rawgpsd: fix loading assistance data (#28381)

* rawgpsd: fix loading assistance data

* needs a specific name

* cleanup

* more logging

---------

Co-authored-by: Comma Device <device@comma.ai>
old-commit-hash: 04556652dc

system/sensord/rawgps/rawgpsd.py

@@ -110,36 +110,52 @@ def gps_enabled() -> bool:
     raise Exception("failed to execute QGPS mmcli command") from exc
 
 def download_and_inject_assistance():
-  assist_data_file = '/tmp/xtra3grc.bin' 
+  assist_data_file = '/tmp/xtra3grc.bin'
   assistance_url = 'http://xtrapath3.izatcloud.net/xtra3grc.bin'
+
   try:
-    c = pycurl.Curl() 
-    c.setopt(c.URL, assistance_url)
-    c.setopt(c.NOBODY, 1)
-    c.setopt(pycurl.CONNECTTIMEOUT, 2)
-    c.perform()
-    c.close()
-    bytes_n = c.getinfo(c.CONTENT_LENGTH_DOWNLOAD)
-    if bytes_n > 1e5:
-      cloudlog.exception("Qcom assistance data larger than expected")
-      return
-    with open(assist_data_file, "wb") as fp:
+    # download assistance
+    try:
       c = pycurl.Curl()
-      c.setopt(pycurl.URL, assistance_url)
-      c.setopt(pycurl.CONNECTTIMEOUT, 5)
-
-      c.setopt(pycurl.WRITEDATA, fp)
+      c.setopt(c.URL, assistance_url)
+      c.setopt(c.NOBODY, 1)
+      c.setopt(pycurl.CONNECTTIMEOUT, 2)
       c.perform()
+      bytes_n = c.getinfo(c.CONTENT_LENGTH_DOWNLOAD)
       c.close()
-  except pycurl.error as e:
-    cloudlog.exception(f'Failed to download assistance file with error: {e}')
-  if os.path.isfile(assist_data_file):
+      if bytes_n > 1e5:
+        cloudlog.error("Qcom assistance data larger than expected")
+        return
+
+      with open(assist_data_file, 'wb') as fp:
+        c = pycurl.Curl()
+        c.setopt(pycurl.URL, assistance_url)
+        c.setopt(pycurl.CONNECTTIMEOUT, 5)
+
+        c.setopt(pycurl.WRITEDATA, fp)
+        c.perform()
+        c.close()
+    except pycurl.error:
+      cloudlog.exception("Failed to download assistance file")
+      return
+
+    # inject into module
     try:
-      subprocess.check_call(f"mmcli -m any --timeout 30 --location-inject-assistance-data={assist_data_file}", shell=True)
-    except subprocess.CalledProcessError:
-      cloudlog.exception("rawgps.mmcli_command_failed")
-  if os.path.isfile(assist_data_file):
-    os.remove(assist_data_file)
+      cmd = f"mmcli -m any --timeout 30 --location-inject-assistance-data={assist_data_file}"
+      subprocess.check_output(cmd, stderr=subprocess.PIPE, shell=True)
+      cloudlog.info("successfully loaded assistance data")
+    except subprocess.CalledProcessError as e:
+      cloudlog.event(
+        "rawgps.assistance_loading_failed",
+        error=True,
+        cmd=e.cmd,
+        output=e.output,
+        returncode=e.returncode
+      )
+  finally:
+    if os.path.exists(assist_data_file):
+      os.remove(assist_data_file)
+
 
 def setup_quectel(diag: ModemDiag):
   # enable OEMDRE in the NV