qmk

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commit 09f5767072b65d98371199ab03981940d132b123
parent ed6a872911ba13383585002699a0024510d7b1f4
Author: Drashna Jaelre <drashna@live.com>
Date:   Mon, 15 Jul 2019 23:56:34 -0700

Add out of bound check for Leader Key sequence array (#5840)

* Add out of bound check for Leader Key sequence array

* A shot at advanced C stuff for Leader Key optimization

* Revert most changes

* Change default back

* Include string.h if compiling for ARM

* Use sizeof instead of a number

Diffstat:
quantum/process_keycode/process_leader.c | 18+++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/quantum/process_keycode/process_leader.c b/quantum/process_keycode/process_leader.c @@ -17,6 +17,9 @@ #ifdef LEADER_ENABLE #include "process_leader.h" +#ifdef __arm__ +# include <string.h> +#endif #ifndef LEADER_TIMEOUT #define LEADER_TIMEOUT 300 @@ -41,11 +44,7 @@ void qk_leader_start(void) { leading = true; leader_time = timer_read(); leader_sequence_size = 0; - leader_sequence[0] = 0; - leader_sequence[1] = 0; - leader_sequence[2] = 0; - leader_sequence[3] = 0; - leader_sequence[4] = 0; + memset(leader_sequence, 0, sizeof(leader_sequence)); } bool process_leader(uint16_t keycode, keyrecord_t *record) { @@ -58,8 +57,13 @@ bool process_leader(uint16_t keycode, keyrecord_t *record) { keycode = keycode & 0xFF; } #endif // LEADER_KEY_STRICT_KEY_PROCESSING - leader_sequence[leader_sequence_size] = keycode; - leader_sequence_size++; + if ( leader_sequence_size < ( sizeof(leader_sequence) / sizeof(leader_sequence[0]) ) ) { + leader_sequence[leader_sequence_size] = keycode; + leader_sequence_size++; + } else { + leading = false; + leader_end(); + } #ifdef LEADER_PER_KEY_TIMING leader_time = timer_read(); #endif