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modem-helpers: Add helpers to parse channel lists

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`CSCB` has the form

```
CSCB: [0|1],"<channel-list>","<data-coding-scheme>"
```

If the first parameter is `0` this specifies the accepted types if `1`
it specifies rejected.

So far seen in the wild were CSCB strings with accepted types only and a
coding scheme of "" so this is what we handle for the moment.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
This commit is contained in:
Guido Günther
2025-03-28 20:53:52 +00:00
committed by Dan Williams
parent 0c20d13b30
commit d8135be6e2
3 changed files with 237 additions and 0 deletions
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src/tests/test-modem-helpers.c
+96
View File
@@ -4277,6 +4277,100 @@ test_ccwa_response (void)
common_test_ccwa_response (test_ccwa[i].response, test_ccwa[i].expected_status, test_ccwa[i].expected_error);
}
/*****************************************************************************/
/* Test +CSCB channel lists */
typedef struct {
const gchar *response;
const MMCellBroadcastChannels *channels;
guint len;
gboolean error;
} TestCscb;
static void
common_test_cscb_response (const gchar *response, TestCscb *expected)
{
GError *error = NULL;
GArray *result;
g_debug ("Testing '%s'", response);
result = mm_3gpp_parse_cscb_response (response, &error);
if (expected->error) {
g_assert (!result);
g_assert_nonnull (error);
g_error_free (error);
} else {
guint i;
g_assert_no_error (error);
g_assert (result);
g_assert_cmpint (result->len, ==, expected->len);
for (i = 0; i < expected->len; i++) {
MMCellBroadcastChannels ch = g_array_index (result, MMCellBroadcastChannels, i);
g_assert_cmpuint (ch.start, ==, expected->channels[i].start);
g_assert_cmpuint (ch.end, ==, expected->channels[i].end);
}
}
}
static const MMCellBroadcastChannels cscb_one_channel[] = {
{ .start = 0, .end = 0 },
};
static const MMCellBroadcastChannels cscb_all_channels[] = {
{ .start = 0, .end = 65535 },
};
static const MMCellBroadcastChannels cscb_interval_channels[] = {
{ .start = 0, .end = 1 },
{ .start = 100, .end = 200 },
};
static const MMCellBroadcastChannels cscb_dell5821e_channels[] = {
{ .start = 4383, .end = 4383 },
{ .start = 4400, .end = 4400 },
{ .start = 4370, .end = 4370 },
{ .start = 4371, .end = 4378 },
{ .start = 4384, .end = 4391 },
{ .start = 4396, .end = 4397 },
};
static TestCscb test_cscb[] = {
{ "\r\n+CSCB: 0, \"0\",\"\"\r\n\r\nOK\r\n", /* one channel */
cscb_one_channel,
G_N_ELEMENTS (cscb_all_channels),
FALSE },
{ "+CSCB: 0,\"0-65535\",\"\"\r\n", /* all channels */
cscb_all_channels,
G_N_ELEMENTS (cscb_all_channels),
FALSE },
{ "+CSCB: 0,\"0-1,100-200\",\"\"\r\n", /* intervals */
cscb_interval_channels,
G_N_ELEMENTS (cscb_interval_channels),
FALSE },
/* Dell 5821e/T77W968 defaults */
{ "+CSCB: 0, \"4383,4400,4370,4371-4378,4384-4391,4396-4397\",\"\"",
cscb_dell5821e_channels,
G_N_ELEMENTS (cscb_dell5821e_channels),
FALSE },
{ "+CSCB: 0,\"0-\",\"\"\r\n", /* broken interval */
NULL,
0,
TRUE },
};
static void
test_cscb_response (void)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (test_cscb); i++)
common_test_cscb_response (test_cscb[i].response, &test_cscb[i]);
}
/*****************************************************************************/
/* Test +CLCC URCs */
@@ -4994,6 +5088,8 @@ int main (int argc, char **argv)
g_test_suite_add (suite, TESTCASE (test_ccwa_indication, NULL));
g_test_suite_add (suite, TESTCASE (test_ccwa_response, NULL));
g_test_suite_add (suite, TESTCASE (test_cscb_response, NULL));
g_test_suite_add (suite, TESTCASE (test_clcc_response_empty, NULL));
g_test_suite_add (suite, TESTCASE (test_clcc_response_single, NULL));
g_test_suite_add (suite, TESTCASE (test_clcc_response_single_long, NULL));