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Change subject: mgcp: simplify getting msgb tail in mgcp_msg_terminate_nul()
......................................................................
Patch Set 1:
(1 comment)
File include/osmocom/mgcp/mgcp_common.h:
https://gerrit.osmocom.org/c/osmo-mgw/+/35321/comment/9f8d970b_c6d1727f
PS1, Line 86:
the original code looks neoken. if we want to write to tail[0] we actually have to use something like msgb_put.
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Gerrit-Change-Number: 35321
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Change subject: filesystem: use sort path when selecting an application
......................................................................
filesystem: use sort path when selecting an application
The method build_select_path_to uses the internal file system tree model
to find the path to a given file. This works the same for applications
(ADF) as it works for normal files (EF/DF). However, an application can
be selected anytime from any location in the filesystem tree. There is
no need to select a specific path leading to that application first.
This means that if there is an ADF somewhere in the resulting
inter_path, we may clip everything before that ADF.
Related: OS#5418
Change-Id: I838a99bb47afc73b4274baecb04fff31abf7b2e2
---
M pySim/filesystem.py
1 file changed, 29 insertions(+), 1 deletion(-)
Approvals:
fixeria: Looks good to me, but someone else must approve
laforge: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/pySim/filesystem.py b/pySim/filesystem.py
index d39162c..35863a8 100644
--- a/pySim/filesystem.py
+++ b/pySim/filesystem.py
@@ -136,6 +136,16 @@
return ret
def build_select_path_to(self, target: 'CardFile') -> Optional[List['CardFile']]:
+
+ # special-case handling for applications. Applications may be selected
+ # any time from any location. If there is an ADF somewhere in the path,
+ # we may clip everything before that ADF.
+ def clip_path(inter_path):
+ for i in reversed(range(0, len(inter_path))):
+ if isinstance(inter_path[i], CardADF):
+ return inter_path[i:]
+ return inter_path
+
"""Build the relative sequence of files we need to traverse to get from us to 'target'."""
# special-case handling for selecting MF while we MF is selected
if target == target.get_mf():
@@ -152,7 +162,7 @@
for te2 in target_fqpath[i+1:]:
inter_path.append(te2)
# we found our common ancestor
- return inter_path[1:]
+ return clip_path(inter_path[1:])
return None
def get_mf(self) -> Optional['CardMF']:
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Change subject: runtime: refactor file selection methods select and select_file
......................................................................
runtime: refactor file selection methods select and select_file
The implementation of the methods select and select_file of class
RuntimeLchan is a bit complex. We access the card directly in several
places which makes it difficult to track the state changes. We should
clean this up so that we call self.rs.card.select_adf_by_aid/
self.scc.select_file from a single place only.
This means that the method select uses the method select_file. This
results in a much cleaner implementation. We also should take care
that the important states that we track (selected_file, selected_adf,
etc.) are updated by a single private method. Since the update always
must happen after a select _select_post is a good place to do this.
Related: OS#5418
Change-Id: I9ae213f3b078983f3e6d4c11db38fdbe504c84f2
---
M pySim/runtime.py
1 file changed, 72 insertions(+), 40 deletions(-)
Approvals:
fixeria: Looks good to me, but someone else must approve
Jenkins Builder: Verified
laforge: Looks good to me, approved
diff --git a/pySim/runtime.py b/pySim/runtime.py
index 1155433..f836ec8 100644
--- a/pySim/runtime.py
+++ b/pySim/runtime.py
@@ -255,6 +255,8 @@
raise ValueError(
"Cannot select unknown file by name %s, only hexadecimal 4 digit FID is allowed" % fid)
+ self._select_pre(cmd_app)
+
try:
# We access the card through the select_file method of the scc object.
# If we succeed, we know that the file exists on the card and we may
@@ -264,6 +266,7 @@
# so we do not have to update any state in that case.
(data, sw) = self.scc.select_file(fid)
except SwMatchError as swm:
+ self._select_post(cmd_app)
k = self.interpret_sw(swm.sw_actual)
if not k:
raise(swm)
@@ -282,8 +285,8 @@
desc="elementary file, manually added at runtime")
self.selected_file.add_files([f])
- self.selected_file = f
- return select_resp, data
+
+ self._select_post(cmd_app, f, data)
def _select_pre(self, cmd_app):
# unregister commands of old file
@@ -291,7 +294,17 @@
for c in self.selected_file.shell_commands:
cmd_app.unregister_command_set(c)
- def _select_post(self, cmd_app):
+ def _select_post(self, cmd_app, file:Optional[CardFile] = None, select_resp_data = None):
+ # we store some reference data (see above) about the currently selected file.
+ # This data must be updated after every select.
+ if file:
+ self.selected_file = file
+ if isinstance(file, CardADF):
+ self.selected_adf = file
+ if select_resp_data:
+ self.selected_file_fcp_hex = select_resp_data
+ self.selected_file_fcp = self.selected_file.decode_select_response(select_resp_data)
+
# register commands of new file
if cmd_app and self.selected_file.shell_commands:
for c in self.selected_file.shell_commands:
@@ -308,22 +321,31 @@
inter_path = self.selected_file.build_select_path_to(file)
if not inter_path:
raise RuntimeError('Cannot determine path from %s to %s' % (self.selected_file, file))
-
self._select_pre(cmd_app)
- for p in inter_path:
+ # be sure the variables that we pass to _select_post contain valid values.
+ selected_file = self.selected_file
+ data = self.selected_file_fcp_hex
+
+ for f in inter_path:
try:
- if isinstance(p, CardADF):
- (data, sw) = self.rs.card.select_adf_by_aid(p.aid, scc=self.scc)
- self.selected_adf = p
+ # We now directly accessing the card to perform the selection. This
+ # will change the state of the card, so we must take care to update
+ # the local state (lchan) as well. This is done in the method
+ # _select_post. It should be noted that the caller must always use
+ # the methods select_file or select. The caller must not access the
+ # card directly since this would lead into an incoherence of the
+ # card state and the state of the lchan.
+ if isinstance(f, CardADF):
+ (data, sw) = self.rs.card.select_adf_by_aid(f.aid, scc=self.scc)
else:
- (data, sw) = self.scc.select_file(p.fid)
- self.selected_file = p
+ (data, sw) = self.scc.select_file(f.fid)
+ selected_file = f
except SwMatchError as swm:
- self._select_post(cmd_app)
+ self._select_post(cmd_app, selected_file, data)
raise(swm)
- self._select_post(cmd_app)
+ self._select_post(cmd_app, f, data)
def select(self, name: str, cmd_app=None):
"""Select a file (EF, DF, ADF, MF, ...).
@@ -332,9 +354,11 @@
name : Name of file to select
cmd_app : Command Application State (for unregistering old file commands)
"""
+ # if any intermediate step fails, we must be able to go back where we were
+ prev_sel_file = self.selected_file
+
# handling of entire paths with multiple directories/elements
if '/' in name:
- prev_sel_file = self.selected_file
pathlist = name.split('/')
# treat /DF.GSM/foo like MF/DF.GSM/foo
if pathlist[0] == '':
@@ -342,42 +366,28 @@
try:
for p in pathlist:
self.select(p, cmd_app)
- return
+ return self.selected_file_fcp
except Exception as e:
- # if any intermediate step fails, go back to where we were
self.select_file(prev_sel_file, cmd_app)
raise e
+ # we are now in the directory where the target file is located
+ # so we can now refer to the get_selectables() method to get the
+ # file object and select it using select_file()
sels = self.selected_file.get_selectables()
if is_hex(name):
name = name.lower()
- self._select_pre(cmd_app)
+ try:
+ if name in sels:
+ self.select_file(sels[name], cmd_app)
+ else:
+ self.probe_file(name, cmd_app)
+ except Exception as e:
+ self.select_file(prev_sel_file, cmd_app)
+ raise e
- if name in sels:
- f = sels[name]
- try:
- if isinstance(f, CardADF):
- (data, sw) = self.rs.card.select_adf_by_aid(f.aid, scc=self.scc)
- self.selected_adf = f
- else:
- (data, sw) = self.scc.select_file(f.fid)
- self.selected_file = f
- except SwMatchError as swm:
- k = self.interpret_sw(swm.sw_actual)
- if not k:
- raise(swm)
- raise RuntimeError("%s: %s - %s" % (swm.sw_actual, k[0], k[1]))
- select_resp = f.decode_select_response(data)
- else:
- (select_resp, data) = self.probe_file(name, cmd_app)
-
- # store the raw + decoded FCP for later reference
- self.selected_file_fcp_hex = data
- self.selected_file_fcp = select_resp
-
- self._select_post(cmd_app)
- return select_resp
+ return self.selected_file_fcp
def status(self):
"""Request STATUS (current selected file FCP) from card."""
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Change subject: filesystem: fix typo
......................................................................
filesystem: fix typo
Change-Id: I721875d302ab69340d56b33102297b56c070465f
---
M pySim/filesystem.py
1 file changed, 10 insertions(+), 1 deletion(-)
Approvals:
laforge: Looks good to me, approved
Jenkins Builder: Verified
fixeria: Looks good to me, approved
diff --git a/pySim/filesystem.py b/pySim/filesystem.py
index 35863a8..0e72921 100644
--- a/pySim/filesystem.py
+++ b/pySim/filesystem.py
@@ -147,7 +147,7 @@
return inter_path
"""Build the relative sequence of files we need to traverse to get from us to 'target'."""
- # special-case handling for selecting MF while we MF is selected
+ # special-case handling for selecting MF while the MF is selected
if target == target.get_mf():
return [target]
cur_fqpath = self.fully_qualified_path_fobj()
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Change subject: filesystem: use sort path when selecting an application
......................................................................
Patch Set 1: Code-Review+2
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