X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fmeshlink_internal.h;h=ca2df2c543cf055866d1bf0618617c5eabee920c;hb=e40d5bf3a0e030105334046319f377efbf3f06c4;hp=08f740719a769e17c4a664509254f539222a7f22;hpb=f09edd4a80eeb1f41060d596e48ef2303e05713f;p=meshlink diff --git a/src/meshlink_internal.h b/src/meshlink_internal.h index 08f74071..ca2df2c5 100644 --- a/src/meshlink_internal.h +++ b/src/meshlink_internal.h @@ -1,6 +1,9 @@ +#ifndef MESHLINK_INTERNAL_H +#define MESHLINK_INTERNAL_H + /* meshlink_internal.h -- Internal parts of the public API. - Copyright (C) 2014 Guus Sliepen + Copyright (C) 2014-2019 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,8 +20,9 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef MESHLINK_INTERNAL_H -#define MESHLINK_INTERNAL_H +#ifdef MESHLINK_H +#error You must not include both meshlink.h and meshlink_internal.h! +#endif #include "system.h" @@ -28,15 +32,19 @@ #include "meshlink_queue.h" #include "sockaddr.h" #include "sptps.h" +#include "xoshiro.h" #include -#define MAXSOCKETS 8 /* Probably overkill... */ +#define MAXSOCKETS 4 /* Probably overkill... */ static const char meshlink_invitation_label[] = "MeshLink invitation"; static const char meshlink_tcp_label[] = "MeshLink TCP"; static const char meshlink_udp_label[] = "MeshLink UDP"; +#define MESHLINK_CONFIG_VERSION 2 +#define MESHLINK_INVITATION_VERSION 2 + struct CattaServer; struct CattaSServiceBrowser; struct CattaSimplePoll; @@ -46,103 +54,145 @@ typedef struct listen_socket_t { struct io_t tcp; struct io_t udp; sockaddr_t sa; - bool bindto; + sockaddr_t broadcast_sa; } listen_socket_t; -typedef enum proxytype_t { - PROXY_NONE = 0, - PROXY_SOCKS4, - PROXY_SOCKS4A, - PROXY_SOCKS5, - PROXY_HTTP, - PROXY_EXEC, -} proxytype_t; +struct meshlink_open_params { + char *confbase; + char *appname; + char *name; + dev_class_t devclass; + + int netns; + + const void *key; + size_t keylen; +}; + +/// Device class traits +typedef struct { + int pinginterval; + int pingtimeout; + int fast_retry_period; + int maxtimeout; + unsigned int min_connects; + unsigned int max_connects; + int edge_weight; +} dev_class_traits_t; /// A handle for an instance of MeshLink. struct meshlink_handle { + // public members char *name; void *priv; - char *appname; - dev_class_t devclass; - - char *confbase; - - meshlink_receive_cb_t receive_cb; - meshlink_node_status_cb_t node_status_cb; + // private members + pthread_mutex_t mutex; + event_loop_t loop; + struct node_t *self; meshlink_log_cb_t log_cb; meshlink_log_level_t log_level; + void *packet; - meshlink_channel_accept_cb_t channel_accept_cb; - - pthread_t thread; - bool threadstarted; - pthread_mutex_t outpacketqueue_mutex; - pthread_mutex_t mesh_mutex; - event_loop_t loop; - listen_socket_t listen_socket[MAXSOCKETS]; + // The most important network-related members come first + int reachable; int listen_sockets; + listen_socket_t listen_socket[MAXSOCKETS]; + + meshlink_receive_cb_t receive_cb; + meshlink_queue_t outpacketqueue; signal_t datafromapp; - struct node_t *self; + hash_t *node_udp_cache; - struct splay_tree_t *config; - struct splay_tree_t *edges; struct splay_tree_t *nodes; + struct splay_tree_t *edges; struct list_t *connections; struct list_t *outgoings; + struct list_t *submeshes; - meshlink_queue_t outpacketqueue; - + // Meta-connection-related members struct splay_tree_t *past_request_tree; timeout_t past_request_timeout; + int connection_burst; int contradicting_add_edge; int contradicting_del_edge; int sleeptime; - time_t last_config_check; + time_t connection_burst_time; + time_t last_hard_try; + time_t last_unreachable; timeout_t pingtimer; timeout_t periodictimer; - char *myport; + struct connection_t *everyone; + uint64_t prng_state[4]; + uint32_t session_id; - char *proxyhost; - char *proxyport; - char *proxyuser; - char *proxypass; - proxytype_t proxytype; + int next_pit; + int pits[10]; - bool localdiscovery; - sockaddr_t localdiscovery_address; + // Infrequently used callbacks + meshlink_node_status_cb_t node_status_cb; + meshlink_node_status_cb_t meta_status_cb; + meshlink_node_pmtu_cb_t node_pmtu_cb; + meshlink_channel_listen_cb_t channel_listen_cb; + meshlink_channel_accept_cb_t channel_accept_cb; + meshlink_node_duplicate_cb_t node_duplicate_cb; + meshlink_connection_try_cb_t connection_try_cb; + meshlink_error_cb_t error_cb; - bool default_blacklist; + // Mesh parameters + char *appname; + char *myport; - hash_t *node_udp_cache; - struct connection_t *everyone; + struct ecdsa *private_key; struct ecdsa *invitation_key; - int pinginterval; /* seconds between pings */ - int pingtimeout; /* seconds to wait for response */ - int maxtimeout; + dev_class_t devclass; - int sock; - sptps_t sptps; - char cookie[18], hash[18]; - char *data; - size_t thedatalen; - bool success; - char line[4096]; - char buffer[4096]; - size_t blen; + int invitation_timeout; + int udp_choice; - pthread_t discovery_thread; + dev_class_traits_t dev_class_traits[DEV_CLASS_COUNT]; + + int netns; + + bool default_blacklist; + bool discovery; // Whether Catta is enabled or not + bool inviter_commits_first; + + // Configuration + char *confbase; + FILE *lockfile; + void *config_key; + char *external_address_url; + struct list_t *invitation_addresses; + + // Thread management + pthread_t thread; + pthread_cond_t cond; + pthread_mutex_t discovery_mutex; + pthread_cond_t discovery_cond; + bool threadstarted; bool discovery_threadstarted; + + // Catta + pthread_t discovery_thread; struct CattaServer *catta_server; struct CattaSServiceBrowser *catta_browser; struct CattaSimplePoll *catta_poll; struct CattaSEntryGroup *catta_group; - char* catta_servicetype; + char *catta_servicetype; + unsigned int catta_interfaces; + + // ADNS + pthread_t adns_thread; + pthread_cond_t adns_cond; + meshlink_queue_t adns_queue; + meshlink_queue_t adns_done_queue; + signal_t adns_signal; }; /// A handle for a MeshLink node. @@ -151,12 +201,35 @@ struct meshlink_node { void *priv; }; +/// A handle for a node Sub-Mesh. +struct meshlink_submesh { + const char *name; + void *priv; +}; + +/// An AIO buffer. +typedef struct meshlink_aio_buffer { + const void *data; + int fd; + size_t len; + size_t done; + union { + meshlink_aio_cb_t buffer; + meshlink_aio_fd_cb_t fd; + } cb; + void *priv; + struct meshlink_aio_buffer *next; +} meshlink_aio_buffer_t; + /// A channel. struct meshlink_channel { struct node_t *node; void *priv; + bool in_callback; struct utcp_connection *c; + meshlink_aio_buffer_t *aio_send; + meshlink_aio_buffer_t *aio_receive; meshlink_channel_receive_cb_t receive_cb; meshlink_channel_poll_cb_t poll_cb; }; @@ -165,20 +238,23 @@ struct meshlink_channel { typedef struct meshlink_packethdr { uint8_t destination[16]; uint8_t source[16]; -} __attribute__ ((__packed__)) meshlink_packethdr_t; +} __attribute__((__packed__)) meshlink_packethdr_t; -extern void meshlink_send_from_queue(event_loop_t* el,meshlink_handle_t *mesh); -extern void update_node_status(meshlink_handle_t *mesh, struct node_t *n); +void meshlink_send_from_queue(event_loop_t *loop, void *mesh); +void update_node_status(meshlink_handle_t *mesh, struct node_t *n); +void update_node_pmtu(meshlink_handle_t *mesh, struct node_t *n); extern meshlink_log_level_t global_log_level; extern meshlink_log_cb_t global_log_cb; +void handle_duplicate_node(meshlink_handle_t *mesh, struct node_t *n); +void handle_network_change(meshlink_handle_t *mesh, bool online); +void call_error_cb(meshlink_handle_t *mesh, meshlink_errno_t meshlink_errno); -/// Device class traits -typedef struct { - unsigned int min_connects; - unsigned int max_connects; - int edge_weight; -} dev_class_traits_t; +/// Per-instance PRNG +static inline int prng(meshlink_handle_t *mesh, uint64_t max) { + return xoshiro(mesh->prng_state) % max; +} -extern dev_class_traits_t dev_class_traits[]; +/// Fudge value of ~0.1 seconds, in microseconds. +static const unsigned int TIMER_FUDGE = 0x8000000; -#endif // MESHLINK_INTERNAL_H +#endif