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1/*
2 * userpref.c
3 * contains methods to access user specific certificates IDs and more.
4 *
5 * Copyright (c) 2013-2021 Nikias Bassen, All Rights Reserved.
6 * Copyright (c) 2013-2014 Martin Szulecki All Rights Reserved.
7 * Copyright (c) 2008 Jonathan Beck All Rights Reserved.
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#ifdef HAVE_CONFIG_H
25#include <config.h>
26#endif
27
28#include <stdio.h>
29#include <stdint.h>
30#include <stdlib.h>
31#include <string.h>
32#ifdef HAVE_SYS_TYPES_H
33#include <sys/types.h>
34#endif
35#ifndef WIN32
36#include <pwd.h>
37#endif
38#include <unistd.h>
39#include <usbmuxd.h>
40#if defined(HAVE_OPENSSL)
41#include <openssl/bn.h>
42#include <openssl/pem.h>
43#include <openssl/rsa.h>
44#include <openssl/x509.h>
45#include <openssl/x509v3.h>
46#if OPENSSL_VERSION_NUMBER < 0x1010000fL || \
47 (defined(LIBRESSL_VERSION_NUMBER) && (LIBRESSL_VERSION_NUMBER < 0x20700000L))
48#define X509_set1_notBefore X509_set_notBefore
49#define X509_set1_notAfter X509_set_notAfter
50#endif
51#elif defined(HAVE_GNUTLS)
52#include <gnutls/gnutls.h>
53#include <gnutls/crypto.h>
54#include <gnutls/x509.h>
55#include <gcrypt.h>
56#include <libtasn1.h>
57#elif defined(HAVE_MBEDTLS)
58#include <mbedtls/ssl.h>
59#include <mbedtls/entropy.h>
60#include <mbedtls/ctr_drbg.h>
61#include <mbedtls/asn1write.h>
62#include <mbedtls/oid.h>
63#else
64#error No supported TLS/SSL library enabled
65#endif
66
67#include <dirent.h>
68#include <libgen.h>
69#include <sys/stat.h>
70#include <errno.h>
71
72#ifdef WIN32
73#include <shlobj.h>
74#endif
75
76#ifndef ETIMEDOUT
77#define ETIMEDOUT 138
78#endif
79
80#include <libimobiledevice-glue/utils.h>
81
82#include "userpref.h"
83#include "debug.h"
84
85#if defined(HAVE_GNUTLS)
86const ASN1_ARRAY_TYPE pkcs1_asn1_tab[] = {
87 {"PKCS1", 536872976, 0},
88 {0, 1073741836, 0},
89 {"RSAPublicKey", 536870917, 0},
90 {"modulus", 1073741827, 0},
91 {"publicExponent", 3, 0},
92 {0, 0, 0}
93};
94#endif
95
96#ifdef WIN32
97#define DIR_SEP '\\'
98#define DIR_SEP_S "\\"
99#else
100#define DIR_SEP '/'
101#define DIR_SEP_S "/"
102#endif
103
104#define USERPREF_CONFIG_EXTENSION ".plist"
105
106#ifdef WIN32
107#define USERPREF_CONFIG_DIR "Apple"DIR_SEP_S"Lockdown"
108#else
109#define USERPREF_CONFIG_DIR "lockdown"
110#endif
111
112#define USERPREF_CONFIG_FILE "SystemConfiguration"USERPREF_CONFIG_EXTENSION
113
114static char *__config_dir = NULL;
115
116#ifdef WIN32
117static char *userpref_utf16_to_utf8(wchar_t *unistr, long len, long *items_read, long *items_written)
118{
119 if (!unistr || (len <= 0)) return NULL;
120 char *outbuf = (char*)malloc(3*(len+1));
121 int p = 0;
122 int i = 0;
123
124 wchar_t wc;
125
126 while (i < len) {
127 wc = unistr[i++];
128 if (wc >= 0x800) {
129 outbuf[p++] = (char)(0xE0 + ((wc >> 12) & 0xF));
130 outbuf[p++] = (char)(0x80 + ((wc >> 6) & 0x3F));
131 outbuf[p++] = (char)(0x80 + (wc & 0x3F));
132 } else if (wc >= 0x80) {
133 outbuf[p++] = (char)(0xC0 + ((wc >> 6) & 0x1F));
134 outbuf[p++] = (char)(0x80 + (wc & 0x3F));
135 } else {
136 outbuf[p++] = (char)(wc & 0x7F);
137 }
138 }
139 if (items_read) {
140 *items_read = i;
141 }
142 if (items_written) {
143 *items_written = p;
144 }
145 outbuf[p] = 0;
146
147 return outbuf;
148}
149#endif
150
151const char *userpref_get_config_dir()
152{
153 char *base_config_dir = NULL;
154
155 if (__config_dir)
156 return __config_dir;
157
158#ifdef WIN32
159 wchar_t path[MAX_PATH+1];
160 HRESULT hr;
161 LPITEMIDLIST pidl = NULL;
162 BOOL b = FALSE;
163
164 hr = SHGetSpecialFolderLocation (NULL, CSIDL_COMMON_APPDATA, &pidl);
165 if (hr == S_OK) {
166 b = SHGetPathFromIDListW (pidl, path);
167 if (b) {
168 base_config_dir = userpref_utf16_to_utf8 (path, wcslen(path), NULL, NULL);
169 CoTaskMemFree (pidl);
170 }
171 }
172#else
173#ifdef __APPLE__
174 base_config_dir = strdup("/var/db");
175#else
176 base_config_dir = strdup("/var/lib");
177#endif
178#endif
179 __config_dir = string_concat(base_config_dir, DIR_SEP_S, USERPREF_CONFIG_DIR, NULL);
180
181 if (__config_dir) {
182 int i = strlen(__config_dir)-1;
183 while ((i > 0) && (__config_dir[i] == DIR_SEP)) {
184 __config_dir[i--] = '\0';
185 }
186 }
187
188 free(base_config_dir);
189
190 debug_info("initialized config_dir to %s", __config_dir);
191
192 return __config_dir;
193}
194
195/**
196 * Reads the SystemBUID from a previously generated configuration file.
197 *
198 * @note It is the responsibility of the calling function to free the returned system_buid.
199 * @param system_buid A pointer that will be set to a newly allocated string containing the
200 * SystemBUID upon successful return.
201 * @return 0 if the SystemBUID has been successfully retrieved or < 0 otherwise.
202 */
203int userpref_read_system_buid(char **system_buid)
204{
205 int res = usbmuxd_read_buid(system_buid);
206 if (res == 0) {
207 debug_info("using %s as %s", *system_buid, USERPREF_SYSTEM_BUID_KEY);
208 } else {
209 debug_info("could not read system buid, error %d", res);
210 }
211 return res;
212}
213
214/**
215 * Fills a list with UDIDs of devices that have been connected to this
216 * system before, i.e. for which a public key file exists.
217 *
218 * @param list A pointer to a char** initially pointing to NULL that will
219 * hold a newly allocated list of UDIDs upon successful return.
220 * The caller is responsible for freeing the memory. Note that if
221 * no public key file was found the list has to be freed too as it
222 * points to a terminating NULL element.
223 * @param count The number of UDIDs found. This parameter can be NULL if it
224 * is not required.
225 *
226 * @return USERPREF_E_SUCCESS on success, or USERPREF_E_INVALID_ARG if the
227 * list parameter is not pointing to NULL.
228 */
229userpref_error_t userpref_get_paired_udids(char ***list, unsigned int *count)
230{
231 DIR *config_dir;
232 const char *config_path = NULL;
233 unsigned int found = 0;
234
235 if (!list || (list && *list)) {
236 debug_info("ERROR: The list parameter needs to point to NULL!");
237 return USERPREF_E_INVALID_ARG;
238 }
239
240 if (count) {
241 *count = 0;
242 }
243 *list = (char**)malloc(sizeof(char*));
244
245 config_path = userpref_get_config_dir();
246 config_dir = opendir(config_path);
247 if (config_dir) {
248 struct dirent *entry;
249 while ((entry = readdir(config_dir))) {
250 if (strcmp(entry->d_name, USERPREF_CONFIG_FILE) == 0) {
251 /* ignore SystemConfiguration.plist */
252 continue;
253 }
254 char *ext = strrchr(entry->d_name, '.');
255 if (ext && (strcmp(ext, USERPREF_CONFIG_EXTENSION) == 0)) {
256 size_t len = strlen(entry->d_name) - strlen(USERPREF_CONFIG_EXTENSION);
257 char **newlist = (char**)realloc(*list, sizeof(char*) * (found+2));
258 if (!newlist) {
259 fprintf(stderr, "ERROR: Out of memory\n");
260 break;
261 }
262 *list = newlist;
263 char *tmp = (char*)malloc(len+1);
264 if (tmp) {
265 strncpy(tmp, entry->d_name, len);
266 tmp[len] = '\0';
267 }
268 (*list)[found] = tmp;
269 if (!tmp) {
270 fprintf(stderr, "ERROR: Out of memory\n");
271 break;
272 }
273 found++;
274 }
275 }
276 closedir(config_dir);
277 }
278 (*list)[found] = NULL;
279
280 if (count) {
281 *count = found;
282 }
283
284 return USERPREF_E_SUCCESS;
285}
286
287/**
288 * Save a pair record for a device.
289 *
290 * @param udid The device UDID as given by the device
291 * @param device_id The usbmux device id (handle) of the connected device, or 0
292 * @param pair_record The pair record to save
293 *
294 * @return 1 on success and 0 if no device record is given or if it has already
295 * been saved previously.
296 */
297userpref_error_t userpref_save_pair_record(const char *udid, uint32_t device_id, plist_t pair_record)
298{
299 char* record_data = NULL;
300 uint32_t record_size = 0;
301
302 plist_to_bin(pair_record, &record_data, &record_size);
303
304 int res = usbmuxd_save_pair_record_with_device_id(udid, device_id, record_data, record_size);
305
306 free(record_data);
307
308 return res == 0 ? USERPREF_E_SUCCESS: USERPREF_E_UNKNOWN_ERROR;
309}
310
311/**
312 * Read a pair record for a device.
313 *
314 * @param udid The device UDID as given by the device
315 * @param pair_record The pair record to read
316 *
317 * @return USERPREF_E_SUCCESS on success,
318 * USERPREF_E_NOENT if no pairing record was found,
319 * USERPREF_E_READ_ERROR if retrieving the pairing record from usbmuxd failed,
320 * or USERPREF_E_INVALID_CONF otherwise.
321 */
322userpref_error_t userpref_read_pair_record(const char *udid, plist_t *pair_record)
323{
324 char* record_data = NULL;
325 uint32_t record_size = 0;
326
327 int res = usbmuxd_read_pair_record(udid, &record_data, &record_size);
328 if (res < 0) {
329 free(record_data);
330 switch (-res) {
331 case ENOENT:
332 return USERPREF_E_NOENT;
333 case ETIMEDOUT:
334 return USERPREF_E_READ_ERROR;
335 default:
336 return USERPREF_E_INVALID_CONF;
337 }
338 }
339
340 *pair_record = NULL;
341 plist_from_memory(record_data, record_size, pair_record, NULL);
342 free(record_data);
343
344 if (!*pair_record) {
345 debug_info("Failed to parse pairing record");
346 return USERPREF_E_INVALID_CONF;
347 }
348 return USERPREF_E_SUCCESS;
349}
350
351/**
352 * Remove the pairing record stored for a device from this host.
353 *
354 * @param udid The udid of the device
355 *
356 * @return USERPREF_E_SUCCESS on success.
357 */
358userpref_error_t userpref_delete_pair_record(const char *udid)
359{
360 int res = usbmuxd_delete_pair_record(udid);
361
362 return res == 0 ? USERPREF_E_SUCCESS: USERPREF_E_UNKNOWN_ERROR;
363}
364
365#if defined(HAVE_OPENSSL)
366static int X509_add_ext_helper(X509 *cert, int nid, char *value)
367{
368 X509_EXTENSION *ex;
369 X509V3_CTX ctx;
370
371 /* No configuration database */
372 X509V3_set_ctx_nodb(&ctx);
373
374 X509V3_set_ctx(&ctx, NULL, cert, NULL, NULL, 0);
375 ex = X509V3_EXT_conf_nid(NULL, &ctx, nid, value);
376 if (!ex) {
377 debug_info("ERROR: X509V3_EXT_conf_nid(%d, %s) failed", nid, value);
378 return 0;
379 }
380
381 X509_add_ext(cert, ex, -1);
382 X509_EXTENSION_free(ex);
383
384 return 1;
385}
386#elif defined(HAVE_MBEDTLS)
387static int _mbedtls_x509write_crt_set_basic_constraints_critical(mbedtls_x509write_cert *ctx, int is_ca, int max_pathlen)
388{
389 int ret;
390 unsigned char buf[9];
391 unsigned char *c = buf + sizeof(buf);
392 size_t len = 0;
393
394 memset( buf, 0, sizeof(buf) );
395
396 if (is_ca && max_pathlen > 127)
397 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
398
399 if (is_ca) {
400 if (max_pathlen >= 0) {
401 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, max_pathlen ) );
402 }
403 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_bool( &c, buf, 1 ) );
404 }
405
406 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );
407 MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) );
408
409 return mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_BASIC_CONSTRAINTS, MBEDTLS_OID_SIZE( MBEDTLS_OID_BASIC_CONSTRAINTS ), 1, buf + sizeof(buf) - len, len );
410}
411#endif
412
413/**
414 * Private function to generate required private keys and certificates.
415 *
416 * @param pair_record a #PLIST_DICT that will be filled with the keys
417 * and certificates
418 * @param public_key the public key to use (device public key)
419 *
420 * @return 1 if keys were successfully generated, 0 otherwise
421 */
422userpref_error_t pair_record_generate_keys_and_certs(plist_t pair_record, key_data_t public_key)
423{
424 userpref_error_t ret = USERPREF_E_SSL_ERROR;
425
426 key_data_t dev_cert_pem = { NULL, 0 };
427 key_data_t root_key_pem = { NULL, 0 };
428 key_data_t root_cert_pem = { NULL, 0 };
429 key_data_t host_key_pem = { NULL, 0 };
430 key_data_t host_cert_pem = { NULL, 0 };
431
432 if (!pair_record || !public_key.data)
433 return USERPREF_E_INVALID_ARG;
434
435 debug_info("Generating keys and certificates...");
436
437#if defined(HAVE_OPENSSL)
438#if OPENSSL_VERSION_NUMBER >= 0x30000000L
439 EVP_PKEY* root_pkey = EVP_RSA_gen(2048);
440 EVP_PKEY* host_pkey = EVP_RSA_gen(2048);
441#else
442 BIGNUM *e = BN_new();
443 RSA* root_keypair = RSA_new();
444 RSA* host_keypair = RSA_new();
445
446 BN_set_word(e, 65537);
447
448 RSA_generate_key_ex(root_keypair, 2048, e, NULL);
449 RSA_generate_key_ex(host_keypair, 2048, e, NULL);
450
451 BN_free(e);
452
453 EVP_PKEY* root_pkey = EVP_PKEY_new();
454 EVP_PKEY_assign_RSA(root_pkey, root_keypair);
455
456 EVP_PKEY* host_pkey = EVP_PKEY_new();
457 EVP_PKEY_assign_RSA(host_pkey, host_keypair);
458#endif
459
460 /* generate root certificate */
461 X509* root_cert = X509_new();
462 {
463 /* set serial number */
464 ASN1_INTEGER* sn = ASN1_INTEGER_new();
465 ASN1_INTEGER_set(sn, 0);
466 X509_set_serialNumber(root_cert, sn);
467 ASN1_INTEGER_free(sn);
468
469 /* set version */
470 X509_set_version(root_cert, 2);
471
472 /* set x509v3 basic constraints */
473 X509_add_ext_helper(root_cert, NID_basic_constraints, (char*)"critical,CA:TRUE");
474
475 /* set key validity */
476 ASN1_TIME* asn1time = ASN1_TIME_new();
477 ASN1_TIME_set(asn1time, time(NULL));
478 X509_set1_notBefore(root_cert, asn1time);
479 ASN1_TIME_set(asn1time, time(NULL) + (60 * 60 * 24 * 365 * 10));
480 X509_set1_notAfter(root_cert, asn1time);
481 ASN1_TIME_free(asn1time);
482
483 /* use root public key for root cert */
484 X509_set_pubkey(root_cert, root_pkey);
485
486 /* sign root cert with root private key */
487 X509_sign(root_cert, root_pkey, EVP_sha1());
488 }
489
490 /* create host certificate */
491 X509* host_cert = X509_new();
492 {
493 /* set serial number */
494 ASN1_INTEGER* sn = ASN1_INTEGER_new();
495 ASN1_INTEGER_set(sn, 0);
496 X509_set_serialNumber(host_cert, sn);
497 ASN1_INTEGER_free(sn);
498
499 /* set version */
500 X509_set_version(host_cert, 2);
501
502 /* set x509v3 basic constraints */
503 X509_add_ext_helper(host_cert, NID_basic_constraints, (char*)"critical,CA:FALSE");
504
505 /* set x509v3 key usage */
506 X509_add_ext_helper(host_cert, NID_key_usage, (char*)"critical,digitalSignature,keyEncipherment");
507
508 /* set key validity */
509 ASN1_TIME* asn1time = ASN1_TIME_new();
510 ASN1_TIME_set(asn1time, time(NULL));
511 X509_set1_notBefore(host_cert, asn1time);
512 ASN1_TIME_set(asn1time, time(NULL) + (60 * 60 * 24 * 365 * 10));
513 X509_set1_notAfter(host_cert, asn1time);
514 ASN1_TIME_free(asn1time);
515
516 /* use host public key for host cert */
517 X509_set_pubkey(host_cert, host_pkey);
518
519 /* sign host cert with root private key */
520 X509_sign(host_cert, root_pkey, EVP_sha1());
521 }
522
523 if (root_cert && root_pkey && host_cert && host_pkey) {
524 BIO* membp;
525 char *bdata;
526
527 membp = BIO_new(BIO_s_mem());
528 if (PEM_write_bio_X509(membp, root_cert) > 0) {
529 root_cert_pem.size = BIO_get_mem_data(membp, &bdata);
530 root_cert_pem.data = (unsigned char*)malloc(root_cert_pem.size);
531 if (root_cert_pem.data) {
532 memcpy(root_cert_pem.data, bdata, root_cert_pem.size);
533 }
534 BIO_free(membp);
535 membp = NULL;
536 }
537 membp = BIO_new(BIO_s_mem());
538 if (PEM_write_bio_PrivateKey(membp, root_pkey, NULL, NULL, 0, 0, NULL) > 0) {
539 root_key_pem.size = BIO_get_mem_data(membp, &bdata);
540 root_key_pem.data = (unsigned char*)malloc(root_key_pem.size);
541 if (root_key_pem.data) {
542 memcpy(root_key_pem.data, bdata, root_key_pem.size);
543 }
544 BIO_free(membp);
545 membp = NULL;
546 }
547 membp = BIO_new(BIO_s_mem());
548 if (PEM_write_bio_X509(membp, host_cert) > 0) {
549 host_cert_pem.size = BIO_get_mem_data(membp, &bdata);
550 host_cert_pem.data = (unsigned char*)malloc(host_cert_pem.size);
551 if (host_cert_pem.data) {
552 memcpy(host_cert_pem.data, bdata, host_cert_pem.size);
553 }
554 BIO_free(membp);
555 membp = NULL;
556 }
557 membp = BIO_new(BIO_s_mem());
558 if (PEM_write_bio_PrivateKey(membp, host_pkey, NULL, NULL, 0, 0, NULL) > 0) {
559 host_key_pem.size = BIO_get_mem_data(membp, &bdata);
560 host_key_pem.data = (unsigned char*)malloc(host_key_pem.size);
561 if (host_key_pem.data) {
562 memcpy(host_key_pem.data, bdata, host_key_pem.size);
563 }
564 BIO_free(membp);
565 membp = NULL;
566 }
567 }
568
569 EVP_PKEY *pubkey = NULL;
570 {
571 BIO *membp = BIO_new_mem_buf(public_key.data, public_key.size);
572#if OPENSSL_VERSION_NUMBER >= 0x30000000L
573 if (!PEM_read_bio_PUBKEY(membp, &pubkey, NULL, NULL)) {
574 debug_info("WARNING: Could not read public key");
575 }
576#else
577 RSA *rsa_pubkey = NULL;
578 if (!PEM_read_bio_RSAPublicKey(membp, &rsa_pubkey, NULL, NULL)) {
579 debug_info("WARNING: Could not read public key");
580 } else {
581 pubkey = EVP_PKEY_new();
582 EVP_PKEY_assign_RSA(pubkey, rsa_pubkey);
583 }
584#endif
585 BIO_free(membp);
586 }
587
588 X509* dev_cert = X509_new();
589 if (pubkey && dev_cert) {
590 /* generate device certificate */
591 ASN1_INTEGER* sn = ASN1_INTEGER_new();
592 ASN1_INTEGER_set(sn, 0);
593 X509_set_serialNumber(dev_cert, sn);
594 ASN1_INTEGER_free(sn);
595 X509_set_version(dev_cert, 2);
596
597 X509_add_ext_helper(dev_cert, NID_basic_constraints, (char*)"critical,CA:FALSE");
598
599 ASN1_TIME* asn1time = ASN1_TIME_new();
600 ASN1_TIME_set(asn1time, time(NULL));
601 X509_set1_notBefore(dev_cert, asn1time);
602 ASN1_TIME_set(asn1time, time(NULL) + (60 * 60 * 24 * 365 * 10));
603 X509_set1_notAfter(dev_cert, asn1time);
604 ASN1_TIME_free(asn1time);
605
606 X509_set_pubkey(dev_cert, pubkey);
607
608 X509_add_ext_helper(dev_cert, NID_subject_key_identifier, (char*)"hash");
609 X509_add_ext_helper(dev_cert, NID_key_usage, (char*)"critical,digitalSignature,keyEncipherment");
610
611 /* sign device certificate with root private key */
612 if (X509_sign(dev_cert, root_pkey, EVP_sha1())) {
613 /* if signing succeeded, export in PEM format */
614 BIO* membp = BIO_new(BIO_s_mem());
615 if (PEM_write_bio_X509(membp, dev_cert) > 0) {
616 char *bdata = NULL;
617 dev_cert_pem.size = BIO_get_mem_data(membp, &bdata);
618 dev_cert_pem.data = (unsigned char*)malloc(dev_cert_pem.size);
619 if (dev_cert_pem.data) {
620 memcpy(dev_cert_pem.data, bdata, dev_cert_pem.size);
621 }
622 BIO_free(membp);
623 membp = NULL;
624 }
625 } else {
626 debug_info("ERROR: Signing device certificate with root private key failed!");
627 }
628 }
629
630 X509_free(dev_cert);
631
632 EVP_PKEY_free(pubkey);
633 EVP_PKEY_free(root_pkey);
634 EVP_PKEY_free(host_pkey);
635
636 X509_free(host_cert);
637 X509_free(root_cert);
638#elif defined(HAVE_GNUTLS)
639 gnutls_x509_privkey_t root_privkey;
640 gnutls_x509_crt_t root_cert;
641 gnutls_x509_privkey_t host_privkey;
642 gnutls_x509_crt_t host_cert;
643
644 /* use less secure random to speed up key generation */
645 gcry_control(GCRYCTL_ENABLE_QUICK_RANDOM);
646
647 gnutls_x509_privkey_init(&root_privkey);
648 gnutls_x509_privkey_init(&host_privkey);
649
650 gnutls_x509_crt_init(&root_cert);
651 gnutls_x509_crt_init(&host_cert);
652
653 /* generate root key */
654 gnutls_x509_privkey_generate(root_privkey, GNUTLS_PK_RSA, 2048, 0);
655 gnutls_x509_privkey_generate(host_privkey, GNUTLS_PK_RSA, 2048, 0);
656
657 /* generate certificates */
658 gnutls_x509_crt_set_key(root_cert, root_privkey);
659 gnutls_x509_crt_set_serial(root_cert, "\x01", 1);
660 gnutls_x509_crt_set_version(root_cert, 3);
661 gnutls_x509_crt_set_ca_status(root_cert, 1);
662 gnutls_x509_crt_set_activation_time(root_cert, time(NULL));
663 gnutls_x509_crt_set_expiration_time(root_cert, time(NULL) + (60 * 60 * 24 * 365 * 10));
664 gnutls_x509_crt_sign2(root_cert, root_cert, root_privkey, GNUTLS_DIG_SHA1, 0);
665
666 gnutls_x509_crt_set_key(host_cert, host_privkey);
667 gnutls_x509_crt_set_serial(host_cert, "\x01", 1);
668 gnutls_x509_crt_set_version(host_cert, 3);
669 gnutls_x509_crt_set_ca_status(host_cert, 0);
670 gnutls_x509_crt_set_key_usage(host_cert, GNUTLS_KEY_KEY_ENCIPHERMENT | GNUTLS_KEY_DIGITAL_SIGNATURE);
671 gnutls_x509_crt_set_activation_time(host_cert, time(NULL));
672 gnutls_x509_crt_set_expiration_time(host_cert, time(NULL) + (60 * 60 * 24 * 365 * 10));
673 gnutls_x509_crt_sign2(host_cert, root_cert, root_privkey, GNUTLS_DIG_SHA1, 0);
674
675 /* export to PEM format */
676 size_t root_key_export_size = 0;
677 size_t host_key_export_size = 0;
678
679 gnutls_x509_privkey_export(root_privkey, GNUTLS_X509_FMT_PEM, NULL, &root_key_export_size);
680 gnutls_x509_privkey_export(host_privkey, GNUTLS_X509_FMT_PEM, NULL, &host_key_export_size);
681
682 root_key_pem.data = gnutls_malloc(root_key_export_size);
683 host_key_pem.data = gnutls_malloc(host_key_export_size);
684
685 gnutls_x509_privkey_export(root_privkey, GNUTLS_X509_FMT_PEM, root_key_pem.data, &root_key_export_size);
686 root_key_pem.size = root_key_export_size;
687 gnutls_x509_privkey_export(host_privkey, GNUTLS_X509_FMT_PEM, host_key_pem.data, &host_key_export_size);
688 host_key_pem.size = host_key_export_size;
689
690 size_t root_cert_export_size = 0;
691 size_t host_cert_export_size = 0;
692
693 gnutls_x509_crt_export(root_cert, GNUTLS_X509_FMT_PEM, NULL, &root_cert_export_size);
694 gnutls_x509_crt_export(host_cert, GNUTLS_X509_FMT_PEM, NULL, &host_cert_export_size);
695
696 root_cert_pem.data = gnutls_malloc(root_cert_export_size);
697 host_cert_pem.data = gnutls_malloc(host_cert_export_size);
698
699 gnutls_x509_crt_export(root_cert, GNUTLS_X509_FMT_PEM, root_cert_pem.data, &root_cert_export_size);
700 root_cert_pem.size = root_cert_export_size;
701 gnutls_x509_crt_export(host_cert, GNUTLS_X509_FMT_PEM, host_cert_pem.data, &host_cert_export_size);
702 host_cert_pem.size = host_cert_export_size;
703
704 gnutls_datum_t modulus = { NULL, 0 };
705 gnutls_datum_t exponent = { NULL, 0 };
706
707 /* now decode the PEM encoded key */
708 gnutls_datum_t der_pub_key = { NULL, 0 };
709 int gnutls_error = gnutls_pem_base64_decode_alloc("RSA PUBLIC KEY", &public_key, &der_pub_key);
710 if (GNUTLS_E_SUCCESS == gnutls_error) {
711 /* initalize asn.1 parser */
712 ASN1_TYPE pkcs1 = ASN1_TYPE_EMPTY;
713 if (ASN1_SUCCESS == asn1_array2tree(pkcs1_asn1_tab, &pkcs1, NULL)) {
714
715 ASN1_TYPE asn1_pub_key = ASN1_TYPE_EMPTY;
716 asn1_create_element(pkcs1, "PKCS1.RSAPublicKey", &asn1_pub_key);
717
718 if (ASN1_SUCCESS == asn1_der_decoding(&asn1_pub_key, der_pub_key.data, der_pub_key.size, NULL)) {
719
720 /* get size to read */
721 int ret1 = asn1_read_value(asn1_pub_key, "modulus", NULL, (int*)&modulus.size);
722 int ret2 = asn1_read_value(asn1_pub_key, "publicExponent", NULL, (int*)&exponent.size);
723
724 modulus.data = gnutls_malloc(modulus.size);
725 exponent.data = gnutls_malloc(exponent.size);
726
727 ret1 = asn1_read_value(asn1_pub_key, "modulus", modulus.data, (int*)&modulus.size);
728 ret2 = asn1_read_value(asn1_pub_key, "publicExponent", exponent.data, (int*)&exponent.size);
729 if (ret1 != ASN1_SUCCESS || ret2 != ASN1_SUCCESS) {
730 gnutls_free(modulus.data);
731 modulus.data = NULL;
732 modulus.size = 0;
733 gnutls_free(exponent.data);
734 exponent.data = NULL;
735 exponent.size = 0;
736 }
737 }
738 if (asn1_pub_key)
739 asn1_delete_structure(&asn1_pub_key);
740 }
741 if (pkcs1)
742 asn1_delete_structure(&pkcs1);
743 } else {
744 debug_info("ERROR: Could not parse public key: %s", gnutls_strerror(gnutls_error));
745 }
746
747 /* generate device certificate */
748 if (modulus.data && 0 != modulus.size && exponent.data && 0 != exponent.size) {
749
750 gnutls_datum_t prime_p = { (unsigned char*)"\x00\xca\x4a\x03\x13\xdf\x9d\x7a\xfd", 9 };
751 gnutls_datum_t prime_q = { (unsigned char*)"\x00\xf2\xff\xe0\x15\xd1\x60\x37\x63", 9 };
752 gnutls_datum_t coeff = { (unsigned char*)"\x32\x07\xf1\x68\x57\xdf\x9a\xf4", 8 };
753
754 gnutls_x509_privkey_t fake_privkey;
755 gnutls_x509_crt_t dev_cert;
756
757 gnutls_x509_privkey_init(&fake_privkey);
758 gnutls_x509_crt_init(&dev_cert);
759
760 gnutls_error = gnutls_x509_privkey_import_rsa_raw(fake_privkey, &modulus, &exponent, &exponent, &prime_p, &prime_q, &coeff);
761 if (GNUTLS_E_SUCCESS == gnutls_error) {
762 /* now generate device certificate */
763 gnutls_x509_crt_set_key(dev_cert, fake_privkey);
764 gnutls_x509_crt_set_serial(dev_cert, "\x01", 1);
765 gnutls_x509_crt_set_version(dev_cert, 3);
766 gnutls_x509_crt_set_ca_status(dev_cert, 0);
767 gnutls_x509_crt_set_activation_time(dev_cert, time(NULL));
768 gnutls_x509_crt_set_expiration_time(dev_cert, time(NULL) + (60 * 60 * 24 * 365 * 10));
769
770 /* use custom hash generation for compatibility with the "Apple ecosystem" */
771 const gnutls_digest_algorithm_t dig_sha1 = GNUTLS_DIG_SHA1;
772 size_t hash_size = gnutls_hash_get_len(dig_sha1);
773 unsigned char hash[hash_size];
774 if (gnutls_hash_fast(dig_sha1, der_pub_key.data, der_pub_key.size, (unsigned char*)&hash) < 0) {
775 debug_info("ERROR: Failed to generate SHA1 for public key");
776 } else {
777 gnutls_x509_crt_set_subject_key_id(dev_cert, hash, hash_size);
778 }
779
780 gnutls_x509_crt_set_key_usage(dev_cert, GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT);
781 gnutls_error = gnutls_x509_crt_sign2(dev_cert, root_cert, root_privkey, GNUTLS_DIG_SHA1, 0);
782 if (GNUTLS_E_SUCCESS == gnutls_error) {
783 /* if everything went well, export in PEM format */
784 size_t export_size = 0;
785 gnutls_x509_crt_export(dev_cert, GNUTLS_X509_FMT_PEM, NULL, &export_size);
786 dev_cert_pem.data = gnutls_malloc(export_size);
787 gnutls_x509_crt_export(dev_cert, GNUTLS_X509_FMT_PEM, dev_cert_pem.data, &export_size);
788 dev_cert_pem.size = export_size;
789 } else {
790 debug_info("ERROR: Signing device certificate with root private key failed: %s", gnutls_strerror(gnutls_error));
791 }
792 } else {
793 debug_info("ERROR: Failed to import RSA key data: %s", gnutls_strerror(gnutls_error));
794 }
795 gnutls_x509_crt_deinit(dev_cert);
796 gnutls_x509_privkey_deinit(fake_privkey);
797 }
798
799 gnutls_x509_crt_deinit(root_cert);
800 gnutls_x509_crt_deinit(host_cert);
801 gnutls_x509_privkey_deinit(root_privkey);
802 gnutls_x509_privkey_deinit(host_privkey);
803
804 gnutls_free(modulus.data);
805 gnutls_free(exponent.data);
806
807 gnutls_free(der_pub_key.data);
808#elif defined(HAVE_MBEDTLS)
809 time_t now = time(NULL);
810 struct tm* timestamp = gmtime(&now);
811 char notbefore[16];
812 strftime(notbefore, sizeof(notbefore), "%Y%m%d%H%M%S", timestamp);
813 time_t then = now + 60 * 60 * 24 * 365 * 10;
814 char notafter[16];
815 timestamp = gmtime(&then);
816 strftime(notafter, sizeof(notafter), "%Y%m%d%H%M%S", timestamp);
817
818 mbedtls_mpi sn;
819 mbedtls_mpi_init(&sn);
820 mbedtls_mpi_lset(&sn, 1); /* 0 doesn't work, so we have to use 1 (like GnuTLS) */
821
822 mbedtls_ctr_drbg_context ctr_drbg;
823 mbedtls_ctr_drbg_init(&ctr_drbg);
824
825 mbedtls_pk_context root_pkey;
826 mbedtls_pk_init(&root_pkey);
827
828 mbedtls_pk_context host_pkey;
829 mbedtls_pk_init(&host_pkey);
830
831 mbedtls_pk_context dev_public_key;
832 mbedtls_pk_init(&dev_public_key);
833
834 mbedtls_entropy_context entropy;
835 mbedtls_entropy_init(&entropy);
836
837 mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy, (const unsigned char *)"limd", 4);
838
839 /* ----- root key & cert ----- */
840 ret = mbedtls_pk_setup(&root_pkey, mbedtls_pk_info_from_type(MBEDTLS_PK_RSA));
841 if (ret != 0) {
842 debug_info("mbedtls_pk_setup returned -0x%04x", -ret);
843 goto cleanup;
844 }
845
846 ret = mbedtls_rsa_gen_key(mbedtls_pk_rsa(root_pkey), mbedtls_ctr_drbg_random, &ctr_drbg, 2048, 65537);
847 if (ret != 0) {
848 debug_info("mbedtls_rsa_gen_key returned -0x%04x", -ret);
849 goto cleanup;
850 }
851
852 mbedtls_x509write_cert cert;
853 mbedtls_x509write_crt_init(&cert);
854
855 /* set serial number */
856 mbedtls_x509write_crt_set_serial(&cert, &sn);
857
858 /* set version */
859 mbedtls_x509write_crt_set_version(&cert, 2);
860
861 /* set x509v3 basic constraints */
862 _mbedtls_x509write_crt_set_basic_constraints_critical(&cert, 1, -1);
863
864 /* use root public key for root cert */
865 mbedtls_x509write_crt_set_subject_key(&cert, &root_pkey);
866
867 /* set x509v3 subject key identifier */
868 mbedtls_x509write_crt_set_subject_key_identifier(&cert);
869
870 /* set key validity */
871 mbedtls_x509write_crt_set_validity(&cert, notbefore, notafter);
872
873 /* sign root cert with root private key */
874 mbedtls_x509write_crt_set_issuer_key(&cert, &root_pkey);
875 mbedtls_x509write_crt_set_md_alg(&cert, MBEDTLS_MD_SHA1);
876
877 unsigned char outbuf[16384];
878
879 /* write root private key */
880 mbedtls_pk_write_key_pem(&root_pkey, outbuf, sizeof(outbuf));
881 root_key_pem.size = strlen((const char*)outbuf);
882 root_key_pem.data = malloc(root_key_pem.size+1);
883 memcpy(root_key_pem.data, outbuf, root_key_pem.size);
884 root_key_pem.data[root_key_pem.size] = '\0';
885
886 /* write root certificate */
887 mbedtls_x509write_crt_pem(&cert, outbuf, sizeof(outbuf), mbedtls_ctr_drbg_random, &ctr_drbg);
888 root_cert_pem.size = strlen((const char*)outbuf);
889 root_cert_pem.data = malloc(root_cert_pem.size+1);
890 memcpy(root_cert_pem.data, outbuf, root_cert_pem.size);
891 root_cert_pem.data[root_cert_pem.size] = '\0';
892
893 mbedtls_x509write_crt_free(&cert);
894
895
896 /* ----- host key & cert ----- */
897 ret = mbedtls_pk_setup(&host_pkey, mbedtls_pk_info_from_type(MBEDTLS_PK_RSA));
898 if (ret != 0) {
899 debug_info("mbedtls_pk_setup returned -0x%04x", -ret);
900 goto cleanup;
901 }
902
903 ret = mbedtls_rsa_gen_key(mbedtls_pk_rsa(host_pkey), mbedtls_ctr_drbg_random, &ctr_drbg, 2048, 65537);
904 if (ret != 0) {
905 debug_info("mbedtls_rsa_gen_key returned -0x%04x", -ret);
906 goto cleanup;
907 }
908
909 mbedtls_x509write_crt_init(&cert);
910
911 /* set serial number */
912 mbedtls_x509write_crt_set_serial(&cert, &sn);
913
914 /* set version */
915 mbedtls_x509write_crt_set_version(&cert, 2);
916
917 /* set x509v3 basic constraints */
918 _mbedtls_x509write_crt_set_basic_constraints_critical(&cert, 0, -1);
919
920 /* use host public key for host cert */
921 mbedtls_x509write_crt_set_subject_key(&cert, &host_pkey);
922
923 /* set x509v3 subject key identifier */
924 mbedtls_x509write_crt_set_subject_key_identifier(&cert);
925
926 /* set x509v3 key usage */
927 mbedtls_x509write_crt_set_key_usage(&cert, MBEDTLS_X509_KU_DIGITAL_SIGNATURE | MBEDTLS_X509_KU_KEY_ENCIPHERMENT);
928
929 /* set key validity */
930 mbedtls_x509write_crt_set_validity(&cert, notbefore, notafter);
931
932 /* sign host cert with root private key */
933 mbedtls_x509write_crt_set_issuer_key(&cert, &root_pkey);
934 mbedtls_x509write_crt_set_md_alg(&cert, MBEDTLS_MD_SHA1);
935
936 /* write host private key */
937 mbedtls_pk_write_key_pem(&host_pkey, outbuf, sizeof(outbuf));
938 host_key_pem.size = strlen((const char*)outbuf);
939 host_key_pem.data = malloc(host_key_pem.size+1);
940 memcpy(host_key_pem.data, outbuf, host_key_pem.size);
941 host_key_pem.data[host_key_pem.size] = '\0';
942
943 /* write host certificate */
944 mbedtls_x509write_crt_pem(&cert, outbuf, sizeof(outbuf), mbedtls_ctr_drbg_random, &ctr_drbg);
945 host_cert_pem.size = strlen((const char*)outbuf);
946 host_cert_pem.data = malloc(host_cert_pem.size+1);
947 memcpy(host_cert_pem.data, outbuf, host_cert_pem.size);
948 host_cert_pem.data[host_cert_pem.size] = '\0';
949
950 mbedtls_x509write_crt_free(&cert);
951
952
953 /* ----- device certificate ----- */
954 unsigned char* pubkey_data = malloc(public_key.size+1);
955 if (!pubkey_data) {
956 debug_info("malloc() failed\n");
957 goto cleanup;
958 }
959 memcpy(pubkey_data, public_key.data, public_key.size);
960 pubkey_data[public_key.size] = '\0';
961
962 int pr = mbedtls_pk_parse_public_key(&dev_public_key, pubkey_data, public_key.size+1);
963 free(pubkey_data);
964 if (pr != 0) {
965 debug_info("Failed to read device public key: -0x%x\n", -pr);
966 goto cleanup;
967 }
968
969 mbedtls_x509write_crt_init(&cert);
970
971 /* set serial number */
972 mbedtls_x509write_crt_set_serial(&cert, &sn);
973
974 /* set version */
975 mbedtls_x509write_crt_set_version(&cert, 2);
976
977 /* set x509v3 basic constraints */
978 _mbedtls_x509write_crt_set_basic_constraints_critical(&cert, 0, -1);
979
980 /* use root public key for dev cert subject key */
981 mbedtls_x509write_crt_set_subject_key(&cert, &dev_public_key);
982
983 /* set x509v3 subject key identifier */
984 mbedtls_x509write_crt_set_subject_key_identifier(&cert);
985
986 /* set x509v3 key usage */
987 mbedtls_x509write_crt_set_key_usage(&cert, MBEDTLS_X509_KU_DIGITAL_SIGNATURE | MBEDTLS_X509_KU_KEY_ENCIPHERMENT);
988
989 /* set key validity */
990 mbedtls_x509write_crt_set_validity(&cert, notbefore, notafter);
991
992 /* sign device certificate with root private key */
993 mbedtls_x509write_crt_set_issuer_key(&cert, &root_pkey);
994 mbedtls_x509write_crt_set_md_alg(&cert, MBEDTLS_MD_SHA1);
995
996 /* write device certificate */
997 mbedtls_x509write_crt_pem(&cert, outbuf, sizeof(outbuf), mbedtls_ctr_drbg_random, &ctr_drbg);
998 dev_cert_pem.size = strlen((const char*)outbuf);
999 dev_cert_pem.data = malloc(dev_cert_pem.size+1);
1000 memcpy(dev_cert_pem.data, outbuf, dev_cert_pem.size);
1001 dev_cert_pem.data[dev_cert_pem.size] = '\0';
1002
1003 mbedtls_x509write_crt_free(&cert);
1004
1005 /* cleanup */
1006cleanup:
1007 mbedtls_mpi_free(&sn);
1008 mbedtls_pk_free(&dev_public_key);
1009 mbedtls_entropy_free(&entropy);
1010 mbedtls_pk_free(&host_pkey);
1011 mbedtls_pk_free(&root_pkey);
1012 mbedtls_ctr_drbg_free(&ctr_drbg);
1013#endif
1014
1015 /* make sure that we have all we need */
1016 if (root_cert_pem.data && 0 != root_cert_pem.size
1017 && root_key_pem.data && 0 != root_key_pem.size
1018 && host_cert_pem.data && 0 != host_cert_pem.size
1019 && host_key_pem.data && 0 != host_key_pem.size
1020 && dev_cert_pem.data && 0 != dev_cert_pem.size) {
1021 /* now set keys and certificates */
1022 pair_record_set_item_from_key_data(pair_record, USERPREF_DEVICE_CERTIFICATE_KEY, &dev_cert_pem);
1023 pair_record_set_item_from_key_data(pair_record, USERPREF_HOST_PRIVATE_KEY_KEY, &host_key_pem);
1024 pair_record_set_item_from_key_data(pair_record, USERPREF_HOST_CERTIFICATE_KEY, &host_cert_pem);
1025 pair_record_set_item_from_key_data(pair_record, USERPREF_ROOT_PRIVATE_KEY_KEY, &root_key_pem);
1026 pair_record_set_item_from_key_data(pair_record, USERPREF_ROOT_CERTIFICATE_KEY, &root_cert_pem);
1027 ret = USERPREF_E_SUCCESS;
1028 }
1029
1030 free(dev_cert_pem.data);
1031 free(root_key_pem.data);
1032 free(root_cert_pem.data);
1033 free(host_key_pem.data);
1034 free(host_cert_pem.data);
1035
1036 return ret;
1037}
1038
1039/**
1040 * Private function which import the given key into a gnutls structure.
1041 *
1042 * @param name The name of the private key to import.
1043 * @param key the gnutls key structure.
1044 *
1045 * @return 1 if the key was successfully imported.
1046 */
1047#if defined(HAVE_OPENSSL) || defined(HAVE_MBEDTLS)
1048userpref_error_t pair_record_import_key_with_name(plist_t pair_record, const char* name, key_data_t* key)
1049#elif defined(HAVE_GNUTLS)
1050userpref_error_t pair_record_import_key_with_name(plist_t pair_record, const char* name, gnutls_x509_privkey_t key)
1051#endif
1052{
1053#if defined(HAVE_OPENSSL) || defined(HAVE_MBEDTLS)
1054 if (!key)
1055 return USERPREF_E_SUCCESS;
1056#endif
1057 userpref_error_t ret = USERPREF_E_INVALID_CONF;
1058
1059#if defined(HAVE_OPENSSL) || defined(HAVE_MBEDTLS)
1060 ret = pair_record_get_item_as_key_data(pair_record, name, key);
1061#elif defined(HAVE_GNUTLS)
1062 key_data_t pem = { NULL, 0 };
1063 ret = pair_record_get_item_as_key_data(pair_record, name, &pem);
1064 if (ret == USERPREF_E_SUCCESS && GNUTLS_E_SUCCESS == gnutls_x509_privkey_import(key, &pem, GNUTLS_X509_FMT_PEM))
1065 ret = USERPREF_E_SUCCESS;
1066 else
1067 ret = USERPREF_E_SSL_ERROR;
1068
1069 if (pem.data)
1070 free(pem.data);
1071#endif
1072 return ret;
1073}
1074
1075/**
1076 * Private function which import the given certificate into a gnutls structure.
1077 *
1078 * @param name The name of the certificate to import.
1079 * @param cert the gnutls certificate structure.
1080 *
1081 * @return IDEVICE_E_SUCCESS if the certificate was successfully imported.
1082 */
1083#if defined(HAVE_OPENSSL) || defined(HAVE_MBEDTLS)
1084userpref_error_t pair_record_import_crt_with_name(plist_t pair_record, const char* name, key_data_t* cert)
1085#else
1086userpref_error_t pair_record_import_crt_with_name(plist_t pair_record, const char* name, gnutls_x509_crt_t cert)
1087#endif
1088{
1089#if defined(HAVE_OPENSSL) || defined(HAVE_MBEDTLS)
1090 if (!cert)
1091 return USERPREF_E_SUCCESS;
1092#endif
1093 userpref_error_t ret = USERPREF_E_INVALID_CONF;
1094
1095#if defined(HAVE_OPENSSL) || defined(HAVE_MBEDTLS)
1096 ret = pair_record_get_item_as_key_data(pair_record, name, cert);
1097#elif defined(HAVE_GNUTLS)
1098 key_data_t pem = { NULL, 0 };
1099 ret = pair_record_get_item_as_key_data(pair_record, name, &pem);
1100 if (ret == USERPREF_E_SUCCESS && GNUTLS_E_SUCCESS == gnutls_x509_crt_import(cert, &pem, GNUTLS_X509_FMT_PEM))
1101 ret = USERPREF_E_SUCCESS;
1102 else
1103 ret = USERPREF_E_SSL_ERROR;
1104
1105 if (pem.data)
1106 free(pem.data);
1107#endif
1108 return ret;
1109}
1110
1111userpref_error_t pair_record_get_host_id(plist_t pair_record, char** host_id)
1112{
1113 plist_t node = plist_dict_get_item(pair_record, USERPREF_HOST_ID_KEY);
1114
1115 if (node && plist_get_node_type(node) == PLIST_STRING) {
1116 plist_get_string_val(node, host_id);
1117 }
1118
1119 return USERPREF_E_SUCCESS;
1120}
1121
1122userpref_error_t pair_record_set_host_id(plist_t pair_record, const char* host_id)
1123{
1124 plist_dict_set_item(pair_record, USERPREF_HOST_ID_KEY, plist_new_string(host_id));
1125
1126 return USERPREF_E_SUCCESS;
1127}
1128
1129userpref_error_t pair_record_get_item_as_key_data(plist_t pair_record, const char* name, key_data_t *value)
1130{
1131 if (!pair_record || !value)
1132 return USERPREF_E_INVALID_ARG;
1133
1134 userpref_error_t ret = USERPREF_E_SUCCESS;
1135 char* buffer = NULL;
1136 uint64_t length = 0;
1137
1138 plist_t node = plist_dict_get_item(pair_record, name);
1139
1140 if (node && plist_get_node_type(node) == PLIST_DATA) {
1141 plist_get_data_val(node, &buffer, &length);
1142 value->data = (unsigned char*)malloc(length+1);
1143 memcpy(value->data, buffer, length);
1144 value->data[length] = '\0';
1145 value->size = length+1;
1146 free(buffer);
1147 buffer = NULL;
1148 } else {
1149 ret = USERPREF_E_INVALID_CONF;
1150 }
1151
1152 if (buffer)
1153 free(buffer);
1154
1155 return ret;
1156}
1157
1158userpref_error_t pair_record_set_item_from_key_data(plist_t pair_record, const char* name, key_data_t *value)
1159{
1160 userpref_error_t ret = USERPREF_E_SUCCESS;
1161
1162 if (!pair_record || !value) {
1163 return USERPREF_E_INVALID_ARG;
1164 }
1165
1166 /* set new item */
1167 plist_dict_set_item(pair_record, name, plist_new_data((char*)value->data, value->size));
1168
1169 return ret;
1170}
1171
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