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/*
* convert from binary form of SA ID to text
* Copyright (C) 2000, 2001 Henry Spencer.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/lgpl.txt>.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
* License for more details.
*/
#include <sys/socket.h>
#include "internal.h"
#include "freeswan.h"
static struct typename {
char type;
char *name;
} typenames[] = {
{ SA_AH, "ah" },
{ SA_ESP, "esp" },
{ SA_IPIP, "tun" },
{ SA_COMP, "comp" },
{ SA_INT, "int" },
{ 0, NULL }
};
/*
- satot - convert SA to text "ah507@1.2.3.4"
*/
size_t /* space needed for full conversion */
satot(sa, format, dst, dstlen)
const ip_said *sa;
int format; /* character */
char *dst; /* need not be valid if dstlen is 0 */
size_t dstlen;
{
size_t len = 0; /* 0 means "not recognized yet" */
int base;
int showversion; /* use delimiter to show IP version? */
struct typename *tn;
char *p;
char *pre;
char buf[10+1+ULTOT_BUF+ADDRTOT_BUF];
char unk[10];
switch (format) {
case 0:
base = 16;
showversion = 1;
break;
case 'f':
base = 17;
showversion = 1;
break;
case 'x':
base = 'x';
showversion = 0;
break;
case 'd':
base = 10;
showversion = 0;
break;
default:
return 0;
break;
}
pre = NULL;
for (tn = typenames; tn->name != NULL; tn++)
if (sa->proto == tn->type) {
pre = tn->name;
break; /* NOTE BREAK OUT */
}
if (pre == NULL) { /* unknown protocol */
strcpy(unk, "unk");
(void) ultot((unsigned char)sa->proto, 10, unk+strlen(unk),
sizeof(unk)-strlen(unk));
pre = unk;
}
if (strcmp(pre, PASSTHROUGHTYPE) == 0 &&
sa->spi == PASSTHROUGHSPI &&
isunspecaddr(&sa->dst)) {
strcpy(buf, (addrtypeof(&sa->dst) == AF_INET) ?
PASSTHROUGH4NAME :
PASSTHROUGH6NAME);
len = strlen(buf);
}
if (sa->proto == SA_INT && addrtypeof(&sa->dst) == AF_INET &&
isunspecaddr(&sa->dst)) {
switch (ntohl(sa->spi)) {
case SPI_PASS: p = "%pass"; break;
case SPI_DROP: p = "%drop"; break;
case SPI_REJECT: p = "%reject"; break;
case SPI_HOLD: p = "%hold"; break;
case SPI_TRAP: p = "%trap"; break;
case SPI_TRAPSUBNET: p = "%trapsubnet"; break;
default: p = NULL; break;
}
if (p != NULL) {
strcpy(buf, p);
len = strlen(buf);
}
}
if (len == 0) { /* general case needed */
strcpy(buf, pre);
len = strlen(buf);
if (showversion) {
*(buf+len) = (addrtypeof(&sa->dst) == AF_INET) ? '.' :
':';
len++;
*(buf+len) = '\0';
}
len += ultot(ntohl(sa->spi), base, buf+len, sizeof(buf)-len);
*(buf+len-1) = '@';
len += addrtot(&sa->dst, 0, buf+len, sizeof(buf)-len);
}
if (dst != NULL) {
if (len > dstlen)
*(buf+dstlen-1) = '\0';
strcpy(dst, buf);
}
return len;
}
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