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open5gs/lib/pfcp/support/pfcp-tlv.py
Sukchan Lee 828fa23d16 Increase Apply Action size to 2 bytes (#1581)
2022-06-06 21:12:18 +09:00

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Python
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# Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
# This file is part of Open5GS.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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/>.
from docx import Document
import re, os, sys, string
import datetime
import getopt
import getpass
version = "0.1.0"
msg_list = {}
type_list = {}
group_list = {}
verbosity = 0
filename = ""
outdir = './'
cachedir = './cache/'
FAIL = '\033[91m'
INFO = '\033[93m'
ENDC = '\033[0m'
def d_print(string):
if verbosity > 0:
sys.stdout.write(string)
def d_info(string):
sys.stdout.write(INFO + string + ENDC + "\n")
def d_error(string):
sys.stderr.write(FAIL + string + ENDC + "\n")
sys.exit(0)
def write_file(f, string):
f.write(string)
d_print(string)
def output_header_to_file(f):
now = datetime.datetime.now()
f.write("""/*
* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
*
* This file is part of Open5GS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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/>.
*/
""")
f.write("/*******************************************************************************\n")
f.write(" * This file had been created by pfcp-tlv.py script v%s\n" % (version))
f.write(" * Please do not modify this file but regenerate it via script.\n")
f.write(" * Created on: %s by %s\n * from %s\n" % (str(now), getpass.getuser(), filename))
f.write(" ******************************************************************************/\n\n")
def usage():
print("Python generating TLV build/parser for PFCP v%s" % (version))
print("Usage: python pfcp-tlv.py [options]")
print("Available options:")
print("-d Enable script debug")
print("-f [file] Input file to parse")
print("-o [dir] Output files to given directory")
print("-c [dir] Cache files to given directory")
print("-h Print this help and return")
def v_upper(v):
return re.sub('3GPP', '', re.sub('\'', '_', re.sub('/', '_', re.sub('-', '_', re.sub(' ', '_', v)))).upper())
def v_lower(v):
return re.sub('3gpp', '', re.sub('\'', '_', re.sub('/', '_', re.sub('-', '_', re.sub(' ', '_', v)))).lower())
def get_cells(cells):
note = cells[0].text
if note.find('NOTE') != -1:
return None
comment = cells[2].text.encode('ascii', 'ignore').decode('utf-8')
comment = re.sub('\n|\"|\'|\\\\', '', comment);
#print comment
ie_type = re.sub('\s*$', '', re.sub('\'\s*\n*\s*\(NOTE.*\)*', '', cells[-1].text))
#if ie_type.find('Usage Report') != -1:
if ie_type == 'Usage Report':
if comment.find('Report Type') != -1:
ie_type = "Usage Report Session Report Request"
elif comment.find('Query URR') != -1:
ie_type = "Usage Report Session Modification Response"
elif comment.find('provisioned ') != -1:
ie_type = "Usage Report Session Deletion Response"
else:
assert False, "Unknown IE type : [Usage Report]"
if ie_type == 'Update BAR':
if comment.find('7.5.4.11-1') != -1:
ie_type = "Update BAR Session Modification Request"
elif comment.find('7.5.9.2-1') != -1:
ie_type = "Update BAR PFCP Session Report Response"
else:
assert False, "Unknown IE type : [Update BAR]"
if ie_type.find('PFD Contents') != -1:
ie_type = 'PFD contents'
elif ie_type.find('UE IP address') != -1:
ie_type = 'UE IP Address'
elif ie_type.find('SxSMReq-Flags') != -1:
ie_type = 'PFCPSMReq-Flags'
elif ie_type.find('PFCPSRRsp-Flags2') != -1:
ie_type = 'PFCPSRRsp-Flags'
elif ie_type.find('IPv4 Configuration Parameters (IP4CP)') != -1:
ie_type = 'IP4CP'
if ie_type not in type_list.keys():
assert False, "Unknown IE type : [" \
+ cells[-1].text + "]" + "(" + ie_type + ")"
presence = cells[1].text
ie_value = re.sub('\s*\n*\s*\([^\)]*\)*', '', cells[0].text)
if ie_value[len(ie_value)-1] == ' ':
ie_value = ie_value[:len(ie_value)-1]
tlv_more = "0" # PFCP has no tlv_more
if ie_type == 'Create PDR' or ie_type == 'Created PDR' or ie_type == 'Update PDR' or ie_type == "Remove PDR":
tlv_more = "7"
if ie_type == 'Create FAR' or ie_type == 'Update FAR' or ie_type == "Remove FAR":
tlv_more = "7"
if ie_type == 'Create URR' or ie_type == 'Update URR' or ie_type == "Remove URR":
tlv_more = "1"
if ie_type == 'Create QER' or ie_type == 'Update QER' or ie_type == "Remove QER":
tlv_more = "3"
if ie_type == 'User Plane IP Resource Information':
tlv_more = "3"
if ie_type == 'SDF Filter':
tlv_more = "7"
if (ie_type == 'Usage Report Session Report Request' or
ie_type == 'Usage Report Session Deletion Response' or
ie_type == 'Usage Report Session Modification Response'):
tlv_more = "7"
if ie_type == 'URR ID' and comment.find('Several IEs within the same IE type may be present') != -1:
tlv_more = "7"
if int(tlv_more) > int(type_list[ie_type]["max_tlv_more"]):
type_list[ie_type]["max_tlv_more"] = tlv_more
write_file(f, "type_list[\"" + ie_type + "\"][\"max_tlv_more\"] = \"" + tlv_more + "\"\n")
return { "ie_type" : ie_type, "ie_value" : ie_value, "presence" : presence, "tlv_more" : tlv_more, "comment" : comment }
def write_cells_to_file(name, cells):
write_file(f, name + ".append({ \"ie_type\" : \"" + cells["ie_type"] + \
"\", \"ie_value\" : \"" + cells["ie_value"] + \
"\", \"presence\" : \"" + cells["presence"] + \
"\", \"tlv_more\" : \"" + cells["tlv_more"] + \
"\", \"comment\" : \"" + cells["comment"] + "\"})\n")
try:
opts, args = getopt.getopt(sys.argv[1:], "df:ho:c:", ["debug", "file", "help", "output", "cache"])
except getopt.GetoptError as err:
# print help information and exit:
usage()
sys.exit(2)
for o, a in opts:
if o in ("-d", "--debug"):
verbosity = 1
if o in ("-f", "--file"):
filename = a
if o in ("-o", "--output"):
outdir = a
if outdir.rfind('/') != len(outdir):
outdir += '/'
if o in ("-c", "--cache"):
cachedir = a
if cachedir.rfind('/') != len(cachedir):
cachedir += '/'
if o in ("-h", "--help"):
usage()
sys.exit(2)
if os.path.isfile(filename) and os.access(filename, os.R_OK):
file = open(filename, 'r')
else:
d_error("Cannot find file : " + filename)
d_info("[Message List]")
cachefile = cachedir + 'tlv-msg-list.py'
if os.path.isfile(cachefile) and os.access(cachefile, os.R_OK):
exec(open(cachefile).read())
print("Read from " + cachefile)
else:
document = Document(filename)
f = open(cachefile, 'w')
msg_table = ""
for i, table in enumerate(document.tables):
try:
cell = table.rows[0].cells[0]
except:
continue;
else:
if cell.text.find('Message Type value') != -1:
msg_table = table
d_print("Table Index = %d\n" % i)
for row in msg_table.rows[2:-3]:
key = row.cells[1].text
type = row.cells[0].text
if type.isdigit() is False:
continue
if key.find('Reserved') != -1:
continue
key = re.sub('\s*\n*\s*\([^\)]*\)*', '', key)
msg_list[key] = { "type": type }
write_file(f, "msg_list[\"" + key + "\"] = { \"type\" : \"" + type + "\" }\n")
f.close()
d_info("[IE Type List]")
cachefile = cachedir + 'tlv-type-list.py'
if os.path.isfile(cachefile) and os.access(cachefile, os.R_OK):
exec(open(cachefile).read())
print("Read from " + cachefile)
else:
document = Document(filename)
f = open(cachefile, 'w')
ie_table = ""
for i, table in enumerate(document.tables):
try:
cell = table.rows[0].cells[0]
except:
pass
else:
if cell.text.find('IE Type value') != -1:
ie_table = table
d_print("Table Index = %d\n" % i)
for row in ie_table.rows[1:-1]:
key = row.cells[1].text
if key.find('Reserved') != -1:
continue
key = re.sub('\(', '', key)
key = re.sub('\)', '', key)
key = re.sub('\s*$', '', key)
type = row.cells[0].text
type_list[key] = { "type": type , "max_tlv_more" : "0" }
write_file(f, "type_list[\"" + key + "\"] = { \"type\" : \"" + type)
write_file(f, "\", \"max_tlv_more\" : \"0\" }\n")
f.close()
d_info("[Group IE List]")
cachefile = cachedir + 'tlv-group-list.py'
if os.path.isfile(cachefile) and os.access(cachefile, os.R_OK):
exec(open(cachefile).read())
print("Read from " + cachefile)
else:
document = Document(filename)
f = open(cachefile, 'w')
for i, table in enumerate(document.tables):
try:
cell = table.rows[0].cells[0]
except:
pass
else:
if cell.text.find('Octet') != -1 and \
table.rows[0].cells[1].text.find('Outer Header to be created') == -1:
num = 0;
if len(table.rows[0].cells) > 2 and table.rows[0].cells[2].text.find('IE Type') != -1:
num = 2
elif len(table.rows[0].cells) > 3 and table.rows[0].cells[3].text.find('IE Type') != -1:
num = 3
elif len(table.rows[0].cells) > 4 and table.rows[0].cells[4].text.find('IE Type') != -1:
num = 4
if num == 0:
continue;
row = table.rows[0];
d_print("Table Index = %d[%s]\n" % (i, row.cells[num].text))
if len(re.findall('\d+', row.cells[num].text)) == 0:
continue;
ie_type = re.findall('\d+', row.cells[num].text)[-1]
ie_name = re.sub('\s*IE Type.*', '', row.cells[num].text)
d_print("TYPE:%s NAME:%s\n" % (ie_type, ie_name))
# SKIP Access Forwarding Action Information
if (int(ie_type) == 78):
ie_name = "Usage Report Session Modification Response"
elif (int(ie_type) == 79):
ie_name = "Usage Report Session Deletion Response"
elif (int(ie_type) == 80):
ie_name = "Usage Report Session Report Request"
elif (int(ie_type) == 86):
ie_name = "Update BAR Session Modification Request"
elif (int(ie_type) == 12):
ie_name = "Update BAR PFCP Session Report Response"
if ie_name.find('Access Forwarding Action Information 2') != -1:
ie_idx = str(int(ie_type)+100)
group_list[ie_name] = { "index" : ie_idx, "type" : ie_type, "ies" : ies }
write_file(f, "group_list[\"" + ie_name + "\"] = { \"index\" : \"" + ie_idx + "\", \"type\" : \"" + ie_type + "\", \"ies\" : ies }\n")
continue
if ie_name not in group_list.keys():
ies = []
write_file(f, "ies = []\n")
for row in table.rows[4:]:
cells = get_cells(row.cells)
if cells is None:
continue
ies.append(cells)
write_cells_to_file("ies", cells)
ie_idx = str(int(ie_type)+100)
group_list[ie_name] = { "index" : ie_idx, "type" : ie_type, "ies" : ies }
write_file(f, "group_list[\"" + ie_name + "\"] = { \"index\" : \"" + ie_idx + "\", \"type\" : \"" + ie_type + "\", \"ies\" : ies }\n")
f.close()
msg_list["PFCP Heartbeat Request"]["table"] = 7
msg_list["PFCP Heartbeat Response"]["table"] = 8
msg_list["PFCP PFD Management Request"]["table"] = 9
msg_list["PFCP PFD Management Response"]["table"] = 12
msg_list["PFCP Association Setup Request"]["table"] = 13
msg_list["PFCP Association Setup Response"]["table"] = 14
msg_list["PFCP Association Update Request"]["table"] = 15
msg_list["PFCP Association Update Response"]["table"] = 16
msg_list["PFCP Association Release Request"]["table"] = 17
msg_list["PFCP Association Release Response"]["table"] = 18
msg_list["PFCP Version Not Supported Response"]["table"] = 0
msg_list["PFCP Node Report Request"]["table"] = 19
msg_list["PFCP Node Report Response"]["table"] = 21
msg_list["PFCP Session Set Deletion Request"]["table"] = 22
msg_list["PFCP Session Set Deletion Response"]["table"] = 23
msg_list["PFCP Session Establishment Request"]["table"] = 24
msg_list["PFCP Session Establishment Response"]["table"] = 40
msg_list["PFCP Session Modification Request"]["table"] = 45
msg_list["PFCP Session Modification Response"]["table"] = 65
msg_list["PFCP Session Deletion Request"]["table"] = 67
msg_list["PFCP Session Deletion Response"]["table"] = 68
msg_list["PFCP Session Report Request"]["table"] = 70
msg_list["PFCP Session Report Response"]["table"] = 76
for key in msg_list.keys():
if "table" in msg_list[key].keys():
d_info("[" + key + "]")
cachefile = cachedir + "tlv-msg-" + msg_list[key]["type"] + ".py"
if os.path.isfile(cachefile) and os.access(cachefile, os.R_OK):
exec(open(cachefile).read())
print("Read from " + cachefile)
else:
document = Document(filename)
f = open(cachefile, 'w')
table = document.tables[msg_list[key]["table"]]
if key.find('Association') != -1:
start_i = 1
elif key.find('Heartbeat') != -1:
start_i = 1
else:
start_i = 2
ies = []
write_file(f, "ies = []\n")
if key != "PFCP Session Deletion Request" and key != "PFCP Version Not Supported Response":
for row in table.rows[start_i:]:
cells = get_cells(row.cells)
if cells is None:
continue
item = {
"ie_type" : cells["ie_type"],
"ie_value" : cells["ie_value"],
"presence" : cells["presence"],
"tlv_more" : cells["tlv_more"],
"comment" : cells["comment"]
}
ies.append(item)
write_cells_to_file("ies", item)
msg_list[key]["ies"] = ies
write_file(f, "msg_list[key][\"ies\"] = ies\n")
f.close()
type_list["Cause"]["size"] = 1 # Type 19
type_list["Source Interface"]["size"] = 1 # Type 20
type_list["Gate Status"]["size"] = 1 # Type 25
type_list["QER Correlation ID"]["size"] = 4 # Type 28
type_list["Precedence"]["size"] = 4 # Type 29
type_list["Time Threshold"]["size"] = 4 # Type 32
type_list["Reporting Triggers"]["size"] = 3 # Type 37
type_list["Report Type"]["size"] = 1 # Type 39
type_list["Offending IE"]["size"] = 2 # Type 40
type_list["Destination Interface"]["size"] = 1 # Type 42
type_list["Apply Action"]["size"] = 2 # Type 44
type_list["PFCPSMReq-Flags"]["size"] = 1 # Type 49
type_list["PFCPSRRsp-Flags"]["size"] = 1 # Type 50
type_list["PDR ID"]["size"] = 2 # Type 56
type_list["Measurement Method"]["size"] = 1 # Type 62
type_list["Usage Report Trigger"]["size"] = 3 # Type 63
type_list["Measurement Period"]["size"] = 4 # Type 64
type_list["Duration Measurement"]["size"] = 4 # Type 67
type_list["Time of First Packet"]["size"] = 4 # Type 69
type_list["Time of Last Packet"]["size"] = 4 # Type 70
type_list["Quota Holding Time"]["size"] = 4 # Type 71
type_list["Time Quota"]["size"] = 4 # Type 74
type_list["Start Time"]["size"] = 4 # Type 75
type_list["End Time"]["size"] = 4 # Type 76
type_list["URR ID"]["size"] = 4 # Type 81
type_list["BAR ID"]["size"] = 1 # Type 88
type_list["CP Function Features"]["size"] = 1 # Type 89
type_list["Recovery Time Stamp"]["size"] = 4 # Type 96
type_list["UR-SEQN"]["size"] = 4 # Type 104
type_list["FAR ID"]["size"] = 4 # Type 108
type_list["QER ID"]["size"] = 4 # Type 109
type_list["PDN Type"]["size"] = 1 # Type 113
type_list["RQI"]["size"] = 1 # Type 123
type_list["QFI"]["size"] = 1 # Type 124
type_list["Event Quota"]["size"] = 4 # Type 148
type_list["Event Threshold"]["size"] = 4 # Type 149
type_list["Averaging Window"]["size"] = 4 # Type 157
type_list["Paging Policy Indicator"]["size"] = 1 # Type 158
type_list["PFCPSRReq-Flags"]["size"] = 1 # Type 161
type_list["PFCPAUReq-Flags"]["size"] = 1 # Type 162
type_list["Quota Validity Time"]["size"] = 4 # Type 181
f = open(outdir + 'message.h', 'w')
output_header_to_file(f)
f.write("""#if !defined(OGS_PFCP_INSIDE) && !defined(OGS_PFCP_COMPILATION)
#error "This header cannot be included directly."
#endif
#ifndef OGS_PFCP_MESSAGE_H
#define OGS_PFCP_MESSAGE_H
#ifdef __cplusplus
extern "C" {
#endif
/* 5.1 General format */
#define OGS_PFCP_HEADER_LEN 16
#define OGS_PFCP_SEID_LEN 8
typedef struct ogs_pfcp_header_s {
union {
struct {
ED4(uint8_t version:3;,
uint8_t spare1:3;,
uint8_t mp:1;,
uint8_t seid_presence:1;)
};
uint8_t flags;
};
uint8_t type;
uint16_t length;
union {
struct {
uint64_t seid;
/* sqn : 31bit ~ 8bit, spare : 7bit ~ 0bit */
#define OGS_PFCP_XID_TO_SQN(__xid) htobe32(((__xid) << 8))
#define OGS_PFCP_SQN_TO_XID(__sqn) (be32toh(__sqn) >> 8)
uint32_t sqn;
};
/* sqn : 31bit ~ 8bit, spare : 7bit ~ 0bit */
uint32_t sqn_only;
};
} __attribute__ ((packed)) ogs_pfcp_header_t;
/* PFCP message type */
""")
tmp = [(k, v["type"]) for k, v in msg_list.items()]
sorted_msg_list = sorted(tmp, key=lambda tup: int(tup[1]))
for (k, v) in sorted_msg_list:
f.write("#define OGS_" + v_upper(k) + "_TYPE " + v + "\n")
f.write("\n")
tmp = [(k, v["type"]) for k, v in type_list.items()]
sorted_type_list = sorted(tmp, key=lambda tup: int(tup[1]))
for (k, v) in sorted_type_list:
f.write("#define OGS_PFCP_" + v_upper(k) + "_TYPE " + v + "\n")
f.write("\n")
f.write("/* Information Element TLV Descriptor */\n")
for (k, v) in sorted_type_list:
if k in group_list.keys():
continue
f.write("extern ogs_tlv_desc_t ogs_pfcp_tlv_desc_" + v_lower(k) + ";\n")
f.write("\n")
for k, v in group_list.items():
if v_lower(k) == "ethernet_packet_filter":
v["index"] = "1"
if v_lower(k) == "pdi":
v["index"] = "2"
if v_lower(k) == "create_pdr":
v["index"] = "3"
if v_lower(k) == "forwarding_parameters":
v["index"] = "4"
if v_lower(k) == "duplicating_parameters":
v["index"] = "5"
if v_lower(k) == "create_far":
v["index"] = "6"
if v_lower(k) == "update_forwarding_parameters":
v["index"] = "7"
if v_lower(k) == "update_duplicating_parameters":
v["index"] = "8"
if v_lower(k) == "update_far":
v["index"] = "9"
if v_lower(k) == "pfd_context":
v["index"] = "10"
if v_lower(k) == "application_id_s_pfds":
v["index"] = "11"
if v_lower(k) == "ethernet_traffic_information":
v["index"] = "12"
if v_lower(k) == "access_forwarding_action_information_1":
v["index"] = "13"
if v_lower(k) == "access_forwarding_action_information_2":
v["index"] = "14"
if v_lower(k) == "update_access_forwarding_action_information_1":
v["index"] = "15"
if v_lower(k) == "update_access_forwarding_action_information_2":
v["index"] = "16"
tmp = [(k, v["index"]) for k, v in group_list.items()]
sorted_group_list = sorted(tmp, key=lambda tup: int(tup[1]), reverse=False)
f.write("/* Group Information Element TLV Descriptor */\n")
for (k, v) in sorted_group_list:
f.write("extern ogs_tlv_desc_t ogs_pfcp_tlv_desc_" + v_lower(k) + ";\n")
f.write("\n")
f.write("/* Message Descriptor */\n")
for (k, v) in sorted_msg_list:
f.write("extern ogs_tlv_desc_t ogs_pfcp_msg_desc_" + v_lower(k) + ";\n")
f.write("\n")
f.write("/* Structure for Information Element */\n")
for (k, v) in sorted_type_list:
if k in group_list.keys():
continue
if "size" in type_list[k]:
if type_list[k]["size"] == 1:
f.write("typedef ogs_tlv_uint8_t ogs_pfcp_tlv_" + v_lower(k) + "_t;\n")
elif type_list[k]["size"] == 2:
f.write("typedef ogs_tlv_uint16_t ogs_pfcp_tlv_" + v_lower(k) + "_t;\n")
elif type_list[k]["size"] == 3:
f.write("typedef ogs_tlv_uint24_t ogs_pfcp_tlv_" + v_lower(k) + "_t;\n")
elif type_list[k]["size"] == 4:
f.write("typedef ogs_tlv_uint32_t ogs_pfcp_tlv_" + v_lower(k) + "_t;\n")
else:
assert False, "Unknown size = %d for key = %s" % (type_list[k]["size"], k)
else:
f.write("typedef ogs_tlv_octet_t ogs_pfcp_tlv_" + v_lower(k) + "_t;\n")
f.write("\n")
tmp = []
f.write("/* Structure for Group Information Element */\n")
for (k, v) in sorted_group_list:
f.write("typedef struct ogs_pfcp_tlv_" + v_lower(k) + "_s {\n")
f.write(" ogs_tlv_presence_t presence;\n")
for ies in group_list[k]["ies"]:
if type_list[ies["ie_type"]]["max_tlv_more"] != "0" and ies["tlv_more"] != "0":
f.write(" ogs_pfcp_tlv_" + v_lower(ies["ie_type"]) + "_t " + v_lower(ies["ie_value"]) + "[" + str(int(ies["tlv_more"])+1) + "];\n")
else:
f.write(" ogs_pfcp_tlv_" + v_lower(ies["ie_type"]) + "_t " + \
v_lower(ies["ie_value"]) + ";\n")
f.write("} ogs_pfcp_tlv_" + v_lower(k) + "_t;\n")
f.write("\n")
f.write("/* Structure for Message */\n")
for (k, v) in sorted_msg_list:
if "ies" in msg_list[k]:
f.write("typedef struct ogs_" + v_lower(k) + "_s {\n")
for ies in msg_list[k]["ies"]:
if type_list[ies["ie_type"]]["max_tlv_more"] != "0" and ies["tlv_more"] != "0":
f.write(" ogs_pfcp_tlv_" + v_lower(ies["ie_type"]) + "_t " + v_lower(ies["ie_value"]) + "[" + str(int(ies["tlv_more"])+1) + "];\n")
else:
f.write(" ogs_pfcp_tlv_" + v_lower(ies["ie_type"]) + "_t " + v_lower(ies["ie_value"]) + ";\n")
f.write("} ogs_" + v_lower(k) + "_t;\n")
f.write("\n")
f.write("typedef struct ogs_pfcp_message_s {\n")
f.write(" ogs_pfcp_header_t h;\n")
f.write(" union {\n")
for (k, v) in sorted_msg_list:
if "ies" in msg_list[k]:
f.write(" ogs_" + v_lower(k) + "_t " + v_lower(k) + ";\n");
f.write(" };\n");
f.write("} ogs_pfcp_message_t;\n\n")
f.write("""int ogs_pfcp_parse_msg(ogs_pfcp_message_t *pfcp_message, ogs_pkbuf_t *pkbuf);
ogs_pkbuf_t *ogs_pfcp_build_msg(ogs_pfcp_message_t *pfcp_message);
#ifdef __cplusplus
}
#endif
#endif /* OGS_PFCP_MESSAGE_H */
""")
f.close()
f = open(outdir + 'message.c', 'w')
output_header_to_file(f)
f.write("""#include "ogs-pfcp.h"
""")
for (k, v) in sorted_type_list:
if k in group_list.keys():
continue
f.write("ogs_tlv_desc_t ogs_pfcp_tlv_desc_%s =\n" % v_lower(k))
f.write("{\n")
if "size" in type_list[k]:
if type_list[k]["size"] == 1:
f.write(" OGS_TLV_UINT8,\n")
elif type_list[k]["size"] == 2:
f.write(" OGS_TLV_UINT16,\n")
elif type_list[k]["size"] == 3:
f.write(" OGS_TLV_UINT24,\n")
elif type_list[k]["size"] == 4:
f.write(" OGS_TLV_UINT32,\n")
else:
assert False, "Unknown size = %d for key = %s" % (type_list[k]["size"], k)
else:
f.write(" OGS_TLV_VAR_STR,\n")
f.write(" \"%s\",\n" % k)
f.write(" OGS_PFCP_%s_TYPE,\n" % v_upper(k))
if "size" in type_list[k]:
f.write(" %d,\n" % type_list[k]["size"])
else:
f.write(" 0,\n")
f.write(" 0,\n")
f.write(" sizeof(ogs_pfcp_tlv_%s_t),\n" % v_lower(k))
f.write(" { NULL }\n")
f.write("};\n\n")
for (k, v) in sorted_group_list:
f.write("ogs_tlv_desc_t ogs_pfcp_tlv_desc_%s =\n" % v_lower(k))
f.write("{\n")
f.write(" OGS_TLV_COMPOUND,\n")
f.write(" \"%s\",\n" % k)
f.write(" OGS_PFCP_%s_TYPE,\n" % v_upper(k))
f.write(" 0,\n")
f.write(" 0,\n")
f.write(" sizeof(ogs_pfcp_tlv_%s_t),\n" % v_lower(k))
f.write(" {\n")
for ies in group_list[k]["ies"]:
f.write(" &ogs_pfcp_tlv_desc_%s,\n" % v_lower(ies["ie_type"]))
if type_list[ies["ie_type"]]["max_tlv_more"] != "0" and ies["tlv_more"] != "0":
f.write(" &ogs_tlv_desc_more" + str(int(ies["tlv_more"])+1) + ",\n")
f.write(" NULL,\n")
f.write(" }\n")
f.write("};\n\n")
for (k, v) in sorted_msg_list:
if "ies" in msg_list[k]:
f.write("ogs_tlv_desc_t ogs_pfcp_msg_desc_%s =\n" % v_lower(k))
f.write("{\n")
f.write(" OGS_TLV_MESSAGE,\n")
f.write(" \"%s\",\n" % k)
f.write(" 0, 0, 0, 0, {\n")
for ies in msg_list[k]["ies"]:
f.write(" &ogs_pfcp_tlv_desc_%s,\n" % v_lower(ies["ie_type"]))
if type_list[ies["ie_type"]]["max_tlv_more"] != "0" and ies["tlv_more"] != "0":
f.write(" &ogs_tlv_desc_more" + str(int(ies["tlv_more"])+1) + ",\n")
f.write(" NULL,\n")
f.write("}};\n\n")
f.write("\n")
f.write("""int ogs_pfcp_parse_msg(ogs_pfcp_message_t *pfcp_message, ogs_pkbuf_t *pkbuf)
{
int rv = OGS_ERROR;
ogs_pfcp_header_t *h = NULL;
uint16_t size = 0;
ogs_assert(pfcp_message);
ogs_assert(pkbuf);
ogs_assert(pkbuf->len);
h = (ogs_pfcp_header_t *)pkbuf->data;
ogs_assert(h);
memset(pfcp_message, 0, sizeof(ogs_pfcp_message_t));
if (h->seid_presence)
size = OGS_PFCP_HEADER_LEN;
else
size = OGS_PFCP_HEADER_LEN-OGS_PFCP_SEID_LEN;
ogs_assert(ogs_pkbuf_pull(pkbuf, size));
memcpy(&pfcp_message->h, pkbuf->data - size, size);
if (h->seid_presence) {
pfcp_message->h.seid = be64toh(pfcp_message->h.seid);
} else {
pfcp_message->h.sqn = pfcp_message->h.sqn_only;
}
if (pkbuf->len == 0)
return OGS_OK;
switch(pfcp_message->h.type)
{
""")
for (k, v) in sorted_msg_list:
if "ies" in msg_list[k]:
f.write(" case OGS_%s_TYPE:\n" % v_upper(k))
f.write(" rv = ogs_tlv_parse_msg(&pfcp_message->%s,\n" % v_lower(k))
f.write(" &ogs_pfcp_msg_desc_%s, pkbuf, OGS_TLV_MODE_T2_L2);\n" % v_lower(k))
f.write(" break;\n")
f.write(""" default:
ogs_warn("Not implmeneted(type:%d)", pfcp_message->h.type);
break;
}
return rv;
}
""")
f.write("""ogs_pkbuf_t *ogs_pfcp_build_msg(ogs_pfcp_message_t *pfcp_message)
{
ogs_pkbuf_t *pkbuf = NULL;
ogs_assert(pfcp_message);
switch(pfcp_message->h.type)
{
""")
for (k, v) in sorted_msg_list:
if "ies" in msg_list[k]:
f.write(" case OGS_%s_TYPE:\n" % v_upper(k))
f.write(" pkbuf = ogs_tlv_build_msg(&ogs_pfcp_msg_desc_%s,\n" % v_lower(k))
f.write(" &pfcp_message->%s, OGS_TLV_MODE_T2_L2);\n" % v_lower(k))
f.write(" break;\n")
f.write(""" default:
ogs_warn("Not implmeneted(type:%d)", pfcp_message->h.type);
break;
}
return pkbuf;
}
""")
f.write("\n")
f.close()
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