donau

commit 411384d5ce179fd17e6bfdf2630c95a2ba3eccb6
parent a1db20bd9e9415bb1817cbfd9867b49cb930e3d1
Author: Casaburi Johannes <johannes.casaburi@students.bfh.ch>
Date:   Sun, 28 Apr 2024 15:38:31 +0200

work in donau-httpd_batch-submit

Diffstat:
M
src/donau/donau-httpd_batch-submit.c
 | 
54
+++++++++++++++++++++++++++++++++++-------------------
M
src/include/donau_crypto_lib.h
 | 
18
+++++++++++++++---
M
src/util/donau_crypto.c
 | 
28
+++++++++++++++++++++++++---

3 files changed, 75 insertions(+), 25 deletions(-)
diff --git a/src/donau/donau-httpd_batch-submit.c b/src/donau/donau-httpd_batch-submit.c
@@ -29,8 +29,7 @@
 #include "taler/taler_signatures.h"
 #include "donaudb_plugin.h"
 #include "donau-httpd_batch-submit.h"
-#include "donau-httpd_db.h"
-#include "donau-httpd_metrics.h"
+#include "donau-httpd_keys.h"
 
 
 /**
@@ -144,26 +143,45 @@ DH_handler_submit_receipts_post (struct DH_RequestContext *rc,
     }
   }
 
-  // du_iter_qs = DH_plugin->iterate_donation_units (DH_plugin->cls,
-  //                                         &donation_unit_info_cb,
-  //                                         NULL);
-//
-// if (du_iter_qs < 0)
-// {
-//   GNUNET_break (0);
-//   // FIXME change error message
-//   return TALER_MHD_reply_with_error (rc->connection,
-//                                      MHD_HTTP_INTERNAL_SERVER_ERROR,
-//                                      TALER_EC_GENERIC_DB_FETCH_FAILED,
-//                                      "donation_units");
-// }
-
   for (size_t i = 0; i < num_dr; i++)
   {
-    // FIXME Check sigs, Donation unit hashes, nonce
+    // FIXME Check nonce
+    struct DONAU_UniqueDonorIdentifierHashP udi_hash;
+    struct DH_DonationUnitKey *dk;
+
+    if (NULL == (dk = DH_keys_donation_unit_by_hash (
+                   &irc.donation_receipts[i].h_donation_unit_pub)))
+    {
+      return TALER_MHD_reply_with_error (rc->connection,
+                                         MHD_HTTP_NOT_FOUND,
+                                         TALER_EC_DONAU_GENERIC_KEYS_MISSING,
+                                         NULL);
+    }
+
+    DONAU_unique_donor_id_hash (
+      irc.h_donor_tax_id,
+      &irc.donation_receipts[i].nonce,
+      &udi_hash);
+
+    /* Check signature*/
+    if (GNUNET_OK != DONAU_donation_receipt_verify (
+          &dk->donation_unit_pub,
+          &udi_hash,
+          &irc.donation_receipts[i].donation_unit_sig))
+    {
+      // FIXME change error message
+      return TALER_MHD_reply_with_error (rc->connection,
+                                         MHD_HTTP_NOT_FOUND,
+                                         TALER_EC_DONAU_GENERIC_KEYS_MISSING,
+                                         NULL);
 
+    }
   }
 
+  // FIXME
+  // Fetch donation receipts and join with donation units to get amount
+  // then create donation statement
+
   enum GNUNET_DB_QueryStatus qs;
 
   qs = DH_plugin->insert_submitted_receipts (
@@ -184,8 +202,6 @@ DH_handler_submit_receipts_post (struct DH_RequestContext *rc,
   }
 
   // FIXME
-  // Fetch donation receipts and join with donation units to get amount
-  // then create donation statement
   // Send back DS
 
   return MHD_HTTP_OK;
diff --git a/src/include/donau_crypto_lib.h b/src/include/donau_crypto_lib.h
@@ -425,6 +425,8 @@ DONAU_donation_statement_verify (
   const struct DONAU_DonauSignatureP *statement_sig);
 
 
+///* ********************* donau blind signing ************************** */
+
 /**
  * Verify donation receipt.
  *
@@ -440,9 +442,6 @@ DONAU_donation_receipt_verify (
   const struct DONAU_DonationUnitSignature *donation_unit_sig);
 
 
-///* ********************* donau blind signing ************************** */
-
-
 /**
  * Free internals of @a donation_unit_sig, but not @a donation_unit_sig itself.
  *
@@ -627,5 +626,18 @@ struct TALER_DonauBatchIssueValues
   struct GNUNET_CRYPTO_BlindingInputValues *blinding_inputs;
 };
 
+/**
+ * Compute the hash of a Unique Donor Identifier.
+ *
+ * @param h_donor_tax_id hash of the tax id
+ * @param nonce that makes the Donor Identifier unique
+ * @param[out] h_udi where to write the hash
+ */
+void
+DONAU_unique_donor_id_hash (const struct DONAU_HashDonorTaxId *h_donor_tax_id,
+                            const struct DONAU_UniqueDonorIdentifierNonce *nonce
+                            ,
+                            struct DONAU_UniqueDonorIdentifierHashP *h_udi);
+
 
 #endif
diff --git a/src/util/donau_crypto.c b/src/util/donau_crypto.c
@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  Copyright (C) 2014-2022 Taler Systems SA
+  Copyright (C) 2024 Taler Systems SA
 
   TALER is free software; you can redistribute it and/or modify it under the
   terms of the GNU General Public License as published by the Free Software
@@ -138,6 +138,29 @@ DONAU_donation_unit_pub_hash (
 }
 
 
+void
+DONAU_unique_donor_id_hash (const struct DONAU_HashDonorTaxId *h_donor_tax_id,
+                            const struct DONAU_UniqueDonorIdentifierNonce *nonce
+                            ,
+                            struct DONAU_UniqueDonorIdentifierHashP *h_udi)
+{
+  struct GNUNET_HashContext *hash_context;
+  hash_context = GNUNET_CRYPTO_hash_context_start ();
+
+  GNUNET_CRYPTO_hash_context_read (
+    hash_context,
+    h_donor_tax_id,
+    sizeof(struct DONAU_HashDonorTaxId));
+  GNUNET_CRYPTO_hash_context_read (
+    hash_context,
+    nonce,
+    sizeof(struct DONAU_UniqueDonorIdentifierNonce));
+  GNUNET_CRYPTO_hash_context_finish (
+    hash_context,
+    &h_udi->hash);
+}
+
+
 enum GNUNET_GenericReturnValue
 DONAU_donation_receipt_verify (
   const struct DONAU_DonationUnitPublicKey *donation_unit_pub,
@@ -148,4 +171,4 @@ DONAU_donation_receipt_verify (
                                          donation_unit_sig->unblinded_sig,
                                          h_udi,
                                          sizeof (*h_udi));
-}
-\ No newline at end of file
+}