diff options
Diffstat (limited to 'ext/digest/digest.c')
| -rw-r--r-- | ext/digest/digest.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/ext/digest/digest.c b/ext/digest/digest.c index 8c348078a4..53c05f9ef4 100644 --- a/ext/digest/digest.c +++ b/ext/digest/digest.c @@ -42,8 +42,8 @@ get_digest_base_metadata(VALUE klass) static VALUE hexdigest_str_new(VALUE str_digest) { - char *digest = RSTRING_PTR(str_digest); - size_t digest_len = RSTRING_LEN(str_digest); + char *digest; + size_t digest_len; int i; VALUE str; char *p; @@ -52,6 +52,10 @@ hexdigest_str_new(VALUE str_digest) 'a', 'b', 'c', 'd', 'e', 'f' }; + StringValue(str_digest); + digest = RSTRING_PTR(str_digest); + digest_len = RSTRING_LEN(str_digest); + if (LONG_MAX / 2 < digest_len) { rb_raise(rb_eRuntimeError, "digest string too long"); } @@ -71,8 +75,8 @@ hexdigest_str_new(VALUE str_digest) static VALUE bubblebabble_str_new(VALUE str_digest) { - char *digest = RSTRING_PTR(str_digest); - size_t digest_len = RSTRING_LEN(str_digest); + char *digest; + size_t digest_len; VALUE str; char *p; int i, j, seed = 1; @@ -84,6 +88,10 @@ bubblebabble_str_new(VALUE str_digest) 'p', 'r', 's', 't', 'v', 'z', 'x' }; + StringValue(str_digest); + digest = RSTRING_PTR(str_digest); + digest_len = RSTRING_LEN(str_digest); + if ((LONG_MAX - 2) / 3 < (digest_len | 1)) { rb_raise(rb_eRuntimeError, "digest string too long"); } |