Benoit Goby | 2cc19e4 | 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 | 19bec5b | 2015-09-22 15:52:57 -0700 | [diff] [blame] | 17 | #define TRACE_TAG AUTH |
Dan Albert | db6fe64 | 2015-03-19 15:21:08 -0700 | [diff] [blame] | 18 | |
| 19 | #include "sysdeps.h" |
| 20 | #include "adb_auth.h" |
| 21 | |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 22 | #include <stdio.h> |
Christopher Ferris | 054d170 | 2014-11-06 14:34:24 -0800 | [diff] [blame] | 23 | #include <stdlib.h> |
Dan Albert | db6fe64 | 2015-03-19 15:21:08 -0700 | [diff] [blame] | 24 | #include <string.h> |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 25 | |
| 26 | #ifdef _WIN32 |
Christopher Ferris | 054d170 | 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 | 2cc19e4 | 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 | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 37 | |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 38 | #include "adb.h" |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 39 | |
| 40 | /* HACK: we need the RSAPublicKey struct |
| 41 | * but RSA_verify conflits with openssl */ |
| 42 | #define RSA_verify RSA_verify_mincrypt |
| 43 | #include "mincrypt/rsa.h" |
| 44 | #undef RSA_verify |
| 45 | |
David Pursell | c573d52 | 2016-01-27 08:52:53 -0800 | [diff] [blame^] | 46 | #include <android-base/errors.h> |
Elliott Hughes | f55ead9 | 2015-12-04 22:00:26 -0800 | [diff] [blame] | 47 | #include <android-base/strings.h> |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 48 | #include <cutils/list.h> |
| 49 | |
| 50 | #include <openssl/evp.h> |
| 51 | #include <openssl/objects.h> |
| 52 | #include <openssl/pem.h> |
| 53 | #include <openssl/rsa.h> |
| 54 | #include <openssl/sha.h> |
| 55 | |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 56 | #if defined(OPENSSL_IS_BORINGSSL) |
| 57 | #include <openssl/base64.h> |
| 58 | #endif |
| 59 | |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 60 | #define ANDROID_PATH ".android" |
| 61 | #define ADB_KEY_FILE "adbkey" |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 62 | |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 63 | struct adb_private_key { |
| 64 | struct listnode node; |
| 65 | RSA *rsa; |
| 66 | }; |
| 67 | |
| 68 | static struct listnode key_list; |
| 69 | |
| 70 | |
| 71 | /* Convert OpenSSL RSA private key to android pre-computed RSAPublicKey format */ |
| 72 | static int RSA_to_RSAPublicKey(RSA *rsa, RSAPublicKey *pkey) |
| 73 | { |
| 74 | int ret = 1; |
| 75 | unsigned int i; |
| 76 | |
| 77 | BN_CTX* ctx = BN_CTX_new(); |
| 78 | BIGNUM* r32 = BN_new(); |
| 79 | BIGNUM* rr = BN_new(); |
| 80 | BIGNUM* r = BN_new(); |
| 81 | BIGNUM* rem = BN_new(); |
| 82 | BIGNUM* n = BN_new(); |
| 83 | BIGNUM* n0inv = BN_new(); |
| 84 | |
| 85 | if (RSA_size(rsa) != RSANUMBYTES) { |
| 86 | ret = 0; |
| 87 | goto out; |
| 88 | } |
| 89 | |
| 90 | BN_set_bit(r32, 32); |
| 91 | BN_copy(n, rsa->n); |
| 92 | BN_set_bit(r, RSANUMWORDS * 32); |
| 93 | BN_mod_sqr(rr, r, n, ctx); |
| 94 | BN_div(NULL, rem, n, r32, ctx); |
| 95 | BN_mod_inverse(n0inv, rem, r32, ctx); |
| 96 | |
| 97 | pkey->len = RSANUMWORDS; |
| 98 | pkey->n0inv = 0 - BN_get_word(n0inv); |
| 99 | for (i = 0; i < RSANUMWORDS; i++) { |
| 100 | BN_div(rr, rem, rr, r32, ctx); |
| 101 | pkey->rr[i] = BN_get_word(rem); |
| 102 | BN_div(n, rem, n, r32, ctx); |
| 103 | pkey->n[i] = BN_get_word(rem); |
| 104 | } |
| 105 | pkey->exponent = BN_get_word(rsa->e); |
| 106 | |
| 107 | out: |
| 108 | BN_free(n0inv); |
| 109 | BN_free(n); |
| 110 | BN_free(rem); |
| 111 | BN_free(r); |
| 112 | BN_free(rr); |
| 113 | BN_free(r32); |
| 114 | BN_CTX_free(ctx); |
| 115 | |
| 116 | return ret; |
| 117 | } |
| 118 | |
| 119 | static void get_user_info(char *buf, size_t len) |
| 120 | { |
| 121 | char hostname[1024], username[1024]; |
Nick Kralevich | 6183c96 | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 122 | int ret = -1; |
| 123 | |
| 124 | if (getenv("HOSTNAME") != NULL) { |
| 125 | strncpy(hostname, getenv("HOSTNAME"), sizeof(hostname)); |
| 126 | hostname[sizeof(hostname)-1] = '\0'; |
| 127 | ret = 0; |
| 128 | } |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 129 | |
| 130 | #ifndef _WIN32 |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 131 | if (ret < 0) |
Nick Kralevich | 6183c96 | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 132 | ret = gethostname(hostname, sizeof(hostname)); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 133 | #endif |
Nick Kralevich | 6183c96 | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 134 | if (ret < 0) |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 135 | strcpy(hostname, "unknown"); |
| 136 | |
Nick Kralevich | 6183c96 | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 137 | ret = -1; |
| 138 | |
| 139 | if (getenv("LOGNAME") != NULL) { |
| 140 | strncpy(username, getenv("LOGNAME"), sizeof(username)); |
| 141 | username[sizeof(username)-1] = '\0'; |
| 142 | ret = 0; |
| 143 | } |
| 144 | |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 145 | #if !defined _WIN32 && !defined ADB_HOST_ON_TARGET |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 146 | if (ret < 0) |
Nick Kralevich | 6183c96 | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 147 | ret = getlogin_r(username, sizeof(username)); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 148 | #endif |
Nick Kralevich | 6183c96 | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 149 | if (ret < 0) |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 150 | strcpy(username, "unknown"); |
| 151 | |
| 152 | ret = snprintf(buf, len, " %s@%s", username, hostname); |
| 153 | if (ret >= (signed)len) |
| 154 | buf[len - 1] = '\0'; |
| 155 | } |
| 156 | |
| 157 | static int write_public_keyfile(RSA *private_key, const char *private_key_path) |
| 158 | { |
| 159 | RSAPublicKey pkey; |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 160 | FILE *outfile = NULL; |
Tamas Berghammer | a1c60c0 | 2015-07-13 19:12:28 +0100 | [diff] [blame] | 161 | char path[PATH_MAX], info[MAX_PAYLOAD_V1]; |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 162 | uint8_t* encoded = nullptr; |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 163 | size_t encoded_length; |
| 164 | int ret = 0; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 165 | |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 166 | if (snprintf(path, sizeof(path), "%s.pub", private_key_path) >= |
| 167 | (int)sizeof(path)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 168 | D("Path too long while writing public key"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 169 | return 0; |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 170 | } |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 171 | |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 172 | if (!RSA_to_RSAPublicKey(private_key, &pkey)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 173 | D("Failed to convert to publickey"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 174 | return 0; |
| 175 | } |
| 176 | |
Spencer Low | 60bca2d | 2015-05-07 19:08:29 -0700 | [diff] [blame] | 177 | outfile = fopen(path, "w"); |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 178 | if (!outfile) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 179 | D("Failed to open '%s'", path); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 180 | return 0; |
| 181 | } |
| 182 | |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 183 | D("Writing public key to '%s'", path); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 184 | |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 185 | #if defined(OPENSSL_IS_BORINGSSL) |
| 186 | if (!EVP_EncodedLength(&encoded_length, sizeof(pkey))) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 187 | D("Public key too large to base64 encode"); |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 188 | goto out; |
| 189 | } |
| 190 | #else |
| 191 | /* While we switch from OpenSSL to BoringSSL we have to implement |
| 192 | * |EVP_EncodedLength| here. */ |
| 193 | encoded_length = 1 + ((sizeof(pkey) + 2) / 3 * 4); |
| 194 | #endif |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 195 | |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 196 | encoded = new uint8_t[encoded_length]; |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 197 | if (encoded == nullptr) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 198 | D("Allocation failure"); |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 199 | goto out; |
| 200 | } |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 201 | |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 202 | encoded_length = EVP_EncodeBlock(encoded, (uint8_t*) &pkey, sizeof(pkey)); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 203 | get_user_info(info, sizeof(info)); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 204 | |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 205 | if (fwrite(encoded, encoded_length, 1, outfile) != 1 || |
| 206 | fwrite(info, strlen(info), 1, outfile) != 1) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 207 | D("Write error while writing public key"); |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 208 | goto out; |
| 209 | } |
| 210 | |
| 211 | ret = 1; |
| 212 | |
| 213 | out: |
| 214 | if (outfile != NULL) { |
| 215 | fclose(outfile); |
| 216 | } |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 217 | delete[] encoded; |
Adam Langley | 29f6cdb | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 218 | return ret; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | static int generate_key(const char *file) |
| 222 | { |
| 223 | EVP_PKEY* pkey = EVP_PKEY_new(); |
| 224 | BIGNUM* exponent = BN_new(); |
| 225 | RSA* rsa = RSA_new(); |
Benoit Goby | cb37c50 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 226 | mode_t old_mask; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 227 | FILE *f = NULL; |
| 228 | int ret = 0; |
| 229 | |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 230 | D("generate_key '%s'", file); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 231 | |
| 232 | if (!pkey || !exponent || !rsa) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 233 | D("Failed to allocate key"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 234 | goto out; |
| 235 | } |
| 236 | |
| 237 | BN_set_word(exponent, RSA_F4); |
| 238 | RSA_generate_key_ex(rsa, 2048, exponent, NULL); |
| 239 | EVP_PKEY_set1_RSA(pkey, rsa); |
| 240 | |
Benoit Goby | cb37c50 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 241 | old_mask = umask(077); |
| 242 | |
Spencer Low | 60bca2d | 2015-05-07 19:08:29 -0700 | [diff] [blame] | 243 | f = fopen(file, "w"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 244 | if (!f) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 245 | D("Failed to open '%s'", file); |
Benoit Goby | cb37c50 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 246 | umask(old_mask); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 247 | goto out; |
| 248 | } |
| 249 | |
Benoit Goby | cb37c50 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 250 | umask(old_mask); |
| 251 | |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 252 | if (!PEM_write_PrivateKey(f, pkey, NULL, NULL, 0, NULL, NULL)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 253 | D("Failed to write key"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 254 | goto out; |
| 255 | } |
| 256 | |
| 257 | if (!write_public_keyfile(rsa, file)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 258 | D("Failed to write public key"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 259 | goto out; |
| 260 | } |
| 261 | |
| 262 | ret = 1; |
| 263 | |
| 264 | out: |
| 265 | if (f) |
| 266 | fclose(f); |
| 267 | EVP_PKEY_free(pkey); |
| 268 | RSA_free(rsa); |
| 269 | BN_free(exponent); |
| 270 | return ret; |
| 271 | } |
| 272 | |
| 273 | static int read_key(const char *file, struct listnode *list) |
| 274 | { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 275 | D("read_key '%s'", file); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 276 | |
Spencer Low | 60bca2d | 2015-05-07 19:08:29 -0700 | [diff] [blame] | 277 | FILE* fp = fopen(file, "r"); |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 278 | if (!fp) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 279 | D("Failed to open '%s': %s", file, strerror(errno)); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 280 | return 0; |
| 281 | } |
| 282 | |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 283 | adb_private_key* key = new adb_private_key; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 284 | key->rsa = RSA_new(); |
| 285 | |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 286 | if (!PEM_read_RSAPrivateKey(fp, &key->rsa, NULL, NULL)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 287 | D("Failed to read key"); |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 288 | fclose(fp); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 289 | RSA_free(key->rsa); |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 290 | delete key; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 291 | return 0; |
| 292 | } |
| 293 | |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 294 | fclose(fp); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 295 | list_add_tail(list, &key->node); |
| 296 | return 1; |
| 297 | } |
| 298 | |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 299 | static int get_user_keyfilepath(char *filename, size_t len) |
| 300 | { |
| 301 | const char *format, *home; |
| 302 | char android_dir[PATH_MAX]; |
| 303 | struct stat buf; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 304 | #ifdef _WIN32 |
Spencer Low | 6815c07 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 305 | std::string home_str; |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 306 | home = getenv("ANDROID_SDK_HOME"); |
| 307 | if (!home) { |
Spencer Low | 6815c07 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 308 | WCHAR path[MAX_PATH]; |
Spencer Low | 1711e01 | 2015-08-02 18:50:17 -0700 | [diff] [blame] | 309 | const HRESULT hr = SHGetFolderPathW(NULL, CSIDL_PROFILE, NULL, 0, path); |
| 310 | if (FAILED(hr)) { |
David Pursell | c573d52 | 2016-01-27 08:52:53 -0800 | [diff] [blame^] | 311 | D("SHGetFolderPathW failed: %s", android::base::SystemErrorCodeToString(hr).c_str()); |
Spencer Low | 6815c07 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 312 | return -1; |
| 313 | } |
Spencer Low | 50f5bf1 | 2015-11-12 15:20:15 -0800 | [diff] [blame] | 314 | if (!android::base::WideToUTF8(path, &home_str)) { |
| 315 | return -1; |
| 316 | } |
Spencer Low | 6815c07 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 317 | home = home_str.c_str(); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 318 | } |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 319 | format = "%s\\%s"; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 320 | #else |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 321 | home = getenv("HOME"); |
| 322 | if (!home) |
| 323 | return -1; |
| 324 | format = "%s/%s"; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 325 | #endif |
| 326 | |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 327 | D("home '%s'", home); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 328 | |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 329 | if (snprintf(android_dir, sizeof(android_dir), format, home, |
| 330 | ANDROID_PATH) >= (int)sizeof(android_dir)) |
| 331 | return -1; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 332 | |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 333 | if (stat(android_dir, &buf)) { |
| 334 | if (adb_mkdir(android_dir, 0750) < 0) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 335 | D("Cannot mkdir '%s'", android_dir); |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 336 | return -1; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 337 | } |
| 338 | } |
| 339 | |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 340 | return snprintf(filename, len, format, android_dir, ADB_KEY_FILE); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | static int get_user_key(struct listnode *list) |
| 344 | { |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 345 | struct stat buf; |
| 346 | char path[PATH_MAX]; |
| 347 | int ret; |
| 348 | |
| 349 | ret = get_user_keyfilepath(path, sizeof(path)); |
| 350 | if (ret < 0 || ret >= (signed)sizeof(path)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 351 | D("Error getting user key filename"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 352 | return 0; |
| 353 | } |
| 354 | |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 355 | D("user key '%s'", path); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 356 | |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 357 | if (stat(path, &buf) == -1) { |
| 358 | if (!generate_key(path)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 359 | D("Failed to generate new key"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 360 | return 0; |
| 361 | } |
| 362 | } |
| 363 | |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 364 | return read_key(path, list); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 365 | } |
| 366 | |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 367 | static void get_vendor_keys(struct listnode* key_list) { |
| 368 | const char* adb_keys_path = getenv("ADB_VENDOR_KEYS"); |
| 369 | if (adb_keys_path == nullptr) { |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 370 | return; |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 371 | } |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 372 | |
Elliott Hughes | 8595283 | 2015-10-07 15:59:35 -0700 | [diff] [blame] | 373 | for (const auto& path : android::base::Split(adb_keys_path, ENV_PATH_SEPARATOR_STR)) { |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 374 | if (!read_key(path.c_str(), key_list)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 375 | D("Failed to read '%s'", path.c_str()); |
Elliott Hughes | fb2ba51 | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 376 | } |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 377 | } |
| 378 | } |
| 379 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 380 | int adb_auth_sign(void *node, const unsigned char* token, size_t token_size, |
| 381 | unsigned char* sig) |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 382 | { |
| 383 | unsigned int len; |
| 384 | struct adb_private_key *key = node_to_item(node, struct adb_private_key, node); |
| 385 | |
Sami Tolvanen | b92a35c | 2015-01-27 16:48:35 +0000 | [diff] [blame] | 386 | if (token_size != TOKEN_SIZE) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 387 | D("Unexpected token size %zd", token_size); |
Sami Tolvanen | b92a35c | 2015-01-27 16:48:35 +0000 | [diff] [blame] | 388 | return 0; |
| 389 | } |
| 390 | |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 391 | if (!RSA_sign(NID_sha1, token, token_size, sig, &len, key->rsa)) { |
| 392 | return 0; |
| 393 | } |
| 394 | |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 395 | D("adb_auth_sign len=%d", len); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 396 | return (int)len; |
| 397 | } |
| 398 | |
| 399 | void *adb_auth_nextkey(void *current) |
| 400 | { |
| 401 | struct listnode *item; |
| 402 | |
| 403 | if (list_empty(&key_list)) |
| 404 | return NULL; |
| 405 | |
| 406 | if (!current) |
| 407 | return list_head(&key_list); |
| 408 | |
| 409 | list_for_each(item, &key_list) { |
| 410 | if (item == current) { |
| 411 | /* current is the last item, we tried all the keys */ |
| 412 | if (item->next == &key_list) |
| 413 | return NULL; |
| 414 | return item->next; |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | return NULL; |
| 419 | } |
| 420 | |
| 421 | int adb_auth_get_userkey(unsigned char *data, size_t len) |
| 422 | { |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 423 | char path[PATH_MAX]; |
| 424 | int ret = get_user_keyfilepath(path, sizeof(path) - 4); |
| 425 | if (ret < 0 || ret >= (signed)(sizeof(path) - 4)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 426 | D("Error getting user key filename"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 427 | return 0; |
| 428 | } |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 429 | strcat(path, ".pub"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 430 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 431 | // TODO(danalbert): ReadFileToString |
Spencer Low | 3a2421b | 2015-05-22 20:09:06 -0700 | [diff] [blame] | 432 | // Note that on Windows, load_file() does not do CR/LF translation, but |
| 433 | // ReadFileToString() uses the C Runtime which uses CR/LF translation by |
| 434 | // default (by is overridable with _setmode()). |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 435 | unsigned size; |
Dan Albert | 3d978e6 | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 436 | char* file_data = reinterpret_cast<char*>(load_file(path, &size)); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 437 | if (file_data == nullptr) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 438 | D("Can't load '%s'", path); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 439 | return 0; |
| 440 | } |
| 441 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 442 | if (len < (size_t)(size + 1)) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 443 | D("%s: Content too large ret=%d", path, size); |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 444 | free(file_data); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 445 | return 0; |
| 446 | } |
| 447 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 448 | memcpy(data, file_data, size); |
| 449 | free(file_data); |
| 450 | file_data = nullptr; |
| 451 | data[size] = '\0'; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 452 | |
Dan Albert | f30d73c | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 453 | return size + 1; |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 454 | } |
| 455 | |
Nick Kralevich | 6183c96 | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 456 | int adb_auth_keygen(const char* filename) { |
Nick Kralevich | 6183c96 | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 457 | return (generate_key(filename) == 0); |
| 458 | } |
| 459 | |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 460 | void adb_auth_init(void) |
| 461 | { |
| 462 | int ret; |
| 463 | |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 464 | D("adb_auth_init"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 465 | |
| 466 | list_init(&key_list); |
| 467 | |
| 468 | ret = get_user_key(&key_list); |
| 469 | if (!ret) { |
Yabin Cui | 815ad88 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 470 | D("Failed to get user key"); |
Benoit Goby | 2cc19e4 | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 471 | return; |
| 472 | } |
| 473 | |
| 474 | get_vendor_keys(&key_list); |
| 475 | } |