/* $OpenBSD: ipsecadm.c,v 1.71 2003/12/02 23:16:29 markus Exp $ */ /* * The authors of this code are John Ioannidis (ji@tla.org), * Angelos D. Keromytis (kermit@csd.uch.gr) and * Niels Provos (provos@physnet.uni-hamburg.de). * * This code was written by John Ioannidis for BSD/OS in Athens, Greece, * in November 1995. * * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996, * by Angelos D. Keromytis. * * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis * and Niels Provos. * * Additional features in 1999 by Angelos D. Keromytis. * * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis, * Angelos D. Keromytis and Niels Provos. * Copyright (c) 2001, Angelos D. Keromytis. * * Permission to use, copy, and modify this software with or without fee * is hereby granted, provided that this entire notice is included in * all copies of any software which is or includes a copy or * modification of this software. * You may use this code under the GNU public license if you so wish. Please * contribute changes back to the authors under this freer than GPL license * so that we may further the use of strong encryption without limitations to * all. * * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR * PURPOSE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define KEYSIZE_LIMIT 1024 #define ESP_OLD 0x01 #define ESP_NEW 0x02 #define AH_OLD 0x04 #define AH_NEW 0x08 #define IPCOMP 0x10 #define XF_ENC 0x10 #define XF_AUTH 0x20 #define DEL_SPI 0x30 #define GRP_SPI 0x40 #define FLOW 0x50 #define FLUSH 0x70 #define ENC_IP 0x80 #define XF_COMP 0x90 #define SHOW 0xa0 #define MONITOR 0xb0 #define CMD_MASK 0xf0 #define isencauth(x) ((x)&~CMD_MASK) #define iscmd(x,y) (((x) & CMD_MASK) == (y)) typedef struct { char *name; int id, flags; } transform; transform xf[] = { { "des", SADB_EALG_DESCBC, XF_ENC | ESP_OLD | ESP_NEW }, { "3des", SADB_EALG_3DESCBC, XF_ENC | ESP_OLD | ESP_NEW }, { "aes", SADB_X_EALG_AES, XF_ENC | ESP_NEW }, { "blf", SADB_X_EALG_BLF, XF_ENC | ESP_NEW }, { "cast", SADB_X_EALG_CAST, XF_ENC | ESP_NEW }, { "skipjack", SADB_X_EALG_SKIPJACK, XF_ENC | ESP_NEW }, { "md5", SADB_AALG_MD5HMAC, XF_AUTH | AH_NEW | ESP_NEW }, { "sha1", SADB_AALG_SHA1HMAC, XF_AUTH | AH_NEW | ESP_NEW }, { "sha2-256", SADB_X_AALG_SHA2_256, XF_AUTH | AH_NEW | ESP_NEW }, { "sha2-384", SADB_X_AALG_SHA2_384, XF_AUTH | AH_NEW | ESP_NEW }, { "sha2-512", SADB_X_AALG_SHA2_512, XF_AUTH | AH_NEW | ESP_NEW }, { "md5", SADB_X_AALG_MD5, XF_AUTH | AH_OLD }, { "sha1", SADB_X_AALG_SHA1, XF_AUTH | AH_OLD }, { "rmd160", SADB_X_AALG_RIPEMD160HMAC, XF_AUTH | AH_NEW | ESP_NEW }, { "deflate", SADB_X_CALG_DEFLATE, XF_COMP | IPCOMP }, { "lzs", SADB_X_CALG_LZS, XF_COMP | IPCOMP }, }; #define ROUNDUP(x) (((x) + sizeof(u_int64_t) - 1) & ~(sizeof(u_int64_t) - 1)) extern void ipsecadm_monitor(void); extern void ipsecadm_show(u_int8_t); int addrparse(const char *, struct sockaddr *, struct sockaddr *); void xf_set(struct iovec *, int, int); int x2i(char *); int isvalid(char *, int, int); void usage(void); /* * returns 0 if "str" represents an address, returns 1 if address/mask, * returns -1 on failure. */ int addrparse(const char *str, struct sockaddr *addr, struct sockaddr *mask) { struct addrinfo hints, *res = NULL; char *p = NULL, *sp, *ep; u_long prefixlen = 0; u_char *ap; int bitlen; /* slash */ if (mask && (p = strchr(str, '/')) != NULL) { if (!p[1]) return -1; ep = NULL; prefixlen = strtoul(p + 1, &ep, 10); if (*ep) return -1; sp = strdup(str); if (!sp) return -1; sp[p - str] = '\0'; str = sp; } else sp = NULL; memset(&hints, 0, sizeof(hints)); hints.ai_socktype = SOCK_DGRAM; /* dummy */ hints.ai_flags = AI_NUMERICHOST; if (getaddrinfo(str, "0", &hints, &res) != 0) return -1; if (res->ai_next) goto fail; memcpy(addr, res->ai_addr, res->ai_addrlen); if (!p) { freeaddrinfo(res); if (sp) free(sp); return 0; } switch (res->ai_family) { case AF_INET: ap = (u_char *) & ((struct sockaddr_in *) mask)->sin_addr; bitlen = 32; break; case AF_INET6: ap = (u_char *) & ((struct sockaddr_in6 *) mask)->sin6_addr; bitlen = 128; break; default: goto fail; } if (prefixlen > bitlen) goto fail; memset(mask, 0, addr->sa_len); mask->sa_len = addr->sa_len; mask->sa_family = addr->sa_family; memset(ap, 0xff, prefixlen / 8); if (prefixlen % 8) ap[prefixlen / 8] = (0xff00 >> (prefixlen % 8)) & 0xff; if (res) freeaddrinfo(res); if (sp) free(sp); return 1; fail: if (res) freeaddrinfo(res); if (sp) free(sp); return -1; } void xf_set(struct iovec *iov, int cnt, int len) { struct sadb_msg sm; int sd; sd = socket(PF_KEY, SOCK_RAW, PF_KEY_V2); if (sd < 0) { perror("socket"); if (errno == EPROTONOSUPPORT) fprintf(stderr, "Make sure your kernel is compiled with option KEY\n"); exit(1); } if (writev(sd, iov, cnt) != len) { perror("write"); exit(1); } if (read(sd, &sm, sizeof(sm)) != sizeof(sm)) { perror("read"); exit(1); } if (sm.sadb_msg_errno != 0) { /* XXX We need better error reporting than this */ errno = sm.sadb_msg_errno; perror("pfkey"); exit(1); } close(sd); } int x2i(char *s) { char ss[3]; ss[0] = s[0]; ss[1] = s[1]; ss[2] = 0; if (!isxdigit(s[0]) || !isxdigit(s[1])) { fprintf(stderr, "Keys should be specified in hex digits.\n"); exit(1); } return strtoul(ss, NULL, 16); } int isvalid(char *option, int type, int mode) { int i; for (i = sizeof(xf) / sizeof(transform) - 1; i >= 0; i--) if (!strcmp(option, xf[i].name) && (xf[i].flags & CMD_MASK) == type && (xf[i].flags & mode)) { goto gotit; } return 0; gotit: if (!strcmp(option, "des") || !strcmp(option, "skipjack")) fprintf(stderr, "Warning: use of %s is strongly discouraged due to" " cryptographic weaknesses\n", option); return xf[i].id; } void usage(void) { fprintf(stderr, "usage: ipsecadm [command] \n" "\tCommands: new esp, old esp, new ah, old ah, group, delspi, ip4, ipcomp,\n" "\t\t flow, flush, show, monitor\n" "\tPossible modifiers:\n" "\t -enc \t\t\tencryption algorithm\n" "\t -auth \t\t\tauthentication algorithm\n" "\t -comp \t\t\tcompression algorithm\n" "\t -src \t\t\tsource address to be used\n" "\t -halfiv\t\t\tuse 4-byte IV in old ESP\n" "\t -forcetunnel\t\t\tforce IP-in-IP encapsulation\n" "\t -udpencap \t\tenable ESP-in-UDP encapsulation\n" "\t -dst \t\t\tdestination address to be used\n" "\t -proto \t\t\tsecurity protocol\n" "\t -proxy \t\t\tproxy address to be used\n" "\t -spi \t\t\tSPI to be used\n" "\t -cpi \t\t\tCPI to be used\n" "\t -key \t\t\tkey material to be used\n" "\t -keyfile \t\tfile to read key material from\n" "\t -authkey \t\tkey material for auth in new esp\n" "\t -authkeyfile \t\tfile to read authkey material from\n" "\t -sport\t\t\tsource port for flow\n" "\t -dport\t\t\tdestination port for flow\n" "\t -transport \t\tprotocol number for flow\n" "\t -addr [ | ] subnets for flow\n" "\t -delete\t\t\tdelete specified flow\n" "\t -bypass\t\t\tpermit a flow through without IPsec\n" "\t -permit\t\t\tsame as bypass\n" "\t -deny\t\t\t\tcreate a deny-packets flow\n" "\t -use\t\t\t\tuse an SA for a flow if it exists\n" "\t -acquire\t\t\tsend unprotected while acquiring SA\n" "\t -require\t\t\trequire an SA for a flow, use key mgmt.\n" "\t -dontacq\t\t\trequire, without using key mgmt.\n" "\t -in\t\t\t\tspecify incoming-packet policy\n" "\t -out\t\t\t\tspecify outgoing-packet policy\n" "\t -[ah|esp|ip4|ipcomp]\t\tflush a particular protocol\n" "\t -srcid\t\t\tsource identity for flows\n" "\t -dstid\t\t\tdestination identity for flows\n" "\t -srcid_type\t\t\tsource identity type\n" "\t -dstid_type\t\t\tdestination identity type\n" "\talso: dst2, spi2, proto2\n" ); } int main(int argc, char *argv[]) { int auth = 0, enc = 0, klen = 0, alen = 0, mode = ESP_NEW, i = 0; int proto = IPPROTO_ESP, proto2 = IPPROTO_AH, sproto2 = SADB_SATYPE_AH; int dport = -1, sport = -1, tproto = -1; int srcset = 0, dstset = 0, dst2set = 0, proxyset = 0; int cnt = 0, bypass = 0, deny = 0, ipsec = 0, comp = 0; u_int32_t spi = SPI_LOCAL_USE, spi2 = SPI_LOCAL_USE; u_int32_t cpi = SPI_LOCAL_USE; union sockaddr_union *src, *dst, *dst2, *osrc, *odst, *osmask; union sockaddr_union *odmask, *proxy; u_char srcbuf[256], dstbuf[256], dst2buf[256], osrcbuf[256]; u_char odstbuf[256], osmaskbuf[256], odmaskbuf[256], proxybuf[256]; u_char *keyp = NULL, *authp = NULL; u_char *srcid = NULL, *dstid = NULL; struct protoent *tp; struct servent *svp; char *transportproto = NULL; struct sadb_msg smsg; struct sadb_sa sa, sa2; struct sadb_address sad1, sad2, sad3; /* src, dst, proxy */ struct sadb_address sad4, sad5; /* osrc, odst */ struct sadb_address sad6, sad7, sad8; /* osmask, odmask, dst2 */ struct sadb_ident sid1, sid2; struct sadb_key skey1, skey2; struct sadb_protocol sprotocol, sprotocol2; struct sadb_x_udpencap udpencap; /* Peer UDP Port */ u_char realkey[8192], realakey[8192]; struct iovec iov[30]; struct addrinfo hints, *res; if (argc < 2) { usage(); exit(1); } /* Zero out */ memset(&smsg, 0, sizeof(smsg)); memset(&sa, 0, sizeof(sa)); memset(&sa2, 0, sizeof(sa2)); memset(&skey1, 0, sizeof(skey1)); memset(&skey2, 0, sizeof(skey2)); memset(&sad1, 0, sizeof(sad1)); memset(&sad2, 0, sizeof(sad2)); memset(&sad3, 0, sizeof(sad3)); memset(&sad4, 0, sizeof(sad4)); memset(&sad5, 0, sizeof(sad5)); memset(&sad6, 0, sizeof(sad6)); memset(&sad7, 0, sizeof(sad7)); memset(&sad8, 0, sizeof(sad8)); memset(&sprotocol, 0, sizeof(sprotocol)); memset(&sprotocol2, 0, sizeof(sprotocol2)); memset(iov, 0, sizeof(iov)); memset(realkey, 0, sizeof(realkey)); memset(realakey, 0, sizeof(realakey)); memset(&sid1, 0, sizeof(sid1)); memset(&sid2, 0, sizeof(sid2)); memset(&udpencap, 0, sizeof(udpencap)); src = (union sockaddr_union *) srcbuf; dst = (union sockaddr_union *) dstbuf; dst2 = (union sockaddr_union *) dst2buf; osrc = (union sockaddr_union *) osrcbuf; odst = (union sockaddr_union *) odstbuf; osmask = (union sockaddr_union *) osmaskbuf; odmask = (union sockaddr_union *) odmaskbuf; proxy = (union sockaddr_union *) proxybuf; memset(srcbuf, 0, sizeof(srcbuf)); memset(dstbuf, 0, sizeof(dstbuf)); memset(dst2buf, 0, sizeof(dst2buf)); memset(osrcbuf, 0, sizeof(osrcbuf)); memset(odstbuf, 0, sizeof(odstbuf)); memset(osmaskbuf, 0, sizeof(osmaskbuf)); memset(odmaskbuf, 0, sizeof(odmaskbuf)); memset(proxybuf, 0, sizeof(proxybuf)); /* Initialize */ smsg.sadb_msg_version = PF_KEY_V2; smsg.sadb_msg_seq = 1; smsg.sadb_msg_pid = getpid(); smsg.sadb_msg_len = sizeof(smsg) / 8; /* Initialize */ sa.sadb_sa_exttype = SADB_EXT_SA; sa.sadb_sa_len = sizeof(sa) / 8; sa.sadb_sa_replay = 0; sa.sadb_sa_state = SADB_SASTATE_MATURE; sa2.sadb_sa_exttype = SADB_X_EXT_SA2; sa2.sadb_sa_len = sizeof(sa) / 8; sa2.sadb_sa_replay = 0; sa2.sadb_sa_state = SADB_SASTATE_MATURE; sid1.sadb_ident_len = sizeof(sid1) / 8; sid1.sadb_ident_exttype = SADB_EXT_IDENTITY_SRC; sid2.sadb_ident_len = sizeof(sid2) / 8; sid2.sadb_ident_exttype = SADB_EXT_IDENTITY_DST; sprotocol2.sadb_protocol_len = 1; sprotocol2.sadb_protocol_exttype = SADB_X_EXT_FLOW_TYPE; sprotocol2.sadb_protocol_direction = IPSP_DIRECTION_OUT; sprotocol2.sadb_protocol_flags = SADB_X_POLICYFLAGS_POLICY; sprotocol.sadb_protocol_exttype = SADB_X_EXT_PROTOCOL; sprotocol.sadb_protocol_len = 1; if (!strcmp(argv[1], "new") && argc > 3) { if (!strcmp(argv[2], "esp")) { mode = ESP_NEW; smsg.sadb_msg_type = SADB_ADD; smsg.sadb_msg_satype = SADB_SATYPE_ESP; } else if (!strcmp(argv[2], "ah")) { mode = AH_NEW; smsg.sadb_msg_type = SADB_ADD; smsg.sadb_msg_satype = SADB_SATYPE_AH; } else { fprintf(stderr, "%s: unexpected identifier %s\n", argv[0], argv[2]); exit(1); } i += 2; } else if (!strcmp(argv[1], "old") && argc > 3) { if (!strcmp(argv[2], "esp")) { mode = ESP_OLD; smsg.sadb_msg_type = SADB_ADD; smsg.sadb_msg_satype = SADB_SATYPE_ESP; sa.sadb_sa_flags |= SADB_X_SAFLAGS_RANDOMPADDING; sa.sadb_sa_flags |= SADB_X_SAFLAGS_NOREPLAY; } else if (!strcmp(argv[2], "ah")) { mode = AH_OLD; smsg.sadb_msg_type = SADB_ADD; smsg.sadb_msg_satype = SADB_SATYPE_AH; sa.sadb_sa_flags |= SADB_X_SAFLAGS_NOREPLAY; } else { fprintf(stderr, "%s: unexpected identifier %s\n", argv[0], argv[2]); exit(1); } i += 2; } else if (!strcmp(argv[1], "delspi")) { smsg.sadb_msg_type = SADB_DELETE; smsg.sadb_msg_satype = SADB_SATYPE_ESP; mode = DEL_SPI; i++; } else if (!strcmp(argv[1], "group")) { smsg.sadb_msg_type = SADB_X_GRPSPIS; smsg.sadb_msg_satype = SADB_SATYPE_ESP; mode = GRP_SPI; i++; } else if (!strcmp(argv[1], "flow")) { /* It may not be ADDFLOW, but never mind that for now */ smsg.sadb_msg_type = SADB_X_ADDFLOW; smsg.sadb_msg_satype = SADB_SATYPE_ESP; mode = FLOW; i++; } else if (!strcmp(argv[1], "flush")) { mode = FLUSH; smsg.sadb_msg_type = SADB_FLUSH; smsg.sadb_msg_satype = SADB_SATYPE_UNSPEC; i++; } else if (!strcmp(argv[1], "ip4")) { mode = ENC_IP; smsg.sadb_msg_type = SADB_ADD; smsg.sadb_msg_satype = SADB_X_SATYPE_IPIP; i++; } else if (!strcmp(argv[1], "ipcomp")) { mode = IPCOMP; smsg.sadb_msg_type = SADB_ADD; smsg.sadb_msg_satype = SADB_X_SATYPE_IPCOMP; i++; } else if (!strcmp(argv[1], "monitor")) { mode = MONITOR; i++; } else if (!strcmp(argv[1], "show")) { mode = SHOW; smsg.sadb_msg_satype = SADB_SATYPE_UNSPEC; i++; } else { fprintf(stderr, "%s: unknown command: %s\n", argv[0], argv[1]); usage(); exit(1); } for (i++; i < argc; i++) { if (argv[i][0] != '-') { fprintf(stderr, "%s: expected option, got %s\n", argv[0], argv[i]); exit(1); } if (!strcmp(argv[i] + 1, "enc") && enc == 0 && (i + 1 < argc)) { if ((enc = isvalid(argv[i + 1], XF_ENC, mode)) == 0) { fprintf(stderr, "%s: invalid encryption algorithm %s\n", argv[0], argv[i + 1]); exit(1); } skey1.sadb_key_exttype = SADB_EXT_KEY_ENCRYPT; sa.sadb_sa_encrypt = enc; i++; continue; } if (!strcmp(argv[i] + 1, "auth") && auth == 0 && (i + 1 < argc)) { if ((auth = isvalid(argv[i + 1], XF_AUTH, mode)) == 0) { fprintf(stderr, "%s: invalid auth algorithm %s\n", argv[0], argv[i + 1]); exit(1); } skey2.sadb_key_exttype = SADB_EXT_KEY_AUTH; sa.sadb_sa_auth = auth; i++; continue; } if (!strcmp(argv[i] + 1, "comp") && comp == 0 && (i + 1 < argc)) { if ((comp = isvalid(argv[i + 1], XF_COMP, mode)) == 0) { fprintf(stderr, "%s: invalid comp algorithm %s\n", argv[0], argv[i + 1]); exit(1); } /* * Use encryption algo slot to store compression algo * since we cannot modify sadb_sa */ sa.sadb_sa_encrypt = comp; i++; continue; } if (!strcmp(argv[i] + 1, "key") && keyp == NULL && (i + 1 < argc)) { if (mode & (AH_NEW | AH_OLD)) { authp = argv[++i]; alen = strlen(authp) / 2; } else { keyp = argv[++i]; klen = strlen(keyp) / 2; } continue; } if (!strcmp(argv[i] + 1, "keyfile") && keyp == NULL && (i + 1 < argc)) { struct stat sb; u_char *pptr; int fd; if (stat(argv[++i], &sb) < 0) { perror("stat()"); exit(1); } if ((sb.st_size > KEYSIZE_LIMIT) || (sb.st_size == 0)) { fprintf(stderr, "%s: file %s is too %s (must be between 1 and %d bytes).\nb", argv[0], argv[i], sb.st_size ? "large" : "small", KEYSIZE_LIMIT); exit(1); } pptr = malloc(sb.st_size); if (pptr == NULL) { perror("malloc()"); exit(1); } fd = open(argv[i], O_RDONLY); if (fd < 0) { perror("open()"); exit(1); } if (read(fd, pptr, sb.st_size) < sb.st_size) { perror("read()"); exit(1); } close(fd); if (mode & (AH_NEW | AH_OLD)) { authp = pptr; alen = sb.st_size / 2; } else { keyp = pptr; klen = sb.st_size / 2; } continue; } if (!strcmp(argv[i] + 1, "authkeyfile") && authp == NULL && (i + 1 < argc)) { struct stat sb; int fd; if (!(mode & ESP_NEW)) { fprintf(stderr, "%s: invalid option %s for selected mode\n", argv[0], argv[i]); exit(1); } if (stat(argv[++i], &sb) < 0) { perror("stat()"); exit(1); } if ((sb.st_size > KEYSIZE_LIMIT) || (sb.st_size == 0)) { fprintf(stderr, "%s: file %s is too %s (must be between 1 and %d bytes).\n", argv[0], argv[i], sb.st_size ? "large" : "small", KEYSIZE_LIMIT); exit(1); } authp = malloc(sb.st_size); if (authp == NULL) { perror("malloc()"); exit(1); } fd = open(argv[i], O_RDONLY); if (fd < 0) { perror("open()"); exit(1); } if (read(fd, authp, sb.st_size) < sb.st_size) { perror("read()"); exit(1); } close(fd); alen = sb.st_size / 2; continue; } if (!strcmp(argv[i] + 1, "authkey") && authp == NULL && (i + 1 < argc)) { if (!(mode & ESP_NEW)) { fprintf(stderr, "%s: invalid option %s for selected mode\n", argv[0], argv[i]); exit(1); } authp = argv[++i]; alen = strlen(authp) / 2; continue; } if (!strcmp(argv[i] + 1, "iv") && (i + 1 < argc)) { if (mode & (AH_OLD | AH_NEW)) { fprintf(stderr, "%s: invalid option %s with auth\n", argv[0], argv[i]); exit(1); } fprintf(stderr, "%s: Warning: option iv has been deprecated\n", argv[0]); /* Horrible hack */ if (mode & ESP_OLD) if (strlen(argv[i + 2]) == 4) sa.sadb_sa_flags |= SADB_X_SAFLAGS_HALFIV; i++; continue; } if ((iscmd(mode, FLUSH) || iscmd(mode, SHOW)) && smsg.sadb_msg_satype == SADB_SATYPE_UNSPEC) { if (!strcmp(argv[i] + 1, "esp")) smsg.sadb_msg_satype = SADB_SATYPE_ESP; else if (!strcmp(argv[i] + 1, "ah")) smsg.sadb_msg_satype = SADB_SATYPE_AH; else if (!strcmp(argv[i] + 1, "ip4")) smsg.sadb_msg_satype = SADB_X_SATYPE_IPIP; else if (!strcmp(argv[i] + 1, "ipcomp")) smsg.sadb_msg_satype = SADB_X_SATYPE_IPCOMP; else { fprintf(stderr, "%s: invalid SA type %s\n", argv[0], argv[i + 1]); exit(1); } i++; continue; } if (!strcmp(argv[i] + 1, "spi") && iscmd(mode, FLOW)) { fprintf(stderr, "%s: use of flag \"-spi\" is deprecated with " "flow creation or deletion\n", argv[0]); i++; continue; } if (!strcmp(argv[i] + 1, "spi") && spi == SPI_LOCAL_USE && (i + 1 < argc) && !bypass && !deny) { spi = strtoul(argv[i + 1], NULL, 16); if (spi >= SPI_RESERVED_MIN && spi <= SPI_RESERVED_MAX) { fprintf(stderr, "%s: invalid spi %s\n", argv[0], argv[i + 1]); exit(1); } sa.sadb_sa_spi = htonl(spi); i++; continue; } if (!strcmp(argv[i] + 1, "spi2") && spi2 == SPI_LOCAL_USE && iscmd(mode, GRP_SPI) && (i + 1 < argc)) { spi2 = strtoul(argv[i + 1], NULL, 16); if (spi2 == SPI_LOCAL_USE || (spi2 >= SPI_RESERVED_MIN && spi2 <= SPI_RESERVED_MAX)) { fprintf(stderr, "%s: invalid spi2 %s\n", argv[0], argv[i + 1]); exit(1); } sa2.sadb_sa_spi = htonl(spi2); i++; continue; } if (!strcmp(argv[i] + 1, "cpi") && cpi == SPI_LOCAL_USE && (i + 1 < argc) && !bypass && !deny) { cpi = strtoul(argv[i + 1], NULL, 16); if (cpi >= CPI_RESERVED_MIN && (cpi <= CPI_RESERVED_MAX || cpi >= CPI_PRIVATE_MAX)) { fprintf(stderr, "%s: invalid cpi %s\n", argv[0], argv[i + 1]); exit(1); } sa.sadb_sa_spi = ntohl(cpi); i++; continue; } if (!strcmp(argv[i] + 1, "dst2") && iscmd(mode, GRP_SPI) && (i + 1 < argc)) { sad8.sadb_address_exttype = SADB_X_EXT_DST2; memset(&hints, 0, sizeof(hints)); hints.ai_socktype = SOCK_DGRAM; /*dummy*/ #ifdef INET6 if (hints.ai_family = AF_INET6, getaddrinfo(argv[i + 1], "0", &hints, &res) == 0) { if (res->ai_next) { fprintf(stderr, "%s: destination address2 %s resolves to multiple addresses\n", argv[0], argv[i + 1]); exit(1); } if (res->ai_addrlen != sizeof(dst2->sin6)) { fprintf(stderr, "%s: destination address2 %s resolves to unexpected address\n", argv[0], argv[i + 1]); exit(1); } memcpy(&dst2->sin6, res->ai_addr, sizeof(dst2->sin6)); dst2set = 1; freeaddrinfo(res); } else #endif if (hints.ai_family = AF_INET, getaddrinfo(argv[i + 1], "0", &hints, &res) == 0) { if (res->ai_next) { fprintf(stderr, "%s: destination address2 %s resolves to multiple addresses\n", argv[0], argv[i + 1]); exit(1); } if (res->ai_addrlen != sizeof(dst2->sin)) { fprintf(stderr, "%s: destination address2 %s resolves to unexpected address\n", argv[0], argv[i + 1]); exit(1); } memcpy(&dst2->sin, res->ai_addr, sizeof(dst2->sin)); dst2set = 1; freeaddrinfo(res); } if (dst2set == 0) { fprintf(stderr, "%s: Warning: destination address2 %s is not valid\n", argv[0], argv[i + 1]); exit(1); } i++; continue; } if (!strcmp(argv[i] + 1, "src") && (i + 1 < argc)) { sad1.sadb_address_exttype = SADB_EXT_ADDRESS_SRC; memset(&hints, 0, sizeof(hints)); hints.ai_socktype = SOCK_DGRAM; /*dummy*/ #ifdef INET6 if (hints.ai_family = AF_INET6, getaddrinfo(argv[i + 1], "0", &hints, &res) == 0) { if (res->ai_next) { fprintf(stderr, "%s: source address %s resolves to multiple addresses\n", argv[0], argv[i + 1]); exit(1); } if (res->ai_addrlen != sizeof(src->sin6)) { fprintf(stderr, "%s: source address %s resolves to unexpected address\n", argv[0], argv[i + 1]); exit(1); } memcpy(&src->sin6, res->ai_addr, sizeof(src->sin6)); srcset = 1; freeaddrinfo(res); sad1.sadb_address_len = (sizeof(sad1) + ROUNDUP(sizeof(struct sockaddr_in6))) / 8; } else #endif if (hints.ai_family = AF_INET, getaddrinfo(argv[i + 1], "0", &hints, &res) == 0) { if (res->ai_next) { fprintf(stderr, "%s: source address %s resolves to multiple addresses\n", argv[0], argv[i + 1]); exit(1); } if (res->ai_addrlen != sizeof(src->sin)) { fprintf(stderr, "%s: source address %s resolves to unexpected address\n", argv[0], argv[i + 1]); exit(1); } memcpy(&src->sin, res->ai_addr, sizeof(src->sin)); srcset = 1; freeaddrinfo(res); sad1.sadb_address_len = (sizeof(sad1) + ROUNDUP(sizeof(struct sockaddr_in))) / 8; } if (srcset == 0) { fprintf(stderr, "%s: Warning: source address %s is not valid\n", argv[0], argv[i + 1]); exit(1); } i++; continue; } if (!strcmp(argv[i] + 1, "proxy") && (i + 1 < argc) && !deny && !bypass && !ipsec) { sad3.sadb_address_exttype = SADB_EXT_ADDRESS_PROXY; memset(&hints, 0, sizeof(hints)); hints.ai_socktype = SOCK_DGRAM; /*dummy*/ #ifdef INET6 if (hints.ai_family = AF_INET6, getaddrinfo(argv[i + 1], "0", &hints, &res) == 0) { if (res->ai_next) { fprintf(stderr, "%s: source address %s resolves to multiple addresses\n", argv[0], argv[i + 1]); exit(1); } if (res->ai_addrlen != sizeof(proxy->sin6)) { fprintf(stderr, "%s: source address %s resolves to unexpected address\n", argv[0], argv[i + 1]); exit(1); } memcpy(&proxy->sin6, res->ai_addr, sizeof(proxy->sin6)); proxyset = 1; freeaddrinfo(res); sad3.sadb_address_len = (sizeof(sad3) + ROUNDUP(sizeof(struct sockaddr_in6))) / 8; } else #endif if (hints.ai_family = AF_INET, getaddrinfo(argv[i + 1], "0", &hints, &res) == 0) { if (res->ai_next) { fprintf(stderr, "%s: source address %s resolves to multiple addresses\n", argv[0], argv[i + 1]); exit(1); } if (res->ai_addrlen != sizeof(proxy->sin)) { fprintf(stderr, "%s: source address %s resolves to unexpected address\n", argv[0], argv[i + 1]); exit(1); } memcpy(&proxy->sin, res->ai_addr, sizeof(proxy->sin)); proxyset = 1; freeaddrinfo(res); sad3.sadb_address_len = (sizeof(sad3) + ROUNDUP(sizeof(struct sockaddr_in))) / 8; } if (proxyset == 0) { fprintf(stderr, "%s: Warning: proxy address %s is not valid\n", argv[0], argv[i + 1]); exit(1); } i++; continue; } if (!strcmp(argv[i] + 1, "newpadding")) { fprintf(stderr, "%s: Warning: option newpadding has been deprecated\n", argv[0]); continue; } if (!strcmp(argv[i] + 1, "in") && iscmd(mode, FLOW)) { sprotocol2.sadb_protocol_direction = IPSP_DIRECTION_IN; continue; } if (!strcmp(argv[i] + 1, "out") && iscmd(mode, FLOW)) { sprotocol2.sadb_protocol_direction = IPSP_DIRECTION_OUT; continue; } if (!strcmp(argv[i] + 1, "forcetunnel") && isencauth(mode)) { sa.sadb_sa_flags |= SADB_X_SAFLAGS_TUNNEL; continue; } if (!strcmp(argv[i] + 1, "udpencap") && udpencap.sadb_x_udpencap_port == 0 && (i + 1 < argc)) { if (!(mode & ESP_NEW)) { fprintf(stderr, "%s: option udpencap can " "be used only with new ESP\n", argv[0]); exit(1); } sa.sadb_sa_flags |= SADB_X_SAFLAGS_UDPENCAP; udpencap.sadb_x_udpencap_exttype = SADB_X_EXT_UDPENCAP; udpencap.sadb_x_udpencap_len = sizeof(udpencap) / 8; udpencap.sadb_x_udpencap_port = strtoul(argv[i + 1], NULL, 10); udpencap.sadb_x_udpencap_port = htons(udpencap.sadb_x_udpencap_port); udpencap.sadb_x_udpencap_reserved = 0; i++; continue; } if (!strcmp(argv[i] + 1, "halfiv")) { if (!(mode & ESP_OLD)) { fprintf(stderr, "%s: option halfiv can be used only with old ESP\n", argv[0]); exit(1); } sa.sadb_sa_flags |= SADB_X_SAFLAGS_HALFIV; continue; } if (!strcmp(argv[i] + 1, "delete") && iscmd(mode, FLOW)) { smsg.sadb_msg_type = SADB_X_DELFLOW; continue; } if (!strcmp(argv[i] + 1, "local") && iscmd(mode, FLOW)) { fprintf(stderr, "%s: Warning: option local has been deprecated\n", argv[0]); continue; } if (!strcmp(argv[i] + 1, "tunnel") && (isencauth(mode) || mode == ENC_IP) && (i + 2 < argc)) { i += 2; sa.sadb_sa_flags |= SADB_X_SAFLAGS_TUNNEL; continue; } if (!strcmp(argv[i] + 1, "srcid") && (iscmd(mode, FLOW) || isencauth(mode)) && (i + 1 < argc)) { int len = ROUNDUP(strlen(argv[i + 1]) + 1); if (srcid != NULL) { fprintf(stderr, "%s: srcid specified multiple times\n", argv[0]); exit(1); } srcid = calloc(len, sizeof(char)); if (srcid == NULL) { fprintf(stderr, "%s: malloc failed\n", argv[0]); exit(1); } strlcpy(srcid, argv[i + 1], len); sid1.sadb_ident_len += ROUNDUP(strlen(srcid) + 1) / sizeof(u_int64_t); i++; continue; } if (!strcmp(argv[i] + 1, "dstid") && (iscmd(mode, FLOW) || isencauth(mode)) && (i + 1 < argc)) { int len = ROUNDUP(strlen(argv[i + 1]) + 1); if (dstid != NULL) { fprintf(stderr, "%s: dstid specified multiple times\n", argv[0]); exit(1); } dstid = calloc(len, sizeof(char)); if (dstid == NULL) { fprintf(stderr, "%s: malloc failed\n", argv[0]); exit(1); } strlcpy(dstid, argv[i + 1], len); sid2.sadb_ident_len += ROUNDUP(strlen(dstid) + 1) / sizeof(u_int64_t); i++; continue; } if (!strcmp(argv[i] + 1, "srcid_type") && (iscmd(mode, FLOW) || isencauth(mode)) && (i + 1 < argc)) { if (sid1.sadb_ident_type != 0) { fprintf(stderr, "%s: srcid_type specified multiple times\n", argv[0]); exit(1); } if (!strcmp(argv[i + 1], "prefix")) sid1.sadb_ident_type = SADB_IDENTTYPE_PREFIX; else if (!strcmp(argv[i + 1], "fqdn")) sid1.sadb_ident_type = SADB_IDENTTYPE_FQDN; else if (!strcmp(argv[i + 1], "ufqdn")) sid1.sadb_ident_type = SADB_IDENTTYPE_USERFQDN; else { fprintf(stderr, "%s: unknown identity type \"%s\"\n", argv[0], argv[i + 1]); exit(1); } i++; continue; } if (!strcmp(argv[i] + 1, "dstid_type") && (iscmd(mode, FLOW) || isencauth(mode)) && (i + 1 < argc)) { if (sid2.sadb_ident_type != 0) { fprintf(stderr, "%s: dstid_type specified multiple times\n", argv[0]); exit(1); } if (!strcmp(argv[i + 1], "prefix")) sid2.sadb_ident_type = SADB_IDENTTYPE_PREFIX; else if (!strcmp(argv[i + 1], "fqdn")) sid2.sadb_ident_type = SADB_IDENTTYPE_FQDN; else if (!strcmp(argv[i + 1], "ufqdn")) sid2.sadb_ident_type = SADB_IDENTTYPE_USERFQDN; else { fprintf(stderr, "%s: unknown identity type \"%s\"\n", argv[0], argv[i + 1]); exit(1); } i++; continue; } if (!strcmp(argv[i] + 1, "addr") && iscmd(mode, FLOW) && (i + 1 < argc)) { int advance; sad4.sadb_address_exttype = SADB_X_EXT_SRC_FLOW; sad5.sadb_address_exttype = SADB_X_EXT_DST_FLOW; sad6.sadb_address_exttype = SADB_X_EXT_SRC_MASK; sad7.sadb_address_exttype = SADB_X_EXT_DST_MASK; switch (addrparse(argv[i + 1], &osrc->sa, &osmask->sa)) { case 0: advance = 4; if (i + 4 >= argc) goto argfail; if (addrparse(argv[i + 2], &osmask->sa, NULL) != 0 || addrparse(argv[i + 3], &odst->sa, NULL) != 0 || addrparse(argv[i + 4], &odmask->sa, NULL) != 0) { fprintf(stderr, "%s: Invalid address on -addr\n", argv[0]); exit(1); } break; case 1: advance = 2; if (i + 2 >= argc) goto argfail; if (addrparse(argv[i + 2], &odst->sa, &odmask->sa) != 1) { fprintf(stderr, "%s: Invalid address on -addr\n", argv[0]); exit(1); } break; default: fprintf(stderr, "%s: Invalid address %s on -addr\n", argv[0], argv[i + 1]); goto argfail; } if (osrc->sa.sa_family != odst->sa.sa_family) { fprintf(stderr, "%s: Mixed address families specified in addr\n", argv[0]); exit(1); } sad4.sadb_address_len = (sizeof(sad4) + ROUNDUP(osrc->sa.sa_len)) / 8; sad5.sadb_address_len = (sizeof(sad5) + ROUNDUP(odst->sa.sa_len)) / 8; sad6.sadb_address_len = (sizeof(sad6) + ROUNDUP(osmask->sa.sa_len)) / 8; sad7.sadb_address_len = (sizeof(sad7) + ROUNDUP(odmask->sa.sa_len)) / 8; i += advance; continue; } if ((!strcmp(argv[i] + 1, "bypass") || !strcmp(argv[i] + 1, "permit")) && iscmd(mode, FLOW) && !deny && !ipsec && !bypass) { /* Setup everything for a bypass flow */ bypass = 1; sprotocol2.sadb_protocol_proto = SADB_X_FLOW_TYPE_BYPASS; continue; } if (!strcmp(argv[i] + 1, "deny") && iscmd(mode, FLOW) && !ipsec && !deny && !bypass) { /* Setup everything for a deny flow */ deny = 1; sprotocol2.sadb_protocol_proto = SADB_X_FLOW_TYPE_DENY; continue; } if (!strcmp(argv[i] + 1, "use") && iscmd(mode, FLOW) && !deny && !bypass && !ipsec) { ipsec = 1; sprotocol2.sadb_protocol_proto = SADB_X_FLOW_TYPE_USE; continue; } if (!strcmp(argv[i] + 1, "acquire") && iscmd(mode, FLOW) && !deny && !bypass && !ipsec) { ipsec = 1; sprotocol2.sadb_protocol_proto = SADB_X_FLOW_TYPE_ACQUIRE; continue; } if (!strcmp(argv[i] + 1, "require") && iscmd(mode, FLOW) && !deny && !bypass && !ipsec) { ipsec = 1; sprotocol2.sadb_protocol_proto = SADB_X_FLOW_TYPE_REQUIRE; continue; } if (!strcmp(argv[i] + 1, "dontacq") && iscmd(mode, FLOW) && !deny && !bypass && !ipsec) { ipsec = 1; sprotocol2.sadb_protocol_proto = SADB_X_FLOW_TYPE_DONTACQ; continue; } if (!strcmp(argv[i] + 1, "transport") && iscmd(mode, FLOW) && (i + 1 < argc)) { if (isalpha(argv[i + 1][0])) { tp = getprotobyname(argv[i + 1]); if (tp == NULL) { fprintf(stderr, "%s: unknown protocol %s\n", argv[0], argv[i + 1]); exit(1); } tproto = tp->p_proto; transportproto = argv[i + 1]; } else { tproto = atoi(argv[i + 1]); tp = getprotobynumber(tproto); if (tp == NULL) transportproto = "UNKNOWN"; else transportproto = tp->p_name; } sprotocol.sadb_protocol_len = 1; sprotocol.sadb_protocol_exttype = SADB_X_EXT_PROTOCOL; sprotocol.sadb_protocol_proto = tproto; i++; continue; } if (!strcmp(argv[i] + 1, "sport") && iscmd(mode, FLOW) && (i + 1 < argc)) { if (isalpha(argv[i + 1][0])) { svp = getservbyname(argv[i + 1], transportproto); if (svp == NULL) { fprintf(stderr, "%s: unknown service port %s for protocol %s\n", argv[0], argv[i + 1], transportproto); exit(1); } sport = svp->s_port; } else sport = htons(atoi(argv[i + 1])); i++; continue; } if (!strcmp(argv[i] + 1, "dport") && iscmd(mode, FLOW) && (i + 1 < argc)) { if (isalpha(argv[i + 1][0])) { svp = getservbyname(argv[i + 1], transportproto); if (svp == NULL) { fprintf(stderr, "%s: unknown service port %s for protocol %s\n", argv[0], argv[i + 1], transportproto); exit(1); } dport = svp->s_port; } else dport = htons(atoi(argv[i + 1])); i++; continue; } if (!strcmp(argv[i] + 1, "dst") && (i + 1 < argc) && !bypass && !deny) { sad2.sadb_address_exttype = SADB_EXT_ADDRESS_DST; memset(&hints, 0, sizeof(hints)); hints.ai_socktype = SOCK_DGRAM; /*dummy*/ #ifdef INET6 if (hints.ai_family = AF_INET6, getaddrinfo(argv[i + 1], "0", &hints, &res) == 0) { if (res->ai_next) { fprintf(stderr, "%s: destination address %s resolves to multiple addresses\n", argv[0], argv[i + 1]); exit(1); } if (res->ai_addrlen != sizeof(dst->sin6)) { fprintf(stderr, "%s: destination address %s resolves to unexpected address\n", argv[0], argv[i + 1]); exit(1); } memcpy(&dst->sin6, res->ai_addr, sizeof(dst->sin6)); dstset = 1; freeaddrinfo(res); sad2.sadb_address_len = (sizeof(sad2) + ROUNDUP(sizeof(struct sockaddr_in6))) / 8; } else #endif if (hints.ai_family = AF_INET, getaddrinfo(argv[i + 1], "0", &hints, &res) == 0) { if (res->ai_next) { fprintf(stderr, "%s: destination address %s resolves to multiple addresses\n", argv[0], argv[i + 1]); exit(1); } if (res->ai_addrlen != sizeof(dst->sin)) { fprintf(stderr, "%s: destination address %s resolves to unexpected address\n", argv[0], argv[i + 1]); exit(1); } memcpy(&dst->sin, res->ai_addr, sizeof(dst->sin)); dstset = 1; freeaddrinfo(res); sad2.sadb_address_len = (sizeof(sad2) + ROUNDUP(sizeof(struct sockaddr_in))) / 8; } if (dstset == 0) { fprintf(stderr, "%s: Warning: destination address %s is not valid\n", argv[0], argv[i + 1]); exit(1); } i++; continue; } if (!strcmp(argv[i] + 1, "proto2") && iscmd(mode, GRP_SPI) && (i + 1 < argc)) { if (isalpha(argv[i + 1][0])) { if (!strcasecmp(argv[i + 1], "esp")) { sprotocol.sadb_protocol_proto = sproto2 = SADB_SATYPE_ESP; proto2 = IPPROTO_ESP; } else if (!strcasecmp(argv[i + 1], "ah")) { sprotocol.sadb_protocol_proto = sproto2 = SADB_SATYPE_AH; proto2 = IPPROTO_AH; } else if (!strcasecmp(argv[i + 1], "ip4")) { sprotocol.sadb_protocol_proto = sproto2 = SADB_X_SATYPE_IPIP; proto2 = IPPROTO_IPIP; } else if (!strcasecmp(argv[i + 1], "ipcomp")) { sprotocol.sadb_protocol_proto = sproto2 = SADB_X_SATYPE_IPCOMP; } else { fprintf(stderr, "%s: unknown security protocol2 type %s\n", argv[0], argv[i + 1]); exit(1); } } else { proto2 = atoi(argv[i + 1]); if (proto2 != IPPROTO_ESP && proto2 != IPPROTO_AH && proto2 != IPPROTO_IPIP && proto2 != IPPROTO_IPCOMP) { fprintf(stderr, "%s: unknown security protocol2 %d\n", argv[0], proto2); exit(1); } if (proto2 == IPPROTO_ESP) sprotocol.sadb_protocol_proto = sproto2 = SADB_SATYPE_ESP; else if (proto2 == IPPROTO_AH) sprotocol.sadb_protocol_proto = sproto2 = SADB_SATYPE_AH; else if (proto2 == IPPROTO_IPIP) sprotocol.sadb_protocol_proto = sproto2 = SADB_X_SATYPE_IPIP; else if (proto2 == IPPROTO_IPCOMP) sprotocol.sadb_protocol_proto = sproto2 = SADB_X_SATYPE_IPCOMP; } i++; continue; } if (!strcmp(argv[i] + 1, "proto") && (i + 1 < argc) && ((iscmd(mode, FLOW) && !bypass && !deny) || iscmd(mode, DEL_SPI) || iscmd(mode, GRP_SPI))) { if (isalpha(argv[i + 1][0])) { if (!strcasecmp(argv[i + 1], "esp")) { smsg.sadb_msg_satype = SADB_SATYPE_ESP; proto = IPPROTO_ESP; } else if (!strcasecmp(argv[i + 1], "ah")) { smsg.sadb_msg_satype = SADB_SATYPE_AH; proto = IPPROTO_AH; } else if (!strcasecmp(argv[i + 1], "ip4")) { smsg.sadb_msg_satype = SADB_X_SATYPE_IPIP; proto = IPPROTO_IPIP; } else if (!strcasecmp(argv[i + 1], "ipcomp")) { smsg.sadb_msg_satype = SADB_X_SATYPE_IPCOMP; proto = IPPROTO_IPCOMP; } else { fprintf(stderr, "%s: unknown security protocol type %s\n", argv[0], argv[i + 1]); exit(1); } } else { proto = atoi(argv[i + 1]); if (proto != IPPROTO_ESP && proto != IPPROTO_AH && proto != IPPROTO_IPIP && proto != IPPROTO_IPCOMP) { fprintf(stderr, "%s: unknown security protocol %d\n", argv[0], proto); exit(1); } if (proto == IPPROTO_ESP) smsg.sadb_msg_satype = SADB_SATYPE_ESP; else if (proto == IPPROTO_AH) smsg.sadb_msg_satype = SADB_SATYPE_AH; else if (proto == IPPROTO_IPIP) smsg.sadb_msg_satype = SADB_X_SATYPE_IPIP; else if (proto == IPPROTO_IPCOMP) smsg.sadb_msg_satype = SADB_X_SATYPE_IPCOMP; } i++; continue; } /* No match */ argfail: fprintf(stderr, "%s: Unknown, invalid, or duplicated option: %s\n", argv[0], argv[i]); exit(1); } if (iscmd(mode, SHOW)) { ipsecadm_show(smsg.sadb_msg_satype); exit(0); } else if (iscmd(mode, MONITOR)) { ipsecadm_monitor(); exit(0); } /* Sanity checks */ if ((mode & (ESP_NEW | ESP_OLD)) && enc == 0 && auth == 0) { fprintf(stderr, "%s: no encryption or authentication algorithm " "specified\n", argv[0]); exit(1); } if (iscmd(mode, GRP_SPI) && spi2 == SPI_LOCAL_USE) { fprintf(stderr, "%s: no SPI2 specified\n", argv[0]); exit(1); } if ((mode & (AH_NEW | AH_OLD)) && auth == 0) { fprintf(stderr, "%s: no authentication algorithm specified\n", argv[0]); exit(1); } if (iscmd(mode, IPCOMP) && comp == 0) { fprintf(stderr, "%s: no compression algorithm specified\n", argv[0]); exit(1); } if ((srcid != NULL) && (sid1.sadb_ident_type == 0)) { fprintf(stderr, "%s: srcid_type not specified\n", argv[0]); exit(1); } if ((dstid != NULL) && (sid2.sadb_ident_type == 0)) { fprintf(stderr, "%s: dstid_type not specified\n", argv[0]); exit(1); } if ((srcid == NULL) && (sid1.sadb_ident_type != 0)) { fprintf(stderr, "%s: srcid_type specified, but no srcid given\n", argv[0]); exit(1); } if ((dstid == NULL) && (sid2.sadb_ident_type != 0)) { fprintf(stderr, "%s: dstid_type specified, but no dstid given\n", argv[0]); exit(1); } if (((mode & (ESP_NEW | ESP_OLD)) && enc && keyp == NULL) || ((mode & (AH_NEW | AH_OLD)) && authp == NULL)) { fprintf(stderr, "%s: no key material specified\n", argv[0]); exit(1); } if ((mode & ESP_NEW) && auth && authp == NULL) { fprintf(stderr, "%s: no auth key material specified\n", argv[0]); exit(1); } if (spi == SPI_LOCAL_USE && !iscmd(mode, FLUSH) && !iscmd(mode, FLOW) && !iscmd(mode, IPCOMP)) { fprintf(stderr, "%s: no SPI specified\n", argv[0]); exit(1); } if (iscmd(mode, IPCOMP) && cpi == SPI_LOCAL_USE) { fprintf(stderr, "%s: no CPI specified\n", argv[0]); exit(1); } if ((isencauth(mode) || iscmd(mode, ENC_IP)) && !srcset) { fprintf(stderr, "%s: no source address specified\n", argv[0]); exit(1); } if (!dstset && !iscmd(mode, FLUSH) && !iscmd(mode, FLOW)) { fprintf(stderr, "%s: no destination address for the SA specified\n", argv[0]); exit(1); } if (iscmd(mode, FLOW) && (sprotocol.sadb_protocol_proto == 0) && (odst->sin.sin_port || osrc->sin.sin_port)) { fprintf(stderr, "%s: no transport protocol supplied with" " source/destination ports\n", argv[0]); exit(1); } if (iscmd(mode, GRP_SPI) && !dst2set) { fprintf(stderr, "%s: no destination address2 specified\n", argv[0]); exit(1); } if ((klen > 2 * 8100) || (alen > 2 * 8100)) { fprintf(stderr, "%s: key too long\n", argv[0]); exit(1); } if (iscmd(mode, FLOW) && proto == IPPROTO_IPCOMP) { sprotocol2.sadb_protocol_proto = SADB_X_FLOW_TYPE_USE; } if (keyp != NULL) { for (i = 0; i < klen; i++) realkey[i] = x2i(keyp + 2 * i); } if (authp != NULL) { for (i = 0; i < alen; i++) realakey[i] = x2i(authp + 2 * i); } /* message header */ iov[cnt].iov_base = &smsg; iov[cnt++].iov_len = sizeof(smsg); if (isencauth(mode)) { /* SA header */ iov[cnt].iov_base = &sa; iov[cnt++].iov_len = sizeof(sa); smsg.sadb_msg_len += sa.sadb_sa_len; /* Destination address header */ iov[cnt].iov_base = &sad2; iov[cnt++].iov_len = sizeof(sad2); /* Destination address */ iov[cnt].iov_base = dst; iov[cnt++].iov_len = ROUNDUP(dst->sa.sa_len); smsg.sadb_msg_len += sad2.sadb_address_len; if (srcid) { iov[cnt].iov_base = &sid1; iov[cnt++].iov_len = sizeof(sid1); /* SRC identity */ iov[cnt].iov_base = srcid; iov[cnt++].iov_len = ROUNDUP(strlen(srcid) + 1); smsg.sadb_msg_len += sid1.sadb_ident_len; } if (dstid) { iov[cnt].iov_base = &sid2; iov[cnt++].iov_len = sizeof(sid2); /* DST identity */ iov[cnt].iov_base = dstid; iov[cnt++].iov_len = ROUNDUP(strlen(dstid) + 1); smsg.sadb_msg_len += sid2.sadb_ident_len; } if (sad1.sadb_address_exttype) { /* Source address header */ iov[cnt].iov_base = &sad1; iov[cnt++].iov_len = sizeof(sad1); /* Source address */ iov[cnt].iov_base = src; iov[cnt++].iov_len = ROUNDUP(src->sa.sa_len); smsg.sadb_msg_len += sad1.sadb_address_len; } if (proxy->sa.sa_len) { /* Proxy address header */ iov[cnt].iov_base = &sad3; iov[cnt++].iov_len = sizeof(sad3); /* Proxy address */ iov[cnt].iov_base = proxy; iov[cnt++].iov_len = ROUNDUP(proxy->sa.sa_len); smsg.sadb_msg_len += sad3.sadb_address_len; } if (keyp) { /* Key header */ iov[cnt].iov_base = &skey1; iov[cnt++].iov_len = sizeof(skey1); /* Key */ iov[cnt].iov_base = realkey; iov[cnt++].iov_len = ((klen + 7) / 8) * 8; skey1.sadb_key_exttype = SADB_EXT_KEY_ENCRYPT; skey1.sadb_key_len = (sizeof(skey1) + ((klen + 7) / 8) * 8) / 8; skey1.sadb_key_bits = 8 * klen; smsg.sadb_msg_len += skey1.sadb_key_len; } if (authp) { /* Auth key header */ iov[cnt].iov_base = &skey2; iov[cnt++].iov_len = sizeof(skey2); /* Auth key */ iov[cnt].iov_base = realakey; iov[cnt++].iov_len = ((alen + 7) / 8) * 8; skey2.sadb_key_exttype = SADB_EXT_KEY_AUTH; skey2.sadb_key_len = (sizeof(skey2) + ((alen + 7) / 8) * 8) / 8; skey2.sadb_key_bits = 8 * alen; smsg.sadb_msg_len += skey2.sadb_key_len; } if (sa.sadb_sa_flags & SADB_X_SAFLAGS_UDPENCAP) { iov[cnt].iov_base = &udpencap; iov[cnt++].iov_len = sizeof(udpencap); smsg.sadb_msg_len += udpencap.sadb_x_udpencap_len; } } else { switch (mode & CMD_MASK) { case GRP_SPI: /* SA header */ iov[cnt].iov_base = &sa; iov[cnt++].iov_len = sizeof(sa); smsg.sadb_msg_len += sa.sadb_sa_len; /* Destination address header */ iov[cnt].iov_base = &sad2; iov[cnt++].iov_len = sizeof(sad2); /* Destination address */ iov[cnt].iov_base = dst; iov[cnt++].iov_len = ROUNDUP(dst->sa.sa_len); smsg.sadb_msg_len += sad2.sadb_address_len; /* SA header */ iov[cnt].iov_base = &sa2; iov[cnt++].iov_len = sizeof(sa2); smsg.sadb_msg_len += sa2.sadb_sa_len; /* Destination2 address header */ iov[cnt].iov_base = &sad8; iov[cnt++].iov_len = sizeof(sad8); /* Destination2 address */ iov[cnt].iov_base = dst2; iov[cnt++].iov_len = ROUNDUP(dst2->sa.sa_len); smsg.sadb_msg_len += sad8.sadb_address_len; sprotocol.sadb_protocol_proto = sproto2; /* Protocol2 */ iov[cnt].iov_base = &sprotocol; iov[cnt++].iov_len = sizeof(sprotocol); smsg.sadb_msg_len += sprotocol.sadb_protocol_len; break; case DEL_SPI: /* SA header */ iov[cnt].iov_base = &sa; iov[cnt++].iov_len = sizeof(sa); smsg.sadb_msg_len += sa.sadb_sa_len; /* Destination address header */ iov[cnt].iov_base = &sad2; iov[cnt++].iov_len = sizeof(sad2); /* Destination address */ iov[cnt].iov_base = dst; iov[cnt++].iov_len = ROUNDUP(dst->sa.sa_len); smsg.sadb_msg_len += sad2.sadb_address_len; break; case ENC_IP: /* SA header */ iov[cnt].iov_base = &sa; iov[cnt++].iov_len = sizeof(sa); smsg.sadb_msg_len += sa.sadb_sa_len; /* Destination address header */ iov[cnt].iov_base = &sad2; iov[cnt++].iov_len = sizeof(sad2); /* Destination address */ iov[cnt].iov_base = dst; iov[cnt++].iov_len = ROUNDUP(dst->sa.sa_len); smsg.sadb_msg_len += sad2.sadb_address_len; if (sad1.sadb_address_exttype) { /* Source address header */ iov[cnt].iov_base = &sad1; iov[cnt++].iov_len = sizeof(sad1); /* Source address */ iov[cnt].iov_base = src; iov[cnt++].iov_len = ROUNDUP(src->sa.sa_len); smsg.sadb_msg_len += sad1.sadb_address_len; } break; case IPCOMP: /* SA header */ iov[cnt].iov_base = &sa; iov[cnt++].iov_len = sizeof(sa); smsg.sadb_msg_len += sa.sadb_sa_len; /* Destination address header */ iov[cnt].iov_base = &sad2; iov[cnt++].iov_len = sizeof(sad2); /* Destination address */ iov[cnt].iov_base = dst; iov[cnt++].iov_len = ROUNDUP(dst->sa.sa_len); smsg.sadb_msg_len += sad2.sadb_address_len; if (sad1.sadb_address_exttype) { /* Source address header */ iov[cnt].iov_base = &sad1; iov[cnt++].iov_len = sizeof(sad1); /* Source address */ iov[cnt].iov_base = src; iov[cnt++].iov_len = ROUNDUP(src->sa.sa_len); smsg.sadb_msg_len += sad1.sadb_address_len; } break; case FLOW: if ((smsg.sadb_msg_type != SADB_X_DELFLOW) && (sad2.sadb_address_exttype)) { /* Destination address header */ iov[cnt].iov_base = &sad2; iov[cnt++].iov_len = sizeof(sad2); /* Destination address */ iov[cnt].iov_base = dst; iov[cnt++].iov_len = ROUNDUP(dst->sa.sa_len); smsg.sadb_msg_len += sad2.sadb_address_len; } if ((sad1.sadb_address_exttype) && (smsg.sadb_msg_type != SADB_X_DELFLOW)) { /* Source address header */ iov[cnt].iov_base = &sad1; iov[cnt++].iov_len = sizeof(sad1); /* Source address */ iov[cnt].iov_base = src; iov[cnt++].iov_len = ROUNDUP(src->sa.sa_len); smsg.sadb_msg_len += sad1.sadb_address_len; } if (sprotocol.sadb_protocol_len) { /* Transport protocol */ iov[cnt].iov_base = &sprotocol; iov[cnt++].iov_len = sizeof(sprotocol); smsg.sadb_msg_len += sprotocol.sadb_protocol_len; } /* Flow type */ iov[cnt].iov_base = &sprotocol2; iov[cnt++].iov_len = sizeof(sprotocol2); smsg.sadb_msg_len += sprotocol2.sadb_protocol_len; /* Flow source address header */ if ((sport != -1) && (sport != 0)) { if (osrc->sa.sa_family == AF_INET) { osrc->sin.sin_port = sport; osmask->sin.sin_port = 0xffff; } #ifdef INET6 else if (osrc->sa.sa_family == AF_INET6) { osrc->sin6.sin6_port = sport; osmask->sin6.sin6_port = 0xffff; } #endif /* INET6 */ } iov[cnt].iov_base = &sad4; iov[cnt++].iov_len = sizeof(sad4); /* Flow source address */ iov[cnt].iov_base = osrc; iov[cnt++].iov_len = ROUNDUP(osrc->sa.sa_len); smsg.sadb_msg_len += sad4.sadb_address_len; /* Flow destination address header */ iov[cnt].iov_base = &sad5; iov[cnt++].iov_len = sizeof(sad5); /* Flow destination address */ if ((dport != -1) && (dport != 0)) { if (odst->sa.sa_family == AF_INET) { odst->sin.sin_port = dport; odmask->sin.sin_port = 0xffff; } #ifdef INET6 else if (odst->sa.sa_family == AF_INET6) { odst->sin6.sin6_port = dport; odmask->sin6.sin6_port = 0xffff; } #endif /* INET6 */ } iov[cnt].iov_base = odst; iov[cnt++].iov_len = ROUNDUP(odst->sa.sa_len); smsg.sadb_msg_len += sad5.sadb_address_len; /* Flow source address mask header */ iov[cnt].iov_base = &sad6; iov[cnt++].iov_len = sizeof(sad6); /* Flow source address mask */ iov[cnt].iov_base = osmask; iov[cnt++].iov_len = ROUNDUP(osmask->sa.sa_len); smsg.sadb_msg_len += sad6.sadb_address_len; /* Flow destination address mask header */ iov[cnt].iov_base = &sad7; iov[cnt++].iov_len = sizeof(sad7); /* Flow destination address mask */ iov[cnt].iov_base = odmask; iov[cnt++].iov_len = ROUNDUP(odmask->sa.sa_len); smsg.sadb_msg_len += sad7.sadb_address_len; if ((srcid) && (smsg.sadb_msg_type != SADB_X_DELFLOW)) { iov[cnt].iov_base = &sid1; iov[cnt++].iov_len = sizeof(sid1); /* SRC identity */ iov[cnt].iov_base = srcid; iov[cnt++].iov_len = ROUNDUP(strlen(srcid) + 1); smsg.sadb_msg_len += sid1.sadb_ident_len; } if ((dstid) && (smsg.sadb_msg_type != SADB_X_DELFLOW)) { iov[cnt].iov_base = &sid2; iov[cnt++].iov_len = sizeof(sid2); /* DST identity */ iov[cnt].iov_base = dstid; iov[cnt++].iov_len = ROUNDUP(strlen(dstid) + 1); smsg.sadb_msg_len += sid2.sadb_ident_len; } break; case FLUSH: /* No more work needed */ break; } } xf_set(iov, cnt, smsg.sadb_msg_len * 8); exit(0); }