prevent duplicate lookup when searching for verification algorithm

kleinmrk · kleinmrk · commit 58fe6bcbadd8 · 2022-10-02T22:50:27.000+02:00
diff --git a/include/jwt-cpp/jwt.h b/include/jwt-cpp/jwt.h
@@ -3801,11 +3801,12 @@ namespace jwt {
 			}
 
 			if (!key_found) {
-				if (algs.count(algo) == 0) {
+				auto alg = algs.find(algo);
+				if (alg == algs.end()) {
 					ec = error::token_verification_error::wrong_algorithm;
 					return;
 				}
-				algs.at(algo)->verify(data, sig, ec);
+				alg->second->verify(data, sig, ec);
 			}
 
 			if (ec) return;

Original file line number	Diff line number	Diff line change
`@@ -3801,11 +3801,12 @@ namespace jwt {`
`3801`	`3801`	`}`
`3802`	`3802`
`3803`	`3803`	`if (!key_found) {`
`3804`		`- if (algs.count(algo) == 0) {`
	`3804`	`+ auto alg = algs.find(algo);`
	`3805`	`+ if (alg == algs.end()) {`
`3805`	`3806`	`ec = error::token_verification_error::wrong_algorithm;`
`3806`	`3807`	`return;`
`3807`	`3808`	`}`
`3808`		`- algs.at(algo)->verify(data, sig, ec);`
	`3809`	`+ alg->second->verify(data, sig, ec);`
`3809`	`3810`	`}`
`3810`	`3811`
`3811`	`3812`	`if (ec) return;`