reply.scm

#|
LambdaNative - a cross-platform Scheme framework
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|#

;; Timestamp reply related functions

(c-declare #<<end-of-c-declare
#include <string.h>
#include <openssl/ts.h>

int get_tsr(unsigned char* tsr, int len, unsigned char* result){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  len = i2d_TS_RESP(ts_resp,NULL);
  i2d_TS_RESP(ts_resp,&result);
  TS_RESP_free(ts_resp);
  return len;
}

int get_tsr_status(unsigned char *tsr, int len){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  TS_STATUS_INFO *ts_status = TS_RESP_get_status_info(ts_resp);
  if (ts_resp==NULL)
    return 0;
  ret = ASN1_INTEGER_get(TS_STATUS_INFO_get0_status(ts_status));
  TS_RESP_free(ts_resp);
  return ret;
}

int get_tsr_statusstr(unsigned char *tsr, int len,unsigned char *txt){
  static const char *status_map[] = {
    "Granted",
    "Granted with modifications",
    "Rejected",
    "Waiting",
    "Revocation warning",
    "Revoked"
  };
  static int status_len[] = {7,26,8,7,18,7};
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  if (ts_resp==NULL)
    return 0;
  TS_STATUS_INFO *ts_status = TS_RESP_get_status_info(ts_resp);
  int st = ASN1_INTEGER_get(TS_STATUS_INFO_get0_status(ts_status));
  if (st > 5)
    return 0;
  ret = status_len[st];
  const unsigned char *retstr=status_map[st];
  int i;
  for (i=0;i<ret;i++){
    txt[i]=retstr[i];
  }
  TS_RESP_free(ts_resp);
  return ret;
}

int get_tsr_version(unsigned char *tsr, int len){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  TS_TST_INFO *ts_info = TS_RESP_get_tst_info(ts_resp);
  if (ts_resp==NULL)
    return 0;
  ret=TS_TST_INFO_get_version(ts_info);
  TS_RESP_free(ts_resp);
  return ret;
}

int get_tsr_nonce(unsigned char *tsr, int len){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  if (ts_resp==NULL)
    return 0;
  TS_TST_INFO *ts_info = TS_RESP_get_tst_info(ts_resp);
  const ASN1_INTEGER *nonce = TS_TST_INFO_get_nonce(ts_info);
  ret = ASN1_INTEGER_get(nonce);
  TS_RESP_free(ts_resp);
  return ret;
}

int get_tsr_serial(unsigned char *tsr, int len, unsigned char *msg){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  TS_TST_INFO *ts_info = TS_RESP_get_tst_info(ts_resp);
  if (ts_resp==NULL)
    return 0;
  const ASN1_INTEGER *serial = TS_TST_INFO_get_serial(ts_info);
  BIGNUM *num_bn = BN_new();
  if (num_bn==NULL)
    return 0;
  ASN1_INTEGER_to_BN(serial, num_bn);
  ret=BN_bn2bin(num_bn,msg);
  TS_RESP_free(ts_resp);
  return ret;
}

int get_tsr_policy(unsigned char *tsr, int len, unsigned char *msg){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  if (ts_resp==NULL)
    return 0;
  TS_TST_INFO *ts_info = TS_RESP_get_tst_info(ts_resp);
  ASN1_OBJECT *policy_id = TS_TST_INFO_get_policy_id(ts_info);
  if (policy_id == NULL) {
    msg = "";
    ret = 0;
  } else {
    char obj_txt[128];
    ret = OBJ_obj2txt(obj_txt, sizeof(obj_txt), policy_id, 0);
    int i;
    for (i=0;i<ret;i++) {
      msg[i]=obj_txt[i];
    }
  }
  TS_RESP_free(ts_resp);
  return ret;
}

int get_tsr_msg(unsigned char *tsr, int len, unsigned char *msg){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  if (ts_resp==NULL)
    return 0;
  TS_TST_INFO *ts_info = TS_RESP_get_tst_info(ts_resp);
  TS_MSG_IMPRINT *msg_imprint = TS_TST_INFO_get_msg_imprint(ts_info);
  ASN1_OCTET_STRING *str = TS_MSG_IMPRINT_get_msg(msg_imprint);
  ret = ASN1_STRING_length(str);
  unsigned char *data = ASN1_STRING_data(str);
  int i;
  for (i=0;i<ret;i++){
    msg[i]=data[i];
  }
  TS_RESP_free(ts_resp);
  return ret;
}

double get_tsr_accuracy(unsigned char *tsr, int len){
  double ret=0.;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  TS_TST_INFO *ts_info = TS_RESP_get_tst_info(ts_resp);
  if (ts_resp==NULL)
    return 0;
  TS_ACCURACY *accuracy = TS_TST_INFO_get_accuracy(ts_info);
  if (accuracy==NULL)
    return 0;
  const ASN1_INTEGER *sec = TS_ACCURACY_get_seconds(accuracy);
  if (sec != NULL)
    ret+= ASN1_INTEGER_get(sec);
  const ASN1_INTEGER *msec = TS_ACCURACY_get_millis(accuracy);
  if (msec != NULL)
    ret+= (double)ASN1_INTEGER_get(msec)/1000;
  const ASN1_INTEGER *usec = TS_ACCURACY_get_micros(accuracy);
  if (usec != NULL)
    ret+= (double)ASN1_INTEGER_get(usec)/1000000;
  TS_RESP_free(ts_resp);
  return ret;
}

int get_tsr_ordering(unsigned char *tsr, int len){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  TS_TST_INFO *ts_info = TS_RESP_get_tst_info(ts_resp);
  if (ts_resp==NULL)
    return 0;
  ret=TS_TST_INFO_get_ordering(ts_info);
  TS_RESP_free(ts_resp);
  return ret;
}

int get_tsr_gentime(unsigned char *tsr, int len, unsigned char *msg){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  TS_TST_INFO *ts_info = TS_RESP_get_tst_info(ts_resp);
  if (ts_resp==NULL)
    return 0;
  const ASN1_GENERALIZEDTIME *ts = TS_TST_INFO_get_time(ts_info);
  ret = ts->length;
  if (ret < 12)
    return 0;
  unsigned char *data = ts->data;
  int i;
  for (i=0;i<ret;i++){
    msg[i]=data[i];
  }
  TS_RESP_free(ts_resp);
  return ret;
}

int get_tsr_tsa(unsigned char *tsr, int len, unsigned char *msg, int msglen){
  int ret=0;
  const unsigned char *t = tsr;
  TS_RESP *ts_resp =  TS_RESP_new();
  d2i_TS_RESP(&ts_resp, &t, len);
  if (ts_resp==NULL)
    return 0;
  TS_TST_INFO *ts_info = TS_RESP_get_tst_info(ts_resp);
  GENERAL_NAME *name = TS_TST_INFO_get_tsa(ts_info);
  if (name==NULL)
    return 0;
  if (name->type == GEN_DIRNAME){
  //X509_NAME_oneline (X509_get_issuer_name (cert), issuer_DN, 255);
     X509_NAME_oneline(name->d.dirn,msg,msglen);
     return strlen(msg);
  }
  TS_RESP_free(ts_resp);
  return ret;
}

end-of-c-declare
)

;; Scheme bindings
(define (timestamp-tsr-save filename tsr)
  (if (and (string? filename) (u8vector? tsr))
    (let ((fname (string-append filename ".tsr")))
      (u8vector->file tsr fname)
      (file-exists? fname)
    )
    #f
  )
)

(define (timestamp-tsr-load filename)
  (let ((split (string-split filename #\.)))
    (if (and (fx>= (length split) 2) (string=? (car (reverse split)) "tsr"))
      (file->u8vector filename)
      #f
    )
  ))

(define (timestamp-tsr-getstatus tsr)
  ((c-lambda (scheme-object int) int "___result=
    get_tsr_status(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2);")
    tsr (u8vector-length tsr))
)
(define (timestamp-tsr-granted? tsr)
  (or (fx= (timestamp-tsr-getstatus tsr) 0) (fx= (timestamp-tsr-getstatus tsr) 1))
)

(define (timestamp-tsr-getstatusstr tsr)
  (let* ((v (make-u8vector 30))
         (f ((c-lambda (scheme-object int scheme-object) int "___result=
            get_tsr_statusstr(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2,
            ___CAST(unsigned char*,___BODY_AS(___arg3,___tSUBTYPED)));")
            tsr (u8vector-length tsr) v)))
    (if f (u8vector->string (subu8vector v 0 f)) #f)
  ))

(define (timestamp-tsr-getversion tsr)
 ((c-lambda (scheme-object int) int "___result=
   get_tsr_version(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2);")
   tsr (u8vector-length tsr))
)

(define (timestamp-tsr-getpolicy tsr)
 (let* ((v (make-u8vector 128))
        (f ((c-lambda (scheme-object int scheme-object) int "___result=
           get_tsr_policy(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2,
           ___CAST(unsigned char*,___BODY_AS(___arg3,___tSUBTYPED)));")
           tsr (u8vector-length tsr) v)))
    (if f (u8vector->string (subu8vector v 0 f)) #f)
  ))

(define (timestamp-tsr-getmessage tsr)
 (let* ((v (make-u8vector 100))
        (f ((c-lambda (scheme-object int scheme-object) int "___result=
           get_tsr_msg(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2,
           ___CAST(unsigned char*,___BODY_AS(___arg3,___tSUBTYPED)));")
           tsr (u8vector-length tsr) v)))
   (if f (subu8vector v 0 f) #f)
 ))

(define (timestamp-tsr-getserial tsr)
 (let* ((v (make-u8vector 100))
        (f ((c-lambda (scheme-object int scheme-object) int "___result=
           get_tsr_serial(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2,
           ___CAST(unsigned char*,___BODY_AS(___arg3,___tSUBTYPED)));")
           tsr (u8vector-length tsr) v)))
   (if f (subu8vector v 0 f) #f)
 ))

(define (timestamp-tsr-getgentimestr tsr)
 (let* ((v (make-u8vector 16))
        (f ((c-lambda (scheme-object int scheme-object) int "___result=
           get_tsr_gentime(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2,
           ___CAST(unsigned char*,___BODY_AS(___arg3,___tSUBTYPED)));")
           tsr (u8vector-length tsr) v)))
    (if f (u8vector->string (subu8vector v 0 f)) #f)
  ))
(define (timestamp-tsr-getepoch tsr)
  (string->seconds (timestamp-tsr-getgentimestr tsr) "%Y%m%d%H%M%S~z")
)

(define (timestamp-tsr-getaccuracy tsr)
 ((c-lambda (scheme-object int) double "___result=
   get_tsr_accuracy(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2);")
   tsr (u8vector-length tsr))
)

(define (timestamp-tsr-getordering tsr)
  ((c-lambda (scheme-object int) bool "___result=
    get_tsr_ordering(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2);")
    tsr (u8vector-length tsr))
)

(define (timestamp-tsr-getnonce tsr)
  ((c-lambda (scheme-object int) int "___result=
    get_tsr_nonce(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2);")
    tsr (u8vector-length tsr))
)

(define (timestamp-tsr-gettsa tsr)
 (let* ((v (make-u8vector 100))
        (f ((c-lambda (scheme-object int scheme-object int) int "___result=
           get_tsr_tsa(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2,
           ___CAST(unsigned char*,___BODY_AS(___arg3,___tSUBTYPED)),___arg4);")
           tsr (u8vector-length tsr) v (u8vector-length v))))
    (if f (u8vector->string (subu8vector v 0 f)) #f)
  ))

(define (timestamp:gettsr tsr)
    (let* ((v (make-u8vector 4096))
           (f ((c-lambda (scheme-object int scheme-object) int "___result=
              get_tsr(___CAST(unsigned char*,___BODY_AS(___arg1,___tSUBTYPED)),___arg2,
              ___CAST(unsigned char*,___BODY_AS(___arg3,___tSUBTYPED)));")
              tsr (u8vector-length tsr) v)))
      (if f (subu8vector v 0 f) #f)
))

;; eof