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%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
license = bsd
%% module
#include "dk4conf.h"
#include "dk4types.h"
#include "dk4error.h"
#include "dk4mem.h"
#include "dk4sock.h"
#include "dk4str8.h"
#include "dk4mai8dsz.h"
$!trace-include
#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;
$? "+ dk4socket_c8_get_allowed_peer \"%!8s\"", str
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) { $? ". mask"
res = dk4ma_input_c8_dec_size_t(&bitno, maptr, &endptr, 1, NULL);
if (0 != res) { $? ". mask by number of bits"
/* 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 { $? "! out of range"
}
} 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 { $? "! out of range"
}
} break;
#endif
default : {
/* Must not happen */
} break;
}
} else { $? ". mask address"
/* 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 { $? "! out of range"
}
} 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 { $? "! out of range"
}
} break;
#endif
}
}
} else { $? ". no mask"
/* 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 { $? "! address invalid"
}
} else { $? "! string too long"
}
} else { $? "! args"
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
$? "- dk4socket_c8_get_allowed_peer %d", back
return back;
}
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