mirror of
https://github.com/nginx/nginx.git
synced 2025-06-13 22:52:42 +08:00
a687d08062
Previously dynamic table was not functional because of zero limit on its size set by default. Now the following changes enable it: - new directives to set SETTINGS_QPACK_MAX_TABLE_CAPACITY and SETTINGS_QPACK_BLOCKED_STREAMS - send settings with SETTINGS_QPACK_MAX_TABLE_CAPACITY and SETTINGS_QPACK_BLOCKED_STREAMS to the client - send Insert Count Increment to the client - send Header Acknowledgement to the client - evict old dynamic table entries on overflow - decode Required Insert Count from client - block stream if Required Insert Count is not reached
757 lines
19 KiB
C
757 lines
19 KiB
C
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/*
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* Copyright (C) Roman Arutyunyan
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* Copyright (C) Nginx, Inc.
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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static ngx_int_t ngx_http_v3_process_pseudo_header(ngx_http_request_t *r,
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ngx_str_t *name, ngx_str_t *value);
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struct {
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ngx_str_t name;
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ngx_uint_t method;
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} ngx_http_v3_methods[] = {
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{ ngx_string("GET"), NGX_HTTP_GET },
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{ ngx_string("POST"), NGX_HTTP_POST },
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{ ngx_string("HEAD"), NGX_HTTP_HEAD },
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{ ngx_string("OPTIONS"), NGX_HTTP_OPTIONS },
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{ ngx_string("PROPFIND"), NGX_HTTP_PROPFIND },
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{ ngx_string("PUT"), NGX_HTTP_PUT },
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{ ngx_string("MKCOL"), NGX_HTTP_MKCOL },
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{ ngx_string("DELETE"), NGX_HTTP_DELETE },
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{ ngx_string("COPY"), NGX_HTTP_COPY },
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{ ngx_string("MOVE"), NGX_HTTP_MOVE },
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{ ngx_string("PROPPATCH"), NGX_HTTP_PROPPATCH },
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{ ngx_string("LOCK"), NGX_HTTP_LOCK },
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{ ngx_string("UNLOCK"), NGX_HTTP_UNLOCK },
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{ ngx_string("PATCH"), NGX_HTTP_PATCH },
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{ ngx_string("TRACE"), NGX_HTTP_TRACE }
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};
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ngx_int_t
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ngx_http_v3_parse_request(ngx_http_request_t *r, ngx_buf_t *b)
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{
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size_t len;
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u_char *p;
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ngx_int_t rc, n;
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ngx_str_t *name, *value;
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ngx_connection_t *c;
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ngx_http_v3_parse_headers_t *st;
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c = r->connection;
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st = r->h3_parse;
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if (st == NULL) {
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ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header");
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st = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_parse_headers_t));
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if (st == NULL) {
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goto failed;
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}
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r->h3_parse = st;
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r->parse_start = b->pos;
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r->state = 1;
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}
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while (b->pos < b->last) {
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rc = ngx_http_v3_parse_headers(c, st, *b->pos);
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if (rc == NGX_ERROR) {
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goto failed;
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}
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if (rc == NGX_BUSY) {
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return NGX_BUSY;
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}
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b->pos++;
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if (rc == NGX_AGAIN) {
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continue;
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}
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name = &st->header_rep.header.name;
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value = &st->header_rep.header.value;
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n = ngx_http_v3_process_pseudo_header(r, name, value);
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if (n == NGX_ERROR) {
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goto failed;
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}
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if (n == NGX_OK && rc == NGX_OK) {
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continue;
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}
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len = (r->method_end - r->method_start) + 1
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+ (r->uri_end - r->uri_start) + 1
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+ sizeof("HTTP/3") - 1;
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p = ngx_pnalloc(c->pool, len);
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if (p == NULL) {
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goto failed;
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}
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r->request_start = p;
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p = ngx_cpymem(p, r->method_start, r->method_end - r->method_start);
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*p++ = ' ';
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p = ngx_cpymem(p, r->uri_start, r->uri_end - r->uri_start);
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*p++ = ' ';
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p = ngx_cpymem(p, "HTTP/3", sizeof("HTTP/3") - 1);
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r->request_end = p;
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r->state = 0;
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return NGX_OK;
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}
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return NGX_AGAIN;
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failed:
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return NGX_HTTP_PARSE_INVALID_REQUEST;
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}
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ngx_int_t
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ngx_http_v3_parse_header(ngx_http_request_t *r, ngx_buf_t *b,
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ngx_uint_t allow_underscores)
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{
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u_char ch;
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ngx_int_t rc;
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ngx_str_t *name, *value;
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ngx_uint_t hash, i, n;
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ngx_connection_t *c;
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ngx_http_v3_parse_headers_t *st;
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enum {
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sw_start = 0,
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sw_done,
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sw_next,
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sw_header
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};
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c = r->connection;
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st = r->h3_parse;
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switch (r->state) {
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case sw_start:
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r->parse_start = b->pos;
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if (st->state) {
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r->state = sw_next;
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goto done;
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}
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name = &st->header_rep.header.name;
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if (name->len && name->data[0] != ':') {
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r->state = sw_done;
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goto done;
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}
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/* fall through */
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case sw_done:
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ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
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"http3 parse header done");
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return NGX_HTTP_PARSE_HEADER_DONE;
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case sw_next:
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r->parse_start = b->pos;
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r->invalid_header = 0;
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break;
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case sw_header:
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break;
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}
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while (b->pos < b->last) {
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rc = ngx_http_v3_parse_headers(c, st, *b->pos++);
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if (rc == NGX_ERROR) {
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return NGX_HTTP_PARSE_INVALID_HEADER;
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}
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if (rc == NGX_DONE) {
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r->state = sw_done;
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goto done;
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}
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if (rc == NGX_OK) {
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r->state = sw_next;
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goto done;
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}
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}
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r->state = sw_header;
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return NGX_AGAIN;
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done:
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name = &st->header_rep.header.name;
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value = &st->header_rep.header.value;
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r->header_name_start = name->data;
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r->header_name_end = name->data + name->len;
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r->header_start = value->data;
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r->header_end = value->data + value->len;
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hash = 0;
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i = 0;
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for (n = 0; n < name->len; n++) {
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ch = name->data[n];
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if (ch >= 'A' && ch <= 'Z') {
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/*
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* A request or response containing uppercase
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* header field names MUST be treated as malformed
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*/
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return NGX_HTTP_PARSE_INVALID_HEADER;
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}
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if (ch == '\0') {
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return NGX_HTTP_PARSE_INVALID_HEADER;
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}
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if (ch == '_' && !allow_underscores) {
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r->invalid_header = 1;
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continue;
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}
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if ((ch < 'a' || ch > 'z')
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&& (ch < '0' || ch > '9')
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&& ch != '-' && ch != '_')
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{
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r->invalid_header = 1;
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continue;
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}
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hash = ngx_hash(hash, ch);
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r->lowcase_header[i++] = ch;
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i &= (NGX_HTTP_LC_HEADER_LEN - 1);
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}
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r->header_hash = hash;
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r->lowcase_index = i;
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return NGX_OK;
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}
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static ngx_int_t
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ngx_http_v3_process_pseudo_header(ngx_http_request_t *r, ngx_str_t *name,
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ngx_str_t *value)
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{
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ngx_uint_t i;
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ngx_connection_t *c;
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if (name->len == 0 || name->data[0] != ':') {
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return NGX_DONE;
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}
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c = r->connection;
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if (name->len == 7 && ngx_strncmp(name->data, ":method", 7) == 0) {
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r->method_start = value->data;
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r->method_end = value->data + value->len;
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for (i = 0; i < sizeof(ngx_http_v3_methods)
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/ sizeof(ngx_http_v3_methods[0]); i++)
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{
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if (value->len == ngx_http_v3_methods[i].name.len
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&& ngx_strncmp(value->data, ngx_http_v3_methods[i].name.data,
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value->len) == 0)
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{
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r->method = ngx_http_v3_methods[i].method;
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break;
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}
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}
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ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
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"http3 method \"%V\" %ui", value, r->method);
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return NGX_OK;
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}
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if (name->len == 5 && ngx_strncmp(name->data, ":path", 5) == 0) {
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r->uri_start = value->data;
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r->uri_end = value->data + value->len;
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if (ngx_http_parse_uri(r) != NGX_OK) {
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ngx_log_error(NGX_LOG_INFO, c->log, 0,
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"client sent invalid :path header: \"%V\"", value);
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return NGX_ERROR;
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}
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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"http3 path \"%V\"", value);
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return NGX_OK;
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}
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if (name->len == 7 && ngx_strncmp(name->data, ":scheme", 7) == 0) {
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r->schema_start = value->data;
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r->schema_end = value->data + value->len;
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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"http3 schema \"%V\"", value);
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return NGX_OK;
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}
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if (name->len == 10 && ngx_strncmp(name->data, ":authority", 10) == 0) {
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r->host_start = value->data;
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r->host_end = value->data + value->len;
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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"http3 authority \"%V\"", value);
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return NGX_OK;
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}
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ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
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"http3 unknown pseudo header \"%V\" \"%V\"", name, value);
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return NGX_OK;
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}
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ngx_int_t
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ngx_http_v3_parse_request_body(ngx_http_request_t *r, ngx_buf_t *b,
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ngx_http_chunked_t *ctx)
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{
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ngx_int_t rc;
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ngx_connection_t *c;
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ngx_http_v3_parse_data_t *st;
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c = r->connection;
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st = ctx->h3_parse;
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if (st == NULL) {
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ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
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"http3 parse request body");
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st = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_parse_data_t));
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if (st == NULL) {
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goto failed;
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}
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r->h3_parse = st;
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}
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if (ctx->size) {
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ctx->length = ctx->size + 1;
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return (b->pos == b->last) ? NGX_AGAIN : NGX_OK;
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}
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while (b->pos < b->last) {
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rc = ngx_http_v3_parse_data(c, st, *b->pos++);
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if (rc == NGX_ERROR) {
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goto failed;
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}
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if (rc == NGX_AGAIN) {
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continue;
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}
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/* rc == NGX_DONE */
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ctx->size = st->length;
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return NGX_OK;
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}
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if (!b->last_buf) {
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ctx->length = 1;
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return NGX_AGAIN;
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}
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if (st->state) {
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goto failed;
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}
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ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header done");
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return NGX_DONE;
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failed:
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return NGX_ERROR;
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}
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ngx_chain_t *
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ngx_http_v3_create_header(ngx_http_request_t *r)
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{
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u_char *p;
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size_t len, n;
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ngx_buf_t *b;
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ngx_uint_t i, j;
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ngx_chain_t *hl, *cl, *bl;
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ngx_list_part_t *part;
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ngx_table_elt_t *header;
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ngx_connection_t *c;
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ngx_http_core_loc_conf_t *clcf;
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c = r->connection;
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ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 create header");
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len = 2;
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if (r->headers_out.status == NGX_HTTP_OK) {
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len += ngx_http_v3_encode_prefix_int(NULL, 25, 6);
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} else {
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len += 3 + ngx_http_v3_encode_prefix_int(NULL, 25, 4)
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+ ngx_http_v3_encode_prefix_int(NULL, 3, 7);
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}
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clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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if (r->headers_out.server == NULL) {
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if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_ON) {
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n = sizeof(NGINX_VER) - 1;
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} else if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_BUILD) {
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n = sizeof(NGINX_VER_BUILD) - 1;
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} else {
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n = sizeof("nginx") - 1;
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}
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len += ngx_http_v3_encode_prefix_int(NULL, 92, 4)
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+ ngx_http_v3_encode_prefix_int(NULL, n, 7) + n;
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}
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if (r->headers_out.date == NULL) {
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len += ngx_http_v3_encode_prefix_int(NULL, 6, 4)
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+ ngx_http_v3_encode_prefix_int(NULL, ngx_cached_http_time.len,
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7)
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+ ngx_cached_http_time.len;
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}
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if (r->headers_out.content_type.len) {
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n = r->headers_out.content_type.len;
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if (r->headers_out.content_type_len == r->headers_out.content_type.len
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&& r->headers_out.charset.len)
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{
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n += sizeof("; charset=") - 1 + r->headers_out.charset.len;
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}
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len += ngx_http_v3_encode_prefix_int(NULL, 53, 4)
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+ ngx_http_v3_encode_prefix_int(NULL, n, 7) + n;
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}
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if (r->headers_out.content_length_n > 0) {
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len += ngx_http_v3_encode_prefix_int(NULL, 4, 4) + 1 + NGX_OFF_T_LEN;
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} else if (r->headers_out.content_length_n == 0) {
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len += ngx_http_v3_encode_prefix_int(NULL, 4, 6);
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}
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if (r->headers_out.last_modified == NULL
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&& r->headers_out.last_modified_time != -1)
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{
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len += ngx_http_v3_encode_prefix_int(NULL, 10, 4) + 1
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+ sizeof("Last-Modified: Mon, 28 Sep 1970 06:00:00 GMT");
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}
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/* XXX location */
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#if (NGX_HTTP_GZIP)
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if (r->gzip_vary) {
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if (clcf->gzip_vary) {
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/* Vary: Accept-Encoding */
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len += ngx_http_v3_encode_prefix_int(NULL, 59, 6);
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} else {
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r->gzip_vary = 0;
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}
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}
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#endif
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part = &r->headers_out.headers.part;
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header = part->elts;
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for (i = 0; /* void */; i++) {
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if (i >= part->nelts) {
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if (part->next == NULL) {
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break;
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}
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part = part->next;
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header = part->elts;
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i = 0;
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}
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if (header[i].hash == 0) {
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continue;
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}
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len += ngx_http_v3_encode_prefix_int(NULL, header[i].key.len, 3)
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+ header[i].key.len
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+ ngx_http_v3_encode_prefix_int(NULL, header[i].value.len, 7 )
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+ header[i].value.len;
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}
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 header len:%uz", len);
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b = ngx_create_temp_buf(r->pool, len);
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if (b == NULL) {
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return NULL;
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}
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*b->last++ = 0;
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*b->last++ = 0;
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if (r->headers_out.status == NGX_HTTP_OK) {
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/* :status: 200 */
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*b->last = 0xc0;
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b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 25, 6);
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} else {
|
|
/* :status: 200 */
|
|
*b->last = 0x70;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 25, 4);
|
|
*b->last = 0;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 3, 7);
|
|
b->last = ngx_sprintf(b->last, "%03ui", r->headers_out.status);
|
|
}
|
|
|
|
if (r->headers_out.server == NULL) {
|
|
if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_ON) {
|
|
p = (u_char *) NGINX_VER;
|
|
n = sizeof(NGINX_VER) - 1;
|
|
|
|
} else if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_BUILD) {
|
|
p = (u_char *) NGINX_VER_BUILD;
|
|
n = sizeof(NGINX_VER_BUILD) - 1;
|
|
|
|
} else {
|
|
p = (u_char *) "nginx";
|
|
n = sizeof("nginx") - 1;
|
|
}
|
|
|
|
/* server */
|
|
*b->last = 0x70;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 92, 4);
|
|
*b->last = 0;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, n, 7);
|
|
b->last = ngx_cpymem(b->last, p, n);
|
|
}
|
|
|
|
if (r->headers_out.date == NULL) {
|
|
/* date */
|
|
*b->last = 0x70;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 6, 4);
|
|
*b->last = 0;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last,
|
|
ngx_cached_http_time.len, 7);
|
|
b->last = ngx_cpymem(b->last, ngx_cached_http_time.data,
|
|
ngx_cached_http_time.len);
|
|
}
|
|
|
|
if (r->headers_out.content_type.len) {
|
|
n = r->headers_out.content_type.len;
|
|
|
|
if (r->headers_out.content_type_len == r->headers_out.content_type.len
|
|
&& r->headers_out.charset.len)
|
|
{
|
|
n += sizeof("; charset=") - 1 + r->headers_out.charset.len;
|
|
}
|
|
|
|
/* content-type: text/plain */
|
|
*b->last = 0x70;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 53, 4);
|
|
*b->last = 0;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, n, 7);
|
|
|
|
p = b->last;
|
|
b->last = ngx_copy(b->last, r->headers_out.content_type.data,
|
|
r->headers_out.content_type.len);
|
|
|
|
if (r->headers_out.content_type_len == r->headers_out.content_type.len
|
|
&& r->headers_out.charset.len)
|
|
{
|
|
b->last = ngx_cpymem(b->last, "; charset=",
|
|
sizeof("; charset=") - 1);
|
|
b->last = ngx_copy(b->last, r->headers_out.charset.data,
|
|
r->headers_out.charset.len);
|
|
|
|
/* update r->headers_out.content_type for possible logging */
|
|
|
|
r->headers_out.content_type.len = b->last - p;
|
|
r->headers_out.content_type.data = p;
|
|
}
|
|
}
|
|
|
|
if (r->headers_out.content_length_n > 0) {
|
|
/* content-length: 0 */
|
|
*b->last = 0x70;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 4, 4);
|
|
p = b->last++;
|
|
b->last = ngx_sprintf(b->last, "%O", r->headers_out.content_length_n);
|
|
*p = b->last - p - 1;
|
|
|
|
} else if (r->headers_out.content_length_n == 0) {
|
|
/* content-length: 0 */
|
|
*b->last = 0xc0;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 4, 6);
|
|
}
|
|
|
|
if (r->headers_out.last_modified == NULL
|
|
&& r->headers_out.last_modified_time != -1)
|
|
{
|
|
/* last-modified */
|
|
*b->last = 0x70;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 10, 4);
|
|
p = b->last++;
|
|
b->last = ngx_http_time(b->last, r->headers_out.last_modified_time);
|
|
*p = b->last - p - 1;
|
|
}
|
|
|
|
#if (NGX_HTTP_GZIP)
|
|
if (r->gzip_vary) {
|
|
/* vary: accept-encoding */
|
|
*b->last = 0xc0;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 59, 6);
|
|
}
|
|
#endif
|
|
|
|
part = &r->headers_out.headers.part;
|
|
header = part->elts;
|
|
|
|
for (i = 0; /* void */; i++) {
|
|
|
|
if (i >= part->nelts) {
|
|
if (part->next == NULL) {
|
|
break;
|
|
}
|
|
|
|
part = part->next;
|
|
header = part->elts;
|
|
i = 0;
|
|
}
|
|
|
|
if (header[i].hash == 0) {
|
|
continue;
|
|
}
|
|
|
|
*b->last = 0x30;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last,
|
|
header[i].key.len,
|
|
3);
|
|
for (j = 0; j < header[i].key.len; j++) {
|
|
*b->last++ = ngx_tolower(header[i].key.data[j]);
|
|
}
|
|
|
|
*b->last = 0;
|
|
b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last,
|
|
header[i].value.len,
|
|
7);
|
|
b->last = ngx_copy(b->last, header[i].value.data, header[i].value.len);
|
|
}
|
|
|
|
if (r->header_only) {
|
|
b->last_buf = 1;
|
|
}
|
|
|
|
cl = ngx_alloc_chain_link(c->pool);
|
|
if (cl == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
cl->buf = b;
|
|
cl->next = NULL;
|
|
|
|
n = b->last - b->pos;
|
|
|
|
len = 1 + ngx_http_v3_encode_varlen_int(NULL, n);
|
|
|
|
b = ngx_create_temp_buf(c->pool, len);
|
|
if (b == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
*b->last++ = NGX_HTTP_V3_FRAME_HEADERS;
|
|
b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last, n);
|
|
|
|
hl = ngx_alloc_chain_link(c->pool);
|
|
if (hl == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
hl->buf = b;
|
|
hl->next = cl;
|
|
|
|
if (r->headers_out.content_length_n >= 0 && !r->header_only) {
|
|
len = 1 + ngx_http_v3_encode_varlen_int(NULL,
|
|
r->headers_out.content_length_n);
|
|
|
|
b = ngx_create_temp_buf(c->pool, len);
|
|
if (b == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
*b->last++ = NGX_HTTP_V3_FRAME_DATA;
|
|
b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last,
|
|
r->headers_out.content_length_n);
|
|
|
|
bl = ngx_alloc_chain_link(c->pool);
|
|
if (bl == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
bl->buf = b;
|
|
bl->next = NULL;
|
|
cl->next = bl;
|
|
}
|
|
|
|
return hl;
|
|
}
|
|
|
|
|
|
ngx_chain_t *
|
|
ngx_http_v3_create_trailers(ngx_http_request_t *r)
|
|
{
|
|
ngx_buf_t *b;
|
|
ngx_chain_t *cl;
|
|
|
|
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
"http3 create trailers");
|
|
|
|
/* XXX */
|
|
|
|
b = ngx_calloc_buf(r->pool);
|
|
if (b == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
b->last_buf = 1;
|
|
|
|
cl = ngx_alloc_chain_link(r->pool);
|
|
if (cl == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
cl->buf = b;
|
|
cl->next = NULL;
|
|
|
|
return cl;
|
|
}
|