asn1/utils/asn1tostruct.py

#!/usr/bin/python

import re, os, sys, string
import datetime
import getopt
import getpass

version = "0.5"

lines = ""
iesDefs = {}
ieofielist = {}
outdir = './'

filenames = []
verbosity = 0
prefix = ""

FAIL = '\033[91m'
WARN = '\033[93m'
ENDC = '\033[0m'

fileprefix = ""

def printFail(string):
    sys.stderr.write(FAIL + string + ENDC + "\n")

def printWarning(string):
    print WARN + string + ENDC

def printDebug(string):
    if verbosity > 0:
        print string

def outputHeaderToFile(f, filename):
    now = datetime.datetime.now()
    f.write("""/*******************************************************************************

  Eurecom OpenAirInterface
  Copyright(c) 1999 - 2012 Eurecom

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope 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, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information
  Openair Admin: openair_admin@eurecom.fr
  Openair Tech : openair_tech@eurecom.fr
  Forums       : http://forums.eurecom.fr/openairinterface
  Address      : EURECOM, Campus SophiaTech, 450 Route des Chappes
                 06410 Biot FRANCE

*******************************************************************************/

""")
    f.write("/*******************************************************************************\n")
    f.write(" * This file had been created by asn1tostruct.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(), filenames))
    f.write(" ******************************************************************************/\n")

def lowerFirstCamelWord(word):
    """ puts the first word in a CamelCase Word in lowercase.

    I.e. CustomerID becomes customerID, XMLInfoTest becomes xmlInfoTest
    """
    newstr = ''
    swapped = word.swapcase()
    idx = 0

    # if it's all-caps, return an all-lowered version
    lowered = word.lower()

    if swapped == lowered:
        return lowered

    for c in swapped:
        if c in string.lowercase:
            newstr += c
            idx += 1
        else:
            break
    if idx < 2:
        newstr += word[idx:]
    else:
        newstr = newstr[:-1]+ word[idx-1:]

    return newstr

def usage():
    print "Python parser for asn1 v%s" % (version)
    print "Usage: python asn1tostruct.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 "-h        Print this help and return"

try:
    opts, args = getopt.getopt(sys.argv[1:], "df:ho:", ["debug", "file", "help", "outdir"])
except getopt.GetoptError as err:
    # print help information and exit:
    usage()
    sys.exit(2)

for o, a in opts:
    if o in ("-f", "--file"):
        filenames.append(a)
    if o in ("-d", "--debug"):
        verbosity = 1
    if o in ("-o", "--outdir"):
        outdir = a
        if outdir.rfind('/') != len(outdir):
            outdir += '/'
    if o in ("-h", "--help"):
        usage()
        sys.exit(2)

for filename in filenames:
    file = open(filename, 'r')
    for line in file:
        # Removing any comment
        if line.find('--') >= 0:
            line = line[:line.find('--')]
        # Removing any carriage return
        lines += re.sub('\r', '', line)

    for m in re.findall(r'([a-zA-Z0-9-]+)\s*::=\s+SEQUENCE\s+\(\s*SIZE\s*\(\s*\d+\s*\.\.\s*[0-9a-zA-Z-]+\s*\)\s*\)\s*OF\s+[a-zA-Z-]+\s*\{\s*\{\s*([0-9a-zA-Z-]+)\s*\}\s*\}', lines, re.MULTILINE):
        ieofielist[m[0]] = m[1]
    for m in re.findall(r'([a-zA-Z0-9-]+)\s*::=\s+E-RAB-IE-ContainerList\s*\{\s*\{\s*([a-zA-Z0-9-]+)\s*\}\s*\}', lines, re.MULTILINE):
        ieofielist[m[0]] = m[1]

    for i in re.findall(r'([a-zA-Z0-9-]+)\s+([A-Z0-9-]+)\s*::=\s*\{\s+([\,\|\{\}\t\n\.{3}\ \-a-zA-Z0-9]+)\s+}\n', lines, re.MULTILINE):
        ies = []
        maxLength = 0
        # TODO: handle extensions
        if i[1].find('EXTENSION') >= 0:
            continue
        if fileprefix == "":
            fileprefix = i[1][:i[1].find('-')].lower()
        for j in re.findall(r'\s*\{\s*([a-zA-Z0-9-\ \t]+)\s*\}\s*[\|,]*', i[2], re.MULTILINE):
            for k in re.findall(r'ID\s*([a-zA-Z0-9\-]+)\s*CRITICALITY\s*([a-zA-Z0-9\-]+)\s+[A-Z]+\s+([a-zA-Z0-9\-]+)\s*PRESENCE\s*([a-zA-Z0-9\-]+)', j, re.MULTILINE):
                printDebug("Got new ie for message " + i[0] + ": " + str(k))
                if len(k[2]) > maxLength:
                    maxLength = len(k[2])
                ies.append(k)

        if len(ies) > 0:
            iesDefs[i[0]] = { "length": maxLength, "ies": ies}
        else:
            printWarning("Didn't find any information element for message: " + i[0])

if len(iesDefs) == 0:
    printFail("No Information Element parsed, exiting")
    sys.exit(0)

f = open(outdir + fileprefix + '_ies_defs.h', 'w')
outputHeaderToFile(f, filename)
f.write("#include \"%s_common.h\"\n\n" % (fileprefix))
f.write("#ifndef %s_IES_DEFS_H_\n#define %s_IES_DEFS_H_\n\n" % (fileprefix.upper(), fileprefix.upper()))

for key in iesDefs:

    if key not in ieofielist.values():
        continue

    for (i, j) in ieofielist.items():
        if j == key:
            break

    f.write("typedef struct %sIEs_s {\n" % (re.sub('-', '_', i)))
    f.write("    A_SEQUENCE_OF(struct %s_s) %s;\n" % (re.sub('IEs', '', re.sub('-', '_', ieofielist[i])), lowerFirstCamelWord(re.sub('IEs', '', re.sub('-', '_', ieofielist[i])))))
    f.write("} %sIEs_t;\n\n" % (re.sub('-', '_', i)))

for key in iesDefs:
    keyupperunderscore = re.sub('-', '_', key.upper())
    keylowerunderscore = re.sub('-', '_', key.lower())
    shift = 0

    if len(iesDefs[key]["ies"]) == 0:
        continue

    # Presence mask
    for ie in iesDefs[key]["ies"]:
        ieupperunderscore = re.sub('-', '_', ie[2].upper())
        if ie[3] == "optional" or ie[3] == "conditional":
            f.write("#define {0:<{pad}} {1}\n".format("%s_%s_PRESENT" % (keyupperunderscore, ieupperunderscore), "(1 << %d)" % shift,
            pad=iesDefs[key]["length"] + len(keyupperunderscore) + 9))
            shift += 1
    if (shift > 0):
        f.write("\n")

    f.write("typedef struct %s_s {\n" % (re.sub('-', '_', key)))
    if (shift > 0):
        f.write("    {0:<{pad}} {1};\n".format("uint16_t", "presenceMask", pad=iesDefs[key]["length"] + 2))
    for ie in iesDefs[key]["ies"]:
        ieunderscore = re.sub('-', '_', ie[2])
        iename = re.sub('id-', '', ie[0])
        ienameunderscore = lowerFirstCamelWord(re.sub('-', '_', iename))
        if ie[2] in ieofielist:
            f.write("    %sIEs_t %s;" % (re.sub('-', '_', ie[2]), ienameunderscore))
        else:
            f.write("    {0:<{pad}} {1};".format("%s_t" % ieunderscore, ienameunderscore, pad=iesDefs[key]["length"] + 2))
        if ie[3] == "optional":
            f.write(" ///< Optional field")
        elif ie[3] == "conditional":
            f.write(" ///< Conditional field")
        f.write("\n")

    f.write("} %s_t;\n\n" % (re.sub('-', '_', key)))

f.write("typedef struct %s_message_s {\n" % (fileprefix))
f.write("    uint8_t procedureCode;\n")
f.write("    uint8_t criticality;\n")
f.write("    uint8_t direction;\n")
f.write("    union {\n")

messageList = iesDefs.keys()
messageList.sort()
for message in messageList:
    if message in ieofielist.values():
        continue
    if len(iesDefs[message]["ies"]) == 0:
        continue
    f.write("        %s_t %s;\n" % (re.sub('-', '_', message), lowerFirstCamelWord(re.sub('-', '_', message))))
f.write("    } msg;\n")
f.write("} %s_message;\n\n" % (fileprefix))

for key in iesDefs:
    if key in ieofielist.values():
        continue
    structName = re.sub('ies', '', key)
    asn1cStruct = re.sub('-', '_', re.sub('IEs', '', re.sub('-IEs', '', key)))
    asn1cStruct = re.sub('Item', 'List', asn1cStruct)
    keylowerunderscore = re.sub('-', '_', key.lower())
    firstlower = re.sub('Item', 'List', re.sub('enb', 'eNB', lowerFirstCamelWord(asn1cStruct)))
    f.write("/** \\brief Decode function for %s ies.\n" % (key))
    if len(iesDefs[key]["ies"]) != 0:
        f.write(" * \\param %s Pointer to ASN1 structure in which data will be stored\n" % (lowerFirstCamelWord(re.sub('-', '_', key))))
    f.write(" *  \\param any_p Pointer to the ANY value to decode.\n")
    f.write(" **/\n")
    f.write("int %s_decode_%s(\n" % (fileprefix, keylowerunderscore))

    if len(iesDefs[key]["ies"]) != 0:
        f.write("    %s_t *%s,\n" % (re.sub('-', '_', key), lowerFirstCamelWord(re.sub('-', '_', key))))
    f.write("    ANY_t *any_p);\n\n")

    if len(iesDefs[key]["ies"]) == 0:
        continue

    f.write("/** \\brief Encode function for %s ies.\n" % (key))
    f.write(" *  \\param %s Pointer to the ASN1 structure.\n" % (firstlower))
    f.write(" *  \\param %s Pointer to the IES structure.\n" % (lowerFirstCamelWord(re.sub('-', '_', key))))
    f.write(" **/\n")
    f.write("int %s_encode_%s(\n" % (fileprefix, re.sub('-', '_', structName.lower())))
    f.write("    %s_t *%s,\n" % (asn1cStruct, firstlower))
    f.write("    %s_t *%s);\n\n" % (re.sub('-', '_', key), lowerFirstCamelWord(re.sub('-', '_', key))))

for key in iesDefs:
    if key not in ieofielist.values():
        continue
    asn1cStruct = re.sub('-', '_', re.sub('IEs', '', key))
    asn1cStruct = re.sub('Item', 'List', asn1cStruct)
    firstlower = re.sub('Item', 'List', re.sub('enb', 'eNB', lowerFirstCamelWord(asn1cStruct)))
    f.write("/** \\brief Encode function for %s ies.\n" % (key))
    f.write(" *  \\param %s Pointer to the ASN1 structure.\n" % (firstlower))
    f.write(" *  \\param %s Pointer to the IES structure.\n" % (lowerFirstCamelWord(re.sub('-', '_', key))))
    f.write(" **/\n")
    f.write("int %s_encode_%s(\n" % (fileprefix, firstlower.lower()))
    f.write("    %s_t *%s,\n" % (asn1cStruct, firstlower))
    f.write("    %sIEs_t *%sIEs);\n\n" % (asn1cStruct, firstlower))
    f.write("/** \\brief Decode function for %s ies.\n" % (key))
    f.write(" *  \\param any_p Pointer to the ANY value to decode.\n")
    f.write(" *  \\param callback Callback function called when any_p is successfully decoded.\n")
    f.write(" **/\n")
    f.write("int %s_decode_%s(\n" % (fileprefix, firstlower.lower()))
    f.write("    %sIEs_t *%sIEs,\n" % (asn1cStruct, firstlower))
    f.write("    %s_t *%s);\n\n" % (asn1cStruct, lowerFirstCamelWord(asn1cStruct)))
f.write("#endif /* %s_IES_DEFS_H_ */\n\n" % (fileprefix.upper()))

#Generate Decode functions
f = open(outdir + fileprefix + '_decoder.c', 'w')
outputHeaderToFile(f, filename)
f.write("#include \"%s_common.h\"\n#include \"%s_ies_defs.h\"\n\n" % (fileprefix, fileprefix))
for key in iesDefs:
    if key in ieofielist.values():
        continue
    structName = re.sub('ies', '', key)
    asn1cStruct = re.sub('-', '_', re.sub('IEs', '', key))
    asn1cStruct = re.sub('Item', 'List', asn1cStruct)
    ielistname = re.sub('UE', 'ue', asn1cStruct)
    ielistnamefirstlower = ielistname[:1].lower() + ielistname[1:]
    asn1cStructfirstlower = asn1cStruct[:1].lower() + asn1cStruct[1:]
    keyName = re.sub('-', '_', key)
    keyupperunderscore = keyName.upper()
    firstlower = re.sub('Item', 'List', re.sub('enb', 'eNB', lowerFirstCamelWord(asn1cStruct)))

    iesaccess = ""
    if key not in ieofielist.values():
        iesaccess = "%s_ies." % (firstlower)

    f.write("int %s_decode_%s(\n" % (fileprefix, re.sub('-', '_', structName.lower())))
    if len(iesDefs[key]["ies"]) != 0:
        f.write("    %s_t *%s,\n" % (re.sub('-', '_', key), lowerFirstCamelWord(re.sub('-', '_', key))))
    f.write("    ANY_t *any_p) {\n\n")

    f.write("    %s_t  %s;\n    %s_t *%s_p = &%s;\n" % (asn1cStruct, asn1cStructfirstlower, asn1cStruct, asn1cStructfirstlower, asn1cStructfirstlower))
    f.write("    int i, decoded = 0;\n")
    if len(iesDefs[key]["ies"]) != 0:
        f.write("    int tempDecoded = 0;\n")

    f.write("    assert(any_p != NULL);\n")
    if len(iesDefs[key]["ies"]) != 0:
        f.write("    assert(%s != NULL);\n\n" % (lowerFirstCamelWord(re.sub('-', '_', key))))

    f.write("    %s_DEBUG(\"Decoding message %s (%%s:%%d)\\n\", __FILE__, __LINE__);\n\n" % (fileprefix.upper(), re.sub('-', '_', keyName)))
    f.write("    ANY_to_type_aper(any_p, &asn_DEF_%s, (void**)&%s_p);\n\n" % (asn1cStruct, asn1cStructfirstlower))
    f.write("    for (i = 0; i < %s_p->%slist.count; i++) {\n" % (asn1cStructfirstlower, iesaccess))
    f.write("        IE_t *ie_p;\n")
    f.write("        ie_p = %s_p->%slist.array[i];\n" % (asn1cStructfirstlower, iesaccess))
    f.write("        switch(ie_p->id) {\n")
    for ie in iesDefs[key]["ies"]:
        iename = re.sub('id-', '', ie[0])
        ienameunderscore = lowerFirstCamelWord(re.sub('-', '_', iename))
        ienameunderscorefirstlower = lowerFirstCamelWord(ienameunderscore)
        ietypesubst = re.sub('-', '', ie[2])
        ietypeunderscore = re.sub('-', '_', ie[2])
        ieupperunderscore = re.sub('-', '_', ie[2]).upper()
        if ie[3] == "optional":
            f.write("            /* Optional field */\n")
        elif ie[3] == "conditional":
            f.write("            /* Conditional field */\n")
        f.write("            case ProtocolIE_ID_%s:\n" % (re.sub('-', '_', ie[0])))
        f.write("            {\n")
        f.write("                %s_t  %s;\n" % (ietypeunderscore, lowerFirstCamelWord(ietypesubst)))
        f.write("                %s_t *%s_p = &%s;\n" % (ietypeunderscore, lowerFirstCamelWord(ietypesubst), lowerFirstCamelWord(ietypesubst)))
        if ie[3] != "mandatory":
            f.write("                %s->presenceMask |= %s_%s_PRESENT;\n" % (lowerFirstCamelWord(re.sub('-', '_', key)), keyupperunderscore, ieupperunderscore))
        f.write("                tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_%s, (void**)&%s_p);\n" % (ietypeunderscore, lowerFirstCamelWord(ietypesubst)))
        f.write("                if (tempDecoded < 0) {\n")
        f.write("                    %s_DEBUG(\"Decoding of IE %s failed\\n\");\n" % (fileprefix.upper(), ienameunderscore))
        f.write("                    return -1;\n")
        f.write("                }\n")
        f.write("                decoded += tempDecoded;\n")
        f.write("                if (asn1_xer_print)\n")
        f.write("                    xer_fprint(stdout, &asn_DEF_%s, %s_p);\n" % (ietypeunderscore, lowerFirstCamelWord(ietypesubst)))
        if ie[2] in ieofielist.keys():
            f.write("                if (%s_decode_%s(&%s->%s, %s_p) < 0)\n" % (fileprefix, ietypeunderscore.lower(), lowerFirstCamelWord(re.sub('-', '_', key)), ienameunderscore, lowerFirstCamelWord(ietypesubst)))
            f.write("                    %s_DEBUG(\"Decoding of encapsulated IE %s failed\\n\");\n" % (fileprefix.upper(), lowerFirstCamelWord(ietypesubst)))
        else:
            f.write("                memcpy(&%s->%s, %s_p, sizeof(%s_t));\n" % (lowerFirstCamelWord(re.sub('-', '_', key)), ienameunderscore, lowerFirstCamelWord(ietypesubst), ietypeunderscore))
        f.write("            } break;\n")
    f.write("            default:\n")
    f.write("                %s_DEBUG(\"Unknown protocol IE id (%%d) for message %s\\n\", (int)ie_p->id);\n" % (fileprefix.upper(), re.sub('-', '_', structName.lower())))
    f.write("                return -1;\n")
    f.write("        }\n")
    f.write("    }\n")
    f.write("    return decoded;\n")
    f.write("}\n\n")

for key in iesDefs:
    if key not in ieofielist.values():
        continue

    keyname = re.sub('IEs', '', re.sub('Item', 'List', key))

    f.write("int %s_decode_%s(\n" % (fileprefix, re.sub('-', '_', keyname).lower()))
    f.write("    %sIEs_t *%sIEs,\n" % (re.sub('-', '_', keyname), lowerFirstCamelWord(re.sub('-', '_', keyname))))
    f.write("    %s_t *%s) {\n\n" % (re.sub('-', '_', keyname), lowerFirstCamelWord(re.sub('-', '_', keyname))))
    f.write("    int i, decoded = 0;\n")
    f.write("    int tempDecoded = 0;\n\n")
    f.write("    for (i = 0; i < %s->list.count; i++) {\n" % (lowerFirstCamelWord(re.sub('-', '_', keyname))))
    f.write("        IE_t *ie_p = %s->list.array[i];\n" % (lowerFirstCamelWord(re.sub('-', '_', keyname))))
    f.write("        switch (ie_p->id) {\n")
    for ie in iesDefs[key]["ies"]:
        iename = re.sub('id-', '', ie[0])
        ienameunderscore = lowerFirstCamelWord(re.sub('-', '_', iename))
        f.write("            case ProtocolIE_ID_%s:\n" % (re.sub('-', '_', ie[0])))
        f.write("            {\n")
        f.write("                %s_t *%s_p;\n" % (re.sub('-', '_', ie[2]), lowerFirstCamelWord(re.sub('-', '', ie[2]))))
        f.write("                tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_%s, (void**)&%s_p);\n" % (re.sub('-', '_', ie[2]), lowerFirstCamelWord(re.sub('-', '', ie[2]))))
        f.write("                if (tempDecoded < 0) {\n")
        f.write("                    %s_DEBUG(\"Decoding of IE %s for message %s failed\\n\");\n" % (fileprefix.upper(), ienameunderscore, re.sub('-', '_', keyname)))
        f.write("                    return -1;\n")
        f.write("                }\n")
        f.write("                decoded += tempDecoded;\n")
        f.write("                if (asn1_xer_print)\n")
        f.write("                    xer_fprint(stdout, &asn_DEF_%s, %s_p);\n" % (re.sub('-', '_', ie[2]), lowerFirstCamelWord(re.sub('-', '', ie[2]))))
        f.write("                ASN_SEQUENCE_ADD(&%sIEs->%s, %s_p);\n" % (lowerFirstCamelWord(re.sub('-', '_', keyname)),
        re.sub('IEs', '', lowerFirstCamelWord(re.sub('-', '_', key))), lowerFirstCamelWord(re.sub('-', '', ie[2]))))
        f.write("            } break;\n")
    f.write("            default:\n")
    f.write("                %s_DEBUG(\"Unknown protocol IE id (%%d) for message %s\\n\", (int)ie_p->id);\n" % (fileprefix.upper(), re.sub('-', '_', structName.lower())))
    f.write("                return -1;\n")
    f.write("        }\n")
    f.write("    }\n")
    f.write("    return decoded;\n")
    f.write("}\n\n")


#Generate IES Encode functions
f = open(outdir + fileprefix + '_encoder.c', 'w')
outputHeaderToFile(f,filename)
f.write("#include \"%s_common.h\"\n" % (fileprefix))
f.write("#include \"%s_ies_defs.h\"\n\n" % (fileprefix))
for key in iesDefs:
    if key in ieofielist.values():
        continue

    structName = re.sub('ies', '', key)
    asn1cStruct = re.sub('-', '_', re.sub('IEs', '', key))
    asn1cStruct = re.sub('Item', 'List', asn1cStruct)
    asn1cStructfirstlower = asn1cStruct[:1].lower() + asn1cStruct[1:]
    firstwordlower = re.sub('Item', 'List', re.sub('enb', 'eNB', lowerFirstCamelWord(asn1cStruct)))

    iesaccess = ""
    if key not in ieofielist.values():
        iesaccess = "%s_ies." % (firstwordlower)

    keyName = re.sub('-', '_', key)
    keyupperunderscore = keyName.upper()
    # No IE to encode...
    if len(iesDefs[key]["ies"]) == 0:
        continue

    f.write("int %s_encode_%s(\n" % (fileprefix, re.sub('-', '_', structName.lower())))
    f.write("    %s_t *%s,\n" % (asn1cStruct, firstwordlower))
    f.write("    %s_t *%s) {\n\n" % (re.sub('-', '_', key), lowerFirstCamelWord(re.sub('-', '_', key))))

    f.write("    IE_t *ie;\n\n")

    for ie in iesDefs[key]["ies"]:
        iename = re.sub('-', '_', re.sub('id-', '', ie[0]))
        ienameunderscore = re.sub('-', '_', iename)
        ienamefirstwordlower = lowerFirstCamelWord(iename)
        ieupperunderscore = re.sub('-', '_', ie[2]).upper()
        ietypeunderscore = re.sub('-', '_', ie[2])
        if ie[3] != "mandatory":
            if ie[3] == "optional":
                f.write("    /* Optional field */\n")
            elif ie[3] == "conditional":
                f.write("    /* Conditional field */\n")
            f.write("    if ((%s->presenceMask & %s_%s_PRESENT)\n" % (lowerFirstCamelWord(re.sub('-', '_', key)), keyupperunderscore, ieupperunderscore))
            f.write("        == %s_%s_PRESENT) {\n" % (keyupperunderscore, ieupperunderscore))
            f.write("        if ((ie = %s_new_ie(ProtocolIE_ID_%s,\n" % (fileprefix, re.sub('-', '_', ie[0])))
            f.write("                              Criticality_%s,\n" % (ie[1]))
            f.write("                              &asn_DEF_%s,\n" % (ietypeunderscore))
            f.write("                              &%s->%s)) == NULL) {\n" % (lowerFirstCamelWord(re.sub('-', '_', key)), ienamefirstwordlower))
            f.write("            return -1;\n")
            f.write("        }\n")
            f.write("        ASN_SEQUENCE_ADD(&%s->%slist, ie);\n" % (firstwordlower, iesaccess))
            f.write("    }\n\n")
        else:
            if ie[2] in ieofielist.keys():
                f.write("    %s_t %s;\n\n" % (ietypeunderscore, ienamefirstwordlower))
                f.write("    memset(&%s, 0, sizeof(%s_t));\n" % (ienamefirstwordlower, ietypeunderscore))
                f.write("\n")
                f.write("    if (%s_encode_%s(&%s, &%s->%s) < 0) return -1;\n" % (fileprefix, ietypeunderscore.lower(), ienamefirstwordlower, lowerFirstCamelWord(re.sub('-', '_', key)), ienamefirstwordlower))
            f.write("    if ((ie = %s_new_ie(ProtocolIE_ID_%s,\n" % (fileprefix, re.sub('-', '_', ie[0])))
            f.write("                          Criticality_%s,\n" % (ie[1]))
            f.write("                          &asn_DEF_%s,\n" % (ietypeunderscore))
            if ie[2] in ieofielist.keys():
                f.write("                          &%s)) == NULL) {\n" % (ienamefirstwordlower))
            else:
                f.write("                          &%s->%s)) == NULL) {\n" % (lowerFirstCamelWord(re.sub('-', '_', key)), ienamefirstwordlower))
            f.write("        return -1;\n")
            f.write("    }\n")
            f.write("    ASN_SEQUENCE_ADD(&%s->%slist, ie);\n\n" % (firstwordlower, iesaccess))

    f.write("    return 0;\n")
    f.write("}\n\n")

for (key, value) in iesDefs.items():
    if key not in ieofielist.values():
        continue

    ie = value["ies"][0]
    ietypeunderscore = re.sub('-', '_', ie[2])
    asn1cStruct = re.sub('-', '_', re.sub('IEs', '', re.sub('-IEs', '', key)))
    asn1cStruct = re.sub('Item', 'List', asn1cStruct)
    firstwordlower = re.sub('Item', 'List', re.sub('enb', 'eNB', lowerFirstCamelWord(asn1cStruct)))

    for (i, j) in ieofielist.items():
        if j == key:
            break
    f.write("int %s_encode_%s(\n" % (fileprefix, re.sub('-', '_', i).lower()))
    f.write("    %s_t *%s,\n" % (asn1cStruct, firstwordlower))
    f.write("    %sIEs_t *%sIEs) {\n\n" % (re.sub('-', '_', i), lowerFirstCamelWord(re.sub('-', '_', i))))
    f.write("    int i;\n")

    f.write("    IE_t *ie;\n\n")

    f.write("    for (i = 0; i < %sIEs->%s.count; i++) {\n" % (firstwordlower, re.sub('IEs', '', lowerFirstCamelWord(re.sub('-', '_', key)))))
    f.write("        if ((ie = %s_new_ie(ProtocolIE_ID_%s,\n" % (fileprefix, re.sub('-', '_', ie[0])))
    f.write("                              Criticality_%s,\n" % (ie[1]))
    f.write("                              &asn_DEF_%s,\n" % (ietypeunderscore))
    f.write("                              %sIEs->%s.array[i])) == NULL) {\n" % (firstwordlower, re.sub('IEs', '', lowerFirstCamelWord(re.sub('-', '_', key)))))
    f.write("            return -1;\n")
    f.write("        }\n")
    f.write("        ASN_SEQUENCE_ADD(&%s->list, ie);\n" % (firstwordlower))
    f.write("    }\n")
    f.write("    return 0;\n")
    f.write("}\n\n")