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-rw-r--r--src/ppm/modemproxy.py8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/ppm/modemproxy.py b/src/ppm/modemproxy.py
index 08d8015..d81f32b 100644
--- a/src/ppm/modemproxy.py
+++ b/src/ppm/modemproxy.py
@@ -20,6 +20,7 @@ from gi.repository import GObject
from gi.repository import GLib
from gi.repository import Gio
+import re
class ModemError(Exception):
def __init__(self, msg):
@@ -49,6 +50,8 @@ class ModemManagerProxy(GObject.GObject):
MM_DBUS_TIMEOUT = 5000
MM_DBUS_FLAGS = (Gio.DBusProxyFlags.DO_NOT_LOAD_PROPERTIES |
Gio.DBusProxyFlags.DO_NOT_CONNECT_SIGNALS)
+ # IMSIs are 14 or 15 digits
+ IMSI_RE = r'\d{14,15}'
__gsignals__ = {
# Emitted when a request to MM starts
@@ -136,9 +139,12 @@ class ModemManagerProxy(GObject.GObject):
self.MM_DBUS_INTERFACE_MODEM_GSM_CARD,
None)
try:
- return card.GetImsi()
+ imsi = card.GetImsi()
except Exception as msg:
raise ModemError("Getting IMSI failed: %s" % msg)
+ if not re.match(self.IMSI_RE, imsi):
+ raise ModemError("%s is not a valid imsi" % imsi)
+ return imsi
def get_network_id(self):
imsi = self.get_imsi()