73 lines
2 KiB
C
73 lines
2 KiB
C
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#include <string.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <uuid/uuid.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <errno.h>
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#include <logger.h>
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#include <handlers.h>
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#include <helpers.h>
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#include <binn.h>
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#include <enums.h>
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void
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handler_discovery(int fd, controller_t *controller)
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{
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ssize_t bytes_transferred;
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uint16_t discovery_answer_port;
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struct sockaddr_in si_other;
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socklen_t slen = sizeof(si_other);
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if((bytes_transferred = recvfrom(fd, &discovery_answer_port, sizeof(discovery_answer_port), 0, (struct sockaddr *) &si_other, &slen)) <= 0)
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{
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LOG_ERROR("received invalid discovery from %s", inet_ntoa(si_other.sin_addr));
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return;
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}
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LOG_DEBUG("received discovery from %s for port %d", inet_ntoa(si_other.sin_addr), discovery_answer_port);
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if(discovery_answer_port == 0)
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{
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LOG_ERROR("invalid port received");
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return;
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}
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binn *map = binn_map();
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binn_map_set_blob(map, DISCOVERY_MAPPING_ID, &controller->id, sizeof(uuid_t));
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binn_map_set_str(map, DISCOVERY_MAPPING_NAME, controller->name);
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binn_map_set_uint32(map, DISCOVERY_MAPPING_COMMAND_PORT, controller->command_port);
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binn_map_set_uint8(map, DISCOVERY_MAPPING_RELAY_COUNT, controller->relay_count);
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void *payload = binn_ptr(map);
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size_t payload_size = binn_size(map);
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int fd_answer = helper_connect_tcp_server(inet_ntoa(si_other.sin_addr), discovery_answer_port);
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if(fd_answer == -1)
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{
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LOG_ERROR("error during connecting");
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binn_free(map);
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return;
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}
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if((bytes_transferred = send(fd_answer, &payload_size, sizeof(payload_size), 0)) <= 0)
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{
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LOG_ERROR("error during sending");
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binn_free(map);
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return;
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}
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if((bytes_transferred = send(fd_answer, payload, payload_size, 0)) <= 0)
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{
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LOG_ERROR("error during sending");
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binn_free(map);
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return;
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}
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close(fd_answer);
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}
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