forked from acouzens/open5gs
706 lines
26 KiB
Python
706 lines
26 KiB
Python
# Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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# This file is part of Open5GS.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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from docx import Document
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import re, os, sys, string
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import datetime
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import getopt
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import getpass
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version = "0.1.0"
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msg_list = {}
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type_list = {}
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group_list = {}
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verbosity = 0
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filename = ""
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outdir = './'
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cachedir = './cache/'
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FAIL = '\033[91m'
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INFO = '\033[93m'
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ENDC = '\033[0m'
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def d_print(string):
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if verbosity > 0:
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sys.stdout.write(string)
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def d_info(string):
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sys.stdout.write(INFO + string + ENDC + "\n")
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def d_error(string):
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sys.stderr.write(FAIL + string + ENDC + "\n")
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sys.exit(0)
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def write_file(f, string):
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f.write(string)
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d_print(string)
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def output_header_to_file(f):
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now = datetime.datetime.now()
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f.write("""/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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""")
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f.write("/*******************************************************************************\n")
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f.write(" * This file had been created by gtp-tlv.py script v%s\n" % (version))
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f.write(" * Please do not modify this file but regenerate it via script.\n")
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f.write(" * Created on: %s by %s\n * from %s\n" % (str(now), getpass.getuser(), filename))
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f.write(" ******************************************************************************/\n\n")
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def usage():
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print("Python generating TLV build/parser for GTPv2-C v%s" % (version))
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print("Usage: python gtp-tlv.py [options]")
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print("Available options:")
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print("-d Enable script debug")
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print("-f [file] Input file to parse")
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print("-o [dir] Output files to given directory")
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print("-c [dir] Cache files to given directory")
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print("-h Print this help and return")
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def v_upper(v):
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return re.sub('3GPP', '', re.sub('\'', '_', re.sub('/', '_', re.sub('-', '_', re.sub(' ', '_', v)))).upper())
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def v_lower(v):
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return re.sub('3gpp', '', re.sub('\'', '_', re.sub('/', '_', re.sub('-', '_', re.sub(' ', '_', v)))).lower())
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def get_cells(cells):
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instance = cells[4].text
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if instance.isdigit() is not True:
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return None
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ie_type = re.sub('\s*$', '', re.sub('\s*\n*\s*\([A-z]*\s*NOTE.*\)*', '', cells[3].text))
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if ie_type.find('LDN') != -1:
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ie_type = 'LDN'
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elif ie_type.find('APCO') != -1:
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ie_type = 'APCO'
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elif ie_type.find('Charging Id') != -1:
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ie_type = 'Charging ID'
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elif ie_type.find('H(e)NB Information Reporting') != -1:
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ie_type = 'eNB Information Reporting'
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elif ie_type.find('IPv4 Configuration Parameters (IP4CP)') != -1:
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ie_type = 'IP4CP'
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elif ie_type.find('Charging characteristics') != -1:
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ie_type = 'Charging Characteristics'
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elif ie_type.find('Change To Report Flags') != -1:
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ie_type = 'Change to Report Flags'
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elif ie_type.find('APN RATE Control Status') != -1:
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ie_type = 'APN Rate Control Status'
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if ie_type not in type_list.keys():
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assert False, "Unknown IE type : [" \
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+ cells[3].text + "]" + "(" + ie_type + ")"
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presence = cells[1].text
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presence = re.sub('\n', '', presence);
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ie_value = re.sub('\s*\n*\s*\([^\)]*\)*', '', cells[0].text)
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comment = cells[2].text.encode('ascii', 'ignore').decode('utf-8')
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comment = re.sub('\n|\"|\'|\\\\', '', comment);
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if int(instance) > int(type_list[ie_type]["max_instance"]):
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type_list[ie_type]["max_instance"] = instance
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write_file(f, "type_list[\"" + ie_type + "\"][\"max_instance\"] = \"" + instance + "\"\n")
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return { "ie_type" : ie_type, "ie_value" : ie_value, "presence" : presence, "instance" : instance, "comment" : comment }
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def write_cells_to_file(name, cells):
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write_file(f, name + ".append({ \"ie_type\" : \"" + cells["ie_type"] + \
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"\", \"ie_value\" : \"" + cells["ie_value"] + \
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"\", \"presence\" : \"" + cells["presence"] + \
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"\", \"instance\" : \"" + cells["instance"] + \
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"\", \"comment\" : \"" + cells["comment"] + "\"})\n")
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try:
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opts, args = getopt.getopt(sys.argv[1:], "df:ho:c:", ["debug", "file", "help", "output", "cache"])
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except getopt.GetoptError as err:
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# print help information and exit:
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usage()
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sys.exit(2)
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for o, a in opts:
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if o in ("-d", "--debug"):
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verbosity = 1
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if o in ("-f", "--file"):
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filename = a
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if o in ("-o", "--output"):
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outdir = a
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if outdir.rfind('/') != len(outdir):
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outdir += '/'
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if o in ("-c", "--cache"):
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cache = a
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if cachedir.rfind('/') != len(cachedir):
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cachedir += '/'
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if o in ("-h", "--help"):
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usage()
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sys.exit(2)
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if os.path.isfile(filename) and os.access(filename, os.R_OK):
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file = open(filename, 'r')
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else:
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d_error("Cannot find file : " + filename)
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d_info("[Message List]")
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cachefile = cachedir + 'tlv-msg-list.py'
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if os.path.isfile(cachefile) and os.access(cachefile, os.R_OK):
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exec(open(cachefile).read())
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print("Read from " + cachefile)
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else:
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document = Document(filename)
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f = open(cachefile, 'w')
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msg_table = ""
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for i, table in enumerate(document.tables):
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cell = table.rows[0].cells[0]
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if cell.text.find('Message Type value') != -1:
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msg_table = table
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d_print("Table Index = %d\n" % i)
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for row in msg_table.rows[2:-4]:
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key = row.cells[1].text
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type = row.cells[0].text
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if type.isdigit() is False:
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continue
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if int(type) in range(128, 160):
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continue
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if int(type) in range(231, 240):
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continue
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if key.find('Reserved') != -1:
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continue
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key = re.sub('\s*\n*\s*\([^\)]*\)*', '', key)
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msg_list[key] = { "type": type }
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write_file(f, "msg_list[\"" + key + "\"] = { \"type\" : \"" + type + "\" }\n")
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f.close()
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d_info("[IE Type List]")
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cachefile = cachedir + 'tlv-type-list.py'
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if os.path.isfile(cachefile) and os.access(cachefile, os.R_OK):
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exec(open(cachefile).read())
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print("Read from " + cachefile)
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else:
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document = Document(filename)
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f = open(cachefile, 'w')
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ie_table = ""
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for i, table in enumerate(document.tables):
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cell = table.rows[0].cells[0]
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if cell.text.find('IE Type value') != -1:
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ie_table = table
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d_print("Table Index = %d\n" % i)
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for row in ie_table.rows[1:-5]:
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key = row.cells[1].text
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if key.find('Reserved') != -1:
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continue
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if key.find('MM Context') != -1:
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continue
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elif key.find('Recovery') != -1:
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key = 'Recovery'
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elif key.find('Trusted WLAN Mode Indication') != -1:
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key = 'TWMI'
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elif key.find('LDN') != -1:
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key = 'LDN'
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elif key.find('APCO') != -1:
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key = 'APCO'
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elif key.find('Remote UE IP information') != -1:
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key = 'Remote UE IP Information'
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elif key.find('Procedure Transaction ID') != -1:
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key = 'PTI'
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else:
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key = re.sub('.*\(', '', row.cells[1].text)
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key = re.sub('\)', '', key)
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key = re.sub('\s*$', '', key)
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type = row.cells[0].text
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type_list[key] = { "type": type , "max_instance" : "0" }
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write_file(f, "type_list[\"" + key + "\"] = { \"type\" : \"" + type)
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write_file(f, "\", \"max_instance\" : \"0\" }\n")
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f.close()
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type_list['MM Context'] = { "type": "107", "max_instance" : "0" }
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d_info("[Group IE List]")
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cachefile = cachedir + 'tlv-group-list.py'
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if os.path.isfile(cachefile) and os.access(cachefile, os.R_OK):
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exec(open(cachefile).read())
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print("Read from " + cachefile)
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else:
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document = Document(filename)
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f = open(cachefile, 'w')
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for i, table in enumerate(document.tables):
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if table.rows[0].cells[0].text.find('Octet') != -1 and \
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table.rows[0].cells[2].text.find('IE Type') != -1:
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d_print("Table Index = %d\n" % i)
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row = table.rows[0];
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if len(re.findall('\d+', row.cells[2].text)) == 0:
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continue;
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ie_type = re.findall('\d+', row.cells[2].text)[0]
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ie_name = re.sub('\s*IE Type.*', '', row.cells[2].text)
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if ie_name not in group_list.keys():
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ies = []
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write_file(f, "ies = []\n")
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for row in table.rows[4:]:
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cells = get_cells(row.cells)
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if cells is None:
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continue
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ies_is_added = True
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for ie in ies:
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if (cells["ie_type"], cells["instance"]) == (ie["ie_type"], ie["instance"]):
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ies_is_added = False
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if ies_is_added is True:
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ies.append(cells)
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write_cells_to_file("ies", cells)
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ie_idx = str(int(ie_type)+100)
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group_list[ie_name] = { "index" : ie_idx, "type" : ie_type, "ies" : ies }
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write_file(f, "group_list[\"" + ie_name + "\"] = { \"index\" : \"" + ie_idx + "\", \"type\" : \"" + ie_type + "\", \"ies\" : ies }\n")
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else:
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group_list_is_added = False
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added_ies = group_list[ie_name]["ies"]
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write_file(f, "added_ies = group_list[\"" + ie_name + "\"][\"ies\"]\n")
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for row in table.rows[4:]:
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cells = get_cells(row.cells)
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if cells is None:
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continue
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ies_is_added = True
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for ie in group_list[ie_name]["ies"]:
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if (cells["ie_type"], cells["instance"]) == (ie["ie_type"], ie["instance"]):
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ies_is_added = False
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for ie in ies:
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if (cells["ie_type"], cells["instance"]) == (ie["ie_type"], ie["instance"]):
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ies_is_added = False
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if ies_is_added is True:
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added_ies.append(cells)
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write_cells_to_file("added_ies", cells)
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group_list_is_added = True
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if group_list_is_added is True:
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ie_idx = str(int(ie_type)+100)
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group_list[ie_name] = { "index" : ie_idx, "type" : ie_type, "ies" : added_ies }
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write_file(f, "group_list[\"" + ie_name + "\"] = { \"index\" : \"" + ie_idx + "\", \"type\" : \"" + ie_type + "\", \"ies\" : added_ies }\n")
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f.close()
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msg_list["Echo Request"]["table"] = 8
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msg_list["Echo Response"]["table"] = 9
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msg_list["Create Session Request"]["table"] = 10
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msg_list["Create Session Response"]["table"] = 15
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msg_list["Create Bearer Request"]["table"] = 20
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msg_list["Create Bearer Response"]["table"] = 24
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msg_list["Bearer Resource Command"]["table"] = 27
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msg_list["Bearer Resource Failure Indication"]["table"] = 29
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msg_list["Modify Bearer Request"]["table"] = 31
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msg_list["Modify Bearer Response"]["table"] = 35
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msg_list["Delete Session Request"]["table"] = 40
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msg_list["Delete Bearer Request"]["table"] = 42
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msg_list["Delete Session Response"]["table"] = 46
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msg_list["Delete Bearer Response"]["table"] = 49
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msg_list["Downlink Data Notification"]["table"] = 52
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msg_list["Downlink Data Notification Acknowledge"]["table"] = 55
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msg_list["Downlink Data Notification Failure Indication"]["table"] = 56
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msg_list["Delete Indirect Data Forwarding Tunnel Request"]["table"] = 57
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msg_list["Delete Indirect Data Forwarding Tunnel Response"]["table"] = 58
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msg_list["Modify Bearer Command"]["table"] = 59
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msg_list["Modify Bearer Failure Indication"]["table"] = 62
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msg_list["Update Bearer Request"]["table"] = 64
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msg_list["Update Bearer Response"]["table"] = 68
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msg_list["Delete Bearer Command"]["table"] = 71
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msg_list["Delete Bearer Failure Indication"]["table"] = 74
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msg_list["Create Indirect Data Forwarding Tunnel Request"]["table"] = 77
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msg_list["Create Indirect Data Forwarding Tunnel Response"]["table"] = 79
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msg_list["Release Access Bearers Request"]["table"] = 81
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msg_list["Release Access Bearers Response"]["table"] = 82
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msg_list["Modify Access Bearers Request"]["table"] = 86
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msg_list["Modify Access Bearers Response"]["table"] = 89
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for key in msg_list.keys():
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if "table" in msg_list[key].keys():
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d_info("[" + key + "]")
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cachefile = cachedir + "tlv-msg-" + msg_list[key]["type"] + ".py"
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if os.path.isfile(cachefile) and os.access(cachefile, os.R_OK):
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exec(open(cachefile).read())
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print("Read from " + cachefile)
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else:
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document = Document(filename)
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f = open(cachefile, 'w')
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ies = []
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write_file(f, "ies = []\n")
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table = document.tables[msg_list[key]["table"]]
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for row in table.rows[1:]:
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cells = get_cells(row.cells)
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if cells is None:
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continue
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ies_is_added = True
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for ie in ies:
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if (cells["ie_type"], cells["instance"]) == (ie["ie_type"], ie["instance"]):
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ies_is_added = False
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if ies_is_added is True:
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ies.append(cells)
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write_cells_to_file("ies", cells)
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msg_list[key]["ies"] = ies
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write_file(f, "msg_list[key][\"ies\"] = ies\n")
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f.close()
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type_list["Recovery"]["size"] = 1 # Type : 3
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type_list["EBI"]["size"] = 1 # Type : 73
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type_list["RAT Type"]["size"] = 1 # Type : 82
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type_list["Charging ID"]["size"] = 4 # Type : 94
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type_list["PDN Type"]["size"] = 1 # Type : 99
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type_list["PTI"]["size"] = 1 # Type : 100
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type_list["Port Number"]["size"] = 2 # Type : 126
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type_list["APN Restriction"]["size"] = 1 # Type : 127
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type_list["Selection Mode"]["size"] = 1 # Type : 128
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type_list["Node Type"]["size"] = 1 # Type : 135
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type_list["Node Features"]["size"] = 1 # Type : 152
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f = open(outdir + 'message.h', 'w')
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output_header_to_file(f)
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f.write("""#if !defined(OGS_GTP_INSIDE) && !defined(OGS_GTP_COMPILATION)
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#error "This header cannot be included directly."
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#endif
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#ifndef OGS_GTP_MESSAGE_H
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#define OGS_GTP_MESSAGE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* 5.1 General format */
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#define OGS_GTPV1U_HEADER_LEN 8
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#define OGS_GTPV2C_HEADER_LEN 12
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#define OGS_GTP_TEID_LEN 4
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typedef struct ogs_gtp_header_s {
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union {
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struct {
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#define OGS_GTP_VERSION_0 0
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#define OGS_GTP_VERSION_1 1
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ED4(uint8_t version:3;,
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uint8_t piggybacked:1;,
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uint8_t teid_presence:1;,
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uint8_t spare1:3;)
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};
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/* GTU-U flags */
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#define OGS_GTPU_FLAGS_V 0x20
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#define OGS_GTPU_FLAGS_PT 0x10
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#define OGS_GTPU_FLAGS_E 0x04
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#define OGS_GTPU_FLAGS_S 0x02
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#define OGS_GTPU_FLAGS_PN 0x01
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uint8_t flags;
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};
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/* GTP-U message type, defined in 3GPP TS 29.281 Release 11 */
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#define OGS_GTPU_MSGTYPE_ECHO_REQ 1
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#define OGS_GTPU_MSGTYPE_ECHO_RSP 2
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#define OGS_GTPU_MSGTYPE_ERR_IND 26
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#define OGS_GTPU_MSGTYPE_SUPP_EXTHDR_NOTI 31
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#define OGS_GTPU_MSGTYPE_END_MARKER 254
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#define OGS_GTPU_MSGTYPE_GPDU 255
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uint8_t type;
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uint16_t length;
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union {
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struct {
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uint32_t teid;
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/* sqn : 31bit ~ 8bit, spare : 7bit ~ 0bit */
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|
#define OGS_GTP_XID_TO_SQN(__xid) htobe32(((__xid) << 8))
|
|
#define OGS_GTP_SQN_TO_XID(__sqn) (be32toh(__sqn) >> 8)
|
|
uint32_t sqn;
|
|
};
|
|
/* sqn : 31bit ~ 8bit, spare : 7bit ~ 0bit */
|
|
uint32_t sqn_only;
|
|
};
|
|
} __attribute__ ((packed)) ogs_gtp_header_t;
|
|
|
|
/* GTPv2-C 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_GTP_" + 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_GTP_" + v_upper(k) + "_TYPE " + v + "\n")
|
|
f.write("\n")
|
|
|
|
f.write("/* Infomration Element TLV Descriptor */\n")
|
|
for (k, v) in sorted_type_list:
|
|
if k in group_list.keys():
|
|
continue
|
|
for instance in range(0, int(type_list[k]["max_instance"])+1):
|
|
f.write("extern ogs_tlv_desc_t ogs_gtp_tlv_desc_" + v_lower(k))
|
|
f.write("_" + str(instance) + ";\n")
|
|
f.write("\n")
|
|
|
|
for k, v in group_list.items():
|
|
if v_lower(k) == "pc5_qos_parameters":
|
|
v["index"] = "1"
|
|
if v_lower(k) == "remote_ue_context":
|
|
v["index"] = "2"
|
|
|
|
tmp = [(k, v["index"]) for k, v in group_list.items()]
|
|
sorted_group_list = sorted(tmp, key=lambda tup: int(tup[1]))
|
|
|
|
f.write("/* Group Infomration Element TLV Descriptor */\n")
|
|
for (k, v) in sorted_group_list:
|
|
for instance in range(0, int(type_list[k]["max_instance"])+1):
|
|
f.write("extern ogs_tlv_desc_t ogs_gtp_tlv_desc_" + v_lower(k))
|
|
f.write("_" + str(instance) + ";\n")
|
|
f.write("\n")
|
|
|
|
f.write("/* Message Descriptor */\n")
|
|
for (k, v) in sorted_msg_list:
|
|
f.write("extern ogs_tlv_desc_t ogs_gtp_tlv_desc_" + v_lower(k) + ";\n")
|
|
f.write("\n")
|
|
|
|
f.write("/* Structure for Infomration 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_gtp_tlv_" + v_lower(k) + "_t;\n")
|
|
elif type_list[k]["size"] == 2:
|
|
f.write("typedef ogs_tlv_uint16_t ogs_gtp_tlv_" + v_lower(k) + "_t;\n")
|
|
elif type_list[k]["size"] == 3:
|
|
f.write("typedef ogs_tlv_uint24_t ogs_gtp_tlv_" + v_lower(k) + "_t;\n")
|
|
elif type_list[k]["size"] == 4:
|
|
f.write("typedef ogs_tlv_uint32_t ogs_gtp_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_gtp_tlv_" + v_lower(k) + "_t;\n")
|
|
f.write("\n")
|
|
|
|
f.write("/* Structure for Group Infomration Element */\n")
|
|
for (k, v) in sorted_group_list:
|
|
f.write("typedef struct ogs_gtp_tlv_" + v_lower(k) + "_s {\n")
|
|
f.write(" ogs_tlv_presence_t presence;\n")
|
|
for ies in group_list[k]["ies"]:
|
|
f.write(" ogs_gtp_tlv_" + v_lower(ies["ie_type"]) + "_t " + \
|
|
v_lower(ies["ie_value"]))
|
|
if ies["ie_type"] == "F-TEID":
|
|
if ies["ie_value"] == "S2b-U ePDG F-TEID":
|
|
f.write("_" + ies["instance"] + ";")
|
|
elif ies["ie_value"] == "S2a-U TWAN F-TEID":
|
|
f.write("_" + ies["instance"] + ";")
|
|
else:
|
|
f.write(";")
|
|
f.write(" /* Instance : " + ies["instance"] + " */\n")
|
|
else:
|
|
f.write(";\n")
|
|
f.write("} ogs_gtp_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_gtp_" + v_lower(k) + "_s {\n")
|
|
for ies in msg_list[k]["ies"]:
|
|
if (k == 'Create Indirect Data Forwarding Tunnel Request' or k == 'Create Indirect Data Forwarding Tunnel Response') and ies["ie_value"] == 'Bearer Contexts':
|
|
f.write(" ogs_gtp_tlv_" + v_lower(ies["ie_type"]) + "_t " + \
|
|
v_lower(ies["ie_value"]) + "[8];\n")
|
|
else:
|
|
f.write(" ogs_gtp_tlv_" + v_lower(ies["ie_type"]) + "_t " + \
|
|
v_lower(ies["ie_value"]) + ";\n")
|
|
f.write("} ogs_gtp_" + v_lower(k) + "_t;\n")
|
|
f.write("\n")
|
|
|
|
f.write("typedef struct ogs_gtp_message_s {\n")
|
|
f.write(" ogs_gtp_header_t h;\n")
|
|
f.write(" union {\n")
|
|
for (k, v) in sorted_msg_list:
|
|
if "ies" in msg_list[k]:
|
|
f.write(" ogs_gtp_" + v_lower(k) + "_t " + v_lower(k) + ";\n");
|
|
f.write(" };\n");
|
|
f.write("} ogs_gtp_message_t;\n\n")
|
|
|
|
f.write("""int ogs_gtp_parse_msg(ogs_gtp_message_t *gtp_message, ogs_pkbuf_t *pkbuf);
|
|
ogs_pkbuf_t *ogs_gtp_build_msg(ogs_gtp_message_t *gtp_message);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* OGS_GTP_MESSAGE_H */
|
|
""")
|
|
f.close()
|
|
|
|
f = open(outdir + 'message.c', 'w')
|
|
output_header_to_file(f)
|
|
f.write("""#include "ogs-gtp.h"
|
|
|
|
""")
|
|
|
|
for (k, v) in sorted_type_list:
|
|
if k in group_list.keys():
|
|
continue
|
|
for instance in range(0, int(type_list[k]["max_instance"])+1):
|
|
f.write("ogs_tlv_desc_t ogs_gtp_tlv_desc_%s_%d =\n" % (v_lower(k), instance))
|
|
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_GTP_%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(" %d,\n" % instance)
|
|
f.write(" sizeof(ogs_gtp_tlv_%s_t),\n" % v_lower(k))
|
|
f.write(" { NULL }\n")
|
|
f.write("};\n\n")
|
|
|
|
for (k, v) in sorted_group_list:
|
|
for instance in range(0, int(type_list[k]["max_instance"])+1):
|
|
f.write("ogs_tlv_desc_t ogs_gtp_tlv_desc_%s_%d =\n" % (v_lower(k), instance))
|
|
f.write("{\n")
|
|
f.write(" OGS_TLV_COMPOUND,\n")
|
|
f.write(" \"%s\",\n" % k)
|
|
f.write(" OGS_GTP_%s_TYPE,\n" % v_upper(k))
|
|
f.write(" 0,\n")
|
|
f.write(" %d,\n" % instance)
|
|
f.write(" sizeof(ogs_gtp_tlv_%s_t),\n" % v_lower(k))
|
|
f.write(" {\n")
|
|
for ies in group_list[k]["ies"]:
|
|
f.write(" &ogs_gtp_tlv_desc_%s_%s,\n" % (v_lower(ies["ie_type"]), v_lower(ies["instance"])))
|
|
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_gtp_tlv_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_gtp_tlv_desc_%s_%s,\n" % (v_lower(ies["ie_type"]), v_lower(ies["instance"])))
|
|
if (k == 'Create Indirect Data Forwarding Tunnel Request' or k == 'Create Indirect Data Forwarding Tunnel Response') and ies["ie_value"] == 'Bearer Contexts':
|
|
f.write(" &ogs_tlv_desc_more8,\n")
|
|
f.write(" NULL,\n")
|
|
f.write("}};\n\n")
|
|
f.write("\n")
|
|
|
|
f.write("""int ogs_gtp_parse_msg(ogs_gtp_message_t *gtp_message, ogs_pkbuf_t *pkbuf)
|
|
{
|
|
int rv = OGS_ERROR;
|
|
ogs_gtp_header_t *h = NULL;
|
|
uint16_t size = 0;
|
|
|
|
ogs_assert(gtp_message);
|
|
ogs_assert(pkbuf);
|
|
ogs_assert(pkbuf->len);
|
|
|
|
h = (ogs_gtp_header_t *)pkbuf->data;
|
|
ogs_assert(h);
|
|
|
|
memset(gtp_message, 0, sizeof(ogs_gtp_message_t));
|
|
|
|
if (h->teid_presence)
|
|
size = OGS_GTPV2C_HEADER_LEN;
|
|
else
|
|
size = OGS_GTPV2C_HEADER_LEN-OGS_GTP_TEID_LEN;
|
|
|
|
ogs_assert(ogs_pkbuf_pull(pkbuf, size));
|
|
memcpy(>p_message->h, pkbuf->data - size, size);
|
|
|
|
if (h->teid_presence)
|
|
gtp_message->h.teid = be32toh(gtp_message->h.teid);
|
|
|
|
if (pkbuf->len == 0) {
|
|
ogs_assert(ogs_pkbuf_push(pkbuf, size));
|
|
return OGS_OK;
|
|
}
|
|
|
|
switch(gtp_message->h.type) {
|
|
""")
|
|
for (k, v) in sorted_msg_list:
|
|
if "ies" in msg_list[k]:
|
|
f.write(" case OGS_GTP_%s_TYPE:\n" % v_upper(k))
|
|
f.write(" rv = ogs_tlv_parse_msg(>p_message->%s,\n" % v_lower(k))
|
|
f.write(" &ogs_gtp_tlv_desc_%s, pkbuf, OGS_TLV_MODE_T1_L2_I1);\n" % v_lower(k))
|
|
f.write(" break;\n")
|
|
f.write(""" default:
|
|
ogs_warn("Not implmeneted(type:%d)", gtp_message->h.type);
|
|
break;
|
|
}
|
|
|
|
ogs_assert(ogs_pkbuf_push(pkbuf, size));
|
|
|
|
return rv;
|
|
}
|
|
|
|
""")
|
|
|
|
f.write("""ogs_pkbuf_t *ogs_gtp_build_msg(ogs_gtp_message_t *gtp_message)
|
|
{
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
|
|
ogs_assert(gtp_message);
|
|
switch(gtp_message->h.type) {
|
|
""")
|
|
for (k, v) in sorted_msg_list:
|
|
if "ies" in msg_list[k]:
|
|
f.write(" case OGS_GTP_%s_TYPE:\n" % v_upper(k))
|
|
f.write(" pkbuf = ogs_tlv_build_msg(&ogs_gtp_tlv_desc_%s,\n" % v_lower(k))
|
|
f.write(" >p_message->%s, OGS_TLV_MODE_T1_L2_I1);\n" % v_lower(k))
|
|
f.write(" break;\n")
|
|
f.write(""" default:
|
|
ogs_warn("Not implmeneted(type:%d)", gtp_message->h.type);
|
|
break;
|
|
}
|
|
|
|
return pkbuf;
|
|
}
|
|
""")
|
|
|
|
f.write("\n")
|
|
|
|
f.close()
|