From 3d1c65064bdb848ecb40dcf2fa60ecce3a9231a0 Mon Sep 17 00:00:00 2001
From: Axel CHEMIN <axel.chemin@polytech-lille.net>
Date: Thu, 12 Nov 2020 15:19:10 +0100
Subject: [PATCH] Affichage de l'existence des interfaces

---
 src/GetUsbInfos.c | 67 +++++++++++++++++++++++++++++++++++++++++++++----------------------
 1 file changed, 45 insertions(+), 22 deletions(-)

diff --git a/src/GetUsbInfos.c b/src/GetUsbInfos.c
index 2abccc1..43ddb13 100644
--- a/src/GetUsbInfos.c
+++ b/src/GetUsbInfos.c
@@ -46,21 +46,21 @@ int main() {
       exit(-1);
     }
 
-        // Si le méchant noyau est passé avant vous :
-        /*int interface = 0; // TEST : FONCTIONNE MAIS CORRESPOND A QUOI?
-        if (libusb_kernel_driver_active(handle, interface)) {
-          int statusKDriver = libusb_detach_kernel_driver(handle, interface);
-          if (statusKDriver != 0) {
-            perror("libusb_detach_kernel_driver");
-            exit(-1);
-          }
-        }*/
-
-        /*// lectures des configs?
-        int configuration = 0; // valueof("bConfigurationValue");
-        int statusConfig = libusb_set_configuration(handle, configuration);
-        if (statusConfig != 0) {
-          perror("libusb_set_configuration"); /*exit(-1);*/
+    // Si le méchant noyau est passé avant vous :
+    /*int interface = 0; // TEST : FONCTIONNE MAIS CORRESPOND A QUOI?
+    if (libusb_kernel_driver_active(handle, interface)) {
+      int statusKDriver = libusb_detach_kernel_driver(handle, interface);
+      if (statusKDriver != 0) {
+        perror("libusb_detach_kernel_driver");
+        exit(-1);
+      }
+    }*/
+
+    /*// lectures des configs?
+    int configuration = 0; // valueof("bConfigurationValue");
+    int statusConfig = libusb_set_configuration(handle, configuration);
+    if (statusConfig != 0) {
+      perror("libusb_set_configuration"); /*exit(-1);*/
     /*   }
      */
     int MAXLEN_DESCRIPTOR_STRING = 200;
@@ -77,19 +77,42 @@ int main() {
       printf("Descriptor string : %s ; %i\n", data, statusAscii);
     }
 
-
-    //4.2 configuration du périph usb
-    struct libusb_config_descriptor * config;
-    int statusFetchConfig = libusb_get_active_config_descriptor(device, &config);
+    // 4.2 configuration du périph usb
+    struct libusb_config_descriptor *config;
+    int statusFetchConfig =
+        libusb_get_active_config_descriptor(device, &config);
     if (statusFetchConfig != 0) {
       perror("libusb_get_active_config_descriptor");
-      //exit(-1);
+      // exit(-1);
     }
     printf("Config.bConfigurationValue : %d\n", config->bConfigurationValue);
-    printf("Config/ bLength:%d;bDescriptorType:%d;bNumInterfaces:%d\n",
-        config->bLength, config->bDescriptorType, config->bNumInterfaces);
+    printf("Config/ bLength:%d;bDescriptorType:%d;bNumInterfaces:%d",
+           config->bLength, config->bDescriptorType, config->bNumInterfaces);
+
+    // itération de l'interface
+
+    for (int indexInterface = 0; indexInterface < config->bNumInterfaces;
+         indexInterface++) {
+      // struct libusb_interface * interface =
+      // &config->interface[indexInterface];
+      printf("^%d", indexInterface);
+      printf("Alt%d", config->interface[indexInterface].num_altsetting);
+    }
+
+    printf("\n");
+    /*
+            //appropriation de l'interface
+
+            int statusClaimInterface=libusb_claim_interface(handle,interface);
+            if(status!=0){ perror("libusb_claim_interface"); exit(-1); }
+            /* ... some code ... */
+    /*
+
 
 
+            status=libusb_release_interface(handle,interface);
+            if(status!=0){ perror("libusb_release_interface"); exit(-1); }
+    */
 
     /* ... some ... code */
     libusb_close(handle);
--
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