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from libc cimport *

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from py cimport raise_errno

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cdef object inet_ntop (int af, void *sockaddr) :

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    """

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        Wrapper around inet_ntop, returning a PyString

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    """

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    # XXX: longest possible address...

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    cdef char buf[INET6_ADDRSTRLEN]

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    if c_inet_ntop(af, sockaddr, buf, sizeof(buf)) == NULL :

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        raise_errno('inet_ntop')

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    # autoconvert -> str

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    return buf

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cdef object inet_pton (int af, char *addr, void *sockaddr_out) :

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    cdef int ret

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    ret = c_inet_pton(af, addr, sockaddr_out)

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    if ret < 0 :

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        raise_errno('inet_pton')

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    elif ret == 0 :

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        raise NameError("Invalid network address for specified address family: %r" % (addr, ))

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cdef object getnameinfo (sockaddr *sa, socklen_t salen, int flags) :

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    cdef char hostbuf[NI_MAXHOST]

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    cdef char servbuf[NI_MAXSERV]

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    cdef int err

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    err = c_getnameinfo(sa, salen, hostbuf, sizeof(hostbuf), servbuf, sizeof(servbuf), flags)

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    if err :

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        # XXX: raise a GAIError

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        raise Exception(gai_strerror(err))

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#        raise GAIError('getnameinfo', err)

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    else :

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        return hostbuf, servbuf

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#cdef class Errno (py.OSError) :

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#    def __init__ (self, func) :

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#        self.func = func

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#        self.err = errno

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#        self.strerror = strerror(errno)

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#

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#    def __str__ (self) :

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#        return "%s: %s" % (self.func, self.strerror)

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#

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#cdef class GAIError (py.OSError) :

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#    def __init__ (self, func, err) :

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#        self.func = func

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#        self.err = err

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#        self.strerror = gai_strerror(err)

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#

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#    def __str__ (self) :

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#        return "%s: %s" % (self.func, self.strerror)

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#