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r10596: Move the credentials code into it's own subsystem, and push it under auth/

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Andrew Bartlett
(This used to be commit 2e76a4b8efd59c496d64241d654538d3222545c6)
This commit is contained in:
Andrew Bartlett 2005-09-29 00:02:38 +00:00 committed by Gerald (Jerry) Carter
parent e6fbd02b90
commit a12a6686ba
5 changed files with 545 additions and 489 deletions
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489
source4/lib/credentials.c → source4/auth/credentials/credentials.c
View File

@ -1,6 +1,8 @@
/*
Unix SMB/CIFS implementation.
User credentials handling
Copyright (C) Jelmer Vernooij 2005
Copyright (C) Tim Potter 2001
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
@ -21,12 +23,8 @@
*/
#include "includes.h"
#include "system/filesys.h"
#include "include/secrets.h"
#include "lib/ldb/include/ldb.h"
#include "librpc/gen_ndr/ndr_samr.h" /* for struct samrPassword */
#include "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
/**
@ -249,207 +247,6 @@ BOOL cli_credentials_set_nt_hash(struct cli_credentials *cred,
return False;
}
int cli_credentials_set_from_ccache(struct cli_credentials *cred,
enum credentials_obtained obtained)
{
krb5_principal princ;
krb5_error_code ret;
char *name;
char **realm;
ret = krb5_cc_get_principal(cred->ccache->smb_krb5_context->krb5_context,
cred->ccache->ccache, &princ);
if (ret) {
char *err_mess = smb_get_krb5_error_message(cred->ccache->smb_krb5_context->krb5_context, ret, cred);
DEBUG(1,("failed to get principal from ccache: %s\n",
err_mess));
talloc_free(err_mess);
return ret;
}
ret = krb5_unparse_name(cred->ccache->smb_krb5_context->krb5_context, princ, &name);
if (ret) {
char *err_mess = smb_get_krb5_error_message(cred->ccache->smb_krb5_context->krb5_context, ret, cred);
DEBUG(1,("failed to unparse principal from ccache: %s\n",
err_mess));
talloc_free(err_mess);
return ret;
}
realm = krb5_princ_realm(cred->ccache->smb_krb5_context->krb5_context, princ);
cli_credentials_set_principal(cred, name, obtained);
free(name);
krb5_free_principal(cred->ccache->smb_krb5_context->krb5_context, princ);
cred->ccache_obtained = obtained;
return 0;
}
static int free_mccache(void *ptr) {
struct ccache_container *ccc = ptr;
krb5_cc_destroy(ccc->smb_krb5_context->krb5_context, ccc->ccache);
return 0;
}
static int free_dccache(void *ptr) {
struct ccache_container *ccc = ptr;
krb5_cc_close(ccc->smb_krb5_context->krb5_context, ccc->ccache);
return 0;
}
static int cli_credentials_set_ccache(struct cli_credentials *cred,
const char *name,
enum credentials_obtained obtained)
{
krb5_error_code ret;
krb5_principal princ;
struct ccache_container *ccc = talloc(cred, struct ccache_container);
if (!ccc) {
return ENOMEM;
}
ret = smb_krb5_init_context(ccc, &ccc->smb_krb5_context);
if (ret) {
talloc_free(ccc);
return ret;
}
if (name) {
ret = krb5_cc_resolve(ccc->smb_krb5_context->krb5_context, name, &ccc->ccache);
if (ret) {
DEBUG(1,("failed to read krb5 ccache: %s: %s\n",
name,
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccc);
return ret;
}
} else {
ret = krb5_cc_default(ccc->smb_krb5_context->krb5_context, &ccc->ccache);
if (ret) {
DEBUG(3,("failed to read default krb5 ccache: %s\n",
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccc);
return ret;
}
}
talloc_set_destructor(ccc, free_dccache);
ret = krb5_cc_get_principal(ccc->smb_krb5_context->krb5_context, ccc->ccache, &princ);
if (ret) {
DEBUG(3,("failed to get principal from default ccache: %s\n",
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccc);
return ret;
}
krb5_free_principal(ccc->smb_krb5_context->krb5_context, princ);
cred->ccache = ccc;
talloc_steal(cred, ccc);
ret = cli_credentials_set_from_ccache(cred, obtained);
if (ret) {
return ret;
}
return 0;
}
int cli_credentials_new_ccache(struct cli_credentials *cred)
{
krb5_error_code ret;
char *rand_string;
struct ccache_container *ccc = talloc(cred, struct ccache_container);
char *ccache_name;
if (!ccc) {
return ENOMEM;
}
rand_string = generate_random_str(NULL, 16);
if (!rand_string) {
talloc_free(ccc);
return ENOMEM;
}
ccache_name = talloc_asprintf(ccc, "MEMORY:%s",
rand_string);
talloc_free(rand_string);
if (!ccache_name) {
talloc_free(ccc);
return ENOMEM;
}
ret = smb_krb5_init_context(ccc, &ccc->smb_krb5_context);
if (ret) {
talloc_free(ccache_name);
talloc_free(ccc);
return ret;
}
ret = krb5_cc_resolve(ccc->smb_krb5_context->krb5_context, ccache_name, &ccc->ccache);
if (ret) {
DEBUG(1,("failed to generate a new krb5 ccache (%s): %s\n",
ccache_name,
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccache_name);
talloc_free(ccc);
return ret;
}
talloc_set_destructor(ccc, free_mccache);
cred->ccache = ccc;
talloc_steal(cred, ccc);
talloc_free(ccache_name);
return ret;
}
int cli_credentials_get_ccache(struct cli_credentials *cred,
struct ccache_container **ccc)
{
krb5_error_code ret;
if (cred->ccache_obtained >= (MAX(cred->principal_obtained,
cred->username_obtained))) {
*ccc = cred->ccache;
return 0;
}
if (cli_credentials_is_anonymous(cred)) {
return EINVAL;
}
ret = cli_credentials_new_ccache(cred);
if (ret) {
return ret;
}
ret = kinit_to_ccache(cred, cred, cred->ccache->smb_krb5_context, cred->ccache->ccache);
if (ret) {
return ret;
}
ret = cli_credentials_set_from_ccache(cred, cred->principal_obtained);
if (ret) {
return ret;
}
*ccc = cred->ccache;
return ret;
}
/**
* Obtain the 'short' or 'NetBIOS' domain for this credentials context.
* @param cred credentials context
@ -600,136 +397,6 @@ BOOL cli_credentials_set_workstation_callback(struct cli_credentials *cred,
return False;
}
/**
* Read a file descriptor, and parse it for a password (eg from a file or stdin)
*
* @param credentials Credentials structure on which to set the password
* @param fd open file descriptor to read the password from
* @param obtained This enum describes how 'specified' this password is
*/
BOOL cli_credentials_parse_password_fd(struct cli_credentials *credentials,
int fd, enum credentials_obtained obtained)
{
char *p;
char pass[128];
for(p = pass, *p = '\0'; /* ensure that pass is null-terminated */
p && p - pass < sizeof(pass);) {
switch (read(fd, p, 1)) {
case 1:
if (*p != '\n' && *p != '\0') {
*++p = '\0'; /* advance p, and null-terminate pass */
break;
}
case 0:
if (p - pass) {
*p = '\0'; /* null-terminate it, just in case... */
p = NULL; /* then force the loop condition to become false */
break;
} else {
fprintf(stderr, "Error reading password from file descriptor %d: %s\n", fd, "empty password\n");
return False;
}
default:
fprintf(stderr, "Error reading password from file descriptor %d: %s\n",
fd, strerror(errno));
return False;
}
}
cli_credentials_set_password(credentials, pass, obtained);
return True;
}
/**
* Read a named file, and parse it for a password
*
* @param credentials Credentials structure on which to set the password
* @param file a named file to read the password from
* @param obtained This enum describes how 'specified' this password is
*/
BOOL cli_credentials_parse_password_file(struct cli_credentials *credentials, const char *file, enum credentials_obtained obtained)
{
int fd = open(file, O_RDONLY, 0);
BOOL ret;
if (fd < 0) {
fprintf(stderr, "Error opening PASSWD_FILE %s: %s\n",
file, strerror(errno));
return False;
}
ret = cli_credentials_parse_password_fd(credentials, fd, obtained);
close(fd);
return ret;
}
/**
* Read a named file, and parse it for username, domain, realm and password
*
* @param credentials Credentials structure on which to set the password
* @param file a named file to read the details from
* @param obtained This enum describes how 'specified' this password is
*/
BOOL cli_credentials_parse_file(struct cli_credentials *cred, const char *file, enum credentials_obtained obtained)
{
uint16_t len = 0;
char *ptr, *val, *param;
char **lines;
int i, numlines;
lines = file_lines_load(file, &numlines, NULL);
if (lines == NULL)
{
/* fail if we can't open the credentials file */
d_printf("ERROR: Unable to open credentials file!\n");
return False;
}
for (i = 0; i < numlines; i++) {
len = strlen(lines[i]);
if (len == 0)
continue;
/* break up the line into parameter & value.
* will need to eat a little whitespace possibly */
param = lines[i];
if (!(ptr = strchr_m (lines[i], '=')))
continue;
val = ptr+1;
*ptr = '\0';
/* eat leading white space */
while ((*val!='\0') && ((*val==' ') || (*val=='\t')))
val++;
if (strwicmp("password", param) == 0) {
cli_credentials_set_password(cred, val, obtained);
} else if (strwicmp("username", param) == 0) {
cli_credentials_set_username(cred, val, obtained);
} else if (strwicmp("domain", param) == 0) {
cli_credentials_set_domain(cred, val, obtained);
} else if (strwicmp("realm", param) == 0) {
cli_credentials_set_realm(cred, val, obtained);
}
memset(lines[i], 0, len);
}
talloc_free(lines);
return True;
}
/**
* Given a string, typically obtained from a -U argument, parse it into domain, username, realm and password fields
*
@ -824,139 +491,6 @@ void cli_credentials_guess(struct cli_credentials *cred)
cli_credentials_set_ccache(cred, NULL, CRED_GUESS_FILE);
}
/**
* Fill in credentials for the machine trust account, from the secrets database.
*
* @param cred Credentials structure to fill in
* @retval NTSTATUS error detailing any failure
*/
NTSTATUS cli_credentials_set_machine_account(struct cli_credentials *cred)
{
TALLOC_CTX *mem_ctx;
struct ldb_context *ldb;
int ldb_ret;
struct ldb_message **msgs;
const char *attrs[] = {
"secret",
"samAccountName",
"flatname",
"realm",
"secureChannelType",
"ntPwdHash",
"msDS-KeyVersionNumber",
NULL
};
const char *machine_account;
const char *password;
const char *domain;
const char *realm;
enum netr_SchannelType sct;
/* ok, we are going to get it now, don't recurse back here */
cred->machine_account_pending = False;
mem_ctx = talloc_named(cred, 0, "cli_credentials fetch machine password");
/* Local secrets are stored in secrets.ldb */
ldb = secrets_db_connect(mem_ctx);
if (!ldb) {
DEBUG(1, ("Could not open secrets.ldb\n"));
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
/* search for the secret record */
ldb_ret = gendb_search(ldb,
mem_ctx, ldb_dn_explode(mem_ctx, SECRETS_PRIMARY_DOMAIN_DN),
&msgs, attrs,
SECRETS_PRIMARY_DOMAIN_FILTER,
cli_credentials_get_domain(cred));
if (ldb_ret == 0) {
DEBUG(1, ("Could not find join record to domain: %s\n",
cli_credentials_get_domain(cred)));
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
} else if (ldb_ret != 1) {
DEBUG(1, ("Found more than one (%d) join records to domain: %s\n",
ldb_ret, cli_credentials_get_domain(cred)));
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
password = ldb_msg_find_string(msgs[0], "secret", NULL);
machine_account = ldb_msg_find_string(msgs[0], "samAccountName", NULL);
if (!machine_account) {
DEBUG(1, ("Could not find 'samAccountName' in join record to domain: %s\n",
cli_credentials_get_domain(cred)));
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
sct = ldb_msg_find_int(msgs[0], "secureChannelType", 0);
if (!sct) {
DEBUG(1, ("Domain join for acocunt %s did not have a secureChannelType set!\n",
machine_account));
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
if (!password) {
const struct ldb_val *nt_password_hash = ldb_msg_find_ldb_val(msgs[0], "ntPwdHash");
struct samr_Password hash;
ZERO_STRUCT(hash);
if (nt_password_hash) {
memcpy(hash.hash, nt_password_hash->data,
MIN(nt_password_hash->length, sizeof(hash.hash)));
cli_credentials_set_nt_hash(cred, &hash, CRED_SPECIFIED);
} else {
DEBUG(1, ("Could not find 'secret' in join record to domain: %s\n",
cli_credentials_get_domain(cred)));
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
}
cli_credentials_set_secure_channel_type(cred, sct);
domain = ldb_msg_find_string(msgs[0], "flatname", NULL);
if (domain) {
cli_credentials_set_domain(cred, domain, CRED_SPECIFIED);
}
realm = ldb_msg_find_string(msgs[0], "realm", NULL);
if (realm) {
cli_credentials_set_realm(cred, realm, CRED_SPECIFIED);
}
cli_credentials_set_username(cred, machine_account, CRED_SPECIFIED);
if (password) {
cli_credentials_set_password(cred, password, CRED_SPECIFIED);
}
cli_credentials_set_kvno(cred, ldb_msg_find_int(msgs[0], "msDS-KeyVersionNumber", 0));
talloc_free(mem_ctx);
return NT_STATUS_OK;
}
/**
* Ask that when required, the credentials system will be filled with
* machine trust account, from the secrets database.
*
* @param cred Credentials structure to fill in
* @note This function is used to call the above function after, rather
* than during, popt processing.
*
*/
void cli_credentials_set_machine_account_pending(struct cli_credentials *cred)
{
cred->machine_account_pending = True;
}
/**
* Attach NETLOGON credentials for use with SCHANNEL
*/
@ -995,25 +529,6 @@ enum netr_SchannelType cli_credentials_get_secure_channel_type(struct cli_creden
return cred->secure_channel_type;
}
/**
* Set Kerberos KVNO
*/
void cli_credentials_set_kvno(struct cli_credentials *cred,
int kvno)
{
cred->kvno = kvno;
}
/**
* Return Kerberos KVNO
*/
int cli_credentials_get_kvno(struct cli_credentials *cred)
{
return cred->kvno;
}
/**
* Fill in a credentials structure as the anonymous user
*/

293
source4/auth/credentials/credentials_files.c Normal file
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@ -0,0 +1,293 @@
/*
Unix SMB/CIFS implementation.
User credentials handling (as regards on-disk files)
Copyright (C) Jelmer Vernooij 2005
Copyright (C) Tim Potter 2001
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "lib/ldb/include/ldb.h"
#include "librpc/gen_ndr/ndr_samr.h" /* for struct samrPassword */
#include "include/secrets.h"
#include "system/filesys.h"
/**
* Read a file descriptor, and parse it for a password (eg from a file or stdin)
*
* @param credentials Credentials structure on which to set the password
* @param fd open file descriptor to read the password from
* @param obtained This enum describes how 'specified' this password is
*/
BOOL cli_credentials_parse_password_fd(struct cli_credentials *credentials,
int fd, enum credentials_obtained obtained)
{
char *p;
char pass[128];
for(p = pass, *p = '\0'; /* ensure that pass is null-terminated */
p && p - pass < sizeof(pass);) {
switch (read(fd, p, 1)) {
case 1:
if (*p != '\n' && *p != '\0') {
*++p = '\0'; /* advance p, and null-terminate pass */
break;
}
case 0:
if (p - pass) {
*p = '\0'; /* null-terminate it, just in case... */
p = NULL; /* then force the loop condition to become false */
break;
} else {
fprintf(stderr, "Error reading password from file descriptor %d: %s\n", fd, "empty password\n");
return False;
}
default:
fprintf(stderr, "Error reading password from file descriptor %d: %s\n",
fd, strerror(errno));
return False;
}
}
cli_credentials_set_password(credentials, pass, obtained);
return True;
}
/**
* Read a named file, and parse it for a password
*
* @param credentials Credentials structure on which to set the password
* @param file a named file to read the password from
* @param obtained This enum describes how 'specified' this password is
*/
BOOL cli_credentials_parse_password_file(struct cli_credentials *credentials, const char *file, enum credentials_obtained obtained)
{
int fd = open(file, O_RDONLY, 0);
BOOL ret;
if (fd < 0) {
fprintf(stderr, "Error opening PASSWD_FILE %s: %s\n",
file, strerror(errno));
return False;
}
ret = cli_credentials_parse_password_fd(credentials, fd, obtained);
close(fd);
return ret;
}
/**
* Read a named file, and parse it for username, domain, realm and password
*
* @param credentials Credentials structure on which to set the password
* @param file a named file to read the details from
* @param obtained This enum describes how 'specified' this password is
*/
BOOL cli_credentials_parse_file(struct cli_credentials *cred, const char *file, enum credentials_obtained obtained)
{
uint16_t len = 0;
char *ptr, *val, *param;
char **lines;
int i, numlines;
lines = file_lines_load(file, &numlines, NULL);
if (lines == NULL)
{
/* fail if we can't open the credentials file */
d_printf("ERROR: Unable to open credentials file!\n");
return False;
}
for (i = 0; i < numlines; i++) {
len = strlen(lines[i]);
if (len == 0)
continue;
/* break up the line into parameter & value.
* will need to eat a little whitespace possibly */
param = lines[i];
if (!(ptr = strchr_m (lines[i], '=')))
continue;
val = ptr+1;
*ptr = '\0';
/* eat leading white space */
while ((*val!='\0') && ((*val==' ') || (*val=='\t')))
val++;
if (strwicmp("password", param) == 0) {
cli_credentials_set_password(cred, val, obtained);
} else if (strwicmp("username", param) == 0) {
cli_credentials_set_username(cred, val, obtained);
} else if (strwicmp("domain", param) == 0) {
cli_credentials_set_domain(cred, val, obtained);
} else if (strwicmp("realm", param) == 0) {
cli_credentials_set_realm(cred, val, obtained);
}
memset(lines[i], 0, len);
}
talloc_free(lines);
return True;
}
/**
* Fill in credentials for the machine trust account, from the secrets database.
*
* @param cred Credentials structure to fill in
* @retval NTSTATUS error detailing any failure
*/
NTSTATUS cli_credentials_set_machine_account(struct cli_credentials *cred)
{
TALLOC_CTX *mem_ctx;
struct ldb_context *ldb;
int ldb_ret;
struct ldb_message **msgs;
const char *attrs[] = {
"secret",
"samAccountName",
"flatname",
"realm",
"secureChannelType",
"ntPwdHash",
"msDS-KeyVersionNumber",
NULL
};
const char *machine_account;
const char *password;
const char *domain;
const char *realm;
enum netr_SchannelType sct;
/* ok, we are going to get it now, don't recurse back here */
cred->machine_account_pending = False;
mem_ctx = talloc_named(cred, 0, "cli_credentials fetch machine password");
/* Local secrets are stored in secrets.ldb */
ldb = secrets_db_connect(mem_ctx);
if (!ldb) {
DEBUG(1, ("Could not open secrets.ldb\n"));
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
/* search for the secret record */
ldb_ret = gendb_search(ldb,
mem_ctx, ldb_dn_explode(mem_ctx, SECRETS_PRIMARY_DOMAIN_DN),
&msgs, attrs,
SECRETS_PRIMARY_DOMAIN_FILTER,
cli_credentials_get_domain(cred));
if (ldb_ret == 0) {
DEBUG(1, ("Could not find join record to domain: %s\n",
cli_credentials_get_domain(cred)));
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
} else if (ldb_ret != 1) {
DEBUG(1, ("Found more than one (%d) join records to domain: %s\n",
ldb_ret, cli_credentials_get_domain(cred)));
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
password = ldb_msg_find_string(msgs[0], "secret", NULL);
machine_account = ldb_msg_find_string(msgs[0], "samAccountName", NULL);
if (!machine_account) {
DEBUG(1, ("Could not find 'samAccountName' in join record to domain: %s\n",
cli_credentials_get_domain(cred)));
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
sct = ldb_msg_find_int(msgs[0], "secureChannelType", 0);
if (!sct) {
DEBUG(1, ("Domain join for acocunt %s did not have a secureChannelType set!\n",
machine_account));
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
if (!password) {
const struct ldb_val *nt_password_hash = ldb_msg_find_ldb_val(msgs[0], "ntPwdHash");
struct samr_Password hash;
ZERO_STRUCT(hash);
if (nt_password_hash) {
memcpy(hash.hash, nt_password_hash->data,
MIN(nt_password_hash->length, sizeof(hash.hash)));
cli_credentials_set_nt_hash(cred, &hash, CRED_SPECIFIED);
} else {
DEBUG(1, ("Could not find 'secret' in join record to domain: %s\n",
cli_credentials_get_domain(cred)));
talloc_free(mem_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
}
cli_credentials_set_secure_channel_type(cred, sct);
domain = ldb_msg_find_string(msgs[0], "flatname", NULL);
if (domain) {
cli_credentials_set_domain(cred, domain, CRED_SPECIFIED);
}
realm = ldb_msg_find_string(msgs[0], "realm", NULL);
if (realm) {
cli_credentials_set_realm(cred, realm, CRED_SPECIFIED);
}
cli_credentials_set_username(cred, machine_account, CRED_SPECIFIED);
if (password) {
cli_credentials_set_password(cred, password, CRED_SPECIFIED);
}
cli_credentials_set_kvno(cred, ldb_msg_find_int(msgs[0], "msDS-KeyVersionNumber", 0));
talloc_free(mem_ctx);
return NT_STATUS_OK;
}
/**
* Ask that when required, the credentials system will be filled with
* machine trust account, from the secrets database.
*
* @param cred Credentials structure to fill in
* @note This function is used to call the above function after, rather
* than during, popt processing.
*
*/
void cli_credentials_set_machine_account_pending(struct cli_credentials *cred)
{
cred->machine_account_pending = True;
}

248
source4/auth/credentials/credentials_krb5.c Normal file
View File

@ -0,0 +1,248 @@
/*
Unix SMB/CIFS implementation.
Handle user credentials (as regards krb5)
Copyright (C) Jelmer Vernooij 2005
Copyright (C) Tim Potter 2001
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
int cli_credentials_set_from_ccache(struct cli_credentials *cred,
enum credentials_obtained obtained)
{
krb5_principal princ;
krb5_error_code ret;
char *name;
char **realm;
ret = krb5_cc_get_principal(cred->ccache->smb_krb5_context->krb5_context,
cred->ccache->ccache, &princ);
if (ret) {
char *err_mess = smb_get_krb5_error_message(cred->ccache->smb_krb5_context->krb5_context, ret, cred);
DEBUG(1,("failed to get principal from ccache: %s\n",
err_mess));
talloc_free(err_mess);
return ret;
}
ret = krb5_unparse_name(cred->ccache->smb_krb5_context->krb5_context, princ, &name);
if (ret) {
char *err_mess = smb_get_krb5_error_message(cred->ccache->smb_krb5_context->krb5_context, ret, cred);
DEBUG(1,("failed to unparse principal from ccache: %s\n",
err_mess));
talloc_free(err_mess);
return ret;
}
realm = krb5_princ_realm(cred->ccache->smb_krb5_context->krb5_context, princ);
cli_credentials_set_principal(cred, name, obtained);
free(name);
krb5_free_principal(cred->ccache->smb_krb5_context->krb5_context, princ);
cred->ccache_obtained = obtained;
return 0;
}
static int free_mccache(void *ptr) {
struct ccache_container *ccc = ptr;
krb5_cc_destroy(ccc->smb_krb5_context->krb5_context, ccc->ccache);
return 0;
}
static int free_dccache(void *ptr) {
struct ccache_container *ccc = ptr;
krb5_cc_close(ccc->smb_krb5_context->krb5_context, ccc->ccache);
return 0;
}
int cli_credentials_set_ccache(struct cli_credentials *cred,
const char *name,
enum credentials_obtained obtained)
{
krb5_error_code ret;
krb5_principal princ;
struct ccache_container *ccc = talloc(cred, struct ccache_container);
if (!ccc) {
return ENOMEM;
}
ret = smb_krb5_init_context(ccc, &ccc->smb_krb5_context);
if (ret) {
talloc_free(ccc);
return ret;
}
if (name) {
ret = krb5_cc_resolve(ccc->smb_krb5_context->krb5_context, name, &ccc->ccache);
if (ret) {
DEBUG(1,("failed to read krb5 ccache: %s: %s\n",
name,
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccc);
return ret;
}
} else {
ret = krb5_cc_default(ccc->smb_krb5_context->krb5_context, &ccc->ccache);
if (ret) {
DEBUG(3,("failed to read default krb5 ccache: %s\n",
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccc);
return ret;
}
}
talloc_set_destructor(ccc, free_dccache);
ret = krb5_cc_get_principal(ccc->smb_krb5_context->krb5_context, ccc->ccache, &princ);
if (ret) {
DEBUG(3,("failed to get principal from default ccache: %s\n",
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccc);
return ret;
}
krb5_free_principal(ccc->smb_krb5_context->krb5_context, princ);
cred->ccache = ccc;
talloc_steal(cred, ccc);
ret = cli_credentials_set_from_ccache(cred, obtained);
if (ret) {
return ret;
}
return 0;
}
int cli_credentials_new_ccache(struct cli_credentials *cred)
{
krb5_error_code ret;
char *rand_string;
struct ccache_container *ccc = talloc(cred, struct ccache_container);
char *ccache_name;
if (!ccc) {
return ENOMEM;
}
rand_string = generate_random_str(NULL, 16);
if (!rand_string) {
talloc_free(ccc);
return ENOMEM;
}
ccache_name = talloc_asprintf(ccc, "MEMORY:%s",
rand_string);
talloc_free(rand_string);
if (!ccache_name) {
talloc_free(ccc);
return ENOMEM;
}
ret = smb_krb5_init_context(ccc, &ccc->smb_krb5_context);
if (ret) {
talloc_free(ccache_name);
talloc_free(ccc);
return ret;
}
ret = krb5_cc_resolve(ccc->smb_krb5_context->krb5_context, ccache_name, &ccc->ccache);
if (ret) {
DEBUG(1,("failed to generate a new krb5 ccache (%s): %s\n",
ccache_name,
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccache_name);
talloc_free(ccc);
return ret;
}
talloc_set_destructor(ccc, free_mccache);
cred->ccache = ccc;
talloc_steal(cred, ccc);
talloc_free(ccache_name);
return ret;
}
int cli_credentials_get_ccache(struct cli_credentials *cred,
struct ccache_container **ccc)
{
krb5_error_code ret;
if (cred->ccache_obtained >= (MAX(cred->principal_obtained,
cred->username_obtained))) {
*ccc = cred->ccache;
return 0;
}
if (cli_credentials_is_anonymous(cred)) {
return EINVAL;
}
ret = cli_credentials_new_ccache(cred);
if (ret) {
return ret;
}
ret = kinit_to_ccache(cred, cred, cred->ccache->smb_krb5_context, cred->ccache->ccache);
if (ret) {
return ret;
}
ret = cli_credentials_set_from_ccache(cred, cred->principal_obtained);
if (ret) {
return ret;
}
*ccc = cred->ccache;
return ret;
}
/**
* Set Kerberos KVNO
*/
void cli_credentials_set_kvno(struct cli_credentials *cred,
int kvno)
{
cred->kvno = kvno;
}
/**
* Return Kerberos KVNO
*/
int cli_credentials_get_kvno(struct cli_credentials *cred)
{
return cred->kvno;
}

3
source4/lib/basic.mk
View File

@ -66,8 +66,7 @@ ADD_OBJ_FILES = \
lib/mutex.o \
lib/idtree.o \
lib/db_wrap.o \
lib/gendb.o \
lib/credentials.o
lib/gendb.o
REQUIRED_SUBSYSTEMS = \
LIBLDB CHARSET LIBREPLACE LIBNETIF LIBCRYPTO EXT_LIB_DL LIBTALLOC \
SOCKET_WRAPPER CONFIG

1
source4/lib/cmdline/config.mk
View File

@ -3,5 +3,6 @@
[SUBSYSTEM::LIBCMDLINE_CREDENTIALS]
ADD_OBJ_FILES = lib/cmdline/getsmbpass.o \
lib/cmdline/credentials.o
REQUIRED_SUBSYSTEMS = CREDENTIALS
# End SUBSYSTEM LIBCMDLINE_CREDENTIALS
##############################