dropbear: cli-auth.c annotate

annotate cli-auth.c @ 1459:06d52bcb8094

Pointer parameter could be declared as pointing to const

author	Francois Perrad <francois.perrad@gadz.org>
date	Sat, 19 Aug 2017 17:16:13 +0200
parents	6959c88c8f13
children	2d450c1056e3

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;
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	63 if (getenv(DROPBEAR_PASSWORD_ENV)) {
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	64 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	65 }
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	66 if (cli_auth_try() == DROPBEAR_SUCCESS) {
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	67 TRACE(("skipped initial none auth query"))
7032deca6b90 Disable immediate auth for delayed-zlib mode Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	68 /* 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	69 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	70 }
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	71 }
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	72 #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	73 TRACE(("leave cli_auth_getmethods"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	76 void recv_msg_userauth_banner() {
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	77
1115 efb7e545a65e Turn banner, methods and tok local variable into char * Gaël PORTAY <gael.portay@gmail.com> parents: 1094 diff changeset	78 char* banner = NULL;
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	79 unsigned int bannerlen;
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	80 unsigned int i, linecount;
1296 6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	81 int truncated = 0;
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	82
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	83 TRACE(("enter recv_msg_userauth_banner"))
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	84 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	85 TRACE(("leave recv_msg_userauth_banner: banner after auth done"))
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	86 return;
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	87 }
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	88
1122 aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings Matt Johnston <matt@ucc.asn.au> parents: 1115 diff changeset	89 banner = buf_getstring(ses.payload, &bannerlen);
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	90 buf_eatstring(ses.payload); /* The language string */
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	91
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	92 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	93 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	94 truncated = 1;
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	95 } else {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	96 cleantext(banner);
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	97
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	98 /* Limit to 24 lines */
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	99 linecount = 1;
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	100 for (i = 0; i < bannerlen; i++) {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	101 if (banner[i] == '\n') {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	102 if (linecount >= MAX_BANNER_LINES) {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	103 banner[i] = '\0';
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	104 truncated = 1;
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	105 break;
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	106 }
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	107 linecount++;
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 }
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	110 fprintf(stderr, "%s\n", banner);
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	111 }
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	112
1296 6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	113 if (truncated) {
6959c88c8f13 message about truncated banner Matt Johnston <matt@ucc.asn.au> parents: 1295 diff changeset	114 fprintf(stderr, "[Banner from the server is too long]\n");
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	115 }
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	116
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	117 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	118 TRACE(("leave recv_msg_userauth_banner"))
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	119 }
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	120
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	121 /* This handles the message-specific types which
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	122 * all have a value of 60. These are
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	123 * SSH_MSG_USERAUTH_PASSWD_CHANGEREQ,
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	124 * SSH_MSG_USERAUTH_PK_OK, &
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	125 * SSH_MSG_USERAUTH_INFO_REQUEST. */
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	126 void recv_msg_userauth_specific_60() {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	127
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	128 #if DROPBEAR_CLI_PUBKEY_AUTH
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	129 if (cli_ses.lastauthtype == AUTH_TYPE_PUBKEY) {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	130 recv_msg_userauth_pk_ok();
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	131 return;
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	132 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	133 #endif
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	134
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	135 #if DROPBEAR_CLI_INTERACT_AUTH
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	136 if (cli_ses.lastauthtype == AUTH_TYPE_INTERACT) {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	137 recv_msg_userauth_info_request();
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	138 return;
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	139 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	140 #endif
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	141
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	142 #if DROPBEAR_CLI_PASSWORD_AUTH
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	143 if (cli_ses.lastauthtype == AUTH_TYPE_PASSWORD) {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	144 /* Eventually there could be proper password-changing
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	145 * support. However currently few servers seem to
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	146 * implement it, and password auth is last-resort
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	147 * regardless - keyboard-interactive is more likely
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	148 * to be used anyway. */
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	149 dropbear_close("Your password has expired.");
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	150 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	151 #endif
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 dropbear_exit("Unexpected userauth packet");
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	154 }
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	155
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 void recv_msg_userauth_failure() {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157
1115 efb7e545a65e Turn banner, methods and tok local variable into char * Gaël PORTAY <gael.portay@gmail.com> parents: 1094 diff changeset	158 char * methods = NULL;
efb7e545a65e Turn banner, methods and tok local variable into char * Gaël PORTAY <gael.portay@gmail.com> parents: 1094 diff changeset	159 char * tok = NULL;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 unsigned int methlen = 0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	161 unsigned int partial = 0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162 unsigned int i = 0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163
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	164 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	165 TRACE(("enter recv_msg_userauth_failure"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	167 if (ses.authstate.authdone) {
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	168 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	169 return;
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	170 }
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	171
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	172 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	173 /* Perhaps we should be more fatal? */
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	174 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	175 }
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	176
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	177 /* 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	178 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	179 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	180 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	181 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	182 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	183 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	184 return;
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	185 } else {
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	186 #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	187 /* 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	188 * off the list. */
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	189 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	190 cli_pubkeyfail();
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	191 }
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	192 #endif
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	193
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	194 #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	195 /* 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	196 * 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	197 * keyboard interactive again */
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	198 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	199 && !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	200 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	201 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	202 }
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 734 diff changeset	203 #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	204 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	205 cli_ses.lastauthtype = AUTH_TYPE_NONE;
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	206 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	207
1122 aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings Matt Johnston <matt@ucc.asn.au> parents: 1115 diff changeset	208 methods = buf_getstring(ses.payload, &methlen);
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	210 partial = buf_getbool(ses.payload);
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	211
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	212 if (partial) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213 dropbear_log(LOG_INFO, "Authentication partially succeeded, more attempts required");
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 } else {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215 ses.authstate.failcount++;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217
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	218 TRACE(("Methods (len %d): '%s'", methlen, methods))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	219
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220 ses.authstate.authdone=0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	221 ses.authstate.authtypes=0;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 /* Split with nulls rather than commas */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	224 for (i = 0; i < methlen; i++) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225 if (methods[i] == ',') {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 methods[i] = '\0';
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	227 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228 }
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 tok = methods; /* tok stores the next method we'll compare */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231 for (i = 0; i <= methlen; i++) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	232 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	233 TRACE(("auth method '%s'", tok))
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	234 #if DROPBEAR_CLI_PUBKEY_AUTH
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	235 if (strncmp(AUTH_METHOD_PUBKEY, tok,
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	236 AUTH_METHOD_PUBKEY_LEN) == 0) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237 ses.authstate.authtypes \|= AUTH_TYPE_PUBKEY;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239 #endif
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	240 #if DROPBEAR_CLI_INTERACT_AUTH
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	241 if (strncmp(AUTH_METHOD_INTERACT, tok,
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	242 AUTH_METHOD_INTERACT_LEN) == 0) {
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	243 ses.authstate.authtypes \|= AUTH_TYPE_INTERACT;
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	244 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	245 #endif
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	246 #if DROPBEAR_CLI_PASSWORD_AUTH
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	247 if (strncmp(AUTH_METHOD_PASSWORD, tok,
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 AUTH_METHOD_PASSWORD_LEN) == 0) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 ses.authstate.authtypes \|= AUTH_TYPE_PASSWORD;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 #endif
34 e2a1eaa19f22 Client mostly works up to password auth Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	252 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	253 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	254 undefined */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	255 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	256 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	257
114 2be6aa26a8c9 Leak found with MallocDebug - it's kinda useful Matt Johnston <matt@ucc.asn.au> parents: 74 diff changeset	258 m_free(methods);
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259
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	260 TRACE(("leave recv_msg_userauth_failure"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	262
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263 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	264 /* 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	265 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	266
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	267 TRACE(("received msg_userauth_success"))
501 d58c478bd399 Add support for [email protected] delayed compression. Matt Johnston <matt@ucc.asn.au> parents: 441 diff changeset	268 /* 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	269 * will enable compression in the transport layer */
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270 ses.authstate.authdone = 1;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	271 cli_ses.state = USERAUTH_SUCCESS_RCVD;
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	272 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	273
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	274 #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	275 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	276 #endif
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	277 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	278
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	279 int cli_auth_try() {
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280
300 baea1d43e7eb Some cleanups/fixes for various TRACE statements Matt Johnston <matt@ucc.asn.au> parents: 268 diff changeset	281 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	282 TRACE(("enter cli_auth_try"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	283
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	284 CHECKCLEARTOWRITE();
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	286 /* Order to try is pubkey, interactive, password.
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	287 * 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	288 #if DROPBEAR_CLI_PUBKEY_AUTH
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289 if (ses.authstate.authtypes & AUTH_TYPE_PUBKEY) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290 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	291 cli_ses.lastauthtype = AUTH_TYPE_PUBKEY;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293 #endif
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	295 #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	296 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	297 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	298 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	299 } 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	300 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	301 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	302 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	303 }
732 2e5f2bc60e40 Try password before interactive - bit of a hack Matt Johnston <matt@ucc.asn.au> parents: 730 diff changeset	304 }
2e5f2bc60e40 Try password before interactive - bit of a hack Matt Johnston <matt@ucc.asn.au> parents: 730 diff changeset	305 #endif
2e5f2bc60e40 Try password before interactive - bit of a hack Matt Johnston <matt@ucc.asn.au> parents: 730 diff changeset	306
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	307 #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	308 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	309 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	310 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	311 } 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	312 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	313 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	314 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	315 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	316 }
249 efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	317 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	318 }
efbaf6b03837 added keyboard-interactive client support Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	319 #endif
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 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	322
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	323 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	324 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	325 return DROPBEAR_SUCCESS;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	326 }
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	327 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	328 return DROPBEAR_FAILURE;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 }
268 475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	330
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1249 diff changeset	331 #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	332 /* 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	333 * 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	334 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	335 {
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	336 char* password = NULL;
441 fdf06a5a54e4 Allow reading dbclient password from an environment var Matt Johnston <matt@ucc.asn.au> parents: 334 diff changeset	337
fdf06a5a54e4 Allow reading dbclient password from an environment var Matt Johnston <matt@ucc.asn.au> parents: 334 diff changeset	338 #ifdef DROPBEAR_PASSWORD_ENV
1249 c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	339 /* Password provided in an environment var */
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	340 password = getenv(DROPBEAR_PASSWORD_ENV);
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	341 if (password)
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	342 {
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	343 return password;
c6346c63281b refactor indentation with hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1156 diff changeset	344 }
441 fdf06a5a54e4 Allow reading dbclient password from an environment var Matt Johnston <matt@ucc.asn.au> parents: 334 diff changeset	345 #endif
268 475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	346
334 8f3ec7c104d9 Make the dbclient password prompt more useful Matt Johnston <matt@ucc.asn.au> parents: 300 diff changeset	347 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	348
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	349 /* 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	350 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	351 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	352 }
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	353 return password;
475a818dd6e7 Cancel a dbclient password prompt if the user presses ctrl-c. Matt Johnston <matt@ucc.asn.au> parents: 249 diff changeset	354 }
1156 a8f4dade70e5 avoid getpass when not used Mike Frysinger <vapier@gentoo.org> parents: 1122 diff changeset	355 #endif

Mercurial > dropbear

annotate cli-auth.c @ 1459:06d52bcb8094