CLEANUP: Rename accept_encoding_hash_cmp to accept_encoding_bitmap_cmp

For the `accept-encoding` header a bitmap and not a hash is stored.
This commit is contained in:
Tim Duesterhus 2021-01-18 13:41:17 +01:00 committed by William Lallemand
parent 5897cfe18e
commit ed84d84a29

View File

@ -97,7 +97,7 @@ struct vary_hashing_information {
enum vary_header_bit value; /* Bit representing the header in a vary signature */
unsigned int hash_length; /* Size of the sub hash for this header's value */
int(*norm_fn)(struct htx*,struct ist hdr_name,char* buf,unsigned int* buf_len); /* Normalization function */
int(*cmp_fn)(const void *ref_hash, const void *new_hash, unsigned int hash_len); /* Comparison function, should return 0 if the hashes are alike */
int(*cmp_fn)(const void *ref, const void *new, unsigned int len); /* Comparison function, should return 0 if the hashes are alike */
};
static int http_request_prebuild_full_secondary_key(struct stream *s);
@ -113,12 +113,12 @@ static int accept_encoding_normalizer(struct htx *htx, struct ist hdr_name,
static int default_normalizer(struct htx *htx, struct ist hdr_name,
char *buf, unsigned int *buf_len);
static int accept_encoding_hash_cmp(const void *ref_hash, const void *new_hash, unsigned int hash_len);
static int accept_encoding_bitmap_cmp(const void *ref, const void *new, unsigned int len);
/* Warning : do not forget to update HTTP_CACHE_SEC_KEY_LEN when new items are
* added to this array. */
const struct vary_hashing_information vary_information[] = {
{ IST("accept-encoding"), VARY_ACCEPT_ENCODING, sizeof(uint32_t), &accept_encoding_normalizer, &accept_encoding_hash_cmp },
{ IST("accept-encoding"), VARY_ACCEPT_ENCODING, sizeof(uint32_t), &accept_encoding_normalizer, &accept_encoding_bitmap_cmp },
{ IST("referer"), VARY_REFERER, sizeof(int), &default_normalizer, NULL },
};
@ -2354,15 +2354,15 @@ static int default_normalizer(struct htx *htx, struct ist hdr_name,
}
/*
* Accept-Encoding sub-hash comparison function.
* Returns 0 if the hashes are alike.
* Accept-Encoding bitmap comparison function.
* Returns 0 if the bitmaps are compatible.
*/
static int accept_encoding_hash_cmp(const void *ref_hash, const void *new_hash, unsigned int hash_len)
static int accept_encoding_bitmap_cmp(const void *ref, const void *new, unsigned int len)
{
uint32_t ref = read_u32(ref_hash);
uint32_t new = read_u32(new_hash);
uint32_t ref_bitmap = read_u32(ref);
uint32_t new_bitmap = read_u32(new);
if (!(ref & VARY_ENCODING_OTHER)) {
if (!(ref_bitmap & VARY_ENCODING_OTHER)) {
/* All the bits set in the reference bitmap correspond to the
* stored response' encoding and should all be set in the new
* encoding bitmap in order for the client to be able to manage
@ -2373,7 +2373,7 @@ static int accept_encoding_hash_cmp(const void *ref_hash, const void *new_hash,
* the cache (as far as the accept-encoding part is concerned).
*/
return (ref & new) != ref;
return (ref_bitmap & new_bitmap) != ref_bitmap;
}
else {
return 1;