Is there a way to get all the PcodeOps within a given function for a given local variable? So far I can find the HighSymbol given the function and the name, but I want to then grab all the uses of that variable?
DecompileResults res = decomplib.decompileFunction(f, 200, monitor);
if (res.decompileCompleted())
{
HighFunction highFunc = res.getHighFunction();
LocalSymbolMap localMap = highFunc.getLocalSymbolMap();
Iterator<HighSymbol> localSymbols = localMap.getSymbols();
HighSymbol localSymbol = null;
while (localSymbols.hasNext())
{
HighSymbol current = localSymbols.next();
if (current.getName().equals(theName)) {
localSymbol = current;
break;
}
}
}
If you are starting from a HighSymbol, you first get the HighVariable by accessing highSymbol.highVariable.
You can then get get all PCodeOPs using the variable by accessing the instances of a HighVariable which are of type VarnodeAST , and then getting their def (definition) and descendants
hvar = currentLocation.token.highVariable # get the high variable that is currently selected highlighted in the decompiler window
for varnode in hvar.instances:
print(varnode.def) # the PCodeOp that defines this instance of the variable
for dsc in varnode.descendants:
print(dsc) # every PCodeOp that uses this variable
Related
I'm trying to create a Terraform module that will build my JS lambdas, zip them and deploy them. This however proves to be problematic
resource "null_resource" "build_lambda" {
count = length(var.lambdas)
provisioner "local-exec" {
command = "mkdir tmp"
working_dir = path.root
}
provisioner "local-exec" {
command = var.lambdas[count.index].code.build_command
working_dir = var.lambdas[count.index].code.working_dir
}
}
data "archive_file" "lambda_zip" {
count = length(var.lambdas)
type = "zip"
source_dir = var.lambdas[count.index].code.working_dir
output_path = "${path.root}/tmp/${count.index}.zip"
depends_on = [
null_resource.build_lambda
]
}
/*******************************************************
* Lambda definition
*******************************************************/
resource "aws_lambda_function" "lambda" {
count = length(var.lambdas)
filename = data.archive_file.lambda_zip[count.index].output_path
source_code_hash = filebase64sha256(data.archive_file.lambda_zip[count.index].output_path)
function_name = "${var.application_name}-${var.lambdas[count.index].name}"
description = var.lambdas[count.index].description
handler = var.lambdas[count.index].handler
runtime = var.lambdas[count.index].runtime
role = aws_iam_role.iam_for_lambda.arn
memory_size = var.lambdas[count.index].memory_size
depends_on = [aws_iam_role_policy_attachment.lambda_logs, aws_cloudwatch_log_group.log_group, data.archive_file.lambda_zip]
}
The property source_code_hash = filebase64sha256(data.archive_file.lambda_zip[count.index].output_path) , although technically not obligatory, is necessary, or the existing lambda will never get overriden as Terraform will think that it is still the same version of lambda and will skip the deployment altogether. Unfortunately it looks like the method filebase64sha256 is evaluated before the creation of any resource. This means that there is no zip for the hash calculation and so I get the error
Error: Error in function call
on modules\api-gateway-lambda\main.tf line 35, in resource "aws_lambda_function" "lambda":
35: source_code_hash = filebase64sha256(data.archive_file.lambda_zip[count.index].output_path)
|----------------
| count.index is 0
| data.archive_file.lambda_zip is tuple with 1 element
Call to function "filebase64sha256" failed: no file exists at tmp\0.zip.
If i manually place a zip in the right location, I can see that the whole thing starts working and the zip eventually gets overriden by a new one, but the hash in this case must come from the previous zip.
What is the right way to execute the whole thing in the right order?
The archive_file data source has its own output_base64sha256 attribute which can give you that same result without asking Terraform to read a file that doesn't exist yet:
source_code_hash = data.archive_file.lambda_zip[count.index].output_base64sha256
The data source will populate this at the same time it creates the file, and because your lambda function depends on the data source it will therefore always be available before the lambda function configuration is evaluated.
I have the following SysTreeView32 element from which I would like to retrieve the "Description" field:
In my pywinauto script (based on win32 backend), I can retrieve pretty easily the TreeViewWrapper element by looking for the class type and eventually looking at the items text, but some information that I need is only available in the Description field of this element.
I was not able to find a way to retrieve this information.
I tried in UIA mode as well:
But in this case, it does not even appear in the information.
So I tried using the TreeItemWrapper element with the UIA backend in pywinauto, but I could not find the appropriate description not even in the UIAElementInfo. Although something looked pretty similar in the following line:
impl = uia_defs.get_elem_interface(elem, "LegacyIAccessible").
When I call the legacy_properties of the uia_controls.TreeItemWrapper, I get:
{'ChildId': 0,
'DefaultAction': '',
'Description': '',
'Help': '',
'KeyboardShortcut': '',
'Name': 'Execute multiple tasks(MultiTask_ImportSysD)',
'Role': 36,
'State': 3145730,
'Value': ''}
And in there, the Description is empty.
I'm guessing that property comes from IAccessible::get_accDescription.
MSDN says that property is deprecated but if you still want to use it, call AccessibleObjectFromWindow to get a IAccessible for a window.
Finally, I could not find this possibility through the pywinauto exposed API.
Although pywniauto does expose the Description property through the legacy_properties of the uia_controls.TreeItemWrapper instance, but it returns an empty string. This correlates with the note in teh Windows SDK documentation that states:
Note The Description property is often used incorrectly and is not supported by Microsoft UI Automation. Microsoft Active Accessibility server developers should not use this property. If more information is needed for accessibility and automation scenarios, use the properties supported by UI Automation elements and control patterns.
In the end, I finally developed a small piece of code to search for the element that I need the description of and I could retrieve the Description from there. Here is the code:
# for OleAcc access
import ctypes
import comtypes, comtypes.automation, comtypes.client
comtypes.client.GetModule('oleacc.dll')
def accDescription(iaccessible, cid):
objChildId = comtypes.automation.VARIANT()
objChildId.vt = comtypes.automation.VT_I4
objChildId.value = cid
objDescription = comtypes.automation.BSTR()
iaccessible._IAccessible__com__get_accDescription(objChildId, ctypes.byref(objDescription))
return objDescription.value
def accRole(iaccessible, cid):
objChildId = comtypes.automation.VARIANT()
objChildId.vt = comtypes.automation.VT_I4
objChildId.value = cid
objRole = comtypes.automation.VARIANT()
objRole.vt = comtypes.automation.VT_BSTR
iaccessible._IAccessible__com__get_accRole(objChildId, objRole)
return AccRoleNameMap[objRole.value]
def accState(iaccessible, cid):
'''Get Element State'''
objChildId = comtypes.automation.VARIANT()
objChildId.vt = comtypes.automation.VT_I4
objChildId.value = cid
objState = comtypes.automation.VARIANT()
iaccessible._IAccessible__com__get_accState(objChildId, ctypes.byref(objState))
return objState.value
def accName(iaccessible, cid):
'''Get Element Name'''
objChildId = comtypes.automation.VARIANT()
objChildId.vt = comtypes.automation.VT_I4
objChildId.value = cid
objName = comtypes.automation.BSTR()
iaccessible._IAccessible__com__get_accName(objChildId, ctypes.byref(objName))
return objName.value
def accDescendants(iaccessible):
"""Iterate all desencendants of an object iaccessible, including the current one.
Arguments:
iaccessible -- the IAccessible element to start from
Yields:
(IAcessible instance, Child id)
"""
yield (iaccessible, 0)
objAccChildArray = (comtypes.automation.VARIANT * iaccessible.accChildCount)()
objAccChildCount = ctypes.c_long()
ctypes.oledll.oleacc.AccessibleChildren(iaccessible, 0, iaccessible.accChildCount, objAccChildArray, ctypes.byref(objAccChildCount))
for i in range(objAccChildCount.value):
objAccChild = objAccChildArray[i]
if objAccChild.vt == comtypes.automation.VT_DISPATCH:
# query the sub element accessible interface
newiaccessible = objAccChild.value.QueryInterface(comtypes.gen.Accessibility.IAccessible)
# then loop over its descendants
for (__i, __c) in accDescendants(newiaccessible):
yield (__i, __c)
else: #if objAccChild.vt == comtypes.automation.VT_I4:
yield (iaccessible, objAccChild.value)
def findObjIAccessible(handle, text):
"""Find the IAccessible based on the name, starting from a specific window handle
Arguments:
handle -- the window handle from which to search for the element
text -- text that should be contained in the name of the IAccessible instance
Return:
(None, 0) if not found
(IAccessible instance, child id) of the first element whose name contains the text
"""
iacc = ctypes.POINTER(comtypes.gen.Accessibility.IAccessible)()
ctypes.oledll.oleacc.AccessibleObjectFromWindow(handle, 0, ctypes.byref(comtypes.gen.Accessibility.IAccessible._iid_), ctypes.byref(iacc))
for (ia, ch) in accDescendants(iacc):
n = accName(ia, ch)
if n != None and text in n:
return (ia, ch)
else:
return (None, 0)
Our team is just getting started with icinga2. We have an existing homegrown tool that checks a lot of different things depending on an argument so we have a series of CheckCommand objects that vary by only one argument. These checks need to be applied to multiple database instances across multiple hosts. Creating separate CheckCommands is working fine, like this:
object Host "some.oracle.host" {
import "oracle-host"
address = "172.1.1.1"
vars.db_instances = {
"EnvName" = {
"username" = "username"
"password" = "EQo1OF95G8Gs"
"dbname" = "FOO"
"connstr" = "jdbc:oracle:thin:#(FOO)"
}
}
apply Service for (env => instance in host.vars.db_instances) {
import "oracle-db-svc"
check_command = "check_oracle_foocheck"
display_name = env + "-foocheck"
vars.svc_dbname = instance["dbname"]
}
apply Service for (env => instance in host.vars.db_instances) {
import "oracle-db-svc"
check_command = "check_oracle_barcheck"
display_name = env + "-barcheck"
vars.svc_dbname = instance["dbname"]
}
Here we are creating new "check_oracle_foocheck" and "check_oracle_barcheck" services for each instance of each host that has a db_instances variable. It works well but the problem is, we have a couple dozen of those checks to implement. I'm looking for something simpler, something like:
const OracleChecks = ["foocheck", "barcheck"]
apply Service for (check in OracleChecks) {
import "oracle-db-svc"
for(env => instance in host.vars.db_instances){
check_command = "$check$"
display_name = env + "-$check$"
}
}
I assume this wouldn't work because the apply for rule isn't actually returning and maybe you can't iterate on hosts within an apply for. Here I'm just trying to convey the objective.
What I'm after is an approach to make sort of a matrix assignment of a set of services to sets of instances which live on multiple hosts. Any tips?
I have created a JMeter functional test that essentially:
creates a user;
logs in with the user;
deletes the user.
Now, I need to be able to thread this, and dynamically generate a username with a default prefix and a numerically incremented suffix (ie TestUser_1, TestUser_2, ... etc).
I used the counter, and things were working fine until I really punched up the number of threads/loops. When I did this, I was getting a conflict with the counter. Some threads were trying to read the counter, but the counter had already been incremented by another thread. This resulted in trying to delete a thread that was just created, then trying to log in with a thread that was just deleted.
The project is set up like this:
Test Plan
Thread group
Counter
User Defined Variables
Samplers
I was hoping to solve this problem by using the counter to append a number to the user defined variables upon thread execution, but the counter cannot be accessed in the user defined variables.
Any ideas on how I can solve this problem?
Thank you in advance.
I've used the following scheme successfully with any amount of test users:
1. Generate using beanshell-script (in BeanShell Sampler e.g.) csv-file with test-user details, for example:
testUserName001,testPwd001
testUserName002,testPwd002
. . .
testUserName00N,testPwd00N
with the amount of entries you need for the test-run.
This is done once per "N users test-run", in separate Thread Group, in setUp Thread Group or maybe even in separate jmx-script... makes no difference.
You can please find working beanshell-code below.
2. Create your test users IN TEST APPLICATION using previously created users-list.
If you don't need create in application you may skip this.
Thread Group
Number of Threads = 1
Loop Count = 1
. . .
While Controller
Condition = ${__javaScript("${newUserName}"!="",)} // this will repeat until EOF
CSV Data Set Config
Filename = ${__property(user.dir)}${__BeanShell(File.separator,)}${__P(users-list,)} // path to generated users-list
Variable Names = newUserName,newUserPwd // these are test-users details read from file into pointed variables
Delimiter = '
Recycle on EOF? = False
Stop thread on EOF? = True
Sharing Mode = Current thread group
[CREATE TEST USERS LOGIC HERE] // here are actions to create separate user in application
. . .
3. Perform multi-user logic.
Schema like the given above one but Thread Group executed not for 1 but for N threads.
Thread Group
Number of Threads = ${__P(usersCount,)} // set number of users you need to test
Ramp-Up Period = ${__P(rampUpPeriod,)}
Loop Count = X
. . .
While Controller
Condition = ${__javaScript("${newUserName}"!="",)} // this will repeat until EOF
CSV Data Set Config
Filename = ${__property(user.dir)}${__BeanShell(File.separator,)}${__P(users-list,)} // path to generated users-list
Variable Names = newUserName,newUserPwd // these are test-users details read from file into pointed variables
Delimiter = '
Recycle on EOF? = False
Stop thread on EOF? = True
Sharing Mode = Current thread group
[TEST LOGIC HERE] // here are test actions
. . .
The key idea is in using Thread Group + While Controller + CSV Data Set Config combination:
3.1. CSV Data Set Config reads details for each the test users from generated file:
. . . a. only once - because of "Stop thread on EOF? = True";
. . . b. doesn't block file for further access (in another thread groups, e.g., if there are any) - because of "Sharing Mode = Current thread group";
. . . c. pointed variables - "Variable Names = newUserName,newUserPwd" - you will use in further test-actions;
3.2. While Controller forces CSV Data Set Config to read all the entries from generated file - because of defined condition (until the EOF).
3.3. Thread Group will start all the threads with defined ramp-up - or simultaneously if ramp-up = 0.
You can take here template script for described schema: multiuser.jmx.
Beanshell script to generate test-users details looks like below and takes the following args:
- test-users count
- test-user name template ("TestUser_" in your case)
- test-user name format (e.g. 0 - to get TestUser_1, 00 - to get TestUser_01, 000- for TestUser_001, etc... you can simply hardcode this orexclude at all)
- name of generated file.
import java.text.*;
import java.io.*;
import java.util.*;
String [] params = Parameters.split(",");
int count = Integer.valueOf(params[0]);
String testName = params[1];
String nameFormat = params[2];
String usersList = params[3];
StringBuilder contents = new StringBuilder();
try {
DecimalFormat formatter = new DecimalFormat(nameFormat);
FileOutputStream fos = new FileOutputStream(System.getProperty("user.dir") + File.separator + usersList);
for (int i = 1; i <= count; i++) {
String s = formatter.format(i);
String testUser = testName + s;
contents.append(testUser).append(",").append(testUser);
if (i < count) {
contents.append("\n");
}
}
byte [] buffer = contents.toString().getBytes();
fos.write(buffer);
fos.close();
}
catch (Exception ex) {
IsSuccess = false;
log.error(ex.getMessage());
System.err.println(ex.getMessage());
}
catch (Throwable thex) {
System.err.println(thex.getMessage());
}
All together it will look like:
Sorry if answer is too overloaded.
Hope this helps.
The "User Defined Variables" config element does not pick up the reference variable from the "Counter" config element. I think this is a bug in JMeter. I have verified this behavior in version 3.2.
I added a "BeanShell Sampler" element to work around the issue.
Notice that the reference name of the "Counter" element is INDEX
The RUN_FOLDER variable gets set to a combination of the TESTS_FOLDER variable and the INDEX variable in the "BeanShell Sampler"
The "Debug Sampler" simply gathers a snapshot of the variables so I can see them in the "View Results Tree" listener element. Notice how the RUN_FOLDER variable has the INDEX variable value (5 in this case) appended.
I'm writing a program in Ruby that downloads a file from an RSS feed to my local hard drive. Previously, I'd written this application in Perl and figured a great way to learn Ruby would be to recreate this program using Ruby code.
In the Perl program (which works), I was able to download the original file directly from the server it was hosted on (keeping the original file name) and it worked great. In the Ruby program (which isn't working), I have to sort of "stream" the data from the file I want into a new file that I've created on my hard drive. Unfortunately, this isn't working and the "streamed" data is always coming back empty. My assumption is that there is some sort of redirect that Perl can handle to retrieve the file directly that Ruby cannot.
I'm going to post both programs (they're relatively small) and hope that this helps solve my issue. If you have questions, please let me know. As a side note, I pointed this program at a more static URL (a jpeg) and it downloaded the file just fine. This is why I'm theorizing that some sort of redirect is causing issues.
The Ruby Code (That Doesn't Work)
require 'net/http';
require 'open-uri';
require 'rexml/document';
require 'sqlite3';
# Create new SQLite3 database connection
db_connection = SQLite3::Database.new('fiend.db');
# Make sure I can reference records in the query result by column name instead of index number
db_connection.results_as_hash = true;
# Grab all TV shows from the shows table
query = '
SELECT
id,
name,
current_season,
last_episode
FROM
shows
ORDER BY
name
';
# Run through each record in the result set
db_connection.execute(query) { |show|
# Pad the current season number with a zero for later user in a search query
season = '%02d' % show['current_season'].to_s;
# Calculate the next episode number and pad with a zero
next_episode = '%02d' % (Integer(show['last_episode']) + 1).to_s;
# Store the name of the show
name = show['name'];
# Generate the URL of the RSS feed that will hold the list of torrents
feed_url = URI.encode("http://btjunkie.org/rss.xml?query=#{name} S#{season}E#{next_episode}&o=52");
# Generate a simple string the denotes the show, season and episode number being retrieved
episode_id = "#{name} S#{season}E#{next_episode}";
puts "Loading feed for #{name}..";
# Store the response from the download of the feed
feed_download_response = Net::HTTP.get_response(URI.parse(feed_url));
# Store the contents of the response (in this case, XML data)
xml_data = feed_download_response.body;
puts "Feed Loaded. Parsing items.."
# Create a new REXML Document and pass in the XML from the Net::HTTP response
doc = REXML::Document.new(xml_data);
# Loop through each in the feed
doc.root.each_element('//item') { |item|
# Find and store the URL of the torrent we wish to download
torrent_url = item.elements['link'].text + '/download.torrent';
puts "Downloading #{episode_id} from #{torrent_url}";
## This is where crap stops working
# Open Connection to the host
Net::HTTP.start(URI.parse(torrent_url).host, 80) { |http|
# Create a torrent file to dump the data into
File.open("#{episode_id}.torrent", 'wb') { |torrent_file|
# Try to grab the torrent data
data = http.get(torrent_url[19..torrent_url.size], "User-Agent" => "Mozilla/4.0").body;
# Write the data to the torrent file (the data is always coming back blank)
torrent_file.write(data);
# Close the torrent file
torrent_file.close();
}
}
break;
}
}
The Perl Code (That Does Work)
use strict;
use XML::Parser;
use LWP::UserAgent;
use HTTP::Status;
use DBI;
my $dbh = DBI->connect("dbi:SQLite:dbname=fiend.db", "", "", { RaiseError => 1, AutoCommit => 1 });
my $userAgent = new LWP::UserAgent; # Create new user agent
$userAgent->agent("Mozilla/4.0"); # Spoof our user agent as Mozilla
$userAgent->timeout(20); # Set timeout limit for request
my $currentTag = ""; # Stores what tag is currently being parsed
my $torrentUrl = ""; # Stores the data found in any node
my $isDownloaded = 0; # 1 or zero that states whether or not we've downloaded a particular episode
my $shows = $dbh->selectall_arrayref("SELECT id, name, current_season, last_episode FROM shows ORDER BY name");
my $id = 0;
my $name = "";
my $season = 0;
my $last_episode = 0;
foreach my $show (#$shows) {
$isDownloaded = 0;
($id, $name, $season, $last_episode) = (#$show);
$season = sprintf("%02d", $season); # Append a zero to the season (e.g. 6 becomes 06)
$last_episode = sprintf("%02d", ($last_episode + 1)); # Append a zero to the last episode (e.g. 6 becomes 06) and increment it by one
print("Checking $name S" . $season . "E" . "$last_episode \n");
my $request = new HTTP::Request(GET => "http://btjunkie.org/rss.xml?query=$name S" . $season . "E" . $last_episode . "&o=52"); # Retrieve the torrent feed
my $rssFeed = $userAgent->request($request); # Store the feed in a variable for later access
if($rssFeed->is_success) { # We retrieved the feed
my $parser = new XML::Parser(); # Make a new instance of XML::Parser
$parser->setHandlers # Set the functions that will be called when the parser encounters different kinds of data within the XML file.
(
Start => \&startHandler, # Handles start tags (e.g. )
End => \&endHandler, # Handles end tags (e.g.
Char => \&DataHandler # Handles data inside of start and end tags
);
$parser->parsestring($rssFeed->content); # Parse the feed
}
}
#
# Called every time XML::Parser encounters a start tag
# #param: $parseInstance {object} | Instance of the XML::Parser. Passed automatically when feed is parsed.
# #param: $element {string} | The name of the XML element being parsed (e.g. "title"). Passed automatically when feed is parsed.
# #attributes {array} | An array of all of the attributes of $element
# #returns: void
#
sub startHandler {
my($parseInstance, $element, %attributes) = #_;
$currentTag = $element;
}
#
# Called every time XML::Parser encounters anything that is not a start or end tag (i.e, all the data in between tags)
# #param: $parseInstance {object} | Instance of the XML::Parser. Passed automatically when feed is parsed.
# #param: $element {string} | The name of the XML element being parsed (e.g. "title"). Passed automatically when feed is parsed.
# #attributes {array} | An array of all of the attributes of $element
# #returns: void
#
sub DataHandler {
my($parseInstance, $element, %attributes) = #_;
if($currentTag eq "link" && $element ne "\n") {
$torrentUrl = $element;
}
}
#
# Called every time XML::Parser encounters an end tag
# #param: $parseInstance {object} | Instance of the XML::Parser. Passed automatically when feed is parsed.
# #param: $element {string} | The name of the XML element being parsed (e.g. "title"). Passed automatically when feed is parsed.
# #attributes {array} | An array of all of the attributes of $element
# #returns: void
#
sub endHandler {
my($parseInstance, $element, %attributes) = #_;
if($element eq "item" && $isDownloaded == 0) { # We just finished parsing an element so let's attempt to download a torrent
print("DOWNLOADING: $torrentUrl" . "/download.torrent \n");
system("echo.|lwp-download " . $torrentUrl . "/download.torrent"); # We echo the "return " key into the command to force it to skip any file-overwite prompts
if(unlink("download.torrent.html")) { # We tried to download a 'locked' torrent
$isDownloaded = 0; # Forces program to download next torrent on list from current show
}
else {
$isDownloaded = 1;
$dbh->do("UPDATE shows SET last_episode = '$last_episode' WHERE id = '$id'"); # Update DB with new show information
}
}
}
Yes, the URLs you are retrieving appear to be returning a 302 (redirect). Net::HTTP requires/allows you to handle the redirect yourself. You typically use a recursive techique like AboutRuby mentioned (although this http://www.ruby-forum.com/topic/142745 suggests you should not only look at the 'Location' field but also for META REFRESH in the response).
open-uri will handle redirects for you if you're not interested in the low-level interaction:
require 'open-uri'
File.open("#{episode_id}.torrent", 'wb') {|torrent_file| torrent_file.write open(torrent_url).read}
get_response will return a class from the HTTPResponse hierarchy. It's usually HTTPSuccess, but if there's a redirect, it will be HTTPRedirection. A simple recursive method can solve this, that follows redirects. How to handle this correctly is in the docs under the heading "Following Redirection."