[+] Emssion TSD sections extracion

modules/common/dap_chain_datum_token.c

@@ -285,6 +285,23 @@ dap_chain_datum_token_emission_t *dap_chain_datum_emission_add_tsd(dap_chain_dat
     return l_emission;
 }
 
+byte_t *dap_chain_emission_get_tsd(dap_chain_datum_token_emission_t *a_emission, int a_type, size_t *a_size)
+{
+    if (!a_emission || a_emission->hdr.type != DAP_CHAIN_DATUM_TOKEN_EMISSION_TYPE_AUTH ||
+            a_emission->data.type_auth.tsd_total_size == 0)
+        return NULL;
+    dap_tsd_t *l_tsd = (dap_tsd_t *)a_emission->tsd_n_signs;
+    do {
+        if (l_tsd->type == a_type) {
+            if (a_size)
+                *a_size = l_tsd->size;
+            return l_tsd->data;
+        }
+        l_tsd = (dap_tsd_t *)((byte_t *)l_tsd + dap_tsd_size(l_tsd));
+    } while ((byte_t *)l_tsd < a_emission->tsd_n_signs + a_emission->data.type_auth.tsd_total_size);
+    return NULL;
+}
+
 dap_chain_datum_token_emission_t *dap_chain_datum_emission_add_sign(dap_enc_key_t *a_sign_key, dap_chain_datum_token_emission_t *a_emission)
 {
     if (!a_emission || a_emission->hdr.type != DAP_CHAIN_DATUM_TOKEN_EMISSION_TYPE_AUTH)

modules/common/include/dap_chain_datum_token.h

@@ -424,6 +424,7 @@ dap_chain_datum_token_t *dap_chain_datum_token_read(byte_t *a_token_serial, size
 
 dap_chain_datum_token_emission_t *dap_chain_datum_emission_create(uint256_t a_value, const char *a_ticker, dap_chain_addr_t *a_addr);
 dap_chain_datum_token_emission_t *dap_chain_datum_emission_add_tsd(dap_chain_datum_token_emission_t *a_emission, int a_type, size_t a_size, void *a_data);
+byte_t *dap_chain_emission_get_tsd(dap_chain_datum_token_emission_t *a_emission, int a_type, size_t *a_size);
 dap_chain_datum_token_emission_t *dap_chain_datum_emission_read(byte_t *a_emission_serial, size_t *a_emission_size);
 size_t dap_chain_datum_emission_get_size(uint8_t *a_emission_serial);
 dap_chain_datum_token_emission_t *dap_chain_datum_emission_add_sign(dap_enc_key_t *a_sign_key, dap_chain_datum_token_emission_t *a_emission);