/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2007 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * NOTE:I'm trying to use "struct sadb_foo" instead of "sadb_foo_t" * as a maximal PF_KEY portability test. * * Also, this is a deliberately single-threaded app, also for portability * to systems without POSIX threads. */ #pragma ident "%Z%%M% %I% %E% SMI" #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 static int keysock; static uint32_t seq; static pid_t mypid; static boolean_t vflag = B_FALSE; /* Verbose? */ static boolean_t cflag = B_FALSE; /* Check Only */ char *my_fmri = NULL; FILE *debugfile = stdout; #define MAX_GET_SIZE 1024 /* * WARN() and ERROR() do the same thing really, with ERROR() the function * that prints the error buffer needs to be called at the end of a code block * This will print out all accumulated errors before bailing. The WARN() * macro calls handle_errors() in such a way that it prints the message * then continues. * If the FATAL() macro used call handle_errors() immediately. */ #define ERROR(x, y, z) x = record_error(x, y, z) #define ERROR1(w, x, y, z) w = record_error(w, x, y, z) #define ERROR2(v, w, x, y, z) v = record_error(v, w, x, y, z) #define WARN(x, y, z) ERROR(x, y, z);\ handle_errors(x, NULL, B_FALSE, B_FALSE); x = NULL #define WARN1(w, x, y, z) ERROR1(w, x, y, z);\ handle_errors(w, NULL, B_FALSE, B_FALSE); w = NULL #define WARN2(v, w, x, y, z) ERROR2(v, w, x, y, z);\ handle_errors(v, NULL, B_FALSE, B_FALSE); v = NULL #define FATAL(x, y, z) ERROR(x, y, z);\ handle_errors(x, y, B_TRUE, B_TRUE) #define FATAL1(w, x, y, z) ERROR1(w, x, y, z);\ handle_errors(w, x, B_TRUE, B_TRUE) /* Defined as a uint64_t array for alignment purposes. */ static uint64_t get_buffer[MAX_GET_SIZE]; /* * Create/Grow a buffer large enough to hold error messages. If *ebuf * is not NULL then it will contain a copy of the command line that * triggered the error/warning, copy this into a new buffer or * append new messages to the existing buffer. */ /*PRINTFLIKE1*/ char * record_error(char *ep, char *ebuf, char *fmt, ...) { char *err_ptr; char tmp_buff[1024]; va_list ap; int length = 0; err_ptr = ep; va_start(ap, fmt); length = vsnprintf(tmp_buff, sizeof (tmp_buff), fmt, ap); va_end(ap); /* There is a new line character */ length++; if (ep == NULL) { if (ebuf != NULL) length += strlen(ebuf); } else { length += strlen(ep); } if (err_ptr == NULL) err_ptr = calloc(length, sizeof (char)); else err_ptr = realloc(err_ptr, length); if (err_ptr == NULL) Bail("realloc() failure"); /* * If (ep == NULL) then this is the first error to record, * copy in the command line that triggered this error/warning. */ if (ep == NULL && ebuf != NULL) (void) strlcpy(err_ptr, ebuf, length); /* * Now the actual error. */ (void) strlcat(err_ptr, tmp_buff, length); return (err_ptr); } /* * Print usage message. */ static void usage(void) { if (!interactive) { (void) fprintf(stderr, gettext("Usage:\t" "ipseckey [ -nvp ] | cmd [sa_type] [extfield value]*\n")); (void) fprintf(stderr, gettext("\tipseckey [ -nvp ] -f infile\n")); (void) fprintf(stderr, gettext("\tipseckey [ -nvp ] -s outfile\n")); } EXIT_FATAL(NULL); } /* * Print out any errors, tidy up as required. * error pointer ep will be free()'d */ void handle_errors(char *ep, char *ebuf, boolean_t fatal, boolean_t done) { if (ep != NULL) { if (my_fmri == NULL) { /* * For now suppress the errors when run from smf(5) * because potentially sensitive information could * end up in a publicly readable logfile. */ (void) fprintf(stdout, "%s\n", ep); (void) fflush(stdout); } free(ep); if (fatal) { if (ebuf != NULL) { free(ebuf); } /* reset command buffer */ if (interactive) longjmp(env, 1); } else { return; } } else { /* * No errors, if this is the last time that this function * is called, free(ebuf) and reset command buffer. */ if (done) { if (ebuf != NULL) { free(ebuf); } /* reset command buffer */ if (interactive) longjmp(env, 1); } return; } EXIT_FATAL(NULL); } /* * Initialize a PF_KEY base message. */ static void msg_init(struct sadb_msg *msg, uint8_t type, uint8_t satype) { msg->sadb_msg_version = PF_KEY_V2; msg->sadb_msg_type = type; msg->sadb_msg_errno = 0; msg->sadb_msg_satype = satype; /* For starters... */ msg->sadb_msg_len = SADB_8TO64(sizeof (*msg)); msg->sadb_msg_reserved = 0; msg->sadb_msg_seq = ++seq; msg->sadb_msg_pid = mypid; } /* * parseXXX and rparseXXX commands parse input and convert them to PF_KEY * field values, or do the reverse for the purposes of saving the SA tables. * (See the save_XXX functions.) */ #define CMD_NONE 0 #define CMD_UPDATE 2 #define CMD_ADD 3 #define CMD_DELETE 4 #define CMD_GET 5 #define CMD_FLUSH 9 #define CMD_DUMP 10 #define CMD_MONITOR 11 #define CMD_PMONITOR 12 #define CMD_QUIT 13 #define CMD_SAVE 14 #define CMD_HELP 15 /* * Parse the command. */ static int parsecmd(char *cmdstr) { static struct cmdtable { char *cmd; int token; } table[] = { /* * Q: Do we want to do GETSPI? * A: No, it's for automated key mgmt. only. Either that, * or it isn't relevant until we support non IPsec SA types. */ {"update", CMD_UPDATE}, {"add", CMD_ADD}, {"delete", CMD_DELETE}, {"get", CMD_GET}, /* * Q: And ACQUIRE and REGISTER and EXPIRE? * A: not until we support non IPsec SA types. */ {"flush", CMD_FLUSH}, {"dump", CMD_DUMP}, {"monitor", CMD_MONITOR}, {"passive_monitor", CMD_PMONITOR}, {"pmonitor", CMD_PMONITOR}, {"quit", CMD_QUIT}, {"exit", CMD_QUIT}, {"save", CMD_SAVE}, {"help", CMD_HELP}, {"?", CMD_HELP}, {NULL, CMD_NONE} }; struct cmdtable *ct = table; while (ct->cmd != NULL && strcmp(ct->cmd, cmdstr) != 0) ct++; return (ct->token); } /* * Convert a number from a command line. I picked "u_longlong_t" for the * number because we need the largest number available. Also, the strto * calls don't deal in units of uintNN_t. */ static u_longlong_t parsenum(char *num, boolean_t bail, char *ebuf) { u_longlong_t rc = 0; char *end = NULL; char *ep = NULL; if (num == NULL) { FATAL(ep, ebuf, gettext("Unexpected end of command line," " was expecting a number.\n")); /* NOTREACHED */ } errno = 0; rc = strtoull(num, &end, 0); if (errno != 0 || end == num || *end != '\0') { if (bail) { ERROR1(ep, ebuf, gettext( "Expecting a number, not \"%s\"!\n"), num); } else { /* * -1, while not optimal, is sufficiently out of range * for most of this function's applications when * we don't just bail. */ return ((u_longlong_t)-1); } } handle_errors(ep, NULL, B_FALSE, B_FALSE); return (rc); } /* * Parse and reverse parse a specific SA type (AH, ESP, etc.). */ static struct typetable { char *type; int token; } type_table[] = { {"all", SADB_SATYPE_UNSPEC}, {"ah", SADB_SATYPE_AH}, {"esp", SADB_SATYPE_ESP}, /* PF_KEY NOTE: More to come if net/pfkeyv2.h gets updated. */ {NULL, 0} /* Token value is irrelevant for this entry. */ }; static int parsesatype(char *type, char *ebuf) { struct typetable *tt = type_table; char *ep = NULL; if (type == NULL) return (SADB_SATYPE_UNSPEC); while (tt->type != NULL && strcasecmp(tt->type, type) != 0) tt++; /* * New SA types (including ones keysock maintains for user-land * protocols) may be added, so parse a numeric value if possible. */ if (tt->type == NULL) { tt->token = (int)parsenum(type, B_FALSE, ebuf); if (tt->token == -1) { ERROR1(ep, ebuf, gettext( "Unknown SA type (%s).\n"), type); tt->token = SADB_SATYPE_UNSPEC; } } handle_errors(ep, NULL, B_FALSE, B_FALSE); return (tt->token); } #define NEXTEOF 0 #define NEXTNONE 1 #define NEXTNUM 2 #define NEXTSTR 3 #define NEXTNUMSTR 4 #define NEXTADDR 5 #define NEXTHEX 6 #define NEXTIDENT 7 #define NEXTADDR4 8 #define NEXTADDR6 9 #define TOK_EOF 0 #define TOK_UNKNOWN 1 #define TOK_SPI 2 #define TOK_REPLAY 3 #define TOK_STATE 4 #define TOK_AUTHALG 5 #define TOK_ENCRALG 6 #define TOK_FLAGS 7 #define TOK_SOFT_ALLOC 8 #define TOK_SOFT_BYTES 9 #define TOK_SOFT_ADDTIME 10 #define TOK_SOFT_USETIME 11 #define TOK_HARD_ALLOC 12 #define TOK_HARD_BYTES 13 #define TOK_HARD_ADDTIME 14 #define TOK_HARD_USETIME 15 #define TOK_CURRENT_ALLOC 16 #define TOK_CURRENT_BYTES 17 #define TOK_CURRENT_ADDTIME 18 #define TOK_CURRENT_USETIME 19 #define TOK_SRCADDR 20 #define TOK_DSTADDR 21 #define TOK_PROXYADDR 22 #define TOK_AUTHKEY 23 #define TOK_ENCRKEY 24 #define TOK_SRCIDTYPE 25 #define TOK_DSTIDTYPE 26 #define TOK_DPD 27 #define TOK_SENS_LEVEL 28 #define TOK_SENS_MAP 29 #define TOK_INTEG_LEVEL 30 #define TOK_INTEG_MAP 31 #define TOK_SRCADDR6 32 #define TOK_DSTADDR6 33 #define TOK_PROXYADDR6 34 #define TOK_SRCPORT 35 #define TOK_DSTPORT 36 #define TOK_PROTO 37 #define TOK_ENCAP 38 #define TOK_NATLOC 39 #define TOK_NATREM 40 #define TOK_NATLPORT 41 #define TOK_NATRPORT 42 #define TOK_IPROTO 43 #define TOK_IDSTADDR 44 #define TOK_IDSTADDR6 45 #define TOK_ISRCPORT 46 #define TOK_IDSTPORT 47 static struct toktable { char *string; int token; int next; } tokens[] = { /* "String", token value, next arg is */ {"spi", TOK_SPI, NEXTNUM}, {"replay", TOK_REPLAY, NEXTNUM}, {"state", TOK_STATE, NEXTNUMSTR}, {"auth_alg", TOK_AUTHALG, NEXTNUMSTR}, {"authalg", TOK_AUTHALG, NEXTNUMSTR}, {"encr_alg", TOK_ENCRALG, NEXTNUMSTR}, {"encralg", TOK_ENCRALG, NEXTNUMSTR}, {"flags", TOK_FLAGS, NEXTNUM}, {"soft_alloc", TOK_SOFT_ALLOC, NEXTNUM}, {"soft_bytes", TOK_SOFT_BYTES, NEXTNUM}, {"soft_addtime", TOK_SOFT_ADDTIME, NEXTNUM}, {"soft_usetime", TOK_SOFT_USETIME, NEXTNUM}, {"hard_alloc", TOK_HARD_ALLOC, NEXTNUM}, {"hard_bytes", TOK_HARD_BYTES, NEXTNUM}, {"hard_addtime", TOK_HARD_ADDTIME, NEXTNUM}, {"hard_usetime", TOK_HARD_USETIME, NEXTNUM}, {"current_alloc", TOK_CURRENT_ALLOC, NEXTNUM}, {"current_bytes", TOK_CURRENT_BYTES, NEXTNUM}, {"current_addtime", TOK_CURRENT_ADDTIME, NEXTNUM}, {"current_usetime", TOK_CURRENT_USETIME, NEXTNUM}, {"saddr", TOK_SRCADDR, NEXTADDR}, {"srcaddr", TOK_SRCADDR, NEXTADDR}, {"src", TOK_SRCADDR, NEXTADDR}, {"daddr", TOK_DSTADDR, NEXTADDR}, {"dstaddr", TOK_DSTADDR, NEXTADDR}, {"dst", TOK_DSTADDR, NEXTADDR}, {"proxyaddr", TOK_PROXYADDR, NEXTADDR}, {"proxy", TOK_PROXYADDR, NEXTADDR}, {"innersrc", TOK_PROXYADDR, NEXTADDR}, {"isrc", TOK_PROXYADDR, NEXTADDR}, {"innerdst", TOK_IDSTADDR, NEXTADDR}, {"idst", TOK_IDSTADDR, NEXTADDR}, {"sport", TOK_SRCPORT, NEXTNUM}, {"dport", TOK_DSTPORT, NEXTNUM}, {"innersport", TOK_ISRCPORT, NEXTNUM}, {"isport", TOK_ISRCPORT, NEXTNUM}, {"innerdport", TOK_IDSTPORT, NEXTNUM}, {"idport", TOK_IDSTPORT, NEXTNUM}, {"proto", TOK_PROTO, NEXTNUM}, {"ulp", TOK_PROTO, NEXTNUM}, {"iproto", TOK_IPROTO, NEXTNUM}, {"iulp", TOK_IPROTO, NEXTNUM}, {"saddr6", TOK_SRCADDR6, NEXTADDR}, {"srcaddr6", TOK_SRCADDR6, NEXTADDR}, {"src6", TOK_SRCADDR6, NEXTADDR}, {"daddr6", TOK_DSTADDR6, NEXTADDR}, {"dstaddr6", TOK_DSTADDR6, NEXTADDR}, {"dst6", TOK_DSTADDR6, NEXTADDR}, {"proxyaddr6", TOK_PROXYADDR6, NEXTADDR}, {"proxy6", TOK_PROXYADDR6, NEXTADDR}, {"innersrc6", TOK_PROXYADDR6, NEXTADDR}, {"isrc6", TOK_PROXYADDR6, NEXTADDR}, {"innerdst6", TOK_IDSTADDR6, NEXTADDR}, {"idst6", TOK_IDSTADDR6, NEXTADDR}, {"authkey", TOK_AUTHKEY, NEXTHEX}, {"encrkey", TOK_ENCRKEY, NEXTHEX}, {"srcidtype", TOK_SRCIDTYPE, NEXTIDENT}, {"dstidtype", TOK_DSTIDTYPE, NEXTIDENT}, {"dpd", TOK_DPD, NEXTNUM}, {"sens_level", TOK_SENS_LEVEL, NEXTNUM}, {"sens_map", TOK_SENS_MAP, NEXTHEX}, {"integ_level", TOK_INTEG_LEVEL, NEXTNUM}, {"integ_map", TOK_INTEG_MAP, NEXTHEX}, {"nat_loc", TOK_NATLOC, NEXTADDR}, {"nat_rem", TOK_NATREM, NEXTADDR}, {"nat_lport", TOK_NATLPORT, NEXTNUM}, {"nat_rport", TOK_NATRPORT, NEXTNUM}, {"encap", TOK_ENCAP, NEXTNUMSTR}, {NULL, TOK_UNKNOWN, NEXTEOF} }; /* * Q: Do I need stuff for proposals, combinations, supported algorithms, * or SPI ranges? * * A: Probably not, but you never know. * * Parse out extension header type values. */ static int parseextval(char *value, int *next) { struct toktable *tp; if (value == NULL) return (TOK_EOF); for (tp = tokens; tp->string != NULL; tp++) if (strcmp(value, tp->string) == 0) break; /* * Since the OS controls what extensions are available, we don't have * to parse numeric values here. */ *next = tp->next; return (tp->token); } /* * Parse possible state values. */ static uint8_t parsestate(char *state, char *ebuf) { struct states { char *state; uint8_t retval; } states[] = { {"larval", SADB_SASTATE_LARVAL}, {"mature", SADB_SASTATE_MATURE}, {"dying", SADB_SASTATE_DYING}, {"dead", SADB_SASTATE_DEAD}, {NULL, 0} }; struct states *sp; char *ep = NULL; if (state == NULL) { FATAL(ep, ebuf, "Unexpected end of command line " "was expecting a state.\n"); } for (sp = states; sp->state != NULL; sp++) { if (strcmp(sp->state, state) == 0) return (sp->retval); } ERROR1(ep, ebuf, gettext("Unknown state type \"%s\"\n"), state); handle_errors(ep, NULL, B_FALSE, B_FALSE); return (0); } /* * Return the numerical algorithm identifier corresponding to the specified * algorithm name. */ static uint8_t parsealg(char *alg, int proto_num, char *ebuf) { u_longlong_t invalue; struct ipsecalgent *algent; char *ep = NULL; if (alg == NULL) { FATAL(ep, ebuf, gettext("Unexpected end of command line, " "was expecting an algorithm name.\n")); } algent = getipsecalgbyname(alg, proto_num, NULL); if (algent != NULL) { uint8_t alg_num; alg_num = algent->a_alg_num; freeipsecalgent(algent); return (alg_num); } /* * Since algorithms can be loaded during kernel run-time, check for * numeric algorithm values too. PF_KEY can catch bad ones with EINVAL. */ invalue = parsenum(alg, B_FALSE, ebuf); if (invalue != (u_longlong_t)-1 && (u_longlong_t)(invalue & (u_longlong_t)0xff) == invalue) return ((uint8_t)invalue); if (proto_num == IPSEC_PROTO_ESP) { ERROR1(ep, ebuf, gettext( "Unknown encryption algorithm type \"%s\"\n"), alg); } else { ERROR1(ep, ebuf, gettext( "Unknown authentication algorithm type \"%s\"\n"), alg); } handle_errors(ep, NULL, B_FALSE, B_FALSE); return (0); } /* * Parse and reverse parse out a source/destination ID type. */ static struct idtypes { char *idtype; uint8_t retval; } idtypes[] = { {"prefix", SADB_IDENTTYPE_PREFIX}, {"fqdn", SADB_IDENTTYPE_FQDN}, {"domain", SADB_IDENTTYPE_FQDN}, {"domainname", SADB_IDENTTYPE_FQDN}, {"user_fqdn", SADB_IDENTTYPE_USER_FQDN}, {"mailbox", SADB_IDENTTYPE_USER_FQDN}, {"der_dn", SADB_X_IDENTTYPE_DN}, {"der_gn", SADB_X_IDENTTYPE_GN}, {NULL, 0} }; static uint16_t parseidtype(char *type, char *ebuf) { struct idtypes *idp; u_longlong_t invalue; char *ep = NULL; if (type == NULL) { /* Shouldn't reach here, see callers for why. */ FATAL(ep, ebuf, gettext("Unexpected end of command line, " "was expecting a type.\n")); } for (idp = idtypes; idp->idtype != NULL; idp++) { if (strcasecmp(idp->idtype, type) == 0) return (idp->retval); } /* * Since identity types are almost arbitrary, check for numeric * algorithm values too. PF_KEY can catch bad ones with EINVAL. */ invalue = parsenum(type, B_FALSE, ebuf); if (invalue != (u_longlong_t)-1 && (u_longlong_t)(invalue & (u_longlong_t)0xffff) == invalue) return ((uint16_t)invalue); ERROR1(ep, ebuf, gettext("Unknown identity type \"%s\"\n"), type); handle_errors(ep, NULL, B_FALSE, B_FALSE); return (0); } /* * Parse an address off the command line. Return length of sockaddr, * and either return a hostent pointer (caller frees). The new * getipnodebyname() call does the Right Thing (TM), even with * raw addresses (colon-separated IPv6 or dotted decimal IPv4). */ static struct { struct hostent he; char *addtl[2]; } dummy; static union { struct in6_addr ipv6; struct in_addr ipv4; uint64_t aligner; } addr1; static int parseaddr(char *addr, struct hostent **hpp, boolean_t v6only, char *ebuf) { int hp_errno; struct hostent *hp = NULL; char *ep = NULL; if (addr == NULL) { FATAL(ep, ebuf, gettext("Unexpected end of command line, " "was expecting an address.\n")); } if (!nflag) { /* * Try name->address first. Assume AF_INET6, and * get IPv4's, plus IPv6's if and only if IPv6 is configured. * This means to add IPv6 SAs, you must have IPv6 * up-and-running. (AI_DEFAULT works here.) */ hp = getipnodebyname(addr, AF_INET6, (v6only ? AI_ADDRCONFIG : (AI_DEFAULT | AI_ALL)), &hp_errno); } else { /* * Try a normal address conversion only. Use "dummy" * to construct a fake hostent. Caller will know not * to free this one. */ if (inet_pton(AF_INET6, addr, &addr1) == 1) { dummy.he.h_addr_list = dummy.addtl; dummy.addtl[0] = (char *)&addr1; dummy.addtl[1] = NULL; hp = &dummy.he; dummy.he.h_addrtype = AF_INET6; dummy.he.h_length = sizeof (struct in6_addr); } else if (inet_pton(AF_INET, addr, &addr1) == 1) { /* * Remap to AF_INET6 anyway. */ dummy.he.h_addr_list = dummy.addtl; dummy.addtl[0] = (char *)&addr1; dummy.addtl[1] = NULL; hp = &dummy.he; dummy.he.h_addrtype = AF_INET6; dummy.he.h_length = sizeof (struct in6_addr); /* * NOTE: If macro changes to disallow in-place * conversion, rewhack this. */ IN6_INADDR_TO_V4MAPPED(&addr1.ipv4, &addr1.ipv6); } else { hp = NULL; } } if (hp == NULL) WARN1(ep, ebuf, gettext("Unknown address %s."), addr); *hpp = hp; /* Always return sockaddr_in6 for now. */ handle_errors(ep, NULL, B_FALSE, B_FALSE); return (sizeof (struct sockaddr_in6)); } /* * Parse a hex character for a key. A string will take the form: * xxxxxxxxx/nn * where * xxxxxxxxx == a string of hex characters ([0-9][a-f][A-F]) * nn == an optional decimal "mask". If it is not present, it * is assumed that the hex string will be rounded to the nearest * byte, where odd nibbles, like 123 will become 0x0123. * * NOTE:Unlike the expression of IP addresses, I will not allow an * excessive "mask". For example 2112/50 is very illegal. * NOTE2: This key should be in canonical order. Consult your man * pages per algorithm about said order. */ #define hd2num(hd) (((hd) >= '0' && (hd) <= '9') ? ((hd) - '0') : \ (((hd) >= 'a' && (hd) <= 'f') ? ((hd) - 'a' + 10) : ((hd) - 'A' + 10))) static struct sadb_key * parsekey(char *input, char *ebuf) { struct sadb_key *retval; uint_t i, hexlen = 0, bits, alloclen; uint8_t *key; char *ep = NULL; if (input == NULL) { FATAL(ep, ebuf, gettext("Unexpected end of command line, " "was expecting a key.\n")); } /* Allow hex values prepended with 0x convention */ if ((strnlen(input, sizeof (hexlen)) > 2) && (strncasecmp(input, "0x", 2) == 0)) input += 2; for (i = 0; input[i] != '\0' && input[i] != '/'; i++) hexlen++; if (input[i] == '\0') { bits = 0; } else { /* Have /nn. */ input[i] = '\0'; if (sscanf((input + i + 1), "%u", &bits) != 1) { FATAL1(ep, ebuf, gettext( "\"%s\" is not a bit specifier.\n"), (input + i + 1)); } /* hexlen in nibbles */ if (((bits + 3) >> 2) > hexlen) { ERROR2(ep, ebuf, gettext( "bit length %d is too big for %s.\n"), bits, input); } /* * Adjust hexlen down if user gave us too small of a bit * count. */ if ((hexlen << 2) > bits + 3) { WARN2(ep, ebuf, gettext( "WARNING: Lower bits will be truncated " "for:\n\t%s/%d.\n"), input, bits); hexlen = (bits + 3) >> 2; input[hexlen] = '\0'; } } /* * Allocate. Remember, hexlen is in nibbles. */ alloclen = sizeof (*retval) + roundup((hexlen/2 + (hexlen & 0x1)), 8); retval = malloc(alloclen); if (retval == NULL) Bail("malloc(parsekey)"); retval->sadb_key_len = SADB_8TO64(alloclen); retval->sadb_key_reserved = 0; if (bits == 0) retval->sadb_key_bits = (hexlen + (hexlen & 0x1)) << 2; else retval->sadb_key_bits = bits; /* * Read in nibbles. Read in odd-numbered as shifted high. * (e.g. 123 becomes 0x1230). */ key = (uint8_t *)(retval + 1); for (i = 0; input[i] != '\0'; i += 2) { boolean_t second = (input[i + 1] != '\0'); if (!isxdigit(input[i]) || (!isxdigit(input[i + 1]) && second)) { ERROR1(ep, ebuf, gettext( "string '%s' not a hex value.\n"), input); free(retval); retval = NULL; break; } *key = (hd2num(input[i]) << 4); if (second) *key |= hd2num(input[i + 1]); else break; /* out of for loop. */ key++; } /* bzero the remaining bits if we're a non-octet amount. */ if (bits & 0x7) *((input[i] == '\0') ? key - 1 : key) &= 0xff << (8 - (bits & 0x7)); handle_errors(ep, NULL, B_FALSE, B_FALSE); return (retval); } /* * Write a message to the PF_KEY socket. If verbose, print the message * heading into the kernel. */ static int key_write(int fd, void *msg, size_t len) { if (vflag) { (void) printf( gettext("VERBOSE ON: Message to kernel looks like:\n")); (void) printf("==========================================\n"); print_samsg(stdout, msg, B_FALSE, vflag, nflag); (void) printf("==========================================\n"); } return (write(fd, msg, len)); } /* * SIGALRM handler for time_critical_enter. */ static void time_critical_catch(int signal) { if (signal == SIGALRM) { errx(1, gettext("Reply message from PF_KEY timed out.")); } else { errx(1, gettext("Caught signal %d while trying to receive" "PF_KEY reply message"), signal); } /* errx() calls exit. */ } #define TIME_CRITICAL_TIME 10 /* In seconds */ /* * Enter a "time critical" section where key is waiting for a return message. */ static void time_critical_enter(void) { (void) signal(SIGALRM, time_critical_catch); (void) alarm(TIME_CRITICAL_TIME); } /* * Exit the "time critical" section after getting an appropriate return * message. */ static void time_critical_exit(void) { (void) alarm(0); (void) signal(SIGALRM, SIG_DFL); } /* * Construct a PF_KEY FLUSH message for the SA type specified. */ static void doflush(int satype) { struct sadb_msg msg; int rc; msg_init(&msg, SADB_FLUSH, (uint8_t)satype); rc = key_write(keysock, &msg, sizeof (msg)); if (rc == -1) Bail("write() to PF_KEY socket failed (in doflush)"); time_critical_enter(); do { rc = read(keysock, &msg, sizeof (msg)); if (rc == -1) Bail("read (in doflush)"); } while (msg.sadb_msg_seq != seq || msg.sadb_msg_pid != mypid); time_critical_exit(); /* * I should _never_ hit the following unless: * * 1. There is a kernel bug. * 2. There is another process filling in its pid with mine, and * issuing a different message that would cause a different result. */ if (msg.sadb_msg_type != SADB_FLUSH || msg.sadb_msg_satype != (uint8_t)satype) { syslog((LOG_NOTICE|LOG_AUTH), gettext("doflush: Return message not of type SADB_FLUSH!")); Bail("doflush: Return message not of type SADB_FLUSH!"); } if (msg.sadb_msg_errno != 0) { errno = msg.sadb_msg_errno; if (errno == EINVAL) { print_diagnostic(stderr, msg.sadb_x_msg_diagnostic); warnx(gettext("Cannot flush SA type %d."), satype); } Bail("return message (in doflush)"); } } /* * save_XXX functions are used when "saving" the SA tables to either a * file or standard output. They use the dump_XXX functions where needed, * but mostly they use the rparseXXX functions. */ /* * Because "save" and "dump" both use the SADB_DUMP message, fold both * into the same function. */ static void dodump(int satype, FILE *ofile) { struct sadb_msg *msg = (struct sadb_msg *)get_buffer; int rc; if (ofile != NULL) { (void) fprintf(ofile, gettext("# This key file was generated by the")); (void) fprintf(ofile, gettext(" ipseckey(1m) command's 'save' feature.\n\n")); } msg_init(msg, SADB_DUMP, (uint8_t)satype); rc = key_write(keysock, msg, sizeof (*msg)); if (rc == -1) Bail("write to PF_KEY socket failed (in dodump)"); do { /* * For DUMP, do only the read as a time critical section. */ time_critical_enter(); rc = read(keysock, get_buffer, sizeof (get_buffer)); time_critical_exit(); if (rc == -1) Bail("read (in dodump)"); if (msg->sadb_msg_pid == mypid && msg->sadb_msg_type == SADB_DUMP && msg->sadb_msg_seq != 0 && msg->sadb_msg_errno == 0) { if (ofile == NULL) { print_samsg(stdout, get_buffer, B_FALSE, vflag, nflag); (void) putchar('\n'); } else { save_assoc(get_buffer, ofile); } } } while (msg->sadb_msg_pid != mypid || (msg->sadb_msg_errno == 0 && msg->sadb_msg_seq != 0)); if (ofile != NULL && ofile != stdout) (void) fclose(ofile); if (msg->sadb_msg_errno == 0) { if (ofile == NULL) (void) printf( gettext("Dump succeeded for SA type %d.\n"), satype); } else { print_diagnostic(stderr, msg->sadb_x_msg_diagnostic); errno = msg->sadb_msg_errno; Bail("Dump failed"); } } #define SCOPE_UNSPEC 0 #define SCOPE_LINKLOCAL 1 #define SCOPE_SITELOCAL 2 #define SCOPE_GLOBAL 3 #define SCOPE_V4COMPAT 4 #define SCOPE_LOOPBACK 5 /* Pedantic, yes, but necessary. */ static int ipv6_addr_scope(struct in6_addr *addr) { /* Don't return anything regarding multicast for now... */ if (IN6_IS_ADDR_UNSPECIFIED(addr)) return (SCOPE_UNSPEC); if (IN6_IS_ADDR_LINKLOCAL(addr)) return (SCOPE_LINKLOCAL); if (IN6_IS_ADDR_SITELOCAL(addr)) return (SCOPE_SITELOCAL); if (IN6_IS_ADDR_V4COMPAT(addr)) return (SCOPE_V4COMPAT); if (IN6_IS_ADDR_LOOPBACK(addr)) return (SCOPE_LOOPBACK); /* For now, return global by default. */ return (SCOPE_GLOBAL); } /* * doaddresses(): * * Used by doaddup() and dodelget() to create new SA's based on the * provided source and destination addresses hostent. * * sadb_msg_type: expected PF_KEY reply message type * sadb_msg_satype: expected PF_KEY reply satype * cmd: user command * srchp: hostent for the source address(es) * dsthp: hostent for the destination address(es) * src: points to the SADB source address extension * dst: points to the SADB destination address extension * unspec_src: indicates an unspecified source address. * buffer: pointer to the SADB buffer to use with PF_KEY * buffer_size: size of buffer * spi: spi for this message (set by caller) * srcport: source port if specified * dstport: destination port if specified * proto: IP protocol number if specified * iproto: Inner (tunnel mode) IP protocol number if specified * NATT note: we are going to assume a semi-sane world where NAT * boxen don't explode to multiple addresses. */ static void doaddresses(uint8_t sadb_msg_type, uint8_t sadb_msg_satype, int cmd, struct hostent *srchp, struct hostent *dsthp, struct sadb_address *src, struct sadb_address *dst, boolean_t unspec_src, uint64_t *buffer, int buffer_size, uint32_t spi, char *ebuf) { boolean_t single_dst; struct sockaddr_in6 *sin6; struct sadb_msg *msgp; int i, rc; char **walker; /* For the SRC and PROXY walking functions. */ char *first_match; uint64_t savebuf[MAX_GET_SIZE]; uint16_t srcport = 0, dstport = 0; char *ep = NULL; /* * Okay, now we have "src", "dst", and maybe "proxy" reassigned * to point into the buffer to be written to PF_KEY, we can do * potentially several writes based on destination address. * * First, obtain port numbers from passed-in extensions. */ if (src != NULL) { sin6 = (struct sockaddr_in6 *)(src + 1); srcport = ntohs(sin6->sin6_port); } if (dst != NULL) { sin6 = (struct sockaddr_in6 *)(dst + 1); dstport = ntohs(sin6->sin6_port); } /* * The rules for ADD, GET, and UPDATE: (NOTE: This assumes IPsec. * If other consumers of PF_KEY happen, this will have to be * rewhacked.): * * Do a message for every possible DST address. * * If a source or proxy address explodes, keep unspecified * (and mention unspecified). * * If dsthp is == dummy.he, then go through the loop once. * If any other hp is == dummy.he, then you don't have to apply any * silly rules. * * DELETE is different, because you can leave either "src" or "dst" * blank! You need to explode if one of them is full, and not assume * that the other is set. */ if (dsthp == NULL) { /* * No destination address specified. * With extended diagnostics, we don't have to bail the * non-DELETE cases here. The EINVAL diagnostics will be * enough to inform the user(s) what happened. */ i = 0; do { if (srchp == &dummy.he) { /* Just to be sure... */ srchp->h_addr_list[1] = NULL; } else if (srchp != NULL) { /* Degenerate case, h_addr_list[0] == NULL. */ if (srchp->h_addr_list[i] == NULL) Bail("Empty source address list"); /* * Fill in the src sockaddr. */ sin6 = (struct sockaddr_in6 *)(src + 1); bzero(sin6, sizeof (*sin6)); bcopy(srchp->h_addr_list[i], &sin6->sin6_addr, sizeof (struct in6_addr)); sin6->sin6_family = AF_INET6; sin6->sin6_port = htons(srcport); } /* Save off a copy for later writing... */ msgp = (struct sadb_msg *)buffer; bcopy(buffer, savebuf, SADB_64TO8(msgp->sadb_msg_len)); rc = key_write(keysock, buffer, SADB_64TO8(msgp->sadb_msg_len)); if (rc == -1) Bail("write() to PF_KEY socket " "(in doaddresses)"); time_critical_enter(); do { rc = read(keysock, buffer, buffer_size); if (rc == -1) Bail("read (in doaddresses)"); } while (msgp->sadb_msg_seq != seq || msgp->sadb_msg_pid != mypid); time_critical_exit(); if (msgp->sadb_msg_type != sadb_msg_type || msgp->sadb_msg_satype != sadb_msg_satype) { syslog((LOG_NOTICE|LOG_AUTH), gettext( "doaddresses: Unexpected returned message " "(%d exp %d)\n"), msgp->sadb_msg_type, sadb_msg_type); Bail("doaddresses: Unexpected returned " "message"); } errno = msgp->sadb_msg_errno; if (errno != 0) { if (errno == EINVAL) { WARN(ep, ebuf, gettext( "One of the entered " "values is incorrect.")); print_diagnostic(stderr, msgp->sadb_x_msg_diagnostic); } else { Bail("return message (in doaddresses)"); } } /* ...and then restore the saved buffer. */ msgp = (struct sadb_msg *)savebuf; bcopy(savebuf, buffer, SADB_64TO8(msgp->sadb_msg_len)); } while (srchp != NULL && srchp->h_addr_list[++i] != NULL); return; } single_dst = (dsthp == &dummy.he || dsthp->h_addr_list[1] == NULL); for (i = 0; dsthp->h_addr_list[i] != NULL; i++) { if (dsthp == &dummy.he) { /* Just to be sure... */ dsthp->h_addr_list[1] = NULL; } else { /* * Fill in the dst sockaddr. */ sin6 = (struct sockaddr_in6 *)(dst + 1); bzero(sin6, sizeof (*sin6)); bcopy(dsthp->h_addr_list[i], &sin6->sin6_addr, sizeof (struct in6_addr)); sin6->sin6_family = AF_INET6; sin6->sin6_port = htons(dstport); } /* * Try and assign src, if there's any ambiguity. */ if (!unspec_src && srchp != &dummy.he) { if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { /* * IPv4 address. Find an IPv4 address, then * keep looking for a second one. If a second * exists, print a message, and fill in the * unspecified address. */ first_match = NULL; for (walker = srchp->h_addr_list; *walker != NULL; walker++) { /* LINTED E_BAD_PTR_CAST_ALIGN */ if (IN6_IS_ADDR_V4MAPPED( (struct in6_addr *)*walker)) { if (first_match != NULL) break; else first_match = *walker; } } sin6 = (struct sockaddr_in6 *)(src + 1); bzero(sin6, sizeof (*sin6)); if (first_match == NULL) { /* * No IPv4 hits. Is this a single * dest? */ WARN1(ep, ebuf, gettext( "No IPv4 source address " "for name %s.\n"), srchp->h_name); if (single_dst) { ERROR(ep, ebuf, gettext( "Only single destination " "IP address.\n")); } else { /* Continue, but do I print? */ continue; /* for loop */ } /* I should never reach here. */ } sin6->sin6_family = AF_INET6; sin6->sin6_port = htons(srcport); if (*walker != NULL) { /* * Early loop exit. It must've been * multiple hits... * * Issue a null-source warning? */ WARN1(ep, ebuf, gettext( "Multiple IPv4 source addresses " "for %s, using unspecified source " "instead."), srchp->h_name); } else { /* * If I reach here w/o hitting the * previous if statements, I have a * single source address for this * destination. */ bcopy(first_match, &sin6->sin6_addr, sizeof (struct in6_addr)); } } else { /* * IPv6 address. Find an IPv6 address. * Unlike IPv4 addresses, things can get a * little more sticky with scopes, etc. */ int dst_scope, src_scope; dst_scope = ipv6_addr_scope(&sin6->sin6_addr); first_match = NULL; for (walker = srchp->h_addr_list; *walker != NULL; walker++) { /* LINTED E_BAD_PTR_CAST_ALIGN */ if (!IN6_IS_ADDR_V4MAPPED( (struct in6_addr *)*walker)) { /* * Set first-match, etc. * Take into account scopes, * and other IPv6 thingies. */ src_scope = ipv6_addr_scope( /* LINTED E_BAD_PTR_CAST */ (struct in6_addr *)*walker); if (src_scope == SCOPE_UNSPEC || src_scope == dst_scope) { if (first_match != NULL) break; else first_match = *walker; } } } sin6 = (struct sockaddr_in6 *)(src + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_port = htons(srcport); if (first_match == NULL) { /* * No IPv6 hits. Is this a single * dest? */ WARN1(ep, ebuf, gettext( "No IPv6 source address of " "matching scope for name %s.\n"), srchp->h_name); if (single_dst) { ERROR(ep, ebuf, gettext( "Only a single IPV6 " "destination " "address.\n")); } else { /* Continue, but do I print? */ continue; /* for loop */ } /* I should never reach here. */ } sin6->sin6_family = AF_INET6; if (*walker != NULL) { /* * Early loop exit. Issue a * null-source warning? */ WARN1(ep, ebuf, gettext( "Multiple IPv6 source addresses " "for %s of the same scope, using " "unspecified source instead.\n"), srchp->h_name); } else { /* * If I reach here w/o hitting the * previous if statements, I have a * single source address for this * destination. */ bcopy(first_match, &sin6->sin6_addr, sizeof (struct in6_addr)); } } } /* * If there are errors at this point there is no * point sending anything to PF_KEY. */ handle_errors(ep, ebuf, B_TRUE, B_FALSE); /* Save off a copy for later writing... */ msgp = (struct sadb_msg *)buffer; bcopy(buffer, savebuf, SADB_64TO8(msgp->sadb_msg_len)); rc = key_write(keysock, buffer, SADB_64TO8(msgp->sadb_msg_len)); if (rc == -1) Bail("write() to PF_KEY socket (in doaddresses)"); /* Blank the key for paranoia's sake. */ bzero(buffer, buffer_size); time_critical_enter(); do { rc = read(keysock, buffer, buffer_size); if (rc == -1) Bail("read (in doaddresses)"); } while (msgp->sadb_msg_seq != seq || msgp->sadb_msg_pid != mypid); time_critical_exit(); /* * I should _never_ hit the following unless: * * 1. There is a kernel bug. * 2. Another process is mistakenly using my pid in a PF_KEY * message. */ if (msgp->sadb_msg_type != sadb_msg_type || msgp->sadb_msg_satype != sadb_msg_satype) { syslog((LOG_NOTICE|LOG_AUTH), gettext( "doaddresses: Unexpected returned message " "(%d exp %d)\n"), msgp->sadb_msg_type, sadb_msg_type); Bail("doaddresses: Unexpected returned message"); } if (msgp->sadb_msg_errno != 0) { char addrprint[INET6_ADDRSTRLEN]; int on_errno = 0; char *on_errno_msg; /* * Print different error messages depending * on the SADB message type being processed. * If we get a ESRCH error for a GET/DELETE * messages, we report that the SA does not * exist. If we get a EEXIST error for a * ADD/UPDATE message, we report that the * SA already exists. */ if (sadb_msg_type == SADB_GET || sadb_msg_type == SADB_DELETE) { on_errno = ESRCH; on_errno_msg = "does not exist"; } else if (sadb_msg_type == SADB_ADD || sadb_msg_type == SADB_UPDATE) { on_errno = EEXIST; on_errno_msg = "already exists"; } errno = msgp->sadb_msg_errno; if (errno == on_errno) { ERROR2(ep, ebuf, gettext( "Association (type = %s) " "with spi 0x%x and addr\n"), rparsesatype(msgp->sadb_msg_satype), ntohl(spi)); ERROR2(ep, ebuf, "%s %s.\n", do_inet_ntop(dsthp->h_addr_list[i], addrprint, sizeof (addrprint)), on_errno_msg); msgp = (struct sadb_msg *)savebuf; bcopy(savebuf, buffer, SADB_64TO8(msgp->sadb_msg_len)); continue; } else { if (errno == EINVAL) { ERROR2(ep, ebuf, gettext( "PF_KEY Diagnostic code %u: %s.\n"), msgp->sadb_x_msg_diagnostic, keysock_diag( msgp->sadb_x_msg_diagnostic)); } else { Bail("return message (in doaddresses)"); } } } if (cmd == CMD_GET) { if (msgp->sadb_msg_len > MAX_GET_SIZE) { WARN1(ep, ebuf, gettext("WARNING: " "SA information bigger than %d bytes.\n"), SADB_64TO8(MAX_GET_SIZE)); } print_samsg(stdout, buffer, B_FALSE, vflag, nflag); } handle_errors(ep, ebuf, B_TRUE, B_FALSE); /* ...and then restore the saved buffer. */ msgp = (struct sadb_msg *)savebuf; bcopy(savebuf, buffer, SADB_64TO8(msgp->sadb_msg_len)); lines_added++; } /* Degenerate case, h_addr_list[0] == NULL. */ if (i == 0) Bail("Empty destination address list"); /* * free(ebuf) even if there are no errors. * handle_errors() won't return here. */ handle_errors(ep, ebuf, B_TRUE, B_TRUE); } /* * Perform an add or an update. ADD and UPDATE are similar in the extensions * they need. */ static void doaddup(int cmd, int satype, char *argv[], char *ebuf) { uint64_t *buffer, *nexthdr; struct sadb_msg msg; struct sadb_sa *assoc = NULL; struct sadb_address *src = NULL, *dst = NULL; struct sadb_address *isrc = NULL, *idst = NULL; struct sadb_address *natt_local = NULL, *natt_remote = NULL; struct sadb_key *encrypt = NULL, *auth = NULL; struct sadb_ident *srcid = NULL, *dstid = NULL; struct sadb_lifetime *hard = NULL, *soft = NULL; /* Current? */ struct sockaddr_in6 *sin6; /* MLS TODO: Need sensitivity eventually. */ int next, token, sa_len, alloclen, totallen = sizeof (msg), prefix; uint32_t spi; char *thiscmd, *pstr; boolean_t readstate = B_FALSE, unspec_src = B_FALSE; boolean_t alloc_inner = B_FALSE, use_natt = B_FALSE; struct hostent *srchp = NULL, *dsthp = NULL, *isrchp = NULL, *idsthp = NULL; struct hostent *natt_lhp = NULL, *natt_rhp = NULL; uint16_t srcport = 0, dstport = 0, natt_lport = 0, natt_rport = 0, isrcport = 0, idstport = 0; uint8_t proto = 0, iproto = 0; char *ep = NULL; thiscmd = (cmd == CMD_ADD) ? "add" : "update"; msg_init(&msg, ((cmd == CMD_ADD) ? SADB_ADD : SADB_UPDATE), (uint8_t)satype); /* Assume last element in argv is set to NULL. */ do { token = parseextval(*argv, &next); argv++; switch (token) { case TOK_EOF: /* Do nothing, I'm done. */ break; case TOK_UNKNOWN: ERROR1(ep, ebuf, gettext( "Unknown extension field \"%s\" \n"), *(argv - 1)); break; case TOK_SPI: case TOK_REPLAY: case TOK_STATE: case TOK_AUTHALG: case TOK_ENCRALG: case TOK_ENCAP: /* * May want to place this chunk of code in a function. * * This code checks for duplicate entries on a command * line. */ /* Allocate the SADB_EXT_SA extension. */ if (assoc == NULL) { assoc = malloc(sizeof (*assoc)); if (assoc == NULL) Bail("malloc(assoc)"); bzero(assoc, sizeof (*assoc)); assoc->sadb_sa_exttype = SADB_EXT_SA; assoc->sadb_sa_len = SADB_8TO64(sizeof (*assoc)); totallen += sizeof (*assoc); } switch (token) { case TOK_SPI: /* * If some cretin types in "spi 0" then he/she * can type in another SPI. */ if (assoc->sadb_sa_spi != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single SPI value.\n")); break; } /* Must convert SPI to network order! */ assoc->sadb_sa_spi = htonl((uint32_t)parsenum(*argv, B_TRUE, ebuf)); if (assoc->sadb_sa_spi == 0) { ERROR(ep, ebuf, gettext( "Invalid SPI value \"0\" .\n")); } break; case TOK_REPLAY: /* * That same cretin can do the same with * replay. */ if (assoc->sadb_sa_replay != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single replay window size.\n")); break; } assoc->sadb_sa_replay = (uint8_t)parsenum(*argv, B_TRUE, ebuf); if (assoc->sadb_sa_replay != 0) { WARN(ep, ebuf, gettext( "WARNING: Replay with manual" " keying considered harmful.\n")); } break; case TOK_STATE: /* * 0 is an actual state value, LARVAL. This * means that one can type in the larval state * and then type in another state on the same * command line. */ if (assoc->sadb_sa_state != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single SA state.\n")); break; } assoc->sadb_sa_state = parsestate(*argv, ebuf); readstate = B_TRUE; break; case TOK_AUTHALG: if (assoc->sadb_sa_auth != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single auth algorithm.\n")); break; } assoc->sadb_sa_auth = parsealg(*argv, IPSEC_PROTO_AH, ebuf); break; case TOK_ENCRALG: if (satype == SADB_SATYPE_AH) { ERROR(ep, ebuf, gettext("Cannot specify" " encryption with SA type ah.\n")); break; } if (assoc->sadb_sa_encrypt != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single encryption algorithm.\n")); break; } assoc->sadb_sa_encrypt = parsealg(*argv, IPSEC_PROTO_ESP, ebuf); break; case TOK_ENCAP: if (use_natt) { ERROR(ep, ebuf, gettext( "Can only specify single" " encapsulation.\n")); break; } if (strncmp(*argv, "udp", 3)) { ERROR(ep, ebuf, gettext( "Can only specify udp" " encapsulation.\n")); break; } use_natt = B_TRUE; /* set assoc flags later */ break; } argv++; break; case TOK_SRCPORT: if (srcport != 0) { ERROR(ep, ebuf, gettext("Can only specify " "single source port.\n")); break; } srcport = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_DSTPORT: if (dstport != 0) { ERROR(ep, ebuf, gettext("Can only specify " "single destination port.\n")); break; } dstport = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_ISRCPORT: alloc_inner = B_TRUE; if (isrcport != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single inner-source port.\n")); break; } isrcport = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_IDSTPORT: alloc_inner = B_TRUE; if (idstport != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single inner-destination port.\n")); break; } idstport = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_NATLPORT: if (natt_lport != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single NAT-T local port.\n")); break; } natt_lport = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_NATRPORT: if (natt_rport != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single NAT-T remote port.\n")); break; } natt_rport = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_PROTO: if (proto != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single protocol.\n")); break; } proto = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_IPROTO: alloc_inner = B_TRUE; if (iproto != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single inner protocol.\n")); break; } iproto = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_SRCADDR: case TOK_SRCADDR6: if (src != NULL) { ERROR(ep, ebuf, gettext( "Can only specify " "single source address.\n")); break; } sa_len = parseaddr(*argv, &srchp, (token == TOK_SRCADDR6), ebuf); if (srchp == NULL) { ERROR1(ep, ebuf, gettext( "Unknown src address \"%s\"\n"), *argv); break; } argv++; /* * Round of the sockaddr length to an 8 byte * boundary to make PF_KEY happy. */ alloclen = sizeof (*src) + roundup(sa_len, 8); src = malloc(alloclen); if (src == NULL) Bail("malloc(src)"); totallen += alloclen; src->sadb_address_len = SADB_8TO64(alloclen); src->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; src->sadb_address_reserved = 0; src->sadb_address_prefixlen = 0; src->sadb_address_proto = 0; if (srchp == &dummy.he) { /* * Single address with -n flag. */ sin6 = (struct sockaddr_in6 *)(src + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; bcopy(srchp->h_addr_list[0], &sin6->sin6_addr, sizeof (struct in6_addr)); } break; case TOK_DSTADDR: case TOK_DSTADDR6: if (dst != NULL) { ERROR(ep, ebuf, gettext( "Can only specify single " "destination address.\n")); break; } sa_len = parseaddr(*argv, &dsthp, (token == TOK_DSTADDR6), ebuf); if (dsthp == NULL) { ERROR1(ep, ebuf, gettext( "Unknown dst address \"%s\"\n"), *argv); break; } argv++; alloclen = sizeof (*dst) + roundup(sa_len, 8); dst = malloc(alloclen); if (dst == NULL) Bail("malloc(dst)"); totallen += alloclen; dst->sadb_address_len = SADB_8TO64(alloclen); dst->sadb_address_exttype = SADB_EXT_ADDRESS_DST; dst->sadb_address_reserved = 0; dst->sadb_address_prefixlen = 0; dst->sadb_address_proto = 0; if (dsthp == &dummy.he) { /* * Single address with -n flag. */ sin6 = (struct sockaddr_in6 *)(dst + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; bcopy(dsthp->h_addr_list[0], &sin6->sin6_addr, sizeof (struct in6_addr)); } break; case TOK_PROXYADDR: case TOK_PROXYADDR6: if (isrc != NULL) { ERROR(ep, ebuf, gettext( "Can only specify single " "proxy/inner-source address.\n")); break; } if ((pstr = strchr(*argv, '/')) != NULL) { /* Parse out the prefix. */ errno = 0; prefix = strtol(pstr + 1, NULL, 10); if (errno != 0) { ERROR1(ep, ebuf, gettext( "Invalid prefix %s."), pstr); break; } /* Recycle pstr */ alloclen = (int)(pstr - *argv); pstr = malloc(alloclen + 1); if (pstr == NULL) { Bail("malloc(pstr)"); } (void) strlcpy(pstr, *argv, alloclen + 1); } else { pstr = *argv; /* * Assume mapping to AF_INET6, and we're a host. * XXX some miscreants may still make classful * assumptions. If this is a problem, fix it * here. */ prefix = 128; } sa_len = parseaddr(pstr, &isrchp, (token == TOK_PROXYADDR6), ebuf); if (isrchp == NULL) { ERROR1(ep, ebuf, gettext( "Unknown proxy/inner-source address " "\"%s\"\n"), *argv); break; } if (pstr != *argv) free(pstr); argv++; alloclen = sizeof (*isrc) + roundup(sa_len, 8); isrc = malloc(alloclen); if (isrc == NULL) Bail("malloc(isrc)"); totallen += alloclen; isrc->sadb_address_len = SADB_8TO64(alloclen); isrc->sadb_address_exttype = SADB_EXT_ADDRESS_PROXY; isrc->sadb_address_reserved = 0; isrc->sadb_address_prefixlen = prefix; isrc->sadb_address_proto = 0; if (isrchp == &dummy.he || isrchp->h_addr_list[1] == NULL) { /* * Single address with -n flag or single name. */ sin6 = (struct sockaddr_in6 *)(isrc + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; bcopy(isrchp->h_addr_list[0], &sin6->sin6_addr, sizeof (struct in6_addr)); /* * normalize prefixlen for IPv4-mapped * addresses. */ if (prefix <= 32 && IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) isrc->sadb_address_prefixlen += 96; alloc_inner = B_TRUE; } else { /* * If the proxy/isrc address is vague, don't * bother. */ totallen -= alloclen; free(isrc); isrc = NULL; WARN1(ep, ebuf, gettext( "Proxy/inner-source address %s " "is vague, not using.\n"), isrchp->h_name); freehostent(isrchp); isrchp = NULL; break; } break; case TOK_IDSTADDR: case TOK_IDSTADDR6: if (idst != NULL) { ERROR(ep, ebuf, gettext( "Can only specify single " "inner-destination address.\n")); break; } if ((pstr = strchr(*argv, '/')) != NULL) { /* Parse out the prefix. */ errno = 0; prefix = strtol(pstr + 1, NULL, 10); if (errno != 0) { ERROR1(ep, ebuf, gettext( "Invalid prefix %s.\n"), pstr); break; } /* Recycle pstr */ alloclen = (int)(pstr - *argv); pstr = malloc(alloclen + 1); if (pstr == NULL) { Bail("malloc(pstr)"); } (void) strlcpy(pstr, *argv, alloclen + 1); } else { pstr = *argv; /* * Assume mapping to AF_INET6, and we're a host. * XXX some miscreants may still make classful * assumptions. If this is a problem, fix it * here. */ prefix = 128; } sa_len = parseaddr(pstr, &idsthp, (token == TOK_IDSTADDR6), ebuf); if (idsthp == NULL) { ERROR1(ep, ebuf, gettext( "Unknown Inner Src address " " \"%s\"\n"), *argv); break; } if (pstr != *argv) free(pstr); argv++; alloclen = sizeof (*idst) + roundup(sa_len, 8); idst = malloc(alloclen); if (idst == NULL) Bail("malloc(idst)"); totallen += alloclen; idst->sadb_address_len = SADB_8TO64(alloclen); idst->sadb_address_exttype = SADB_X_EXT_ADDRESS_INNER_DST; idst->sadb_address_reserved = 0; idst->sadb_address_prefixlen = prefix; idst->sadb_address_proto = 0; if (idsthp == &dummy.he || idsthp->h_addr_list[1] == NULL) { /* * Single address with -n flag or single name. */ sin6 = (struct sockaddr_in6 *)(idst + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; bcopy(idsthp->h_addr_list[0], &sin6->sin6_addr, sizeof (struct in6_addr)); /* * normalize prefixlen for IPv4-mapped * addresses. */ if (prefix <= 32 && IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) idst->sadb_address_prefixlen += 96; alloc_inner = B_TRUE; } else { /* * If the idst address is vague, don't bother. */ totallen -= alloclen; free(idst); idst = NULL; WARN1(ep, ebuf, gettext( "Inner destination address %s " "is vague, not using.\n"), idsthp->h_name); freehostent(idsthp); idsthp = NULL; break; } break; case TOK_NATLOC: if (natt_local != NULL) { ERROR(ep, ebuf, gettext( "Can only specify " "single NAT-T local address.\n")); break; } sa_len = parseaddr(*argv, &natt_lhp, 0, ebuf); if (natt_lhp == NULL) { ERROR1(ep, ebuf, gettext( "Unknown NAT-T local address \"%s\"\n"), *argv); break; } argv++; /* * Round of the sockaddr length to an 8 byte * boundary to make PF_KEY happy. */ alloclen = sizeof (*natt_local) + roundup(sa_len, 8); natt_local = malloc(alloclen); if (natt_local == NULL) Bail("malloc(natt_local)"); totallen += alloclen; natt_local->sadb_address_len = SADB_8TO64(alloclen); natt_local->sadb_address_exttype = SADB_X_EXT_ADDRESS_NATT_LOC; natt_local->sadb_address_reserved = 0; natt_local->sadb_address_prefixlen = 0; natt_local->sadb_address_proto = 0; if (natt_lhp == &dummy.he || natt_lhp->h_addr_list[1] == NULL) { /* * Single address with -n flag or single name. */ sin6 = (struct sockaddr_in6 *)(natt_local + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; bcopy(natt_lhp->h_addr_list[0], &sin6->sin6_addr, sizeof (struct in6_addr)); } else { /* * If the nat-local address is vague, don't * bother. */ totallen -= alloclen; free(natt_local); natt_local = NULL; WARN1(ep, ebuf, gettext( "NAT-T local address %s " "is vague, not using.\n"), natt_lhp->h_name); freehostent(natt_lhp); natt_lhp = NULL; break; } break; case TOK_NATREM: if (natt_remote != NULL) { ERROR(ep, ebuf, gettext( "Can only specify " "single NAT-T remote address.\n")); break; } sa_len = parseaddr(*argv, &natt_rhp, 0, ebuf); if (natt_rhp == NULL) { ERROR1(ep, ebuf, gettext( "Unknown NAT-T remote address \"%s\"\n"), *argv); break; } argv++; /* * Round of the sockaddr length to an 8 byte * boundary to make PF_KEY happy. */ alloclen = sizeof (*natt_remote) + roundup(sa_len, 8); natt_remote = malloc(alloclen); if (natt_remote == NULL) Bail("malloc(natt_remote)"); totallen += alloclen; natt_remote->sadb_address_len = SADB_8TO64(alloclen); natt_remote->sadb_address_exttype = SADB_X_EXT_ADDRESS_NATT_REM; natt_remote->sadb_address_reserved = 0; natt_remote->sadb_address_prefixlen = 0; natt_remote->sadb_address_proto = 0; if (natt_rhp == &dummy.he || natt_rhp->h_addr_list[1] == NULL) { /* * Single address with -n flag or single name. */ sin6 = (struct sockaddr_in6 *)(natt_remote + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; bcopy(natt_rhp->h_addr_list[0], &sin6->sin6_addr, sizeof (struct in6_addr)); } else { /* * If the nat-renote address is vague, don't * bother. */ totallen -= alloclen; free(natt_remote); natt_remote = NULL; WARN1(ep, ebuf, gettext( "NAT-T remote address %s " "is vague, not using.\n"), natt_rhp->h_name); freehostent(natt_rhp); natt_rhp = NULL; break; } break; case TOK_ENCRKEY: if (encrypt != NULL) { ERROR(ep, ebuf, gettext( "Can only specify " "single encryption key.\n")); break; } if (assoc->sadb_sa_encrypt == SADB_EALG_NULL) { FATAL(ep, ebuf, gettext( "Cannot specify a key with NULL " "encryption algorithm.\n")); break; } encrypt = parsekey(*argv, ebuf); argv++; if (encrypt == NULL) { ERROR(ep, ebuf, gettext( "Invalid encryption key.\n")); break; } totallen += SADB_64TO8(encrypt->sadb_key_len); encrypt->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT; break; case TOK_AUTHKEY: if (auth != NULL) { ERROR(ep, ebuf, gettext( "Can only specify single" " authentication key.\n")); break; } auth = parsekey(*argv, ebuf); argv++; if (auth == NULL) { ERROR(ep, ebuf, gettext( "Invalid authentication key.\n")); break; } totallen += SADB_64TO8(auth->sadb_key_len); auth->sadb_key_exttype = SADB_EXT_KEY_AUTH; break; case TOK_SRCIDTYPE: if (*argv == NULL || *(argv + 1) == NULL) { FATAL(ep, ebuf, gettext( "Unexpected end of command " "line - Expecting Src Type.\n")); /* NOTREACHED */ break; } if (srcid != NULL) { ERROR(ep, ebuf, gettext( "Can only specify single" " source certificate identity.\n")); break; } alloclen = sizeof (*srcid) + roundup(strlen(*(argv + 1)) + 1, 8); srcid = malloc(alloclen); if (srcid == NULL) Bail("malloc(srcid)"); totallen += alloclen; srcid->sadb_ident_type = parseidtype(*argv, ebuf); argv++; srcid->sadb_ident_len = SADB_8TO64(alloclen); srcid->sadb_ident_exttype = SADB_EXT_IDENTITY_SRC; srcid->sadb_ident_reserved = 0; srcid->sadb_ident_id = 0; /* Not useful here. */ (void) strlcpy((char *)(srcid + 1), *argv, alloclen); argv++; break; case TOK_DSTIDTYPE: if (*argv == NULL || *(argv + 1) == NULL) { ERROR(ep, ebuf, gettext( "Unexpected end of command" " line - expecting dst type.\n")); break; } if (dstid != NULL) { ERROR(ep, ebuf, gettext( "Can only specify single destination " "certificate identity.\n")); break; } alloclen = sizeof (*dstid) + roundup(strlen(*(argv + 1)) + 1, 8); dstid = malloc(alloclen); if (dstid == NULL) Bail("malloc(dstid)"); totallen += alloclen; dstid->sadb_ident_type = parseidtype(*argv, ebuf); argv++; dstid->sadb_ident_len = SADB_8TO64(alloclen); dstid->sadb_ident_exttype = SADB_EXT_IDENTITY_DST; dstid->sadb_ident_reserved = 0; dstid->sadb_ident_id = 0; /* Not useful here. */ (void) strlcpy((char *)(dstid + 1), *argv, alloclen); argv++; break; case TOK_HARD_ALLOC: case TOK_HARD_BYTES: case TOK_HARD_ADDTIME: case TOK_HARD_USETIME: if (hard == NULL) { hard = malloc(sizeof (*hard)); if (hard == NULL) Bail("malloc(hard_lifetime)"); bzero(hard, sizeof (*hard)); hard->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD; hard->sadb_lifetime_len = SADB_8TO64(sizeof (*hard)); totallen += sizeof (*hard); } switch (token) { case TOK_HARD_ALLOC: if (hard->sadb_lifetime_allocations != 0) { ERROR(ep, ebuf, gettext( "Can only specify single" " hard allocation limit.\n")); break; } hard->sadb_lifetime_allocations = (uint32_t)parsenum(*argv, B_TRUE, ebuf); break; case TOK_HARD_BYTES: if (hard->sadb_lifetime_bytes != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single hard byte limit.\n")); break; } hard->sadb_lifetime_bytes = parsenum(*argv, B_TRUE, ebuf); break; case TOK_HARD_ADDTIME: if (hard->sadb_lifetime_addtime != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single past-add lifetime.\n")); break; } hard->sadb_lifetime_addtime = parsenum(*argv, B_TRUE, ebuf); break; case TOK_HARD_USETIME: if (hard->sadb_lifetime_usetime != 0) { ERROR(ep, ebuf, gettext( "Can only specify " "single past-use lifetime.\n")); break; } hard->sadb_lifetime_usetime = parsenum(*argv, B_TRUE, ebuf); break; } argv++; break; case TOK_SOFT_ALLOC: case TOK_SOFT_BYTES: case TOK_SOFT_ADDTIME: case TOK_SOFT_USETIME: if (soft == NULL) { soft = malloc(sizeof (*soft)); if (soft == NULL) Bail("malloc(soft_lifetime)"); bzero(soft, sizeof (*soft)); soft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT; soft->sadb_lifetime_len = SADB_8TO64(sizeof (*soft)); totallen += sizeof (*soft); } switch (token) { case TOK_SOFT_ALLOC: if (soft->sadb_lifetime_allocations != 0) { ERROR(ep, ebuf, gettext( "Can only specify single" " soft allocation limit.\n")); break; } soft->sadb_lifetime_allocations = (uint32_t)parsenum(*argv, B_TRUE, ebuf); break; case TOK_SOFT_BYTES: if (soft->sadb_lifetime_bytes != 0) { ERROR(ep, ebuf, gettext( "Can only specify single" " soft byte limit.\n")); break; } soft->sadb_lifetime_bytes = parsenum(*argv, B_TRUE, ebuf); break; case TOK_SOFT_ADDTIME: if (soft->sadb_lifetime_addtime != 0) { ERROR(ep, ebuf, gettext( "Can only specify single" " past-add lifetime.\n")); break; } soft->sadb_lifetime_addtime = parsenum(*argv, B_TRUE, ebuf); break; case TOK_SOFT_USETIME: if (soft->sadb_lifetime_usetime != 0) { ERROR(ep, ebuf, gettext( "Can only specify single" " past-use lifetime.\n")); break; } soft->sadb_lifetime_usetime = parsenum(*argv, B_TRUE, ebuf); break; } argv++; break; default: ERROR1(ep, ebuf, gettext( "Don't use extension %s for add/update.\n"), *(argv - 1)); break; } } while (token != TOK_EOF); handle_errors(ep, ebuf, B_TRUE, B_FALSE); #define PORT_ONLY_ALLOCATE(af, socktype, exttype, extvar, port) { \ alloclen = sizeof (sadb_address_t) + roundup(sizeof (socktype), 8); \ (extvar) = calloc(1, alloclen); \ if ((extvar) == NULL) { \ Bail("malloc(implicit port)"); \ } \ totallen += alloclen; \ (extvar)->sadb_address_len = SADB_8TO64(alloclen); \ (extvar)->sadb_address_exttype = (exttype); \ /* sin/sin6 has equivalent offsets for ports! */ \ sin6 = (struct sockaddr_in6 *)((extvar) + 1); \ sin6->sin6_family = (af); \ sin6->sin6_port = (port); \ } /* * If we specify inner ports or NAT ports w/o addresses, we still need * to allocate. Also, if we have one inner address, we need the * other, even if we don't specify anything. */ if (use_natt) { if (natt_lport != 0 && natt_local == NULL) { PORT_ONLY_ALLOCATE(AF_INET, struct sockaddr_in, SADB_X_EXT_ADDRESS_NATT_LOC, natt_local, natt_lport); } if (natt_rport != 0 && natt_remote == NULL) { PORT_ONLY_ALLOCATE(AF_INET, struct sockaddr_in, SADB_X_EXT_ADDRESS_NATT_REM, natt_remote, natt_rport); } } else { if (natt_lport != 0 || natt_rport != 0) { ERROR(ep, ebuf, gettext("Must specify 'encap udp' " "with any NAT-T port.\n")); } else if (natt_local != NULL || natt_remote != NULL) { ERROR(ep, ebuf, gettext("Must specify 'encap udp' " "with any NAT-T address.\n")); } } if (alloc_inner && idst == NULL) { PORT_ONLY_ALLOCATE(AF_INET6, struct sockaddr_in6, SADB_X_EXT_ADDRESS_INNER_DST, idst, 0); } if (alloc_inner && isrc == NULL) { PORT_ONLY_ALLOCATE(AF_INET6, struct sockaddr_in6, SADB_X_EXT_ADDRESS_INNER_SRC, isrc, 0); } #undef PORT_ONLY_ALLOCATE /* * Okay, so now I have all of the potential extensions! * Allocate a single contiguous buffer. Keep in mind that it'll * be enough because the key itself will be yanked. */ if (src == NULL && dst != NULL) { /* * Set explicit unspecified source address. */ size_t lenbytes = SADB_64TO8(dst->sadb_address_len); unspec_src = B_TRUE; totallen += lenbytes; src = malloc(lenbytes); if (src == NULL) Bail("malloc(implicit src)"); /* Confusing, but we're copying from DST to SRC. :) */ bcopy(dst, src, lenbytes); src->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; sin6 = (struct sockaddr_in6 *)(src + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; } msg.sadb_msg_len = SADB_8TO64(totallen); buffer = malloc(totallen); nexthdr = buffer; bcopy(&msg, nexthdr, sizeof (msg)); nexthdr += SADB_8TO64(sizeof (msg)); if (assoc != NULL) { if (assoc->sadb_sa_spi == 0) { ERROR1(ep, ebuf, gettext( "The SPI value is missing for " "the association you wish to %s.\n"), thiscmd); } if (assoc->sadb_sa_auth == 0 && assoc->sadb_sa_encrypt == 0 && cmd == CMD_ADD) { free(assoc); FATAL(ep, ebuf, gettext( "Select at least one algorithm " "for this add.\n")); } /* Hack to let user specify NULL ESP implicitly. */ if (msg.sadb_msg_satype == SADB_SATYPE_ESP && assoc->sadb_sa_encrypt == 0) assoc->sadb_sa_encrypt = SADB_EALG_NULL; /* 0 is an actual value. Print a warning if it was entered. */ if (assoc->sadb_sa_state == 0) { if (readstate) { ERROR(ep, ebuf, gettext( "WARNING: Cannot set LARVAL SA state.\n")); } assoc->sadb_sa_state = SADB_SASTATE_MATURE; } if (use_natt) { if (natt_remote != NULL) assoc->sadb_sa_flags |= SADB_X_SAFLAGS_NATT_REM; if (natt_local != NULL) assoc->sadb_sa_flags |= SADB_X_SAFLAGS_NATT_LOC; } if (alloc_inner) { /* * For now, assume RFC 3884's dream of transport-mode * SAs with inner IP address selectors will not * happen. */ assoc->sadb_sa_flags |= SADB_X_SAFLAGS_TUNNEL; if (proto != 0 && proto != IPPROTO_ENCAP && proto != IPPROTO_IPV6) { ERROR1(ep, ebuf, gettext( "WARNING: Protocol type %d not " "for use with Tunnel-Mode SA.\n"), proto); /* Continue and let PF_KEY scream... */ } } bcopy(assoc, nexthdr, SADB_64TO8(assoc->sadb_sa_len)); nexthdr += assoc->sadb_sa_len; /* Save the SPI for the case of an error. */ spi = assoc->sadb_sa_spi; free(assoc); } else { ERROR1(ep, ebuf, gettext( "Need SA parameters for %s.\n"), thiscmd); } if (hard != NULL) { bcopy(hard, nexthdr, SADB_64TO8(hard->sadb_lifetime_len)); nexthdr += hard->sadb_lifetime_len; free(hard); } if (soft != NULL) { bcopy(soft, nexthdr, SADB_64TO8(soft->sadb_lifetime_len)); nexthdr += soft->sadb_lifetime_len; free(soft); } if (encrypt == NULL && auth == NULL && cmd == CMD_ADD) { ERROR(ep, ebuf, gettext( "Must have at least one key for an add.\n")); } if (encrypt != NULL) { bcopy(encrypt, nexthdr, SADB_64TO8(encrypt->sadb_key_len)); nexthdr += encrypt->sadb_key_len; bzero(encrypt, SADB_64TO8(encrypt->sadb_key_len)); free(encrypt); } if (auth != NULL) { bcopy(auth, nexthdr, SADB_64TO8(auth->sadb_key_len)); nexthdr += auth->sadb_key_len; bzero(auth, SADB_64TO8(auth->sadb_key_len)); free(auth); } if (srcid != NULL) { bcopy(srcid, nexthdr, SADB_64TO8(srcid->sadb_ident_len)); nexthdr += srcid->sadb_ident_len; free(srcid); } if (dstid != NULL) { bcopy(dstid, nexthdr, SADB_64TO8(dstid->sadb_ident_len)); nexthdr += dstid->sadb_ident_len; free(dstid); } if (dst != NULL) { bcopy(dst, nexthdr, SADB_64TO8(dst->sadb_address_len)); free(dst); dst = (struct sadb_address *)nexthdr; dst->sadb_address_proto = proto; ((struct sockaddr_in6 *)(dst + 1))->sin6_port = htons(dstport); nexthdr += dst->sadb_address_len; } else { FATAL1(ep, ebuf, gettext( "Need destination address for %s.\n"), thiscmd); } if (use_natt) { if (natt_remote == NULL && natt_local == NULL) { ERROR(ep, ebuf, gettext( "Must specify NAT-T remote or local address " "for UDP encapsulation.\n")); } if (natt_remote != NULL) { bcopy(natt_remote, nexthdr, SADB_64TO8(natt_remote->sadb_address_len)); free(natt_remote); natt_remote = (struct sadb_address *)nexthdr; nexthdr += natt_remote->sadb_address_len; ((struct sockaddr_in6 *)(natt_remote + 1))->sin6_port = htons(natt_rport); } if (natt_local != NULL) { bcopy(natt_local, nexthdr, SADB_64TO8(natt_local->sadb_address_len)); free(natt_local); natt_local = (struct sadb_address *)nexthdr; nexthdr += natt_local->sadb_address_len; ((struct sockaddr_in6 *)(natt_local + 1))->sin6_port = htons(natt_lport); } } handle_errors(ep, ebuf, B_TRUE, B_FALSE); /* * PF_KEY requires a source address extension, even if the source * address itself is unspecified. (See "Set explicit unspecified..." * code fragment above. Destination reality check was above.) */ bcopy(src, nexthdr, SADB_64TO8(src->sadb_address_len)); free(src); src = (struct sadb_address *)nexthdr; src->sadb_address_proto = proto; ((struct sockaddr_in6 *)(src + 1))->sin6_port = htons(srcport); nexthdr += src->sadb_address_len; if (isrc != NULL) { bcopy(isrc, nexthdr, SADB_64TO8(isrc->sadb_address_len)); free(isrc); isrc = (struct sadb_address *)nexthdr; isrc->sadb_address_proto = iproto; ((struct sockaddr_in6 *)(isrc + 1))->sin6_port = htons(isrcport); nexthdr += isrc->sadb_address_len; } if (idst != NULL) { bcopy(idst, nexthdr, SADB_64TO8(idst->sadb_address_len)); free(idst); idst = (struct sadb_address *)nexthdr; idst->sadb_address_proto = iproto; ((struct sockaddr_in6 *)(idst + 1))->sin6_port = htons(idstport); nexthdr += idst->sadb_address_len; } if (cflag) { /* * Assume the checked cmd would have worked if it was actually * used. doaddresses() will increment lines_added if it * succeeds. */ lines_added++; } else { doaddresses((cmd == CMD_ADD) ? SADB_ADD : SADB_UPDATE, satype, cmd, srchp, dsthp, src, dst, unspec_src, buffer, totallen, spi, ebuf); } if (isrchp != NULL && isrchp != &dummy.he) freehostent(isrchp); if (idsthp != NULL && idsthp != &dummy.he) freehostent(idsthp); if (srchp != NULL && srchp != &dummy.he) freehostent(srchp); if (dsthp != NULL && dsthp != &dummy.he) freehostent(dsthp); if (natt_lhp != NULL && natt_lhp != &dummy.he) freehostent(natt_lhp); if (natt_rhp != NULL && natt_rhp != &dummy.he) freehostent(natt_rhp); free(ebuf); free(buffer); } /* * DELETE and GET are similar, in that they only need the extensions * required to _find_ an SA, and then either delete it or obtain its * information. */ static void dodelget(int cmd, int satype, char *argv[], char *ebuf) { struct sadb_msg *msg = (struct sadb_msg *)get_buffer; uint64_t *nextext; struct sadb_sa *assoc = NULL; struct sadb_address *src = NULL, *dst = NULL; int next, token, sa_len; char *thiscmd; uint32_t spi; struct hostent *srchp = NULL, *dsthp = NULL; struct sockaddr_in6 *sin6; boolean_t unspec_src = B_TRUE; uint16_t srcport = 0, dstport = 0; uint8_t proto = 0; char *ep = NULL; msg_init(msg, ((cmd == CMD_GET) ? SADB_GET : SADB_DELETE), (uint8_t)satype); /* Set the first extension header to right past the base message. */ nextext = (uint64_t *)(msg + 1); bzero(nextext, sizeof (get_buffer) - sizeof (*msg)); thiscmd = (cmd == CMD_GET) ? "get" : "delete"; #define ALLOC_ADDR_EXT(ext, exttype) \ (ext) = (struct sadb_address *)nextext; \ nextext = (uint64_t *)((ext) + 1); \ nextext += SADB_8TO64(roundup(sa_len, 8)); \ (ext)->sadb_address_exttype = exttype; \ (ext)->sadb_address_len = nextext - ((uint64_t *)ext); /* Assume last element in argv is set to NULL. */ do { token = parseextval(*argv, &next); argv++; switch (token) { case TOK_EOF: /* Do nothing, I'm done. */ break; case TOK_UNKNOWN: ERROR1(ep, ebuf, gettext( "Unknown extension field \"%s\"\n"), *(argv - 1)); break; case TOK_SPI: if (assoc != NULL) { ERROR(ep, ebuf, gettext( "Can only specify single SPI value.\n")); break; } assoc = (struct sadb_sa *)nextext; nextext = (uint64_t *)(assoc + 1); assoc->sadb_sa_len = SADB_8TO64(sizeof (*assoc)); assoc->sadb_sa_exttype = SADB_EXT_SA; assoc->sadb_sa_spi = htonl((uint32_t)parsenum(*argv, B_TRUE, ebuf)); spi = assoc->sadb_sa_spi; argv++; break; case TOK_SRCPORT: if (srcport != 0) { ERROR(ep, ebuf, gettext( "Can only specify single source port.\n")); break; } srcport = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_DSTPORT: if (dstport != 0) { ERROR(ep, ebuf, gettext( "Can only " "specify single destination port.\n")); break; } dstport = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_PROTO: if (proto != 0) { ERROR(ep, ebuf, gettext( "Can only specify single protocol.\n")); break; } proto = parsenum(*argv, B_TRUE, ebuf); argv++; break; case TOK_SRCADDR: case TOK_SRCADDR6: if (src != NULL) { ERROR(ep, ebuf, gettext( "Can only specify single source addr.\n")); break; } sa_len = parseaddr(*argv, &srchp, (token == TOK_SRCADDR6), ebuf); if (srchp == NULL) { ERROR1(ep, ebuf, gettext( "Unknown source address \"%s\"\n"), *argv); break; } argv++; unspec_src = B_FALSE; ALLOC_ADDR_EXT(src, SADB_EXT_ADDRESS_SRC); if (srchp == &dummy.he) { /* * Single address with -n flag. */ sin6 = (struct sockaddr_in6 *)(src + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; bcopy(srchp->h_addr_list[0], &sin6->sin6_addr, sizeof (struct in6_addr)); } /* The rest is pre-bzeroed for us. */ break; case TOK_DSTADDR: case TOK_DSTADDR6: if (dst != NULL) { ERROR(ep, ebuf, gettext( "Can only specify single destination " "address.\n")); break; } sa_len = parseaddr(*argv, &dsthp, (token == TOK_SRCADDR6), ebuf); if (dsthp == NULL) { ERROR1(ep, ebuf, gettext( "Unknown destination address \"%s\"\n"), *argv); break; } argv++; ALLOC_ADDR_EXT(dst, SADB_EXT_ADDRESS_DST); if (dsthp == &dummy.he) { /* * Single address with -n flag. */ sin6 = (struct sockaddr_in6 *)(dst + 1); bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; bcopy(dsthp->h_addr_list[0], &sin6->sin6_addr, sizeof (struct in6_addr)); } /* The rest is pre-bzeroed for us. */ break; default: ERROR2(ep, ebuf, gettext( "Don't use extension %s for '%s' command.\n"), *(argv - 1), thiscmd); break; } } while (token != TOK_EOF); handle_errors(ep, ebuf, B_TRUE, B_FALSE); if ((srcport != 0) && (src == NULL)) { ALLOC_ADDR_EXT(src, SADB_EXT_ADDRESS_SRC); sin6 = (struct sockaddr_in6 *)(src + 1); src->sadb_address_proto = proto; bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; sin6->sin6_port = htons(srcport); } if ((dstport != 0) && (dst == NULL)) { ALLOC_ADDR_EXT(dst, SADB_EXT_ADDRESS_DST); sin6 = (struct sockaddr_in6 *)(dst + 1); src->sadb_address_proto = proto; bzero(sin6, sizeof (*sin6)); sin6->sin6_family = AF_INET6; sin6->sin6_port = htons(dstport); } /* So I have enough of the message to send it down! */ msg->sadb_msg_len = nextext - get_buffer; if (assoc == NULL) { FATAL1(ep, ebuf, gettext( "Need SA parameters for %s.\n"), thiscmd); } if (cflag) { /* * Assume the checked cmd would have worked if it was actually * used. doaddresses() will increment lines_added if it * succeeds. */ lines_added++; } else { doaddresses((cmd == CMD_GET) ? SADB_GET : SADB_DELETE, satype, cmd, srchp, dsthp, src, dst, unspec_src, get_buffer, sizeof (get_buffer), spi, NULL); } if (srchp != NULL && srchp != &dummy.he) freehostent(srchp); if (dsthp != NULL && dsthp != &dummy.he) freehostent(dsthp); } /* * "ipseckey monitor" should exit very gracefully if ^C is tapped. */ static void monitor_catch(int signal) { errx(signal, gettext("Bailing on signal %d."), signal); } /* * Loop forever, listening on PF_KEY messages. */ static void domonitor(boolean_t passive) { struct sadb_msg *samsg; int rc; /* Catch ^C. */ (void) signal(SIGINT, monitor_catch); samsg = (struct sadb_msg *)get_buffer; if (!passive) { (void) printf(gettext("Actively")); msg_init(samsg, SADB_X_PROMISC, 1); /* Turn ON promisc. */ rc = key_write(keysock, samsg, sizeof (*samsg)); if (rc == -1) Bail("write (SADB_X_PROMISC)"); } else { (void) printf(gettext("Passively")); } (void) printf(gettext(" monitoring the PF_KEY socket.\n")); for (; ; ) { /* * I assume that read() is non-blocking, and will never * return 0. */ rc = read(keysock, samsg, sizeof (get_buffer)); if (rc == -1) Bail("read (in domonitor)"); (void) printf(gettext("Read %d bytes.\n"), rc); /* * Q: Should I use the same method of printing as GET does? * A: For now, yes. */ print_samsg(stdout, get_buffer, B_TRUE, vflag, nflag); (void) putchar('\n'); } } /* * Either mask or unmask all relevant signals. */ static void mask_signals(boolean_t unmask) { sigset_t set; static sigset_t oset; if (unmask) { (void) sigprocmask(SIG_SETMASK, &oset, NULL); } else { (void) sigfillset(&set); (void) sigprocmask(SIG_SETMASK, &set, &oset); } } /* * Assorted functions to print help text. */ #define puts_tr(s) (void) puts(gettext(s)) static void doattrhelp() { int i; puts_tr("\nSA attributes:"); for (i = 0; tokens[i].string != NULL; i++) { if (i%3 == 0) (void) printf("\n"); (void) printf(" %-15.15s", tokens[i].string); } (void) printf("\n"); } static void dohelpcmd(char *cmds) { int cmd; if (strcmp(cmds, "attr") == 0) { doattrhelp(); return; } cmd = parsecmd(cmds); switch (cmd) { case CMD_UPDATE: puts_tr("update - Update an existing SA"); break; case CMD_ADD: puts_tr("add - Add a new security association (SA)"); break; case CMD_DELETE: puts_tr("delete - Delete an SA"); break; case CMD_GET: puts_tr("get - Display an SA"); break; case CMD_FLUSH: puts_tr("flush - Delete all SAs"); break; case CMD_DUMP: puts_tr("dump - Display all SAs"); break; case CMD_MONITOR: puts_tr("monitor - Monitor all PF_KEY reply messages."); break; case CMD_PMONITOR: puts_tr( "pmonitor, passive_monitor - Monitor PF_KEY messages that"); puts_tr( " reply to all PF_KEY sockets."); break; case CMD_QUIT: puts_tr("quit, exit - Exit the program"); break; case CMD_SAVE: puts_tr("save - Saves all SAs to a file"); break; case CMD_HELP: puts_tr("help - Display list of commands"); puts_tr("help - Display help for command"); puts_tr("help attr - Display possible SA attributes"); break; default: (void) printf(gettext("%s: Unknown command\n"), cmds); break; } } static void dohelp(char *cmds) { if (cmds != NULL) { dohelpcmd(cmds); return; } puts_tr("Commands"); puts_tr("--------"); puts_tr("?, help - Display this list"); puts_tr("help - Display help for command"); puts_tr("help attr - Display possible SA attributes"); puts_tr("quit, exit - Exit the program"); puts_tr("monitor - Monitor all PF_KEY reply messages."); puts_tr("pmonitor, passive_monitor - Monitor PF_KEY messages that"); puts_tr(" reply to all PF_KEY sockets."); puts_tr(""); puts_tr("The following commands are of the form:"); puts_tr(" {SA type} {attribute value}*"); puts_tr(""); puts_tr("add (interactive only) - Add a new security association (SA)"); puts_tr("update (interactive only) - Update an existing SA"); puts_tr("delete - Delete an SA"); puts_tr("get - Display an SA"); puts_tr("flush - Delete all SAs"); puts_tr("dump - Display all SAs"); puts_tr("save - Saves all SAs to a file"); } /* * "Parse" a command line from argv. */ static void parseit(int argc, char *argv[], char *ebuf, boolean_t read_cmdfile) { int cmd, satype; char *ep = NULL; if (argc == 0) return; cmd = parsecmd(*argv++); /* * Some commands loop forever and should only be run from the command * line, they should never be run from a command file as this may * be used at boot time. */ switch (cmd) { case CMD_HELP: if (read_cmdfile) ERROR(ep, ebuf, gettext("Help not appropriate in " "config file.")); else dohelp(*argv); return; case CMD_MONITOR: if (read_cmdfile) ERROR(ep, ebuf, gettext("Monitor not appropriate in " "config file.")); else domonitor(B_FALSE); break; case CMD_PMONITOR: if (read_cmdfile) ERROR(ep, ebuf, gettext("Monitor not appropriate in " "config file.")); else domonitor(B_TRUE); break; case CMD_QUIT: EXIT_OK(NULL); } handle_errors(ep, ebuf, B_FALSE, B_FALSE); satype = parsesatype(*argv, ebuf); if (satype != SADB_SATYPE_UNSPEC) { argv++; } else { /* * You must specify either "all" or a specific SA type * for the "save" command. */ if (cmd == CMD_SAVE) if (*argv == NULL) { FATAL(ep, ebuf, gettext( "Must specify a specific " "SA type for save.\n")); } else { argv++; } } switch (cmd) { case CMD_FLUSH: if (!cflag) doflush(satype); /* * If this was called because of an entry in a cmd file * then this action needs to be counted to prevent * do_interactive() treating this as an error. */ lines_added++; break; case CMD_ADD: case CMD_UPDATE: /* * NOTE: Shouldn't allow ADDs or UPDATEs with keying material * from the command line. */ if (!interactive) { errx(1, gettext( "can't do ADD or UPDATE from the command line.\n")); } if (satype == SADB_SATYPE_UNSPEC) { FATAL(ep, ebuf, gettext( "Must specify a specific SA type.")); /* NOTREACHED */ } /* Parse for extensions, including keying material. */ doaddup(cmd, satype, argv, ebuf); break; case CMD_DELETE: case CMD_GET: if (satype == SADB_SATYPE_UNSPEC) { FATAL(ep, ebuf, gettext( "Must specify a single SA type.")); /* NOTREACHED */ } /* Parse for bare minimum to locate an SA. */ dodelget(cmd, satype, argv, ebuf); break; case CMD_DUMP: if (read_cmdfile) ERROR(ep, ebuf, gettext("Dump not appropriate in " "config file.")); else dodump(satype, NULL); break; case CMD_SAVE: if (read_cmdfile) { ERROR(ep, ebuf, gettext("Save not appropriate in " "config file.")); } else { mask_signals(B_FALSE); /* Mask signals */ dodump(satype, opensavefile(argv[0])); mask_signals(B_TRUE); /* Unmask signals */ } break; default: warnx(gettext("Unknown command (%s).\n"), *(argv - ((satype == SADB_SATYPE_UNSPEC) ? 1 : 2))); usage(); } handle_errors(ep, ebuf, B_FALSE, B_FALSE); } int main(int argc, char *argv[]) { int ch; FILE *infile = stdin, *savefile; boolean_t dosave = B_FALSE, readfile = B_FALSE; char *configfile = NULL; (void) setlocale(LC_ALL, ""); #if !defined(TEXT_DOMAIN) #define TEXT_DOMAIN "SYS_TEST" #endif (void) textdomain(TEXT_DOMAIN); /* * Check to see if the command is being run from smf(5). */ my_fmri = getenv("SMF_FMRI"); openlog("ipseckey", LOG_CONS, LOG_AUTH); if (getuid() != 0) { errx(1, "Insufficient privileges to run ipseckey."); } /* umask me to paranoid, I only want to create files read-only */ (void) umask((mode_t)00377); while ((ch = getopt(argc, argv, "pnvf:s:c:")) != EOF) switch (ch) { case 'p': pflag = B_TRUE; break; case 'n': nflag = B_TRUE; break; case 'v': vflag = B_TRUE; break; case 'c': cflag = B_TRUE; /* FALLTHRU */ case 'f': if (dosave) usage(); infile = fopen(optarg, "r"); if (infile == NULL) { EXIT_BADCONFIG2("Unable to open configuration " "file: %s\n", optarg); } configfile = strdup(optarg); readfile = B_TRUE; break; case 's': if (readfile) usage(); dosave = B_TRUE; savefile = opensavefile(optarg); break; default: usage(); } argc -= optind; argv += optind; mypid = getpid(); keysock = socket(PF_KEY, SOCK_RAW, PF_KEY_V2); if (keysock == -1) { if (errno == EPERM) { EXIT_BADPERM("Insufficient privileges to open " "PF_KEY socket.\n"); } else { /* some other reason */ EXIT_FATAL("Opening PF_KEY socket"); } } if (dosave) { mask_signals(B_FALSE); /* Mask signals */ dodump(SADB_SATYPE_UNSPEC, savefile); mask_signals(B_TRUE); /* Unmask signals */ EXIT_OK(NULL); } /* * When run from smf(5) flush any existing SA's first * otherwise you will end up in maintenance mode. */ if ((my_fmri != NULL) && readfile) { (void) fprintf(stdout, gettext( "Flushing existing SA's before adding new SA's\n")); (void) fflush(stdout); doflush(SADB_SATYPE_UNSPEC); } if (infile != stdin || *argv == NULL) { /* Go into interactive mode here. */ do_interactive(infile, configfile, "ipseckey> ", my_fmri, parseit); } parseit(argc, argv, NULL, B_FALSE); return (0); }