Create 16_4_examinepsbt.v

src/16_4_examinepsbt.v

@@ -0,0 +1,62 @@
+#include <stdio.h>
+#include "wally_core.h"
+#include "wally_psbt.h"
+
+int main(int argc, char *argv[]) {
+
+
+  /* 1. Request a PSBT */
+  
+  if (argc != 2) {
+
+    printf("ERROR: Only %i arguments! Correct usage is '%s [psbt]'\n",argc-1,argv[0]);
+    exit(-1);
+    
+  }
+  char *psbt_64 = argv[1];
+
+  /* 2. Convert the PSBT */
+  
+  int lw_response;
+
+  struct wally_psbt *psbt;
+  
+  lw_response = wally_psbt_from_base64(psbt_64,&psbt);
+
+  if (lw_response) {
+
+    printf("Error: Wally_psbt_from_base64 failed: %d\n",lw_response);
+    exit(-1);
+    
+  }
+  
+  /* 3. Read the Inputs */
+
+  int inputs = psbt->num_inputs;
+  printf("TOTAL INPUTS: %i\n",inputs);
+
+  for (int i = 0 ; i < inputs ; i++) {
+    printf("\nINPUT #%i: %i satoshis\n",i, psbt->inputs[i].witness_utxo->satoshi);
+
+    char *script_hex;
+    wally_hex_from_bytes(psbt->inputs[i].witness_utxo->script,psbt->inputs[i].witness_utxo->script_len,&script_hex);
+    printf("scriptPubKey: %s\n",script_hex);
+    wally_free_string(script_hex);
+    
+  }
+  
+  /* 4. Read the Outputs */
+
+  int outputs = psbt->num_outputs;
+  printf("\nTOTAL OUTPUTS: %i\n",outputs);
+  for (int i = 0 ; i < outputs ; i++) {
+
+    char *pubkey_hex;
+    wally_hex_from_bytes(psbt->tx->outputs[i].script,psbt->tx->outputs[i].script_len,&pubkey_hex);
+    printf("\nINPUT #%i\n",i);
+    printf("scriptPubKey: %s\n",pubkey_hex);
+    wally_free_string(pubkey_hex);    
+  }
+
+  wally_cleanup(0);  
+}