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i3lock-color
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Free on layoutmode 2 as well

This commit is contained in:
Raymond Li 2020-12-20 15:31:31 -05:00
parent 47b3305fd6
commit cd8f286aa1
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GPG Key ID: A014EA89B62BBB1B
1 changed files with 14 additions and 32 deletions
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46
i3lock.c
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@ -296,12 +296,13 @@ static void u8_dec(char *s, int *i) {
*/
static char* get_keylayoutname(int mode, xcb_connection_t* conn) {
if (mode < 0 || mode > 2) return NULL;
char *newans = NULL, *answer = xcb_get_key_group_names(conn);
char *newans = NULL, *newans2 = NULL, *answer = xcb_get_key_group_names(conn);
int substringStart = 0, substringEnd = 0, size = 0;
DEBUG("keylayout answer is: [%s]\n", answer);
switch (mode) {
case 1:
// truncate the string at the first parens
for(int i = 0; answer[i] != '\0'; ++i) {
for (int i = 0; answer[i] != '\0'; ++i) {
if (answer[i] == '(') {
if (i != 0 && answer[i - 1] == ' ') {
answer[i - 1] = '\0';
@ -314,16 +315,23 @@ static char* get_keylayoutname(int mode, xcb_connection_t* conn) {
}
break;
case 2:
for(int i = 0; answer[i] != '\0'; ++i) {
for (int i = 0; answer[i] != '\0'; ++i) {
if (answer[i] == '(') {
newans = &answer[i + 1];
substringStart = i + 1;
} else if (answer[i] == ')' && newans != NULL) {
answer[i] = '\0';
substringEnd = i;
break;
}
}
if (newans != NULL)
answer = newans;
if (newans != NULL) {
size = sizeof(char) * (substringEnd - substringStart + 1);
newans2 = malloc(size);
memcpy(newans2, newans, size);
free(answer);
answer = newans2;
}
break;
case 0:
// fall through
@ -893,33 +901,7 @@ static void process_xkb_event(xcb_generic_event_t *gevent) {
event->state_notify.baseGroup,
event->state_notify.latchedGroup,
event->state_notify.lockedGroup);
/* TODO: freeing layout_text when mode is 2 throws:
=================================================================
==25882==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x602000000919 in thread T0
#0 0x7fe34ddeb7cf in __interceptor_free (/lib/x86_64-linux-gnu/libasan.so.5+0x10d7cf)
#1 0x55c43cbb372b in process_xkb_event ../../i3lock-color/i3lock.c:923
#2 0x55c43cbb544d in xcb_check_cb ../../i3lock-color/i3lock.c:1262
#3 0x7fe34d408bc2 in ev_invoke_pending (/lib/x86_64-linux-gnu/libev.so.4+0x5bc2)
#4 0x7fe34d40cb92 in ev_run (/lib/x86_64-linux-gnu/libev.so.4+0x9b92)
#5 0x55c43cbb100c in ev_loop /usr/include/ev.h:842
#6 0x55c43cbbb757 in main ../../i3lock-color/i3lock.c:2350
#7 0x7fe34d0c40b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
#8 0x55c43cbae20d in _start (/mnt/c/Users/raymo/Git/i3lock-color/build/i3lock+0x1520d)
0x602000000919 is located 9 bytes inside of 13-byte region [0x602000000910,0x60200000091d)
allocated by thread T0 here:
#0 0x7fe34ddebbc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x55c43cbd0204 in get_atom_name ../../i3lock-color/xcb.c:531
#2 0x55c43cbd09b7 in xcb_get_key_group_names ../../i3lock-color/xcb.c:607
#3 0x55c43cbb1389 in get_keylayoutname ../../i3lock-color/i3lock.c:299
#4 0x55c43cbb9e39 in main ../../i3lock-color/i3lock.c:2143
#5 0x7fe34d0c40b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
SUMMARY: AddressSanitizer: bad-free (/lib/x86_64-linux-gnu/libasan.so.5+0x10d7cf) in __interceptor_free
==25882==ABORTING
Not freeing it results in a memory leak.
*/
if (keylayout_mode == 1 && layout_text != NULL) {
if (layout_text != NULL) {
free(layout_text);
layout_text = NULL;
}