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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-21 20:56:19 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-21 20:56:19 +0000
commit0b6210cd37b68b94252cb798598b12974a20e1c1 (patch)
treee371686554a877842d95aa94f100bee552ff2a8e /llhttp/src
parentInitial commit. (diff)
downloadnode-undici-0b6210cd37b68b94252cb798598b12974a20e1c1.tar.xz
node-undici-0b6210cd37b68b94252cb798598b12974a20e1c1.zip
Adding upstream version 5.28.2+dfsg1+~cs23.11.12.3.upstream/5.28.2+dfsg1+_cs23.11.12.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'llhttp/src')
-rw-r--r--llhttp/src/common.gypi46
-rw-r--r--llhttp/src/llhttp.gyp22
-rw-r--r--llhttp/src/llhttp.ts7
-rw-r--r--llhttp/src/llhttp/c-headers.ts106
-rw-r--r--llhttp/src/llhttp/constants.ts540
-rw-r--r--llhttp/src/llhttp/http.ts1299
-rw-r--r--llhttp/src/llhttp/url.ts220
-rw-r--r--llhttp/src/llhttp/utils.ts27
-rw-r--r--llhttp/src/native/api.c510
-rw-r--r--llhttp/src/native/api.h355
-rw-r--r--llhttp/src/native/http.c170
11 files changed, 3302 insertions, 0 deletions
diff --git a/llhttp/src/common.gypi b/llhttp/src/common.gypi
new file mode 100644
index 0000000..ef7549f
--- /dev/null
+++ b/llhttp/src/common.gypi
@@ -0,0 +1,46 @@
+{
+ 'target_defaults': {
+ 'default_configuration': 'Debug',
+ 'configurations': {
+ # TODO: hoist these out and put them somewhere common, because
+ # RuntimeLibrary MUST MATCH across the entire project
+ 'Debug': {
+ 'defines': [ 'DEBUG', '_DEBUG' ],
+ 'cflags': [ '-Wall', '-Wextra', '-O0', '-g', '-ftrapv' ],
+ 'msvs_settings': {
+ 'VCCLCompilerTool': {
+ 'RuntimeLibrary': 1, # static debug
+ },
+ },
+ },
+ 'Release': {
+ 'defines': [ 'NDEBUG' ],
+ 'cflags': [ '-Wall', '-Wextra', '-O3' ],
+ 'msvs_settings': {
+ 'VCCLCompilerTool': {
+ 'RuntimeLibrary': 0, # static release
+ },
+ },
+ }
+ },
+ 'msvs_settings': {
+ 'VCCLCompilerTool': {
+ # Compile as C++. llhttp.c is actually C99, but C++ is
+ # close enough in this case.
+ 'CompileAs': 2,
+ },
+ 'VCLibrarianTool': {
+ },
+ 'VCLinkerTool': {
+ 'GenerateDebugInformation': 'true',
+ },
+ },
+ 'conditions': [
+ ['OS == "win"', {
+ 'defines': [
+ 'WIN32'
+ ],
+ }]
+ ],
+ },
+}
diff --git a/llhttp/src/llhttp.gyp b/llhttp/src/llhttp.gyp
new file mode 100644
index 0000000..c7b8800
--- /dev/null
+++ b/llhttp/src/llhttp.gyp
@@ -0,0 +1,22 @@
+{
+ 'variables': {
+ 'llhttp_sources': [
+ 'src/llhttp.c',
+ 'src/api.c',
+ 'src/http.c',
+ ]
+ },
+ 'targets': [
+ {
+ 'target_name': 'llhttp',
+ 'type': 'static_library',
+ 'include_dirs': [ '.', 'include' ],
+ 'direct_dependent_settings': {
+ 'include_dirs': [ 'include' ],
+ },
+ 'sources': [
+ '<@(llhttp_sources)',
+ ],
+ },
+ ]
+}
diff --git a/llhttp/src/llhttp.ts b/llhttp/src/llhttp.ts
new file mode 100644
index 0000000..ba36b01
--- /dev/null
+++ b/llhttp/src/llhttp.ts
@@ -0,0 +1,7 @@
+import * as constants from './llhttp/constants';
+
+export { constants };
+
+export { HTTP } from './llhttp/http';
+export { URL } from './llhttp/url';
+export { CHeaders } from './llhttp/c-headers';
diff --git a/llhttp/src/llhttp/c-headers.ts b/llhttp/src/llhttp/c-headers.ts
new file mode 100644
index 0000000..fad66de
--- /dev/null
+++ b/llhttp/src/llhttp/c-headers.ts
@@ -0,0 +1,106 @@
+import * as constants from './constants';
+import { enumToMap, IEnumMap } from './utils';
+
+type Encoding = 'none' | 'hex';
+
+export class CHeaders {
+ public build(): string {
+ let res = '';
+
+ res += '#ifndef LLLLHTTP_C_HEADERS_\n';
+ res += '#define LLLLHTTP_C_HEADERS_\n';
+
+ res += '#ifdef __cplusplus\n';
+ res += 'extern "C" {\n';
+ res += '#endif\n';
+
+ res += '\n';
+
+ const errorMap = enumToMap(constants.ERROR);
+ const methodMap = enumToMap(constants.METHODS);
+ const httpMethodMap = enumToMap(constants.METHODS, constants.METHODS_HTTP, [
+ constants.METHODS.PRI,
+ ]);
+ const rtspMethodMap = enumToMap(constants.METHODS, constants.METHODS_RTSP);
+ const statusMap = enumToMap(constants.STATUSES, constants.STATUSES_HTTP);
+
+ res += this.buildEnum('llhttp_errno', 'HPE', errorMap);
+ res += '\n';
+ res += this.buildEnum('llhttp_flags', 'F', enumToMap(constants.FLAGS),
+ 'hex');
+ res += '\n';
+ res += this.buildEnum('llhttp_lenient_flags', 'LENIENT',
+ enumToMap(constants.LENIENT_FLAGS), 'hex');
+ res += '\n';
+ res += this.buildEnum('llhttp_type', 'HTTP',
+ enumToMap(constants.TYPE));
+ res += '\n';
+ res += this.buildEnum('llhttp_finish', 'HTTP_FINISH',
+ enumToMap(constants.FINISH));
+ res += '\n';
+ res += this.buildEnum('llhttp_method', 'HTTP', methodMap);
+ res += '\n';
+ res += this.buildEnum('llhttp_status', 'HTTP_STATUS', statusMap);
+
+ res += '\n';
+
+ res += this.buildMap('HTTP_ERRNO', errorMap);
+ res += '\n';
+ res += this.buildMap('HTTP_METHOD', httpMethodMap);
+ res += '\n';
+ res += this.buildMap('RTSP_METHOD', rtspMethodMap);
+ res += '\n';
+ res += this.buildMap('HTTP_ALL_METHOD', methodMap);
+ res += '\n';
+ res += this.buildMap('HTTP_STATUS', statusMap);
+
+ res += '\n';
+
+ res += '#ifdef __cplusplus\n';
+ res += '} /* extern "C" */\n';
+ res += '#endif\n';
+ res += '#endif /* LLLLHTTP_C_HEADERS_ */\n';
+
+ return res;
+ }
+
+ private buildEnum(name: string, prefix: string, map: IEnumMap,
+ encoding: Encoding = 'none'): string {
+ let res = '';
+
+ res += `enum ${name} {\n`;
+ const keys = Object.keys(map);
+ const keysLength = keys.length;
+ for (let i = 0; i < keysLength; i++) {
+ const key = keys[i];
+ const isLast = i === keysLength - 1;
+
+ let value: number | string = map[key];
+
+ if (encoding === 'hex') {
+ value = `0x${value.toString(16)}`;
+ }
+
+ res += ` ${prefix}_${key.replace(/-/g, '')} = ${value}`;
+ if (!isLast) {
+ res += ',\n';
+ }
+ }
+ res += '\n};\n';
+ res += `typedef enum ${name} ${name}_t;\n`;
+
+ return res;
+ }
+
+ private buildMap(name: string, map: IEnumMap): string {
+ let res = '';
+
+ res += `#define ${name}_MAP(XX) \\\n`;
+ for (const [key, value] of Object.entries(map)) {
+ res += ` XX(${value!}, ${key.replace(/-/g, '')}, ${key}) \\\n`;
+ }
+ res += '\n';
+
+ return res;
+ }
+}
diff --git a/llhttp/src/llhttp/constants.ts b/llhttp/src/llhttp/constants.ts
new file mode 100644
index 0000000..00fc523
--- /dev/null
+++ b/llhttp/src/llhttp/constants.ts
@@ -0,0 +1,540 @@
+import { enumToMap, IEnumMap } from './utils';
+
+// C headers
+
+export enum ERROR {
+ OK = 0,
+ INTERNAL = 1,
+ STRICT = 2,
+ CR_EXPECTED = 25,
+ LF_EXPECTED = 3,
+ UNEXPECTED_CONTENT_LENGTH = 4,
+ UNEXPECTED_SPACE = 30,
+ CLOSED_CONNECTION = 5,
+ INVALID_METHOD = 6,
+ INVALID_URL = 7,
+ INVALID_CONSTANT = 8,
+ INVALID_VERSION = 9,
+ INVALID_HEADER_TOKEN = 10,
+ INVALID_CONTENT_LENGTH = 11,
+ INVALID_CHUNK_SIZE = 12,
+ INVALID_STATUS = 13,
+ INVALID_EOF_STATE = 14,
+ INVALID_TRANSFER_ENCODING = 15,
+
+ CB_MESSAGE_BEGIN = 16,
+ CB_HEADERS_COMPLETE = 17,
+ CB_MESSAGE_COMPLETE = 18,
+ CB_CHUNK_HEADER = 19,
+ CB_CHUNK_COMPLETE = 20,
+
+ PAUSED = 21,
+ PAUSED_UPGRADE = 22,
+ PAUSED_H2_UPGRADE = 23,
+
+ USER = 24,
+
+ CB_URL_COMPLETE = 26,
+ CB_STATUS_COMPLETE = 27,
+ CB_METHOD_COMPLETE = 32,
+ CB_VERSION_COMPLETE = 33,
+ CB_HEADER_FIELD_COMPLETE = 28,
+ CB_HEADER_VALUE_COMPLETE = 29,
+ CB_CHUNK_EXTENSION_NAME_COMPLETE = 34,
+ CB_CHUNK_EXTENSION_VALUE_COMPLETE = 35,
+ CB_RESET = 31,
+}
+
+export enum TYPE {
+ BOTH = 0, // default
+ REQUEST = 1,
+ RESPONSE = 2,
+}
+
+export enum FLAGS {
+ CONNECTION_KEEP_ALIVE = 1 << 0,
+ CONNECTION_CLOSE = 1 << 1,
+ CONNECTION_UPGRADE = 1 << 2,
+ CHUNKED = 1 << 3,
+ UPGRADE = 1 << 4,
+ CONTENT_LENGTH = 1 << 5,
+ SKIPBODY = 1 << 6,
+ TRAILING = 1 << 7,
+ // 1 << 8 is unused
+ TRANSFER_ENCODING = 1 << 9,
+}
+
+export enum LENIENT_FLAGS {
+ HEADERS = 1 << 0,
+ CHUNKED_LENGTH = 1 << 1,
+ KEEP_ALIVE = 1 << 2,
+ TRANSFER_ENCODING = 1 << 3,
+ VERSION = 1 << 4,
+ DATA_AFTER_CLOSE = 1 << 5,
+ OPTIONAL_LF_AFTER_CR = 1 << 6,
+ OPTIONAL_CRLF_AFTER_CHUNK = 1 << 7,
+ OPTIONAL_CR_BEFORE_LF = 1 << 8,
+ SPACES_AFTER_CHUNK_SIZE = 1 << 9,
+}
+
+export enum METHODS {
+ DELETE = 0,
+ GET = 1,
+ HEAD = 2,
+ POST = 3,
+ PUT = 4,
+ /* pathological */
+ CONNECT = 5,
+ OPTIONS = 6,
+ TRACE = 7,
+ /* WebDAV */
+ COPY = 8,
+ LOCK = 9,
+ MKCOL = 10,
+ MOVE = 11,
+ PROPFIND = 12,
+ PROPPATCH = 13,
+ SEARCH = 14,
+ UNLOCK = 15,
+ BIND = 16,
+ REBIND = 17,
+ UNBIND = 18,
+ ACL = 19,
+ /* subversion */
+ REPORT = 20,
+ MKACTIVITY = 21,
+ CHECKOUT = 22,
+ MERGE = 23,
+ /* upnp */
+ 'M-SEARCH' = 24,
+ NOTIFY = 25,
+ SUBSCRIBE = 26,
+ UNSUBSCRIBE = 27,
+ /* RFC-5789 */
+ PATCH = 28,
+ PURGE = 29,
+ /* CalDAV */
+ MKCALENDAR = 30,
+ /* RFC-2068, section 19.6.1.2 */
+ LINK = 31,
+ UNLINK = 32,
+ /* icecast */
+ SOURCE = 33,
+ /* RFC-7540, section 11.6 */
+ PRI = 34,
+ /* RFC-2326 RTSP */
+ DESCRIBE = 35,
+ ANNOUNCE = 36,
+ SETUP = 37,
+ PLAY = 38,
+ PAUSE = 39,
+ TEARDOWN = 40,
+ GET_PARAMETER = 41,
+ SET_PARAMETER = 42,
+ REDIRECT = 43,
+ RECORD = 44,
+ /* RAOP */
+ FLUSH = 45,
+}
+
+export const METHODS_HTTP = [
+ METHODS.DELETE,
+ METHODS.GET,
+ METHODS.HEAD,
+ METHODS.POST,
+ METHODS.PUT,
+ METHODS.CONNECT,
+ METHODS.OPTIONS,
+ METHODS.TRACE,
+ METHODS.COPY,
+ METHODS.LOCK,
+ METHODS.MKCOL,
+ METHODS.MOVE,
+ METHODS.PROPFIND,
+ METHODS.PROPPATCH,
+ METHODS.SEARCH,
+ METHODS.UNLOCK,
+ METHODS.BIND,
+ METHODS.REBIND,
+ METHODS.UNBIND,
+ METHODS.ACL,
+ METHODS.REPORT,
+ METHODS.MKACTIVITY,
+ METHODS.CHECKOUT,
+ METHODS.MERGE,
+ METHODS['M-SEARCH'],
+ METHODS.NOTIFY,
+ METHODS.SUBSCRIBE,
+ METHODS.UNSUBSCRIBE,
+ METHODS.PATCH,
+ METHODS.PURGE,
+ METHODS.MKCALENDAR,
+ METHODS.LINK,
+ METHODS.UNLINK,
+ METHODS.PRI,
+
+ // TODO(indutny): should we allow it with HTTP?
+ METHODS.SOURCE,
+];
+
+export const METHODS_ICE = [
+ METHODS.SOURCE,
+];
+
+export const METHODS_RTSP = [
+ METHODS.OPTIONS,
+ METHODS.DESCRIBE,
+ METHODS.ANNOUNCE,
+ METHODS.SETUP,
+ METHODS.PLAY,
+ METHODS.PAUSE,
+ METHODS.TEARDOWN,
+ METHODS.GET_PARAMETER,
+ METHODS.SET_PARAMETER,
+ METHODS.REDIRECT,
+ METHODS.RECORD,
+ METHODS.FLUSH,
+
+ // For AirPlay
+ METHODS.GET,
+ METHODS.POST,
+];
+
+export const METHOD_MAP = enumToMap(METHODS);
+export const H_METHOD_MAP: IEnumMap = {};
+
+for (const key of Object.keys(METHOD_MAP)) {
+ if (/^H/.test(key)) {
+ H_METHOD_MAP[key] = METHOD_MAP[key];
+ }
+}
+
+export enum STATUSES {
+ CONTINUE = 100,
+ SWITCHING_PROTOCOLS = 101,
+ PROCESSING = 102,
+ EARLY_HINTS = 103,
+ RESPONSE_IS_STALE = 110, // Unofficial
+ REVALIDATION_FAILED = 111, // Unofficial
+ DISCONNECTED_OPERATION = 112, // Unofficial
+ HEURISTIC_EXPIRATION = 113, // Unofficial
+ MISCELLANEOUS_WARNING = 199, // Unofficial
+ OK = 200,
+ CREATED = 201,
+ ACCEPTED = 202,
+ NON_AUTHORITATIVE_INFORMATION = 203,
+ NO_CONTENT = 204,
+ RESET_CONTENT = 205,
+ PARTIAL_CONTENT = 206,
+ MULTI_STATUS = 207,
+ ALREADY_REPORTED = 208,
+ TRANSFORMATION_APPLIED = 214, // Unofficial
+ IM_USED = 226,
+ MISCELLANEOUS_PERSISTENT_WARNING = 299, // Unofficial
+ MULTIPLE_CHOICES = 300,
+ MOVED_PERMANENTLY = 301,
+ FOUND = 302,
+ SEE_OTHER = 303,
+ NOT_MODIFIED = 304,
+ USE_PROXY = 305,
+ SWITCH_PROXY = 306, // No longer used
+ TEMPORARY_REDIRECT = 307,
+ PERMANENT_REDIRECT = 308,
+ BAD_REQUEST = 400,
+ UNAUTHORIZED = 401,
+ PAYMENT_REQUIRED = 402,
+ FORBIDDEN = 403,
+ NOT_FOUND = 404,
+ METHOD_NOT_ALLOWED = 405,
+ NOT_ACCEPTABLE = 406,
+ PROXY_AUTHENTICATION_REQUIRED = 407,
+ REQUEST_TIMEOUT = 408,
+ CONFLICT = 409,
+ GONE = 410,
+ LENGTH_REQUIRED = 411,
+ PRECONDITION_FAILED = 412,
+ PAYLOAD_TOO_LARGE = 413,
+ URI_TOO_LONG = 414,
+ UNSUPPORTED_MEDIA_TYPE = 415,
+ RANGE_NOT_SATISFIABLE = 416,
+ EXPECTATION_FAILED = 417,
+ IM_A_TEAPOT = 418,
+ PAGE_EXPIRED = 419, // Unofficial
+ ENHANCE_YOUR_CALM = 420, // Unofficial
+ MISDIRECTED_REQUEST = 421,
+ UNPROCESSABLE_ENTITY = 422,
+ LOCKED = 423,
+ FAILED_DEPENDENCY = 424,
+ TOO_EARLY = 425,
+ UPGRADE_REQUIRED = 426,
+ PRECONDITION_REQUIRED = 428,
+ TOO_MANY_REQUESTS = 429,
+ REQUEST_HEADER_FIELDS_TOO_LARGE_UNOFFICIAL = 430, // Unofficial
+ REQUEST_HEADER_FIELDS_TOO_LARGE = 431,
+ LOGIN_TIMEOUT = 440, // Unofficial
+ NO_RESPONSE = 444, // Unofficial
+ RETRY_WITH = 449, // Unofficial
+ BLOCKED_BY_PARENTAL_CONTROL = 450, // Unofficial
+ UNAVAILABLE_FOR_LEGAL_REASONS = 451,
+ CLIENT_CLOSED_LOAD_BALANCED_REQUEST = 460, // Unofficial
+ INVALID_X_FORWARDED_FOR = 463, // Unofficial
+ REQUEST_HEADER_TOO_LARGE = 494, // Unofficial
+ SSL_CERTIFICATE_ERROR = 495, // Unofficial
+ SSL_CERTIFICATE_REQUIRED = 496, // Unofficial
+ HTTP_REQUEST_SENT_TO_HTTPS_PORT = 497, // Unofficial
+ INVALID_TOKEN = 498, // Unofficial
+ CLIENT_CLOSED_REQUEST = 499, // Unofficial
+ INTERNAL_SERVER_ERROR = 500,
+ NOT_IMPLEMENTED = 501,
+ BAD_GATEWAY = 502,
+ SERVICE_UNAVAILABLE = 503,
+ GATEWAY_TIMEOUT = 504,
+ HTTP_VERSION_NOT_SUPPORTED = 505,
+ VARIANT_ALSO_NEGOTIATES = 506,
+ INSUFFICIENT_STORAGE = 507,
+ LOOP_DETECTED = 508,
+ BANDWIDTH_LIMIT_EXCEEDED = 509,
+ NOT_EXTENDED = 510,
+ NETWORK_AUTHENTICATION_REQUIRED = 511,
+ WEB_SERVER_UNKNOWN_ERROR = 520, // Unofficial
+ WEB_SERVER_IS_DOWN = 521, // Unofficial
+ CONNECTION_TIMEOUT = 522, // Unofficial
+ ORIGIN_IS_UNREACHABLE = 523, // Unofficial
+ TIMEOUT_OCCURED = 524, // Unofficial
+ SSL_HANDSHAKE_FAILED = 525, // Unofficial
+ INVALID_SSL_CERTIFICATE = 526, // Unofficial
+ RAILGUN_ERROR = 527, // Unofficial
+ SITE_IS_OVERLOADED = 529, // Unofficial
+ SITE_IS_FROZEN = 530, // Unofficial
+ IDENTITY_PROVIDER_AUTHENTICATION_ERROR = 561, // Unofficial
+ NETWORK_READ_TIMEOUT = 598, // Unofficial
+ NETWORK_CONNECT_TIMEOUT = 599, // Unofficial
+}
+
+export const STATUSES_HTTP = [
+ STATUSES.CONTINUE,
+ STATUSES.SWITCHING_PROTOCOLS,
+ STATUSES.PROCESSING,
+ STATUSES.EARLY_HINTS,
+ STATUSES.RESPONSE_IS_STALE,
+ STATUSES.REVALIDATION_FAILED,
+ STATUSES.DISCONNECTED_OPERATION,
+ STATUSES.HEURISTIC_EXPIRATION,
+ STATUSES.MISCELLANEOUS_WARNING,
+ STATUSES.OK,
+ STATUSES.CREATED,
+ STATUSES.ACCEPTED,
+ STATUSES.NON_AUTHORITATIVE_INFORMATION,
+ STATUSES.NO_CONTENT,
+ STATUSES.RESET_CONTENT,
+ STATUSES.PARTIAL_CONTENT,
+ STATUSES.MULTI_STATUS,
+ STATUSES.ALREADY_REPORTED,
+ STATUSES.TRANSFORMATION_APPLIED,
+ STATUSES.IM_USED,
+ STATUSES.MISCELLANEOUS_PERSISTENT_WARNING,
+ STATUSES.MULTIPLE_CHOICES,
+ STATUSES.MOVED_PERMANENTLY,
+ STATUSES.FOUND,
+ STATUSES.SEE_OTHER,
+ STATUSES.NOT_MODIFIED,
+ STATUSES.USE_PROXY,
+ STATUSES.SWITCH_PROXY,
+ STATUSES.TEMPORARY_REDIRECT,
+ STATUSES.PERMANENT_REDIRECT,
+ STATUSES.BAD_REQUEST,
+ STATUSES.UNAUTHORIZED,
+ STATUSES.PAYMENT_REQUIRED,
+ STATUSES.FORBIDDEN,
+ STATUSES.NOT_FOUND,
+ STATUSES.METHOD_NOT_ALLOWED,
+ STATUSES.NOT_ACCEPTABLE,
+ STATUSES.PROXY_AUTHENTICATION_REQUIRED,
+ STATUSES.REQUEST_TIMEOUT,
+ STATUSES.CONFLICT,
+ STATUSES.GONE,
+ STATUSES.LENGTH_REQUIRED,
+ STATUSES.PRECONDITION_FAILED,
+ STATUSES.PAYLOAD_TOO_LARGE,
+ STATUSES.URI_TOO_LONG,
+ STATUSES.UNSUPPORTED_MEDIA_TYPE,
+ STATUSES.RANGE_NOT_SATISFIABLE,
+ STATUSES.EXPECTATION_FAILED,
+ STATUSES.IM_A_TEAPOT,
+ STATUSES.PAGE_EXPIRED,
+ STATUSES.ENHANCE_YOUR_CALM,
+ STATUSES.MISDIRECTED_REQUEST,
+ STATUSES.UNPROCESSABLE_ENTITY,
+ STATUSES.LOCKED,
+ STATUSES.FAILED_DEPENDENCY,
+ STATUSES.TOO_EARLY,
+ STATUSES.UPGRADE_REQUIRED,
+ STATUSES.PRECONDITION_REQUIRED,
+ STATUSES.TOO_MANY_REQUESTS,
+ STATUSES.REQUEST_HEADER_FIELDS_TOO_LARGE_UNOFFICIAL,
+ STATUSES.REQUEST_HEADER_FIELDS_TOO_LARGE,
+ STATUSES.LOGIN_TIMEOUT,
+ STATUSES.NO_RESPONSE,
+ STATUSES.RETRY_WITH,
+ STATUSES.BLOCKED_BY_PARENTAL_CONTROL,
+ STATUSES.UNAVAILABLE_FOR_LEGAL_REASONS,
+ STATUSES.CLIENT_CLOSED_LOAD_BALANCED_REQUEST,
+ STATUSES.INVALID_X_FORWARDED_FOR,
+ STATUSES.REQUEST_HEADER_TOO_LARGE,
+ STATUSES.SSL_CERTIFICATE_ERROR,
+ STATUSES.SSL_CERTIFICATE_REQUIRED,
+ STATUSES.HTTP_REQUEST_SENT_TO_HTTPS_PORT,
+ STATUSES.INVALID_TOKEN,
+ STATUSES.CLIENT_CLOSED_REQUEST,
+ STATUSES.INTERNAL_SERVER_ERROR,
+ STATUSES.NOT_IMPLEMENTED,
+ STATUSES.BAD_GATEWAY,
+ STATUSES.SERVICE_UNAVAILABLE,
+ STATUSES.GATEWAY_TIMEOUT,
+ STATUSES.HTTP_VERSION_NOT_SUPPORTED,
+ STATUSES.VARIANT_ALSO_NEGOTIATES,
+ STATUSES.INSUFFICIENT_STORAGE,
+ STATUSES.LOOP_DETECTED,
+ STATUSES.BANDWIDTH_LIMIT_EXCEEDED,
+ STATUSES.NOT_EXTENDED,
+ STATUSES.NETWORK_AUTHENTICATION_REQUIRED,
+ STATUSES.WEB_SERVER_UNKNOWN_ERROR,
+ STATUSES.WEB_SERVER_IS_DOWN,
+ STATUSES.CONNECTION_TIMEOUT,
+ STATUSES.ORIGIN_IS_UNREACHABLE,
+ STATUSES.TIMEOUT_OCCURED,
+ STATUSES.SSL_HANDSHAKE_FAILED,
+ STATUSES.INVALID_SSL_CERTIFICATE,
+ STATUSES.RAILGUN_ERROR,
+ STATUSES.SITE_IS_OVERLOADED,
+ STATUSES.SITE_IS_FROZEN,
+ STATUSES.IDENTITY_PROVIDER_AUTHENTICATION_ERROR,
+ STATUSES.NETWORK_READ_TIMEOUT,
+ STATUSES.NETWORK_CONNECT_TIMEOUT,
+];
+
+export enum FINISH {
+ SAFE = 0,
+ SAFE_WITH_CB = 1,
+ UNSAFE = 2,
+}
+
+// Internal
+
+export type CharList = Array<string | number>;
+
+export const ALPHA: CharList = [];
+
+for (let i = 'A'.charCodeAt(0); i <= 'Z'.charCodeAt(0); i++) {
+ // Upper case
+ ALPHA.push(String.fromCharCode(i));
+
+ // Lower case
+ ALPHA.push(String.fromCharCode(i + 0x20));
+}
+
+export const NUM_MAP = {
+ 0: 0, 1: 1, 2: 2, 3: 3, 4: 4,
+ 5: 5, 6: 6, 7: 7, 8: 8, 9: 9,
+};
+
+export const HEX_MAP = {
+ 0: 0, 1: 1, 2: 2, 3: 3, 4: 4,
+ 5: 5, 6: 6, 7: 7, 8: 8, 9: 9,
+ A: 0XA, B: 0XB, C: 0XC, D: 0XD, E: 0XE, F: 0XF,
+ a: 0xa, b: 0xb, c: 0xc, d: 0xd, e: 0xe, f: 0xf,
+};
+
+export const NUM: CharList = [
+ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+];
+
+export const ALPHANUM: CharList = ALPHA.concat(NUM);
+export const MARK: CharList = [ '-', '_', '.', '!', '~', '*', '\'', '(', ')' ];
+export const USERINFO_CHARS: CharList = ALPHANUM
+ .concat(MARK)
+ .concat([ '%', ';', ':', '&', '=', '+', '$', ',' ]);
+
+// TODO(indutny): use RFC
+export const URL_CHAR: CharList = ([
+ '!', '"', '$', '%', '&', '\'',
+ '(', ')', '*', '+', ',', '-', '.', '/',
+ ':', ';', '<', '=', '>',
+ '@', '[', '\\', ']', '^', '_',
+ '`',
+ '{', '|', '}', '~',
+] as CharList).concat(ALPHANUM);
+
+export const HEX: CharList = NUM.concat(
+ [ 'a', 'b', 'c', 'd', 'e', 'f', 'A', 'B', 'C', 'D', 'E', 'F' ]);
+
+/* Tokens as defined by rfc 2616. Also lowercases them.
+ * token = 1*<any CHAR except CTLs or separators>
+ * separators = "(" | ")" | "<" | ">" | "@"
+ * | "," | ";" | ":" | "\" | <">
+ * | "/" | "[" | "]" | "?" | "="
+ * | "{" | "}" | SP | HT
+ */
+export const TOKEN: CharList = ([
+ '!', '#', '$', '%', '&', '\'',
+ '*', '+', '-', '.',
+ '^', '_', '`',
+ '|', '~',
+] as CharList).concat(ALPHANUM);
+
+/*
+ * Verify that a char is a valid visible (printable) US-ASCII
+ * character or %x80-FF
+ */
+export const HEADER_CHARS: CharList = [ '\t' ];
+for (let i = 32; i <= 255; i++) {
+ if (i !== 127) {
+ HEADER_CHARS.push(i);
+ }
+}
+
+// ',' = \x44
+export const CONNECTION_TOKEN_CHARS: CharList =
+ HEADER_CHARS.filter((c: string | number) => c !== 44);
+
+export const QUOTED_STRING: CharList = [ '\t', ' ' ];
+for (let i = 0x21; i <= 0xff; i++) {
+ if (i !== 0x22 && i !== 0x5c) { // All characters in ASCII except \ and "
+ QUOTED_STRING.push(i);
+ }
+}
+
+export const HTAB_SP_VCHAR_OBS_TEXT: CharList = [ '\t', ' ' ];
+
+// VCHAR: https://tools.ietf.org/html/rfc5234#appendix-B.1
+for (let i = 0x21; i <= 0x7E; i++) {
+ HTAB_SP_VCHAR_OBS_TEXT.push(i);
+}
+// OBS_TEXT: https://datatracker.ietf.org/doc/html/rfc9110#name-collected-abnf
+for (let i = 0x80; i <= 0xff; i++) {
+ HTAB_SP_VCHAR_OBS_TEXT.push(i);
+}
+
+export const MAJOR = NUM_MAP;
+export const MINOR = MAJOR;
+
+export enum HEADER_STATE {
+ GENERAL = 0,
+ CONNECTION = 1,
+ CONTENT_LENGTH = 2,
+ TRANSFER_ENCODING = 3,
+ UPGRADE = 4,
+
+ CONNECTION_KEEP_ALIVE = 5,
+ CONNECTION_CLOSE = 6,
+ CONNECTION_UPGRADE = 7,
+ TRANSFER_ENCODING_CHUNKED = 8,
+}
+
+export const SPECIAL_HEADERS = {
+ 'connection': HEADER_STATE.CONNECTION,
+ 'content-length': HEADER_STATE.CONTENT_LENGTH,
+ 'proxy-connection': HEADER_STATE.CONNECTION,
+ 'transfer-encoding': HEADER_STATE.TRANSFER_ENCODING,
+ 'upgrade': HEADER_STATE.UPGRADE,
+};
diff --git a/llhttp/src/llhttp/http.ts b/llhttp/src/llhttp/http.ts
new file mode 100644
index 0000000..6a201ff
--- /dev/null
+++ b/llhttp/src/llhttp/http.ts
@@ -0,0 +1,1299 @@
+import * as assert from 'assert';
+import { LLParse, source } from 'llparse';
+
+import Match = source.node.Match;
+import Node = source.node.Node;
+
+import {
+ CharList,
+ CONNECTION_TOKEN_CHARS, ERROR, FINISH, FLAGS, H_METHOD_MAP, HEADER_CHARS,
+ HEADER_STATE, HEX_MAP, HTAB_SP_VCHAR_OBS_TEXT,
+ LENIENT_FLAGS,
+ MAJOR, METHOD_MAP, METHODS, METHODS_HTTP, METHODS_ICE, METHODS_RTSP,
+ MINOR, NUM_MAP, QUOTED_STRING, SPECIAL_HEADERS,
+ TOKEN, TYPE,
+} from './constants';
+import { URL } from './url';
+
+type MaybeNode = string | Match | Node;
+
+const NODES: ReadonlyArray<string> = [
+ 'start',
+ 'after_start',
+ 'start_req',
+ 'after_start_req',
+ 'start_res',
+ 'start_req_or_res',
+
+ 'req_or_res_method',
+
+ 'res_http_major',
+ 'res_http_dot',
+ 'res_http_minor',
+ 'res_http_end',
+ 'res_after_version',
+ 'res_status_code_digit_1',
+ 'res_status_code_digit_2',
+ 'res_status_code_digit_3',
+ 'res_status_code_otherwise',
+ 'res_status_start',
+ 'res_status',
+ 'res_line_almost_done',
+
+ 'req_first_space_before_url',
+ 'req_spaces_before_url',
+ 'req_http_start',
+ 'req_http_version',
+ 'req_http_major',
+ 'req_http_dot',
+ 'req_http_minor',
+ 'req_http_end',
+ 'req_http_complete',
+ 'req_http_complete_crlf',
+
+ 'req_pri_upgrade',
+
+ 'headers_start',
+ 'header_field_start',
+ 'header_field',
+ 'header_field_colon',
+ 'header_field_colon_discard_ws',
+ 'header_field_general',
+ 'header_field_general_otherwise',
+ 'header_value_discard_ws',
+ 'header_value_discard_ws_almost_done',
+ 'header_value_discard_lws',
+ 'header_value_start',
+ 'header_value',
+ 'header_value_otherwise',
+ 'header_value_lenient',
+ 'header_value_lenient_failed',
+ 'header_value_lws',
+ 'header_value_te_chunked',
+ 'header_value_te_chunked_last',
+ 'header_value_te_token',
+ 'header_value_te_token_ows',
+ 'header_value_content_length_once',
+ 'header_value_content_length',
+ 'header_value_content_length_ws',
+ 'header_value_connection',
+ 'header_value_connection_ws',
+ 'header_value_connection_token',
+ 'header_value_almost_done',
+
+ 'headers_almost_done',
+ 'headers_done',
+
+ 'chunk_size_start',
+ 'chunk_size_digit',
+ 'chunk_size',
+ 'chunk_size_otherwise',
+ 'chunk_size_almost_done',
+ 'chunk_size_almost_done_lf',
+ 'chunk_extensions',
+ 'chunk_extension_name',
+ 'chunk_extension_value',
+ 'chunk_extension_quoted_value',
+ 'chunk_extension_quoted_value_quoted_pair',
+ 'chunk_extension_quoted_value_done',
+ 'chunk_data',
+ 'chunk_data_almost_done',
+ 'chunk_complete',
+ 'body_identity',
+ 'body_identity_eof',
+
+ 'message_done',
+
+ 'eof',
+ 'cleanup',
+ 'closed',
+ 'restart',
+];
+
+interface ISpanMap {
+ readonly status: source.Span;
+ readonly method: source.Span;
+ readonly version: source.Span;
+ readonly headerField: source.Span;
+ readonly headerValue: source.Span;
+ readonly chunkExtensionName: source.Span;
+ readonly chunkExtensionValue: source.Span;
+ readonly body: source.Span;
+}
+
+interface ICallbackMap {
+ readonly onMessageBegin: source.code.Code;
+ readonly onUrlComplete: source.code.Code;
+ readonly onMethodComplete: source.code.Code;
+ readonly onVersionComplete: source.code.Code;
+ readonly onStatusComplete: source.code.Code;
+ readonly beforeHeadersComplete: source.code.Code;
+ readonly onHeaderFieldComplete: source.code.Code;
+ readonly onHeaderValueComplete: source.code.Code;
+ readonly onHeadersComplete: source.code.Code;
+ readonly afterHeadersComplete: source.code.Code;
+ readonly onChunkHeader: source.code.Code;
+ readonly onChunkExtensionName: source.code.Code;
+ readonly onChunkExtensionValue: source.code.Code;
+ readonly onChunkComplete: source.code.Code;
+ readonly onMessageComplete: source.code.Code;
+ readonly afterMessageComplete: source.code.Code;
+ readonly onReset: source.code.Code;
+}
+
+interface IMulTargets {
+ readonly overflow: string | Node;
+ readonly success: string | Node;
+}
+
+interface IMulOptions {
+ readonly base: number;
+ readonly max?: number;
+ readonly signed: boolean;
+}
+
+interface IIsEqualTargets {
+ readonly equal: string | Node;
+ readonly notEqual: string | Node;
+}
+
+export interface IHTTPResult {
+ readonly entry: Node;
+}
+
+export class HTTP {
+ private readonly url: URL;
+ private readonly TOKEN: CharList;
+ private readonly span: ISpanMap;
+ private readonly callback: ICallbackMap;
+ private readonly nodes: Map<string, Match> = new Map();
+
+ constructor(private readonly llparse: LLParse) {
+ const p = llparse;
+
+ this.url = new URL(p);
+ this.TOKEN = TOKEN;
+
+ this.span = {
+ body: p.span(p.code.span('llhttp__on_body')),
+ chunkExtensionName: p.span(p.code.span('llhttp__on_chunk_extension_name')),
+ chunkExtensionValue: p.span(p.code.span('llhttp__on_chunk_extension_value')),
+ headerField: p.span(p.code.span('llhttp__on_header_field')),
+ headerValue: p.span(p.code.span('llhttp__on_header_value')),
+ method: p.span(p.code.span('llhttp__on_method')),
+ status: p.span(p.code.span('llhttp__on_status')),
+ version: p.span(p.code.span('llhttp__on_version')),
+ };
+
+ /* tslint:disable:object-literal-sort-keys */
+ this.callback = {
+ // User callbacks
+ onUrlComplete: p.code.match('llhttp__on_url_complete'),
+ onStatusComplete: p.code.match('llhttp__on_status_complete'),
+ onMethodComplete: p.code.match('llhttp__on_method_complete'),
+ onVersionComplete: p.code.match('llhttp__on_version_complete'),
+ onHeaderFieldComplete: p.code.match('llhttp__on_header_field_complete'),
+ onHeaderValueComplete: p.code.match('llhttp__on_header_value_complete'),
+ onHeadersComplete: p.code.match('llhttp__on_headers_complete'),
+ onMessageBegin: p.code.match('llhttp__on_message_begin'),
+ onMessageComplete: p.code.match('llhttp__on_message_complete'),
+ onChunkHeader: p.code.match('llhttp__on_chunk_header'),
+ onChunkExtensionName: p.code.match('llhttp__on_chunk_extension_name_complete'),
+ onChunkExtensionValue: p.code.match('llhttp__on_chunk_extension_value_complete'),
+ onChunkComplete: p.code.match('llhttp__on_chunk_complete'),
+ onReset: p.code.match('llhttp__on_reset'),
+
+ // Internal callbacks `src/http.c`
+ beforeHeadersComplete:
+ p.code.match('llhttp__before_headers_complete'),
+ afterHeadersComplete: p.code.match('llhttp__after_headers_complete'),
+ afterMessageComplete: p.code.match('llhttp__after_message_complete'),
+ };
+ /* tslint:enable:object-literal-sort-keys */
+
+ for (const name of NODES) {
+ this.nodes.set(name, p.node(name) as Match);
+ }
+ }
+
+ public build(): IHTTPResult {
+ const p = this.llparse;
+
+ p.property('i64', 'content_length');
+ p.property('i8', 'type');
+ p.property('i8', 'method');
+ p.property('i8', 'http_major');
+ p.property('i8', 'http_minor');
+ p.property('i8', 'header_state');
+ p.property('i16', 'lenient_flags');
+ p.property('i8', 'upgrade');
+ p.property('i8', 'finish');
+ p.property('i16', 'flags');
+ p.property('i16', 'status_code');
+ p.property('i8', 'initial_message_completed');
+
+ // Verify defaults
+ assert.strictEqual(FINISH.SAFE, 0);
+ assert.strictEqual(TYPE.BOTH, 0);
+
+ // Shared settings (to be used in C wrapper)
+ p.property('ptr', 'settings');
+
+ this.buildLine();
+ this.buildHeaders();
+
+ return {
+ entry: this.node('start'),
+ };
+ }
+
+ private buildLine(): void {
+ const p = this.llparse;
+ const span = this.span;
+ const n = (name: string): Match => this.node<Match>(name);
+
+ const url = this.url.build();
+
+ const switchType = this.load('type', {
+ [TYPE.REQUEST]: n('start_req'),
+ [TYPE.RESPONSE]: n('start_res'),
+ }, n('start_req_or_res'));
+
+ n('start')
+ .match([ '\r', '\n' ], n('start'))
+ .otherwise(
+ this.load('initial_message_completed', {
+ 1: this.invokePausable('on_reset', ERROR.CB_RESET, n('after_start')),
+ }, n('after_start')),
+ );
+
+ n('after_start').otherwise(
+ this.update(
+ 'finish',
+ FINISH.UNSAFE,
+ this.invokePausable('on_message_begin', ERROR.CB_MESSAGE_BEGIN, switchType),
+ ),
+ );
+
+ n('start_req_or_res')
+ .peek('H', this.span.method.start(n('req_or_res_method')))
+ .otherwise(this.update('type', TYPE.REQUEST, 'start_req'));
+
+ n('req_or_res_method')
+ .select(H_METHOD_MAP, this.store('method',
+ this.update('type', TYPE.REQUEST, this.span.method.end(
+ this.invokePausable('on_method_complete', ERROR.CB_METHOD_COMPLETE, n('req_first_space_before_url')),
+ )),
+ ))
+ .match('HTTP/', this.span.method.end(this.update('type', TYPE.RESPONSE,
+ this.span.version.start(n('res_http_major')))))
+ .otherwise(p.error(ERROR.INVALID_CONSTANT, 'Invalid word encountered'));
+
+ const checkVersion = (destination: string): Node => {
+ const node = n(destination);
+ const errorNode = this.span.version.end(p.error(ERROR.INVALID_VERSION, 'Invalid HTTP version'));
+
+ return this.testLenientFlags(LENIENT_FLAGS.VERSION,
+ {
+ 1: node,
+ },
+ this.load('http_major', {
+ 0: this.load('http_minor', {
+ 9: node,
+ }, errorNode),
+ 1: this.load('http_minor', {
+ 0: node,
+ 1: node,
+ }, errorNode),
+ 2: this.load('http_minor', {
+ 0: node,
+ }, errorNode),
+ }, errorNode),
+ );
+ };
+
+ const checkIfAllowLFWithoutCR = (success: Node, failure: Node) => {
+ return this.testLenientFlags(LENIENT_FLAGS.OPTIONAL_CR_BEFORE_LF, { 1: success }, failure);
+ };
+
+ // Response
+ n('start_res')
+ .match('HTTP/', span.version.start(n('res_http_major')))
+ .otherwise(p.error(ERROR.INVALID_CONSTANT, 'Expected HTTP/'));
+
+ n('res_http_major')
+ .select(MAJOR, this.store('http_major', 'res_http_dot'))
+ .otherwise(this.span.version.end(p.error(ERROR.INVALID_VERSION, 'Invalid major version')));
+
+ n('res_http_dot')
+ .match('.', n('res_http_minor'))
+ .otherwise(this.span.version.end(p.error(ERROR.INVALID_VERSION, 'Expected dot')));
+
+ n('res_http_minor')
+ .select(MINOR, this.store('http_minor', checkVersion('res_http_end')))
+ .otherwise(this.span.version.end(p.error(ERROR.INVALID_VERSION, 'Invalid minor version')));
+
+ n('res_http_end')
+ .otherwise(this.span.version.end(
+ this.invokePausable('on_version_complete', ERROR.CB_VERSION_COMPLETE, 'res_after_version'),
+ ));
+
+ n('res_after_version')
+ .match(' ', this.update('status_code', 0, 'res_status_code_digit_1'))
+ .otherwise(p.error(ERROR.INVALID_VERSION,
+ 'Expected space after version'));
+
+ n('res_status_code_digit_1')
+ .select(NUM_MAP, this.mulAdd('status_code', {
+ overflow: p.error(ERROR.INVALID_STATUS, 'Invalid status code'),
+ success: 'res_status_code_digit_2',
+ }))
+ .otherwise(p.error(ERROR.INVALID_STATUS, 'Invalid status code'));
+
+ n('res_status_code_digit_2')
+ .select(NUM_MAP, this.mulAdd('status_code', {
+ overflow: p.error(ERROR.INVALID_STATUS, 'Invalid status code'),
+ success: 'res_status_code_digit_3',
+ }))
+ .otherwise(p.error(ERROR.INVALID_STATUS, 'Invalid status code'));
+
+ n('res_status_code_digit_3')
+ .select(NUM_MAP, this.mulAdd('status_code', {
+ overflow: p.error(ERROR.INVALID_STATUS, 'Invalid status code'),
+ success: 'res_status_code_otherwise',
+ }))
+ .otherwise(p.error(ERROR.INVALID_STATUS, 'Invalid status code'));
+
+ const onStatusComplete = this.invokePausable(
+ 'on_status_complete', ERROR.CB_STATUS_COMPLETE, n('headers_start'),
+ );
+
+ n('res_status_code_otherwise')
+ .match(' ', n('res_status_start'))
+ .match('\r', n('res_line_almost_done'))
+ .match(
+ '\n',
+ checkIfAllowLFWithoutCR(
+ onStatusComplete,
+ p.error(ERROR.INVALID_STATUS, 'Invalid response status'),
+ ),
+ )
+ .otherwise(p.error(ERROR.INVALID_STATUS, 'Invalid response status'));
+
+ n('res_status_start')
+ .otherwise(span.status.start(n('res_status')));
+
+ n('res_status')
+ .peek('\r', span.status.end().skipTo(n('res_line_almost_done')))
+ .peek(
+ '\n',
+ span.status.end().skipTo(
+ checkIfAllowLFWithoutCR(
+ onStatusComplete,
+ p.error(ERROR.CR_EXPECTED, 'Missing expected CR after response line'),
+ ),
+ ),
+ )
+ .skipTo(n('res_status'));
+
+ n('res_line_almost_done')
+ .match(['\r', '\n'], onStatusComplete)
+ .otherwise(this.testLenientFlags(LENIENT_FLAGS.OPTIONAL_LF_AFTER_CR, {
+ 1: onStatusComplete,
+ }, p.error(ERROR.STRICT, 'Expected LF after CR')));
+
+ // Request
+ n('start_req').otherwise(this.span.method.start(n('after_start_req')));
+
+ n('after_start_req')
+ .select(METHOD_MAP, this.store('method', this.span.method.end(
+ this.invokePausable('on_method_complete', ERROR.CB_METHOD_COMPLETE, n('req_first_space_before_url'),
+ ))))
+ .otherwise(p.error(ERROR.INVALID_METHOD, 'Invalid method encountered'));
+
+ n('req_first_space_before_url')
+ .match(' ', n('req_spaces_before_url'))
+ .otherwise(p.error(ERROR.INVALID_METHOD, 'Expected space after method'));
+
+ n('req_spaces_before_url')
+ .match(' ', n('req_spaces_before_url'))
+ .otherwise(this.isEqual('method', METHODS.CONNECT, {
+ equal: url.entry.connect,
+ notEqual: url.entry.normal,
+ }));
+
+ const onUrlCompleteHTTP = this.invokePausable(
+ 'on_url_complete', ERROR.CB_URL_COMPLETE, n('req_http_start'),
+ );
+
+ url.exit.toHTTP
+ .otherwise(onUrlCompleteHTTP);
+
+ const onUrlCompleteHTTP09 = this.invokePausable(
+ 'on_url_complete', ERROR.CB_URL_COMPLETE, n('headers_start'),
+ );
+
+ url.exit.toHTTP09
+ .otherwise(
+ this.update('http_major', 0,
+ this.update('http_minor', 9, onUrlCompleteHTTP09)),
+ );
+
+ const checkMethod = (methods: METHODS[], error: string): Node => {
+ const success = n('req_http_version');
+ const failure = p.error(ERROR.INVALID_CONSTANT, error);
+
+ const map: { [key: number]: Node } = {};
+ for (const method of methods) {
+ map[method] = success;
+ }
+
+ return this.load('method', map, failure);
+ };
+
+ n('req_http_start')
+ .match('HTTP/', checkMethod(METHODS_HTTP,
+ 'Invalid method for HTTP/x.x request'))
+ .match('RTSP/', checkMethod(METHODS_RTSP,
+ 'Invalid method for RTSP/x.x request'))
+ .match('ICE/', checkMethod(METHODS_ICE,
+ 'Expected SOURCE method for ICE/x.x request'))
+ .match(' ', n('req_http_start'))
+ .otherwise(p.error(ERROR.INVALID_CONSTANT, 'Expected HTTP/'));
+
+ n('req_http_version').otherwise(span.version.start(n('req_http_major')));
+
+ n('req_http_major')
+ .select(MAJOR, this.store('http_major', 'req_http_dot'))
+ .otherwise(this.span.version.end(p.error(ERROR.INVALID_VERSION, 'Invalid major version')));
+
+ n('req_http_dot')
+ .match('.', n('req_http_minor'))
+ .otherwise(this.span.version.end(p.error(ERROR.INVALID_VERSION, 'Expected dot')));
+
+ n('req_http_minor')
+ .select(MINOR, this.store('http_minor', checkVersion('req_http_end')))
+ .otherwise(this.span.version.end(p.error(ERROR.INVALID_VERSION, 'Invalid minor version')));
+
+ n('req_http_end').otherwise(
+ span.version.end(
+ this.invokePausable(
+ 'on_version_complete',
+ ERROR.CB_VERSION_COMPLETE,
+ this.load('method', {
+ [METHODS.PRI]: n('req_pri_upgrade'),
+ }, n('req_http_complete')),
+ ),
+ ),
+ );
+
+ n('req_http_complete')
+ .match('\r', n('req_http_complete_crlf'))
+ .match(
+ '\n',
+ checkIfAllowLFWithoutCR(
+ n('req_http_complete_crlf'),
+ p.error(ERROR.INVALID_VERSION, 'Expected CRLF after version'),
+ ),
+ )
+ .otherwise(p.error(ERROR.INVALID_VERSION, 'Expected CRLF after version'));
+
+ n('req_http_complete_crlf')
+ .match('\n', n('headers_start'))
+ .otherwise(this.testLenientFlags(LENIENT_FLAGS.OPTIONAL_LF_AFTER_CR, {
+ 1: n('headers_start'),
+ }, p.error(ERROR.STRICT, 'Expected CRLF after version')));
+
+ n('req_pri_upgrade')
+ .match('\r\n\r\nSM\r\n\r\n',
+ p.error(ERROR.PAUSED_H2_UPGRADE, 'Pause on PRI/Upgrade'))
+ .otherwise(
+ p.error(ERROR.INVALID_VERSION, 'Expected HTTP/2 Connection Preface'));
+ }
+
+ private buildHeaders(): void {
+ this.buildHeaderField();
+ this.buildHeaderValue();
+ }
+
+ private buildHeaderField(): void {
+ const p = this.llparse;
+ const span = this.span;
+ const n = (name: string): Match => this.node<Match>(name);
+
+ const onInvalidHeaderFieldChar =
+ p.error(ERROR.INVALID_HEADER_TOKEN, 'Invalid header field char');
+
+ n('headers_start')
+ .match(' ',
+ this.testLenientFlags(LENIENT_FLAGS.HEADERS, {
+ 1: n('header_field_start'),
+ }, p.error(ERROR.UNEXPECTED_SPACE, 'Unexpected space after start line')),
+ )
+ .otherwise(n('header_field_start'));
+
+ n('header_field_start')
+ .match('\r', n('headers_almost_done'))
+ .match('\n',
+ this.testLenientFlags(LENIENT_FLAGS.OPTIONAL_CR_BEFORE_LF, {
+ 1: this.testFlags(FLAGS.TRAILING, {
+ 1: this.invokePausable('on_chunk_complete',
+ ERROR.CB_CHUNK_COMPLETE, 'message_done'),
+ }).otherwise(this.headersCompleted()),
+ }, onInvalidHeaderFieldChar),
+ )
+ .peek(':', p.error(ERROR.INVALID_HEADER_TOKEN, 'Invalid header token'))
+ .otherwise(span.headerField.start(n('header_field')));
+
+ n('header_field')
+ .transform(p.transform.toLower())
+ // Match headers that need special treatment
+ .select(SPECIAL_HEADERS, this.store('header_state', 'header_field_colon'))
+ .otherwise(this.resetHeaderState('header_field_general'));
+
+ /* https://www.rfc-editor.org/rfc/rfc7230.html#section-3.3.3, paragraph 3.
+ *
+ * If a message is received with both a Transfer-Encoding and a
+ * Content-Length header field, the Transfer-Encoding overrides the
+ * Content-Length. Such a message might indicate an attempt to
+ * perform request smuggling (Section 9.5) or response splitting
+ * (Section 9.4) and **ought to be handled as an error**. A sender MUST
+ * remove the received Content-Length field prior to forwarding such
+ * a message downstream.
+ *
+ * Since llhttp 9, we go for the stricter approach and treat this as an error.
+ */
+ const checkInvalidTransferEncoding = (otherwise: Node) => {
+ return this.testFlags(FLAGS.CONTENT_LENGTH, {
+ 1: this.testLenientFlags(LENIENT_FLAGS.CHUNKED_LENGTH, {
+ 0: p.error(ERROR.INVALID_TRANSFER_ENCODING, "Transfer-Encoding can't be present with Content-Length"),
+ }).otherwise(otherwise),
+ }).otherwise(otherwise);
+ };
+
+ const checkInvalidContentLength = (otherwise: Node) => {
+ return this.testFlags(FLAGS.TRANSFER_ENCODING, {
+ 1: this.testLenientFlags(LENIENT_FLAGS.CHUNKED_LENGTH, {
+ 0: p.error(ERROR.INVALID_CONTENT_LENGTH, "Content-Length can't be present with Transfer-Encoding"),
+ }).otherwise(otherwise),
+ }).otherwise(otherwise);
+ };
+
+ const onHeaderFieldComplete = this.invokePausable(
+ 'on_header_field_complete', ERROR.CB_HEADER_FIELD_COMPLETE,
+ this.load('header_state', {
+ [HEADER_STATE.TRANSFER_ENCODING]: checkInvalidTransferEncoding(n('header_value_discard_ws')),
+ [HEADER_STATE.CONTENT_LENGTH]: checkInvalidContentLength(n('header_value_discard_ws')),
+ }, 'header_value_discard_ws'),
+ );
+
+ const checkLenientFlagsOnColon =
+ this.testLenientFlags(LENIENT_FLAGS.HEADERS, {
+ 1: n('header_field_colon_discard_ws'),
+ }, span.headerField.end().skipTo(onInvalidHeaderFieldChar));
+
+ n('header_field_colon')
+ // https://datatracker.ietf.org/doc/html/rfc7230#section-3.2.4
+ // Whitespace character is not allowed between the header field-name
+ // and colon. If the next token matches whitespace then throw an error.
+ //
+ // Add a check for the lenient flag. If the lenient flag is set, the
+ // whitespace token is allowed to support legacy code not following
+ // http specs.
+ .peek(' ', checkLenientFlagsOnColon)
+ .peek(':', span.headerField.end().skipTo(onHeaderFieldComplete))
+ // Fallback to general header, there're additional characters:
+ // `Connection-Duration` instead of `Connection` and so on.
+ .otherwise(this.resetHeaderState('header_field_general'));
+
+ n('header_field_colon_discard_ws')
+ .match(' ', n('header_field_colon_discard_ws'))
+ .otherwise(n('header_field_colon'));
+
+ n('header_field_general')
+ .match(this.TOKEN, n('header_field_general'))
+ .otherwise(n('header_field_general_otherwise'));
+
+ // Just a performance optimization, split the node so that the fast case
+ // remains in `header_field_general`
+ n('header_field_general_otherwise')
+ .peek(':', span.headerField.end().skipTo(onHeaderFieldComplete))
+ .otherwise(p.error(ERROR.INVALID_HEADER_TOKEN, 'Invalid header token'));
+ }
+
+ private buildHeaderValue(): void {
+ const p = this.llparse;
+ const span = this.span;
+ const callback = this.callback;
+ const n = (name: string): Match => this.node<Match>(name);
+
+ const fallback = this.resetHeaderState('header_value');
+
+ n('header_value_discard_ws')
+ .match([ ' ', '\t' ], n('header_value_discard_ws'))
+ .match('\r', n('header_value_discard_ws_almost_done'))
+ .match('\n', this.testLenientFlags(LENIENT_FLAGS.OPTIONAL_CR_BEFORE_LF, {
+ 1: n('header_value_discard_lws'),
+ }, p.error(ERROR.INVALID_HEADER_TOKEN, 'Invalid header value char')))
+ .otherwise(span.headerValue.start(n('header_value_start')));
+
+ n('header_value_discard_ws_almost_done')
+ .match('\n', n('header_value_discard_lws'))
+ .otherwise(
+ this.testLenientFlags(LENIENT_FLAGS.HEADERS, {
+ 1: n('header_value_discard_lws'),
+ }, p.error(ERROR.STRICT, 'Expected LF after CR')),
+ );
+
+ const onHeaderValueComplete = this.invokePausable(
+ 'on_header_value_complete', ERROR.CB_HEADER_VALUE_COMPLETE, n('header_field_start'),
+ );
+
+ const emptyContentLengthError = p.error(
+ ERROR.INVALID_CONTENT_LENGTH, 'Empty Content-Length');
+ const checkContentLengthEmptiness = this.load('header_state', {
+ [HEADER_STATE.CONTENT_LENGTH]: emptyContentLengthError,
+ }, this.setHeaderFlags(
+ this.emptySpan(span.headerValue, onHeaderValueComplete)));
+
+ n('header_value_discard_lws')
+ .match([ ' ', '\t' ], this.testLenientFlags(LENIENT_FLAGS.HEADERS, {
+ 1: n('header_value_discard_ws'),
+ }, p.error(ERROR.INVALID_HEADER_TOKEN, 'Invalid header value char')))
+ .otherwise(checkContentLengthEmptiness);
+
+ // Multiple `Transfer-Encoding` headers should be treated as one, but with
+ // values separate by a comma.
+ //
+ // See: https://tools.ietf.org/html/rfc7230#section-3.2.2
+ const toTransferEncoding = this.unsetFlag(
+ FLAGS.CHUNKED,
+ 'header_value_te_chunked');
+
+ // Once chunked has been selected, no other encoding is possible in requests
+ // https://datatracker.ietf.org/doc/html/rfc7230#section-3.3.1
+ const forbidAfterChunkedInRequest = (otherwise: Node) => {
+ return this.load('type', {
+ [TYPE.REQUEST]: this.testLenientFlags(LENIENT_FLAGS.TRANSFER_ENCODING, {
+ 0: span.headerValue.end().skipTo(
+ p.error(ERROR.INVALID_TRANSFER_ENCODING, 'Invalid `Transfer-Encoding` header value'),
+ ),
+ }).otherwise(otherwise),
+ }, otherwise);
+ };
+
+ n('header_value_start')
+ .otherwise(this.load('header_state', {
+ [HEADER_STATE.UPGRADE]: this.setFlag(FLAGS.UPGRADE, fallback),
+ [HEADER_STATE.TRANSFER_ENCODING]: this.testFlags(
+ FLAGS.CHUNKED,
+ {
+ 1: forbidAfterChunkedInRequest(this.setFlag(FLAGS.TRANSFER_ENCODING, toTransferEncoding)),
+ },
+ this.setFlag(FLAGS.TRANSFER_ENCODING, toTransferEncoding)),
+ [HEADER_STATE.CONTENT_LENGTH]: n('header_value_content_length_once'),
+ [HEADER_STATE.CONNECTION]: n('header_value_connection'),
+ }, 'header_value'));
+
+ //
+ // Transfer-Encoding
+ //
+
+ n('header_value_te_chunked')
+ .transform(p.transform.toLowerUnsafe())
+ .match(
+ 'chunked',
+ n('header_value_te_chunked_last'),
+ )
+ .otherwise(n('header_value_te_token'));
+
+ n('header_value_te_chunked_last')
+ .match(' ', n('header_value_te_chunked_last'))
+ .peek([ '\r', '\n' ], this.update('header_state',
+ HEADER_STATE.TRANSFER_ENCODING_CHUNKED,
+ 'header_value_otherwise'))
+ .peek(',', forbidAfterChunkedInRequest(n('header_value_te_chunked')))
+ .otherwise(n('header_value_te_token'));
+
+ n('header_value_te_token')
+ .match(',', n('header_value_te_token_ows'))
+ .match(CONNECTION_TOKEN_CHARS, n('header_value_te_token'))
+ .otherwise(fallback);
+
+ n('header_value_te_token_ows')
+ .match([ ' ', '\t' ], n('header_value_te_token_ows'))
+ .otherwise(n('header_value_te_chunked'));
+
+ //
+ // Content-Length
+ //
+
+ const invalidContentLength = (reason: string): Node => {
+ // End span for easier testing
+ // TODO(indutny): minimize code size
+ return span.headerValue.end()
+ .otherwise(p.error(ERROR.INVALID_CONTENT_LENGTH, reason));
+ };
+
+ n('header_value_content_length_once')
+ .otherwise(this.testFlags(FLAGS.CONTENT_LENGTH, {
+ 0: n('header_value_content_length'),
+ }, p.error(ERROR.UNEXPECTED_CONTENT_LENGTH, 'Duplicate Content-Length')));
+
+ n('header_value_content_length')
+ .select(NUM_MAP, this.mulAdd('content_length', {
+ overflow: invalidContentLength('Content-Length overflow'),
+ success: 'header_value_content_length',
+ }))
+ .otherwise(n('header_value_content_length_ws'));
+
+ n('header_value_content_length_ws')
+ .match(' ', n('header_value_content_length_ws'))
+ .peek([ '\r', '\n' ],
+ this.setFlag(FLAGS.CONTENT_LENGTH, 'header_value_otherwise'))
+ .otherwise(invalidContentLength('Invalid character in Content-Length'));
+
+ //
+ // Connection
+ //
+
+ n('header_value_connection')
+ .transform(p.transform.toLower())
+ // TODO(indutny): extra node for token back-edge?
+ // Skip lws
+ .match([ ' ', '\t' ], n('header_value_connection'))
+ .match(
+ 'close',
+ this.update('header_state', HEADER_STATE.CONNECTION_CLOSE,
+ 'header_value_connection_ws'),
+ )
+ .match(
+ 'upgrade',
+ this.update('header_state', HEADER_STATE.CONNECTION_UPGRADE,
+ 'header_value_connection_ws'),
+ )
+ .match(
+ 'keep-alive',
+ this.update('header_state', HEADER_STATE.CONNECTION_KEEP_ALIVE,
+ 'header_value_connection_ws'),
+ )
+ .otherwise(n('header_value_connection_token'));
+
+ n('header_value_connection_ws')
+ .match(',', this.setHeaderFlags('header_value_connection'))
+ .match(' ', n('header_value_connection_ws'))
+ .peek([ '\r', '\n' ], n('header_value_otherwise'))
+ .otherwise(this.resetHeaderState('header_value_connection_token'));
+
+ n('header_value_connection_token')
+ .match(',', n('header_value_connection'))
+ .match(CONNECTION_TOKEN_CHARS,
+ n('header_value_connection_token'))
+ .otherwise(n('header_value_otherwise'));
+
+ // Split for performance reasons
+ n('header_value')
+ .match(HEADER_CHARS, n('header_value'))
+ .otherwise(n('header_value_otherwise'));
+
+ const checkIfAllowLFWithoutCR = (success: Node, failure: Node) => {
+ return this.testLenientFlags(LENIENT_FLAGS.OPTIONAL_CR_BEFORE_LF, { 1: success }, failure);
+ };
+
+ const checkLenient = this.testLenientFlags(LENIENT_FLAGS.HEADERS, {
+ 1: n('header_value_lenient'),
+ }, span.headerValue.end(p.error(ERROR.INVALID_HEADER_TOKEN, 'Invalid header value char')));
+
+ n('header_value_otherwise')
+ .peek('\r', span.headerValue.end().skipTo(n('header_value_almost_done')))
+ .peek(
+ '\n',
+ span.headerValue.end(
+ checkIfAllowLFWithoutCR(
+ n('header_value_almost_done'),
+ p.error(ERROR.CR_EXPECTED, 'Missing expected CR after header value'),
+ ),
+ ),
+ )
+ .otherwise(checkLenient);
+
+ n('header_value_lenient')
+ .peek('\r', span.headerValue.end().skipTo(n('header_value_almost_done')))
+ .peek('\n', span.headerValue.end(n('header_value_almost_done')))
+ .skipTo(n('header_value_lenient'));
+
+ n('header_value_almost_done')
+ .match('\n', n('header_value_lws'))
+ .otherwise(p.error(ERROR.LF_EXPECTED,
+ 'Missing expected LF after header value'));
+
+ n('header_value_lws')
+ .peek([ ' ', '\t' ],
+ this.load('header_state', {
+ [HEADER_STATE.TRANSFER_ENCODING_CHUNKED]:
+ this.resetHeaderState(span.headerValue.start(n('header_value_start'))),
+ }, span.headerValue.start(n('header_value_start'))))
+ .otherwise(this.setHeaderFlags(onHeaderValueComplete));
+
+ const checkTrailing = this.testFlags(FLAGS.TRAILING, {
+ 1: this.invokePausable('on_chunk_complete',
+ ERROR.CB_CHUNK_COMPLETE, 'message_done'),
+ }).otherwise(this.headersCompleted());
+
+ n('headers_almost_done')
+ .match('\n', checkTrailing)
+ .otherwise(
+ this.testLenientFlags(LENIENT_FLAGS.OPTIONAL_LF_AFTER_CR, {
+ 1: checkTrailing,
+ }, p.error(ERROR.STRICT, 'Expected LF after headers')));
+
+ const upgradePause = p.pause(ERROR.PAUSED_UPGRADE,
+ 'Pause on CONNECT/Upgrade');
+
+ const afterHeadersComplete = p.invoke(callback.afterHeadersComplete, {
+ 1: this.invokePausable('on_message_complete',
+ ERROR.CB_MESSAGE_COMPLETE, upgradePause),
+ 2: n('chunk_size_start'),
+ 3: n('body_identity'),
+ 4: n('body_identity_eof'),
+
+ // non-chunked `Transfer-Encoding` for request, see `src/native/http.c`
+ 5: p.error(ERROR.INVALID_TRANSFER_ENCODING,
+ 'Request has invalid `Transfer-Encoding`'),
+ });
+
+ n('headers_done')
+ .otherwise(afterHeadersComplete);
+
+ upgradePause
+ .otherwise(n('cleanup'));
+
+ afterHeadersComplete
+ .otherwise(this.invokePausable('on_message_complete',
+ ERROR.CB_MESSAGE_COMPLETE, 'cleanup'));
+
+ n('body_identity')
+ .otherwise(span.body.start()
+ .otherwise(p.consume('content_length').otherwise(
+ span.body.end(n('message_done')))));
+
+ n('body_identity_eof')
+ .otherwise(
+ this.update('finish', FINISH.SAFE_WITH_CB, span.body.start(n('eof'))));
+
+ // Just read everything until EOF
+ n('eof')
+ .skipTo(n('eof'));
+
+ n('chunk_size_start')
+ .otherwise(this.update('content_length', 0, 'chunk_size_digit'));
+
+ const addContentLength = this.mulAdd('content_length', {
+ overflow: p.error(ERROR.INVALID_CHUNK_SIZE, 'Chunk size overflow'),
+ success: 'chunk_size',
+ }, { signed: false, base: 0x10 });
+
+ n('chunk_size_digit')
+ .select(HEX_MAP, addContentLength)
+ .otherwise(p.error(ERROR.INVALID_CHUNK_SIZE,
+ 'Invalid character in chunk size'));
+
+ n('chunk_size')
+ .select(HEX_MAP, addContentLength)
+ .otherwise(n('chunk_size_otherwise'));
+
+ n('chunk_size_otherwise')
+ .match(
+ [ ' ', '\t' ],
+ this.testLenientFlags(
+ LENIENT_FLAGS.SPACES_AFTER_CHUNK_SIZE,
+ {
+ 1: n('chunk_size_otherwise'),
+ },
+ p.error(ERROR.INVALID_CHUNK_SIZE, 'Invalid character in chunk size'),
+ ),
+ )
+ .match('\r', n('chunk_size_almost_done'))
+ .match(
+ '\n',
+ checkIfAllowLFWithoutCR(
+ n('chunk_size_almost_done'),
+ p.error(ERROR.CR_EXPECTED, 'Missing expected CR after chunk size'),
+ ),
+ )
+ .match(';', n('chunk_extensions'))
+ .otherwise(p.error(ERROR.INVALID_CHUNK_SIZE,
+ 'Invalid character in chunk size'));
+
+ const onChunkExtensionNameCompleted = (destination: Node) => {
+ return this.invokePausable(
+ 'on_chunk_extension_name', ERROR.CB_CHUNK_EXTENSION_NAME_COMPLETE, destination);
+ };
+
+ const onChunkExtensionValueCompleted = (destination: Node) => {
+ return this.invokePausable(
+ 'on_chunk_extension_value', ERROR.CB_CHUNK_EXTENSION_VALUE_COMPLETE, destination);
+ };
+
+ n('chunk_extensions')
+ .match(' ', p.error(ERROR.STRICT, 'Invalid character in chunk extensions'))
+ .match('\r', p.error(ERROR.STRICT, 'Invalid character in chunk extensions'))
+ .otherwise(this.span.chunkExtensionName.start(n('chunk_extension_name')));
+
+ n('chunk_extension_name')
+ .match(TOKEN, n('chunk_extension_name'))
+ .peek('=', this.span.chunkExtensionName.end().skipTo(
+ this.span.chunkExtensionValue.start(
+ onChunkExtensionNameCompleted(n('chunk_extension_value')),
+ ),
+ ))
+ .peek(';', this.span.chunkExtensionName.end().skipTo(
+ onChunkExtensionNameCompleted(n('chunk_extensions')),
+ ))
+ .peek('\r', this.span.chunkExtensionName.end().skipTo(
+ onChunkExtensionNameCompleted(n('chunk_size_almost_done')),
+ ))
+ .peek('\n', this.span.chunkExtensionName.end(
+ onChunkExtensionNameCompleted(
+ checkIfAllowLFWithoutCR(
+ n('chunk_size_almost_done'),
+ p.error(ERROR.CR_EXPECTED, 'Missing expected CR after chunk extension name'),
+ ),
+ ),
+ ))
+ .otherwise(this.span.chunkExtensionName.end().skipTo(
+ p.error(ERROR.STRICT, 'Invalid character in chunk extensions name'),
+ ));
+
+ n('chunk_extension_value')
+ .match('"', n('chunk_extension_quoted_value'))
+ .match(TOKEN, n('chunk_extension_value'))
+ .peek(';', this.span.chunkExtensionValue.end().skipTo(
+ onChunkExtensionValueCompleted(n('chunk_extensions')),
+ ))
+ .peek('\r', this.span.chunkExtensionValue.end().skipTo(
+ onChunkExtensionValueCompleted(n('chunk_size_almost_done')),
+ ))
+ .peek('\n', this.span.chunkExtensionValue.end(
+ onChunkExtensionValueCompleted(
+ checkIfAllowLFWithoutCR(
+ n('chunk_size_almost_done'),
+ p.error(ERROR.CR_EXPECTED, 'Missing expected CR after chunk extension value'),
+ ),
+ ),
+ ))
+ .otherwise(this.span.chunkExtensionValue.end().skipTo(
+ p.error(ERROR.STRICT, 'Invalid character in chunk extensions value'),
+ ));
+
+ n('chunk_extension_quoted_value')
+ .match(QUOTED_STRING, n('chunk_extension_quoted_value'))
+ .match('"', this.span.chunkExtensionValue.end(
+ onChunkExtensionValueCompleted(n('chunk_extension_quoted_value_done')),
+ ))
+ .match('\\', n('chunk_extension_quoted_value_quoted_pair'))
+ .otherwise(this.span.chunkExtensionValue.end().skipTo(
+ p.error(ERROR.STRICT, 'Invalid character in chunk extensions quoted value'),
+ ));
+
+ n('chunk_extension_quoted_value_quoted_pair')
+ .match(HTAB_SP_VCHAR_OBS_TEXT, n('chunk_extension_quoted_value'))
+ .otherwise(this.span.chunkExtensionValue.end().skipTo(
+ p.error(ERROR.STRICT, 'Invalid quoted-pair in chunk extensions quoted value'),
+ ));
+
+ n('chunk_extension_quoted_value_done')
+ .match(';', n('chunk_extensions'))
+ .match('\r', n('chunk_size_almost_done'))
+ .peek(
+ '\n',
+ checkIfAllowLFWithoutCR(
+ n('chunk_size_almost_done'),
+ p.error(ERROR.CR_EXPECTED, 'Missing expected CR after chunk extension value'),
+ ),
+ )
+ .otherwise(p.error(ERROR.STRICT,
+ 'Invalid character in chunk extensions quote value'));
+
+ n('chunk_size_almost_done')
+ .match('\n', n('chunk_size_almost_done_lf'))
+ .otherwise(
+ this.testLenientFlags(LENIENT_FLAGS.OPTIONAL_LF_AFTER_CR, {
+ 1: n('chunk_size_almost_done_lf'),
+ }).otherwise(p.error(ERROR.STRICT, 'Expected LF after chunk size')),
+ );
+
+ const toChunk = this.isEqual('content_length', 0, {
+ equal: this.setFlag(FLAGS.TRAILING, 'header_field_start'),
+ notEqual: 'chunk_data',
+ });
+
+ n('chunk_size_almost_done_lf')
+ .otherwise(this.invokePausable('on_chunk_header',
+ ERROR.CB_CHUNK_HEADER, toChunk));
+
+ n('chunk_data')
+ .otherwise(span.body.start()
+ .otherwise(p.consume('content_length').otherwise(
+ span.body.end(n('chunk_data_almost_done')))));
+
+ n('chunk_data_almost_done')
+ .match('\r\n', n('chunk_complete'))
+ .match(
+ '\n',
+ checkIfAllowLFWithoutCR(
+ n('chunk_complete'),
+ p.error(ERROR.CR_EXPECTED, 'Missing expected CR after chunk data'),
+ ),
+ )
+ .otherwise(
+ this.testLenientFlags(LENIENT_FLAGS.OPTIONAL_CRLF_AFTER_CHUNK, {
+ 1: n('chunk_complete'),
+ }).otherwise(p.error(ERROR.STRICT, 'Expected LF after chunk data')),
+ );
+
+ n('chunk_complete')
+ .otherwise(this.invokePausable('on_chunk_complete',
+ ERROR.CB_CHUNK_COMPLETE, 'chunk_size_start'));
+
+ const upgradeAfterDone = this.isEqual('upgrade', 1, {
+ // Exit, the rest of the message is in a different protocol.
+ equal: upgradePause,
+
+ // Restart
+ notEqual: 'cleanup',
+ });
+
+ n('message_done')
+ .otherwise(this.invokePausable('on_message_complete',
+ ERROR.CB_MESSAGE_COMPLETE, upgradeAfterDone));
+
+ const lenientClose = this.testLenientFlags(LENIENT_FLAGS.KEEP_ALIVE, {
+ 1: n('restart'),
+ }, n('closed'));
+
+ // Check if we'd like to keep-alive
+ n('cleanup')
+ .otherwise(p.invoke(callback.afterMessageComplete, {
+ 1: this.update('content_length', 0, n('restart')),
+ }, this.update('finish', FINISH.SAFE, lenientClose)));
+
+ const lenientDiscardAfterClose = this.testLenientFlags(LENIENT_FLAGS.DATA_AFTER_CLOSE, {
+ 1: n('closed'),
+ }, p.error(ERROR.CLOSED_CONNECTION, 'Data after `Connection: close`'));
+
+ n('closed')
+ .match([ '\r', '\n' ], n('closed'))
+ .skipTo(lenientDiscardAfterClose);
+
+ n('restart')
+ .otherwise(
+ this.update('initial_message_completed', 1, this.update('finish', FINISH.SAFE, n('start')),
+ ));
+ }
+
+ private headersCompleted(): Node {
+ const p = this.llparse;
+ const callback = this.callback;
+ const n = (name: string): Match => this.node<Match>(name);
+
+ // Set `upgrade` if needed
+ const beforeHeadersComplete = p.invoke(callback.beforeHeadersComplete);
+
+ /* Here we call the headers_complete callback. This is somewhat
+ * different than other callbacks because if the user returns 1, we
+ * will interpret that as saying that this message has no body. This
+ * is needed for the annoying case of receiving a response to a HEAD
+ * request.
+ *
+ * We'd like to use CALLBACK_NOTIFY_NOADVANCE() here but we cannot, so
+ * we have to simulate it by handling a change in errno below.
+ */
+ const onHeadersComplete = p.invoke(callback.onHeadersComplete, {
+ 0: n('headers_done'),
+ 1: this.setFlag(FLAGS.SKIPBODY, 'headers_done'),
+ 2: this.update('upgrade', 1,
+ this.setFlag(FLAGS.SKIPBODY, 'headers_done')),
+ [ERROR.PAUSED]: this.pause('Paused by on_headers_complete',
+ 'headers_done'),
+ }, p.error(ERROR.CB_HEADERS_COMPLETE, 'User callback error'));
+
+ beforeHeadersComplete.otherwise(onHeadersComplete);
+
+ return beforeHeadersComplete;
+ }
+
+ private node<T extends Node>(name: string | T): T {
+ if (name instanceof Node) {
+ return name;
+ }
+
+ assert(this.nodes.has(name), `Unknown node with name "${name}"`);
+ return this.nodes.get(name)! as any;
+ }
+
+ private load(field: string, map: { [key: number]: Node },
+ next?: string | Node): Node {
+ const p = this.llparse;
+
+ const res = p.invoke(p.code.load(field), map);
+ if (next !== undefined) {
+ res.otherwise(this.node(next));
+ }
+ return res;
+ }
+
+ private store(field: string, next?: string | Node): Node {
+ const p = this.llparse;
+
+ const res = p.invoke(p.code.store(field));
+ if (next !== undefined) {
+ res.otherwise(this.node(next));
+ }
+ return res;
+ }
+
+ private update(field: string, value: number, next?: string | Node): Node {
+ const p = this.llparse;
+
+ const res = p.invoke(p.code.update(field, value));
+ if (next !== undefined) {
+ res.otherwise(this.node(next));
+ }
+ return res;
+ }
+
+ private resetHeaderState(next: string | Node): Node {
+ return this.update('header_state', HEADER_STATE.GENERAL, next);
+ }
+
+ private emptySpan(span: source.Span, next: string | Node): Node {
+ return span.start(span.end(this.node(next)));
+ }
+
+ private unsetFlag(flag: FLAGS, next: string | Node): Node {
+ const p = this.llparse;
+ return p.invoke(p.code.and('flags', ~flag), this.node(next));
+ }
+
+ private setFlag(flag: FLAGS, next: string | Node): Node {
+ const p = this.llparse;
+ return p.invoke(p.code.or('flags', flag), this.node(next));
+ }
+
+ private testFlags(flag: FLAGS, map: { [key: number]: Node },
+ next?: string | Node): Node {
+ const p = this.llparse;
+ const res = p.invoke(p.code.test('flags', flag), map);
+ if (next !== undefined) {
+ res.otherwise(this.node(next));
+ }
+ return res;
+ }
+
+ private testLenientFlags(flag: LENIENT_FLAGS, map: { [key: number]: Node },
+ next?: string | Node): Node {
+ const p = this.llparse;
+ const res = p.invoke(p.code.test('lenient_flags', flag), map);
+ if (next !== undefined) {
+ res.otherwise(this.node(next));
+ }
+ return res;
+ }
+
+ private setHeaderFlags(next: string | Node): Node {
+ const HS = HEADER_STATE;
+ const F = FLAGS;
+
+ const toConnection =
+ this.update('header_state', HEADER_STATE.CONNECTION, next);
+
+ return this.load('header_state', {
+ [HS.CONNECTION_KEEP_ALIVE]:
+ this.setFlag(F.CONNECTION_KEEP_ALIVE, toConnection),
+ [HS.CONNECTION_CLOSE]: this.setFlag(F.CONNECTION_CLOSE, toConnection),
+ [HS.CONNECTION_UPGRADE]: this.setFlag(F.CONNECTION_UPGRADE, toConnection),
+ [HS.TRANSFER_ENCODING_CHUNKED]: this.setFlag(F.CHUNKED, next),
+ }, this.node(next));
+ }
+
+ private mulAdd(field: string, targets: IMulTargets,
+ options: IMulOptions = { base: 10, signed: false }): Node {
+ const p = this.llparse;
+
+ return p.invoke(p.code.mulAdd(field, options), {
+ 1: this.node(targets.overflow),
+ }, this.node(targets.success));
+ }
+
+ private isEqual(field: string, value: number, map: IIsEqualTargets) {
+ const p = this.llparse;
+ return p.invoke(p.code.isEqual(field, value), {
+ 0: this.node(map.notEqual),
+ }, this.node(map.equal));
+ }
+
+ private pause(msg: string, next?: string | Node) {
+ const p = this.llparse;
+ const res = p.pause(ERROR.PAUSED, msg);
+ if (next !== undefined) {
+ res.otherwise(this.node(next));
+ }
+ return res;
+ }
+
+ private invokePausable(name: string, errorCode: ERROR, next: string | Node)
+ : Node {
+ let cb;
+
+ switch (name) {
+ case 'on_message_begin':
+ cb = this.callback.onMessageBegin;
+ break;
+ case 'on_url_complete':
+ cb = this.callback.onUrlComplete;
+ break;
+ case 'on_status_complete':
+ cb = this.callback.onStatusComplete;
+ break;
+ case 'on_method_complete':
+ cb = this.callback.onMethodComplete;
+ break;
+ case 'on_version_complete':
+ cb = this.callback.onVersionComplete;
+ break;
+ case 'on_header_field_complete':
+ cb = this.callback.onHeaderFieldComplete;
+ break;
+ case 'on_header_value_complete':
+ cb = this.callback.onHeaderValueComplete;
+ break;
+ case 'on_message_complete':
+ cb = this.callback.onMessageComplete;
+ break;
+ case 'on_chunk_header':
+ cb = this.callback.onChunkHeader;
+ break;
+ case 'on_chunk_extension_name':
+ cb = this.callback.onChunkExtensionName;
+ break;
+ case 'on_chunk_extension_value':
+ cb = this.callback.onChunkExtensionValue;
+ break;
+ case 'on_chunk_complete':
+ cb = this.callback.onChunkComplete;
+ break;
+ case 'on_reset':
+ cb = this.callback.onReset;
+ break;
+ default:
+ throw new Error('Unknown callback: ' + name);
+ }
+
+ const p = this.llparse;
+ return p.invoke(cb, {
+ 0: this.node(next),
+ [ERROR.PAUSED]: this.pause(`${name} pause`, next),
+ }, p.error(errorCode, `\`${name}\` callback error`));
+ }
+}
diff --git a/llhttp/src/llhttp/url.ts b/llhttp/src/llhttp/url.ts
new file mode 100644
index 0000000..c5fced9
--- /dev/null
+++ b/llhttp/src/llhttp/url.ts
@@ -0,0 +1,220 @@
+import { LLParse, source } from 'llparse';
+
+import Match = source.node.Match;
+import Node = source.node.Node;
+
+import {
+ ALPHA,
+ CharList,
+ ERROR,
+ URL_CHAR,
+ USERINFO_CHARS,
+} from './constants';
+
+type SpanName = 'schema' | 'host' | 'path' | 'query' | 'fragment' | 'url';
+
+export interface IURLResult {
+ readonly entry: {
+ readonly normal: Node;
+ readonly connect: Node;
+ };
+ readonly exit: {
+ readonly toHTTP: Node;
+ readonly toHTTP09: Node;
+ };
+}
+
+type SpanTable = Map<SpanName, source.Span>;
+
+export class URL {
+ private readonly spanTable: SpanTable = new Map();
+ private readonly errorInvalid: Node;
+ private readonly URL_CHAR: CharList;
+
+ constructor(private readonly llparse: LLParse, separateSpans: boolean = false) {
+ const p = this.llparse;
+
+ this.errorInvalid = p.error(ERROR.INVALID_URL, 'Invalid characters in url');
+
+ this.URL_CHAR = URL_CHAR;
+
+ const table = this.spanTable;
+ if (separateSpans) {
+ table.set('schema', p.span(p.code.span('llhttp__on_url_schema')));
+ table.set('host', p.span(p.code.span('llhttp__on_url_host')));
+ table.set('path', p.span(p.code.span('llhttp__on_url_path')));
+ table.set('query', p.span(p.code.span('llhttp__on_url_query')));
+ table.set('fragment',
+ p.span(p.code.span('llhttp__on_url_fragment')));
+ } else {
+ table.set('url', p.span(p.code.span('llhttp__on_url')));
+ }
+ }
+
+ public build(): IURLResult {
+ const p = this.llparse;
+
+ const entry = {
+ connect: this.node('entry_connect'),
+ normal: this.node('entry_normal'),
+ };
+
+ const start = this.node('start');
+ const path = this.node('path');
+ const queryOrFragment = this.node('query_or_fragment');
+ const schema = this.node('schema');
+ const schemaDelim = this.node('schema_delim');
+ const server = this.node('server');
+ const queryStart = this.node('query_start');
+ const query = this.node('query');
+ const fragment = this.node('fragment');
+ const serverWithAt = this.node('server_with_at');
+
+ entry.normal
+ .otherwise(this.spanStart('url', start));
+
+ entry.connect
+ .otherwise(this.spanStart('url', this.spanStart('host', server)));
+
+ start
+ .peek([ '/', '*' ], this.spanStart('path').skipTo(path))
+ .peek(ALPHA, this.spanStart('schema', schema))
+ .otherwise(p.error(ERROR.INVALID_URL, 'Unexpected start char in url'));
+
+ schema
+ .match(ALPHA, schema)
+ .peek(':', this.spanEnd('schema').skipTo(schemaDelim))
+ .otherwise(p.error(ERROR.INVALID_URL, 'Unexpected char in url schema'));
+
+ schemaDelim
+ .match('//', this.spanStart('host', server))
+ .otherwise(p.error(ERROR.INVALID_URL, 'Unexpected char in url schema'));
+
+ for (const node of [server, serverWithAt]) {
+ node
+ .peek('/', this.spanEnd('host', this.spanStart('path').skipTo(path)))
+ .match('?', this.spanEnd('host', this.spanStart('query', query)))
+ .match(USERINFO_CHARS, server)
+ .match([ '[', ']' ], server)
+ .otherwise(p.error(ERROR.INVALID_URL, 'Unexpected char in url server'));
+
+ if (node !== serverWithAt) {
+ node.match('@', serverWithAt);
+ }
+ }
+
+ serverWithAt
+ .match('@', p.error(ERROR.INVALID_URL, 'Double @ in url'));
+
+ path
+ .match(this.URL_CHAR, path)
+ .otherwise(this.spanEnd('path', queryOrFragment));
+
+ // Performance optimization, split `path` so that the fast case remains
+ // there
+ queryOrFragment
+ .match('?', this.spanStart('query', query))
+ .match('#', this.spanStart('fragment', fragment))
+ .otherwise(p.error(ERROR.INVALID_URL, 'Invalid char in url path'));
+
+ query
+ .match(this.URL_CHAR, query)
+ // Allow extra '?' in query string
+ .match('?', query)
+ .peek('#', this.spanEnd('query')
+ .skipTo(this.spanStart('fragment', fragment)))
+ .otherwise(p.error(ERROR.INVALID_URL, 'Invalid char in url query'));
+
+ fragment
+ .match(this.URL_CHAR, fragment)
+ .match([ '?', '#' ], fragment)
+ .otherwise(
+ p.error(ERROR.INVALID_URL, 'Invalid char in url fragment start'));
+
+ for (const node of [ start, schema, schemaDelim ]) {
+ /* No whitespace allowed here */
+ node.match([ ' ', '\r', '\n' ], this.errorInvalid);
+ }
+
+ // Adaptors
+ const toHTTP = this.node('to_http');
+ const toHTTP09 = this.node('to_http_09');
+
+ const skipToHTTP = this.node('skip_to_http')
+ .skipTo(toHTTP);
+
+ const skipToHTTP09 = this.node('skip_to_http09')
+ .skipTo(toHTTP09);
+
+ const skipCRLF = this.node('skip_lf_to_http09')
+ .match('\r\n', toHTTP09)
+ .otherwise(p.error(ERROR.INVALID_URL, 'Expected CRLF'));
+
+ for (const node of [server, serverWithAt, queryOrFragment, queryStart, query, fragment]) {
+ let spanName: SpanName | undefined;
+
+ if (node === server || node === serverWithAt) {
+ spanName = 'host';
+ } else if (node === queryStart || node === query) {
+ spanName = 'query';
+ } else if (node === fragment) {
+ spanName = 'fragment';
+ }
+
+ const endTo = (target: Node): Node => {
+ let res: Node = this.spanEnd('url', target);
+ if (spanName !== undefined) {
+ res = this.spanEnd(spanName, res);
+ }
+ return res;
+ };
+
+ node.peek(' ', endTo(skipToHTTP));
+
+ node.peek('\r', endTo(skipCRLF));
+ node.peek('\n', endTo(skipToHTTP09));
+ }
+
+ return {
+ entry,
+ exit: {
+ toHTTP,
+ toHTTP09,
+ },
+ };
+ }
+
+ private spanStart(name: SpanName, otherwise?: Node): Node {
+ let res: Node;
+ if (this.spanTable.has(name)) {
+ res = this.spanTable.get(name)!.start();
+ } else {
+ res = this.llparse.node('span_start_stub_' + name);
+ }
+ if (otherwise !== undefined) {
+ res.otherwise(otherwise);
+ }
+ return res;
+ }
+
+ private spanEnd(name: SpanName, otherwise?: Node): Node {
+ let res: Node;
+ if (this.spanTable.has(name)) {
+ res = this.spanTable.get(name)!.end();
+ } else {
+ res = this.llparse.node('span_end_stub_' + name);
+ }
+ if (otherwise !== undefined) {
+ res.otherwise(otherwise);
+ }
+ return res;
+ }
+
+ private node(name: string): Match {
+ const res = this.llparse.node('url_' + name);
+
+ res.match([ '\t', '\f' ], this.errorInvalid);
+
+ return res;
+ }
+}
diff --git a/llhttp/src/llhttp/utils.ts b/llhttp/src/llhttp/utils.ts
new file mode 100644
index 0000000..7c01d66
--- /dev/null
+++ b/llhttp/src/llhttp/utils.ts
@@ -0,0 +1,27 @@
+export interface IEnumMap {
+ [key: string]: number;
+}
+
+export function enumToMap(
+ obj: any,
+ filter?: ReadonlyArray<number>,
+ exceptions?: ReadonlyArray<number>,
+): IEnumMap {
+ const res: IEnumMap = {};
+
+ for (const key of Object.keys(obj)) {
+ const value = obj[key];
+ if (typeof value !== 'number') {
+ continue;
+ }
+ if (filter && !filter.includes(value)) {
+ continue;
+ }
+ if (exceptions && exceptions.includes(value)) {
+ continue;
+ }
+ res[key] = value;
+ }
+
+ return res;
+}
diff --git a/llhttp/src/native/api.c b/llhttp/src/native/api.c
new file mode 100644
index 0000000..8c2ce3d
--- /dev/null
+++ b/llhttp/src/native/api.c
@@ -0,0 +1,510 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "llhttp.h"
+
+#define CALLBACK_MAYBE(PARSER, NAME) \
+ do { \
+ const llhttp_settings_t* settings; \
+ settings = (const llhttp_settings_t*) (PARSER)->settings; \
+ if (settings == NULL || settings->NAME == NULL) { \
+ err = 0; \
+ break; \
+ } \
+ err = settings->NAME((PARSER)); \
+ } while (0)
+
+#define SPAN_CALLBACK_MAYBE(PARSER, NAME, START, LEN) \
+ do { \
+ const llhttp_settings_t* settings; \
+ settings = (const llhttp_settings_t*) (PARSER)->settings; \
+ if (settings == NULL || settings->NAME == NULL) { \
+ err = 0; \
+ break; \
+ } \
+ err = settings->NAME((PARSER), (START), (LEN)); \
+ if (err == -1) { \
+ err = HPE_USER; \
+ llhttp_set_error_reason((PARSER), "Span callback error in " #NAME); \
+ } \
+ } while (0)
+
+void llhttp_init(llhttp_t* parser, llhttp_type_t type,
+ const llhttp_settings_t* settings) {
+ llhttp__internal_init(parser);
+
+ parser->type = type;
+ parser->settings = (void*) settings;
+}
+
+
+#if defined(__wasm__)
+
+extern int wasm_on_message_begin(llhttp_t * p);
+extern int wasm_on_url(llhttp_t* p, const char* at, size_t length);
+extern int wasm_on_status(llhttp_t* p, const char* at, size_t length);
+extern int wasm_on_header_field(llhttp_t* p, const char* at, size_t length);
+extern int wasm_on_header_value(llhttp_t* p, const char* at, size_t length);
+extern int wasm_on_headers_complete(llhttp_t * p, int status_code,
+ uint8_t upgrade, int should_keep_alive);
+extern int wasm_on_body(llhttp_t* p, const char* at, size_t length);
+extern int wasm_on_message_complete(llhttp_t * p);
+
+static int wasm_on_headers_complete_wrap(llhttp_t* p) {
+ return wasm_on_headers_complete(p, p->status_code, p->upgrade,
+ llhttp_should_keep_alive(p));
+}
+
+const llhttp_settings_t wasm_settings = {
+ wasm_on_message_begin,
+ wasm_on_url,
+ wasm_on_status,
+ NULL,
+ NULL,
+ wasm_on_header_field,
+ wasm_on_header_value,
+ NULL,
+ NULL,
+ wasm_on_headers_complete_wrap,
+ wasm_on_body,
+ wasm_on_message_complete,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+};
+
+
+llhttp_t* llhttp_alloc(llhttp_type_t type) {
+ llhttp_t* parser = malloc(sizeof(llhttp_t));
+ llhttp_init(parser, type, &wasm_settings);
+ return parser;
+}
+
+void llhttp_free(llhttp_t* parser) {
+ free(parser);
+}
+
+#endif // defined(__wasm__)
+
+/* Some getters required to get stuff from the parser */
+
+uint8_t llhttp_get_type(llhttp_t* parser) {
+ return parser->type;
+}
+
+uint8_t llhttp_get_http_major(llhttp_t* parser) {
+ return parser->http_major;
+}
+
+uint8_t llhttp_get_http_minor(llhttp_t* parser) {
+ return parser->http_minor;
+}
+
+uint8_t llhttp_get_method(llhttp_t* parser) {
+ return parser->method;
+}
+
+int llhttp_get_status_code(llhttp_t* parser) {
+ return parser->status_code;
+}
+
+uint8_t llhttp_get_upgrade(llhttp_t* parser) {
+ return parser->upgrade;
+}
+
+
+void llhttp_reset(llhttp_t* parser) {
+ llhttp_type_t type = parser->type;
+ const llhttp_settings_t* settings = parser->settings;
+ void* data = parser->data;
+ uint16_t lenient_flags = parser->lenient_flags;
+
+ llhttp__internal_init(parser);
+
+ parser->type = type;
+ parser->settings = (void*) settings;
+ parser->data = data;
+ parser->lenient_flags = lenient_flags;
+}
+
+
+llhttp_errno_t llhttp_execute(llhttp_t* parser, const char* data, size_t len) {
+ return llhttp__internal_execute(parser, data, data + len);
+}
+
+
+void llhttp_settings_init(llhttp_settings_t* settings) {
+ memset(settings, 0, sizeof(*settings));
+}
+
+
+llhttp_errno_t llhttp_finish(llhttp_t* parser) {
+ int err;
+
+ /* We're in an error state. Don't bother doing anything. */
+ if (parser->error != 0) {
+ return 0;
+ }
+
+ switch (parser->finish) {
+ case HTTP_FINISH_SAFE_WITH_CB:
+ CALLBACK_MAYBE(parser, on_message_complete);
+ if (err != HPE_OK) return err;
+
+ /* FALLTHROUGH */
+ case HTTP_FINISH_SAFE:
+ return HPE_OK;
+ case HTTP_FINISH_UNSAFE:
+ parser->reason = "Invalid EOF state";
+ return HPE_INVALID_EOF_STATE;
+ default:
+ abort();
+ }
+}
+
+
+void llhttp_pause(llhttp_t* parser) {
+ if (parser->error != HPE_OK) {
+ return;
+ }
+
+ parser->error = HPE_PAUSED;
+ parser->reason = "Paused";
+}
+
+
+void llhttp_resume(llhttp_t* parser) {
+ if (parser->error != HPE_PAUSED) {
+ return;
+ }
+
+ parser->error = 0;
+}
+
+
+void llhttp_resume_after_upgrade(llhttp_t* parser) {
+ if (parser->error != HPE_PAUSED_UPGRADE) {
+ return;
+ }
+
+ parser->error = 0;
+}
+
+
+llhttp_errno_t llhttp_get_errno(const llhttp_t* parser) {
+ return parser->error;
+}
+
+
+const char* llhttp_get_error_reason(const llhttp_t* parser) {
+ return parser->reason;
+}
+
+
+void llhttp_set_error_reason(llhttp_t* parser, const char* reason) {
+ parser->reason = reason;
+}
+
+
+const char* llhttp_get_error_pos(const llhttp_t* parser) {
+ return parser->error_pos;
+}
+
+
+const char* llhttp_errno_name(llhttp_errno_t err) {
+#define HTTP_ERRNO_GEN(CODE, NAME, _) case HPE_##NAME: return "HPE_" #NAME;
+ switch (err) {
+ HTTP_ERRNO_MAP(HTTP_ERRNO_GEN)
+ default: abort();
+ }
+#undef HTTP_ERRNO_GEN
+}
+
+
+const char* llhttp_method_name(llhttp_method_t method) {
+#define HTTP_METHOD_GEN(NUM, NAME, STRING) case HTTP_##NAME: return #STRING;
+ switch (method) {
+ HTTP_ALL_METHOD_MAP(HTTP_METHOD_GEN)
+ default: abort();
+ }
+#undef HTTP_METHOD_GEN
+}
+
+const char* llhttp_status_name(llhttp_status_t status) {
+#define HTTP_STATUS_GEN(NUM, NAME, STRING) case HTTP_STATUS_##NAME: return #STRING;
+ switch (status) {
+ HTTP_STATUS_MAP(HTTP_STATUS_GEN)
+ default: abort();
+ }
+#undef HTTP_STATUS_GEN
+}
+
+
+void llhttp_set_lenient_headers(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_HEADERS;
+ } else {
+ parser->lenient_flags &= ~LENIENT_HEADERS;
+ }
+}
+
+
+void llhttp_set_lenient_chunked_length(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_CHUNKED_LENGTH;
+ } else {
+ parser->lenient_flags &= ~LENIENT_CHUNKED_LENGTH;
+ }
+}
+
+
+void llhttp_set_lenient_keep_alive(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_KEEP_ALIVE;
+ } else {
+ parser->lenient_flags &= ~LENIENT_KEEP_ALIVE;
+ }
+}
+
+void llhttp_set_lenient_transfer_encoding(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_TRANSFER_ENCODING;
+ } else {
+ parser->lenient_flags &= ~LENIENT_TRANSFER_ENCODING;
+ }
+}
+
+void llhttp_set_lenient_version(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_VERSION;
+ } else {
+ parser->lenient_flags &= ~LENIENT_VERSION;
+ }
+}
+
+void llhttp_set_lenient_data_after_close(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_DATA_AFTER_CLOSE;
+ } else {
+ parser->lenient_flags &= ~LENIENT_DATA_AFTER_CLOSE;
+ }
+}
+
+void llhttp_set_lenient_optional_lf_after_cr(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_OPTIONAL_LF_AFTER_CR;
+ } else {
+ parser->lenient_flags &= ~LENIENT_OPTIONAL_LF_AFTER_CR;
+ }
+}
+
+void llhttp_set_lenient_optional_crlf_after_chunk(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_OPTIONAL_CRLF_AFTER_CHUNK;
+ } else {
+ parser->lenient_flags &= ~LENIENT_OPTIONAL_CRLF_AFTER_CHUNK;
+ }
+}
+
+void llhttp_set_lenient_optional_cr_before_lf(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_OPTIONAL_CR_BEFORE_LF;
+ } else {
+ parser->lenient_flags &= ~LENIENT_OPTIONAL_CR_BEFORE_LF;
+ }
+}
+
+void llhttp_set_lenient_spaces_after_chunk_size(llhttp_t* parser, int enabled) {
+ if (enabled) {
+ parser->lenient_flags |= LENIENT_SPACES_AFTER_CHUNK_SIZE;
+ } else {
+ parser->lenient_flags &= ~LENIENT_SPACES_AFTER_CHUNK_SIZE;
+ }
+}
+
+/* Callbacks */
+
+
+int llhttp__on_message_begin(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_message_begin);
+ return err;
+}
+
+
+int llhttp__on_url(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ SPAN_CALLBACK_MAYBE(s, on_url, p, endp - p);
+ return err;
+}
+
+
+int llhttp__on_url_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_url_complete);
+ return err;
+}
+
+
+int llhttp__on_status(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ SPAN_CALLBACK_MAYBE(s, on_status, p, endp - p);
+ return err;
+}
+
+
+int llhttp__on_status_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_status_complete);
+ return err;
+}
+
+
+int llhttp__on_method(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ SPAN_CALLBACK_MAYBE(s, on_method, p, endp - p);
+ return err;
+}
+
+
+int llhttp__on_method_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_method_complete);
+ return err;
+}
+
+
+int llhttp__on_version(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ SPAN_CALLBACK_MAYBE(s, on_version, p, endp - p);
+ return err;
+}
+
+
+int llhttp__on_version_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_version_complete);
+ return err;
+}
+
+
+int llhttp__on_header_field(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ SPAN_CALLBACK_MAYBE(s, on_header_field, p, endp - p);
+ return err;
+}
+
+
+int llhttp__on_header_field_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_header_field_complete);
+ return err;
+}
+
+
+int llhttp__on_header_value(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ SPAN_CALLBACK_MAYBE(s, on_header_value, p, endp - p);
+ return err;
+}
+
+
+int llhttp__on_header_value_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_header_value_complete);
+ return err;
+}
+
+
+int llhttp__on_headers_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_headers_complete);
+ return err;
+}
+
+
+int llhttp__on_message_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_message_complete);
+ return err;
+}
+
+
+int llhttp__on_body(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ SPAN_CALLBACK_MAYBE(s, on_body, p, endp - p);
+ return err;
+}
+
+
+int llhttp__on_chunk_header(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_chunk_header);
+ return err;
+}
+
+
+int llhttp__on_chunk_extension_name(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ SPAN_CALLBACK_MAYBE(s, on_chunk_extension_name, p, endp - p);
+ return err;
+}
+
+
+int llhttp__on_chunk_extension_name_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_chunk_extension_name_complete);
+ return err;
+}
+
+
+int llhttp__on_chunk_extension_value(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ SPAN_CALLBACK_MAYBE(s, on_chunk_extension_value, p, endp - p);
+ return err;
+}
+
+
+int llhttp__on_chunk_extension_value_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_chunk_extension_value_complete);
+ return err;
+}
+
+
+int llhttp__on_chunk_complete(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_chunk_complete);
+ return err;
+}
+
+
+int llhttp__on_reset(llhttp_t* s, const char* p, const char* endp) {
+ int err;
+ CALLBACK_MAYBE(s, on_reset);
+ return err;
+}
+
+
+/* Private */
+
+
+void llhttp__debug(llhttp_t* s, const char* p, const char* endp,
+ const char* msg) {
+ if (p == endp) {
+ fprintf(stderr, "p=%p type=%d flags=%02x next=null debug=%s\n", s, s->type,
+ s->flags, msg);
+ } else {
+ fprintf(stderr, "p=%p type=%d flags=%02x next=%02x debug=%s\n", s,
+ s->type, s->flags, *p, msg);
+ }
+}
diff --git a/llhttp/src/native/api.h b/llhttp/src/native/api.h
new file mode 100644
index 0000000..321879c
--- /dev/null
+++ b/llhttp/src/native/api.h
@@ -0,0 +1,355 @@
+#ifndef INCLUDE_LLHTTP_API_H_
+#define INCLUDE_LLHTTP_API_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+#include <stddef.h>
+
+#if defined(__wasm__)
+#define LLHTTP_EXPORT __attribute__((visibility("default")))
+#else
+#define LLHTTP_EXPORT
+#endif
+
+typedef llhttp__internal_t llhttp_t;
+typedef struct llhttp_settings_s llhttp_settings_t;
+
+typedef int (*llhttp_data_cb)(llhttp_t*, const char *at, size_t length);
+typedef int (*llhttp_cb)(llhttp_t*);
+
+struct llhttp_settings_s {
+ /* Possible return values 0, -1, `HPE_PAUSED` */
+ llhttp_cb on_message_begin;
+
+ /* Possible return values 0, -1, HPE_USER */
+ llhttp_data_cb on_url;
+ llhttp_data_cb on_status;
+ llhttp_data_cb on_method;
+ llhttp_data_cb on_version;
+ llhttp_data_cb on_header_field;
+ llhttp_data_cb on_header_value;
+ llhttp_data_cb on_chunk_extension_name;
+ llhttp_data_cb on_chunk_extension_value;
+
+ /* Possible return values:
+ * 0 - Proceed normally
+ * 1 - Assume that request/response has no body, and proceed to parsing the
+ * next message
+ * 2 - Assume absence of body (as above) and make `llhttp_execute()` return
+ * `HPE_PAUSED_UPGRADE`
+ * -1 - Error
+ * `HPE_PAUSED`
+ */
+ llhttp_cb on_headers_complete;
+
+ /* Possible return values 0, -1, HPE_USER */
+ llhttp_data_cb on_body;
+
+ /* Possible return values 0, -1, `HPE_PAUSED` */
+ llhttp_cb on_message_complete;
+ llhttp_cb on_url_complete;
+ llhttp_cb on_status_complete;
+ llhttp_cb on_method_complete;
+ llhttp_cb on_version_complete;
+ llhttp_cb on_header_field_complete;
+ llhttp_cb on_header_value_complete;
+ llhttp_cb on_chunk_extension_name_complete;
+ llhttp_cb on_chunk_extension_value_complete;
+
+ /* When on_chunk_header is called, the current chunk length is stored
+ * in parser->content_length.
+ * Possible return values 0, -1, `HPE_PAUSED`
+ */
+ llhttp_cb on_chunk_header;
+ llhttp_cb on_chunk_complete;
+ llhttp_cb on_reset;
+};
+
+/* Initialize the parser with specific type and user settings.
+ *
+ * NOTE: lifetime of `settings` has to be at least the same as the lifetime of
+ * the `parser` here. In practice, `settings` has to be either a static
+ * variable or be allocated with `malloc`, `new`, etc.
+ */
+LLHTTP_EXPORT
+void llhttp_init(llhttp_t* parser, llhttp_type_t type,
+ const llhttp_settings_t* settings);
+
+LLHTTP_EXPORT
+llhttp_t* llhttp_alloc(llhttp_type_t type);
+
+LLHTTP_EXPORT
+void llhttp_free(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_type(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_http_major(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_http_minor(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_method(llhttp_t* parser);
+
+LLHTTP_EXPORT
+int llhttp_get_status_code(llhttp_t* parser);
+
+LLHTTP_EXPORT
+uint8_t llhttp_get_upgrade(llhttp_t* parser);
+
+/* Reset an already initialized parser back to the start state, preserving the
+ * existing parser type, callback settings, user data, and lenient flags.
+ */
+LLHTTP_EXPORT
+void llhttp_reset(llhttp_t* parser);
+
+/* Initialize the settings object */
+LLHTTP_EXPORT
+void llhttp_settings_init(llhttp_settings_t* settings);
+
+/* Parse full or partial request/response, invoking user callbacks along the
+ * way.
+ *
+ * If any of `llhttp_data_cb` returns errno not equal to `HPE_OK` - the parsing
+ * interrupts, and such errno is returned from `llhttp_execute()`. If
+ * `HPE_PAUSED` was used as a errno, the execution can be resumed with
+ * `llhttp_resume()` call.
+ *
+ * In a special case of CONNECT/Upgrade request/response `HPE_PAUSED_UPGRADE`
+ * is returned after fully parsing the request/response. If the user wishes to
+ * continue parsing, they need to invoke `llhttp_resume_after_upgrade()`.
+ *
+ * NOTE: if this function ever returns a non-pause type error, it will continue
+ * to return the same error upon each successive call up until `llhttp_init()`
+ * is called.
+ */
+LLHTTP_EXPORT
+llhttp_errno_t llhttp_execute(llhttp_t* parser, const char* data, size_t len);
+
+/* This method should be called when the other side has no further bytes to
+ * send (e.g. shutdown of readable side of the TCP connection.)
+ *
+ * Requests without `Content-Length` and other messages might require treating
+ * all incoming bytes as the part of the body, up to the last byte of the
+ * connection. This method will invoke `on_message_complete()` callback if the
+ * request was terminated safely. Otherwise a error code would be returned.
+ */
+LLHTTP_EXPORT
+llhttp_errno_t llhttp_finish(llhttp_t* parser);
+
+/* Returns `1` if the incoming message is parsed until the last byte, and has
+ * to be completed by calling `llhttp_finish()` on EOF
+ */
+LLHTTP_EXPORT
+int llhttp_message_needs_eof(const llhttp_t* parser);
+
+/* Returns `1` if there might be any other messages following the last that was
+ * successfully parsed.
+ */
+LLHTTP_EXPORT
+int llhttp_should_keep_alive(const llhttp_t* parser);
+
+/* Make further calls of `llhttp_execute()` return `HPE_PAUSED` and set
+ * appropriate error reason.
+ *
+ * Important: do not call this from user callbacks! User callbacks must return
+ * `HPE_PAUSED` if pausing is required.
+ */
+LLHTTP_EXPORT
+void llhttp_pause(llhttp_t* parser);
+
+/* Might be called to resume the execution after the pause in user's callback.
+ * See `llhttp_execute()` above for details.
+ *
+ * Call this only if `llhttp_execute()` returns `HPE_PAUSED`.
+ */
+LLHTTP_EXPORT
+void llhttp_resume(llhttp_t* parser);
+
+/* Might be called to resume the execution after the pause in user's callback.
+ * See `llhttp_execute()` above for details.
+ *
+ * Call this only if `llhttp_execute()` returns `HPE_PAUSED_UPGRADE`
+ */
+LLHTTP_EXPORT
+void llhttp_resume_after_upgrade(llhttp_t* parser);
+
+/* Returns the latest return error */
+LLHTTP_EXPORT
+llhttp_errno_t llhttp_get_errno(const llhttp_t* parser);
+
+/* Returns the verbal explanation of the latest returned error.
+ *
+ * Note: User callback should set error reason when returning the error. See
+ * `llhttp_set_error_reason()` for details.
+ */
+LLHTTP_EXPORT
+const char* llhttp_get_error_reason(const llhttp_t* parser);
+
+/* Assign verbal description to the returned error. Must be called in user
+ * callbacks right before returning the errno.
+ *
+ * Note: `HPE_USER` error code might be useful in user callbacks.
+ */
+LLHTTP_EXPORT
+void llhttp_set_error_reason(llhttp_t* parser, const char* reason);
+
+/* Returns the pointer to the last parsed byte before the returned error. The
+ * pointer is relative to the `data` argument of `llhttp_execute()`.
+ *
+ * Note: this method might be useful for counting the number of parsed bytes.
+ */
+LLHTTP_EXPORT
+const char* llhttp_get_error_pos(const llhttp_t* parser);
+
+/* Returns textual name of error code */
+LLHTTP_EXPORT
+const char* llhttp_errno_name(llhttp_errno_t err);
+
+/* Returns textual name of HTTP method */
+LLHTTP_EXPORT
+const char* llhttp_method_name(llhttp_method_t method);
+
+/* Returns textual name of HTTP status */
+LLHTTP_EXPORT
+const char* llhttp_status_name(llhttp_status_t status);
+
+/* Enables/disables lenient header value parsing (disabled by default).
+ *
+ * Lenient parsing disables header value token checks, extending llhttp's
+ * protocol support to highly non-compliant clients/server. No
+ * `HPE_INVALID_HEADER_TOKEN` will be raised for incorrect header values when
+ * lenient parsing is "on".
+ *
+ * **Enabling this flag can pose a security issue since you will be exposed to
+ * request smuggling attacks. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_headers(llhttp_t* parser, int enabled);
+
+
+/* Enables/disables lenient handling of conflicting `Transfer-Encoding` and
+ * `Content-Length` headers (disabled by default).
+ *
+ * Normally `llhttp` would error when `Transfer-Encoding` is present in
+ * conjunction with `Content-Length`. This error is important to prevent HTTP
+ * request smuggling, but may be less desirable for small number of cases
+ * involving legacy servers.
+ *
+ * **Enabling this flag can pose a security issue since you will be exposed to
+ * request smuggling attacks. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_chunked_length(llhttp_t* parser, int enabled);
+
+
+/* Enables/disables lenient handling of `Connection: close` and HTTP/1.0
+ * requests responses.
+ *
+ * Normally `llhttp` would error on (in strict mode) or discard (in loose mode)
+ * the HTTP request/response after the request/response with `Connection: close`
+ * and `Content-Length`. This is important to prevent cache poisoning attacks,
+ * but might interact badly with outdated and insecure clients. With this flag
+ * the extra request/response will be parsed normally.
+ *
+ * **Enabling this flag can pose a security issue since you will be exposed to
+ * poisoning attacks. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_keep_alive(llhttp_t* parser, int enabled);
+
+/* Enables/disables lenient handling of `Transfer-Encoding` header.
+ *
+ * Normally `llhttp` would error when a `Transfer-Encoding` has `chunked` value
+ * and another value after it (either in a single header or in multiple
+ * headers whose value are internally joined using `, `).
+ * This is mandated by the spec to reliably determine request body size and thus
+ * avoid request smuggling.
+ * With this flag the extra value will be parsed normally.
+ *
+ * **Enabling this flag can pose a security issue since you will be exposed to
+ * request smuggling attacks. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_transfer_encoding(llhttp_t* parser, int enabled);
+
+/* Enables/disables lenient handling of HTTP version.
+ *
+ * Normally `llhttp` would error when the HTTP version in the request or status line
+ * is not `0.9`, `1.0`, `1.1` or `2.0`.
+ * With this flag the invalid value will be parsed normally.
+ *
+ * **Enabling this flag can pose a security issue since you will allow unsupported
+ * HTTP versions. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_version(llhttp_t* parser, int enabled);
+
+/* Enables/disables lenient handling of additional data received after a message ends
+ * and keep-alive is disabled.
+ *
+ * Normally `llhttp` would error when additional unexpected data is received if the message
+ * contains the `Connection` header with `close` value.
+ * With this flag the extra data will discarded without throwing an error.
+ *
+ * **Enabling this flag can pose a security issue since you will be exposed to
+ * poisoning attacks. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_data_after_close(llhttp_t* parser, int enabled);
+
+/* Enables/disables lenient handling of incomplete CRLF sequences.
+ *
+ * Normally `llhttp` would error when a CR is not followed by LF when terminating the
+ * request line, the status line, the headers or a chunk header.
+ * With this flag only a CR is required to terminate such sections.
+ *
+ * **Enabling this flag can pose a security issue since you will be exposed to
+ * request smuggling attacks. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_optional_lf_after_cr(llhttp_t* parser, int enabled);
+
+/*
+ * Enables/disables lenient handling of line separators.
+ *
+ * Normally `llhttp` would error when a LF is not preceded by CR when terminating the
+ * request line, the status line, the headers, a chunk header or a chunk data.
+ * With this flag only a LF is required to terminate such sections.
+ *
+ * **Enabling this flag can pose a security issue since you will be exposed to
+ * request smuggling attacks. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_optional_cr_before_lf(llhttp_t* parser, int enabled);
+
+/* Enables/disables lenient handling of chunks not separated via CRLF.
+ *
+ * Normally `llhttp` would error when after a chunk data a CRLF is missing before
+ * starting a new chunk.
+ * With this flag the new chunk can start immediately after the previous one.
+ *
+ * **Enabling this flag can pose a security issue since you will be exposed to
+ * request smuggling attacks. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_optional_crlf_after_chunk(llhttp_t* parser, int enabled);
+
+/* Enables/disables lenient handling of spaces after chunk size.
+ *
+ * Normally `llhttp` would error when after a chunk size is followed by one or more
+ * spaces are present instead of a CRLF or `;`.
+ * With this flag this check is disabled.
+ *
+ * **Enabling this flag can pose a security issue since you will be exposed to
+ * request smuggling attacks. USE WITH CAUTION!**
+ */
+LLHTTP_EXPORT
+void llhttp_set_lenient_spaces_after_chunk_size(llhttp_t* parser, int enabled);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+#endif /* INCLUDE_LLHTTP_API_H_ */
diff --git a/llhttp/src/native/http.c b/llhttp/src/native/http.c
new file mode 100644
index 0000000..1ab91a5
--- /dev/null
+++ b/llhttp/src/native/http.c
@@ -0,0 +1,170 @@
+#include <stdio.h>
+#ifndef LLHTTP__TEST
+# include "llhttp.h"
+#else
+# define llhttp_t llparse_t
+#endif /* */
+
+int llhttp_message_needs_eof(const llhttp_t* parser);
+int llhttp_should_keep_alive(const llhttp_t* parser);
+
+int llhttp__before_headers_complete(llhttp_t* parser, const char* p,
+ const char* endp) {
+ /* Set this here so that on_headers_complete() callbacks can see it */
+ if ((parser->flags & F_UPGRADE) &&
+ (parser->flags & F_CONNECTION_UPGRADE)) {
+ /* For responses, "Upgrade: foo" and "Connection: upgrade" are
+ * mandatory only when it is a 101 Switching Protocols response,
+ * otherwise it is purely informational, to announce support.
+ */
+ parser->upgrade =
+ (parser->type == HTTP_REQUEST || parser->status_code == 101);
+ } else {
+ parser->upgrade = (parser->method == HTTP_CONNECT);
+ }
+ return 0;
+}
+
+
+/* Return values:
+ * 0 - No body, `restart`, message_complete
+ * 1 - CONNECT request, `restart`, message_complete, and pause
+ * 2 - chunk_size_start
+ * 3 - body_identity
+ * 4 - body_identity_eof
+ * 5 - invalid transfer-encoding for request
+ */
+int llhttp__after_headers_complete(llhttp_t* parser, const char* p,
+ const char* endp) {
+ int hasBody;
+
+ hasBody = parser->flags & F_CHUNKED || parser->content_length > 0;
+ if (
+ (parser->upgrade && (parser->method == HTTP_CONNECT ||
+ (parser->flags & F_SKIPBODY) || !hasBody)) ||
+ /* See RFC 2616 section 4.4 - 1xx e.g. Continue */
+ (parser->type == HTTP_RESPONSE && parser->status_code == 101)
+ ) {
+ /* Exit, the rest of the message is in a different protocol. */
+ return 1;
+ }
+
+ if (parser->type == HTTP_RESPONSE && parser->status_code == 100) {
+ /* No body, restart as the message is complete */
+ return 0;
+ }
+
+ /* See RFC 2616 section 4.4 */
+ if (
+ parser->flags & F_SKIPBODY || /* response to a HEAD request */
+ (
+ parser->type == HTTP_RESPONSE && (
+ parser->status_code == 102 || /* Processing */
+ parser->status_code == 103 || /* Early Hints */
+ parser->status_code == 204 || /* No Content */
+ parser->status_code == 304 /* Not Modified */
+ )
+ )
+ ) {
+ return 0;
+ } else if (parser->flags & F_CHUNKED) {
+ /* chunked encoding - ignore Content-Length header, prepare for a chunk */
+ return 2;
+ } else if (parser->flags & F_TRANSFER_ENCODING) {
+ if (parser->type == HTTP_REQUEST &&
+ (parser->lenient_flags & LENIENT_CHUNKED_LENGTH) == 0 &&
+ (parser->lenient_flags & LENIENT_TRANSFER_ENCODING) == 0) {
+ /* RFC 7230 3.3.3 */
+
+ /* If a Transfer-Encoding header field
+ * is present in a request and the chunked transfer coding is not
+ * the final encoding, the message body length cannot be determined
+ * reliably; the server MUST respond with the 400 (Bad Request)
+ * status code and then close the connection.
+ */
+ return 5;
+ } else {
+ /* RFC 7230 3.3.3 */
+
+ /* If a Transfer-Encoding header field is present in a response and
+ * the chunked transfer coding is not the final encoding, the
+ * message body length is determined by reading the connection until
+ * it is closed by the server.
+ */
+ return 4;
+ }
+ } else {
+ if (!(parser->flags & F_CONTENT_LENGTH)) {
+ if (!llhttp_message_needs_eof(parser)) {
+ /* Assume content-length 0 - read the next */
+ return 0;
+ } else {
+ /* Read body until EOF */
+ return 4;
+ }
+ } else if (parser->content_length == 0) {
+ /* Content-Length header given but zero: Content-Length: 0\r\n */
+ return 0;
+ } else {
+ /* Content-Length header given and non-zero */
+ return 3;
+ }
+ }
+}
+
+
+int llhttp__after_message_complete(llhttp_t* parser, const char* p,
+ const char* endp) {
+ int should_keep_alive;
+
+ should_keep_alive = llhttp_should_keep_alive(parser);
+ parser->finish = HTTP_FINISH_SAFE;
+ parser->flags = 0;
+
+ /* NOTE: this is ignored in loose parsing mode */
+ return should_keep_alive;
+}
+
+
+int llhttp_message_needs_eof(const llhttp_t* parser) {
+ if (parser->type == HTTP_REQUEST) {
+ return 0;
+ }
+
+ /* See RFC 2616 section 4.4 */
+ if (parser->status_code / 100 == 1 || /* 1xx e.g. Continue */
+ parser->status_code == 204 || /* No Content */
+ parser->status_code == 304 || /* Not Modified */
+ (parser->flags & F_SKIPBODY)) { /* response to a HEAD request */
+ return 0;
+ }
+
+ /* RFC 7230 3.3.3, see `llhttp__after_headers_complete` */
+ if ((parser->flags & F_TRANSFER_ENCODING) &&
+ (parser->flags & F_CHUNKED) == 0) {
+ return 1;
+ }
+
+ if (parser->flags & (F_CHUNKED | F_CONTENT_LENGTH)) {
+ return 0;
+ }
+
+ return 1;
+}
+
+
+int llhttp_should_keep_alive(const llhttp_t* parser) {
+ if (parser->http_major > 0 && parser->http_minor > 0) {
+ /* HTTP/1.1 */
+ if (parser->flags & F_CONNECTION_CLOSE) {
+ return 0;
+ }
+ } else {
+ /* HTTP/1.0 or earlier */
+ if (!(parser->flags & F_CONNECTION_KEEP_ALIVE)) {
+ return 0;
+ }
+ }
+
+ return !llhttp_message_needs_eof(parser);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 21:45:52 +0000