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modem-helpers: fix parsing of CREG/CGREG/CEREG responses

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The format of CREG/CGREG/CEREG responses is not very precisely defined
in or strictly enforced by the 3GPP specifications. That leads to the
fact that some modems put leading zeros in integer type fields (e.g.
<n>, <stat>, <AcT>), and not all modems put double quotes around string
type fields (e.g. <lac>, <ci>) in those C*REG responses.

For example, 0001 can be a valid value for both <stat> and <lac>. The
original C*REG parsing code in ModemManager could potentially interpret
'+CREG: <stat>,<lac>,<ci>,<AcT>' as '+CREG: <n>,<stat>,<lac>,<ci>'. This
patch addresses this issue by refining the regular expressions returned
by mm_3gpp_creg_regex_get() with the following assumptions:

1. If a modem puts leading zeros in integer type fields, it puts double
   quotes around string type fields.
2. If a modem omits double quotes around string type fields, it does not
   put leading zeros in integer type fields.
This commit is contained in:
Ben Chan
2013-07-31 23:07:52 -07:00
committed by Dan Williams
parent 755c61a2ff
commit ffac6f17b5
2 changed files with 100 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
src/tests/test-modem-helpers.c
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@@ -840,11 +840,51 @@ test_creg2_iridium_solicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "+CREG:002,001,\"18d8\",\"ffff\"";
const CregResult result = { 1, 0x18D8, 0xFFFF, MM_MODEM_ACCESS_TECHNOLOGY_UNKNOWN, 4, FALSE, FALSE };
const CregResult result = { 1, 0x18D8, 0xFFFF, MM_MODEM_ACCESS_TECHNOLOGY_UNKNOWN, 5, FALSE, FALSE };
test_creg_match ("Iridium, CREG=2", TRUE, reply, data, &result);
}
static void
test_creg2_no_leading_zeros_solicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "+CREG:2,1,0001,0010";
const CregResult result = { 1, 0x0001, 0x0010, MM_MODEM_ACCESS_TECHNOLOGY_UNKNOWN, 4, FALSE, FALSE };
test_creg_match ("solicited CREG=2 with no leading zeros in integer fields", TRUE, reply, data, &result);
}
static void
test_creg2_leading_zeros_solicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "+CREG:002,001,\"0001\",\"0010\"";
const CregResult result = { 1, 0x0001, 0x0010, MM_MODEM_ACCESS_TECHNOLOGY_UNKNOWN, 5, FALSE, FALSE };
test_creg_match ("solicited CREG=2 with leading zeros in integer fields", TRUE, reply, data, &result);
}
static void
test_creg2_no_leading_zeros_unsolicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CREG: 1,0001,0010,0\r\n";
const CregResult result = { 1, 0x0001, 0x0010, MM_MODEM_ACCESS_TECHNOLOGY_GSM, 6, FALSE, FALSE };
test_creg_match ("unsolicited CREG=2 with no leading zeros in integer fields", FALSE, reply, data, &result);
}
static void
test_creg2_leading_zeros_unsolicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CREG: 001,\"0001\",\"0010\",000\r\n";
const CregResult result = { 1, 0x0001, 0x0010, MM_MODEM_ACCESS_TECHNOLOGY_GSM, 7, FALSE, FALSE };
test_creg_match ("unsolicited CREG=2 with leading zeros in integer fields", FALSE, reply, data, &result);
}
static void
test_cgreg1_solicited (void *f, gpointer d)
{
@@ -870,7 +910,7 @@ test_cgreg2_f3607gw_solicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "+CGREG: 2,1,\"8BE3\",\"00002B5D\",3";
const CregResult result = { 1, 0x8BE3, 0x2B5D, MM_MODEM_ACCESS_TECHNOLOGY_EDGE , 6, TRUE, FALSE };
const CregResult result = { 1, 0x8BE3, 0x2B5D, MM_MODEM_ACCESS_TECHNOLOGY_EDGE, 8, TRUE, FALSE };
test_creg_match ("Ericsson F3607gw CGREG=2", TRUE, reply, data, &result);
}
@@ -880,7 +920,7 @@ test_cgreg2_f3607gw_unsolicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CGREG: 1,\"8BE3\",\"00002B5D\",3\r\n";
const CregResult result = { 1, 0x8BE3, 0x2B5D, MM_MODEM_ACCESS_TECHNOLOGY_EDGE , 5, TRUE, FALSE };
const CregResult result = { 1, 0x8BE3, 0x2B5D, MM_MODEM_ACCESS_TECHNOLOGY_EDGE, 6, TRUE, FALSE };
test_creg_match ("Ericsson F3607gw CGREG=2", FALSE, reply, data, &result);
}
@@ -900,7 +940,7 @@ test_cgreg2_md400_unsolicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CGREG: 5,\"0502\",\"0404736D\",2\r\n";
const CregResult result = { 5, 0x0502, 0x0404736D, MM_MODEM_ACCESS_TECHNOLOGY_UMTS, 5, TRUE, FALSE };
const CregResult result = { 5, 0x0502, 0x0404736D, MM_MODEM_ACCESS_TECHNOLOGY_UMTS, 6, TRUE, FALSE };
test_creg_match ("Sony-Ericsson MD400 CGREG=2", FALSE, reply, data, &result);
}
@@ -941,7 +981,7 @@ test_creg2_s8500_wave_unsolicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CREG: 2,1,000B,2816, B, C2816\r\n";
const CregResult result = { 1, 0x000B, 0x2816, MM_MODEM_ACCESS_TECHNOLOGY_GSM, 7, FALSE, FALSE };
const CregResult result = { 1, 0x000B, 0x2816, MM_MODEM_ACCESS_TECHNOLOGY_GSM, 9, FALSE, FALSE };
test_creg_match ("Samsung Wave S8500 CREG=2", FALSE, reply, data, &result);
}
@@ -961,7 +1001,7 @@ test_cgreg2_unsolicited_with_rac (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CGREG: 1,\"1422\",\"00000142\",3,\"00\"\r\n";
const CregResult result = { 1, 0x1422, 0x0142, MM_MODEM_ACCESS_TECHNOLOGY_EDGE, 8, TRUE, FALSE };
const CregResult result = { 1, 0x1422, 0x0142, MM_MODEM_ACCESS_TECHNOLOGY_EDGE, 10, TRUE, FALSE };
test_creg_match ("CGREG=2 with RAC", FALSE, reply, data, &result);
}
@@ -991,7 +1031,7 @@ test_cereg2_solicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CEREG: 2,1, 1F00, 79D903 ,7\r\n";
const CregResult result = { 1, 0x1F00, 0x79D903, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 6, FALSE, TRUE };
const CregResult result = { 1, 0x1F00, 0x79D903, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 8, FALSE, TRUE };
test_creg_match ("CEREG=2", TRUE, reply, data, &result);
}
@@ -1001,17 +1041,37 @@ test_cereg2_unsolicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CEREG: 1, 1F00, 79D903 ,7\r\n";
const CregResult result = { 1, 0x1F00, 0x79D903, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 5, FALSE, TRUE };
const CregResult result = { 1, 0x1F00, 0x79D903, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 6, FALSE, TRUE };
test_creg_match ("CEREG=2", FALSE, reply, data, &result);
}
static void
test_cereg2_altair_lte_solicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CEREG: 1, 2, 0001, 00000100, 7\r\n";
const CregResult result = { 2, 0x0001, 0x00000100, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 8, FALSE, TRUE };
test_creg_match ("Altair LTE CEREG=2", FALSE, reply, data, &result);
}
static void
test_cereg2_altair_lte_unsolicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CEREG: 2, 0001, 00000100, 7\r\n";
const CregResult result = { 2, 0x0001, 0x00000100, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 6, FALSE, TRUE };
test_creg_match ("Altair LTE CEREG=2", FALSE, reply, data, &result);
}
static void
test_cereg2_novatel_lte_solicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CEREG: 2,1, 1F00, 20 ,79D903 ,7\r\n";
const CregResult result = { 1, 0x1F00, 0x79D903, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 10, FALSE, TRUE };
const CregResult result = { 1, 0x1F00, 0x79D903, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 12, FALSE, TRUE };
test_creg_match ("Novatel LTE E362 CEREG=2", TRUE, reply, data, &result);
}
@@ -1021,7 +1081,7 @@ test_cereg2_novatel_lte_unsolicited (void *f, gpointer d)
{
RegTestData *data = (RegTestData *) d;
const char *reply = "\r\n+CEREG: 1, 1F00, 20 ,79D903 ,7\r\n";
const CregResult result = { 1, 0x1F00, 0x79D903, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 9, FALSE, TRUE };
const CregResult result = { 1, 0x1F00, 0x79D903, MM_MODEM_ACCESS_TECHNOLOGY_LTE, 11, FALSE, TRUE };
test_creg_match ("Novatel LTE E362 CEREG=2", FALSE, reply, data, &result);
}
@@ -2222,6 +2282,10 @@ int main (int argc, char **argv)
g_test_suite_add (suite, TESTCASE (test_creg2_s8500_wave_unsolicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_creg2_gobi_weird_solicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_creg2_iridium_solicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_creg2_no_leading_zeros_solicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_creg2_leading_zeros_solicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_creg2_no_leading_zeros_unsolicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_creg2_leading_zeros_unsolicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_cgreg1_solicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_cgreg1_unsolicited, reg_data));
@@ -2235,6 +2299,8 @@ int main (int argc, char **argv)
g_test_suite_add (suite, TESTCASE (test_cereg1_unsolicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_cereg2_solicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_cereg2_unsolicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_cereg2_altair_lte_solicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_cereg2_altair_lte_unsolicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_cereg2_novatel_lte_solicited, reg_data));
g_test_suite_add (suite, TESTCASE (test_cereg2_novatel_lte_unsolicited, reg_data));