First commit with working implementation

.gitignore

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+# Custom
+modem_pin.txt
+*.log
+*.pyc
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+.hypothesis/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# dotenv
+.env
+
+# virtualenv
+.venv
+venv/
+ENV/
+
+# Spyder project settings
+.spyderproject
+
+# Rope project settings
+.ropeproject

README.md

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+# mbim-sms-sender
+
+A tool for sending SMS through a modem connected to MBIM/AT/other standard
+interface, through ModemManager using D-Bus.
+
+## Usage:
+
+**IMPORTANT:** If your SIM card has a PIN set up, insert it into `modem_pin.txt` file.
+
+```
+import sms_functions
+sms_functions.send_sms([ '+420608123456', '+420775123456' ], 'Testovaci
+textova zprava')
+```
+

send_sms.py

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+#!/usr/bin/python3
+
+import logging
+import os
+from pydbus import SystemBus
+from gi.repository import GLib
+
+def assemble_sms():
+    str_list = []
+    str_list.append("Observium {}\n".format(os.environ.get('OBSERVIUM_TITLE')))
+    str_list.append("{} [{}]\n".format(os.environ.get('OBSERVIUM_ENTITY_NAME'), os.environ.get('OBSERVIUM_ENTITY_DESCRIPTION')))
+    str_list.append("{}".format(os.environ.get('OBSERVIUM_DURATION')))
+    return ''.join(str_list)
+
+# Setup logging
+logfile = "/opt/sms/sms.log"
+FORMAT = '%(asctime)-15s %(message)s'
+logging.basicConfig(format=FORMAT,filename=logfile,level=10)
+logger = logging.getLogger('observiumsms')
+
+# Path to file with SMS numbers
+emergency_file = "/opt/sms/emergency_numbers.txt"
+
+# Assemble SMS
+smsstring = assemble_sms()
+logger.info("Sending SMS: %s", smsstring)
+
+# Contact ModemManager, unlock SIM and send SMS to emergency numbers
+with SystemBus() as bus:
+    mm = bus.get('.ModemManager1')
+    modems = mm.GetManagedObjects()
+    modem_path = list(modems.keys())[0]
+
+    logger.info("Going with %s", modem_path)
+    modem = bus.get(".ModemManager1", modem_path)
+    
+    sim_path = modem.Sim
+    if not sim_path:
+        logger.critical("No SIM")
+        quit()
+
+    # unlock SIM, if not alreadY
+    props = modem.GetStatus()
+    print(props)
+    if props and props['state'] == 2:
+        logger.info("Trying to unlock %s", sim_path)
+        sim = bus.get('.ModemManager1', sim_path)
+        sim.SendPin("1234", timeout=10000)
+        props = modem.GetStatus()
+        if props and props['state'] == 2:
+            logger.critical("Wrong PIN!")
+            quit()
+    
+    # enable the modem
+    modem.Enable(True)
+
+    # test sending SMS
+    modem_msg = modem['org.freedesktop.ModemManager1.Modem.Messaging']
+    smses = modem_msg.List()
+
+    print(modem.GetStatus()['signal-quality'])
+
+    raise Exception('TODO phone numbers')
+
+    for line in fnums:
+        line = line.strip()
+        if not line:
+            continue
+
+        logger.info("Creating new SMS for %s", line)
+        smstext = GLib.Variant('s', smsstring)
+        smsnumber = GLib.Variant('s', line)
+
+        dictsms = { 'text': smstext, 'number': smsnumber }
+
+        msgpath = modem_msg.Create(dictsms)
+        logger.info("Created new SMS %s", msgpath)
+
+        logger.info("Sending SMS %s", msgpath)
+        sms = bus.get(".ModemManager1", msgpath)
+        sms.Send(timeout=30000)
+        
+        logger.info("SMS %s state %s", msgpath, sms.State)

sms_functions.py

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+
+import logging
+import os
+from pydbus import SystemBus
+from gi.repository import GLib
+
+
+# Setup logging
+logfile = "/opt/sms/sms.log"
+FORMAT = '%(asctime)-15s %(message)s'
+logging.basicConfig(format=FORMAT,filename=logfile,level=10)
+logger = logging.getLogger('observiumsms')
+
+class ModemManagerError(Exception):
+    def __init__(self, value):
+        self.value = value
+    def __str__(self):
+        return repr(self.value)
+		
+class SIMError(ModemManagerError):
+    def __init__(self, value):
+        self.value = value
+    def __str__(self):
+        return repr(self.value)
+
+def assemble_sms():
+    str_list = []
+    str_list.append("Observium {}\n".format(os.environ.get('OBSERVIUM_TITLE')))
+    str_list.append("{} [{}]\n".format(os.environ.get('OBSERVIUM_ENTITY_NAME'), os.environ.get('OBSERVIUM_ENTITY_DESCRIPTION')))
+    str_list.append("{}".format(os.environ.get('OBSERVIUM_DURATION')))
+    return ''.join(str_list)
+
+def get_modem():
+    # Contact ModemManager, unlock SIM and send SMS to emergency numbers
+    with SystemBus() as bus:
+        mm = bus.get('.ModemManager1')
+        modems = mm.GetManagedObjects()
+        if not modems or len(modems) == 0:
+           raise ModemManagerError('No modems found') 
+        modem_path = list(modems.keys())[0]
+    
+        logger.info("Going with %s", modem_path)
+        modem = bus.get(".ModemManager1", modem_path)
+        return modem
+
+def unlock_sim(modem):
+    sim_path = modem.Sim
+    if not sim_path:
+        raise SIMError('No SIM card found') 
+            
+    # unlock SIM, if not alreadY
+    props = modem.GetStatus()
+    print(props)
+    if props and props['state'] == 2:
+        logger.info("Trying to unlock %s", sim_path)
+        with SystemBus() as bus:
+            sim = bus.get('.ModemManager1', sim_path)
+            sim.SendPin("1234", timeout=10000)
+            props = modem.GetStatus()
+            if props and props['state'] == 2:
+                remaining_attempts = modem.UnlockRetries
+                print(remaining_attempts)
+                raise SIMError('Wrong PIN!')
+
+def send_sms(recipients, smsstring):
+    
+    # Assemble SMS
+    logger.info("Sending SMS: %s", smsstring)
+    
+    # Get modem, unlock SIM
+    modem = get_modem()
+    unlock_sim(modem)
+    
+    # enable the modem
+    modem.Enable(True)
+    
+    # test sending SMS
+    modem_msg = modem['org.freedesktop.ModemManager1.Modem.Messaging']
+    smses = modem_msg.List()
+
+    print(modem.GetStatus()['signal-quality'])
+
+    for line in recipients:
+        line = line.strip()
+        if not line:
+                continue
+
+        logger.info("Creating new SMS for %s", line)
+        smstext = GLib.Variant('s', smsstring)
+        smsnumber = GLib.Variant('s', line)
+        
+        dictsms = { 'text': smstext, 'number': smsnumber }
+
+        msgpath = modem_msg.Create(dictsms)
+        logger.info("Created new SMS %s", msgpath)
+
+        logger.info("Sending SMS %s", msgpath)
+        with SystemBus() as bus:
+            sms = bus.get(".ModemManager1", msgpath)
+            sms.Send(timeout=30000)
+            
+            logger.info("SMS %s state %s", msgpath, sms.State)
+    
+    

test_sms.py

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+#!/usr/bin/python3
+
+import os
+
+ftest = open("/opt/sms/sms.log", "w")
+ftest.write("Observium {}\n".format(os.environ.get('OBSERVIUM_TITLE')))
+ftest.write("{} [{}]\n".format(os.environ.get('OBSERVIUM_ENTITY_NAME'), os.environ.get('OBSERVIUM_ENTITY_DESCRIPTION')))
+ftest.write("{}".format(os.environ.get('OBSERVIUM_DURATION')))
+ftest.close()
+