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first working example: Two tun devices + nfnetlink-conntrack

This commit is contained in:
Harald Welte 2017-07-06 09:36:55 +01:00
parent 8fd5e2ae6b
commit bae934d467
6 changed files with 53 additions and 22 deletions
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16
testproject/Makefile
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@ -67,34 +67,34 @@ ARCHIVE_DIR = backup
#
# TTCN-3 modules of this project:
TTCN3_MODULES = IPL4asp_Functions.ttcn IPL4asp_PortType.ttcn IPL4asp_Types.ttcn Socket_API_Definitions.ttcn TCCConversion_Functions.ttcn TCCInterface_Functions.ttcn
TTCN3_MODULES = IPL4_example.ttcn NetfilterConntrack_Functions.ttcn TunDevice_PortType.ttcn TunDevice_Types.ttcn UsefulTtcn3Types.ttcn XSD.ttcn http_www_netfilter_org_xml_libnetfilter_conntrack.ttcn
# ASN.1 modules of this project:
ASN1_MODULES =
# C++ source & header files generated from the TTCN-3 & ASN.1 modules of
# this project:
GENERATED_SOURCES = IPL4asp_Functions.cc IPL4asp_PortType.cc IPL4asp_Types.cc Socket_API_Definitions.cc TCCConversion_Functions.cc TCCInterface_Functions.cc
GENERATED_HEADERS = IPL4asp_Functions.hh IPL4asp_PortType.hh IPL4asp_Types.hh Socket_API_Definitions.hh TCCConversion_Functions.hh TCCInterface_Functions.hh
GENERATED_SOURCES = IPL4_example.cc NetfilterConntrack_Functions.cc TunDevice_PortType.cc TunDevice_Types.cc UsefulTtcn3Types.cc XSD.cc http_www_netfilter_org_xml_libnetfilter_conntrack.cc
GENERATED_HEADERS = IPL4_example.hh NetfilterConntrack_Functions.hh TunDevice_PortType.hh TunDevice_Types.hh UsefulTtcn3Types.hh XSD.hh http_www_netfilter_org_xml_libnetfilter_conntrack.hh
# C/C++ Source & header files of Test Ports, external functions and
# other modules:
USER_SOURCES = IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc
USER_HEADERS = IPL4asp_PT.hh IPL4asp_protocol_L234.hh
USER_SOURCES = NetfilterConntrack.cc Socket_API_Definitions.cc TunDevice_PT.cc
USER_HEADERS = Socket_API_Definitions.hh TunDevice_PT.hh
# Object files of this project that are needed for the executable test suite:
OBJECTS = $(GENERATED_OBJECTS) $(USER_OBJECTS)
GENERATED_OBJECTS = IPL4asp_Functions.o IPL4asp_PortType.o IPL4asp_Types.o Socket_API_Definitions.o TCCConversion_Functions.o TCCInterface_Functions.o
GENERATED_OBJECTS = IPL4_example.o NetfilterConntrack_Functions.o TunDevice_PortType.o TunDevice_Types.o UsefulTtcn3Types.o XSD.o http_www_netfilter_org_xml_libnetfilter_conntrack.o
USER_OBJECTS = IPL4asp_PT.o IPL4asp_discovery.o TCCConversion.o TCCInterface.o
USER_OBJECTS = NetfilterConntrack.o Socket_API_Definitions.o TunDevice_PT.o
# Other files of the project (Makefile, configuration files, etc.)
# that will be added to the archived source files:
OTHER_FILES = Makefile
# The name of the executable test suite:
EXECUTABLE = IPL4asp_Functions
EXECUTABLE = IPL4_example

50
testproject/NetfilterConntrack.cc
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@ -20,6 +20,21 @@ namespace NetfilterConntrack__Functions
return NFCT_CB_CONTINUE;
}
struct nfct_handle *_nfct_init(CHARSTRING *ret_val)
{
struct nfct_handle *h;
h = nfct_open(CONNTRACK, 0);
if (!h) {
perror("nfct_open");
return NULL;
}
nfct_callback_register(h, NFCT_T_ALL, cb, (void *) ret_val);
return h;
}
/* external function exposed to TTCN3 */
CHARSTRING f__get__conntracks__xml(void)
{
@ -31,23 +46,38 @@ namespace NetfilterConntrack__Functions
struct nfct_handle *h;
uint32_t family = AF_INET;
int rc;
CHARSTRING ret_val("");
CHARSTRING ret_val("<flows xmlns=\"http://www.netfilter.org/xml/libnetfilter_conntrack\">");
h = nfct_open(CONNTRACK, 0);
if (!h) {
perror("nfct_open");
h = _nfct_init(&ret_val);
rc = nfct_query(h, NFCT_Q_DUMP, &family);
if (rc < 0) {
ret_val += "</flows>";
return ret_val;
}
printf("ret_val=%p\n", &ret_val);
nfct_callback_register(h, NFCT_T_ALL, cb, (void *) &ret_val);
rc = nfct_query(h, NFCT_Q_DUMP, &family);
if (rc < 0)
return ret_val;
nfct_close(h);
ret_val += "</flows>";
return ret_val;
#endif
}
/* get a single conntrack entry for given 5-tuple */
CHARSTRING f_get_conntrack_xml(CHARSTRING& src_ip, CHARSTRING& dst_ip, INTEGER& proto, INTEGER& src_port, INTEGER& dst_port)
{
struct nfct_handle *h;
uint32_t family = AF_INET;
int rc;
CHARSTRING ret_val("<flows xmlns=\"http://www.netfilter.org/xml/libnetfilter_conntrack\">");
h = _nfct_init(&ret_val);
/* FIXME: actually query */
nfct_close(h);
ret_val += "</flows>";
return ret_val;
}
}

1
testproject/NetfilterConntrack_Functions.ttcn
View File

@ -1,5 +1,6 @@
module NetfilterConntrack_Functions {
external function f_get_conntracks_xml() return charstring;
//external function f_get_conntrack_xml(charstring src_ip, charstring dst_ip, integer proto, integer src_port, integer dst_port) return charstring;
}

4
testproject/TunDevice_PT.cc
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@ -93,9 +93,6 @@ TunDevice__PT_PROVIDER::TunDevice__PT_PROVIDER(const char *par_port_name)
tun_data.fd = -1;
tun_data.dev = NULL;
debugging = false;
tun_data.dev = strdup("foo"); /* FIXME */
debugging = true; /* FIXME */
}
TunDevice__PT_PROVIDER::~TunDevice__PT_PROVIDER()
@ -109,6 +106,7 @@ TunDevice__PT_PROVIDER::~TunDevice__PT_PROVIDER()
void TunDevice__PT_PROVIDER::set_parameter(const char *parameter_name,
const char *parameter_value)
{
printf("%s(%s, %s)\n", __func__, parameter_name, parameter_value);
if (!strcmp(parameter_name, "device_name"))
tun_data.dev = strdup(parameter_value);
if (!strcmp(parameter_name, "debugging"))

2
testproject/gen_links.sh
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@ -22,3 +22,5 @@ gen_links $DIR $FILES
DIR=$BASEDIR/titan.Libraries.TCCUsefulFunctions/src
FILES="TCCInterface_Functions.ttcn TCCConversion_Functions.ttcn TCCConversion.cc TCCInterface.cc TCCInterface_ip.h"
gen_links $DIR $FILES
xsd2ttcn libnetfilter_conntrack.xsd

2
testproject/regen_makefile.sh
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@ -2,7 +2,7 @@
FILES="*.ttcn *.cc *.hh"
ttcn3_makefilegen -f $FILES
ttcn3_makefilegen -f IPL4_example.ttcn $FILES
sed -i -e 's/# TTCN3_DIR = /TTCN3_DIR = \/usr/' Makefile
sed -i -e 's/LDFLAGS = /LDFLAGS = -L \/usr\/lib\/titan `pkg-config --libs libnetfilter_conntrack`/' Makefile
sed -i -e 's/TTCN3_LIB = ttcn3-parallel/TTCN3_LIB = ttcn3/' Makefile