/* * libwebsockets - small server side websockets and web server implementation * * Copyright (C) 2010 - 2016 Andy Green * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation: * version 2.1 of the License. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301 USA */ #include "lws_config.h" #include "lws_config_private.h" #if defined(LWS_WITH_CGI) && defined(LWS_HAVE_VFORK) #define _GNU_SOURCE #endif #if defined(__COVERITY__) typedef struct { long double x, y; } _Float128; #endif #ifdef LWS_HAVE_SYS_TYPES_H #include #endif #include #include #include #include #include #include #include #include #if defined(LWS_WITH_ESP32) #define MSG_NOSIGNAL 0 #define SOMAXCONN 3 #endif #if defined(LWS_WITH_ESP8266) #include #define assert(n) /* rom-provided stdc functions for free, ensure use these instead of libc ones */ int ets_vsprintf(char *str, const char *format, va_list argptr); int ets_vsnprintf(char *buffer, size_t sizeOfBuffer, const char *format, va_list argptr); int ets_snprintf(char *str, size_t size, const char *format, ...); int ets_sprintf(char *str, const char *format, ...); int os_printf_plus(const char *format, ...); #undef malloc #undef realloc #undef free void *pvPortMalloc(size_t s, const char *f, int line); #define malloc(s) pvPortMalloc(s, "", 0) void *pvPortRealloc(void *p, size_t s, const char *f, int line); #define realloc(p, s) pvPortRealloc(p, s, "", 0) void vPortFree(void *p, const char *f, int line); #define free(p) vPortFree(p, "", 0) #undef memcpy void *ets_memcpy(void *dest, const void *src, size_t n); #define memcpy ets_memcpy void *ets_memset(void *dest, int v, size_t n); #define memset ets_memset char *ets_strcpy(char *dest, const char *src); #define strcpy ets_strcpy char *ets_strncpy(char *dest, const char *src, size_t n); #define strncpy ets_strncpy char *ets_strstr(const char *haystack, const char *needle); #define strstr ets_strstr int ets_strcmp(const char *s1, const char *s2); int ets_strncmp(const char *s1, const char *s2, size_t n); #define strcmp ets_strcmp #define strncmp ets_strncmp size_t ets_strlen(const char *s); #define strlen ets_strlen void *ets_memmove(void *dest, const void *src, size_t n); #define memmove ets_memmove char *ets_strchr(const char *s, int c); #define strchr_ets_strchr #undef _DEBUG #include #else #define STORE_IN_ROM #include #endif #if LWS_MAX_SMP > 1 #include #endif #ifdef LWS_HAVE_SYS_STAT_H #include #endif #if defined(WIN32) || defined(_WIN32) #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #if (WINVER < 0x0501) #undef WINVER #undef _WIN32_WINNT #define WINVER 0x0501 #define _WIN32_WINNT WINVER #endif #define LWS_NO_DAEMONIZE #define LWS_ERRNO WSAGetLastError() #define LWS_EAGAIN WSAEWOULDBLOCK #define LWS_EALREADY WSAEALREADY #define LWS_EINPROGRESS WSAEINPROGRESS #define LWS_EINTR WSAEINTR #define LWS_EISCONN WSAEISCONN #define LWS_EWOULDBLOCK WSAEWOULDBLOCK #define MSG_NOSIGNAL 0 #define SHUT_RDWR SD_BOTH #define SOL_TCP IPPROTO_TCP #define SHUT_WR SD_SEND #define compatible_close(fd) closesocket(fd) #define lws_set_blocking_send(wsi) wsi->sock_send_blocking = 1 #define lws_socket_is_valid(x) (!!x) #define LWS_SOCK_INVALID 0 #include #include #include #include #ifdef LWS_HAVE_IN6ADDR_H #include #endif #include #include #if !defined(LWS_HAVE_ATOLL) #if defined(LWS_HAVE__ATOI64) #define atoll _atoi64 #else #warning No atoll or _atoi64 available, using atoi #define atoll atoi #endif #endif #ifndef __func__ #define __func__ __FUNCTION__ #endif #ifdef LWS_HAVE__VSNPRINTF #define vsnprintf _vsnprintf #endif /* we don't have an implementation for this on windows... */ int kill(int pid, int sig); int fork(void); #ifndef SIGINT #define SIGINT 2 #endif #else /* not windows --> */ #include #include #include #include #ifndef __cplusplus #include #endif #include #include #ifdef LWS_WITH_ESP8266 #include #define vsnprintf ets_vsnprintf #define snprintf ets_snprintf #define sprintf ets_sprintf int kill(int pid, int sig); #else #include #endif #ifdef LWS_WITH_HTTP_PROXY #include #include #endif #if defined(LWS_BUILTIN_GETIFADDRS) #include "./misc/getifaddrs.h" #else #if !defined(LWS_WITH_ESP8266) && !defined(LWS_WITH_ESP32) #if defined(__HAIKU__) #define _BSD_SOURCE #endif #include #endif #endif #if defined (__ANDROID__) #include #include #elif defined (__sun) || defined(__HAIKU__) #include #else #if !defined(LWS_WITH_ESP8266) && !defined(LWS_WITH_ESP32) #include #endif #endif #include #if !defined(LWS_WITH_ESP8266) && !defined(LWS_WITH_ESP32) #include #include #include #include #include #include #endif #ifdef LWS_WITH_LIBEV #include #endif #ifdef LWS_WITH_LIBUV #include #endif #ifdef LWS_WITH_LIBEVENT #include #endif #ifndef LWS_NO_FORK #ifdef LWS_HAVE_SYS_PRCTL_H #include #endif #endif #include #define LWS_ERRNO errno #define LWS_EAGAIN EAGAIN #define LWS_EALREADY EALREADY #define LWS_EINPROGRESS EINPROGRESS #define LWS_EINTR EINTR #define LWS_EISCONN EISCONN #define LWS_EWOULDBLOCK EWOULDBLOCK #define lws_set_blocking_send(wsi) #if defined(LWS_WITH_ESP8266) #define lws_socket_is_valid(x) ((x) != NULL) #define LWS_SOCK_INVALID (NULL) struct lws; const char * lws_plat_get_peer_simple(struct lws *wsi, char *name, int namelen); #else #define lws_socket_is_valid(x) (x >= 0) #define LWS_SOCK_INVALID (-1) #endif #endif #ifndef LWS_HAVE_BZERO #ifndef bzero #define bzero(b, len) (memset((b), '\0', (len)), (void) 0) #endif #endif #ifndef LWS_HAVE_STRERROR #define strerror(x) "" #endif #ifdef LWS_OPENSSL_SUPPORT #ifdef USE_WOLFSSL #ifdef USE_OLD_CYASSL #include #include #else #include #include #define OPENSSL_NO_TLSEXT #endif /* not USE_OLD_CYASSL */ #else #if defined(LWS_WITH_ESP32) #define OPENSSL_NO_TLSEXT #else #if defined(LWS_WITH_MBEDTLS) #include #include #else #include #include #include #include #include #ifdef LWS_HAVE_OPENSSL_ECDH_H #include #endif #include #endif #if defined(OPENSSL_VERSION_NUMBER) #if (OPENSSL_VERSION_NUMBER < 0x0009080afL) /* later openssl defines this to negate the presence of tlsext... but it was only * introduced at 0.9.8j. Earlier versions don't know it exists so don't * define it... making it look like the feature exists... */ #define OPENSSL_NO_TLSEXT #endif #endif #endif /* not ESP32 */ #endif /* not USE_WOLFSSL */ #endif #include "libwebsockets.h" #if defined(WIN32) || defined(_WIN32) #else static inline int compatible_close(int fd) { return close(fd); } #endif #if defined(WIN32) || defined(_WIN32) #include #endif #if defined(LWS_WITH_ESP8266) #undef compatible_close #define compatible_close(fd) { fd->state=ESPCONN_CLOSE; espconn_delete(fd); } lws_sockfd_type esp8266_create_tcp_stream_socket(void); void esp8266_tcp_stream_bind(lws_sockfd_type fd, int port, struct lws *wsi); #ifndef BIG_ENDIAN #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */ #endif #ifndef LITTLE_ENDIAN #define LITTLE_ENDIAN 1234 #endif #ifndef BYTE_ORDER #define BYTE_ORDER LITTLE_ENDIAN #endif #endif #if defined(WIN32) || defined(_WIN32) #ifndef BIG_ENDIAN #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */ #endif #ifndef LITTLE_ENDIAN #define LITTLE_ENDIAN 1234 #endif #ifndef BYTE_ORDER #define BYTE_ORDER LITTLE_ENDIAN #endif #undef __P #ifndef __P #if __STDC__ #define __P(protos) protos #else #define __P(protos) () #endif #endif #else #include #include #if defined(__APPLE__) #include #elif defined(__FreeBSD__) #include #elif defined(__linux__) #include #endif #ifdef __cplusplus extern "C" { #endif #if defined(__QNX__) #include #if defined(__LITTLEENDIAN__) #define BYTE_ORDER __LITTLEENDIAN__ #define LITTLE_ENDIAN __LITTLEENDIAN__ #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc); for suppres warning that BIG_ENDIAN is not defined. */ #endif #if defined(__BIGENDIAN__) #define BYTE_ORDER __BIGENDIAN__ #define LITTLE_ENDIAN 1234 /* to show byte order (taken from gcc); for suppres warning that LITTLE_ENDIAN is not defined. */ #define BIG_ENDIAN __BIGENDIAN__ #endif #endif #if defined(__sun) && defined(__GNUC__) #include #if !defined (BYTE_ORDER) # define BYTE_ORDER __BYTE_ORDER__ #endif #if !defined(LITTLE_ENDIAN) # define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__ #endif #if !defined(BIG_ENDIAN) # define BIG_ENDIAN __ORDER_BIG_ENDIAN__ #endif #endif /* sun + GNUC */ #if !defined(BYTE_ORDER) # define BYTE_ORDER __BYTE_ORDER #endif #if !defined(LITTLE_ENDIAN) # define LITTLE_ENDIAN __LITTLE_ENDIAN #endif #if !defined(BIG_ENDIAN) # define BIG_ENDIAN __BIG_ENDIAN #endif #endif /* * Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag, * but happily have something equivalent in the SO_NOSIGPIPE flag. */ #ifdef __APPLE__ #define MSG_NOSIGNAL SO_NOSIGPIPE #endif /* * Solaris 11.X only supports POSIX 2001, MSG_NOSIGNAL appears in * POSIX 2008. */ #ifdef __sun #define MSG_NOSIGNAL 0 #endif #ifdef _WIN32 #ifndef FD_HASHTABLE_MODULUS #define FD_HASHTABLE_MODULUS 32 #endif #endif #ifndef LWS_DEF_HEADER_LEN #define LWS_DEF_HEADER_LEN 4096 #endif #ifndef LWS_DEF_HEADER_POOL #define LWS_DEF_HEADER_POOL 4 #endif #ifndef LWS_MAX_PROTOCOLS #define LWS_MAX_PROTOCOLS 5 #endif #ifndef LWS_MAX_EXTENSIONS_ACTIVE #define LWS_MAX_EXTENSIONS_ACTIVE 2 #endif #ifndef LWS_MAX_EXT_OFFERS #define LWS_MAX_EXT_OFFERS 8 #endif #ifndef SPEC_LATEST_SUPPORTED #define SPEC_LATEST_SUPPORTED 13 #endif #ifndef AWAITING_TIMEOUT #define AWAITING_TIMEOUT 20 #endif #ifndef CIPHERS_LIST_STRING #define CIPHERS_LIST_STRING "DEFAULT" #endif #ifndef LWS_SOMAXCONN #define LWS_SOMAXCONN SOMAXCONN #endif #define MAX_WEBSOCKET_04_KEY_LEN 128 #ifndef SYSTEM_RANDOM_FILEPATH #define SYSTEM_RANDOM_FILEPATH "/dev/urandom" #endif enum lws_websocket_opcodes_07 { LWSWSOPC_CONTINUATION = 0, LWSWSOPC_TEXT_FRAME = 1, LWSWSOPC_BINARY_FRAME = 2, LWSWSOPC_NOSPEC__MUX = 7, /* control extensions 8+ */ LWSWSOPC_CLOSE = 8, LWSWSOPC_PING = 9, LWSWSOPC_PONG = 0xa, }; enum lws_connection_states { LWSS_HTTP, LWSS_HTTP_ISSUING_FILE, LWSS_HTTP_HEADERS, LWSS_HTTP_BODY, LWSS_DEAD_SOCKET, LWSS_ESTABLISHED, LWSS_CLIENT_HTTP_ESTABLISHED, LWSS_CLIENT_UNCONNECTED, LWSS_WAITING_TO_SEND_CLOSE_NOTIFICATION, LWSS_RETURNED_CLOSE_ALREADY, LWSS_AWAITING_CLOSE_ACK, LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE, LWSS_SHUTDOWN, LWSS_HTTP2_AWAIT_CLIENT_PREFACE, LWSS_HTTP2_ESTABLISHED_PRE_SETTINGS, LWSS_HTTP2_ESTABLISHED, LWSS_CGI, }; enum http_version { HTTP_VERSION_1_0, HTTP_VERSION_1_1, HTTP_VERSION_2 }; enum http_connection_type { HTTP_CONNECTION_CLOSE, HTTP_CONNECTION_KEEP_ALIVE }; enum lws_rx_parse_state { LWS_RXPS_NEW, LWS_RXPS_04_mask_1, LWS_RXPS_04_mask_2, LWS_RXPS_04_mask_3, LWS_RXPS_04_FRAME_HDR_1, LWS_RXPS_04_FRAME_HDR_LEN, LWS_RXPS_04_FRAME_HDR_LEN16_2, LWS_RXPS_04_FRAME_HDR_LEN16_1, LWS_RXPS_04_FRAME_HDR_LEN64_8, LWS_RXPS_04_FRAME_HDR_LEN64_7, LWS_RXPS_04_FRAME_HDR_LEN64_6, LWS_RXPS_04_FRAME_HDR_LEN64_5, LWS_RXPS_04_FRAME_HDR_LEN64_4, LWS_RXPS_04_FRAME_HDR_LEN64_3, LWS_RXPS_04_FRAME_HDR_LEN64_2, LWS_RXPS_04_FRAME_HDR_LEN64_1, LWS_RXPS_07_COLLECT_FRAME_KEY_1, LWS_RXPS_07_COLLECT_FRAME_KEY_2, LWS_RXPS_07_COLLECT_FRAME_KEY_3, LWS_RXPS_07_COLLECT_FRAME_KEY_4, LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED }; #define LWSCM_FLAG_IMPLIES_CALLBACK_CLOSED_CLIENT_HTTP 32 enum connection_mode { LWSCM_HTTP_SERVING, LWSCM_HTTP_SERVING_ACCEPTED, /* actual HTTP service going on */ LWSCM_PRE_WS_SERVING_ACCEPT, LWSCM_WS_SERVING, LWSCM_WS_CLIENT, LWSCM_HTTP2_SERVING, /* transient, ssl delay hiding */ LWSCM_SSL_ACK_PENDING, LWSCM_SSL_INIT, /* as above, but complete into LWSCM_RAW */ LWSCM_SSL_ACK_PENDING_RAW, LWSCM_SSL_INIT_RAW, /* special internal types */ LWSCM_SERVER_LISTENER, LWSCM_CGI, /* stdin, stdout, stderr for another cgi master wsi */ LWSCM_RAW, /* raw with bulk handling */ LWSCM_RAW_FILEDESC, /* raw without bulk handling */ /* HTTP Client related */ LWSCM_HTTP_CLIENT = LWSCM_FLAG_IMPLIES_CALLBACK_CLOSED_CLIENT_HTTP, LWSCM_HTTP_CLIENT_ACCEPTED, /* actual HTTP service going on */ LWSCM_WSCL_WAITING_CONNECT, LWSCM_WSCL_WAITING_PROXY_REPLY, LWSCM_WSCL_ISSUE_HANDSHAKE, LWSCM_WSCL_ISSUE_HANDSHAKE2, LWSCM_WSCL_ISSUE_HTTP_BODY, LWSCM_WSCL_WAITING_SSL, LWSCM_WSCL_WAITING_SERVER_REPLY, LWSCM_WSCL_WAITING_EXTENSION_CONNECT, LWSCM_WSCL_PENDING_CANDIDATE_CHILD, LWSCM_WSCL_WAITING_SOCKS_GREETING_REPLY, LWSCM_WSCL_WAITING_SOCKS_CONNECT_REPLY, LWSCM_WSCL_WAITING_SOCKS_AUTH_REPLY, /****** add new things just above ---^ ******/ }; /* enums of socks version */ enum socks_version { SOCKS_VERSION_4 = 4, SOCKS_VERSION_5 = 5 }; /* enums of subnegotiation version */ enum socks_subnegotiation_version { SOCKS_SUBNEGOTIATION_VERSION_1 = 1, }; /* enums of socks commands */ enum socks_command { SOCKS_COMMAND_CONNECT = 1, SOCKS_COMMAND_BIND = 2, SOCKS_COMMAND_UDP_ASSOCIATE = 3 }; /* enums of socks address type */ enum socks_atyp { SOCKS_ATYP_IPV4 = 1, SOCKS_ATYP_DOMAINNAME = 3, SOCKS_ATYP_IPV6 = 4 }; /* enums of socks authentication methods */ enum socks_auth_method { SOCKS_AUTH_NO_AUTH = 0, SOCKS_AUTH_GSSAPI = 1, SOCKS_AUTH_USERNAME_PASSWORD = 2 }; /* enums of subnegotiation status */ enum socks_subnegotiation_status { SOCKS_SUBNEGOTIATION_STATUS_SUCCESS = 0, }; /* enums of socks request reply */ enum socks_request_reply { SOCKS_REQUEST_REPLY_SUCCESS = 0, SOCKS_REQUEST_REPLY_FAILURE_GENERAL = 1, SOCKS_REQUEST_REPLY_CONNECTION_NOT_ALLOWED = 2, SOCKS_REQUEST_REPLY_NETWORK_UNREACHABLE = 3, SOCKS_REQUEST_REPLY_HOST_UNREACHABLE = 4, SOCKS_REQUEST_REPLY_CONNECTION_REFUSED = 5, SOCKS_REQUEST_REPLY_TTL_EXPIRED = 6, SOCKS_REQUEST_REPLY_COMMAND_NOT_SUPPORTED = 7, SOCKS_REQUEST_REPLY_ATYP_NOT_SUPPORTED = 8 }; /* enums used to generate socks messages */ enum socks_msg_type { /* greeting */ SOCKS_MSG_GREETING, /* credential, user name and password */ SOCKS_MSG_USERNAME_PASSWORD, /* connect command */ SOCKS_MSG_CONNECT }; enum { LWS_RXFLOW_ALLOW = (1 << 0), LWS_RXFLOW_PENDING_CHANGE = (1 << 1), }; struct lws_ring { void *buf; void (*destroy_element)(void *element); size_t buflen; size_t element_len; uint32_t head; uint32_t oldest_tail; }; /* this is not usable directly by user code any more, lws_close_reason() */ #define LWS_WRITE_CLOSE 4 struct lws_protocols; struct lws; #if defined(LWS_WITH_LIBEV) || defined(LWS_WITH_LIBUV) || defined(LWS_WITH_LIBEVENT) struct lws_io_watcher { #ifdef LWS_WITH_LIBEV ev_io ev_watcher; #endif #ifdef LWS_WITH_LIBUV uv_poll_t uv_watcher; #endif #ifdef LWS_WITH_LIBEVENT struct event *event_watcher; #endif struct lws_context *context; uint8_t actual_events; }; struct lws_signal_watcher { #ifdef LWS_WITH_LIBEV ev_signal ev_watcher; #endif #ifdef LWS_WITH_LIBUV uv_signal_t uv_watcher; #endif #ifdef LWS_WITH_LIBEVENT struct event *event_watcher; #endif struct lws_context *context; }; #endif #ifdef _WIN32 #define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS) struct lws_fd_hashtable { struct lws **wsi; int length; }; #endif /* * This is totally opaque to code using the library. It's exported as a * forward-reference pointer-only declaration; the user can use the pointer with * other APIs to get information out of it. */ #if defined(LWS_WITH_ESP32) typedef uint16_t ah_data_idx_t; #else typedef uint32_t ah_data_idx_t; #endif struct lws_fragments { ah_data_idx_t offset; uint16_t len; uint8_t nfrag; /* which ah->frag[] continues this content, or 0 */ uint8_t flags; /* only http2 cares */ }; /* * these are assigned from a pool held in the context. * Both client and server mode uses them for http header analysis */ struct allocated_headers { struct allocated_headers *next; /* linked list */ struct lws *wsi; /* owner */ char *data; /* prepared by context init to point to dedicated storage */ ah_data_idx_t data_length; /* * the randomly ordered fragments, indexed by frag_index and * lws_fragments->nfrag for continuation. */ struct lws_fragments frags[WSI_TOKEN_COUNT]; time_t assigned; /* * for each recognized token, frag_index says which frag[] his data * starts in (0 means the token did not appear) * the actual header data gets dumped as it comes in, into data[] */ uint8_t frag_index[WSI_TOKEN_COUNT]; #if defined(LWS_WITH_ESP32) uint8_t rx[256]; #else uint8_t rx[2048]; #endif int16_t rxpos; int16_t rxlen; uint32_t pos; uint32_t http_response; int hdr_token_idx; #ifndef LWS_NO_CLIENT char initial_handshake_hash_base64[30]; #endif uint8_t in_use; uint8_t nfrag; }; /* * so we can have n connections being serviced simultaneously, * these things need to be isolated per-thread. */ struct lws_context_per_thread { #if LWS_MAX_SMP > 1 pthread_mutex_t lock; #endif struct lws_pollfd *fds; #if defined(LWS_WITH_ESP8266) struct lws **lws_vs_fds_index; #endif struct lws *rx_draining_ext_list; struct lws *tx_draining_ext_list; struct lws *timeout_list; #if defined(LWS_WITH_LIBUV) || defined(LWS_WITH_LIBEVENT) struct lws_context *context; #endif #ifdef LWS_WITH_CGI struct lws_cgi *cgi_list; #endif void *http_header_data; struct allocated_headers *ah_list; struct lws *ah_wait_list; int ah_wait_list_length; #ifdef LWS_OPENSSL_SUPPORT struct lws *pending_read_list; /* linked list */ #endif #if defined(LWS_WITH_LIBEV) struct ev_loop *io_loop_ev; #endif #if defined(LWS_WITH_LIBUV) uv_loop_t *io_loop_uv; uv_signal_t signals[8]; uv_timer_t uv_timeout_watcher; uv_idle_t uv_idle; #endif #if defined(LWS_WITH_LIBEVENT) struct event_base *io_loop_event_base; #endif #if defined(LWS_WITH_LIBEV) struct lws_io_watcher w_accept; #endif #if defined(LWS_WITH_LIBEV) || defined(LWS_WITH_LIBUV) || defined(LWS_WITH_LIBEVENT) struct lws_signal_watcher w_sigint; unsigned char ev_loop_foreign:1; #endif unsigned long count_conns; /* * usable by anything in the service code, but only if the scope * does not last longer than the service action (since next service * of any socket can likewise use it and overwrite) */ unsigned char *serv_buf; #ifdef _WIN32 WSAEVENT *events; #else lws_sockfd_type dummy_pipe_fds[2]; #endif unsigned int fds_count; uint32_t ah_pool_length; short ah_count_in_use; unsigned char tid; unsigned char lock_depth; }; struct lws_conn_stats { unsigned long long rx, tx; unsigned long h1_conn, h1_trans, h2_trans, ws_upg, h2_alpn, h2_subs, h2_upg, rejected; }; void lws_sum_stats(const struct lws_context *ctx, struct lws_conn_stats *cs); enum lws_h2_settings { H2SET_HEADER_TABLE_SIZE = 1, H2SET_ENABLE_PUSH, H2SET_MAX_CONCURRENT_STREAMS, H2SET_INITIAL_WINDOW_SIZE, H2SET_MAX_FRAME_SIZE, H2SET_MAX_HEADER_LIST_SIZE, H2SET_COUNT /* always last */ }; struct http2_settings { uint32_t s[H2SET_COUNT]; }; /* * virtual host -related context information * vhostwide SSL context * vhostwide proxy * * hierarchy: * * context -> vhost -> wsi * * incoming connection non-SSL vhost binding: * * listen socket -> wsi -> select vhost after first headers * * incoming connection SSL vhost binding: * * SSL SNI -> wsi -> bind after SSL negotiation */ struct lws_vhost { #if !defined(LWS_WITH_ESP8266) char http_proxy_address[128]; char proxy_basic_auth_token[128]; #if defined(LWS_WITH_HTTP2) struct http2_settings set; #endif #if defined(LWS_WITH_SOCKS5) char socks_proxy_address[128]; char socks_user[96]; char socks_password[96]; #endif #endif #if defined(LWS_WITH_ESP8266) /* listen sockets need a place to hang their hat */ esp_tcp tcp; #endif struct lws_conn_stats conn_stats; struct lws_context *context; struct lws_vhost *vhost_next; const struct lws_http_mount *mount_list; struct lws *lserv_wsi; const char *name; const char *iface; #if !defined(LWS_WITH_ESP8266) && !defined(LWS_WITH_ESP32) && !defined(OPTEE_TA) && !defined(WIN32) int bind_iface; #endif const struct lws_protocols *protocols; void **protocol_vh_privs; const struct lws_protocol_vhost_options *pvo; const struct lws_protocol_vhost_options *headers; struct lws **same_vh_protocol_list; #ifdef LWS_OPENSSL_SUPPORT SSL_CTX *ssl_ctx; SSL_CTX *ssl_client_ctx; #endif #if defined(LWS_WITH_MBEDTLS) X509 *x509_client_CA; #endif #ifndef LWS_NO_EXTENSIONS const struct lws_extension *extensions; #endif void *user; int listen_port; unsigned int http_proxy_port; #if defined(LWS_WITH_SOCKS5) unsigned int socks_proxy_port; #endif unsigned int options; int count_protocols; int ka_time; int ka_probes; int ka_interval; int keepalive_timeout; int timeout_secs_ah_idle; int ssl_info_event_mask; #ifdef LWS_WITH_ACCESS_LOG int log_fd; #endif #ifdef LWS_OPENSSL_SUPPORT int use_ssl; int allow_non_ssl_on_ssl_port; unsigned int user_supplied_ssl_ctx:1; #endif unsigned int created_vhost_protocols:1; unsigned int being_destroyed:1; unsigned char default_protocol_index; unsigned char raw_protocol_index; }; struct lws_deferred_free { struct lws_deferred_free *next; time_t deadline; void *payload; }; typedef union { #ifdef LWS_WITH_IPV6 struct sockaddr_in6 sa6; #endif struct sockaddr_in sa4; } sockaddr46; #if defined(LWS_WITH_PEER_LIMITS) struct lws_peer { struct lws_peer *next; struct lws_peer *peer_wait_list; time_t time_created; time_t time_closed_all; uint8_t addr[32]; uint32_t hash; uint32_t count_wsi; uint32_t count_ah; uint32_t total_wsi; uint32_t total_ah; uint8_t af; }; #endif /* * the rest is managed per-context, that includes * * - processwide single fd -> wsi lookup * - contextwide headers pool */ struct lws_context { time_t last_timeout_check_s; time_t last_ws_ping_pong_check_s; time_t time_up; const struct lws_plat_file_ops *fops; struct lws_plat_file_ops fops_platform; #if defined(LWS_WITH_HTTP2) struct http2_settings set; #endif #if defined(LWS_WITH_ZIP_FOPS) struct lws_plat_file_ops fops_zip; #endif struct lws_context_per_thread pt[LWS_MAX_SMP]; struct lws_conn_stats conn_stats; #if LWS_MAX_SMP > 1 pthread_mutex_t lock; int lock_depth; #endif #ifdef _WIN32 /* different implementation between unix and windows */ struct lws_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS]; #else #if defined(LWS_WITH_ESP8266) struct espconn **connpool; /* .reverse points to the wsi */ void *rxd; int rxd_len; os_timer_t to_timer; #else struct lws **lws_lookup; /* fd to wsi */ #endif #endif struct lws_vhost *vhost_list; struct lws_vhost *vhost_pending_destruction_list; struct lws_plugin *plugin_list; struct lws_deferred_free *deferred_free_list; #if defined(LWS_WITH_PEER_LIMITS) struct lws_peer **pl_hash_table; struct lws_peer *peer_wait_list; time_t next_cull; #endif void *external_baggage_free_on_destroy; const struct lws_token_limits *token_limits; void *user_space; const char *server_string; const struct lws_protocol_vhost_options *reject_service_keywords; lws_reload_func deprecation_cb; #if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP) cap_value_t caps[4]; char count_caps; #endif #if defined(LWS_WITH_LIBEV) lws_ev_signal_cb_t * lws_ev_sigint_cb; #endif #if defined(LWS_WITH_LIBUV) uv_signal_cb lws_uv_sigint_cb; uv_loop_t pu_loop; #endif #if defined(LWS_WITH_LIBEVENT) lws_event_signal_cb_t * lws_event_sigint_cb; #endif char canonical_hostname[128]; #ifdef LWS_LATENCY unsigned long worst_latency; char worst_latency_info[256]; #endif #if defined(LWS_WITH_STATS) uint64_t lws_stats[LWSSTATS_SIZE]; uint64_t last_dump; int updated; #endif #if defined(LWS_WITH_ESP32) unsigned long time_last_state_dump; uint32_t last_free_heap; #endif int max_fds; #if defined(LWS_WITH_LIBEV) || defined(LWS_WITH_LIBUV) || defined(LWS_WITH_LIBEVENT) int use_ev_sigint; #endif int started_with_parent; int uid, gid; int fd_random; int count_wsi_allocated; int count_cgi_spawned; unsigned int options; unsigned int fd_limit_per_thread; unsigned int timeout_secs; unsigned int pt_serv_buf_size; int max_http_header_data; int simultaneous_ssl_restriction; int simultaneous_ssl; #if defined(LWS_WITH_PEER_LIMITS) uint32_t pl_hash_elements; /* protected by context->lock */ uint32_t count_peers; /* protected by context->lock */ unsigned short ip_limit_ah; unsigned short ip_limit_wsi; #endif unsigned int deprecated:1; unsigned int being_destroyed:1; unsigned int being_destroyed1:1; unsigned int requested_kill:1; unsigned int protocol_init_done:1; unsigned int ssl_gate_accepts:1; unsigned int doing_protocol_init; /* * set to the Thread ID that's doing the service loop just before entry * to poll indicates service thread likely idling in poll() * volatile because other threads may check it as part of processing * for pollfd event change. */ volatile int service_tid; int service_tid_detected; short max_http_header_pool; short count_threads; short plugin_protocol_count; short plugin_extension_count; short server_string_len; unsigned short ws_ping_pong_interval; unsigned short deprecation_pending_listen_close_count; uint8_t max_fi; }; int lws_check_deferred_free(struct lws_context *context, int force); #define lws_get_context_protocol(ctx, x) ctx->vhost_list->protocols[x] #define lws_get_vh_protocol(vh, x) vh->protocols[x] LWS_EXTERN void lws_close_free_wsi_final(struct lws *wsi); LWS_EXTERN void lws_libuv_closehandle(struct lws *wsi); LWS_EXTERN void lws_libuv_closehandle_manually(struct lws *wsi); LWS_EXTERN int lws_libuv_check_watcher_active(struct lws *wsi); LWS_VISIBLE LWS_EXTERN int lws_plat_plugins_init(struct lws_context * context, const char * const *d); LWS_VISIBLE LWS_EXTERN int lws_plat_plugins_destroy(struct lws_context * context); LWS_EXTERN void lws_restart_ws_ping_pong_timer(struct lws *wsi); struct lws * lws_adopt_socket_vhost(struct lws_vhost *vh, lws_sockfd_type accept_fd); enum { LWS_EV_READ = (1 << 0), LWS_EV_WRITE = (1 << 1), LWS_EV_START = (1 << 2), LWS_EV_STOP = (1 << 3), LWS_EV_PREPARE_DELETION = (1 << 31), }; #if defined(LWS_WITH_LIBEV) LWS_EXTERN void lws_libev_accept(struct lws *new_wsi, lws_sock_file_fd_type desc); LWS_EXTERN void lws_libev_io(struct lws *wsi, int flags); LWS_EXTERN int lws_libev_init_fd_table(struct lws_context *context); LWS_EXTERN void lws_libev_destroyloop(struct lws_context *context, int tsi); LWS_EXTERN void lws_libev_run(const struct lws_context *context, int tsi); #define LWS_LIBEV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBEV) LWS_EXTERN void lws_feature_status_libev(struct lws_context_creation_info *info); #else #define lws_libev_accept(_a, _b) ((void) 0) #define lws_libev_io(_a, _b) ((void) 0) #define lws_libev_init_fd_table(_a) (0) #define lws_libev_run(_a, _b) ((void) 0) #define lws_libev_destroyloop(_a, _b) ((void) 0) #define LWS_LIBEV_ENABLED(context) (0) #if LWS_POSIX && !defined(LWS_WITH_ESP32) #define lws_feature_status_libev(_a) \ lwsl_info("libev support not compiled in\n") #else #define lws_feature_status_libev(_a) #endif #endif #if defined(LWS_WITH_LIBUV) LWS_EXTERN void lws_libuv_accept(struct lws *new_wsi, lws_sock_file_fd_type desc); LWS_EXTERN void lws_libuv_io(struct lws *wsi, int flags); LWS_EXTERN int lws_libuv_init_fd_table(struct lws_context *context); LWS_EXTERN void lws_libuv_run(const struct lws_context *context, int tsi); LWS_EXTERN void lws_libuv_destroyloop(struct lws_context *context, int tsi); LWS_EXTERN int lws_uv_initvhost(struct lws_vhost* vh, struct lws*); #define LWS_LIBUV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV) LWS_EXTERN void lws_feature_status_libuv(struct lws_context_creation_info *info); #else #define lws_libuv_accept(_a, _b) ((void) 0) #define lws_libuv_io(_a, _b) ((void) 0) #define lws_libuv_init_fd_table(_a) (0) #define lws_libuv_run(_a, _b) ((void) 0) #define lws_libuv_destroyloop(_a, _b) ((void) 0) #define LWS_LIBUV_ENABLED(context) (0) #if LWS_POSIX && !defined(LWS_WITH_ESP32) #define lws_feature_status_libuv(_a) \ lwsl_notice("libuv support not compiled in\n") #else #define lws_feature_status_libuv(_a) #endif #endif #if defined(LWS_WITH_LIBEVENT) LWS_EXTERN void lws_libevent_accept(struct lws *new_wsi, lws_sock_file_fd_type desc); LWS_EXTERN void lws_libevent_io(struct lws *wsi, int flags); LWS_EXTERN int lws_libevent_init_fd_table(struct lws_context *context); LWS_EXTERN void lws_libevent_destroyloop(struct lws_context *context, int tsi); LWS_EXTERN void lws_libevent_run(const struct lws_context *context, int tsi); #define LWS_LIBEVENT_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBEVENT) LWS_EXTERN void lws_feature_status_libevent(struct lws_context_creation_info *info); #else #define lws_libevent_accept(_a, _b) ((void) 0) #define lws_libevent_io(_a, _b) ((void) 0) #define lws_libevent_init_fd_table(_a) (0) #define lws_libevent_run(_a, _b) ((void) 0) #define lws_libevent_destroyloop(_a, _b) ((void) 0) #define LWS_LIBEVENT_ENABLED(context) (0) #if LWS_POSIX && !defined(LWS_WITH_ESP32) #define lws_feature_status_libevent(_a) \ lwsl_notice("libevent support not compiled in\n") #else #define lws_feature_status_libevent(_a) #endif #endif #ifdef LWS_WITH_IPV6 #define LWS_IPV6_ENABLED(vh) \ (!lws_check_opt(vh->context->options, LWS_SERVER_OPTION_DISABLE_IPV6) && \ !lws_check_opt(vh->options, LWS_SERVER_OPTION_DISABLE_IPV6)) #else #define LWS_IPV6_ENABLED(context) (0) #endif #ifdef LWS_WITH_UNIX_SOCK #define LWS_UNIX_SOCK_ENABLED(vhost) \ (vhost->options & LWS_SERVER_OPTION_UNIX_SOCK) #else #define LWS_UNIX_SOCK_ENABLED(vhost) (0) #endif enum uri_path_states { URIPS_IDLE, URIPS_SEEN_SLASH, URIPS_SEEN_SLASH_DOT, URIPS_SEEN_SLASH_DOT_DOT, }; enum uri_esc_states { URIES_IDLE, URIES_SEEN_PERCENT, URIES_SEEN_PERCENT_H1, }; /* notice that these union members: * * hdr * http * http2 * * all have a pointer to allocated_headers struct as their first member. * * It means for allocated_headers access, the three union paths can all be * used interchangeably to access the same data */ #ifndef LWS_NO_CLIENT struct client_info_stash { char address[256]; char path[4096]; char host[256]; char origin[256]; char protocol[256]; char method[16]; char iface[16]; }; #endif struct _lws_header_related { /* MUST be first in struct */ struct allocated_headers *ah; struct lws *ah_wait_list; unsigned char *preamble_rx; #ifndef LWS_NO_CLIENT struct client_info_stash *stash; #endif unsigned int preamble_rx_len; enum uri_path_states ups; enum uri_esc_states ues; short lextable_pos; unsigned int current_token_limit; char esc_stash; char post_literal_equal; unsigned char parser_state; /* enum lws_token_indexes */ }; #if defined(LWS_WITH_RANGES) enum range_states { LWSRS_NO_ACTIVE_RANGE, LWSRS_BYTES_EQ, LWSRS_FIRST, LWSRS_STARTING, LWSRS_ENDING, LWSRS_COMPLETED, LWSRS_SYNTAX, }; struct lws_range_parsing { unsigned long long start, end, extent, agg, budget; const char buf[128]; int pos; enum range_states state; char start_valid, end_valid, ctr, count_ranges, did_try, inside, send_ctr; }; int lws_ranges_init(struct lws *wsi, struct lws_range_parsing *rp, unsigned long long extent); int lws_ranges_next(struct lws_range_parsing *rp); void lws_ranges_reset(struct lws_range_parsing *rp); #endif struct _lws_http_mode_related { /* MUST be first in struct */ struct allocated_headers *ah; /* mirroring _lws_header_related */ struct lws *ah_wait_list; unsigned char *preamble_rx; #ifndef LWS_NO_CLIENT struct client_info_stash *stash; #endif unsigned int preamble_rx_len; struct lws *new_wsi_list; lws_filepos_t filepos; lws_filepos_t filelen; lws_fop_fd_t fop_fd; #if defined(LWS_WITH_RANGES) struct lws_range_parsing range; char multipart_content_type[64]; #endif enum http_version request_version; enum http_connection_type connection_type; lws_filepos_t tx_content_length; lws_filepos_t tx_content_remain; lws_filepos_t rx_content_length; lws_filepos_t rx_content_remain; }; #define LWS_H2_FRAME_HEADER_LENGTH 9 #ifdef LWS_WITH_HTTP2 enum lws_h2_wellknown_frame_types { LWS_H2_FRAME_TYPE_DATA, LWS_H2_FRAME_TYPE_HEADERS, LWS_H2_FRAME_TYPE_PRIORITY, LWS_H2_FRAME_TYPE_RST_STREAM, LWS_H2_FRAME_TYPE_SETTINGS, LWS_H2_FRAME_TYPE_PUSH_PROMISE, LWS_H2_FRAME_TYPE_PING, LWS_H2_FRAME_TYPE_GOAWAY, LWS_H2_FRAME_TYPE_WINDOW_UPDATE, LWS_H2_FRAME_TYPE_CONTINUATION, LWS_H2_FRAME_TYPE_COUNT /* always last */ }; enum lws_h2_flags { LWS_H2_FLAG_END_STREAM = 1, LWS_H2_FLAG_END_HEADERS = 4, LWS_H2_FLAG_PADDED = 8, LWS_H2_FLAG_PRIORITY = 0x20, LWS_H2_FLAG_SETTINGS_ACK = 1, }; enum lws_h2_errors { H2_ERR_NO_ERROR, /* Graceful shutdown */ H2_ERR_PROTOCOL_ERROR, /* Protocol error detected */ H2_ERR_INTERNAL_ERROR, /* Implementation fault */ H2_ERR_FLOW_CONTROL_ERROR, /* Flow-control limits exceeded */ H2_ERR_SETTINGS_TIMEOUT, /* Settings not acknowledged */ H2_ERR_STREAM_CLOSED, /* Frame received for closed stream */ H2_ERR_FRAME_SIZE_ERROR, /* Frame size incorrect */ H2_ERR_REFUSED_STREAM, /* Stream not processed */ H2_ERR_CANCEL, /* Stream cancelled */ H2_ERR_COMPRESSION_ERROR, /* Compression state not updated */ H2_ERR_CONNECT_ERROR, /* TCP connection error for CONNECT method */ H2_ERR_ENHANCE_YOUR_CALM, /* Processing capacity exceeded */ H2_ERR_INADEQUATE_SECURITY, /* Negotiated TLS parameters not acceptable */ H2_ERR_HTTP_1_1_REQUIRED, /* Use HTTP/1.1 for the request */ }; enum lws_h2_states { LWS_H2_STATE_IDLE, /* * Send PUSH_PROMISE -> LWS_H2_STATE_RESERVED_LOCAL * Recv PUSH_PROMISE -> LWS_H2_STATE_RESERVED_REMOTE * Send HEADERS -> LWS_H2_STATE_OPEN * Recv HEADERS -> LWS_H2_STATE_OPEN * * - Only PUSH_PROMISE + HEADERS valid to send * - Only HEADERS or PRIORITY valid to receive */ LWS_H2_STATE_RESERVED_LOCAL, /* * Send RST_STREAM -> LWS_H2_STATE_CLOSED * Recv RST_STREAM -> LWS_H2_STATE_CLOSED * Send HEADERS -> LWS_H2_STATE_HALF_CLOSED_REMOTE * * - Only HEADERS, RST_STREAM, or PRIORITY valid to send * - Only RST_STREAM, PRIORITY, or WINDOW_UPDATE valid to receive */ LWS_H2_STATE_RESERVED_REMOTE, /* * Send RST_STREAM -> LWS_H2_STATE_CLOSED * Recv RST_STREAM -> LWS_H2_STATE_CLOSED * Recv HEADERS -> LWS_H2_STATE_HALF_CLOSED_LOCAL * * - Only RST_STREAM, WINDOW_UPDATE, or PRIORITY valid to send * - Only HEADERS, RST_STREAM, or PRIORITY valid to receive */ LWS_H2_STATE_OPEN, /* * Send RST_STREAM -> LWS_H2_STATE_CLOSED * Recv RST_STREAM -> LWS_H2_STATE_CLOSED * Send END_STREAM flag -> LWS_H2_STATE_HALF_CLOSED_LOCAL * Recv END_STREAM flag -> LWS_H2_STATE_HALF_CLOSED_REMOTE */ LWS_H2_STATE_HALF_CLOSED_REMOTE, /* * Send RST_STREAM -> LWS_H2_STATE_CLOSED * Recv RST_STREAM -> LWS_H2_STATE_CLOSED * Send END_STREAM flag -> LWS_H2_STATE_CLOSED * * - Any frame valid to send * - Only WINDOW_UPDATE, PRIORITY, or RST_STREAM valid to receive */ LWS_H2_STATE_HALF_CLOSED_LOCAL, /* * Send RST_STREAM -> LWS_H2_STATE_CLOSED * Recv RST_STREAM -> LWS_H2_STATE_CLOSED * Recv END_STREAM flag -> LWS_H2_STATE_CLOSED * * - Only WINDOW_UPDATE, PRIORITY, and RST_STREAM valid to send * - Any frame valid to receive */ LWS_H2_STATE_CLOSED, /* * - Only PRIORITY, WINDOW_UPDATE (IGNORE) and RST_STREAM (IGNORE) * may be received * * - Only PRIORITY valid to send */ }; #define LWS_H2_STREAM_ID_MASTER 0 #define LWS_H2_SETTINGS_LEN 6 enum http2_hpack_state { HPKS_TYPE, HPKS_IDX_EXT, HPKS_HLEN, HPKS_HLEN_EXT, HPKS_DATA, }; /* * lws general parsimonious header strategy is only store values from known * headers, and refer to them by index. * * That means if we can't map the peer header name to one that lws knows, we * will drop the content but track the indexing with associated_lws_hdr_idx = * LWS_HPACK_IGNORE_ENTRY. */ enum http2_hpack_type { HPKT_INDEXED_HDR_7, /* 1xxxxxxx: just "header field" */ HPKT_INDEXED_HDR_6_VALUE_INCR, /* 01xxxxxx: NEW indexed hdr with value */ HPKT_LITERAL_HDR_VALUE_INCR, /* 01000000: NEW literal hdr with value */ HPKT_INDEXED_HDR_4_VALUE, /* 0000xxxx: indexed hdr with value */ HPKT_INDEXED_HDR_4_VALUE_NEVER, /* 0001xxxx: indexed hdr with value NEVER NEW */ HPKT_LITERAL_HDR_VALUE, /* 00000000: literal hdr with value */ HPKT_LITERAL_HDR_VALUE_NEVER, /* 00010000: literal hdr with value NEVER NEW */ HPKT_SIZE_5 }; #define LWS_HPACK_IGNORE_ENTRY 0xffff struct hpack_dt_entry { char *value; /* malloc'd */ uint16_t value_len; uint16_t hdr_len; /* virtual, for accounting */ uint16_t lws_hdr_idx; /* LWS_HPACK_IGNORE_ENTRY = IGNORE */ }; struct hpack_dynamic_table { struct hpack_dt_entry *entries; /* malloc'd */ uint32_t virtual_payload_usage; uint32_t virtual_payload_max; uint16_t pos; uint16_t used_entries; uint16_t num_entries; }; enum lws_h2_protocol_send_type { LWS_PPS_NONE, LWS_H2_PPS_MY_SETTINGS, LWS_H2_PPS_ACK_SETTINGS, LWS_H2_PPS_PONG, LWS_H2_PPS_GOAWAY, LWS_H2_PPS_RST_STREAM, LWS_H2_PPS_UPDATE_WINDOW, }; struct lws_h2_protocol_send { struct lws_h2_protocol_send *next; /* linked list */ enum lws_h2_protocol_send_type type; union uu { struct { char str[32]; uint32_t highest_sid; uint32_t err; } ga; struct { uint32_t sid; uint32_t err; } rs; struct { uint8_t ping_payload[8]; } ping; struct { uint32_t sid; uint32_t credit; } update_window; } u; }; struct lws_h2_ghost_sid { struct lws_h2_ghost_sid *next; uint32_t sid; }; #define LWS_H2_RX_SCRATCH_SIZE 512 /* * http/2 connection info that is only used by the root connection that has * the network connection. * * h2 tends to spawn many child connections from one network connection, so * it's necessary to make members only needed by the network connection * distinct and only malloc'd on network connections. * * There's only one HPACK parser per network connection. * * But there is an ah per logical child connection... the network connection * fills it but it belongs to the logical child. */ struct lws_h2_netconn { struct http2_settings set; struct hpack_dynamic_table hpack_dyn_table; uint8_t ping_payload[8]; uint8_t one_setting[LWS_H2_SETTINGS_LEN]; char goaway_str[32]; /* for rx */ struct lws *swsi; struct lws_h2_protocol_send *pps; /* linked list */ char *rx_scratch; enum http2_hpack_state hpack; enum http2_hpack_type hpack_type; unsigned int huff:1; unsigned int value:1; unsigned int unknown_header:1; unsigned int cont_exp:1; unsigned int cont_exp_headers:1; unsigned int we_told_goaway:1; unsigned int pad_length:1; unsigned int collected_priority:1; unsigned int is_first_header_char:1; unsigned int zero_huff_padding:1; unsigned int last_action_dyntable_resize:1; uint32_t hdr_idx; uint32_t hpack_len; uint32_t hpack_e_dep; uint32_t count; uint32_t preamble; uint32_t length; uint32_t sid; uint32_t inside; uint32_t highest_sid; uint32_t highest_sid_opened; uint32_t cont_exp_sid; uint32_t dep; uint32_t goaway_last_sid; uint32_t goaway_err; uint32_t hpack_hdr_len; uint32_t rx_scratch_pos; uint32_t rx_scratch_len; uint16_t hpack_pos; uint8_t frame_state; uint8_t type; uint8_t flags; uint8_t padding; uint8_t weight_temp; uint8_t huff_pad; char first_hdr_char; uint8_t hpack_m; uint8_t ext_count; }; struct _lws_h2_related { /* * having this first lets us also re-use all HTTP union code * and in turn, http_mode_related has allocated headers in right * place so we can use the header apis on the wsi directly still */ struct _lws_http_mode_related http; /* MUST BE FIRST IN STRUCT */ struct lws_h2_netconn *h2n; /* malloc'd for root net conn */ struct lws *parent_wsi; struct lws *child_list; struct lws *sibling_list; char *pending_status_body; int tx_cr; int peer_tx_cr_est; unsigned int my_sid; unsigned int child_count; int my_priority; uint32_t dependent_on; unsigned int END_STREAM:1; unsigned int END_HEADERS:1; unsigned int send_END_STREAM:1; unsigned int GOING_AWAY; unsigned int requested_POLLOUT:1; unsigned int skint:1; uint16_t round_robin_POLLOUT; uint16_t count_POLLOUT_children; uint8_t h2_state; /* the RFC7540 state of the connection */ uint8_t weight; uint8_t initialized; }; #define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.h2.parent_wsi) #endif struct _lws_websocket_related { /* cheapest way to deal with ah overlap with ws union transition */ struct _lws_header_related hdr; char *rx_ubuf; unsigned int rx_ubuf_alloc; struct lws *rx_draining_ext_list; struct lws *tx_draining_ext_list; time_t time_next_ping_check; size_t rx_packet_length; unsigned int rx_ubuf_head; unsigned char mask[4]; /* Also used for close content... control opcode == < 128 */ unsigned char ping_payload_buf[128 - 3 + LWS_PRE]; unsigned char ping_payload_len; unsigned char mask_idx; unsigned char opcode; unsigned char rsv; unsigned char rsv_first_msg; /* zero if no info, or length including 2-byte close code */ unsigned char close_in_ping_buffer_len; unsigned char utf8; unsigned char stashed_write_type; unsigned char tx_draining_stashed_wp; unsigned int final:1; unsigned int frame_is_binary:1; unsigned int all_zero_nonce:1; unsigned int this_frame_masked:1; unsigned int inside_frame:1; /* next write will be more of frame */ unsigned int clean_buffer:1; /* buffer not rewritten by extension */ unsigned int payload_is_close:1; /* process as PONG, but it is close */ unsigned int ping_pending_flag:1; unsigned int continuation_possible:1; unsigned int owed_a_fin:1; unsigned int check_utf8:1; unsigned int defeat_check_utf8:1; unsigned int pmce_compressed_message:1; unsigned int stashed_write_pending:1; unsigned int rx_draining_ext:1; unsigned int tx_draining_ext:1; unsigned int send_check_ping:1; unsigned int first_fragment:1; }; #ifdef LWS_WITH_CGI #define LWS_HTTP_CHUNK_HDR_SIZE 16 enum { SIGNIFICANT_HDR_CONTENT_LENGTH, SIGNIFICANT_HDR_LOCATION, SIGNIFICANT_HDR_STATUS, SIGNIFICANT_HDR_TRANSFER_ENCODING, SIGNIFICANT_HDR_COUNT }; /* wsi who is master of the cgi points to an lws_cgi */ struct lws_cgi { struct lws_cgi *cgi_list; struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */ struct lws *wsi; /* owner */ unsigned char *headers_buf; unsigned char *headers_start; unsigned char *headers_pos; unsigned char *headers_dumped; unsigned char *headers_end; lws_filepos_t content_length; lws_filepos_t content_length_seen; int pipe_fds[3][2]; int match[SIGNIFICANT_HDR_COUNT]; int pid; int response_code; int lp; char l[12]; unsigned int being_closed:1; unsigned int explicitly_chunked:1; unsigned char chunked_grace; }; #endif signed char char_to_hex(const char c); #ifndef LWS_NO_CLIENT enum lws_chunk_parser { ELCP_HEX, ELCP_CR, ELCP_CONTENT, ELCP_POST_CR, ELCP_POST_LF, }; #endif enum lws_parse_urldecode_results { LPUR_CONTINUE, LPUR_SWALLOW, LPUR_FORBID, LPUR_EXCESSIVE, }; struct lws_rewrite; #ifdef LWS_WITH_ACCESS_LOG struct lws_access_log { char *header_log; char *user_agent; char *referrer; unsigned long sent; int response; }; #endif struct lws { /* structs */ /* members with mutually exclusive lifetimes are unionized */ union u { struct _lws_http_mode_related http; #ifdef LWS_WITH_HTTP2 struct _lws_h2_related h2; #endif struct _lws_header_related hdr; struct _lws_websocket_related ws; } u; /* lifetime members */ #if defined(LWS_WITH_LIBEV) || defined(LWS_WITH_LIBUV) || defined(LWS_WITH_LIBEVENT) struct lws_io_watcher w_read; #endif #if defined(LWS_WITH_LIBEV) || defined(LWS_WITH_LIBEVENT) struct lws_io_watcher w_write; #endif #ifdef LWS_WITH_ACCESS_LOG struct lws_access_log access_log; #endif time_t pending_timeout_limit; /* pointers */ struct lws_context *context; struct lws_vhost *vhost; struct lws *parent; /* points to parent, if any */ struct lws *child_list; /* points to first child */ struct lws *sibling_list; /* subsequent children at same level */ #ifdef LWS_WITH_CGI struct lws_cgi *cgi; /* wsi being cgi master have one of these */ #endif const struct lws_protocols *protocol; struct lws **same_vh_protocol_prev, *same_vh_protocol_next; struct lws *timeout_list; struct lws **timeout_list_prev; #if defined(LWS_WITH_PEER_LIMITS) struct lws_peer *peer; #endif void *user_space; void *opaque_parent_data; /* rxflow handling */ unsigned char *rxflow_buffer; /* truncated send handling */ unsigned char *trunc_alloc; /* non-NULL means buffering in progress */ #if defined (LWS_WITH_ESP8266) void *premature_rx; unsigned short prem_rx_size, prem_rx_pos; #endif #ifndef LWS_NO_EXTENSIONS const struct lws_extension *active_extensions[LWS_MAX_EXTENSIONS_ACTIVE]; void *act_ext_user[LWS_MAX_EXTENSIONS_ACTIVE]; #endif #ifdef LWS_OPENSSL_SUPPORT SSL *ssl; BIO *client_bio; struct lws *pending_read_list_prev, *pending_read_list_next; #if defined(LWS_WITH_STATS) uint64_t accept_start_us; char seen_rx; #endif #endif #ifdef LWS_WITH_HTTP_PROXY struct lws_rewrite *rw; #endif #ifdef LWS_LATENCY unsigned long action_start; unsigned long latency_start; #endif lws_sock_file_fd_type desc; /* .filefd / .sockfd */ #if defined(LWS_WITH_STATS) uint64_t active_writable_req_us; #endif /* ints */ int position_in_fds_table; uint32_t rxflow_len; uint32_t rxflow_pos; unsigned int trunc_alloc_len; /* size of malloc */ unsigned int trunc_offset; /* where we are in terms of spilling */ unsigned int trunc_len; /* how much is buffered */ #ifndef LWS_NO_CLIENT int chunk_remaining; #endif unsigned int cache_secs; unsigned int hdr_parsing_completed:1; unsigned int http2_substream:1; unsigned int upgraded_to_http2:1; unsigned int seen_nonpseudoheader:1; unsigned int listener:1; unsigned int user_space_externally_allocated:1; unsigned int socket_is_permanently_unusable:1; unsigned int rxflow_change_to:2; unsigned int more_rx_waiting:1; /* has to live here since ah may stick to end */ unsigned int conn_stat_done:1; unsigned int cache_reuse:1; unsigned int cache_revalidate:1; unsigned int cache_intermediaries:1; unsigned int favoured_pollin:1; unsigned int sending_chunked:1; unsigned int already_did_cce:1; unsigned int told_user_closed:1; unsigned int waiting_to_send_close_frame:1; unsigned int ipv6:1; unsigned int parent_carries_io:1; unsigned int parent_pending_cb_on_writable:1; unsigned int cgi_stdout_zero_length:1; unsigned int seen_zero_length_recv:1; unsigned int rxflow_will_be_applied:1; #if defined(LWS_WITH_ESP8266) unsigned int pending_send_completion:3; unsigned int close_is_pending_send_completion:1; #endif #ifdef LWS_WITH_ACCESS_LOG unsigned int access_log_pending:1; #endif #ifndef LWS_NO_CLIENT unsigned int do_ws:1; /* whether we are doing http or ws flow */ unsigned int chunked:1; /* if the clientside connection is chunked */ unsigned int client_rx_avail:1; unsigned int client_http_body_pending:1; #endif #ifdef LWS_WITH_HTTP_PROXY unsigned int perform_rewrite:1; #endif #ifndef LWS_NO_EXTENSIONS unsigned int extension_data_pending:1; #endif #ifdef LWS_OPENSSL_SUPPORT unsigned int use_ssl:4; #endif #ifdef _WIN32 unsigned int sock_send_blocking:1; #endif #ifdef LWS_OPENSSL_SUPPORT unsigned int redirect_to_https:1; #endif /* volatile to make sure code is aware other thread can change */ volatile unsigned int handling_pollout:1; volatile unsigned int leave_pollout_active:1; #ifndef LWS_NO_CLIENT unsigned short c_port; #endif /* chars */ #ifndef LWS_NO_EXTENSIONS unsigned char count_act_ext; #endif uint8_t ietf_spec_revision; char mode; /* enum connection_mode */ char state; /* enum lws_connection_states */ char state_pre_close; char lws_rx_parse_state; /* enum lws_rx_parse_state */ char rx_frame_type; /* enum lws_write_protocol */ char pending_timeout; /* enum pending_timeout */ char tsi; /* thread service index we belong to */ char protocol_interpret_idx; char redirects; uint8_t rxflow_bitmap; #ifdef LWS_WITH_CGI char cgi_channel; /* which of stdin/out/err */ char hdr_state; #endif #ifndef LWS_NO_CLIENT char chunk_parser; /* enum lws_chunk_parser */ #endif #if defined(LWS_WITH_CGI) || !defined(LWS_NO_CLIENT) char reason_bf; /* internal writeable callback reason bitfield */ #endif }; #define lws_is_flowcontrolled(w) (!!(wsi->rxflow_bitmap)) LWS_EXTERN int log_level; LWS_EXTERN int lws_socket_bind(struct lws_vhost *vhost, lws_sockfd_type sockfd, int port, const char *iface); #if defined(LWS_WITH_IPV6) LWS_EXTERN unsigned long lws_get_addr_scope(const char *ipaddr); #endif LWS_EXTERN void lws_close_free_wsi(struct lws *wsi, enum lws_close_status); LWS_EXTERN void lws_free_wsi(struct lws *wsi); LWS_EXTERN int remove_wsi_socket_from_fds(struct lws *wsi); LWS_EXTERN int lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len); #ifndef LWS_LATENCY static inline void lws_latency(struct lws_context *context, struct lws *wsi, const char *action, int ret, int completion) { do { (void)context; (void)wsi; (void)action; (void)ret; (void)completion; } while (0); } static inline void lws_latency_pre(struct lws_context *context, struct lws *wsi) { do { (void)context; (void)wsi; } while (0); } #else #define lws_latency_pre(_context, _wsi) lws_latency(_context, _wsi, NULL, 0, 0) extern void lws_latency(struct lws_context *context, struct lws *wsi, const char *action, int ret, int completion); #endif LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_client_rx_sm(struct lws *wsi, unsigned char c); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_parse(struct lws *wsi, unsigned char c); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_parse_urldecode(struct lws *wsi, uint8_t *_c); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_http_action(struct lws *wsi); LWS_EXTERN int lws_b64_selftest(void); LWS_EXTERN int lws_service_flag_pending(struct lws_context *context, int tsi); #if defined(_WIN32) || defined(LWS_WITH_ESP8266) LWS_EXTERN struct lws * wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd); LWS_EXTERN int insert_wsi(struct lws_context *context, struct lws *wsi); LWS_EXTERN int delete_from_fd(struct lws_context *context, lws_sockfd_type fd); #else #define wsi_from_fd(A,B) A->lws_lookup[B] #define insert_wsi(A,B) assert(A->lws_lookup[B->desc.sockfd] == 0); A->lws_lookup[B->desc.sockfd]=B #define delete_from_fd(A,B) A->lws_lookup[B]=0 #endif LWS_EXTERN int LWS_WARN_UNUSED_RESULT insert_wsi_socket_into_fds(struct lws_context *context, struct lws *wsi); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_service_timeout_check(struct lws *wsi, unsigned int sec); LWS_EXTERN void lws_remove_from_timeout_list(struct lws *wsi); LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT lws_client_connect_2(struct lws *wsi); LWS_VISIBLE struct lws * LWS_WARN_UNUSED_RESULT lws_client_reset(struct lws **wsi, int ssl, const char *address, int port, const char *path, const char *host); LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT lws_create_new_server_wsi(struct lws_vhost *vhost); LWS_EXTERN char * LWS_WARN_UNUSED_RESULT lws_generate_client_handshake(struct lws *wsi, char *pkt); LWS_EXTERN int lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd); LWS_EXTERN struct lws * lws_client_connect_via_info2(struct lws *wsi); LWS_EXTERN int _lws_destroy_ah(struct lws_context_per_thread *pt, struct allocated_headers *ah); /* * EXTENSIONS */ #ifndef LWS_NO_EXTENSIONS LWS_VISIBLE void lws_context_init_extensions(struct lws_context_creation_info *info, struct lws_context *context); LWS_EXTERN int lws_any_extension_handled(struct lws *wsi, enum lws_extension_callback_reasons r, void *v, size_t len); LWS_EXTERN int lws_ext_cb_active(struct lws *wsi, int reason, void *buf, int len); LWS_EXTERN int lws_ext_cb_all_exts(struct lws_context *context, struct lws *wsi, int reason, void *arg, int len); #else #define lws_any_extension_handled(_a, _b, _c, _d) (0) #define lws_ext_cb_active(_a, _b, _c, _d) (0) #define lws_ext_cb_all_exts(_a, _b, _c, _d, _e) (0) #define lws_issue_raw_ext_access lws_issue_raw #define lws_context_init_extensions(_a, _b) #endif LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_client_interpret_server_handshake(struct lws *wsi); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_rx_sm(struct lws *wsi, unsigned char c); LWS_EXTERN int lws_payload_until_length_exhausted(struct lws *wsi, unsigned char **buf, size_t *len); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_issue_raw_ext_access(struct lws *wsi, unsigned char *buf, size_t len); LWS_EXTERN void lws_union_transition(struct lws *wsi, enum connection_mode mode); LWS_EXTERN int LWS_WARN_UNUSED_RESULT user_callback_handle_rxflow(lws_callback_function, struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len); #ifdef LWS_WITH_HTTP2 struct lws * lws_h2_get_nth_child(struct lws *wsi, int n); LWS_EXTERN void lws_h2_init(struct lws *wsi); LWS_EXTERN int lws_h2_settings(struct lws *nwsi, struct http2_settings *settings, unsigned char *buf, int len); LWS_EXTERN int lws_h2_parser(struct lws *wsi, unsigned char c); LWS_EXTERN int lws_h2_do_pps_send(struct lws *wsi); LWS_EXTERN int lws_h2_frame_write(struct lws *wsi, int type, int flags, unsigned int sid, unsigned int len, unsigned char *buf); LWS_EXTERN struct lws * lws_h2_wsi_from_id(struct lws *wsi, unsigned int sid); LWS_EXTERN int lws_hpack_interpret(struct lws *wsi, unsigned char c); LWS_EXTERN int lws_add_http2_header_by_name(struct lws *wsi, const unsigned char *name, const unsigned char *value, int length, unsigned char **p, unsigned char *end); LWS_EXTERN int lws_add_http2_header_by_token(struct lws *wsi, enum lws_token_indexes token, const unsigned char *value, int length, unsigned char **p, unsigned char *end); LWS_EXTERN int lws_add_http2_header_status(struct lws *wsi, unsigned int code, unsigned char **p, unsigned char *end); LWS_EXTERN int lws_h2_configure_if_upgraded(struct lws *wsi); LWS_EXTERN void lws_hpack_destroy_dynamic_header(struct lws *wsi); LWS_EXTERN int lws_hpack_dynamic_size(struct lws *wsi, int size); LWS_EXTERN int lws_h2_goaway(struct lws *wsi, uint32_t err, const char *reason); LWS_EXTERN int lws_h2_tx_cr_get(struct lws *wsi); LWS_EXTERN void lws_h2_tx_cr_consume(struct lws *wsi, int consumed); LWS_EXTERN int lws_hdr_extant(struct lws *wsi, enum lws_token_indexes h); LWS_EXTERN void lws_pps_schedule(struct lws *wsi, struct lws_h2_protocol_send *pss); LWS_EXTERN const struct http2_settings lws_h2_defaults; #else #define lws_h2_configure_if_upgraded(x) #endif LWS_EXTERN int lws_plat_set_socket_options(struct lws_vhost *vhost, lws_sockfd_type fd); LWS_EXTERN int lws_plat_check_connection_error(struct lws *wsi); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_header_table_attach(struct lws *wsi, int autoservice); LWS_EXTERN int lws_header_table_detach(struct lws *wsi, int autoservice); LWS_EXTERN void lws_header_table_reset(struct lws *wsi, int autoservice); void _lws_header_table_reset(struct allocated_headers *ah); void lws_header_table_force_to_detachable_state(struct lws *wsi); int lws_header_table_is_in_detachable_state(struct lws *wsi); LWS_EXTERN char * LWS_WARN_UNUSED_RESULT lws_hdr_simple_ptr(struct lws *wsi, enum lws_token_indexes h); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_hdr_simple_create(struct lws *wsi, enum lws_token_indexes h, const char *s); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_ensure_user_space(struct lws *wsi); LWS_EXTERN int lws_change_pollfd(struct lws *wsi, int _and, int _or); #ifndef LWS_NO_SERVER int lws_context_init_server(struct lws_context_creation_info *info, struct lws_vhost *vhost); LWS_EXTERN struct lws_vhost * lws_select_vhost(struct lws_context *context, int port, const char *servername); LWS_EXTERN int handshake_0405(struct lws_context *context, struct lws *wsi); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_interpret_incoming_packet(struct lws *wsi, unsigned char **buf, size_t len); LWS_EXTERN void lws_server_get_canonical_hostname(struct lws_context *context, struct lws_context_creation_info *info); #else #define lws_context_init_server(_a, _b) (0) #define lws_interpret_incoming_packet(_a, _b, _c) (0) #define lws_server_get_canonical_hostname(_a, _b) #endif #ifndef LWS_NO_DAEMONIZE LWS_EXTERN int get_daemonize_pid(); #else #define get_daemonize_pid() (0) #endif #if !defined(LWS_WITH_ESP8266) LWS_EXTERN int LWS_WARN_UNUSED_RESULT interface_to_sa(struct lws_vhost *vh, const char *ifname, struct sockaddr_in *addr, size_t addrlen); #endif LWS_EXTERN void lwsl_emit_stderr(int level, const char *line); enum lws_ssl_capable_status { LWS_SSL_CAPABLE_ERROR = -1, LWS_SSL_CAPABLE_MORE_SERVICE = -2, }; #ifndef LWS_OPENSSL_SUPPORT #define LWS_SSL_ENABLED(context) (0) #define lws_context_init_server_ssl(_a, _b) (0) #define lws_ssl_destroy(_a) #define lws_context_init_http2_ssl(_a) #define lws_ssl_capable_read lws_ssl_capable_read_no_ssl #define lws_ssl_capable_write lws_ssl_capable_write_no_ssl #define lws_ssl_pending lws_ssl_pending_no_ssl #define lws_server_socket_service_ssl(_b, _c) (0) #define lws_ssl_close(_a) (0) #define lws_ssl_context_destroy(_a) #define lws_ssl_SSL_CTX_destroy(_a) #define lws_ssl_remove_wsi_from_buffered_list(_a) #define lws_context_init_ssl_library(_a) #define lws_ssl_anybody_has_buffered_read_tsi(_a, _b) (0) #else #define LWS_SSL_ENABLED(context) (context->use_ssl) LWS_EXTERN int openssl_websocket_private_data_index; LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_ssl_capable_write(struct lws *wsi, unsigned char *buf, int len); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_ssl_pending(struct lws *wsi); LWS_EXTERN int lws_context_init_ssl_library(struct lws_context_creation_info *info); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_server_socket_service_ssl(struct lws *new_wsi, lws_sockfd_type accept_fd); LWS_EXTERN int lws_ssl_close(struct lws *wsi); LWS_EXTERN void lws_ssl_SSL_CTX_destroy(struct lws_vhost *vhost); LWS_EXTERN void lws_ssl_context_destroy(struct lws_context *context); LWS_VISIBLE void lws_ssl_remove_wsi_from_buffered_list(struct lws *wsi); LWS_EXTERN int lws_ssl_client_bio_create(struct lws *wsi); LWS_EXTERN int lws_ssl_client_connect1(struct lws *wsi); LWS_EXTERN int lws_ssl_client_connect2(struct lws *wsi); LWS_EXTERN void lws_ssl_elaborate_error(void); LWS_EXTERN int lws_ssl_anybody_has_buffered_read_tsi(struct lws_context *context, int tsi); #ifndef LWS_NO_SERVER LWS_EXTERN int lws_context_init_server_ssl(struct lws_context_creation_info *info, struct lws_vhost *vhost); #else #define lws_context_init_server_ssl(_a, _b) (0) #endif LWS_EXTERN void lws_ssl_destroy(struct lws_vhost *vhost); /* HTTP2-related */ #ifdef LWS_WITH_HTTP2 LWS_EXTERN void lws_context_init_http2_ssl(struct lws_vhost *vhost); #else #define lws_context_init_http2_ssl(_a) #endif #endif #if LWS_MAX_SMP > 1 static LWS_INLINE void lws_pt_mutex_init(struct lws_context_per_thread *pt) { pthread_mutex_init(&pt->lock, NULL); } static LWS_INLINE void lws_pt_mutex_destroy(struct lws_context_per_thread *pt) { pthread_mutex_destroy(&pt->lock); } static LWS_INLINE void lws_pt_lock(struct lws_context_per_thread *pt) { if (!pt->lock_depth++) pthread_mutex_lock(&pt->lock); } static LWS_INLINE void lws_pt_unlock(struct lws_context_per_thread *pt) { if (!(--pt->lock_depth)) pthread_mutex_unlock(&pt->lock); } static LWS_INLINE void lws_context_lock(struct lws_context *context) { if (!context->lock_depth++) pthread_mutex_lock(&context->lock); } static LWS_INLINE void lws_context_unlock(struct lws_context *context) { if (!(--context->lock_depth)) pthread_mutex_unlock(&context->lock); } #else #define lws_pt_mutex_init(_a) (void)(_a) #define lws_pt_mutex_destroy(_a) (void)(_a) #define lws_pt_lock(_a) (void)(_a) #define lws_pt_unlock(_a) (void)(_a) #define lws_context_lock(_a) (void)(_a) #define lws_context_unlock(_a) (void)(_a) #endif LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_ssl_pending_no_ssl(struct lws *wsi); #ifdef LWS_WITH_HTTP_PROXY struct lws_rewrite { hubbub_parser *parser; hubbub_parser_optparams params; const char *from, *to; int from_len, to_len; unsigned char *p, *end; struct lws *wsi; }; static LWS_INLINE int hstrcmp(hubbub_string *s, const char *p, int len) { if (s->len != len) return 1; return strncmp((const char *)s->ptr, p, len); } typedef hubbub_error (*hubbub_callback_t)(const hubbub_token *token, void *pw); LWS_EXTERN struct lws_rewrite * lws_rewrite_create(struct lws *wsi, hubbub_callback_t cb, const char *from, const char *to); LWS_EXTERN void lws_rewrite_destroy(struct lws_rewrite *r); LWS_EXTERN int lws_rewrite_parse(struct lws_rewrite *r, const unsigned char *in, int in_len); #endif #ifndef LWS_NO_CLIENT LWS_EXTERN int lws_client_socket_service(struct lws_context *context, struct lws *wsi, struct lws_pollfd *pollfd); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_http_transaction_completed_client(struct lws *wsi); #ifdef LWS_OPENSSL_SUPPORT LWS_EXTERN int lws_context_init_client_ssl(struct lws_context_creation_info *info, struct lws_vhost *vhost); LWS_EXTERN void lws_ssl_info_callback(const SSL *ssl, int where, int ret); #else #define lws_context_init_client_ssl(_a, _b) (0) #endif LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len); LWS_EXTERN void lws_decode_ssl_error(void); #else #define lws_context_init_client_ssl(_a, _b) (0) #define lws_handshake_client(_a, _b, _c) (0) #endif LWS_EXTERN int _lws_rx_flow_control(struct lws *wsi); LWS_EXTERN int _lws_change_pollfd(struct lws *wsi, int _and, int _or, struct lws_pollargs *pa); #ifndef LWS_NO_SERVER LWS_EXTERN int lws_server_socket_service(struct lws_context *context, struct lws *wsi, struct lws_pollfd *pollfd); LWS_EXTERN int lws_handshake_server(struct lws *wsi, unsigned char **buf, size_t len); #else #define lws_server_socket_service(_a, _b, _c) (0) #define lws_handshake_server(_a, _b, _c) (0) #endif #ifdef LWS_WITH_ACCESS_LOG LWS_EXTERN int lws_access_log(struct lws *wsi); LWS_EXTERN void lws_prepare_access_log_info(struct lws *wsi, char *uri_ptr, int meth); #else #define lws_access_log(_a) #endif LWS_EXTERN int lws_cgi_kill_terminated(struct lws_context_per_thread *pt); LWS_EXTERN void lws_cgi_remove_and_kill(struct lws *wsi); int lws_protocol_init(struct lws_context *context); int lws_bind_protocol(struct lws *wsi, const struct lws_protocols *p); const struct lws_http_mount * lws_find_mount(struct lws *wsi, const char *uri_ptr, int uri_len); /* * custom allocator */ LWS_EXTERN void * lws_realloc(void *ptr, size_t size, const char *reason); LWS_EXTERN void * LWS_WARN_UNUSED_RESULT lws_zalloc(size_t size, const char *reason); #ifdef LWS_PLAT_OPTEE void *lws_malloc(size_t size, const char *reason); void lws_free(void *p); #define lws_free_set_NULL(P) do { lws_free(P); (P) = NULL; } while(0) #else #define lws_malloc(S, R) lws_realloc(NULL, S, R) #define lws_free(P) lws_realloc(P, 0, "lws_free") #define lws_free_set_NULL(P) do { lws_realloc(P, 0, "free"); (P) = NULL; } while(0) #endif const struct lws_plat_file_ops * lws_vfs_select_fops(const struct lws_plat_file_ops *fops, const char *vfs_path, const char **vpath); /* lws_plat_ */ LWS_EXTERN void lws_plat_delete_socket_from_fds(struct lws_context *context, struct lws *wsi, int m); LWS_EXTERN void lws_plat_insert_socket_into_fds(struct lws_context *context, struct lws *wsi); LWS_EXTERN void lws_plat_service_periodic(struct lws_context *context); LWS_EXTERN int lws_plat_change_pollfd(struct lws_context *context, struct lws *wsi, struct lws_pollfd *pfd); LWS_EXTERN void lws_add_wsi_to_draining_ext_list(struct lws *wsi); LWS_EXTERN void lws_remove_wsi_from_draining_ext_list(struct lws *wsi); LWS_EXTERN int lws_plat_context_early_init(void); LWS_EXTERN void lws_plat_context_early_destroy(struct lws_context *context); LWS_EXTERN void lws_plat_context_late_destroy(struct lws_context *context); LWS_EXTERN int lws_poll_listen_fd(struct lws_pollfd *fd); LWS_EXTERN int lws_plat_service(struct lws_context *context, int timeout_ms); LWS_EXTERN LWS_VISIBLE int _lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi); LWS_EXTERN int lws_plat_init(struct lws_context *context, struct lws_context_creation_info *info); LWS_EXTERN void lws_plat_drop_app_privileges(struct lws_context_creation_info *info); LWS_EXTERN unsigned long long time_in_microseconds(void); LWS_EXTERN const char * LWS_WARN_UNUSED_RESULT lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_plat_inet_pton(int af, const char *src, void *dst); LWS_EXTERN int LWS_WARN_UNUSED_RESULT lws_check_utf8(unsigned char *state, unsigned char *buf, size_t len); LWS_EXTERN int alloc_file(struct lws_context *context, const char *filename, uint8_t **buf, lws_filepos_t *amount); LWS_EXTERN int alloc_pem_to_der_file(struct lws_context *context, const char *filename, uint8_t **buf, lws_filepos_t *amount); LWS_EXTERN void lws_same_vh_protocol_remove(struct lws *wsi); LWS_EXTERN void lws_same_vh_protocol_insert(struct lws *wsi, int n); #if defined(LWS_WITH_STATS) void lws_stats_atomic_bump(struct lws_context * context, struct lws_context_per_thread *pt, int index, uint64_t bump); void lws_stats_atomic_max(struct lws_context * context, struct lws_context_per_thread *pt, int index, uint64_t val); #else static inline uint64_t lws_stats_atomic_bump(struct lws_context * context, struct lws_context_per_thread *pt, int index, uint64_t bump) { (void)context; (void)pt; (void)index; (void)bump; return 0; } static inline uint64_t lws_stats_atomic_max(struct lws_context * context, struct lws_context_per_thread *pt, int index, uint64_t val) { (void)context; (void)pt; (void)index; (void)val; return 0; } #endif /* socks */ void socks_generate_msg(struct lws *wsi, enum socks_msg_type type, ssize_t *msg_len); #if defined(LWS_WITH_PEER_LIMITS) void lws_peer_track_wsi_close(struct lws_context *context, struct lws_peer *peer); int lws_peer_confirm_ah_attach_ok(struct lws_context *context, struct lws_peer *peer); void lws_peer_track_ah_detach(struct lws_context *context, struct lws_peer *peer); void lws_peer_cull_peer_wait_list(struct lws_context *context); struct lws_peer * lws_get_or_create_peer(struct lws_vhost *vhost, lws_sockfd_type sockfd); void lws_peer_add_wsi(struct lws_context *context, struct lws_peer *peer, struct lws *wsi); #endif #ifdef __cplusplus }; #endif