class Lighthouse(object):
__metaclass__ = abc.ABCMeta
#--------------------------------------------------------------------------
# Initialization
#--------------------------------------------------------------------------
def load(self):
"""
Load the plugin, and integrate its UI into the disassembler.
"""
self._init()
self._install_ui()
# plugin loaded successfully, print the plugin banner
self.print_banner()
logger.info("Successfully loaded plugin")
def _init(self):
"""
Initialize the core components of the plugin.
"""
# the plugin's color palette
self.palette = LighthousePalette()
# the coverage engine
self.director = CoverageDirector(self.palette)
# the coverage painter
self.painter = CoveragePainter(self.director, self.palette)
# the coverage overview widget
self._ui_coverage_overview = None
# the directory to start the coverage file dialog in
self._last_directory = None
def print_banner(self):
"""
Print the plugin banner.
"""
# build the main banner title
banner_params = (PLUGIN_VERSION, AUTHORS, DATE)
banner_title = "Lighthouse v%s - (c) %s - %s" % banner_params
# print plugin banner
lmsg("")
lmsg("-" * 75)
lmsg("---[ %s" % banner_title)
lmsg("-" * 75)
lmsg("")
#--------------------------------------------------------------------------
# Termination
#--------------------------------------------------------------------------
def unload(self):
"""
Unload the plugin, and remove any UI integrations.
"""
self._uninstall_ui()
self._cleanup()
logger.info("-" * 75)
logger.info("Plugin terminated")
def _cleanup(self):
"""
Spin down any lingering core components before plugin unload.
"""
self.painter.terminate()
self.director.terminate()
#--------------------------------------------------------------------------
# UI Integration (Internal)
#--------------------------------------------------------------------------
def _install_ui(self):
"""
Initialize & integrate all plugin UI elements.
"""
self._install_load_file()
self._install_load_batch()
self._install_open_coverage_overview()
def _uninstall_ui(self):
"""
Cleanup & remove all plugin UI integrations.
"""
self._uninstall_open_coverage_overview()
self._uninstall_load_batch()
self._uninstall_load_file()
@abc.abstractmethod
def _install_load_file(self):
"""
Install the 'File->Load->Code coverage file...' menu entry.
"""
pass
@abc.abstractmethod
def _install_load_batch(self):
"""
Install the 'File->Load->Code coverage batch...' menu entry.
"""
pass
@abc.abstractmethod
def _install_open_coverage_overview(self):
"""
Install the 'View->Open subviews->Coverage Overview' menu entry.
"""
pass
@abc.abstractmethod
def _uninstall_load_file(self):
"""
Remove the 'File->Load file->Code coverage file...' menu entry.
"""
pass
@abc.abstractmethod
def _uninstall_load_batch(self):
"""
Remove the 'File->Load file->Code coverage batch...' menu entry.
"""
pass
@abc.abstractmethod
def _uninstall_open_coverage_overview(self):
"""
Remove the 'View->Open subviews->Coverage Overview' menu entry.
"""
pass
#--------------------------------------------------------------------------
# UI Actions (Public)
#--------------------------------------------------------------------------
def open_coverage_overview(self):
"""
Open the dockable 'Coverage Overview' dialog.
"""
self.palette.refresh_colors()
# the coverage overview is already open & visible, simply refresh it
if self._ui_coverage_overview and self._ui_coverage_overview.isVisible(
):
self._ui_coverage_overview.refresh()
return
# create a new coverage overview if there is not one visible
self._ui_coverage_overview = CoverageOverview(self)
self._ui_coverage_overview.show()
def interactive_load_batch(self):
"""
Perform the user-interactive loading of a coverage batch.
"""
self.palette.refresh_colors()
#
# kick off an asynchronous metadata refresh. this will run in the
# background while the user is selecting which coverage files to load
#
future = self.director.refresh_metadata(
progress_callback=metadata_progress)
#
# we will now prompt the user with an interactive file dialog so they
# can select the coverage files they would like to load from disk
#
filenames = self._select_coverage_files()
#
# load the selected coverage files from disk (if any), returning a list
# of loaded DrcovData objects (which contain coverage data)
#
drcov_list = load_coverage_files(filenames)
if not drcov_list:
self.director.metadata.abort_refresh()
return
# prompt the user to name the new coverage aggregate
default_name = "BATCH_%s" % self.director.peek_shorthand()
ok, coverage_name = prompt_string(
"Batch Name:", "Please enter a name for this coverage",
default_name)
#
# if user didn't enter a name for the batch (or hit cancel) we should
# abort the loading process...
#
if not (ok and coverage_name):
lmsg("User failed to enter a name for the loaded batch...")
self.director.metadata.abort_refresh()
return
#
# to begin mapping the loaded coverage data, we require that the
# asynchronous database metadata refresh has completed. if it is
# not done yet, we will block here until it completes.
#
# a progress dialog depicts the work remaining in the refresh
#
disassembler.show_wait_box("Building database metadata...")
await_future(future)
#
# now that the database metadata is available, we can use the director
# to normalize and condense (aggregate) all the coverage data
#
new_coverage, errors = self.director.aggregate_drcov_batch(drcov_list)
#
# finally, we can inject the aggregated coverage data into the
# director under the user specified batch name
#
disassembler.replace_wait_box("Mapping coverage...")
self.director.create_coverage(coverage_name, new_coverage.data)
# select the newly created batch coverage
disassembler.replace_wait_box("Selecting coverage...")
self.director.select_coverage(coverage_name)
# all done! pop the coverage overview to show the user their results
disassembler.hide_wait_box()
lmsg("Successfully loaded batch %s..." % coverage_name)
self.open_coverage_overview()
# finally, emit any notable issues that occurred during load
warn_errors(errors)
def interactive_load_file(self):
"""
Perform the user-interactive loading of individual coverage files.
"""
self.palette.refresh_colors()
#
# kick off an asynchronous metadata refresh. this will run in the
# background while the user is selecting which coverage files to load
#
future = self.director.refresh_metadata(
progress_callback=metadata_progress)
#
# we will now prompt the user with an interactive file dialog so they
# can select the coverage files they would like to load from disk
#
filenames = self._select_coverage_files()
#
# load the selected coverage files from disk (if any), returning a list
# of loaded DrcovData objects (which contain coverage data)
#
disassembler.show_wait_box("Loading coverage from disk...")
drcov_list = load_coverage_files(filenames)
if not drcov_list:
disassembler.hide_wait_box()
self.director.metadata.abort_refresh()
return
#
# to begin mapping the loaded coverage data, we require that the
# asynchronous database metadata refresh has completed. if it is
# not done yet, we will block here until it completes.
#
# a progress dialog depicts the work remaining in the refresh
#
disassembler.replace_wait_box("Building database metadata...")
await_future(future)
# insert the loaded drcov data objects into the director
created_coverage, errors = self.director.create_coverage_from_drcov_list(
drcov_list)
#
# if the director failed to map any coverage, the user probably
# provided bad files. emit any warnings and bail...
#
if not created_coverage:
lmsg("No coverage files could be loaded...")
disassembler.hide_wait_box()
warn_errors(errors)
return
#
# activate the first of the newly loaded coverage file(s). this is the
# one that will be visible in the coverage overview once opened
#
disassembler.replace_wait_box("Selecting coverage...")
self.director.select_coverage(created_coverage[0])
# all done! pop the coverage overview to show the user their results
disassembler.hide_wait_box()
lmsg("Successfully loaded %u coverage file(s)..." %
len(created_coverage))
self.open_coverage_overview()
# finally, emit any notable issues that occurred during load
warn_errors(errors)
#--------------------------------------------------------------------------
# Internal
#--------------------------------------------------------------------------
def _select_coverage_files(self):
"""
Prompt a file selection dialog, returning file selections.
NOTE: This saves & reuses the last known directory for subsequent uses.
"""
if not self._last_directory:
self._last_directory = disassembler.get_database_directory()
# create & configure a Qt File Dialog for immediate use
file_dialog = QtWidgets.QFileDialog(None, 'Open code coverage file',
self._last_directory,
'All Files (*.*)')
file_dialog.setFileMode(QtWidgets.QFileDialog.ExistingFiles)
# prompt the user with the file dialog, and await filename(s)
filenames, _ = file_dialog.getOpenFileNames()
#
# remember the last directory we were in (parsed from a selected file)
# for the next time the user comes to load coverage files
#
if filenames:
self._last_directory = os.path.dirname(filenames[0]) + os.sep
# log the captured (selected) filenames from the dialog
logger.debug("Captured filenames from file dialog:")
for name in filenames:
logger.debug(" - %s" % name)
# return the captured filenames
return filenames
class Lighthouse(idaapi.plugin_t):
"""
The Lighthouse IDA Plugin.
"""
flags = idaapi.PLUGIN_PROC | idaapi.PLUGIN_MOD | idaapi.PLUGIN_HIDE
comment = "Code Coverage Explorer"
help = ""
wanted_name = "Lighthouse"
wanted_hotkey = ""
#--------------------------------------------------------------------------
# IDA Plugin Overloads
#--------------------------------------------------------------------------
def init(self):
"""
This is called by IDA when it is loading the plugin.
"""
# attempt plugin initialization
try:
self._install_plugin()
# failed to initialize or integrate the plugin, log and skip loading
except Exception as e:
logger.exception("Failed to initialize")
return idaapi.PLUGIN_SKIP
# plugin loaded successfully, print the Lighthouse banner
self.print_banner()
logger.info("Successfully initialized")
# tell IDA to keep the plugin loaded (everything is okay)
return idaapi.PLUGIN_KEEP
def run(self, arg):
"""
This is called by IDA when this file is loaded as a script.
"""
idaapi.warning("The Lighthouse plugin cannot be run as a script.")
def term(self):
"""
This is called by IDA when it is unloading the plugin.
"""
# attempt to cleanup and uninstall our plugin instance
try:
self._uninstall_plugin()
# failed to cleanly remove the plugin, log failure
except Exception as e:
logger.exception("Failed to cleanly unload the plugin")
logger.info("-"*75)
logger.info("Plugin terminated")
#--------------------------------------------------------------------------
# Initialization
#--------------------------------------------------------------------------
def _install_plugin(self):
"""
Initialize & integrate the plugin into IDA.
"""
self._init()
self._install_ui()
def _init(self):
"""
Initialize plugin members.
"""
# plugin color palette
self.palette = LighthousePalette()
# the coverage engine
self.director = CoverageDirector(self.palette)
# the coverage painter
self.painter = CoveragePainter(self.director, self.palette)
# the coverage overview widget
self._ui_coverage_overview = None
# menu entry icons
self._icon_id_file = idaapi.BADADDR
self._icon_id_batch = idaapi.BADADDR
self._icon_id_overview = idaapi.BADADDR
# the directory to start the coverage file dialog in
self._last_directory = idautils.GetIdbDir()
def _install_ui(self):
"""
Initialize & integrate all UI elements.
"""
self._install_load_file()
self._install_load_batch()
self._install_open_coverage_overview()
def print_banner(self):
"""
Print the Lighthouse plugin banner.
"""
# build the main banner title
banner_params = (PLUGIN_VERSION, AUTHORS, DATE)
banner_title = "Lighthouse v%s - (c) %s - %s" % banner_params
# print plugin banner
lmsg("")
lmsg("-"*75)
lmsg("---[ %s" % banner_title)
lmsg("-"*75)
lmsg("")
#--------------------------------------------------------------------------
# Termination
#--------------------------------------------------------------------------
def _uninstall_plugin(self):
"""
Cleanup & uninstall the plugin from IDA.
"""
self._uninstall_ui()
self._cleanup()
def _uninstall_ui(self):
"""
Cleanup & uninstall the plugin UI from IDA.
"""
self._uninstall_open_coverage_overview()
self._uninstall_load_batch()
self._uninstall_load_file()
def _cleanup(self):
"""
IDB closing event, last chance to spin down threaded workers.
"""
self.painter.terminate()
self.director.terminate()
#--------------------------------------------------------------------------
# IDA Actions
#--------------------------------------------------------------------------
ACTION_LOAD_FILE = "lighthouse:load_file"
ACTION_LOAD_BATCH = "lighthouse:load_batch"
ACTION_COVERAGE_OVERVIEW = "lighthouse:coverage_overview"
def _install_load_file(self):
"""
Install the 'File->Load->Code coverage file...' menu entry.
"""
# create a custom IDA icon
icon_path = plugin_resource(os.path.join("icons", "load.png"))
icon_data = str(open(icon_path, "rb").read())
self._icon_id_file = idaapi.load_custom_icon(data=icon_data)
# describe a custom IDA UI action
action_desc = idaapi.action_desc_t(
self.ACTION_LOAD_FILE, # The action name.
"~C~ode coverage file...", # The action text.
IDACtxEntry(self.interactive_load_file), # The action handler.
None, # Optional: action shortcut
"Load individual code coverage file(s)", # Optional: tooltip
self._icon_id_file # Optional: the action icon
)
# register the action with IDA
result = idaapi.register_action(action_desc)
if not result:
RuntimeError("Failed to register load_file action with IDA")
# attach the action to the File-> dropdown menu
result = idaapi.attach_action_to_menu(
"File/Load file/", # Relative path of where to add the action
self.ACTION_LOAD_FILE, # The action ID (see above)
idaapi.SETMENU_APP # We want to append the action after ^
)
if not result:
RuntimeError("Failed action attach load_file")
logger.info("Installed the 'Code coverage file' menu entry")
def _install_load_batch(self):
"""
Install the 'File->Load->Code coverage batch...' menu entry.
"""
# create a custom IDA icon
icon_path = plugin_resource(os.path.join("icons", "batch.png"))
icon_data = str(open(icon_path, "rb").read())
self._icon_id_batch = idaapi.load_custom_icon(data=icon_data)
# describe a custom IDA UI action
action_desc = idaapi.action_desc_t(
self.ACTION_LOAD_BATCH, # The action name.
"~C~ode coverage batch...", # The action text.
IDACtxEntry(self.interactive_load_batch), # The action handler.
None, # Optional: action shortcut
"Load and aggregate code coverage files", # Optional: tooltip
self._icon_id_batch # Optional: the action icon
)
# register the action with IDA
result = idaapi.register_action(action_desc)
if not result:
RuntimeError("Failed to register load_batch action with IDA")
# attach the action to the File-> dropdown menu
result = idaapi.attach_action_to_menu(
"File/Load file/", # Relative path of where to add the action
self.ACTION_LOAD_BATCH, # The action ID (see above)
idaapi.SETMENU_APP # We want to append the action after ^
)
if not result:
RuntimeError("Failed action attach load_batch")
logger.info("Installed the 'Code coverage batch' menu entry")
def _install_open_coverage_overview(self):
"""
Install the 'View->Open subviews->Coverage Overview' menu entry.
"""
# create a custom IDA icon
icon_path = plugin_resource(os.path.join("icons", "overview.png"))
icon_data = str(open(icon_path, "rb").read())
self._icon_id_overview = idaapi.load_custom_icon(data=icon_data)
# describe a custom IDA UI action
action_desc = idaapi.action_desc_t(
self.ACTION_COVERAGE_OVERVIEW, # The action name.
"~C~overage Overview", # The action text.
IDACtxEntry(self.open_coverage_overview), # The action handler.
None, # Optional: action shortcut
"Open database code coverage overview", # Optional: tooltip
self._icon_id_overview # Optional: the action icon
)
# register the action with IDA
result = idaapi.register_action(action_desc)
if not result:
RuntimeError("Failed to register open coverage overview action with IDA")
# attach the action to the View-> dropdown menu
result = idaapi.attach_action_to_menu(
"View/Open subviews/Hex dump", # Relative path of where to add the action
self.ACTION_COVERAGE_OVERVIEW, # The action ID (see above)
idaapi.SETMENU_INS # We want to insert the action before ^
)
if not result:
RuntimeError("Failed action attach to 'View/Open subviews' dropdown")
logger.info("Installed the 'Coverage Overview' menu entry")
def _uninstall_load_file(self):
"""
Remove the 'File->Load file->Code coverage file...' menu entry.
"""
# remove the entry from the File-> menu
result = idaapi.detach_action_from_menu(
"File/Load file/",
self.ACTION_LOAD_FILE
)
if not result:
return False
# unregister the action
result = idaapi.unregister_action(self.ACTION_LOAD_FILE)
if not result:
return False
# delete the entry's icon
idaapi.free_custom_icon(self._icon_id_file)
self._icon_id_file = idaapi.BADADDR
logger.info("Uninstalled the 'Code coverage file' menu entry")
def _uninstall_load_batch(self):
"""
Remove the 'File->Load file->Code coverage batch...' menu entry.
"""
# remove the entry from the File-> menu
result = idaapi.detach_action_from_menu(
"File/Load file/",
self.ACTION_LOAD_BATCH
)
if not result:
return False
# unregister the action
result = idaapi.unregister_action(self.ACTION_LOAD_BATCH)
if not result:
return False
# delete the entry's icon
idaapi.free_custom_icon(self._icon_id_batch)
self._icon_id_batch = idaapi.BADADDR
logger.info("Uninstalled the 'Code coverage batch' menu entry")
def _uninstall_open_coverage_overview(self):
"""
Remove the 'View->Open subviews->Coverage Overview' menu entry.
"""
# remove the entry from the View-> menu
result = idaapi.detach_action_from_menu(
"View/Open subviews/Hex dump",
self.ACTION_COVERAGE_OVERVIEW
)
if not result:
return False
# unregister the action
result = idaapi.unregister_action(self.ACTION_COVERAGE_OVERVIEW)
if not result:
return False
# delete the entry's icon
idaapi.free_custom_icon(self._icon_id_overview)
self._icon_id_overview = idaapi.BADADDR
logger.info("Uninstalled the 'Coverage Overview' menu entry")
#--------------------------------------------------------------------------
# UI - Actions
#--------------------------------------------------------------------------
def open_coverage_overview(self):
"""
Open the 'Coverage Overview' dialog.
"""
self.palette.refresh_colors()
# the coverage overview is already open & visible, simply refresh it
if self._ui_coverage_overview and self._ui_coverage_overview.isVisible():
self._ui_coverage_overview.refresh()
return
# create a new coverage overview if there is not one visible
self._ui_coverage_overview = CoverageOverview(self.director)
self._ui_coverage_overview.show()
def interactive_load_batch(self):
"""
Interactive loading & aggregation of coverage files.
"""
self.palette.refresh_colors()
#
# kick off an asynchronous metadata refresh. this collects underlying
# database metadata while the user will be busy selecting coverage files.
#
future = self.director.refresh_metadata(progress_callback=metadata_progress)
#
# we will now prompt the user with an interactive file dialog so they
# can select the coverage files they would like to load from disk.
#
loaded_files = self._select_and_load_coverage_files()
# if no valid coveragee files were selected (and loaded), bail
if not loaded_files:
self.director.metadata.abort_refresh()
return
# prompt the user to name the new coverage aggregate
default_name = "BATCH_%s" % self.director.peek_shorthand()
ok, coverage_name = prompt_string(
"Batch Name:",
"Please enter a name for this coverage",
default_name
)
# if user didn't enter a name for the batch, or hit cancel, we abort
if not (ok and coverage_name):
lmsg("Aborting batch load...")
return
#
# to continue any further, we need the database metadata. hopefully
# it has finished with its asynchronous collection, otherwise we will
# block until it completes. the user will be shown a progress dialog.
#
idaapi.show_wait_box("Building database metadata...")
await_future(future)
# aggregate all the selected files into one new coverage set
new_coverage = self._aggregate_batch(loaded_files)
# inject the the aggregated coverage set
idaapi.replace_wait_box("Mapping coverage...")
self.director.create_coverage(coverage_name, new_coverage.data)
# select the newly created batch coverage
idaapi.replace_wait_box("Selecting coverage...")
self.director.select_coverage(coverage_name)
# all done, hide the IDA wait box
idaapi.hide_wait_box()
lmsg("Successfully loaded batch %s..." % coverage_name)
# show the coverage overview
self.open_coverage_overview()
def _aggregate_batch(self, loaded_files):
"""
Aggregate the given loaded_files data into a single coverage object.
"""
idaapi.replace_wait_box("Aggregating coverage batch...")
# create a new coverage set to manually aggregate data into
coverage = DatabaseCoverage({}, self.palette)
#
# loop through the coverage data we have loaded from disk, and begin
# the normalization process to translate / filter / flatten it for
# insertion into the director (as a list of instruction addresses)
#
for i, data in enumerate(loaded_files, 1):
# keep the user informed about our progress while loading coverage
idaapi.replace_wait_box(
"Aggregating batch data %u/%u" % (i, len(loaded_files))
)
# normalize coverage data to the open database
try:
addresses = self._normalize_coverage(data, self.director.metadata)
# normalization failed, print & log it
except Exception as e:
lmsg("Failed to map coverage %s" % data.filepath)
lmsg("- %s" % e)
logger.exception("Error details:")
continue
# aggregate the addresses into the output coverage object
coverage.add_addresses(addresses, False)
# return the created coverage name
return coverage
def interactive_load_file(self):
"""
Interactive loading of individual coverage files.
"""
self.palette.refresh_colors()
created_coverage = []
#
# kick off an asynchronous metadata refresh. this collects underlying
# database metadata while the user will be busy selecting coverage files.
#
future = self.director.refresh_metadata(progress_callback=metadata_progress)
#
# we will now prompt the user with an interactive file dialog so they
# can select the coverage files they would like to load from disk.
#
loaded_files = self._select_and_load_coverage_files()
# if no valid coveragee files were selected (and loaded), bail
if not loaded_files:
self.director.metadata.abort_refresh()
return
#
# to continue any further, we need the database metadata. hopefully
# it has finished with its asynchronous collection, otherwise we will
# block until it completes. the user will be shown a progress dialog.
#
idaapi.show_wait_box("Building database metadata...")
await_future(future)
#
# stop the director's aggregate from updating. this is in the interest
# of better performance when loading more than one new coverage set
# into the director.
#
self.director.suspend_aggregation()
#
# loop through the coverage data we have loaded from disk, and begin
# the normalization process to translate / filter / flatten its blocks
# into a generic format the director can understand (a list of addresses)
#
for i, data in enumerate(loaded_files, 1):
# keep the user informed about our progress while loading coverage
idaapi.replace_wait_box(
"Normalizing and mapping coverage %u/%u" % (i, len(loaded_files))
)
# normalize coverage data to the open database
try:
addresses = self._normalize_coverage(data, self.director.metadata)
except Exception as e:
lmsg("Failed to map coverage %s" % data.filepath)
lmsg("- %s" % e)
logger.exception("Error details:")
continue
#
# ask the director to create and track a new coverage set from
# the normalized coverage data we provide
#
coverage_name = os.path.basename(data.filepath)
self.director.create_coverage(coverage_name, addresses)
# save the coverage name to the list of succesful loads
created_coverage.append(coverage_name)
#
# resume the director's aggregation capabilities, triggering an update
# to recompute the aggregate with the newly loaded coverage
#
idaapi.replace_wait_box("Recomputing coverage aggregate...")
self.director.resume_aggregation()
# if nothing was mapped, then there's nothing else to do
if not created_coverage:
lmsg("No coverage files could be mapped...")
idaapi.hide_wait_box()
return
#
# select one (the first) of the newly loaded coverage file(s)
#
idaapi.replace_wait_box("Selecting coverage...")
self.director.select_coverage(created_coverage[0])
# all done, hide the IDA wait box
idaapi.hide_wait_box()
lmsg("Successfully loaded %u coverage file(s)..." % len(created_coverage))
# show the coverage overview
self.open_coverage_overview()
def _select_and_load_coverage_files(self):
"""
Interactive coverage file selection.
"""
#
# prompt the user with a QtFileDialog so that they can select any
# number of coverage files to load at once.
#
# if no files are selected, we abort the coverage loading process.
#
filenames = self._select_coverage_files()
if not filenames:
return None
# load the selected coverage files from disk and return them
return self._load_coverage_files(filenames)
def _select_coverage_files(self):
"""
Open the 'Load Code Coverage' dialog and capture file selections.
"""
# create & configure a Qt File Dialog for immediate use
file_dialog = QtWidgets.QFileDialog(
None,
'Open code coverage file',
self._last_directory,
'All Files (*.*)'
)
file_dialog.setFileMode(QtWidgets.QFileDialog.ExistingFiles)
# prompt the user with the file dialog, and await filename(s)
filenames, _ = file_dialog.getOpenFileNames()
#
# remember the last directory we were in (parsed from a selected file)
# for the next time the user comes to load coverage files
#
if filenames:
self._last_directory = os.path.dirname(filenames[0]) + os.sep
# log the captured (selected) filenames from the dialog
logger.debug("Captured filenames from file dialog:")
logger.debug('\n - ' + '\n - '.join(filenames))
# return the captured filenames
return filenames
#--------------------------------------------------------------------------
# Misc
#--------------------------------------------------------------------------
#
# NOTE / FUTURE / TODO
#
# In my vision for Lighthouse, I always imagined that it would be
# able to dynamically detect and load coverage data from a variety of
# different coverage sources and formats (DR, PIN, an inst trace, etc)
#
# The dream was that Lighthouse would have a folder of loaders to parse
# and normalize their data to the database / loaded executable so that
# they can be injected into the director for exploration.
#
# I would still like to do this, but really haven't heard many people
# asking for additional coverage source support yet... so this feature
# keeps getting pushed back.
#
# ...
#
# In the mean time, we have a few random functions that are hardcoded
# here to load DrCov files and normalize them to the current databasae.
#
def _load_coverage_files(self, filenames):
"""
Load multiple code coverage files from disk.
"""
loaded_coverage = []
#
# loop through each of the given filenames and attempt to load/parse
# their coverage data from disk
#
for filename in filenames:
# attempt to load/parse a single coverage data file from disk
try:
coverage_data = self._load_coverage_file(filename)
# catch all for parse errors / bad input / malformed files
except Exception as e:
lmsg("Failed to load coverage %s" % filename)
logger.exception("Error details:")
continue
# save the loaded coverage data to the output list
loaded_coverage.append(coverage_data)
# return all the succesfully loaded coverage files
return loaded_coverage
def _load_coverage_file(self, filename):
"""
Load a single code coverage file from disk.
"""
return DrcovData(filename)
def _normalize_coverage(self, coverage_data, metadata):
"""
Normalize loaded DrCov data to the database metadata.
"""
# extract the coverage relevant to this IDB (well, the root binary)
root_filename = idaapi.get_root_filename()
coverage_blocks = coverage_data.get_blocks_by_module(root_filename)
# rebase the basic blocks
base = idaapi.get_imagebase()
rebased_blocks = rebase_blocks(base, coverage_blocks)
# coalesce the blocks into larger contiguous blobs
condensed_blocks = coalesce_blocks(rebased_blocks)
# flatten the blobs into individual instructions or addresses
return metadata.flatten_blocks(condensed_blocks)