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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 | #include <sys/types.h> #include <sys/socket.h> #include <net/if_dl.h> #include <netinet/in.h> #include <arpa/inet.h> #include <string.h> #include <stdio.h> #include <darwintest.h> T_DECL(link_ntoa_basic, "link_ntoa converts to proper string") { // u_char sdl_len; /* Total length of sockaddr */ // u_char sdl_family; /* AF_LINK */ // u_short sdl_index; /* if != 0, system given index for interface */ // u_char sdl_type; /* interface type */ // u_char sdl_nlen; /* interface name length, no trailing 0 reqd. */ // u_char sdl_alen; /* link level address length */ // u_char sdl_slen; /* link layer selector length */ // char sdl_data[12]; /* minimum work area, can be larger; // contains both if name and ll address */ struct sockaddr_dl sad; bzero(&sad, sizeof(sad)); sad.sdl_nlen = 3; sad.sdl_len = 0; sad.sdl_data[0] = 'l'; sad.sdl_data[1] = 'e'; sad.sdl_data[2] = '0'; sad.sdl_data[3] = 0x01; sad.sdl_data[4] = 0x80; sad.sdl_data[5] = 0xc2; sad.sdl_data[6] = 0x00; sad.sdl_data[7] = 0x00; sad.sdl_data[8] = 0x02; sad.sdl_data[9] = 0xaa; sad.sdl_data[10] = 0xbb; sad.sdl_data[11] = 0xcc; sad.sdl_alen = 6; char *foo = link_ntoa(&sad); T_EXPECT_EQ_STR("le0:1.80.c2.0.0.2", foo, NULL); } T_DECL(link_ntoa_overflow, "link_ntoa try to overflow") { char sockraw[64]; struct sockaddr_dl *sad; sad = (struct sockaddr_dl *)&sockraw; bzero(sad, sizeof(*sad)); sad->sdl_nlen = 3; sad->sdl_len = 0; sad->sdl_data[0] = 'l'; sad->sdl_data[1] = 'e'; sad->sdl_data[2] = '0'; sad->sdl_data[3] = 0x11; sad->sdl_data[4] = 0x80; sad->sdl_data[5] = 0xc2; sad->sdl_data[6] = 0x11; sad->sdl_data[7] = 0x11; sad->sdl_data[8] = 0xa2; sad->sdl_data[9] = 0xaa; sad->sdl_data[10] = 0xbb; sad->sdl_data[11] = 0xcc; sockraw[20] = 0xdd; sockraw[21] = 0xee; sockraw[22] = 0xff; sockraw[23] = 0x1a; sockraw[24] = 0x1b; sockraw[25] = 0x1c; sockraw[26] = 0x1d; sockraw[27] = 0x1e; sockraw[28] = 0x1f; sockraw[29] = 0x2a; sockraw[30] = 0x2b; sockraw[31] = 0x2c; /* set the length to something that will fit in the buffer */ sad->sdl_alen = 20; char *foo = link_ntoa(sad); char over = foo[64]; char over2 = foo[65]; /* this string should be 66 bytes long and exceed the buffer */ sad->sdl_alen = 21; foo = link_ntoa(sad); T_EXPECT_EQ_STR("", foo, NULL); T_EXPECT_EQ(over, foo[64], "did not overflow"); T_EXPECT_EQ(over2, foo[65], "did not overflow either"); } T_DECL(inet_ntop, "inet_ntop") { char *addresses4[] = { "1.2.3.4", "10.0.0.1", "2.2.2.2" }; char *addresses6[] = { "2001:db8:85a3::8a2e:370:7334", "::1", "::" }; for (int i = 0; i < sizeof(addresses4)/sizeof(addresses4[0]); i++){ struct in_addr addr4; char buf[64]; T_EXPECT_EQ(inet_pton(AF_INET, addresses4[i], &addr4), 1, "inet_pton(AF_INET, %s)", addresses4[i]); char *str = inet_ntop(AF_INET, &addr4, buf, sizeof(buf)); T_EXPECT_NOTNULL(str, "inet_ntop(AF_INET) of %s", addresses4[i]); T_EXPECT_EQ_STR(str, addresses4[i], "round-trip of %s", addresses4[i]); } for (int i = 0; i < sizeof(addresses6)/sizeof(addresses6[0]); i++){ struct in6_addr addr6; char buf[64]; T_EXPECT_EQ(inet_pton(AF_INET6, addresses6[i], &addr6), 1, "inet_pton(AF_INET6, %s)", addresses6[i]); char *str = inet_ntop(AF_INET6, &addr6, buf, sizeof(buf)); T_EXPECT_NOTNULL(str, "inet_ntop(AF_INET6) of %s", addresses6[i]); T_EXPECT_EQ_STR(str, addresses6[i], "round-trip of %s", addresses6[i]); } } struct testcase { const char *in_addr; const char *expected_out_addr; }; static const struct testcase test_addrs[] = { { "1:2:3:4:5::1.2.3.4", "1:2:3:4:5:0:102:304" }, { "1:0:3:0:5:0:7:8", "1:0:3:0:5:0:7:8" }, { "0:0:3:0:0:0:7:8", "0:0:3::7:8" }, { "0:0:3:0:5:0:7:8", "::3:0:5:0:7:8" }, { "0:0:0:0:0:0:0:0", "::" }, { "0:0:0:0:0:1:0:0", "::1:0:0" }, { "1:0:0:0:0:0:0:0", "1::" }, { "0:0:0:1:0:0:0:0", "0:0:0:1::" }, { "1:0:0:0:0:0:0:1", "1::1" }, { "1:2:3:4:5:6:0:0", "1:2:3:4:5:6::" }, { "1:2:3:4:5:0:0:0", "1:2:3:4:5::" }, }; T_DECL(inet_ntop_resolve_zeroes, "Check for proper behavior when shortening zeroes w/ inet_ntop") { // Take ip addrs as text, convert to binary and back. // Upon converting back, they should adhere to the IPv6 guidelines. for (int i = 0; i < sizeof(test_addrs)/sizeof(struct testcase); ++i) { struct in6_addr addr6; char buf[64]; char *in_addr = test_addrs[i].in_addr; char *expected_out_addr = test_addrs[i].expected_out_addr; T_EXPECT_EQ(inet_pton(AF_INET6, in_addr, &addr6), 1, "inet_pton(AF_INET6, %s)", in_addr); char *str = inet_ntop(AF_INET6, &addr6, buf, sizeof(buf)); T_EXPECT_NOTNULL(str, "inet_ntop(AF_INET6) of %s", in_addr); T_EXPECT_EQ_STR(str, expected_out_addr, NULL); } // Same test, but step through the possible range of ipv6 values. for (int i = 0x0; i < 0x10000; ++i) { struct in6_addr addr6; char buf[64]; char in_addr[64]; sprintf(in_addr, "1:1:1:1:1:1:1:%x", i); char *expected_out_addr = in_addr; T_QUIET; T_EXPECT_EQ(inet_pton(AF_INET6, in_addr, &addr6), 1, "inet_pton(AF_INET6, %s)", in_addr); char *str = inet_ntop(AF_INET6, &addr6, buf, sizeof(buf)); T_QUIET; T_EXPECT_NOTNULL(str, "inet_ntop(AF_INET6) of %s", in_addr); T_QUIET; T_EXPECT_EQ_STR(str, expected_out_addr, NULL); } T_PASS("Passed ipv6 value testing"); } static void conv(const char *addr) { int ret; void *retp; struct in6_addr addr6; memset(&addr6, 0, sizeof addr6); ret = inet_pton(AF_INET6, addr, &addr6); T_ASSERT_EQ(ret, 1, "inet_pton"); T_LOG("%s: %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x\n", addr, ((unsigned char *) &addr6)[0], ((unsigned char *) &addr6)[1], ((unsigned char *) &addr6)[2], ((unsigned char *) &addr6)[3], ((unsigned char *) &addr6)[4], ((unsigned char *) &addr6)[5], ((unsigned char *) &addr6)[6], ((unsigned char *) &addr6)[7], ((unsigned char *) &addr6)[8], ((unsigned char *) &addr6)[9], ((unsigned char *) &addr6)[10], ((unsigned char *) &addr6)[11], ((unsigned char *) &addr6)[12], ((unsigned char *) &addr6)[13], ((unsigned char *) &addr6)[14], ((unsigned char *) &addr6)[15]); char buf6[INET6_ADDRSTRLEN]; memset(buf6, 0, sizeof buf6); retp = inet_ntop(AF_INET6, &addr6, buf6, (socklen_t) sizeof buf6); T_ASSERT_NOTNULL(retp, "inet_ntop"); T_LOG("%s: %s\n", addr, buf6); T_EXPECT_EQ_STR(addr, buf6, NULL); } T_DECL(inet_ntop_PR46867324, "Regression test for PR46867324") { conv("2001:db8::1"); conv("::192.168.1.2"); conv("::ffff:10.11.12.13"); } |