X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fmeshlink_internal.h;h=b31c16eb1cc3b92fef8bd1373f9c07573a11e2d9;hb=HEAD;hp=710acdd794c40e1d67d30a5dcb0966c5ce1765df;hpb=196806f90f40fcc0cf727abd4bed6bc5aefff5ff;p=meshlink diff --git a/src/meshlink_internal.h b/src/meshlink_internal.h index 710acdd7..b57f212c 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" @@ -28,121 +32,170 @@ #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"; -struct CattaServer; -struct CattaSServiceBrowser; -struct CattaSimplePoll; -struct CattaSEntryGroup; +#define MESHLINK_CONFIG_VERSION 2 +#define MESHLINK_INVITATION_VERSION 2 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 *lock_filename; + char *appname; + char *name; + dev_class_t devclass; + + int netns; + + const void *key; + size_t keylen; + meshlink_storage_policy_t storage_policy; +}; + +/// 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; + struct connection_t *everyone; + uint64_t prng_state[4]; + uint32_t session_id; + + int next_pit; + int pits[10]; + + // 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; + meshlink_blacklisted_cb_t blacklisted_cb; + meshlink_thread_status_cb_t thread_status_cb; + + // Mesh parameters + char *appname; char *myport; - char *proxyhost; - char *proxyport; - char *proxyuser; - char *proxypass; - proxytype_t proxytype; + struct ecdsa *private_key; + struct ecdsa *invitation_key; + + dev_class_t devclass; + + int invitation_timeout; + int udp_choice; + + dev_class_traits_t dev_class_traits[DEV_CLASS_COUNT]; - bool localdiscovery; - sockaddr_t localdiscovery_address; + int netns; bool default_blacklist; + bool inviter_commits_first; - hash_t *node_udp_cache; - struct connection_t *everyone; - struct ecdsa *invitation_key; + // Configuration + char *confbase; + FILE *lockfile; + void *config_key; + char *external_address_url; + struct list_t *invitation_addresses; + meshlink_storage_policy_t storage_policy; - int pinginterval; /* seconds between pings */ - int pingtimeout; /* seconds to wait for response */ - int maxtimeout; + // Thread management + pthread_t thread; + pthread_cond_t cond; + bool threadstarted; - 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; - - pthread_t discovery_thread; - bool discovery_threadstarted; - struct CattaServer *catta_server; - struct CattaSServiceBrowser *catta_browser; - struct CattaSimplePoll *catta_poll; - struct CattaSEntryGroup *catta_group; - char* catta_servicetype; + // mDNS discovery + struct { + bool enabled; + io_t pfroute_io; + int *ifaces; + struct discovery_address *addresses; + int iface_count; + int address_count; + io_t sockets[2]; + time_t last_update; +#ifdef __APPLE__ + pthread_t thread; + void *runloop; +#endif + } discovery; + + // 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 +204,35 @@ 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; }; @@ -167,18 +243,22 @@ typedef struct meshlink_packethdr { uint8_t source[16]; } __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); +void channel_receive(meshlink_handle_t *mesh, meshlink_node_t *node, const void *data, size_t len); -/// 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