diff options
Diffstat (limited to 'ctrl/libhicnctrl/src/api.c')
| -rw-r--r-- | ctrl/libhicnctrl/src/api.c | 3271 |
1 files changed, 223 insertions, 3048 deletions
diff --git a/ctrl/libhicnctrl/src/api.c b/ctrl/libhicnctrl/src/api.c index 8dcb978e0..c133b9123 100644 --- a/ctrl/libhicnctrl/src/api.c +++ b/ctrl/libhicnctrl/src/api.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017-2019 Cisco and/or its affiliates. + * Copyright (c) 2021-2022 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: @@ -18,3100 +18,275 @@ * \brief Implementation of hICN control library API */ -#include <assert.h> // assert -#include <math.h> // log2 -#include <stdbool.h> -#include <stdio.h> // snprintf -#include <string.h> // memmove, strcasecmp -#include <sys/socket.h> // socket -#include <unistd.h> // close, fcntl -#include <fcntl.h> // fcntl -#include <sys/types.h> // getpid -#include <unistd.h> // getpid -#ifdef __linux__ -#include <sys/syscall.h> -#define gettid() syscall(SYS_gettid) -#endif /* __linux__ */ - -#include <hicn/ctrl/api.h> -#include <hicn/ctrl/commands.h> -#include <hicn/util/token.h> +#include <assert.h> +#include <dlfcn.h> // dlopen +#include <hicn/strategy.h> #include <hicn/util/log.h> -#include <hicn/util/map.h> -#include <strings.h> - -#define PORT 9695 - -#define INT_CMP(x, y) ((x > y) ? 1 : (x < y) ? -1 : 0) -#define BOOLSTR(x) ((x) ? "true" : "false") -/* - * Internal state associated to a pending request - */ -typedef struct { - int seq; - hc_data_t * data; - /* Information used to process results */ - int size_in; - int (*parse)(const u8 * src, u8 * dst); -} hc_sock_request_t; - -/** - * Messages to the forwarder might be multiplexed thanks to the seqNum fields in - * the header_control_message structure. The forwarder simply answers back the - * original sequence number. We maintain a map of such sequence number to - * outgoing queries so that replied can be demultiplexed and treated - * appropriately. - */ -TYPEDEF_MAP_H(hc_sock_map, int, hc_sock_request_t *); -TYPEDEF_MAP(hc_sock_map, int, hc_sock_request_t *, int_cmp, int_snprintf, generic_snprintf); - -struct hc_sock_s { - char * url; - int fd; - - /* Partial receive buffer */ - u8 buf[RECV_BUFLEN]; - size_t roff; /**< Read offset */ - size_t woff; /**< Write offset */ - - /* - * Because received messages are potentially unbounded in size, we might not - * guarantee that we can store a full packet before processing it. We must - * implement a very simple state machine remembering the current parsing - * status in order to partially process the packet. - */ - size_t remaining; - u32 send_id; - - /* Next sequence number to be used for requests */ - int seq; - - /* Request being parsed (NULL if none) */ - hc_sock_request_t * cur_request; - - bool async; - hc_sock_map_t * map; -}; - - -hc_sock_request_t * -hc_sock_request_create(int seq, hc_data_t * data, HC_PARSE parse) -{ - assert(data); - - hc_sock_request_t * request = malloc(sizeof(hc_sock_request_t)); - if (!request) - return NULL; - request->seq = seq; - request->data = data; - request->parse = parse; - return request; -} +#include <hicn/ctrl/route.h> +#include <math.h> // log2 -void -hc_sock_request_free(hc_sock_request_t * request) -{ - free(request); -} +#include "api_private.h" +#include "object_vft.h" +#include "request.h" +#include <hicn/ctrl/socket.h> +#include "socket_private.h" -#if 0 -#ifdef __APPLE__ -#define RANDBYTE() (u8)(arc4random() & 0xFF) -#else -#define RANDBYTE() (u8)(random() & 0xFF) -#endif -#endif -#define RANDBYTE() (u8)(rand() & 0xFF) +#define ENOIMPL 42 -/* - * list was working with all seq set to 0, but it seems hicnLightControl uses - * 1, and replies with the same seqno - */ -#define HICN_CTRL_SEND_SEQ_INIT 1 -#define HICN_CTRL_RECV_SEQ_INIT 1 +int hc_sock_on_init(hc_sock_t *s, hc_request_t *request) { + int rc; + ssize_t size; -#define MAX(x, y) ((x > y) ? x : y) + uint8_t *buffer; -/** - * \brief Defines the default size for the allocated data arrays holding the - * results of API calls. - * - * This size should not be too small to avoid wasting memoyy, but also not too - * big to avoid unnecessary realloc's. Later on this size is doubled at each - * reallocation. - */ -#define DEFAULT_SIZE_LOG 3 + size = s->ops.prepare(s, request, &buffer); + if (size < 0) goto ERR_PREPARE; -/** - * In practise, we want to preserve enough room to store a full packet of - * average expected size (say a header + N payload elements). - */ -#define AVG_ELEMENTS (1 << DEFAULT_SIZE_LOG) -#define AVG_BUFLEN sizeof(hc_msg_header_t) + AVG_ELEMENTS * sizeof(hc_msg_payload_t) + if (size == 0) return 1; /* Done */ -/* - * We should at least have buffer space allowing to store one processable unit - * of data, either the header of the maximum possible payload - */ -#define MIN_BUFLEN MAX(sizeof(hc_msg_header_t), sizeof(hc_msg_payload_t)) - -static const struct in6_addr loopback_addr = IN6ADDR_LOOPBACK_INIT; + assert(hc_request_get_data(hc_request_get_current(request))); -/* /!\ Please update constants in header file upon changes */ -const char * connection_type_str[] = { -#define _(x) [CONNECTION_TYPE_ ## x] = STRINGIZE(x), -foreach_connection_type -#undef _ -}; + rc = s->ops.send(s, buffer, size); + if (rc < 0) goto ERR_SEND; -#define IS_VALID_CONNECTION_TYPE(x) IS_VALID_ENUM_TYPE(CONNECTION_TYPE, x) + return 0; -hc_connection_type_t -connection_type_from_str(const char * str) -{ - if (strcasecmp(str, "TCP") == 0) - return CONNECTION_TYPE_TCP; - else if (strcasecmp(str, "UDP") == 0) - return CONNECTION_TYPE_UDP; - else if (strcasecmp(str, "HICN") == 0) - return CONNECTION_TYPE_HICN; - else - return CONNECTION_TYPE_UNDEFINED; +ERR_PREPARE: +ERR_SEND: + return -1; } -/* Conversions to shield lib user from heterogeneity */ - -#define IS_VALID_LIST_CONNECTIONS_TYPE(x) ((x >= CONN_GRE) && (x <= CONN_HICN)) - -static const hc_connection_type_t map_from_list_connections_type[] = { - [CONN_GRE] = CONNECTION_TYPE_UNDEFINED, - [CONN_TCP] = CONNECTION_TYPE_TCP, - [CONN_UDP] = CONNECTION_TYPE_UDP, - [CONN_MULTICAST] = CONNECTION_TYPE_UNDEFINED, - [CONN_L2] = CONNECTION_TYPE_UNDEFINED, - [CONN_HICN] = CONNECTION_TYPE_HICN, -}; - -typedef enum { - ENCAP_TCP, - ENCAP_UDP, - ENCAP_ETHER, - ENCAP_LOCAL, - ENCAP_HICN -} EncapType; - -#define IS_VALID_LIST_LISTENERS_TYPE(x) ((x >= ENCAP_TCP) && (x <= ENCAP_HICN)) - -static const hc_connection_type_t map_from_encap_type[] = { - [ENCAP_TCP] = CONNECTION_TYPE_TCP, - [ENCAP_UDP] = CONNECTION_TYPE_UDP, - [ENCAP_ETHER] = CONNECTION_TYPE_UNDEFINED, - [ENCAP_LOCAL] = CONNECTION_TYPE_UNDEFINED, - [ENCAP_HICN] = CONNECTION_TYPE_HICN, -}; - -static const connection_type map_to_connection_type[] = { - [CONNECTION_TYPE_TCP] = TCP_CONN, - [CONNECTION_TYPE_UDP] = UDP_CONN, - [CONNECTION_TYPE_HICN] = HICN_CONN, -}; - -static const listener_mode map_to_listener_mode[] = { - [CONNECTION_TYPE_TCP] = IP_MODE, - [CONNECTION_TYPE_UDP] = IP_MODE, - [CONNECTION_TYPE_HICN] = HICN_MODE, -}; +int hc_sock_on_receive(hc_sock_t *s, size_t count) { + int rc; -#define IS_VALID_LIST_CONNECTIONS_STATE(x) ((x >= IFACE_UP) && (x <= IFACE_UNKNOWN)) - -/* /!\ Please update constants in header file upon changes */ -const char * connection_state_str[] = { -#define _(x) [HC_CONNECTION_STATE_ ## x] = STRINGIZE(x), -foreach_connection_state -#undef _ -}; - -/* -#define IS_VALID_CONNECTION_STATE(x) IS_VALID_ENUM_TYPE(CONNECTION_STATE, x) - -static const connection_state map_to_connection_state[] = { - [HC_CONNECTION_STATE_UP] = IFACE_UP, - [HC_CONNECTION_STATE_DOWN] = IFACE_DOWN, -}; - -*/ - -static const hc_connection_state_t map_from_list_connections_state[] = { - [IFACE_UP] = HC_CONNECTION_STATE_UP, - [IFACE_DOWN] = HC_CONNECTION_STATE_DOWN, - [IFACE_UNKNOWN] = HC_CONNECTION_STATE_UNDEFINED, -}; - - -#define connection_state_to_face_state(x) ((face_state_t)(x)) -#define face_state_to_connection_state(x) ((hc_connection_state_t)(x)) - -#define IS_VALID_ADDR_TYPE(x) ((x >= ADDR_INET) && (x <= ADDR_UNIX)) - -static const int map_from_addr_type[] = { - [ADDR_INET] = AF_INET, - [ADDR_INET6] = AF_INET6, - [ADDR_LINK] = AF_UNSPEC, - [ADDR_IFACE] = AF_UNSPEC, - [ADDR_UNIX] = AF_UNSPEC, -}; - -static const address_type map_to_addr_type[] = { - [AF_INET] = ADDR_INET, - [AF_INET6] = ADDR_INET6, -}; - -/****************************************************************************** - * Message helper types and aliases - ******************************************************************************/ - -#define foreach_hc_command \ - _(add_connection) \ - _(remove_connection) \ - _(list_connections) \ - _(add_listener) \ - _(remove_listener) \ - _(list_listeners) \ - _(add_route) \ - _(remove_route) \ - _(list_routes) \ - _(cache_store) \ - _(cache_serve) \ - /*_(cache_clear) */ \ - _(set_strategy) \ - _(set_wldr) \ - _(add_punting) \ - _(mapme_activator) \ - _(mapme_timing) - -typedef header_control_message hc_msg_header_t; - -typedef union { -#define _(x) x ## _command x; - foreach_hc_command -#undef _ -} hc_msg_payload_t; - - -typedef struct hc_msg_s { - hc_msg_header_t hdr; - hc_msg_payload_t payload; -} hc_msg_t; - -/****************************************************************************** - * Control Data - ******************************************************************************/ - -hc_data_t * -hc_data_create(size_t in_element_size, size_t out_element_size, data_callback_t complete_cb) -{ - hc_data_t * data = malloc(sizeof(hc_data_t)); - if (!data) - goto ERR_MALLOC; - - /* FIXME Could be NULL thanks to realloc provided size is 0 */ - data->max_size_log = DEFAULT_SIZE_LOG; - data->in_element_size = in_element_size; - data->out_element_size = out_element_size; - data->size = 0; - data->complete = false; - data->command_id = 0; // TODO this could also be a busy mark in the socket - /* No callback needed in blocking code for instance */ - data->complete_cb = complete_cb; - - data->buffer = malloc((1 << data->max_size_log) * data->out_element_size); - if (!data->buffer) - goto ERR_BUFFER; - data->ret = 0; - - return data; - -ERR_BUFFER: - hc_data_free(data); -ERR_MALLOC: - return NULL; -} - -void -hc_data_free(hc_data_t * data) -{ - if (data->buffer) - free(data->buffer); - free(data); -} - -int -hc_data_ensure_available(hc_data_t * data, size_t count) -{ - size_t new_size_log = (data->size + count - 1 > 0) - ? log2(data->size + count - 1) + 1 - : 0; - if (new_size_log > data->max_size_log) { - data->max_size_log = new_size_log; - data->buffer = realloc(data->buffer, (1 << new_size_log) * data->out_element_size); - if (!data->buffer) - return -1; - } - return 0; -} - -int -hc_data_push_many(hc_data_t * data, const void * elements, size_t count) -{ - if (hc_data_ensure_available(data, count) < 0) - return -1; - - memcpy(data->buffer + data->size * data->out_element_size, elements, - count * data->out_element_size); - data->size += count; - return 0; -} - -int -hc_data_push(hc_data_t * data, const void * element) -{ - return hc_data_push_many(data, element, 1); -} - -/** - * - * NOTE: This function make sure there is enough room available in the data - * structure. - */ -u8 * -hc_data_get_next(hc_data_t * data) -{ - if (hc_data_ensure_available(data, 1) < 0) - return NULL; - - return data->buffer + data->size * data->out_element_size; -} - -int -hc_data_set_callback(hc_data_t * data, data_callback_t cb, void * cb_data) -{ - data->complete_cb = cb; - data->complete_cb_data = cb_data; - return 0; -} - -int -hc_data_set_complete(hc_data_t * data) -{ - data->complete = true; - data->ret = 0; - if (data->complete_cb) - return data->complete_cb(data, data->complete_cb_data); - return 0; -} - -int -hc_data_set_error(hc_data_t * data) -{ - data->ret = -1; - return 0; -} - -int -hc_data_reset(hc_data_t * data) -{ - data->size = 0; - return 0; -} - -/****************************************************************************** - * Control socket - ******************************************************************************/ - -/** - * \brief Parse a connection URL into a sockaddr - * \param [in] url - URL - * \param [out] sa - Resulting struct sockaddr, expected zero'ed. - * \return 0 if parsing succeeded, a negative error value otherwise. - */ -int -hc_sock_parse_url(const char * url, struct sockaddr * sa) -{ - /* FIXME URL parsing is currently not implemented */ - assert(!url); - -#ifdef __linux__ - srand(time(NULL) ^ getpid() ^ gettid()); -#else - srand((unsigned int )(time(NULL) ^ getpid())); -#endif /* __linux__ */ - - /* - * A temporary solution is to inspect the sa_family fields of the passed in - * sockaddr, which defaults to AF_UNSPEC (0) and thus creates an IPv4/TCP - * connection to localhost. - */ - switch (sa->sa_family) { - case AF_UNSPEC: - case AF_INET: - { - struct sockaddr_in * sai = (struct sockaddr_in *)sa; - sai->sin_family = AF_INET; - sai->sin_port = htons(PORT); - sai->sin_addr.s_addr = htonl(INADDR_LOOPBACK); - break; - } - case AF_INET6: - { - struct sockaddr_in6 * sai6 = (struct sockaddr_in6 *)sa; - sai6->sin6_family = AF_INET6; - sai6->sin6_port = htons(PORT); - sai6->sin6_addr = loopback_addr; - break; - } - default: - return -1; - } - - return 0; -} - -hc_sock_t * -hc_sock_create_url(const char * url) -{ - hc_sock_t * s = malloc(sizeof(hc_sock_t)); - if (!s) - goto ERR_MALLOC; - - s->url = url ? strdup(url) : NULL; - - s->fd = socket(AF_INET, SOCK_STREAM, 0); - if (s->fd < 0) - goto ERR_SOCKET; - - if (hc_sock_reset(s) < 0) - goto ERR_RESET; - - s->seq = 0; - s->cur_request = NULL; - - s->map = hc_sock_map_create(); - if (!s->map) - goto ERR_MAP; - - return s; - - //hc_sock_map_free(s->map); -ERR_MAP: -ERR_RESET: - if (s->url) - free(s->url); - close(s->fd); -ERR_SOCKET: - free(s); -ERR_MALLOC: - return NULL; -} - -hc_sock_t * -hc_sock_create(void) -{ - return hc_sock_create_url(NULL); -} - -void -hc_sock_free(hc_sock_t * s) -{ - hc_sock_request_t ** request_array = NULL; - int n = hc_sock_map_get_value_array(s->map, &request_array); - if (n < 0) { - ERROR("Could not retrieve pending request array for freeing up resources"); - } else { - for (unsigned i = 0; i < n; i++) { - hc_sock_request_t * request = request_array[i]; - if (hc_sock_map_remove(s->map, request->seq, NULL) < 0) - ERROR("[hc_sock_process] Error removing request from map"); - hc_sock_request_free(request); - } - free(request_array); - } - - hc_sock_map_free(s->map); - if (s->url) - free(s->url); - close(s->fd); - free(s); -} - -int -hc_sock_get_next_seq(hc_sock_t * s) -{ - return s->seq++; -} - -int -hc_sock_set_nonblocking(hc_sock_t * s) -{ - return (fcntl(s->fd, F_SETFL, fcntl(s->fd, F_GETFL) | O_NONBLOCK) < 0); -} - -int -hc_sock_get_fd(hc_sock_t * s) -{ - return s->fd; -} - -int -hc_sock_connect(hc_sock_t * s) -{ - struct sockaddr_storage ss; - memset(&ss, 0, sizeof(struct sockaddr_storage)); - - if (hc_sock_parse_url(s->url, (struct sockaddr *)&ss) < 0) - goto ERR_PARSE; - - size_t size = ss.ss_family == AF_INET - ? sizeof(struct sockaddr_in) - : sizeof(struct sockaddr_in6); - if (connect(s->fd, (struct sockaddr *)&ss, (socklen_t)size) < 0) //sizeof(struct sockaddr)) < 0) - goto ERR_CONNECT; - - return 0; - -ERR_CONNECT: -ERR_PARSE: - return -1; -} - -int -hc_sock_send(hc_sock_t * s, hc_msg_t * msg, size_t msglen, int seq) -{ - int rc; - msg->hdr.seqNum = seq; - rc = (int)send(s->fd, msg, msglen, 0); - if (rc < 0) { - perror("hc_sock_send"); - return -1; - } - return 0; -} - -int -hc_sock_get_available(hc_sock_t * s, u8 ** buffer, size_t * size) -{ - *buffer = s->buf + s->woff; - *size = RECV_BUFLEN - s->woff; - - return 0; -} - -int -hc_sock_recv(hc_sock_t * s) -{ - int rc; + DEBUG("hc_sock_on_receive: calling process with count=%ld", count); + rc = s->ops.process(s, count); + if (rc < 0) goto ERR_PROCESS; + hc_request_t *request = hc_sock_get_request(s); + hc_request_t *current_request = hc_request_get_current(request); + hc_data_t *data = hc_request_get_data(current_request); + if (hc_data_is_complete(data)) { /* - * This condition should be ensured to guarantee correct processing of - * messages + * We only notice a request is complete when trying to send the second + * time... either the state machine reaches the end, or in case of generic + * requests, we mark it as such. */ - assert(RECV_BUFLEN - s->woff > MIN_BUFLEN); - - rc = (int)recv(s->fd, s->buf + s->woff, RECV_BUFLEN - s->woff, 0); - if (rc == 0) { - /* Connection has been closed */ - return 0; - } - if (rc < 0) { - /* - * Let's not return 0 which currently means the socket has been closed - */ - if (errno == EWOULDBLOCK) - return -1; - perror("hc_sock_recv"); - return -1; - } - s->woff += rc; - return rc; -} - -/* - * Returns -99 in case of internal error, -1 in case of API command failure - */ -int -hc_sock_process(hc_sock_t * s, hc_data_t ** data) -{ - int err = 0; - - /* We must have received at least one byte */ - size_t available = s->woff - s->roff; - - while(available > 0) { - - if (!s->cur_request) { // No message being parsed, alternatively (remaining == 0) - hc_msg_t * msg = (hc_msg_t*)(s->buf + s->roff); - - /* We expect a message header */ - if (available < sizeof(hc_msg_header_t)) { - break; - } - - hc_sock_request_t * request = NULL; - if (hc_sock_map_get(s->map, msg->hdr.seqNum, &request) < 0) { - ERROR("[hc_sock_process] Error searching for matching request"); - return -99; - } - if (!request) { - ERROR("[hc_sock_process] No request matching received sequence number"); - return -99; - } - - s->remaining = msg->hdr.length; - switch(msg->hdr.messageType) { - case ACK_LIGHT: - assert(s->remaining == 1); - assert(!data); - s->cur_request = request; - break; - case NACK_LIGHT: - assert(s->remaining == 1); - assert(!data); - hc_data_set_error(request->data); - s->cur_request = request; - err = -1; - break; - case RESPONSE_LIGHT: - assert(data); - if (s->remaining == 0) { - hc_data_set_complete(request->data); - *data = request->data; - if (hc_sock_map_remove(s->map, request->seq, NULL) < 0) - ERROR("[hc_sock_process] Error removing request from map"); - hc_sock_request_free(request); - } else { - /* We only remember it if there is still data to parse */ - s->cur_request = request; - } - break; - default: - ERROR("[hc_sock_process] Invalid response received"); - return -99; - } - - available -= sizeof(hc_msg_header_t); - s->roff += sizeof(hc_msg_header_t); - } else { - /* We expect the complete payload, or at least a chunk of it */ - size_t num_chunks = available / s->cur_request->data->in_element_size; - if (num_chunks == 0) - break; - if (num_chunks > s->remaining) - num_chunks = s->remaining; - - if (!s->cur_request->parse) { - /* If we don't need to parse results, then we can directly push - * all of them into the result data structure */ - hc_data_push_many(s->cur_request->data, s->buf + s->roff, num_chunks); - } else { - int rc; - rc = hc_data_ensure_available(s->cur_request->data, num_chunks); - if (rc < 0) { - ERROR("[hc_sock_process] Error in hc_data_ensure_available"); - return -99; - } - for (int i = 0; i < num_chunks; i++) { - u8 * dst = hc_data_get_next(s->cur_request->data); - if (!dst) { - ERROR("[hc_sock_process] Error in hc_data_get_next"); - return -99; - } - - rc = s->cur_request->parse(s->buf + s->roff + i * s->cur_request->data->in_element_size, dst); - if (rc < 0) { - ERROR("[hc_sock_process] Error in parse"); - err = -99; /* FIXME we let the loop complete (?) */ - } - s->cur_request->data->size++; - } - } - - s->remaining -= num_chunks; - available -= num_chunks * s->cur_request->data->in_element_size; - s->roff += num_chunks * s->cur_request->data->in_element_size; - if (s->remaining == 0) { - if (hc_sock_map_remove(s->map, s->cur_request->seq, NULL) < 0) { - ERROR("[hc_sock_process] Error removing request from map"); - return -99; - } - hc_data_set_complete(s->cur_request->data); - if (data) - *data = s->cur_request->data; - hc_sock_request_free(s->cur_request); - s->cur_request = NULL; - } - - } - } - - /* Make sure there is enough remaining space in the buffer */ - if (RECV_BUFLEN - s->woff < AVG_BUFLEN) { - /* - * There should be no overlap provided a sufficiently large BUFLEN, but - * who knows. - */ - memmove(s->buf, s->buf + s->roff, s->woff - s->roff); - s->woff -= s->roff; - s->roff = 0; - } - - return err; -} - -int -hc_sock_callback(hc_sock_t * s, hc_data_t ** pdata) -{ - hc_data_t * data; - - for (;;) { - int n = hc_sock_recv(s); - if (n == 0) - goto ERR_EOF; - if (n < 0) { - switch(errno) { - case ECONNRESET: - case ENODEV: - /* Forwarder restarted */ - WARN("Forwarder likely restarted: not (yet) implemented"); - goto ERR; - case EWOULDBLOCK: - //DEBUG("Would block... stop reading from socket"); - goto END; - default: - perror("hc_sock_recv"); - goto ERR; - } - } - if (hc_sock_process(s, &data) < 0) { - goto ERR; - } - } -END: - if (pdata) - *pdata = data; - else - hc_data_free(data); - return 0; - -ERR: - hc_data_free(data); -ERR_EOF: - return -1; -} - -int -hc_sock_reset(hc_sock_t * s) -{ - s->roff = s->woff = 0; - s->remaining = 0; - return 0; -} - -/****************************************************************************** - * Command-specific structures and functions - ******************************************************************************/ - -typedef int (*HC_PARSE)(const u8 *, u8 *); - -typedef struct { - hc_action_t cmd; - command_id cmd_id; - size_t size_in; - size_t size_out; - HC_PARSE parse; -} hc_command_params_t; - -int -hc_execute_command(hc_sock_t * s, hc_msg_t * msg, size_t msg_len, - hc_command_params_t * params, hc_data_t ** pdata, bool async) -{ - int ret; - if (async) - assert(!pdata); - - /* Sanity check */ - switch(params->cmd) { - case ACTION_CREATE: - assert(params->size_in != 0); /* payload repeated */ - assert(params->size_out == 0); - assert(params->parse == NULL); - break; - case ACTION_DELETE: - assert(params->size_in != 0); /* payload repeated */ - assert(params->size_out == 0); - assert(params->parse == NULL); - break; - case ACTION_LIST: - assert(params->size_in != 0); - assert(params->size_out != 0); - assert(params->parse != NULL); - break; - case ACTION_SET: - assert(params->size_in != 0); - assert(params->size_out == 0); - assert(params->parse == NULL); - break; - default: - return -1; + ON_INIT: + rc = hc_sock_on_init(s, request); + if (rc < 0) goto ERR_INIT; + if (rc == 1) { + if (!hc_request_pop(request)) { + /* Free request context */ + /* In case of error, data is NULL */ + // hc_sock_free_request(s, request); + if (!hc_request_is_subscription(request)) + hc_request_set_complete(request); + return 1; /* Done */ + } + goto ON_INIT; } - - //hc_sock_reset(s); - - /* XXX data will at least store the result (complete) */ - hc_data_t * data = hc_data_create(params->size_in, params->size_out, NULL); - if (!data) { - ERROR("[hc_execute_command] Could not create data storage"); - goto ERR_DATA; - } - - int seq = hc_sock_get_next_seq(s); - - /* Create state used to process the request */ - hc_sock_request_t * request = NULL; - request = hc_sock_request_create(seq, data, params->parse); - if (!request) { - ERROR("[hc_execute_command] Could not create request state"); - goto ERR_REQUEST; - } - - /* Add state to map */ - if (hc_sock_map_add(s->map, seq, request) < 0) { - ERROR("[hc_execute_command] Error adding request state to map"); - goto ERR_MAP; - } - - if (hc_sock_send(s, msg, msg_len, seq) < 0) { - ERROR("[hc_execute_command] Error sending message"); - goto ERR_PROCESS; - } - - if (async) - return 0; - - while(!data->complete) { - /* - * As the socket is non blocking it might happen that we need to read - * several times before success... shall we alternate between blocking - * and non-blocking mode ? - */ - int n = hc_sock_recv(s); - if (n == 0) - goto ERR_EOF; - if (n < 0) - continue; //break; - int rc = hc_sock_process(s, pdata); - switch(rc) { - case 0: - break; - case -1: - ret = rc; - break; - case -99: - ERROR("[hc_execute_command] Error processing socket results"); - goto ERR; - break; - default: - ERROR("[hc_execute_command] Unexpected return value"); - goto ERR; - } +#if 0 } +#endif + } + return 0; /* Continue processing */ -ERR_EOF: - ret = data->ret; - if (!data->complete) - return -1; - if (!pdata) - hc_data_free(data); - - return ret; - +ERR_INIT: ERR_PROCESS: -ERR_MAP: - hc_sock_request_free(request); -ERR: -ERR_REQUEST: - hc_data_free(data); -ERR_DATA: - return -99; -} - -/*----------------------------------------------------------------------------* - * Listeners - *----------------------------------------------------------------------------*/ - -/* LISTENER CREATE */ - -int -_hc_listener_create(hc_sock_t * s, hc_listener_t * listener, bool async) -{ - char listener_s[MAXSZ_HC_LISTENER]; - int rc = hc_listener_snprintf(listener_s, MAXSZ_HC_LISTENER, listener); - if (rc >= MAXSZ_HC_LISTENER) - WARN("[_hc_listener_create] Unexpected truncation of listener string"); - DEBUG("[_hc_listener_create] listener=%s async=%s", listener_s, - BOOLSTR(async)); - - if (!IS_VALID_FAMILY(listener->family)) - return -1; - - if (!IS_VALID_CONNECTION_TYPE(listener->type)) - return -1; - - struct { - header_control_message hdr; - add_listener_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = ADD_LISTENER, - .length = 1, - .seqNum = 0, - }, - .payload = { - .address = listener->local_addr, - .port = htons(listener->local_port), - .addressType = (u8)map_to_addr_type[listener->family], - .listenerMode = (u8)map_to_listener_mode[listener->type], - .connectionType = (u8)map_to_connection_type[listener->type], - } - }; - - rc = snprintf(msg.payload.symbolic, SYMBOLIC_NAME_LEN, "%s", listener->name); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_listener_create] Unexpected truncation of symbolic name string"); - - rc = snprintf(msg.payload.interfaceName, INTERFACE_LEN, "%s", listener->interface_name); - if (rc >= INTERFACE_LEN) - WARN("[_hc_listener_create] Unexpected truncation of interface name string"); - - hc_command_params_t params = { - .cmd = ACTION_CREATE, - .cmd_id = ADD_LISTENER, - .size_in = sizeof(add_listener_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_listener_create(hc_sock_t * s, hc_listener_t * listener) -{ - return _hc_listener_create(s, listener, false); -} - -int -hc_listener_create_async(hc_sock_t * s, hc_listener_t * listener) -{ - return _hc_listener_create(s, listener, true); -} - -/* LISTENER GET */ - -int -hc_listener_get(hc_sock_t * s, hc_listener_t * listener, - hc_listener_t ** listener_found) -{ - hc_data_t * listeners; - hc_listener_t * found; - - char listener_s[MAXSZ_HC_LISTENER]; - int rc = hc_listener_snprintf(listener_s, MAXSZ_HC_LISTENER, listener); - if (rc >= MAXSZ_HC_LISTENER) - WARN("[hc_listener_get] Unexpected truncation of listener string"); - DEBUG("[hc_listener_get] listener=%s", listener_s); - - if (hc_listener_list(s, &listeners) < 0) - return -1; - - /* Test */ - if (hc_listener_find(listeners, listener, &found) < 0) { - hc_data_free(listeners); - return -1; - } - - if (found) { - *listener_found = malloc(sizeof(hc_listener_t)); - if (!*listener_found) - return -1; - **listener_found = *found; - } else { - *listener_found = NULL; - } - - hc_data_free(listeners); - - return 0; -} - - -/* LISTENER DELETE */ - -int -_hc_listener_delete(hc_sock_t * s, hc_listener_t * listener, bool async) -{ - char listener_s[MAXSZ_HC_LISTENER]; - int rc = hc_listener_snprintf(listener_s, MAXSZ_HC_LISTENER, listener); - if (rc >= MAXSZ_HC_LISTENER) - WARN("[_hc_listener_delete] Unexpected truncation of listener string"); - DEBUG("[_hc_listener_delete] listener=%s async=%s", listener_s, - BOOLSTR(async)); - - struct { - header_control_message hdr; - remove_listener_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = REMOVE_LISTENER, - .length = 1, - .seqNum = 0, - }, - }; - - if (listener->id) { - rc = snprintf(msg.payload.symbolicOrListenerid, SYMBOLIC_NAME_LEN, "%d", listener->id); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_listener_delete] Unexpected truncation of symbolic name string"); - } else if (*listener->name) { - rc = snprintf(msg.payload.symbolicOrListenerid, SYMBOLIC_NAME_LEN, "%s", listener->name); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_listener_delete] Unexpected truncation of symbolic name string"); - } else { - hc_listener_t * listener_found; - if (hc_listener_get(s, listener, &listener_found) < 0) - return -1; - if (!listener_found) - return -1; - rc = snprintf(msg.payload.symbolicOrListenerid, SYMBOLIC_NAME_LEN, "%d", listener_found->id); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_listener_delete] Unexpected truncation of symbolic name string"); - free(listener_found); - } - - hc_command_params_t params = { - .cmd = ACTION_DELETE, - .cmd_id = REMOVE_LISTENER, - .size_in = sizeof(remove_listener_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_listener_delete(hc_sock_t * s, hc_listener_t * listener) -{ - return _hc_listener_delete(s, listener, false); -} - -int -hc_listener_delete_async(hc_sock_t * s, hc_listener_t * listener) -{ - return _hc_listener_delete(s, listener, true); -} - - -/* LISTENER LIST */ - -int -_hc_listener_list(hc_sock_t * s, hc_data_t ** pdata, bool async) -{ - DEBUG("[hc_listener_list] async=%s", BOOLSTR(async)); - - struct { - header_control_message hdr; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = LIST_LISTENERS, - .length = 0, - .seqNum = 0, - }, - }; - - hc_command_params_t params = { - .cmd = ACTION_LIST, - .cmd_id = LIST_LISTENERS, - .size_in = sizeof(list_listeners_command), - .size_out = sizeof(hc_listener_t), - .parse = (HC_PARSE)hc_listener_parse, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, pdata, async); -} - -int -hc_listener_list(hc_sock_t * s, hc_data_t ** pdata) -{ - return _hc_listener_list(s, pdata, false); -} - -int -hc_listener_list_async(hc_sock_t * s, hc_data_t ** pdata) -{ - return _hc_listener_list(s, pdata, true); -} - -/* LISTENER VALIDATE */ - -int -hc_listener_validate(const hc_listener_t * listener) -{ - if (!IS_VALID_FAMILY(listener->family)) - return -1; - - if (!IS_VALID_CONNECTION_TYPE(listener->type)) - return -1; - - return 0; -} - -/* LISTENER CMP */ - -int -hc_listener_cmp(const hc_listener_t * l1, const hc_listener_t * l2) -{ - int rc; - - rc = INT_CMP(l1->type, l2->type); - if (rc != 0) - return rc; - - rc = INT_CMP(l1->family, l2->family); - if (rc != 0) - return rc; - - rc = strncmp(l1->interface_name, l2->interface_name, INTERFACE_LEN); - if (rc != 0) - return rc; - - rc = ip_address_cmp(&l1->local_addr, &l2->local_addr, l1->family); - if (rc != 0) - return rc; - - rc = INT_CMP(l1->local_port, l2->local_port); - if (rc != 0) - return rc; - - return rc; -} - -/* LISTENER PARSE */ - -int -hc_listener_parse(void * in, hc_listener_t * listener) -{ - int rc; - - list_listeners_command * cmd = (list_listeners_command *)in; - - if (!IS_VALID_LIST_LISTENERS_TYPE(cmd->encapType)) - return -1; - - hc_connection_type_t type = map_from_encap_type[cmd->encapType]; - if (type == CONNECTION_TYPE_UNDEFINED) - return -1; - - if (!IS_VALID_ADDR_TYPE(cmd->addressType)) - return -1; - - int family = map_from_addr_type[cmd->addressType]; - if (!IS_VALID_FAMILY(family)) - return -1; - - *listener = (hc_listener_t) { - .id = cmd->connid, - .type = type, - .family = family, - .local_addr = UNION_CAST(cmd->address, ip_address_t), - .local_port = ntohs(cmd->port), - }; - rc = snprintf(listener->name, SYMBOLIC_NAME_LEN, "%s", cmd->listenerName); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[hc_listener_parse] Unexpected truncation of symbolic name string"); - rc = snprintf(listener->interface_name, INTERFACE_LEN, "%s", cmd->interfaceName); - if (rc >= INTERFACE_LEN) - WARN("[hc_listener_parse] Unexpected truncation of interface name string"); - return 0; -} - -GENERATE_FIND(listener) - -/* LISTENER SNPRINTF */ - -/* /!\ Please update constants in header file upon changes */ -int -hc_listener_snprintf(char * s, size_t size, hc_listener_t * listener) -{ - char local[MAXSZ_URL]; - int rc; - rc = url_snprintf(local, MAXSZ_URL, - listener->family, &listener->local_addr, listener->local_port); - if (rc >= MAXSZ_URL) - WARN("[hc_listener_snprintf] Unexpected truncation of URL string"); - if (rc < 0) - return rc; - - return snprintf(s, size, "%s %s %s", listener->interface_name, local, - connection_type_str[listener->type]); -} - -/*----------------------------------------------------------------------------* - * CONNECTION - *----------------------------------------------------------------------------*/ - -/* CONNECTION CREATE */ - -int -_hc_connection_create(hc_sock_t * s, hc_connection_t * connection, bool async) -{ - char connection_s[MAXSZ_HC_CONNECTION]; - int rc = hc_connection_snprintf(connection_s, MAXSZ_HC_CONNECTION, connection); - if (rc >= MAXSZ_HC_CONNECTION) - WARN("[_hc_connection_create] Unexpected truncation of connection string"); - DEBUG("[_hc_connection_create] connection=%s async=%s", connection_s, BOOLSTR(async)); - - if (hc_connection_validate(connection) < 0) - return -1; - - struct { - header_control_message hdr; - add_connection_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = ADD_CONNECTION, - .length = 1, - .seqNum = 0, - }, - .payload = { - .remoteIp = connection->remote_addr, - .localIp = connection->local_addr, - .remotePort = htons(connection->remote_port), - .localPort = htons(connection->local_port), - .ipType = (u8)map_to_addr_type[connection->family], - .connectionType = (u8)map_to_connection_type[connection->type], - .admin_state = connection->admin_state, -#ifdef WITH_POLICY - .priority = connection->priority, - .tags = connection->tags, -#endif /* WITH_POLICY */ - } - }; - rc = snprintf(msg.payload.symbolic, SYMBOLIC_NAME_LEN, "%s", connection->name); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_connection_create] Unexpected truncation of symbolic name string"); - //snprintf(msg.payload.interfaceName, INTERFACE_NAME_LEN, "%s", connection->interface_name); - - hc_command_params_t params = { - .cmd = ACTION_CREATE, - .cmd_id = ADD_CONNECTION, - .size_in = sizeof(add_connection_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_connection_create(hc_sock_t * s, hc_connection_t * connection) -{ - return _hc_connection_create(s, connection, false); -} - -int -hc_connection_create_async(hc_sock_t * s, hc_connection_t * connection) -{ - return _hc_connection_create(s, connection, true); -} - -/* CONNECTION GET */ - -int -hc_connection_get(hc_sock_t * s, hc_connection_t * connection, - hc_connection_t ** connection_found) -{ - hc_data_t * connections; - hc_connection_t * found; - - char connection_s[MAXSZ_HC_CONNECTION]; - int rc = hc_connection_snprintf(connection_s, MAXSZ_HC_CONNECTION, connection); - if (rc >= MAXSZ_HC_CONNECTION) - WARN("[hc_connection_get] Unexpected truncation of connection string"); - DEBUG("[hc_connection_get] connection=%s", connection_s); - - if (hc_connection_list(s, &connections) < 0) - return -1; - - /* Test */ - if (hc_connection_find(connections, connection, &found) < 0) { - hc_data_free(connections); - return -1; - } - - if (found) { - *connection_found = malloc(sizeof(hc_connection_t)); - if (!*connection_found) - return -1; - **connection_found = *found; - } else { - *connection_found = NULL; - } - - hc_data_free(connections); - - return 0; -} - - -/* CONNECTION DELETE */ - -int -_hc_connection_delete(hc_sock_t * s, hc_connection_t * connection, bool async) -{ - char connection_s[MAXSZ_HC_CONNECTION]; - int rc = hc_connection_snprintf(connection_s, MAXSZ_HC_CONNECTION, connection); - if (rc >= MAXSZ_HC_CONNECTION) - WARN("[_hc_connection_delete] Unexpected truncation of connection string"); - DEBUG("[_hc_connection_delete] connection=%s async=%s", connection_s, BOOLSTR(async)); - - struct { - header_control_message hdr; - remove_connection_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = REMOVE_CONNECTION, - .length = 1, - .seqNum = 0, - }, - }; - - if (connection->id) { - rc = snprintf(msg.payload.symbolicOrConnid, SYMBOLIC_NAME_LEN, "%d", connection->id); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_connection_delete] Unexpected truncation of symbolic name string"); - } else if (*connection->name) { - rc = snprintf(msg.payload.symbolicOrConnid, SYMBOLIC_NAME_LEN, "%s", connection->name); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_connection_delete] Unexpected truncation of symbolic name string"); + return -1; +} + +// -1 error +// 0 = request is not yet complete +// 1 request is complete +int hc_sock_receive(hc_sock_t *s, hc_data_t **pdata) { + int rc; + DEBUG("Waiting for data..."); + rc = s->ops.recv(s); + if (rc < 0) return -1; + + rc = hc_sock_on_receive(s, 0); + if (rc < 0) return -1; + + hc_request_t *request = hc_sock_get_request(s); + /* + * If notification, display it, ideally callback. What to do with + * allocated data ? + */ + // XXX problem we display object on ACK... but not subsequent + // notifications + // XXX we should rely on callback here in addition, even for a synchronous + // request + if (hc_request_is_subscription(request)) { + hc_data_t *data = hc_request_get_data(request); + assert(data); + hc_object_t *obj = (hc_object_t *)hc_data_get_buffer(data); + char buf[MAXSZ_HC_OBJECT]; + hc_object_type_t object_type = hc_data_get_object_type(data); + if (hc_object_snprintf(buf, sizeof(buf), object_type, obj) > 0) { + ; + INFO("%s %s", object_type_str(object_type), buf); + } + } + + // XXX need same for async + if (rc != 1) return 0; + + hc_request_t *current_request = hc_request_get_current(request); + if (hc_request_is_complete(current_request)) { + /* We either return the (last) allocated data, or free it */ + if (pdata) { + *pdata = hc_request_get_data(request); } else { - hc_connection_t * connection_found; - if (hc_connection_get(s, connection, &connection_found) < 0) - return -1; - if (!connection_found) - return -1; - rc = snprintf(msg.payload.symbolicOrConnid, SYMBOLIC_NAME_LEN, "%d", connection_found->id); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_connection_delete] Unexpected truncation of symbolic name string"); - free(connection_found); + hc_request_reset_data(request); } - - hc_command_params_t params = { - .cmd = ACTION_DELETE, - .cmd_id = REMOVE_CONNECTION, - .size_in = sizeof(remove_connection_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); + hc_request_on_complete(request); + // hc_sock_free_request(s, request); + } + return 1; } -int -hc_connection_delete(hc_sock_t * s, hc_connection_t * connection) -{ - return _hc_connection_delete(s, connection, false); -} +int hc_sock_receive_all(hc_sock_t *s, hc_data_t **pdata) { + for (;;) { + int rc = hc_sock_receive(s, pdata); + if (rc < 0) return -1; -int -hc_connection_delete_async(hc_sock_t * s, hc_connection_t * connection) -{ - return _hc_connection_delete(s, connection, true); + /* If request is complete, stop */ + if (rc == 1) break; + } + return 0; } -/* CONNECTION LIST */ - -int -_hc_connection_list(hc_sock_t * s, hc_data_t ** pdata, bool async) -{ - DEBUG("[hc_connection_list] async=%s", BOOLSTR(async)); - - struct { - header_control_message hdr; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = LIST_CONNECTIONS, - .length = 0, - .seqNum = 0, - }, - }; - - hc_command_params_t params = { - .cmd = ACTION_LIST, - .cmd_id = LIST_CONNECTIONS, - .size_in = sizeof(list_connections_command), - .size_out = sizeof(hc_connection_t), - .parse = (HC_PARSE)hc_connection_parse, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, pdata, async); -} - -int -hc_connection_list(hc_sock_t * s, hc_data_t ** pdata) -{ - return _hc_connection_list(s, pdata, false); -} - -int -hc_connection_list_async(hc_sock_t * s, hc_data_t ** pdata) -{ - return _hc_connection_list(s, pdata, true); -} - -/* CONNECTION VALIDATE */ - -int -hc_connection_validate(const hc_connection_t * connection) -{ - if (!IS_VALID_FAMILY(connection->family)) - return -1; - - if (!IS_VALID_CONNECTION_TYPE(connection->type)) - return -1; - - /* TODO assert both local and remote have the right family */ - - return 0; -} - -/* CONNECTION CMP */ - -/* - * hICN light uses ports even for hICN connections, but their value is ignored. - * As connections are specific to hicn-light, we can safely use IP and ports for - * comparison independently of the face type. +/** + * @return <0 in case of error + * -1 : validation error + * -2 : error during send + * -3 : error receiving or parsing + * + * If the caller provider a non-NULL hc_data_t pointer to receive results + * back, it is responsible for freeing it. */ -int hc_connection_cmp(const hc_connection_t * c1, const hc_connection_t * c2) -{ - int rc; - - rc = INT_CMP(c1->type, c2->type); - if (rc != 0) - return rc; - - rc = INT_CMP(c1->family, c2->family); - if (rc != 0) - return rc; - - rc = strncmp(c1->interface_name, c2->interface_name, INTERFACE_LEN); - if (rc != 0) - return rc; - - rc = ip_address_cmp(&c1->local_addr, &c2->local_addr, c1->family); - if (rc != 0) - return rc; - - rc = INT_CMP(c1->local_port, c2->local_port); - if (rc != 0) - return rc; - - rc = ip_address_cmp(&c1->remote_addr, &c2->remote_addr, c1->family); - if (rc != 0) - return rc; - - rc = INT_CMP(c1->remote_port, c2->remote_port); - if (rc != 0) - return rc; - - return rc; -} - -/* CONNECTION PARSE */ - -int -hc_connection_parse(void * in, hc_connection_t * connection) -{ - int rc; - list_connections_command * cmd = (list_connections_command *)in; - - if (!IS_VALID_LIST_CONNECTIONS_TYPE(cmd->connectionData.connectionType)) - return -1; - - hc_connection_type_t type = map_from_list_connections_type[cmd->connectionData.connectionType]; - if (type == CONNECTION_TYPE_UNDEFINED) - return -1; - - if (!IS_VALID_LIST_CONNECTIONS_STATE(cmd->state)) - return -1; - - hc_connection_state_t state = map_from_list_connections_state[cmd->state]; - if (state == HC_CONNECTION_STATE_UNDEFINED) - return -1; - - if (!IS_VALID_ADDR_TYPE(cmd->connectionData.ipType)) - return -1; - - int family = map_from_addr_type[cmd->connectionData.ipType]; - if (!IS_VALID_FAMILY(family)) - return -1; - - *connection = (hc_connection_t) { - .id = cmd->connid, - .type = type, - .family = family, - .local_addr = cmd->connectionData.localIp, - //.local_addr = UNION_CAST(cmd->connectionData.localIp, ip_address_t), - .local_port = ntohs(cmd->connectionData.localPort), - .remote_addr = cmd->connectionData.remoteIp, - //.remote_addr = UNION_CAST(cmd->connectionData.remoteIp, ip_address_t), - .remote_port = ntohs(cmd->connectionData.remotePort), - .admin_state = cmd->connectionData.admin_state, -#ifdef WITH_POLICY - .priority = cmd->connectionData.priority, - .tags = cmd->connectionData.tags, -#endif /* WITH_POLICY */ - .state = state, - }; - rc = snprintf(connection->name, SYMBOLIC_NAME_LEN, "%s", cmd->connectionData.symbolic); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[hc_connection_parse] Unexpected truncation of symbolic name string"); - rc = snprintf(connection->interface_name, INTERFACE_LEN, "%s", cmd->interfaceName); - if (rc >= INTERFACE_LEN) - WARN("[hc_connection_parse] Unexpected truncation of interface name string"); - return 0; -} - -GENERATE_FIND(connection) - -/* CONNECTION SNPRINTF */ - -/* /!\ Please update constants in header file upon changes */ -int -hc_connection_snprintf(char * s, size_t size, const hc_connection_t * connection) -{ - char local[MAXSZ_URL]; - char remote[MAXSZ_URL]; - int rc; - - // assert(connection->connection_state) - - rc = url_snprintf(local, MAXSZ_URL, connection->family, - &connection->local_addr, connection->local_port); - if (rc >= MAXSZ_URL) - WARN("[hc_connection_snprintf] Unexpected truncation of URL string"); - if (rc < 0) - return rc; - rc = url_snprintf(remote, MAXSZ_URL, connection->family, - &connection->remote_addr, connection->remote_port); - if (rc >= MAXSZ_URL) - WARN("[hc_connection_snprintf] Unexpected truncation of URL string"); - if (rc < 0) - return rc; - - return snprintf(s, size, "%s %s %s %s %s", - connection_state_str[connection->state], - connection->interface_name, - local, - remote, - connection_type_str[connection->type]); -} - -/* CONNECTION SET ADMIN STATE */ - -int -_hc_connection_set_admin_state(hc_sock_t * s, const char * conn_id_or_name, - face_state_t state, bool async) -{ - int rc; - DEBUG("[hc_connection_set_admin_state] connection_id/name=%s admin_state=%s async=%s", - conn_id_or_name, face_state_str[state], BOOLSTR(async)); - struct { - header_control_message hdr; - connection_set_admin_state_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = CONNECTION_SET_ADMIN_STATE, - .length = 1, - .seqNum = 0, - }, - .payload = { - .admin_state = state, - }, - }; - rc = snprintf(msg.payload.symbolicOrConnid, SYMBOLIC_NAME_LEN, "%s", conn_id_or_name); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_connection_set_admin_state] Unexpected truncation of symbolic name string"); - - hc_command_params_t params = { - .cmd = ACTION_SET, - .cmd_id = CONNECTION_SET_ADMIN_STATE, - .size_in = sizeof(connection_set_admin_state_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_connection_set_admin_state(hc_sock_t * s, const char * conn_id_or_name, - face_state_t state) -{ - return _hc_connection_set_admin_state(s, conn_id_or_name, state, false); -} - -int -hc_connection_set_admin_state_async(hc_sock_t * s, const char * conn_id_or_name, - face_state_t state) -{ - return _hc_connection_set_admin_state(s, conn_id_or_name, state, true); -} - -int -_hc_connection_set_priority(hc_sock_t * s, const char * conn_id_or_name, - uint32_t priority, bool async) -{ - int rc; - DEBUG("[hc_connection_set_priority] connection_id/name=%s priority=%d async=%s", - conn_id_or_name, priority, BOOLSTR(async)); - struct { - header_control_message hdr; - connection_set_priority_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = CONNECTION_SET_PRIORITY, - .length = 1, - .seqNum = 0, - }, - .payload = { - .priority = priority, - }, - }; - rc = snprintf(msg.payload.symbolicOrConnid, SYMBOLIC_NAME_LEN, "%s", conn_id_or_name); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_connection_set_priority] Unexpected truncation of symbolic name string"); - - hc_command_params_t params = { - .cmd = ACTION_SET, - .cmd_id = CONNECTION_SET_PRIORITY, - .size_in = sizeof(connection_set_priority_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_connection_set_priority(hc_sock_t * s, const char * conn_id_or_name, - uint32_t priority) -{ - return _hc_connection_set_priority(s, conn_id_or_name, priority, false); -} - -int -hc_connection_set_priority_async(hc_sock_t * s, const char * conn_id_or_name, - uint32_t priority) -{ - return _hc_connection_set_priority(s, conn_id_or_name, priority, true); -} - -int -_hc_connection_set_tags(hc_sock_t * s, const char * conn_id_or_name, - policy_tags_t tags, bool async) -{ - int rc; - DEBUG("[hc_connection_set_tags] connection_id/name=%s tags=%d async=%s", - conn_id_or_name, tags, BOOLSTR(async)); - struct { - header_control_message hdr; - connection_set_tags_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = CONNECTION_SET_TAGS, - .length = 1, - .seqNum = 0, - }, - .payload = { - .tags = tags, - }, - }; - rc = snprintf(msg.payload.symbolicOrConnid, SYMBOLIC_NAME_LEN, "%s", conn_id_or_name); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_connection_set_tags] Unexpected truncation of symbolic name string"); - - hc_command_params_t params = { - .cmd = ACTION_SET, - .cmd_id = CONNECTION_SET_TAGS, - .size_in = sizeof(connection_set_tags_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_connection_set_tags(hc_sock_t * s, const char * conn_id_or_name, - policy_tags_t tags) -{ - return _hc_connection_set_tags(s, conn_id_or_name, tags, false); -} - -int -hc_connection_set_tags_async(hc_sock_t * s, const char * conn_id_or_name, - policy_tags_t tags) -{ - return _hc_connection_set_tags(s, conn_id_or_name, tags, true); -} - -/*----------------------------------------------------------------------------* - * Routes - *----------------------------------------------------------------------------*/ - -/* ROUTE CREATE */ - -int -_hc_route_create(hc_sock_t * s, hc_route_t * route, bool async) -{ - char route_s[MAXSZ_HC_ROUTE]; - int rc = hc_route_snprintf(route_s, MAXSZ_HC_ROUTE, route); - if (rc >= MAXSZ_HC_ROUTE) - WARN("[_hc_route_create] Unexpected truncation of route string"); - if (rc < 0) - WARN("[_hc_route_create] Error building route string"); - else - DEBUG("[hc_route_create] route=%s async=%s", route_s, BOOLSTR(async)); - - if (!IS_VALID_FAMILY(route->family)) - return -1; - - struct { - header_control_message hdr; - add_route_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = ADD_ROUTE, - .length = 1, - .seqNum = 0, - }, - .payload = { - .address = route->remote_addr, - .cost = route->cost, - .addressType = (u8)map_to_addr_type[route->family], - .len = route->len, - } - }; - - /* - * The route commands expects the ID (or name that we don't use) as part of - * the symbolicOrConnid attribute. - */ - rc = snprintf(msg.payload.symbolicOrConnid, SYMBOLIC_NAME_LEN, "%d", route->face_id); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_route_create] Unexpected truncation of symbolic name string"); - - hc_command_params_t params = { - .cmd = ACTION_CREATE, - .cmd_id = ADD_ROUTE, - .size_in = sizeof(add_route_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_route_create(hc_sock_t * s, hc_route_t * route) -{ - return _hc_route_create(s, route, false); -} - -int -hc_route_create_async(hc_sock_t * s, hc_route_t * route) -{ - return _hc_route_create(s, route, true); -} - -/* ROUTE DELETE */ - -int -_hc_route_delete(hc_sock_t * s, hc_route_t * route, bool async) -{ - char route_s[MAXSZ_HC_ROUTE]; - int rc = hc_route_snprintf(route_s, MAXSZ_HC_ROUTE, route); - if (rc >= MAXSZ_HC_ROUTE) - WARN("[_hc_route_delete] Unexpected truncation of route string"); - DEBUG("[hc_route_delete] route=%s async=%s", route_s, BOOLSTR(async)); - - if (!IS_VALID_FAMILY(route->family)) - return -1; - - struct { - header_control_message hdr; - remove_route_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = REMOVE_ROUTE, - .length = 1, - .seqNum = 0, - }, - .payload = { - .address = route->remote_addr, - .addressType = (u8)map_to_addr_type[route->family], - .len = route->len, - } - }; - - /* - * The route commands expects the ID (or name that we don't use) as part of - * the symbolicOrConnid attribute. - */ - snprintf(msg.payload.symbolicOrConnid, SYMBOLIC_NAME_LEN, "%d", route->face_id); - - hc_command_params_t params = { - .cmd = ACTION_DELETE, - .cmd_id = REMOVE_ROUTE, - .size_in = sizeof(remove_route_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_route_delete(hc_sock_t * s, hc_route_t * route) -{ - return _hc_route_delete(s, route, false); -} - -int -hc_route_delete_async(hc_sock_t * s, hc_route_t * route) -{ - return _hc_route_delete(s, route, true); -} - -/* ROUTE LIST */ - -int -_hc_route_list(hc_sock_t * s, hc_data_t ** pdata, bool async) -{ - //DEBUG("[hc_route_list] async=%s", BOOLSTR(async)); - - struct { - header_control_message hdr; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = LIST_ROUTES, - .length = 0, - .seqNum = 0, - }, - }; - - hc_command_params_t params = { - .cmd = ACTION_LIST, - .cmd_id = LIST_ROUTES, - .size_in = sizeof(list_routes_command), - .size_out = sizeof(hc_route_t), - .parse = (HC_PARSE)hc_route_parse, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, pdata, async); +int _hc_execute(hc_sock_t *s, hc_action_t action, hc_object_type_t object_type, + hc_object_t *object, hc_result_callback_t callback, + void *callback_data, hc_data_t **pdata) { + assert(!(hc_sock_is_async(s) && pdata)); + + if (hc_sock_is_async(s) && !s->ops.get_fd) { + return -1; /* No async support */ + } + + // XXX no need to pass pdata to the request + // XXX sync socket, no multiplexed requests, no notifications + /* + * The request will contain all state needed to identify and demultiplex + * replies and notifications arriving on the socket. We assume there is at + * most a single request/reply in progress for a given request, and that + * requests involving multiple queries will run them sequentially. The use + * of a sequence number that is transported by the requests and reply is + * thus sufficient to disambiguate them. + */ + hc_request_t *request = hc_sock_create_request(s, action, object_type, object, + callback, callback_data); + if (!request) { + goto ERR_REQUEST; + } + + if (hc_request_requires_object(request)) { + if (hc_object_is_empty(object) || + hc_object_validate(object_type, object, true) < 0) { + goto ERR_VALIDATE; + } + } else { + if (object && !hc_object_is_empty(object)) { + goto ERR_CHECK; + } + } + + /* Workaround for non-fd based modules */ + if (s->ops.prepare && s->ops.send && s->ops.recv && s->ops.process) { + if (hc_sock_on_init(s, request) < 0) goto ERR_INIT; + + if (hc_sock_is_async(s)) return 0; + + if (hc_sock_receive_all(s, pdata) < 0) goto ERR_RECV; + } else if (s->ops.prepare) { + // hc_data_t *data = hc_data_create(OBJECT_TYPE_LISTENER); + // hc_data_push(data, NULL); + // No nested requests for now... + ssize_t size = s->ops.prepare(s, request, NULL); + _ASSERT(size == 0); /* Done */ + if (hc_request_is_complete(request)) { + if (pdata) { + *pdata = hc_request_get_data(request); + } else { + hc_request_reset_data(request); + } + hc_request_on_complete(request); + } + } + + return 0; + +ERR_RECV: + hc_request_reset_data(request); +ERR_INIT: + hc_sock_free_request(s, request, true); +ERR_CHECK: +ERR_REQUEST: +ERR_VALIDATE: + if (pdata) *pdata = NULL; + return -1; } -int -hc_route_list(hc_sock_t * s, hc_data_t ** pdata) -{ - return _hc_route_list(s, pdata, false); +int hc_execute(hc_sock_t *s, hc_action_t action, hc_object_type_t object_type, + hc_object_t *object, hc_data_t **pdata) { + return _hc_execute(s, action, object_type, object, NULL, NULL, pdata); } -int -hc_route_list_async(hc_sock_t * s) -{ - return _hc_route_list(s, NULL, true); -} - -/* ROUTE PARSE */ - -int -hc_route_parse(void * in, hc_route_t * route) -{ - list_routes_command * cmd = (list_routes_command *) in; - - if (!IS_VALID_ADDR_TYPE(cmd->addressType)) { - ERROR("[hc_route_parse] Invalid address type"); - return -1; - } - - int family = map_from_addr_type[cmd->addressType]; - if (!IS_VALID_FAMILY(family)) { - ERROR("[hc_route_parse] Invalid address family"); - return -1; - } - - *route = (hc_route_t) { - .face_id = cmd->connid, - .family = family, - .remote_addr = UNION_CAST(cmd->address, ip_address_t), - .len = cmd->len, - .cost = cmd->cost, - }; - return 0; -} - -/* ROUTE SNPRINTF */ - -/* /!\ Please update constants in header file upon changes */ -int -hc_route_snprintf(char * s, size_t size, hc_route_t * route) -{ - /* interface cost prefix length */ - - char prefix[MAXSZ_IP_ADDRESS]; - int rc; - - rc = ip_address_snprintf(prefix, MAXSZ_IP_ADDRESS, &route->remote_addr, - route->family); - if (rc >= MAXSZ_IP_ADDRESS) - ; - if (rc < 0) - return rc; - - return snprintf(s, size, "%*d %*d %s %*d", MAXSZ_FACE_ID, route->face_id, - MAXSZ_COST, route->cost, prefix, MAXSZ_LEN, route->len); +int hc_execute_async(hc_sock_t *s, hc_action_t action, + hc_object_type_t object_type, hc_object_t *object, + hc_result_callback_t callback, void *callback_data) { + return _hc_execute(s, action, object_type, object, callback, callback_data, + NULL); } /*----------------------------------------------------------------------------* - * Face - * - * Face support is not directly available in hicn-light, but we can offer such - * an interface through a combination of listeners and connections. The code - * starts with some conversion functions between faces/listeners/connections. - * - * We also need to make sure that there always exist a (single) listener when a - * connection is created, and in the hICN face case, that there is a single - * connection attached to this listener. - * + * VFT *----------------------------------------------------------------------------*/ -/* FACE -> LISTENER */ - -int -hc_face_to_listener(const hc_face_t * face, hc_listener_t * listener) -{ - const face_t * f = &face->face; - - switch(f->type) { - case FACE_TYPE_HICN_LISTENER: - break; - case FACE_TYPE_TCP_LISTENER: - break; - case FACE_TYPE_UDP_LISTENER: - break; - default: - return -1; - } - return -1; /* XXX Not implemented */ -} - -/* LISTENER -> FACE */ - -int -hc_listener_to_face(const hc_listener_t * listener, hc_face_t * face) -{ - return -1; /* XXX Not implemented */ -} - -/* FACE -> CONNECTION */ - -int -hc_face_to_connection(const hc_face_t * face, hc_connection_t * connection, bool generate_name) -{ - int rc; - const face_t * f = &face->face; - - switch(f->type) { - case FACE_TYPE_HICN: - *connection = (hc_connection_t) { - .type = CONNECTION_TYPE_HICN, - .family = f->family, - .local_addr = f->local_addr, - .local_port = 0, - .remote_addr = f->remote_addr, - .remote_port = 0, - .admin_state = face_state_to_connection_state(f->admin_state), - .state = face_state_to_connection_state(f->state), -#ifdef WITH_POLICY - .priority = f->priority, - .tags = f->tags, -#endif /* WITH_POLICY */ - }; - rc = snprintf(connection->name, SYMBOLIC_NAME_LEN, "%s", - f->netdevice.name); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[hc_face_to_connection] Unexpected truncation of symbolic name string"); - break; - case FACE_TYPE_TCP: - *connection = (hc_connection_t) { - .type = CONNECTION_TYPE_TCP, - .family = f->family, - .local_addr = f->local_addr, - .local_port = f->local_port, - .remote_addr = f->remote_addr, - .remote_port = f->remote_port, - .admin_state = face_state_to_connection_state(f->admin_state), - .state = face_state_to_connection_state(f->state), -#ifdef WITH_POLICY - .priority = f->priority, - .tags = f->tags, -#endif /* WITH_POLICY */ - }; - if (generate_name) { - rc = snprintf(connection->name, SYMBOLIC_NAME_LEN, "tcp%u", RANDBYTE()); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[hc_face_to_connection] Unexpected truncation of symbolic name string"); - } else { - memset(connection->name, 0, SYMBOLIC_NAME_LEN); - } - break; - case FACE_TYPE_UDP: - *connection = (hc_connection_t) { - .type = CONNECTION_TYPE_UDP, - .family = AF_INET, - .local_addr = f->local_addr, - .local_port = f->local_port, - .remote_addr = f->remote_addr, - .remote_port = f->remote_port, - .admin_state = face_state_to_connection_state(f->admin_state), - .state = face_state_to_connection_state(f->state), -#ifdef WITH_POLICY - .priority = f->priority, - .tags = f->tags, -#endif /* WITH_POLICY */ - }; - if (generate_name) { - rc = snprintf(connection->name, SYMBOLIC_NAME_LEN, "udp%u", RANDBYTE()); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[hc_face_to_connection] Unexpected truncation of symbolic name string"); - } else { - memset(connection->name, 0, SYMBOLIC_NAME_LEN); - } - snprintf(connection->interface_name, INTERFACE_LEN, "%s", - f->netdevice.name); - break; - default: - return -1; - } - - rc = snprintf(connection->interface_name, INTERFACE_LEN, "%s", - f->netdevice.name); - if (rc >= INTERFACE_LEN) - WARN("hc_face_to_connection] Unexpected truncation of interface name string"); - - return 0; -} - -/* CONNECTION -> FACE */ - -int -hc_connection_to_face(const hc_connection_t * connection, hc_face_t * face) -{ - int rc; - switch (connection->type) { - case CONNECTION_TYPE_TCP: - *face = (hc_face_t) { - .id = connection->id, - .face = { - .type = FACE_TYPE_TCP, - .family = connection->family, - .local_addr = connection->local_addr, - .local_port = connection->local_port, - .remote_addr = connection->remote_addr, - .remote_port = connection->remote_port, - .admin_state = connection_state_to_face_state(connection->admin_state), - .state = connection_state_to_face_state(connection->state), -#ifdef WITH_POLICY - .priority = connection->priority, - .tags = connection->tags, -#endif /* WITH_POLICY */ - }, - }; - break; - case CONNECTION_TYPE_UDP: - *face = (hc_face_t) { - .id = connection->id, - .face = { - .type = FACE_TYPE_UDP, - .family = connection->family, - .local_addr = connection->local_addr, - .local_port = connection->local_port, - .remote_addr = connection->remote_addr, - .remote_port = connection->remote_port, - .admin_state = connection_state_to_face_state(connection->admin_state), - .state = connection_state_to_face_state(connection->state), -#ifdef WITH_POLICY - .priority = connection->priority, - .tags = connection->tags, -#endif /* WITH_POLICY */ - }, - }; - break; - case CONNECTION_TYPE_HICN: - *face = (hc_face_t) { - .id = connection->id, - .face = { - .type = FACE_TYPE_HICN, - .family = connection->family, - .netdevice.index = NETDEVICE_UNDEFINED_INDEX, // XXX - .local_addr = connection->local_addr, - .remote_addr = connection->remote_addr, - .admin_state = connection_state_to_face_state(connection->admin_state), - .state = connection_state_to_face_state(connection->state), -#ifdef WITH_POLICY - .priority = connection->priority, - .tags = connection->tags, -#endif /* WITH_POLICY */ - }, - }; - break; - default: - return -1; - } - face->face.netdevice.name[0] = '\0'; - face->face.netdevice.index = 0; - rc = snprintf(face->name, SYMBOLIC_NAME_LEN, "%s", connection->name); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[hc_connection_to_face] Unexpected truncation of symbolic name string"); - rc = snprintf(face->face.netdevice.name, INTERFACE_LEN, "%s", connection->interface_name); - if (rc >= INTERFACE_LEN) - WARN("[hc_connection_to_face] Unexpected truncation of interface name string"); - netdevice_update_index(&face->face.netdevice); - return 0; -} - -/* CONNECTION -> LISTENER */ - -int -hc_connection_to_local_listener(const hc_connection_t * connection, hc_listener_t * listener) -{ - int rc; - *listener = (hc_listener_t) { - .id = ~0, - .type = connection->type, - .family = connection->family, - .local_addr = connection->local_addr, - .local_port = connection->local_port, - }; - rc = snprintf(listener->name, SYMBOLIC_NAME_LEN, "lst%u", RANDBYTE()); // generate name - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[hc_connection_to_local_listener] Unexpected truncation of symbolic name string"); - rc = snprintf(listener->interface_name, INTERFACE_LEN, "%s", connection->interface_name); - if (rc >= INTERFACE_LEN) - WARN("[hc_connection_to_local_listener] Unexpected truncation of interface name string"); - - return 0; -} - -/* FACE CREATE */ - -int -hc_face_create(hc_sock_t * s, hc_face_t * face) -{ - hc_listener_t listener; - hc_listener_t * listener_found; - - hc_connection_t connection; - hc_connection_t * connection_found; - - char face_s[MAXSZ_HC_FACE]; - int rc = hc_face_snprintf(face_s, MAXSZ_HC_FACE, face); - if (rc >= MAXSZ_HC_FACE) - WARN("[hc_face_create] Unexpected truncation of face string"); - DEBUG("[hc_face_create] face=%s", face_s); - - switch(face->face.type) - { - case FACE_TYPE_HICN: - case FACE_TYPE_TCP: - case FACE_TYPE_UDP: - if (hc_face_to_connection(face, &connection, true) < 0) { - ERROR("[hc_face_create] Could not convert face to connection."); - return -1; - } - - /* Ensure we have a corresponding local listener */ - if (hc_connection_to_local_listener(&connection, &listener) < 0) { - ERROR("[hc_face_create] Could not convert face to local listener."); - return -1; - } - - if (hc_listener_get(s, &listener, &listener_found) < 0) { - ERROR("[hc_face_create] Could not retrieve listener"); - return -1; - } - - if (!listener_found) { - /* We need to create the listener if it does not exist */ - if (hc_listener_create(s, &listener) < 0) { - ERROR("[hc_face_create] Could not create listener."); - free(listener_found); - return -1; - } - } else { - free(listener_found); - } - - /* Create corresponding connection */ - if (hc_connection_create(s, &connection) < 0) { - ERROR("[hc_face_create] Could not create connection."); - return -1; - } - - /* - * Once the connection is created, we need to list all connections - * and compare with the current one to find the created face ID. - */ - if (hc_connection_get(s, &connection, &connection_found) < 0) { - ERROR("[hc_face_create] Could not retrieve connection"); - return -1; - } - - if (!connection_found) { - ERROR("[hc_face_create] Could not find newly created connection."); - return -1; - } - - face->id = connection_found->id; - free(connection_found); - - break; - - case FACE_TYPE_HICN_LISTENER: - case FACE_TYPE_TCP_LISTENER: - case FACE_TYPE_UDP_LISTENER: - if (hc_face_to_listener(face, &listener) < 0) { - ERROR("Could not convert face to listener."); - return -1; - } - if (hc_listener_create(s, &listener) < 0) { - ERROR("[hc_face_create] Could not create listener."); - return -1; - } - return -1; - break; - default: - ERROR("[hc_face_create] Unknwon face type."); - - return -1; - }; - - return 0; +int hc_object_create(hc_sock_t *s, hc_object_type_t object_type, + hc_object_t *object) { + return hc_execute(s, ACTION_CREATE, object_type, object, NULL); } -int -hc_face_get(hc_sock_t * s, hc_face_t * face, hc_face_t ** face_found) -{ - hc_listener_t listener; - hc_listener_t * listener_found; - - hc_connection_t connection; - hc_connection_t * connection_found; - - char face_s[MAXSZ_HC_FACE]; - int rc = hc_face_snprintf(face_s, MAXSZ_HC_FACE, face); - if (rc >= MAXSZ_HC_FACE) - WARN("[hc_face_get] Unexpected truncation of face string"); - DEBUG("[hc_face_get] face=%s", face_s); - - switch(face->face.type) - { - case FACE_TYPE_HICN: - case FACE_TYPE_TCP: - case FACE_TYPE_UDP: - if (hc_face_to_connection(face, &connection, false) < 0) - return -1; - if (hc_connection_get(s, &connection, &connection_found) < 0) - return -1; - if (!connection_found) { - *face_found = NULL; - return 0; - } - *face_found = malloc(sizeof(hc_face_t)); - hc_connection_to_face(connection_found, *face_found); - free(connection_found); - break; - - case FACE_TYPE_HICN_LISTENER: - case FACE_TYPE_TCP_LISTENER: - case FACE_TYPE_UDP_LISTENER: - if (hc_face_to_listener(face, &listener) < 0) - return -1; - if (hc_listener_get(s, &listener, &listener_found) < 0) - return -1; - if (!listener_found) { - *face_found = NULL; - return 0; - } - *face_found = malloc(sizeof(hc_face_t)); - hc_listener_to_face(listener_found, *face_found); - free(listener_found); - break; - - default: - return -1; - } - - return 0; - +int hc_object_get(hc_sock_t *s, hc_object_type_t object_type, + hc_object_t *object, hc_object_t **found) { + return hc_execute(s, ACTION_GET, object_type, object, NULL); } -/* FACE DELETE */ - -int -hc_face_delete(hc_sock_t * s, hc_face_t * face) -{ - char face_s[MAXSZ_HC_FACE]; - int rc = hc_face_snprintf(face_s, MAXSZ_HC_FACE, face); - if (rc >= MAXSZ_HC_FACE) - WARN("[hc_face_delete] Unexpected truncation of face string"); - DEBUG("[hc_face_delete] face=%s", face_s); - - hc_connection_t connection; - if (hc_face_to_connection(face, &connection, false) < 0) { - ERROR("[hc_face_delete] Could not convert face to connection."); - return -1; - } - - if (hc_connection_delete(s, &connection) < 0) { - ERROR("[hc_face_delete] Error removing connection"); - return -1; - } - - /* If this is the last connection attached to the listener, remove it */ - - hc_data_t * connections; - hc_listener_t listener = {{0}}; - - /* - * Ensure we have a corresponding local listener - * NOTE: hc_face_to_listener is not appropriate - */ - if (hc_connection_to_local_listener(&connection, &listener) < 0) { - ERROR("[hc_face_create] Could not convert face to local listener."); - return -1; +int hc_object_find(hc_sock_t *s, hc_object_type_t object_type, hc_data_t *data, + const hc_object_t *element, hc_object_t **found) { +// XXX NOT IMPLEMENTED +#if 0 + foreach_type(hc_object_t, x, data) { + if (hc_object_cmp(x, element) == 0) { + *found = x; + return 0; } -#if 1 - /* - * The name is generated to prepare listener creation, we need it to be - * empty for deletion. The id should not need to be reset though. - */ - listener.id = 0; - memset(listener.name, 0, sizeof(listener.name)); + }; #endif - if (hc_connection_list(s, &connections) < 0) { - ERROR("[hc_face_delete] Error getting the list of listeners"); - return -1; - } - - bool delete = true; - foreach_connection(c, connections) { - if ((ip_address_cmp(&c->local_addr, &listener.local_addr, c->family) == 0) && - (c->local_port == listener.local_port) && - (strcmp(c->interface_name, listener.interface_name) == 0)) { - delete = false; - } - } - - if (delete) { - if (hc_listener_delete(s, &listener) < 0) { - ERROR("[hc_face_delete] Error removing listener"); - return -1; - } - } - - hc_data_free(connections); - - return 0; - - -} - -/* FACE LIST */ - -int -hc_face_list(hc_sock_t * s, hc_data_t ** pdata) -{ - hc_data_t * connection_data; - hc_face_t face; - - //DEBUG("[hc_face_list]"); - - if (hc_connection_list(s, &connection_data) < 0) { - ERROR("[hc_face_list] Could not list connections."); - return -1; - } - - hc_data_t * face_data = hc_data_create(sizeof(hc_connection_t), sizeof(hc_face_t), NULL); - foreach_connection(c, connection_data) { - if (hc_connection_to_face(c, &face) < 0) { - ERROR("[hc_face_list] Could not convert connection to face."); - goto ERR; - } - hc_data_push(face_data, &face); - } - - *pdata = face_data; - hc_data_free(connection_data); - return 0; - -ERR: - hc_data_free(connection_data); - return -1; -} - -int -hc_connection_parse_to_face(void * in, hc_face_t * face) -{ - hc_connection_t connection; - - if (hc_connection_parse(in, &connection) < 0) { - ERROR("[hc_connection_parse_to_face] Could not parse connection"); - return -1; - } - - if (hc_connection_to_face(&connection, face) < 0) { - ERROR("[hc_connection_parse_to_face] Could not convert connection to face."); - return -1; - } - - return 0; -} - - -int -hc_face_list_async(hc_sock_t * s) -{ - struct { - header_control_message hdr; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = LIST_CONNECTIONS, - .length = 0, - .seqNum = 0, - }, - }; - - hc_command_params_t params = { - .cmd = ACTION_LIST, - .cmd_id = LIST_CONNECTIONS, - .size_in = sizeof(list_connections_command), - .size_out = sizeof(hc_face_t), - .parse = (HC_PARSE)hc_connection_parse_to_face, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, true); -} - -/* /!\ Please update constants in header file upon changes */ -int -hc_face_snprintf(char * s, size_t size, hc_face_t * face) -{ - /* URLs are also big enough to contain IP addresses in the hICN case */ - char local[MAXSZ_URL]; - char remote[MAXSZ_URL]; -#ifdef WITH_POLICY - char tags[MAXSZ_POLICY_TAGS]; -#endif /* WITH_POLICY */ - int rc; - - switch(face->face.type) { - case FACE_TYPE_HICN: - case FACE_TYPE_HICN_LISTENER: - rc = ip_address_snprintf(local, MAXSZ_URL, - &face->face.local_addr, - face->face.family); - if (rc >= MAXSZ_URL) - WARN("[hc_face_snprintf] Unexpected truncation of URL string"); - if (rc < 0) - return rc; - rc = ip_address_snprintf(remote, MAXSZ_URL, - &face->face.remote_addr, - face->face.family); - if (rc >= MAXSZ_URL) - WARN("[hc_face_snprintf] Unexpected truncation of URL string"); - if (rc < 0) - return rc; - break; - case FACE_TYPE_TCP: - case FACE_TYPE_UDP: - case FACE_TYPE_TCP_LISTENER: - case FACE_TYPE_UDP_LISTENER: - rc = url_snprintf(local, MAXSZ_URL, face->face.family, - &face->face.local_addr, - face->face.local_port); - if (rc >= MAXSZ_URL) - WARN("[hc_face_snprintf] Unexpected truncation of URL string"); - if (rc < 0) - return rc; - rc = url_snprintf(remote, MAXSZ_URL, face->face.family, - &face->face.remote_addr, - face->face.remote_port); - if (rc >= MAXSZ_URL) - WARN("[hc_face_snprintf] Unexpected truncation of URL string"); - if (rc < 0) - return rc; - break; - default: - return -1; - } - - // [#ID NAME] TYPE LOCAL_URL REMOTE_URL STATE/ADMIN_STATE (TAGS) -#ifdef WITH_POLICY - rc = policy_tags_snprintf(tags, MAXSZ_POLICY_TAGS, face->face.tags); - if (rc >= MAXSZ_POLICY_TAGS) - WARN("[hc_face_snprintf] Unexpected truncation of policy tags string"); - if (rc < 0) - return rc; - - return snprintf(s, size, "[#%d %s] %s %s %s %s %s/%s [%d] (%s)", - face->id, - face->name, - face->face.netdevice.index != NETDEVICE_UNDEFINED_INDEX ? face->face.netdevice.name : "*", - face_type_str[face->face.type], - local, - remote, - face_state_str[face->face.state], - face_state_str[face->face.admin_state], - face->face.priority, - tags); -#else - return snprintf(s, size, "[#%d %s] %s %s %s %s %s/%s", - face->id, - face->name, - face->face.netdevice.index != NETDEVICE_UNDEFINED_INDEX ? face->face.netdevice.name : "*", - face_type_str[face->face.type], - local, - remote, - face_state_str[face->face.state], - face_state_str[face->face.admin_state]); -#endif /* WITH_POLICY */ -} - -int -hc_face_set_admin_state(hc_sock_t * s, const char * conn_id_or_name, - face_state_t admin_state) -{ - return hc_connection_set_admin_state(s, conn_id_or_name, admin_state); -} - -int -hc_face_set_priority(hc_sock_t * s, const char * conn_id_or_name, - uint32_t priority) -{ - return hc_connection_set_priority(s, conn_id_or_name, priority); -} - -int -hc_face_set_tags(hc_sock_t * s, const char * conn_id_or_name, - policy_tags_t tags) -{ - return hc_connection_set_tags(s, conn_id_or_name, tags); -} - -/*----------------------------------------------------------------------------* - * Punting - *----------------------------------------------------------------------------*/ - -int -_hc_punting_create(hc_sock_t * s, hc_punting_t * punting, bool async) -{ - int rc; - - if (hc_punting_validate(punting) < 0) - return -1; - - struct { - header_control_message hdr; - add_punting_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = ADD_PUNTING, - .length = 1, - .seqNum = 0, - }, - .payload = { - .address = punting->prefix, - .addressType = (u8)map_to_addr_type[punting->family], - .len = punting->prefix_len, - } - }; - rc = snprintf(msg.payload.symbolicOrConnid, SYMBOLIC_NAME_LEN, "%d", punting->face_id); - if (rc >= SYMBOLIC_NAME_LEN) - WARN("[_hc_punting_create] Unexpected truncation of symbolic name string"); - - hc_command_params_t params = { - .cmd = ACTION_CREATE, - .cmd_id = ADD_PUNTING, - .size_in = sizeof(add_punting_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_punting_create(hc_sock_t * s, hc_punting_t * punting) -{ - return _hc_punting_create(s, punting, false); -} - -int -hc_punting_create_async(hc_sock_t * s, hc_punting_t * punting) -{ - return _hc_punting_create(s, punting, true); -} - -int hc_punting_get(hc_sock_t * s, hc_punting_t * punting, hc_punting_t ** punting_found) -{ - ERROR("hc_punting_get not (yet) implemented."); - return -1; -} - -int hc_punting_delete(hc_sock_t * s, hc_punting_t * punting) -{ - ERROR("hc_punting_delete not (yet) implemented."); - return -1; -} - -int hc_punting_list(hc_sock_t * s, hc_data_t ** pdata) -{ - ERROR("hc_punting_list not (yet) implemented."); - return -1; -} - -int hc_punting_validate(const hc_punting_t * punting) -{ - if (!IS_VALID_FAMILY(punting->family)) - return -1; - - /* - * We might use the zero value to add punting on all faces but this is not - * (yet) implemented - */ - if (punting->face_id == 0) { - ERROR("Punting on all faces is not (yet) implemented."); - return -1; - } - - return 0; -} - -int hc_punting_cmp(const hc_punting_t * p1, const hc_punting_t * p2) -{ - int rc; - - rc = INT_CMP(p1->face_id, p2->face_id); - if (rc != 0) - return rc; - - rc = INT_CMP(p1->family, p2->family); - if (rc != 0) - return rc; - - rc = ip_address_cmp(&p1->prefix, &p2->prefix, p1->family); - if (rc != 0) - return rc; - - rc = INT_CMP(p1->prefix_len, p2->prefix_len); - if (rc != 0) - return rc; - - return rc; -} - -int hc_punting_parse(void * in, hc_punting_t * punting) -{ - ERROR("hc_punting_parse not (yet) implemented."); - return -1; -} - -int hc_punting_snprintf(char * s, size_t size, hc_punting_t * punting) -{ - ERROR("hc_punting_snprintf not (yet) implemented."); - return -1; -} - - -/*----------------------------------------------------------------------------* - * Cache - *----------------------------------------------------------------------------*/ - -int -_hc_cache_set_store(hc_sock_t * s, int enabled, bool async) -{ - struct { - header_control_message hdr; - cache_store_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = CACHE_STORE, - .length = 1, - .seqNum = 0, - }, - .payload = { - .activate = enabled, - } - }; - - hc_command_params_t params = { - .cmd = ACTION_SET, - .cmd_id = CACHE_STORE, - .size_in = sizeof(cache_store_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); + *found = NULL; /* this is optional */ + return 0; } -int -hc_cache_set_store(hc_sock_t * s, int enabled) -{ - return _hc_cache_set_store(s, enabled, false); +int hc_object_delete(hc_sock_t *s, hc_object_type_t object_type, + hc_object_t *object) { + return hc_execute(s, ACTION_DELETE, object_type, object, NULL); } -int -hc_cache_set_store_async(hc_sock_t * s, int enabled) -{ - return _hc_cache_set_store(s, enabled, true); +int hc_object_list(hc_sock_t *s, hc_object_type_t object_type, + hc_data_t **pdata) { + return hc_execute(s, ACTION_LIST, object_type, NULL, pdata); } - -int -_hc_cache_set_serve(hc_sock_t * s, int enabled, bool async) -{ - struct { - header_control_message hdr; - cache_serve_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = CACHE_SERVE, - .length = 1, - .seqNum = 0, - }, - .payload = { - .activate = enabled, - } - }; - - hc_command_params_t params = { - .cmd = ACTION_SET, - .cmd_id = CACHE_SERVE, - .size_in = sizeof(cache_serve_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_cache_set_serve(hc_sock_t * s, int enabled) -{ - return _hc_cache_set_serve(s, enabled, false); -} - -int -hc_cache_set_serve_async(hc_sock_t * s, int enabled) -{ - return _hc_cache_set_serve(s, enabled, true); -} - -/*----------------------------------------------------------------------------* - * Strategy - *----------------------------------------------------------------------------*/ - -// per prefix -int -hc_strategy_set(hc_sock_t * s /* XXX */) -{ - return 0; -} - -/* How to retrieve that from the forwarder ? */ -static const char * strategies[] = { - "random", - "load_balancer", -}; - -#define ARRAY_SIZE(array) (sizeof(array) / sizeof(*array)) - -int -hc_strategy_list(hc_sock_t * s, hc_data_t ** data) -{ - int rc; - - *data = hc_data_create(0, sizeof(hc_strategy_t), NULL); - - for (unsigned i = 0; i < ARRAY_SIZE(strategies); i++) { - hc_strategy_t * strategy = (hc_strategy_t*)hc_data_get_next(*data); - if (!strategy) - return -1; - rc = snprintf(strategy->name, MAXSZ_HC_STRATEGY, "%s", strategies[i]); - if (rc >= MAXSZ_HC_STRATEGY) - WARN("[hc_strategy_list] Unexpected truncation of strategy name string"); - (*data)->size++; - } - - return 0; -} - -/* /!\ Please update constants in header file upon changes */ -int -hc_strategy_snprintf(char * s, size_t size, hc_strategy_t * strategy) -{ - return snprintf(s, size, "%s", strategy->name); -} - -/*----------------------------------------------------------------------------* - * WLDR - *----------------------------------------------------------------------------*/ - -// per connection -int -hc_wldr_set(hc_sock_t * s /* XXX */) -{ - return 0; -} - -/*----------------------------------------------------------------------------* - * MAP-Me - *----------------------------------------------------------------------------*/ - -int -hc_mapme_set(hc_sock_t * s, int enabled) -{ - return 0; -} - -int -hc_mapme_set_discovery(hc_sock_t * s, int enabled) -{ - return 0; -} - -int -hc_mapme_set_timescale(hc_sock_t * s, double timescale) -{ - return 0; -} - -int -hc_mapme_set_retx(hc_sock_t * s, double timescale) -{ - return 0; -} - -/*----------------------------------------------------------------------------* - * Policy - *----------------------------------------------------------------------------*/ - -#ifdef WITH_POLICY - -/* POLICY CREATE */ - -int -_hc_policy_create(hc_sock_t * s, hc_policy_t * policy, bool async) -{ - if (!IS_VALID_FAMILY(policy->family)) - return -1; - - struct { - header_control_message hdr; - add_policy_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = ADD_POLICY, - .length = 1, - .seqNum = 0, - }, - .payload = { - .address = policy->remote_addr, - .addressType = (u8)map_to_addr_type[policy->family], - .len = policy->len, - .policy = policy->policy, - } - }; - - hc_command_params_t params = { - .cmd = ACTION_CREATE, - .cmd_id = ADD_POLICY, - .size_in = sizeof(add_policy_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_policy_create(hc_sock_t * s, hc_policy_t * policy) -{ - return _hc_policy_create(s, policy, false); -} - -int -hc_policy_create_async(hc_sock_t * s, hc_policy_t * policy) -{ - return _hc_policy_create(s, policy, true); -} - -/* POLICY DELETE */ - -int -_hc_policy_delete(hc_sock_t * s, hc_policy_t * policy, bool async) -{ - if (!IS_VALID_FAMILY(policy->family)) - return -1; - - struct { - header_control_message hdr; - remove_policy_command payload; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = REMOVE_POLICY, - .length = 1, - .seqNum = 0, - }, - .payload = { - .address = policy->remote_addr, - .addressType = (u8)map_to_addr_type[policy->family], - .len = policy->len, - } - }; - - hc_command_params_t params = { - .cmd = ACTION_DELETE, - .cmd_id = REMOVE_POLICY, - .size_in = sizeof(remove_policy_command), - .size_out = 0, - .parse = NULL, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, NULL, async); -} - -int -hc_policy_delete(hc_sock_t * s, hc_policy_t * policy) -{ - return _hc_policy_delete(s, policy, false); -} - -int -hc_policy_delete_async(hc_sock_t * s, hc_policy_t * policy) -{ - return _hc_policy_delete(s, policy, true); -} - -/* POLICY LIST */ - -int -_hc_policy_list(hc_sock_t * s, hc_data_t ** pdata, bool async) -{ - struct { - header_control_message hdr; - } msg = { - .hdr = { - .messageType = REQUEST_LIGHT, - .commandID = LIST_POLICIES, - .length = 0, - .seqNum = 0, - }, - }; - - hc_command_params_t params = { - .cmd = ACTION_LIST, - .cmd_id = LIST_POLICIES, - .size_in = sizeof(list_policies_command), - .size_out = sizeof(hc_policy_t), - .parse = (HC_PARSE)hc_policy_parse, - }; - - return hc_execute_command(s, (hc_msg_t*)&msg, sizeof(msg), ¶ms, pdata, async); -} - -int -hc_policy_list(hc_sock_t * s, hc_data_t ** pdata) -{ - return _hc_policy_list(s, pdata, false); -} - -int -hc_policy_list_async(hc_sock_t * s, hc_data_t ** pdata) -{ - return _hc_policy_list(s, pdata, true); -} - -/* POLICY PARSE */ - -int -hc_policy_parse(void * in, hc_policy_t * policy) -{ - list_policies_command * cmd = (list_policies_command *) in; - - if (!IS_VALID_ADDR_TYPE(cmd->addressType)) - return -1; - - int family = map_from_addr_type[cmd->addressType]; - if (!IS_VALID_FAMILY(family)) - return -1; - - *policy = (hc_policy_t) { - .family = family, - .remote_addr = UNION_CAST(cmd->address, ip_address_t), - .len = cmd->len, - .policy = cmd->policy, - }; - return 0; -} - -/* POLICY SNPRINTF */ - -/* /!\ Please update constants in header file upon changes */ -int -hc_policy_snprintf(char * s, size_t size, hc_policy_t * policy) -{ - return 0; -} - -#endif /* WITH_POLICY */ |