dropbear: cli-auth.c annotate

annotate cli-auth.c @ 1754:064f5be2fc45

Add buf_decrpos()

author	Matt Johnston <matt@ucc.asn.au>
date	Sat, 24 Oct 2020 18:56:45 +0800
parents	6c16a05023aa
children	bf1912d2d6e9

rev	line source
74 e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	1 /*
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	2 * Dropbear SSH
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	3 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	5 * Copyright (c) 2004 by Mihnea Stoenescu
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	6 * All rights reserved.
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	7 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	8 * Permission is hereby granted, free of charge, to any person obtaining a copy
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	9 * of this software and associated documentation files (the "Software"), to deal
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	10 * in the Software without restriction, including without limitation the rights
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	12 * copies of the Software, and to permit persons to whom the Software is
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	13 * furnished to do so, subject to the following conditions:
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	14 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	15 * The above copyright notice and this permission notice shall be included in
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	16 * all copies or substantial portions of the Software.
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	17 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	24 * SOFTWARE. */
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	25
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 #include "includes.h"
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 #include "session.h"
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 #include "auth.h"
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 #include "dbutil.h"
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 #include "buffer.h"
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 #include "ssh.h"
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 #include "packet.h"
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 #include "runopts.h"
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 void cli_authinitialise() {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37 memset(&ses.authstate, 0, sizeof(ses.authstate));
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	38 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41 /* Send a "none" auth request to get available methods */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42 void cli_auth_getmethods() {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	43 TRACE(("enter cli_auth_getmethods"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 CHECKCLEARTOWRITE();
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 buf_putbyte(ses.writepayload, SSH_MSG_USERAUTH_REQUEST);
1122 aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings Matt Johnston <matt@ucc.asn.au> parents: 1115 diff changeset	46 buf_putstring(ses.writepayload, cli_opts.username,
35 0ad5fb979f42 set the isserver flag (oops) Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	47 strlen(cli_opts.username));
1122 aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings Matt Johnston <matt@ucc.asn.au> parents: 1115 diff changeset	48 buf_putstring(ses.writepayload, SSH_SERVICE_CONNECTION,
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 SSH_SERVICE_CONNECTION_LEN);
1122 aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings Matt Johnston <matt@ucc.asn.au> parents: 1115 diff changeset	50 buf_putstring(ses.writepayload, "none", 4); /* 'none' method */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 encrypt_packet();
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	53
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	54 #if DROPBEAR_CLI_IMMEDIATE_AUTH
894 7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	55 /* We can't haven't two auth requests in-flight with delayed zlib mode
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	56 since if the first one succeeds then the remote side will
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	57 expect the second one to be compressed.
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	58 Race described at
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	59 http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/zlib-openssh.html
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	60 */
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	61 if (ses.keys->trans.algo_comp != DROPBEAR_COMP_ZLIB_DELAY) {
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	62 ses.authstate.authtypes = AUTH_TYPE_PUBKEY;
1514 6c16a05023aa rename some options and move some to sysoptions.h Matt Johnston <matt@ucc.asn.au> parents: 1499 diff changeset	63 #if DROPBEAR_USE_PASSWORD_ENV
894 7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	64 if (getenv(DROPBEAR_PASSWORD_ENV)) {
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	65 ses.authstate.authtypes \|= AUTH_TYPE_PASSWORD \| AUTH_TYPE_INTERACT;
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	66 }
1499 2d450c1056e3 options: Complete the transition to numeric toggles (`#if') Michael Witten <mfwitten@gmail.com> parents: 1459 diff changeset	67 #endif
894 7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	68 if (cli_auth_try() == DROPBEAR_SUCCESS) {
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	69 TRACE(("skipped initial none auth query"))
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	70 /* Note that there will be two auth responses in-flight */
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	71 cli_ses.ignore_next_auth_response = 1;
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	72 }
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	73 }
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	74 #endif
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	75 TRACE(("leave cli_auth_getmethods"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	78 void recv_msg_userauth_banner() {
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	79
1115 efb7e545a65e Turn banner, methods and tok local variable into char * Gaël PORTAY <gael.portay@gmail.com> parents: 1094 diff changeset	80 char* banner = NULL;
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	81 unsigned int bannerlen;
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	82 unsigned int i, linecount;
1296 6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	83 int truncated = 0;
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	84
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	85 TRACE(("enter recv_msg_userauth_banner"))
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	86 if (ses.authstate.authdone) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	87 TRACE(("leave recv_msg_userauth_banner: banner after auth done"))
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	88 return;
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	89 }
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	90
1122 aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings Matt Johnston <matt@ucc.asn.au> parents: 1115 diff changeset	91 banner = buf_getstring(ses.payload, &bannerlen);
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	92 buf_eatstring(ses.payload); /* The language string */
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	93
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	94 if (bannerlen > MAX_BANNER_SIZE) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	95 TRACE(("recv_msg_userauth_banner: bannerlen too long: %d", bannerlen))
1296 6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	96 truncated = 1;
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	97 } else {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	98 cleantext(banner);
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	99
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	100 /* Limit to 24 lines */
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	101 linecount = 1;
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	102 for (i = 0; i < bannerlen; i++) {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	103 if (banner[i] == '\n') {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	104 if (linecount >= MAX_BANNER_LINES) {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	105 banner[i] = '\0';
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	106 truncated = 1;
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	107 break;
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	108 }
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	109 linecount++;
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	110 }
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	111 }
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	112 fprintf(stderr, "%s\n", banner);
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	113 }
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	114
1296 6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	115 if (truncated) {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	116 fprintf(stderr, "[Banner from the server is too long]\n");
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	117 }
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	118
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	119 m_free(banner);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	120 TRACE(("leave recv_msg_userauth_banner"))
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	121 }
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	122
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	123 /* This handles the message-specific types which
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	124 * all have a value of 60. These are
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	125 * SSH_MSG_USERAUTH_PASSWD_CHANGEREQ,
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	126 * SSH_MSG_USERAUTH_PK_OK, &
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	127 * SSH_MSG_USERAUTH_INFO_REQUEST. */
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	128 void recv_msg_userauth_specific_60() {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	129
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	130 #if DROPBEAR_CLI_PUBKEY_AUTH
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	131 if (cli_ses.lastauthtype == AUTH_TYPE_PUBKEY) {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	132 recv_msg_userauth_pk_ok();
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	133 return;
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	134 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	135 #endif
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	136
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	137 #if DROPBEAR_CLI_INTERACT_AUTH
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	138 if (cli_ses.lastauthtype == AUTH_TYPE_INTERACT) {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	139 recv_msg_userauth_info_request();
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	140 return;
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	141 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	142 #endif
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	143
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	144 #if DROPBEAR_CLI_PASSWORD_AUTH
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	145 if (cli_ses.lastauthtype == AUTH_TYPE_PASSWORD) {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	146 /* Eventually there could be proper password-changing
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	147 * support. However currently few servers seem to
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	148 * implement it, and password auth is last-resort
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	149 * regardless - keyboard-interactive is more likely
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	150 * to be used anyway. */
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	151 dropbear_close("Your password has expired.");
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	152 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	153 #endif
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	154
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	155 dropbear_exit("Unexpected userauth packet");
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	156 }
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	157
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158 void recv_msg_userauth_failure() {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159
1115 efb7e545a65e Turn banner, methods and tok local variable into char * Gaël PORTAY <gael.portay@gmail.com> parents: 1094 diff changeset	160 char * methods = NULL;
efb7e545a65e Turn banner, methods and tok local variable into char * Gaël PORTAY <gael.portay@gmail.com> parents: 1094 diff changeset	161 char * tok = NULL;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162 unsigned int methlen = 0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163 unsigned int partial = 0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 unsigned int i = 0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	166 TRACE(("<- MSG_USERAUTH_FAILURE"))
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	167 TRACE(("enter recv_msg_userauth_failure"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	169 if (ses.authstate.authdone) {
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	170 TRACE(("leave recv_msg_userauth_failure, already authdone."))
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	171 return;
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	172 }
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	173
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	174 if (cli_ses.state != USERAUTH_REQ_SENT) {
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	175 /* Perhaps we should be more fatal? */
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	176 dropbear_exit("Unexpected userauth failure");
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	177 }
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	178
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	179 /* When DROPBEAR_CLI_IMMEDIATE_AUTH is set there will be an initial response for
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	180 the "none" auth request, and then a response to the immediate auth request.
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	181 We need to be careful handling them. */
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	182 if (cli_ses.ignore_next_auth_response) {
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	183 cli_ses.state = USERAUTH_REQ_SENT;
931 ac340d3e452e Fix pubkey auth if the first key presented fails (infinite loop of Matt Johnston <matt@ucc.asn.au> parents: 894 diff changeset	184 cli_ses.ignore_next_auth_response = 0;
ac340d3e452e Fix pubkey auth if the first key presented fails (infinite loop of Matt Johnston <matt@ucc.asn.au> parents: 894 diff changeset	185 TRACE(("leave recv_msg_userauth_failure, ignored response, state set to USERAUTH_REQ_SENT"));
ac340d3e452e Fix pubkey auth if the first key presented fails (infinite loop of Matt Johnston <matt@ucc.asn.au> parents: 894 diff changeset	186 return;
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	187 } else {
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	188 #if DROPBEAR_CLI_PUBKEY_AUTH
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	189 /* If it was a pubkey auth request, we should cross that key
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	190 * off the list. */
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	191 if (cli_ses.lastauthtype == AUTH_TYPE_PUBKEY) {
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	192 cli_pubkeyfail();
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	193 }
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	194 #endif
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	195
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	196 #if DROPBEAR_CLI_INTERACT_AUTH
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	197 /* If we get a failure message for keyboard interactive without
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	198 * receiving any request info packet, then we don't bother trying
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	199 * keyboard interactive again */
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	200 if (cli_ses.lastauthtype == AUTH_TYPE_INTERACT
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	201 && !cli_ses.interact_request_received) {
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	202 TRACE(("setting auth_interact_failed = 1"))
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	203 cli_ses.auth_interact_failed = 1;
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	204 }
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	205 #endif
931 ac340d3e452e Fix pubkey auth if the first key presented fails (infinite loop of Matt Johnston <matt@ucc.asn.au> parents: 894 diff changeset	206 cli_ses.state = USERAUTH_FAIL_RCVD;
ac340d3e452e Fix pubkey auth if the first key presented fails (infinite loop of Matt Johnston <matt@ucc.asn.au> parents: 894 diff changeset	207 cli_ses.lastauthtype = AUTH_TYPE_NONE;
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	208 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	209
1122 aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings Matt Johnston <matt@ucc.asn.au> parents: 1115 diff changeset	210 methods = buf_getstring(ses.payload, &methlen);
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	211
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	212 partial = buf_getbool(ses.payload);
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 if (partial) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215 dropbear_log(LOG_INFO, "Authentication partially succeeded, more attempts required");
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 } else {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217 ses.authstate.failcount++;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	218 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	219
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	220 TRACE(("Methods (len %d): '%s'", methlen, methods))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	221
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222 ses.authstate.authdone=0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 ses.authstate.authtypes=0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	224
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225 /* Split with nulls rather than commas */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 for (i = 0; i < methlen; i++) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	227 if (methods[i] == ',') {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228 methods[i] = '\0';
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	229 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	230 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	232 tok = methods; /* tok stores the next method we'll compare */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233 for (i = 0; i <= methlen; i++) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	234 if (methods[i] == '\0') {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	235 TRACE(("auth method '%s'", tok))
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	236 #if DROPBEAR_CLI_PUBKEY_AUTH
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237 if (strncmp(AUTH_METHOD_PUBKEY, tok,
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 AUTH_METHOD_PUBKEY_LEN) == 0) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239 ses.authstate.authtypes \|= AUTH_TYPE_PUBKEY;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	241 #endif
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	242 #if DROPBEAR_CLI_INTERACT_AUTH
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	243 if (strncmp(AUTH_METHOD_INTERACT, tok,
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	244 AUTH_METHOD_INTERACT_LEN) == 0) {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	245 ses.authstate.authtypes \|= AUTH_TYPE_INTERACT;
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	246 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	247 #endif
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	248 #if DROPBEAR_CLI_PASSWORD_AUTH
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 if (strncmp(AUTH_METHOD_PASSWORD, tok,
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 AUTH_METHOD_PASSWORD_LEN) == 0) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 ses.authstate.authtypes \|= AUTH_TYPE_PASSWORD;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	252 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	253 #endif
34 e2a1eaa19f22 Client mostly works up to password auth Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	254 tok = &methods[i+1]; /* Must make sure we don't use it after the
e2a1eaa19f22 Client mostly works up to password auth Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	255 last loop, since it'll point to something
e2a1eaa19f22 Client mostly works up to password auth Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	256 undefined */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	257 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	258 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259
114 2be6aa26a8c9 Leak found with MallocDebug - it's kinda useful Matt Johnston <matt@ucc.asn.au> parents: 74 diff changeset	260 m_free(methods);
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	262 TRACE(("leave recv_msg_userauth_failure"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	264
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265 void recv_msg_userauth_success() {
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	266 /* This function can validly get called multiple times
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	267 if DROPBEAR_CLI_IMMEDIATE_AUTH is set */
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	268
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	269 TRACE(("received msg_userauth_success"))
501 d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 441 diff changeset	270 /* Note: in delayed-zlib mode, setting authdone here
d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 441 diff changeset	271 * will enable compression in the transport layer */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	272 ses.authstate.authdone = 1;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	273 cli_ses.state = USERAUTH_SUCCESS_RCVD;
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	274 cli_ses.lastauthtype = AUTH_TYPE_NONE;
552 de3653483ac0 - Client auth using an agent's key works. Still need to implement client Matt Johnston <matt@ucc.asn.au> parents: 545 diff changeset	275
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	276 #if DROPBEAR_CLI_PUBKEY_AUTH
552 de3653483ac0 - Client auth using an agent's key works. Still need to implement client Matt Johnston <matt@ucc.asn.au> parents: 545 diff changeset	277 cli_auth_pubkey_cleanup();
de3653483ac0 - Client auth using an agent's key works. Still need to implement client Matt Johnston <matt@ucc.asn.au> parents: 545 diff changeset	278 #endif
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	279 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280
734 619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	281 int cli_auth_try() {
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282
300 baea1d43e7eb Some cleanups/fixes for various TRACE statements Matt Johnston <matt@ucc.asn.au> parents: 268 diff changeset	283 int finished = 0;
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 114 diff changeset	284 TRACE(("enter cli_auth_try"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286 CHECKCLEARTOWRITE();
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	287
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	288 /* Order to try is pubkey, interactive, password.
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	289 * As soon as "finished" is set for one, we don't do any more. */
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	290 #if DROPBEAR_CLI_PUBKEY_AUTH
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	291 if (ses.authstate.authtypes & AUTH_TYPE_PUBKEY) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292 finished = cli_auth_pubkey();
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	293 cli_ses.lastauthtype = AUTH_TYPE_PUBKEY;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	295 #endif
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	296
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	297 #if DROPBEAR_CLI_PASSWORD_AUTH
734 619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	298 if (!finished && (ses.authstate.authtypes & AUTH_TYPE_PASSWORD)) {
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	299 if (ses.keys->trans.algo_crypt->cipherdesc == NULL) {
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	300 fprintf(stderr, "Sorry, I won't let you use password auth unencrypted.\n");
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	301 } else {
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	302 cli_auth_password();
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	303 finished = 1;
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	304 cli_ses.lastauthtype = AUTH_TYPE_PASSWORD;
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	305 }
732 2e5f2bc60e40 Try password before interactive - bit of a hack Matt Johnston <matt@ucc.asn.au> parents: 730 diff changeset	306 }
2e5f2bc60e40 Try password before interactive - bit of a hack Matt Johnston <matt@ucc.asn.au> parents: 730 diff changeset	307 #endif
2e5f2bc60e40 Try password before interactive - bit of a hack Matt Johnston <matt@ucc.asn.au> parents: 730 diff changeset	308
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	309 #if DROPBEAR_CLI_INTERACT_AUTH
734 619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	310 if (!finished && (ses.authstate.authtypes & AUTH_TYPE_INTERACT)) {
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	311 if (ses.keys->trans.algo_crypt->cipherdesc == NULL) {
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	312 fprintf(stderr, "Sorry, I won't let you use interactive auth unencrypted.\n");
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	313 } else {
734 619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	314 if (!cli_ses.auth_interact_failed) {
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	315 cli_auth_interactive();
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	316 cli_ses.lastauthtype = AUTH_TYPE_INTERACT;
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	317 finished = 1;
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	318 }
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	319 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	320 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	321 #endif
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	322
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	323 TRACE(("cli_auth_try lastauthtype %d", cli_ses.lastauthtype))
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	324
734 619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	325 if (finished) {
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	326 TRACE(("leave cli_auth_try success"))
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	327 return DROPBEAR_SUCCESS;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	328 }
734 619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	329 TRACE(("leave cli_auth_try failure"))
619b1ed837fd Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE Matt Johnston <matt@ucc.asn.au> parents: 732 diff changeset	330 return DROPBEAR_FAILURE;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331 }
268 475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	332
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	333 #if DROPBEAR_CLI_PASSWORD_AUTH \|\| DROPBEAR_CLI_INTERACT_AUTH
268 475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	334 /* A helper for getpass() that exits if the user cancels. The returned
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	335 * password is statically allocated by getpass() */
1459 06d52bcb8094 Pointer parameter could be declared as pointing to const Francois Perrad <francois.perrad@gadz.org> parents: 1296 diff changeset	336 char* getpass_or_cancel(const char* prompt)
268 475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	337 {
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	338 char* password = NULL;
441 fdf06a5a54e4 Allow reading dbclient password from an environment var Matt Johnston <matt@ucc.asn.au> parents: 334 diff changeset	339
1514 6c16a05023aa rename some options and move some to sysoptions.h Matt Johnston <matt@ucc.asn.au> parents: 1499 diff changeset	340 #if DROPBEAR_USE_PASSWORD_ENV
1249 c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	341 /* Password provided in an environment var */
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	342 password = getenv(DROPBEAR_PASSWORD_ENV);
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	343 if (password)
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	344 {
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	345 return password;
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	346 }
441 fdf06a5a54e4 Allow reading dbclient password from an environment var Matt Johnston <matt@ucc.asn.au> parents: 334 diff changeset	347 #endif
268 475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	348
334 8f3ec7c104d9 Make the dbclient password prompt more useful Matt Johnston <matt@ucc.asn.au> parents: 300 diff changeset	349 password = getpass(prompt);
268 475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	350
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	351 /* 0x03 is a ctrl-c character in the buffer. */
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	352 if (password == NULL \|\| strchr(password, '\3') != NULL) {
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	353 dropbear_close("Interrupted.");
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	354 }
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	355 return password;
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	356 }
1156 a8f4dade70e5 avoid getpass when not used Mike Frysinger <vapier@gentoo.org> parents: 1122 diff changeset	357 #endif

Mercurial > dropbear

annotate cli-auth.c @ 1754:064f5be2fc45