Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright (c) 2018 Yubico AB. All rights reserved. |
3 | | * Use of this source code is governed by a BSD-style |
4 | | * license that can be found in the LICENSE file. |
5 | | */ |
6 | | |
7 | | #include "fido.h" |
8 | | |
9 | | static int |
10 | | get_key_len(uint8_t tag, uint8_t *key, size_t *key_len) |
11 | 1.59M | { |
12 | 1.59M | *key = tag & 0xfc; |
13 | 1.59M | if ((*key & 0xf0) == 0xf0) { |
14 | 23.5k | fido_log_debug("%s: *key=0x%02x", __func__, *key); |
15 | 23.5k | return (-1); |
16 | 23.5k | } |
17 | | |
18 | 1.56M | *key_len = tag & 0x3; |
19 | 1.56M | if (*key_len == 3) { |
20 | 95.7k | *key_len = 4; |
21 | 95.7k | } |
22 | | |
23 | 1.56M | return (0); |
24 | 1.56M | } |
25 | | |
26 | | static int |
27 | | get_key_val(const void *body, size_t key_len, uint32_t *val) |
28 | 1.33M | { |
29 | 1.33M | const uint8_t *ptr = body; |
30 | | |
31 | 1.33M | switch (key_len) { |
32 | 1.15M | case 0: |
33 | 1.15M | *val = 0; |
34 | 1.15M | break; |
35 | 52.6k | case 1: |
36 | 52.6k | *val = ptr[0]; |
37 | 52.6k | break; |
38 | 126k | case 2: |
39 | 126k | *val = (uint32_t)((ptr[1] << 8) | ptr[0]); |
40 | 126k | break; |
41 | 9.43k | default: |
42 | 9.43k | fido_log_debug("%s: key_len=%zu", __func__, key_len); |
43 | 9.43k | return (-1); |
44 | 1.32M | } |
45 | | |
46 | 1.32M | return (0); |
47 | 1.32M | } |
48 | | |
49 | | int |
50 | | fido_hid_get_usage(const uint8_t *report_ptr, size_t report_len, |
51 | | uint32_t *usage_page) |
52 | 512k | { |
53 | 512k | const uint8_t *ptr = report_ptr; |
54 | 512k | size_t len = report_len; |
55 | | |
56 | 1.83M | while (len > 0) { |
57 | 1.58M | const uint8_t tag = ptr[0]; |
58 | 1.58M | ptr++; |
59 | 1.58M | len--; |
60 | | |
61 | 1.58M | uint8_t key; |
62 | 1.58M | size_t key_len; |
63 | 1.58M | uint32_t key_val; |
64 | | |
65 | 1.58M | if (get_key_len(tag, &key, &key_len) < 0 || key_len > len || |
66 | 1.58M | get_key_val(ptr, key_len, &key_val) < 0) { |
67 | 263k | return (-1); |
68 | 263k | } |
69 | | |
70 | 1.32M | if (key == 0x4) { |
71 | 96.0k | *usage_page = key_val; |
72 | 96.0k | } |
73 | | |
74 | 1.32M | ptr += key_len; |
75 | 1.32M | len -= key_len; |
76 | 1.32M | } |
77 | | |
78 | 512k | return (0); |
79 | 512k | } |
80 | | |
81 | | int |
82 | | fido_hid_get_report_len(const uint8_t *report_ptr, size_t report_len, |
83 | | size_t *report_in_len, size_t *report_out_len) |
84 | 1.21k | { |
85 | 1.21k | const uint8_t *ptr = report_ptr; |
86 | 1.21k | size_t len = report_len; |
87 | 1.21k | uint32_t report_size = 0; |
88 | | |
89 | 5.12k | while (len > 0) { |
90 | 4.55k | const uint8_t tag = ptr[0]; |
91 | 4.55k | ptr++; |
92 | 4.55k | len--; |
93 | | |
94 | 4.55k | uint8_t key; |
95 | 4.55k | size_t key_len; |
96 | 4.55k | uint32_t key_val; |
97 | | |
98 | 4.55k | if (get_key_len(tag, &key, &key_len) < 0 || key_len > len || |
99 | 4.55k | get_key_val(ptr, key_len, &key_val) < 0) { |
100 | 642 | return (-1); |
101 | 642 | } |
102 | | |
103 | 3.91k | if (key == 0x94) { |
104 | 224 | report_size = key_val; |
105 | 3.68k | } else if (key == 0x80) { |
106 | 2.01k | *report_in_len = (size_t)report_size; |
107 | 2.01k | } else if (key == 0x90) { |
108 | 248 | *report_out_len = (size_t)report_size; |
109 | 248 | } |
110 | | |
111 | 3.91k | ptr += key_len; |
112 | 3.91k | len -= key_len; |
113 | 3.91k | } |
114 | | |
115 | 1.21k | return (0); |
116 | 1.21k | } |
117 | | |
118 | | fido_dev_info_t * |
119 | | fido_dev_info_new(size_t n) |
120 | 2.41k | { |
121 | 2.41k | return (calloc(n, sizeof(fido_dev_info_t))); |
122 | 2.41k | } |
123 | | |
124 | | static void |
125 | | fido_dev_info_reset(fido_dev_info_t *di) |
126 | 43.6k | { |
127 | 43.6k | free(di->path); |
128 | 43.6k | free(di->manufacturer); |
129 | 43.6k | free(di->product); |
130 | 43.6k | memset(di, 0, sizeof(*di)); |
131 | 43.6k | } |
132 | | |
133 | | void |
134 | | fido_dev_info_free(fido_dev_info_t **devlist_p, size_t n) |
135 | 2.42k | { |
136 | 2.42k | fido_dev_info_t *devlist; |
137 | | |
138 | 2.42k | if (devlist_p == NULL || (devlist = *devlist_p) == NULL) |
139 | 2.42k | return; |
140 | | |
141 | 44.8k | for (size_t i = 0; i < n; i++) |
142 | 42.4k | fido_dev_info_reset(&devlist[i]); |
143 | | |
144 | 2.41k | free(devlist); |
145 | | |
146 | 2.41k | *devlist_p = NULL; |
147 | 2.41k | } |
148 | | |
149 | | const fido_dev_info_t * |
150 | | fido_dev_info_ptr(const fido_dev_info_t *devlist, size_t i) |
151 | 1.26k | { |
152 | 1.26k | return (&devlist[i]); |
153 | 1.26k | } |
154 | | |
155 | | int |
156 | | fido_dev_info_set(fido_dev_info_t *devlist, size_t i, |
157 | | const char *path, const char *manufacturer, const char *product, |
158 | | const fido_dev_io_t *io, const fido_dev_transport_t *transport) |
159 | 1.26k | { |
160 | 1.26k | char *path_copy = NULL, *manu_copy = NULL, *prod_copy = NULL; |
161 | 1.26k | int r; |
162 | | |
163 | 1.26k | if (path == NULL || manufacturer == NULL || product == NULL || |
164 | 1.26k | io == NULL) { |
165 | 0 | r = FIDO_ERR_INVALID_ARGUMENT; |
166 | 0 | goto out; |
167 | 0 | } |
168 | | |
169 | 1.26k | if ((path_copy = strdup(path)) == NULL || |
170 | 1.26k | (manu_copy = strdup(manufacturer)) == NULL || |
171 | 1.26k | (prod_copy = strdup(product)) == NULL) { |
172 | 44 | r = FIDO_ERR_INTERNAL; |
173 | 44 | goto out; |
174 | 44 | } |
175 | | |
176 | 1.21k | fido_dev_info_reset(&devlist[i]); |
177 | 1.21k | devlist[i].path = path_copy; |
178 | 1.21k | devlist[i].manufacturer = manu_copy; |
179 | 1.21k | devlist[i].product = prod_copy; |
180 | 1.21k | devlist[i].io = *io; |
181 | 1.21k | if (transport) |
182 | 1.21k | devlist[i].transport = *transport; |
183 | 1.21k | r = FIDO_OK; |
184 | 1.26k | out: |
185 | 1.26k | if (r != FIDO_OK) { |
186 | 44 | free(prod_copy); |
187 | 44 | free(manu_copy); |
188 | 44 | free(path_copy); |
189 | 44 | } |
190 | 1.26k | return (r); |
191 | 1.21k | } |
192 | | |
193 | | const char * |
194 | | fido_dev_info_path(const fido_dev_info_t *di) |
195 | 2.52k | { |
196 | 2.52k | return (di->path); |
197 | 2.52k | } |
198 | | |
199 | | int16_t |
200 | | fido_dev_info_vendor(const fido_dev_info_t *di) |
201 | 1.26k | { |
202 | 1.26k | return (di->vendor_id); |
203 | 1.26k | } |
204 | | |
205 | | int16_t |
206 | | fido_dev_info_product(const fido_dev_info_t *di) |
207 | 1.26k | { |
208 | 1.26k | return (di->product_id); |
209 | 1.26k | } |
210 | | |
211 | | const char * |
212 | | fido_dev_info_manufacturer_string(const fido_dev_info_t *di) |
213 | 2.52k | { |
214 | 2.52k | return (di->manufacturer); |
215 | 2.52k | } |
216 | | |
217 | | const char * |
218 | | fido_dev_info_product_string(const fido_dev_info_t *di) |
219 | 2.52k | { |
220 | 2.52k | return (di->product); |
221 | 2.52k | } |