45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
#include "util.h"
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#include <time.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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unsigned long get_tick_count()
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return (ts.tv_sec * 1000 + ts.tv_nsec / 1000000);
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}
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char *gethost_by_addr(char *host, struct sockaddr *addr, socklen_t addr_len)
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{
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struct sockaddr_storage *addr_store = (struct sockaddr_storage *)addr;
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host[0] = 0;
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switch (addr_store->ss_family) {
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case AF_INET: {
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struct sockaddr_in *addr_in;
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addr_in = (struct sockaddr_in *)addr;
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inet_ntop(AF_INET, &addr_in->sin_addr, host, addr_len);
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} break;
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case AF_INET6: {
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struct sockaddr_in6 *addr_in6;
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addr_in6 = (struct sockaddr_in6 *)addr;
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if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
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struct sockaddr_in addr_in4;
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memset(&addr_in4, 0, sizeof(addr_in4));
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memcpy(&addr_in4.sin_addr.s_addr, addr_in6->sin6_addr.s6_addr + 12, sizeof(addr_in4.sin_addr.s_addr));
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} else {
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inet_ntop(AF_INET6, &addr_in6->sin6_addr, host, addr_len);
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}
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} break;
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default:
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goto errout;
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break;
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}
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return host;
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errout:
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return NULL;
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} |