laforge has uploaded this change for review. ( https://gerrit.osmocom.org/c/pysim/+/34851?usp=email ) Change subject: utils: Fix bertlv_encode_tag() for multi-byte tags ...................................................................... utils: Fix bertlv_encode_tag() for multi-byte tags We used to support only single-byte tags in bertlv_encode_tag, let's fix that. The easy option is to simply call bertlv_parse_tag, as that already supported multi-byte tags. Change-Id: If0bd9137883c4c8b01c4dfcbb53cabeee5c1ce2b --- M pySim/utils.py 1 file changed, 28 insertions(+), 8 deletions(-) git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/51/34851/1 diff --git a/pySim/utils.py b/pySim/utils.py index 6cacdaa..666f728 100644 --- a/pySim/utils.py +++ b/pySim/utils.py @@ -262,15 +262,22 @@ remainder = inp & ~ (inp << (remain_bits - bitcnt)) return outp, remainder + def count_int_bytes(inp: int) -> int: + """count the number of bytes require to represent the given integer.""" + i = 1 + inp = inp >> 8 + while inp: + i += 1 + inp = inp >> 8 + return i + if isinstance(t, int): - # FIXME: multiple byte tags - tag = t & 0x1f - constructed = True if t & 0x20 else False - cls = t >> 6 - else: - tag = t['tag'] - constructed = t['constructed'] - cls = t['class'] + # first convert to a dict representation + tag_size = count_int_bytes(t) + t, remainder = bertlv_parse_tag(t.to_bytes(tag_size)) + tag = t['tag'] + constructed = t['constructed'] + cls = t['class'] if tag <= 30: t = tag & 0x1f if constructed: -- To view, visit https://gerrit.osmocom.org/c/pysim/+/34851?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: pysim Gerrit-Branch: master Gerrit-Change-Id: If0bd9137883c4c8b01c4dfcbb53cabeee5c1ce2b Gerrit-Change-Number: 34851 Gerrit-PatchSet: 1 Gerrit-Owner: laforge <laforge@osmocom.org> Gerrit-MessageType: newchange