Ano-sys
95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
#include "dht.h"
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#include <stdio.h>
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#include <string.h>
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#include <netdb.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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// #define cpy(x, y, z) char *x_c = x; char *y_c = y; while(*y_c && z--) *x_c++ = *y_c++
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int server_socket_udp;
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void build_lookup_request(lookup_request* lr){
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lr->hash_id = ntohs(lr->hash_id);
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lr->node_id = ntohs(lr->node_id);
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lr->node_ip.s_addr = ntohl(lr->node_ip.s_addr);
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lr->node_port = ntohs(lr->node_port);
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// snprintf(lr->node_request, HTTP_MAX_SIZE, "%d|%hd|%d|%u|%d\r\n\r\n", lr->message_type, ntohs(lr->hash_id), ntohs(lr->node_id), ntohl(ip.s_addr), ntohs(lr->node_port));
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}
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void lookup_request_init(lookup_request* lr, uint8_t message_type, uint16_t node_id, in_addr_t node_ip, uint16_t node_port, uint16_t hash_id)
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{
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lr->message_type = message_type;
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lr->node_id = node_id;
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lr->node_ip.s_addr = node_ip;
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lr->node_port = node_port;
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lr->hash_id = hash_id;
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}
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void extract_lookup_request(lookup_request* lr){
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build_lookup_request(lr);
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}
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int call_network(lookup_request* lr, in_addr_t ip, uint16_t port){
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// int succ_sock;
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struct addrinfo hints, *servinfo; // *p;
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int rv;
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struct sockaddr_in addr;
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addr.sin_family = AF_INET;
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addr.sin_addr.s_addr = htonl(ip);
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addr.sin_port = htons(port);
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memset(&hints, 0, sizeof hints);
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_DGRAM;
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char port_str[6];
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snprintf(port_str, sizeof port_str, "%d", port);
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char ip_str[INET_ADDRSTRLEN];
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inet_ntop(AF_INET, &addr.sin_addr, ip_str, INET_ADDRSTRLEN);
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if ((rv = getaddrinfo(ip_str, port_str, &hints, &servinfo)) != 0) {
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fprintf(stderr, "Func: call_network - getaddrinfo: %s\n", gai_strerror(rv));
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return 1;
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}
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addr = *((struct sockaddr_in*) servinfo->ai_addr);
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freeaddrinfo(servinfo);
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// lr->node_ip.s_addr = ntohl(addr.sin_addr.s_addr);
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// lr->node_port = ntohs(addr.sin_port);
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perror("---CALL_NETWORK---\n");
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print_lookup_request(lr);
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build_lookup_request(lr);
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print_lookup_request(lr);
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perror("------------------\n");
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if (sendto(server_socket_udp, lr, sizeof(lookup_request), 0, (struct sockaddr*) &addr, sizeof(struct sockaddr_in)) == -1) {
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fprintf(stderr, "Func: call_network - sendto failed with errno %d: %s\n", errno, strerror(errno));
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fprintf(stderr, "Request:\n\tIP:\t%s\n\tPORT:\t%d\n", ip_str, ntohs(addr.sin_port));
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fprintf(stderr, "\tUDP_SOCKET: %d\n", server_socket_udp);
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exit(1);
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}
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return 0;
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}
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void clone_lookup_request(lookup_request* dest, lookup_request* source){
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memcpy(dest, source, sizeof(lookup_request));
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}
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void print_lookup_request(lookup_request *lr){
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fprintf(stderr, "LOOKUP_REQUEST:\n\tMessage-type: %u\n\tNode-ID: %u\n\tNode-IP: %s\n\tNode-PORT: %u\n\tHash-ID: %u\n", lr->message_type, lr->node_id, inet_ntoa(lr->node_ip), lr->node_port, lr->hash_id);
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}
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