NF
Changes to Empire 4.3.30 - Thu Apr 26 18:14:49 UTC 2012
* Change login command kill (used by client option -k) to kill less
ruthlessly: send a flash message and try to flush output, exactly
like a server shutdown does.
* Fix server shutdown to wait for player threads to reach a safe
state. Without that, we could fail to update the treasury, record
play time, and write log entries. The old code is racy. It goes
back to Empire 2. It was patched in 4.2.10, 4.2.12, 4.2.20, 4.3.6,
4.3.10 and 4.3.23, but the core problem remained unaddressed.
* When shutdown aborts a command, the terminating player thread could
still get stuck sending output, and thus lose the race just
mentioned. Broken in 4.3.23.
* Idle timeout changes:
- The grace period for clients to complete login and logout is now
separate from the idle timeout. Configurable with new econfig
key login_grace_time, default is 120 seconds.
- The idle timeout for visitors is now separate from the one for
players. Configurable with new econfig key max_idle_visitor,
default is five minutes.
- Fix the idle timeout when the connection gets stuck sending
output. Broken in 4.3.20.
- Idle timeout during execute now terminates the connection, not
just the execute command.
* Fix stack smash in build. Remote hole! Broken when Empire 2 added
the confirmation prompt.
* Fix stack smash in scrap and scuttle. Remote hole! Broken when
Chainsaw added the confirmation prompt. Additionally, the
confirmation prompt is misleading when the player supplies
conditionals. Redesign the flawed prompt.
* Fix execute's echo of the command. Broken in 4.3.28.
* The mobility cost of retreating a defending land unit was
calculated for an uninitialized sector. This could charge
incorrect mobility, prevent retreat, or, if the stars align just
right, crash the server. Broken in 4.3.6.
* Commands cutoff, headlines, land, lstat, motd, neweff, payoff,
qorder, sorder, and wall now behave like the other information
query commands when the player's connection can't take more output:
they pause to let other code run.
* Revised command permissions:
- arm and disarm no longer require money, for consistency with the
other commands to move stuff around.
- satellite no longer requires money, for consistency with lookout,
radar, sonar and skywatch.
- qorder, sorder, survey and test no longer require a capital, for
consistency with the other commands that report on stuff the
player owns.
- start and stop no longer require a capital, for consistency with
the other commands to control production.
- fortify now requires a capital, for consistency with mission,
morale and range.
- Anybody may now use country, echo and financial.
- Visitors can no longer use census, commodity, map, nmap,
sinfrastructure (useless without sectors), read (visitors don't
get any telegrams), and change (always failed).
- Players can no longer use map and nmap before break. This is
consistent with all the other commands to examine the
environment. It also prevents people from trying multiple
unbroken countries in a blitz to find the one with the nicest
vicinity.
- Players can now use resource before break, just like census.
* read could swallow the first telegram header when showing the
telegrams that arrived while waiting for the player to confirm
deletion. Broken in 4.3.29.
* Fix 'm' in path argument of explore, move, transport:
- Don't moan about deprecated argument syntax ('m' without a space
before its argument) even when there's no argument.
- Recognize the flags argument again.
Broken in 4.3.27.
* Market fixes:
- Command market is no longer available to visitors, because it
triggers execution of trades that have become ready.
- Fix a race condition that could cause commodity trades to be
executed multiple times. Abusing this to duplicate commodities
seems tricky, but possible. Broken in Empire 3.
- Don't expropriate sellers of units. POGO got the the money, the
telegrams and made the news, the seller got nothing. Broken in
4.3.17.
* Login command quit and server shutdown could lose player output.
4.3.23 tried to fix the shutdown case, but the fix was incomplete.
* Fix login command quit to really quit. It sometimes just swallowed
buffered input, at least on some systems.
* 4.2.22's fairer command scheduling failed to cover the execute
command. Fix that.
* When a client shuts down input transmission to log out, output
could get lost. Our client never does that.
* Don't skip post command treasury update and status notification on
EOF from player, after quit command, and when command is aborted by
server shutdown. An unluckily timed EOF or shutdown can deprive a
player of money gained from scuttling tradeships or sacking a
capital. Can be abused to build bridges and infrastructure free of
charge. Can also be abused to designate sectors for free, but the
stock game's sector types are all free anyway. Has always been
broken.
* Fix client not to send an empty line on player interrupt (normally
^C) before the first command. This was missed in 4.3.26.
* Code and info page cleanup.
* Documentation fixes.
Changes to Empire 4.3.29 - Fri Jan 20 19:20:20 UTC 2012
* drop and fly from carrier could fail to load last civilian or
military.
@ -101,7 +199,7 @@ Changes to Empire 4.3.28 - Sat Jul 16 11:30:53 UTC 2011
carrier moved. Abusable, but it involves going broke, so it's
rarely practical. Slightly more practical before 4.3.6 removed
budget priorities. Broken for ships and land units when Empire 2
added their maintenance cost, and for planes when v4.3.3 replaced
added their maintenance cost, and for planes when 4.3.3 replaced
nuclear stockpiles by nuke units.
* Fix bogus internal error triggered by navigate and march
sub-commands 'r', 'l' and 's'. Broken in 4.3.27.
@ -160,7 +258,7 @@ Changes to Empire 4.3.28 - Sat Jul 16 11:30:53 UTC 2011
* Fix "show land s" to show columns xpl and lnd again. Broken in
4.3.15.
* Code refactoring and cleanup.
* Documentation on custom tables, xdump updated.
* Documentation on custom tables and xdump updated.
* Info file fixes.
Changes to Empire 4.3.27 - Sun Apr 17 11:36:29 UTC 2011
@ -177,7 +275,8 @@ Changes to Empire 4.3.27 - Sun Apr 17 11:36:29 UTC 2011
now gone.
* Fix give, setsector and setres not to wipe out concurrent updates.
* Fix explore, move, test, transport not to ignore spaces in path
arguments. Broken in 4.3.7.
arguments. Broken in 4.3.7. Deprecate use of 'm' without space
before its argument.
* Improvements to map drawing commands:
- Don't fail silently when asked to draw a map around an invalid
unit, explain the problem.