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Hash pubkeys for early out during stat retrieval

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This commit is contained in:
AJ Martinez 2023-04-11 23:09:40 -07:00
parent 515e0baa01
commit 2426170e0b
2 changed files with 15 additions and 3 deletions
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16
src/k_serverstats.c
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@ -112,6 +112,7 @@ void SV_LoadStats(void)
{
trackedList[i].powerlevels[j] = READUINT16(save.p);
}
trackedList[i].hash = quickncasehash((char*)trackedList[i].public_key, PUBKEYLENGTH);
}
}
@ -163,13 +164,17 @@ void SV_SaveStats(void)
// New player, grab their stats from trackedList or initialize new ones if they're new
serverplayer_t *SV_RetrieveStats(uint8_t *key)
{
UINT32 j;
UINT32 j, hash;
SV_InitializeStats();
hash = quickncasehash((char*)key, PUBKEYLENGTH);
// Existing record?
for(j = 0; j < numtracked; j++)
{
if (hash != trackedList[j].hash) // Not crypto magic, just an early out with a faster comparison
continue;
if (memcmp(trackedList[j].public_key, key, PUBKEYLENGTH) == 0)
return &trackedList[j];
}
@ -184,6 +189,7 @@ serverplayer_t *SV_RetrieveStats(uint8_t *key)
{
trackedList[numtracked].powerlevels[j] = PR_IsKeyGuest(key) ? 0 : PWRLVRECORD_START;
}
trackedList[numtracked].hash = quickncasehash((char*)key, PUBKEYLENGTH);
numtracked++;
@ -193,7 +199,7 @@ serverplayer_t *SV_RetrieveStats(uint8_t *key)
// Write player stats to trackedList, then save to disk
void SV_UpdateStats(void)
{
UINT32 i, j;
UINT32 i, j, hash;
if (!server)
return;
@ -208,8 +214,12 @@ void SV_UpdateStats(void)
if (PR_IsKeyGuest(players[i].public_key))
continue;
hash = quickncasehash((char*)players[i].public_key, PUBKEYLENGTH);
for(j = 0; j < numtracked; j++)
{
{
if (hash != trackedList[j].hash) // Not crypto magic, just an early out with a faster comparison
continue;
if (memcmp(&trackedList[j].public_key, players[i].public_key, PUBKEYLENGTH) == 0)
{
trackedList[j].lastseen = time(NULL);

2
src/k_serverstats.h
View file

@ -34,6 +34,8 @@ struct serverplayer_t
uint8_t public_key[PUBKEYLENGTH];
time_t lastseen;
UINT16 powerlevels[PWRLV_NUMTYPES];
UINT32 hash; // Not persisted! Used for early outs during key comparisons
};
void SV_SaveStats(void);