forked from SerenityOS/serenity
-
Notifications
You must be signed in to change notification settings - Fork 0
/
lsusb.cpp
164 lines (146 loc) · 9.75 KB
/
lsusb.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
/*
* Copyright (c) 2021, Jesse Buhagiar <[email protected]>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/ByteBuffer.h>
#include <AK/FixedArray.h>
#include <AK/JsonArray.h>
#include <AK/JsonObject.h>
#include <AK/LexicalPath.h>
#include <AK/String.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/DirIterator.h>
#include <LibCore/File.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
#include <LibUSBDB/Database.h>
#include <stdio.h>
#include <unistd.h>
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
bool print_verbose = false;
bool flag_show_numerical = false;
Core::ArgsParser args;
args.set_general_help("List USB devices.");
args.add_option(print_verbose, "Print all device descriptors", "verbose", 'v');
args.add_option(flag_show_numerical, "Show numerical IDs", "numerical", 'n');
args.parse(arguments);
if (!flag_show_numerical)
TRY(Core::System::unveil("/res/usb.ids", "r"));
TRY(Core::System::pledge("stdio rpath"));
TRY(Core::System::unveil("/sys/bus/usb", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
Core::DirIterator usb_devices("/sys/bus/usb", Core::DirIterator::SkipDots);
RefPtr<USBDB::Database> usb_db;
if (!flag_show_numerical) {
usb_db = USBDB::Database::open();
if (!usb_db) {
warnln("Failed to open usb.ids");
}
}
while (usb_devices.has_next()) {
auto full_path = LexicalPath(usb_devices.next_full_path());
auto proc_usb_device = Core::File::construct(full_path.string());
if (!proc_usb_device->open(Core::OpenMode::ReadOnly)) {
warnln("Failed to open {}: {}", proc_usb_device->name(), proc_usb_device->error_string());
continue;
}
auto contents = proc_usb_device->read_all();
auto json_or_error = JsonValue::from_string(contents);
if (json_or_error.is_error()) {
warnln("Failed to decode JSON: {}", json_or_error.error());
continue;
}
auto json = json_or_error.release_value();
json.as_array().for_each([usb_db, print_verbose](auto& value) {
auto& device_descriptor = value.as_object();
auto device_address = device_descriptor.get("device_address"sv).to_u32();
auto vendor_id = device_descriptor.get("vendor_id"sv).to_u32();
auto product_id = device_descriptor.get("product_id"sv).to_u32();
if (usb_db) {
StringView vendor_string = usb_db->get_vendor(vendor_id);
StringView device_string = usb_db->get_device(vendor_id, product_id);
if (device_string.is_empty())
device_string = "Unknown Device"sv;
outln("Device {}: ID {:04x}:{:04x} {} {}", device_address, vendor_id, product_id, vendor_string, device_string);
} else {
outln("Device {}: ID {:04x}:{:04x}", device_address, vendor_id, product_id);
}
if (print_verbose) {
outln("Device Descriptor");
outln(" bLength {}", device_descriptor.get("length"sv).to_u32());
outln(" bDescriptorType {}", device_descriptor.get("descriptor_type"sv).to_u32());
outln(" bcdUSB {}", device_descriptor.get("usb_spec_compliance_bcd"sv).to_u32());
outln(" bDeviceClass {}", device_descriptor.get("device_class"sv).to_u32());
outln(" bDeviceSubClass {}", device_descriptor.get("device_sub_class"sv).to_u32());
outln(" bDeviceProtocol {}", device_descriptor.get("device_protocol"sv).to_u32());
outln(" bMaxPacketSize {}", device_descriptor.get("max_packet_size"sv).to_u32());
if (usb_db) {
StringView vendor_string = usb_db->get_vendor(vendor_id);
StringView device_string = usb_db->get_device(vendor_id, product_id);
outln(" idVendor 0x{:04x} {}", device_descriptor.get("vendor_id"sv).to_u32(), vendor_string);
outln(" idProduct 0x{:04x} {}", device_descriptor.get("product_id"sv).to_u32(), device_string);
} else {
outln(" idVendor 0x{:04x}", device_descriptor.get("vendor_id"sv).to_u32());
outln(" idProduct 0x{:04x}", device_descriptor.get("product_id"sv).to_u32());
}
outln(" bcdDevice {}", device_descriptor.get("device_release_bcd"sv).to_u32());
outln(" iManufacturer {}", device_descriptor.get("manufacturer_id_descriptor_index"sv).to_u32());
outln(" iProduct {}", device_descriptor.get("product_string_descriptor_index"sv).to_u32());
outln(" iSerial {}", device_descriptor.get("serial_number_descriptor_index"sv).to_u32());
outln(" bNumConfigurations {}", device_descriptor.get("num_configurations"sv).to_u32());
auto const& configuration_descriptors = value.as_object().get("configurations"sv);
configuration_descriptors.as_array().for_each([&](auto& config_value) {
auto const& configuration_descriptor = config_value.as_object();
outln(" Configuration Descriptor:");
outln(" bLength {}", configuration_descriptor.get("length"sv).as_u32());
outln(" bDescriptorType {}", configuration_descriptor.get("descriptor_type"sv).as_u32());
outln(" wTotalLength {}", configuration_descriptor.get("total_length"sv).as_u32());
outln(" bNumInterfaces {}", configuration_descriptor.get("number_of_interfaces"sv).as_u32());
outln(" bmAttributes 0x{:02x}", configuration_descriptor.get("attributes_bitmap"sv).as_u32());
outln(" MaxPower {}mA", configuration_descriptor.get("max_power"sv).as_u32() * 2u);
auto const& interface_descriptors = config_value.as_object().get("interfaces"sv);
interface_descriptors.as_array().for_each([&](auto& interface_value) {
auto const& interface_descriptor = interface_value.as_object();
auto const interface_class_code = interface_descriptor.get("interface_class_code"sv).to_u32();
auto const interface_subclass_code = interface_descriptor.get("interface_sub_class_code"sv).to_u32();
auto const interface_protocol_code = interface_descriptor.get("interface_protocol"sv).to_u32();
outln(" Interface Descriptor:");
outln(" bLength {}", interface_descriptor.get("length"sv).to_u32());
outln(" bDescriptorType {}", interface_descriptor.get("descriptor_type"sv).to_u32());
outln(" bInterfaceNumber {}", interface_descriptor.get("interface_number"sv).to_u32());
outln(" bAlternateSetting {}", interface_descriptor.get("alternate_setting"sv).to_u32());
outln(" bNumEndpoints {}", interface_descriptor.get("num_endpoints"sv).to_u32());
if (usb_db) {
auto const interface_class = usb_db->get_class(interface_class_code);
auto const interface_subclass = usb_db->get_subclass(interface_class_code, interface_subclass_code);
auto const interface_protocol = usb_db->get_protocol(interface_class_code, interface_subclass_code, interface_protocol_code);
outln(" bInterfaceClass {} {}", interface_class_code, interface_class);
outln(" bInterfaceSubClass {} {}", interface_subclass_code, interface_subclass);
outln(" bInterfaceProtocol {} {}", interface_protocol_code, interface_protocol);
} else {
outln(" bInterfaceClass {}", interface_class_code);
outln(" bInterfaceSubClass {}", interface_subclass_code);
outln(" bInterfaceProtocol {}", interface_protocol_code);
}
outln(" iInterface {}", interface_descriptor.get("interface_string_desc_index"sv).to_u32());
auto const& endpoint_descriptors = interface_value.as_object().get("endpoints"sv);
endpoint_descriptors.as_array().for_each([&](auto& endpoint_value) {
auto const& endpoint_descriptor = endpoint_value.as_object();
auto const endpoint_address = endpoint_descriptor.get("endpoint_address"sv).to_u32();
outln(" Endpoint Descriptor:");
outln(" bLength {}", endpoint_descriptor.get("length"sv).to_u32());
outln(" bDescriptorType {}", endpoint_descriptor.get("descriptor_type"sv).to_u32());
outln(" bEndpointAddress 0x{:02x} EP {} {}", endpoint_address, (endpoint_address & 0xFu), ((endpoint_address & 0x80u) ? "IN" : "OUT"));
outln(" bmAttributes 0x{:02x}", endpoint_descriptor.get("attribute_bitmap"sv).to_u32());
outln(" wMaxPacketSize 0x{:04x}", endpoint_descriptor.get("max_packet_size"sv).to_u32());
outln(" bInterval {}", endpoint_descriptor.get("polling_interval"sv).to_u32());
});
});
});
}
});
}
return 0;
}