For such entries the archive is downloaded to {tmp}\_isetup\<randomdir>\<destname> using a TDownloadWizardPage, as the first step of PrepareToInstall. Supports verification.
On success the entries' SourceFilename is updated to the temp file, the download flag is removed and also DestName and verification. Áfter that the rest (PreviousInstallCompleted, RegisterResourcesWithRestartManager, and installation) works normally and required no changes.
On error the problem is displayed by the ready page. Also didn't require changes, except for an extract on BaseName display.
Todo:
-Rename CodeDownloadFiles.iss since there's no [Code] in it anymore.
-Offer Abort/Retry when a download fails? Or even Ignore somehow?
-Let the user choose if it should show BaseNames or URLs while downloading with a new directive? Both for archives and files.
-Document
Todo:
-Handle username + password
-Add param for .issig url, like IssigSource? Now it requires a second entry
-Doc
-Allow download+extractarchive? I suppose the download part would need to be integrated differently since it first would need to download (all?) the archive(s) to {tmp} using CreateDownloadPage. Hooking up the download steam to the 7-Zip instream wouldn't work since it needs non-sequential access.
Stored as a bitmask in an array of bytes using type AnsiString. Example: if the length is 2 and the first bit of both bytes are set and the others arent then the allowed keys are the ones with index 0 and index 8. So the 1st and 9th key.
If only the 1st and 9th key are allowed but there are many more keys, it still uses a length of 2. But if a 17th key is allowed then it uses a length of 3, even if no other keys are allowed. Etc.
Todo:
-Use a single random base nonce for all files
-Remove/replace various iscrypt use in .iss scripts
-Delete iscrypt.dll on updates
-Update help & whatsnew & web
-Rename TSetupSalt/TSetupNonce?
