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b2e2ec51b3
proxy http-only options implemented in http_ext were statically stored
within proxy struct.
We're making some changes so that http_ext are now stored in a dynamically
allocated structs.
http_ext related structs are only allocated when needed to save some space
whenever possible, and they are automatically freed upon proxy deletion.
Related PX_O_HTTP{7239,XFF,XOT) option flags were removed because we're now
considering an http_ext option as 'active' if it is allocated (ptr is not NULL)
A few checks (and BUG_ON) were added to make these changes safe because
it adds some (acceptable) complexity to the previous design.
Also, proxy.http was renamed to proxy.http_ext to make things more explicit.
150 lines
4.0 KiB
C
150 lines
4.0 KiB
C
/*
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* include/haproxy/http_ext-t.h
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* Version-agnostic and implementation-agnostic HTTP extensions definitions
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*
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* Copyright 2022 HAProxy Technologies
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _HAPROXY_HTTPEXT_T_H
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#define _HAPROXY_HTTPEXT_T_H
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#include <arpa/inet.h>
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#include <import/ist.h>
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#include <haproxy/tools-t.h>
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enum forwarded_header_attribute_type {
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FORWARDED_HEADER_UNK = 0,
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FORWARDED_HEADER_OBFS = 1,
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FORWARDED_HEADER_PORT = 2,
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FORWARDED_HEADER_IP = 3,
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};
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struct forwarded_header_nodename {
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union {
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struct sockaddr_storage ip;
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struct ist obfs;
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};
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enum forwarded_header_attribute_type type;
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};
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struct forwarded_header_nodeport {
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union {
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uint16_t port;
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struct ist obfs;
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};
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enum forwarded_header_attribute_type type;
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};
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struct forwarded_header_node {
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struct forwarded_header_nodename nodename;
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struct forwarded_header_nodeport nodeport;
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struct ist raw;
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};
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enum forwarded_header_proto {
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FORWARDED_HEADER_HTTP = 1,
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FORWARDED_HEADER_HTTPS = 2
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};
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struct forwarded_header_ctx {
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struct forwarded_header_node nfor;
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struct forwarded_header_node nby;
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struct ist host;
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enum forwarded_header_proto proto;
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};
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enum http_ext_7239_forby_mode {
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HTTP_7239_FORBY_ORIG = 1,
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HTTP_7239_FORBY_SMP = 2
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};
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struct http_ext_7239_forby {
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/* nn = nodename, np = nodeport */
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union {
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char *nn_expr_s;
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struct sample_expr *nn_expr;
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};
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union {
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char *np_expr_s;
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struct sample_expr *np_expr;
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};
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enum http_ext_7239_forby_mode nn_mode;
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enum http_ext_7239_forby_mode np_mode;
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};
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enum http_ext_7239_host_mode {
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HTTP_7239_HOST_ORIG = 1,
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HTTP_7239_HOST_SMP = 2
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};
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struct http_ext_7239_host {
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union {
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char *expr_s;
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struct sample_expr *expr;
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};
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enum http_ext_7239_host_mode mode;
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};
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struct http_ext_7239 {
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/* forwarded header parameters options */
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struct http_ext_7239_forby p_for;
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struct http_ext_7239_forby p_by;
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struct http_ext_7239_host p_host;
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uint8_t p_proto;
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/* config error hints, used only during configuration parsing */
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char *c_file;
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int c_line;
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int c_mode; /* 0: parsed, 1: compiled */
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};
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enum forwarded_header_field {
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FORWARDED_HEADER_FOR = 0x01,
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FORWARDED_HEADER_BY = 0x02,
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FORWARDED_HEADER_HOST = 0x04,
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FORWARDED_HEADER_PROTO = 0x08,
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FORWARDED_HEADER_ALL = FORWARDED_HEADER_FOR|FORWARDED_HEADER_BY|FORWARDED_HEADER_HOST|FORWARDED_HEADER_PROTO
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};
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enum http_ext_xff_mode {
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HTTP_XFF_IFNONE = 0, /* set if not already set */
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HTTP_XFF_ALWAYS = 1 /* always set x-forwarded-for */
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};
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struct http_ext_xff {
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struct ist hdr_name; /* header to use - default: "x-forwarded-for" */
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struct net_addr except_net; /* don't forward x-forward-for for this address. */
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uint8_t mode;
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};
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struct http_ext_xot {
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struct ist hdr_name; /* header to use - default: "x-original-to" */
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struct net_addr except_net; /* don't forward x-original-to for this address. */
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};
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/* http_ext options */
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struct http_ext {
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/* forwarded header (RFC 7239) */
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struct http_ext_7239 *fwd;
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/* x-forward-for:
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* conditionally insert x-forwarded-for with client address
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*/
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struct http_ext_xff *xff;
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/* x-original-to:
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* insert x-original-to with destination address
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*/
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struct http_ext_xot *xot;
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};
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#endif /* !_HAPROXY_HTTPEXT_T_H */
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