Aleksander Morgado
4fe464f5f7
When the GCancellable is added to the GTask, we can use a single method call to check for the task being cancelled, and complete it right away if so. This patch also clears up the logic in the Novatel plugin, where the code was trying to return "TRUE" when the task was cancelled, but wouldn't work as the check-cancellable flag in the GTask is TRUE by default (i.e. when completing the GTask, if it was cancelled, a G_IO_ERROR_CANCELLED would be returned by default, regardless of any other return value set). This patch also introduces a small variation of the logic in the Cinterion plugin: instead of running SWWAN=0 before completing the async action, the command is now sent just after completion of the async action. This shouldn't be an issue, as the SWWAN result itself is ignored.
ModemManager. ModemManager provides a unified high level API for communicating with mobile broadband modems, regardless of the protocol used to communicate with the actual device (Generic AT, vendor-specific AT, QCDM, QMI, MBIM...). Using. ModemManager is a system daemon and is not meant to be used directly from the command line. However, since it provides a DBus API, it is possible to use 'dbus-send' commands or the new 'mmcli' command line interface to control it from the terminal. The devices are queried from udev and automatically updated based on hardware events, although a manual re-scan can also be requested to look for RS232 modems. Implementation. ModemManager is a DBus system bus activated service (meaning it's started automatically when a request arrives). It is written in C, using glib and gio. Several GInterfaces specify different features that the modems support, including the generic MMIfaceModem3gpp and MMIfaceModemCdma which provice basic operations for 3GPP (GSM, UMTS, LTE) or CDMA (CDMA1x, EV-DO) modems. If a given feature is not available in the modem, the specific interface will not be exported in DBus. Plugins. Plugins are loaded on startup, and must implement the MMPlugin interface. It consists of a couple of methods which tell the daemon whether the plugin supports a port and to create custom MMBroadbandModem implementations. It most likely makes sense to derive custom modem implementations from one of the generic classes and just add (or override) operations which are not standard. There are multiple fully working plugins in the plugins/ directory that can be used as an example for writing new plugins. Writing new plugins is highly encouraged! The plugin API is open for changes, so if you're writing a plugin and need to add or change some public method, feel free to suggest it! License. The ModemManager and mmcli binaries are both GPLv2+. The libmm-glib library is LGPLv2+.