summaryrefslogtreecommitdiffstats
path: root/lib/nghttp2_http.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--lib/nghttp2_http.c1291
1 files changed, 1291 insertions, 0 deletions
diff --git a/lib/nghttp2_http.c b/lib/nghttp2_http.c
new file mode 100644
index 0000000..83e5e66
--- /dev/null
+++ b/lib/nghttp2_http.c
@@ -0,0 +1,1291 @@
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2015 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_http.h"
+
+#include <string.h>
+#include <assert.h>
+#include <stdio.h>
+
+#include "nghttp2_hd.h"
+#include "nghttp2_helper.h"
+#include "nghttp2_extpri.h"
+
+static uint8_t downcase(uint8_t c) {
+ return 'A' <= c && c <= 'Z' ? (uint8_t)(c - 'A' + 'a') : c;
+}
+
+static int memieq(const void *a, const void *b, size_t n) {
+ size_t i;
+ const uint8_t *aa = a, *bb = b;
+
+ for (i = 0; i < n; ++i) {
+ if (downcase(aa[i]) != downcase(bb[i])) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+#define lstrieq(A, B, N) ((sizeof((A)) - 1) == (N) && memieq((A), (B), (N)))
+
+static int64_t parse_uint(const uint8_t *s, size_t len) {
+ int64_t n = 0;
+ size_t i;
+ if (len == 0) {
+ return -1;
+ }
+ for (i = 0; i < len; ++i) {
+ if ('0' <= s[i] && s[i] <= '9') {
+ if (n > INT64_MAX / 10) {
+ return -1;
+ }
+ n *= 10;
+ if (n > INT64_MAX - (s[i] - '0')) {
+ return -1;
+ }
+ n += s[i] - '0';
+ continue;
+ }
+ return -1;
+ }
+ return n;
+}
+
+static int check_pseudo_header(nghttp2_stream *stream, const nghttp2_hd_nv *nv,
+ uint32_t flag) {
+ if ((stream->http_flags & flag) || nv->value->len == 0) {
+ return 0;
+ }
+ stream->http_flags = stream->http_flags | flag;
+ return 1;
+}
+
+static int expect_response_body(nghttp2_stream *stream) {
+ return (stream->http_flags & NGHTTP2_HTTP_FLAG_METH_HEAD) == 0 &&
+ stream->status_code / 100 != 1 && stream->status_code != 304 &&
+ stream->status_code != 204;
+}
+
+/* For "http" or "https" URIs, OPTIONS request may have "*" in :path
+ header field to represent system-wide OPTIONS request. Otherwise,
+ :path header field value must start with "/". This function must
+ be called after ":method" header field was received. This function
+ returns nonzero if path is valid.*/
+static int check_path(nghttp2_stream *stream) {
+ return (stream->http_flags & NGHTTP2_HTTP_FLAG_SCHEME_HTTP) == 0 ||
+ ((stream->http_flags & NGHTTP2_HTTP_FLAG_PATH_REGULAR) ||
+ ((stream->http_flags & NGHTTP2_HTTP_FLAG_METH_OPTIONS) &&
+ (stream->http_flags & NGHTTP2_HTTP_FLAG_PATH_ASTERISK)));
+}
+
+static int http_request_on_header(nghttp2_stream *stream, nghttp2_hd_nv *nv,
+ int trailer, int connect_protocol) {
+ nghttp2_extpri extpri;
+
+ if (nv->name->base[0] == ':') {
+ if (trailer ||
+ (stream->http_flags & NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+
+ switch (nv->token) {
+ case NGHTTP2_TOKEN__AUTHORITY:
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__AUTHORITY)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ case NGHTTP2_TOKEN__METHOD:
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__METHOD)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ switch (nv->value->len) {
+ case 4:
+ if (lstreq("HEAD", nv->value->base, nv->value->len)) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_HEAD;
+ }
+ break;
+ case 7:
+ switch (nv->value->base[6]) {
+ case 'T':
+ if (lstreq("CONNECT", nv->value->base, nv->value->len)) {
+ if (stream->stream_id % 2 == 0) {
+ /* we won't allow CONNECT for push */
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_CONNECT;
+ }
+ break;
+ case 'S':
+ if (lstreq("OPTIONS", nv->value->base, nv->value->len)) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_OPTIONS;
+ }
+ break;
+ }
+ break;
+ }
+ break;
+ case NGHTTP2_TOKEN__PATH:
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__PATH)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ if (nv->value->base[0] == '/') {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PATH_REGULAR;
+ } else if (nv->value->len == 1 && nv->value->base[0] == '*') {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PATH_ASTERISK;
+ }
+ break;
+ case NGHTTP2_TOKEN__SCHEME:
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__SCHEME)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ if ((nv->value->len == 4 && memieq("http", nv->value->base, 4)) ||
+ (nv->value->len == 5 && memieq("https", nv->value->base, 5))) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_SCHEME_HTTP;
+ }
+ break;
+ case NGHTTP2_TOKEN__PROTOCOL:
+ if (!connect_protocol) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__PROTOCOL)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ case NGHTTP2_TOKEN_HOST:
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG_HOST)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ case NGHTTP2_TOKEN_CONTENT_LENGTH: {
+ if (stream->content_length != -1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ stream->content_length = parse_uint(nv->value->base, nv->value->len);
+ if (stream->content_length == -1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ }
+ /* disallowed header fields */
+ case NGHTTP2_TOKEN_CONNECTION:
+ case NGHTTP2_TOKEN_KEEP_ALIVE:
+ case NGHTTP2_TOKEN_PROXY_CONNECTION:
+ case NGHTTP2_TOKEN_TRANSFER_ENCODING:
+ case NGHTTP2_TOKEN_UPGRADE:
+ return NGHTTP2_ERR_HTTP_HEADER;
+ case NGHTTP2_TOKEN_TE:
+ if (!lstrieq("trailers", nv->value->base, nv->value->len)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ case NGHTTP2_TOKEN_PRIORITY:
+ if (!trailer &&
+ /* Do not parse the header field in PUSH_PROMISE. */
+ (stream->stream_id & 1) &&
+ (stream->flags & NGHTTP2_STREAM_FLAG_NO_RFC7540_PRIORITIES) &&
+ !(stream->http_flags & NGHTTP2_HTTP_FLAG_BAD_PRIORITY)) {
+ nghttp2_extpri_from_uint8(&extpri, stream->http_extpri);
+ if (nghttp2_http_parse_priority(&extpri, nv->value->base,
+ nv->value->len) == 0) {
+ stream->http_extpri = nghttp2_extpri_to_uint8(&extpri);
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PRIORITY;
+ } else {
+ stream->http_flags &= (uint32_t)~NGHTTP2_HTTP_FLAG_PRIORITY;
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_BAD_PRIORITY;
+ }
+ }
+ break;
+ default:
+ if (nv->name->base[0] == ':') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+
+ if (nv->name->base[0] != ':') {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
+ }
+
+ return 0;
+}
+
+static int http_response_on_header(nghttp2_stream *stream, nghttp2_hd_nv *nv,
+ int trailer) {
+ if (nv->name->base[0] == ':') {
+ if (trailer ||
+ (stream->http_flags & NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+
+ switch (nv->token) {
+ case NGHTTP2_TOKEN__STATUS: {
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__STATUS)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ if (nv->value->len != 3) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ stream->status_code = (int16_t)parse_uint(nv->value->base, nv->value->len);
+ if (stream->status_code == -1 || stream->status_code == 101) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ }
+ case NGHTTP2_TOKEN_CONTENT_LENGTH: {
+ if (stream->status_code == 204) {
+ /* content-length header field in 204 response is prohibited by
+ RFC 7230. But some widely used servers send content-length:
+ 0. Until they get fixed, we ignore it. */
+ if (stream->content_length != -1) {
+ /* Found multiple content-length field */
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ if (!lstrieq("0", nv->value->base, nv->value->len)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ stream->content_length = 0;
+ return NGHTTP2_ERR_REMOVE_HTTP_HEADER;
+ }
+ if (stream->status_code / 100 == 1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ /* https://tools.ietf.org/html/rfc7230#section-3.3.3 */
+ if (stream->status_code / 100 == 2 &&
+ (stream->http_flags & NGHTTP2_HTTP_FLAG_METH_CONNECT)) {
+ return NGHTTP2_ERR_REMOVE_HTTP_HEADER;
+ }
+ if (stream->content_length != -1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ stream->content_length = parse_uint(nv->value->base, nv->value->len);
+ if (stream->content_length == -1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ }
+ /* disallowed header fields */
+ case NGHTTP2_TOKEN_CONNECTION:
+ case NGHTTP2_TOKEN_KEEP_ALIVE:
+ case NGHTTP2_TOKEN_PROXY_CONNECTION:
+ case NGHTTP2_TOKEN_TRANSFER_ENCODING:
+ case NGHTTP2_TOKEN_UPGRADE:
+ return NGHTTP2_ERR_HTTP_HEADER;
+ case NGHTTP2_TOKEN_TE:
+ if (!lstrieq("trailers", nv->value->base, nv->value->len)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ default:
+ if (nv->name->base[0] == ':') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+
+ if (nv->name->base[0] != ':') {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
+ }
+
+ return 0;
+}
+
+static int check_scheme(const uint8_t *value, size_t len) {
+ const uint8_t *last;
+ if (len == 0) {
+ return 0;
+ }
+
+ if (!(('A' <= *value && *value <= 'Z') || ('a' <= *value && *value <= 'z'))) {
+ return 0;
+ }
+
+ last = value + len;
+ ++value;
+
+ for (; value != last; ++value) {
+ if (!(('A' <= *value && *value <= 'Z') ||
+ ('a' <= *value && *value <= 'z') ||
+ ('0' <= *value && *value <= '9') || *value == '+' || *value == '-' ||
+ *value == '.')) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static int lws(const uint8_t *s, size_t n) {
+ size_t i;
+ for (i = 0; i < n; ++i) {
+ if (s[i] != ' ' && s[i] != '\t') {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+int nghttp2_http_on_header(nghttp2_session *session, nghttp2_stream *stream,
+ nghttp2_frame *frame, nghttp2_hd_nv *nv,
+ int trailer) {
+ int rv;
+
+ /* We are strict for pseudo header field. One bad character should
+ lead to fail. OTOH, we should be a bit forgiving for regular
+ headers, since existing public internet has so much illegal
+ headers floating around and if we kill the stream because of
+ this, we may disrupt many web sites and/or libraries. So we
+ become conservative here, and just ignore those illegal regular
+ headers. */
+ if (!nghttp2_check_header_name(nv->name->base, nv->name->len)) {
+ size_t i;
+ if (nv->name->len > 0 && nv->name->base[0] == ':') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ /* header field name must be lower-cased without exception */
+ for (i = 0; i < nv->name->len; ++i) {
+ uint8_t c = nv->name->base[i];
+ if ('A' <= c && c <= 'Z') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+ /* When ignoring regular headers, we set this flag so that we
+ still enforce header field ordering rule for pseudo header
+ fields. */
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
+ return NGHTTP2_ERR_IGN_HTTP_HEADER;
+ }
+
+ switch (nv->token) {
+ case NGHTTP2_TOKEN__METHOD:
+ rv = nghttp2_check_method(nv->value->base, nv->value->len);
+ break;
+ case NGHTTP2_TOKEN__PATH:
+ rv = nghttp2_check_path(nv->value->base, nv->value->len);
+ break;
+ case NGHTTP2_TOKEN__AUTHORITY:
+ case NGHTTP2_TOKEN_HOST:
+ if (session->server || frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+ rv = nghttp2_check_authority(nv->value->base, nv->value->len);
+ } else if (
+ stream->flags &
+ NGHTTP2_STREAM_FLAG_NO_RFC9113_LEADING_AND_TRAILING_WS_VALIDATION) {
+ rv = nghttp2_check_header_value(nv->value->base, nv->value->len);
+ } else {
+ rv = nghttp2_check_header_value_rfc9113(nv->value->base, nv->value->len);
+ }
+ break;
+ case NGHTTP2_TOKEN__SCHEME:
+ rv = check_scheme(nv->value->base, nv->value->len);
+ break;
+ case NGHTTP2_TOKEN__PROTOCOL:
+ /* Check the value consists of just white spaces, which was done
+ in check_pseudo_header before
+ nghttp2_check_header_value_rfc9113 has been introduced. */
+ if ((stream->flags &
+ NGHTTP2_STREAM_FLAG_NO_RFC9113_LEADING_AND_TRAILING_WS_VALIDATION) &&
+ lws(nv->value->base, nv->value->len)) {
+ rv = 0;
+ break;
+ }
+ /* fall through */
+ default:
+ if (stream->flags &
+ NGHTTP2_STREAM_FLAG_NO_RFC9113_LEADING_AND_TRAILING_WS_VALIDATION) {
+ rv = nghttp2_check_header_value(nv->value->base, nv->value->len);
+ } else {
+ rv = nghttp2_check_header_value_rfc9113(nv->value->base, nv->value->len);
+ }
+ }
+
+ if (rv == 0) {
+ assert(nv->name->len > 0);
+ if (nv->name->base[0] == ':') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ /* When ignoring regular headers, we set this flag so that we
+ still enforce header field ordering rule for pseudo header
+ fields. */
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
+ return NGHTTP2_ERR_IGN_HTTP_HEADER;
+ }
+
+ if (session->server || frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+ return http_request_on_header(stream, nv, trailer,
+ session->server &&
+ session->pending_enable_connect_protocol);
+ }
+
+ return http_response_on_header(stream, nv, trailer);
+}
+
+int nghttp2_http_on_request_headers(nghttp2_stream *stream,
+ nghttp2_frame *frame) {
+ if (!(stream->http_flags & NGHTTP2_HTTP_FLAG__PROTOCOL) &&
+ (stream->http_flags & NGHTTP2_HTTP_FLAG_METH_CONNECT)) {
+ if ((stream->http_flags &
+ (NGHTTP2_HTTP_FLAG__SCHEME | NGHTTP2_HTTP_FLAG__PATH)) ||
+ (stream->http_flags & NGHTTP2_HTTP_FLAG__AUTHORITY) == 0) {
+ return -1;
+ }
+ stream->content_length = -1;
+ } else {
+ if ((stream->http_flags & NGHTTP2_HTTP_FLAG_REQ_HEADERS) !=
+ NGHTTP2_HTTP_FLAG_REQ_HEADERS ||
+ (stream->http_flags &
+ (NGHTTP2_HTTP_FLAG__AUTHORITY | NGHTTP2_HTTP_FLAG_HOST)) == 0) {
+ return -1;
+ }
+ if ((stream->http_flags & NGHTTP2_HTTP_FLAG__PROTOCOL) &&
+ ((stream->http_flags & NGHTTP2_HTTP_FLAG_METH_CONNECT) == 0 ||
+ (stream->http_flags & NGHTTP2_HTTP_FLAG__AUTHORITY) == 0)) {
+ return -1;
+ }
+ if (!check_path(stream)) {
+ return -1;
+ }
+ }
+
+ if (frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+ /* we are going to reuse data fields for upcoming response. Clear
+ them now, except for method flags. */
+ stream->http_flags &= NGHTTP2_HTTP_FLAG_METH_ALL;
+ stream->content_length = -1;
+ }
+
+ return 0;
+}
+
+int nghttp2_http_on_response_headers(nghttp2_stream *stream) {
+ if ((stream->http_flags & NGHTTP2_HTTP_FLAG__STATUS) == 0) {
+ return -1;
+ }
+
+ if (stream->status_code / 100 == 1) {
+ /* non-final response */
+ stream->http_flags = (stream->http_flags & NGHTTP2_HTTP_FLAG_METH_ALL) |
+ NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE;
+ stream->content_length = -1;
+ stream->status_code = -1;
+ return 0;
+ }
+
+ stream->http_flags =
+ stream->http_flags & (uint32_t)~NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE;
+
+ if (!expect_response_body(stream)) {
+ stream->content_length = 0;
+ } else if (stream->http_flags & (NGHTTP2_HTTP_FLAG_METH_CONNECT |
+ NGHTTP2_HTTP_FLAG_METH_UPGRADE_WORKAROUND)) {
+ stream->content_length = -1;
+ }
+
+ return 0;
+}
+
+int nghttp2_http_on_trailer_headers(nghttp2_stream *stream,
+ nghttp2_frame *frame) {
+ (void)stream;
+
+ if ((frame->hd.flags & NGHTTP2_FLAG_END_STREAM) == 0) {
+ return -1;
+ }
+
+ return 0;
+}
+
+int nghttp2_http_on_remote_end_stream(nghttp2_stream *stream) {
+ if (stream->http_flags & NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE) {
+ return -1;
+ }
+
+ if (stream->content_length != -1 &&
+ stream->content_length != stream->recv_content_length) {
+ return -1;
+ }
+
+ return 0;
+}
+
+int nghttp2_http_on_data_chunk(nghttp2_stream *stream, size_t n) {
+ stream->recv_content_length += (int64_t)n;
+
+ if ((stream->http_flags & NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE) ||
+ (stream->content_length != -1 &&
+ stream->recv_content_length > stream->content_length)) {
+ return -1;
+ }
+
+ return 0;
+}
+
+void nghttp2_http_record_request_method(nghttp2_stream *stream,
+ nghttp2_frame *frame) {
+ const nghttp2_nv *nva;
+ size_t nvlen;
+ size_t i;
+
+ switch (frame->hd.type) {
+ case NGHTTP2_HEADERS:
+ nva = frame->headers.nva;
+ nvlen = frame->headers.nvlen;
+ break;
+ case NGHTTP2_PUSH_PROMISE:
+ nva = frame->push_promise.nva;
+ nvlen = frame->push_promise.nvlen;
+ break;
+ default:
+ return;
+ }
+
+ /* TODO we should do this strictly. */
+ for (i = 0; i < nvlen; ++i) {
+ const nghttp2_nv *nv = &nva[i];
+ if (!(nv->namelen == 7 && nv->name[6] == 'd' &&
+ memcmp(":metho", nv->name, nv->namelen - 1) == 0)) {
+ continue;
+ }
+ if (lstreq("CONNECT", nv->value, nv->valuelen)) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_CONNECT;
+ return;
+ }
+ if (lstreq("HEAD", nv->value, nv->valuelen)) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_HEAD;
+ return;
+ }
+ return;
+ }
+}
+
+/* Generated by genchartbl.py */
+static const int SF_KEY_CHARS[] = {
+ 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, 0 /* EOT */,
+ 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, 0 /* BS */, 0 /* HT */,
+ 0 /* LF */, 0 /* VT */, 0 /* FF */, 0 /* CR */, 0 /* SO */,
+ 0 /* SI */, 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */,
+ 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, 0 /* CAN */,
+ 0 /* EM */, 0 /* SUB */, 0 /* ESC */, 0 /* FS */, 0 /* GS */,
+ 0 /* RS */, 0 /* US */, 0 /* SPC */, 0 /* ! */, 0 /* " */,
+ 0 /* # */, 0 /* $ */, 0 /* % */, 0 /* & */, 0 /* ' */,
+ 0 /* ( */, 0 /* ) */, 1 /* * */, 0 /* + */, 0 /* , */,
+ 1 /* - */, 1 /* . */, 0 /* / */, 1 /* 0 */, 1 /* 1 */,
+ 1 /* 2 */, 1 /* 3 */, 1 /* 4 */, 1 /* 5 */, 1 /* 6 */,
+ 1 /* 7 */, 1 /* 8 */, 1 /* 9 */, 0 /* : */, 0 /* ; */,
+ 0 /* < */, 0 /* = */, 0 /* > */, 0 /* ? */, 0 /* @ */,
+ 0 /* A */, 0 /* B */, 0 /* C */, 0 /* D */, 0 /* E */,
+ 0 /* F */, 0 /* G */, 0 /* H */, 0 /* I */, 0 /* J */,
+ 0 /* K */, 0 /* L */, 0 /* M */, 0 /* N */, 0 /* O */,
+ 0 /* P */, 0 /* Q */, 0 /* R */, 0 /* S */, 0 /* T */,
+ 0 /* U */, 0 /* V */, 0 /* W */, 0 /* X */, 0 /* Y */,
+ 0 /* Z */, 0 /* [ */, 0 /* \ */, 0 /* ] */, 0 /* ^ */,
+ 1 /* _ */, 0 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */,
+ 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, 1 /* h */,
+ 1 /* i */, 1 /* j */, 1 /* k */, 1 /* l */, 1 /* m */,
+ 1 /* n */, 1 /* o */, 1 /* p */, 1 /* q */, 1 /* r */,
+ 1 /* s */, 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */,
+ 1 /* x */, 1 /* y */, 1 /* z */, 0 /* { */, 0 /* | */,
+ 0 /* } */, 0 /* ~ */, 0 /* DEL */, 0 /* 0x80 */, 0 /* 0x81 */,
+ 0 /* 0x82 */, 0 /* 0x83 */, 0 /* 0x84 */, 0 /* 0x85 */, 0 /* 0x86 */,
+ 0 /* 0x87 */, 0 /* 0x88 */, 0 /* 0x89 */, 0 /* 0x8a */, 0 /* 0x8b */,
+ 0 /* 0x8c */, 0 /* 0x8d */, 0 /* 0x8e */, 0 /* 0x8f */, 0 /* 0x90 */,
+ 0 /* 0x91 */, 0 /* 0x92 */, 0 /* 0x93 */, 0 /* 0x94 */, 0 /* 0x95 */,
+ 0 /* 0x96 */, 0 /* 0x97 */, 0 /* 0x98 */, 0 /* 0x99 */, 0 /* 0x9a */,
+ 0 /* 0x9b */, 0 /* 0x9c */, 0 /* 0x9d */, 0 /* 0x9e */, 0 /* 0x9f */,
+ 0 /* 0xa0 */, 0 /* 0xa1 */, 0 /* 0xa2 */, 0 /* 0xa3 */, 0 /* 0xa4 */,
+ 0 /* 0xa5 */, 0 /* 0xa6 */, 0 /* 0xa7 */, 0 /* 0xa8 */, 0 /* 0xa9 */,
+ 0 /* 0xaa */, 0 /* 0xab */, 0 /* 0xac */, 0 /* 0xad */, 0 /* 0xae */,
+ 0 /* 0xaf */, 0 /* 0xb0 */, 0 /* 0xb1 */, 0 /* 0xb2 */, 0 /* 0xb3 */,
+ 0 /* 0xb4 */, 0 /* 0xb5 */, 0 /* 0xb6 */, 0 /* 0xb7 */, 0 /* 0xb8 */,
+ 0 /* 0xb9 */, 0 /* 0xba */, 0 /* 0xbb */, 0 /* 0xbc */, 0 /* 0xbd */,
+ 0 /* 0xbe */, 0 /* 0xbf */, 0 /* 0xc0 */, 0 /* 0xc1 */, 0 /* 0xc2 */,
+ 0 /* 0xc3 */, 0 /* 0xc4 */, 0 /* 0xc5 */, 0 /* 0xc6 */, 0 /* 0xc7 */,
+ 0 /* 0xc8 */, 0 /* 0xc9 */, 0 /* 0xca */, 0 /* 0xcb */, 0 /* 0xcc */,
+ 0 /* 0xcd */, 0 /* 0xce */, 0 /* 0xcf */, 0 /* 0xd0 */, 0 /* 0xd1 */,
+ 0 /* 0xd2 */, 0 /* 0xd3 */, 0 /* 0xd4 */, 0 /* 0xd5 */, 0 /* 0xd6 */,
+ 0 /* 0xd7 */, 0 /* 0xd8 */, 0 /* 0xd9 */, 0 /* 0xda */, 0 /* 0xdb */,
+ 0 /* 0xdc */, 0 /* 0xdd */, 0 /* 0xde */, 0 /* 0xdf */, 0 /* 0xe0 */,
+ 0 /* 0xe1 */, 0 /* 0xe2 */, 0 /* 0xe3 */, 0 /* 0xe4 */, 0 /* 0xe5 */,
+ 0 /* 0xe6 */, 0 /* 0xe7 */, 0 /* 0xe8 */, 0 /* 0xe9 */, 0 /* 0xea */,
+ 0 /* 0xeb */, 0 /* 0xec */, 0 /* 0xed */, 0 /* 0xee */, 0 /* 0xef */,
+ 0 /* 0xf0 */, 0 /* 0xf1 */, 0 /* 0xf2 */, 0 /* 0xf3 */, 0 /* 0xf4 */,
+ 0 /* 0xf5 */, 0 /* 0xf6 */, 0 /* 0xf7 */, 0 /* 0xf8 */, 0 /* 0xf9 */,
+ 0 /* 0xfa */, 0 /* 0xfb */, 0 /* 0xfc */, 0 /* 0xfd */, 0 /* 0xfe */,
+ 0 /* 0xff */,
+};
+
+static ssize_t sf_parse_key(const uint8_t *begin, const uint8_t *end) {
+ const uint8_t *p = begin;
+
+ if ((*p < 'a' || 'z' < *p) && *p != '*') {
+ return -1;
+ }
+
+ for (; p != end && SF_KEY_CHARS[*p]; ++p)
+ ;
+
+ return p - begin;
+}
+
+static ssize_t sf_parse_integer_or_decimal(nghttp2_sf_value *dest,
+ const uint8_t *begin,
+ const uint8_t *end) {
+ const uint8_t *p = begin;
+ int sign = 1;
+ int64_t value = 0;
+ int type = NGHTTP2_SF_VALUE_TYPE_INTEGER;
+ size_t len = 0;
+ size_t fpos = 0;
+ size_t i;
+
+ if (*p == '-') {
+ if (++p == end) {
+ return -1;
+ }
+
+ sign = -1;
+ }
+
+ if (*p < '0' || '9' < *p) {
+ return -1;
+ }
+
+ for (; p != end; ++p) {
+ switch (*p) {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ value *= 10;
+ value += *p - '0';
+
+ if (++len > 15) {
+ return -1;
+ }
+
+ break;
+ case '.':
+ if (type != NGHTTP2_SF_VALUE_TYPE_INTEGER) {
+ goto fin;
+ }
+
+ if (len > 12) {
+ return -1;
+ }
+ fpos = len;
+ type = NGHTTP2_SF_VALUE_TYPE_DECIMAL;
+
+ break;
+ default:
+ goto fin;
+ };
+ }
+
+fin:
+ switch (type) {
+ case NGHTTP2_SF_VALUE_TYPE_INTEGER:
+ if (dest) {
+ dest->type = (uint8_t)type;
+ dest->i = value * sign;
+ }
+
+ return p - begin;
+ case NGHTTP2_SF_VALUE_TYPE_DECIMAL:
+ if (fpos == len || len - fpos > 3) {
+ return -1;
+ }
+
+ if (dest) {
+ dest->type = (uint8_t)type;
+ dest->d = (double)value;
+ for (i = len - fpos; i > 0; --i) {
+ dest->d /= (double)10;
+ }
+ dest->d *= sign;
+ }
+
+ return p - begin;
+ default:
+ assert(0);
+ abort();
+ }
+}
+
+/* Generated by genchartbl.py */
+static const int SF_DQUOTE_CHARS[] = {
+ 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, 0 /* EOT */,
+ 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, 0 /* BS */, 0 /* HT */,
+ 0 /* LF */, 0 /* VT */, 0 /* FF */, 0 /* CR */, 0 /* SO */,
+ 0 /* SI */, 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */,
+ 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, 0 /* CAN */,
+ 0 /* EM */, 0 /* SUB */, 0 /* ESC */, 0 /* FS */, 0 /* GS */,
+ 0 /* RS */, 0 /* US */, 1 /* SPC */, 1 /* ! */, 0 /* " */,
+ 1 /* # */, 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */,
+ 1 /* ( */, 1 /* ) */, 1 /* * */, 1 /* + */, 1 /* , */,
+ 1 /* - */, 1 /* . */, 1 /* / */, 1 /* 0 */, 1 /* 1 */,
+ 1 /* 2 */, 1 /* 3 */, 1 /* 4 */, 1 /* 5 */, 1 /* 6 */,
+ 1 /* 7 */, 1 /* 8 */, 1 /* 9 */, 1 /* : */, 1 /* ; */,
+ 1 /* < */, 1 /* = */, 1 /* > */, 1 /* ? */, 1 /* @ */,
+ 1 /* A */, 1 /* B */, 1 /* C */, 1 /* D */, 1 /* E */,
+ 1 /* F */, 1 /* G */, 1 /* H */, 1 /* I */, 1 /* J */,
+ 1 /* K */, 1 /* L */, 1 /* M */, 1 /* N */, 1 /* O */,
+ 1 /* P */, 1 /* Q */, 1 /* R */, 1 /* S */, 1 /* T */,
+ 1 /* U */, 1 /* V */, 1 /* W */, 1 /* X */, 1 /* Y */,
+ 1 /* Z */, 1 /* [ */, 0 /* \ */, 1 /* ] */, 1 /* ^ */,
+ 1 /* _ */, 1 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */,
+ 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, 1 /* h */,
+ 1 /* i */, 1 /* j */, 1 /* k */, 1 /* l */, 1 /* m */,
+ 1 /* n */, 1 /* o */, 1 /* p */, 1 /* q */, 1 /* r */,
+ 1 /* s */, 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */,
+ 1 /* x */, 1 /* y */, 1 /* z */, 1 /* { */, 1 /* | */,
+ 1 /* } */, 1 /* ~ */, 0 /* DEL */, 0 /* 0x80 */, 0 /* 0x81 */,
+ 0 /* 0x82 */, 0 /* 0x83 */, 0 /* 0x84 */, 0 /* 0x85 */, 0 /* 0x86 */,
+ 0 /* 0x87 */, 0 /* 0x88 */, 0 /* 0x89 */, 0 /* 0x8a */, 0 /* 0x8b */,
+ 0 /* 0x8c */, 0 /* 0x8d */, 0 /* 0x8e */, 0 /* 0x8f */, 0 /* 0x90 */,
+ 0 /* 0x91 */, 0 /* 0x92 */, 0 /* 0x93 */, 0 /* 0x94 */, 0 /* 0x95 */,
+ 0 /* 0x96 */, 0 /* 0x97 */, 0 /* 0x98 */, 0 /* 0x99 */, 0 /* 0x9a */,
+ 0 /* 0x9b */, 0 /* 0x9c */, 0 /* 0x9d */, 0 /* 0x9e */, 0 /* 0x9f */,
+ 0 /* 0xa0 */, 0 /* 0xa1 */, 0 /* 0xa2 */, 0 /* 0xa3 */, 0 /* 0xa4 */,
+ 0 /* 0xa5 */, 0 /* 0xa6 */, 0 /* 0xa7 */, 0 /* 0xa8 */, 0 /* 0xa9 */,
+ 0 /* 0xaa */, 0 /* 0xab */, 0 /* 0xac */, 0 /* 0xad */, 0 /* 0xae */,
+ 0 /* 0xaf */, 0 /* 0xb0 */, 0 /* 0xb1 */, 0 /* 0xb2 */, 0 /* 0xb3 */,
+ 0 /* 0xb4 */, 0 /* 0xb5 */, 0 /* 0xb6 */, 0 /* 0xb7 */, 0 /* 0xb8 */,
+ 0 /* 0xb9 */, 0 /* 0xba */, 0 /* 0xbb */, 0 /* 0xbc */, 0 /* 0xbd */,
+ 0 /* 0xbe */, 0 /* 0xbf */, 0 /* 0xc0 */, 0 /* 0xc1 */, 0 /* 0xc2 */,
+ 0 /* 0xc3 */, 0 /* 0xc4 */, 0 /* 0xc5 */, 0 /* 0xc6 */, 0 /* 0xc7 */,
+ 0 /* 0xc8 */, 0 /* 0xc9 */, 0 /* 0xca */, 0 /* 0xcb */, 0 /* 0xcc */,
+ 0 /* 0xcd */, 0 /* 0xce */, 0 /* 0xcf */, 0 /* 0xd0 */, 0 /* 0xd1 */,
+ 0 /* 0xd2 */, 0 /* 0xd3 */, 0 /* 0xd4 */, 0 /* 0xd5 */, 0 /* 0xd6 */,
+ 0 /* 0xd7 */, 0 /* 0xd8 */, 0 /* 0xd9 */, 0 /* 0xda */, 0 /* 0xdb */,
+ 0 /* 0xdc */, 0 /* 0xdd */, 0 /* 0xde */, 0 /* 0xdf */, 0 /* 0xe0 */,
+ 0 /* 0xe1 */, 0 /* 0xe2 */, 0 /* 0xe3 */, 0 /* 0xe4 */, 0 /* 0xe5 */,
+ 0 /* 0xe6 */, 0 /* 0xe7 */, 0 /* 0xe8 */, 0 /* 0xe9 */, 0 /* 0xea */,
+ 0 /* 0xeb */, 0 /* 0xec */, 0 /* 0xed */, 0 /* 0xee */, 0 /* 0xef */,
+ 0 /* 0xf0 */, 0 /* 0xf1 */, 0 /* 0xf2 */, 0 /* 0xf3 */, 0 /* 0xf4 */,
+ 0 /* 0xf5 */, 0 /* 0xf6 */, 0 /* 0xf7 */, 0 /* 0xf8 */, 0 /* 0xf9 */,
+ 0 /* 0xfa */, 0 /* 0xfb */, 0 /* 0xfc */, 0 /* 0xfd */, 0 /* 0xfe */,
+ 0 /* 0xff */,
+};
+
+static ssize_t sf_parse_string(nghttp2_sf_value *dest, const uint8_t *begin,
+ const uint8_t *end) {
+ const uint8_t *p = begin;
+
+ if (*p++ != '"') {
+ return -1;
+ }
+
+ for (; p != end; ++p) {
+ switch (*p) {
+ case '\\':
+ if (++p == end) {
+ return -1;
+ }
+
+ switch (*p) {
+ case '"':
+ case '\\':
+ break;
+ default:
+ return -1;
+ }
+
+ break;
+ case '"':
+ if (dest) {
+ dest->type = NGHTTP2_SF_VALUE_TYPE_STRING;
+ dest->s.base = begin + 1;
+ dest->s.len = (size_t)(p - dest->s.base);
+ }
+
+ ++p;
+
+ return p - begin;
+ default:
+ if (!SF_DQUOTE_CHARS[*p]) {
+ return -1;
+ }
+ }
+ }
+
+ return -1;
+}
+
+/* Generated by genchartbl.py */
+static const int SF_TOKEN_CHARS[] = {
+ 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, 0 /* EOT */,
+ 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, 0 /* BS */, 0 /* HT */,
+ 0 /* LF */, 0 /* VT */, 0 /* FF */, 0 /* CR */, 0 /* SO */,
+ 0 /* SI */, 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */,
+ 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, 0 /* CAN */,
+ 0 /* EM */, 0 /* SUB */, 0 /* ESC */, 0 /* FS */, 0 /* GS */,
+ 0 /* RS */, 0 /* US */, 0 /* SPC */, 1 /* ! */, 0 /* " */,
+ 1 /* # */, 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */,
+ 0 /* ( */, 0 /* ) */, 1 /* * */, 1 /* + */, 0 /* , */,
+ 1 /* - */, 1 /* . */, 1 /* / */, 1 /* 0 */, 1 /* 1 */,
+ 1 /* 2 */, 1 /* 3 */, 1 /* 4 */, 1 /* 5 */, 1 /* 6 */,
+ 1 /* 7 */, 1 /* 8 */, 1 /* 9 */, 1 /* : */, 0 /* ; */,
+ 0 /* < */, 0 /* = */, 0 /* > */, 0 /* ? */, 0 /* @ */,
+ 1 /* A */, 1 /* B */, 1 /* C */, 1 /* D */, 1 /* E */,
+ 1 /* F */, 1 /* G */, 1 /* H */, 1 /* I */, 1 /* J */,
+ 1 /* K */, 1 /* L */, 1 /* M */, 1 /* N */, 1 /* O */,
+ 1 /* P */, 1 /* Q */, 1 /* R */, 1 /* S */, 1 /* T */,
+ 1 /* U */, 1 /* V */, 1 /* W */, 1 /* X */, 1 /* Y */,
+ 1 /* Z */, 0 /* [ */, 0 /* \ */, 0 /* ] */, 1 /* ^ */,
+ 1 /* _ */, 1 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */,
+ 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, 1 /* h */,
+ 1 /* i */, 1 /* j */, 1 /* k */, 1 /* l */, 1 /* m */,
+ 1 /* n */, 1 /* o */, 1 /* p */, 1 /* q */, 1 /* r */,
+ 1 /* s */, 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */,
+ 1 /* x */, 1 /* y */, 1 /* z */, 0 /* { */, 1 /* | */,
+ 0 /* } */, 1 /* ~ */, 0 /* DEL */, 0 /* 0x80 */, 0 /* 0x81 */,
+ 0 /* 0x82 */, 0 /* 0x83 */, 0 /* 0x84 */, 0 /* 0x85 */, 0 /* 0x86 */,
+ 0 /* 0x87 */, 0 /* 0x88 */, 0 /* 0x89 */, 0 /* 0x8a */, 0 /* 0x8b */,
+ 0 /* 0x8c */, 0 /* 0x8d */, 0 /* 0x8e */, 0 /* 0x8f */, 0 /* 0x90 */,
+ 0 /* 0x91 */, 0 /* 0x92 */, 0 /* 0x93 */, 0 /* 0x94 */, 0 /* 0x95 */,
+ 0 /* 0x96 */, 0 /* 0x97 */, 0 /* 0x98 */, 0 /* 0x99 */, 0 /* 0x9a */,
+ 0 /* 0x9b */, 0 /* 0x9c */, 0 /* 0x9d */, 0 /* 0x9e */, 0 /* 0x9f */,
+ 0 /* 0xa0 */, 0 /* 0xa1 */, 0 /* 0xa2 */, 0 /* 0xa3 */, 0 /* 0xa4 */,
+ 0 /* 0xa5 */, 0 /* 0xa6 */, 0 /* 0xa7 */, 0 /* 0xa8 */, 0 /* 0xa9 */,
+ 0 /* 0xaa */, 0 /* 0xab */, 0 /* 0xac */, 0 /* 0xad */, 0 /* 0xae */,
+ 0 /* 0xaf */, 0 /* 0xb0 */, 0 /* 0xb1 */, 0 /* 0xb2 */, 0 /* 0xb3 */,
+ 0 /* 0xb4 */, 0 /* 0xb5 */, 0 /* 0xb6 */, 0 /* 0xb7 */, 0 /* 0xb8 */,
+ 0 /* 0xb9 */, 0 /* 0xba */, 0 /* 0xbb */, 0 /* 0xbc */, 0 /* 0xbd */,
+ 0 /* 0xbe */, 0 /* 0xbf */, 0 /* 0xc0 */, 0 /* 0xc1 */, 0 /* 0xc2 */,
+ 0 /* 0xc3 */, 0 /* 0xc4 */, 0 /* 0xc5 */, 0 /* 0xc6 */, 0 /* 0xc7 */,
+ 0 /* 0xc8 */, 0 /* 0xc9 */, 0 /* 0xca */, 0 /* 0xcb */, 0 /* 0xcc */,
+ 0 /* 0xcd */, 0 /* 0xce */, 0 /* 0xcf */, 0 /* 0xd0 */, 0 /* 0xd1 */,
+ 0 /* 0xd2 */, 0 /* 0xd3 */, 0 /* 0xd4 */, 0 /* 0xd5 */, 0 /* 0xd6 */,
+ 0 /* 0xd7 */, 0 /* 0xd8 */, 0 /* 0xd9 */, 0 /* 0xda */, 0 /* 0xdb */,
+ 0 /* 0xdc */, 0 /* 0xdd */, 0 /* 0xde */, 0 /* 0xdf */, 0 /* 0xe0 */,
+ 0 /* 0xe1 */, 0 /* 0xe2 */, 0 /* 0xe3 */, 0 /* 0xe4 */, 0 /* 0xe5 */,
+ 0 /* 0xe6 */, 0 /* 0xe7 */, 0 /* 0xe8 */, 0 /* 0xe9 */, 0 /* 0xea */,
+ 0 /* 0xeb */, 0 /* 0xec */, 0 /* 0xed */, 0 /* 0xee */, 0 /* 0xef */,
+ 0 /* 0xf0 */, 0 /* 0xf1 */, 0 /* 0xf2 */, 0 /* 0xf3 */, 0 /* 0xf4 */,
+ 0 /* 0xf5 */, 0 /* 0xf6 */, 0 /* 0xf7 */, 0 /* 0xf8 */, 0 /* 0xf9 */,
+ 0 /* 0xfa */, 0 /* 0xfb */, 0 /* 0xfc */, 0 /* 0xfd */, 0 /* 0xfe */,
+ 0 /* 0xff */,
+};
+
+static ssize_t sf_parse_token(nghttp2_sf_value *dest, const uint8_t *begin,
+ const uint8_t *end) {
+ const uint8_t *p = begin;
+
+ if ((*p < 'A' || 'Z' < *p) && (*p < 'a' || 'z' < *p) && *p != '*') {
+ return -1;
+ }
+
+ for (; p != end && SF_TOKEN_CHARS[*p]; ++p)
+ ;
+
+ if (dest) {
+ dest->type = NGHTTP2_SF_VALUE_TYPE_TOKEN;
+ dest->s.base = begin;
+ dest->s.len = (size_t)(p - begin);
+ }
+
+ return p - begin;
+}
+
+/* Generated by genchartbl.py */
+static const int SF_BYTESEQ_CHARS[] = {
+ 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, 0 /* EOT */,
+ 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, 0 /* BS */, 0 /* HT */,
+ 0 /* LF */, 0 /* VT */, 0 /* FF */, 0 /* CR */, 0 /* SO */,
+ 0 /* SI */, 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */,
+ 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, 0 /* CAN */,
+ 0 /* EM */, 0 /* SUB */, 0 /* ESC */, 0 /* FS */, 0 /* GS */,
+ 0 /* RS */, 0 /* US */, 0 /* SPC */, 0 /* ! */, 0 /* " */,
+ 0 /* # */, 0 /* $ */, 0 /* % */, 0 /* & */, 0 /* ' */,
+ 0 /* ( */, 0 /* ) */, 0 /* * */, 1 /* + */, 0 /* , */,
+ 0 /* - */, 0 /* . */, 1 /* / */, 1 /* 0 */, 1 /* 1 */,
+ 1 /* 2 */, 1 /* 3 */, 1 /* 4 */, 1 /* 5 */, 1 /* 6 */,
+ 1 /* 7 */, 1 /* 8 */, 1 /* 9 */, 0 /* : */, 0 /* ; */,
+ 0 /* < */, 1 /* = */, 0 /* > */, 0 /* ? */, 0 /* @ */,
+ 1 /* A */, 1 /* B */, 1 /* C */, 1 /* D */, 1 /* E */,
+ 1 /* F */, 1 /* G */, 1 /* H */, 1 /* I */, 1 /* J */,
+ 1 /* K */, 1 /* L */, 1 /* M */, 1 /* N */, 1 /* O */,
+ 1 /* P */, 1 /* Q */, 1 /* R */, 1 /* S */, 1 /* T */,
+ 1 /* U */, 1 /* V */, 1 /* W */, 1 /* X */, 1 /* Y */,
+ 1 /* Z */, 0 /* [ */, 0 /* \ */, 0 /* ] */, 0 /* ^ */,
+ 0 /* _ */, 0 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */,
+ 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, 1 /* h */,
+ 1 /* i */, 1 /* j */, 1 /* k */, 1 /* l */, 1 /* m */,
+ 1 /* n */, 1 /* o */, 1 /* p */, 1 /* q */, 1 /* r */,
+ 1 /* s */, 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */,
+ 1 /* x */, 1 /* y */, 1 /* z */, 0 /* { */, 0 /* | */,
+ 0 /* } */, 0 /* ~ */, 0 /* DEL */, 0 /* 0x80 */, 0 /* 0x81 */,
+ 0 /* 0x82 */, 0 /* 0x83 */, 0 /* 0x84 */, 0 /* 0x85 */, 0 /* 0x86 */,
+ 0 /* 0x87 */, 0 /* 0x88 */, 0 /* 0x89 */, 0 /* 0x8a */, 0 /* 0x8b */,
+ 0 /* 0x8c */, 0 /* 0x8d */, 0 /* 0x8e */, 0 /* 0x8f */, 0 /* 0x90 */,
+ 0 /* 0x91 */, 0 /* 0x92 */, 0 /* 0x93 */, 0 /* 0x94 */, 0 /* 0x95 */,
+ 0 /* 0x96 */, 0 /* 0x97 */, 0 /* 0x98 */, 0 /* 0x99 */, 0 /* 0x9a */,
+ 0 /* 0x9b */, 0 /* 0x9c */, 0 /* 0x9d */, 0 /* 0x9e */, 0 /* 0x9f */,
+ 0 /* 0xa0 */, 0 /* 0xa1 */, 0 /* 0xa2 */, 0 /* 0xa3 */, 0 /* 0xa4 */,
+ 0 /* 0xa5 */, 0 /* 0xa6 */, 0 /* 0xa7 */, 0 /* 0xa8 */, 0 /* 0xa9 */,
+ 0 /* 0xaa */, 0 /* 0xab */, 0 /* 0xac */, 0 /* 0xad */, 0 /* 0xae */,
+ 0 /* 0xaf */, 0 /* 0xb0 */, 0 /* 0xb1 */, 0 /* 0xb2 */, 0 /* 0xb3 */,
+ 0 /* 0xb4 */, 0 /* 0xb5 */, 0 /* 0xb6 */, 0 /* 0xb7 */, 0 /* 0xb8 */,
+ 0 /* 0xb9 */, 0 /* 0xba */, 0 /* 0xbb */, 0 /* 0xbc */, 0 /* 0xbd */,
+ 0 /* 0xbe */, 0 /* 0xbf */, 0 /* 0xc0 */, 0 /* 0xc1 */, 0 /* 0xc2 */,
+ 0 /* 0xc3 */, 0 /* 0xc4 */, 0 /* 0xc5 */, 0 /* 0xc6 */, 0 /* 0xc7 */,
+ 0 /* 0xc8 */, 0 /* 0xc9 */, 0 /* 0xca */, 0 /* 0xcb */, 0 /* 0xcc */,
+ 0 /* 0xcd */, 0 /* 0xce */, 0 /* 0xcf */, 0 /* 0xd0 */, 0 /* 0xd1 */,
+ 0 /* 0xd2 */, 0 /* 0xd3 */, 0 /* 0xd4 */, 0 /* 0xd5 */, 0 /* 0xd6 */,
+ 0 /* 0xd7 */, 0 /* 0xd8 */, 0 /* 0xd9 */, 0 /* 0xda */, 0 /* 0xdb */,
+ 0 /* 0xdc */, 0 /* 0xdd */, 0 /* 0xde */, 0 /* 0xdf */, 0 /* 0xe0 */,
+ 0 /* 0xe1 */, 0 /* 0xe2 */, 0 /* 0xe3 */, 0 /* 0xe4 */, 0 /* 0xe5 */,
+ 0 /* 0xe6 */, 0 /* 0xe7 */, 0 /* 0xe8 */, 0 /* 0xe9 */, 0 /* 0xea */,
+ 0 /* 0xeb */, 0 /* 0xec */, 0 /* 0xed */, 0 /* 0xee */, 0 /* 0xef */,
+ 0 /* 0xf0 */, 0 /* 0xf1 */, 0 /* 0xf2 */, 0 /* 0xf3 */, 0 /* 0xf4 */,
+ 0 /* 0xf5 */, 0 /* 0xf6 */, 0 /* 0xf7 */, 0 /* 0xf8 */, 0 /* 0xf9 */,
+ 0 /* 0xfa */, 0 /* 0xfb */, 0 /* 0xfc */, 0 /* 0xfd */, 0 /* 0xfe */,
+ 0 /* 0xff */,
+};
+
+static ssize_t sf_parse_byteseq(nghttp2_sf_value *dest, const uint8_t *begin,
+ const uint8_t *end) {
+ const uint8_t *p = begin;
+
+ if (*p++ != ':') {
+ return -1;
+ }
+
+ for (; p != end; ++p) {
+ switch (*p) {
+ case ':':
+ if (dest) {
+ dest->type = NGHTTP2_SF_VALUE_TYPE_BYTESEQ;
+ dest->s.base = begin + 1;
+ dest->s.len = (size_t)(p - dest->s.base);
+ }
+
+ ++p;
+
+ return p - begin;
+ default:
+ if (!SF_BYTESEQ_CHARS[*p]) {
+ return -1;
+ }
+ }
+ }
+
+ return -1;
+}
+
+static ssize_t sf_parse_boolean(nghttp2_sf_value *dest, const uint8_t *begin,
+ const uint8_t *end) {
+ const uint8_t *p = begin;
+ int b;
+
+ if (*p++ != '?') {
+ return -1;
+ }
+
+ if (p == end) {
+ return -1;
+ }
+
+ switch (*p++) {
+ case '0':
+ b = 0;
+ break;
+ case '1':
+ b = 1;
+ break;
+ default:
+ return -1;
+ }
+
+ if (dest) {
+ dest->type = NGHTTP2_SF_VALUE_TYPE_BOOLEAN;
+ dest->b = b;
+ }
+
+ return p - begin;
+}
+
+static ssize_t sf_parse_bare_item(nghttp2_sf_value *dest, const uint8_t *begin,
+ const uint8_t *end) {
+ switch (*begin) {
+ case '-':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ return sf_parse_integer_or_decimal(dest, begin, end);
+ case '"':
+ return sf_parse_string(dest, begin, end);
+ case '*':
+ return sf_parse_token(dest, begin, end);
+ case ':':
+ return sf_parse_byteseq(dest, begin, end);
+ case '?':
+ return sf_parse_boolean(dest, begin, end);
+ default:
+ if (('A' <= *begin && *begin <= 'Z') || ('a' <= *begin && *begin <= 'z')) {
+ return sf_parse_token(dest, begin, end);
+ }
+ return -1;
+ }
+}
+
+#define sf_discard_sp_end_err(BEGIN, END, ERR) \
+ for (;; ++(BEGIN)) { \
+ if ((BEGIN) == (END)) { \
+ return (ERR); \
+ } \
+ if (*(BEGIN) != ' ') { \
+ break; \
+ } \
+ }
+
+static ssize_t sf_parse_params(const uint8_t *begin, const uint8_t *end) {
+ const uint8_t *p = begin;
+ ssize_t slen;
+
+ for (; p != end && *p == ';';) {
+ ++p;
+
+ sf_discard_sp_end_err(p, end, -1);
+
+ slen = sf_parse_key(p, end);
+ if (slen < 0) {
+ return -1;
+ }
+
+ p += slen;
+
+ if (p == end || *p != '=') {
+ /* Boolean true */
+ } else if (++p == end) {
+ return -1;
+ } else {
+ slen = sf_parse_bare_item(NULL, p, end);
+ if (slen < 0) {
+ return -1;
+ }
+
+ p += slen;
+ }
+ }
+
+ return p - begin;
+}
+
+static ssize_t sf_parse_item(nghttp2_sf_value *dest, const uint8_t *begin,
+ const uint8_t *end) {
+ const uint8_t *p = begin;
+ ssize_t slen;
+
+ slen = sf_parse_bare_item(dest, p, end);
+ if (slen < 0) {
+ return -1;
+ }
+
+ p += slen;
+
+ slen = sf_parse_params(p, end);
+ if (slen < 0) {
+ return -1;
+ }
+
+ p += slen;
+
+ return p - begin;
+}
+
+ssize_t nghttp2_sf_parse_item(nghttp2_sf_value *dest, const uint8_t *begin,
+ const uint8_t *end) {
+ return sf_parse_item(dest, begin, end);
+}
+
+static ssize_t sf_parse_inner_list(nghttp2_sf_value *dest, const uint8_t *begin,
+ const uint8_t *end) {
+ const uint8_t *p = begin;
+ ssize_t slen;
+
+ if (*p++ != '(') {
+ return -1;
+ }
+
+ for (;;) {
+ sf_discard_sp_end_err(p, end, -1);
+
+ if (*p == ')') {
+ ++p;
+
+ slen = sf_parse_params(p, end);
+ if (slen < 0) {
+ return -1;
+ }
+
+ p += slen;
+
+ if (dest) {
+ dest->type = NGHTTP2_SF_VALUE_TYPE_INNER_LIST;
+ }
+
+ return p - begin;
+ }
+
+ slen = sf_parse_item(NULL, p, end);
+ if (slen < 0) {
+ return -1;
+ }
+
+ p += slen;
+
+ if (p == end || (*p != ' ' && *p != ')')) {
+ return -1;
+ }
+ }
+}
+
+ssize_t nghttp2_sf_parse_inner_list(nghttp2_sf_value *dest,
+ const uint8_t *begin, const uint8_t *end) {
+ return sf_parse_inner_list(dest, begin, end);
+}
+
+static ssize_t sf_parse_item_or_inner_list(nghttp2_sf_value *dest,
+ const uint8_t *begin,
+ const uint8_t *end) {
+ if (*begin == '(') {
+ return sf_parse_inner_list(dest, begin, end);
+ }
+
+ return sf_parse_item(dest, begin, end);
+}
+
+#define sf_discard_ows(BEGIN, END) \
+ for (;; ++(BEGIN)) { \
+ if ((BEGIN) == (END)) { \
+ goto fin; \
+ } \
+ if (*(BEGIN) != ' ' && *(BEGIN) != '\t') { \
+ break; \
+ } \
+ }
+
+#define sf_discard_ows_end_err(BEGIN, END, ERR) \
+ for (;; ++(BEGIN)) { \
+ if ((BEGIN) == (END)) { \
+ return (ERR); \
+ } \
+ if (*(BEGIN) != ' ' && *(BEGIN) != '\t') { \
+ break; \
+ } \
+ }
+
+int nghttp2_http_parse_priority(nghttp2_extpri *dest, const uint8_t *value,
+ size_t valuelen) {
+ const uint8_t *p = value, *end = value + valuelen;
+ ssize_t slen;
+ nghttp2_sf_value val;
+ nghttp2_extpri pri = *dest;
+ const uint8_t *key;
+ size_t keylen;
+
+ for (; p != end && *p == ' '; ++p)
+ ;
+
+ for (; p != end;) {
+ slen = sf_parse_key(p, end);
+ if (slen < 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ key = p;
+ keylen = (size_t)slen;
+
+ p += slen;
+
+ if (p == end || *p != '=') {
+ /* Boolean true */
+ val.type = NGHTTP2_SF_VALUE_TYPE_BOOLEAN;
+ val.b = 1;
+
+ slen = sf_parse_params(p, end);
+ if (slen < 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+ } else if (++p == end) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ } else {
+ slen = sf_parse_item_or_inner_list(&val, p, end);
+ if (slen < 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+ }
+
+ p += slen;
+
+ if (keylen == 1) {
+ switch (key[0]) {
+ case 'i':
+ if (val.type != NGHTTP2_SF_VALUE_TYPE_BOOLEAN) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ pri.inc = val.b;
+
+ break;
+ case 'u':
+ if (val.type != NGHTTP2_SF_VALUE_TYPE_INTEGER ||
+ val.i < NGHTTP2_EXTPRI_URGENCY_HIGH ||
+ NGHTTP2_EXTPRI_URGENCY_LOW < val.i) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ pri.urgency = (uint32_t)val.i;
+
+ break;
+ }
+ }
+
+ sf_discard_ows(p, end);
+
+ if (*p++ != ',') {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ sf_discard_ows_end_err(p, end, NGHTTP2_ERR_INVALID_ARGUMENT);
+ }
+
+fin:
+ *dest = pri;
+
+ return 0;
+}