1 files changed, 101 insertions, 0 deletions
diff --git a/ext/sha1/sha1-ruby.c b/ext/sha1/sha1-ruby.c
new file mode 100644
index 0000000000..394ebf7c16
--- /dev/null
+++ b/ext/sha1/sha1-ruby.c
@@ -0,0 +1,101 @@
+#include "ruby.h"
+#include "sha1.h"
+
+static VALUE cSHA1;
+
+static VALUE
+sha1_update(obj, str)
+    VALUE obj;
+    struct RString *str;
+{
+    SHA1_CTX *sha1;
+
+    Check_Type(str, T_STRING);
+    Data_Get_Struct(obj, SHA1_CTX, sha1);
+    SHA1Update(sha1, str->ptr, str->len);
+
+    return obj;
+}
+
+static VALUE
+sha1_digest(obj)
+    VALUE obj;
+{
+    SHA1_CTX *sha1, ctx;
+    unsigned char digest[20];
+
+    Data_Get_Struct(obj, SHA1_CTX, sha1);
+    ctx = *sha1;
+    SHA1Final(digest, &ctx);
+
+    return rb_str_new(digest, 20);
+}
+
+static VALUE
+sha1_hexdigest(obj)
+    VALUE obj;
+{
+    SHA1_CTX *sha1, ctx;
+    unsigned char digest[20];
+    char buf[33];
+    int i;
+
+    Data_Get_Struct(obj, SHA1_CTX, sha1);
+    ctx = *sha1;
+    SHA1Final(digest, &ctx);
+
+    for (i=0; i<20; i++) {
+	sprintf(buf+i*2, "%02x", digest[i]);
+    }
+    return rb_str_new(buf, 40);
+}
+
+static VALUE
+sha1_clone(obj)
+    VALUE obj;
+{
+    SHA1_CTX *sha1, *sha1_new;
+
+    Data_Get_Struct(obj, SHA1_CTX, sha1);
+    obj = Data_Make_Struct(CLASS_OF(obj), SHA1_CTX, 0, free, sha1_new);
+    *sha1_new = *sha1;
+
+    return obj;
+}
+
+static VALUE
+sha1_new(argc, argv, class)
+    int argc;
+    VALUE* argv;
+    VALUE class;
+{
+    VALUE arg, obj;
+    SHA1_CTX *sha1;
+
+    rb_scan_args(argc, argv, "01", &arg);
+    if (!NIL_P(arg)) Check_Type(arg, T_STRING);
+
+    obj = Data_Make_Struct(class, SHA1_CTX, 0, free, sha1);
+    rb_obj_call_init(obj, argc, argv);
+    SHA1Init(sha1);
+    if (!NIL_P(arg)) {
+	sha1_update(obj, arg);
+    }
+
+    return obj;
+}
+
+void
+Init_sha1()
+{
+    cSHA1 = rb_define_class("SHA1", rb_cObject);
+
+    rb_define_singleton_method(cSHA1, "new", sha1_new, -1);
+    rb_define_singleton_method(cSHA1, "sha1", sha1_new, -1);
+
+    rb_define_method(cSHA1, "update", sha1_update, 1);
+    rb_define_method(cSHA1, "<<", sha1_update, 1);
+    rb_define_method(cSHA1, "digest", sha1_digest, 0);
+    rb_define_method(cSHA1, "hexdigest", sha1_hexdigest, 0);
+    rb_define_method(cSHA1, "clone",  sha1_clone, 0);
+}