On iOS, the log outputter uses Apple's Unified Logging System, but on
Mac OS, the logger uses the older Syslog API so that it will compile on
platforms older than macOS 10.13 High Sierra.
The daemon API is built as a Swift module called ServalDNA.
The new CliContext class allows easy implementation of CLI output using
Swift code. The new CliContextFile subclass is the obvious first
implementation, equivalent to cli_stdio.c. The 'servaldswift'
executable now uses CliContextFile to print its CLI output to standard
output.
The new delegated log output support constructs each log line in a
buffer and prints it by calling the delegate's 'print' function at
end-of-line. The 'servaldswift' executable now provides a log output
delegate in Swift that simply prints to standard error, replacing
log_output_console.o, which is omitted from its link.
Add a swift-client-api subdirectory containing a Swift source package
and a Makefile.in that compiles it into the "ServalClient" Swift module
using the Swift package manager. The Swift API contains the following
classes:
- ServalKeyring provides the operations: add, remove, set, list
- AbstractId and its specialisation SubscriberId, already in near-final
form, are data types for SID and the like
- ServalRestfulClient (internal) uses an HTTP client to access the
Serval DNA RESTful interface
Improve the REST /keyring/set operation to only alter the DID or Name if
the corresponding query parameter is supplied. Modify the internal
keyring_set_did() function to only assign the DID or Name if the
corresponding parameter is not a null pointer.
The configure script ensures that the Swift build target version is
10.10 or later when compiling for Mac OS-X, so that the package manager
will succeed.
Add autoconf macros for the Swift package manager.
