1f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* 2f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Dropbear SSH 3f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 4f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Copyright (c) 2002,2003 Matt Johnston 5f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Copyright (c) 2004 by Mihnea Stoenescu 6f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * All rights reserved. 7f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 8f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Permission is hereby granted, free of charge, to any person obtaining a copy 9f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * of this software and associated documentation files (the "Software"), to deal 10f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * in the Software without restriction, including without limitation the rights 11f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * copies of the Software, and to permit persons to whom the Software is 13f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * furnished to do so, subject to the following conditions: 14f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 15f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * The above copyright notice and this permission notice shall be included in 16f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * all copies or substantial portions of the Software. 17f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 18f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 21f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * SOFTWARE. */ 25f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 26f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "includes.h" 27f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "session.h" 28f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "auth.h" 29f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "dbutil.h" 30f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "buffer.h" 31f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "ssh.h" 32f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "packet.h" 33f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "runopts.h" 34f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 35f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid cli_authinitialise() { 36f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 37f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project memset(&ses.authstate, 0, sizeof(ses.authstate)); 38f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 39f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 40f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 41f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* Send a "none" auth request to get available methods */ 42f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid cli_auth_getmethods() { 43f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 44f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter cli_auth_getmethods")) 45f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 46f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project CHECKCLEARTOWRITE(); 47f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 48f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, SSH_MSG_USERAUTH_REQUEST); 49f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putstring(ses.writepayload, cli_opts.username, 50f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project strlen(cli_opts.username)); 51f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putstring(ses.writepayload, SSH_SERVICE_CONNECTION, 52f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project SSH_SERVICE_CONNECTION_LEN); 53f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putstring(ses.writepayload, "none", 4); /* 'none' method */ 54f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 55f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project encrypt_packet(); 56f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave cli_auth_getmethods")) 57f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 58f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 59f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 60f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid recv_msg_userauth_banner() { 61f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 62f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char* banner = NULL; 63f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int bannerlen; 64f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int i, linecount; 65f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 66f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter recv_msg_userauth_banner")) 67f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (ses.authstate.authdone) { 68f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave recv_msg_userauth_banner: banner after auth done")) 69f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return; 70f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 71f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 72f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project banner = buf_getstring(ses.payload, &bannerlen); 73f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_eatstring(ses.payload); /* The language string */ 74f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 75f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (bannerlen > MAX_BANNER_SIZE) { 76f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("recv_msg_userauth_banner: bannerlen too long: %d", bannerlen)) 77f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 78f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 79f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 80f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cleantext(banner); 81f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 82f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Limit to 25 lines */ 83f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project linecount = 1; 84f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project for (i = 0; i < bannerlen; i++) { 85f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (banner[i] == '\n') { 86f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (linecount >= MAX_BANNER_LINES) { 87f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project banner[i] = '\0'; 88f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 89f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 90f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project linecount++; 91f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 92f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 93f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 94f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project printf("%s\n", banner); 95f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 96f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectout: 97f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(banner); 98f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave recv_msg_userauth_banner")) 99f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 100f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 101f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* This handles the message-specific types which 102f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * all have a value of 60. These are 103f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * SSH_MSG_USERAUTH_PASSWD_CHANGEREQ, 104f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * SSH_MSG_USERAUTH_PK_OK, & 105f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * SSH_MSG_USERAUTH_INFO_REQUEST. */ 106f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid recv_msg_userauth_specific_60() { 107f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 108f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_PUBKEY_AUTH 109f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_ses.lastauthtype == AUTH_TYPE_PUBKEY) { 110f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project recv_msg_userauth_pk_ok(); 111f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return; 112f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 113f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 114f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 115f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_INTERACT_AUTH 116f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_ses.lastauthtype == AUTH_TYPE_INTERACT) { 117f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project recv_msg_userauth_info_request(); 118f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return; 119f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 120f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 121f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 122f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_PASSWORD_AUTH 123f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_ses.lastauthtype == AUTH_TYPE_PASSWORD) { 124f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Eventually there could be proper password-changing 125f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * support. However currently few servers seem to 126f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * implement it, and password auth is last-resort 127f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * regardless - keyboard-interactive is more likely 128f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * to be used anyway. */ 129f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_close("Your password has expired."); 130f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 131f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 132f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 133f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_exit("Unexpected userauth packet"); 134f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 135f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 136f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid recv_msg_userauth_failure() { 137f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 138f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char * methods = NULL; 139f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char * tok = NULL; 140f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int methlen = 0; 141f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int partial = 0; 142f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int i = 0; 143f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 144f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("<- MSG_USERAUTH_FAILURE")) 145f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter recv_msg_userauth_failure")) 146f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 147f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_ses.state != USERAUTH_REQ_SENT) { 148f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Perhaps we should be more fatal? */ 149f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_exit("Unexpected userauth failure"); 150f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 151f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 152f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_PUBKEY_AUTH 153f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* If it was a pubkey auth request, we should cross that key 154f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * off the list. */ 155f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_ses.lastauthtype == AUTH_TYPE_PUBKEY) { 156f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_pubkeyfail(); 157f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 158f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 159f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 160f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_INTERACT_AUTH 161f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* If we get a failure message for keyboard interactive without 162f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * receiving any request info packet, then we don't bother trying 163f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * keyboard interactive again */ 164f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_ses.lastauthtype == AUTH_TYPE_INTERACT 165f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project && !cli_ses.interact_request_received) { 166f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("setting auth_interact_failed = 1")) 167f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.auth_interact_failed = 1; 168f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 169f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 170f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 171f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.lastauthtype = AUTH_TYPE_NONE; 172f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 173f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project methods = buf_getstring(ses.payload, &methlen); 174f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 175f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project partial = buf_getbool(ses.payload); 176f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 177f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (partial) { 178f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_INFO, "Authentication partially succeeded, more attempts required"); 179f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else { 180f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.failcount++; 181f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 182f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 183f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("Methods (len %d): '%s'", methlen, methods)) 184f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 185f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.authdone=0; 186f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.authtypes=0; 187f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 188f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Split with nulls rather than commas */ 189f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project for (i = 0; i < methlen; i++) { 190f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (methods[i] == ',') { 191f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project methods[i] = '\0'; 192f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 193f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 194f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 195f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tok = methods; /* tok stores the next method we'll compare */ 196f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project for (i = 0; i <= methlen; i++) { 197f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (methods[i] == '\0') { 198f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("auth method '%s'", tok)) 199f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_PUBKEY_AUTH 200f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (strncmp(AUTH_METHOD_PUBKEY, tok, 201f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project AUTH_METHOD_PUBKEY_LEN) == 0) { 202f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.authtypes |= AUTH_TYPE_PUBKEY; 203f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 204f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 205f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_INTERACT_AUTH 206f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (strncmp(AUTH_METHOD_INTERACT, tok, 207f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project AUTH_METHOD_INTERACT_LEN) == 0) { 208f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.authtypes |= AUTH_TYPE_INTERACT; 209f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 210f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 211f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_PASSWORD_AUTH 212f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (strncmp(AUTH_METHOD_PASSWORD, tok, 213f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project AUTH_METHOD_PASSWORD_LEN) == 0) { 214f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.authtypes |= AUTH_TYPE_PASSWORD; 215f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 216f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 217f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tok = &methods[i+1]; /* Must make sure we don't use it after the 218f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project last loop, since it'll point to something 219f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project undefined */ 220f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 221f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 222f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 223f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(methods); 224f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 225f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.state = USERAUTH_FAIL_RCVD; 226f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 227f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave recv_msg_userauth_failure")) 228f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 229f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 230f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid recv_msg_userauth_success() { 231f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("received msg_userauth_success")) 232f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.authdone = 1; 233f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.state = USERAUTH_SUCCESS_RCVD; 234f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.lastauthtype = AUTH_TYPE_NONE; 235f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 236f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 237f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid cli_auth_try() { 238f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 239f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int finished = 0; 240f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter cli_auth_try")) 241f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 242f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project CHECKCLEARTOWRITE(); 243f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 244f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Order to try is pubkey, interactive, password. 245f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * As soon as "finished" is set for one, we don't do any more. */ 246f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_PUBKEY_AUTH 247f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (ses.authstate.authtypes & AUTH_TYPE_PUBKEY) { 248f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project finished = cli_auth_pubkey(); 249f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.lastauthtype = AUTH_TYPE_PUBKEY; 250f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 251f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 252f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 253f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_INTERACT_AUTH 254f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (!finished && ses.authstate.authtypes & AUTH_TYPE_INTERACT) { 255f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_ses.auth_interact_failed) { 256f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project finished = 0; 257f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else { 258f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_auth_interactive(); 259f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.lastauthtype = AUTH_TYPE_INTERACT; 260f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project finished = 1; 261f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 262f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 263f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 264f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 265f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_CLI_PASSWORD_AUTH 266f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (!finished && ses.authstate.authtypes & AUTH_TYPE_PASSWORD) { 267f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_auth_password(); 268f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project finished = 1; 269f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.lastauthtype = AUTH_TYPE_PASSWORD; 270f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 271f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 272f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 273f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("cli_auth_try lastauthtype %d", cli_ses.lastauthtype)) 274f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 275f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (!finished) { 276f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_exit("No auth methods could be used."); 277f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 278f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 279f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave cli_auth_try")) 280f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 281f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 282f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* A helper for getpass() that exits if the user cancels. The returned 283f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * password is statically allocated by getpass() */ 284f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectchar* getpass_or_cancel(char* prompt) 285f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project{ 286f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project char* password = NULL; 287f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 288f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project password = getpass(prompt); 289f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 290f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* 0x03 is a ctrl-c character in the buffer. */ 291f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (password == NULL || strchr(password, '\3') != NULL) { 292f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_close("Interrupted."); 293f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 294f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return password; 295f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 296