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bugfix: packet parser adds checks for packets with UDP port 2152 but not GTP-U

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This commit is contained in:
luwenpeng
2024-08-14 17:24:26 +08:00
parent 5abf0d7942
commit 42f44b53b1
4 changed files with 304 additions and 22 deletions
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87
src/packet/test/gtest_gtp1_utils.cpp
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@@ -186,15 +186,15 @@ TEST(GTP1_UTILS, C_SET)
* TEID: 0x001e849a (2000026)
*/
unsigned char gtp1_u[] = {
unsigned char gtp1_u1[] = {
0x30, 0xff, 0x00, 0x28, 0x00, 0x1e, 0x84, 0x9a};
TEST(GTP1_UTILS, U_GET)
TEST(GTP1_UTILS, U1_GET)
{
const struct gtp1_hdr *hdr = (struct gtp1_hdr *)gtp1_u;
const struct gtp1_hdr *hdr = (struct gtp1_hdr *)gtp1_u1;
// GTP Fixed Header Length + GTPv1-U Optional Headers + GTPv1-U Extension Headers
EXPECT_TRUE(calc_gtp1_hdr_len((const char *)gtp1_u, sizeof(gtp1_u)) == 8);
EXPECT_TRUE(calc_gtp1_hdr_len((const char *)gtp1_u1, sizeof(gtp1_u1)) == 8);
EXPECT_TRUE(gtp1_hdr_get_flags(hdr) == 0x30);
EXPECT_TRUE(gtp1_hdr_get_version(hdr) == 1);
EXPECT_TRUE(gtp1_hdr_get_proto(hdr) == 1);
@@ -214,7 +214,7 @@ TEST(GTP1_UTILS, U_GET)
printf("%s\n", buff);
}
TEST(GTP1_UTILS, U_SET)
TEST(GTP1_UTILS, U1_SET)
{
char buff[8] = {0};
@@ -233,7 +233,82 @@ TEST(GTP1_UTILS, U_SET)
gtp1_hdr_set_npdu(hdr, 0);
gtp1_hdr_set_next_ext_type(hdr, 0);
EXPECT_TRUE(memcmp(buff, gtp1_u, 8) == 0);
EXPECT_TRUE(memcmp(buff, gtp1_u1, 8) == 0);
}
/*
* User Datagram Protocol, Src Port: 2152, Dst Port: 2152
* GPRS Tunneling Protocol
* Flags: 0x34
* 001. .... = Version: GTP release 99 version (1)
* ...1 .... = Protocol type: GTP (1)
* .... 0... = Reserved: 0
* .... .1.. = Is Next Extension Header present?: Yes
* .... ..0. = Is Sequence Number present?: No
* .... ...0 = Is N-PDU number present?: No
* Message Type: T-PDU (0xff)
* Length: 445
* TEID: 0x01447453 (21263443)
* Next extension header type: PDU Session container (0x85)
* Extension header (PDU Session container)
* Extension Header Length: 1
* PDU Session Container
* 0001 .... = PDU Type: UL PDU SESSION INFORMATION (1)
* .... 0000 = Spare: 0x0
* 00.. .... = Spare: 0x0
* ..00 0001 = QoS Flow Identifier (QFI): 1
* Next extension header type: No more extension headers (0x00)
*/
unsigned char gtp1_u2[] = {
0x34, 0xff, 0x01, 0xbd, 0x01, 0x44, 0x74, 0x53, 0x00, 0x00, 0x00, 0x85, 0x01, 0x10, 0x01, 0x00};
TEST(GTP1_UTILS, U2_GET)
{
const struct gtp1_hdr *hdr = (struct gtp1_hdr *)gtp1_u2;
// GTP Fixed Header Length + GTPv1-U Optional Headers + GTPv1-U Extension Headers
EXPECT_TRUE(calc_gtp1_hdr_len((const char *)gtp1_u2, sizeof(gtp1_u2)) == 16);
EXPECT_TRUE(gtp1_hdr_get_flags(hdr) == 0x34);
EXPECT_TRUE(gtp1_hdr_get_version(hdr) == 1);
EXPECT_TRUE(gtp1_hdr_get_proto(hdr) == 1);
EXPECT_TRUE(gtp1_hdr_get_reserved(hdr) == 0);
EXPECT_TRUE(gtp1_hdr_get_ext_flag(hdr) == 1);
EXPECT_TRUE(gtp1_hdr_get_seq_flag(hdr) == 0);
EXPECT_TRUE(gtp1_hdr_get_npdu_flag(hdr) == 0);
EXPECT_TRUE(gtp1_hdr_get_msg_type(hdr) == 0xff);
EXPECT_TRUE(gtp1_hdr_get_msg_len(hdr) == 445);
EXPECT_TRUE(gtp1_hdr_get_teid(hdr) == 21263443);
EXPECT_TRUE(gtp1_hdr_get_seq(hdr) == 0);
EXPECT_TRUE(gtp1_hdr_get_npdu(hdr) == 0);
EXPECT_TRUE(gtp1_hdr_get_next_ext_type(hdr) == 0x85);
char buff[1024] = {0};
gtp1_hdr_to_str(hdr, buff, sizeof(buff));
printf("%s\n", buff);
}
TEST(GTP1_UTILS, U2_SET)
{
char buff[16] = {0};
struct gtp1_hdr *hdr = (struct gtp1_hdr *)buff;
gtp1_hdr_set_flags(hdr, 0x34);
gtp1_hdr_set_version(hdr, 1);
gtp1_hdr_set_proto(hdr, 1);
gtp1_hdr_set_reserved(hdr, 0);
gtp1_hdr_set_ext_flag(hdr, 1);
gtp1_hdr_set_seq_flag(hdr, 0);
gtp1_hdr_set_npdu_flag(hdr, 0);
gtp1_hdr_set_msg_type(hdr, 0xff);
gtp1_hdr_set_msg_len(hdr, 445);
gtp1_hdr_set_teid(hdr, 21263443);
gtp1_hdr_set_seq(hdr, 0);
gtp1_hdr_set_npdu(hdr, 0);
gtp1_hdr_set_next_ext_type(hdr, 0x85);
// not compare the extension header
EXPECT_TRUE(memcmp(buff, gtp1_u2, 12) == 0);
}
int main(int argc, char **argv)