cash2ecash

commit 87b1373d9a793ea45264f7c09a7a6abf0721896d
parent 6c4db15ef9c1592d1785ec8270a138aada9a5429
Author: Tellenbach Reto <tellr1@bfh.ch>
Date:   Fri,  5 Jun 2026 22:00:46 +0200

[wip] UI: function to run qr-show

Diffstat:
M
.gitignore
 | 
2
++
M
src/taler-digitizer.c
 | 
58
+++++++++++++++++++++++++++++++++++++++++++++++++++++++---

2 files changed, 57 insertions(+), 3 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -12,3 +12,5 @@ CMakeFiles/
 # IDE files
 .vscode
 
+# localy built programs
+ext/*
diff --git a/src/taler-digitizer.c b/src/taler-digitizer.c
@@ -23,7 +23,7 @@
  * @author Reto Tellenbach
  */
 
-
+#include <stdio.h>
 #include <gnunet/gnunet_util_lib.h>
 #include "taler_digitizer_util.h"
 #include "taler/taler_digitizer_service.h"
@@ -38,6 +38,9 @@
  */
 #define DIGITIZER_PERSON_WITHDRAWAL_PERIOD_TIME_UNIT  GNUNET_TIME_UNIT_DAYS
 
+#define FRAMEBUFFER_SIZE 256
+#define PATH_QR_SHOW "../ext/QRshow"
+
 /**
  * Global return value
  */
@@ -270,6 +273,33 @@ struct DIGITIZER_DisplayContext *display_ctx;
 
 static void state_controller_task(void *cls);
 
+enum GNUNET_GenericReturnValue
+run_qr_show(int showtime,char *wopid_url)
+{
+    FILE *fp;
+    //char buffer[FRAMEBUFFER_SIZE];
+    char *command;
+    char *url;
+    url = TALER_url_join(wopid_url,
+                  "",
+                  "external-confirmation",
+                  "1");
+    GNUNET_asprintf(&command,
+                    "%s -c ../taler-digitizer.conf -d \"%d s\" %s\n",
+                    PATH_QR_SHOW,
+                    showtime,
+                    url);
+    fp = popen(command, "r");
+    if (fp == NULL) {
+        GNUNET_free(url);
+        TALER_LOG_ERROR("Failed to open framebuffer\n");
+        return GNUNET_SYSERR;
+    }
+
+    GNUNET_free(url);
+    pclose(fp);
+    return GNUNET_OK;
+}
 
 /**
  * Joinn currency and V.F format value string to TALER amount".
@@ -848,7 +878,24 @@ static void Idle_state_task(void *cls)
 }
 
 /**
- * 
+ * Idle state
+ * prepare for new withdrawal process and
+ * check for start signal from UI
+ */
+static void ScanQR_state_task(void *cls)
+{
+  (void)cls;
+  
+  get_accounts_handle = TALER_BANK_get_accounts (curl_ctx,
+                                                cfg_bank_base_url,
+                                                cfg_bank_account_username,
+                                                cfg_bank_authentication,
+                                                &on_get_accounts_done,
+                                                NULL);
+}
+
+/**
+ * Switch between State tasks
  */
 static void state_controller_task(void *cls)
 {
@@ -870,7 +917,12 @@ static void state_controller_task(void *cls)
   {
     GNUNET_SCHEDULER_add_now(TerminalError_state_task,NULL);
     return;
-  } 
+  }
+  case DIGITIZER_STATE_SCAN_QR:
+  {
+    GNUNET_SCHEDULER_add_now(ScanQR_state_task,NULL);
+    return;
+  }
   
   default:
   {