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Merge branch 'tor-github/pr/1261'

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This commit is contained in:
George Kadianakis 2019-09-05 17:02:53 +03:00
commit cdd7e88970
5 changed files with 70 additions and 3 deletions
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5
changes/bug27284 Normal file
View File

@ -0,0 +1,5 @@
o Minor bugfixes (ipv6):
- When parsing microdescriptors, we should check the IPv6 exit policy
alongside IPv4. Previously, we checked both exit policies for only
router info structures, while microdescriptors were IPv4-only. Fixes
bug 27284; bugfix on 0.2.3.1-alpha. Patch by Neel Chauhan.

11
src/feature/dirparse/microdesc_parse.c
View File

@ -92,6 +92,12 @@ find_start_of_next_microdesc(const char *s, const char *eos)
#undef NEXT_LINE
}
static inline int
policy_is_reject_star_or_null(struct short_policy_t *policy)
{
return !policy || short_policy_is_reject_star(policy);
}
/** Parse as many microdescriptors as are found from the string starting at
* <b>s</b> and ending at <b>eos</b>. If allow_annotations is set, read any
* annotations we recognize and ignore ones we don't.
@ -250,6 +256,11 @@ microdescs_parse_from_string(const char *s, const char *eos,
md->ipv6_exit_policy = parse_short_policy(tok->args[0]);
}
if (policy_is_reject_star_or_null(md->exit_policy) &&
policy_is_reject_star_or_null(md->ipv6_exit_policy)) {
md->policy_is_reject_star = 1;
}
smartlist_add(result, md);
okay = 1;

2
src/feature/nodelist/microdesc_st.h
View File

@ -33,6 +33,8 @@ struct microdesc_t {
unsigned int no_save : 1;
/** If true, this microdesc has an entry in the microdesc_map */
unsigned int held_in_map : 1;
/** True iff the exit policy for this router rejects everything. */
unsigned int policy_is_reject_star : 1;
/** Reference count: how many node_ts have a reference to this microdesc? */
unsigned int held_by_nodes;

3
src/feature/nodelist/nodelist.c
View File

@ -1424,8 +1424,7 @@ node_exit_policy_rejects_all(const node_t *node)
if (node->ri)
return node->ri->policy_is_reject_star;
else if (node->md)
return node->md->exit_policy == NULL ||
short_policy_is_reject_star(node->md->exit_policy);
return node->md->policy_is_reject_star;
else
return 1;
}

52
src/test/test_microdesc.c
View File

@ -648,6 +648,41 @@ static const char MD_PARSE_TEST_DATA[] =
"ntor-onion-key k2yFqTU2vzMCQDEiE/j9UcEHxKrXMLpB3IL0or09sik=\n"
"id rsa1024 2A8wYpHxnkKJ92orocvIQBzeHlE\n"
"p6 allow 80\n"
/* Good 11: Normal, non-exit relay with ipv6 address */
"onion-key\n"
"-----BEGIN RSA PUBLIC KEY-----\n"
"MIGJAoGBAM7uUtq5F6h63QNYIvC+4NcWaD0DjtnrOORZMkdpJhinXUOwce3cD5Dj\n"
"sgdN1wJpWpTQMXJ2DssfSgmOVXETP7qJuZyRprxalQhaEATMDNJA/66Ml1jSO9mZ\n"
"+8Xb7m/4q778lNtkSbsvMaYD2Dq6k2QQ3kMhr9z8oUtX0XA23+pfAgMBAAE=\n"
"-----END RSA PUBLIC KEY-----\n"
"a [::1:2:3:4]:9090\n"
"a 18.0.0.1:9999\n"
"ntor-onion-key k2yFqTU2vzMCQDEiE/j9UcEHxKrXMLpB3IL0or09sik=\n"
"id rsa1024 2A8wYpHxnkKJ92orocvIQBzeHlE\n"
/* Good 12: Normal, exit relay with ipv6 address */
"onion-key\n"
"-----BEGIN RSA PUBLIC KEY-----\n"
"MIGJAoGBAM7uUtq5F6h63QNYIvC+4NcWaD0DjtnrOORZMkdpJhinXUOwce3cD5Dj\n"
"sgdN1wJpWpTQMXJ2DssfSgmOVXETP7qJuZyRprxalQhaEATMDNJA/66Ml1jSO9mZ\n"
"+8Xb7m/4q778lNtkSbsvMaYD2Dq6k2QQ3kMhr9z8oUtX0XA23+pfAgMBAAE=\n"
"-----END RSA PUBLIC KEY-----\n"
"a [::1:2:3:4]:9090\n"
"a 18.0.0.1:9999\n"
"ntor-onion-key k2yFqTU2vzMCQDEiE/j9UcEHxKrXMLpB3IL0or09sik=\n"
"p accept 20-23,43,53,79-81,88,110,143,194,220,389,443,464,531,543-544\n"
"id rsa1024 2A8wYpHxnkKJ92orocvIQBzeHlE\n"
/* Good 13: Normal, exit relay with only ipv6 exit policy */
"onion-key\n"
"-----BEGIN RSA PUBLIC KEY-----\n"
"MIGJAoGBAM7uUtq5F6h63QNYIvC+4NcWaD0DjtnrOORZMkdpJhinXUOwce3cD5Dj\n"
"sgdN1wJpWpTQMXJ2DssfSgmOVXETP7qJuZyRprxalQhaEATMDNJA/66Ml1jSO9mZ\n"
"+8Xb7m/4q778lNtkSbsvMaYD2Dq6k2QQ3kMhr9z8oUtX0XA23+pfAgMBAAE=\n"
"-----END RSA PUBLIC KEY-----\n"
"a [::1:2:3:4]:9090\n"
"a 18.0.0.1:9999\n"
"ntor-onion-key k2yFqTU2vzMCQDEiE/j9UcEHxKrXMLpB3IL0or09sik=\n"
"p6 accept 20-23,43,53,79-81,88,110,143,194,220,389,443,464,531,543-544\n"
"id rsa1024 2A8wYpHxnkKJ92orocvIQBzeHlE\n"
;
#ifdef HAVE_CFLAG_WOVERLENGTH_STRINGS
ENABLE_GCC_WARNING(overlength-strings)
@ -665,7 +700,7 @@ test_md_parse(void *arg)
smartlist_t *mds = microdescs_parse_from_string(MD_PARSE_TEST_DATA,
NULL, 1, SAVED_NOWHERE,
invalid);
tt_int_op(smartlist_len(mds), OP_EQ, 11);
tt_int_op(smartlist_len(mds), OP_EQ, 14);
tt_int_op(smartlist_len(invalid), OP_EQ, 4);
test_memeq_hex(smartlist_get(invalid,0),
@ -712,6 +747,21 @@ test_md_parse(void *arg)
tt_assert(tor_addr_family(&md->ipv6_addr) == AF_INET6);
tt_int_op(md->ipv6_orport, OP_EQ, 9090);
md = smartlist_get(mds, 11);
tt_assert(tor_addr_family(&md->ipv6_addr) == AF_INET6);
tt_int_op(md->ipv6_orport, OP_EQ, 9090);
tt_int_op(md->policy_is_reject_star, OP_EQ, 1);
md = smartlist_get(mds, 12);
tt_assert(tor_addr_family(&md->ipv6_addr) == AF_INET6);
tt_int_op(md->ipv6_orport, OP_EQ, 9090);
tt_int_op(md->policy_is_reject_star, OP_EQ, 0);
md = smartlist_get(mds, 13);
tt_assert(tor_addr_family(&md->ipv6_addr) == AF_INET6);
tt_int_op(md->ipv6_orport, OP_EQ, 9090);
tt_int_op(md->policy_is_reject_star, OP_EQ, 0);
done:
SMARTLIST_FOREACH(mds, microdesc_t *, mdsc, microdesc_free(mdsc));
smartlist_free(mds);