tools/Tools2.c (860e91b) - BlinkenLib · BlinkenArea

Tools2.c

/* BlinkenLib
   Copyright 2004-2014 Stefan Schuermans <stefan@schuermans.info>
   Copyleft GNU public license - http://www.gnu.org/copyleft/gpl.html
   a blinkenarea.org project */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#endif

#include "Tools2.h"

#ifdef WIN32
static int inet_pton(int af, const char *src, void *dst) {
  struct sockaddr_storage ss;
  int size = sizeof(ss);
  char src_copy[INET6_ADDRSTRLEN + 1];

ZeroMemory(&ss, sizeof(ss));
  strncpy(src_copy, src, sizeof(src_copy));
  src_copy[sizeof(src_copy) - 1] = 0;

if (WSAStringToAddress(src_copy, af, NULL, (struct sockaddr *)&ss, &size) ==
      0) {
    switch (af) {
    case AF_INET:
      *(struct in_addr *)dst = ((struct sockaddr_in *)&ss)->sin_addr;
      return 1;
    case AF_INET6:
      *(struct in6_addr *)dst = ((struct sockaddr_in6 *)&ss)->sin6_addr;
      return 1;
    }
  }
  return 0;
}
#endif

// convert text to IPv4 address
int txt2addr(char *text, struct sockaddr_in *addr) {
  char txt[48];
  unsigned short port;

if (sscanf(text, "%32[0-9.]:%hu", txt, &port) == 2) {
    addr->sin_family = AF_INET;
    addr->sin_port = htons(port);
    addr->sin_addr.s_addr = inet_addr(txt);
    return 1;
  } else if (sscanf(text, "%32[0-9.]", txt) == 1) {
    addr->sin_family = AF_INET;
    addr->sin_port = htons(2323);
    addr->sin_addr.s_addr = inet_addr(txt);
    return 1;
  } else if (sscanf(text, "%hu", &port) == 1) {
    addr->sin_family = AF_INET;
    addr->sin_port = htons(port);
    addr->sin_addr.s_addr = htonl(INADDR_ANY);
    return 1;
  } else {
    return 0;
  }
}

// convert text to IPv6 address
int txt2addr6(char *text, struct sockaddr_in6 *addr6) {
  char txt[128];
  unsigned short port;

if (sscanf(text, "[%96[0-9a-fA-F:]]:%hu", txt, &port) == 2) {
    addr6->sin6_family = AF_INET6;
    addr6->sin6_port = htons(port);
    if (inet_pton(AF_INET6, txt, &addr6->sin6_addr))
      return 1;
    else
      return 0;
  } else if (sscanf(text, "[%96[0-9a-fA-F:]]", txt) == 1) {
    addr6->sin6_family = AF_INET6;
    addr6->sin6_port = htons(2323);
    if (inet_pton(AF_INET6, txt, &addr6->sin6_addr))
      return 1;
    else
      return 0;
  } else if (sscanf(text, "%hu", &port) == 1) {
    addr6->sin6_family = AF_INET6;
    addr6->sin6_port = htons(port);
    if (inet_pton(AF_INET6, "::", &addr6->sin6_addr))
      return 1;
    else
      return 0;
  } else {
    return 0;
  }
}

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