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CloudFront Now Supports gRPC Calls For Your Applications

Your applications’ gRPC calls are now accepted by Amazon CloudFront.
You may now set up global content delivery network (CDN), Amazon CloudFront, in front of your gRPC API endpoints.
An Overview of gRPC
You may construct distributed apps and services more easily with gRPC since a client program can call a method on a server application on a separate machine as if it were a local object. The foundation of gRPC, like that of many RPC systems, is the concept of establishing a service, including the methods that may be called remotely along with their parameters and return types. This interface is implemented by the server, which also uses a gRPC server to manage client requests. The same methods as the server are provided by the client’s stub, which is sometimes referred to as just a client.
Any of the supported languages can be used to write gRPC clients and servers, which can operate and communicate with one another in a range of settings, including your desktop computer and servers within Google. For instance, a gRPC server in Java with clients in Go, Python, or Ruby can be readily created. Furthermore, the most recent Google APIs will include gRPC interfaces, making it simple to incorporate Google functionality into your apps.
Using Protocol Buffers
Although it can be used with other data formats like JSON, gRPC by default serializes structured data using Protocol Buffers, Google’s well-established open source method.
Establishing the structure for the data you wish to serialize in a proto file a regular text file with a.proto extension is the first step in dealing with protocol buffers. Protocol buffer data is organized as messages, each of which is a brief logical record of data made up of a number of fields, or name-value pairs.
After defining your data structures, you can use the protocol buffer compiler protoc to create data access classes from your proto specification in the language or languages of your choice. These offer methods to serialize and parse the entire structure to and from raw bytes, along with basic accessors for each field, such as name() and set_name(). For example, executing the compiler on the aforementioned example will produce a class named Person if you have selected C++ as your language. This class can then be used to serialize, retrieve, and populate Person protocol buffer messages in your application.
You specify RPC method parameters and return types as protocol buffer messages when defining gRPC services in standard proto files:
Protoc is used by gRPC with a specific gRPC plugin to generate code from your proto file. This includes the standard protocol buffer code for populating, serializing, and retrieving your message types, as well as generated gRPC client and server code.
Versions of protocol buffers
Although open source users have had access to protocol buffers for a while, the majority of the examples on this website use protocol buffers version 3 (proto3), which supports more languages, has a little simplified syntax, and several helpful new capabilities. In addition to a Go language generator from the golang/protobuf official package, Proto3 is presently available in Java, C++, Dart, Python, Objective-C, C#, a lite-runtime (Android Java), Ruby, and JavaScript from the protocol buffers GitHub repository. Additional languages are being developed.
Although proto2 (the current default protocol buffers version) can be used, it advises using proto3 with gRPC instead because it allows you to use all of the languages that gRPC supports and prevents incompatibilities between proto2 clients and proto3 servers.
What is gRPC?
A contemporary, open-source, high-performance Remote Procedure Call (RPC) framework that works in any setting is called gRPC. By supporting pluggable load balancing, tracing, health checking, and authentication, it may effectively connect services both within and between data centers. It can also be used to link devices, browsers, and mobile apps to backend services in the last mile of distributed computing.
A basic definition of a service
Describe your service using Protocol Buffers, a robust language and toolkit for binary serialization.
Launch swiftly and grow
Use the framework to grow to millions of RPCs per second and install the runtime and development environments with only one line.
Works on a variety of platforms and languages
For your service, automatically create idiomatic client and server stubs in several languages and platforms.
Both-way streaming and integrated authentication
Fully integrated pluggable authentication and bi-directional streaming with HTTP/2-based transport
For creating APIs, gRPC is a cutting-edge, effective, and language-neutral framework. Platform-independent service and message type design is made possible by its interface defining language (IDL), Protocol Buffers (protobuf). With gRPC, remote procedure calls (RPCs) over HTTP/2 are lightweight and highly performant, facilitating communication between services. Microservices designs benefit greatly from this since it facilitates effective and low-latency communication between services.
Features like flow control, bidirectional streaming, and automatic code generation for multiple programming languages are all provided by gRPC. When you need real-time data streaming, effective communication, and great performance, this is a good fit. gRPC may be an excellent option if your application must manage a lot of data or the client and server must communicate with low latency. However, compared to REST, it could be harder to master. Developers must specify their data structures and service methods in.proto files since gRPC uses the protobuf serialization standard.
When you put CloudFront in front of your gRPC API endpoints, we see two advantages.
Initially, it permits the decrease of latency between your API implementation and the client application. A global network of more than 600 edge locations is provided by CloudFront, with intelligent routing to the nearest edge. TLS termination and optional caching for your static content are offered by edge locations. Client application requests are sent to your gRPC origin by CloudFront via the fully managed, high-bandwidth, low-latency private AWS network.
Second, your apps gain from extra security services that are set up on edge locations, like traffic encryption, AWS Web Application Firewall’s HTTP header validation, and AWS Shield Standard defense against distributed denial of service (DDoS) assaults.
Cost and Accessibility
All of the more than 600 CloudFront edge locations offer gRPC origins at no extra cost. There are the standard requests and data transfer costs.
Read more on govindhtech.com
#CloudFront#SupportsgRPC#Applications#Google#AmazonCloudFront#distributeddenialservice#DDoS#Accessibility#ProtocolBuffers#gRPC#technology#technews#news#govindhtech
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Client Work(Android)| CST2335_Final_GroupProject_F20 project Audio Database Api part Output Video|Algonquin College
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Catch
So over the last few weeks I've been working on Catch. With work and the festive period I haven't had a lot of time; I finally got the opportunity to finish it last night. :)
It has a medium rating but I wouldn't say it's due to the initial foothold and privilege escalation being difficult- it's more due to there being a couple of rabbit holes (all of which I fell into for a period!)
Enumeration
As always, a port scan kicks off the process. Unfortunately I can't show the output of the port scan as during the time I switched laptops and I'm too lazy to power my old one on. xD However, the results were roughly as follows:
Port 80: HTTP (Catch Global Systems main page)
Port 3000: Gitea(?)
Port 5000: Lets Chat(?)
Port 8000: Cachet status page system
Port 80 was the first location I checked. You're greeted with what appears to be Catch's main application:
The signup/login functionality isn't present; I did notice the ability to download a file. The file that downloads is an apk.
For those that are unfamiliar with mobile applications, apk is one of the file formats for an Android mobile application which uses XML and Java. Having a little experience with mobile applications, my first thought was to decompile the apk and check for any hidden hardcoded secrets, usually stored in strings.xml.
To decompile the apk, I used apktool.
$ apktool d catchv1.0.apk
This decompiles the apk to near it's original form and places the resulting files in ./catchv1.0/. From here, I viewed ./res/values/strings.xml and found 3 potentially usable tokens for other applications:
$ grep token catchv1.0/res/values/strings.xml <string name="gitea_token">b87bfb6345ae72ed5ecdcee05bcb34c83806fbd0</string> <string name="lets_chat_token">NjFiODZhZWFkOTg0ZTI0NTEwMzZlYjE2OmQ1ODg0NjhmZjhiYWU0NDYzNzlhNTdmYTJiNGU2M2EyMzY4MjI0MzM2YjU5NDljNQ==</string> <string name="slack_token">xoxp-23984754863-2348975623103</string>
Foothold
With these in hand, I started with Lets Chat at random. Lets Chat is an open-source chat application utilizing a REST api. With it being open-source, it didn't take long at all to find how to use the discovered token:
As you can see, a password for John is viewable in one of the chat rooms. This grants you access to another one of their applications called Cachet- open-source yet again.
Cachet is the last stop before system access; admittedly this is where I fell rabbit hole 1 as I did spend some time trying to use the gitea_token, more out of curiosity than anything. After spending some time on this, however, I gave up and focused on Cachet.
As it turns out, the version of Cachet in use had two pubicly known vulnerabilities related to interaction with the application's dotenv file. One allowed you to leak values set in dotenv while the other allowed you to add new values to dotenv which could be used to achieve remote command execution. This is done by hosting a redis server, altering the dotenv file to make the application use your hosted redis server as a session driver and finally changing the value of the session key after the initial connection to a payload generated by phpggc. Better detail off this is given here.
I did spend some time playing around with the RCE vulnerability here, more out of interest as I haven't had any experience with Redis prior to this and it took me a while to get RCE working as the video doesn't explicitly show the process step-by-step.
Originally, I was getting the token from the source code in the application, adding this as a key with the phpggc payload as the value and then altering the dotenv file to connect to my Redis Server. As the RCE occurs when the client connects the second time and reads the value from the original session token, this didn't work.
I did eventually get this working, uploaded a PHP web shell and upgraded this to a reverse shell; this ultimately proved to be a waste of time as you end up in a Docker instance with no ability to break out of it!
With a heavy heart, I turned to the second vulnerability and leaked the database password from the dotenv file. This grants us access to the server through SSH as WIll.
Privilege Escalation
Privilege escalation was actually quite easy! Some simple enumeration reveals the presence of world-writeable directory /opt/mdm/apk_bin. In /opt/mdm, there is a Bash file verify.sh.
verify.sh is used to verify the legitimacy of apks uploaded to apk_bin and is executed as part of a cronjob which is executed as root. While references to verify.sh cannot be directly found, there is reference to 'check.sh' in the root directory in running processes (netstat -ano.)
The interesting lines of the script are here:
app_check() { APP_NAME=$(grep -oPm1 "(?<=string name=\"app_name\">)[^<]+" "$1/res/values/strings.xml") echo $APP_NAME ...
The function app_check is taking the app_name from strings.xml and echoing it back with no form of mitigation against command injection. For example, wrapping the variable name with ${} would have prevented this vulnerability being exploitable as this would have specified that only variable expansion was expected- the app name would have been echoed back as a string and not interpreted as a literal Bash command.
I tested this first by simply making the app name 'Catch; touch /opt/mdm/heuheu' and uploading it using python -m SimpleHTTPServer on my end and curl on Catch's end which achieved the expected outcome.
I did this with APK Editor Studio after encountering some errors trying do manually decompile and then recompile with apktool. Note that you also need to create a key for signing the APK as verify.sh uses jarsigner to verify this.
will@catch:/opt/mdm/apk_bin$ ls -al .. total 16 drwxr-x--x+ 3 root root 4096 Jan 6 21:55 . drwxr-xr-x 4 root root 4096 Dec 16 2021 .. drwxrwx--x+ 2 root root 4096 Jan 6 22:03 apk_bin -rw-r--r-- 1 root root 0 Jan 6 21:55 heuheu -rwxr-x--x+ 1 root root 1894 Mar 3 2022 verify.sh
From here, I went old school and just made /etc/passwd fully accessible by everyone before changing root's password to 'mwaha'
Generating the password:
$ openssl passwd mwaha KW56XEY7wxZuU
Where the password is added in /etc/passwd:
root:KW56XEY7wxZuU:...
There you go. ^-^
#hackthebox#hacking#android apk#apktool#command injection#redis server#dotenv#cachet#lets chat#gitea#cronjob#web shell#reverse shell#ssh#docker#open source
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Top 10 tools for DevOps success
DevOps is a set of practices which combines software development and IT operations with the aim to shorten the system development life cycle. It is an organization approach which enables faster development of applications and easier maintenance of existing deployments. The approach promotes shorter, more controllable iterations, automations and new tools.
DevOps is not just a technology, it covers everything from organization culture, processes and tools. It is a cultural change that allows the organization to break down the barrier between the development team and operations teams. DevOps includes continuous integration and continuous delivery (CI/CD), real-time monitoring, incident response systems and collaboration platforms.
DevOps is the catalyst to start this cultural shift and bring the whole IT team together in the agile mindset to improve the deployment frequency, allowing a faster time to market, a lower failure rate of new releases, shortened lead team and faster mean time recovery.
Despite DevOps being a cultural shift for an organization, the approach requires teams to adopt and use certain tools which would help the team to automate and enhance their processes.
Tools for DevOps:
GIT
GIT is a version control system which allows you to track changes in your file. Through this tool, the work could be easily coordinated amongst the team members. It is a free-open source tool, features branch workflow, allows distributed development, supports pull request and enables faster release cycle
Jenkins
Jenkins is a tool from developers for developers. It is a continuous integration server written in Java. Teams can use it for testing and reporting changes in near real time. Being a developer, it will help them to find and solve bugs in codes rapidly and automate the testing of their build.
It is a free- open source tool which integrates all your DevOps stages with the help of around 1000 plugins, scripts your pipeline having one or more build jobs into a single workflow. It also provides multiple ways of communication: web based GUI, CLI and Rest API.
Selenium
Selenium is a portable software testing framework for web applications. It provides the team with an easy interface for developing automated tests. It is a free-open source tool which helps in creating robust, browser based regression automation suites and tests, writing test scripts in multiple languages like Java, Python, C#, Ruby, Perl, Php, JavaScript, supports multiple platform for testing like iOS and android and easy to build a keyword driven framework for a web driver.
Docker
Docker is a lightweight tool which uses containers to package up an application with all the requirements and dependencies before shipping the complete container as one package. User docker container with any language, ship the container wherever you want, be it QA, your team or even the cloud, scale up to 1000’s node, update with zero downtime.
Puppet
Puppet is an open-source configuration management tool to deploy, configure and manage your servers. It is used to automate the method of inspecting, delivering and operating your software across the entire lifecycle with platform independency. It is based on master-slave architecture and long commercial track record
Chef
Chef is a powerful configuration management automation tool used to manage your data, attributes, roles, environments and cookbooks. It helps to transform the infrastructure to code. It is an Open-source configuration management tool which supports multiple platforms like AIX, RHEL/CentOS, FreeBSD and is easy to integrate with cloud-based platforms, active, smart and fast-growing community support.
Ansible
Ansible is an open-source tool which helps in managing your data, attributes, roles, environments and cookbooks. It helps in providing one of the simplest ways to automate your apps and IT infrastructures such as network configuration, cloud deployments and creation of development environments. It supports push configuration, based on master-slave architecture, completely agentless and simple syntax written YAML.
Nagios
Nagios is a powerful monitoring system which enables you and your organization to identify and resolve IT infrastructure problems before they affect critical business processes. It monitors and troubleshoot server performance issues, plans infrastructure upgrades before outdated systems cause failures and automatically fix problems when detected.
ELK Stack
ELK Stack is a combination of three powerful, open source tools: Elasticsearch, Log stash and Kibana used to collect insights out of your logs or data. It is a lightweight open source tool with multiple plugins, which is easy to deploy, perform search in near-real time, collects and analyzes logs from an excel file to a database or server, active and supportive discussion forum.
Splunk
Splunk is a software platform to search, analyze and visualize the machine-generated data for logs gathered from the websites, applications, sensors, devices etc which make up your IT infrastructure and business. It stores, searches, analyzes and visualizes the machine-generated data, ingests data in multiple file formats, creates knowledge objects for operational intelligence and monitors business metrics to get log insights.
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Aspose.Newsletter May 2017: Professional Word Documents Processing in Android Apps & Other News
Aspose Newsletter for May 2017 has now been published that highlights all the newly supported features offered in the recent releases. It also includes information about It also includes information adding Professional Word Documents Processing capabilities in Android Applications, Aspose Android APIs are Renamed to “Android via Java” and “Android via Xamarin”, Exporting Excel File to Any Supported Format, Apply Checksum Validation on Codabar Coded Barcode in .NET Applications, AutoFit Cells in Worksheet and Set Excel Page Breaks in Cloud Apps, How to Render Microsoft Outlook VCard Contacts to MHTML and many more.
Add Professional Word Documents Processing capabilities in an Android Applications
Read, Create, Edit and Convert Word Document Formats with Aspose.Words Android APIs. Aspose.Words products family is growing! We are pleased to officially launch Aspose.Words for Android via Java – enabling Android developers to perform pro level word document manipulation tasks directly within Android Apps. Whether it is document formatting, reporting, mail merge, rendering or conversion to some other file formats – Aspose.Words processing engine is super-efficient to perform with high-fidelity. Download Free Trial
Aspose Android APIs are Renamed to “Android via Java” and “Android via Xamarin”
Aspose Android APIs are ported from their Java APIs as they are subset components that include all the important and useful features present in their native Java APIs. Aspose.Words, Aspose.Cells and Aspose.Email for Android are following this new product naming structure now (example: If users are building native Android apps using Android Studio, the right product is Aspose.Words for Android via Java and if users are using Xamarin platform, users can use Aspose.Words for Android via Xamarin, to build mobile apps).
Apply Checksum Validation on Codabar Coded Barcode in .NET Applications
Aspose.BarCode for .NET API now exposes the CodabarChecksumMode enumeration to specify the checksum mode. EnableChecksum property of the BarCodeBuilder class is needed to be set to TRUE before setting the checksum mode. Read detailed examples here
AutoFit Cells in Worksheet and Set Excel Page Breaks in Cloud Apps
Process Excel files using Aspose.Cells for Cloud – platform independent REST APIs. Developers can import an Excel file, autofit rows and columns of any worksheet and then save to any supported file format. Continue reading here
How to: Export PowerPoint Presentation to HTML in .NET and Java?
Aspose.Slides for .NET and Java now support converting a PowerPoint presentation to HTML with embedded audio and video data. Access fully functional .NET and Java code snippets here
How to: Render Microsoft Outlook VCard Contacts to MHTML?
Aspose.Email provides support for email threading and conversion of Outlook VCard contact information to MHTML within .NET and Java applications. This can be achieved with MhtFormatOptions.RenderVCardInfo enumerator while saving the message to MHTML. Access .NET and Java code snippets here for quick reference
How to: Permanently Delete Email Messages from PST File in .NET and Java Apps?
Aspose.Email for .NET and Java allows deleting emails from PST files on permanent basis that no other email recovery or forensic tools can retrieve ever. This feature comes handy in some legal matters where private and privileged messages are supposed to be removed prior to access. Check out .NET and Java source code examples for further illustration:
How to: Print Microsoft OneNote Documents From .NET Applications?
Aspose.Note for .NET 17.3 allows programmers to print OneNote documents from within their .NET applications. The Document.Print method allows sending the loaded document to default printer but users can also specify printer settings for printing the document using the PrintOptions class. View the source code here
Updates about new Product Releases
Aspose.Total for .NET - a compilation of our latest .NET products.
Aspose.Total for Java – a compilation of our latest Java products.
Aspose.Total for Android – all the latest versions of our Android APIs.
Aspose.Total for SharePoint – a compilation of our latest SharePoint products.
Aspose.Total for Reporting Services – a compilation of our latest Reporting Services products
Aspose.Total for JasperReports – The latest versions of our JasperReports products.
Aspose.Pdf for .NET 17.4.0 – Improved PDF to PDF/A conversion with added text manipulation features.
Aspose.Words for .NET 17.4 – Custom formatting of Field Results along with 12 new feature improvements.
Aspose.Imaging for Java 17.4 – Improved support of image resizing and rate control algorithm implementation.
Aspose.Words for Android via Xamarin 17.4 – Improved support of linear gradients rendering as well as reading of GIF files.
Aspose.Tasks for .NET 17.3 – Improved formula value calculations within Microsoft Project files.
Aspose.Slides for Reporting Services 17.3 – Support for working in SharePoint 2016 integration mode.
Aspose.OCR for Java 17.03 – Improved processing of skewed image to deskewed.
Aspose.Slides for Reporting Services 17.3 – Support for working in SharePoint 2016 integration mode.
Supporting User Groups and Conferences
Aspose is sponsoring a number of user groups and upcoming events, including:
May 10-12: Microsoft Build 2017 – Seattle – WA, USA
May 15-18: Visual Studio Live! Austin – Austin – TX, USA
To sponsor a user group? Get in contact at [email protected]
Collect a copy of Aspose Newsletter, August 2016 edition
Collect the English version of this newsletter
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#Java Android File Formats APIs#Word Documents Processing in Android#Aspose Android APIs#Exporting Excel File Support#Checksum Validation on Codabar Barcode#AutoFit Cells in Worksheet
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Key Management Services Demo for Android With Alibaba Cloud KMS Service

Learn how to use the Alibaba Cloud Key Management Service (KMS) to create, control and manage your encryption keys on your mobile device. Prerequisites You need an Alibaba Cloud account. If you want, you can register here for a free trial. Basic knowledge of Android / Java 1. Activate the KMS service Log in to Alibaba Cloud, go to the console and click on "KMS Service". Activate the service. Please take note of the region where you want to create the keys. I created them in Hangzhou. Follow this illustrative guide to obtain the access codes. Please make a note of all the keys. 2. Create an Android project Create an Android project with the name you want. I gave him the name "KMSSample". Select the minimum SDK and device compatibility. I refer to devices with minimum API level 19 and above (only for phones and tablets). Select "Empty activity" and continue. Keep all the default settings as shown and click Finish. 3. Set the code We only have one java file and all the code related to the application is in a single file. We need to update the code in MainActivity.java. We will go through a detailed description later. Please copy the following code in the MainActivity.java file. Now we have to update the strings.xml file with the relevant details. Make sure you download the dependencies. 4. Create and run the code We need to add two glasses to ensure the correct functioning of the project. If you not get it clearly keep in touch with
Mobile App Developer in Austin
. 5. Explanation of the code level In the onCreate method, we get references to all the UI objects and create OnClickListener and assign it to all buttons. We have four asynchronous managers responsible for the functionality: Credential encryption: create the key in the cloud and update it. We use the appropriate key to encrypt your username and password. Your key is not stored anywhere in your code Decrypt credentials: call cipherBlob, call the decryption API to decrypt information and display it on the screen. Escape characters such as nr t are retained after decryption, so formatted text can be encrypted. Module data encryption: this class encrypts the data of the complete module to show, above all, the uniqueness of the keys we receive from the server. Decrypt form data: this class decrypts module data. We store all encrypted data in SharedPreferences and retrieve it when we call the Decrypt activities. The Alibaba Cloud KMS service offers excellent service to recover keys and eliminate them at dizzying speeds. This gives the application a high level of security. As you can see, all methods are self-explanatory. If done correctly, all compile problems will be resolved, and the application will be installed by clicking the small Play button in the Android Studio status bar. I highly recommend cloning the repository - you will eliminate many manual bugs and you will have this app working in a few minutes.
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Just how to Filter Your Kid's Kindle Fireplace In 3 Easy Steps
Software giants, like Google are disrupting the usually secure and established people in the cellular program progress business. Newcomers like Android have generated significant architectural improvements on the future of cellular program progress by imposing their rules. This changed atmosphere not only brings extra options, but additionally provides specific constraints. Designers today, need to examine their options and discover how they can benefit from this changed environment.
While cellular computing has found the interest of program designers, there has been hardly any work performed to examine the coding convenience of the technologies. Here we shall take a peek at two of the very generally accessible cellular progress surroundings - Android and Windows Portable and investigate and examine these options from the developer's perspective.
Android
Android was launched by Google in 2007, being an start source system for cellular computer PANDORA APK DOWNLOAD software progress for smartphones. The Android system was launched as part of the Start Device Alliance. The principal goal of the alliance was to set up start requirements for smartphones. Android is simply a Linux centered, start source operating-system for mobiles. As a mobile operating-system it allows designers to produce maintained limitations in Java, by utilizing Java libraries manufactured by Google. Not merely does Android supply a cellular operating-system including a progress atmosphere, in addition it provides a custom virtual device known as the Dalvik Electronic Equipment for working purposes along with functions since the middleware in involving the operating-system and the code. As it pertains to program progress, Android facilitates the utilization of 2D along with 3D visual libraries, advanced network features such as 3G, Edge and WLAN and a customized SQL motor for continuous storage.
Windows Portable
Produced by Microsoft, the Window Portable is an os for cellular devices. On the basis of the Microsoft Windows CE 5.0, Windows Portable is employed as an os on many smartphones, PDAs and touchscreen display devices. Windows Portable facilitates the formation of custom published purposes in maintained along with native codes. The Request Coding Program (API) in Windows Portable is extensible and has rich features along with a programmable layer. Besides that Windows Portable also takes advantageous asset of the features supplied by Microsoft.Net environment.
We will evaluate these systems and tightly examine their advantages and weaknesses. The systems will soon be compared on the foundation of implementation and efficiency features along with developer support. We've opted for these criteria for the comparison because they signify the main features when it comes to cellular computer software developers.
Implementation
We will use consistent storage as the foundation for comparing the implementation aspect. The technology used for consistent storage in cellular technology varies between various cellular progress environments. Equally Windows Portable and Android have the ability to use an on-device database which facilitates simpler manipulation along with removal of data. Also, so far as regional record storage is worried both surroundings support memory cards for additional storage space. However, the huge difference lies in the way the space for storing is exploited. While Android cannot deploy purposes on memory cards, Windows Portable allows it. Equally Android and Windows Portable systems have a relational database. Also, in both the systems the libraries have many of use persistence features. When the libraries have already been initialized, access to database can be obtained via an object concentrated software which can be quickly used by developers.
Performance
Performance numbers are very important for both people along with developers. The efficiency comparison of the 2 systems will soon be moved out on the basis of the record size. The basic purpose of testing record measurement is to obtain a better idea of the setting along with the run time dependencies which are included in packaged applications.
Android purposes come packaged in apk (Android Package) files. The .APK record typically has a group of .DEX (Android program files) documents, which perform such as a simple program declare application within the Android platform. The .APK record is basically the squeezed edition of the articles in the'Androidmanifest.xml'file.
Windows Portable purposes make use of cab-files for program appearance and deployment. The first faltering step while building a distributable record, involves appearance the application in a CAB (Cabinet) file. This CAB record can be started to different devices wherever it can be widened and installed. A CAB record is simply an executable repository which contains the application, methods, dependencies like DLLs and different source files.
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Android Training Course In Chandigarh.
Excellence Technology provides best Android Training Course in Chandigarh providing top class Android training in Chandigarh. To students & other who are looking for best Android Development Course In Chandigarh. In this Training We will cover all Aspects Android Development From Basic to Advance in very Easiest way. It offers 45days/2month/3month/6months training in Chandigarh. In the era of technology it is changing our life. Join our 100% Job oriented training & your first job in Android Development Industry.

Android operating system is the largest installed base among various mobile platforms across the globe. Hundreds of millions of mobile devices are powered by Android in more than 190 countries of the world. It conquered around 71% of the global market share by the end of 2021, and this trend is growing bigger every other day. The company named Open Handset Alliance developed Android for the first time that is based on the modified version of the Linux kernel and other open-source software.
Features of Android:-
Messaging SMS and MMS are available forms of messaging, including threaded text messaging and Android Cloud To Device Messaging (C2DM) and now enhanced version of C2DM, Android Google Cloud Messaging (GCM) is also a part of Android Push Messaging services. Android phones also have the ability to send and receive RCS via the messages app (if supported by the carrier).
Android Open Source Project so we can customize the OS based on our requirements.
Android supports different types of connectivity for GSM, CDMA, Wi-Fi, Bluetooth, etc. for telephonic conversation or data transfer.
Using wifi technology we can pair with other devices while playing games or using other applications.
It contains multiple APIs to support location-tracking services such as GPS.
We can manage all data storage-related activities by using the file manager.
It contains a wide range of media supports like AVI, MKV, FLV, MPEG4, etc. to play or record a variety of audio/video.
It also supports different image formats like JPEG, PNG, GIF, BMP, MP3, etc.
It supports multimedia hardware control to perform playback or recording using a camera and microphone.
Android has an integrated open-source WebKit layout-based web browser to support User Interfaces like HTML5, and CSS3.
Android supports multi-tasking means we can run multiple applications at a time and can switch between them.
It provides support for virtual reality or 2D/3D Graphics.

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Swagger editor for android

#Swagger editor for android how to
#Swagger editor for android apk
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#Swagger editor for android update
#Swagger editor for android android
We can't be held responsible for anything in the case of error, but remember us kindly if it ends up working. Spec-First is an awesome way to build your API in advance and start work on front-end and back-end in parallel. We can't guarantee that it works perfectly but the option is available to use it with any app installed on your phone.Īs you can understand, it's a rather sensitive tool so be careful when it comes to using or keep an eye on anyone using it. Workspace where front-end & back-end developers make API contracts. You know, for those friends of yours that want to have two installations of WhatsApp with different accounts.
#Swagger editor for android apk
Redesign the interface to your own liking.Īnother important feature of APK Editor is its capacity to clone apps.
Extract anything you want from your installed applications, including images, music, and sound.
If you dare, you'll be able to do quite a few interesting things when it comes to modding your favorite apps. Bothersome banners that get in your way in the middle of a game? Applications with restrictions that don't allow you to do what you want? Ugly wallpapers? Horrible sounds that you want to change? Then this is just what you were looking for.īut we don't want to deceive you, it's not an app for newbies, so you'll be better off with certain technical knowledge about APK works at a code level. And what can this be useful for? Well, to deal with loads of applications that do things that could be improved or to get rid of things that we don't like.ĪPK Editor is an editor for APK files that offers you loads of options, almost as many as you can imagine.
#Swagger editor for android how to
Well, these files like many others can be edited if you know how to. Make me a gangsterPut on a pair of thug life glasses and show your swagger Download the Thug Life Photo Editor to get yourself some mld shades and a gold necklace Find out how to be a.
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Thanks for taking out time to read this article.As you already know, the apps installed on an Android device usually come along as files in APK format. BuildProp Editor Premium - A utility that allows you to edit and view file information in build.prop. When adding the generated code to android studio project, there are can not resolve import io.swagger.v3. errors. I have already looked the the SO post RX JAVA + Retrofit sdk generation using Swagger codegen and able to generate the sdk. You should get something similar to the screenshot below I need to generate the Android client sdk for my API. Open your browser and go to localhost:3000/docs
#Swagger editor for android update
Put: # endpoint request type (put request)ĭescription: path parameter takes the pet idĭescription: It enables a user to update pet profileĭescription: An object with a user updated user profile detailĭefinitions: # Schema definition for the request body With a request body similar to the one below: : # path of the user from your endpoint To document a user POST request body to localhost:3000/api/users In earlier step,we have saved the specification in yaml format. Generate API code with swagger codegen tool. Save the specification as yaml file from editor File>Save as YAML. In the docs folder, we will create two YAML file user.yaml Put the above specification in Swagger editor left pane and see the Swagger documentation visually. use swagger-Ui-express for your app documentation endpointĪpp.use('/docs', rve, tup(swaggerSpec)) Host: 'localhost:3000', // the host or url of the appīasePath: '/api', // the basepath of your endpointĬonst swaggerSpec = swaggerJSDoc(options) Title: 'REST API for my App', // Title of the documentationĭescription: 'This is the REST API for my product', // short description of the app const express = require('express') Ĭonst swaggerJSDoc = require('swagger-jsdoc') Ĭonst swaggerUi = require('swagger-ui-express') īelow your imported file write the following lines of code // Create global app objects
#Swagger editor for android install
To install this packages, you need to run npm install -save swagger-jsdoc swagger-ui-expressĪfter successful installation, open the app.js file and import the following file at the top of the file. To use this tutorial, you need to install the following npm package: In the swagger-doc directory, run npm initįollow the instruction to set up the package.json file.Ĭreate the app.js file and doc folder in the root directory of your project using touch app.js Navigate to the directory using cd swagger-doc You can then create a folder named swagger-doc on your desktop using the command below mkdir swagger-doc I had to do lots of research before I could finally come up with what I want.įirst thing first, you need to create a directory for the project, navigate to your desktop by typing the following command in your terminal cd Desktop I spent days searching for articles online but couldn’t lay my hand on any that suit my purpose. After lots of research online on how to write documentation using swagger on the local environment instead of using swagger online editor for easy team collaboration, I discovered that no good articles could point me through the right direction.

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Client Work(Android)| CST2335_Final_GroupProject_F20 project Audio Database Api part Output Video|Algonquin College
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Intellij idea tutorial for beginners pdf

Intellij idea tutorial for beginners pdf how to#
Intellij idea tutorial for beginners pdf pdf#
Intellij idea tutorial for beginners pdf update#
Intellij idea tutorial for beginners pdf android#
Intellij idea tutorial for beginners pdf software#
Additionally reader should have basic understanding.
Intellij idea tutorial for beginners pdf software#
What are you waiting for? Press the BUY NOW button and start the course. This tutorial assumes preliminary knowledge of software development process and. SO ARE YOU READY TO GET STARTED AS A JAVA DEVELOPER? Students who want to learn java academically People who are looking to transition their way to become a java developer Students who want to start their career working as a java developer
Intellij idea tutorial for beginners pdf how to#
I will also teach you how to build interactive programs by accepting input from the user I will also teach you about object oriented concepts like inheritance, polymorphism, encapsulation and abstraction in java Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web. The following is the list of recommended system requirements for running Intellij IDEA 15. Setup In this example we shall use Intellij IDEA 15.0 Community Edition, which can be downloaded from the JetBrains website.
Intellij idea tutorial for beginners pdf pdf#
I will also teach you how to create methods, constructors, classes and objects Besides studying them online you may download the eBook in PDF format Download NOW 1. I will teach you about loops in java and conditional statements I will teach you about variables, data types and different operators in java If your code is scattered around different directories you will have to either print it in. In this course, you will learn what is java and how it works Select the directory that contains all of your source code. Learn concepts of core java and write programs Please request a refund, I only want satisfied students If after taking this course you realize that this is not for you. This course is backed by Udemy's 30 day money back guarantee. Well run through a quick tutorial covering the basics of selecting rows. This is a practical course, where in in every lecture, I will actually write a example program to make you understand the concept IntelliJ IDEA provides methods for installing, uninstalling, and upgrading. So if you are a beginners, don't worry, I am 100% committed to help you succeed. This course is designed keeping beginners in mind, we have made sure that each and every concept is clearly explained in a easy to understand manner.
Intellij idea tutorial for beginners pdf android#
If you are looking to be android developer, you need to learn java programming and that's where this course can help you. This course is java for complete beginners. This course also helps you get started as a java programmer from scratch (Java for beginners). This is not a theoretical course, but instead I will teach you step by step, practically, by writing programming examples. How to import iText 7 in IntelliJ IDEA to create a Hello World PDF In these tutorials, we only define the kernel and the layout projects as dependencies. There are three variants a typed, drawn or uploaded signature. Decide on what kind of signature to create. This course teaches you everything you should know to about Java Programming to become a java developer and get the job. Follow the step-by-step instructions below to design your intellij idea tutorial pdf: Select the document you want to sign and click Upload. New keyword and memory allocation (Section 6) Updated the course with a new section - "Arrays".Īdded 2 new lectures “Learn to write interactive programs in java” and “swap two variables using third variable” We are adding a new section on exception handling. information about the component kit starter, you can check this tutorial. PDF DOWNLOAD EBOOK Kotlin Programming: The Big Nerd Ranch Guide By. The plugin is now installed into your Intellij IDEA, you can start using it. As you may know IntelliJ IDEA provides a tool that converts Java source code into Kotlin. book will also introduce you to JetBrains IntelliJ IDEA development env. Upgraded with 3.5 hours of new content and 17 new lectures which will power up your ability to learn java. Below I want to show you a basic example of how to do this. Updated section 10 : Exception handling by adding resources which contain code samples which students can download and use to execute the programs. New lectures added in section : “Variables, Datatypes and Operators in Java”Īdded supplemental resources to every lecture of this course in the form of PDF handouts.
Intellij idea tutorial for beginners pdf update#
Here is our course update timeline.ģ new sections with 5+ hours of content as below :Ģ new sections with 5+ hours of content - "Collection in java" and "Modifiers in java"Ĭoding challenges and new content added in section : “Conditional statements and loops in Java”Ģ hours of content added in section : “Conditional statements and loops in Java”
Google maven dependencies.This course is updated frequently.

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Pdf reader pro free reduce file size

#Pdf reader pro free reduce file size pdf#
#Pdf reader pro free reduce file size android#
Sign PDFs from your Mac! Sign PDFs on your Mac with your digital signature. Select the text you wish to edit, then click "Correct Text" and save your PDF.
#Pdf reader pro free reduce file size pdf#
Do you need to make major changes to your PDF? For easy PDF editing and sharing, export your PDFs to.docx format. This allows you to convert scanned text into words that you can use and then proofread them for accuracy. Proofread OCR text PDFpen does optical character recognition (OCR).
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MuPDF API has been used as the PDF engine in a variety of deployments ranging from Android and iOS mobile applications, SaaS and cloud solutions, document management programs, and embedded products, to name a few.Īdd signatures, text, or images. It is highly flexible and optimized for each unique platform. MuPDF supports most of the major coding environments and operating systems. In addition to the Java API, C++ and Python bindings have been developed. In addition to the C library, there's a Java library using JNI that works for both Oracle's Java and Android. MuPDF supports document conversion to other formats including HTML, SVG, and CBZ. The command-line tools provide users myriad customization options for rendering and converting documents, and manipulating PDF files. The PDF library includes interactive features such as annotations, form filling, digital signatures, redactions, and search. The renderer is designed for high-fidelity anti-aliased graphics and renders text with metrics and spacing accurate to within fractions of a pixel. The small yet fast viewer supports a number of document formats including PDF, XPS, OpenXPS, CBZ, and ePUB. Add robust PDF features to your apps with the easy-to-integrate MuPDF SDK/

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How to Implement Flutter Barcode Scanner From Scratch - DZone Web Dev

About two years ago, I wrote an article sharing how to build a Flutter barcode plugin with Dynamsoft Barcode Reader step by step. At that time, Flutter was still under development and only supported Android and iOS. Nowadays, Google has released Flutter 2, which allows developers to build apps for mobile, web, and desktop from a single codebase. If you want to build cross-platform apps, it is worth putting much effort into Flutter from now on. Since the new Flutter is not compatible with the old one, I decide to refactor the APIs of the Flutter barcode plugin and add a new method to support barcode scanning by video stream in real-time.
Flutter Barcode SDK Plugin
In the following paragraphs, I will demonstrate how to develop a Flutter barcode plugin that supports reading barcodes from an image file and image buffer, as well as how to publish the plugin to pub.dev.
Developing Flutter Barcode SDK Plugin With Dynamsoft Barcode Reader
My current plan is to make the plugin work for Android. Therefore, I create the plugin package as follows:
To add code for other platforms, such as iOS, to the plugin project, I can run:
The plugin API is defined in the lib/flutter_barcode_sdk.dart file, which is the bridge between Dart code and platform-specific code. A android/src/main/java/com/dynamsoft/flutter_barcode_sdk/FlutterBarcodeSdkPlugin.java file is generated as the Android entry point.
Dart Code
Let’s get started with lib/flutter_barcode_sdk.dart.
The first step is to define a BarcodeResult class, which contains barcode format, result, and coordinate points, for deserializing JSON data returned from platform-specific code:
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The _convertResults() function is used to convert List<Map<dynamic, dynamic>> type to <List<BarcodeResult>> type.
Java Code
When invoking Flutter API, the Android onMethodCall() function will be triggered:
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Here are the basic steps for platform-specific code:
The decodeImageBuffer method is designed for camera stream. To avoid blocking the main thread, I use SingleThreadExectuor to deal with the CPU-intensive work in a worker thread.
Publishing Flutter Barcode SDK Plugin to Pub.dev
Prior to publishing the plugin, you’d better pass analysis by running the command:
If there is no error, you can publish the package to pub.dev:
I have successfully published the Flutter barcode SDK to https://pub.dev/packages/flutter_barcode_sdk.
Flutter Barcode Scanner
Once the plugin is done, it is time to build a barcode scanner app with a few lines of Dart code.
First, I add the Flutter camera plugin and flutter_barcode_sdk to the pubspec.yaml file:
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Then, initialize the camera and barcode reader objects in main.dart:
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The app consists of a camera view, a text widget and two button widgets:
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In the videoScan() function, I invoke startImageStream() to continuously get the latest video frame and call the barcode decoding API:
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The pictureScan() function reads barcode from an image and show the image and results on a picture screen:
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Finally, I can build and run the app:
A test for recognizing the 1D barcode and QR code on the Raspberry Pi packing box.
iOS, Web, and Windows.
This content was originally published here.
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Serviio 2.2 Torrent Download
Serviio 2.2 Torrent Download
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Aspose.Newsletter April 2017: Guaranteed Solutions for PDF Processing Problems & Other News
Aspose Newsletter for April 2017 has now been published that highlights all the newly supported features offered in the recent releases. It also includes information about one guaranteed solution for PDF Processing Problems, full support for Microsoft Word 2013 & enhancements in LINQ Reporting Engine, release of Aspose.Words for Xamarin.Android, importing DRC Files & Export to supported 3D File Formats, Compare PowerPoint Slides & Identify Merged Tables, embedding Media Files in .NET PDF Document, calculate Excel Formulas using C++ APIs and more.
One Guaranteed Solution for all your PDF Processing Problems
It’s super-easy to manipulate and convert PDF files with Aspose.PDF. Aspose.Pdf is a set of PDF Processing APIs to Create, Read, Edit, Convert, Protect, Sign and Print PDF documents without installing Adobe Acrobat. Try out fully featured Demos, Examples, Plugins, Showcase projects and a comprehensive Documentation to take a start from. Download Free Trial
Just Launched: Aspose.Words for Xamarin.Android
Wait is over! Good news for Android developers as they will use Aspose.Words APIs now to read, convert and combine Microsoft Word and other popular word processing file formats from within their native Android applications. Continue reading here Full Support for Microsoft Word 2013 and Enhancements in LINQ Reporting Engine
Aspose.Words for .NET 17.3.0 supports 67 new features and enhancements including full support of roundtrip to/from DOCX, variables supports in LINQ reporting engine and improved font substitution mechanism. Continue reading here.
Import DRC Files and Export to supported 3D File Formats
Aspose.3D for .NET 17.3.0 now supports opening Google Draco Encoded (DRC) files and saving to any 3D formats (FBX, STL, WavefrontOBJ, Discreet3DS, Univeral3D, Collada, gITF and GLB). Read more here
Compare PowerPoint Slides and Identify Merged Tables
Aspose.Slides for .NET 17.2.0 now allows comparing two slides based on shapes, styles, texts, animation and other settings. If slides are equal, true will be returned. Continue reading further
Exporting RDL Reports to EPUB Format
Apart from rendering RDL files to PDF and XPS formats – export to EPUB format is also supported now. This option is available in both ReportServer as well as in Visual Studio when using Aspose.Pdf for Reporting Services in local mode. Continue reading here.
How to: Embed Media Files in .NET PDF Document
With Aspose.Pdf for .NET 17.3.0 – embed audio and video files into a PDF document. Check documentation link for C# source code.
How to: Convert PDF to EPUB in Android Applications
Aspose.Pdf for Android 16.12.0 supports converting either a newly created or exiting PDF file to EPUB format within your Android applications. Check this source code in Java for further illustration
How to: Convert PDF to PDFA_3U and Extract Chart as Image from a PDF Document
Aspose.Pdf for Java 17.2.0 has introduced PDFA_3U support in this release. Developers can also extract chart from PDF file as an image using extractMarkedContentAsImage() method. Check out the code snippets here.
How to: Calculate Excel Formulas using C++ APIs
Aspose.Cells for C++ has added more overloads of workbook calculation which provide users more control and flexibility to calculate Excel functions on runtime. Users can also implement their own custom functions if needed. Read more here
Updates about new Product Releases
Aspose.Total for .NET - a compilation of our latest .NET products.
Aspose.Total for Java – a compilation of our latest Java products.
Aspose.Total for Android – all the latest versions of our Android APIs.
Aspose.Total for SharePoint – a compilation of our latest SharePoint products.
Aspose.Total for Reporting Services – a compilation of our latest Reporting Services products
Aspose.Total for JasperReports – The latest versions of our JasperReports products.
Aspose.Imaging – Improved synchronized access to mutually exclusive images in Java and .NET.
Aspose.Barcode – Improved memory consumption and barcode recognition processes in Java and .NET.
Aspose.Slides for Reporting Services 17.2.0 – Support for identifying merged cells inside table and comparing two slides for equality
Aspose.Cells for Cloud 17.02.0 – Lots of new features and enhancements made in this release.
Aspose.BarCode for Java 17.01 – Read Datamatrix and recognize 3D-distorted MicroQr barcodes.
Aspose.Slides – Improved text rendering in JasperReports and SharePoint applications.
Aspose.Slides for Java 17.2.0 – Improved Table and Slides comparison in Java applications.
Supporting User Groups and Conferences
Aspose is sponsoring a number of user groups and upcoming events, including:
May 10-12: Microsoft Build 2017 – Seattle – WA, USA
May 15-18: Visual Studio Live! Austin – Austin – TX, USA
Would you like us to sponsor your user group? Get in contact at [email protected]
Collect your copy of Aspose Newsletter, August 2016 edition
Collect the English version of this newsletter
#Java Android File Formats APIs#PDF Processing solutions#LINQ Reporting Engine enhancements#Import DRC Files#Compare PowerPoint Slides#Identify Merged Tables#Embed Media Files in PDF#Convert PDF to EPUB in Android
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