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path: root/support/dktools/dk4sock26.c
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/*
	WARNING: This file was generated by dkct.
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4sock26.ctr
*/

/*
Copyright (C) 2015-2017, Dirk Krause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
  to endorse or promote products derived from this software without specific
  prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**	@file dk4sock26.c The dk4sock26 module.
*/


#line 8 "dk4sock26.ctr"



#include "dk4conf.h"
#include "dk4types.h"
#include "dk4error.h"
#include "dk4mem.h"
#include "dk4sock.h"
#include "dk4str8.h"
#include "dk4mai8dsz.h"





#line 22 "dk4sock26.ctr"



#if TRACE_DEBUG

static
void
dk4socket_c8_debug_allowed_peer(dk4_allowed_peer_t *peerptr)
{
  FILE *fipo;
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
  unsigned char		*ucptr;
  size_t		 i;
  size_t		 pass;
#endif
  unsigned long ul1, ul2;
  fipo = dktrace_file();

  if (NULL != fipo) {
    switch (peerptr->af) {
      case AF_INET : {
        ul1 = (peerptr->data).ipv4.ad.s_addr;
	ul2 = (peerptr->data).ipv4.ma.s_addr;
	ul1 = dk4socket_ntohl(ul1);
	ul2 = dk4socket_ntohl(ul2);
        fprintf(
	  fipo,
	  "Address/Mask: %lu.%lu.%lu.%lu/%lu.%lu.%lu.%lu\n",
	  ((ul1 >> 24) & 0x000000FFUL),
	  ((ul1 >> 16) & 0x000000FFUL),
	  ((ul1 >>  8) & 0x000000FFUL),
	  ((ul1      ) & 0x000000FFUL),
	  ((ul2 >> 24) & 0x000000FFUL),
	  ((ul2 >> 16) & 0x000000FFUL),
	  ((ul2 >>  8) & 0x000000FFUL),
	  ((ul2      ) & 0x000000FFUL)
	);
      } break;
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
      case AF_INET6 : {
        fputs("Address/Mask: ", fipo);
	for (pass = 0; pass < 2; pass++) {
	  if (0 != pass) {
	    fputc('/', fipo);
	    ucptr = &((peerptr->data).ipv6.ma.s6_addr[0]);
	  } else {
	    ucptr = &((peerptr->data).ipv6.ad.s6_addr[0]);
	  }
	  for (i = 0; i < 16; i++) {
	    if ((0 != i) && (0 == (i % 2))) {
	      fputc(':', fipo);
	    }
	    fprintf(fipo, "%02x", *(ucptr++));
	  }
	}
	fputc('\n', fipo);
      } break;
#endif
    }
  }
}

#endif



int
dk4socket_c8_get_allowed_peer(
  dk4_allowed_peer_t	*peerptr,
  const char		*str,
  dk4_er_t		*erp
)
{
  char		 mycp[128];
  IN_ADDR	 in4;
  IN_ADDR	 ma4;
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
  IN6_ADDR	 in6;
  IN6_ADDR	 ma6;
#endif
  char		*maptr;
  const char	*endptr	= NULL;
  size_t	 bitno	= 0;
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
  size_t	 i	= 0;
#endif
  unsigned long	 nm4	= 0UL;
  int		 back	= DK4_SOCKET_RESULT_FAILED;
  int		 af	= AF_UNSPEC;
  int		 res	= 0;
  

#line 113 "dk4sock26.ctr"
  if ((NULL != peerptr) && (NULL != str)) {
    if (0 != dk4str8_cpy_s(mycp, sizeof(mycp), str, erp)) {
      maptr = dk4str8_chr(mycp, '/');
      if (NULL != maptr) { *(maptr++) = '\0'; }
      back = dk4socket_c8_inet_pton( &in4, sizeof(in4), AF_INET, mycp, erp);
      if (DK4_SOCKET_RESULT_SUCCESS == back) { af = AF_INET; }
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
      else {
        back = dk4socket_c8_inet_pton( &in6, sizeof(in6), AF_INET6, mycp, erp);
	if (DK4_SOCKET_RESULT_SUCCESS == back) { af = AF_INET6; }
      }
#endif
      if (DK4_SOCKET_RESULT_SUCCESS == back) {
        back = DK4_SOCKET_RESULT_FAILED;
        if (NULL != maptr) {			

#line 128 "dk4sock26.ctr"
	  res = dk4ma_input_c8_dec_size_t(&bitno, maptr, &endptr, 1, NULL);
	  if (0 != res) {			

#line 130 "dk4sock26.ctr"
	    /*	Bit number was specified.
	    */
	    switch (af) {
	      case AF_INET : {
		if (0 != dk4socket_mask_bits(&nm4, bitno, erp)) {
		  ma4.s_addr = dk4socket_htonl(nm4);
		  DK4_MEMCPY(&((peerptr->data).ipv4.ad),&in4,sizeof(in4));
		  DK4_MEMCPY(&((peerptr->data).ipv4.ma),&ma4,sizeof(ma4));
		  peerptr->af = af;
	          back = DK4_SOCKET_RESULT_SUCCESS;
		} else {				

#line 141 "dk4sock26.ctr"
		}
	      } break;
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
	      case AF_INET6 : {
		back = dk4socket_mask6_bits(&ma6, bitno, erp);
		if (DK4_SOCKET_RESULT_SUCCESS == back) {
		  DK4_MEMCPY(&((peerptr->data).ipv6.ad),&in6,sizeof(in6));
		  DK4_MEMCPY(&((peerptr->data).ipv6.ma),&ma6,sizeof(ma6));
		  peerptr->af = af;
		} else {				

#line 151 "dk4sock26.ctr"
		}
	      } break;
#endif
	      default : {
	        /* Must not happen */
	      } break;
	    }
	  } else {				

#line 159 "dk4sock26.ctr"
	    /*	Not a bit number, probably an address.
	    */
	    switch (af) {
	      case AF_INET : {
	        back = dk4socket_c8_inet_pton(
		  &ma4, sizeof(ma4), AF_INET, maptr, erp
		);
		if (DK4_SOCKET_RESULT_SUCCESS == back) {
		  DK4_MEMCPY(&((peerptr->data).ipv4.ad),&in4,sizeof(in4));
		  DK4_MEMCPY(&((peerptr->data).ipv4.ma),&ma4,sizeof(ma4));
		  peerptr->af = af;
		} else {				

#line 171 "dk4sock26.ctr"
		}
	      } break;
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
	      case AF_INET6 : {
	        back = dk4socket_c8_inet_pton(
		  &ma6, sizeof(ma6), AF_INET6, maptr, erp
		);
		if (DK4_SOCKET_RESULT_SUCCESS == back) {
		  DK4_MEMCPY(&((peerptr->data).ipv6.ad),&in6,sizeof(in6));
		  DK4_MEMCPY(&((peerptr->data).ipv6.ma),&ma6,sizeof(ma6));
		  peerptr->af = af;
		} else {				

#line 183 "dk4sock26.ctr"
		}
	      } break;
#endif
	    }
	  }
	} else {					

#line 189 "dk4sock26.ctr"
	  /*	Host was specified
	  */
	  switch (af) {
	    case AF_INET : {
	      ma4.s_addr = dk4socket_htonl(0xFFFFFFFFUL);
	      DK4_MEMCPY(&((peerptr->data).ipv4.ad), &in4, sizeof(in4));
	      DK4_MEMCPY(&((peerptr->data).ipv4.ma), &ma4, sizeof(ma4));
	      peerptr->af = af;
	      back = DK4_SOCKET_RESULT_SUCCESS;
	    } break;
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
	    case AF_INET6 : {
	      for (i = 0; i < 16; i++) { ma6.s6_addr[i] = 0xFF; }
	      DK4_MEMCPY(&((peerptr->data).ipv6.ad), &in6, sizeof(in6));
	      DK4_MEMCPY(&((peerptr->data).ipv6.ma), &ma6, sizeof(ma6));
	      peerptr->af = af;
	      back = DK4_SOCKET_RESULT_SUCCESS;
	    } break;
#endif
	    default : {
	      /* Must not happen */
	    } break;
	  }
	}
      } else {					

#line 214 "dk4sock26.ctr"
      }
    } else {					

#line 216 "dk4sock26.ctr"
    }
  } else {					

#line 218 "dk4sock26.ctr"
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
#if TRACE_DEBUG
  if (DK4_SOCKET_RESULT_SUCCESS == back) {
    dk4socket_c8_debug_allowed_peer(peerptr);
  }
#endif
  

#line 226 "dk4sock26.ctr"
  return back;
}