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Merge pull request #15477 from davidalo/fix-sms
SMS: Increase timeout for send and get. Fix text SMS parsing when CRLF is contained in the text.
2 parents 945c3de + 9e7e22d commit 20340d7

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5 files changed

+94
-4
lines changed

5 files changed

+94
-4
lines changed

‎connectivity/cellular/include/cellular/framework/API/ATHandler.h

+13
Original file line numberDiff line numberDiff line change
@@ -318,6 +318,13 @@ class ATHandler {
318318
*/
319319
void skip_param(ssize_t len, uint32_t count);
320320

321+
/** Consumes the given length from the reading buffer even if the stop tag has been found
322+
*
323+
* @param len length to be consumed from reading buffer
324+
* @param count number of parameters to be skipped
325+
*/
326+
void skip_param_bytes(ssize_t len, uint32_t count);
327+
321328
/** Reads given number of bytes from receiving buffer without checking any subparameter delimiters, such as comma.
322329
*
323330
* @param buf output buffer for the read
@@ -408,6 +415,12 @@ class ATHandler {
408415
*/
409416
bool consume_to_stop_tag();
410417

418+
/** Consumes the received content until current stop tag is found even if stop tag has been found previously
419+
*
420+
* @return true if stop tag is found, false otherwise
421+
*/
422+
bool consume_to_stop_tag_even_found();
423+
411424
/** Return the last 3GPP error code.
412425
* @return last 3GPP error code
413426
*/

‎connectivity/cellular/source/framework/AT/AT_CellularSMS.cpp

+22-2
Original file line numberDiff line numberDiff line change
@@ -420,6 +420,7 @@ nsapi_size_or_error_t AT_CellularSMS::send_sms(const char *phone_number, const c
420420
}
421421

422422
_at.lock();
423+
_at.set_at_timeout(10s);
423424

424425
int write_size = 0;
425426

@@ -437,6 +438,7 @@ nsapi_size_or_error_t AT_CellularSMS::send_sms(const char *phone_number, const c
437438
// sending can be cancelled by giving <ESC> character (IRA 27).
438439
_at.cmd_start(ESC);
439440
_at.cmd_stop();
441+
_at.restore_at_timeout();
440442
_at.unlock();
441443
return write_size;
442444
}
@@ -482,6 +484,7 @@ nsapi_size_or_error_t AT_CellularSMS::send_sms(const char *phone_number, const c
482484
pdu_str = create_pdu(phone_number, message + i * concatenated_sms_length, pdu_len,
483485
sms_count, i + 1, header_len);
484486
if (!pdu_str) {
487+
_at.restore_at_timeout();
485488
_at.unlock();
486489
return NSAPI_ERROR_NO_MEMORY;
487490
}
@@ -509,6 +512,7 @@ nsapi_size_or_error_t AT_CellularSMS::send_sms(const char *phone_number, const c
509512
// sending can be cancelled by giving <ESC> character (IRA 27).
510513
_at.cmd_start(ESC);
511514
_at.cmd_stop();
515+
_at.restore_at_timeout();
512516
_at.unlock();
513517
delete [] pdu_str;
514518
return msg_write_len;
@@ -523,13 +527,15 @@ nsapi_size_or_error_t AT_CellularSMS::send_sms(const char *phone_number, const c
523527
delete [] pdu_str;
524528
remaining_len -= concatenated_sms_length;
525529
if (_at.get_last_error() != NSAPI_ERROR_OK) {
530+
_at.restore_at_timeout();
526531
return _at.unlock_return_error();
527532
}
528533
}
529534
}
530535

531536
_sms_message_ref_number++;
532537
nsapi_error_t ret = _at.get_last_error();
538+
_at.restore_at_timeout();
533539
_at.unlock();
534540

535541
return (ret == NSAPI_ERROR_OK) ? msg_len : ret;
@@ -697,6 +703,7 @@ nsapi_size_or_error_t AT_CellularSMS::get_sms(char *buf, uint16_t len, char *pho
697703
}
698704

699705
_at.lock();
706+
_at.set_at_timeout(10s);
700707

701708
nsapi_size_or_error_t err = list_messages();
702709
if (err == NSAPI_ERROR_OK) {
@@ -710,6 +717,7 @@ nsapi_size_or_error_t AT_CellularSMS::get_sms(char *buf, uint16_t len, char *pho
710717
*buf_size = info->msg_size;
711718
}
712719
free_linked_list();
720+
_at.restore_at_timeout();
713721
_at.unlock();
714722
return NSAPI_ERROR_PARAMETER;
715723
}
@@ -734,6 +742,7 @@ nsapi_size_or_error_t AT_CellularSMS::get_sms(char *buf, uint16_t len, char *pho
734742

735743
free_linked_list();
736744

745+
_at.restore_at_timeout();
737746
_at.unlock();
738747

739748
// update error only when there really was an error, otherwise we return the length
@@ -1027,6 +1036,7 @@ nsapi_error_t AT_CellularSMS::list_messages()
10271036
int index = 0;
10281037
int length = 0;
10291038
char *pdu = NULL;
1039+
char buffer[32]; // 32 > SMS_STATUS_SIZE, SMS_MAX_PHONE_NUMBER_SIZE, SMS_MAX_TIME_STAMP_SIZE
10301040

10311041
_at.resp_start("+CMGL:");
10321042
while (_at.info_resp()) {
@@ -1049,8 +1059,18 @@ nsapi_error_t AT_CellularSMS::list_messages()
10491059
// +CMGL: <index>,<stat>,<oa/da>,[<alpha>],[<scts>][,<tooa/toda>,<length>]<CR><LF><data>[<CR><LF>
10501060
// +CMGL: <index>,<stat>,<da/oa>,[<alpha>],[<scts>][,<tooa/toda>,<length>]<CR><LF><data>[...]]
10511061
index = _at.read_int();
1052-
(void)_at.consume_to_stop_tag(); // consume until <CR><LF>
1053-
(void)_at.consume_to_stop_tag(); // consume until <CR><LF>
1062+
_at.read_string(buffer, SMS_STATUS_SIZE);
1063+
_at.read_string(buffer, SMS_MAX_PHONE_NUMBER_SIZE);
1064+
_at.skip_param(); // <alpha>
1065+
_at.read_string(buffer, SMS_MAX_TIME_STAMP_SIZE);
1066+
_at.read_int();
1067+
int size = _at.read_int(); // length
1068+
_at.consume_to_stop_tag(); // consume until <CR><LF> end of header
1069+
if (size > 0) {
1070+
// we can not use skip param because we already consumed stop tag
1071+
_at.skip_param_bytes(size, 1);
1072+
}
1073+
_at.consume_to_stop_tag_even_found(); // consume until <CR><LF> -> data
10541074
}
10551075

10561076
if (index >= 0) {

‎connectivity/cellular/source/framework/device/ATHandler.cpp

+40
Original file line numberDiff line numberDiff line change
@@ -484,6 +484,26 @@ void ATHandler::skip_param(ssize_t len, uint32_t count)
484484
return;
485485
}
486486

487+
void ATHandler::skip_param_bytes(ssize_t len, uint32_t count)
488+
{
489+
if (!ok_to_proceed()) {
490+
return;
491+
}
492+
493+
for (uint32_t i = 0; i < count; i++) {
494+
ssize_t read_len = 0;
495+
while (read_len < len) {
496+
int c = get_char();
497+
if (c == -1) {
498+
set_error(NSAPI_ERROR_DEVICE_ERROR);
499+
return;
500+
}
501+
read_len++;
502+
}
503+
}
504+
return;
505+
}
506+
487507
ssize_t ATHandler::read_bytes(uint8_t *buf, size_t len)
488508
{
489509
if (!ok_to_proceed()) {
@@ -1093,6 +1113,26 @@ bool ATHandler::consume_to_stop_tag()
10931113
return false;
10941114
}
10951115

1116+
1117+
bool ATHandler::consume_to_stop_tag_even_found()
1118+
{
1119+
if (_error_found) {
1120+
return true;
1121+
}
1122+
1123+
if (!_is_fh_usable) {
1124+
_last_err = NSAPI_ERROR_BUSY;
1125+
return true;
1126+
}
1127+
1128+
if (consume_to_tag((const char *)_stop_tag->tag, true)) {
1129+
return true;
1130+
}
1131+
1132+
clear_error();
1133+
return false;
1134+
}
1135+
10961136
// consume by size needed?
10971137

10981138
void ATHandler::resp_stop()

‎connectivity/cellular/tests/UNITTESTS/doubles/ATHandler_stub.cpp

+9
Original file line numberDiff line numberDiff line change
@@ -201,6 +201,10 @@ void ATHandler::skip_param(ssize_t len, uint32_t count)
201201
{
202202
}
203203

204+
void ATHandler::skip_param_bytes(ssize_t len, uint32_t count)
205+
{
206+
}
207+
204208
ssize_t ATHandler::read_bytes(uint8_t *buf, size_t len)
205209
{
206210
return ATHandler_stub::ssize_value;
@@ -301,6 +305,11 @@ bool ATHandler::consume_to_stop_tag()
301305
return ATHandler_stub::bool_value;
302306
}
303307

308+
bool ATHandler::consume_to_stop_tag_even_found()
309+
{
310+
return ATHandler_stub::bool_value;
311+
}
312+
304313
void ATHandler::resp_stop()
305314
{
306315
if (ATHandler_stub::resp_stop_success_count > 0) {

‎connectivity/cellular/tests/UNITTESTS/framework/AT/at_cellularsms/at_cellularsmstest.cpp

+10-2
Original file line numberDiff line numberDiff line change
@@ -155,8 +155,16 @@ TEST_F(TestAT_CellularSMS, test_AT_CellularSMS_get_sms)
155155
ATHandler_stub::resp_info_false_counter = 1;
156156
ATHandler_stub::resp_info_true_counter2 = 2;
157157
ATHandler_stub::int_value = 11;
158-
ATHandler_stub::read_string_index = 4;
159-
ATHandler_stub::read_string_table[4] = "";
158+
ATHandler_stub::read_string_index = (3 * 2) + (2 * 2); // 3 read_string in list_messages + 2 read_string in read_sms_from_index
159+
ATHandler_stub::read_string_table[10] = "";
160+
// list_messages
161+
ATHandler_stub::read_string_table[9] = "1"; // status
162+
ATHandler_stub::read_string_table[8] = "+00611223344"; // phone
163+
ATHandler_stub::read_string_table[7] = "24/12/12,11:15:00+04"; // timestamp
164+
ATHandler_stub::read_string_table[6] = "1"; // status
165+
ATHandler_stub::read_string_table[5] = "+00611223344"; // phone
166+
ATHandler_stub::read_string_table[4] = "24/12/12,11:15:00+04"; // timestamp
167+
// read_sms_from_index
160168
ATHandler_stub::read_string_table[3] = "REC READ";
161169
ATHandler_stub::read_string_table[2] = "09/01/12,11:15:00+04";
162170
ATHandler_stub::read_string_table[1] = "REC READ";

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