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 | |
| 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 | |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 46 | #include <base/strings.h> |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 47 | #include <cutils/list.h> |
| 48 | |
| 49 | #include <openssl/evp.h> |
| 50 | #include <openssl/objects.h> |
| 51 | #include <openssl/pem.h> |
| 52 | #include <openssl/rsa.h> |
| 53 | #include <openssl/sha.h> |
| 54 | |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 55 | #if defined(OPENSSL_IS_BORINGSSL) |
| 56 | #include <openssl/base64.h> |
| 57 | #endif |
| 58 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 59 | #define ANDROID_PATH ".android" |
| 60 | #define ADB_KEY_FILE "adbkey" |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 61 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 62 | struct adb_private_key { |
| 63 | struct listnode node; |
| 64 | RSA *rsa; |
| 65 | }; |
| 66 | |
| 67 | static struct listnode key_list; |
| 68 | |
| 69 | |
| 70 | /* Convert OpenSSL RSA private key to android pre-computed RSAPublicKey format */ |
| 71 | static int RSA_to_RSAPublicKey(RSA *rsa, RSAPublicKey *pkey) |
| 72 | { |
| 73 | int ret = 1; |
| 74 | unsigned int i; |
| 75 | |
| 76 | BN_CTX* ctx = BN_CTX_new(); |
| 77 | BIGNUM* r32 = BN_new(); |
| 78 | BIGNUM* rr = BN_new(); |
| 79 | BIGNUM* r = BN_new(); |
| 80 | BIGNUM* rem = BN_new(); |
| 81 | BIGNUM* n = BN_new(); |
| 82 | BIGNUM* n0inv = BN_new(); |
| 83 | |
| 84 | if (RSA_size(rsa) != RSANUMBYTES) { |
| 85 | ret = 0; |
| 86 | goto out; |
| 87 | } |
| 88 | |
| 89 | BN_set_bit(r32, 32); |
| 90 | BN_copy(n, rsa->n); |
| 91 | BN_set_bit(r, RSANUMWORDS * 32); |
| 92 | BN_mod_sqr(rr, r, n, ctx); |
| 93 | BN_div(NULL, rem, n, r32, ctx); |
| 94 | BN_mod_inverse(n0inv, rem, r32, ctx); |
| 95 | |
| 96 | pkey->len = RSANUMWORDS; |
| 97 | pkey->n0inv = 0 - BN_get_word(n0inv); |
| 98 | for (i = 0; i < RSANUMWORDS; i++) { |
| 99 | BN_div(rr, rem, rr, r32, ctx); |
| 100 | pkey->rr[i] = BN_get_word(rem); |
| 101 | BN_div(n, rem, n, r32, ctx); |
| 102 | pkey->n[i] = BN_get_word(rem); |
| 103 | } |
| 104 | pkey->exponent = BN_get_word(rsa->e); |
| 105 | |
| 106 | out: |
| 107 | BN_free(n0inv); |
| 108 | BN_free(n); |
| 109 | BN_free(rem); |
| 110 | BN_free(r); |
| 111 | BN_free(rr); |
| 112 | BN_free(r32); |
| 113 | BN_CTX_free(ctx); |
| 114 | |
| 115 | return ret; |
| 116 | } |
| 117 | |
| 118 | static void get_user_info(char *buf, size_t len) |
| 119 | { |
| 120 | char hostname[1024], username[1024]; |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 121 | int ret = -1; |
| 122 | |
| 123 | if (getenv("HOSTNAME") != NULL) { |
| 124 | strncpy(hostname, getenv("HOSTNAME"), sizeof(hostname)); |
| 125 | hostname[sizeof(hostname)-1] = '\0'; |
| 126 | ret = 0; |
| 127 | } |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 128 | |
| 129 | #ifndef _WIN32 |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 130 | if (ret < 0) |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 131 | ret = gethostname(hostname, sizeof(hostname)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 132 | #endif |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 133 | if (ret < 0) |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 134 | strcpy(hostname, "unknown"); |
| 135 | |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 136 | ret = -1; |
| 137 | |
| 138 | if (getenv("LOGNAME") != NULL) { |
| 139 | strncpy(username, getenv("LOGNAME"), sizeof(username)); |
| 140 | username[sizeof(username)-1] = '\0'; |
| 141 | ret = 0; |
| 142 | } |
| 143 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 144 | #if !defined _WIN32 && !defined ADB_HOST_ON_TARGET |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 145 | if (ret < 0) |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 146 | ret = getlogin_r(username, sizeof(username)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 147 | #endif |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 148 | if (ret < 0) |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 149 | strcpy(username, "unknown"); |
| 150 | |
| 151 | ret = snprintf(buf, len, " %s@%s", username, hostname); |
| 152 | if (ret >= (signed)len) |
| 153 | buf[len - 1] = '\0'; |
| 154 | } |
| 155 | |
| 156 | static int write_public_keyfile(RSA *private_key, const char *private_key_path) |
| 157 | { |
| 158 | RSAPublicKey pkey; |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 159 | FILE *outfile = NULL; |
Tamas Berghammer | 3d2904c | 2015-07-13 19:12:28 +0100 | [diff] [blame] | 160 | char path[PATH_MAX], info[MAX_PAYLOAD_V1]; |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 161 | uint8_t* encoded = nullptr; |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 162 | size_t encoded_length; |
| 163 | int ret = 0; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 164 | |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 165 | if (snprintf(path, sizeof(path), "%s.pub", private_key_path) >= |
| 166 | (int)sizeof(path)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 167 | D("Path too long while writing public key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 168 | return 0; |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 169 | } |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 170 | |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 171 | if (!RSA_to_RSAPublicKey(private_key, &pkey)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 172 | D("Failed to convert to publickey"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 173 | return 0; |
| 174 | } |
| 175 | |
Spencer Low | 9b96031 | 2015-05-07 19:08:29 -0700 | [diff] [blame] | 176 | outfile = fopen(path, "w"); |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 177 | if (!outfile) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 178 | D("Failed to open '%s'", path); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 179 | return 0; |
| 180 | } |
| 181 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 182 | D("Writing public key to '%s'", path); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 183 | |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 184 | #if defined(OPENSSL_IS_BORINGSSL) |
| 185 | if (!EVP_EncodedLength(&encoded_length, sizeof(pkey))) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 186 | D("Public key too large to base64 encode"); |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 187 | goto out; |
| 188 | } |
| 189 | #else |
| 190 | /* While we switch from OpenSSL to BoringSSL we have to implement |
| 191 | * |EVP_EncodedLength| here. */ |
| 192 | encoded_length = 1 + ((sizeof(pkey) + 2) / 3 * 4); |
| 193 | #endif |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 194 | |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 195 | encoded = new uint8_t[encoded_length]; |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 196 | if (encoded == nullptr) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 197 | D("Allocation failure"); |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 198 | goto out; |
| 199 | } |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 200 | |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 201 | encoded_length = EVP_EncodeBlock(encoded, (uint8_t*) &pkey, sizeof(pkey)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 202 | get_user_info(info, sizeof(info)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 203 | |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 204 | if (fwrite(encoded, encoded_length, 1, outfile) != 1 || |
| 205 | fwrite(info, strlen(info), 1, outfile) != 1) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 206 | D("Write error while writing public key"); |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 207 | goto out; |
| 208 | } |
| 209 | |
| 210 | ret = 1; |
| 211 | |
| 212 | out: |
| 213 | if (outfile != NULL) { |
| 214 | fclose(outfile); |
| 215 | } |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 216 | delete[] encoded; |
Adam Langley | 179d9d6 | 2014-09-03 14:34:47 -0700 | [diff] [blame] | 217 | return ret; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | static int generate_key(const char *file) |
| 221 | { |
| 222 | EVP_PKEY* pkey = EVP_PKEY_new(); |
| 223 | BIGNUM* exponent = BN_new(); |
| 224 | RSA* rsa = RSA_new(); |
Benoit Goby | 64b3103 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 225 | mode_t old_mask; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 226 | FILE *f = NULL; |
| 227 | int ret = 0; |
| 228 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 229 | D("generate_key '%s'", file); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 230 | |
| 231 | if (!pkey || !exponent || !rsa) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 232 | D("Failed to allocate key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 233 | goto out; |
| 234 | } |
| 235 | |
| 236 | BN_set_word(exponent, RSA_F4); |
| 237 | RSA_generate_key_ex(rsa, 2048, exponent, NULL); |
| 238 | EVP_PKEY_set1_RSA(pkey, rsa); |
| 239 | |
Benoit Goby | 64b3103 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 240 | old_mask = umask(077); |
| 241 | |
Spencer Low | 9b96031 | 2015-05-07 19:08:29 -0700 | [diff] [blame] | 242 | f = fopen(file, "w"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 243 | if (!f) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 244 | D("Failed to open '%s'", file); |
Benoit Goby | 64b3103 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 245 | umask(old_mask); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 246 | goto out; |
| 247 | } |
| 248 | |
Benoit Goby | 64b3103 | 2012-08-31 12:14:21 -0700 | [diff] [blame] | 249 | umask(old_mask); |
| 250 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 251 | if (!PEM_write_PrivateKey(f, pkey, NULL, NULL, 0, NULL, NULL)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 252 | D("Failed to write key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 253 | goto out; |
| 254 | } |
| 255 | |
| 256 | if (!write_public_keyfile(rsa, file)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 257 | D("Failed to write public key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 258 | goto out; |
| 259 | } |
| 260 | |
| 261 | ret = 1; |
| 262 | |
| 263 | out: |
| 264 | if (f) |
| 265 | fclose(f); |
| 266 | EVP_PKEY_free(pkey); |
| 267 | RSA_free(rsa); |
| 268 | BN_free(exponent); |
| 269 | return ret; |
| 270 | } |
| 271 | |
| 272 | static int read_key(const char *file, struct listnode *list) |
| 273 | { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 274 | D("read_key '%s'", file); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 275 | |
Spencer Low | 9b96031 | 2015-05-07 19:08:29 -0700 | [diff] [blame] | 276 | FILE* fp = fopen(file, "r"); |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 277 | if (!fp) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 278 | D("Failed to open '%s': %s", file, strerror(errno)); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 279 | return 0; |
| 280 | } |
| 281 | |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 282 | adb_private_key* key = new adb_private_key; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 283 | key->rsa = RSA_new(); |
| 284 | |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 285 | if (!PEM_read_RSAPrivateKey(fp, &key->rsa, NULL, NULL)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 286 | D("Failed to read key"); |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 287 | fclose(fp); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 288 | RSA_free(key->rsa); |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 289 | delete key; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 290 | return 0; |
| 291 | } |
| 292 | |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 293 | fclose(fp); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 294 | list_add_tail(list, &key->node); |
| 295 | return 1; |
| 296 | } |
| 297 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 298 | static int get_user_keyfilepath(char *filename, size_t len) |
| 299 | { |
| 300 | const char *format, *home; |
| 301 | char android_dir[PATH_MAX]; |
| 302 | struct stat buf; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 303 | #ifdef _WIN32 |
Spencer Low | cf4ff64 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 304 | std::string home_str; |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 305 | home = getenv("ANDROID_SDK_HOME"); |
| 306 | if (!home) { |
Spencer Low | cf4ff64 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 307 | WCHAR path[MAX_PATH]; |
Spencer Low | 8df9032 | 2015-08-02 18:50:17 -0700 | [diff] [blame] | 308 | const HRESULT hr = SHGetFolderPathW(NULL, CSIDL_PROFILE, NULL, 0, path); |
| 309 | if (FAILED(hr)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 310 | D("SHGetFolderPathW failed: %s", |
Spencer Low | 8df9032 | 2015-08-02 18:50:17 -0700 | [diff] [blame] | 311 | SystemErrorCodeToString(hr).c_str()); |
Spencer Low | cf4ff64 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 312 | return -1; |
| 313 | } |
Spencer Low | d21dc82 | 2015-11-12 15:20:15 -0800 | [diff] [blame^] | 314 | if (!android::base::WideToUTF8(path, &home_str)) { |
| 315 | return -1; |
| 316 | } |
Spencer Low | cf4ff64 | 2015-05-11 01:08:48 -0700 | [diff] [blame] | 317 | home = home_str.c_str(); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 318 | } |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 319 | format = "%s\\%s"; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 320 | #else |
Dan Albert | 286bb6d | 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 | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 325 | #endif |
| 326 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 327 | D("home '%s'", home); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 328 | |
Dan Albert | 286bb6d | 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 | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 332 | |
Dan Albert | 286bb6d | 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 | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 335 | D("Cannot mkdir '%s'", android_dir); |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 336 | return -1; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 337 | } |
| 338 | } |
| 339 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 340 | return snprintf(filename, len, format, android_dir, ADB_KEY_FILE); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | static int get_user_key(struct listnode *list) |
| 344 | { |
Dan Albert | 286bb6d | 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 | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 351 | D("Error getting user key filename"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 352 | return 0; |
| 353 | } |
| 354 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 355 | D("user key '%s'", path); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 356 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 357 | if (stat(path, &buf) == -1) { |
| 358 | if (!generate_key(path)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 359 | D("Failed to generate new key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 360 | return 0; |
| 361 | } |
| 362 | } |
| 363 | |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 364 | return read_key(path, list); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 365 | } |
| 366 | |
Elliott Hughes | 8d5fa6d | 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 | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 370 | return; |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 371 | } |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 372 | |
Elliott Hughes | 65fe251 | 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 | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 374 | if (!read_key(path.c_str(), key_list)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 375 | D("Failed to read '%s'", path.c_str()); |
Elliott Hughes | 8d5fa6d | 2015-04-24 23:02:00 -0700 | [diff] [blame] | 376 | } |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 377 | } |
| 378 | } |
| 379 | |
Dan Albert | bac3474 | 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 | d5fcafa | 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 | 7b9c20d | 2015-01-27 16:48:35 +0000 | [diff] [blame] | 386 | if (token_size != TOKEN_SIZE) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 387 | D("Unexpected token size %zd", token_size); |
Sami Tolvanen | 7b9c20d | 2015-01-27 16:48:35 +0000 | [diff] [blame] | 388 | return 0; |
| 389 | } |
| 390 | |
Benoit Goby | d5fcafa | 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 | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 395 | D("adb_auth_sign len=%d", len); |
Benoit Goby | d5fcafa | 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 | 286bb6d | 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 | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 426 | D("Error getting user key filename"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 427 | return 0; |
| 428 | } |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 429 | strcat(path, ".pub"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 430 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 431 | // TODO(danalbert): ReadFileToString |
Spencer Low | 6ac5d7d | 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 | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 435 | unsigned size; |
Dan Albert | 286bb6d | 2015-07-09 20:35:09 +0000 | [diff] [blame] | 436 | char* file_data = reinterpret_cast<char*>(load_file(path, &size)); |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 437 | if (file_data == nullptr) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 438 | D("Can't load '%s'", path); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 439 | return 0; |
| 440 | } |
| 441 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 442 | if (len < (size_t)(size + 1)) { |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 443 | D("%s: Content too large ret=%d", path, size); |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 444 | free(file_data); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 445 | return 0; |
| 446 | } |
| 447 | |
Dan Albert | bac3474 | 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 | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 452 | |
Dan Albert | bac3474 | 2015-02-25 17:51:28 -0800 | [diff] [blame] | 453 | return size + 1; |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 454 | } |
| 455 | |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 456 | int adb_auth_keygen(const char* filename) { |
Nick Kralevich | bea3f9c | 2014-11-13 15:17:29 -0800 | [diff] [blame] | 457 | return (generate_key(filename) == 0); |
| 458 | } |
| 459 | |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 460 | void adb_auth_init(void) |
| 461 | { |
| 462 | int ret; |
| 463 | |
Yabin Cui | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 464 | D("adb_auth_init"); |
Benoit Goby | d5fcafa | 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 | 7a3f8d6 | 2015-09-02 17:44:28 -0700 | [diff] [blame] | 470 | D("Failed to get user key"); |
Benoit Goby | d5fcafa | 2012-04-12 12:23:49 -0700 | [diff] [blame] | 471 | return; |
| 472 | } |
| 473 | |
| 474 | get_vendor_keys(&key_list); |
| 475 | } |