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From e5f96e79d69a1d295f19130da00ec6514d28a8ae Mon Sep 17 00:00:00 2001
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From: Lianbo Jiang <lijiang@redhat.com>
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Date: Tue, 6 Mar 2018 19:07:00 +0900
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Subject: [PATCH] Fix array index out of bound exception
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A data overflow may lead to a reversal, which may turn a positive
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number into a large negative number, in this case, the string's
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length will exceed the array size(for example, eta: -2147483648s),
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here the array size is defined 16 characters. So, it is nessasary
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to consider some exceptions.
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Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
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---
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print_info.c | 21 +++++++++++++--------
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1 file changed, 13 insertions(+), 8 deletions(-)
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diff --git a/makedumpfile-1.6.2/print_info.c b/makedumpfile-1.6.2/print_info.c
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index e0e6a27..09e215a 100644
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--- a/makedumpfile-1.6.2/print_info.c
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+++ b/makedumpfile-1.6.2/print_info.c
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@@ -16,6 +16,8 @@
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#include "print_info.h"
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#include <time.h>
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#include <string.h>
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+#include <stdint.h>
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+#include <inttypes.h>
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#define PROGRESS_MAXLEN "50"
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@@ -352,18 +354,21 @@ static void calc_delta(struct timeval *tv_start, struct timeval *delta)
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}
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/* produce less than 12 bytes on msg */
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-static int eta_to_human_short (int secs, char* msg)
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+static int eta_to_human_short (int64_t secs, char* msg, int maxsize)
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{
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strcpy(msg, "eta: ");
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msg += strlen("eta: ");
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if (secs < 100)
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- sprintf(msg, "%ds", secs);
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+ snprintf(msg, maxsize, "%"PRId64"s", secs);
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else if (secs < 100 * 60)
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- sprintf(msg, "%dm%ds", secs / 60, secs % 60);
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+ snprintf(msg, maxsize, "%"PRId64"m""%"PRId64"s",
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+ secs / 60, secs % 60);
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else if (secs < 48 * 3600)
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- sprintf(msg, "%dh%dm", secs / 3600, (secs / 60) % 60);
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+ snprintf(msg, maxsize, "%"PRId64"h""%"PRId64"m",
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+ secs / 3600, (secs / 60) % 60);
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else if (secs < 100 * 86400)
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- sprintf(msg, "%dd%dh", secs / 86400, (secs / 3600) % 24);
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+ snprintf(msg, maxsize, "%"PRId64"d""%"PRId64"h",
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+ secs / 86400, (secs / 3600) % 24);
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else
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sprintf(msg, ">2day");
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return 0;
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@@ -379,8 +384,8 @@ print_progress(const char *msg, unsigned long current, unsigned long end, struct
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static unsigned int lapse = 0;
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static const char *spinner = "/|\\-";
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struct timeval delta;
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- double eta;
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- char eta_msg[16] = " ";
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+ int64_t eta;
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+ char eta_msg[32] = " ";
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if (current < end) {
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tm = time(NULL);
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@@ -395,7 +400,7 @@ print_progress(const char *msg, unsigned long current, unsigned long end, struct
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calc_delta(start, &delta);
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eta = delta.tv_sec + delta.tv_usec / 1e6;
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eta = (100 - progress) * eta / progress;
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- eta_to_human_short(eta, eta_msg);
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+ eta_to_human_short(eta, eta_msg, sizeof(eta_msg));
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}
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if (flag_ignore_r_char) {
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PROGRESS_MSG("%-" PROGRESS_MAXLEN "s: [%5.1f %%] %c %16s\n",
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--
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2.9.5
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