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minimize blake2 usage for hashing

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This commit is contained in:
Vladimir Dubrovin 2026-05-04 16:48:07 +03:00
parent 2997533287
commit af8a6e0b91
3 changed files with 60 additions and 25 deletions
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13
src/hash.c
View File

@ -6,9 +6,6 @@ struct hashentry {
char value[4];
};
static uint32_t hashindex(unsigned tablesize, const uint8_t* hash){
return (*(unsigned *)hash) % tablesize;
}
void destroyhashtable(struct hashtable *ht){
@ -32,6 +29,7 @@ void destroyhashtable(struct hashtable *ht){
_3proxy_mutex_destroy(&ht->hash_mutex);
}
#define hashindex(ht, tablesize, hash) (murmurhash3(hash, ht->hash_size, ht->entropy) % tablesize)
#define hvalue(ht,I) ((struct hashentry *)(ht->hashvalues + (I-1)*(sizeof(struct hashentry) + ht->recsize - 4)))
#define hhash(ht,I) ((ht->hashhashvalues + (I-1)*(ht->hash_size)))
@ -87,6 +85,7 @@ int inithashtable(struct hashtable *ht, unsigned tablesize, unsigned poolsize, u
ht->poolsize = poolsize;
ht->tablesize = tablesize;
ht->growlimit = growlimit;
ht->entropy = myrand(ht, sizeof(struct hashtable));
memset(ht->ihashtable, 0, ht->tablesize * sizeof(uint32_t));
memset(ht->hashvalues, 0, ht->poolsize * (sizeof(struct hashentry) + ht->recsize - 4));
@ -151,7 +150,7 @@ static void hashgrow(struct hashtable *ht){
uint32_t he = ht->ihashtable[j];
while (he) {
uint32_t next = hvalue(ht, he)->inext;
unsigned idx = hashindex(newtablesize, hhash(ht, he));
unsigned idx = hashindex(ht, newtablesize, hhash(ht, he));
hvalue(ht, he)->inext = newitable[idx];
newitable[idx] = he;
he = next;
@ -180,7 +179,7 @@ void hashadd(struct hashtable *ht, void* name, void* value, time_t expires){
ht->index2hash_add(ht, name, hash);
_3proxy_mutex_lock(&ht->hash_mutex);
index = hashindex(ht->tablesize, hash);
index = hashindex(ht, ht->tablesize, hash);
for(hep = ht->ihashtable + index; (he = *hep)!=0; ){
if(hvalue(ht,he)->expires < conf.time || !memcmp(hash, hhash(ht,he), ht->hash_size)) {
@ -228,7 +227,7 @@ int hashresolv(struct hashtable *ht, void* name, void* value, uint32_t *ttl){
}
ht->index2hash_search(ht,name, hash);
_3proxy_mutex_lock(&ht->hash_mutex);
index = hashindex(ht->tablesize, hash);
index = hashindex(ht, ht->tablesize, hash);
for(hep = ht->ihashtable + index; (he = *hep)!=0; ){
if(hvalue(ht, he)->expires < conf.time) {
(*hep) = hvalue(ht,he)->inext;
@ -259,7 +258,7 @@ void hashdelete(struct hashtable *ht, void *name){
}
ht->index2hash_search(ht, name, hash);
_3proxy_mutex_lock(&ht->hash_mutex);
index = hashindex(ht->tablesize, hash);
index = hashindex(ht, ht->tablesize, hash);
for(hep = ht->ihashtable + index; (he = *hep) != 0; ){
if((hvalue(ht, he)->expires && hvalue(ht, he)->expires < conf.time) || !memcmp(hash, hhash(ht, he), ht->hash_size)) {
(*hep) = hvalue(ht, he)->inext;

71
src/hashtables.c
View File

@ -4,29 +4,64 @@
static void char_index2hash(const struct hashtable *ht, void *index, uint8_t *hash){
blake2b_state S;
int len;
blake2b_init(&S, ht->hash_size);
blake2b_update(&S, index, strlen((const char*)index) + 1);
blake2b_final(&S, hash, ht->hash_size);
len = strlen((const char*)index);
memset(hash, 0, ht->hash_size);
if(len <= ht->hash_size) memcpy(hash, index, len);
else {
blake2b_init(&S, ht->hash_size);
blake2b_update(&S, index, strlen((const char*)index) + 1);
blake2b_final(&S, hash, ht->hash_size);
}
}
static void param2hash_add(const struct hashtable *ht, void *index, uint8_t *hash){
blake2b_state S;
struct clientparam *param = (struct clientparam *)index;
unsigned type = param->srv->authcachetype;
int len = 0, oplen = 0, acllen = 0, ulen = 0, plen = 0, hlen = 0, a1len = 0, a2len = 0, a3len = 0, p1len=0, p2len = 0;
blake2b_init(&S, ht->hash_size);
if((type & 2) && param->username)blake2b_update(&S, param->username, strlen((const char *)param->username) + 1);
if((type & 4) && param->password)blake2b_update(&S, param->password, strlen((const char *)param->password) + 1);
if((type & 1) && !(type & 8))blake2b_update(&S, SAADDR(&param->sincr), SAADDRLEN(&param->sincr));
if((type & 16))blake2b_update(&S, &param->srv->acl, sizeof(param->srv->acl));
if((type & 64))blake2b_update(&S, SAADDR(&param->req), SAADDRLEN(&param->req));
if((type & 128))blake2b_update(&S, SAPORT(&param->req), 2);
if((type & 256) && param->hostname)blake2b_update(&S, param->hostname, strlen((const char *)param->hostname) + 1);
if((type & 512))blake2b_update(&S, &param->operation, sizeof(param->operation));
if((type & 1024))blake2b_update(&S, SAADDR(&param->srv->intsa), SAADDRLEN(&param->srv->intsa));
if((type & 2048))blake2b_update(&S, SAPORT(&param->srv->intsa), 2);
blake2b_final(&S, hash, ht->hash_size);
if((type & 2) && param->username) ulen = strlen((const char *)param->username) + 1;
if((type & 4) && param->password) plen = strlen((const char *)param->password) + 1;
if((type & 1) && !(type & 8)) a1len = SAADDRLEN(&param->sincr);
if((type & 16)) acllen = sizeof(param->srv->acl);
if((type & 64)) a2len = SAADDRLEN(&param->req);
if((type & 128)) p1len = 2 ;
if((type & 256) && param->hostname) hlen = strlen((const char *)param->hostname) + 1;
if((type & 512)) oplen = sizeof(param->operation);
if((type & 1024)) a3len = SAADDRLEN(&param->srv->intsa);
if((type & 2048)) p2len = 2;
memset(hash, 0, ht->hash_size);
if(ulen + plen + a1len + acllen + a2len + p1len + hlen + oplen + a3len + p2len <= ht->hash_size){
int offset = 0;
if((type & 2) && param->username){ memcpy(hash + offset, param->username, ulen); offset += ulen; }
if((type & 4) && param->password){ memcpy(hash + offset, param->password, plen); offset += plen; }
if((type & 1) && !(type & 8)){ memcpy(hash + offset, SAADDR(&param->sincr), a1len); offset += a1len; }
if((type & 16)){ memcpy(hash + offset, &param->srv->acl, acllen); offset += acllen; }
if((type & 64)){ memcpy(hash + offset, SAADDR(&param->req), a2len); offset += a2len; }
if((type & 128)){ memcpy(hash + offset, SAPORT(&param->req), p1len); offset += 2; }
if((type & 256) && param->hostname){ memcpy(hash + offset, param->hostname, hlen); offset += hlen; }
if((type & 512)){ memcpy(hash + offset, &param->operation, oplen); offset += oplen; }
if((type & 1024)){ memcpy(hash + offset, SAADDR(&param->srv->intsa), a3len); offset += a3len; }
if((type & 2048)){ memcpy(hash + offset, SAPORT(&param->srv->intsa), p2len); offset += 2; }
}
else {
blake2b_init(&S, ht->hash_size);
if((type & 2) && param->username)blake2b_update(&S, param->username, ulen);
if((type & 4) && param->password)blake2b_update(&S, param->password, plen);
if((type & 1) && !(type & 8))blake2b_update(&S, SAADDR(&param->sincr), a1len);
if((type & 16))blake2b_update(&S, &param->srv->acl, acllen);
if((type & 64))blake2b_update(&S, SAADDR(&param->req), a2len);
if((type & 128))blake2b_update(&S, SAPORT(&param->req), 2);
if((type & 256) && param->hostname)blake2b_update(&S, param->hostname, hlen);
if((type & 512))blake2b_update(&S, &param->operation, sizeof(param->operation));
if((type & 1024))blake2b_update(&S, SAADDR(&param->srv->intsa), a3len);
if((type & 2048))blake2b_update(&S, SAPORT(&param->srv->intsa), 2);
blake2b_final(&S, hash, ht->hash_size);
}
memcpy(param->hash, hash, ht->hash_size);
}
@ -99,9 +134,9 @@ static void pwnt2hash_search(const struct hashtable *ht, void *index, uint8_t *h
struct hashtable dns_table = {char_index2hash, char_index2hash, 4, 12};
struct hashtable dns6_table = {char_index2hash, char_index2hash, 16, 12};
struct hashtable auth_table = {param2hash_add, param2hash_search, sizeof(struct authcache), 12};
struct hashtable dns_table = {char_index2hash, char_index2hash, 4, 32};
struct hashtable dns6_table = {char_index2hash, char_index2hash, 16, 32};
struct hashtable auth_table = {param2hash_add, param2hash_search, sizeof(struct authcache), 64};
struct hashtable pw_table = {pw2hash_add, pw2hash_search, 0, 12};
#ifdef WITH_SSL
struct hashtable pwnt_table = {pwnt2hash_add, pwnt2hash_search, 0, 12};

1
src/structures.h
View File

@ -505,6 +505,7 @@ struct hashtable {
time_t compacted;
uint32_t ihashhashempty;
uint32_t ihashempty;
uint32_t entropy;
};
struct srvparam {