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