1f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* 2f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Dropbear SSH 3f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 4f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Copyright (c) 2004 Martin Carlsson 5f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Portions (c) 2004 Matt Johnston 6f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * All rights reserved. 7f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 8f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Permission is hereby granted, free of charge, to any person obtaining a copy 9f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * of this software and associated documentation files (the "Software"), to deal 10f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * in the Software without restriction, including without limitation the rights 11f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * copies of the Software, and to permit persons to whom the Software is 13f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * furnished to do so, subject to the following conditions: 14f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 15f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * The above copyright notice and this permission notice shall be included in 16f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * all copies or substantial portions of the Software. 17f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 18f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 21f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * SOFTWARE. */ 25f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 26f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* Validates a user password using PAM */ 27f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 28f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "includes.h" 29f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "session.h" 30f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "buffer.h" 31f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "dbutil.h" 32f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "auth.h" 33f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 34f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_SVR_PAM_AUTH 35f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 36f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#if defined(HAVE_SECURITY_PAM_APPL_H) 37f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include <security/pam_appl.h> 38f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#elif defined (HAVE_PAM_PAM_APPL_H) 39f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include <pam/pam_appl.h> 40f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 41f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 42f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstruct UserDataS { 43f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project char* user; 44f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project char* passwd; 45f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project}; 46f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 47f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* PAM conversation function - for now we only handle one message */ 48f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectint 49f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source ProjectpamConvFunc(int num_msg, 50f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project const struct pam_message **msg, 51f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct pam_response **respp, 52f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project void *appdata_ptr) { 53f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 54f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int rc = PAM_SUCCESS; 55f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct pam_response* resp = NULL; 56f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct UserDataS* userDatap = (struct UserDataS*) appdata_ptr; 57f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int msg_len = 0; 58f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int i = 0; 59f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 60f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project const char* message = (*msg)->msg; 61f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 62f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* make a copy we can strip */ 63f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project char * compare_message = m_strdup(message); 64f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 65f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter pamConvFunc")) 66f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 67f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (num_msg != 1) { 68f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* If you're getting here - Dropbear probably can't support your pam 69f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * modules. This whole file is a bit of a hack around lack of 70f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * asynchronocity in PAM anyway. */ 71f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_INFO, "pamConvFunc() called with >1 messages: not supported."); 72f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return PAM_CONV_ERR; 73f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 74f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 75f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("msg_style is %d", (*msg)->msg_style)) 76f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (compare_message) { 77f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("message is '%s'", compare_message)) 78f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else { 79f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("null message")) 80f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 81f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 82f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 83f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Make the string lowercase. */ 84f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project msg_len = strlen(compare_message); 85f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project for (i = 0; i < msg_len; i++) { 86f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project compare_message[i] = tolower(compare_message[i]); 87f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 88f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 89f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* If the string ends with ": ", remove the space. 90f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ie "login: " vs "login:" */ 91f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (msg_len > 2 92f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project && compare_message[msg_len-2] == ':' 93f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project && compare_message[msg_len-1] == ' ') { 94f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project compare_message[msg_len-1] = '\0'; 95f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 96f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 97f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project switch((*msg)->msg_style) { 98f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 99f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project case PAM_PROMPT_ECHO_OFF: 100f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 101f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (!(strcmp(compare_message, "password:") == 0)) { 102f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* We don't recognise the prompt as asking for a password, 103f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project so can't handle it. Add more above as required for 104f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project different pam modules/implementations */ 105f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_NOTICE, "PAM unknown prompt %s (no echo)", 106f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project compare_message); 107f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project rc = PAM_CONV_ERR; 108f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 109f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 110f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 111f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* You have to read the PAM module-writers' docs (do we look like 112f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * module writers? no.) to find out that the module will 113f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * free the pam_response and its resp element - ie we _must_ malloc 114f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * it here */ 115f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project resp = (struct pam_response*) m_malloc(sizeof(struct pam_response)); 116f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project memset(resp, 0, sizeof(struct pam_response)); 117f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 118f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project resp->resp = m_strdup(userDatap->passwd); 119f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_burn(userDatap->passwd, strlen(userDatap->passwd)); 120f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project (*respp) = resp; 121f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 122f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 123f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 124f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project case PAM_PROMPT_ECHO_ON: 125f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 126f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (!((strcmp(compare_message, "login:" ) == 0) 127f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project || (strcmp(compare_message, "please enter username:") == 0))) { 128f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* We don't recognise the prompt as asking for a username, 129f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project so can't handle it. Add more above as required for 130f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project different pam modules/implementations */ 131f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_NOTICE, "PAM unknown prompt %s (with echo)", 132f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project compare_message); 133f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project rc = PAM_CONV_ERR; 134f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 135f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 136f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 137f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* You have to read the PAM module-writers' docs (do we look like 138f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * module writers? no.) to find out that the module will 139f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * free the pam_response and its resp element - ie we _must_ malloc 140f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * it here */ 141f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project resp = (struct pam_response*) m_malloc(sizeof(struct pam_response)); 142f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project memset(resp, 0, sizeof(struct pam_response)); 143f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 144f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project resp->resp = m_strdup(userDatap->user); 145f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("userDatap->user='%s'", userDatap->user)) 146f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project (*respp) = resp; 147f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 148f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 149f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project default: 150f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("Unknown message type")) 151f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project rc = PAM_CONV_ERR; 152f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 153f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 154f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 155f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(compare_message); 156f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave pamConvFunc, rc %d", rc)) 157f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 158f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return rc; 159f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 160f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 161f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* Process a password auth request, sending success or failure messages as 162f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * appropriate. To the client it looks like it's doing normal password auth (as 163f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * opposed to keyboard-interactive or something), so the pam module has to be 164f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * fairly standard (ie just "what's your username, what's your password, OK"). 165f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 166f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Keyboard interactive would be a lot nicer, but since PAM is synchronous, it 167f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * gets very messy trying to send the interactive challenges, and read the 168f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * interactive responses, over the network. */ 169f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid svr_auth_pam() { 170f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 171f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct UserDataS userData = {NULL, NULL}; 172f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct pam_conv pamConv = { 173f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project pamConvFunc, 174f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project &userData /* submitted to pamvConvFunc as appdata_ptr */ 175f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project }; 176f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 177f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project pam_handle_t* pamHandlep = NULL; 178f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 179f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char * password = NULL; 180f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int passwordlen; 181f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 182f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int rc = PAM_SUCCESS; 183f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char changepw; 184f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 185f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* check if client wants to change password */ 186f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project changepw = buf_getbool(ses.payload); 187f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (changepw) { 188f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* not implemented by this server */ 189f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project send_msg_userauth_failure(0, 1); 190f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto cleanup; 191f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 192f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 193f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project password = buf_getstring(ses.payload, &passwordlen); 194f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 195f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* used to pass data to the PAM conversation function - don't bother with 196f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * strdup() etc since these are touched only by our own conversation 197f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * function (above) which takes care of it */ 198f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project userData.user = ses.authstate.printableuser; 199f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project userData.passwd = password; 200f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 201f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Init pam */ 202f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((rc = pam_start("sshd", NULL, &pamConv, &pamHandlep)) != PAM_SUCCESS) { 203f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_WARNING, "pam_start() failed, rc=%d, %s\n", 204f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project rc, pam_strerror(pamHandlep, rc)); 205f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto cleanup; 206f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 207f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 208f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* just to set it to something */ 209f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((rc = pam_set_item(pamHandlep, PAM_TTY, "ssh") != PAM_SUCCESS)) { 210f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_WARNING, "pam_set_item() failed, rc=%d, %s\n", 211f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project rc, pam_strerror(pamHandlep, rc)); 212f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto cleanup; 213f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 214f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 215f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project (void) pam_fail_delay(pamHandlep, 0 /* musec_delay */); 216f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 217f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* (void) pam_set_item(pamHandlep, PAM_FAIL_DELAY, (void*) pamDelayFunc); */ 218f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 219f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((rc = pam_authenticate(pamHandlep, 0)) != PAM_SUCCESS) { 220f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_WARNING, "pam_authenticate() failed, rc=%d, %s\n", 221f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project rc, pam_strerror(pamHandlep, rc)); 222f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_WARNING, 223f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project "bad PAM password attempt for '%s' from %s", 224f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.printableuser, 225f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project svr_ses.addrstring); 226f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project send_msg_userauth_failure(0, 1); 227f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto cleanup; 228f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 229f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 230f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((rc = pam_acct_mgmt(pamHandlep, 0)) != PAM_SUCCESS) { 231f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_WARNING, "pam_acct_mgmt() failed, rc=%d, %s\n", 232f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project rc, pam_strerror(pamHandlep, rc)); 233f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_WARNING, 234f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project "bad PAM password attempt for '%s' from %s", 235f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.printableuser, 236f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project svr_ses.addrstring); 237f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project send_msg_userauth_failure(0, 1); 238f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto cleanup; 239f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 240f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 241f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* successful authentication */ 242f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_NOTICE, "PAM password auth succeeded for '%s' from %s", 243f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.authstate.printableuser, 244f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project svr_ses.addrstring); 245f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project send_msg_userauth_success(); 246f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 247f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectcleanup: 248f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (password != NULL) { 249f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_burn(password, passwordlen); 250f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(password); 251f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 252f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (pamHandlep != NULL) { 253f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("pam_end")) 254f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project (void) pam_end(pamHandlep, 0 /* pam_status */); 255f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 256f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 257f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 258f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif /* ENABLE_SVR_PAM_AUTH */ 259