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/*
* nghttp3
*
* Copyright (c) 2019 nghttp3 contributors
* Copyright (c) 2015 nghttp2 contributors
*
* 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 "nghttp3_http.h"
#include <string.h>
#include <assert.h>
#include "nghttp3_stream.h"
#include "nghttp3_macro.h"
#include "nghttp3_conv.h"
static uint8_t downcase(uint8_t c) {
return 'A' <= c && c <= 'Z' ? (uint8_t)(c - 'A' + 'a') : c;
}
/*
* memieq returns 1 if the data pointed by |a| of length |n| equals to
* |b| of the same length in case-insensitive manner. The data
* pointed by |a| must not include upper cased letters (A-Z).
*/
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 (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(nghttp3_http_state *http,
const nghttp3_qpack_nv *nv, uint32_t flag) {
if ((http->flags & flag) || nv->value->len == 0) {
return 0;
}
http->flags |= flag;
return 1;
}
static int expect_response_body(nghttp3_http_state *http) {
return (http->flags & NGHTTP3_HTTP_FLAG_METH_HEAD) == 0 &&
http->status_code / 100 != 1 && http->status_code != 304 &&
http->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_flags(nghttp3_http_state *http) {
return (http->flags & NGHTTP3_HTTP_FLAG_SCHEME_HTTP) == 0 ||
((http->flags & NGHTTP3_HTTP_FLAG_PATH_REGULAR) ||
((http->flags & NGHTTP3_HTTP_FLAG_METH_OPTIONS) &&
(http->flags & NGHTTP3_HTTP_FLAG_PATH_ASTERISK)));
}
/* 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 nghttp3_ssize 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 nghttp3_ssize sf_parse_integer_or_decimal(nghttp3_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 = NGHTTP3_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 != NGHTTP3_SF_VALUE_TYPE_INTEGER) {
goto fin;
}
if (len > 12) {
return -1;
}
fpos = len;
type = NGHTTP3_SF_VALUE_TYPE_DECIMAL;
break;
default:
goto fin;
};
}
fin:
switch (type) {
case NGHTTP3_SF_VALUE_TYPE_INTEGER:
if (dest) {
dest->type = (uint8_t)type;
dest->i = value * sign;
}
return p - begin;
case NGHTTP3_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 nghttp3_ssize sf_parse_string(nghttp3_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 = NGHTTP3_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 nghttp3_ssize sf_parse_token(nghttp3_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 = NGHTTP3_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 nghttp3_ssize sf_parse_byteseq(nghttp3_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 = NGHTTP3_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 nghttp3_ssize sf_parse_boolean(nghttp3_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 = NGHTTP3_SF_VALUE_TYPE_BOOLEAN;
dest->b = b;
}
return p - begin;
}
static nghttp3_ssize sf_parse_bare_item(nghttp3_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 nghttp3_ssize sf_parse_params(const uint8_t *begin, const uint8_t *end) {
const uint8_t *p = begin;
nghttp3_ssize 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 nghttp3_ssize sf_parse_item(nghttp3_sf_value *dest, const uint8_t *begin,
const uint8_t *end) {
const uint8_t *p = begin;
nghttp3_ssize 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;
}
nghttp3_ssize nghttp3_sf_parse_item(nghttp3_sf_value *dest,
const uint8_t *begin, const uint8_t *end) {
return sf_parse_item(dest, begin, end);
}
static nghttp3_ssize sf_parse_inner_list(nghttp3_sf_value *dest,
const uint8_t *begin,
const uint8_t *end) {
const uint8_t *p = begin;
nghttp3_ssize 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 = NGHTTP3_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;
}
}
}
nghttp3_ssize nghttp3_sf_parse_inner_list(nghttp3_sf_value *dest,
const uint8_t *begin,
const uint8_t *end) {
return sf_parse_inner_list(dest, begin, end);
}
static nghttp3_ssize sf_parse_item_or_inner_list(nghttp3_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 nghttp3_http_parse_priority(nghttp3_pri *dest, const uint8_t *value,
size_t valuelen) {
const uint8_t *p = value, *end = value + valuelen;
nghttp3_ssize slen;
nghttp3_sf_value val;
nghttp3_pri 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 NGHTTP3_ERR_INVALID_ARGUMENT;
}
key = p;
keylen = (size_t)slen;
p += slen;
if (p == end || *p != '=') {
/* Boolean true */
val.type = NGHTTP3_SF_VALUE_TYPE_BOOLEAN;
val.b = 1;
slen = sf_parse_params(p, end);
if (slen < 0) {
return NGHTTP3_ERR_INVALID_ARGUMENT;
}
} else if (++p == end) {
return NGHTTP3_ERR_INVALID_ARGUMENT;
} else {
slen = sf_parse_item_or_inner_list(&val, p, end);
if (slen < 0) {
return NGHTTP3_ERR_INVALID_ARGUMENT;
}
}
p += slen;
if (keylen == 1) {
switch (key[0]) {
case 'i':
if (val.type != NGHTTP3_SF_VALUE_TYPE_BOOLEAN) {
return NGHTTP3_ERR_INVALID_ARGUMENT;
}
pri.inc = val.b;
break;
case 'u':
if (val.type != NGHTTP3_SF_VALUE_TYPE_INTEGER ||
val.i < NGHTTP3_URGENCY_HIGH || NGHTTP3_URGENCY_LOW < val.i) {
return NGHTTP3_ERR_INVALID_ARGUMENT;
}
pri.urgency = (uint32_t)val.i;
break;
}
}
sf_discard_ows(p, end);
if (*p++ != ',') {
return NGHTTP3_ERR_INVALID_ARGUMENT;
}
sf_discard_ows_end_err(p, end, NGHTTP3_ERR_INVALID_ARGUMENT);
}
fin:
*dest = pri;
return 0;
}
static int http_request_on_header(nghttp3_http_state *http,
nghttp3_qpack_nv *nv, int trailers,
int connect_protocol) {
nghttp3_pri pri;
if (nv->name->base[0] == ':') {
if (trailers ||
(http->flags & NGHTTP3_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
}
switch (nv->token) {
case NGHTTP3_QPACK_TOKEN__AUTHORITY:
if (!check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__AUTHORITY)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
break;
case NGHTTP3_QPACK_TOKEN__METHOD:
if (!check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__METHOD)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
switch (nv->value->len) {
case 4:
if (lstreq("HEAD", nv->value->base, nv->value->len)) {
http->flags |= NGHTTP3_HTTP_FLAG_METH_HEAD;
}
break;
case 7:
switch (nv->value->base[6]) {
case 'T':
if (lstreq("CONNECT", nv->value->base, nv->value->len)) {
http->flags |= NGHTTP3_HTTP_FLAG_METH_CONNECT;
}
break;
case 'S':
if (lstreq("OPTIONS", nv->value->base, nv->value->len)) {
http->flags |= NGHTTP3_HTTP_FLAG_METH_OPTIONS;
}
break;
}
break;
}
break;
case NGHTTP3_QPACK_TOKEN__PATH:
if (!check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__PATH)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
if (nv->value->base[0] == '/') {
http->flags |= NGHTTP3_HTTP_FLAG_PATH_REGULAR;
} else if (nv->value->len == 1 && nv->value->base[0] == '*') {
http->flags |= NGHTTP3_HTTP_FLAG_PATH_ASTERISK;
}
break;
case NGHTTP3_QPACK_TOKEN__SCHEME:
if (!check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__SCHEME)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
/* scheme is case-insensitive:
https://datatracker.ietf.org/doc/html/rfc3986#section-3.1 */
if (lstrieq("http", nv->value->base, nv->value->len) ||
lstrieq("https", nv->value->base, nv->value->len)) {
http->flags |= NGHTTP3_HTTP_FLAG_SCHEME_HTTP;
}
break;
case NGHTTP3_QPACK_TOKEN__PROTOCOL:
if (!connect_protocol) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
if (!check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__PROTOCOL)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
break;
case NGHTTP3_QPACK_TOKEN_HOST:
if (!check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG_HOST)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
break;
case NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH: {
/* https://tools.ietf.org/html/rfc7230#section-4.1.2: A sender
MUST NOT generate a trailer that contains a field necessary for
message framing (e.g., Transfer-Encoding and Content-Length),
... */
if (trailers) {
return NGHTTP3_ERR_REMOVE_HTTP_HEADER;
}
if (http->content_length != -1) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
http->content_length = parse_uint(nv->value->base, nv->value->len);
if (http->content_length == -1) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
break;
}
/* disallowed header fields */
case NGHTTP3_QPACK_TOKEN_CONNECTION:
case NGHTTP3_QPACK_TOKEN_KEEP_ALIVE:
case NGHTTP3_QPACK_TOKEN_PROXY_CONNECTION:
case NGHTTP3_QPACK_TOKEN_TRANSFER_ENCODING:
case NGHTTP3_QPACK_TOKEN_UPGRADE:
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
case NGHTTP3_QPACK_TOKEN_TE:
if (!lstrieq("trailers", nv->value->base, nv->value->len)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
break;
case NGHTTP3_QPACK_TOKEN_PRIORITY:
if (!trailers && !(http->flags & NGHTTP3_HTTP_FLAG_BAD_PRIORITY)) {
pri.urgency = nghttp3_pri_uint8_urgency(http->pri);
pri.inc = nghttp3_pri_uint8_inc(http->pri);
if (nghttp3_http_parse_priority(&pri, nv->value->base, nv->value->len) ==
0) {
http->pri = nghttp3_pri_to_uint8(&pri);
http->flags |= NGHTTP3_HTTP_FLAG_PRIORITY;
} else {
http->flags &= ~NGHTTP3_HTTP_FLAG_PRIORITY;
http->flags |= NGHTTP3_HTTP_FLAG_BAD_PRIORITY;
}
}
break;
default:
if (nv->name->base[0] == ':') {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
}
return 0;
}
static int http_response_on_header(nghttp3_http_state *http,
nghttp3_qpack_nv *nv, int trailers) {
if (nv->name->base[0] == ':') {
if (trailers ||
(http->flags & NGHTTP3_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
}
switch (nv->token) {
case NGHTTP3_QPACK_TOKEN__STATUS: {
if (!check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__STATUS)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
if (nv->value->len != 3) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
http->status_code = (int16_t)parse_uint(nv->value->base, nv->value->len);
if (http->status_code < 100 || http->status_code == 101) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
break;
}
case NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH: {
/* https://tools.ietf.org/html/rfc7230#section-4.1.2: A sender
MUST NOT generate a trailer that contains a field necessary for
message framing (e.g., Transfer-Encoding and Content-Length),
... */
if (trailers) {
return NGHTTP3_ERR_REMOVE_HTTP_HEADER;
}
if (http->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 (http->content_length != -1) {
/* Found multiple content-length field */
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
if (!lstrieq("0", nv->value->base, nv->value->len)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
http->content_length = 0;
return NGHTTP3_ERR_REMOVE_HTTP_HEADER;
}
if (http->status_code / 100 == 1) {
return NGHTTP3_ERR_REMOVE_HTTP_HEADER;
}
/* https://tools.ietf.org/html/rfc7230#section-3.3.3 */
if (http->status_code / 100 == 2 &&
(http->flags & NGHTTP3_HTTP_FLAG_METH_CONNECT)) {
return NGHTTP3_ERR_REMOVE_HTTP_HEADER;
}
if (http->content_length != -1) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
http->content_length = parse_uint(nv->value->base, nv->value->len);
if (http->content_length == -1) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
break;
}
/* disallowed header fields */
case NGHTTP3_QPACK_TOKEN_CONNECTION:
case NGHTTP3_QPACK_TOKEN_KEEP_ALIVE:
case NGHTTP3_QPACK_TOKEN_PROXY_CONNECTION:
case NGHTTP3_QPACK_TOKEN_TRANSFER_ENCODING:
case NGHTTP3_QPACK_TOKEN_UPGRADE:
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
case NGHTTP3_QPACK_TOKEN_TE:
if (!lstrieq("trailers", nv->value->base, nv->value->len)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
break;
default:
if (nv->name->base[0] == ':') {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
}
return 0;
}
/* Generated by genauthroitychartbl.py */
static char VALID_AUTHORITY_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 /* " */, 0 /* # */,
1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */,
1 /* ( */, 1 /* ) */, 1 /* * */, 1 /* + */,
1 /* , */, 1 /* - */, 1 /* . */, 0 /* / */,
1 /* 0 */, 1 /* 1 */, 1 /* 2 */, 1 /* 3 */,
1 /* 4 */, 1 /* 5 */, 1 /* 6 */, 1 /* 7 */,
1 /* 8 */, 1 /* 9 */, 1 /* : */, 1 /* ; */,
0 /* < */, 1 /* = */, 0 /* > */, 0 /* ? */,
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 /* ] */, 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 /* } */, 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 int check_authority(const uint8_t *value, size_t len) {
const uint8_t *last;
for (last = value + len; value != last; ++value) {
if (!VALID_AUTHORITY_CHARS[*value]) {
return 0;
}
}
return 1;
}
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;
}
/* Generated by genmethodchartbl.py */
static char VALID_METHOD_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 /* . */, 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 /* @ */, 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 int check_method(const uint8_t *value, size_t len) {
const uint8_t *last;
if (len == 0) {
return 0;
}
for (last = value + len; value != last; ++value) {
if (!VALID_METHOD_CHARS[*value]) {
return 0;
}
}
return 1;
}
/* Generated by genpathchartbl.py */
static char VALID_PATH_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 /* ! */, 1 /* " */, 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 /* [ */,
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 /* { */,
1 /* | */, 1 /* } */, 1 /* ~ */, 0 /* DEL */,
1 /* 0x80 */, 1 /* 0x81 */, 1 /* 0x82 */, 1 /* 0x83 */,
1 /* 0x84 */, 1 /* 0x85 */, 1 /* 0x86 */, 1 /* 0x87 */,
1 /* 0x88 */, 1 /* 0x89 */, 1 /* 0x8a */, 1 /* 0x8b */,
1 /* 0x8c */, 1 /* 0x8d */, 1 /* 0x8e */, 1 /* 0x8f */,
1 /* 0x90 */, 1 /* 0x91 */, 1 /* 0x92 */, 1 /* 0x93 */,
1 /* 0x94 */, 1 /* 0x95 */, 1 /* 0x96 */, 1 /* 0x97 */,
1 /* 0x98 */, 1 /* 0x99 */, 1 /* 0x9a */, 1 /* 0x9b */,
1 /* 0x9c */, 1 /* 0x9d */, 1 /* 0x9e */, 1 /* 0x9f */,
1 /* 0xa0 */, 1 /* 0xa1 */, 1 /* 0xa2 */, 1 /* 0xa3 */,
1 /* 0xa4 */, 1 /* 0xa5 */, 1 /* 0xa6 */, 1 /* 0xa7 */,
1 /* 0xa8 */, 1 /* 0xa9 */, 1 /* 0xaa */, 1 /* 0xab */,
1 /* 0xac */, 1 /* 0xad */, 1 /* 0xae */, 1 /* 0xaf */,
1 /* 0xb0 */, 1 /* 0xb1 */, 1 /* 0xb2 */, 1 /* 0xb3 */,
1 /* 0xb4 */, 1 /* 0xb5 */, 1 /* 0xb6 */, 1 /* 0xb7 */,
1 /* 0xb8 */, 1 /* 0xb9 */, 1 /* 0xba */, 1 /* 0xbb */,
1 /* 0xbc */, 1 /* 0xbd */, 1 /* 0xbe */, 1 /* 0xbf */,
1 /* 0xc0 */, 1 /* 0xc1 */, 1 /* 0xc2 */, 1 /* 0xc3 */,
1 /* 0xc4 */, 1 /* 0xc5 */, 1 /* 0xc6 */, 1 /* 0xc7 */,
1 /* 0xc8 */, 1 /* 0xc9 */, 1 /* 0xca */, 1 /* 0xcb */,
1 /* 0xcc */, 1 /* 0xcd */, 1 /* 0xce */, 1 /* 0xcf */,
1 /* 0xd0 */, 1 /* 0xd1 */, 1 /* 0xd2 */, 1 /* 0xd3 */,
1 /* 0xd4 */, 1 /* 0xd5 */, 1 /* 0xd6 */, 1 /* 0xd7 */,
1 /* 0xd8 */, 1 /* 0xd9 */, 1 /* 0xda */, 1 /* 0xdb */,
1 /* 0xdc */, 1 /* 0xdd */, 1 /* 0xde */, 1 /* 0xdf */,
1 /* 0xe0 */, 1 /* 0xe1 */, 1 /* 0xe2 */, 1 /* 0xe3 */,
1 /* 0xe4 */, 1 /* 0xe5 */, 1 /* 0xe6 */, 1 /* 0xe7 */,
1 /* 0xe8 */, 1 /* 0xe9 */, 1 /* 0xea */, 1 /* 0xeb */,
1 /* 0xec */, 1 /* 0xed */, 1 /* 0xee */, 1 /* 0xef */,
1 /* 0xf0 */, 1 /* 0xf1 */, 1 /* 0xf2 */, 1 /* 0xf3 */,
1 /* 0xf4 */, 1 /* 0xf5 */, 1 /* 0xf6 */, 1 /* 0xf7 */,
1 /* 0xf8 */, 1 /* 0xf9 */, 1 /* 0xfa */, 1 /* 0xfb */,
1 /* 0xfc */, 1 /* 0xfd */, 1 /* 0xfe */, 1 /* 0xff */
};
static int check_path(const uint8_t *value, size_t len) {
const uint8_t *last;
for (last = value + len; value != last; ++value) {
if (!VALID_PATH_CHARS[*value]) {
return 0;
}
}
return 1;
}
int nghttp3_http_on_header(nghttp3_http_state *http, nghttp3_qpack_nv *nv,
int request, int trailers, int connect_protocol) {
int rv;
size_t i;
uint8_t c;
if (!nghttp3_check_header_name(nv->name->base, nv->name->len)) {
if (nv->name->len > 0 && nv->name->base[0] == ':') {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
/* header field name must be lower-cased without exception */
for (i = 0; i < nv->name->len; ++i) {
c = nv->name->base[i];
if ('A' <= c && c <= 'Z') {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
}
/* When ignoring regular header fields, we set this flag so that
we still enforce header field ordering rule for pseudo header
fields. */
http->flags |= NGHTTP3_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
return NGHTTP3_ERR_REMOVE_HTTP_HEADER;
}
assert(nv->name->len > 0);
switch (nv->token) {
case NGHTTP3_QPACK_TOKEN__METHOD:
rv = check_method(nv->value->base, nv->value->len);
break;
case NGHTTP3_QPACK_TOKEN__SCHEME:
rv = check_scheme(nv->value->base, nv->value->len);
break;
case NGHTTP3_QPACK_TOKEN__AUTHORITY:
case NGHTTP3_QPACK_TOKEN_HOST:
if (request) {
rv = check_authority(nv->value->base, nv->value->len);
} else {
/* The use of host field in response field section is
undefined. */
rv = nghttp3_check_header_value(nv->value->base, nv->value->len);
}
break;
case NGHTTP3_QPACK_TOKEN__PATH:
rv = check_path(nv->value->base, nv->value->len);
break;
default:
rv = nghttp3_check_header_value(nv->value->base, nv->value->len);
}
if (rv == 0) {
if (nv->name->base[0] == ':') {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
/* When ignoring regular header fields, we set this flag so that
we still enforce header field ordering rule for pseudo header
fields. */
http->flags |= NGHTTP3_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
return NGHTTP3_ERR_REMOVE_HTTP_HEADER;
}
if (request) {
rv = http_request_on_header(http, nv, trailers, connect_protocol);
} else {
rv = http_response_on_header(http, nv, trailers);
}
if (nv->name->base[0] != ':') {
switch (rv) {
case 0:
case NGHTTP3_ERR_REMOVE_HTTP_HEADER:
http->flags |= NGHTTP3_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
break;
}
}
return rv;
}
int nghttp3_http_on_request_headers(nghttp3_http_state *http) {
if (!(http->flags & NGHTTP3_HTTP_FLAG__PROTOCOL) &&
(http->flags & NGHTTP3_HTTP_FLAG_METH_CONNECT)) {
if ((http->flags & (NGHTTP3_HTTP_FLAG__SCHEME | NGHTTP3_HTTP_FLAG__PATH)) ||
(http->flags & NGHTTP3_HTTP_FLAG__AUTHORITY) == 0) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
http->content_length = -1;
} else {
if ((http->flags & NGHTTP3_HTTP_FLAG_REQ_HEADERS) !=
NGHTTP3_HTTP_FLAG_REQ_HEADERS ||
(http->flags &
(NGHTTP3_HTTP_FLAG__AUTHORITY | NGHTTP3_HTTP_FLAG_HOST)) == 0) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
if ((http->flags & NGHTTP3_HTTP_FLAG__PROTOCOL) &&
((http->flags & NGHTTP3_HTTP_FLAG_METH_CONNECT) == 0 ||
(http->flags & NGHTTP3_HTTP_FLAG__AUTHORITY) == 0)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
if (!check_path_flags(http)) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
}
return 0;
}
int nghttp3_http_on_response_headers(nghttp3_http_state *http) {
if ((http->flags & NGHTTP3_HTTP_FLAG__STATUS) == 0) {
return NGHTTP3_ERR_MALFORMED_HTTP_HEADER;
}
if (http->status_code / 100 == 1) {
/* non-final response */
http->flags = (http->flags & NGHTTP3_HTTP_FLAG_METH_ALL) |
NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE;
http->content_length = -1;
http->status_code = -1;
return 0;
}
http->flags &= ~NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE;
if (!expect_response_body(http)) {
http->content_length = 0;
} else if (http->flags & NGHTTP3_HTTP_FLAG_METH_CONNECT) {
http->content_length = -1;
}
return 0;
}
int nghttp3_http_on_remote_end_stream(nghttp3_stream *stream) {
if ((stream->rx.http.flags & NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE) ||
(stream->rx.http.content_length != -1 &&
stream->rx.http.content_length != stream->rx.http.recv_content_length)) {
return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING;
}
return 0;
}
int nghttp3_http_on_data_chunk(nghttp3_stream *stream, size_t n) {
stream->rx.http.recv_content_length += (int64_t)n;
if ((stream->rx.http.flags & NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE) ||
(stream->rx.http.content_length != -1 &&
stream->rx.http.recv_content_length > stream->rx.http.content_length)) {
return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING;
}
return 0;
}
void nghttp3_http_record_request_method(nghttp3_stream *stream,
const nghttp3_nv *nva, size_t nvlen) {
size_t i;
const nghttp3_nv *nv;
/* TODO we should do this strictly. */
for (i = 0; i < nvlen; ++i) {
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->rx.http.flags |= NGHTTP3_HTTP_FLAG_METH_CONNECT;
return;
}
if (lstreq("HEAD", nv->value, nv->valuelen)) {
stream->rx.http.flags |= NGHTTP3_HTTP_FLAG_METH_HEAD;
return;
}
return;
}
}
/* Generated by gennmchartbl.py */
static const int VALID_HD_NAME_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 /* . */, 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 /* ] */, 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 */
};
int nghttp3_check_header_name(const uint8_t *name, size_t len) {
const uint8_t *last;
if (len == 0) {
return 0;
}
if (*name == ':') {
if (len == 1) {
return 0;
}
++name;
--len;
}
for (last = name + len; name != last; ++name) {
if (!VALID_HD_NAME_CHARS[*name]) {
return 0;
}
}
return 1;
}
/* Generated by genvchartbl.py */
static const int VALID_HD_VALUE_CHARS[] = {
0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */,
0 /* EOT */, 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */,
0 /* BS */, 1 /* 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 /* ! */, 1 /* " */, 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 /* [ */,
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 /* { */,
1 /* | */, 1 /* } */, 1 /* ~ */, 0 /* DEL */,
1 /* 0x80 */, 1 /* 0x81 */, 1 /* 0x82 */, 1 /* 0x83 */,
1 /* 0x84 */, 1 /* 0x85 */, 1 /* 0x86 */, 1 /* 0x87 */,
1 /* 0x88 */, 1 /* 0x89 */, 1 /* 0x8a */, 1 /* 0x8b */,
1 /* 0x8c */, 1 /* 0x8d */, 1 /* 0x8e */, 1 /* 0x8f */,
1 /* 0x90 */, 1 /* 0x91 */, 1 /* 0x92 */, 1 /* 0x93 */,
1 /* 0x94 */, 1 /* 0x95 */, 1 /* 0x96 */, 1 /* 0x97 */,
1 /* 0x98 */, 1 /* 0x99 */, 1 /* 0x9a */, 1 /* 0x9b */,
1 /* 0x9c */, 1 /* 0x9d */, 1 /* 0x9e */, 1 /* 0x9f */,
1 /* 0xa0 */, 1 /* 0xa1 */, 1 /* 0xa2 */, 1 /* 0xa3 */,
1 /* 0xa4 */, 1 /* 0xa5 */, 1 /* 0xa6 */, 1 /* 0xa7 */,
1 /* 0xa8 */, 1 /* 0xa9 */, 1 /* 0xaa */, 1 /* 0xab */,
1 /* 0xac */, 1 /* 0xad */, 1 /* 0xae */, 1 /* 0xaf */,
1 /* 0xb0 */, 1 /* 0xb1 */, 1 /* 0xb2 */, 1 /* 0xb3 */,
1 /* 0xb4 */, 1 /* 0xb5 */, 1 /* 0xb6 */, 1 /* 0xb7 */,
1 /* 0xb8 */, 1 /* 0xb9 */, 1 /* 0xba */, 1 /* 0xbb */,
1 /* 0xbc */, 1 /* 0xbd */, 1 /* 0xbe */, 1 /* 0xbf */,
1 /* 0xc0 */, 1 /* 0xc1 */, 1 /* 0xc2 */, 1 /* 0xc3 */,
1 /* 0xc4 */, 1 /* 0xc5 */, 1 /* 0xc6 */, 1 /* 0xc7 */,
1 /* 0xc8 */, 1 /* 0xc9 */, 1 /* 0xca */, 1 /* 0xcb */,
1 /* 0xcc */, 1 /* 0xcd */, 1 /* 0xce */, 1 /* 0xcf */,
1 /* 0xd0 */, 1 /* 0xd1 */, 1 /* 0xd2 */, 1 /* 0xd3 */,
1 /* 0xd4 */, 1 /* 0xd5 */, 1 /* 0xd6 */, 1 /* 0xd7 */,
1 /* 0xd8 */, 1 /* 0xd9 */, 1 /* 0xda */, 1 /* 0xdb */,
1 /* 0xdc */, 1 /* 0xdd */, 1 /* 0xde */, 1 /* 0xdf */,
1 /* 0xe0 */, 1 /* 0xe1 */, 1 /* 0xe2 */, 1 /* 0xe3 */,
1 /* 0xe4 */, 1 /* 0xe5 */, 1 /* 0xe6 */, 1 /* 0xe7 */,
1 /* 0xe8 */, 1 /* 0xe9 */, 1 /* 0xea */, 1 /* 0xeb */,
1 /* 0xec */, 1 /* 0xed */, 1 /* 0xee */, 1 /* 0xef */,
1 /* 0xf0 */, 1 /* 0xf1 */, 1 /* 0xf2 */, 1 /* 0xf3 */,
1 /* 0xf4 */, 1 /* 0xf5 */, 1 /* 0xf6 */, 1 /* 0xf7 */,
1 /* 0xf8 */, 1 /* 0xf9 */, 1 /* 0xfa */, 1 /* 0xfb */,
1 /* 0xfc */, 1 /* 0xfd */, 1 /* 0xfe */, 1 /* 0xff */
};
int nghttp3_check_header_value(const uint8_t *value, size_t len) {
const uint8_t *last;
switch (len) {
case 0:
return 1;
case 1:
return !(*value == ' ' || *value == '\t');
default:
if (*value == ' ' || *value == '\t' || *(value + len - 1) == ' ' ||
*(value + len - 1) == '\t') {
return 0;
}
}
for (last = value + len; value != last; ++value) {
if (!VALID_HD_VALUE_CHARS[*value]) {
return 0;
}
}
return 1;
}
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