12/22/2020 App To Read Html File On Mac
Note: This chapter describes property list keys specific to the macOS implementation of App Sandbox. They are not available in iOS.
In your macOS Xcode project, configure fine-grained security permissions by enabling settings in the Summary tab of the target editor. These settings, in turn, add Boolean values to entitlement keys in the targetâs
.entitlements property list file. The values are then incorporated into the targetâs code signature when you build the project.
Jul 04, 2020 Mac OS X and macOS both come with a built-in compression system that can zip and unzip files. This integrated system is relatively basic, which is why many third-party apps are also available. A quick look at the Mac App Store reveals more than 50 apps for zipping and unzipping files. Many web browsers can open HTML files. Using Safari on your Mac, you can save the HTML file. Step 1: Open HTML File. Double-click the target HTML file to open it with Safari or other default browsers. Print the Page. On the top menu, select the 'File'Print' button to open the Print dialog window. Jun 29, 2020 An HTM or HTML file is a Hypertext Markup Language file and is the standard web page file type on the internet. Since HTM files are text-only files, they just contain text (like what you're reading now), as well as text references to other external files (like the image in this article). There are some HTML files (no pattern that I've figured out) that I can't open via the terminal, GUI or right clicking Open in Browser via Sublime Text 3. The default browser to open the file is definitely set to Chrome. When I say to open the file in the browser it takes me to the Chrome window, but doesn't actually open the file I want. View the source code of any website or webpage using the free HTML Viewer app If you want to view the source code of any website on your phone, hereâs an app to let you view the html code of any webpage easily. With the HTML Viewer app, you can view the html source code in the in-app file browser. The app is extremely easy to use and you can load the file from your file manager.
You can think of using App Sandbox entitlements as a two-step process:
At runtime, if a target requires a capability or a system resource for which the target isnât entitled, the sandbox daemon (
sandboxd ) logs a violation message to the console.
For more information about App Sandbox, read App Sandbox Design Guide.
App Sandbox Entitlement Keys
This section describes the keys you can use to confer capabilities to a sandboxed app in macOS. The first key enables App Sandbox; the others configure the sandbox. If App Sandbox is not enabled, the other keys in this section are meaningless.
The value to use for any of these keys is a Boolean
YES or NO , with the default value in each case being NO . If you are editing the .entitlements file directly in a text editor, the corresponding Boolean values to use are <true/> and <false/> . The default value for each key is false, so you can (and generally should) leave out the entitlement entirely rather than specifying a false value.
In cases where there are read-only and read/write entitlement key pairs, use of either key in the pair is mutually exclusive with the other.
Add these keys by using the Summary tab of the Xcode target editor. You can also add them directly to a targetâs
.entitlements file with the Xcode property list editor.
For information on additional entitlements for handling special circumstances, see App Sandbox Temporary Exception Entitlements.
For each key in this table, providing a Boolean value of
YES enables the corresponding capability (unless otherwise noted).
Capability
Enables App Sandbox for a target in an Xcode project
Allows access to group containers that are shared among multiple apps produced by a single development team, and allows certain additional interprocess communication between the apps
Supported in macOS v10.7.5 and in v10.8.3 and later. The format for this attribute is described in Adding an App to an App Group.
Read-only access to the userâs Movies folder and iTunes movies
For details, see Enabling Access to Files in Standard Locations.
Read/write access to the userâs Movies folder and iTunes movies
For details, see Enabling Access to Files in Standard Locations.
Read-only access to the userâs Music folder
For details, see Enabling Access to Files in Standard Locations.
Read/write access to the userâs Music folder
For details, see Enabling Access to Files in Standard Locations.
Read-only access to the userâs Pictures folder
For details, see Enabling Access to Files in Standard Locations.
Read/write access to the userâs Pictures folder
For details, see Enabling Access to Files in Standard Locations.
Communication with AVB devices
For details, see Enabling Hardware Access.
Interaction with Bluetooth devices
For details, see Enabling Hardware Access.
Capture of movies and still images using the built-in camera, if available
For details, see Enabling Hardware Access.
Interaction with FireWire devices (currently, does not support interaction with audio/video devices such as DV cameras)
For details, see Enabling Hardware Access.
Recording of audio using the built-in microphone, if available, along with access to audio input using any Core Audio API that supports audio input
For details, see Enabling Hardware Access.
Interaction with serial devices
For details, see Enabling Hardware Access.
Interaction with USB devices, including HID devices such as joysticks https://clevermuscle672.weebly.com/blog/use-windows-to-download-your-mac-apps.
For details, see Enabling Hardware Access.
Read/write access to the userâs Downloads folder
For details, see Enabling Access to Files in Standard Locations.
Use of app-scoped bookmarks and URLs
For details, see Enabling Security-Scoped Bookmark and URL Access.
Use of document-scoped bookmarks and URLs
For details, see Enabling Security-Scoped Bookmark and URL Access.
Read-only access to files the user has selected using an Open or Save dialog
For details, see Enabling User-Selected File Access.
Read/write access to files the user has selected using an Open or Save dialog
For details, see Enabling User-Selected File Access.
Allows apps to write executable files.
For details, see Enabling User-Selected File Access.
Child process inheritance of the parentâs sandbox
For details, see Enabling App Sandbox Inheritance.
Network socket for connecting to other machines
For details, see Enabling Network Access.
Network socket for listening for incoming connections initiated by other machines
For details, see Enabling Network Access.
com.apple.security.personal-information.addressbook
Read/write access to contacts in the userâs address book; allows apps to infer the default address book if more than one is present on a system
For details, see Enabling Personal Information Access.
Read/write access to the userâs calendars
For details, see Enabling Personal Information Access.
Use of the Core Location framework for determining the computerâs geographical location
For details, see Enabling Personal Information Access.
Printing
For details, see Enabling Hardware Access.
Ability to use specific AppleScript scripting access groups within a specific scriptable app
For details, see Enabling Scripting of Other Apps.
Enabling App Sandbox
You enable App Sandbox individually for each target in an macOS Xcode project. For example, you may design a project as a main app, and some helpers in the form of XPC services. You then enable and configure the sandbox for each target individually.
To learn how to enable App Sandbox for your macOS app, which includes performing code signing, see App Sandbox Quick Start in App Sandbox Design Guide. The essential step is to ensure that the target editor checkbox named in Table 4-1 is selected.
Enabling User-Selected File Access
Xcode provides a pop-up menu, in the Summary tab of the target editor, with choices to enable read-only or read/write access to files and folders that the user explicitly selects. When you enable user-selected file access, you gain programmatic access to files and folders that the user opens using an
NSOpenPanel object, and files the user saves using an NSSavePanel object.
Certain other user interactions, such as dragging items to your app or choosing items from the Open Recent menu, automatically expand your sandbox to include those items. Similarly, when macOS resumes an app after a reboot, the sandbox is automatically expanded to include any items that are automatically opened.
To enable user-selected file access in your app, use the Xcode target editor setting shown in Table 4-2.
Note: If your app needs to create executable files that are typically executed in some way other than through Launch Services (shell scripts, for example), you should also specify the
com.apple.security.files.user-selected.executable entitlement.
By default, when writing executable files in sandboxed apps, the files are quarantined. Gatekeeper prevents quarantined executable files and other similar files (shell scripts, web archives, and so on) from opening or executing unless the user explicitly launches them from Finder.
If those executables are tools that are intended to run from the command line, such as shell scripts, this presents a problem. With this flag, the file quarantine system allows the app to write non-quarantined executables so that Gatekeeper does not prevent them from executing.
This entitlement does not have an Xcode checkbox, and thus must be added to your appâs entitlement property list manually. For details, see App Sandbox Entitlement Keys.
Enabling Access to Files in Standard Locations
In addition to granting user-selected file access, you can employ entitlements to grant programmatic file access to the following user folders:
The Xcode control for enabling Downloads folder access is a checkbox; the controls for enabling access to these other folders are pop-up menus.
When you enable programmatic access to the userâs Movies folder, you also gain access to their iTunes movies.
Reopening of files by macOS using Resume does not require the presence of any entitlement key.
To enable programmatic access to specific folders, use the Xcode target editor settings shown in Table 4-3.
Enabling Security-Scoped Bookmark and URL Access
If you want to provide your sandboxed app with persistent access to file system resources, you must enable security-scoped bookmark and URL access. Security-scoped bookmarks are available starting in macOS v10.7.3.
To add the
bookmarks.app-scope or bookmarks.document-scope entitlement, edit the targetâs.entitlements property list file using the Xcode property list editor. Use the entitlement keys shown in Table 4-4, depending on which type of access you want. Use a value of <true/> for each entitlement you want to enable. https://clevermuscle672.weebly.com/blog/data-envelopment-analysis-software-mac. You can enable either or both entitlements.
For more information on security-scoped bookmarks, read Security-Scoped Bookmarks and Persistent Resource Access in App Sandbox Design Guide.
Enabling Network Access
Xcodeâs Network checkboxes in the Summary tab of the target editor let you enable network access for your app.
To enable your app to connect to a server process running on another machine (or on the same machine), enable outgoing network connections.
To enable opening a network listening socket so that other computers can connect to your app, allow incoming network connections.
Note: Both outgoing and incoming connections can send and receive data. The sole difference is in whether your app is initiating the connection or is receiving connections initiated by other apps or other hosts.
To enable network access, use the Xcode target editor settings shown in Table 4-5.
Enabling Hardware Access
To allow a sandboxed target to access hardware services on a systemâUSB, printing, or the built-in camera and microphoneâenable the corresponding setting in the Summary tab of the Xcode target editor.
To enable access to hardware, use the Xcode target editor settings shown in Table 4-6.
To allow access to hardware devices for which no checkbox exists in Xcodeâs user interface, you must manually add the appropriate entitlement to your appâs entitlements property list. These additional entitlements are listed in Table 4-7. All of these keys take a Boolean value.
Enabling Personal Information Access
A userâs personal information is inaccessible to your sandboxed app unless you grant access using the appropriate settings.
To enable access to personal information, use the Xcode target editor settings shown in Table 4-8.
Adding an App to an App Group
The
com.apple.security.application-groups (available in macOS v10.7.5 and v10.8.3 and later) allows multiple apps produced by a single development team to share access to a special group container. This container is intended for content that is not user-facing, such as shared caches or databases.
In addition, this attribute allows the apps within the group to share Mach and POSIX semaphores and to use certain other IPC mechanisms among the groupâs members. For additional details and naming conventions, read âMach IPC and POSIX Semaphores and Shared Memoryâ in App Sandbox Design Guide.
The value for this key must be of type
array , and must contain one or more string values, each of which must consist of your development team ID, followed by a period, followed by an arbitrary name chosen by your development team. For example:
The group containers are automatically created or added into each appâs sandbox container as determined by the existence of these keys. The group containers are stored in
~/Library/Group Containers/<application-group-id> , where <application-group-id> is one of the strings from the array. Your app can obtain the path to the group containers by calling the containerURLForSecurityApplicationGroupIdentifier: method of NSFileManager .
Enabling App Sandbox Inheritance
If your app employs a child process created with either the
posix_spawn function or the NSTask class, you can configure the child process to inherit the sandbox of its parent. However, using a child process does not provide the security afforded by using an XPC service.
Important: XPC (as described in External Tools, XPC Services, and Privilege Separation) complements App Sandbox and is the preferred technology for implementing privilege separation in an macOS app. Before using a child process, consider using an XPC service instead.
To enable sandbox inheritance, a child target must use exactly two App Sandbox entitlement keys:
com.apple.security.app-sandbox and com.apple.security.inherit . If you specify any other App Sandbox entitlement, the system aborts the child process. You can, however, confer other capabilities to a child process by way of iCloud and notification entitlements.
The main app in an Xcode project must never have a
YES value for the inherit entitlement.
To add the
inherit entitlement, edit the targetâs .entitlements property list file using the Xcode property list editor. Use the entitlement key shown in Table 4-9 with a value of <true/> .
Note: This property causes the child process to inherit only the static rights defined in the main appâs entitlements file, not any rights added to your sandbox after launch (such as PowerBox access to files).
If you need to provide access to files opened after launch, you must either pass the data to the helper or pass a bookmark to the child process. The bookmark need not be a security-scoped bookmark, but it can be, if desired.
If you are using other APIs to create child processes (such as
NSWorkspace ) and wish to have a shared container directory, you must use an app group.
Enabling Scripting of Other Apps
If your app needs to control another scriptable app, your app can use the scripting targets entitlement to request access to one or more of the scriptable appâs scripting access groups.
Note: Before you can use this entitlement, the scriptable app must provide scripting access groups. If it does not, you can still control the app, but you use a temporary exception entitlement instead. In some cases, you may use both
scripting-targets entitlement and a temporary entitlement together, to provide support across different versions of the OS. For more information, see Apple Event Temporary Exception.
The scripting target entitlement contains a dictionary where each entry has the target appâs code signing identifier as the key, and an array of scripting access groups as the value. Scripting access groups are identified by strings and are specific to an app. For example, the following entry would grant access to composing mail messages with Appleâs Mail app:
For more information about how to add scripting access groups to an app, watch WWDC 2012: Secure Automation Techniques in OS X and read the manual page for sdef .
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Do me a favor and look at your email inbox right now. Iâd be willing to bet that at least some of the emails arenât typical plain text emails; instead, theyâre nicely formatted messages that look more like a web page than just a bunch of words. These are HTML (HyperText Markup Language) emails that are usually designed to inform or entice you, with fancy graphics, photos, animations, and of course some text. As nice as these sound, Apple Mail isnât designed to let you create HTML emails; instead, it uses what is called RTF or ârich text formatâ. In todayâs tutorial, Iâll show you several ways to design an HTML email, then let you in on the secret of how to send those emails from the Mac Mail app.
Creating Your HTML Email
Let me repeat one point from that opening paragraph â thereâs no way to make an HTML-formatted email in Mail, which means youâll need to use some way of designing your email and generating the HTML file and any associated cascading style sheets (CSS). For those who have experience in coding HTML, you could just pop open your favorite text editor and design the page totally with text. Most of those reading this post will want an easier way to accomplish the task.
If youâre going to be emailing thousands of people on a regular basis, you donât want to use Mail to do this as youâll most likely end up having your Mail account put on spam blacklists! Instead, services like MailChimp or Constant Contact offer a way to design and send mass emails. Theyâre also usually quite expensive, but if you are sending those thousands of emails daily or weekly these services are well worth the cost.
(A typical HTML email, as viewed in Mac Mail.)
Mac HTML Editors
What we want to do is create an HTML file that can be opened on a Mac in Safari; if that goal is reached, then the same file can be sent from Mail. There are a number of web and email design apps available for Mac and Iâll list some here, but since not all email is read on a desktop device these days, youâll want to make sure that the app you use is capable of whatâs called âresponsive designâ. That means that it can create web pages that look good no matter what device youâre using to view them â a Mac, an iPhone or an iPad. Itâs also useful if you can use a âwhat you see is what you getâ (WYSIWYG) drag-and-drop editor that gives you a way to just drop elements like text, images, and buttons onto a blank page or template, then export an HTML file. Here are some well-rated Mac web design apps:
If youâre a designer you probably already have a subscription to Adobe Creative Cloud, and the companyâs Dreamweaver app is very well-suited to the task of designing responsive emails.
App To Read Html File On Mac Computer
Regardless of the app used to create the HTML file, youâll most likely end up with an exported file that contains the file in addition to a folder containing the images that were used in the email design. On your Mac, you can double-click that HTML file to open it in Safari and youâll see exactly what youâre going to be sending, images and all. However, if you tried to send that email at this point, your recipients would see well-styled text and buttons, but no images because theyâre on your Mac!
Youâll need to host those image files somewhere to ensure that Mail is able to grab them from a server and then display them in the email. If you already run a website, then itâs a relatively easy task to just create a hosting folder, place your email images in that folder, and then change the image links in your email HTML code to point to âhttps://mywebsite.com/images/myphoto.jpgâ instead of to the local â/images/myphoto.jpgâ file. If you donât have a place to host your photos, there are plenty of website hosting services that charge a monthly fee for a domain name and hosting. You then upload your files to the host via ftp, then change those image links in your email HTML. Thinking of hosting those files on a cloud service like Dropbox or iCloud? Neither of those services works for this purpose.
Remember that you can use your own Mac as a server, either with macOS Server (be sure to read our series on macOS Server) or MAMP. This takes a while to get everything set up, but if youâre planning on sending out the occasional HTML email to friends or business prospects, it can be a low-cost source of hosting image files.
Online Email Editors
This looks like an expensive proposition, especially if all you want to do is design and send an custom invitation to a few friends. Still, for small businesses or even the occasional personal HTML email, if you have a host for those images youâre well on your way. You probably noticed, though, that the Mac HTML editors arenât exactly inexpensive, so whatâs a good way to design an HTML email without that added expense? Use an online HTML email editor.
Bee is designed specifically for the purpose of creating responsive HTML emails. Whatâs really nice is that for the occasional one-off HTML email, you donât need an account nor do you need to pay a cent; just go to the Bee website, select Bee Free, and start designing by dragging and dropping elements (see screenshot below):
(Bee Free is an easy-to-use and free way to design HTML emails.)
Once youâve created your masterpiece, click the Save button in the top right corner of the Bee editor and youâre given the choice of downloading it (free) or saving it (requires an account). Download to your Mac, and youâll get a folder containing the HTML file as well as an âimagesâ folder containing the images in your email. Upload the images to your host, edit the HTML file to point to those files, and then test your HTML file by opening it in Safari. Broken image links â meaning that the link in your HTML file isnât correctly pointed to the image files â can ruin your whole day (see image below):
(A broken image link in an HTML email.)
Fix the broken link, then check the file again in Safari.
Other free online HTML email creation services include:
Html App For Pc
Each service provides a way to design HTML emails through a simple WYSIWYG editor, then download the completed HTML file. Regardless of which service you choose to use, be sure to check your file in Safari. When everything looks just the way you want it to be, itâs time to use the remarkably easy trick to send out the email in Apple Mail.
Sending the HTML Email in Apple Mail
After this lengthy process, youâd think that sending the HTML email in Apple Mail would be difficult as well. Wrong!
With your HTML email opened in Safari, choose Edit > Select All from the menu bar or press Command â A. This command highlights all of the HTML email on the screen, after which you need to copy the email using Edit > Copy or Command â C.
Navigate to Apple Mail and create a blank email, then click in the spot where youâd normally start typing your message. Instead, paste the HTML email you copied from Safari into that space using Edit > Paste or Command â V (see image below):
(An HTML email pasted into Apple Mail and ready to send.)
This method works regardless of how you created the HTML file. Just make sure youâve hosted your images somewhere, select the entire âweb pageâ youâve designed, copy it, and paste it into Apple Mail. The nice thing is that by hosting those images on a server, the formatted email complete with photos is actually quite small â the example above is 323 KB in size, even though the images that are used in it are well over 2 MB each.
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