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tor/src/feature/dirparse/routerparse.c
Nick Mathewson 7113a339dc Avoid a needless decode/re-encode step in assigning onion keys 
Previously we had decoded the asn.1 to get a public key, and then
discarded the asn.1 so that we had to re-encode the key to store it
in the onion_pkey field of a microdesc_t or routerinfo_t.

Now we can just do a tor_memdup() instead, which should be loads
faster.
2018-12-18 18:58:08 -05:00

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/* Copyright (c) 2001 Matej Pfajfar.
* Copyright (c) 2001-2004, Roger Dingledine.
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2018, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file routerparse.c
* \brief Code to parse and validate router descriptors, consenus directories,
* and similar objects.
*
* The objects parsed by this module use a common text-based metaformat,
* documented in dir-spec.txt in torspec.git. This module is itself divided
* into two major kinds of function: code to handle the metaformat, and code
* to convert from particular instances of the metaformat into the
* objects that Tor uses.
*
* The generic parsing code works by calling a table-based tokenizer on the
* input string. Each token corresponds to a single line with a token, plus
* optional arguments on that line, plus an optional base-64 encoded object
* after that line. Each token has a definition in a table of token_rule_t
* entries that describes how many arguments it can take, whether it takes an
* object, how many times it may appear, whether it must appear first, and so
* on.
*
* The tokenizer function tokenize_string() converts its string input into a
* smartlist full of instances of directory_token_t, according to a provided
* table of token_rule_t.
*
* The generic parts of this module additionally include functions for
* finding the start and end of signed information inside a signed object, and
* computing the digest that will be signed.
*
* There are also functions for saving objects to disk that have caused
* parsing to fail.
*
* The specific parts of this module describe conversions between
* particular lists of directory_token_t and particular objects. The
* kinds of objects that can be parsed here are:
* <ul>
* <li>router descriptors (managed from routerlist.c)
* <li>extra-info documents (managed from routerlist.c)
* <li>microdescriptors (managed from microdesc.c)
* <li>vote and consensus networkstatus documents, and the routerstatus_t
* objects that they comprise (managed from networkstatus.c)
* <li>detached-signature objects used by authorities for gathering
* signatures on the networkstatus consensus (managed from dirvote.c)
* <li>authority key certificates (managed from routerlist.c)
* <li>hidden service descriptors (managed from rendcommon.c and rendcache.c)
* </ul>
**/
#define EXPOSE_ROUTERDESC_TOKEN_TABLE
#include "core/or/or.h"
#include "app/config/config.h"
#include "core/or/policies.h"
#include "core/or/versions.h"
#include "feature/dirparse/parsecommon.h"
#include "feature/dirparse/policy_parse.h"
#include "feature/dirparse/routerparse.h"
#include "feature/dirparse/sigcommon.h"
#include "feature/dirparse/unparseable.h"
#include "feature/nodelist/describe.h"
#include "feature/nodelist/nickname.h"
#include "feature/nodelist/routerinfo.h"
#include "feature/nodelist/routerlist.h"
#include "feature/nodelist/torcert.h"
#include "feature/relay/router.h"
#include "lib/crypt_ops/crypto_curve25519.h"
#include "lib/crypt_ops/crypto_ed25519.h"
#include "lib/crypt_ops/crypto_format.h"
#include "lib/memarea/memarea.h"
#include "lib/sandbox/sandbox.h"
#include "core/or/addr_policy_st.h"
#include "feature/nodelist/extrainfo_st.h"
#include "feature/nodelist/routerinfo_st.h"
#include "feature/nodelist/routerlist_st.h"
/****************************************************************************/
/** List of tokens recognized in router descriptors */
const token_rule_t routerdesc_token_table[] = {
T0N("reject", K_REJECT, ARGS, NO_OBJ ),
T0N("accept", K_ACCEPT, ARGS, NO_OBJ ),
T0N("reject6", K_REJECT6, ARGS, NO_OBJ ),
T0N("accept6", K_ACCEPT6, ARGS, NO_OBJ ),
T1_START( "router", K_ROUTER, GE(5), NO_OBJ ),
T01("ipv6-policy", K_IPV6_POLICY, CONCAT_ARGS, NO_OBJ),
T1( "signing-key", K_SIGNING_KEY, NO_ARGS, NEED_KEY_1024 ),
T1( "onion-key", K_ONION_KEY, NO_ARGS, NEED_KEY_1024 ),
T01("ntor-onion-key", K_ONION_KEY_NTOR, GE(1), NO_OBJ ),
T1_END( "router-signature", K_ROUTER_SIGNATURE, NO_ARGS, NEED_OBJ ),
T1( "published", K_PUBLISHED, CONCAT_ARGS, NO_OBJ ),
T01("uptime", K_UPTIME, GE(1), NO_OBJ ),
T01("fingerprint", K_FINGERPRINT, CONCAT_ARGS, NO_OBJ ),
T01("hibernating", K_HIBERNATING, GE(1), NO_OBJ ),
T01("platform", K_PLATFORM, CONCAT_ARGS, NO_OBJ ),
T01("proto", K_PROTO, CONCAT_ARGS, NO_OBJ ),
T01("contact", K_CONTACT, CONCAT_ARGS, NO_OBJ ),
T01("read-history", K_READ_HISTORY, ARGS, NO_OBJ ),
T01("write-history", K_WRITE_HISTORY, ARGS, NO_OBJ ),
T01("extra-info-digest", K_EXTRA_INFO_DIGEST, GE(1), NO_OBJ ),
T01("hidden-service-dir", K_HIDDEN_SERVICE_DIR, NO_ARGS, NO_OBJ ),
T01("identity-ed25519", K_IDENTITY_ED25519, NO_ARGS, NEED_OBJ ),
T01("master-key-ed25519", K_MASTER_KEY_ED25519, GE(1), NO_OBJ ),
T01("router-sig-ed25519", K_ROUTER_SIG_ED25519, GE(1), NO_OBJ ),
T01("onion-key-crosscert", K_ONION_KEY_CROSSCERT, NO_ARGS, NEED_OBJ ),
T01("ntor-onion-key-crosscert", K_NTOR_ONION_KEY_CROSSCERT,
EQ(1), NEED_OBJ ),
T01("allow-single-hop-exits",K_ALLOW_SINGLE_HOP_EXITS, NO_ARGS, NO_OBJ ),
T01("family", K_FAMILY, ARGS, NO_OBJ ),
T01("caches-extra-info", K_CACHES_EXTRA_INFO, NO_ARGS, NO_OBJ ),
T0N("or-address", K_OR_ADDRESS, GE(1), NO_OBJ ),
T0N("opt", K_OPT, CONCAT_ARGS, OBJ_OK ),
T1( "bandwidth", K_BANDWIDTH, GE(3), NO_OBJ ),
A01("@purpose", A_PURPOSE, GE(1), NO_OBJ ),
T01("tunnelled-dir-server",K_DIR_TUNNELLED, NO_ARGS, NO_OBJ ),
END_OF_TABLE
};
/** List of tokens recognized in extra-info documents. */
static token_rule_t extrainfo_token_table[] = {
T1_END( "router-signature", K_ROUTER_SIGNATURE, NO_ARGS, NEED_OBJ ),
T1( "published", K_PUBLISHED, CONCAT_ARGS, NO_OBJ ),
T01("identity-ed25519", K_IDENTITY_ED25519, NO_ARGS, NEED_OBJ ),
T01("router-sig-ed25519", K_ROUTER_SIG_ED25519, GE(1), NO_OBJ ),
T0N("opt", K_OPT, CONCAT_ARGS, OBJ_OK ),
T01("read-history", K_READ_HISTORY, ARGS, NO_OBJ ),
T01("write-history", K_WRITE_HISTORY, ARGS, NO_OBJ ),
T01("dirreq-stats-end", K_DIRREQ_END, ARGS, NO_OBJ ),
T01("dirreq-v2-ips", K_DIRREQ_V2_IPS, ARGS, NO_OBJ ),
T01("dirreq-v3-ips", K_DIRREQ_V3_IPS, ARGS, NO_OBJ ),
T01("dirreq-v2-reqs", K_DIRREQ_V2_REQS, ARGS, NO_OBJ ),
T01("dirreq-v3-reqs", K_DIRREQ_V3_REQS, ARGS, NO_OBJ ),
T01("dirreq-v2-share", K_DIRREQ_V2_SHARE, ARGS, NO_OBJ ),
T01("dirreq-v3-share", K_DIRREQ_V3_SHARE, ARGS, NO_OBJ ),
T01("dirreq-v2-resp", K_DIRREQ_V2_RESP, ARGS, NO_OBJ ),
T01("dirreq-v3-resp", K_DIRREQ_V3_RESP, ARGS, NO_OBJ ),
T01("dirreq-v2-direct-dl", K_DIRREQ_V2_DIR, ARGS, NO_OBJ ),
T01("dirreq-v3-direct-dl", K_DIRREQ_V3_DIR, ARGS, NO_OBJ ),
T01("dirreq-v2-tunneled-dl", K_DIRREQ_V2_TUN, ARGS, NO_OBJ ),
T01("dirreq-v3-tunneled-dl", K_DIRREQ_V3_TUN, ARGS, NO_OBJ ),
T01("entry-stats-end", K_ENTRY_END, ARGS, NO_OBJ ),
T01("entry-ips", K_ENTRY_IPS, ARGS, NO_OBJ ),
T01("cell-stats-end", K_CELL_END, ARGS, NO_OBJ ),
T01("cell-processed-cells", K_CELL_PROCESSED, ARGS, NO_OBJ ),
T01("cell-queued-cells", K_CELL_QUEUED, ARGS, NO_OBJ ),
T01("cell-time-in-queue", K_CELL_TIME, ARGS, NO_OBJ ),
T01("cell-circuits-per-decile", K_CELL_CIRCS, ARGS, NO_OBJ ),
T01("exit-stats-end", K_EXIT_END, ARGS, NO_OBJ ),
T01("exit-kibibytes-written", K_EXIT_WRITTEN, ARGS, NO_OBJ ),
T01("exit-kibibytes-read", K_EXIT_READ, ARGS, NO_OBJ ),
T01("exit-streams-opened", K_EXIT_OPENED, ARGS, NO_OBJ ),
T1_START( "extra-info", K_EXTRA_INFO, GE(2), NO_OBJ ),
END_OF_TABLE
};
#undef T
/* static function prototypes */
static int router_add_exit_policy(routerinfo_t *router,directory_token_t *tok);
static smartlist_t *find_all_exitpolicy(smartlist_t *s);
/** Set <b>digest</b> to the SHA-1 digest of the hash of the first router in
* <b>s</b>. Return 0 on success, -1 on failure.
*/
int
router_get_router_hash(const char *s, size_t s_len, char *digest)
{
return router_get_hash_impl(s, s_len, digest,
"router ","\nrouter-signature", '\n',
DIGEST_SHA1);
}
/** Set <b>digest</b> to the SHA-1 digest of the hash of the <b>s_len</b>-byte
* extrainfo string at <b>s</b>. Return 0 on success, -1 on failure. */
int
router_get_extrainfo_hash(const char *s, size_t s_len, char *digest)
{
return router_get_hash_impl(s, s_len, digest, "extra-info",
"\nrouter-signature",'\n', DIGEST_SHA1);
}
/** Helper: move *<b>s_ptr</b> ahead to the next router, the next extra-info,
* or to the first of the annotations proceeding the next router or
* extra-info---whichever comes first. Set <b>is_extrainfo_out</b> to true if
* we found an extrainfo, or false if found a router. Do not scan beyond
* <b>eos</b>. Return -1 if we found nothing; 0 if we found something. */
static int
find_start_of_next_router_or_extrainfo(const char **s_ptr,
const char *eos,
int *is_extrainfo_out)
{
const char *annotations = NULL;
const char *s = *s_ptr;
s = eat_whitespace_eos(s, eos);
while (s < eos-32) { /* 32 gives enough room for a the first keyword. */
/* We're at the start of a line. */
tor_assert(*s != '\n');
if (*s == '@' && !annotations) {
annotations = s;
} else if (*s == 'r' && !strcmpstart(s, "router ")) {
*s_ptr = annotations ? annotations : s;
*is_extrainfo_out = 0;
return 0;
} else if (*s == 'e' && !strcmpstart(s, "extra-info ")) {
*s_ptr = annotations ? annotations : s;
*is_extrainfo_out = 1;
return 0;
}
if (!(s = memchr(s+1, '\n', eos-(s+1))))
break;
s = eat_whitespace_eos(s, eos);
}
return -1;
}
/** Given a string *<b>s</b> containing a concatenated sequence of router
* descriptors (or extra-info documents if <b>want_extrainfo</b> is set),
* parses them and stores the result in <b>dest</b>. All routers are marked
* running and valid. Advances *s to a point immediately following the last
* router entry. Ignore any trailing router entries that are not complete.
*
* If <b>saved_location</b> isn't SAVED_IN_CACHE, make a local copy of each
* descriptor in the signed_descriptor_body field of each routerinfo_t. If it
* isn't SAVED_NOWHERE, remember the offset of each descriptor.
*
* Returns 0 on success and -1 on failure. Adds a digest to
* <b>invalid_digests_out</b> for every entry that was unparseable or
* invalid. (This may cause duplicate entries.)
*/
int
router_parse_list_from_string(const char **s, const char *eos,
smartlist_t *dest,
saved_location_t saved_location,
int want_extrainfo,
int allow_annotations,
const char *prepend_annotations,
smartlist_t *invalid_digests_out)
{
routerinfo_t *router;
extrainfo_t *extrainfo;
signed_descriptor_t *signed_desc = NULL;
void *elt;
const char *end, *start;
int have_extrainfo;
tor_assert(s);
tor_assert(*s);
tor_assert(dest);
start = *s;
if (!eos)
eos = *s + strlen(*s);
tor_assert(eos >= *s);
while (1) {
char raw_digest[DIGEST_LEN];
int have_raw_digest = 0;
int dl_again = 0;
if (find_start_of_next_router_or_extrainfo(s, eos, &have_extrainfo) < 0)
break;
end = tor_memstr(*s, eos-*s, "\nrouter-signature");
if (end)
end = tor_memstr(end, eos-end, "\n-----END SIGNATURE-----\n");
if (end)
end += strlen("\n-----END SIGNATURE-----\n");
if (!end)
break;
elt = NULL;
if (have_extrainfo && want_extrainfo) {
routerlist_t *rl = router_get_routerlist();
have_raw_digest = router_get_extrainfo_hash(*s, end-*s, raw_digest) == 0;
extrainfo = extrainfo_parse_entry_from_string(*s, end,
saved_location != SAVED_IN_CACHE,
rl->identity_map, &dl_again);
if (extrainfo) {
signed_desc = &extrainfo->cache_info;
elt = extrainfo;
}
} else if (!have_extrainfo && !want_extrainfo) {
have_raw_digest = router_get_router_hash(*s, end-*s, raw_digest) == 0;
router = router_parse_entry_from_string(*s, end,
saved_location != SAVED_IN_CACHE,
allow_annotations,
prepend_annotations, &dl_again);
if (router) {
log_debug(LD_DIR, "Read router '%s', purpose '%s'",
router_describe(router),
router_purpose_to_string(router->purpose));
signed_desc = &router->cache_info;
elt = router;
}
}
if (! elt && ! dl_again && have_raw_digest && invalid_digests_out) {
smartlist_add(invalid_digests_out, tor_memdup(raw_digest, DIGEST_LEN));
}
if (!elt) {
*s = end;
continue;
}
if (saved_location != SAVED_NOWHERE) {
tor_assert(signed_desc);
signed_desc->saved_location = saved_location;
signed_desc->saved_offset = *s - start;
}
*s = end;
smartlist_add(dest, elt);
}
return 0;
}
/** Try to find an IPv6 OR port in <b>list</b> of directory_token_t's
* with at least one argument (use GE(1) in setup). If found, store
* address and port number to <b>addr_out</b> and
* <b>port_out</b>. Return number of OR ports found. */
int
find_single_ipv6_orport(const smartlist_t *list,
tor_addr_t *addr_out,
uint16_t *port_out)
{
int ret = 0;
tor_assert(list != NULL);
tor_assert(addr_out != NULL);
tor_assert(port_out != NULL);
SMARTLIST_FOREACH_BEGIN(list, directory_token_t *, t) {
tor_addr_t a;
maskbits_t bits;
uint16_t port_min, port_max;
tor_assert(t->n_args >= 1);
/* XXXX Prop186 the full spec allows much more than this. */
if (tor_addr_parse_mask_ports(t->args[0], 0,
&a, &bits, &port_min,
&port_max) == AF_INET6 &&
bits == 128 &&
port_min == port_max) {
/* Okay, this is one we can understand. Use it and ignore
any potential more addresses in list. */
tor_addr_copy(addr_out, &a);
*port_out = port_min;
ret = 1;
break;
}
} SMARTLIST_FOREACH_END(t);
return ret;
}
/** Helper function: reads a single router entry from *<b>s</b> ...
* *<b>end</b>. Mallocs a new router and returns it if all goes well, else
* returns NULL. If <b>cache_copy</b> is true, duplicate the contents of
* s through end into the signed_descriptor_body of the resulting
* routerinfo_t.
*
* If <b>end</b> is NULL, <b>s</b> must be properly NUL-terminated.
*
* If <b>allow_annotations</b>, it's okay to encounter annotations in <b>s</b>
* before the router; if it's false, reject the router if it's annotated. If
* <b>prepend_annotations</b> is set, it should contain some annotations:
* append them to the front of the router before parsing it, and keep them
* around when caching the router.
*
* Only one of allow_annotations and prepend_annotations may be set.
*
* If <b>can_dl_again_out</b> is provided, set *<b>can_dl_again_out</b> to 1
* if it's okay to try to download a descriptor with this same digest again,
* and 0 if it isn't. (It might not be okay to download it again if part of
* the part covered by the digest is invalid.)
*/
routerinfo_t *
router_parse_entry_from_string(const char *s, const char *end,
int cache_copy, int allow_annotations,
const char *prepend_annotations,
int *can_dl_again_out)
{
routerinfo_t *router = NULL;
char digest[128];
smartlist_t *tokens = NULL, *exit_policy_tokens = NULL;
directory_token_t *tok;
struct in_addr in;
const char *start_of_annotations, *cp, *s_dup = s;
size_t prepend_len = prepend_annotations ? strlen(prepend_annotations) : 0;
int ok = 1;
memarea_t *area = NULL;
tor_cert_t *ntor_cc_cert = NULL;
/* Do not set this to '1' until we have parsed everything that we intend to
* parse that's covered by the hash. */
int can_dl_again = 0;
crypto_pk_t *rsa_pubkey = NULL;
tor_assert(!allow_annotations || !prepend_annotations);
if (!end) {
end = s + strlen(s);
}
/* point 'end' to a point immediately after the final newline. */
while (end > s+2 && *(end-1) == '\n' && *(end-2) == '\n')
--end;
area = memarea_new();
tokens = smartlist_new();
if (prepend_annotations) {
if (tokenize_string(area,prepend_annotations,NULL,tokens,
routerdesc_token_table,TS_NOCHECK)) {
log_warn(LD_DIR, "Error tokenizing router descriptor (annotations).");
goto err;
}
}
start_of_annotations = s;
cp = tor_memstr(s, end-s, "\nrouter ");
if (!cp) {
if (end-s < 7 || strcmpstart(s, "router ")) {
log_warn(LD_DIR, "No router keyword found.");
goto err;
}
} else {
s = cp+1;
}
if (start_of_annotations != s) { /* We have annotations */
if (allow_annotations) {
if (tokenize_string(area,start_of_annotations,s,tokens,
routerdesc_token_table,TS_NOCHECK)) {
log_warn(LD_DIR, "Error tokenizing router descriptor (annotations).");
goto err;
}
} else {
log_warn(LD_DIR, "Found unexpected annotations on router descriptor not "
"loaded from disk. Dropping it.");
goto err;
}
}
if (router_get_router_hash(s, end - s, digest) < 0) {
log_warn(LD_DIR, "Couldn't compute router hash.");
goto err;
}
{
int flags = 0;
if (allow_annotations)
flags |= TS_ANNOTATIONS_OK;
if (prepend_annotations)
flags |= TS_ANNOTATIONS_OK|TS_NO_NEW_ANNOTATIONS;
if (tokenize_string(area,s,end,tokens,routerdesc_token_table, flags)) {
log_warn(LD_DIR, "Error tokenizing router descriptor.");
goto err;
}
}
if (smartlist_len(tokens) < 2) {
log_warn(LD_DIR, "Impossibly short router descriptor.");
goto err;
}
tok = find_by_keyword(tokens, K_ROUTER);
const int router_token_pos = smartlist_pos(tokens, tok);
tor_assert(tok->n_args >= 5);
router = tor_malloc_zero(sizeof(routerinfo_t));
router->cert_expiration_time = TIME_MAX;
router->cache_info.routerlist_index = -1;
router->cache_info.annotations_len = s-start_of_annotations + prepend_len;
router->cache_info.signed_descriptor_len = end-s;
if (cache_copy) {
size_t len = router->cache_info.signed_descriptor_len +
router->cache_info.annotations_len;
char *signed_body =
router->cache_info.signed_descriptor_body = tor_malloc(len+1);
if (prepend_annotations) {
memcpy(signed_body, prepend_annotations, prepend_len);
signed_body += prepend_len;
}
/* This assertion will always succeed.
* len == signed_desc_len + annotations_len
* == end-s + s-start_of_annotations + prepend_len
* == end-start_of_annotations + prepend_len
* We already wrote prepend_len bytes into the buffer; now we're
* writing end-start_of_annotations -NM. */
tor_assert(signed_body+(end-start_of_annotations) ==
router->cache_info.signed_descriptor_body+len);
memcpy(signed_body, start_of_annotations, end-start_of_annotations);
router->cache_info.signed_descriptor_body[len] = '\0';
tor_assert(strlen(router->cache_info.signed_descriptor_body) == len);
}
memcpy(router->cache_info.signed_descriptor_digest, digest, DIGEST_LEN);
router->nickname = tor_strdup(tok->args[0]);
if (!is_legal_nickname(router->nickname)) {
log_warn(LD_DIR,"Router nickname is invalid");
goto err;
}
if (!tor_inet_aton(tok->args[1], &in)) {
log_warn(LD_DIR,"Router address is not an IP address.");
goto err;
}
router->addr = ntohl(in.s_addr);
router->or_port =
(uint16_t) tor_parse_long(tok->args[2],10,0,65535,&ok,NULL);
if (!ok) {
log_warn(LD_DIR,"Invalid OR port %s", escaped(tok->args[2]));
goto err;
}
router->dir_port =
(uint16_t) tor_parse_long(tok->args[4],10,0,65535,&ok,NULL);
if (!ok) {
log_warn(LD_DIR,"Invalid dir port %s", escaped(tok->args[4]));
goto err;
}
tok = find_by_keyword(tokens, K_BANDWIDTH);
tor_assert(tok->n_args >= 3);
router->bandwidthrate = (int)
tor_parse_long(tok->args[0],10,1,INT_MAX,&ok,NULL);
if (!ok) {
log_warn(LD_DIR, "bandwidthrate %s unreadable or 0. Failing.",
escaped(tok->args[0]));
goto err;
}
router->bandwidthburst =
(int) tor_parse_long(tok->args[1],10,0,INT_MAX,&ok,NULL);
if (!ok) {
log_warn(LD_DIR, "Invalid bandwidthburst %s", escaped(tok->args[1]));
goto err;
}
router->bandwidthcapacity = (int)
tor_parse_long(tok->args[2],10,0,INT_MAX,&ok,NULL);
if (!ok) {
log_warn(LD_DIR, "Invalid bandwidthcapacity %s", escaped(tok->args[1]));
goto err;
}
if ((tok = find_opt_by_keyword(tokens, A_PURPOSE))) {
tor_assert(tok->n_args);
router->purpose = router_purpose_from_string(tok->args[0]);
} else {
router->purpose = ROUTER_PURPOSE_GENERAL;
}
router->cache_info.send_unencrypted =
(router->purpose == ROUTER_PURPOSE_GENERAL) ? 1 : 0;
if ((tok = find_opt_by_keyword(tokens, K_UPTIME))) {
tor_assert(tok->n_args >= 1);
router->uptime = tor_parse_long(tok->args[0],10,0,LONG_MAX,&ok,NULL);
if (!ok) {
log_warn(LD_DIR, "Invalid uptime %s", escaped(tok->args[0]));
goto err;
}
}
if ((tok = find_opt_by_keyword(tokens, K_HIBERNATING))) {
tor_assert(tok->n_args >= 1);
router->is_hibernating
= (tor_parse_long(tok->args[0],10,0,LONG_MAX,NULL,NULL) != 0);
}
tok = find_by_keyword(tokens, K_PUBLISHED);
tor_assert(tok->n_args == 1);
if (parse_iso_time(tok->args[0], &router->cache_info.published_on) < 0)
goto err;
tok = find_by_keyword(tokens, K_ONION_KEY);
if (!crypto_pk_public_exponent_ok(tok->key)) {
log_warn(LD_DIR,
"Relay's onion key had invalid exponent.");
goto err;
}
router->onion_pkey = tor_memdup(tok->object_body, tok->object_size);
router->onion_pkey_len = tok->object_size;
crypto_pk_free(tok->key);
if ((tok = find_opt_by_keyword(tokens, K_ONION_KEY_NTOR))) {
curve25519_public_key_t k;
tor_assert(tok->n_args >= 1);
if (curve25519_public_from_base64(&k, tok->args[0]) < 0) {
log_warn(LD_DIR, "Bogus ntor-onion-key in routerinfo");
goto err;
}
router->onion_curve25519_pkey =
tor_memdup(&k, sizeof(curve25519_public_key_t));
}
tok = find_by_keyword(tokens, K_SIGNING_KEY);
router->identity_pkey = tok->key;
tok->key = NULL; /* Prevent free */
if (crypto_pk_get_digest(router->identity_pkey,
router->cache_info.identity_digest)) {
log_warn(LD_DIR, "Couldn't calculate key digest"); goto err;
}
{
directory_token_t *ed_sig_tok, *ed_cert_tok, *cc_tap_tok, *cc_ntor_tok,
*master_key_tok;
ed_sig_tok = find_opt_by_keyword(tokens, K_ROUTER_SIG_ED25519);
ed_cert_tok = find_opt_by_keyword(tokens, K_IDENTITY_ED25519);
master_key_tok = find_opt_by_keyword(tokens, K_MASTER_KEY_ED25519);
cc_tap_tok = find_opt_by_keyword(tokens, K_ONION_KEY_CROSSCERT);
cc_ntor_tok = find_opt_by_keyword(tokens, K_NTOR_ONION_KEY_CROSSCERT);
int n_ed_toks = !!ed_sig_tok + !!ed_cert_tok +
!!cc_tap_tok + !!cc_ntor_tok;
if ((n_ed_toks != 0 && n_ed_toks != 4) ||
(n_ed_toks == 4 && !router->onion_curve25519_pkey)) {
log_warn(LD_DIR, "Router descriptor with only partial ed25519/"
"cross-certification support");
goto err;
}
if (master_key_tok && !ed_sig_tok) {
log_warn(LD_DIR, "Router descriptor has ed25519 master key but no "
"certificate");
goto err;
}
if (ed_sig_tok) {
tor_assert(ed_cert_tok && cc_tap_tok && cc_ntor_tok);
const int ed_cert_token_pos = smartlist_pos(tokens, ed_cert_tok);
if (ed_cert_token_pos == -1 || router_token_pos == -1 ||
(ed_cert_token_pos != router_token_pos + 1 &&
ed_cert_token_pos != router_token_pos - 1)) {
log_warn(LD_DIR, "Ed25519 certificate in wrong position");
goto err;
}
if (ed_sig_tok != smartlist_get(tokens, smartlist_len(tokens)-2)) {
log_warn(LD_DIR, "Ed25519 signature in wrong position");
goto err;
}
if (strcmp(ed_cert_tok->object_type, "ED25519 CERT")) {
log_warn(LD_DIR, "Wrong object type on identity-ed25519 in decriptor");
goto err;
}
if (strcmp(cc_ntor_tok->object_type, "ED25519 CERT")) {
log_warn(LD_DIR, "Wrong object type on ntor-onion-key-crosscert "
"in decriptor");
goto err;
}
if (strcmp(cc_tap_tok->object_type, "CROSSCERT")) {
log_warn(LD_DIR, "Wrong object type on onion-key-crosscert "
"in decriptor");
goto err;
}
if (strcmp(cc_ntor_tok->args[0], "0") &&
strcmp(cc_ntor_tok->args[0], "1")) {
log_warn(LD_DIR, "Bad sign bit on ntor-onion-key-crosscert");
goto err;
}
int ntor_cc_sign_bit = !strcmp(cc_ntor_tok->args[0], "1");
uint8_t d256[DIGEST256_LEN];
const char *signed_start, *signed_end;
tor_cert_t *cert = tor_cert_parse(
(const uint8_t*)ed_cert_tok->object_body,
ed_cert_tok->object_size);
if (! cert) {
log_warn(LD_DIR, "Couldn't parse ed25519 cert");
goto err;
}
/* makes sure it gets freed. */
router->cache_info.signing_key_cert = cert;
if (cert->cert_type != CERT_TYPE_ID_SIGNING ||
! cert->signing_key_included) {
log_warn(LD_DIR, "Invalid form for ed25519 cert");
goto err;
}
if (master_key_tok) {
/* This token is optional, but if it's present, it must match
* the signature in the signing cert, or supplant it. */
tor_assert(master_key_tok->n_args >= 1);
ed25519_public_key_t pkey;
if (ed25519_public_from_base64(&pkey, master_key_tok->args[0])<0) {
log_warn(LD_DIR, "Can't parse ed25519 master key");
goto err;
}
if (fast_memneq(&cert->signing_key.pubkey,
pkey.pubkey, ED25519_PUBKEY_LEN)) {
log_warn(LD_DIR, "Ed25519 master key does not match "
"key in certificate");
goto err;
}
}
ntor_cc_cert = tor_cert_parse((const uint8_t*)cc_ntor_tok->object_body,
cc_ntor_tok->object_size);
if (!ntor_cc_cert) {
log_warn(LD_DIR, "Couldn't parse ntor-onion-key-crosscert cert");
goto err;
}
if (ntor_cc_cert->cert_type != CERT_TYPE_ONION_ID ||
! ed25519_pubkey_eq(&ntor_cc_cert->signed_key, &cert->signing_key)) {
log_warn(LD_DIR, "Invalid contents for ntor-onion-key-crosscert cert");
goto err;
}
ed25519_public_key_t ntor_cc_pk;
if (ed25519_public_key_from_curve25519_public_key(&ntor_cc_pk,
router->onion_curve25519_pkey,
ntor_cc_sign_bit)<0) {
log_warn(LD_DIR, "Error converting onion key to ed25519");
goto err;
}
if (router_get_hash_impl_helper(s, end-s, "router ",
"\nrouter-sig-ed25519",
' ', LOG_WARN,
&signed_start, &signed_end) < 0) {
log_warn(LD_DIR, "Can't find ed25519-signed portion of descriptor");
goto err;
}
crypto_digest_t *d = crypto_digest256_new(DIGEST_SHA256);
crypto_digest_add_bytes(d, ED_DESC_SIGNATURE_PREFIX,
strlen(ED_DESC_SIGNATURE_PREFIX));
crypto_digest_add_bytes(d, signed_start, signed_end-signed_start);
crypto_digest_get_digest(d, (char*)d256, sizeof(d256));
crypto_digest_free(d);
ed25519_checkable_t check[3];
int check_ok[3];
time_t expires = TIME_MAX;
if (tor_cert_get_checkable_sig(&check[0], cert, NULL, &expires) < 0) {
log_err(LD_BUG, "Couldn't create 'checkable' for cert.");
goto err;
}
if (tor_cert_get_checkable_sig(&check[1],
ntor_cc_cert, &ntor_cc_pk, &expires) < 0) {
log_err(LD_BUG, "Couldn't create 'checkable' for ntor_cc_cert.");
goto err;
}
if (ed25519_signature_from_base64(&check[2].signature,
ed_sig_tok->args[0])<0) {
log_warn(LD_DIR, "Couldn't decode ed25519 signature");
goto err;
}
check[2].pubkey = &cert->signed_key;
check[2].msg = d256;
check[2].len = DIGEST256_LEN;
if (ed25519_checksig_batch(check_ok, check, 3) < 0) {
log_warn(LD_DIR, "Incorrect ed25519 signature(s)");
goto err;
}
rsa_pubkey = router_get_rsa_onion_pkey(router->onion_pkey,
router->onion_pkey_len);
if (check_tap_onion_key_crosscert(
(const uint8_t*)cc_tap_tok->object_body,
(int)cc_tap_tok->object_size,
rsa_pubkey,
&cert->signing_key,
(const uint8_t*)router->cache_info.identity_digest)<0) {
log_warn(LD_DIR, "Incorrect TAP cross-verification");
goto err;
}
/* We check this before adding it to the routerlist. */
router->cert_expiration_time = expires;
}
}
if ((tok = find_opt_by_keyword(tokens, K_FINGERPRINT))) {
/* If there's a fingerprint line, it must match the identity digest. */
char d[DIGEST_LEN];
tor_assert(tok->n_args == 1);
tor_strstrip(tok->args[0], " ");
if (base16_decode(d, DIGEST_LEN,
tok->args[0], strlen(tok->args[0])) != DIGEST_LEN) {
log_warn(LD_DIR, "Couldn't decode router fingerprint %s",
escaped(tok->args[0]));
goto err;
}
if (tor_memneq(d,router->cache_info.identity_digest, DIGEST_LEN)) {
log_warn(LD_DIR, "Fingerprint '%s' does not match identity digest.",
tok->args[0]);
goto err;
}
}
{
const char *version = NULL, *protocols = NULL;
if ((tok = find_opt_by_keyword(tokens, K_PLATFORM))) {
router->platform = tor_strdup(tok->args[0]);
version = tok->args[0];
}
if ((tok = find_opt_by_keyword(tokens, K_PROTO))) {
router->protocol_list = tor_strdup(tok->args[0]);
protocols = tok->args[0];
}
summarize_protover_flags(&router->pv, protocols, version);
}
if ((tok = find_opt_by_keyword(tokens, K_CONTACT))) {
router->contact_info = tor_strdup(tok->args[0]);
}
if (find_opt_by_keyword(tokens, K_REJECT6) ||
find_opt_by_keyword(tokens, K_ACCEPT6)) {
log_warn(LD_DIR, "Rejecting router with reject6/accept6 line: they crash "
"older Tors.");
goto err;
}
{
smartlist_t *or_addresses = find_all_by_keyword(tokens, K_OR_ADDRESS);
if (or_addresses) {
find_single_ipv6_orport(or_addresses, &router->ipv6_addr,
&router->ipv6_orport);
smartlist_free(or_addresses);
}
}
exit_policy_tokens = find_all_exitpolicy(tokens);
if (!smartlist_len(exit_policy_tokens)) {
log_warn(LD_DIR, "No exit policy tokens in descriptor.");
goto err;
}
SMARTLIST_FOREACH(exit_policy_tokens, directory_token_t *, t,
if (router_add_exit_policy(router,t)<0) {
log_warn(LD_DIR,"Error in exit policy");
goto err;
});
policy_expand_private(&router->exit_policy);
if ((tok = find_opt_by_keyword(tokens, K_IPV6_POLICY)) && tok->n_args) {
router->ipv6_exit_policy = parse_short_policy(tok->args[0]);
if (! router->ipv6_exit_policy) {
log_warn(LD_DIR , "Error in ipv6-policy %s", escaped(tok->args[0]));
goto err;
}
}
if (policy_is_reject_star(router->exit_policy, AF_INET, 1) &&
(!router->ipv6_exit_policy ||
short_policy_is_reject_star(router->ipv6_exit_policy)))
router->policy_is_reject_star = 1;
if ((tok = find_opt_by_keyword(tokens, K_FAMILY)) && tok->n_args) {
int i;
router->declared_family = smartlist_new();
for (i=0;i<tok->n_args;++i) {
if (!is_legal_nickname_or_hexdigest(tok->args[i])) {
log_warn(LD_DIR, "Illegal nickname %s in family line",
escaped(tok->args[i]));
goto err;
}
smartlist_add_strdup(router->declared_family, tok->args[i]);
}
}
if (find_opt_by_keyword(tokens, K_CACHES_EXTRA_INFO))
router->caches_extra_info = 1;
if (find_opt_by_keyword(tokens, K_ALLOW_SINGLE_HOP_EXITS))
router->allow_single_hop_exits = 1;
if ((tok = find_opt_by_keyword(tokens, K_EXTRA_INFO_DIGEST))) {
tor_assert(tok->n_args >= 1);
if (strlen(tok->args[0]) == HEX_DIGEST_LEN) {
if (base16_decode(router->cache_info.extra_info_digest, DIGEST_LEN,
tok->args[0], HEX_DIGEST_LEN) != DIGEST_LEN) {
log_warn(LD_DIR,"Invalid extra info digest");
}
} else {
log_warn(LD_DIR, "Invalid extra info digest %s", escaped(tok->args[0]));
}
if (tok->n_args >= 2) {
if (digest256_from_base64(router->cache_info.extra_info_digest256,
tok->args[1]) < 0) {
log_warn(LD_DIR, "Invalid extra info digest256 %s",
escaped(tok->args[1]));
}
}
}
if (find_opt_by_keyword(tokens, K_HIDDEN_SERVICE_DIR)) {
router->wants_to_be_hs_dir = 1;
}
/* This router accepts tunnelled directory requests via begindir if it has
* an open dirport or it included "tunnelled-dir-server". */
if (find_opt_by_keyword(tokens, K_DIR_TUNNELLED) || router->dir_port > 0) {
router->supports_tunnelled_dir_requests = 1;
}
tok = find_by_keyword(tokens, K_ROUTER_SIGNATURE);
if (!router->or_port) {
log_warn(LD_DIR,"or_port unreadable or 0. Failing.");
goto err;
}
/* We've checked everything that's covered by the hash. */
can_dl_again = 1;
if (check_signature_token(digest, DIGEST_LEN, tok, router->identity_pkey, 0,
"router descriptor") < 0)
goto err;
if (!router->platform) {
router->platform = tor_strdup("<unknown>");
}
goto done;
err:
dump_desc(s_dup, "router descriptor");
routerinfo_free(router);
router = NULL;
done:
crypto_pk_free(rsa_pubkey);
tor_cert_free(ntor_cc_cert);
if (tokens) {
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_clear(t));
smartlist_free(tokens);
}
smartlist_free(exit_policy_tokens);
if (area) {
DUMP_AREA(area, "routerinfo");
memarea_drop_all(area);
}
if (can_dl_again_out)
*can_dl_again_out = can_dl_again;
return router;
}
/** Parse a single extrainfo entry from the string <b>s</b>, ending at
* <b>end</b>. (If <b>end</b> is NULL, parse up to the end of <b>s</b>.) If
* <b>cache_copy</b> is true, make a copy of the extra-info document in the
* cache_info fields of the result. If <b>routermap</b> is provided, use it
* as a map from router identity to routerinfo_t when looking up signing keys.
*
* If <b>can_dl_again_out</b> is provided, set *<b>can_dl_again_out</b> to 1
* if it's okay to try to download an extrainfo with this same digest again,
* and 0 if it isn't. (It might not be okay to download it again if part of
* the part covered by the digest is invalid.)
*/
extrainfo_t *
extrainfo_parse_entry_from_string(const char *s, const char *end,
int cache_copy, struct digest_ri_map_t *routermap,
int *can_dl_again_out)
{
extrainfo_t *extrainfo = NULL;
char digest[128];
smartlist_t *tokens = NULL;
directory_token_t *tok;
crypto_pk_t *key = NULL;
routerinfo_t *router = NULL;
memarea_t *area = NULL;
const char *s_dup = s;
/* Do not set this to '1' until we have parsed everything that we intend to
* parse that's covered by the hash. */
int can_dl_again = 0;
if (BUG(s == NULL))
return NULL;
if (!end) {
end = s + strlen(s);
}
/* point 'end' to a point immediately after the final newline. */
while (end > s+2 && *(end-1) == '\n' && *(end-2) == '\n')
--end;
if (router_get_extrainfo_hash(s, end-s, digest) < 0) {
log_warn(LD_DIR, "Couldn't compute router hash.");
goto err;
}
tokens = smartlist_new();
area = memarea_new();
if (tokenize_string(area,s,end,tokens,extrainfo_token_table,0)) {
log_warn(LD_DIR, "Error tokenizing extra-info document.");
goto err;
}
if (smartlist_len(tokens) < 2) {
log_warn(LD_DIR, "Impossibly short extra-info document.");
goto err;
}
/* XXXX Accept this in position 1 too, and ed identity in position 0. */
tok = smartlist_get(tokens,0);
if (tok->tp != K_EXTRA_INFO) {
log_warn(LD_DIR,"Entry does not start with \"extra-info\"");
goto err;
}
extrainfo = tor_malloc_zero(sizeof(extrainfo_t));
extrainfo->cache_info.is_extrainfo = 1;
if (cache_copy)
extrainfo->cache_info.signed_descriptor_body = tor_memdup_nulterm(s,end-s);
extrainfo->cache_info.signed_descriptor_len = end-s;
memcpy(extrainfo->cache_info.signed_descriptor_digest, digest, DIGEST_LEN);
crypto_digest256((char*)extrainfo->digest256, s, end-s, DIGEST_SHA256);
tor_assert(tok->n_args >= 2);
if (!is_legal_nickname(tok->args[0])) {
log_warn(LD_DIR,"Bad nickname %s on \"extra-info\"",escaped(tok->args[0]));
goto err;
}
strlcpy(extrainfo->nickname, tok->args[0], sizeof(extrainfo->nickname));
if (strlen(tok->args[1]) != HEX_DIGEST_LEN ||
base16_decode(extrainfo->cache_info.identity_digest, DIGEST_LEN,
tok->args[1], HEX_DIGEST_LEN) != DIGEST_LEN) {
log_warn(LD_DIR,"Invalid fingerprint %s on \"extra-info\"",
escaped(tok->args[1]));
goto err;
}
tok = find_by_keyword(tokens, K_PUBLISHED);
if (parse_iso_time(tok->args[0], &extrainfo->cache_info.published_on)) {
log_warn(LD_DIR,"Invalid published time %s on \"extra-info\"",
escaped(tok->args[0]));
goto err;
}
{
directory_token_t *ed_sig_tok, *ed_cert_tok;
ed_sig_tok = find_opt_by_keyword(tokens, K_ROUTER_SIG_ED25519);
ed_cert_tok = find_opt_by_keyword(tokens, K_IDENTITY_ED25519);
int n_ed_toks = !!ed_sig_tok + !!ed_cert_tok;
if (n_ed_toks != 0 && n_ed_toks != 2) {
log_warn(LD_DIR, "Router descriptor with only partial ed25519/"
"cross-certification support");
goto err;
}
if (ed_sig_tok) {
tor_assert(ed_cert_tok);
const int ed_cert_token_pos = smartlist_pos(tokens, ed_cert_tok);
if (ed_cert_token_pos != 1) {
/* Accept this in position 0 XXXX */
log_warn(LD_DIR, "Ed25519 certificate in wrong position");
goto err;
}
if (ed_sig_tok != smartlist_get(tokens, smartlist_len(tokens)-2)) {
log_warn(LD_DIR, "Ed25519 signature in wrong position");
goto err;
}
if (strcmp(ed_cert_tok->object_type, "ED25519 CERT")) {
log_warn(LD_DIR, "Wrong object type on identity-ed25519 in decriptor");
goto err;
}
uint8_t d256[DIGEST256_LEN];
const char *signed_start, *signed_end;
tor_cert_t *cert = tor_cert_parse(
(const uint8_t*)ed_cert_tok->object_body,
ed_cert_tok->object_size);
if (! cert) {
log_warn(LD_DIR, "Couldn't parse ed25519 cert");
goto err;
}
/* makes sure it gets freed. */
extrainfo->cache_info.signing_key_cert = cert;
if (cert->cert_type != CERT_TYPE_ID_SIGNING ||
! cert->signing_key_included) {
log_warn(LD_DIR, "Invalid form for ed25519 cert");
goto err;
}
if (router_get_hash_impl_helper(s, end-s, "extra-info ",
"\nrouter-sig-ed25519",
' ', LOG_WARN,
&signed_start, &signed_end) < 0) {
log_warn(LD_DIR, "Can't find ed25519-signed portion of extrainfo");
goto err;
}
crypto_digest_t *d = crypto_digest256_new(DIGEST_SHA256);
crypto_digest_add_bytes(d, ED_DESC_SIGNATURE_PREFIX,
strlen(ED_DESC_SIGNATURE_PREFIX));
crypto_digest_add_bytes(d, signed_start, signed_end-signed_start);
crypto_digest_get_digest(d, (char*)d256, sizeof(d256));
crypto_digest_free(d);
ed25519_checkable_t check[2];
int check_ok[2];
if (tor_cert_get_checkable_sig(&check[0], cert, NULL, NULL) < 0) {
log_err(LD_BUG, "Couldn't create 'checkable' for cert.");
goto err;
}
if (ed25519_signature_from_base64(&check[1].signature,
ed_sig_tok->args[0])<0) {
log_warn(LD_DIR, "Couldn't decode ed25519 signature");
goto err;
}
check[1].pubkey = &cert->signed_key;
check[1].msg = d256;
check[1].len = DIGEST256_LEN;
if (ed25519_checksig_batch(check_ok, check, 2) < 0) {
log_warn(LD_DIR, "Incorrect ed25519 signature(s)");
goto err;
}
/* We don't check the certificate expiration time: checking that it
* matches the cert in the router descriptor is adequate. */
}
}
/* We've checked everything that's covered by the hash. */
can_dl_again = 1;
if (routermap &&
(router = digestmap_get((digestmap_t*)routermap,
extrainfo->cache_info.identity_digest))) {
key = router->identity_pkey;
}
tok = find_by_keyword(tokens, K_ROUTER_SIGNATURE);
if (strcmp(tok->object_type, "SIGNATURE") ||
tok->object_size < 128 || tok->object_size > 512) {
log_warn(LD_DIR, "Bad object type or length on extra-info signature");
goto err;
}
if (key) {
if (check_signature_token(digest, DIGEST_LEN, tok, key, 0,
"extra-info") < 0)
goto err;
if (router)
extrainfo->cache_info.send_unencrypted =
router->cache_info.send_unencrypted;
} else {
extrainfo->pending_sig = tor_memdup(tok->object_body,
tok->object_size);
extrainfo->pending_sig_len = tok->object_size;
}
goto done;
err:
dump_desc(s_dup, "extra-info descriptor");
extrainfo_free(extrainfo);
extrainfo = NULL;
done:
if (tokens) {
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_clear(t));
smartlist_free(tokens);
}
if (area) {
DUMP_AREA(area, "extrainfo");
memarea_drop_all(area);
}
if (can_dl_again_out)
*can_dl_again_out = can_dl_again;
return extrainfo;
}
/** Add an exit policy stored in the token <b>tok</b> to the router info in
* <b>router</b>. Return 0 on success, -1 on failure. */
static int
router_add_exit_policy(routerinfo_t *router, directory_token_t *tok)
{
addr_policy_t *newe;
/* Use the standard interpretation of accept/reject *, an IPv4 wildcard. */
newe = router_parse_addr_policy(tok, 0);
if (!newe)
return -1;
if (! router->exit_policy)
router->exit_policy = smartlist_new();
/* Ensure that in descriptors, accept/reject fields are followed by
* IPv4 addresses, and accept6/reject6 fields are followed by
* IPv6 addresses. Unlike torrcs, descriptor exit policies do not permit
* accept/reject followed by IPv6. */
if (((tok->tp == K_ACCEPT6 || tok->tp == K_REJECT6) &&
tor_addr_family(&newe->addr) == AF_INET)
||
((tok->tp == K_ACCEPT || tok->tp == K_REJECT) &&
tor_addr_family(&newe->addr) == AF_INET6)) {
/* There's nothing the user can do about other relays' descriptors,
* so we don't provide usage advice here. */
log_warn(LD_DIR, "Mismatch between field type and address type in exit "
"policy '%s'. Discarding entire router descriptor.",
tok->n_args == 1 ? tok->args[0] : "");
addr_policy_free(newe);
return -1;
}
smartlist_add(router->exit_policy, newe);
return 0;
}
/** Return a newly allocated smartlist of all accept or reject tokens in
* <b>s</b>.
*/
static smartlist_t *
find_all_exitpolicy(smartlist_t *s)
{
smartlist_t *out = smartlist_new();
SMARTLIST_FOREACH(s, directory_token_t *, t,
if (t->tp == K_ACCEPT || t->tp == K_ACCEPT6 ||
t->tp == K_REJECT || t->tp == K_REJECT6)
smartlist_add(out,t));
return out;
}
/** Called on startup; right now we just handle scanning the unparseable
* descriptor dumps, but hang anything else we might need to do in the
* future here as well.
*/
void
routerparse_init(void)
{
/*
* Check both if the sandbox is active and whether it's configured; no
* point in loading all that if we won't be able to use it after the
* sandbox becomes active.
*/
if (!(sandbox_is_active() || get_options()->Sandbox)) {
dump_desc_init();
}
}
/** Clean up all data structures used by routerparse.c at exit */
void
routerparse_free_all(void)
{
dump_desc_fifo_cleanup();
}
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