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|
%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
license = bsd
%% module
/** @file dk4sock01.c Conversion between host and net representation.
*/
#include "dk4types.h"
#include "dk4error.h"
#include "dk4sock.h"
#if DK4_HAVE_STRINGS_H
#ifndef STRINGS_H_INCLUDED
#include <strings.h>
#define STRINGS_H_INCLUDED 1
#endif
#endif
#if (!DK4_ON_WINDOWS) \
&& (DK4_HAVE_HTONS || DK4_HAVE_NTOHS || DK4_HAVE_HTONL || DK4_HAVE_NTOHL)
#if DK4_HAVE_ARPA_INET_H
#ifndef ARPA_INET_H_INCLUDED
#include <arpa/inet.h>
#define ARPA_INET_H_INCLUDED 1
#endif
#endif
#if DK4_HAVE_NETINET_IN_H
#ifndef NETINET_IN_H_INCLUDED
#include <netinet/in.h>
#define NETINET_IN_H_INCLUDED 1
#endif
#endif
#endif
#if DK4_ON_WINDOWS || (!DK4_HAVE_HTONS) || (!DK4_HAVE_NTOHS)
#if !DK4_WORDS_BIGENDIAN
static
uint16_t
dk4socket_short_swap(uint16_t u)
{
return (
((u >> 8) & 0x00FFU)
| ((u << 8) & 0xFF00U)
);
}
#endif
#endif
#if DK4_ON_WINDOWS || (!DK4_HAVE_HTONL) || (!DK4_HAVE_NTOHL)
#if !DK4_WORDS_BIGENDIAN
static
uint32_t
dk4socket_long_swap(uint32_t u)
{
return (
( (u >> 24) & 0x000000FFUL)
| ((u >> 8) & 0x0000FF00UL)
| ((u << 8) & 0x00FF0000UL)
| ((u << 24) & 0xFF000000UL)
);
}
#endif
#endif
uint16_t
dk4socket_htons(uint16_t u)
{
#if DK4_HAVE_HTONS && (!DK4_ON_WINDOWS)
return (htons(u));
#else
#if DK4_WORDS_BIGENDIAN
return u;
#else
return (dk4socket_short_swap(u));
#endif
#endif
}
uint16_t
dk4socket_ntohs(uint16_t u)
{
#if DK4_HAVE_NTOHS && (!DK4_ON_WINDOWS)
return (ntohs(u));
#else
#if DK4_WORDS_BIGENDIAN
return u;
#else
return (dk4socket_short_swap(u));
#endif
#endif
}
uint32_t
dk4socket_htonl(uint32_t u)
{
#if DK4_HAVE_HTONL && (!DK4_ON_WINDOWS)
return (htonl(u));
#else
#if DK4_WORDS_BIGENDIAN
return u;
#else
return (dk4socket_long_swap(u));
#endif
#endif
}
uint32_t
dk4socket_ntohl(uint32_t u)
{
#if DK4_HAVE_NTOHL && (!DK4_ON_WINDOWS)
return (ntohl(u));
#else
#if DK4_WORDS_BIGENDIAN
return u;
#else
return (dk4socket_long_swap(u));
#endif
#endif
}
void
dk4socket_swap_bytes_if_not_bigendian(void *buf, size_t sz)
{
#if !DK4_WORDS_BIGENDIAN
unsigned char *ucp; /* Buffer address converted ty bytes pointer */
size_t szh; /* Half of the size sz */
size_t i; /* Current byte index, 0 to szh-1 */
unsigned char u; /* Byte variable used to swap bytes */
if ((NULL != buf) && (0 < sz)) {
ucp = (unsigned char *)buf;
szh = sz / 2;
for (i = 0; i < szh; i++) {
u = ucp[i];
ucp[i] = ucp[sz - 1 - i];
ucp[sz - 1 - i] = u;
}
}
#endif
}
int
dk4socket_mask_bits(unsigned long *dptr, size_t sz, dk4_er_t *erp)
{
unsigned long res = 0UL;
unsigned long val = 0x80000000UL;
int back = DK4_SOCKET_RESULT_FAILED;
if (NULL != dptr) {
if ((0 < sz) && (33 > sz)) {
while (0 < sz--) {
res |= val;
val = val / 2UL;
}
*dptr = res;
back = DK4_SOCKET_RESULT_SUCCESS;
} else {
dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
}
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
int
dk4socket_mask6_bits(struct in6_addr *inp, size_t sz, dk4_er_t *erp)
{
int back = DK4_SOCKET_RESULT_FAILED;
size_t i = 0;
size_t j = 0;
unsigned char rchr = 0x00;
unsigned char vchr = 0x80;
if (NULL != inp) {
for (i = 0; i < 16; i++) { inp->s6_addr[i] = 0xFF; }
if ((0 < sz) && (129 > sz)) {
for (i = 0; i < 16; i++) {
rchr = 0x00;
vchr = 0x80;
for (j = 0; j < 8; j++) {
if (0 < sz) {
rchr |= vchr;
sz--;
}
vchr = vchr / 2;
}
inp->s6_addr[i] = rchr;
}
back = DK4_SOCKET_RESULT_SUCCESS;
} else {
dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
}
#endif
void
dk4socket_set_one_bytes(void *ptr, size_t nbytes)
{
unsigned char *cptr;
cptr = ptr;
while (0 < nbytes--) { *(cptr++) = 0x01; }
}
#if DK4_HAVE_STRUCT_SOCKADDR_UN
size_t
dk4socket_unix_length(const struct sockaddr_un *sock)
{
size_t back = 0;
if (NULL != sock) {
#ifdef SUN_LEN
back = SUN_LEN(sock);
#else
back = sizeof(struct sockaddr_un)
- sizeof(sock->sun_path)
+ strlen(sock->sun_path);
#endif
}
return back;
}
#endif
int
dk4socket_pf_for_af(int af)
{
int back = 0;
switch (af) {
#if defined(AF_UNSPEC) && defined(PF_UNSPEC)
case AF_UNSPEC : { back = PF_UNSPEC ; } break;
#endif
#if defined(AF_UNIX) && defined(PF_UNIX)
case AF_UNIX : { back = PF_UNIX ; } break;
#endif
#if defined(AF_LOCAL) && defined(PF_LOCAL) && \
(!(defined(AF_UNIX) && defined(PF_UNIX)))
case AF_LOCAL : { back = PF_LOCAL ; } break;
#endif
#if defined(AF_FILE) && defined(PF_FILE) && \
(!(defined(AF_UNIX) && defined(PF_UNIX))) && \
(!(defined(AF_LOCAL) && defined(PF_LOCAL)))
case AF_FILE : { back = PF_FILE ; } break;
#endif
#if defined(AF_INET) && defined(PF_INET)
case AF_INET : { back = PF_INET ; } break;
#endif
#if defined(AF_AX25) && defined(PF_AX25)
case AF_AX25 : { back = PF_AX25 ; } break;
#endif
#if defined(AF_IPX) && defined(PF_IPX)
case AF_IPX : { back = PF_IPX ; } break;
#endif
#if defined(AF_APPLETALK) && defined(PF_APPLETALK)
case AF_APPLETALK : { back = PF_APPLETALK ; } break;
#endif
#if defined(AF_NETROM) && defined(PF_NETROM)
case AF_NETROM : { back = PF_NETROM ; } break;
#endif
#if defined(AF_BRIDGE) && defined(PF_BRIDGE)
case AF_BRIDGE : { back = PF_BRIDGE ; } break;
#endif
#if defined(AF_ATMPVC) && defined(PF_ATMPVC)
case AF_ATMPVC : { back = PF_ATMPVC ; } break;
#endif
#if defined(AF_X25) && defined(PF_X25)
case AF_X25 : { back = PF_X25 ; } break;
#endif
#if defined(AF_INET6) && defined(PF_INET6)
case AF_INET6 : { back = PF_INET6 ; } break;
#endif
#if defined(AF_ROSE) && defined(PF_ROSE)
case AF_ROSE : { back = PF_ROSE ; } break;
#endif
#if defined(AF_DECnet) && defined(PF_DECnet)
case AF_DECnet : { back = PF_DECnet ; } break;
#endif
#if defined(AF_NETBEUI) && defined(PF_NETBEUI)
case AF_NETBEUI : { back = PF_NETBEUI ; } break;
#endif
#if defined(AF_SECURITY) && defined(PF_SECURITY)
case AF_SECURITY : { back = PF_SECURITY ; } break;
#endif
#if defined(AF_KEY) && defined(PF_KEY)
case AF_KEY : { back = PF_KEY ; } break;
#endif
#if defined(AF_NETLINK) && defined(PF_NETLINK)
case AF_NETLINK : { back = PF_NETLINK ; } break;
#endif
#if defined(AF_ROUTE) && defined(PF_ROUTE) && \
(!(defined(AF_NETLINK) && defined(PF_NETLINK)))
case AF_ROUTE : { back = PF_ROUTE ; } break;
#endif
#if defined(AF_PACKET) && defined(PF_PACKET)
case AF_PACKET : { back = PF_PACKET ; } break;
#endif
#if defined(AF_ASH) && defined(PF_ASH)
case AF_ASH : { back = PF_ASH ; } break;
#endif
#if defined(AF_ECONET) && defined(PF_ECONET)
case AF_ECONET : { back = PF_ECONET ; } break;
#endif
#if defined(AF_ATMSVC) && defined(PF_ATMSVC)
case AF_ATMSVC : { back = PF_ATMSVC ; } break;
#endif
#if defined(AF_RDS) && defined(PF_RDS)
case AF_RDS : { back = PF_RDS ; } break;
#endif
#if defined(AF_SNA) && defined(PF_SNA)
case AF_SNA : { back = PF_SNA ; } break;
#endif
#if defined(AF_IRDA) && defined(PF_IRDA)
case AF_IRDA : { back = PF_IRDA ; } break;
#endif
#if defined(AF_PPPOX) && defined(PF_PPPOX)
case AF_PPPOX : { back = PF_PPPOX ; } break;
#endif
#if defined(AF_WANPIPE) && defined(PF_WANPIPE)
case AF_WANPIPE : { back = PF_WANPIPE ; } break;
#endif
#if defined(AF_LLC) && defined(PF_LLC)
case AF_LLC : { back = PF_LLC ; } break;
#endif
#if defined(AF_CAN) && defined(PF_CAN)
case AF_CAN : { back = PF_CAN ; } break;
#endif
#if defined(AF_TIPC) && defined(PF_TIPC)
case AF_TIPC : { back = PF_TIPC ; } break;
#endif
#if defined(AF_BLUETOOTH) && defined(PF_BLUETOOTH)
case AF_BLUETOOTH : { back = PF_BLUETOOTH ; } break;
#endif
#if defined(AF_IUCV) && defined(PF_IUCV)
case AF_IUCV : { back = PF_IUCV ; } break;
#endif
#if defined(AF_RXRPC) && defined(PF_RXRPC)
case AF_RXRPC : { back = PF_RXRPC ; } break;
#endif
#if defined(AF_ISDN) && defined(PF_ISDN)
case AF_ISDN : { back = PF_ISDN ; } break;
#endif
#if defined(AF_PHONET) && defined(PF_PHONET)
case AF_PHONET : { back = PF_PHONET ; } break;
#endif
#if defined(AF_IEEE802154) && defined(PF_IEEE802154)
case AF_IEEE802154 : { back = PF_IEEE802154 ; } break;
#endif
#if defined(AF_CAIF) && defined(PF_CAIF)
case AF_CAIF : { back = PF_CAIF ; } break;
#endif
#if defined(AF_ALG) && defined(PF_ALG)
case AF_ALG : { back = PF_ALG ; } break;
#endif
#if defined(AF_NFC) && defined(PF_NFC)
case AF_NFC : { back = PF_NFC ; } break;
#endif
#if defined(AF_VSOCK) && defined(PF_VSOCK)
case AF_VSOCK : { back = PF_VSOCK ; } break;
#endif
}
return back;
}
int
dk4socket_correct_addr_lgt(const struct sockaddr *soa, size_t *plgt)
{
int back = 0;
if ((NULL != soa) && (NULL != plgt)) {
back = 1;
switch (soa->sa_family) {
case AF_INET : {
if (sizeof(struct sockaddr_in) <= *plgt) {
*plgt = sizeof(struct sockaddr_in);
} else {
back = 0;
}
} break;
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
case AF_INET6 : {
if (sizeof(struct sockaddr_in6) <= *plgt) {
*plgt = sizeof(struct sockaddr_in6);
} else {
back = 0;
}
} break;
#endif
}
}
return back;
}
|
