60 lines
2.3 KiB
Diff
60 lines
2.3 KiB
Diff
|
diff --git a/png.c b/png.c
|
||
|
|
index 18d26db..3cf2b19 100644
|
||
|
|
--- a/png.c
|
||
|
|
+++ b/png.c
|
||
|
|
@@ -675,6 +675,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
|
||
|
|
|
||
|
|
if (png_ptr == NULL)
|
||
|
|
return (NULL);
|
||
|
|
+
|
||
|
|
if (png_ptr->time_buffer == NULL)
|
||
|
|
{
|
||
|
|
png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, (png_uint_32)(29*
|
||
|
|
@@ -685,7 +686,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
|
||
|
|
{
|
||
|
|
wchar_t time_buf[29];
|
||
|
|
wsprintf(time_buf, TEXT("%d %S %d %02d:%02d:%02d +0000"),
|
||
|
|
- ptime->day % 32, short_months[(ptime->month - 1) % 12],
|
||
|
|
+ ptime->day % 32, short_months[(ptime->month - 1U) % 12],
|
||
|
|
ptime->year, ptime->hour % 24, ptime->minute % 60,
|
||
|
|
ptime->second % 61);
|
||
|
|
WideCharToMultiByte(CP_ACP, 0, time_buf, -1, png_ptr->time_buffer,
|
||
|
|
@@ -696,7 +697,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
|
||
|
|
{
|
||
|
|
char near_time_buf[29];
|
||
|
|
png_snprintf6(near_time_buf, 29, "%d %s %d %02d:%02d:%02d +0000",
|
||
|
|
- ptime->day % 32, short_months[(ptime->month - 1) % 12],
|
||
|
|
+ ptime->day % 32, short_months[(ptime->month - 1U) % 12],
|
||
|
|
ptime->year, ptime->hour % 24, ptime->minute % 60,
|
||
|
|
ptime->second % 61);
|
||
|
|
png_memcpy(png_ptr->time_buffer, near_time_buf,
|
||
|
|
@@ -704,7 +705,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
png_snprintf6(png_ptr->time_buffer, 29, "%d %s %d %02d:%02d:%02d +0000",
|
||
|
|
- ptime->day % 32, short_months[(ptime->month - 1) % 12],
|
||
|
|
+ ptime->day % 32, short_months[(ptime->month - 1U) % 12],
|
||
|
|
ptime->year, ptime->hour % 24, ptime->minute % 60,
|
||
|
|
ptime->second % 61);
|
||
|
|
#endif
|
||
|
|
diff --git a/pngset.c b/pngset.c
|
||
|
|
index b1ce91d..7a47b1e 100644
|
||
|
|
--- a/pngset.c
|
||
|
|
+++ b/pngset.c
|
||
|
|
@@ -845,6 +845,15 @@ png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
|
||
|
|
(png_ptr->mode & PNG_WROTE_tIME))
|
||
|
|
return;
|
||
|
|
|
||
|
|
+ if (mod_time->month == 0 || mod_time->month > 12 ||
|
||
|
|
+ mod_time->day == 0 || mod_time->day > 31 ||
|
||
|
|
+ mod_time->hour > 23 || mod_time->minute > 59 ||
|
||
|
|
+ mod_time->second > 60)
|
||
|
|
+ {
|
||
|
|
+ png_warning(png_ptr, "Ignoring invalid time value");
|
||
|
|
+ return;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time));
|
||
|
|
info_ptr->valid |= PNG_INFO_tIME;
|
||
|
|
}
|
