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/*
* convert from binary form of SA ID to ASCII
* Copyright (C) 1998, 1999, 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 "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 }
};
/*
- satoa - convert SA to ASCII "ah507@1.2.3.4"
*/
size_t /* space needed for full conversion */
satoa(sa, format, dst, dstlen)
struct sa_id sa;
int format; /* character */
char *dst; /* need not be valid if dstlen is 0 */
size_t dstlen;
{
size_t len = 0; /* 0 means not handled yet */
int base;
struct typename *tn;
char buf[30+ADDRTOA_BUF];
switch (format) {
case 0:
base = 16; /* temporarily at least */
break;
case 'd':
base = 10;
break;
default:
return 0;
break;
}
for (tn = typenames; tn->name != NULL; tn++)
if (sa.proto == tn->type)
break;
if (tn->name == NULL)
return 0;
if (strcmp(tn->name, PASSTHROUGHTYPE) == 0 &&
sa.spi == PASSTHROUGHSPI &&
sa.dst.s_addr == PASSTHROUGHDST) {
strcpy(buf, PASSTHROUGHNAME);
len = strlen(buf);
} else if (sa.proto == SA_INT && sa.dst.s_addr == 0) {
char *p;
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) {
strcpy(buf, tn->name);
len = strlen(buf);
len += ultoa(ntohl(sa.spi), base, buf+len, sizeof(buf)-len);
*(buf+len-1) = '@';
len += addrtoa(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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