diff options
Diffstat (limited to 'src/wire/plugin_wire_sepa.c')
| -rw-r--r-- | src/wire/plugin_wire_sepa.c | 132 |
1 files changed, 110 insertions, 22 deletions
diff --git a/src/wire/plugin_wire_sepa.c b/src/wire/plugin_wire_sepa.c index 995436725..466e450be 100644 --- a/src/wire/plugin_wire_sepa.c +++ b/src/wire/plugin_wire_sepa.c @@ -352,6 +352,42 @@ validate_iban (const char *iban) /** + * Compute purpose for signing. + * + * @param sepa_name name of the account holder + * @param iban bank account number in IBAN format + * @param bic bank identifier + * @param[out] mp purpose to be signed + */ +static void +compute_purpose (const char *sepa_name, + const char *iban, + const char *bic, + struct TALER_MasterWireDetailsPS *wsd) +{ + struct GNUNET_HashContext *hc; + + wsd->purpose.size = htonl (sizeof (struct TALER_MasterWireDetailsPS)); + wsd->purpose.purpose = htonl (TALER_SIGNATURE_MASTER_SEPA_DETAILS); + hc = GNUNET_CRYPTO_hash_context_start (); + GNUNET_CRYPTO_hash_context_read (hc, + "sepa", + strlen ("sepa") + 1); + GNUNET_CRYPTO_hash_context_read (hc, + sepa_name, + strlen (sepa_name) + 1); + GNUNET_CRYPTO_hash_context_read (hc, + iban, + strlen (iban) + 1); + GNUNET_CRYPTO_hash_context_read (hc, + bic, + strlen (bic) + 1); + GNUNET_CRYPTO_hash_context_finish (hc, + &wsd->h_sepa_details); +} + + +/** * Verify that the signature in the @a json for /wire/sepa is valid. * * @param json json reply with the signature @@ -365,14 +401,13 @@ verify_wire_sepa_signature_ok (const json_t *json, const struct TALER_MasterPublicKeyP *master_pub) { struct TALER_MasterSignatureP exchange_sig; - struct TALER_MasterWireSepaDetailsPS mp; - const char *receiver_name; + struct TALER_MasterWireDetailsPS mp; + const char *name; const char *iban; const char *bic; - struct GNUNET_HashContext *hc; struct GNUNET_JSON_Specification spec[] = { GNUNET_JSON_spec_fixed_auto ("sig", &exchange_sig), - GNUNET_JSON_spec_string ("receiver_name", &receiver_name), + GNUNET_JSON_spec_string ("name", &name), GNUNET_JSON_spec_string ("iban", &iban), GNUNET_JSON_spec_string ("bic", &bic), GNUNET_JSON_spec_end() @@ -391,22 +426,10 @@ verify_wire_sepa_signature_ok (const json_t *json, GNUNET_break_op (0); return GNUNET_SYSERR; } - - mp.purpose.purpose = htonl (TALER_SIGNATURE_MASTER_SEPA_DETAILS); - mp.purpose.size = htonl (sizeof (struct TALER_MasterWireSepaDetailsPS)); - hc = GNUNET_CRYPTO_hash_context_start (); - GNUNET_CRYPTO_hash_context_read (hc, - receiver_name, - strlen (receiver_name) + 1); - GNUNET_CRYPTO_hash_context_read (hc, - iban, - strlen (iban) + 1); - GNUNET_CRYPTO_hash_context_read (hc, - bic, - strlen (bic) + 1); - GNUNET_CRYPTO_hash_context_finish (hc, - &mp.h_sepa_details); - + compute_purpose (name, + iban, + bic, + &mp); if (GNUNET_OK != GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MASTER_SEPA_DETAILS, &mp.purpose, @@ -447,12 +470,12 @@ sepa_wire_validate (void *cls, "{" "s:s," /* type: sepa */ "s:s," /* iban: IBAN */ - "s:s," /* receiver_name: beneficiary name */ + "s:s," /* name: beneficiary name */ "s:s" /* bic: beneficiary bank's BIC */ "}", "type", &type, "iban", &iban, - "receiver_name", &name, + "name", &name, "bic", &bic)) { GNUNET_log (GNUNET_ERROR_TYPE_WARNING, @@ -549,6 +572,70 @@ sepa_get_wire_details (void *cls, /** + * Sign wire transfer details in the plugin-specific format. + * + * @param cls closure + * @param in wire transfer details in JSON format + * @param key private signing key to use + * @param salt salt to add + * @param[out] sig where to write the signature + * @return #GNUNET_OK on success + */ +static int +sepa_sign_wire_details (void *cls, + const json_t *in, + const struct TALER_MasterPrivateKeyP *key, + const struct GNUNET_HashCode *salt, + struct TALER_MasterSignatureP *sig) +{ + struct TALER_MasterWireDetailsPS wsd; + const char *sepa_name; + const char *iban; + const char *bic; + const char *type; + json_error_t err; + + if (0 != + json_unpack_ex ((json_t *) in, + &err, + 0 /* flags */, + "{s:s, s:s, s:s, s:s}", + "type", &type, + "name", &sepa_name, + "iban", &iban, + "bic", &bic)) + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "Failed to unpack JSON: %s (at %u)\n", + err.text, + err.position); + return GNUNET_SYSERR; + } + if (0 != strcmp (type, + "sepa")) + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "`type' must be `sepa' for SEPA wire details\n"); + return GNUNET_SYSERR; + } + if (1 != validate_iban (iban)) + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "IBAN invalid in SEPA wire details\n"); + return GNUNET_SYSERR; + } + compute_purpose (sepa_name, + iban, + bic, + &wsd); + GNUNET_CRYPTO_eddsa_sign (&key->eddsa_priv, + &wsd.purpose, + &sig->eddsa_signature); + return GNUNET_OK; +} + + +/** * Prepare for exeuction of a wire transfer. * * @param cls the @e cls of this struct with the plugin-specific state @@ -662,6 +749,7 @@ libtaler_plugin_wire_sepa_init (void *cls) plugin->cls = sc; plugin->amount_round = &sepa_amount_round; plugin->get_wire_details = &sepa_get_wire_details; + plugin->sign_wire_details = &sepa_sign_wire_details; plugin->wire_validate = &sepa_wire_validate; plugin->prepare_wire_transfer = &sepa_prepare_wire_transfer; plugin->prepare_wire_transfer_cancel = &sepa_prepare_wire_transfer_cancel; |