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llhttp
llhttp.h
#ifndef INCLUDE_LLHTTP_H_ #define INCLUDE_LLHTTP_H_ #define LLHTTP_VERSION_MAJOR 9 #define LLHTTP_VERSION_MINOR 3 #define LLHTTP_VERSION_PATCH 0 #ifndef INCLUDE_LLHTTP_ITSELF_H_ #define INCLUDE_LLHTTP_ITSELF_H_ #ifdef __cplusplus extern "C" { #endif #include <stdint.h> typedef struct llhttp__internal_s llhttp__internal_t; struct llhttp__internal_s { int32_t _index; void* _span_pos0; void* _span_cb0; int32_t error; const char* reason; const char* error_pos; void* data; void* _current; uint64_t content_length; uint8_t type; uint8_t method; uint8_t http_major; uint8_t http_minor; uint8_t header_state; uint16_t lenient_flags; uint8_t upgrade; uint8_t finish; uint16_t flags; uint16_t status_code; uint8_t initial_message_completed; void* settings; }; int llhttp__internal_init(llhttp__internal_t* s); int llhttp__internal_execute(llhttp__internal_t* s, const char* p, const char* endp); #ifdef __cplusplus } /* extern "C" */ #endif #endif /* INCLUDE_LLHTTP_ITSELF_H_ */ #ifndef LLLLHTTP_C_HEADERS_ #define LLLLHTTP_C_HEADERS_ #ifdef __cplusplus extern "C" { #endif enum llhttp_errno { HPE_OK = 0, HPE_INTERNAL = 1, HPE_STRICT = 2, HPE_CR_EXPECTED = 25, HPE_LF_EXPECTED = 3, HPE_UNEXPECTED_CONTENT_LENGTH = 4, HPE_UNEXPECTED_SPACE = 30, HPE_CLOSED_CONNECTION = 5, HPE_INVALID_METHOD = 6, HPE_INVALID_URL = 7, HPE_INVALID_CONSTANT = 8, HPE_INVALID_VERSION = 9, HPE_INVALID_HEADER_TOKEN = 10, HPE_INVALID_CONTENT_LENGTH = 11, HPE_INVALID_CHUNK_SIZE = 12, HPE_INVALID_STATUS = 13, HPE_INVALID_EOF_STATE = 14, HPE_INVALID_TRANSFER_ENCODING = 15, HPE_CB_MESSAGE_BEGIN = 16, HPE_CB_HEADERS_COMPLETE = 17, HPE_CB_MESSAGE_COMPLETE = 18, HPE_CB_CHUNK_HEADER = 19, HPE_CB_CHUNK_COMPLETE = 20, HPE_PAUSED = 21, HPE_PAUSED_UPGRADE = 22, HPE_PAUSED_H2_UPGRADE = 23, HPE_USER = 24, HPE_CB_URL_COMPLETE = 26, HPE_CB_STATUS_COMPLETE = 27, HPE_CB_METHOD_COMPLETE = 32, HPE_CB_VERSION_COMPLETE = 33, HPE_CB_HEADER_FIELD_COMPLETE = 28, HPE_CB_HEADER_VALUE_COMPLETE = 29, HPE_CB_CHUNK_EXTENSION_NAME_COMPLETE = 34, HPE_CB_CHUNK_EXTENSION_VALUE_COMPLETE = 35, HPE_CB_RESET = 31, HPE_CB_PROTOCOL_COMPLETE = 38 }; typedef enum llhttp_errno llhttp_errno_t; enum llhttp_flags { F_CONNECTION_KEEP_ALIVE = 0x1, F_CONNECTION_CLOSE = 0x2, F_CONNECTION_UPGRADE = 0x4, F_CHUNKED = 0x8, F_UPGRADE = 0x10, F_CONTENT_LENGTH = 0x20, F_SKIPBODY = 0x40, F_TRAILING = 0x80, F_TRANSFER_ENCODING = 0x200 }; typedef enum llhttp_flags llhttp_flags_t; enum llhttp_lenient_flags { LENIENT_HEADERS = 0x1, LENIENT_CHUNKED_LENGTH = 0x2, LENIENT_KEEP_ALIVE = 0x4, LENIENT_TRANSFER_ENCODING = 0x8, LENIENT_VERSION = 0x10, LENIENT_DATA_AFTER_CLOSE = 0x20, LENIENT_OPTIONAL_LF_AFTER_CR = 0x40, LENIENT_OPTIONAL_CRLF_AFTER_CHUNK = 0x80, LENIENT_OPTIONAL_CR_BEFORE_LF = 0x100, LENIENT_SPACES_AFTER_CHUNK_SIZE = 0x200 }; typedef enum llhttp_lenient_flags llhttp_lenient_flags_t; enum llhttp_type { HTTP_BOTH = 0, HTTP_REQUEST = 1, HTTP_RESPONSE = 2 }; typedef enum llhttp_type llhttp_type_t; enum llhttp_finish { HTTP_FINISH_SAFE = 0, HTTP_FINISH_SAFE_WITH_CB = 1, HTTP_FINISH_UNSAFE = 2 }; typedef enum llhttp_finish llhttp_finish_t; enum llhttp_method { HTTP_DELETE = 0, HTTP_GET = 1, HTTP_HEAD = 2, HTTP_POST = 3, HTTP_PUT = 4, HTTP_CONNECT = 5, HTTP_OPTIONS = 6, HTTP_TRACE = 7, HTTP_COPY = 8, HTTP_LOCK = 9, HTTP_MKCOL = 10, HTTP_MOVE = 11, HTTP_PROPFIND = 12, HTTP_PROPPATCH = 13, HTTP_SEARCH = 14, HTTP_UNLOCK = 15, HTTP_BIND = 16, HTTP_REBIND = 17, HTTP_UNBIND = 18, HTTP_ACL = 19, HTTP_REPORT = 20, HTTP_MKACTIVITY = 21, HTTP_CHECKOUT = 22, HTTP_MERGE = 23, HTTP_MSEARCH = 24, HTTP_NOTIFY = 25, HTTP_SUBSCRIBE = 26, HTTP_UNSUBSCRIBE = 27, HTTP_PATCH = 28, HTTP_PURGE = 29, HTTP_MKCALENDAR = 30, HTTP_LINK = 31, HTTP_UNLINK = 32, HTTP_SOURCE = 33, HTTP_PRI = 34, HTTP_DESCRIBE = 35, HTTP_ANNOUNCE = 36, HTTP_SETUP = 37, HTTP_PLAY = 38, HTTP_PAUSE = 39, HTTP_TEARDOWN = 40, HTTP_GET_PARAMETER = 41, HTTP_SET_PARAMETER = 42, HTTP_REDIRECT = 43, HTTP_RECORD = 44, HTTP_FLUSH = 45, HTTP_QUERY = 46 }; typedef enum llhttp_method llhttp_method_t; enum llhttp_status { HTTP_STATUS_CONTINUE = 100, HTTP_STATUS_SWITCHING_PROTOCOLS = 101, HTTP_STATUS_PROCESSING = 102, HTTP_STATUS_EARLY_HINTS = 103, HTTP_STATUS_RESPONSE_IS_STALE = 110, HTTP_STATUS_REVALIDATION_FAILED = 111, HTTP_STATUS_DISCONNECTED_OPERATION = 112, HTTP_STATUS_HEURISTIC_EXPIRATION = 113, HTTP_STATUS_MISCELLANEOUS_WARNING = 199, HTTP_STATUS_OK = 200, HTTP_STATUS_CREATED = 201, HTTP_STATUS_ACCEPTED = 202, HTTP_STATUS_NON_AUTHORITATIVE_INFORMATION = 203, HTTP_STATUS_NO_CONTENT = 204, HTTP_STATUS_RESET_CONTENT = 205, HTTP_STATUS_PARTIAL_CONTENT = 206, HTTP_STATUS_MULTI_STATUS = 207, HTTP_STATUS_ALREADY_REPORTED = 208, HTTP_STATUS_TRANSFORMATION_APPLIED = 214, HTTP_STATUS_IM_USED = 226, HTTP_STATUS_MISCELLANEOUS_PERSISTENT_WARNING = 299, HTTP_STATUS_MULTIPLE_CHOICES = 300, HTTP_STATUS_MOVED_PERMANENTLY = 301, HTTP_STATUS_FOUND = 302, HTTP_STATUS_SEE_OTHER = 303, HTTP_STATUS_NOT_MODIFIED = 304, HTTP_STATUS_USE_PROXY = 305, HTTP_STATUS_SWITCH_PROXY = 306, HTTP_STATUS_TEMPORARY_REDIRECT = 307, HTTP_STATUS_PERMANENT_REDIRECT = 308, HTTP_STATUS_BAD_REQUEST = 400, HTTP_STATUS_UNAUTHORIZED = 401, HTTP_STATUS_PAYMENT_REQUIRED = 402, HTTP_STATUS_FORBIDDEN = 403, HTTP_STATUS_NOT_FOUND = 404, HTTP_STATUS_METHOD_NOT_ALLOWED = 405, HTTP_STATUS_NOT_ACCEPTABLE = 406, HTTP_STATUS_PROXY_AUTHENTICATION_REQUIRED = 407, HTTP_STATUS_REQUEST_TIMEOUT = 408, HTTP_STATUS_CONFLICT = 409, HTTP_STATUS_GONE = 410, HTTP_STATUS_LENGTH_REQUIRED = 411, HTTP_STATUS_PRECONDITION_FAILED = 412, HTTP_STATUS_PAYLOAD_TOO_LARGE = 413, HTTP_STATUS_URI_TOO_LONG = 414, HTTP_STATUS_UNSUPPORTED_MEDIA_TYPE = 415, HTTP_STATUS_RANGE_NOT_SATISFIABLE = 416, HTTP_STATUS_EXPECTATION_FAILED = 417, HTTP_STATUS_IM_A_TEAPOT = 418, HTTP_STATUS_PAGE_EXPIRED = 419, HTTP_STATUS_ENHANCE_YOUR_CALM = 420, HTTP_STATUS_MISDIRECTED_REQUEST = 421, HTTP_STATUS_UNPROCESSABLE_ENTITY = 422, HTTP_STATUS_LOCKED = 423, HTTP_STATUS_FAILED_DEPENDENCY = 424, HTTP_STATUS_TOO_EARLY = 425, HTTP_STATUS_UPGRADE_REQUIRED = 426, HTTP_STATUS_PRECONDITION_REQUIRED = 428, HTTP_STATUS_TOO_MANY_REQUESTS = 429, HTTP_STATUS_REQUEST_HEADER_FIELDS_TOO_LARGE_UNOFFICIAL = 430, HTTP_STATUS_REQUEST_HEADER_FIELDS_TOO_LARGE = 431, HTTP_STATUS_LOGIN_TIMEOUT = 440, HTTP_STATUS_NO_RESPONSE = 444, HTTP_STATUS_RETRY_WITH = 449, HTTP_STATUS_BLOCKED_BY_PARENTAL_CONTROL = 450, HTTP_STATUS_UNAVAILABLE_FOR_LEGAL_REASONS = 451, HTTP_STATUS_CLIENT_CLOSED_LOAD_BALANCED_REQUEST = 460, HTTP_STATUS_INVALID_X_FORWARDED_FOR = 463, HTTP_STATUS_REQUEST_HEADER_TOO_LARGE = 494, HTTP_STATUS_SSL_CERTIFICATE_ERROR = 495, HTTP_STATUS_SSL_CERTIFICATE_REQUIRED = 496, HTTP_STATUS_HTTP_REQUEST_SENT_TO_HTTPS_PORT = 497, HTTP_STATUS_INVALID_TOKEN = 498, HTTP_STATUS_CLIENT_CLOSED_REQUEST = 499, HTTP_STATUS_INTERNAL_SERVER_ERROR = 500, HTTP_STATUS_NOT_IMPLEMENTED = 501, HTTP_STATUS_BAD_GATEWAY = 502, HTTP_STATUS_SERVICE_UNAVAILABLE = 503, HTTP_STATUS_GATEWAY_TIMEOUT = 504, HTTP_STATUS_HTTP_VERSION_NOT_SUPPORTED = 505, HTTP_STATUS_VARIANT_ALSO_NEGOTIATES = 506, HTTP_STATUS_INSUFFICIENT_STORAGE = 507, HTTP_STATUS_LOOP_DETECTED = 508, HTTP_STATUS_BANDWIDTH_LIMIT_EXCEEDED = 509, HTTP_STATUS_NOT_EXTENDED = 510, HTTP_STATUS_NETWORK_AUTHENTICATION_REQUIRED = 511, HTTP_STATUS_WEB_SERVER_UNKNOWN_ERROR = 520, HTTP_STATUS_WEB_SERVER_IS_DOWN = 521, HTTP_STATUS_CONNECTION_TIMEOUT = 522, HTTP_STATUS_ORIGIN_IS_UNREACHABLE = 523, HTTP_STATUS_TIMEOUT_OCCURED = 524, HTTP_STATUS_SSL_HANDSHAKE_FAILED = 525, HTTP_STATUS_INVALID_SSL_CERTIFICATE = 526, HTTP_STATUS_RAILGUN_ERROR = 527, HTTP_STATUS_SITE_IS_OVERLOADED = 529, HTTP_STATUS_SITE_IS_FROZEN = 530, HTTP_STATUS_IDENTITY_PROVIDER_AUTHENTICATION_ERROR = 561, HTTP_STATUS_NETWORK_READ_TIMEOUT = 598, HTTP_STATUS_NETWORK_CONNECT_TIMEOUT = 599 }; typedef enum llhttp_status llhttp_status_t; #define HTTP_ERRNO_MAP(XX) \ XX(0, OK, OK) \ XX(1, INTERNAL, INTERNAL) \ XX(2, STRICT, STRICT) \ XX(25, CR_EXPECTED, CR_EXPECTED) \ XX(3, LF_EXPECTED, LF_EXPECTED) \ XX(4, UNEXPECTED_CONTENT_LENGTH, UNEXPECTED_CONTENT_LENGTH) \ XX(30, UNEXPECTED_SPACE, UNEXPECTED_SPACE) \ XX(5, CLOSED_CONNECTION, CLOSED_CONNECTION) \ XX(6, INVALID_METHOD, INVALID_METHOD) \ XX(7, INVALID_URL, INVALID_URL) \ XX(8, INVALID_CONSTANT, INVALID_CONSTANT) \ XX(9, INVALID_VERSION, INVALID_VERSION) \ XX(10, INVALID_HEADER_TOKEN, INVALID_HEADER_TOKEN) \ XX(11, INVALID_CONTENT_LENGTH, INVALID_CONTENT_LENGTH) \ XX(12, INVALID_CHUNK_SIZE, INVALID_CHUNK_SIZE) \ XX(13, INVALID_STATUS, INVALID_STATUS) \ XX(14, INVALID_EOF_STATE, INVALID_EOF_STATE) \ XX(15, INVALID_TRANSFER_ENCODING, INVALID_TRANSFER_ENCODING) \ XX(16, CB_MESSAGE_BEGIN, CB_MESSAGE_BEGIN) \ XX(17, CB_HEADERS_COMPLETE, CB_HEADERS_COMPLETE) \ XX(18, CB_MESSAGE_COMPLETE, CB_MESSAGE_COMPLETE) \ XX(19, CB_CHUNK_HEADER, CB_CHUNK_HEADER) \ XX(20, CB_CHUNK_COMPLETE, CB_CHUNK_COMPLETE) \ XX(21, PAUSED, PAUSED) \ XX(22, PAUSED_UPGRADE, PAUSED_UPGRADE) \ XX(23, PAUSED_H2_UPGRADE, PAUSED_H2_UPGRADE) \ XX(24, USER, USER) \ XX(26, CB_URL_COMPLETE, CB_URL_COMPLETE) \ XX(27, CB_STATUS_COMPLETE, CB_STATUS_COMPLETE) \ XX(32, CB_METHOD_COMPLETE, CB_METHOD_COMPLETE) \ XX(33, CB_VERSION_COMPLETE, CB_VERSION_COMPLETE) \ XX(28, CB_HEADER_FIELD_COMPLETE, CB_HEADER_FIELD_COMPLETE) \ XX(29, CB_HEADER_VALUE_COMPLETE, CB_HEADER_VALUE_COMPLETE) \ XX(34, CB_CHUNK_EXTENSION_NAME_COMPLETE, CB_CHUNK_EXTENSION_NAME_COMPLETE) \ XX(35, CB_CHUNK_EXTENSION_VALUE_COMPLETE, CB_CHUNK_EXTENSION_VALUE_COMPLETE) \ XX(31, CB_RESET, CB_RESET) \ XX(38, CB_PROTOCOL_COMPLETE, CB_PROTOCOL_COMPLETE) \ #define HTTP_METHOD_MAP(XX) \ XX(0, DELETE, DELETE) \ XX(1, GET, GET) \ XX(2, HEAD, HEAD) \ XX(3, POST, POST) \ XX(4, PUT, PUT) \ XX(5, CONNECT, CONNECT) \ XX(6, OPTIONS, OPTIONS) \ XX(7, TRACE, TRACE) \ XX(8, COPY, COPY) \ XX(9, LOCK, LOCK) \ XX(10, MKCOL, MKCOL) \ XX(11, MOVE, MOVE) \ XX(12, PROPFIND, PROPFIND) \ XX(13, PROPPATCH, PROPPATCH) \ XX(14, SEARCH, SEARCH) \ XX(15, UNLOCK, UNLOCK) \ XX(16, BIND, BIND) \ XX(17, REBIND, REBIND) \ XX(18, UNBIND, UNBIND) \ XX(19, ACL, ACL) \ XX(20, REPORT, REPORT) \ XX(21, MKACTIVITY, MKACTIVITY) \ XX(22, CHECKOUT, CHECKOUT) \ XX(23, MERGE, MERGE) \ XX(24, MSEARCH, M-SEARCH) \ XX(25, NOTIFY, NOTIFY) \ XX(26, SUBSCRIBE, SUBSCRIBE) \ XX(27, UNSUBSCRIBE, UNSUBSCRIBE) \ XX(28, PATCH, PATCH) \ XX(29, PURGE, PURGE) \ XX(30, MKCALENDAR, MKCALENDAR) \ XX(31, LINK, LINK) \ XX(32, UNLINK, UNLINK) \ XX(33, SOURCE, SOURCE) \ XX(46, QUERY, QUERY) \ #define RTSP_METHOD_MAP(XX) \ XX(1, GET, GET) \ XX(3, POST, POST) \ XX(6, OPTIONS, OPTIONS) \ XX(35, DESCRIBE, DESCRIBE) \ XX(36, ANNOUNCE, ANNOUNCE) \ XX(37, SETUP, SETUP) \ XX(38, PLAY, PLAY) \ XX(39, PAUSE, PAUSE) \ XX(40, TEARDOWN, TEARDOWN) \ XX(41, GET_PARAMETER, GET_PARAMETER) \ XX(42, SET_PARAMETER, SET_PARAMETER) \ XX(43, REDIRECT, REDIRECT) \ XX(44, RECORD, RECORD) \ XX(45, FLUSH, FLUSH) \ #define HTTP_ALL_METHOD_MAP(XX) \ XX(0, DELETE, DELETE) \ XX(1, GET, GET) \ XX(2, HEAD, HEAD) \ XX(3, POST, POST) \ XX(4, PUT, PUT) \ XX(5, CONNECT, CONNECT) \ XX(6, OPTIONS, OPTIONS) \ XX(7, TRACE, TRACE) \ XX(8, COPY, COPY) \ XX(9, LOCK, LOCK) \ XX(10, MKCOL, MKCOL) \ XX(11, MOVE, MOVE) \ XX(12, PROPFIND, PROPFIND) \ XX(13, PROPPATCH, PROPPATCH) \ XX(14, SEARCH, SEARCH) \ XX(15, UNLOCK, UNLOCK) \ XX(16, BIND, BIND) \ XX(17, REBIND, REBIND) \ XX(18, UNBIND, UNBIND) \ XX(19, ACL, ACL) \ XX(20, REPORT, REPORT) \ XX(21, MKACTIVITY, MKACTIVITY) \ XX(22, CHECKOUT, CHECKOUT) \ XX(23, MERGE, MERGE) \ XX(24, MSEARCH, M-SEARCH) \ XX(25, NOTIFY, NOTIFY) \ XX(26, SUBSCRIBE, SUBSCRIBE) \ XX(27, UNSUBSCRIBE, UNSUBSCRIBE) \ XX(28, PATCH, PATCH) \ XX(29, PURGE, PURGE) \ XX(30, MKCALENDAR, MKCALENDAR) \ XX(31, LINK, LINK) \ XX(32, UNLINK, UNLINK) \ XX(33, SOURCE, SOURCE) \ XX(34, PRI, PRI) \ XX(35, DESCRIBE, DESCRIBE) \ XX(36, ANNOUNCE, ANNOUNCE) \ XX(37, SETUP, SETUP) \ XX(38, PLAY, PLAY) \ XX(39, PAUSE, PAUSE) \ XX(40, TEARDOWN, TEARDOWN) \ XX(41, GET_PARAMETER, GET_PARAMETER) \ XX(42, SET_PARAMETER, SET_PARAMETER) \ XX(43, REDIRECT, REDIRECT) \ XX(44, RECORD, RECORD) \ XX(45, FLUSH, FLUSH) \ XX(46, QUERY, QUERY) \ #define HTTP_STATUS_MAP(XX) \ XX(100, CONTINUE, CONTINUE) \ XX(101, SWITCHING_PROTOCOLS, SWITCHING_PROTOCOLS) \ XX(102, PROCESSING, PROCESSING) \ XX(103, EARLY_HINTS, EARLY_HINTS) \ XX(110, RESPONSE_IS_STALE, RESPONSE_IS_STALE) \ XX(111, REVALIDATION_FAILED, REVALIDATION_FAILED) \ XX(112, DISCONNECTED_OPERATION, DISCONNECTED_OPERATION) \ XX(113, HEURISTIC_EXPIRATION, HEURISTIC_EXPIRATION) \ XX(199, MISCELLANEOUS_WARNING, MISCELLANEOUS_WARNING) \ XX(200, OK, OK) \ XX(201, CREATED, CREATED) \ XX(202, ACCEPTED, ACCEPTED) \ XX(203, NON_AUTHORITATIVE_INFORMATION, NON_AUTHORITATIVE_INFORMATION) \ XX(204, NO_CONTENT, NO_CONTENT) \ XX(205, RESET_CONTENT, RESET_CONTENT) \ XX(206, PARTIAL_CONTENT, PARTIAL_CONTENT) \ XX(207, MULTI_STATUS, MULTI_STATUS) \ XX(208, ALREADY_REPORTED, ALREADY_REPORTED) \ XX(214, TRANSFORMATION_APPLIED, TRANSFORMATION_APPLIED) \ XX(226, IM_USED, IM_USED) \ XX(299, MISCELLANEOUS_PERSISTENT_WARNING, MISCELLANEOUS_PERSISTENT_WARNING) \ XX(300, MULTIPLE_CHOICES, MULTIPLE_CHOICES) \ XX(301, MOVED_PERMANENTLY, MOVED_PERMANENTLY) \ XX(302, FOUND, FOUND) \ XX(303, SEE_OTHER, SEE_OTHER) \ XX(304, NOT_MODIFIED, NOT_MODIFIED) \ XX(305, USE_PROXY, USE_PROXY) \ XX(306, SWITCH_PROXY, SWITCH_PROXY) \ XX(307, TEMPORARY_REDIRECT, TEMPORARY_REDIRECT) \ XX(308, PERMANENT_REDIRECT, PERMANENT_REDIRECT) \ XX(400, BAD_REQUEST, BAD_REQUEST) \ XX(401, UNAUTHORIZED, UNAUTHORIZED) \ XX(402, PAYMENT_REQUIRED, PAYMENT_REQUIRED) \ XX(403, FORBIDDEN, FORBIDDEN) \ XX(404, NOT_FOUND, NOT_FOUND) \ XX(405, METHOD_NOT_ALLOWED, METHOD_NOT_ALLOWED) \ XX(406, NOT_ACCEPTABLE, NOT_ACCEPTABLE) \ XX(407, PROXY_AUTHENTICATION_REQUIRED, PROXY_AUTHENTICATION_REQUIRED) \ XX(408, REQUEST_TIMEOUT, REQUEST_TIMEOUT) \ XX(409, CONFLICT, CONFLICT) \ XX(410, GONE, GONE) \ XX(411, LENGTH_REQUIRED, LENGTH_REQUIRED) \ XX(412, PRECONDITION_FAILED, PRECONDITION_FAILED) \ XX(413, PAYLOAD_TOO_LARGE, PAYLOAD_TOO_LARGE) \ XX(414, URI_TOO_LONG, URI_TOO_LONG) \ XX(415, UNSUPPORTED_MEDIA_TYPE, UNSUPPORTED_MEDIA_TYPE) \ XX(416, RANGE_NOT_SATISFIABLE, RANGE_NOT_SATISFIABLE) \ XX(417, EXPECTATION_FAILED, EXPECTATION_FAILED) \ XX(418, IM_A_TEAPOT, IM_A_TEAPOT) \ XX(419, PAGE_EXPIRED, PAGE_EXPIRED) \ XX(420, ENHANCE_YOUR_CALM, ENHANCE_YOUR_CALM) \ XX(421, MISDIRECTED_REQUEST, MISDIRECTED_REQUEST) \ XX(422, UNPROCESSABLE_ENTITY, UNPROCESSABLE_ENTITY) \ XX(423, LOCKED, LOCKED) \ XX(424, FAILED_DEPENDENCY, FAILED_DEPENDENCY) \ XX(425, TOO_EARLY, TOO_EARLY) \ XX(426, UPGRADE_REQUIRED, UPGRADE_REQUIRED) \ XX(428, PRECONDITION_REQUIRED, PRECONDITION_REQUIRED) \ XX(429, TOO_MANY_REQUESTS, TOO_MANY_REQUESTS) \ XX(430, REQUEST_HEADER_FIELDS_TOO_LARGE_UNOFFICIAL, REQUEST_HEADER_FIELDS_TOO_LARGE_UNOFFICIAL) \ XX(431, REQUEST_HEADER_FIELDS_TOO_LARGE, REQUEST_HEADER_FIELDS_TOO_LARGE) \ XX(440, LOGIN_TIMEOUT, LOGIN_TIMEOUT) \ XX(444, NO_RESPONSE, NO_RESPONSE) \ XX(449, RETRY_WITH, RETRY_WITH) \ XX(450, BLOCKED_BY_PARENTAL_CONTROL, BLOCKED_BY_PARENTAL_CONTROL) \ XX(451, UNAVAILABLE_FOR_LEGAL_REASONS, UNAVAILABLE_FOR_LEGAL_REASONS) \ XX(460, CLIENT_CLOSED_LOAD_BALANCED_REQUEST, CLIENT_CLOSED_LOAD_BALANCED_REQUEST) \ XX(463, INVALID_X_FORWARDED_FOR, INVALID_X_FORWARDED_FOR) \ XX(494, REQUEST_HEADER_TOO_LARGE, REQUEST_HEADER_TOO_LARGE) \ XX(495, SSL_CERTIFICATE_ERROR, SSL_CERTIFICATE_ERROR) \ XX(496, SSL_CERTIFICATE_REQUIRED, SSL_CERTIFICATE_REQUIRED) \ XX(497, HTTP_REQUEST_SENT_TO_HTTPS_PORT, HTTP_REQUEST_SENT_TO_HTTPS_PORT) \ XX(498, INVALID_TOKEN, INVALID_TOKEN) \ XX(499, CLIENT_CLOSED_REQUEST, CLIENT_CLOSED_REQUEST) \ XX(500, INTERNAL_SERVER_ERROR, INTERNAL_SERVER_ERROR) \ XX(501, NOT_IMPLEMENTED, NOT_IMPLEMENTED) \ XX(502, BAD_GATEWAY, BAD_GATEWAY) \ XX(503, SERVICE_UNAVAILABLE, SERVICE_UNAVAILABLE) \ XX(504, GATEWAY_TIMEOUT, GATEWAY_TIMEOUT) \ XX(505, HTTP_VERSION_NOT_SUPPORTED, HTTP_VERSION_NOT_SUPPORTED) \ XX(506, VARIANT_ALSO_NEGOTIATES, VARIANT_ALSO_NEGOTIATES) \ XX(507, INSUFFICIENT_STORAGE, INSUFFICIENT_STORAGE) \ XX(508, LOOP_DETECTED, LOOP_DETECTED) \ XX(509, BANDWIDTH_LIMIT_EXCEEDED, BANDWIDTH_LIMIT_EXCEEDED) \ XX(510, NOT_EXTENDED, NOT_EXTENDED) \ XX(511, NETWORK_AUTHENTICATION_REQUIRED, NETWORK_AUTHENTICATION_REQUIRED) \ XX(520, WEB_SERVER_UNKNOWN_ERROR, WEB_SERVER_UNKNOWN_ERROR) \ XX(521, WEB_SERVER_IS_DOWN, WEB_SERVER_IS_DOWN) \ XX(522, CONNECTION_TIMEOUT, CONNECTION_TIMEOUT) \ XX(523, ORIGIN_IS_UNREACHABLE, ORIGIN_IS_UNREACHABLE) \ XX(524, TIMEOUT_OCCURED, TIMEOUT_OCCURED) \ XX(525, SSL_HANDSHAKE_FAILED, SSL_HANDSHAKE_FAILED) \ XX(526, INVALID_SSL_CERTIFICATE, INVALID_SSL_CERTIFICATE) \ XX(527, RAILGUN_ERROR, RAILGUN_ERROR) \ XX(529, SITE_IS_OVERLOADED, SITE_IS_OVERLOADED) \ XX(530, SITE_IS_FROZEN, SITE_IS_FROZEN) \ XX(561, IDENTITY_PROVIDER_AUTHENTICATION_ERROR, IDENTITY_PROVIDER_AUTHENTICATION_ERROR) \ XX(598, NETWORK_READ_TIMEOUT, NETWORK_READ_TIMEOUT) \ XX(599, NETWORK_CONNECT_TIMEOUT, NETWORK_CONNECT_TIMEOUT) \ #ifdef __cplusplus } /* extern "C" */ #endif #endif /* LLLLHTTP_C_HEADERS_ */ #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"))) #elif defined(_WIN32) #define LLHTTP_EXPORT __declspec(dllexport) #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_protocol; 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_protocol_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_ */ #endif /* INCLUDE_LLHTTP_H_ */
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