101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
/*
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* convert from binary form of SA ID to ASCII
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* Copyright (C) 1998, 1999, 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 "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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- satoa - convert SA to ASCII "ah507@1.2.3.4"
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*/
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size_t /* space needed for full conversion */
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satoa(sa, format, dst, dstlen)
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struct sa_id 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 handled yet */
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int base;
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struct typename *tn;
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char buf[30+ADDRTOA_BUF];
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switch (format) {
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case 0:
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base = 16; /* temporarily at least */
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break;
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case 'd':
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base = 10;
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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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for (tn = typenames; tn->name != NULL; tn++)
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if (sa.proto == tn->type)
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break;
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if (tn->name == NULL)
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return 0;
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if (strcmp(tn->name, PASSTHROUGHTYPE) == 0 &&
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sa.spi == PASSTHROUGHSPI &&
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sa.dst.s_addr == PASSTHROUGHDST) {
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strcpy(buf, PASSTHROUGHNAME);
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len = strlen(buf);
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} else if (sa.proto == SA_INT && sa.dst.s_addr == 0) {
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char *p;
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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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strcpy(buf, p);
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len = strlen(buf);
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}
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}
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if (len == 0) {
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strcpy(buf, tn->name);
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len = strlen(buf);
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len += ultoa(ntohl(sa.spi), base, buf+len, sizeof(buf)-len);
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*(buf+len-1) = '@';
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len += addrtoa(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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strcpy(dst, buf);
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}
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return len;
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}
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