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[2.0.x] Memory overflow protection (#9562)

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GMagician 2018-02-10 21:14:34 +01:00 committed by Scott Lahteine
parent 5990266724
commit 299606e4ae
1 changed files with 4 additions and 4 deletions
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8
Marlin/src/lcd/ultralcd.cpp
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@ -92,7 +92,7 @@ uint8_t lcd_status_update_delay = 1, // First update one loop delayed
lcd_status_message_level; // Higher level blocks lower level lcd_status_message_level; // Higher level blocks lower level
#if ENABLED(STATUS_MESSAGE_SCROLLING) #if ENABLED(STATUS_MESSAGE_SCROLLING)
#define MAX_MESSAGE_LENGTH max(2 * CHARSIZE * LCD_WIDTH, LONG_FILENAME_LENGTH) #define MAX_MESSAGE_LENGTH max(CHARSIZE * 2 * (LCD_WIDTH), LONG_FILENAME_LENGTH)
uint8_t status_scroll_pos = 0; uint8_t status_scroll_pos = 0;
#else #else
#define MAX_MESSAGE_LENGTH CHARSIZE * (LCD_WIDTH) #define MAX_MESSAGE_LENGTH CHARSIZE * (LCD_WIDTH)
@ -5218,7 +5218,7 @@ bool lcd_hasstatus() { return (lcd_status_message[0] != '\0'); }
void lcd_setstatus(const char * const message, const bool persist) { void lcd_setstatus(const char * const message, const bool persist) {
if (lcd_status_message_level > 0) return; if (lcd_status_message_level > 0) return;
strncpy(lcd_status_message, message, 3 * (LCD_WIDTH)); strncpy(lcd_status_message, message, COUNT(lcd_status_message) - 1);
lcd_finishstatus(persist); lcd_finishstatus(persist);
} }
@ -5226,7 +5226,7 @@ void lcd_setstatusPGM(const char * const message, int8_t level) {
if (level < 0) level = lcd_status_message_level = 0; if (level < 0) level = lcd_status_message_level = 0;
if (level < lcd_status_message_level) return; if (level < lcd_status_message_level) return;
lcd_status_message_level = level; lcd_status_message_level = level;
strncpy_P(lcd_status_message, message, 3 * (LCD_WIDTH)); strncpy_P(lcd_status_message, message, COUNT(lcd_status_message) - 1);
lcd_finishstatus(level > 0); lcd_finishstatus(level > 0);
} }
@ -5235,7 +5235,7 @@ void lcd_status_printf_P(const uint8_t level, const char * const fmt, ...) {
lcd_status_message_level = level; lcd_status_message_level = level;
va_list args; va_list args;
va_start(args, fmt); va_start(args, fmt);
vsnprintf_P(lcd_status_message, 3 * (LCD_WIDTH), fmt, args); vsnprintf_P(lcd_status_message, COUNT(lcd_status_message) - 1, fmt, args);
va_end(args); va_end(args);
lcd_finishstatus(level > 0); lcd_finishstatus(level > 0);
} }