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CLEANUP: connection: Consistently use struct ist to process all TLV types

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Instead of directly poking around within the `struct tlv tlv_packet` the actual
value will be consumed using a `struct ist`.
This commit is contained in:
Tim Duesterhus 2021-03-06 20:06:51 +01:00 committed by Willy Tarreau
parent 615f81eb5a
commit 56c176a780
1 changed files with 7 additions and 11 deletions
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18
src/connection.c
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@ -447,15 +447,15 @@ int conn_recv_proxy(struct connection *conn, int flag)
/* TLV parsing */
while (tlv_offset < total_v2_len) {
struct tlv *tlv_packet;
size_t tlv_len;
struct ist tlv;
/* Verify that we have at least TLV_HEADER_SIZE bytes left */
if (tlv_offset + TLV_HEADER_SIZE > total_v2_len)
goto bad_header;
tlv_packet = (struct tlv *) &trash.area[tlv_offset];
tlv_len = get_tlv_length(tlv_packet);
tlv_offset += tlv_len + TLV_HEADER_SIZE;
tlv = ist2((const char *)tlv_packet->value, get_tlv_length(tlv_packet));
tlv_offset += istlen(tlv) + TLV_HEADER_SIZE;
/* Verify that the TLV length does not exceed the total PROXYv2 length */
if (tlv_offset > total_v2_len)
@ -466,11 +466,11 @@ int conn_recv_proxy(struct connection *conn, int flag)
uint32_t n_crc32c;
/* Verify that this TLV is exactly 4 bytes long */
if (tlv_len != 4)
if (istlen(tlv) != 4)
goto bad_header;
n_crc32c = read_n32(tlv_packet->value);
write_n32(tlv_packet->value, 0); // compute with CRC==0
n_crc32c = read_n32(istptr(tlv));
write_n32(istptr(tlv), 0); // compute with CRC==0
if (hash_crc32c(trash.area, total_v2_len) != n_crc32c)
goto bad_header;
@ -480,15 +480,13 @@ int conn_recv_proxy(struct connection *conn, int flag)
case PP2_TYPE_NETNS: {
const struct netns_entry *ns;
ns = netns_store_lookup((char*)tlv_packet->value, tlv_len);
ns = netns_store_lookup(istptr(tlv), istlen(tlv));
if (ns)
conn->proxy_netns = ns;
break;
}
#endif
case PP2_TYPE_AUTHORITY: {
const struct ist tlv = ist2((const char *)tlv_packet->value, tlv_len);
if (istlen(tlv) > PP2_AUTHORITY_MAX)
goto bad_header;
conn->proxy_authority = ist2(pool_alloc(pool_head_authority), 0);
@ -503,8 +501,6 @@ int conn_recv_proxy(struct connection *conn, int flag)
break;
}
case PP2_TYPE_UNIQUE_ID: {
const struct ist tlv = ist2((const char *)tlv_packet->value, tlv_len);
if (istlen(tlv) > UNIQUEID_LEN)
goto bad_header;
conn->proxy_unique_id = ist2(pool_alloc(pool_head_uniqueid), 0);