diff options
author | Christian Grothoff <grothoff@gnunet.org> | 2022-02-05 17:06:42 +0100 |
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committer | Christian Grothoff <grothoff@gnunet.org> | 2022-02-05 17:06:42 +0100 |
commit | 41d132757b8b7d8b4fea7e636af603ebe9b422a4 (patch) | |
tree | 5139aecb15c348566396d28786e1cca33baff2c9 /src/lib | |
parent | 63da97630dc18ced2f68cad2d9d98e7210dc9c01 (diff) | |
download | exchange-41d132757b8b7d8b4fea7e636af603ebe9b422a4.tar.xz |
-implement new client-side csr logic
Diffstat (limited to 'src/lib')
-rw-r--r-- | src/lib/exchange_api_csr.c | 195 |
1 files changed, 115 insertions, 80 deletions
diff --git a/src/lib/exchange_api_csr.c b/src/lib/exchange_api_csr.c index d99b08caf..bc58c040e 100644 --- a/src/lib/exchange_api_csr.c +++ b/src/lib/exchange_api_csr.c @@ -54,11 +54,6 @@ struct TALER_EXCHANGE_CsRHandle void *cb_cls; /** - * Denomination key we are withdrawing. - */ - struct TALER_EXCHANGE_DenomPublicKey pk; - - /** * The url for this request. */ char *url; @@ -85,34 +80,51 @@ struct TALER_EXCHANGE_CsRHandle * If everything checks out, we return the unblinded signature * to the application via the callback. * - * @param wh operation handle - * @param json reply from the exchange + * @param csrh operation handle + * @param arr reply from the exchange + * @param hr http response details * @return #GNUNET_OK on success, #GNUNET_SYSERR on errors */ static enum GNUNET_GenericReturnValue -csr_ok (const json_t *json, - struct TALER_EXCHANGE_CsRResponse *csrr) +csr_ok (struct TALER_EXCHANGE_CsRHandle *csrh, + json_t *arr, + struct TALER_EXCHANGE_HttpResponse *hr) { - struct GNUNET_JSON_Specification spec[] = { - GNUNET_JSON_spec_fixed ("r_pub_0", - &csrr->details.success.r_pubs.r_pub[0], - sizeof (struct GNUNET_CRYPTO_CsRPublic)), - GNUNET_JSON_spec_fixed ("r_pub_1", - &csrr->details.success.r_pubs.r_pub[1], - sizeof (struct GNUNET_CRYPTO_CsRPublic)), - GNUNET_JSON_spec_end () + unsigned int alen = json_array_size (arr); + struct TALER_ExchangeWithdrawValues alg_values[GNUNET_NZL (alen)]; + struct TALER_EXCHANGE_CsRResponse csrr = { + .hr = hr, + .details.success.alg_values_len = alen, + .details.success.alg_values = alg_values }; - if (GNUNET_OK != - GNUNET_JSON_parse (json, - spec, - NULL, NULL)) + for (unsigned int i = 0; i<alen; i++) { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } + json_t *av = json_array_get (arr, + i); + struct GNUNET_JSON_Specification spec[] = { + GNUNET_JSON_spec_fixed ( + "r_pub_0", + &alg_values[i].r_pub.r_pub[0], + sizeof (struct GNUNET_CRYPTO_CsRPublic)), + GNUNET_JSON_spec_fixed ( + "r_pub_1", + &alg_values[i].r_pub.r_pub[1], + sizeof (struct GNUNET_CRYPTO_CsRPublic)), + GNUNET_JSON_spec_end () + }; - GNUNET_JSON_parse_free (spec); + if (GNUNET_OK != + GNUNET_JSON_parse (av, + spec, + NULL, NULL)) + { + GNUNET_break_op (0); + return GNUNET_SYSERR; + } + } + csrh->cb (csrh->cb_cls, + &csrr); return GNUNET_OK; } @@ -146,16 +158,26 @@ handle_csr_finished (void *cls, csrr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; break; case MHD_HTTP_OK: - if (GNUNET_OK != - csr_ok (j, - &csrr)) { - GNUNET_break_op (0); - csrr.hr.http_status = 0; - csrr.hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED; - break; + json_t *arr; + + arr = json_object_get (j, + "ewvs"); + if ( (NULL == arr) || + (0 == json_array_size (arr)) || + (GNUNET_OK != + csr_ok (csrh, + arr, + &hr)) ) + { + GNUNET_break_op (0); + csrr.hr.http_status = 0; + csrr.hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED; + break; + } } - break; + TALER_EXCHANGE_csr_cancel (csrh); + return; 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 */ @@ -204,76 +226,89 @@ handle_csr_finished (void *cls, struct TALER_EXCHANGE_CsRHandle * TALER_EXCHANGE_csr (struct TALER_EXCHANGE_Handle *exchange, - const struct TALER_EXCHANGE_DenomPublicKey *pk, - const struct TALER_CsNonce *nonce, + unsigned int nks_len, + struct TALER_EXCHANGE_NonceKey *nks, TALER_EXCHANGE_CsRCallback res_cb, void *res_cb_cls) { struct TALER_EXCHANGE_CsRHandle *csrh; + json_t *csr_arr; - if (TALER_DENOMINATION_CS != pk->key.cipher) + if (0 == nks_len) { GNUNET_break (0); return NULL; } + for (unsigned int i = 0; i<nks_len; i++) + if (TALER_DENOMINATION_CS != nks[i].pk->key.cipher) + { + GNUNET_break (0); + return NULL; + } csrh = GNUNET_new (struct TALER_EXCHANGE_CsRHandle); csrh->exchange = exchange; csrh->cb = res_cb; csrh->cb_cls = res_cb_cls; - csrh->pk = *pk; + csr_arr = json_array (); + GNUNET_assert (NULL != csr_arr); + for (unsigned int i = 0; i<nks_len; i++) { + const struct TALER_EXCHANGE_NonceKey *nk = &nks[i]; json_t *csr_obj; - csr_obj = GNUNET_JSON_PACK (GNUNET_JSON_pack_data_varsize ("nonce", - nonce, - sizeof(struct - TALER_CsNonce)), - GNUNET_JSON_pack_data_varsize ("denom_pub_hash", - &pk->h_key, - sizeof(struct - TALER_DenominationHash))); - GNUNET_log (GNUNET_ERROR_TYPE_INFO, - "Attempting to request R with denomination public key %s\n", - TALER_B2S (&pk->key.details.cs_public_key)); - csrh->url = TEAH_path_to_url (exchange, - "/csr"); - if (NULL == csrh->url) + csr_obj = GNUNET_JSON_PACK ( + GNUNET_JSON_pack_data_varsize ("nonce", + nk->nonce, + sizeof(struct TALER_CsNonce)), + GNUNET_JSON_pack_data_varsize ("denom_pub_hash", + &nk->pk->h_key, + sizeof(struct TALER_DenominationHash))); + GNUNET_assert (NULL != csr_obj); + GNUNET_assert (0 == + json_array_append_new (csr_arr, + csr_obj)); + } + csrh->url = TEAH_path_to_url (exchange, + "/csr"); + if (NULL == csrh->url) + { + json_decref (csr_arr); + GNUNET_free (csrh); + return NULL; + } + { + CURL *eh; + struct GNUNET_CURL_Context *ctx; + json_t *req; + + req = GNUNET_JSON_PACK ( + GNUNET_JSON_pack_data_json ("nks", + csr_arr)); + ctx = TEAH_handle_to_context (exchange); + eh = TALER_EXCHANGE_curl_easy_get_ (csrh->url); + if ( (NULL == eh) || + (GNUNET_OK != + TALER_curl_easy_post (&csrh->post_ctx, + eh, + req)) ) { - json_decref (csr_obj); + GNUNET_break (0); + if (NULL != eh) + curl_easy_cleanup (eh); + json_decref (req); + GNUNET_free (csrh->url); GNUNET_free (csrh); return NULL; } - { - CURL *eh; - struct GNUNET_CURL_Context *ctx; - - ctx = TEAH_handle_to_context (exchange); - eh = TALER_EXCHANGE_curl_easy_get_ (csrh->url); - if ( (NULL == eh) || - (GNUNET_OK != - TALER_curl_easy_post (&csrh->post_ctx, - eh, - csr_obj)) ) - { - GNUNET_break (0); - if (NULL != eh) - curl_easy_cleanup (eh); - json_decref (csr_obj); - GNUNET_free (csrh->url); - GNUNET_free (csrh); - return NULL; - } - json_decref (csr_obj); - csrh->job = GNUNET_CURL_job_add2 (ctx, - eh, - csrh->post_ctx.headers, - &handle_csr_finished, - csrh); - } + json_decref (req); + csrh->job = GNUNET_CURL_job_add2 (ctx, + eh, + csrh->post_ctx.headers, + &handle_csr_finished, + csrh); } - return csrh; } |