openpty && security server

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Created Dec ’23

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hi, I am using the openpty function in my code to run an interactive command, for example, "hdiutil convert -format UDRO /tmp/myFileName.sparsebundle -o ./test". The file myFileName.sparsebundle is an encrypted disk with a password. When running this command, it triggers the security server and a password input dialog box pops up. I don't want this dialog box to appear, and I want to provide the password through the fd_master returned by openpty. How can I achieve this?

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Answer 1

DTS Engineer OP

Apple

Dec ’23

Pseudo terminals are a tricky, especially for tasks like this. Fortunately, most command-line tools that take passwords have an alternative means to supply that password. In the case of hdiutil, that’s the -stdinpass. See the hdiutil man page for the details.

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