Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 | |
Yabin Cui | aed3c61 | 2015-09-22 15:52:57 -0700 | [diff] [blame] | 17 | #define TRACE_TAG AUTH |
Dan Albert | 3313426 | 2015-03-19 15:21:08 -0700 | [diff] [blame] | 18 | |
| 19 | #include "sysdeps.h" |
| 20 | #include "adb_auth.h" |
| 21 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 22 | #include <stdio.h> |
Christopher Ferris | 67a7a4a | 2014-11-06 14:34:24 -0800 | [diff] [blame] | 23 | #include <stdlib.h> |
Dan Albert | 3313426 | 2015-03-19 15:21:08 -0700 | [diff] [blame] | 24 | #include <string.h> |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 25 | |
| 26 | #ifdef _WIN32 |
Christopher Ferris | 67a7a4a | 2014-11-06 14:34:24 -0800 | [diff] [blame] | 27 | # ifndef WIN32_LEAN_AND_MEAN |
| 28 | # define WIN32_LEAN_AND_MEAN |
| 29 | # endif |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 30 | # include "windows.h" |
| 31 | # include "shlobj.h" |
| 32 | #else |
| 33 | # include <sys/types.h> |
| 34 | # include <sys/stat.h> |
| 35 | # include <unistd.h> |
| 36 | #endif |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 37 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 38 | #include "adb.h" |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 39 | |
David Pursell | 5f787ed | 2016-01-27 08:52:53 -0800 | [diff] [blame] | 40 | #include <android-base/errors.h> |
Elliott Hughes | 4f71319 | 2015-12-04 22:00:26 -0800 | [diff] [blame] | 41 | #include <android-base/strings.h> |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 42 | #include <crypto_utils/android_pubkey.h> |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 43 | #include <cutils/list.h> |
| 44 | |
| 45 | #include <openssl/evp.h> |
| 46 | #include <openssl/objects.h> |
| 47 | #include <openssl/pem.h> |
| 48 | #include <openssl/rsa.h> |
| 49 | #include <openssl/sha.h> |
| 50 | |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 51 | #if defined(OPENSSL_IS_BORINGSSL) |
| 52 | #include <openssl/base64.h> |
| 53 | #endif |
| 54 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 55 | #define ANDROID_PATH ".android" |
| 56 | #define ADB_KEY_FILE "adbkey" |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 57 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 58 | struct adb_private_key { |
| 59 | struct listnode node; |
| 60 | RSA *rsa; |
| 61 | }; |
| 62 | |
| 63 | static struct listnode key_list; |
| 64 | |
| 65 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 66 | static void get_user_info(char *buf, size_t len) |
| 67 | { |
| 68 | char hostname[1024], username[1024]; |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 69 | int ret = -1; |
| 70 | |
| 71 | if (getenv("HOSTNAME") != NULL) { |
| 72 | strncpy(hostname, getenv("HOSTNAME"), sizeof(hostname)); |
| 73 | hostname[sizeof(hostname)-1] = '\0'; |
| 74 | ret = 0; |
| 75 | } |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 76 | |
| 77 | #ifndef _WIN32 |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 78 | if (ret < 0) |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 79 | ret = gethostname(hostname, sizeof(hostname)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 80 | #endif |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 81 | if (ret < 0) |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 82 | strcpy(hostname, "unknown"); |
| 83 | |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 84 | ret = -1; |
| 85 | |
| 86 | if (getenv("LOGNAME") != NULL) { |
| 87 | strncpy(username, getenv("LOGNAME"), sizeof(username)); |
| 88 | username[sizeof(username)-1] = '\0'; |
| 89 | ret = 0; |
| 90 | } |
| 91 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 92 | #if !defined _WIN32 && !defined ADB_HOST_ON_TARGET |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 93 | if (ret < 0) |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 94 | ret = getlogin_r(username, sizeof(username)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 95 | #endif |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 96 | if (ret < 0) |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 97 | strcpy(username, "unknown"); |
| 98 | |
| 99 | ret = snprintf(buf, len, " %s@%s", username, hostname); |
| 100 | if (ret >= (signed)len) |
| 101 | buf[len - 1] = '\0'; |
| 102 | } |
| 103 | |
| 104 | static int write_public_keyfile(RSA *private_key, const char *private_key_path) |
| 105 | { |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 106 | uint8_t binary_key_data[ANDROID_PUBKEY_ENCODED_SIZE]; |
| 107 | uint8_t* base64_key_data = nullptr; |
| 108 | size_t base64_key_length = 0; |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 109 | FILE *outfile = NULL; |
Tamas Berghammer | 3d2904c | 2015-07-13 19:12:28 +0100 | [diff] [blame] | 110 | char path[PATH_MAX], info[MAX_PAYLOAD_V1]; |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 111 | int ret = 0; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 112 | |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 113 | if (!android_pubkey_encode(private_key, binary_key_data, |
| 114 | sizeof(binary_key_data))) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 115 | D("Failed to convert to publickey"); |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 116 | goto out; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 117 | } |
| 118 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 119 | D("Writing public key to '%s'", path); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 120 | |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 121 | #if defined(OPENSSL_IS_BORINGSSL) |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 122 | if (!EVP_EncodedLength(&base64_key_length, sizeof(binary_key_data))) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 123 | D("Public key too large to base64 encode"); |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 124 | goto out; |
| 125 | } |
| 126 | #else |
| 127 | /* While we switch from OpenSSL to BoringSSL we have to implement |
| 128 | * |EVP_EncodedLength| here. */ |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 129 | base64_key_length = 1 + ((sizeof(binary_key_data) + 2) / 3 * 4); |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 130 | #endif |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 131 | |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 132 | base64_key_data = new uint8_t[base64_key_length]; |
| 133 | if (base64_key_data == nullptr) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 134 | D("Allocation failure"); |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 135 | goto out; |
| 136 | } |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 137 | |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 138 | base64_key_length = EVP_EncodeBlock(base64_key_data, binary_key_data, |
| 139 | sizeof(binary_key_data)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 140 | get_user_info(info, sizeof(info)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 141 | |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 142 | if (snprintf(path, sizeof(path), "%s.pub", private_key_path) >= |
| 143 | (int)sizeof(path)) { |
| 144 | D("Path too long while writing public key"); |
| 145 | goto out; |
| 146 | } |
| 147 | |
| 148 | outfile = fopen(path, "w"); |
| 149 | if (!outfile) { |
| 150 | D("Failed to open '%s'", path); |
| 151 | goto out; |
| 152 | } |
| 153 | |
| 154 | if (fwrite(base64_key_data, base64_key_length, 1, outfile) != 1 || |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 155 | fwrite(info, strlen(info), 1, outfile) != 1) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 156 | D("Write error while writing public key"); |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 157 | goto out; |
| 158 | } |
| 159 | |
| 160 | ret = 1; |
| 161 | |
| 162 | out: |
| 163 | if (outfile != NULL) { |
| 164 | fclose(outfile); |
| 165 | } |
Mattias Nissler | 097b6bb | 2016-03-31 16:32:09 +0200 | [diff] [blame] | 166 | delete[] base64_key_data; |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 167 | return ret; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | static int generate_key(const char *file) |
| 171 | { |
| 172 | EVP_PKEY* pkey = EVP_PKEY_new(); |
| 173 | BIGNUM* exponent = BN_new(); |
| 174 | RSA* rsa = RSA_new(); |
Benoit Goby | 64b3103 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 175 | mode_t old_mask; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 176 | FILE *f = NULL; |
| 177 | int ret = 0; |
| 178 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 179 | D("generate_key '%s'", file); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 180 | |
| 181 | if (!pkey || !exponent || !rsa) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 182 | D("Failed to allocate key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 183 | goto out; |
| 184 | } |
| 185 | |
| 186 | BN_set_word(exponent, RSA_F4); |
| 187 | RSA_generate_key_ex(rsa, 2048, exponent, NULL); |
| 188 | EVP_PKEY_set1_RSA(pkey, rsa); |
| 189 | |
Benoit Goby | 64b3103 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 190 | old_mask = umask(077); |
| 191 | |
Spencer Low | 9b96031 | 2015-05-07 19:08:29 -0700 | [diff] [blame] | 192 | f = fopen(file, "w"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 193 | if (!f) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 194 | D("Failed to open '%s'", file); |
Benoit Goby | 64b3103 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 195 | umask(old_mask); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 196 | goto out; |
| 197 | } |
| 198 | |
Benoit Goby | 64b3103 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 199 | umask(old_mask); |
| 200 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 201 | if (!PEM_write_PrivateKey(f, pkey, NULL, NULL, 0, NULL, NULL)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 202 | D("Failed to write key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 203 | goto out; |
| 204 | } |
| 205 | |
| 206 | if (!write_public_keyfile(rsa, file)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 207 | D("Failed to write public key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 208 | goto out; |
| 209 | } |
| 210 | |
| 211 | ret = 1; |
| 212 | |
| 213 | out: |
| 214 | if (f) |
| 215 | fclose(f); |
| 216 | EVP_PKEY_free(pkey); |
| 217 | RSA_free(rsa); |
| 218 | BN_free(exponent); |
| 219 | return ret; |
| 220 | } |
| 221 | |
| 222 | static int read_key(const char *file, struct listnode *list) |
| 223 | { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 224 | D("read_key '%s'", file); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 225 | |
Spencer Low | 9b96031 | 2015-05-07 19:08:29 -0700 | [diff] [blame] | 226 | FILE* fp = fopen(file, "r"); |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 227 | if (!fp) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 228 | D("Failed to open '%s': %s", file, strerror(errno)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 229 | return 0; |
| 230 | } |
| 231 | |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 232 | adb_private_key* key = new adb_private_key; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 233 | key->rsa = RSA_new(); |
| 234 | |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 235 | if (!PEM_read_RSAPrivateKey(fp, &key->rsa, NULL, NULL)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 236 | D("Failed to read key"); |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 237 | fclose(fp); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 238 | RSA_free(key->rsa); |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 239 | delete key; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 240 | return 0; |
| 241 | } |
| 242 | |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 243 | fclose(fp); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 244 | list_add_tail(list, &key->node); |
| 245 | return 1; |
| 246 | } |
| 247 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 248 | static int get_user_keyfilepath(char *filename, size_t len) |
| 249 | { |
| 250 | const char *format, *home; |
| 251 | char android_dir[PATH_MAX]; |
| 252 | struct stat buf; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 253 | #ifdef _WIN32 |
Spencer Low | cf4ff64 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 254 | std::string home_str; |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 255 | home = getenv("ANDROID_SDK_HOME"); |
| 256 | if (!home) { |
Spencer Low | cf4ff64 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 257 | WCHAR path[MAX_PATH]; |
Spencer Low | 8df9032 | 2015-08-02 18:50:17 -0700 | [diff] [blame] | 258 | const HRESULT hr = SHGetFolderPathW(NULL, CSIDL_PROFILE, NULL, 0, path); |
| 259 | if (FAILED(hr)) { |
David Pursell | 5f787ed | 2016-01-27 08:52:53 -0800 | [diff] [blame] | 260 | D("SHGetFolderPathW failed: %s", android::base::SystemErrorCodeToString(hr).c_str()); |
Spencer Low | cf4ff64 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 261 | return -1; |
| 262 | } |
Spencer Low | d21dc82 | 2015-11-12 15:20:15 -0800 | [diff] [blame] | 263 | if (!android::base::WideToUTF8(path, &home_str)) { |
| 264 | return -1; |
| 265 | } |
Spencer Low | cf4ff64 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 266 | home = home_str.c_str(); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 267 | } |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 268 | format = "%s\\%s"; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 269 | #else |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 270 | home = getenv("HOME"); |
| 271 | if (!home) |
| 272 | return -1; |
| 273 | format = "%s/%s"; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 274 | #endif |
| 275 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 276 | D("home '%s'", home); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 277 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 278 | if (snprintf(android_dir, sizeof(android_dir), format, home, |
| 279 | ANDROID_PATH) >= (int)sizeof(android_dir)) |
| 280 | return -1; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 281 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 282 | if (stat(android_dir, &buf)) { |
| 283 | if (adb_mkdir(android_dir, 0750) < 0) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 284 | D("Cannot mkdir '%s'", android_dir); |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 285 | return -1; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 286 | } |
| 287 | } |
| 288 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 289 | return snprintf(filename, len, format, android_dir, ADB_KEY_FILE); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | static int get_user_key(struct listnode *list) |
| 293 | { |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 294 | struct stat buf; |
| 295 | char path[PATH_MAX]; |
| 296 | int ret; |
| 297 | |
| 298 | ret = get_user_keyfilepath(path, sizeof(path)); |
| 299 | if (ret < 0 || ret >= (signed)sizeof(path)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 300 | D("Error getting user key filename"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 301 | return 0; |
| 302 | } |
| 303 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 304 | D("user key '%s'", path); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 305 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 306 | if (stat(path, &buf) == -1) { |
| 307 | if (!generate_key(path)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 308 | D("Failed to generate new key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 309 | return 0; |
| 310 | } |
| 311 | } |
| 312 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 313 | return read_key(path, list); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 314 | } |
| 315 | |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 316 | static void get_vendor_keys(struct listnode* key_list) { |
| 317 | const char* adb_keys_path = getenv("ADB_VENDOR_KEYS"); |
| 318 | if (adb_keys_path == nullptr) { |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 319 | return; |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 320 | } |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 321 | |
Elliott Hughes | 65fe251 | 2015-10-07 15:59:35 -0700 | [diff] [blame] | 322 | for (const auto& path : android::base::Split(adb_keys_path, ENV_PATH_SEPARATOR_STR)) { |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 323 | if (!read_key(path.c_str(), key_list)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 324 | D("Failed to read '%s'", path.c_str()); |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 325 | } |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 326 | } |
| 327 | } |
| 328 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 329 | int adb_auth_sign(void *node, const unsigned char* token, size_t token_size, |
| 330 | unsigned char* sig) |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 331 | { |
| 332 | unsigned int len; |
| 333 | struct adb_private_key *key = node_to_item(node, struct adb_private_key, node); |
| 334 | |
Sami Tolvanen | 7b9c20d | 2015-01-27 16:48:35 +0000 | [diff] [blame] | 335 | if (token_size != TOKEN_SIZE) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 336 | D("Unexpected token size %zd", token_size); |
Sami Tolvanen | 7b9c20d | 2015-01-27 16:48:35 +0000 | [diff] [blame] | 337 | return 0; |
| 338 | } |
| 339 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 340 | if (!RSA_sign(NID_sha1, token, token_size, sig, &len, key->rsa)) { |
| 341 | return 0; |
| 342 | } |
| 343 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 344 | D("adb_auth_sign len=%d", len); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 345 | return (int)len; |
| 346 | } |
| 347 | |
| 348 | void *adb_auth_nextkey(void *current) |
| 349 | { |
| 350 | struct listnode *item; |
| 351 | |
| 352 | if (list_empty(&key_list)) |
| 353 | return NULL; |
| 354 | |
| 355 | if (!current) |
| 356 | return list_head(&key_list); |
| 357 | |
| 358 | list_for_each(item, &key_list) { |
| 359 | if (item == current) { |
| 360 | /* current is the last item, we tried all the keys */ |
| 361 | if (item->next == &key_list) |
| 362 | return NULL; |
| 363 | return item->next; |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | return NULL; |
| 368 | } |
| 369 | |
| 370 | int adb_auth_get_userkey(unsigned char *data, size_t len) |
| 371 | { |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 372 | char path[PATH_MAX]; |
| 373 | int ret = get_user_keyfilepath(path, sizeof(path) - 4); |
| 374 | if (ret < 0 || ret >= (signed)(sizeof(path) - 4)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 375 | D("Error getting user key filename"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 376 | return 0; |
| 377 | } |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 378 | strcat(path, ".pub"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 379 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 380 | // TODO(danalbert): ReadFileToString |
Spencer Low | 6ac5d7d | 2015-05-22 20:09:06 -0700 | [diff] [blame] | 381 | // Note that on Windows, load_file() does not do CR/LF translation, but |
| 382 | // ReadFileToString() uses the C Runtime which uses CR/LF translation by |
| 383 | // default (by is overridable with _setmode()). |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 384 | unsigned size; |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 385 | char* file_data = reinterpret_cast<char*>(load_file(path, &size)); |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 386 | if (file_data == nullptr) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 387 | D("Can't load '%s'", path); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 388 | return 0; |
| 389 | } |
| 390 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 391 | if (len < (size_t)(size + 1)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 392 | D("%s: Content too large ret=%d", path, size); |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 393 | free(file_data); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 394 | return 0; |
| 395 | } |
| 396 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 397 | memcpy(data, file_data, size); |
| 398 | free(file_data); |
| 399 | file_data = nullptr; |
| 400 | data[size] = '\0'; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 401 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 402 | return size + 1; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 403 | } |
| 404 | |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 405 | int adb_auth_keygen(const char* filename) { |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 406 | return (generate_key(filename) == 0); |
| 407 | } |
| 408 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 409 | void adb_auth_init(void) |
| 410 | { |
| 411 | int ret; |
| 412 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 413 | D("adb_auth_init"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 414 | |
| 415 | list_init(&key_list); |
| 416 | |
| 417 | ret = get_user_key(&key_list); |
| 418 | if (!ret) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 419 | D("Failed to get user key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 420 | return; |
| 421 | } |
| 422 | |
| 423 | get_vendor_keys(&key_list); |
| 424 | } |