Changeset 6dd929c in mainline

Timestamp:

2011-02-23T18:12:42Z (14 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

dde2c90

Parents:

071b5f8

Message:

Add hack to usbinfo for USB strings

Will refactor and move into libusb later.

File:

• uspace/app/usbinfo/info.c (modified) (1 diff)

uspace/app/usbinfo/info.c

@@ -129 +129 @@
             config_descriptor.total_length);
 
+        /*
+         * Dump STRING languages.
+         */
+        uint8_t *string_descriptor = NULL;
+        size_t string_descriptor_size = 0;
+        rc = usb_request_get_descriptor_alloc(&ctrl_pipe,
+            USB_REQUEST_TYPE_STANDARD, USB_DESCTYPE_STRING, 0, 0,
+            (void **) &string_descriptor, &string_descriptor_size);
+        if (rc != EOK) {
+                fprintf(stderr,
+                    NAME ": failed to fetch language table: %s.\n",
+                    str_error(rc));
+                goto leave;
+        }
+        if ((string_descriptor_size <= 2)
+            || ((string_descriptor_size % 2) != 0)) {
+                fprintf(stderr, NAME ": No supported languages.\n");
+                goto leave;
+        }
+
+        size_t lang_count = (string_descriptor_size - 2) / 2;
+        int *lang_codes = malloc(sizeof(int) * lang_count);
+        size_t i;
+        for (i = 0; i < lang_count; i++) {
+                lang_codes[i] = (string_descriptor[2 + 2 * i + 1] << 8)
+                    + string_descriptor[2 + 2 * i];
+        }
+
+        printf("String languages:");
+        for (i = 0; i < lang_count; i++) {
+                printf(" 0x%04x", lang_codes[i]);
+        }
+        printf(".\n");
+
+        free(string_descriptor);
+        free(lang_codes);
+
+        /*
+         * Dump all strings in English (0x0409).
+         */
+        uint16_t lang = 0x0409;
+        /*
+         * Up to 3 string in device descriptor, 1 for configuration and
+         * one for each interface.
+         */
+        size_t max_idx = 3 + 1 + config_descriptor.interface_count;
+        size_t idx;
+        for (idx = 1; idx <= max_idx; idx++) {
+                uint8_t *string;
+                size_t string_size;
+                rc = usb_request_get_descriptor_alloc(&ctrl_pipe,
+                    USB_REQUEST_TYPE_STANDARD, USB_DESCTYPE_STRING,
+                    idx, uint16_host2usb(lang),
+                    (void **) &string, &string_size);
+                if (rc == EINTR) {
+                        /* Invalid index, skip silently. */
+                        continue;
+                }
+                if (rc != EOK) {
+                        fprintf(stderr,
+                            NAME ": failed to fetch string #%zu " \
+                            "(lang 0x%04x): %s.\n",
+                            idx, (int) lang, str_error(rc));
+                        continue;
+                }
+                /*
+                printf("String #%zu (language 0x%04x):\n", idx, (int) lang);
+                dump_buffer(NULL, 0,
+                    string, string_size);
+                */
+                if (string_size <= 2) {
+                        fprintf(stderr,
+                            NAME ": no string for index #%zu.\n", idx);
+                        free(string);
+                        continue;
+                }
+                string_size -= 2;
+
+                size_t string_char_count = string_size / 2;
+                wchar_t *string_chars = malloc(sizeof(wchar_t) * (string_char_count + 1));
+                assert(string_chars != NULL);
+                for (i = 0; i < string_char_count; i++) {
+                        uint16_t uni_char = (string[2 + 2 * i + 1] << 8)
+                            + string[2 + 2 * i];
+                        string_chars[i] = uni_char;
+                }
+                string_chars[string_char_count] = 0;
+                free(string);
+
+                char *str = wstr_to_astr(string_chars);
+                assert(str != NULL);
+                free(string_chars);
+
+                printf("String #%zu (language 0x%04x): \"%s\"\n",
+                    idx, (int) lang, str);
+                free(str);
+        }
+
         rc = EOK;
+
 leave:
         /* Ignoring errors here. */