Mercurial > hg > nginx-quic
view src/http/v3/ngx_http_v3_tables.c @ 8606:062080651d50 quic
Changed the OpenSSL QUIC support detection.
As was changed in 253cf267f95a.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Thu, 09 Sep 2021 15:34:00 +0300 |
parents | 0ac25efb2da3 |
children | 925572184d4a |
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/* * Copyright (C) Roman Arutyunyan * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> #define ngx_http_v3_table_entry_size(n, v) ((n)->len + (v)->len + 32) static ngx_int_t ngx_http_v3_evict(ngx_connection_t *c, size_t need); static void ngx_http_v3_unblock(void *data); static ngx_int_t ngx_http_v3_new_entry(ngx_connection_t *c); typedef struct { ngx_queue_t queue; ngx_connection_t *connection; ngx_uint_t *nblocked; } ngx_http_v3_block_t; static ngx_http_v3_field_t ngx_http_v3_static_table[] = { { ngx_string(":authority"), ngx_string("") }, { ngx_string(":path"), ngx_string("/") }, { ngx_string("age"), ngx_string("0") }, { ngx_string("content-disposition"), ngx_string("") }, { ngx_string("content-length"), ngx_string("0") }, { ngx_string("cookie"), ngx_string("") }, { ngx_string("date"), ngx_string("") }, { ngx_string("etag"), ngx_string("") }, { ngx_string("if-modified-since"), ngx_string("") }, { ngx_string("if-none-match"), ngx_string("") }, { ngx_string("last-modified"), ngx_string("") }, { ngx_string("link"), ngx_string("") }, { ngx_string("location"), ngx_string("") }, { ngx_string("referer"), ngx_string("") }, { ngx_string("set-cookie"), ngx_string("") }, { ngx_string(":method"), ngx_string("CONNECT") }, { ngx_string(":method"), ngx_string("DELETE") }, { ngx_string(":method"), ngx_string("GET") }, { ngx_string(":method"), ngx_string("HEAD") }, { ngx_string(":method"), ngx_string("OPTIONS") }, { ngx_string(":method"), ngx_string("POST") }, { ngx_string(":method"), ngx_string("PUT") }, { ngx_string(":scheme"), ngx_string("http") }, { ngx_string(":scheme"), ngx_string("https") }, { ngx_string(":status"), ngx_string("103") }, { ngx_string(":status"), ngx_string("200") }, { ngx_string(":status"), ngx_string("304") }, { ngx_string(":status"), ngx_string("404") }, { ngx_string(":status"), ngx_string("503") }, { ngx_string("accept"), ngx_string("*/*") }, { ngx_string("accept"), ngx_string("application/dns-message") }, { ngx_string("accept-encoding"), ngx_string("gzip, deflate, br") }, { ngx_string("accept-ranges"), ngx_string("bytes") }, { ngx_string("access-control-allow-headers"), ngx_string("cache-control") }, { ngx_string("access-control-allow-headers"), ngx_string("content-type") }, { ngx_string("access-control-allow-origin"), ngx_string("*") }, { ngx_string("cache-control"), ngx_string("max-age=0") }, { ngx_string("cache-control"), ngx_string("max-age=2592000") }, { ngx_string("cache-control"), ngx_string("max-age=604800") }, { ngx_string("cache-control"), ngx_string("no-cache") }, { ngx_string("cache-control"), ngx_string("no-store") }, { ngx_string("cache-control"), ngx_string("public, max-age=31536000") }, { ngx_string("content-encoding"), ngx_string("br") }, { ngx_string("content-encoding"), ngx_string("gzip") }, { ngx_string("content-type"), ngx_string("application/dns-message") }, { ngx_string("content-type"), ngx_string("application/javascript") }, { ngx_string("content-type"), ngx_string("application/json") }, { ngx_string("content-type"), ngx_string("application/x-www-form-urlencoded") }, { ngx_string("content-type"), ngx_string("image/gif") }, { ngx_string("content-type"), ngx_string("image/jpeg") }, { ngx_string("content-type"), ngx_string("image/png") }, { ngx_string("content-type"), ngx_string("text/css") }, { ngx_string("content-type"), ngx_string("text/html;charset=utf-8") }, { ngx_string("content-type"), ngx_string("text/plain") }, { ngx_string("content-type"), ngx_string("text/plain;charset=utf-8") }, { ngx_string("range"), ngx_string("bytes=0-") }, { ngx_string("strict-transport-security"), ngx_string("max-age=31536000") }, { ngx_string("strict-transport-security"), ngx_string("max-age=31536000;includesubdomains") }, { ngx_string("strict-transport-security"), ngx_string("max-age=31536000;includesubdomains;preload") }, { ngx_string("vary"), ngx_string("accept-encoding") }, { ngx_string("vary"), ngx_string("origin") }, { ngx_string("x-content-type-options"), ngx_string("nosniff") }, { ngx_string("x-xss-protection"), ngx_string("1;mode=block") }, { ngx_string(":status"), ngx_string("100") }, { ngx_string(":status"), ngx_string("204") }, { ngx_string(":status"), ngx_string("206") }, { ngx_string(":status"), ngx_string("302") }, { ngx_string(":status"), ngx_string("400") }, { ngx_string(":status"), ngx_string("403") }, { ngx_string(":status"), ngx_string("421") }, { ngx_string(":status"), ngx_string("425") }, { ngx_string(":status"), ngx_string("500") }, { ngx_string("accept-language"), ngx_string("") }, { ngx_string("access-control-allow-credentials"), ngx_string("FALSE") }, { ngx_string("access-control-allow-credentials"), ngx_string("TRUE") }, { ngx_string("access-control-allow-headers"), ngx_string("*") }, { ngx_string("access-control-allow-methods"), ngx_string("get") }, { ngx_string("access-control-allow-methods"), ngx_string("get, post, options") }, { ngx_string("access-control-allow-methods"), ngx_string("options") }, { ngx_string("access-control-expose-headers"), ngx_string("content-length") }, { ngx_string("access-control-request-headers"), ngx_string("content-type") }, { ngx_string("access-control-request-method"), ngx_string("get") }, { ngx_string("access-control-request-method"), ngx_string("post") }, { ngx_string("alt-svc"), ngx_string("clear") }, { ngx_string("authorization"), ngx_string("") }, { ngx_string("content-security-policy"), ngx_string("script-src 'none';object-src 'none';base-uri 'none'") }, { ngx_string("early-data"), ngx_string("1") }, { ngx_string("expect-ct"), ngx_string("") }, { ngx_string("forwarded"), ngx_string("") }, { ngx_string("if-range"), ngx_string("") }, { ngx_string("origin"), ngx_string("") }, { ngx_string("purpose"), ngx_string("prefetch") }, { ngx_string("server"), ngx_string("") }, { ngx_string("timing-allow-origin"), ngx_string("*") }, { ngx_string("upgrade-insecure-requests"), ngx_string("1") }, { ngx_string("user-agent"), ngx_string("") }, { ngx_string("x-forwarded-for"), ngx_string("") }, { ngx_string("x-frame-options"), ngx_string("deny") }, { ngx_string("x-frame-options"), ngx_string("sameorigin") } }; ngx_int_t ngx_http_v3_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic, ngx_uint_t index, ngx_str_t *value) { ngx_str_t name; ngx_http_v3_session_t *h3c; ngx_http_v3_dynamic_table_t *dt; if (dynamic) { ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 ref insert dynamic[%ui] \"%V\"", index, value); h3c = ngx_http_v3_get_session(c); dt = &h3c->table; if (dt->base + dt->nelts <= index) { return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; } index = dt->base + dt->nelts - 1 - index; if (ngx_http_v3_lookup(c, index, &name, NULL) != NGX_OK) { return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; } } else { ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 ref insert static[%ui] \"%V\"", index, value); if (ngx_http_v3_lookup_static(c, index, &name, NULL) != NGX_OK) { return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; } } return ngx_http_v3_insert(c, &name, value); } ngx_int_t ngx_http_v3_insert(ngx_connection_t *c, ngx_str_t *name, ngx_str_t *value) { u_char *p; size_t size; ngx_http_v3_field_t *field; ngx_http_v3_session_t *h3c; ngx_http_v3_dynamic_table_t *dt; size = ngx_http_v3_table_entry_size(name, value); if (ngx_http_v3_evict(c, size) != NGX_OK) { return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; } h3c = ngx_http_v3_get_session(c); dt = &h3c->table; ngx_log_debug4(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 insert [%ui] \"%V\":\"%V\", size:%uz", dt->base + dt->nelts, name, value, size); p = ngx_alloc(sizeof(ngx_http_v3_field_t) + name->len + value->len, c->log); if (p == NULL) { return NGX_ERROR; } field = (ngx_http_v3_field_t *) p; field->name.data = p + sizeof(ngx_http_v3_field_t); field->name.len = name->len; field->value.data = ngx_cpymem(field->name.data, name->data, name->len); field->value.len = value->len; ngx_memcpy(field->value.data, value->data, value->len); dt->elts[dt->nelts++] = field; dt->size += size; /* TODO increment can be sent less often */ if (ngx_http_v3_send_inc_insert_count(c, 1) != NGX_OK) { return NGX_ERROR; } if (ngx_http_v3_new_entry(c) != NGX_OK) { return NGX_ERROR; } return NGX_OK; } ngx_int_t ngx_http_v3_set_capacity(ngx_connection_t *c, ngx_uint_t capacity) { ngx_uint_t max, prev_max; ngx_http_v3_field_t **elts; ngx_http_v3_session_t *h3c; ngx_http_v3_srv_conf_t *h3scf; ngx_http_v3_dynamic_table_t *dt; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 set capacity %ui", capacity); h3c = ngx_http_v3_get_session(c); h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module); if (capacity > h3scf->max_table_capacity) { ngx_log_error(NGX_LOG_INFO, c->log, 0, "client exceeded http3_max_table_capacity limit"); return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; } dt = &h3c->table; if (dt->size > capacity) { if (ngx_http_v3_evict(c, dt->size - capacity) != NGX_OK) { return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; } } max = capacity / 32; prev_max = dt->capacity / 32; if (max > prev_max) { elts = ngx_alloc(max * sizeof(void *), c->log); if (elts == NULL) { return NGX_ERROR; } if (dt->elts) { ngx_memcpy(elts, dt->elts, dt->nelts * sizeof(void *)); ngx_free(dt->elts); } dt->elts = elts; } dt->capacity = capacity; return NGX_OK; } void ngx_http_v3_cleanup_table(ngx_http_v3_session_t *h3c) { ngx_uint_t n; ngx_http_v3_dynamic_table_t *dt; dt = &h3c->table; if (dt->elts == NULL) { return; } for (n = 0; n < dt->nelts; n++) { ngx_free(dt->elts[n]); } ngx_free(dt->elts); } static ngx_int_t ngx_http_v3_evict(ngx_connection_t *c, size_t need) { size_t size, target; ngx_uint_t n; ngx_http_v3_field_t *field; ngx_http_v3_session_t *h3c; ngx_http_v3_dynamic_table_t *dt; h3c = ngx_http_v3_get_session(c); dt = &h3c->table; if (need > dt->capacity) { ngx_log_error(NGX_LOG_ERR, c->log, 0, "not enough dynamic table capacity"); return NGX_ERROR; } target = dt->capacity - need; n = 0; while (dt->size > target) { field = dt->elts[n++]; size = ngx_http_v3_table_entry_size(&field->name, &field->value); ngx_log_debug4(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 evict [%ui] \"%V\":\"%V\" size:%uz", dt->base, &field->name, &field->value, size); ngx_free(field); dt->size -= size; } if (n) { dt->nelts -= n; dt->base += n; ngx_memmove(dt->elts, &dt->elts[n], dt->nelts * sizeof(void *)); } return NGX_OK; } ngx_int_t ngx_http_v3_duplicate(ngx_connection_t *c, ngx_uint_t index) { ngx_str_t name, value; ngx_http_v3_session_t *h3c; ngx_http_v3_dynamic_table_t *dt; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 duplicate %ui", index); h3c = ngx_http_v3_get_session(c); dt = &h3c->table; if (dt->base + dt->nelts <= index) { return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; } index = dt->base + dt->nelts - 1 - index; if (ngx_http_v3_lookup(c, index, &name, &value) != NGX_OK) { return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; } return ngx_http_v3_insert(c, &name, &value); } ngx_int_t ngx_http_v3_ack_section(ngx_connection_t *c, ngx_uint_t stream_id) { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 ack section %ui", stream_id); /* we do not use dynamic tables */ return NGX_HTTP_V3_ERR_DECODER_STREAM_ERROR; } ngx_int_t ngx_http_v3_inc_insert_count(ngx_connection_t *c, ngx_uint_t inc) { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 increment insert count %ui", inc); /* we do not use dynamic tables */ return NGX_HTTP_V3_ERR_DECODER_STREAM_ERROR; } ngx_int_t ngx_http_v3_lookup_static(ngx_connection_t *c, ngx_uint_t index, ngx_str_t *name, ngx_str_t *value) { ngx_uint_t nelts; ngx_http_v3_field_t *field; nelts = sizeof(ngx_http_v3_static_table) / sizeof(ngx_http_v3_static_table[0]); if (index >= nelts) { ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 static[%ui] lookup out of bounds: %ui", index, nelts); return NGX_ERROR; } field = &ngx_http_v3_static_table[index]; ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 static[%ui] lookup \"%V\":\"%V\"", index, &field->name, &field->value); if (name) { *name = field->name; } if (value) { *value = field->value; } return NGX_OK; } ngx_int_t ngx_http_v3_lookup(ngx_connection_t *c, ngx_uint_t index, ngx_str_t *name, ngx_str_t *value) { ngx_http_v3_field_t *field; ngx_http_v3_session_t *h3c; ngx_http_v3_dynamic_table_t *dt; h3c = ngx_http_v3_get_session(c); dt = &h3c->table; if (index < dt->base || index - dt->base >= dt->nelts) { ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 dynamic[%ui] lookup out of bounds: [%ui,%ui]", index, dt->base, dt->base + dt->nelts); return NGX_ERROR; } field = dt->elts[index - dt->base]; ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 dynamic[%ui] lookup \"%V\":\"%V\"", index, &field->name, &field->value); if (name) { *name = field->name; } if (value) { *value = field->value; } return NGX_OK; } ngx_int_t ngx_http_v3_decode_insert_count(ngx_connection_t *c, ngx_uint_t *insert_count) { ngx_uint_t max_entries, full_range, max_value, max_wrapped, req_insert_count; ngx_http_v3_srv_conf_t *h3scf; ngx_http_v3_session_t *h3c; ngx_http_v3_dynamic_table_t *dt; /* QPACK 4.5.1.1. Required Insert Count */ if (*insert_count == 0) { return NGX_OK; } h3c = ngx_http_v3_get_session(c); dt = &h3c->table; h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module); max_entries = h3scf->max_table_capacity / 32; full_range = 2 * max_entries; if (*insert_count > full_range) { return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED; } max_value = dt->base + dt->nelts + max_entries; max_wrapped = (max_value / full_range) * full_range; req_insert_count = max_wrapped + *insert_count - 1; if (req_insert_count > max_value) { if (req_insert_count <= full_range) { return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED; } req_insert_count -= full_range; } if (req_insert_count == 0) { return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED; } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 decode insert_count %ui -> %ui", *insert_count, req_insert_count); *insert_count = req_insert_count; return NGX_OK; } ngx_int_t ngx_http_v3_check_insert_count(ngx_connection_t *c, ngx_uint_t insert_count) { size_t n; ngx_pool_cleanup_t *cln; ngx_http_v3_block_t *block; ngx_http_v3_session_t *h3c; ngx_http_v3_srv_conf_t *h3scf; ngx_http_v3_dynamic_table_t *dt; h3c = ngx_http_v3_get_session(c); dt = &h3c->table; n = dt->base + dt->nelts; ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 check insert count req:%ui, have:%ui", insert_count, n); if (n >= insert_count) { return NGX_OK; } ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 block stream"); block = NULL; for (cln = c->pool->cleanup; cln; cln = cln->next) { if (cln->handler == ngx_http_v3_unblock) { block = cln->data; break; } } if (block == NULL) { cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_v3_block_t)); if (cln == NULL) { return NGX_ERROR; } cln->handler = ngx_http_v3_unblock; block = cln->data; block->queue.prev = NULL; block->connection = c; block->nblocked = &h3c->nblocked; } if (block->queue.prev == NULL) { h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module); if (h3c->nblocked == h3scf->max_blocked_streams) { ngx_log_error(NGX_LOG_INFO, c->log, 0, "client exceeded http3_max_blocked_streams limit"); return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED; } h3c->nblocked++; ngx_queue_insert_tail(&h3c->blocked, &block->queue); } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 blocked:%ui", h3c->nblocked); return NGX_BUSY; } static void ngx_http_v3_unblock(void *data) { ngx_http_v3_block_t *block = data; if (block->queue.prev) { ngx_queue_remove(&block->queue); block->queue.prev = NULL; (*block->nblocked)--; } } static ngx_int_t ngx_http_v3_new_entry(ngx_connection_t *c) { ngx_queue_t *q; ngx_connection_t *bc; ngx_http_v3_block_t *block; ngx_http_v3_session_t *h3c; h3c = ngx_http_v3_get_session(c); ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 new dynamic entry, blocked:%ui", h3c->nblocked); while (!ngx_queue_empty(&h3c->blocked)) { q = ngx_queue_head(&h3c->blocked); block = (ngx_http_v3_block_t *) q; bc = block->connection; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, bc->log, 0, "http3 unblock stream"); ngx_http_v3_unblock(block); ngx_post_event(bc->read, &ngx_posted_events); } return NGX_OK; } ngx_int_t ngx_http_v3_set_param(ngx_connection_t *c, uint64_t id, uint64_t value) { switch (id) { case NGX_HTTP_V3_PARAM_MAX_TABLE_CAPACITY: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 param QPACK_MAX_TABLE_CAPACITY:%uL", value); break; case NGX_HTTP_V3_PARAM_MAX_HEADER_LIST_SIZE: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 param SETTINGS_MAX_HEADER_LIST_SIZE:%uL", value); break; case NGX_HTTP_V3_PARAM_BLOCKED_STREAMS: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 param QPACK_BLOCKED_STREAMS:%uL", value); break; default: ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 param #%uL:%uL", id, value); } return NGX_OK; }