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Diffstat (limited to 'tests/libknot/test_cookies.c')
| -rw-r--r-- | tests/libknot/test_cookies.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/tests/libknot/test_cookies.c b/tests/libknot/test_cookies.c new file mode 100644 index 0000000..82ba502 --- /dev/null +++ b/tests/libknot/test_cookies.c @@ -0,0 +1,174 @@ +/* Copyright (C) 2019 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include <stdlib.h> +#include <string.h> +#include <tap/basic.h> +#include <time.h> + +#include "libknot/cookies.h" +#include "libknot/endian.h" +#include "libknot/errcode.h" +#include "contrib/sockaddr.h" + +static knot_edns_cookie_t client_generate( + struct sockaddr_storage *s_addr, const uint8_t *c_secret, + const char *msg, int code, const char *ref) +{ + knot_edns_cookie_params_t params = { + .server_addr = s_addr, + }; + memcpy(params.secret, c_secret, sizeof(params.secret)); + + knot_edns_cookie_t cc; + int ret = knot_edns_cookie_client_generate(&cc, ¶ms); + is_int(code, ret, "client_generate ret: %s", msg); + if (ret == KNOT_EOK) { + ok(cc.len == KNOT_EDNS_COOKIE_CLNT_SIZE && memcmp(cc.data, ref, cc.len) == 0, + "client_generate value: %s", msg); + } + return cc; +} + +static knot_edns_cookie_t server_generate( + struct sockaddr_storage *c_addr, const uint8_t *s_secret, uint32_t timestamp, + const knot_edns_cookie_t *cc, const char *msg, int code, const char *ref) +{ + knot_edns_cookie_params_t params = { + .version = KNOT_EDNS_COOKIE_VERSION, + .timestamp = timestamp, + .client_addr = c_addr, + }; + memcpy(params.secret, s_secret, sizeof(params.secret)); + + knot_edns_cookie_t sc; + int ret = knot_edns_cookie_server_generate(&sc, cc, ¶ms); + is_int(code, ret, "server_generate ret: %s", msg); + if (ret == KNOT_EOK) { + ok(sc.len == 16 && memcmp(sc.data, ref, sc.len) == 0, + "server_generate value: %s", msg); + } + return sc; +} + +static void client_check( + struct sockaddr_storage *s_addr, const uint8_t *secret, + knot_edns_cookie_t *cc, const char *msg, int code) +{ + knot_edns_cookie_params_t params = { + .server_addr = s_addr, + }; + memcpy(params.secret, secret, sizeof(params.secret)); + + int ret = knot_edns_cookie_client_check(cc, ¶ms); + is_int(code, ret, "client_check ret: %s", msg); +} + +static void server_check( + struct sockaddr_storage *c_addr, const uint8_t *secret, + knot_edns_cookie_t *sc, knot_edns_cookie_t *cc, uint32_t timestamp, + const char *msg, int code) +{ + knot_edns_cookie_params_t params = { + .version = KNOT_EDNS_COOKIE_VERSION, + .timestamp = timestamp, + .lifetime_before = 3600, + .lifetime_after = 300, + .client_addr = c_addr, + }; + memcpy(params.secret, secret, sizeof(params.secret)); + + int ret = knot_edns_cookie_server_check(sc, cc, ¶ms); + is_int(code, ret, "server_check ret: %s", msg); +} + +int main(int argc, char *argv[]) +{ + plan_lazy(); + + knot_edns_cookie_t cc; + knot_edns_cookie_t sc; + + const uint8_t c_secret1[] = "\x3F\x66\x51\xC9\x81\xC1\xD7\x3E\x58\x79\x25\xD2\xF9\x98\x5F\x08"; + const uint8_t c_secret2[] = "\x4C\x31\x15\x17\xFA\xB6\xBF\xE2\xE1\x49\xAB\x74\xEC\x1B\xC9\xA0"; + const uint8_t s_secret1[] = "\xE5\xE9\x73\xE5\xA6\xB2\xA4\x3F\x48\xE7\xDC\x84\x9E\x37\xBF\xCF"; + + struct sockaddr_storage c4_sa1 = { 0 }; + struct sockaddr_storage c4_sa2 = { 0 }; + struct sockaddr_storage s4_sa = { 0 }; + sockaddr_set(&c4_sa1, AF_INET, "198.51.100.100", 0); + sockaddr_set(&c4_sa2, AF_INET, "203.0.113.203", 0); + sockaddr_set(&s4_sa, AF_INET, "192.0.2.53", 0); + + struct sockaddr_storage c6_sa = { 0 }; + struct sockaddr_storage s6_sa = { 0 }; + sockaddr_set(&c6_sa, AF_INET6, "2001:db8:220:1:59de:d0f4:8769:82b8", 0); + sockaddr_set(&s6_sa, AF_INET6, "2001:db8:8f::53", 0); + + const uint8_t c_secret6[] = "\x3B\x49\x5B\xA6\xA5\xB7\xFD\x87\x73\x5B\xD5\x8F\x1E\xF7\x26\x1D"; + const uint8_t s_secret6[] = "\xDD\x3B\xDF\x93\x44\xB6\x78\xB1\x85\xA6\xF5\xCB\x60\xFC\xA7\x15"; + const uint8_t s_secret7[] = "\x44\x55\x36\xBC\xD2\x51\x32\x98\x07\x5A\x5D\x37\x96\x63\xC9\x62"; + + // Learning a new Server Cookie + + cc = client_generate(&s4_sa, c_secret1, "IPv4", KNOT_EOK, + "\x24\x64\xC4\xAB\xCF\x10\xC9\x57"); + client_check(&s4_sa, c_secret1, &cc, "IPv4", KNOT_EOK); + sc = server_generate(&c4_sa1, s_secret1, 1559731985, &cc, "IPv4", KNOT_EOK, + "\x01\x00\x00\x00\x5C\xF7\x9F\x11\x1F\x81\x30\xC3\xEE\xE2\x94\x80"); + server_check(&c4_sa1, s_secret1, &sc, &cc, 1559731985, "IPv4", KNOT_EOK); + + // The same client learning a renewed (fresh) Server Cookie + + server_generate(&c4_sa1, s_secret1, 1559734385, &cc, "IPv4", KNOT_EOK, + "\x01\x00\x00\x00\x5C\xF7\xA8\x71\xD4\xA5\x64\xA1\x44\x2A\xCA\x77"); + + // Another client learning a renewed Server Cookie + + cc = client_generate(&s4_sa, c_secret2, "IPv4", KNOT_EOK, + "\xFC\x93\xFC\x62\x80\x7D\xDB\x86"); + char *sc_reserved = "\x01\xAB\xCD\xEF\x5C\xF7\x8F\x71\xA3\x14\x22\x7B\x66\x79\xEB\xF5"; + memcpy(sc.data, sc_reserved, strlen(sc_reserved)); + server_check(&c4_sa2, s_secret1, &sc, &cc, 1559727985, "IPv4", KNOT_EOK); + + // Version check + + sc.data[0] = 10; + server_check(&c4_sa2, s_secret1, &sc, &cc, 1559727985, "version", KNOT_ENOTSUP); + + // IPv6 query with rolled over secret + + cc = client_generate(&s6_sa, c_secret6, "IPv6", KNOT_EOK, + "\x22\x68\x1A\xB9\x7D\x52\xC2\x98"); + client_check(&s6_sa, c_secret6, &cc, "IPv6", KNOT_EOK); + sc = server_generate(&c6_sa, s_secret6, 1559741817, &cc, "IPv6", KNOT_EOK, + "\x01\x00\x00\x00\x5C\xF7\xC5\x79\x26\x55\x6B\xD0\x93\x4C\x72\xF8"); + server_check(&c6_sa, s_secret6, &sc, &cc, 1559741961, "IPv6", KNOT_EOK); + sc = server_generate(&c6_sa, s_secret7, 1559741961, &cc, "IPv6", KNOT_EOK, + "\x01\x00\x00\x00\x5C\xF7\xC6\x09\xA6\xBB\x79\xD1\x66\x25\x50\x7A"); + + // Past lifetime check + + server_check(&c6_sa, s_secret7, &sc, &cc, 1559741961 + 3600, "last old", KNOT_EOK); + server_check(&c6_sa, s_secret7, &sc, &cc, 1559741961 + 3601, "too old", KNOT_ERANGE); + + // Future lifetime check + + server_check(&c6_sa, s_secret7, &sc, &cc, 1559741961 - 300, "last new", KNOT_EOK); + server_check(&c6_sa, s_secret7, &sc, &cc, 1559741961 - 301, "too new", KNOT_ERANGE); + + return 0; +} |