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/*
* Copyright (C) Nginx, Inc.
* Copyright (C) Roman Arutyunyan
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
static void *ngx_http_v3_create_srv_conf(ngx_conf_t *cf);
static char *ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent,
void *child);
static void *ngx_http_v3_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_v3_merge_loc_conf(ngx_conf_t *cf, void *parent,
void *child);
static char *ngx_http_v3_push(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static ngx_command_t ngx_http_v3_commands[] = {
{ ngx_string("http3_max_table_capacity"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_SRV_CONF_OFFSET,
offsetof(ngx_http_v3_srv_conf_t, max_table_capacity),
NULL },
{ ngx_string("http3_max_blocked_streams"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
NGX_HTTP_SRV_CONF_OFFSET,
offsetof(ngx_http_v3_srv_conf_t, max_blocked_streams),
NULL },
{ ngx_string("http3_max_concurrent_pushes"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
NGX_HTTP_SRV_CONF_OFFSET,
offsetof(ngx_http_v3_srv_conf_t, max_concurrent_pushes),
NULL },
{ ngx_string("http3_max_uni_streams"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
NGX_HTTP_SRV_CONF_OFFSET,
offsetof(ngx_http_v3_srv_conf_t, max_uni_streams),
NULL },
{ ngx_string("http3_push"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_v3_push,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("http3_push_preload"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_v3_loc_conf_t, push_preload),
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_http_v3_module_ctx = {
NULL, /* preconfiguration */
NULL, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
ngx_http_v3_create_srv_conf, /* create server configuration */
ngx_http_v3_merge_srv_conf, /* merge server configuration */
ngx_http_v3_create_loc_conf, /* create location configuration */
ngx_http_v3_merge_loc_conf /* merge location configuration */
};
ngx_module_t ngx_http_v3_module = {
NGX_MODULE_V1,
&ngx_http_v3_module_ctx, /* module context */
ngx_http_v3_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static void *
ngx_http_v3_create_srv_conf(ngx_conf_t *cf)
{
ngx_http_v3_srv_conf_t *h3scf;
h3scf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v3_srv_conf_t));
if (h3scf == NULL) {
return NULL;
}
h3scf->max_table_capacity = NGX_CONF_UNSET_SIZE;
h3scf->max_blocked_streams = NGX_CONF_UNSET_UINT;
h3scf->max_concurrent_pushes = NGX_CONF_UNSET_UINT;
h3scf->max_uni_streams = NGX_CONF_UNSET_UINT;
return h3scf;
}
static char *
ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_http_v3_srv_conf_t *prev = parent;
ngx_http_v3_srv_conf_t *conf = child;
ngx_conf_merge_size_value(conf->max_table_capacity,
prev->max_table_capacity, 16384);
ngx_conf_merge_uint_value(conf->max_blocked_streams,
prev->max_blocked_streams, 16);
ngx_conf_merge_uint_value(conf->max_concurrent_pushes,
prev->max_concurrent_pushes, 10);
ngx_conf_merge_uint_value(conf->max_uni_streams,
prev->max_uni_streams, 3);
return NGX_CONF_OK;
}
static void *
ngx_http_v3_create_loc_conf(ngx_conf_t *cf)
{
ngx_http_v3_loc_conf_t *h3lcf;
h3lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v3_loc_conf_t));
if (h3lcf == NULL) {
return NULL;
}
/*
* set by ngx_pcalloc():
*
* h3lcf->pushes = NULL;
*/
h3lcf->push_preload = NGX_CONF_UNSET;
h3lcf->push = NGX_CONF_UNSET;
return h3lcf;
}
static char *
ngx_http_v3_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_http_v3_loc_conf_t *prev = parent;
ngx_http_v3_loc_conf_t *conf = child;
ngx_conf_merge_value(conf->push, prev->push, 1);
if (conf->push && conf->pushes == NULL) {
conf->pushes = prev->pushes;
}
ngx_conf_merge_value(conf->push_preload, prev->push_preload, 0);
return NGX_CONF_OK;
}
static char *
ngx_http_v3_push(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_v3_loc_conf_t *h3lcf = conf;
ngx_str_t *value;
ngx_http_complex_value_t *cv;
ngx_http_compile_complex_value_t ccv;
value = cf->args->elts;
if (ngx_strcmp(value[1].data, "off") == 0) {
if (h3lcf->pushes) {
return "\"off\" parameter cannot be used with URI";
}
if (h3lcf->push == 0) {
return "is duplicate";
}
h3lcf->push = 0;
return NGX_CONF_OK;
}
if (h3lcf->push == 0) {
return "URI cannot be used with \"off\" parameter";
}
h3lcf->push = 1;
if (h3lcf->pushes == NULL) {
h3lcf->pushes = ngx_array_create(cf->pool, 1,
sizeof(ngx_http_complex_value_t));
if (h3lcf->pushes == NULL) {
return NGX_CONF_ERROR;
}
}
cv = ngx_array_push(h3lcf->pushes);
if (cv == NULL) {
return NGX_CONF_ERROR;
}
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[1];
ccv.complex_value = cv;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
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