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gsm: fix parsing of unsolicited CREG/CGREG response with RAC

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This commit is contained in:
Dan Williams
2011-10-27 16:38:11 -05:00
parent ccad4aaa9d
commit 889ae2fb4b
2 changed files with 40 additions and 19 deletions
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48
src/mm-modem-helpers.c
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@@ -11,7 +11,7 @@
* GNU General Public License for more details:
*
* Copyright (C) 2008 - 2009 Novell, Inc.
* Copyright (C) 2009 - 2010 Red Hat, Inc.
* Copyright (C) 2009 - 2011 Red Hat, Inc.
*/
#include <config.h>
@@ -355,6 +355,20 @@ parse_uint (char *str, int base, glong nmin, glong nmax, gboolean *valid)
return *valid ? (guint) ret : 0;
}
static gboolean
item_is_lac_not_stat (GMatchInfo *info, guint32 item)
{
char *str;
gboolean is_lac = FALSE;
/* A <stat> will always be a single digit, without quotes */
str = g_match_info_fetch (info, item);
g_assert (str);
is_lac = (strchr (str, '"') || strlen (str) > 1);
g_free (str);
return is_lac;
}
gboolean
mm_gsm_parse_creg_response (GMatchInfo *info,
guint32 *out_reg_state,
@@ -401,13 +415,8 @@ mm_gsm_parse_creg_response (GMatchInfo *info,
* CREG=2 (non-standard): +CREG: <n>,<stat>,<lac>,<ci>
*/
/* To distinguish, check length of the third match item. If it's
* more than one digit or has quotes in it then it's a LAC and we
* got the first format.
*/
str = g_match_info_fetch (info, 3);
if (str && (strchr (str, '"') || strlen (str) > 1)) {
g_free (str);
/* Check if the third item is the LAC to distinguish the two cases */
if (item_is_lac_not_stat (info, 3)) {
istat = 2;
ilac = 3;
ici = 4;
@@ -418,12 +427,23 @@ mm_gsm_parse_creg_response (GMatchInfo *info,
ici = 5;
}
} else if (n_matches == 7) {
/* CREG=2 (non-standard): +CREG: <n>,<stat>,<lac>,<ci>,<AcT> */
istat = 3;
ilac = 4;
ici = 5;
iact = 6;
}
/* CREG=2 (solicited): +CREG: <n>,<stat>,<lac>,<ci>,<AcT>
* CREG=2 (unsolicited with RAC): +CREG: <stat>,<lac>,<ci>,<AcT>,<RAC>
*/
/* Check if the third item is the LAC to distinguish the two cases */
if (item_is_lac_not_stat (info, 3)) {
istat = 2;
ilac = 3;
ici = 4;
iact = 5;
} else {
istat = 3;
ilac = 4;
ici = 5;
iact = 6;
}
}
/* Status */
str = g_match_info_fetch (info, istat);