libwebsockets/lib/private-libwebsockets.h
Andy Green 020770566e plugins
This adds support for dynamically loaded plugins at runtime, which
can expose their own protocols or extensions transparently.

With these changes lwsws defaults to OFF in cmake, and if enabled it
automatically enables plugins and libuv support.

Signed-off-by: Andy Green <andy@warmcat.com>
2016-04-07 09:38:08 +08:00

1724 lines
44 KiB
C

/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2016 Andy Green <andy@warmcat.com>
*
* 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
#ifdef LWS_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
#include <limits.h>
#include <stdarg.h>
#include <assert.h>
#if LWS_MAX_SMP > 1
#include <pthread.h>
#endif
#ifdef LWS_HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if defined(WIN32) || defined(_WIN32)
#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 LWS_POLLHUP (FD_CLOSE)
#define LWS_POLLIN (FD_READ | FD_ACCEPT)
#define LWS_POLLOUT (FD_WRITE)
#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 <winsock2.h>
#include <ws2tcpip.h>
#include <windows.h>
#include <tchar.h>
#ifdef LWS_HAVE_IN6ADDR_H
#include <in6addr.h>
#endif
#include <mstcpip.h>
#ifndef __func__
#define __func__ __FUNCTION__
#endif
#ifdef _WIN32_WCE
#define vsnprintf _vsnprintf
#else
#ifdef LWS_HAVE__VSNPRINTF
#define vsnprintf _vsnprintf
#endif
#endif
#ifdef LWS_HAVE__SNPRINTF
#define snprintf _snprintf
#endif
#else /* not windows --> */
#include <fcntl.h>
#include <strings.h>
#include <unistd.h>
#include <sys/types.h>
#ifndef MBED_OPERATORS
#ifndef __cplusplus
#include <errno.h>
#endif
#include <netdb.h>
#include <signal.h>
#include <sys/socket.h>
#ifdef LWS_WITH_HTTP_PROXY
#include <hubbub/hubbub.h>
#include <hubbub/parser.h>
#endif
#ifdef LWS_BUILTIN_GETIFADDRS
#include <getifaddrs.h>
#else
#include <ifaddrs.h>
#endif
#if defined (__ANDROID__)
#include <syslog.h>
#else
#include <sys/syslog.h>
#endif
#include <sys/un.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <poll.h>
#ifdef LWS_USE_LIBEV
#include <ev.h>
#endif
#ifdef LWS_USE_LIBUV
#include <uv.h>
#endif
#include <sys/mman.h>
#endif /* MBED */
#ifndef LWS_NO_FORK
#ifdef LWS_HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#endif
#include <sys/time.h>
#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_POLLHUP (POLLHUP|POLLERR)
#define LWS_POLLIN (POLLIN)
#define LWS_POLLOUT (POLLOUT)
static inline int compatible_close(int fd) { return close(fd); }
#define lws_set_blocking_send(wsi)
#ifdef MBED_OPERATORS
#define lws_socket_is_valid(x) ((x) != NULL)
#define LWS_SOCK_INVALID (NULL)
#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 <cyassl/openssl/ssl.h>
#include <cyassl/error-ssl.h>
#else
#include <wolfssl/openssl/ssl.h>
#include <wolfssl/error-ssl.h>
#endif /* not USE_OLD_CYASSL */
#else
#if defined(LWS_USE_POLARSSL)
#include <polarssl/ssl.h>
#include <polarssl/error.h>
#include <polarssl/md5.h>
#include <polarssl/sha1.h>
#include <polarssl/ecdh.h>
#else
#if defined(LWS_USE_MBEDTLS)
#include <mbedtls/ssl.h>
#include <mbedtls/error.h>
#include <mbedtls/md5.h>
#include <mbedtls/sha1.h>
#include <mbedtls/ecdh.h>
#else
#include <openssl/ssl.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/md5.h>
#include <openssl/sha.h>
#ifdef LWS_HAVE_OPENSSL_ECDH_H
#include <openssl/ecdh.h>
#endif
#endif /* not USE_MBEDTLS */
#endif /* not USE_POLARSSL */
#endif /* not USE_WOLFSSL */
#endif
#include "libwebsockets.h"
#if defined(MBED_OPERATORS)
#undef compatible_close
#define compatible_close(fd) mbed3_delete_tcp_stream_socket(fd)
#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
#ifndef u_int64_t
typedef unsigned __int64 u_int64_t;
#endif
#undef __P
#ifndef __P
#if __STDC__
#define __P(protos) protos
#else
#define __P(protos) ()
#endif
#endif
#else
#include <sys/stat.h>
#include <sys/time.h>
#if defined(__APPLE__)
#include <machine/endian.h>
#elif defined(__FreeBSD__)
#include <sys/endian.h>
#elif defined(__linux__)
#include <endian.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__QNX__)
#include <gulliver.h>
#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(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
#ifdef _WIN32
#ifndef FD_HASHTABLE_MODULUS
#define FD_HASHTABLE_MODULUS 32
#endif
#endif
#ifndef LWS_DEF_HEADER_LEN
#define LWS_DEF_HEADER_LEN 1024
#endif
#ifndef LWS_DEF_HEADER_POOL
#define LWS_DEF_HEADER_POOL 16
#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
#define LWS_MAX_SOCKET_IO_BUF 4096
#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_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,
};
enum http_connection_type {
HTTP_CONNECTION_CLOSE,
HTTP_CONNECTION_KEEP_ALIVE
};
enum lws_pending_protocol_send {
LWS_PPS_NONE,
LWS_PPS_HTTP2_MY_SETTINGS,
LWS_PPS_HTTP2_ACK_SETTINGS,
LWS_PPS_HTTP2_PONG,
};
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
};
enum connection_mode {
LWSCM_HTTP_SERVING,
LWSCM_HTTP_CLIENT, /* we are client to someone else's server */
LWSCM_HTTP_SERVING_ACCEPTED, /* actual HTTP service going on */
LWSCM_HTTP_CLIENT_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,
/* transient modes */
LWSCM_WSCL_WAITING_CONNECT,
LWSCM_WSCL_WAITING_PROXY_REPLY,
LWSCM_WSCL_ISSUE_HANDSHAKE,
LWSCM_WSCL_ISSUE_HANDSHAKE2,
LWSCM_WSCL_WAITING_SSL,
LWSCM_WSCL_WAITING_SERVER_REPLY,
LWSCM_WSCL_WAITING_EXTENSION_CONNECT,
LWSCM_WSCL_PENDING_CANDIDATE_CHILD,
/* special internal types */
LWSCM_SERVER_LISTENER,
LWSCM_CGI, /* stdin, stdout, stderr for another cgi master wsi */
};
enum {
LWS_RXFLOW_ALLOW = (1 << 0),
LWS_RXFLOW_PENDING_CHANGE = (1 << 1),
};
/* 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_USE_LIBEV) || defined(LWS_USE_LIBUV)
struct lws_io_watcher {
#ifdef LWS_USE_LIBEV
ev_io ev_watcher;
#endif
#ifdef LWS_USE_LIBUV
uv_poll_t uv_watcher;
#endif
struct lws_context *context;
};
struct lws_signal_watcher {
#ifdef LWS_USE_LIBEV
ev_signal ev_watcher;
#endif
#ifdef LWS_USE_LIBUV
uv_signal_t uv_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.
*/
struct lws_fragments {
unsigned short offset;
unsigned short len;
unsigned char nfrag; /* which ah->frag[] continues this content, or 0 */
};
/*
* 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 lws *wsi; /* owner */
char *data; /* prepared by context init to point to dedicated storage */
/*
* the randomly ordered fragments, indexed by frag_index and
* lws_fragments->nfrag for continuation.
*/
struct lws_fragments frags[WSI_TOKEN_COUNT * 2];
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[]
*/
unsigned char frag_index[WSI_TOKEN_COUNT];
unsigned char rx[2048];
unsigned int rxpos;
unsigned int rxlen;
#ifndef LWS_NO_CLIENT
char initial_handshake_hash_base64[30];
#endif
unsigned short pos;
unsigned char in_use;
unsigned char 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;
struct lws *rx_draining_ext_list;
struct lws *tx_draining_ext_list;
struct lws *timeout_list;
struct lws_context *context;
#ifdef LWS_WITH_CGI
struct lws_cgi *cgi_list;
#endif
void *http_header_data;
struct allocated_headers *ah_pool;
struct lws *ah_wait_list;
int ah_wait_list_length;
#ifdef LWS_OPENSSL_SUPPORT
struct lws *pending_read_list; /* linked list */
#endif
#ifndef LWS_NO_SERVER
struct lws *wsi_listening;
#endif
#if defined(LWS_USE_LIBEV)
struct ev_loop *io_loop_ev;
#endif
#if defined(LWS_USE_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_USE_LIBEV)
struct lws_io_watcher w_accept;
#endif
#if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
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
int dummy_pipe_fds[2];
#endif
unsigned int fds_count;
short ah_count_in_use;
unsigned char tid;
};
struct lws_http_mount {
struct lws_http_mount *mount_next;
const char *mountpoint; /* mountpoint in http pathspace, eg, "/" */
const char *origin; /* path to be mounted, eg, "/var/www/warmcat.com" */
const char *def; /* default target, eg, "index.html" */
unsigned char origin_protocol;
unsigned char mountpoint_len;
};
/*
* virtual host -related context information
* vhostwide SSL context
* vhostwide proxy
*
* heirarchy:
*
* 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 {
char http_proxy_address[128];
char proxy_basic_auth_token[128];
struct lws_context *context;
struct lws_vhost *vhost_next;
struct lws_http_mount *mount_list;
struct lws *lserv_wsi;
const char *name;
const char *iface;
const struct lws_protocols *protocols;
void **protocol_vh_privs;
#ifdef LWS_OPENSSL_SUPPORT
SSL_CTX *ssl_ctx;
SSL_CTX *ssl_client_ctx;
#endif
#ifndef LWS_NO_EXTENSIONS
const struct lws_extension *extensions;
#endif
int listen_port;
unsigned int http_proxy_port;
int count_protocols;
int ka_time;
int ka_probes;
int ka_interval;
#ifdef LWS_OPENSSL_SUPPORT
int use_ssl;
int allow_non_ssl_on_ssl_port;
unsigned int user_supplied_ssl_ctx:1;
#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;
struct lws_plat_file_ops fops;
struct lws_context_per_thread pt[LWS_MAX_SMP];
#ifdef _WIN32
/* different implementation between unix and windows */
struct lws_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
#else
struct lws **lws_lookup; /* fd to wsi */
#endif
struct lws_vhost *vhost_list;
struct lws_plugin *plugin_list;
const struct lws_token_limits *token_limits;
void *user_space;
#if defined(LWS_USE_LIBEV)
lws_ev_signal_cb_t * lws_ev_sigint_cb;
#endif
#if defined(LWS_USE_LIBUV)
uv_signal_cb lws_uv_sigint_cb;
#endif
char canonical_hostname[128];
#ifdef LWS_LATENCY
unsigned long worst_latency;
char worst_latency_info[256];
#endif
int max_fds;
#if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
int use_ev_sigint;
#endif
int started_with_parent;
int uid, gid;
int fd_random;
#ifdef LWS_OPENSSL_SUPPORT
#define lws_ssl_anybody_has_buffered_read(w) \
(w->vhost->use_ssl && \
w->context->pt[(int)w->tsi].pending_read_list)
#define lws_ssl_anybody_has_buffered_read_tsi(c, t) \
(/*c->use_ssl && */ \
c->pt[(int)t].pending_read_list)
#else
#define lws_ssl_anybody_has_buffered_read(ctx) (0)
#define lws_ssl_anybody_has_buffered_read_tsi(ctx, t) (0)
#endif
int count_wsi_allocated;
unsigned int options;
unsigned int fd_limit_per_thread;
unsigned int timeout_secs;
/*
* 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_data;
short max_http_header_pool;
short count_threads;
short plugin_protocol_count;
short plugin_extension_count;
unsigned int being_destroyed:1;
unsigned int requested_kill:1;
unsigned int protocol_init_done:1;
};
#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);
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_USE_LIBEV)
LWS_EXTERN void
lws_libev_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
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
#define lws_feature_status_libev(_a) \
lwsl_notice("libev support not compiled in\n")
#else
#define lws_feature_status_libev(_a)
#endif
#endif
#if defined(LWS_USE_LIBUV)
LWS_EXTERN void
lws_libuv_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
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);
#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
#define lws_feature_status_libuv(_a) \
lwsl_notice("libuv support not compiled in\n")
#else
#define lws_feature_status_libuv(_a)
#endif
#endif
#ifdef LWS_USE_IPV6
#define LWS_IPV6_ENABLED(context) \
(!lws_check_opt(context->options, LWS_SERVER_OPTION_DISABLE_IPV6))
#else
#define LWS_IPV6_ENABLED(context) (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[1024];
char host[256];
char origin[256];
char protocol[256];
char method[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 short current_token_limit;
#ifndef LWS_NO_CLIENT
unsigned short c_port;
#endif
char esc_stash;
char post_literal_equal;
unsigned char parser_state; /* enum lws_token_indexes */
char redirects;
};
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;
unsigned long filepos;
unsigned long filelen;
lws_filefd_type fd;
enum http_version request_version;
enum http_connection_type connection_type;
unsigned int content_length;
unsigned int content_remain;
};
#ifdef LWS_USE_HTTP2
enum lws_http2_settings {
LWS_HTTP2_SETTINGS__HEADER_TABLE_SIZE = 1,
LWS_HTTP2_SETTINGS__ENABLE_PUSH,
LWS_HTTP2_SETTINGS__MAX_CONCURRENT_STREAMS,
LWS_HTTP2_SETTINGS__INITIAL_WINDOW_SIZE,
LWS_HTTP2_SETTINGS__MAX_FRAME_SIZE,
LWS_HTTP2_SETTINGS__MAX_HEADER_LIST_SIZE,
LWS_HTTP2_SETTINGS__COUNT /* always last */
};
enum lws_http2_wellknown_frame_types {
LWS_HTTP2_FRAME_TYPE_DATA,
LWS_HTTP2_FRAME_TYPE_HEADERS,
LWS_HTTP2_FRAME_TYPE_PRIORITY,
LWS_HTTP2_FRAME_TYPE_RST_STREAM,
LWS_HTTP2_FRAME_TYPE_SETTINGS,
LWS_HTTP2_FRAME_TYPE_PUSH_PROMISE,
LWS_HTTP2_FRAME_TYPE_PING,
LWS_HTTP2_FRAME_TYPE_GOAWAY,
LWS_HTTP2_FRAME_TYPE_WINDOW_UPDATE,
LWS_HTTP2_FRAME_TYPE_CONTINUATION,
LWS_HTTP2_FRAME_TYPE_COUNT /* always last */
};
enum lws_http2_flags {
LWS_HTTP2_FLAG_END_STREAM = 1,
LWS_HTTP2_FLAG_END_HEADERS = 4,
LWS_HTTP2_FLAG_PADDED = 8,
LWS_HTTP2_FLAG_PRIORITY = 0x20,
LWS_HTTP2_FLAG_SETTINGS_ACK = 1,
};
#define LWS_HTTP2_STREAM_ID_MASTER 0
#define LWS_HTTP2_FRAME_HEADER_LENGTH 9
#define LWS_HTTP2_SETTINGS_LENGTH 6
struct http2_settings {
unsigned int setting[LWS_HTTP2_SETTINGS__COUNT];
};
enum http2_hpack_state {
/* optional before first header block */
HPKS_OPT_PADDING,
HKPS_OPT_E_DEPENDENCY,
HKPS_OPT_WEIGHT,
/* header block */
HPKS_TYPE,
HPKS_IDX_EXT,
HPKS_HLEN,
HPKS_HLEN_EXT,
HPKS_DATA,
/* optional after last header block */
HKPS_OPT_DISCARD_PADDING,
};
enum http2_hpack_type {
HPKT_INDEXED_HDR_7,
HPKT_INDEXED_HDR_6_VALUE_INCR,
HPKT_LITERAL_HDR_VALUE_INCR,
HPKT_INDEXED_HDR_4_VALUE,
HPKT_LITERAL_HDR_VALUE,
HPKT_SIZE_5
};
struct hpack_dt_entry {
int token; /* additions that don't map to a token are ignored */
int arg_offset;
int arg_len;
};
struct hpack_dynamic_table {
struct hpack_dt_entry *entries;
char *args;
int pos;
int next;
int num_entries;
int args_length;
};
struct _lws_http2_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 http2_settings my_settings;
struct http2_settings peer_settings;
struct lws *parent_wsi;
struct lws *next_child_wsi;
struct hpack_dynamic_table *hpack_dyn_table;
struct lws *stream_wsi;
unsigned char ping_payload[8];
unsigned char one_setting[LWS_HTTP2_SETTINGS_LENGTH];
unsigned int count;
unsigned int length;
unsigned int stream_id;
enum http2_hpack_state hpack;
enum http2_hpack_type hpack_type;
unsigned int header_index;
unsigned int hpack_len;
unsigned int hpack_e_dep;
int tx_credit;
unsigned int my_stream_id;
unsigned int child_count;
int my_priority;
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 waiting_tx_credit:1;
unsigned int huff:1;
unsigned int value:1;
unsigned short round_robin_POLLOUT;
unsigned short count_POLLOUT_children;
unsigned short hpack_pos;
unsigned char type;
unsigned char flags;
unsigned char frame_state;
unsigned char padding;
unsigned char hpack_m;
unsigned char initialized;
};
#define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.http2.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;
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;
};
#ifdef LWS_WITH_CGI
/* 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 */
int pipe_fds[3][2];
int pid;
unsigned int being_closed:1;
};
#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
struct lws_rewrite;
struct lws {
/* structs */
/* members with mutually exclusive lifetimes are unionized */
union u {
struct _lws_http_mode_related http;
#ifdef LWS_USE_HTTP2
struct _lws_http2_related http2;
#endif
struct _lws_header_related hdr;
struct _lws_websocket_related ws;
} u;
/* lifetime members */
#if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
struct lws_io_watcher w_read;
#endif
#if defined(LWS_USE_LIBEV)
struct lws_io_watcher w_write;
#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 *timeout_list;
struct lws **timeout_list_prev;
void *user_space;
/* rxflow handling */
unsigned char *rxflow_buffer;
/* truncated send handling */
unsigned char *trunc_alloc; /* non-NULL means buffering in progress */
#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;
#if !defined(LWS_USE_POLARSSL) && !defined(LWS_USE_MBEDTLS)
BIO *client_bio;
#endif
struct lws *pending_read_list_prev, *pending_read_list_next;
#endif
#ifdef LWS_WITH_HTTP_PROXY
struct lws_rewrite *rw;
#endif
#ifdef LWS_LATENCY
unsigned long action_start;
unsigned long latency_start;
#endif
/* pointer / int */
lws_sockfd_type sock;
/* ints */
int position_in_fds_table;
int rxflow_len;
int 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 hdr_parsing_completed: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 */
#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;
#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:2;
unsigned int upgraded:1;
#endif
#ifdef _WIN32
unsigned int sock_send_blocking:1;
#endif
#ifdef LWS_OPENSSL_SUPPORT
unsigned int redirect_to_https:1;
#endif
/* chars */
#ifndef LWS_NO_EXTENSIONS
unsigned char count_act_ext;
#endif
unsigned char 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 pps; /* enum lws_pending_protocol_send */
char tsi; /* thread service index we belong to */
#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
};
LWS_EXTERN int log_level;
LWS_EXTERN int
lws_socket_bind(struct lws_context *context, int sockfd, int port,
const char *iface);
LWS_EXTERN void
lws_close_free_wsi(struct lws *wsi, enum lws_close_status);
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 void
lws_set_protocol_write_pending(struct lws *wsi,
enum lws_pending_protocol_send pend);
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_http_action(struct lws *wsi);
LWS_EXTERN int
lws_b64_selftest(void);
LWS_EXTERN int
lws_service_adjust_timeout(struct lws_context *context, int timeout_ms, int tsi);
LWS_EXTERN int
lws_service_flag_pending(struct lws_context *context, int tsi);
#if defined(_WIN32) || defined(MBED_OPERATORS)
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->sock] == 0); A->lws_lookup[B->sock]=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 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);
/*
* 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 void
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_USE_HTTP2
LWS_EXTERN struct lws *lws_http2_get_network_wsi(struct lws *wsi);
struct lws * lws_http2_get_nth_child(struct lws *wsi, int n);
LWS_EXTERN int
lws_http2_interpret_settings_payload(struct http2_settings *settings,
unsigned char *buf, int len);
LWS_EXTERN void lws_http2_init(struct http2_settings *settings);
LWS_EXTERN int
lws_http2_parser(struct lws *wsi, unsigned char c);
LWS_EXTERN int lws_http2_do_pps_send(struct lws_context *context,
struct lws *wsi);
LWS_EXTERN int lws_http2_frame_write(struct lws *wsi, int type, int flags,
unsigned int sid, unsigned int len,
unsigned char *buf);
LWS_EXTERN struct lws *
lws_http2_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
void lws_http2_configure_if_upgraded(struct lws *wsi);
#else
#define lws_http2_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_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);
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_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(MBED_OPERATORS)
LWS_EXTERN int LWS_WARN_UNUSED_RESULT
interface_to_sa(struct lws_context *context, 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)
#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);
#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_USE_HTTP2
LWS_EXTERN void
lws_context_init_http2_ssl(struct lws_context *context);
#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_lock(struct lws_context_per_thread *pt)
{
pthread_mutex_lock(&pt->lock);
}
static LWS_INLINE void
lws_pt_unlock(struct lws_context_per_thread *pt)
{
pthread_mutex_unlock(&pt->lock);
}
#else
#define lws_pt_mutex_init(_a) (void)(_a)
#define lws_pt_lock(_a) (void)(_a)
#define lws_pt_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);
#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);
LWS_EXTERN int
_lws_server_listen_accept_flow_control(struct lws *twsi, int on);
#else
#define lws_server_socket_service(_a, _b, _c) (0)
#define lws_handshake_server(_a, _b, _c) (0)
#define _lws_server_listen_accept_flow_control(a, b) (0)
#endif
LWS_EXTERN int
lws_get_addresses(struct lws_context *context, void *ads, char *name,
int name_len, char *rip, int rip_len);
LWS_EXTERN int
lws_cgi_kill_terminated(struct lws_context_per_thread *pt);
int
lws_protocol_init(struct lws_context *context);
/*
* custom allocator
*/
LWS_EXTERN void *
lws_realloc(void *ptr, size_t size);
LWS_EXTERN void * LWS_WARN_UNUSED_RESULT
lws_zalloc(size_t size);
#define lws_malloc(S) lws_realloc(NULL, S)
#define lws_free(P) lws_realloc(P, 0)
#define lws_free_set_NULL(P) do { lws_realloc(P, 0); (P) = NULL; } while(0)
/* 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 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_check_utf8(unsigned char *state, unsigned char *buf, size_t len);
#ifdef __cplusplus
};
#endif