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Add osmo_apdu_segment_in2() to ensure correct parsing of GP GET DATA

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osmo_apdu_segment_in() doesn't have the context of the previous APDU,
for nearly all calls this is fine, except for GP GET DATA, which can be
a case 2 or case 4 APDU.
GP GET DATA defines the Le field as 0x00 which is used by osmo_apdu_segment_in
to detect if it is a case 2 or case 4.
However a card can respond with the SW 6cXX, which means the previous
command must be resend with a Le field XX, which got misinterpreted by
the osmo_apdu_segment_in() as a case 4 resulting in a timeout waiting for
more data.

Modem <-> Card
81cadf2000 ->
 <- 6c0b
81cadf200b ->
 -- Simtrace waits for more data because it wrongly decodes it as APDU case 4
    instead of case 2.

Related: SYS#8147
Change-Id: Ie238662e7e6a10dd4283ede0c8d8d73bc375c247
This commit is contained in:
Alexander Couzens authored and lynxis lazus committed 2026-08-18 15:31:43 +00:00
1 parent 9f85d1e15b
commit 63a61bfdaf
10 files changed
+197 -1
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host/tests/Makefile.am
+40
View File
@@ -0,0 +1,40 @@
SUBDIRS = apdu_dispatch
# The `:;' works around a Bash 3.2 bug when the output is not writeable.
$(srcdir)/package.m4: $(top_srcdir)/configure.ac
:;{ \
echo '# Signature of the current package.' && \
echo 'm4_define([AT_PACKAGE_NAME],' && \
echo ' [$(PACKAGE_NAME)])' && \
echo 'm4_define([AT_PACKAGE_TARNAME],' && \
echo ' [$(PACKAGE_TARNAME)])' && \
echo 'm4_define([AT_PACKAGE_VERSION],' && \
echo ' [$(PACKAGE_VERSION)])' && \
echo 'm4_define([AT_PACKAGE_STRING],' && \
echo ' [$(PACKAGE_STRING)])' && \
echo 'm4_define([AT_PACKAGE_BUGREPORT],' && \
echo ' [$(PACKAGE_BUGREPORT)])'; \
echo 'm4_define([AT_PACKAGE_URL],' && \
echo ' [$(PACKAGE_URL)])'; \
} >'$(srcdir)/package.m4'
EXTRA_DIST = testsuite.at $(srcdir)/package.m4 $(TESTSUITE)
TESTSUITE = $(srcdir)/testsuite
DISTCLEANFILES = atconfig
check-local: atconfig $(TESTSUITE)
$(SHELL) '$(TESTSUITE)' $(TESTSUITEFLAGS)
installcheck-local: atconfig $(TESTSUITE)
$(SHELL) '$(TESTSUITE)' AUTOTEST_PATH='$(bindir)' \
$(TESTSUITEFLAGS)
clean-local:
test ! -f '$(TESTSUITE)' || \
$(SHELL) '$(TESTSUITE)' --clean
AUTOM4TE = $(SHELL) $(top_srcdir)/missing --run autom4te
AUTOTEST = $(AUTOM4TE) --language=autotest
$(TESTSUITE): $(srcdir)/testsuite.at $(srcdir)/package.m4
$(AUTOTEST) -I '$(srcdir)' -o $@.tmp $@.at
mv $@.tmp $@