Merge "Clean up key handling in adb." (b8598304) · Commits · e / os / android_system_core

adb/adb.cpp

+3 −11

Original line number	Diff line number	Diff line
		@@ -354,21 +354,13 @@ void handle_packet(apacket p, atransport t)
		case A_AUTH:
		if (p->msg.arg0 == ADB_AUTH_TOKEN) {
		t->connection_state = kCsUnauthorized;
		t->key = adb_auth_nextkey(t->key);
		if (t->key) {
		send_auth_response(p->data, p->msg.data_length, t);
		} else {
		/* No more private keys to try, send the public key */
		send_auth_publickey(t);
		}
		} else if (p->msg.arg0 == ADB_AUTH_SIGNATURE) {
		if (adb_auth_verify(t->token, sizeof(t->token),
		p->data, p->msg.data_length)) {
		if (adb_auth_verify(t->token, sizeof(t->token), p->data, p->msg.data_length)) {
		adb_auth_verified(t);
		t->failed_auth_attempts = 0;
		} else {
		if (t->failed_auth_attempts++ > 10)
		adb_sleep_ms(1000);
		if (t->failed_auth_attempts++ > 10) adb_sleep_ms(1000);
		send_auth_request(t);
		}
		} else if (p->msg.arg0 == ADB_AUTH_RSAPUBLICKEY) {

adb/adb_auth.cpp

+39 −34

Original line number	Diff line number	Diff line
		@@ -16,8 +16,9 @@

		#define TRACE_TAG ADB

		#include "sysdeps.h"
		#include "adb.h"
		#include "adb_auth.h"
		#include "transport.h"

		#include <errno.h>
		#include <stdio.h>
		@@ -25,53 +26,28 @@
		#include <sys/types.h>
		#include <unistd.h>

		#include "adb.h"
		#include "transport.h"

		bool auth_required = true;

		void send_auth_request(atransport *t)
		{
		D("Calling send_auth_request");
		apacket *p;
		int ret;
		LOG(INFO) << "Calling send_auth_request...";

		ret = adb_auth_generate_token(t->token, sizeof(t->token));
		if (ret != sizeof(t->token)) {
		D("Error generating token ret=%d", ret);
		if (!adb_auth_generate_token(t->token, sizeof(t->token))) {
		PLOG(ERROR) << "Error generating token";
		return;
		}

		p = get_apacket();
		memcpy(p->data, t->token, ret);
		apacket* p = get_apacket();
		memcpy(p->data, t->token, sizeof(t->token));
		p->msg.command = A_AUTH;
		p->msg.arg0 = ADB_AUTH_TOKEN;
		p->msg.data_length = ret;
		p->msg.data_length = sizeof(t->token);
		send_packet(p, t);
		}

		void send_auth_response(uint8_t token, size_t token_size, atransport t)
		{
		D("Calling send_auth_response");
		apacket *p = get_apacket();
		int ret;

		ret = adb_auth_sign(t->key, token, token_size, p->data);
		if (!ret) {
		D("Error signing the token");
		put_apacket(p);
		return;
		}

		p->msg.command = A_AUTH;
		p->msg.arg0 = ADB_AUTH_SIGNATURE;
		p->msg.data_length = ret;
		send_packet(p, t);
		}
		static void send_auth_publickey(atransport* t) {
		LOG(INFO) << "Calling send_auth_publickey";

		void send_auth_publickey(atransport *t)
		{
		D("Calling send_auth_publickey");
		std::string key = adb_auth_get_userkey();
		if (key.empty()) {
		D("Failed to get user public key");
		@@ -92,6 +68,35 @@ void send_auth_publickey(atransport *t)
		send_packet(p, t);
		}

		void send_auth_response(uint8_t* token, size_t token_size, atransport* t) {
		RSA* key = t->NextKey();
		if (key == nullptr) {
		// No more private keys to try, send the public key.
		send_auth_publickey(t);
		return;
		}

		LOG(INFO) << "Calling send_auth_response";
		apacket* p = get_apacket();

		int ret = adb_auth_sign(key, token, token_size, p->data);

		// Stop sharing this key.
		RSA_free(key);
		key = nullptr;

		if (!ret) {
		D("Error signing the token");
		put_apacket(p);
		return;
		}

		p->msg.command = A_AUTH;
		p->msg.arg0 = ADB_AUTH_SIGNATURE;
		p->msg.data_length = ret;
		send_packet(p, t);
		}

		void adb_auth_verified(atransport *t)
		{
		handle_online(t);

adb/adb_auth.h

+15 −23

Original line number	Diff line number	Diff line
		@@ -19,6 +19,10 @@

		#include "adb.h"

		#include <deque>

		#include <openssl/rsa.h>

		extern bool auth_required;

		int adb_auth_keygen(const char* filename);
		@@ -26,7 +30,6 @@ void adb_auth_verified(atransport *t);

		void send_auth_request(atransport *t);
		void send_auth_response(uint8_t token, size_t token_size, atransport t);
		void send_auth_publickey(atransport *t);

		/* AUTH packets first argument */
		/* Request */
		@@ -37,36 +40,25 @@ void send_auth_publickey(atransport *t);

		#if ADB_HOST

		void adb_auth_init(void);
		int adb_auth_sign(void key, const unsigned char token, size_t token_size,
		unsigned char* sig);
		void adb_auth_nextkey(void current);
		void adb_auth_init();
		int adb_auth_sign(RSA* key, const unsigned char* token, size_t token_size, unsigned char* sig);
		std::string adb_auth_get_userkey();
		std::deque<RSA*> adb_auth_get_private_keys();

		static inline int adb_auth_generate_token(void *token, size_t token_size) {
		return 0;
		}
		static inline int adb_auth_verify(void *token, size_t token_size,
		void *sig, int siglen) {
		return 0;
		}
		static inline void adb_auth_confirm_key(unsigned char *data, size_t len,
		atransport *t) {}
		static inline bool adb_auth_generate_token(void*, size_t) { abort(); }
		static inline bool adb_auth_verify(void, size_t, void, int) { abort(); }
		static inline void adb_auth_confirm_key(unsigned char, size_t, atransport) { abort(); }

		#else // !ADB_HOST

		static inline int adb_auth_sign(void* key, const unsigned char* token,
		size_t token_size, unsigned char* sig) {
		return 0;
		}
		static inline void adb_auth_nextkey(void current) { return NULL; }
		static inline std::string adb_auth_get_userkey() { return ""; }
		static inline int adb_auth_sign(void, const unsigned char, size_t, unsigned char*) { abort(); }
		static inline std::string adb_auth_get_userkey() { abort(); }
		static inline std::deque<RSA*> adb_auth_get_private_keys() { abort(); }

		void adbd_auth_init(void);
		void adbd_cloexec_auth_socket();
		int adb_auth_generate_token(void *token, size_t token_size);
		int adb_auth_verify(uint8_t* token, size_t token_size,
		uint8_t* sig, int siglen);
		bool adb_auth_generate_token(void* token, size_t token_size);
		bool adb_auth_verify(uint8_t* token, size_t token_size, uint8_t* sig, int sig_len);
		void adb_auth_confirm_key(unsigned char data, size_t len, atransport t);

		#endif // ADB_HOST

adb/adb_auth_client.cpp

+69 −153

Original line number	Diff line number	Diff line
		@@ -16,37 +16,25 @@

		#define TRACE_TAG AUTH

		#include "sysdeps.h"
		#include "adb.h"
		#include "adb_auth.h"
		#include "fdevent.h"
		#include "sysdeps.h"
		#include "transport.h"

		#include <resolv.h>
		#include <stdio.h>
		#include <string.h>

		#include <memory>

		#include <android-base/file.h>
		#include <android-base/strings.h>
		#include <crypto_utils/android_pubkey.h>
		#include <openssl/obj_mac.h>
		#include <openssl/rsa.h>
		#include <openssl/sha.h>

		#include <crypto_utils/android_pubkey.h>

		#include "cutils/list.h"
		#include "cutils/sockets.h"

		#include "adb.h"
		#include "fdevent.h"
		#include "transport.h"

		struct adb_public_key {
		struct listnode node;
		RSA* key;
		};

		static const char *key_paths[] = {
		"/adb_keys",
		"/data/misc/adb/adb_keys",
		NULL
		};

		static fdevent listener_fde;
		static fdevent framework_fde;
		static int framework_fd = -1;
		@@ -56,135 +44,71 @@ static struct adisconnect usb_disconnect = { usb_disconnected, nullptr};
		static atransport* usb_transport;
		static bool needs_retry = false;

		static void read_keys(const char file, struct listnode list)
		{
		FILE *f;
		char buf[MAX_PAYLOAD_V1];
		char *sep;
		int ret;
		bool adb_auth_verify(uint8_t* token, size_t token_size, uint8_t* sig, int sig_len) {
		static constexpr const char* key_paths[] = { "/adb_keys", "/data/misc/adb/adb_keys", nullptr };

		f = fopen(file, "re");
		if (!f) {
		D("Can't open '%s'", file);
		return;
		}
		for (const auto& path : key_paths) {
		if (access(path, R_OK) == 0) {
		LOG(INFO) << "Loading keys from " << path;

		while (fgets(buf, sizeof(buf), f)) {
		auto key = reinterpret_cast<adb_public_key*>(
		calloc(1, sizeof(adb_public_key)));
		if (key == nullptr) {
		D("Can't malloc key");
		break;
		std::string content;
		if (!android::base::ReadFileToString(path, &content)) {
		PLOG(ERROR) << "Couldn't read " << path;
		continue;
		}

		sep = strpbrk(buf, " \t");
		if (sep)
		*sep = '\0';
		for (const auto& line : android::base::Split(content, "\n")) {
		// TODO: do we really have to support both ' ' and '\t'?
		char* sep = strpbrk(const_cast<char*>(line.c_str()), " \t");
		if (sep) *sep = '\0';

		// b64_pton requires one additional byte in the target buffer for
		// decoding to succeed. See http://b/28035006 for details.
		uint8_t keybuf[ANDROID_PUBKEY_ENCODED_SIZE + 1];
		ret = __b64_pton(buf, keybuf, sizeof(keybuf));
		if (ret != ANDROID_PUBKEY_ENCODED_SIZE) {
		D("%s: Invalid base64 data ret=%d", file, ret);
		free(key);
		if (__b64_pton(line.c_str(), keybuf, sizeof(keybuf)) != ANDROID_PUBKEY_ENCODED_SIZE) {
		LOG(ERROR) << "Invalid base64 key " << line.c_str() << " in " << path;
		continue;
		}

		if (!android_pubkey_decode(keybuf, ret, &key->key)) {
		D("%s: Failed to parse key", file);
		free(key);
		RSA* key = nullptr;
		if (!android_pubkey_decode(keybuf, ANDROID_PUBKEY_ENCODED_SIZE, &key)) {
		LOG(ERROR) << "Failed to parse key " << line.c_str() << " in " << path;
		continue;
		}

		list_add_tail(list, &key->node);
		}

		fclose(f);
		}

		static void free_keys(struct listnode *list)
		{
		struct listnode *item;

		while (!list_empty(list)) {
		item = list_head(list);
		list_remove(item);
		adb_public_key* key = node_to_item(item, struct adb_public_key, node);
		RSA_free(key->key);
		free(key);
		}
		}

		static void load_keys(struct listnode *list)
		{
		const char* path;
		const char** paths = key_paths;
		struct stat buf;

		list_init(list);

		while ((path = *paths++)) {
		if (!stat(path, &buf)) {
		D("Loading keys from '%s'", path);
		read_keys(path, list);
		bool verified = (RSA_verify(NID_sha1, token, token_size, sig, sig_len, key) == 1);
		RSA_free(key);
		if (verified) return true;
		}
		}
		}

		int adb_auth_generate_token(void *token, size_t token_size)
		{
		FILE *f;
		int ret;

		f = fopen("/dev/urandom", "re");
		if (!f)
		return 0;

		ret = fread(token, token_size, 1, f);

		fclose(f);
		return ret * token_size;
		return false;
		}

		int adb_auth_verify(uint8_t* token, size_t token_size, uint8_t* sig, int siglen)
		{
		struct listnode *item;
		struct listnode key_list;
		int ret = 0;

		load_keys(&key_list);

		list_for_each(item, &key_list) {
		adb_public_key* key = node_to_item(item, struct adb_public_key, node);
		ret = RSA_verify(NID_sha1, token, token_size, sig, siglen, key->key);
		if (ret)
		break;
		}

		free_keys(&key_list);

		return ret;
		bool adb_auth_generate_token(void* token, size_t token_size) {
		FILE* fp = fopen("/dev/urandom", "re");
		if (!fp) return false;
		bool okay = (fread(token, token_size, 1, fp) == 1);
		fclose(fp);
		return okay;
		}

		static void usb_disconnected(void* unused, atransport* t) {
		D("USB disconnect");
		LOG(INFO) << "USB disconnect";
		usb_transport = NULL;
		needs_retry = false;
		}

		static void framework_disconnected() {
		D("Framework disconnect");
		LOG(INFO) << "Framework disconnect";
		fdevent_remove(&framework_fde);
		framework_fd = -1;
		}

		static void adb_auth_event(int fd, unsigned events, void*) {
		char response[2];
		int ret;

		if (events & FDE_READ) {
		ret = unix_read(fd, response, sizeof(response));
		char response[2];
		int ret = unix_read(fd, response, sizeof(response));
		if (ret <= 0) {
		framework_disconnected();
		} else if (ret == 2 && response[0] == 'O' && response[1] == 'K') {
		@@ -195,51 +119,43 @@ static void adb_auth_event(int fd, unsigned events, void*) {
		}
		}

		void adb_auth_confirm_key(unsigned char key, size_t len, atransport t)
		{
		char msg[MAX_PAYLOAD_V1];
		int ret;

		void adb_auth_confirm_key(unsigned char* key, size_t len, atransport* t) {
		if (!usb_transport) {
		usb_transport = t;
		t->AddDisconnect(&usb_disconnect);
		}

		if (framework_fd < 0) {
		D("Client not connected");
		LOG(ERROR) << "Client not connected";
		needs_retry = true;
		return;
		}

		if (key[len - 1] != '\0') {
		D("Key must be a null-terminated string");
		LOG(ERROR) << "Key must be a null-terminated string";
		return;
		}

		ret = snprintf(msg, sizeof(msg), "PK%s", key);
		if (ret >= (signed)sizeof(msg)) {
		D("Key too long. ret=%d", ret);
		char msg[MAX_PAYLOAD_V1];
		int msg_len = snprintf(msg, sizeof(msg), "PK%s", key);
		if (msg_len >= static_cast<int>(sizeof(msg))) {
		LOG(ERROR) << "Key too long (" << msg_len << ")";
		return;
		}
		D("Sending '%s'", msg);
		LOG(DEBUG) << "Sending '" << msg << "'";

		ret = unix_write(framework_fd, msg, ret);
		if (ret < 0) {
		D("Failed to write PK, errno=%d", errno);
		if (unix_write(framework_fd, msg, msg_len) == -1) {
		PLOG(ERROR) << "Failed to write PK";
		return;
		}
		}

		static void adb_auth_listener(int fd, unsigned events, void* data) {
		sockaddr_storage addr;
		socklen_t alen;
		int s;

		alen = sizeof(addr);

		s = adb_socket_accept(fd, reinterpret_cast<sockaddr*>(&addr), &alen);
		socklen_t alen = sizeof(addr);
		int s = adb_socket_accept(fd, reinterpret_cast<sockaddr*>(&addr), &alen);
		if (s < 0) {
		D("Failed to accept: errno=%d", errno);
		PLOG(ERROR) << "Failed to accept";
		return;
		}

		@@ -261,7 +177,7 @@ static void adb_auth_listener(int fd, unsigned events, void* data) {
		void adbd_cloexec_auth_socket() {
		int fd = android_get_control_socket("adbd");
		if (fd == -1) {
		D("Failed to get adbd socket");
		PLOG(ERROR) << "Failed to get adbd socket";
		return;
		}
		fcntl(fd, F_SETFD, FD_CLOEXEC);
		@@ -270,12 +186,12 @@ void adbd_cloexec_auth_socket() {
		void adbd_auth_init(void) {
		int fd = android_get_control_socket("adbd");
		if (fd == -1) {
		D("Failed to get adbd socket");
		PLOG(ERROR) << "Failed to get adbd socket";
		return;
		}

		if (listen(fd, 4) == -1) {
		D("Failed to listen on '%d'", fd);
		PLOG(ERROR) << "Failed to listen on '" << fd << "'";
		return;
		}

adb/adb_auth_host.cpp

+87 −119

Original line number	Diff line number	Diff line
		@@ -16,23 +16,22 @@

		#define TRACE_TAG AUTH

		#include "sysdeps.h"
		#include "adb_auth.h"
		#include "adb.h"
		#include "adb_utils.h"
		#include "sysdeps.h"

		#include <stdio.h>
		#include <stdlib.h>
		#include <string.h>

		#include "adb.h"
		#include <mutex>

		#include <android-base/errors.h>
		#include <android-base/file.h>
		#include <android-base/stringprintf.h>
		#include <android-base/strings.h>
		#include <crypto_utils/android_pubkey.h>
		#include <cutils/list.h>

		#include <openssl/base64.h>
		#include <openssl/evp.h>
		#include <openssl/objects.h>
		@@ -40,18 +39,14 @@
		#include <openssl/rsa.h>
		#include <openssl/sha.h>

		#define ANDROID_PATH ".android"
		#define ADB_KEY_FILE "adbkey"

		struct adb_private_key {
		struct listnode node;
		RSA *rsa;
		};

		static struct listnode key_list;
		#include "sysdeps/mutex.h"

		static std::mutex& g_key_list_mutex = *new std::mutex;
		static std::deque<RSA>& g_key_list = new std::deque<RSA*>;

		static std::string get_user_info() {
		LOG(INFO) << "get_user_info...";

		std::string hostname;
		if (getenv("HOSTNAME")) hostname = getenv("HOSTNAME");
		#if !defined(_WIN32)
		@@ -71,6 +66,8 @@ static std::string get_user_info() {
		}

		static bool write_public_keyfile(RSA* private_key, const std::string& private_key_path) {
		LOG(INFO) << "write_public_keyfile...";

		uint8_t binary_key_data[ANDROID_PUBKEY_ENCODED_SIZE];
		if (!android_pubkey_encode(private_key, binary_key_data, sizeof(binary_key_data))) {
		LOG(ERROR) << "Failed to convert to public key";
		@@ -99,19 +96,18 @@ static bool write_public_keyfile(RSA* private_key, const std::string& private_ke
		return true;
		}

		static int generate_key(const char *file)
		{
		EVP_PKEY* pkey = EVP_PKEY_new();
		BIGNUM* exponent = BN_new();
		RSA* rsa = RSA_new();
		static int generate_key(const std::string& file) {
		LOG(INFO) << "generate_key(" << file << ")...";

		mode_t old_mask;
		FILE *f = NULL;
		int ret = 0;

		D("generate_key '%s'", file);

		EVP_PKEY* pkey = EVP_PKEY_new();
		BIGNUM* exponent = BN_new();
		RSA* rsa = RSA_new();
		if (!pkey \|\| !exponent \|\| !rsa) {
		D("Failed to allocate key");
		LOG(ERROR) << "Failed to allocate key";
		goto out;
		}

		@@ -121,9 +117,9 @@ static int generate_key(const char *file)

		old_mask = umask(077);

		f = fopen(file, "w");
		f = fopen(file.c_str(), "w");
		if (!f) {
		D("Failed to open '%s'", file);
		PLOG(ERROR) << "Failed to open " << file;
		umask(old_mask);
		goto out;
		}
		@@ -143,110 +139,110 @@ static int generate_key(const char *file)
		ret = 1;

		out:
		if (f)
		fclose(f);
		if (f) fclose(f);
		EVP_PKEY_free(pkey);
		RSA_free(rsa);
		BN_free(exponent);
		return ret;
		}

		static int read_key(const char file, struct listnode list)
		{
		D("read_key '%s'", file);
		static bool read_key(const std::string& file) {
		LOG(INFO) << "read_key '" << file << "'...";

		FILE* fp = fopen(file, "r");
		std::unique_ptr<FILE, decltype(&fclose)> fp(fopen(file.c_str(), "r"), fclose);
		if (!fp) {
		D("Failed to open '%s': %s", file, strerror(errno));
		return 0;
		PLOG(ERROR) << "Failed to open '" << file << "'";
		return false;
		}

		adb_private_key* key = new adb_private_key;
		key->rsa = RSA_new();

		if (!PEM_read_RSAPrivateKey(fp, &key->rsa, NULL, NULL)) {
		D("Failed to read key");
		fclose(fp);
		RSA_free(key->rsa);
		delete key;
		return 0;
		RSA* key = RSA_new();
		if (!PEM_read_RSAPrivateKey(fp.get(), &key, nullptr, nullptr)) {
		LOG(ERROR) << "Failed to read key";
		RSA_free(key);
		return false;
		}

		fclose(fp);
		list_add_tail(list, &key->node);
		return 1;
		g_key_list.push_back(key);
		return true;
		}

		static int get_user_keyfilepath(char *filename, size_t len)
		{
		static std::string get_user_key_path() {
		const std::string home = adb_get_homedir_path(true);
		D("home '%s'", home.c_str());
		LOG(DEBUG) << "adb_get_homedir_path returned '" << home << "'";

		const std::string android_dir =
		android::base::StringPrintf("%s%c%s", home.c_str(),
		OS_PATH_SEPARATOR, ANDROID_PATH);
		const std::string android_dir = android::base::StringPrintf("%s%c.android", home.c_str(),
		OS_PATH_SEPARATOR);

		struct stat buf;
		if (stat(android_dir.c_str(), &buf)) {
		if (adb_mkdir(android_dir.c_str(), 0750) < 0) {
		D("Cannot mkdir '%s'", android_dir.c_str());
		return -1;
		if (stat(android_dir.c_str(), &buf) == -1) {
		if (adb_mkdir(android_dir.c_str(), 0750) == -1) {
		PLOG(ERROR) << "Cannot mkdir '" << android_dir << "'";
		return "";
		}
		}

		return snprintf(filename, len, "%s%c%s",
		android_dir.c_str(), OS_PATH_SEPARATOR, ADB_KEY_FILE);
		return android_dir + OS_PATH_SEPARATOR + "adbkey";
		}

		static int get_user_key(struct listnode *list)
		{
		struct stat buf;
		char path[PATH_MAX];
		int ret;

		ret = get_user_keyfilepath(path, sizeof(path));
		if (ret < 0 \|\| ret >= (signed)sizeof(path)) {
		D("Error getting user key filename");
		return 0;
		static bool get_user_key() {
		std::string path = get_user_key_path();
		if (path.empty()) {
		PLOG(ERROR) << "Error getting user key filename";
		return false;
		}

		D("user key '%s'", path);

		if (stat(path, &buf) == -1) {
		struct stat buf;
		if (stat(path.c_str(), &buf) == -1) {
		LOG(INFO) << "User key '" << path << "' does not exist...";
		if (!generate_key(path)) {
		D("Failed to generate new key");
		return 0;
		LOG(ERROR) << "Failed to generate new key";
		return false;
		}
		}

		return read_key(path, list);
		return read_key(path);
		}

		static void get_vendor_keys(struct listnode* key_list) {
		static void get_vendor_keys() {
		const char* adb_keys_path = getenv("ADB_VENDOR_KEYS");
		if (adb_keys_path == nullptr) {
		return;
		}

		for (const auto& path : android::base::Split(adb_keys_path, ENV_PATH_SEPARATOR_STR)) {
		if (!read_key(path.c_str(), key_list)) {
		D("Failed to read '%s'", path.c_str());
		if (!read_key(path.c_str())) {
		PLOG(ERROR) << "Failed to read '" << path << "'";
		}
		}
		}

		int adb_auth_sign(void node, const unsigned char token, size_t token_size,
		unsigned char* sig)
		{
		unsigned int len;
		struct adb_private_key *key = node_to_item(node, struct adb_private_key, node);
		std::deque<RSA*> adb_auth_get_private_keys() {
		std::deque<RSA*> result;

		// Copy all the currently known keys, increasing their reference count so they're
		// usable until both we and the caller have freed our pointers.
		std::lock_guard<std::mutex> lock(g_key_list_mutex);
		for (const auto& key : g_key_list) {
		RSA_up_ref(key); // Since we're handing out another pointer to this key...
		result.push_back(key);
		}

		// Add a sentinel to the list. Our caller uses this to mean "out of private keys,
		// but try using the public key" (the empty deque could otherwise mean this _or_
		// that this function hasn't been called yet to request the keys).
		result.push_back(nullptr);

		return result;
		}

		int adb_auth_sign(RSA* key, const unsigned char* token, size_t token_size, unsigned char* sig) {
		if (token_size != TOKEN_SIZE) {
		D("Unexpected token size %zd", token_size);
		return 0;
		}

		if (!RSA_sign(NID_sha1, token, token_size, sig, &len, key->rsa)) {
		unsigned int len;
		if (!RSA_sign(NID_sha1, token, token_size, sig, &len, key)) {
		return 0;
		}

		@@ -254,40 +250,17 @@ int adb_auth_sign(void node, const unsigned char token, size_t token_size,
		return (int)len;
		}

		void adb_auth_nextkey(void current)
		{
		struct listnode *item;

		if (list_empty(&key_list))
		return NULL;

		if (!current)
		return list_head(&key_list);

		list_for_each(item, &key_list) {
		if (item == current) {
		/* current is the last item, we tried all the keys */
		if (item->next == &key_list)
		return NULL;
		return item->next;
		}
		}

		return NULL;
		}

		std::string adb_auth_get_userkey() {
		char path[PATH_MAX];
		int ret = get_user_keyfilepath(path, sizeof(path) - 4);
		if (ret < 0 \|\| ret >= (signed)(sizeof(path) - 4)) {
		D("Error getting user key filename");
		std::string path = get_user_key_path();
		if (path.empty()) {
		PLOG(ERROR) << "Error getting user key filename";
		return "";
		}
		strcat(path, ".pub");
		path += ".pub";

		std::string content;
		if (!android::base::ReadFileToString(path, &content)) {
		D("Can't load '%s'", path);
		PLOG(ERROR) << "Can't load '" << path << "'";
		return "";
		}
		return content;
		@@ -297,19 +270,14 @@ int adb_auth_keygen(const char* filename) {
		return (generate_key(filename) == 0);
		}

		void adb_auth_init(void)
		{
		int ret;

		D("adb_auth_init");

		list_init(&key_list);
		void adb_auth_init() {
		LOG(INFO) << "adb_auth_init...";

		ret = get_user_key(&key_list);
		if (!ret) {
		D("Failed to get user key");
		if (!get_user_key()) {
		LOG(ERROR) << "Failed to get user key";
		return;
		}

		get_vendor_keys(&key_list);
		std::lock_guard<std::mutex> lock(g_key_list_mutex);
		get_vendor_keys();
		}