1 files changed, 142 insertions, 0 deletions
diff --git a/src/hardware/dmidecode.c b/src/hardware/dmidecode.c
index f29596f..d989a09 100644
--- a/src/hardware/dmidecode.c
+++ b/src/hardware/dmidecode.c
@@ -1859,3 +1859,145 @@ void dmi_free_system_slots(DmiSystemSlot **slots, unsigned *slots_nb)
     *slots_nb = 0;
     *slots = NULL;
 }
+
+
+/******************************************************************************
+ * DmiPointingDevice
+ */
+
+/*
+ * Initialize DmiPointingDevice attributes.
+ * @param dev
+ */
+void init_dmipointingdev_struct(DmiPointingDevice *dev)
+{
+    dev->type = NULL;
+    dev->buttons = 0;
+}
+
+/*
+ * Check attributes of poiting device structure and fill in defaults if needed.
+ * @param dev
+ * @return 0 if success, negative value otherwise
+ */
+short check_dmipointingdev_attributes(DmiPointingDevice *dev)
+{
+    short ret = -1;
+
+    if (!dev->type) {
+        if (!(dev->type = strdup("Unknown"))) {
+            ret = -2;
+            goto done;
+        }
+    }
+
+    ret = 0;
+
+done:
+    if (ret != 0) {
+        warn("Failed to allocate memory.");
+    }
+
+    return ret;
+}
+
+short dmi_get_pointing_devices(DmiPointingDevice **devices, unsigned *devices_nb)
+{
+    short ret = -1;
+    int curr_dev = -1;
+    unsigned i, buffer_size = 0;
+    char **buffer = NULL, *buf;
+
+    *devices_nb = 0;
+
+    /* get dmidecode output */
+    if (run_command("dmidecode -t 21", &buffer, &buffer_size) != 0) {
+        ret = -2;
+        goto done;
+    }
+
+    /* count pointing devices */
+    for (i = 0; i < buffer_size; i++) {
+        if (strncmp(buffer[i], "Handle 0x", 9) == 0) {
+            (*devices_nb)++;
+        }
+    }
+
+    /* if no slot was found */
+    if (*devices_nb < 1) {
+        warn("Dmidecode didn't recognize any pointing device.");
+        ret = -3;
+        goto done;
+    }
+
+    /* allocate memory for pointing devices */
+    *devices = (DmiPointingDevice *)calloc(*devices_nb, sizeof(DmiPointingDevice));
+    if (!(*devices)) {
+        warn("Failed to allocate memory.");
+        ret = -4;
+        goto done;
+    }
+
+    /* parse information about slots */
+    for (i = 0; i < buffer_size; i++) {
+        if (strncmp(buffer[i], "Handle 0x", 9) == 0) {
+            curr_dev++;
+            init_dmipointingdev_struct(&(*devices)[curr_dev]);
+            continue;
+        }
+        /* ignore first useless lines */
+        if (curr_dev < 0) {
+            continue;
+        }
+        /* Type */
+        buf = copy_string_part_after_delim(buffer[i], "Type: ");
+        if (buf) {
+            (*devices)[curr_dev].type = buf;
+            buf = NULL;
+            continue;
+        }
+        /* Buttons */
+        buf = copy_string_part_after_delim(buffer[i], "Buttons: ");
+        if (buf) {
+            sscanf(buf, "%u", &(*devices)[curr_dev].buttons);
+            free(buf);
+            buf = NULL;
+            continue;
+        }
+    }
+
+    /* fill in default attributes if needed */
+    for (i = 0; i < *devices_nb; i++) {
+        if (check_dmipointingdev_attributes(&(*devices)[i]) != 0) {
+            ret = -8;
+            goto done;
+        }
+    }
+
+    ret = 0;
+
+done:
+    free_2d_buffer(&buffer, &buffer_size);
+
+    if (ret != 0) {
+        dmi_free_pointing_devices(devices, devices_nb);
+    }
+
+    return ret;
+}
+
+void dmi_free_pointing_devices(DmiPointingDevice **devices, unsigned *devices_nb)
+{
+    unsigned i;
+
+    if (*devices_nb > 0) {
+        for (i = 0; i < *devices_nb; i++) {
+            free((*devices)[i].type);
+            (*devices)[i].type = NULL;
+        }
+        free(*devices);
+    }
+
+    *devices_nb = 0;
+    *devices = NULL;
+}