/* * 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 . * * 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 #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; }