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#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_init(argc, argv, self)
int argc;
VALUE* argv;
VALUE self;
{
VALUE arg;
rb_scan_args(argc, argv, "01", &arg);
if (!NIL_P(arg)) sha1_update(self, arg);
return self;
}
static VALUE
sha1_new(argc, argv, class)
int argc;
VALUE* argv;
VALUE class;
{
VALUE obj;
SHA1_CTX *sha1;
obj = Data_Make_Struct(class, SHA1_CTX, 0, free, sha1);
SHA1Init(sha1);
rb_obj_call_init(obj, argc, argv);
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, "initialize", sha1_init, -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);
}
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