Mercurial > hg > nginx-quic
view src/http/v3/ngx_http_v3_request.c @ 7946:908cae4f3078 quic
HTTP/3: do not emit a DATA frame header for header_only responses.
This resulted in the frame error due to the invalid DATA frame length.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Thu, 25 Jun 2020 20:31:13 +0300 |
parents | 5b367070cc9c |
children | a6675a976560 |
line wrap: on
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/* * Copyright (C) Roman Arutyunyan * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> static ngx_int_t ngx_http_v3_process_pseudo_header(ngx_http_request_t *r, ngx_str_t *name, ngx_str_t *value); 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_int_t ngx_http_v3_parse_request(ngx_http_request_t *r, ngx_buf_t *b) { size_t len; u_char *p; ngx_int_t rc, n; ngx_str_t *name, *value; ngx_connection_t *c; ngx_http_v3_parse_headers_t *st; c = r->connection; st = r->h3_parse; if (st == NULL) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header"); st = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_parse_headers_t)); if (st == NULL) { goto failed; } r->h3_parse = st; r->parse_start = b->pos; r->state = 1; } while (b->pos < b->last) { rc = ngx_http_v3_parse_headers(c, st, *b->pos++); if (rc == NGX_ERROR) { goto failed; } if (rc == NGX_AGAIN) { continue; } name = &st->header_rep.header.name; value = &st->header_rep.header.value; n = ngx_http_v3_process_pseudo_header(r, name, value); if (n == NGX_ERROR) { goto failed; } if (n == NGX_OK && rc == NGX_OK) { continue; } len = (r->method_end - r->method_start) + 1 + (r->uri_end - r->uri_start) + 1 + sizeof("HTTP/3") - 1; p = ngx_pnalloc(c->pool, len); if (p == NULL) { goto failed; } r->request_start = p; p = ngx_cpymem(p, r->method_start, r->method_end - r->method_start); *p++ = ' '; p = ngx_cpymem(p, r->uri_start, r->uri_end - r->uri_start); *p++ = ' '; p = ngx_cpymem(p, "HTTP/3", sizeof("HTTP/3") - 1); r->request_end = p; return NGX_OK; } return NGX_AGAIN; failed: return NGX_HTTP_PARSE_INVALID_REQUEST; } ngx_int_t ngx_http_v3_parse_header(ngx_http_request_t *r, ngx_buf_t *b, ngx_uint_t allow_underscores) { u_char ch; ngx_int_t rc; ngx_str_t *name, *value; ngx_uint_t hash, i, n; ngx_connection_t *c; ngx_http_v3_parse_headers_t *st; c = r->connection; st = r->h3_parse; if (st->header_rep.state == 0) { r->parse_start = b->pos; r->invalid_header = 0; } if (st->state == 0) { if (r->header_name_start == NULL) { name = &st->header_rep.header.name; if (name->len && name->data[0] != ':') { goto done; } } ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header done"); return NGX_HTTP_PARSE_HEADER_DONE; } while (b->pos < b->last) { rc = ngx_http_v3_parse_headers(c, st, *b->pos++); if (rc == NGX_ERROR) { return NGX_HTTP_PARSE_INVALID_HEADER; } if (rc != NGX_AGAIN) { goto done; } } return NGX_AGAIN; done: name = &st->header_rep.header.name; value = &st->header_rep.header.value; r->header_name_start = name->data; r->header_name_end = name->data + name->len; r->header_start = value->data; r->header_end = value->data + value->len; hash = 0; i = 0; for (n = 0; n < name->len; n++) { ch = name->data[n]; if (ch >= 'A' && ch <= 'Z') { /* * A request or response containing uppercase * header field names MUST be treated as malformed */ return NGX_HTTP_PARSE_INVALID_HEADER; } if (ch == '\0') { return NGX_HTTP_PARSE_INVALID_HEADER; } if (ch == '_' && !allow_underscores) { r->invalid_header = 1; continue; } if ((ch < 'a' || ch > 'z') && (ch < '0' || ch > '9') && ch != '-' && ch != '_') { r->invalid_header = 1; continue; } hash = ngx_hash(hash, ch); r->lowcase_header[i++] = ch; i &= (NGX_HTTP_LC_HEADER_LEN - 1); } r->header_hash = hash; r->lowcase_index = i; 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) { ngx_uint_t i; ngx_connection_t *c; if (name->len == 0 || name->data[0] != ':') { return NGX_DONE; } c = r->connection; if (name->len == 7 && ngx_strncmp(name->data, ":method", 7) == 0) { r->method_start = value->data; r->method_end = value->data + value->len; 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; } } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 method \"%V\" %ui", value, r->method); return NGX_OK; } if (name->len == 5 && ngx_strncmp(name->data, ":path", 5) == 0) { 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, c->log, 0, "client sent invalid :path header: \"%V\"", value); return NGX_ERROR; } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 path \"%V\"", value); return NGX_OK; } if (name->len == 7 && ngx_strncmp(name->data, ":scheme", 7) == 0) { r->schema_start = value->data; r->schema_end = value->data + value->len; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 schema \"%V\"", value); return NGX_OK; } if (name->len == 10 && ngx_strncmp(name->data, ":authority", 10) == 0) { r->host_start = value->data; r->host_end = value->data + value->len; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 authority \"%V\"", value); return NGX_OK; } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 unknown pseudo header \"%V\" \"%V\"", name, value); return NGX_OK; } ngx_int_t ngx_http_v3_parse_request_body(ngx_http_request_t *r, ngx_buf_t *b, ngx_http_chunked_t *ctx) { ngx_int_t rc; ngx_connection_t *c; ngx_http_v3_parse_data_t *st; c = r->connection; st = ctx->h3_parse; if (st == NULL) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse request body"); st = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_parse_data_t)); if (st == NULL) { goto failed; } r->h3_parse = st; } if (ctx->size) { ctx->length = ctx->size + 1; return (b->pos == b->last) ? NGX_AGAIN : NGX_OK; } while (b->pos < b->last) { rc = ngx_http_v3_parse_data(c, st, *b->pos++); if (rc == NGX_ERROR) { goto failed; } if (rc == NGX_AGAIN) { continue; } /* rc == NGX_DONE */ ctx->size = st->length; return NGX_OK; } if (!b->last_buf) { ctx->length = 1; return NGX_AGAIN; } if (st->state) { goto failed; } ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header done"); return NGX_DONE; failed: return NGX_ERROR; } ngx_chain_t * ngx_http_v3_create_header(ngx_http_request_t *r) { u_char *p; size_t len, n; ngx_buf_t *b; ngx_uint_t i, j; ngx_chain_t *hl, *cl, *bl; ngx_list_part_t *part; ngx_table_elt_t *header; ngx_connection_t *c; ngx_http_core_loc_conf_t *clcf; c = r->connection; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 create header"); len = 2; if (r->headers_out.status == NGX_HTTP_OK) { len += ngx_http_v3_encode_prefix_int(NULL, 25, 6); } else { len += 3 + ngx_http_v3_encode_prefix_int(NULL, 25, 4) + ngx_http_v3_encode_prefix_int(NULL, 3, 7); } clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); if (r->headers_out.server == NULL) { if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_ON) { n = sizeof(NGINX_VER) - 1; } else if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_BUILD) { n = sizeof(NGINX_VER_BUILD) - 1; } else { n = sizeof("nginx") - 1; } len += ngx_http_v3_encode_prefix_int(NULL, 92, 4) + ngx_http_v3_encode_prefix_int(NULL, n, 7) + n; } if (r->headers_out.date == NULL) { len += ngx_http_v3_encode_prefix_int(NULL, 6, 4) + ngx_http_v3_encode_prefix_int(NULL, ngx_cached_http_time.len, 7) + 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; } len += ngx_http_v3_encode_prefix_int(NULL, 53, 4) + ngx_http_v3_encode_prefix_int(NULL, n, 7) + n; } if (r->headers_out.content_length_n > 0) { len += ngx_http_v3_encode_prefix_int(NULL, 4, 4) + 1 + NGX_OFF_T_LEN; } else if (r->headers_out.content_length_n == 0) { len += ngx_http_v3_encode_prefix_int(NULL, 4, 6); } if (r->headers_out.last_modified == NULL && r->headers_out.last_modified_time != -1) { len += ngx_http_v3_encode_prefix_int(NULL, 10, 4) + 1 + sizeof("Last-Modified: Mon, 28 Sep 1970 06:00:00 GMT"); } /* XXX location */ #if (NGX_HTTP_GZIP) if (r->gzip_vary) { if (clcf->gzip_vary) { /* Vary: Accept-Encoding */ len += ngx_http_v3_encode_prefix_int(NULL, 59, 6); } else { r->gzip_vary = 0; } } #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; } len += ngx_http_v3_encode_prefix_int(NULL, header[i].key.len, 3) + header[i].key.len + ngx_http_v3_encode_prefix_int(NULL, header[i].value.len, 7 ) + header[i].value.len; } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 header len:%uz", len); b = ngx_create_temp_buf(r->pool, len); if (b == NULL) { return NULL; } *b->last++ = 0; *b->last++ = 0; if (r->headers_out.status == NGX_HTTP_OK) { /* :status: 200 */ *b->last = 0xc0; b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 25, 6); } 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; }