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src/http/v3/ngx_http_v3_request.c - nginx source code
Global variables defined
Data types defined
Functions defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- #include <ngx_http.h>
- static void ngx_http_v3_init_request_stream(ngx_connection_t *c);
- static void ngx_http_v3_wait_request_handler(ngx_event_t *rev);
- static void ngx_http_v3_cleanup_connection(void *data);
- static void ngx_http_v3_cleanup_request(void *data);
- static void ngx_http_v3_process_request(ngx_event_t *rev);
- static ngx_int_t ngx_http_v3_process_header(ngx_http_request_t *r,
- ngx_str_t *name, ngx_str_t *value);
- static ngx_int_t ngx_http_v3_validate_header(ngx_http_request_t *r,
- ngx_str_t *name, ngx_str_t *value);
- static ngx_int_t ngx_http_v3_process_pseudo_header(ngx_http_request_t *r,
- ngx_str_t *name, ngx_str_t *value);
- static ngx_int_t ngx_http_v3_init_pseudo_headers(ngx_http_request_t *r);
- static ngx_int_t ngx_http_v3_process_request_header(ngx_http_request_t *r);
- static ngx_int_t ngx_http_v3_cookie(ngx_http_request_t *r, ngx_str_t *value);
- static ngx_int_t ngx_http_v3_construct_cookie_header(ngx_http_request_t *r);
- static void ngx_http_v3_read_client_request_body_handler(ngx_http_request_t *r);
- static ngx_int_t ngx_http_v3_do_read_client_request_body(ngx_http_request_t *r);
- static ngx_int_t ngx_http_v3_request_body_filter(ngx_http_request_t *r,
- ngx_chain_t *in);
- static const struct {
- ngx_str_t name;
- ngx_uint_t method;
- } ngx_http_v3_methods[] = {
- { ngx_string("GET"), NGX_HTTP_GET },
- { ngx_string("POST"), NGX_HTTP_POST },
- { ngx_string("HEAD"), NGX_HTTP_HEAD },
- { ngx_string("OPTIONS"), NGX_HTTP_OPTIONS },
- { ngx_string("PROPFIND"), NGX_HTTP_PROPFIND },
- { ngx_string("PUT"), NGX_HTTP_PUT },
- { ngx_string("MKCOL"), NGX_HTTP_MKCOL },
- { ngx_string("DELETE"), NGX_HTTP_DELETE },
- { ngx_string("COPY"), NGX_HTTP_COPY },
- { ngx_string("MOVE"), NGX_HTTP_MOVE },
- { ngx_string("PROPPATCH"), NGX_HTTP_PROPPATCH },
- { ngx_string("LOCK"), NGX_HTTP_LOCK },
- { ngx_string("UNLOCK"), NGX_HTTP_UNLOCK },
- { ngx_string("PATCH"), NGX_HTTP_PATCH },
- { ngx_string("TRACE"), NGX_HTTP_TRACE },
- { ngx_string("CONNECT"), NGX_HTTP_CONNECT }
- };
- void
- ngx_http_v3_init_stream(ngx_connection_t *c)
- {
- ngx_http_connection_t *hc, *phc;
- ngx_http_v3_srv_conf_t *h3scf;
- ngx_http_core_loc_conf_t *clcf;
- hc = c->data;
- hc->ssl = 1;
- clcf = ngx_http_get_module_loc_conf(hc->conf_ctx, ngx_http_core_module);
- if (c->quic == NULL) {
- h3scf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_v3_module);
- h3scf->quic.idle_timeout = clcf->keepalive_timeout;
- ngx_quic_run(c, &h3scf->quic);
- return;
- }
- phc = ngx_http_quic_get_connection(c);
- if (phc->ssl_servername) {
- hc->ssl_servername = phc->ssl_servername;
- #if (NGX_PCRE)
- hc->ssl_servername_regex = phc->ssl_servername_regex;
- #endif
- hc->conf_ctx = phc->conf_ctx;
- ngx_set_connection_log(c, clcf->error_log);
- }
- if (c->quic->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) {
- ngx_http_v3_init_uni_stream(c);
- } else {
- ngx_http_v3_init_request_stream(c);
- }
- }
- ngx_int_t
- ngx_http_v3_init(ngx_connection_t *c)
- {
- unsigned int len;
- const unsigned char *data;
- ngx_http_v3_session_t *h3c;
- ngx_http_v3_srv_conf_t *h3scf;
- ngx_http_core_loc_conf_t *clcf;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init");
- if (ngx_http_v3_init_session(c) != NGX_OK) {
- return NGX_ERROR;
- }
- h3c = ngx_http_v3_get_session(c);
- clcf = ngx_http_v3_get_module_loc_conf(c, ngx_http_core_module);
- ngx_add_timer(&h3c->keepalive, clcf->keepalive_timeout);
- h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module);
- if (h3scf->enable_hq) {
- if (!h3scf->enable) {
- h3c->hq = 1;
- return NGX_OK;
- }
- SSL_get0_alpn_selected(c->ssl->connection, &data, &len);
- if (len == sizeof(NGX_HTTP_V3_HQ_PROTO) - 1
- && ngx_strncmp(data, NGX_HTTP_V3_HQ_PROTO, len) == 0)
- {
- h3c->hq = 1;
- return NGX_OK;
- }
- }
- if (ngx_http_v3_send_settings(c) != NGX_OK) {
- return NGX_ERROR;
- }
- if (h3scf->max_table_capacity > 0) {
- if (ngx_http_v3_get_uni_stream(c, NGX_HTTP_V3_STREAM_DECODER) == NULL) {
- return NGX_ERROR;
- }
- }
- return NGX_OK;
- }
- void
- ngx_http_v3_shutdown(ngx_connection_t *c)
- {
- ngx_http_v3_session_t *h3c;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 shutdown");
- h3c = ngx_http_v3_get_session(c);
- if (h3c == NULL) {
- ngx_quic_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
- "connection shutdown");
- return;
- }
- if (!h3c->goaway) {
- h3c->goaway = 1;
- if (!h3c->hq) {
- (void) ngx_http_v3_send_goaway(c, h3c->next_request_id);
- }
- ngx_http_v3_shutdown_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
- "connection shutdown");
- }
- }
- static void
- ngx_http_v3_init_request_stream(ngx_connection_t *c)
- {
- uint64_t n;
- ngx_event_t *rev;
- ngx_pool_cleanup_t *cln;
- ngx_http_connection_t *hc;
- ngx_http_v3_session_t *h3c;
- ngx_http_core_loc_conf_t *clcf;
- ngx_http_core_srv_conf_t *cscf;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init request stream");
- #if (NGX_STAT_STUB)
- (void) ngx_atomic_fetch_add(ngx_stat_active, 1);
- #endif
- hc = c->data;
- clcf = ngx_http_get_module_loc_conf(hc->conf_ctx, ngx_http_core_module);
- n = c->quic->id >> 2;
- if (n >= clcf->keepalive_requests * 2) {
- ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_EXCESSIVE_LOAD,
- "too many requests per connection");
- ngx_http_close_connection(c);
- return;
- }
- h3c = ngx_http_v3_get_session(c);
- if (h3c->goaway) {
- c->close = 1;
- ngx_http_close_connection(c);
- return;
- }
- h3c->next_request_id = c->quic->id + 0x04;
- if (n + 1 == clcf->keepalive_requests
- || ngx_current_msec - c->start_time > clcf->keepalive_time)
- {
- h3c->goaway = 1;
- if (!h3c->hq) {
- if (ngx_http_v3_send_goaway(c, h3c->next_request_id) != NGX_OK) {
- ngx_http_close_connection(c);
- return;
- }
- }
- ngx_http_v3_shutdown_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
- "reached maximum number of requests");
- }
- cln = ngx_pool_cleanup_add(c->pool, 0);
- if (cln == NULL) {
- ngx_http_close_connection(c);
- return;
- }
- cln->handler = ngx_http_v3_cleanup_connection;
- cln->data = c;
- h3c->nrequests++;
- if (h3c->keepalive.timer_set) {
- ngx_del_timer(&h3c->keepalive);
- }
- rev = c->read;
- if (!h3c->hq) {
- rev->handler = ngx_http_v3_wait_request_handler;
- c->write->handler = ngx_http_empty_handler;
- }
- if (rev->ready) {
- rev->handler(rev);
- return;
- }
- cscf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_core_module);
- ngx_add_timer(rev, cscf->client_header_timeout);
- ngx_reusable_connection(c, 1);
- if (ngx_handle_read_event(rev, 0) != NGX_OK) {
- ngx_http_close_connection(c);
- return;
- }
- }
- static void
- ngx_http_v3_wait_request_handler(ngx_event_t *rev)
- {
- size_t size;
- ssize_t n;
- ngx_buf_t *b;
- ngx_connection_t *c;
- ngx_pool_cleanup_t *cln;
- ngx_http_request_t *r;
- ngx_http_connection_t *hc;
- ngx_http_core_srv_conf_t *cscf;
- c = rev->data;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 wait request handler");
- if (rev->timedout) {
- ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
- c->timedout = 1;
- ngx_http_close_connection(c);
- return;
- }
- if (c->close) {
- ngx_http_close_connection(c);
- return;
- }
- hc = c->data;
- cscf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_core_module);
- size = cscf->client_header_buffer_size;
- b = c->buffer;
- if (b == NULL) {
- b = ngx_create_temp_buf(c->pool, size);
- if (b == NULL) {
- ngx_http_close_connection(c);
- return;
- }
- c->buffer = b;
- } else if (b->start == NULL) {
- b->start = ngx_palloc(c->pool, size);
- if (b->start == NULL) {
- ngx_http_close_connection(c);
- return;
- }
- b->pos = b->start;
- b->last = b->start;
- b->end = b->last + size;
- }
- n = c->recv(c, b->last, size);
- if (n == NGX_AGAIN) {
- if (!rev->timer_set) {
- ngx_add_timer(rev, cscf->client_header_timeout);
- ngx_reusable_connection(c, 1);
- }
- if (ngx_handle_read_event(rev, 0) != NGX_OK) {
- ngx_http_close_connection(c);
- return;
- }
-
- if (ngx_pfree(c->pool, b->start) == NGX_OK) {
- b->start = NULL;
- }
- return;
- }
- if (n == NGX_ERROR) {
- ngx_http_close_connection(c);
- return;
- }
- if (n == 0) {
- ngx_log_error(NGX_LOG_INFO, c->log, 0,
- "client closed connection");
- ngx_http_close_connection(c);
- return;
- }
- b->last += n;
- c->log->action = "reading client request";
- ngx_reusable_connection(c, 0);
- r = ngx_http_create_request(c);
- if (r == NULL) {
- ngx_http_close_connection(c);
- return;
- }
- r->http_version = NGX_HTTP_VERSION_30;
- r->v3_parse = ngx_pcalloc(r->pool, sizeof(ngx_http_v3_parse_t));
- if (r->v3_parse == NULL) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return;
- }
- r->v3_parse->header_limit = cscf->large_client_header_buffers.size
- * cscf->large_client_header_buffers.num;
- c->data = r;
- c->requests = (c->quic->id >> 2) + 1;
- cln = ngx_pool_cleanup_add(r->pool, 0);
- if (cln == NULL) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return;
- }
- cln->handler = ngx_http_v3_cleanup_request;
- cln->data = r;
- rev->handler = ngx_http_v3_process_request;
- ngx_http_v3_process_request(rev);
- }
- void
- ngx_http_v3_reset_stream(ngx_connection_t *c)
- {
- ngx_http_v3_session_t *h3c;
- h3c = ngx_http_v3_get_session(c);
- if (!c->read->eof && !h3c->hq
- && h3c->known_streams[NGX_HTTP_V3_STREAM_SERVER_DECODER]
- && (c->quic->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) == 0)
- {
- (void) ngx_http_v3_send_cancel_stream(c, c->quic->id);
- }
- if (c->timedout) {
- ngx_quic_reset_stream(c, NGX_HTTP_V3_ERR_GENERAL_PROTOCOL_ERROR);
- } else if (c->close) {
- ngx_quic_reset_stream(c, NGX_HTTP_V3_ERR_REQUEST_REJECTED);
- } else if (c->requests == 0 || c->error) {
- ngx_quic_reset_stream(c, NGX_HTTP_V3_ERR_INTERNAL_ERROR);
- }
- }
- static void
- ngx_http_v3_cleanup_connection(void *data)
- {
- ngx_connection_t *c = data;
- ngx_http_v3_session_t *h3c;
- ngx_http_core_loc_conf_t *clcf;
- h3c = ngx_http_v3_get_session(c);
- if (--h3c->nrequests == 0) {
- clcf = ngx_http_v3_get_module_loc_conf(c, ngx_http_core_module);
- ngx_add_timer(&h3c->keepalive, clcf->keepalive_timeout);
- }
- }
- static void
- ngx_http_v3_cleanup_request(void *data)
- {
- ngx_http_request_t *r = data;
- if (!r->response_sent) {
- r->connection->error = 1;
- }
- }
- static void
- ngx_http_v3_process_request(ngx_event_t *rev)
- {
- u_char *p;
- ssize_t n;
- ngx_buf_t *b;
- ngx_int_t rc;
- ngx_connection_t *c;
- ngx_http_request_t *r;
- ngx_http_v3_session_t *h3c;
- ngx_http_core_srv_conf_t *cscf;
- ngx_http_v3_parse_headers_t *st;
- c = rev->data;
- r = c->data;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http3 process request");
- if (rev->timedout) {
- ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
- c->timedout = 1;
- ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT);
- return;
- }
- h3c = ngx_http_v3_get_session(c);
- st = &r->v3_parse->headers;
- b = r->header_in;
- for ( ;; ) {
- if (b->pos == b->last) {
- if (rev->ready) {
- n = c->recv(c, b->start, b->end - b->start);
- } else {
- n = NGX_AGAIN;
- }
- if (n == NGX_AGAIN) {
- if (!rev->timer_set) {
- cscf = ngx_http_get_module_srv_conf(r,
- ngx_http_core_module);
- ngx_add_timer(rev, cscf->client_header_timeout);
- }
- if (ngx_handle_read_event(rev, 0) != NGX_OK) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- }
- break;
- }
- if (n == 0) {
- ngx_log_error(NGX_LOG_INFO, c->log, 0,
- "client prematurely closed connection");
- }
- if (n == 0 || n == NGX_ERROR) {
- c->error = 1;
- c->log->action = "reading client request";
- ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
- break;
- }
- b->pos = b->start;
- b->last = b->start + n;
- }
- p = b->pos;
- rc = ngx_http_v3_parse_headers(c, st, b);
- if (rc > 0) {
- ngx_quic_reset_stream(c, rc);
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "client sent invalid header");
- ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
- break;
- }
- if (rc == NGX_ERROR) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- break;
- }
- r->request_length += b->pos - p;
- h3c->total_bytes += b->pos - p;
- if (ngx_http_v3_check_flood(c) != NGX_OK) {
- ngx_http_close_request(r, NGX_HTTP_CLOSE);
- break;
- }
- if (rc == NGX_BUSY) {
- if (rev->error) {
- ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
- break;
- }
- if (!rev->timer_set) {
- cscf = ngx_http_get_module_srv_conf(r,
- ngx_http_core_module);
- ngx_add_timer(rev, cscf->client_header_timeout);
- }
- if (ngx_handle_read_event(rev, 0) != NGX_OK) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- }
- break;
- }
- if (rc == NGX_AGAIN) {
- continue;
- }
-
- h3c->payload_bytes += ngx_http_v3_encode_field_l(NULL,
- &st->field_rep.field.name,
- &st->field_rep.field.value);
- if (ngx_http_v3_process_header(r, &st->field_rep.field.name,
- &st->field_rep.field.value)
- != NGX_OK)
- {
- break;
- }
- if (rc == NGX_DONE) {
- if (ngx_http_v3_process_request_header(r) != NGX_OK) {
- break;
- }
- ngx_http_process_request(r);
- break;
- }
- }
- ngx_http_run_posted_requests(c);
- return;
- }
- static ngx_int_t
- ngx_http_v3_process_header(ngx_http_request_t *r, ngx_str_t *name,
- ngx_str_t *value)
- {
- size_t len;
- ngx_table_elt_t *h;
- ngx_http_header_t *hh;
- ngx_http_core_srv_conf_t *cscf;
- ngx_http_core_main_conf_t *cmcf;
- static ngx_str_t cookie = ngx_string("cookie");
- len = name->len + value->len;
- if (len > r->v3_parse->header_limit) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent too large header");
- ngx_http_finalize_request(r, NGX_HTTP_REQUEST_HEADER_TOO_LARGE);
- return NGX_ERROR;
- }
- r->v3_parse->header_limit -= len;
- if (ngx_http_v3_validate_header(r, name, value) != NGX_OK) {
- ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
- return NGX_ERROR;
- }
- if (r->invalid_header) {
- cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
- if (cscf->ignore_invalid_headers) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent invalid header: \"%V\"", name);
- return NGX_OK;
- }
- }
- if (name->len && name->data[0] == ':') {
- return ngx_http_v3_process_pseudo_header(r, name, value);
- }
- if (ngx_http_v3_init_pseudo_headers(r) != NGX_OK) {
- return NGX_ERROR;
- }
- if (name->len == cookie.len
- && ngx_memcmp(name->data, cookie.data, cookie.len) == 0)
- {
- if (ngx_http_v3_cookie(r, value) != NGX_OK) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return NGX_ERROR;
- }
- } else {
- h = ngx_list_push(&r->headers_in.headers);
- if (h == NULL) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return NGX_ERROR;
- }
- h->key = *name;
- h->value = *value;
- h->lowcase_key = h->key.data;
- h->hash = ngx_hash_key(h->key.data, h->key.len);
- cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
- hh = ngx_hash_find(&cmcf->headers_in_hash, h->hash,
- h->lowcase_key, h->key.len);
- if (hh && hh->handler(r, h, hh->offset) != NGX_OK) {
- return NGX_ERROR;
- }
- }
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http3 header: \"%V: %V\"", name, value);
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_v3_validate_header(ngx_http_request_t *r, ngx_str_t *name,
- ngx_str_t *value)
- {
- u_char ch;
- ngx_uint_t i;
- ngx_http_core_srv_conf_t *cscf;
- r->invalid_header = 0;
- cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
- for (i = (name->data[0] == ':'); i != name->len; i++) {
- ch = name->data[i];
- if ((ch >= 'a' && ch <= 'z')
- || (ch == '-')
- || (ch >= '0' && ch <= '9')
- || (ch == '_' && cscf->underscores_in_headers))
- {
- continue;
- }
- if (ch <= 0x20 || ch == 0x7f || ch == ':'
- || (ch >= 'A' && ch <= 'Z'))
- {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent invalid header name: \"%V\"", name);
- return NGX_ERROR;
- }
- r->invalid_header = 1;
- }
- for (i = 0; i != value->len; i++) {
- ch = value->data[i];
- if (ch == '\0' || ch == LF || ch == CR) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent header \"%V\" with "
- "invalid value: \"%V\"", name, value);
- return NGX_ERROR;
- }
- }
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_v3_process_pseudo_header(ngx_http_request_t *r, ngx_str_t *name,
- ngx_str_t *value)
- {
- u_char ch, c;
- ngx_uint_t i;
- if (r->request_line.len) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent out of order pseudo-headers");
- goto failed;
- }
- if (name->len == 7 && ngx_strncmp(name->data, ":method", 7) == 0) {
- if (r->method_name.len) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent duplicate \":method\" header");
- goto failed;
- }
- if (value->len == 0) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent empty \":method\" header");
- goto failed;
- }
- r->method_name = *value;
- for (i = 0; i < sizeof(ngx_http_v3_methods)
- / sizeof(ngx_http_v3_methods[0]); i++)
- {
- if (value->len == ngx_http_v3_methods[i].name.len
- && ngx_strncmp(value->data,
- ngx_http_v3_methods[i].name.data, value->len)
- == 0)
- {
- r->method = ngx_http_v3_methods[i].method;
- break;
- }
- }
- for (i = 0; i < value->len; i++) {
- ch = value->data[i];
- if ((ch < 'A' || ch > 'Z') && ch != '_' && ch != '-') {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent invalid method: \"%V\"", value);
- goto failed;
- }
- }
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http3 method \"%V\" %ui", value, r->method);
- return NGX_OK;
- }
- if (name->len == 5 && ngx_strncmp(name->data, ":path", 5) == 0) {
- if (r->uri_start) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent duplicate \":path\" header");
- goto failed;
- }
- if (value->len == 0) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent empty \":path\" header");
- goto failed;
- }
- r->uri_start = value->data;
- r->uri_end = value->data + value->len;
- if (ngx_http_parse_uri(r) != NGX_OK) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent invalid \":path\" header: \"%V\"",
- value);
- goto failed;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http3 path \"%V\"", value);
- return NGX_OK;
- }
- if (name->len == 7 && ngx_strncmp(name->data, ":scheme", 7) == 0) {
- if (r->schema.len) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent duplicate \":scheme\" header");
- goto failed;
- }
- if (value->len == 0) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent empty \":scheme\" header");
- goto failed;
- }
- for (i = 0; i < value->len; i++) {
- ch = value->data[i];
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'z') {
- continue;
- }
- if (((ch >= '0' && ch <= '9')
- || ch == '+' || ch == '-' || ch == '.')
- && i > 0)
- {
- continue;
- }
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent invalid \":scheme\" header: \"%V\"",
- value);
- goto failed;
- }
- r->schema = *value;
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http3 schema \"%V\"", value);
- return NGX_OK;
- }
- if (name->len == 10 && ngx_strncmp(name->data, ":authority", 10) == 0) {
- if (r->host_start) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent duplicate \":authority\" header");
- goto failed;
- }
- r->host_start = value->data;
- r->host_end = value->data + value->len;
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http3 authority \"%V\"", value);
- return NGX_OK;
- }
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent unknown pseudo-header \"%V\"", name);
- failed:
- ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
- return NGX_ERROR;
- }
- static ngx_int_t
- ngx_http_v3_init_pseudo_headers(ngx_http_request_t *r)
- {
- size_t len;
- u_char *p;
- ngx_int_t rc;
- ngx_str_t host;
- if (r->request_line.len) {
- return NGX_OK;
- }
- if (r->method_name.len == 0) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent no \":method\" header");
- goto failed;
- }
- if (r->schema.len == 0) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent no \":scheme\" header");
- goto failed;
- }
- if (r->uri_start == NULL) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent no \":path\" header");
- goto failed;
- }
- len = r->method_name.len + 1
- + (r->uri_end - r->uri_start) + 1
- + sizeof("HTTP/3.0") - 1;
- p = ngx_pnalloc(r->pool, len);
- if (p == NULL) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return NGX_ERROR;
- }
- r->request_line.data = p;
- p = ngx_cpymem(p, r->method_name.data, r->method_name.len);
- *p++ = ' ';
- p = ngx_cpymem(p, r->uri_start, r->uri_end - r->uri_start);
- *p++ = ' ';
- p = ngx_cpymem(p, "HTTP/3.0", sizeof("HTTP/3.0") - 1);
- r->request_line.len = p - r->request_line.data;
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http3 request line: \"%V\"", &r->request_line);
- ngx_str_set(&r->http_protocol, "HTTP/3.0");
- if (ngx_http_process_request_uri(r) != NGX_OK) {
- return NGX_ERROR;
- }
- if (r->host_end) {
- host.len = r->host_end - r->host_start;
- host.data = r->host_start;
- rc = ngx_http_validate_host(&host, r->pool, 0);
- if (rc == NGX_DECLINED) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent invalid host in request line");
- goto failed;
- }
- if (rc == NGX_ERROR) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return NGX_ERROR;
- }
- if (ngx_http_set_virtual_server(r, &host) == NGX_ERROR) {
- return NGX_ERROR;
- }
- r->headers_in.server = host;
- }
- if (ngx_list_init(&r->headers_in.headers, r->pool, 20,
- sizeof(ngx_table_elt_t))
- != NGX_OK)
- {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return NGX_ERROR;
- }
- return NGX_OK;
- failed:
- ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
- return NGX_ERROR;
- }
- static ngx_int_t
- ngx_http_v3_process_request_header(ngx_http_request_t *r)
- {
- ssize_t n;
- ngx_buf_t *b;
- ngx_connection_t *c;
- ngx_http_v3_session_t *h3c;
- ngx_http_v3_srv_conf_t *h3scf;
- c = r->connection;
- if (ngx_http_v3_init_pseudo_headers(r) != NGX_OK) {
- return NGX_ERROR;
- }
- h3c = ngx_http_v3_get_session(c);
- h3scf = ngx_http_get_module_srv_conf(r, ngx_http_v3_module);
- if ((h3c->hq && !h3scf->enable_hq) || (!h3c->hq && !h3scf->enable)) {
- ngx_log_error(NGX_LOG_INFO, c->log, 0,
- "client attempted to request the server name "
- "for which the negotiated protocol is disabled");
- ngx_http_finalize_request(r, NGX_HTTP_MISDIRECTED_REQUEST);
- return NGX_ERROR;
- }
- if (ngx_http_v3_construct_cookie_header(r) != NGX_OK) {
- return NGX_ERROR;
- }
- if (r->headers_in.server.len == 0) {
- ngx_log_error(NGX_LOG_INFO, c->log, 0,
- "client sent neither \":authority\" nor \"Host\" header");
- goto failed;
- }
- if (r->headers_in.host) {
- if (r->headers_in.host->value.len != r->headers_in.server.len
- || ngx_memcmp(r->headers_in.host->value.data,
- r->headers_in.server.data,
- r->headers_in.server.len)
- != 0)
- {
- ngx_log_error(NGX_LOG_INFO, c->log, 0,
- "client sent \":authority\" and \"Host\" headers "
- "with different values");
- goto failed;
- }
- }
- if (r->headers_in.content_length) {
- r->headers_in.content_length_n =
- ngx_atoof(r->headers_in.content_length->value.data,
- r->headers_in.content_length->value.len);
- if (r->headers_in.content_length_n == NGX_ERROR) {
- ngx_log_error(NGX_LOG_INFO, c->log, 0,
- "client sent invalid \"Content-Length\" header");
- goto failed;
- }
- } else {
- b = r->header_in;
- n = b->last - b->pos;
- if (n == 0) {
- n = c->recv(c, b->start, b->end - b->start);
- if (n == NGX_ERROR) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return NGX_ERROR;
- }
- if (n > 0) {
- b->pos = b->start;
- b->last = b->start + n;
- }
- }
- if (n != 0) {
- r->headers_in.chunked = 1;
- }
- }
- if (r->method == NGX_HTTP_CONNECT) {
- ngx_log_error(NGX_LOG_INFO, c->log, 0, "client sent CONNECT method");
- ngx_http_finalize_request(r, NGX_HTTP_NOT_ALLOWED);
- return NGX_ERROR;
- }
- if (r->method == NGX_HTTP_TRACE) {
- ngx_log_error(NGX_LOG_INFO, c->log, 0, "client sent TRACE method");
- ngx_http_finalize_request(r, NGX_HTTP_NOT_ALLOWED);
- return NGX_ERROR;
- }
- return NGX_OK;
- failed:
- ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
- return NGX_ERROR;
- }
- static ngx_int_t
- ngx_http_v3_cookie(ngx_http_request_t *r, ngx_str_t *value)
- {
- ngx_str_t *val;
- ngx_array_t *cookies;
- cookies = r->v3_parse->cookies;
- if (cookies == NULL) {
- cookies = ngx_array_create(r->pool, 2, sizeof(ngx_str_t));
- if (cookies == NULL) {
- return NGX_ERROR;
- }
- r->v3_parse->cookies = cookies;
- }
- val = ngx_array_push(cookies);
- if (val == NULL) {
- return NGX_ERROR;
- }
- *val = *value;
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_v3_construct_cookie_header(ngx_http_request_t *r)
- {
- u_char *buf, *p, *end;
- size_t len;
- ngx_str_t *vals;
- ngx_uint_t i;
- ngx_array_t *cookies;
- ngx_table_elt_t *h;
- ngx_http_header_t *hh;
- ngx_http_core_main_conf_t *cmcf;
- static ngx_str_t cookie = ngx_string("cookie");
- cookies = r->v3_parse->cookies;
- if (cookies == NULL) {
- return NGX_OK;
- }
- vals = cookies->elts;
- i = 0;
- len = 0;
- do {
- len += vals[i].len + 2;
- } while (++i != cookies->nelts);
- len -= 2;
- buf = ngx_pnalloc(r->pool, len + 1);
- if (buf == NULL) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return NGX_ERROR;
- }
- p = buf;
- end = buf + len;
- for (i = 0; ; i++) {
- p = ngx_cpymem(p, vals[i].data, vals[i].len);
- if (p == end) {
- *p = '\0';
- break;
- }
- *p++ = ';'; *p++ = ' ';
- }
- h = ngx_list_push(&r->headers_in.headers);
- if (h == NULL) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return NGX_ERROR;
- }
- h->hash = ngx_hash(ngx_hash(ngx_hash(ngx_hash(
- ngx_hash('c', 'o'), 'o'), 'k'), 'i'), 'e');
- h->key.len = cookie.len;
- h->key.data = cookie.data;
- h->value.len = len;
- h->value.data = buf;
- h->lowcase_key = cookie.data;
- cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
- hh = ngx_hash_find(&cmcf->headers_in_hash, h->hash,
- h->lowcase_key, h->key.len);
- if (hh == NULL) {
- ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
- return NGX_ERROR;
- }
- if (hh->handler(r, h, hh->offset) != NGX_OK) {
-
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- ngx_int_t
- ngx_http_v3_read_request_body(ngx_http_request_t *r)
- {
- size_t preread;
- ngx_int_t rc;
- ngx_chain_t *cl, out;
- ngx_http_request_body_t *rb;
- ngx_http_core_loc_conf_t *clcf;
- rb = r->request_body;
- preread = r->header_in->last - r->header_in->pos;
- if (preread) {
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http3 client request body preread %uz", preread);
- out.buf = r->header_in;
- out.next = NULL;
- cl = &out;
- } else {
- cl = NULL;
- }
- rc = ngx_http_v3_request_body_filter(r, cl);
- if (rc != NGX_OK) {
- return rc;
- }
- if (rb->rest == 0 && rb->last_saved) {
-
- r->request_body_no_buffering = 0;
- rb->post_handler(r);
- return NGX_OK;
- }
- if (rb->rest < 0) {
- ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
- "negative request body rest");
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
- rb->buf = ngx_create_temp_buf(r->pool, clcf->client_body_buffer_size);
- if (rb->buf == NULL) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- r->read_event_handler = ngx_http_v3_read_client_request_body_handler;
- r->write_event_handler = ngx_http_request_empty_handler;
- return ngx_http_v3_do_read_client_request_body(r);
- }
- static void
- ngx_http_v3_read_client_request_body_handler(ngx_http_request_t *r)
- {
- ngx_int_t rc;
- if (r->connection->read->timedout) {
- r->connection->timedout = 1;
- ngx_http_finalize_request(r, NGX_HTTP_REQUEST_TIME_OUT);
- return;
- }
- rc = ngx_http_v3_do_read_client_request_body(r);
- if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
- ngx_http_finalize_request(r, rc);
- }
- }
- ngx_int_t
- ngx_http_v3_read_unbuffered_request_body(ngx_http_request_t *r)
- {
- ngx_int_t rc;
- if (r->connection->read->timedout) {
- r->connection->timedout = 1;
- return NGX_HTTP_REQUEST_TIME_OUT;
- }
- rc = ngx_http_v3_do_read_client_request_body(r);
- if (rc == NGX_OK) {
- r->reading_body = 0;
- }
- return rc;
- }
- static ngx_int_t
- ngx_http_v3_do_read_client_request_body(ngx_http_request_t *r)
- {
- off_t rest;
- size_t size;
- ssize_t n;
- ngx_int_t rc;
- ngx_uint_t flush;
- ngx_chain_t out;
- ngx_connection_t *c;
- ngx_http_request_body_t *rb;
- ngx_http_core_loc_conf_t *clcf;
- c = r->connection;
- rb = r->request_body;
- flush = 1;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
- "http3 read client request body");
- for ( ;; ) {
- for ( ;; ) {
- if (rb->rest == 0) {
- break;
- }
- if (rb->buf->last == rb->buf->end) {
-
- rc = ngx_http_v3_request_body_filter(r, NULL);
- if (rc != NGX_OK) {
- return rc;
- }
- if (rb->busy != NULL) {
- if (r->request_body_no_buffering) {
- if (c->read->timer_set) {
- ngx_del_timer(c->read);
- }
- if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- return NGX_AGAIN;
- }
- if (rb->filter_need_buffering) {
- clcf = ngx_http_get_module_loc_conf(r,
- ngx_http_core_module);
- ngx_add_timer(c->read, clcf->client_body_timeout);
- if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- return NGX_AGAIN;
- }
- ngx_log_error(NGX_LOG_ALERT, c->log, 0,
- "busy buffers after request body flush");
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- flush = 0;
- rb->buf->pos = rb->buf->start;
- rb->buf->last = rb->buf->start;
- }
- size = rb->buf->end - rb->buf->last;
- rest = rb->rest - (rb->buf->last - rb->buf->pos);
- if ((off_t) size > rest) {
- size = (size_t) rest;
- }
- if (size == 0) {
- break;
- }
- n = c->recv(c, rb->buf->last, size);
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
- "http3 client request body recv %z", n);
- if (n == NGX_AGAIN) {
- break;
- }
- if (n == 0) {
- rb->buf->last_buf = 1;
- }
- if (n == NGX_ERROR) {
- c->error = 1;
- return NGX_HTTP_BAD_REQUEST;
- }
- rb->buf->last += n;
-
- flush = 0;
- out.buf = rb->buf;
- out.next = NULL;
- rc = ngx_http_v3_request_body_filter(r, &out);
- if (rc != NGX_OK) {
- return rc;
- }
- if (rb->rest == 0) {
- break;
- }
- if (rb->buf->last < rb->buf->end) {
- break;
- }
- }
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
- "http3 client request body rest %O", rb->rest);
- if (flush) {
- rc = ngx_http_v3_request_body_filter(r, NULL);
- if (rc != NGX_OK) {
- return rc;
- }
- }
- if (rb->rest == 0 && rb->last_saved) {
- break;
- }
- if (!c->read->ready || rb->rest == 0) {
- clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
- ngx_add_timer(c->read, clcf->client_body_timeout);
- if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- return NGX_AGAIN;
- }
- }
- if (c->read->timer_set) {
- ngx_del_timer(c->read);
- }
- if (!r->request_body_no_buffering) {
- r->read_event_handler = ngx_http_block_reading;
- rb->post_handler(r);
- }
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_v3_request_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
- {
- off_t max;
- size_t size;
- u_char *p;
- ngx_int_t rc;
- ngx_buf_t *b;
- ngx_uint_t last;
- ngx_chain_t *cl, *out, *tl, **ll;
- ngx_http_v3_session_t *h3c;
- ngx_http_request_body_t *rb;
- ngx_http_core_loc_conf_t *clcf;
- ngx_http_core_srv_conf_t *cscf;
- ngx_http_v3_parse_data_t *st;
- rb = r->request_body;
- st = &r->v3_parse->body;
- h3c = ngx_http_v3_get_session(r->connection);
- if (rb->rest == -1) {
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http3 request body filter");
- cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
- rb->rest = cscf->large_client_header_buffers.size;
- }
- clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
- max = r->headers_in.content_length_n;
- if (max == -1 && clcf->client_max_body_size) {
- max = clcf->client_max_body_size;
- }
- out = NULL;
- ll = &out;
- last = 0;
- for (cl = in; cl; cl = cl->next) {
- ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0,
- "http3 body buf "
- "t:%d f:%d %p, pos %p, size: %z file: %O, size: %O",
- cl->buf->temporary, cl->buf->in_file,
- cl->buf->start, cl->buf->pos,
- cl->buf->last - cl->buf->pos,
- cl->buf->file_pos,
- cl->buf->file_last - cl->buf->file_pos);
- if (cl->buf->last_buf) {
- last = 1;
- }
- b = NULL;
- while (cl->buf->pos < cl->buf->last) {
- if (st->length == 0) {
- p = cl->buf->pos;
- rc = ngx_http_v3_parse_data(r->connection, st, cl->buf);
- r->request_length += cl->buf->pos - p;
- h3c->total_bytes += cl->buf->pos - p;
- if (ngx_http_v3_check_flood(r->connection) != NGX_OK) {
- return NGX_HTTP_CLOSE;
- }
- if (rc == NGX_AGAIN) {
- continue;
- }
- if (rc == NGX_DONE) {
- last = 1;
- goto done;
- }
- if (rc > 0) {
- ngx_quic_reset_stream(r->connection, rc);
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "client sent invalid body");
- return NGX_HTTP_BAD_REQUEST;
- }
- if (rc == NGX_ERROR) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
-
- if (max != -1 && (uint64_t) (max - rb->received) < st->length) {
- if (r->headers_in.content_length_n != -1) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client intended to send body data "
- "larger than declared");
- return NGX_HTTP_BAD_REQUEST;
- }
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "client intended to send too large "
- "body: %O+%ui bytes",
- rb->received, st->length);
- return NGX_HTTP_REQUEST_ENTITY_TOO_LARGE;
- }
- continue;
- }
- if (b
- && st->length <= 128
- && (uint64_t) (cl->buf->last - cl->buf->pos) >= st->length)
- {
- rb->received += st->length;
- r->request_length += st->length;
- h3c->total_bytes += st->length;
- h3c->payload_bytes += st->length;
- if (st->length < 8) {
- while (st->length) {
- *b->last++ = *cl->buf->pos++;
- st->length--;
- }
- } else {
- ngx_memmove(b->last, cl->buf->pos, st->length);
- b->last += st->length;
- cl->buf->pos += st->length;
- st->length = 0;
- }
- continue;
- }
- tl = ngx_chain_get_free_buf(r->pool, &rb->free);
- if (tl == NULL) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- b = tl->buf;
- ngx_memzero(b, sizeof(ngx_buf_t));
- b->temporary = 1;
- b->tag = (ngx_buf_tag_t) &ngx_http_read_client_request_body;
- b->start = cl->buf->pos;
- b->pos = cl->buf->pos;
- b->last = cl->buf->last;
- b->end = cl->buf->end;
- b->flush = r->request_body_no_buffering;
- *ll = tl;
- ll = &tl->next;
- size = cl->buf->last - cl->buf->pos;
- if (size > st->length) {
- cl->buf->pos += (size_t) st->length;
- rb->received += st->length;
- r->request_length += st->length;
- h3c->total_bytes += st->length;
- h3c->payload_bytes += st->length;
- st->length = 0;
- } else {
- st->length -= size;
- rb->received += size;
- r->request_length += size;
- h3c->total_bytes += size;
- h3c->payload_bytes += size;
- cl->buf->pos = cl->buf->last;
- }
- b->last = cl->buf->pos;
- }
- }
- done:
- if (last) {
- if (st->length > 0) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client prematurely closed stream");
- r->connection->error = 1;
- return NGX_HTTP_BAD_REQUEST;
- }
- if (r->headers_in.content_length_n == -1) {
- r->headers_in.content_length_n = rb->received;
- } else if (r->headers_in.content_length_n != rb->received) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "client sent less body data than expected: "
- "%O out of %O bytes of request body received",
- rb->received, r->headers_in.content_length_n);
- return NGX_HTTP_BAD_REQUEST;
- }
- rb->rest = 0;
- tl = ngx_chain_get_free_buf(r->pool, &rb->free);
- if (tl == NULL) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- b = tl->buf;
- ngx_memzero(b, sizeof(ngx_buf_t));
- b->last_buf = 1;
- *ll = tl;
- } else {
-
- cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
- rb->rest = (off_t) cscf->large_client_header_buffers.size;
- }
- rc = ngx_http_top_request_body_filter(r, out);
- ngx_chain_update_chains(r->pool, &rb->free, &rb->busy, &out,
- (ngx_buf_tag_t) &ngx_http_read_client_request_body);
- return rc;
- }
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