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102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
// -*- C++ -*-
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#include "ace/OS_NS_arpa_inet.h"
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#if !defined (ACE_HAS_INLINED_OSCALLS)
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# include "ace/OS_NS_arpa_inet.inl"
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#endif /* ACE_HAS_INLINED_OSCALLS */
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#include "ace/Basic_Types.h"
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#include <cstdlib>
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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int
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ACE_OS::inet_aton (const char *host_name, struct in_addr *addr)
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{
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#if defined (ACE_LACKS_INET_ATON)
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# if defined (ACE_WIN32)
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// Windows Server 2003 changed the behavior of a zero-length input
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// string to inet_addr(). It used to return 0 (INADDR_ANY) but now
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// returns -1 (INADDR_NONE). It will return INADDR_ANY for a 1-space
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// string, though, as do previous versions of Windows.
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if (host_name == 0 || host_name[0] == '\0')
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host_name = " ";
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# endif /* ACE_WIN32 */
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# if defined (ACE_LACKS_INET_ADDR)
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if (!host_name)
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return 0;
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ACE_UINT32 ip = 0;
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int part = 0;
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for (const char *dot; *host_name; host_name = *dot ? dot + 1 : dot, ++part)
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{
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if (part > 3)
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return 0;
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dot = ACE_OS::strchr (host_name, '.');
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if (!dot)
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dot = host_name + ACE_OS::strlen (host_name);
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char *last;
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const unsigned long n = std::strtoul (host_name, &last, 0);
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if (last != dot)
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return 0;
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if (!*dot)
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switch (part)
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{
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case 0:
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# if ACE_SIZEOF_LONG > 4
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if (n > 0xffffffff)
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return 0;
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# endif
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ip = static_cast<ACE_UINT32> (n);
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continue;
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case 1:
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if (n > 0xffffff)
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return 0;
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ip <<= 24;
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ip |= n;
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continue;
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case 2:
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if (n > 0xffff)
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return 0;
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ip <<= 16;
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ip |= n;
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continue;
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}
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if (n > 0xff)
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return 0;
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ip <<= 8;
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ip |= n;
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}
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addr->s_addr = ACE_HTONL (ip);
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return 1;
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# else
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unsigned long ip_addr = ACE_OS::inet_addr (host_name);
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if (ip_addr == INADDR_NONE
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// Broadcast addresses are weird...
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&& ACE_OS::strcmp (host_name, "255.255.255.255") != 0)
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return 0;
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else if (addr == 0)
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return 0;
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else
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{
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addr->s_addr = ip_addr; // Network byte ordered
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return 1;
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}
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# endif // ACE_LACKS_INET_ADDR
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#elif defined (ACE_VXWORKS)
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// inet_aton() returns OK (0) on success and ERROR (-1) on failure.
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// Must reset errno first. Refer to WindRiver SPR# 34949, SPR# 36026
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::errnoSet(0);
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int result = ERROR;
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ACE_OSCALL (::inet_aton (const_cast <char*>(host_name), addr), int, ERROR, result);
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return (result == ERROR) ? 0 : 1;
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#else
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// inet_aton() returns 0 upon failure, not -1 since -1 is a valid
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// address (255.255.255.255).
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ACE_OSCALL_RETURN (::inet_aton (host_name, addr), int, 0);
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#endif /* ACE_LACKS_INET_ATON */
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}
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ACE_END_VERSIONED_NAMESPACE_DECL
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