diff options
Diffstat (limited to 'src/lib/exchange_api_common.c')
| -rw-r--r-- | src/lib/exchange_api_common.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/src/lib/exchange_api_common.c b/src/lib/exchange_api_common.c index b895bf9a8..588b12834 100644 --- a/src/lib/exchange_api_common.c +++ b/src/lib/exchange_api_common.c @@ -2194,4 +2194,196 @@ TALER_EXCHANGE_verify_deposit_signature_ ( } +/** + * Parse account restriction in @a jrest into @a rest. + * + * @param jresta array of account restrictions in JSON + * @param[out] resta_len set to length of @a resta + * @param[out] resta account restriction array to set + * @return #GNUNET_OK on success + */ +static enum GNUNET_GenericReturnValue +parse_restrictions (const json_t *jresta, + unsigned int *resta_len, + struct TALER_EXCHANGE_AccountRestriction **resta) +{ + if (! json_is_array (jresta)) + { + GNUNET_break_op (0); + return GNUNET_SYSERR; + } + *resta_len = json_array_size (jresta); + if (0 == *resta_len) + { + /* no restrictions, perfectly OK */ + *resta = NULL; + return GNUNET_OK; + } + *resta = GNUNET_new_array (*resta_len, + struct TALER_EXCHANGE_AccountRestriction); + for (unsigned int i = 0; i<*resta_len; i++) + { + const json_t *jr = json_array_get (jresta, + i); + struct TALER_EXCHANGE_AccountRestriction *ar = &(*resta)[i]; + const char *type = json_string_value (json_object_get (jr, + "type")); + + if (NULL == type) + { + GNUNET_break (0); + goto fail; + } + if (0 == strcmp (type, + "deny")) + { + ar->type = TALER_EXCHANGE_AR_DENY; + continue; + } + if (0 == strcmp (type, + "regex")) + { + struct GNUNET_JSON_Specification spec[] = { + GNUNET_JSON_spec_string ( + "payto_regex", + &ar->details.regex.posix_egrep), + GNUNET_JSON_spec_string ( + "human_hint", + &ar->details.regex.human_hint), + GNUNET_JSON_spec_mark_optional ( + GNUNET_JSON_spec_object_const ( + "human_hint_i18n", + &ar->details.regex.human_hint_i18n), + NULL), + GNUNET_JSON_spec_end () + }; + + if (GNUNET_OK != + GNUNET_JSON_parse (jr, + spec, + NULL, NULL)) + { + /* bogus reply */ + GNUNET_break_op (0); + goto fail; + } + ar->type = TALER_EXCHANGE_AR_REGEX; + continue; + } + /* unsupported type */ + GNUNET_break (0); + return GNUNET_SYSERR; + } + return GNUNET_OK; +fail: + GNUNET_free (*resta); + *resta_len = 0; + return GNUNET_SYSERR; +} + + +enum GNUNET_GenericReturnValue +TALER_EXCHANGE_parse_accounts (const struct TALER_MasterPublicKeyP *master_pub, + const json_t *accounts, + struct TALER_EXCHANGE_WireAccount was[], + unsigned int was_length) +{ + memset (was, + 0, + sizeof (struct TALER_EXCHANGE_WireAccount) * was_length); + GNUNET_assert (was_length == + json_array_size (accounts)); + for (unsigned int i = 0; + i<was_length; + i++) + { + struct TALER_EXCHANGE_WireAccount *wa = &was[i]; + json_t *credit_restrictions; + json_t *debit_restrictions; + struct GNUNET_JSON_Specification spec_account[] = { + GNUNET_JSON_spec_string ("payto_uri", + &wa->payto_uri), + GNUNET_JSON_spec_mark_optional ( + GNUNET_JSON_spec_string ("conversion_url", + &wa->conversion_url), + NULL), + GNUNET_JSON_spec_json ("credit_restrictions", + &credit_restrictions), + GNUNET_JSON_spec_json ("debit_restrictions", + &debit_restrictions), + GNUNET_JSON_spec_fixed_auto ("master_sig", + &wa->master_sig), + GNUNET_JSON_spec_end () + }; + json_t *account; + + account = json_array_get (accounts, + i); + if (GNUNET_OK != + GNUNET_JSON_parse (account, + spec_account, + NULL, NULL)) + { + /* bogus reply */ + GNUNET_break_op (0); + return GNUNET_SYSERR; + } + { + char *err; + + err = TALER_payto_validate (wa->payto_uri); + if (NULL != err) + { + GNUNET_break_op (0); + GNUNET_free (err); + return GNUNET_SYSERR; + } + } + + if ( (NULL != master_pub) && + (GNUNET_OK != + TALER_exchange_wire_signature_check (wa->payto_uri, + wa->conversion_url, + debit_restrictions, + credit_restrictions, + master_pub, + &wa->master_sig)) ) + { + /* bogus reply */ + GNUNET_break_op (0); + return GNUNET_SYSERR; + } + if ( (GNUNET_OK != + parse_restrictions (credit_restrictions, + &wa->credit_restrictions_length, + &wa->credit_restrictions)) || + (GNUNET_OK != + parse_restrictions (debit_restrictions, + &wa->debit_restrictions_length, + &wa->debit_restrictions)) ) + { + /* bogus reply */ + GNUNET_break_op (0); + return GNUNET_SYSERR; + } + GNUNET_JSON_parse_free (spec_account); + } /* end 'for all accounts */ + return GNUNET_OK; +} + + +void +TALER_EXCHANGE_free_accounts (struct TALER_EXCHANGE_WireAccount *was, + unsigned int was_len) +{ + for (unsigned int i = 0; i<was_len; i++) + { + struct TALER_EXCHANGE_WireAccount *wa = &was[i]; + + GNUNET_free (wa->credit_restrictions); + GNUNET_free (wa->debit_restrictions); + } +} + + /* end of exchange_api_common.c */ |