93 lines
2.1 KiB
C++
93 lines
2.1 KiB
C++
#include <cstdio>
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#include <string.h>
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#include <stdarg.h>
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#include <arpa/inet.h>
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#include "util.hpp"
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int debug;
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void do_debugf(int level, const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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if(debug >= level) {
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vfprintf(stderr, format, args);
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fflush(stderr);
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}
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va_end(args);
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}
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const char *
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format_address(const unsigned char *address)
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{
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static char buf[4][INET6_ADDRSTRLEN];
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static int i = 0;
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i = (i + 1) % 4;
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/*
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if(v4mapped(address))
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inet_ntop(AF_INET, address + 12, buf[i], INET6_ADDRSTRLEN);
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else
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*/
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inet_ntop(AF_INET6, address, buf[i], INET6_ADDRSTRLEN);
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return buf[i];
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}
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const char*
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human_readable_unit(double value, const char* unit) {
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static char buf[4][24];
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static int cur_buf = 0;
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static const char MULTIPLIERS[] = {' ', 'k', 'M', 'G', 'T'};
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static const int NB_MULTIPLIERS = 5;
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int multiplier = 0;
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double div_value = value;
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cur_buf = (cur_buf + 1) % 4;
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while(div_value >= 1000 && multiplier < NB_MULTIPLIERS) {
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div_value /= 1000;
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multiplier++;
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}
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snprintf(buf[cur_buf], 24, "%.1lf %c%s",
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div_value, MULTIPLIERS[multiplier], unit);
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return buf[cur_buf];
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}
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namespace std {
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size_t hash<in6_addr>::operator() (const in6_addr& addr) const {
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size_t out_hash = 0;
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for(int i=0; i < 4; ++i) {
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uint32_t value;
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memcpy((unsigned char*)(&value),
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addr.s6_addr + 4*i,
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4);
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out_hash ^= (std::hash<uint32_t>{}(value) << 1);
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}
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return out_hash;
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}
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bool equal_to<in6_addr>::operator()(
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const in6_addr& lhs, const in6_addr& rhs) const
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{
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return memcmp(lhs.s6_addr, rhs.s6_addr, sizeof(lhs.s6_addr)) == 0;
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}
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}
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MsgException::MsgException(const std::string& msg, int code, bool is_perror)
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: _msg(msg), _code(code)
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{
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_what = _msg;
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if(_code != 0) {
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if(is_perror) {
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_what += ": ";
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_what += strerror(errno);
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}
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char remainder[20];
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sprintf(remainder, " (code %d)", _code);
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_what += remainder;
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}
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}
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