diff options
Diffstat (limited to 'crypto/kerberosIV/lib/auth/pam/pam.c')
| -rw-r--r-- | crypto/kerberosIV/lib/auth/pam/pam.c | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/crypto/kerberosIV/lib/auth/pam/pam.c b/crypto/kerberosIV/lib/auth/pam/pam.c deleted file mode 100644 index d919bf8f83b8..000000000000 --- a/crypto/kerberosIV/lib/auth/pam/pam.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan - * (Royal Institute of Technology, Stockholm, Sweden). - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * 3. Neither the name of the Institute nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -/* This code is extremely ugly, and would probably be better off - beeing completely rewritten */ - - -#ifdef HAVE_CONFIG_H -#include<config.h> -RCSID("$Id: pam.c,v 1.22 1999/12/02 16:58:37 joda Exp $"); -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <pwd.h> -#include <unistd.h> -#include <sys/types.h> - -#define PAM_SM_AUTH -#define PAM_SM_SESSION -#include <security/pam_appl.h> -#include <security/pam_modules.h> - -#include <netinet/in.h> -#include <krb.h> -#include <kafs.h> - -static int -cleanup(pam_handle_t *pamh, void *data, int error_code) -{ - if(error_code != PAM_SUCCESS) - dest_tkt(); - free(data); - return PAM_SUCCESS; -} - -static int -doit(pam_handle_t *pamh, char *name, char *inst, char *pwd, char *tkt) -{ - char realm[REALM_SZ]; - int ret; - - pam_set_data(pamh, "KRBTKFILE", strdup(tkt), cleanup); - krb_set_tkt_string(tkt); - - krb_get_lrealm(realm, 1); - ret = krb_verify_user(name, inst, realm, pwd, KRB_VERIFY_SECURE, NULL); - memset(pwd, 0, strlen(pwd)); - switch(ret){ - case KSUCCESS: - return PAM_SUCCESS; - case KDC_PR_UNKNOWN: - return PAM_USER_UNKNOWN; - case SKDC_CANT: - case SKDC_RETRY: - case RD_AP_TIME: - return PAM_AUTHINFO_UNAVAIL; - default: - return PAM_AUTH_ERR; - } -} - -static int -auth_login(pam_handle_t *pamh, int flags, char *user, struct pam_conv *conv) -{ - int ret; - struct pam_message msg, *pmsg; - struct pam_response *resp; - char prompt[128]; - - pmsg = &msg; - msg.msg_style = PAM_PROMPT_ECHO_OFF; - snprintf(prompt, sizeof(prompt), "%s's Password: ", user); - msg.msg = prompt; - - ret = conv->conv(1, (const struct pam_message**)&pmsg, - &resp, conv->appdata_ptr); - if(ret != PAM_SUCCESS) - return ret; - - { - char tkt[1024]; - struct passwd *pw = getpwnam(user); - - if(pw){ - snprintf(tkt, sizeof(tkt), - "%s%u", TKT_ROOT, (unsigned)pw->pw_uid); - ret = doit(pamh, user, "", resp->resp, tkt); - if(ret == PAM_SUCCESS) - chown(tkt, pw->pw_uid, pw->pw_gid); - }else - ret = PAM_USER_UNKNOWN; - memset(resp->resp, 0, strlen(resp->resp)); - free(resp->resp); - free(resp); - } - return ret; -} - -static int -auth_su(pam_handle_t *pamh, int flags, char *user, struct pam_conv *conv) -{ - int ret; - struct passwd *pw; - struct pam_message msg, *pmsg; - struct pam_response *resp; - char prompt[128]; - krb_principal pr; - - pr.realm[0] = 0; - ret = pam_get_user(pamh, &user, "login: "); - if(ret != PAM_SUCCESS) - return ret; - - pw = getpwuid(getuid()); - if(strcmp(user, "root") == 0){ - strlcpy(pr.name, pw->pw_name, sizeof(pr.name)); - strlcpy(pr.instance, "root", sizeof(pr.instance)); - }else{ - strlcpy(pr.name, user, sizeof(pr.name)); - pr.instance[0] = 0; - } - pmsg = &msg; - msg.msg_style = PAM_PROMPT_ECHO_OFF; - snprintf(prompt, sizeof(prompt), "%s's Password: ", krb_unparse_name(&pr)); - msg.msg = prompt; - - ret = conv->conv(1, (const struct pam_message**)&pmsg, - &resp, conv->appdata_ptr); - if(ret != PAM_SUCCESS) - return ret; - - { - char tkt[1024]; - - snprintf(tkt, sizeof(tkt),"%s_%s_to_%s", - TKT_ROOT, pw->pw_name, user); - ret = doit(pamh, pr.name, pr.instance, resp->resp, tkt); - if(ret == PAM_SUCCESS) - chown(tkt, pw->pw_uid, pw->pw_gid); - memset(resp->resp, 0, strlen(resp->resp)); - free(resp->resp); - free(resp); - } - return ret; -} - -int -pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc, const char **argv) -{ - char *user; - int ret; - struct pam_conv *conv; - ret = pam_get_user(pamh, &user, "login: "); - if(ret != PAM_SUCCESS) - return ret; - - ret = pam_get_item(pamh, PAM_CONV, (void*)&conv); - if(ret != PAM_SUCCESS) - return ret; - - - if(getuid() != geteuid()) - return auth_su(pamh, flags, user, conv); - else - return auth_login(pamh, flags, user, conv); -} - -int -pam_sm_setcred(pam_handle_t *pamh, int flags, int argc, const char **argv) -{ - return PAM_SUCCESS; -} - - -int -pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, const char **argv) -{ - char *tkt, *var; - void *user; - const char *homedir = NULL; - - if(pam_get_item (pamh, PAM_USER, &user) == PAM_SUCCESS) { - struct passwd *pwd; - - pwd = getpwnam ((char *)user); - if (pwd != NULL) - homedir = pwd->pw_dir; - } - - pam_get_data(pamh, "KRBTKFILE", (const void**)&tkt); - var = malloc(strlen("KRBTKFILE=") + strlen(tkt) + 1); - strcpy(var, "KRBTKFILE="); - strcat(var, tkt); - putenv(var); - pam_putenv(pamh, var); - if(k_hasafs()){ - k_setpag(); - krb_afslog_home(0, 0, homedir); - } - return PAM_SUCCESS; -} - - -int -pam_sm_close_session(pam_handle_t *pamh, int flags, int argc, const char **argv) -{ - dest_tkt(); - if(k_hasafs()) - k_unlog(); - return PAM_SUCCESS; -} |