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add ETag to /keys response

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Christian Grothoff 2022-05-17 14:30:58 +02:00
parent b9d0b1aae4
commit 5e06f842dd
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GPG Key ID: 939E6BE1E29FC3CC
1 changed files with 24 additions and 0 deletions
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24
src/exchange/taler-exchange-httpd_keys.c
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@ -1918,6 +1918,7 @@ create_krd (struct TEH_KeyStateHandle *ksh,
void *keys_jsonz; void *keys_jsonz;
size_t keys_jsonz_size; size_t keys_jsonz_size;
int comp; int comp;
char etag[sizeof (struct GNUNET_HashCode) * 2];
/* Convert /keys response to UTF8-String */ /* Convert /keys response to UTF8-String */
keys_json = json_dumps (keys, keys_json = json_dumps (keys,
@ -1929,6 +1930,21 @@ create_krd (struct TEH_KeyStateHandle *ksh,
keys_jsonz = GNUNET_strdup (keys_json); keys_jsonz = GNUNET_strdup (keys_json);
keys_jsonz_size = strlen (keys_json); keys_jsonz_size = strlen (keys_json);
/* hash to compute etag */
{
struct GNUNET_HashCode ehash;
char *end;
GNUNET_CRYPTO_hash (keys_jsonz,
keys_jsonz_size,
&ehash);
end = GNUNET_STRINGS_data_to_string (&ehash,
sizeof (ehash),
etag,
sizeof (etag));
*end = '\0';
}
/* Create uncompressed response */ /* Create uncompressed response */
krd.response_uncompressed krd.response_uncompressed
= MHD_create_response_from_buffer (keys_jsonz_size, = MHD_create_response_from_buffer (keys_jsonz_size,
@ -1938,6 +1954,10 @@ create_krd (struct TEH_KeyStateHandle *ksh,
GNUNET_assert (GNUNET_OK == GNUNET_assert (GNUNET_OK ==
setup_general_response_headers (ksh, setup_general_response_headers (ksh,
krd.response_uncompressed)); krd.response_uncompressed));
GNUNET_break (MHD_YES ==
MHD_add_response_header (krd.response_uncompressed,
MHD_HTTP_HEADER_ETAG,
etag));
/* Also compute compressed version of /keys response */ /* Also compute compressed version of /keys response */
comp = TALER_MHD_body_compress (&keys_jsonz, comp = TALER_MHD_body_compress (&keys_jsonz,
&keys_jsonz_size); &keys_jsonz_size);
@ -1956,6 +1976,10 @@ create_krd (struct TEH_KeyStateHandle *ksh,
GNUNET_assert (GNUNET_OK == GNUNET_assert (GNUNET_OK ==
setup_general_response_headers (ksh, setup_general_response_headers (ksh,
krd.response_compressed)); krd.response_compressed));
GNUNET_break (MHD_YES ==
MHD_add_response_header (krd.response_compressed,
MHD_HTTP_HEADER_ETAG,
etag));
} }
krd.cherry_pick_date = last_cpd; krd.cherry_pick_date = last_cpd;
GNUNET_array_append (ksh->krd_array, GNUNET_array_append (ksh->krd_array,