-more exchange API atomization

src/include/taler_exchange_service.h

@@ -3286,7 +3286,8 @@ typedef void
  * This API is typically not used by anyone, it is more a threat against those
  * trying to receive a funds transfer by abusing the refresh protocol.
  *
- * @param exchange the exchange handle; the exchange must be ready to operate
+ * @param ctx CURL context
+ * @param url exchange base URL
  * @param coin_priv private key to request link data for
  * @param age_commitment_proof age commitment to the corresponding coin, might be NULL
  * @param link_cb the callback to call with the useful result of the
@@ -3296,7 +3297,8 @@ typedef void
  */
 struct TALER_EXCHANGE_LinkHandle *
 TALER_EXCHANGE_link (
-  struct TALER_EXCHANGE_Handle *exchange,
+  struct GNUNET_CURL_Context *ctx,
+  const char *url,
   const struct TALER_CoinSpendPrivateKeyP *coin_priv,
   const struct TALER_AgeCommitmentProof *age_commitment_proof,
   TALER_EXCHANGE_LinkCallback link_cb,
@@ -4025,7 +4027,8 @@ struct TALER_EXCHANGE_KycProofHandle;
 /**
  * Run interaction with exchange to provide proof of KYC status.
  *
- * @param eh exchange handle to use
+ * @param ctx CURL context
+ * @param url exchange base URL
  * @param h_payto hash of payto URI identifying the target account
  * @param logic name of the KYC logic to run
  * @param args additional args to pass, can be NULL
@@ -4035,7 +4038,9 @@ struct TALER_EXCHANGE_KycProofHandle;
  * @return NULL on error
  */
 struct TALER_EXCHANGE_KycProofHandle *
-TALER_EXCHANGE_kyc_proof (struct TALER_EXCHANGE_Handle *eh,
+TALER_EXCHANGE_kyc_proof (
+  struct GNUNET_CURL_Context *ctx,
+  const char *url,
   const struct TALER_PaytoHashP *h_payto,
   const char *logic,
   const char *args,
@@ -4118,7 +4123,8 @@ typedef void
  * Run interaction with exchange to find out the wallet's KYC
  * identifier.
  *
- * @param eh exchange handle to use
+ * @param ctx CURL context
+ * @param url exchange base URL
  * @param reserve_priv wallet private key to check
  * @param balance balance (or balance threshold) crossed by the wallet
  * @param cb function to call with the result
@@ -4126,7 +4132,9 @@ typedef void
  * @return NULL on error
  */
 struct TALER_EXCHANGE_KycWalletHandle *
-TALER_EXCHANGE_kyc_wallet (struct TALER_EXCHANGE_Handle *eh,
+TALER_EXCHANGE_kyc_wallet (
+  struct GNUNET_CURL_Context *ctx,
+  const char *url,
   const struct TALER_ReservePrivateKeyP *reserve_priv,
   const struct TALER_Amount *balance,
   TALER_EXCHANGE_KycWalletCallback cb,
@@ -6250,7 +6258,7 @@ struct TALER_EXCHANGE_PurseCreateMergeResponse
   union
   {
     /**
-     * Detailed returned on #MHD_HTTP_OK.
+     * Details returned on #MHD_HTTP_OK.
      */
     struct
     {
@@ -6746,7 +6754,8 @@ typedef void
 /**
  * Submit a request to attest attributes about the owner of a reserve.
  *
- * @param exchange the exchange handle; the exchange must be ready to operate
+ * @param ctx CURL context
+ * @param url exchange base URL
  * @param reserve_priv private key of the reserve to attest
  * @param attributes_length length of the @a attributes array
  * @param attributes array of names of attributes to get attestations for
@@ -6757,7 +6766,8 @@ typedef void
  */
 struct TALER_EXCHANGE_ReservesAttestHandle *
 TALER_EXCHANGE_reserves_attest (
-  struct TALER_EXCHANGE_Handle *exchange,
+  struct GNUNET_CURL_Context *ctx,
+  const char *url,
   const struct TALER_ReservePrivateKeyP *reserve_priv,
   unsigned int attributes_length,
   const char *const*attributes,

src/lib/exchange_api_kyc_proof.c

@@ -36,11 +36,6 @@
 struct TALER_EXCHANGE_KycProofHandle
 {
 
-  /**
-   * The connection to exchange this request handle will use
-   */
-  struct TALER_EXCHANGE_Handle *exchange;
-
   /**
    * The url for this request.
    */
@@ -140,7 +135,9 @@ handle_kyc_proof_finished (void *cls,
 
 
 struct TALER_EXCHANGE_KycProofHandle *
-TALER_EXCHANGE_kyc_proof (struct TALER_EXCHANGE_Handle *exchange,
+TALER_EXCHANGE_kyc_proof (
+  struct GNUNET_CURL_Context *ctx,
+  const char *url,
   const struct TALER_PaytoHashP *h_payto,
   const char *logic,
   const char *args,
@@ -148,19 +145,12 @@ TALER_EXCHANGE_kyc_proof (struct TALER_EXCHANGE_Handle *exchange,
   void *cb_cls)
 {
   struct TALER_EXCHANGE_KycProofHandle *kph;
-  struct GNUNET_CURL_Context *ctx;
   char *arg_str;
 
   if (NULL == args)
     args = "";
   else
     GNUNET_assert (args[0] == '&');
-  if (GNUNET_YES !=
-      TEAH_handle_is_ready (exchange))
-  {
-    GNUNET_break (0);
-    return NULL;
-  }
   {
     char hstr[sizeof (struct TALER_PaytoHashP) * 2];
     char *end;
@@ -171,17 +161,17 @@ TALER_EXCHANGE_kyc_proof (struct TALER_EXCHANGE_Handle *exchange,
                                          sizeof (hstr));
     *end = '\0';
     GNUNET_asprintf (&arg_str,
-                     "/kyc-proof/%s?state=%s%s",
+                     "kyc-proof/%s?state=%s%s",
                      logic,
                      hstr,
                      args);
   }
   kph = GNUNET_new (struct TALER_EXCHANGE_KycProofHandle);
-  kph->exchange = exchange;
   kph->cb = cb;
   kph->cb_cls = cb_cls;
-  kph->url = TEAH_path_to_url (exchange,
+  kph->url = TALER_url_join (url,
-                               arg_str);
+                             arg_str,
+                             NULL);
   GNUNET_free (arg_str);
   if (NULL == kph->url)
   {
@@ -202,7 +192,6 @@ TALER_EXCHANGE_kyc_proof (struct TALER_EXCHANGE_Handle *exchange,
                  curl_easy_setopt (kph->eh,
                                    CURLOPT_FOLLOWLOCATION,
                                    0L));
-  ctx = TEAH_handle_to_context (exchange);
   kph->job = GNUNET_CURL_job_add_raw (ctx,
                                       kph->eh,
                                       NULL,

src/lib/exchange_api_kyc_wallet.c

@@ -42,11 +42,6 @@ struct TALER_EXCHANGE_KycWalletHandle
    */
   struct TALER_CURL_PostContext ctx;
 
-  /**
-   * The connection to exchange this request handle will use
-   */
-  struct TALER_EXCHANGE_Handle *exchange;
-
   /**
    * The url for this request.
    */
@@ -154,7 +149,9 @@ handle_kyc_wallet_finished (void *cls,
 
 
 struct TALER_EXCHANGE_KycWalletHandle *
-TALER_EXCHANGE_kyc_wallet (struct TALER_EXCHANGE_Handle *exchange,
+TALER_EXCHANGE_kyc_wallet (
+  struct GNUNET_CURL_Context *ctx,
+  const char *url,
   const struct TALER_ReservePrivateKeyP *reserve_priv,
   const struct TALER_Amount *balance,
   TALER_EXCHANGE_KycWalletCallback cb,
@@ -163,7 +160,6 @@ TALER_EXCHANGE_kyc_wallet (struct TALER_EXCHANGE_Handle *exchange,
   struct TALER_EXCHANGE_KycWalletHandle *kwh;
   CURL *eh;
   json_t *req;
-  struct GNUNET_CURL_Context *ctx;
   struct TALER_ReservePublicKeyP reserve_pub;
   struct TALER_ReserveSignatureP reserve_sig;
 
@@ -181,18 +177,17 @@ TALER_EXCHANGE_kyc_wallet (struct TALER_EXCHANGE_Handle *exchange,
                                 &reserve_sig));
   GNUNET_assert (NULL != req);
   kwh = GNUNET_new (struct TALER_EXCHANGE_KycWalletHandle);
-  kwh->exchange = exchange;
   kwh->cb = cb;
   kwh->cb_cls = cb_cls;
-  kwh->url = TEAH_path_to_url (exchange,
+  kwh->url = TALER_url_join (url,
-                               "/kyc-wallet");
+                             "kyc-wallet",
+                             NULL);
   if (NULL == kwh->url)
   {
     json_decref (req);
     GNUNET_free (kwh);
     return NULL;
   }
-  ctx = TEAH_handle_to_context (exchange);
   eh = TALER_EXCHANGE_curl_easy_get_ (kwh->url);
   if ( (NULL == eh) ||
        (GNUNET_OK !=

src/lib/exchange_api_link.c

@@ -447,7 +447,8 @@ handle_link_finished (void *cls,
 
 struct TALER_EXCHANGE_LinkHandle *
 TALER_EXCHANGE_link (
-  struct TALER_EXCHANGE_Handle *exchange,
+  struct GNUNET_CURL_Context *ctx,
+  const char *url,
   const struct TALER_CoinSpendPrivateKeyP *coin_priv,
   const struct TALER_AgeCommitmentProof *age_commitment_proof,
   TALER_EXCHANGE_LinkCallback link_cb,
@@ -455,17 +456,9 @@ TALER_EXCHANGE_link (
 {
   struct TALER_EXCHANGE_LinkHandle *lh;
   CURL *eh;
-  struct GNUNET_CURL_Context *ctx;
   struct TALER_CoinSpendPublicKeyP coin_pub;
   char arg_str[sizeof (struct TALER_CoinSpendPublicKeyP) * 2 + 32];
 
-  if (GNUNET_YES !=
-      TEAH_handle_is_ready (exchange))
-  {
-    GNUNET_break (0);
-    return NULL;
-  }
-
   GNUNET_CRYPTO_eddsa_key_get_public (&coin_priv->eddsa_priv,
                                       &coin_pub.eddsa_pub);
   {
@@ -480,7 +473,7 @@ TALER_EXCHANGE_link (
     *end = '\0';
     GNUNET_snprintf (arg_str,
                      sizeof (arg_str),
-                     "/coins/%s/link",
+                     "coins/%s/link",
                      pub_str);
   }
   lh = GNUNET_new (struct TALER_EXCHANGE_LinkHandle);
@@ -488,8 +481,9 @@ TALER_EXCHANGE_link (
   lh->link_cb_cls = link_cb_cls;
   lh->coin_priv = *coin_priv;
   lh->age_commitment_proof = age_commitment_proof;
-  lh->url = TEAH_path_to_url (exchange,
+  lh->url = TALER_url_join (url,
-                              arg_str);
+                            arg_str,
+                            NULL);
   if (NULL == lh->url)
   {
     GNUNET_free (lh);
@@ -503,7 +497,6 @@ TALER_EXCHANGE_link (
     GNUNET_free (lh);
     return NULL;
   }
-  ctx = TEAH_handle_to_context (exchange);
   lh->job = GNUNET_CURL_job_add_with_ct_json (ctx,
                                               eh,
                                               &handle_link_finished,

src/lib/exchange_api_reserves_attest.c

@@ -38,11 +38,6 @@
 struct TALER_EXCHANGE_ReservesAttestHandle
 {
 
-  /**
-   * The connection to exchange this request handle will use
-   */
-  struct TALER_EXCHANGE_Handle *exchange;
-
   /**
    * The url for this request.
    */
@@ -131,6 +126,8 @@ handle_reserves_attest_ok (struct TALER_EXCHANGE_ReservesAttestHandle *rsh,
     GNUNET_JSON_parse_free (spec);
     return GNUNET_SYSERR;
   }
+  /* FIXME: validate exchange_pub is actually
+     a good exchange signing key */
   rsh->cb (rsh->cb_cls,
            &rs);
   rsh->cb = NULL;
@@ -228,7 +225,8 @@ handle_reserves_attest_finished (void *cls,
 
 struct TALER_EXCHANGE_ReservesAttestHandle *
 TALER_EXCHANGE_reserves_attest (
-  struct TALER_EXCHANGE_Handle *exchange,
+  struct GNUNET_CURL_Context *ctx,
+  const char *url,
   const struct TALER_ReservePrivateKeyP *reserve_priv,
   unsigned int attributes_length,
   const char *const*attributes,
@@ -236,7 +234,6 @@ TALER_EXCHANGE_reserves_attest (
   void *cb_cls)
 {
   struct TALER_EXCHANGE_ReservesAttestHandle *rsh;
-  struct GNUNET_CURL_Context *ctx;
   CURL *eh;
   char arg_str[sizeof (struct TALER_ReservePublicKeyP) * 2 + 32];
   struct TALER_ReserveSignatureP reserve_sig;
@@ -248,12 +245,6 @@ TALER_EXCHANGE_reserves_attest (
     GNUNET_break (0);
     return NULL;
   }
-  if (GNUNET_YES !=
-      TEAH_handle_is_ready (exchange))
-  {
-    GNUNET_break (0);
-    return NULL;
-  }
   details = json_array ();
   GNUNET_assert (NULL != details);
   for (unsigned int i = 0; i<attributes_length; i++)
@@ -263,7 +254,6 @@ TALER_EXCHANGE_reserves_attest (
                                           json_string (attributes[i])));
   }
   rsh = GNUNET_new (struct TALER_EXCHANGE_ReservesAttestHandle);
-  rsh->exchange = exchange;
   rsh->cb = cb;
   rsh->cb_cls = cb_cls;
   GNUNET_CRYPTO_eddsa_key_get_public (&reserve_priv->eddsa_priv,
@@ -280,11 +270,12 @@ TALER_EXCHANGE_reserves_attest (
     *end = '\0';
     GNUNET_snprintf (arg_str,
                      sizeof (arg_str),
-                     "/reserves-attest/%s",
+                     "reserves-attest/%s",
                      pub_str);
   }
-  rsh->url = TEAH_path_to_url (exchange,
+  rsh->url = TALER_url_join (url,
-                               arg_str);
+                             arg_str,
+                             NULL);
   if (NULL == rsh->url)
   {
     json_decref (details);
@@ -328,7 +319,6 @@ TALER_EXCHANGE_reserves_attest (
     }
     json_decref (attest_obj);
   }
-  ctx = TEAH_handle_to_context (exchange);
   rsh->job = GNUNET_CURL_job_add2 (ctx,
                                    eh,
                                    rsh->post_ctx.headers,

src/testing/testing_api_cmd_kyc_proof.c

@@ -127,13 +127,16 @@ proof_kyc_run (void *cls,
   const struct TALER_TESTING_Command *res_cmd;
   const struct TALER_PaytoHashP *h_payto;
   char *uargs;
-  struct TALER_EXCHANGE_Handle *exchange
+  const char *exchange_url;
-    = TALER_TESTING_get_exchange (is);
 
   (void) cmd;
-  if (NULL == exchange)
-    return;
   kps->is = is;
+  exchange_url = TALER_TESTING_get_exchange_url (is);
+  if (NULL == exchange_url)
+  {
+    GNUNET_break (0);
+    return;
+  }
   res_cmd = TALER_TESTING_interpreter_lookup_command (
     kps->is,
     kps->payment_target_reference);
@@ -157,7 +160,9 @@ proof_kyc_run (void *cls,
     GNUNET_asprintf (&uargs,
                      "&code=%s",
                      kps->code);
-  kps->kph = TALER_EXCHANGE_kyc_proof (exchange,
+  kps->kph = TALER_EXCHANGE_kyc_proof (
+    TALER_TESTING_interpreter_get_context (is),
+    exchange_url,
     h_payto,
     kps->logic,
     uargs,

src/testing/testing_api_cmd_kyc_wallet_get.c

@@ -147,13 +147,16 @@ wallet_kyc_run (void *cls,
                 struct TALER_TESTING_Interpreter *is)
 {
   struct KycWalletGetState *kwg = cls;
-  struct TALER_EXCHANGE_Handle *exchange
+  const char *exchange_url;
-    = TALER_TESTING_get_exchange (is);
 
   kwg->cmd = cmd;
-  if (NULL == exchange)
-    return;
   kwg->is = is;
+  exchange_url = TALER_TESTING_get_exchange_url (is);
+  if (NULL == exchange_url)
+  {
+    GNUNET_break (0);
+    return;
+  }
   if (NULL != kwg->reserve_reference)
   {
     const struct TALER_TESTING_Command *res_cmd;
@@ -185,9 +188,11 @@ wallet_kyc_run (void *cls,
   GNUNET_CRYPTO_eddsa_key_get_public (&kwg->reserve_priv.eddsa_priv,
                                       &kwg->reserve_pub.eddsa_pub);
   kwg->reserve_payto_uri
-    = TALER_reserve_make_payto (TALER_EXCHANGE_get_base_url (exchange),
+    = TALER_reserve_make_payto (exchange_url,
                                 &kwg->reserve_pub);
-  kwg->kwh = TALER_EXCHANGE_kyc_wallet (exchange,
+  kwg->kwh = TALER_EXCHANGE_kyc_wallet (
+    TALER_TESTING_interpreter_get_context (is),
+    exchange_url,
     &kwg->reserve_priv,
     &kwg->balance,
     &wallet_kyc_cb,

src/testing/testing_api_cmd_refresh.c

@@ -783,13 +783,16 @@ refresh_link_run (void *cls,
   const struct TALER_TESTING_Command *reveal_cmd;
   const struct TALER_TESTING_Command *melt_cmd;
   const struct TALER_TESTING_Command *coin_cmd;
-  struct TALER_EXCHANGE_Handle *exchange
+  const char *exchange_url;
-    = TALER_TESTING_get_exchange (is);
 
   rls->cmd = cmd;
-  if (NULL == exchange)
-    return;
   rls->is = is;
+  exchange_url = TALER_TESTING_get_exchange_url (is);
+  if (NULL == exchange_url)
+  {
+    GNUNET_break (0);
+    return;
+  }
   reveal_cmd = TALER_TESTING_interpreter_lookup_command (rls->is,
                                                          rls->reveal_reference);
   if (NULL == reveal_cmd)
@@ -832,7 +835,9 @@ refresh_link_run (void *cls,
   }
 
   /* finally, use private key from withdraw sign command */
-  rls->rlh = TALER_EXCHANGE_link (exchange,
+  rls->rlh = TALER_EXCHANGE_link (
+    TALER_TESTING_interpreter_get_context (is),
+    exchange_url,
     coin_priv,
     rms->refresh_data.melt_age_commitment_proof,
     &link_cb,

src/testing/testing_api_cmd_reserve_attest.c

@@ -152,12 +152,15 @@ attest_run (void *cls,
 {
   struct AttestState *ss = cls;
   const struct TALER_TESTING_Command *create_reserve;
-  struct TALER_EXCHANGE_Handle *exchange
+  const char *exchange_url;
-    = TALER_TESTING_get_exchange (is);
 
-  if (NULL == exchange)
-    return;
   ss->is = is;
+  exchange_url = TALER_TESTING_get_exchange_url (is);
+  if (NULL == exchange_url)
+  {
+    GNUNET_break (0);
+    return;
+  }
   create_reserve
     = TALER_TESTING_interpreter_lookup_command (is,
                                                 ss->reserve_reference);
@@ -179,7 +182,9 @@ attest_run (void *cls,
   }
   GNUNET_CRYPTO_eddsa_key_get_public (&ss->reserve_priv->eddsa_priv,
                                       &ss->reserve_pub.eddsa_pub);
-  ss->rsh = TALER_EXCHANGE_reserves_attest (exchange,
+  ss->rsh = TALER_EXCHANGE_reserves_attest (
+    TALER_TESTING_interpreter_get_context (is),
+    exchange_url,
     ss->reserve_priv,
     ss->attrs_len,
     ss->attrs,