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Security review: check results of snprintf.

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Calls marked with xSnprintf shouldn't fail.
Abort program cleanly if any of them does.
This commit is contained in:
Hisham Muhammad
2017-07-27 16:07:50 -03:00
parent 3975e9ce5c
commit 09e241fb12
25 changed files with 125 additions and 120 deletions
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28
CPUMeter.c
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@ -48,7 +48,7 @@ static void CPUMeter_init(Meter* this) {
int cpu = this->param;
if (this->pl->cpuCount > 1) {
char caption[10];
snprintf(caption, sizeof(caption), "%-3d", Settings_cpuId(this->pl->settings, cpu - 1));
xSnprintf(caption, sizeof(caption), "%-3d", Settings_cpuId(this->pl->settings, cpu - 1));
Meter_setCaption(this, caption);
}
if (this->param == 0)
@ -58,12 +58,12 @@ static void CPUMeter_init(Meter* this) {
static void CPUMeter_updateValues(Meter* this, char* buffer, int size) {
int cpu = this->param;
if (cpu > this->pl->cpuCount) {
snprintf(buffer, size, "absent");
xSnprintf(buffer, size, "absent");
return;
}
memset(this->values, 0, sizeof(double) * CPU_METER_ITEMCOUNT);
double percent = Platform_setCPUValues(this, cpu);
snprintf(buffer, size, "%5.1f%%", percent);
xSnprintf(buffer, size, "%5.1f%%", percent);
}
static void CPUMeter_display(Object* cast, RichString* out) {
@ -74,44 +74,44 @@ static void CPUMeter_display(Object* cast, RichString* out) {
RichString_append(out, CRT_colors[METER_TEXT], "absent");
return;
}
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NORMAL]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NORMAL]);
RichString_append(out, CRT_colors[METER_TEXT], ":");
RichString_append(out, CRT_colors[CPU_NORMAL], buffer);
if (this->pl->settings->detailedCPUTime) {
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_KERNEL]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_KERNEL]);
RichString_append(out, CRT_colors[METER_TEXT], "sy:");
RichString_append(out, CRT_colors[CPU_KERNEL], buffer);
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NICE]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NICE]);
RichString_append(out, CRT_colors[METER_TEXT], "ni:");
RichString_append(out, CRT_colors[CPU_NICE_TEXT], buffer);
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IRQ]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IRQ]);
RichString_append(out, CRT_colors[METER_TEXT], "hi:");
RichString_append(out, CRT_colors[CPU_IRQ], buffer);
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_SOFTIRQ]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_SOFTIRQ]);
RichString_append(out, CRT_colors[METER_TEXT], "si:");
RichString_append(out, CRT_colors[CPU_SOFTIRQ], buffer);
if (this->values[CPU_METER_STEAL]) {
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_STEAL]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_STEAL]);
RichString_append(out, CRT_colors[METER_TEXT], "st:");
RichString_append(out, CRT_colors[CPU_STEAL], buffer);
}
if (this->values[CPU_METER_GUEST]) {
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_GUEST]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_GUEST]);
RichString_append(out, CRT_colors[METER_TEXT], "gu:");
RichString_append(out, CRT_colors[CPU_GUEST], buffer);
}
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IOWAIT]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IOWAIT]);
RichString_append(out, CRT_colors[METER_TEXT], "wa:");
RichString_append(out, CRT_colors[CPU_IOWAIT], buffer);
} else {
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_KERNEL]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_KERNEL]);
RichString_append(out, CRT_colors[METER_TEXT], "sys:");
RichString_append(out, CRT_colors[CPU_KERNEL], buffer);
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NICE]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NICE]);
RichString_append(out, CRT_colors[METER_TEXT], "low:");
RichString_append(out, CRT_colors[CPU_NICE_TEXT], buffer);
if (this->values[CPU_METER_IRQ]) {
snprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IRQ]);
xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IRQ]);
RichString_append(out, CRT_colors[METER_TEXT], "vir:");
RichString_append(out, CRT_colors[CPU_GUEST], buffer);
}