Iterating through a SEQ OF with get_at method

dbressan2 commented 2 years ago

Hi

I am attempting to get an octet string object corresponding to each instance of ueCapabilityRAT-Container

I am getting unexpected results with get_at where it always returns the octet string corresponding to last instance of ueCapabilityRAT-Container, whereas I would like to iterate through each instance. How can we use get_at for SEQ OF ?

I am trying the following code:

message0 = """ 3e 03 08 19 2d db 80 50 30 9f bf 7e 0c 1f 83 f0 7e 0f df 83 76 26 80 08 0d cf 64 00 00 00 01 78 68 0c 0a 0c 77 c0 00 00 00 b2 f0 03 00 24 10 86 00 60 84 30 03 00 30 40 18 20 0c 20 84 30 42 18 21 0c 10 86 08 43 00 30 80 10 c2 00 43 04 01 82 00 c0 0c 00 c0 09 68 3e aa 30 e0 b8 18 40 00 82 07 f8 00 20 80 fe 10 00 ff 00 04 00 70 80 01 05 08 20 81 84 00 09 20 ff 80 02 0b f8 41 03 fc 00 12 40 ff 00 04 50 7f c0 01 01 fc 20 82 fe 10 3f c0 01 04 2f f0 00 41 7f 08 2f e1 04 1f f0 00 49 7f 08 20 bf 84 9f f0 00 41 07 fc 00 11 5f c2 08 2f e1 17 fc 00 10 40 ff 00 04 d0 bf c0 01 01 fc 20 bf 84 10 9f c2 07 f8 00 20 bf 84 10 7f c0 01 01 fc 24 82 fe 10 3f c0 01 24 0c 20 10 49 03 fc 04 12 40 ff 00 84 52 e0 fc 1f 83 f0 7e 0f c1 f8 3f 07 e0 fc 1f 83 f0 7e 0f c1 f8 3f 07 e0 fc 1f 83 f0 7e 0f c1 f8 3f 07 ed 9d 00 00 11 97 08 b8 00 00 e5 c0 00 40 40 40 80 41 81 00 00 50 14 04 04 04 04 04 14 19 01 05 06 40 42 40 50 14 04 14 05 01 05 01 40 41 40 50 10 50 14 04 04 04 24 19 01 40 42 41 90 14 04 14 19 01 05 06 40 40 00 40 40 40 66 80 03 e6 57 9a 04 01 48 7f f9 a5 2e f1 c0 3a 00 16 08 00 64 92 00 00 40 00 a2 09 73 40 00 a1 e1 00 00 00 21 00 00 01 02 08 20 80 00 20 82 18 20 82 08 20 80 18 00 00 00 51 90 00 00 00 40 02 20 10 50 42 05 81 0c e1 20 10 00 07 4f 5a 13 02 00 02 01 40 48 24 c5 80 02 60 d4 0c 13 60 18 73 e6 18 f2 85 81 c1 30 08 0c 41 00 3a 0d 85 18 1a c1 18 43 41 02 0f 94 02 2c b6 4c 55 0d 0e 7c 47 1e 81 9f 60 4f 8c 73 e6 18 f2 85 81 c0 e1 e0 b8 00 27 80 0e 00 09 e0 00 38 01 c0 00 20 0a 01 47 27 80 22 03 01 f0 28 01 00 00 00 00 80 00 01 00 40 00 01 00 20 00 00 c0 10 00 00 60 08 00 00 40 04 00 00 28 02 00 00 18 01 00 00 04 00 80 00 07 00 40 00 04 01 0c a9 bc a9 ac 0c ac 0d ac 99 ac a5 ac 8d ac 04 ac 08 a0 48 20 00 01 2c a4 a0 80 00 0c b2 92 82 00 00 52 ca 48 08 00 01 cb 29 20 20 00 09 2c a4 80 80 00 2c b2 92 02 00 00 d2 ca 48 08 00 03 cb 29 20 20 00 11 2c a4 80 80 00 4c b2 92 01 2a 55 57 4a aa a8 1c 55 2a 8b a5 51 54 9a 2a 94 c5 52 38 aa 03 15 40 a2 80 87 40 2a 81 40 e0 70 28 14 0a 05 02 81 40 a0 08 50 18 12 0a 12 32 00 62 5a 10 7c 04 a1 60 40 1c 28 00 00 00 44 00 40 14 02 80 b0 03 a0 30 a7 42 d8 e7 c3 10 00 08 00 08 02 02 00 80 28 00 """.replace(" ", "").replace("\n", "") dcch = lte_g80.EUTRA_RRC_Definitions.UL_DCCH_Message dcch.from_uper(bytes.fromhex(message0)) print (dcch.to_asn1()) container_list = ['message', 'c1', 'ueCapabilityInformation', 'criticalExtensions', 'c1', 'ueCapabilityInformation-r8', 'ue-CapabilityRAT-ContainerList']

print (dcch.to_asn1()) num_tech = 3 for tech in range(num_tech):

tech_rat_container = dcch.get_val_at(container_list + [tech])
rat_info = tech_rat_container['rat-Type']
print(rat_info)
# this works 
container = tech_rat_container['ueCapabilityRAT-Container']
print (container)
# this does not work and returns last ueCapabilityRAT-Container regardless of tech value 
oct_str = dcch.get_at(container_list + [tech, 'ueCapabilityRAT-Container']) 
print ("oct str for rat info {0} = {1}".format(rat_info, oct_str._val.hex()))

Thanks

p1-bmu commented 2 years ago

get_at() is for selecting a sub-object from a constructed one. Here, you better want to use get_val_at() to select a sub-value from a value assigned to the constructed object.

dbressan2 commented 2 years ago

Thanks

My problem is that I am trying to link object to invoke NR decoding for ueCapabilityRAT-Container for NR rat

Something like:

 if rat_info == "nr":
     print(oct_str._val.hex())
     _cont_UE_NR_Capability = SEQ(name='UE-NR-Capability', mode=MODE_TYPE,
                                  typeref=ASN1RefType(('NR-RRC-Definitions', 'UE-NR-Capability')))
     oct_str._const_cont =  _cont_UE_NR_Capability
     oct_str._const_cont_enc = None
     extensions = [_cont_UE_NR_Capability]
     lte_g80.EUTRA_RRC_Definitions._all_.extend(extensions)
     init_modules(lte_g80.EUTRA_RRC_Definitions)
     dcch.from_uper(bytes.fromhex(message0))

So I somehow need to select the sub-object corresponding to ueCapabilityRAT-Container for rat-Type = nr. Any way I can achieve this ?

Thank you very much for your help

Best regards

dB

From: Benoit Michau @.> Sent: Wednesday, May 18, 2022 12:39 PM To: P1sec/pycrate @.> Cc: Dominique Bressanelli @.>; Author @.> Subject: Re: [P1sec/pycrate] Iterating through a SEQ OF with get_at method (Issue #195)

WARNING: This email originated from outside of Qualcomm. Please be wary of any links or attachments, and do not enable macros.

get_at() is for selecting a sub-object from a constructed one. Here, you better want to use get_val_at() to select a sub-value from a value assigned to the constructed object.

— Reply to this email directly, view it on GitHubhttps://github.com/P1sec/pycrate/issues/195#issuecomment-1129850360, or unsubscribehttps://github.com/notifications/unsubscribe-auth/AHUUMPLLKEFNO4BS2S7JKGDVKTCF7ANCNFSM5WET5KZQ. You are receiving this because you authored the thread.Message ID: @.**@.>>

dbressan2 commented 2 years ago

Hi

For clarity, here is the code I am trying to write:

message0 = """ 3e 03 08 19 2d db 80 50 30 9f bf 7e 0c 1f 83 f0 7e 0f df 83 76 26 80 08 0d cf 64 00 00 00 01 78 68 0c 0a 0c 77 c0 00 00 00 b2 f0 03 00 24 10 86 00 60 84 30 03 00 30 40 18 20 0c 20 84 30 42 18 21 0c 10 86 08 43 00 30 80 10 c2 00 43 04 01 82 00 c0 0c 00 c0 09 68 3e aa 30 e0 b8 18 40 00 82 07 f8 00 20 80 fe 10 00 ff 00 04 00 70 80 01 05 08 20 81 84 00 09 20 ff 80 02 0b f8 41 03 fc 00 12 40 ff 00 04 50 7f c0 01 01 fc 20 82 fe 10 3f c0 01 04 2f f0 00 41 7f 08 2f e1 04 1f f0 00 49 7f 08 20 bf 84 9f f0 00 41 07 fc 00 11 5f c2 08 2f e1 17 fc 00 10 40 ff 00 04 d0 bf c0 01 01 fc 20 bf 84 10 9f c2 07 f8 00 20 bf 84 10 7f c0 01 01 fc 24 82 fe 10 3f c0 01 24 0c 20 10 49 03 fc 04 12 40 ff 00 84 52 e0 fc 1f 83 f0 7e 0f c1 f8 3f 07 e0 fc 1f 83 f0 7e 0f c1 f8 3f 07 e0 fc 1f 83 f0 7e 0f c1 f8 3f 07 ed 9d 00 00 11 97 08 b8 00 00 e5 c0 00 40 40 40 80 41 81 00 00 50 14 04 04 04 04 04 14 19 01 05 06 40 42 40 50 14 04 14 05 01 05 01 40 41 40 50 10 50 14 04 04 04 24 19 01 40 42 41 90 14 04 14 19 01 05 06 40 40 00 40 40 40 66 80 03 e6 57 9a 04 01 48 7f f9 a5 2e f1 c0 3a 00 16 08 00 64 92 00 00 40 00 a2 09 73 40 00 a1 e1 00 00 00 21 00 00 01 02 08 20 80 00 20 82 18 20 82 08 20 80 18 00 00 00 51 90 00 00 00 40 02 20 10 50 42 05 81 0c e1 20 10 00 07 4f 5a 13 02 00 02 01 40 48 24 c5 80 02 60 d4 0c 13 60 18 73 e6 18 f2 85 81 c1 30 08 0c 41 00 3a 0d 85 18 1a c1 18 43 41 02 0f 94 02 2c b6 4c 55 0d 0e 7c 47 1e 81 9f 60 4f 8c 73 e6 18 f2 85 81 c0 e1 e0 b8 00 27 80 0e 00 09 e0 00 38 01 c0 00 20 0a 01 47 27 80 22 03 01 f0 28 01 00 00 00 00 80 00 01 00 40 00 01 00 20 00 00 c0 10 00 00 60 08 00 00 40 04 00 00 28 02 00 00 18 01 00 00 04 00 80 00 07 00 40 00 04 01 0c a9 bc a9 ac 0c ac 0d ac 99 ac a5 ac 8d ac 04 ac 08 a0 48 20 00 01 2c a4 a0 80 00 0c b2 92 82 00 00 52 ca 48 08 00 01 cb 29 20 20 00 09 2c a4 80 80 00 2c b2 92 02 00 00 d2 ca 48 08 00 03 cb 29 20 20 00 11 2c a4 80 80 00 4c b2 92 01 2a 55 57 4a aa a8 1c 55 2a 8b a5 51 54 9a 2a 94 c5 52 38 aa 03 15 40 a2 80 87 40 2a 81 40 e0 70 28 14 0a 05 02 81 40 a0 08 50 18 12 0a 12 32 00 62 5a 10 7c 04 a1 60 40 1c 28 00 00 00 44 00 40 14 02 80 b0 03 a0 30 a7 42 d8 e7 c3 10 00 08 00 08 02 02 00 80 28 00 """.replace(" ", "").replace("\n", "") dcch = lte_g80.EUTRA_RRC_Definitions.UL_DCCH_Message dcch.from_uper(bytes.fromhex(message0)) print (dcch.to_asn1()) container_list = ['message', 'c1', 'ueCapabilityInformation', 'criticalExtensions', 'c1', 'ueCapabilityInformation-r8', 'ue-CapabilityRAT-ContainerList']

print (dcch.to_asn1()) num_tech = 3 extensions = [] for tech in range(num_tech):

tech_rat_container = dcch.get_val_at(container_list + [tech])
rat_info = tech_rat_container['rat-Type']
print(rat_info)
container = tech_rat_container['ueCapabilityRAT-Container']
print (container)
# this does not work as it always returns the octet string for last 'ueCapabilityRAT-Container', regardless of tech value
oct_str = dcch.get_at(container_list + [tech, 'ueCapabilityRAT-Container'])
print ("oct str for rat info {0} = {1}".format(rat_info, oct_str._val.hex()))
# print (oct_str)
# print (oct_str.get_val_paths())
if rat_info == "nr":
    print(oct_str._val.hex())
    _cont_UE_NR_Capability = SEQ(name='UE-NR-Capability', mode=MODE_TYPE,
                                  typeref=ASN1RefType(('NR-RRC-Definitions', 'UE-NR-Capability')))
    oct_str._const_cont =  _cont_UE_NR_Capability
    oct_str._const_cont_enc = None
    # extensions = [_cont_UE_NR_Capability]
    lte_g80.EUTRA_RRC_Definitions._all_.extend(extensions)
    init_modules(lte_g80.EUTRA_RRC_Definitions)
    dcch.from_uper(bytes.fromhex(message0))

Thank you very much for your help

Best regards

dB

From: Dominique Bressanelli Sent: Wednesday, May 18, 2022 12:47 PM To: P1sec/pycrate @.>; P1sec/pycrate @.> Cc: Author @.***> Subject: RE: [P1sec/pycrate] Iterating through a SEQ OF with get_at method (Issue #195)

Thanks

My problem is that I am trying to link object to invoke NR decoding for ueCapabilityRAT-Container for NR rat

Something like:

 if rat_info == "nr":
     print(oct_str._val.hex())
     _cont_UE_NR_Capability = SEQ(name='UE-NR-Capability', mode=MODE_TYPE,
                                  typeref=ASN1RefType(('NR-RRC-Definitions', 'UE-NR-Capability')))
     oct_str._const_cont =  _cont_UE_NR_Capability
     oct_str._const_cont_enc = None
     extensions = [_cont_UE_NR_Capability]
     lte_g80.EUTRA_RRC_Definitions._all_.extend(extensions)
     init_modules(lte_g80.EUTRA_RRC_Definitions)
     dcch.from_uper(bytes.fromhex(message0))

So I somehow need to select the sub-object corresponding to ueCapabilityRAT-Container for rat-Type = nr. Any way I can achieve this ?

Thank you very much for your help

Best regards

dB

From: Benoit Michau @.**@.>> Sent: Wednesday, May 18, 2022 12:39 PM To: P1sec/pycrate @.**@.>> Cc: Dominique Bressanelli @.**@.>>; Author @.**@.>> Subject: Re: [P1sec/pycrate] Iterating through a SEQ OF with get_at method (Issue #195)

WARNING: This email originated from outside of Qualcomm. Please be wary of any links or attachments, and do not enable macros.

get_at() is for selecting a sub-object from a constructed one. Here, you better want to use get_val_at() to select a sub-value from a value assigned to the constructed object.

— Reply to this email directly, view it on GitHubhttps://github.com/P1sec/pycrate/issues/195#issuecomment-1129850360, or unsubscribehttps://github.com/notifications/unsubscribe-auth/AHUUMPLLKEFNO4BS2S7JKGDVKTCF7ANCNFSM5WET5KZQ. You are receiving this because you authored the thread.Message ID: @.**@.>>

dbressan2 commented 2 years ago

Hi

Is there any way of selecting a sub-object belonging to a SEQ OF ?

I have not found any good method so far.

Thank you very much for your help

Best regards

dB

From: Dominique Bressanelli Sent: Thursday, May 19, 2022 8:03 AM To: P1sec/pycrate @.>; P1sec/pycrate @.> Cc: Author @.***> Subject: RE: [P1sec/pycrate] Iterating through a SEQ OF with get_at method (Issue #195)

Hi

For clarity, here is the code I am trying to write:

message0 = """ 3e 03 08 19 2d db 80 50 30 9f bf 7e 0c 1f 83 f0 7e 0f df 83 76 26 80 08 0d cf 64 00 00 00 01 78 68 0c 0a 0c 77 c0 00 00 00 b2 f0 03 00 24 10 86 00 60 84 30 03 00 30 40 18 20 0c 20 84 30 42 18 21 0c 10 86 08 43 00 30 80 10 c2 00 43 04 01 82 00 c0 0c 00 c0 09 68 3e aa 30 e0 b8 18 40 00 82 07 f8 00 20 80 fe 10 00 ff 00 04 00 70 80 01 05 08 20 81 84 00 09 20 ff 80 02 0b f8 41 03 fc 00 12 40 ff 00 04 50 7f c0 01 01 fc 20 82 fe 10 3f c0 01 04 2f f0 00 41 7f 08 2f e1 04 1f f0 00 49 7f 08 20 bf 84 9f f0 00 41 07 fc 00 11 5f c2 08 2f e1 17 fc 00 10 40 ff 00 04 d0 bf c0 01 01 fc 20 bf 84 10 9f c2 07 f8 00 20 bf 84 10 7f c0 01 01 fc 24 82 fe 10 3f c0 01 24 0c 20 10 49 03 fc 04 12 40 ff 00 84 52 e0 fc 1f 83 f0 7e 0f c1 f8 3f 07 e0 fc 1f 83 f0 7e 0f c1 f8 3f 07 e0 fc 1f 83 f0 7e 0f c1 f8 3f 07 ed 9d 00 00 11 97 08 b8 00 00 e5 c0 00 40 40 40 80 41 81 00 00 50 14 04 04 04 04 04 14 19 01 05 06 40 42 40 50 14 04 14 05 01 05 01 40 41 40 50 10 50 14 04 04 04 24 19 01 40 42 41 90 14 04 14 19 01 05 06 40 40 00 40 40 40 66 80 03 e6 57 9a 04 01 48 7f f9 a5 2e f1 c0 3a 00 16 08 00 64 92 00 00 40 00 a2 09 73 40 00 a1 e1 00 00 00 21 00 00 01 02 08 20 80 00 20 82 18 20 82 08 20 80 18 00 00 00 51 90 00 00 00 40 02 20 10 50 42 05 81 0c e1 20 10 00 07 4f 5a 13 02 00 02 01 40 48 24 c5 80 02 60 d4 0c 13 60 18 73 e6 18 f2 85 81 c1 30 08 0c 41 00 3a 0d 85 18 1a c1 18 43 41 02 0f 94 02 2c b6 4c 55 0d 0e 7c 47 1e 81 9f 60 4f 8c 73 e6 18 f2 85 81 c0 e1 e0 b8 00 27 80 0e 00 09 e0 00 38 01 c0 00 20 0a 01 47 27 80 22 03 01 f0 28 01 00 00 00 00 80 00 01 00 40 00 01 00 20 00 00 c0 10 00 00 60 08 00 00 40 04 00 00 28 02 00 00 18 01 00 00 04 00 80 00 07 00 40 00 04 01 0c a9 bc a9 ac 0c ac 0d ac 99 ac a5 ac 8d ac 04 ac 08 a0 48 20 00 01 2c a4 a0 80 00 0c b2 92 82 00 00 52 ca 48 08 00 01 cb 29 20 20 00 09 2c a4 80 80 00 2c b2 92 02 00 00 d2 ca 48 08 00 03 cb 29 20 20 00 11 2c a4 80 80 00 4c b2 92 01 2a 55 57 4a aa a8 1c 55 2a 8b a5 51 54 9a 2a 94 c5 52 38 aa 03 15 40 a2 80 87 40 2a 81 40 e0 70 28 14 0a 05 02 81 40 a0 08 50 18 12 0a 12 32 00 62 5a 10 7c 04 a1 60 40 1c 28 00 00 00 44 00 40 14 02 80 b0 03 a0 30 a7 42 d8 e7 c3 10 00 08 00 08 02 02 00 80 28 00 """.replace(" ", "").replace("\n", "") dcch = lte_g80.EUTRA_RRC_Definitions.UL_DCCH_Message dcch.from_uper(bytes.fromhex(message0)) print (dcch.to_asn1()) container_list = ['message', 'c1', 'ueCapabilityInformation', 'criticalExtensions', 'c1', 'ueCapabilityInformation-r8', 'ue-CapabilityRAT-ContainerList']

print (dcch.to_asn1()) num_tech = 3 extensions = [] for tech in range(num_tech):

tech_rat_container = dcch.get_val_at(container_list + [tech])
rat_info = tech_rat_container['rat-Type']
print(rat_info)
container = tech_rat_container['ueCapabilityRAT-Container']
print (container)
# this does not work as it always returns the octet string for last 'ueCapabilityRAT-Container', regardless of tech value
oct_str = dcch.get_at(container_list + [tech, 'ueCapabilityRAT-Container'])
print ("oct str for rat info {0} = {1}".format(rat_info, oct_str._val.hex()))
# print (oct_str)
# print (oct_str.get_val_paths())
if rat_info == "nr":
    print(oct_str._val.hex())
    _cont_UE_NR_Capability = SEQ(name='UE-NR-Capability', mode=MODE_TYPE,
                                  typeref=ASN1RefType(('NR-RRC-Definitions', 'UE-NR-Capability')))
    oct_str._const_cont =  _cont_UE_NR_Capability
    oct_str._const_cont_enc = None
    # extensions = [_cont_UE_NR_Capability]
    lte_g80.EUTRA_RRC_Definitions._all_.extend(extensions)
    init_modules(lte_g80.EUTRA_RRC_Definitions)
    dcch.from_uper(bytes.fromhex(message0))

Thank you very much for your help

Best regards

dB

From: Dominique Bressanelli Sent: Wednesday, May 18, 2022 12:47 PM To: P1sec/pycrate @.**@.>>; P1sec/pycrate @.**@.>> Cc: Author @.**@.>> Subject: RE: [P1sec/pycrate] Iterating through a SEQ OF with get_at method (Issue #195)

Thanks

My problem is that I am trying to link object to invoke NR decoding for ueCapabilityRAT-Container for NR rat

Something like:

 if rat_info == "nr":
     print(oct_str._val.hex())
     _cont_UE_NR_Capability = SEQ(name='UE-NR-Capability', mode=MODE_TYPE,
                                  typeref=ASN1RefType(('NR-RRC-Definitions', 'UE-NR-Capability')))
     oct_str._const_cont =  _cont_UE_NR_Capability
     oct_str._const_cont_enc = None
     extensions = [_cont_UE_NR_Capability]
     lte_g80.EUTRA_RRC_Definitions._all_.extend(extensions)
     init_modules(lte_g80.EUTRA_RRC_Definitions)
     dcch.from_uper(bytes.fromhex(message0))

So I somehow need to select the sub-object corresponding to ueCapabilityRAT-Container for rat-Type = nr. Any way I can achieve this ?

Thank you very much for your help

Best regards

dB

From: Benoit Michau @.**@.>> Sent: Wednesday, May 18, 2022 12:39 PM To: P1sec/pycrate @.**@.>> Cc: Dominique Bressanelli @.**@.>>; Author @.**@.>> Subject: Re: [P1sec/pycrate] Iterating through a SEQ OF with get_at method (Issue #195)

WARNING: This email originated from outside of Qualcomm. Please be wary of any links or attachments, and do not enable macros.

get_at() is for selecting a sub-object from a constructed one. Here, you better want to use get_val_at() to select a sub-value from a value assigned to the constructed object.

— Reply to this email directly, view it on GitHubhttps://github.com/P1sec/pycrate/issues/195#issuecomment-1129850360, or unsubscribehttps://github.com/notifications/unsubscribe-auth/AHUUMPLLKEFNO4BS2S7JKGDVKTCF7ANCNFSM5WET5KZQ. You are receiving this because you authored the thread.Message ID: @.**@.>>

p1-bmu commented 2 years ago

The 1st level sub-object of a SEQUENCE OF (or SET OF) is not named in ASN.1. It's named _item_ in pycrate (because we still need one programmatically). And you don't need to pass any specific naming when selecting it with get_at().

See e.g. at the end of this section of the wiki: https://github.com/P1sec/pycrate/wiki/Using-the-pycrate-asn1-runtime#rrc-3g

dbressan2 commented 2 years ago

HI

I still do not understand how it is supposed to work. get_val_paths returns some paths and values for an object, but trying to access one path with get_at gives unexpected results.

container_list = ['message', 'c1', 'ueCapabilityInformation', 'criticalExtensions', 'c1', 'ueCapabilityInformation-r8', 'ue-CapabilityRAT-ContainerList']

containers = dcch.get_at(container_list) containers.get_val_paths() Out[22]: [([0, 'rat-Type'], 'eutra'), ([0, 'ueCapabilityRAT-Container'], b'\xdd\xb8\x05\x03\t\xfb\xf7\xe0\xc1\xf8?\x07\xe0\xfd\xf87bh\x00\x80\xdc\xf6@\x00\x00\x00\x17\x86\x80\xc0\xa0\xc7|\x00\x00\x00\x0b/\x000\x02A\x08\x06\x08C\x000\x03\x04\x01\x82\x00\xc2\x08C\x04!\x82\x10\xc1\x08\x840\x03\x08\x01\x0c \x040@\x18 \x0c\x00\xc0\x0c\x00\x96\x83\xea\xa3\x0e\x0b\x81\x84\x00\x08 \x7f\x80\x02\x08\x0f\xe1\x00\x0f\xf0\x00@\x07\x08\x00\x10P\x82\x08\x18@\x00\x92\x0f\xf8\x00 \xbf\x84\x10?\xc0\x01$\x0f\xf0\x00E\x07\xfc\x00\x10\x1f\xc2\x08/\xe1\x03\xfc\x00\x10B\xff\x00\x04\x17\xf0\x82\xfe\x10A\xff\x00\x04\x97\xf0\x82\x0b\xf8I\xff\x00\x04\x10\x7f\xc0\x01\x15\xfc \x82\xfe\x11\x7f\xc0\x01\x04\x0f\xf0\x00M\x0b\xfc\x00\x10\x1f\xc2\x0b\xf8A\t\xfc \x7f\x80\x02\x0b\xf8A\x07\xfc\x00\x10\x1f\xc2H/\xe1\x03\xfc\x00\x12@\xc2\x01\x04\x90?\xc0A$\x0f\xf0\x08E.\x0f\xc1\xf8?\x07\xe0\xfc\x1f\x83\xf0~\x0f\xc1\xf8?\x07\xe0\xfc\x1f\x83\xf0~\x0f\xc1\xf8?\x07\xe0\xfc\x1f\x83\xf0~\xd9\xd0\x00\x01\x19p\x8b\x80\x00\x0e\\x00\x04\x04\x04\x08\x04\x18\x10\x00\x05\x01@@@@@@.@P\x10P\x14\x04\x14\x05\x01\x05\x01@@@@.\x90\x10Pd\x04\x00\x04\x04\x04\x06h\x00>ey\xa0@\x14\x87\xff\x9aR\xef\x1c\x03\xa0\x01\x80\x06I \x00\x04\x00\n \x974\x00\n\x1e\x10\x00\x00\x02\x10\x00\x00\x10 \x82\x08\x00\x02\x08!\x82\x08 \x82\x08\x01\x80\x00\x00\x05\x19\x00\x00\x00\x04\x00"\x01\x05\x04 '), ([1, 'rat-Type'], 'nr'), ([1, 'ueCapabilityRAT-Container'], b'\xe1 ***@***.***$\xc5\x80\x02\xd4\x0c\x13\x18s\xe6\x18\xf2\x85\x81\xc10\x08\x0cA\x00:\r\x85\x18\x1a\xc1\x18CA\x02\x0f\x94\x02,\xb6LU\r\x0e|G\x1e\x81\x9fO\x8cs\xe6\x18\xf2\x85\x81\xc0\xe1\xe0\xb8\x00\'\x80\x0e\x00\t\xe0\x008\x01\xc0\x00 \n\x01G\'\x80"\x03\x01\xf0(\x01\x00\x00\x00\x00\x80\x00\x01\x00@\x00\x01\x00 \x00\x00\xc0\x10\x00\x00`\x08\x00\x00@\x04\x00\x00(\x02\x00\x00\x18\x01\x00\x00\x04\x00\x80\x00\x07\x00@\x00\x04\x01\x0c\xa9\xbc\xa9\xac\x0c\xac\r\xac\x99\xac\xa5\xac\x8d\xac\x04\xac\x08\xa0H \x00\x01,\xa4\xa0\x80\x00\x0c\xb2\x92\x82\x00\x00R\xcaH\x08\x00\x01\xcb) \x00\t,\xa4\x80\x80\x00,\xb2\x92\x02\x00\x00\xd2\xcaH\x08\x00\x03\xcb) \x00\x11,\xa4\x80\x80\x00L\xb2\x92\x01UWJ\xaa\xa8\x1cU\x8b\xa5QT\x9a\x94\xc5R8\xaa\x03\x15@\xa2\x80\x87@\x81@\xe0p(\x14\n\x05\x02\x81@\xa0\x08P\x18\x12\n\x122\x00'), ([2, 'rat-Type'], 'eutra-nr'), ([2, 'ueCapabilityRAT-Container'], b'\xa1\x07\xc0J\x16\x04\x01\xc2\x80\x00\x00\x04@\x04\x01@(\x0b\x00:\x03\nt-\x8e|1\x00\x00\x80\x00\x80 \x08\x02\x80')]

containers.get_at([1, 'rat-Type']).get_val()

Out[24]: 'eutra-nr' # why ? Expected value = ‘nr’

containers.get_at([5, 'rat-Type']).get_val() Out[25]: 'eutra-nr' # why ? this is an invalid paths.

Thank you very much for your help

Best regards

dB

From: Benoit Michau @.> Sent: Monday, June 27, 2022 11:52 AM To: P1sec/pycrate @.> Cc: Dominique Bressanelli @.>; Author @.> Subject: Re: [P1sec/pycrate] Iterating through a SEQ OF with get_at method (Issue #195)

WARNING: This email originated from outside of Qualcomm. Please be wary of any links or attachments, and do not enable macros.

The 1st level sub-object of a SEQUENCE OF (or SET OF) is not named in ASN.1. It's named item in pycrate (because we still need one programmatically). And you don't need to pass any specific naming when selecting it with get_at().

See e.g. at the end of this section of the wiki: https://github.com/P1sec/pycrate/wiki/Using-the-pycrate-asn1-runtime#rrc-3g

— Reply to this email directly, view it on GitHubhttps://github.com/P1sec/pycrate/issues/195#issuecomment-1167139264, or unsubscribehttps://github.com/notifications/unsubscribe-auth/AHUUMPKXUXC6K5SUQYEUA43VRF2VRANCNFSM5WET5KZQ. You are receiving this because you authored the thread.Message ID: @.**@.>>

p1-bmu commented 2 years ago

Is this the same issue as in https://github.com/P1sec/pycrate/issues/203 ? If yes, I suggest you close one of the too. Looking at what you do:

containers.get_at([1, 'rat-Type']).get_val()

I guess this is the same. And again, get_at() if for object, and there is not such itemized / different sub-object within a SEQUENCE OF, only a single object, but eventually several different values to be retrieved with get_val_at().

Eventually, go through the source code (https://github.com/P1sec/pycrate/blob/5fa6dda9d0ff8754225e78fc92dbbd9da3dc9546/pycrate_asn1rt/asnobj.py#L960). And if you are still lost, please ask for support internally at Qualcomm first.

dbressan2 commented 2 years ago

Hi Thanks for comments. The issue is indeed similar as #203, I am closing this one and we can track the discussion further with #203

P1sec / pycrate

Iterating through a SEQ OF with get_at method #195