/* * 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 . * * 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; }