Check result of fgets (fixes wwalexander#3)

wwalexander · wwalexander · commit 24d6cdea3fea · 2019-01-16T12:14:31.000-05:00
diff --git a/hostsblock.c b/hostsblock.c
@@ -128,8 +128,8 @@ int main(int argc, char **argv)
 	}
 
 	while (1) {
-		fgets(rule, MAX_DOMAIN_RULE_LENGTH, list);
-		if (feof(list) || ferror(list)) break;
+		char *c = fgets(rule, MAX_DOMAIN_RULE_LENGTH, list);
+		if (c == NULL || feof(list) || ferror(list)) break;
 
 		if (!get_domain(rule, domain)) {
 			printf("0\t%s\n", domain);

Original file line number	Diff line number	Diff line change
`@@ -128,8 +128,8 @@ int main(int argc, char **argv)`
`128`	`128`	`}`
`129`	`129`
`130`	`130`	`while (1) {`
`131`		`- fgets(rule, MAX_DOMAIN_RULE_LENGTH, list);`
`132`		`- if (feof(list) \|\| ferror(list)) break;`
	`131`	`+ char *c = fgets(rule, MAX_DOMAIN_RULE_LENGTH, list);`
	`132`	`+ if (c == NULL \|\| feof(list) \|\| ferror(list)) break;`
`133`	`133`
`134`	`134`	`if (!get_domain(rule, domain)) {`
`135`	`135`	`printf("0\t%s\n", domain);`