usb_vendors.c revision 7953b89e8d68565d15791618146a712231683d09 
1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "usb_vendors.h"
18
19#include <stdio.h>
20
21#ifdef _WIN32
22#  define WIN32_LEAN_AND_MEAN
23#  include "windows.h"
24#  include "shlobj.h"
25#else
26#  include <unistd.h>
27#  include <sys/stat.h>
28#endif
29
30#include "sysdeps.h"
31#include "adb.h"
32
33#define ANDROID_PATH            ".android"
34#define ANDROID_ADB_INI         "adb_usb.ini"
35
36#define TRACE_TAG               TRACE_USB
37
38// Google's USB Vendor ID
39#define VENDOR_ID_GOOGLE        0x18d1
40// HTC's USB Vendor ID
41#define VENDOR_ID_HTC           0x0bb4
42// Samsung's USB Vendor ID
43#define VENDOR_ID_SAMSUNG       0x04e8
44// Motorola's USB Vendor ID
45#define VENDOR_ID_MOTOROLA      0x22b8
46// LG's USB Vendor ID
47#define VENDOR_ID_LGE           0x1004
48// Huawei's USB Vendor ID
49#define VENDOR_ID_HUAWEI        0x12D1
50// Acer's USB Vendor ID
51#define VENDOR_ID_ACER          0x0502
52
53/** built-in vendor list */
54int builtInVendorIds[] = {
55    VENDOR_ID_GOOGLE,
56    VENDOR_ID_HTC,
57    VENDOR_ID_SAMSUNG,
58    VENDOR_ID_MOTOROLA,
59    VENDOR_ID_LGE,
60    VENDOR_ID_HUAWEI,
61    VENDOR_ID_ACER,
62};
63
64#define BUILT_IN_VENDOR_COUNT    (sizeof(builtInVendorIds)/sizeof(builtInVendorIds[0]))
65
66/* max number of supported vendor ids (built-in + 3rd party). increase as needed */
67#define VENDOR_COUNT_MAX         128
68
69int vendorIds[VENDOR_COUNT_MAX];
70unsigned vendorIdCount = 0;
71
72int get_adb_usb_ini(char* buff, size_t len);
73
74void usb_vendors_init(void)
75{
76    if (VENDOR_COUNT_MAX < BUILT_IN_VENDOR_COUNT) {
77        fprintf(stderr, "VENDOR_COUNT_MAX not big enough for built-in vendor list.\n");
78        exit(2);
79    }
80
81    /* add the built-in vendors at the beginning of the array */
82    memcpy(vendorIds, builtInVendorIds, sizeof(builtInVendorIds));
83
84    /* default array size is the number of built-in vendors */
85    vendorIdCount = BUILT_IN_VENDOR_COUNT;
86
87    if (VENDOR_COUNT_MAX == BUILT_IN_VENDOR_COUNT)
88        return;
89
90    char temp[PATH_MAX];
91    if (get_adb_usb_ini(temp, sizeof(temp)) == 0) {
92        FILE * f = fopen(temp, "rt");
93
94        if (f != NULL) {
95            /* The vendor id file is pretty basic. 1 vendor id per line.
96               Lines starting with # are comments */
97            while (fgets(temp, sizeof(temp), f) != NULL) {
98                if (temp[0] == '#')
99                    continue;
100
101                long value = strtol(temp, NULL, 0);
102                if (errno == EINVAL || errno == ERANGE || value > INT_MAX || value < 0) {
103                    fprintf(stderr, "Invalid content in %s. Quitting.\n", ANDROID_ADB_INI);
104                    exit(2);
105                }
106
107                vendorIds[vendorIdCount++] = (int)value;
108
109                /* make sure we don't go beyond the array */
110                if (vendorIdCount == VENDOR_COUNT_MAX) {
111                    break;
112                }
113            }
114        }
115    }
116}
117
118/* Utils methods */
119
120/* builds the path to the adb vendor id file. returns 0 if success */
121int build_path(char* buff, size_t len, const char* format, const char* home)
122{
123    if (snprintf(buff, len, format, home, ANDROID_PATH, ANDROID_ADB_INI) >= len) {
124        return 1;
125    }
126
127    return 0;
128}
129
130/* fills buff with the path to the adb vendor id file. returns 0 if success */
131int get_adb_usb_ini(char* buff, size_t len)
132{
133#ifdef _WIN32
134    const char* home = getenv("ANDROID_SDK_HOME");
135    if (home != NULL) {
136        return build_path(buff, len, "%s\\%s\\%s", home);
137    } else {
138        char path[MAX_PATH];
139        SHGetFolderPath( NULL, CSIDL_PROFILE, NULL, 0, path);
140        return build_path(buff, len, "%s\\%s\\%s", path);
141    }
142#else
143    const char* home = getenv("HOME");
144    if (home == NULL)
145        home = "/tmp";
146
147    return build_path(buff, len, "%s/%s/%s", home);
148#endif
149}
150