From dd1d513f1ecc4681737d87a318ec677f07f7c51e Mon Sep 17 00:00:00 2001
From: Masahiko AMANO <hiko-19@ya.ru>
Date: Thu, 29 Dec 2022 17:22:50 +0300
Subject: [PATCH] fix(core): check if got NULL in all functions

---
 core/sappyou.c  | 8 +++++++-
 core/sasahyou.c | 8 +++++++-
 core/shoppyou.c | 6 ++++++
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/core/sappyou.c b/core/sappyou.c
index a6c79f7..7ee2db3 100644
--- a/core/sappyou.c
+++ b/core/sappyou.c
@@ -99,6 +99,9 @@ int sappyou_save(Sappyou *sappyou) {
 }
 
 int sappyou_open(Sappyou *sappyou, const char *path) {
+    if (path == NULL) {
+        return 1;
+    }
     sappyou->file = fopen(path, "rb");
     if (sappyou->file == NULL) {
         return 1;
@@ -107,6 +110,9 @@ int sappyou_open(Sappyou *sappyou, const char *path) {
 }
 
 int sappyou_dump(Sappyou *sappyou, const char *path) {
+    if (path == NULL) {
+        return 1;
+    }
     sappyou->file = fopen(path, "wb");
     if (sappyou->file == NULL) {
         return 1;
@@ -115,7 +121,7 @@ int sappyou_dump(Sappyou *sappyou, const char *path) {
 }
 
 int tanzaku_add(Sappyou *sappyou, const char *name, const char *description) {
-    if (sappyou->size == -1 && sappyou->hole_cnt == 0) {
+    if (name == NULL || description == NULL || sappyou->size == -1 && sappyou->hole_cnt == 0) {
         return 1;
     }
     Tanzaku newbie;
diff --git a/core/sasahyou.c b/core/sasahyou.c
index 3a6ace5..93da39b 100644
--- a/core/sasahyou.c
+++ b/core/sasahyou.c
@@ -98,6 +98,9 @@ int sasahyou_save(Sasahyou *sasahyou) {
 }
 
 int sasahyou_open(Sasahyou *sasahyou, const char *path) {
+    if (path == NULL) {
+        return 1;
+    }
     sasahyou->file = fopen(path, "rb");
     if (sasahyou->file == NULL) {
         return 1;
@@ -106,6 +109,9 @@ int sasahyou_open(Sasahyou *sasahyou, const char *path) {
 }
 
 int sasahyou_dump(Sasahyou *sasahyou, const char *path) {
+    if (path == NULL) {
+        return 1;
+    }
     sasahyou->file = fopen(path, "wb");
     if (sasahyou->file == NULL) {
         return 1;
@@ -114,7 +120,7 @@ int sasahyou_dump(Sasahyou *sasahyou, const char *path) {
 }
 
 int sasa_add(Sasahyou *sasahyou, const char *path) {
-    if (sasahyou->size == -1 && sasahyou->hole_cnt == 0) {
+    if (path == NULL || sasahyou->size == -1 && sasahyou->hole_cnt == 0) {
         return 1;
     }
     Sasa newbie;
diff --git a/core/shoppyou.c b/core/shoppyou.c
index b2b85f0..6d72da2 100644
--- a/core/shoppyou.c
+++ b/core/shoppyou.c
@@ -81,6 +81,9 @@ int shoppyou_save(Shoppyou *shoppyou) {
 }
 
 int shoppyou_open(Shoppyou *shoppyou, const char *path) {
+    if (path == NULL) {
+        return 1;
+    }
     shoppyou->file = fopen(path, "rb");
     if (shoppyou->file == NULL) {
         return 1;
@@ -90,6 +93,9 @@ int shoppyou_open(Shoppyou *shoppyou, const char *path) {
 }
 
 int shoppyou_dump(Shoppyou *shoppyou, const char *path) {
+    if (path == NULL) {
+        return 1;
+    }
     shoppyou->file = fopen(path, "wb");
     if (shoppyou->file == NULL) {
         return 1;