Can I edit an iPad's host file?

问题

I doubt this is possible without extensive jail-breaking, but is it at all possible to edit the iPad's (or any iOS device's) hosts file?

回答1:

No. Apps can only modify files within the documents directory, within their own sandbox. This is for security, and ease of installing/uninstalling. So you could only do this on a jailbroken device.

回答2:

The previous answer is correct, but if the effect you are looking for is to redirect HTTP traffic for a domain to another IP there is a way.

Since it technically is not answering your question, I have asked and answered the question here:

How can I redirect HTTP requests made from an iPad?

回答3:

No, you can't change iPad's host file(without jailbreak), but can workaround.

Here is my scenario:

Mac OS X, with IP 192.168.2.1, running a web app
iPad, the device you would like to test the web app
Charles (for Mac), enables HTTP proxy for your iPad

I am going to test the web app running in my Mac via iPad, but I can't access directly to it.

The solution works for me:

Firstly, make sure that your server and iPad are in the same local network.
Then, set up Charles proxy, in the menu "Proxy > Proxy Settings...", fill in Port(mostly 8888) and toggle Enable transparent HTTP proxying.

Setup proxy setting in iPad.

Now you can visit your web app in iPad.

Of course you can use other proxy tools like Squid or Varnish in Linux, or fiddler in Wondows.

回答4:

The easiest way to do this is to run an iPad simulator using XCode and then add an entry in the hosts file (/etc/hosts) on the host system to point to your test site.

回答5:

I needed the same functionality, and doing jailbreak is no-no. One solution is to host yourself DNS server (MaraDNS), go to your wifi settings in ipad/phone, and add your custom DNS server there.

The whole process took me only 10 minutes, and it works!

1) Download MaraDNS

2) Run mkSecretTxt.exe as administrator

3) Modify mararc file, mine is:

ipv4_bind_addresses = "put your public IP Here"
timestamp_type = 2
random_seed_file = "secret.txt"

csv2 = {}
csv2["Simple.Example.com."] = "example.configuration"

Add file called "example.configuration" into the same folder where run_maradns.bat is.

4) Edit your example.configuration file:

Simple.Example.com. 10.10.13.13 ~

5) Disable all Firewalls (convenience)

6) Run file "run_maradns.bat"

7) There should be no errors.

8) Add your DNS server to list, as shown here: http://www.iphonehacks.com/2014/08/change-dns-iphone-ipad.html

9) Works!

回答6:

I would imagine you could do it by setting up a transparent proxy, using something like charles and re-direct traffic that way

回答7:

Yes, you can edit the iPad hosts file, but you need to be jailbroken. Once you've done that, download Cydia (app market), and get iFile. The hosts file is located within "/etc/hosts".

回答8:

I know it's been a while this has been posted, but with iOS 7.1, a few things have changed.

So far, if you are developing an App, you MUST have a valid SSL certificate recognized by Apple, otherwise you will get an error message on you iDevice. No more self-signed certificates. See here a list:

http://support.apple.com/kb/ht5012

Additionally, if you are here, it means that you are trying to make you iDevice resolve a name (to your https server), on a test or development environment.

Instead of using squid, which is a great application, you could simply run a very basic DNS server like dnsmasq. It will use your hosts file as a first line of name resolution, so, you can basically fool your iDevice there, saying that www.blah.com is 192.168.10.10.

The configuration file is as simple as 3 to 4 lines, and you can even configure its internal DHCP server if you want.

Here is mine:

listen-address=192.168.10.35

domain-needed

bogus-priv

no-dhcp-interface=eth0

local=/localnet/

Of course you have to configure networking on your iDevice to use that DNS (192.168.10.35 in my case), or just start using DHCP from that server anyway, after properly configured.

Additionally, if dnsmasq cannot resolve the name internally, it uses your regular DNS server (like 8.8.8.8) to resolve it for you. VERY simple, elegant, and solved my problems with iDevice App installation in-house.

By the way, solves many name resolution problems with regular macs (OS X) as well.

Now, my rant: bloody Apple. Making a device safe should not include castrating the operating system or the developers.

回答9:

If you have the freedom to choose the hostname, then you can just add your host to a dynanmic DNS service, like dyndns.org. Then you can rely on the iPad's normal resolution mechanisms to resolve the address.