maple/board.c: class_body(): tmp[]: Fix possible out-of-bound arr…

…ay accessing.
ccns · May 4, 2019 · 82641a1 · 82641a1
1 parent 5594199
commit 82641a1
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/maple/board.c b/maple/board.c
@@ -1230,13 +1230,14 @@ class_body(
  str = brd->blast > brd_visit[chn] ? "\x1b[1;31m★\x1b[m" : "☆";
 
  char tmp[BTLEN + 1] = {0};
+ int e_cols = (d_cols + 32 > BTLEN) ? BTLEN - 32 : d_cols;
 
  strcpy(tmp, brd->title);
- if (tmp[d_cols + 31] & 0x80)
-// tmp[d_cols + 33] = '\0';
+ if (tmp[e_cols + 31] & 0x80)
+// tmp[e_cols + 33] = '\0';
 // else
- tmp[d_cols + 31] = ' ';
- tmp[d_cols + 32] = '\0';
+ tmp[e_cols + 31] = ' ';
+ tmp[e_cols + 32] = '\0';
 
 /* 081122.cache:看板性質, 不訂閱, 秘密, 好友, 一般 */
  if (bits[chn] & BRD_Z_BIT)