[taler-exchange] branch master updated: more careful use of TALER_JSON_get_error_code(), limit to cases where we expect to get one

[gnunet]

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grothoff pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new 6e3765d8 more careful use of TALER_JSON_get_error_code(), limit to 
cases where we expect to get one
6e3765d8 is described below

commit 6e3765d85253867fcc8cb6409ac65d0dd637c479
Author: Christian Grothoff <address@hidden>
AuthorDate: Tue Mar 10 18:51:08 2020 +0100

    more careful use of TALER_JSON_get_error_code(), limit to cases where we 
expect to get one
---
 src/include/taler_error_codes.h                    | 50 +++++++++++++++++-----
 src/lib/auditor_api_deposit_confirmation.c         | 15 +++++--
 src/lib/exchange_api_deposit.c                     | 18 ++++++--
 src/lib/exchange_api_deposits_get.c                | 14 +++++-
 src/lib/exchange_api_melt.c                        | 28 +++++++++---
 src/lib/exchange_api_refund.c                      | 19 ++++++--
 .../test_exchange_api_keys_cherry_picking.c        | 22 +++++-----
 ...xchange_api_keys_cherry_picking_extended_2.conf |  4 +-
 8 files changed, 132 insertions(+), 38 deletions(-)

diff --git a/src/include/taler_error_codes.h b/src/include/taler_error_codes.h
index 1c48fe33..44680444 100644
--- a/src/include/taler_error_codes.h
+++ b/src/include/taler_error_codes.h
@@ -213,7 +213,7 @@ enum TALER_ErrorCode
   TALER_EC_COINS_INVALID_COIN_PUB = 1050,
 
   /**
-   * The public key of given to a /reserves/ handler was malformed.
+   * The reserve key of given to a /reserves/ handler was malformed.
    */
   TALER_EC_RESERVES_INVALID_RESERVE_PUB = 1051,
 
@@ -223,33 +223,37 @@ enum TALER_ErrorCode
   TALER_EC_TRANSFERS_INVALID_WTID = 1052,
 
   /**
-   * The hash of the wire details of given to a /deposits/ handler was
-   * malformed.
+   * The wire hash of given to a /deposits/ handler was malformed.
    */
   TALER_EC_DEPOSITS_INVALID_H_WIRE = 1053,
 
   /**
-   * The merchant public key given to a /deposits/ handler was
-   * malformed.
+   * The merchant key of given to a /deposits/ handler was malformed.
    */
   TALER_EC_DEPOSITS_INVALID_MERCHANT_PUB = 1054,
 
   /**
-   * The hash of the contract given to a /deposits/ handler was
+   * The hash of the contract terms given to a /deposits/ handler was
    * malformed.
    */
   TALER_EC_DEPOSITS_INVALID_H_CONTRACT_TERMS = 1055,
 
   /**
-   * The coin public key given to a /deposits/ handler was malformed.
+   * The coin public key of given to a /deposits/ handler was malformed.
+   */
+  TALER_EC_DEPOSTIS_INVALID_COIN_PUB = 1056,
+
+  /**
+   * The body returned by the exchange for a /deposits/ request was
+   * malformed. Error created client-side.
    */
-  TALER_EC_DEPOSITS_INVALID_COIN_PUB = 1056,
+  TALER_EC_DEPOSITS_INVALID_BODY_BY_EXCHANGE = 1057,
 
   /**
-   * The hash of the refresh commitment given to a /refreshes/ handler
-   * was malformed.
+   * The signature returned by the exchange in a /deposits/ request was
+   * malformed. Error created client-side.
    */
-  TALER_EC_REFRESHES_INVALID_RCH = 1057,
+  TALER_EC_DEPOSITS_INVALID_SIGNATURE_BY_EXCHANGE = 1058,
 
   /**
    * The given reserve does not have sufficient funds to admit the
@@ -511,6 +515,12 @@ enum TALER_ErrorCode
    */
   TALER_EC_DEPOSIT_DENOMINATION_EXPIRED = 1220,
 
+  /**
+   * The signature provided by the exchange is not valid. Error created
+   * client-side.
+   */
+  TALER_EC_DEPOSIT_INVALID_SIGNATURE_BY_EXCHANGE = 1221,
+
   /**
    * The respective coin did not have sufficient residual value for the
    * /refresh/melt operation.  The "history" in this response provdes
@@ -584,6 +594,12 @@ enum TALER_ErrorCode
    */
   TALER_EC_REFRESH_MELT_COIN_EXPIRED_NO_ZOMBIE = 1309,
 
+  /**
+   * The signature returned by the exchange in a melt request was
+   * malformed. Error created client-side.
+   */
+  TALER_EC_MELT_INVALID_SIGNATURE_BY_EXCHANGE = 1310,
+
   /**
    * The exchange is unaware of the denomination key that was used to
    * sign the melted zombie coin.  This response is provided with HTTP
@@ -709,6 +725,12 @@ enum TALER_ErrorCode
    */
   TALER_EC_REFRESH_REVEAL_KEYS_MISSING = 1383,
 
+  /**
+   * The refresh session hash given to a /refreshes/ handler was
+   * malformed.
+   */
+  TALER_EC_REFRESHES_INVALID_RCH = 1384,
+
   /**
    * The coin specified in the link request is unknown to the exchange.
    * This response is provided with HTTP status code MHD_HTTP_NOT_FOUND.
@@ -821,6 +843,12 @@ enum TALER_ErrorCode
    */
   TALER_EC_REFUND_MERCHANT_SIGNING_FAILED = 1514,
 
+  /**
+   * The signature returned by the exchange in a refund request was
+   * malformed. Error created client-side.
+   */
+  TALER_EC_REFUND_INVALID_SIGNATURE_BY_EXCHANGE = 1515,
+
   /**
    * The wire format specified in the "sender_account_details" is not
    * understood or not supported by this exchange. Returned with an HTTP
diff --git a/src/lib/auditor_api_deposit_confirmation.c 
b/src/lib/auditor_api_deposit_confirmation.c
index ddaf9b7c..0aa9ff73 100644
--- a/src/lib/auditor_api_deposit_confirmation.c
+++ b/src/lib/auditor_api_deposit_confirmation.c
@@ -87,43 +87,52 @@ handle_deposit_confirmation_finished (void *cls,
 {
   const json_t *json = djson;
   struct TALER_AUDITOR_DepositConfirmationHandle *dh = cls;
+  enum TALER_ErrorCode ec;
 
   dh->job = NULL;
   switch (response_code)
   {
   case 0:
+    ec = TALER_EC_INVALID_RESPONSE;
     break;
   case MHD_HTTP_OK:
+    ec = TALER_EC_NONE;
     break;
   case MHD_HTTP_BAD_REQUEST:
+    ec = TALER_JSON_get_error_code (json);
     /* This should never happen, either us or the auditor is buggy
        (or API version conflict); just pass JSON reply to the application */
     break;
   case MHD_HTTP_FORBIDDEN:
+    ec = TALER_JSON_get_error_code (json);
     /* Nothing really to verify, auditor says one of the signatures is
        invalid; as we checked them, this should never happen, we
        should pass the JSON reply to the application */
     break;
   case MHD_HTTP_NOT_FOUND:
+    ec = TALER_JSON_get_error_code (json);
     /* Nothing really to verify, this should never
        happen, we should pass the JSON reply to the application */
     break;
   case MHD_HTTP_INTERNAL_SERVER_ERROR:
+    ec = TALER_JSON_get_error_code (json);
     /* Server had an internal issue; we should retry, but this API
        leaves this to the application */
     break;
   default:
     /* unexpected response code */
+    ec = TALER_JSON_get_error_code (json);
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Unexpected response code %u\n",
-                (unsigned int) response_code);
+                "Unexpected response code %u/%d\n",
+                (unsigned int) response_code,
+                ec);
     GNUNET_break (0);
     response_code = 0;
     break;
   }
   dh->cb (dh->cb_cls,
           response_code,
-          TALER_JSON_get_error_code (json),
+          ec,
           json);
   TALER_AUDITOR_deposit_confirmation_cancel (dh);
 }
diff --git a/src/lib/exchange_api_deposit.c b/src/lib/exchange_api_deposit.c
index 928a378b..a47790f9 100644
--- a/src/lib/exchange_api_deposit.c
+++ b/src/lib/exchange_api_deposit.c
@@ -301,11 +301,13 @@ handle_deposit_finished (void *cls,
   struct TALER_ExchangeSignatureP *es = NULL;
   struct TALER_ExchangePublicKeyP *ep = NULL;
   const json_t *j = response;
+  enum TALER_ErrorCode ec;
 
   dh->job = NULL;
   switch (response_code)
   {
   case 0:
+    ec = TALER_EC_INVALID_RESPONSE;
     break;
   case MHD_HTTP_OK:
     if (GNUNET_OK !=
@@ -316,52 +318,62 @@ handle_deposit_finished (void *cls,
     {
       GNUNET_break_op (0);
       response_code = 0;
+      ec = TALER_EC_DEPOSIT_INVALID_SIGNATURE_BY_EXCHANGE;
     }
     else
     {
       es = &exchange_sig;
       ep = &exchange_pub;
+      ec = TALER_EC_NONE;
     }
     break;
   case MHD_HTTP_BAD_REQUEST:
     /* This should never happen, either us or the exchange is buggy
        (or API version conflict); just pass JSON reply to the application */
+    ec = TALER_JSON_get_error_code (j);
     break;
   case MHD_HTTP_CONFLICT:
     /* Double spending; check signatures on transaction history */
+    ec = TALER_JSON_get_error_code (j);
     if (GNUNET_OK !=
         verify_deposit_signature_forbidden (dh,
                                             j))
     {
       GNUNET_break_op (0);
       response_code = 0;
+      ec = TALER_EC_DEPOSIT_INVALID_SIGNATURE_BY_EXCHANGE;
     }
     break;
   case MHD_HTTP_FORBIDDEN:
+    ec = TALER_JSON_get_error_code (j);
     /* Nothing really to verify, exchange says one of the signatures is
        invalid; as we checked them, this should never happen, we
        should pass the JSON reply to the application */
     break;
   case MHD_HTTP_NOT_FOUND:
+    ec = TALER_JSON_get_error_code (j);
     /* Nothing really to verify, this should never
        happen, we should pass the JSON reply to the application */
     break;
   case MHD_HTTP_INTERNAL_SERVER_ERROR:
+    ec = TALER_JSON_get_error_code (j);
     /* Server had an internal issue; we should retry, but this API
        leaves this to the application */
     break;
   default:
     /* unexpected response code */
+    ec = TALER_JSON_get_error_code (j);
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Unexpected response code %u\n",
-                (unsigned int) response_code);
+                "Unexpected response code %u/%d\n",
+                (unsigned int) response_code,
+                ec);
     GNUNET_break (0);
     response_code = 0;
     break;
   }
   dh->cb (dh->cb_cls,
           response_code,
-          TALER_JSON_get_error_code (j),
+          ec,
           es,
           ep,
           j);
diff --git a/src/lib/exchange_api_deposits_get.c 
b/src/lib/exchange_api_deposits_get.c
index bfacd178..02025013 100644
--- a/src/lib/exchange_api_deposits_get.c
+++ b/src/lib/exchange_api_deposits_get.c
@@ -151,11 +151,13 @@ handle_deposit_wtid_finished (void *cls,
   struct TALER_ExchangePublicKeyP exchange_pub;
   struct TALER_ExchangePublicKeyP *ep = NULL;
   const json_t *j = response;
+  enum TALER_ErrorCode ec;
 
   dwh->job = NULL;
   switch (response_code)
   {
   case 0:
+    ec = TALER_EC_INVALID_RESPONSE;
     break;
   case MHD_HTTP_OK:
     {
@@ -173,6 +175,7 @@ handle_deposit_wtid_finished (void *cls,
       {
         GNUNET_break_op (0);
         response_code = 0;
+        ec = TALER_EC_DEPOSITS_INVALID_BODY_BY_EXCHANGE;
         break;
       }
       wtid = &dwh->depconf.wtid;
@@ -187,10 +190,12 @@ handle_deposit_wtid_finished (void *cls,
       {
         GNUNET_break_op (0);
         response_code = 0;
+        ec = TALER_EC_DEPOSITS_INVALID_SIGNATURE_BY_EXCHANGE;
       }
       else
       {
         ep = &exchange_pub;
+        ec = TALER_EC_NONE;
       }
     }
     break;
@@ -209,24 +214,30 @@ handle_deposit_wtid_finished (void *cls,
       {
         GNUNET_break_op (0);
         response_code = 0;
+        ec = TALER_EC_DEPOSITS_INVALID_BODY_BY_EXCHANGE;
         break;
       }
+      ec = TALER_EC_NONE;
     }
     break;
   case MHD_HTTP_BAD_REQUEST:
+    ec = TALER_JSON_get_error_code (j);
     /* This should never happen, either us or the exchange is buggy
        (or API version conflict); just pass JSON reply to the application */
     break;
   case MHD_HTTP_FORBIDDEN:
+    ec = TALER_JSON_get_error_code (j);
     /* Nothing really to verify, exchange says one of the signatures is
        invalid; as we checked them, this should never happen, we
        should pass the JSON reply to the application */
     break;
   case MHD_HTTP_NOT_FOUND:
+    ec = TALER_JSON_get_error_code (j);
     /* Exchange does not know about transaction;
        we should pass the reply to the application */
     break;
   case MHD_HTTP_INTERNAL_SERVER_ERROR:
+    ec = TALER_JSON_get_error_code (j);
     /* Server had an internal issue; we should retry, but this API
        leaves this to the application */
     break;
@@ -236,12 +247,13 @@ handle_deposit_wtid_finished (void *cls,
                 "Unexpected response code %u\n",
                 (unsigned int) response_code);
     GNUNET_break (0);
+    ec = TALER_JSON_get_error_code (j);
     response_code = 0;
     break;
   }
   dwh->cb (dwh->cb_cls,
            response_code,
-           TALER_JSON_get_error_code (j),
+           ec,
            ep,
            j,
            wtid,
diff --git a/src/lib/exchange_api_melt.c b/src/lib/exchange_api_melt.c
index 39d9d4e0..621e9e1d 100644
--- a/src/lib/exchange_api_melt.c
+++ b/src/lib/exchange_api_melt.c
@@ -267,11 +267,13 @@ handle_melt_finished (void *cls,
   uint32_t noreveal_index = TALER_CNC_KAPPA; /* invalid value */
   struct TALER_ExchangePublicKeyP exchange_pub;
   const json_t *j = response;
+  enum TALER_ErrorCode ec;
 
   mh->job = NULL;
   switch (response_code)
   {
   case 0:
+    ec = TALER_EC_INVALID_RESPONSE;
     break;
   case MHD_HTTP_OK:
     if (GNUNET_OK !=
@@ -282,19 +284,27 @@ handle_melt_finished (void *cls,
     {
       GNUNET_break_op (0);
       response_code = 0;
+      ec = TALER_EC_MELT_INVALID_SIGNATURE_BY_EXCHANGE;
+    }
+    else
+    {
+      ec = TALER_EC_NONE;
     }
     if (NULL != mh->melt_cb)
     {
       mh->melt_cb (mh->melt_cb_cls,
                    response_code,
-                   TALER_JSON_get_error_code (j),
+                   ec,
                    noreveal_index,
-                   (0 == response_code) ? NULL : &exchange_pub,
+                   (0 == response_code)
+                   ? NULL
+                   : &exchange_pub,
                    j);
       mh->melt_cb = NULL;
     }
     break;
   case MHD_HTTP_BAD_REQUEST:
+    ec = TALER_JSON_get_error_code (j);
     /* This should never happen, either us or the exchange is buggy
        (or API version conflict); just pass JSON reply to the application */
     break;
@@ -306,26 +316,34 @@ handle_melt_finished (void *cls,
     {
       GNUNET_break_op (0);
       response_code = 0;
+      ec = TALER_EC_MELT_INVALID_SIGNATURE_BY_EXCHANGE;
     }
+    else
+      ec = TALER_EC_NONE;
     break;
   case MHD_HTTP_FORBIDDEN:
+    ec = TALER_JSON_get_error_code (j);
     /* Nothing really to verify, exchange says one of the signatures is
        invalid; assuming we checked them, this should never happen, we
        should pass the JSON reply to the application */
     break;
   case MHD_HTTP_NOT_FOUND:
+    ec = TALER_JSON_get_error_code (j);
     /* Nothing really to verify, this should never
        happen, we should pass the JSON reply to the application */
     break;
   case MHD_HTTP_INTERNAL_SERVER_ERROR:
+    ec = TALER_JSON_get_error_code (j);
     /* Server had an internal issue; we should retry, but this API
        leaves this to the application */
     break;
   default:
     /* unexpected response code */
+    ec = TALER_JSON_get_error_code (j);
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Unexpected response code %u\n",
-                (unsigned int) response_code);
+                "Unexpected response code %u/%d\n",
+                (unsigned int) response_code,
+                ec);
     GNUNET_break (0);
     response_code = 0;
     break;
@@ -333,7 +351,7 @@ handle_melt_finished (void *cls,
   if (NULL != mh->melt_cb)
     mh->melt_cb (mh->melt_cb_cls,
                  response_code,
-                 TALER_JSON_get_error_code (j),
+                 ec,
                  UINT32_MAX,
                  NULL,
                  j);
diff --git a/src/lib/exchange_api_refund.c b/src/lib/exchange_api_refund.c
index d14481e7..826c39b1 100644
--- a/src/lib/exchange_api_refund.c
+++ b/src/lib/exchange_api_refund.c
@@ -145,11 +145,13 @@ handle_refund_finished (void *cls,
   struct TALER_ExchangePublicKeyP exchange_pub;
   struct TALER_ExchangePublicKeyP *ep = NULL;
   const json_t *j = response;
+  enum TALER_ErrorCode ec;
 
   rh->job = NULL;
   switch (response_code)
   {
   case 0:
+    ec = TALER_EC_INVALID_RESPONSE;
     break;
   case MHD_HTTP_OK:
     if (GNUNET_OK !=
@@ -159,53 +161,64 @@ handle_refund_finished (void *cls,
     {
       GNUNET_break_op (0);
       response_code = 0;
+      ec = TALER_EC_REFUND_INVALID_SIGNATURE_BY_EXCHANGE;
     }
     else
     {
       ep = &exchange_pub;
+      ec = TALER_EC_NONE;
     }
     break;
   case MHD_HTTP_BAD_REQUEST:
     /* This should never happen, either us or the exchange is buggy
        (or API version conflict); just pass JSON reply to the application */
+    ec = TALER_JSON_get_error_code (j);
     break;
   case MHD_HTTP_FORBIDDEN:
     /* Nothing really to verify, exchange says one of the signatures is
        invalid; as we checked them, this should never happen, we
        should pass the JSON reply to the application */
+    ec = TALER_JSON_get_error_code (j);
     break;
   case MHD_HTTP_NOT_FOUND:
     /* Nothing really to verify, this should never
        happen, we should pass the JSON reply to the application */
+    ec = TALER_JSON_get_error_code (j);
     break;
   case MHD_HTTP_GONE:
     /* Kind of normal: the money was already sent to the merchant
        (it was too late for the refund). */
+    ec = TALER_JSON_get_error_code (j);
     break;
   case MHD_HTTP_PRECONDITION_FAILED:
     /* Client request was inconsistent; might be a currency mismatch
        problem.  */
+    ec = TALER_JSON_get_error_code (j);
     break;
   case MHD_HTTP_CONFLICT:
     /* Two refund requests were made about the same deposit, but
        carrying different refund transaction ids.  */
+    ec = TALER_JSON_get_error_code (j);
     break;
   case MHD_HTTP_INTERNAL_SERVER_ERROR:
     /* Server had an internal issue; we should retry, but this API
        leaves this to the application */
+    ec = TALER_JSON_get_error_code (j);
     break;
   default:
     /* unexpected response code */
+    ec = TALER_JSON_get_error_code (j);
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Unexpected response code %u\n",
-                (unsigned int) response_code);
+                "Unexpected response code %u/%d\n",
+                (unsigned int) response_code,
+                ec);
     GNUNET_break (0);
     response_code = 0;
     break;
   }
   rh->cb (rh->cb_cls,
           response_code,
-          TALER_JSON_get_error_code (j),
+          ec,
           ep,
           j);
   TALER_EXCHANGE_refund_cancel (rh);
diff --git a/src/testing/test_exchange_api_keys_cherry_picking.c 
b/src/testing/test_exchange_api_keys_cherry_picking.c
index a9f6e3d8..47a6472a 100644
--- a/src/testing/test_exchange_api_keys_cherry_picking.c
+++ b/src/testing/test_exchange_api_keys_cherry_picking.c
@@ -3,7 +3,8 @@
   Copyright (C) 2018 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
+  under the terms of the GNU General Public License as pub
+lished
   by the Free Software Foundation; either version 3, or (at your
   option) any later version.
 
@@ -53,7 +54,7 @@
   "test_exchange_api_keys_cherry_picking_extended_2.conf"
 
 
-#define NDKS_RIGHT_BEFORE_SERIALIZATION 46
+#define NDKS_RIGHT_BEFORE_SERIALIZATION 40
 
 /**
  * Add seconds.
@@ -187,20 +188,21 @@ run (void *cls,
     /**
      * Expected number of DK:
      *
-     * 3500 (the lookahead_sign time frame, in seconds)
-     * - 69 (how many seconds are covered by the latest DK)
+     * 3000 (the lookahead_sign time frame, in seconds)
+     * - 69 (how many seconds are covered by the latest DK, 79s - 10s already 
past)
      * ----
-     * 3431
-     * / 79 (how many seconds each DK will cover)
+     * 2931
+     * / 79 (how many seconds each DK will cover, 80-1)
      * ----
-     *   44 (rounded up)
+     *   38 (rounded up)
      *  + 2 (old DKs already stored locally: 1 from the
      *       very initial setup, and 1 from the 'keyup-1' CMD)
      * ----
-     *   46
-     */TALER_TESTING_cmd_check_keys_with_now
+     *   40
+     *///
+    TALER_TESTING_cmd_check_keys_with_now
       ("check-keys-3",
-      3,
+      3 /* generation */,
       NDKS_RIGHT_BEFORE_SERIALIZATION,
       TTH_parse_time (JAN2030)),
 
diff --git a/src/testing/test_exchange_api_keys_cherry_picking_extended_2.conf 
b/src/testing/test_exchange_api_keys_cherry_picking_extended_2.conf
index 8097a6cd..9ba5c618 100644
--- a/src/testing/test_exchange_api_keys_cherry_picking_extended_2.conf
+++ b/src/testing/test_exchange_api_keys_cherry_picking_extended_2.conf
@@ -1,5 +1,5 @@
 @INLINE@ test_exchange_api_keys_cherry_picking_extended.conf
 
 [exchange]
-# Lengthen over firstly extended value (100 s)
-LOOKAHEAD_SIGN = 3500 s
+# Lengthen over firstly extended value (90 s)
+LOOKAHEAD_SIGN = 3000 s

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