| |
| /* |
| * Copyright (C) Nginx, Inc. |
| * Copyright (C) Valentin V. Bartenev |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_http.h> |
| #include <ngx_http_v2_module.h> |
| |
| |
| static ngx_int_t ngx_http_v2_add_variables(ngx_conf_t *cf); |
| |
| static ngx_int_t ngx_http_v2_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| |
| static ngx_int_t ngx_http_v2_module_init(ngx_cycle_t *cycle); |
| |
| static void *ngx_http_v2_create_main_conf(ngx_conf_t *cf); |
| static char *ngx_http_v2_init_main_conf(ngx_conf_t *cf, void *conf); |
| static void *ngx_http_v2_create_srv_conf(ngx_conf_t *cf); |
| static char *ngx_http_v2_merge_srv_conf(ngx_conf_t *cf, void *parent, |
| void *child); |
| static void *ngx_http_v2_create_loc_conf(ngx_conf_t *cf); |
| static char *ngx_http_v2_merge_loc_conf(ngx_conf_t *cf, void *parent, |
| void *child); |
| |
| static char *ngx_http_v2_push(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
| |
| static char *ngx_http_v2_recv_buffer_size(ngx_conf_t *cf, void *post, |
| void *data); |
| static char *ngx_http_v2_pool_size(ngx_conf_t *cf, void *post, void *data); |
| static char *ngx_http_v2_preread_size(ngx_conf_t *cf, void *post, void *data); |
| static char *ngx_http_v2_streams_index_mask(ngx_conf_t *cf, void *post, |
| void *data); |
| static char *ngx_http_v2_chunk_size(ngx_conf_t *cf, void *post, void *data); |
| static char *ngx_http_v2_obsolete(ngx_conf_t *cf, ngx_command_t *cmd, |
| void *conf); |
| |
| |
| static ngx_conf_deprecated_t ngx_http_v2_recv_timeout_deprecated = { |
| ngx_conf_deprecated, "http2_recv_timeout", "client_header_timeout" |
| }; |
| |
| static ngx_conf_deprecated_t ngx_http_v2_idle_timeout_deprecated = { |
| ngx_conf_deprecated, "http2_idle_timeout", "keepalive_timeout" |
| }; |
| |
| static ngx_conf_deprecated_t ngx_http_v2_max_requests_deprecated = { |
| ngx_conf_deprecated, "http2_max_requests", "keepalive_requests" |
| }; |
| |
| static ngx_conf_deprecated_t ngx_http_v2_max_field_size_deprecated = { |
| ngx_conf_deprecated, "http2_max_field_size", "large_client_header_buffers" |
| }; |
| |
| static ngx_conf_deprecated_t ngx_http_v2_max_header_size_deprecated = { |
| ngx_conf_deprecated, "http2_max_header_size", "large_client_header_buffers" |
| }; |
| |
| |
| static ngx_conf_post_t ngx_http_v2_recv_buffer_size_post = |
| { ngx_http_v2_recv_buffer_size }; |
| static ngx_conf_post_t ngx_http_v2_pool_size_post = |
| { ngx_http_v2_pool_size }; |
| static ngx_conf_post_t ngx_http_v2_preread_size_post = |
| { ngx_http_v2_preread_size }; |
| static ngx_conf_post_t ngx_http_v2_streams_index_mask_post = |
| { ngx_http_v2_streams_index_mask }; |
| static ngx_conf_post_t ngx_http_v2_chunk_size_post = |
| { ngx_http_v2_chunk_size }; |
| |
| |
| static ngx_command_t ngx_http_v2_commands[] = { |
| |
| { ngx_string("http2_recv_buffer_size"), |
| NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_size_slot, |
| NGX_HTTP_MAIN_CONF_OFFSET, |
| offsetof(ngx_http_v2_main_conf_t, recv_buffer_size), |
| &ngx_http_v2_recv_buffer_size_post }, |
| |
| { ngx_string("http2_pool_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_size_slot, |
| NGX_HTTP_SRV_CONF_OFFSET, |
| offsetof(ngx_http_v2_srv_conf_t, pool_size), |
| &ngx_http_v2_pool_size_post }, |
| |
| { ngx_string("http2_max_concurrent_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_v2_srv_conf_t, concurrent_streams), |
| NULL }, |
| |
| { ngx_string("http2_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_v2_srv_conf_t, concurrent_pushes), |
| NULL }, |
| |
| { ngx_string("http2_max_requests"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_http_v2_obsolete, |
| 0, |
| 0, |
| &ngx_http_v2_max_requests_deprecated }, |
| |
| { ngx_string("http2_max_field_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_http_v2_obsolete, |
| 0, |
| 0, |
| &ngx_http_v2_max_field_size_deprecated }, |
| |
| { ngx_string("http2_max_header_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_http_v2_obsolete, |
| 0, |
| 0, |
| &ngx_http_v2_max_header_size_deprecated }, |
| |
| { ngx_string("http2_body_preread_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_size_slot, |
| NGX_HTTP_SRV_CONF_OFFSET, |
| offsetof(ngx_http_v2_srv_conf_t, preread_size), |
| &ngx_http_v2_preread_size_post }, |
| |
| { ngx_string("http2_streams_index_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_num_slot, |
| NGX_HTTP_SRV_CONF_OFFSET, |
| offsetof(ngx_http_v2_srv_conf_t, streams_index_mask), |
| &ngx_http_v2_streams_index_mask_post }, |
| |
| { ngx_string("http2_recv_timeout"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_http_v2_obsolete, |
| 0, |
| 0, |
| &ngx_http_v2_recv_timeout_deprecated }, |
| |
| { ngx_string("http2_idle_timeout"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_http_v2_obsolete, |
| 0, |
| 0, |
| &ngx_http_v2_idle_timeout_deprecated }, |
| |
| { ngx_string("http2_chunk_size"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_size_slot, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| offsetof(ngx_http_v2_loc_conf_t, chunk_size), |
| &ngx_http_v2_chunk_size_post }, |
| |
| { ngx_string("http2_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_v2_loc_conf_t, push_preload), |
| NULL }, |
| |
| { ngx_string("http2_push"), |
| NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| ngx_http_v2_push, |
| NGX_HTTP_LOC_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| ngx_null_command |
| }; |
| |
| |
| static ngx_http_module_t ngx_http_v2_module_ctx = { |
| ngx_http_v2_add_variables, /* preconfiguration */ |
| NULL, /* postconfiguration */ |
| |
| ngx_http_v2_create_main_conf, /* create main configuration */ |
| ngx_http_v2_init_main_conf, /* init main configuration */ |
| |
| ngx_http_v2_create_srv_conf, /* create server configuration */ |
| ngx_http_v2_merge_srv_conf, /* merge server configuration */ |
| |
| ngx_http_v2_create_loc_conf, /* create location configuration */ |
| ngx_http_v2_merge_loc_conf /* merge location configuration */ |
| }; |
| |
| |
| ngx_module_t ngx_http_v2_module = { |
| NGX_MODULE_V1, |
| &ngx_http_v2_module_ctx, /* module context */ |
| ngx_http_v2_commands, /* module directives */ |
| NGX_HTTP_MODULE, /* module type */ |
| NULL, /* init master */ |
| ngx_http_v2_module_init, /* init module */ |
| NULL, /* init process */ |
| NULL, /* init thread */ |
| NULL, /* exit thread */ |
| NULL, /* exit process */ |
| NULL, /* exit master */ |
| NGX_MODULE_V1_PADDING |
| }; |
| |
| |
| static ngx_http_variable_t ngx_http_v2_vars[] = { |
| |
| { ngx_string("http2"), NULL, |
| ngx_http_v2_variable, 0, 0, 0 }, |
| |
| ngx_http_null_variable |
| }; |
| |
| |
| static ngx_int_t |
| ngx_http_v2_add_variables(ngx_conf_t *cf) |
| { |
| ngx_http_variable_t *var, *v; |
| |
| for (v = ngx_http_v2_vars; v->name.len; v++) { |
| var = ngx_http_add_variable(cf, &v->name, v->flags); |
| if (var == NULL) { |
| return NGX_ERROR; |
| } |
| |
| var->get_handler = v->get_handler; |
| var->data = v->data; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_v2_variable(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| |
| if (r->stream) { |
| #if (NGX_HTTP_SSL) |
| |
| if (r->connection->ssl) { |
| v->len = sizeof("h2") - 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) "h2"; |
| |
| return NGX_OK; |
| } |
| |
| #endif |
| v->len = sizeof("h2c") - 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) "h2c"; |
| |
| return NGX_OK; |
| } |
| |
| *v = ngx_http_variable_null_value; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_v2_module_init(ngx_cycle_t *cycle) |
| { |
| return NGX_OK; |
| } |
| |
| |
| static void * |
| ngx_http_v2_create_main_conf(ngx_conf_t *cf) |
| { |
| ngx_http_v2_main_conf_t *h2mcf; |
| |
| h2mcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v2_main_conf_t)); |
| if (h2mcf == NULL) { |
| return NULL; |
| } |
| |
| h2mcf->recv_buffer_size = NGX_CONF_UNSET_SIZE; |
| |
| return h2mcf; |
| } |
| |
| |
| static char * |
| ngx_http_v2_init_main_conf(ngx_conf_t *cf, void *conf) |
| { |
| ngx_http_v2_main_conf_t *h2mcf = conf; |
| |
| ngx_conf_init_size_value(h2mcf->recv_buffer_size, 256 * 1024); |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static void * |
| ngx_http_v2_create_srv_conf(ngx_conf_t *cf) |
| { |
| ngx_http_v2_srv_conf_t *h2scf; |
| |
| h2scf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v2_srv_conf_t)); |
| if (h2scf == NULL) { |
| return NULL; |
| } |
| |
| h2scf->pool_size = NGX_CONF_UNSET_SIZE; |
| |
| h2scf->concurrent_streams = NGX_CONF_UNSET_UINT; |
| h2scf->concurrent_pushes = NGX_CONF_UNSET_UINT; |
| |
| h2scf->preread_size = NGX_CONF_UNSET_SIZE; |
| |
| h2scf->streams_index_mask = NGX_CONF_UNSET_UINT; |
| |
| return h2scf; |
| } |
| |
| |
| static char * |
| ngx_http_v2_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
| { |
| ngx_http_v2_srv_conf_t *prev = parent; |
| ngx_http_v2_srv_conf_t *conf = child; |
| |
| ngx_conf_merge_size_value(conf->pool_size, prev->pool_size, 4096); |
| |
| ngx_conf_merge_uint_value(conf->concurrent_streams, |
| prev->concurrent_streams, 128); |
| ngx_conf_merge_uint_value(conf->concurrent_pushes, |
| prev->concurrent_pushes, 10); |
| |
| ngx_conf_merge_size_value(conf->preread_size, prev->preread_size, 65536); |
| |
| ngx_conf_merge_uint_value(conf->streams_index_mask, |
| prev->streams_index_mask, 32 - 1); |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static void * |
| ngx_http_v2_create_loc_conf(ngx_conf_t *cf) |
| { |
| ngx_http_v2_loc_conf_t *h2lcf; |
| |
| h2lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v2_loc_conf_t)); |
| if (h2lcf == NULL) { |
| return NULL; |
| } |
| |
| /* |
| * set by ngx_pcalloc(): |
| * |
| * h2lcf->pushes = NULL; |
| */ |
| |
| h2lcf->chunk_size = NGX_CONF_UNSET_SIZE; |
| |
| h2lcf->push_preload = NGX_CONF_UNSET; |
| h2lcf->push = NGX_CONF_UNSET; |
| |
| return h2lcf; |
| } |
| |
| |
| static char * |
| ngx_http_v2_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) |
| { |
| ngx_http_v2_loc_conf_t *prev = parent; |
| ngx_http_v2_loc_conf_t *conf = child; |
| |
| ngx_conf_merge_size_value(conf->chunk_size, prev->chunk_size, 8 * 1024); |
| |
| 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_v2_push(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| ngx_http_v2_loc_conf_t *h2lcf = 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 (h2lcf->pushes) { |
| return "\"off\" parameter cannot be used with URI"; |
| } |
| |
| if (h2lcf->push == 0) { |
| return "is duplicate"; |
| } |
| |
| h2lcf->push = 0; |
| return NGX_CONF_OK; |
| } |
| |
| if (h2lcf->push == 0) { |
| return "URI cannot be used with \"off\" parameter"; |
| } |
| |
| h2lcf->push = 1; |
| |
| if (h2lcf->pushes == NULL) { |
| h2lcf->pushes = ngx_array_create(cf->pool, 1, |
| sizeof(ngx_http_complex_value_t)); |
| if (h2lcf->pushes == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| } |
| |
| cv = ngx_array_push(h2lcf->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; |
| } |
| |
| |
| static char * |
| ngx_http_v2_recv_buffer_size(ngx_conf_t *cf, void *post, void *data) |
| { |
| size_t *sp = data; |
| |
| if (*sp <= 2 * NGX_HTTP_V2_STATE_BUFFER_SIZE) { |
| return "value is too small"; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_http_v2_pool_size(ngx_conf_t *cf, void *post, void *data) |
| { |
| size_t *sp = data; |
| |
| if (*sp < NGX_MIN_POOL_SIZE) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the pool size must be no less than %uz", |
| NGX_MIN_POOL_SIZE); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| if (*sp % NGX_POOL_ALIGNMENT) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the pool size must be a multiple of %uz", |
| NGX_POOL_ALIGNMENT); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_http_v2_preread_size(ngx_conf_t *cf, void *post, void *data) |
| { |
| size_t *sp = data; |
| |
| if (*sp > NGX_HTTP_V2_MAX_WINDOW) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the maximum body preread buffer size is %uz", |
| NGX_HTTP_V2_MAX_WINDOW); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_http_v2_streams_index_mask(ngx_conf_t *cf, void *post, void *data) |
| { |
| ngx_uint_t *np = data; |
| |
| ngx_uint_t mask; |
| |
| mask = *np - 1; |
| |
| if (*np == 0 || (*np & mask)) { |
| return "must be a power of two"; |
| } |
| |
| *np = mask; |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_http_v2_chunk_size(ngx_conf_t *cf, void *post, void *data) |
| { |
| size_t *sp = data; |
| |
| if (*sp == 0) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the http2 chunk size cannot be zero"); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| if (*sp > NGX_HTTP_V2_MAX_FRAME_SIZE) { |
| *sp = NGX_HTTP_V2_MAX_FRAME_SIZE; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_http_v2_obsolete(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| ngx_conf_deprecated_t *d = cmd->post; |
| |
| ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
| "the \"%s\" directive is obsolete, " |
| "use the \"%s\" directive instead", |
| d->old_name, d->new_name); |
| |
| return NGX_CONF_OK; |
| } |
