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| author | kcwu <kcwu@63ad8ddf-47c3-0310-b6dd-a9e9d9715204> | 2006-04-08 22:22:10 +0800 |
|---|---|---|
| committer | kcwu <kcwu@63ad8ddf-47c3-0310-b6dd-a9e9d9715204> | 2006-04-08 22:22:10 +0800 |
| commit | 3ddde73259384914a96ce3b764f311e46f9bb376 (patch) | |
| tree | c334e631981680fe2f98f32664dde73dcf94a4f6 /cacheserver | |
| parent | b242a2ce5477eca459d9f24444f0b406101621ac (diff) | |
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deny user login in less than 3 second, to prevent flooding and race condition of multilogin checking.
git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@3337 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
Diffstat (limited to 'cacheserver')
| -rw-r--r-- | cacheserver/utmpserver2.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/cacheserver/utmpserver2.c b/cacheserver/utmpserver2.c index 00e12eaa..3e68a174 100644 --- a/cacheserver/utmpserver2.c +++ b/cacheserver/utmpserver2.c @@ -29,8 +29,9 @@ int action_frequently(int uid) static time_t flood_base_minute; static time_t flood_base_hour; static struct { - unsigned short minute_count; - unsigned short hour_count; + unsigned short lastlogin; // truncated time_t + unsigned char minute_count; + unsigned char hour_count; } flooding[MAX_USERS]; if(minute!=flood_base_minute) { @@ -44,7 +45,8 @@ int action_frequently(int uid) flood_base_hour=hour; } - if(flooding[uid].minute_count>30 || + if(abs(flooding[uid].lastlogin-(unsigned short)now)<=3 || + flooding[uid].minute_count>30 || flooding[uid].hour_count>60) { count_flooding++; return 2; @@ -52,6 +54,7 @@ int action_frequently(int uid) flooding[uid].minute_count++; flooding[uid].hour_count++; + flooding[uid].lastlogin=now; if(flooding[uid].minute_count>5 || flooding[uid].hour_count>20) { |