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OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/pam?expand=0&rev=16

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OBS User unknown 2008-08-29 23:16:13 +00:00 committed by Git OBS Bridge
parent 899875f86b
commit 513de029ac
13 changed files with 5020 additions and 10 deletions
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3
Linux-PAM-1.0.1-docs.tar.bz2
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Linux-PAM-1.0.1.tar.bz2
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Linux-PAM-1.0.2-SUSE-docs.tar.bz2 Normal file
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3
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pam-1.0.0-selinux-env-params.patch Normal file
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Index: modules/pam_selinux/pam_selinux.8.xml
===================================================================
RCS file: /cvsroot/pam/Linux-PAM/modules/pam_selinux/pam_selinux.8.xml,v
retrieving revision 1.2
diff -u -p -r1.2 pam_selinux.8.xml
--- modules/pam_selinux/pam_selinux.8.xml 15 Jun 2007 10:17:22 -0000 1.2
+++ modules/pam_selinux/pam_selinux.8.xml 19 May 2008 15:44:08 -0000
@@ -37,6 +37,9 @@
select_context
</arg>
<arg choice="opt">
+ env_params
+ </arg>
+ <arg choice="opt">
use_current_range
</arg>
</cmdsynopsis>
@@ -137,12 +140,30 @@
</varlistentry>
<varlistentry>
<term>
+ <option>env_params</option>
+ </term>
+ <listitem>
+ <para>
+ Attempt to obtain a custom security context role from PAM environment.
+ If MLS is on obtain also sensitivity level. This option and the
+ select_context option are mutually exclusive. The respective PAM
+ environment variables are <emphasis>SELINUX_ROLE_REQUESTED</emphasis>,
+ <emphasis>SELINUX_LEVEL_REQUESTED</emphasis>, and
+ <emphasis>SELINUX_USE_CURRENT_RANGE</emphasis>. The first two variables
+ are self describing and the last one if set to 1 makes the PAM module behave as
+ if the use_current_range was specified on the command line of the module.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
<option>use_current_range</option>
</term>
<listitem>
<para>
- Use the sensitivity range of the process for the user context.
- This option and the select_context option are mutually exclusive.
+ Use the sensitivity level of the current process for the user context
+ instead of the default level. Also supresses asking of the
+ sensitivity level from the user or obtaining it from PAM environment.
</para>
</listitem>
</varlistentry>
Index: modules/pam_selinux/pam_selinux.c
===================================================================
RCS file: /cvsroot/pam/Linux-PAM/modules/pam_selinux/pam_selinux.c,v
retrieving revision 1.16
diff -u -p -r1.16 pam_selinux.c
--- modules/pam_selinux/pam_selinux.c 22 Apr 2008 19:21:37 -0000 1.16
+++ modules/pam_selinux/pam_selinux.c 19 May 2008 15:44:08 -0000
@@ -2,8 +2,9 @@
* A module for Linux-PAM that will set the default security context after login
* via PAM.
*
- * Copyright (c) 2003 Red Hat, Inc.
+ * Copyright (c) 2003-2008 Red Hat, Inc.
* Written by Dan Walsh <dwalsh@redhat.com>
+ * Additional improvements by Tomas Mraz <tmraz@redhat.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -138,15 +139,22 @@ send_text (pam_handle_t *pamh, const cha
*/
static int
query_response (pam_handle_t *pamh, const char *text, const char *def,
- char **responses, int debug)
+ char **response, int debug)
{
int rc;
if (def)
- rc = pam_prompt (pamh, PAM_PROMPT_ECHO_ON, responses, "%s [%s] ", text, def);
+ rc = pam_prompt (pamh, PAM_PROMPT_ECHO_ON, response, "%s [%s] ", text, def);
else
- rc = pam_prompt (pamh, PAM_PROMPT_ECHO_ON, responses, "%s ", text);
- if (debug)
- pam_syslog(pamh, LOG_NOTICE, "%s %s", text, responses[0]);
+ rc = pam_prompt (pamh, PAM_PROMPT_ECHO_ON, response, "%s ", text);
+
+ if (*response == NULL) {
+ rc = PAM_CONV_ERR;
+ }
+
+ if (rc != PAM_SUCCESS) {
+ pam_syslog(pamh, LOG_WARNING, "No response to query: %s", text);
+ } else if (debug)
+ pam_syslog(pamh, LOG_NOTICE, "%s %s", text, *response);
return rc;
}
@@ -157,13 +165,15 @@ manual_context (pam_handle_t *pamh, cons
context_t new_context;
int mls_enabled = is_selinux_mls_enabled();
char *type=NULL;
- char *responses=NULL;
+ char *response=NULL;
while (1) {
- query_response(pamh,
- _("Would you like to enter a security context? [N] "), NULL,
- &responses,debug);
- if ((responses[0] == 'y') || (responses[0] == 'Y'))
+ if (query_response(pamh,
+ _("Would you like to enter a security context? [N] "), NULL,
+ &response, debug) != PAM_SUCCESS)
+ return NULL;
+
+ if ((response[0] == 'y') || (response[0] == 'Y'))
{
if (mls_enabled)
new_context = context_new ("user:role:type:level");
@@ -176,26 +186,29 @@ manual_context (pam_handle_t *pamh, cons
if (context_user_set (new_context, user))
goto fail_set;
- _pam_drop(responses);
+ _pam_drop(response);
/* Allow the user to enter each field of the context individually */
- query_response(pamh,_("role:"), NULL, &responses,debug);
- if (responses[0] != '\0') {
- if (context_role_set (new_context, responses))
+ if (query_response(pamh, _("role:"), NULL, &response, debug) == PAM_SUCCESS &&
+ response[0] != '\0') {
+ if (context_role_set (new_context, response))
goto fail_set;
- if (get_default_type(responses, &type))
+ if (get_default_type(response, &type))
goto fail_set;
if (context_type_set (new_context, type))
goto fail_set;
}
- _pam_drop(responses);
+ _pam_drop(response);
+
if (mls_enabled)
{
- query_response(pamh,_("level:"), NULL, &responses,debug);
- if (responses[0] != '\0') {
- if (context_range_set (new_context, responses))
+ if (query_response(pamh, _("level:"), NULL, &response, debug) == PAM_SUCCESS &&
+ response[0] != '\0') {
+ if (context_range_set (new_context, response))
goto fail_set;
}
+ _pam_drop(response);
}
+
/* Get the string value of the context and see if it is valid. */
if (!security_check_context(context_str(new_context))) {
newcon = strdup(context_str(new_context));
@@ -204,16 +217,17 @@ manual_context (pam_handle_t *pamh, cons
}
else
send_text(pamh,_("Not a valid security context"),debug);
- context_free (new_context);
+
+ context_free (new_context);
}
else {
- _pam_drop(responses);
+ _pam_drop(response);
return NULL;
}
} /* end while */
fail_set:
free(type);
- _pam_drop(responses);
+ _pam_drop(response);
context_free (new_context);
return NULL;
}
@@ -239,69 +253,91 @@ static int mls_range_allowed(pam_handle_
}
static security_context_t
-config_context (pam_handle_t *pamh, security_context_t puser_context, int debug)
+config_context (pam_handle_t *pamh, security_context_t defaultcon, int use_current_range, int debug)
{
security_context_t newcon=NULL;
context_t new_context;
int mls_enabled = is_selinux_mls_enabled();
- char *responses=NULL;
+ char *response=NULL;
char *type=NULL;
char resp_val = 0;
- pam_prompt (pamh, PAM_TEXT_INFO, NULL, _("Default Security Context %s\n"), puser_context);
+ pam_prompt (pamh, PAM_TEXT_INFO, NULL, _("Default Security Context %s\n"), defaultcon);
while (1) {
- query_response(pamh,
+ if (query_response(pamh,
_("Would you like to enter a different role or level?"), "n",
- &responses,debug);
-
- resp_val = responses[0];
- _pam_drop(responses);
+ &response, debug) == PAM_SUCCESS) {
+ resp_val = response[0];
+ _pam_drop(response);
+ } else {
+ resp_val = 'N';
+ }
if ((resp_val == 'y') || (resp_val == 'Y'))
{
- new_context = context_new(puser_context);
-
+ if ((new_context = context_new(defaultcon)) == NULL)
+ goto fail_set;
+
/* Allow the user to enter role and level individually */
- query_response(pamh,_("role:"), context_role_get(new_context),
- &responses, debug);
- if (responses[0]) {
- if (get_default_type(responses, &type)) {
- pam_prompt (pamh, PAM_ERROR_MSG, NULL, _("No default type for role %s\n"), responses);
- _pam_drop(responses);
+ if (query_response(pamh, _("role:"), context_role_get(new_context),
+ &response, debug) == PAM_SUCCESS && response[0]) {
+ if (get_default_type(response, &type)) {
+ pam_prompt (pamh, PAM_ERROR_MSG, NULL, _("No default type for role %s\n"), response);
+ _pam_drop(response);
continue;
} else {
- if (context_role_set(new_context, responses))
+ if (context_role_set(new_context, response))
goto fail_set;
if (context_type_set (new_context, type))
goto fail_set;
}
}
- _pam_drop(responses);
+ _pam_drop(response);
+
if (mls_enabled)
{
- query_response(pamh,_("level:"), context_range_get(new_context),
- &responses, debug);
- if (responses[0]) {
- if (context_range_set(new_context, responses))
- goto fail_set;
+ if (use_current_range) {
+ security_context_t mycon = NULL;
+ context_t my_context;
+
+ if (getcon(&mycon) != 0)
+ goto fail_set;
+ my_context = context_new(mycon);
+ if (my_context == NULL) {
+ freecon(mycon);
+ goto fail_set;
+ }
+ freecon(mycon);
+ if (context_range_set(new_context, context_range_get(my_context))) {
+ context_free(my_context);
+ goto fail_set;
+ }
+ context_free(my_context);
+ } else if (query_response(pamh, _("level:"), context_range_get(new_context),
+ &response, debug) == PAM_SUCCESS && response[0]) {
+ if (context_range_set(new_context, response))
+ goto fail_set;
}
- _pam_drop(responses);
+ _pam_drop(response);
}
+
if (debug)
pam_syslog(pamh, LOG_NOTICE, "Selected Security Context %s", context_str(new_context));
/* Get the string value of the context and see if it is valid. */
if (!security_check_context(context_str(new_context))) {
newcon = strdup(context_str(new_context));
- context_free (new_context);
+ if (newcon == NULL)
+ goto fail_set;
+ context_free(new_context);
/* we have to check that this user is allowed to go into the
range they have specified ... role is tied to an seuser, so that'll
be checked at setexeccon time */
- if (mls_enabled && !mls_range_allowed(pamh, puser_context, newcon, debug)) {
- pam_syslog(pamh, LOG_NOTICE, "Security context %s is not allowed for %s", puser_context, newcon);
+ if (mls_enabled && !mls_range_allowed(pamh, defaultcon, newcon, debug)) {
+ pam_syslog(pamh, LOG_NOTICE, "Security context %s is not allowed for %s", defaultcon, newcon);
- send_audit_message(pamh, 0, puser_context, newcon);
+ send_audit_message(pamh, 0, defaultcon, newcon);
free(newcon);
goto fail_range;
@@ -309,26 +345,120 @@ config_context (pam_handle_t *pamh, secu
return newcon;
}
else {
- send_audit_message(pamh, 0, puser_context, context_str(new_context));
+ send_audit_message(pamh, 0, defaultcon, context_str(new_context));
send_text(pamh,_("Not a valid security context"),debug);
}
context_free(new_context); /* next time around allocates another */
}
else
- return strdup(puser_context);
+ return strdup(defaultcon);
} /* end while */
return NULL;
fail_set:
free(type);
- _pam_drop(responses);
+ _pam_drop(response);
context_free (new_context);
- send_audit_message(pamh, 0, puser_context, NULL);
+ send_audit_message(pamh, 0, defaultcon, NULL);
fail_range:
return NULL;
}
+static security_context_t
+context_from_env (pam_handle_t *pamh, security_context_t defaultcon, int env_params, int use_current_range, int debug)
+{
+ security_context_t newcon = NULL;
+ context_t new_context;
+ context_t my_context = NULL;
+ int mls_enabled = is_selinux_mls_enabled();
+ const char *env = NULL;
+ char *type = NULL;
+
+ if ((new_context = context_new(defaultcon)) == NULL)
+ goto fail_set;
+
+ if (env_params && (env = pam_getenv(pamh, "SELINUX_ROLE_REQUESTED")) != NULL && env[0] != '\0') {
+ if (debug)
+ pam_syslog(pamh, LOG_NOTICE, "Requested role: %s", env);
+
+ if (get_default_type(env, &type)) {
+ pam_syslog(pamh, LOG_NOTICE, "No default type for role %s", env);
+ goto fail_set;
+ } else {
+ if (context_role_set(new_context, env))
+ goto fail_set;
+ if (context_type_set(new_context, type))
+ goto fail_set;
+ }
+ }
+
+ if (mls_enabled) {
+ if ((env = pam_getenv(pamh, "SELINUX_USE_CURRENT_RANGE")) != NULL && env[0] == '1') {
+ if (debug)
+ pam_syslog(pamh, LOG_NOTICE, "SELINUX_USE_CURRENT_RANGE is set");
+ use_current_range = 1;
+ }
+
+ if (use_current_range) {
+ security_context_t mycon = NULL;
+
+ if (getcon(&mycon) != 0)
+ goto fail_set;
+ my_context = context_new(mycon);
+ if (my_context == NULL) {
+ freecon(mycon);
+ goto fail_set;
+ }
+ freecon(mycon);
+ env = context_range_get(my_context);
+ } else {
+ env = pam_getenv(pamh, "SELINUX_LEVEL_REQUESTED");
+ }
+
+ if (env != NULL && env[0] != '\0') {
+ if (debug)
+ pam_syslog(pamh, LOG_NOTICE, "Requested level: %s", env);
+ if (context_range_set(new_context, env))
+ goto fail_set;
+ }
+ }
+
+ newcon = strdup(context_str(new_context));
+ if (newcon == NULL)
+ goto fail_set;
+
+ if (debug)
+ pam_syslog(pamh, LOG_NOTICE, "Selected Security Context %s", newcon);
+
+ /* Get the string value of the context and see if it is valid. */
+ if (security_check_context(newcon)) {
+ pam_syslog(pamh, LOG_NOTICE, "Not a valid security context %s", newcon);
+ send_audit_message(pamh, 0, defaultcon, newcon);
+ freecon(newcon);
+ newcon = NULL;
+
+ goto fail_set;
+ }
+
+ /* we have to check that this user is allowed to go into the
+ range they have specified ... role is tied to an seuser, so that'll
+ be checked at setexeccon time */
+ if (mls_enabled && !mls_range_allowed(pamh, defaultcon, newcon, debug)) {
+ pam_syslog(pamh, LOG_NOTICE, "Security context %s is not allowed for %s", defaultcon, newcon);
+ send_audit_message(pamh, 0, defaultcon, newcon);
+ freecon(newcon);
+ newcon = NULL;
+ }
+
+ fail_set:
+ free(type);
+ context_free(my_context);
+ context_free(new_context);
+ send_audit_message(pamh, 0, defaultcon, NULL);
+ return newcon;
+}
+
static void
security_restorelabel_tty(const pam_handle_t *pamh,
const char *tty, security_context_t context)
@@ -439,13 +569,14 @@ PAM_EXTERN int
pam_sm_open_session(pam_handle_t *pamh, int flags UNUSED,
int argc, const char **argv)
{
- int i, debug = 0, ttys=1, has_tty=isatty(0);
+ int i, debug = 0, ttys=1;
int verbose=0, close_session=0;
int select_context = 0;
int use_current_range = 0;
int ret = 0;
security_context_t* contextlist = NULL;
int num_contexts = 0;
+ int env_params = 0;
const char *username = NULL;
const void *tty = NULL;
char *seuser=NULL;
@@ -472,13 +603,16 @@ pam_sm_open_session(pam_handle_t *pamh,
if (strcmp(argv[i], "use_current_range") == 0) {
use_current_range = 1;
}
+ if (strcmp(argv[i], "env_params") == 0) {
+ env_params = 1;
+ }
}
if (debug)
pam_syslog(pamh, LOG_NOTICE, "Open Session");
- if (select_context && use_current_range) {
- pam_syslog(pamh, LOG_ERR, "select_context cannot be used with use_current_range");
+ if (select_context && env_params) {
+ pam_syslog(pamh, LOG_ERR, "select_context cannot be used with env_params");
select_context = 0;
}
@@ -510,12 +644,17 @@ pam_sm_open_session(pam_handle_t *pamh,
freeconary(contextlist);
if (default_user_context == NULL) {
pam_syslog(pamh, LOG_ERR, "Out of memory");
- return PAM_AUTH_ERR;
+ return PAM_BUF_ERR;
}
+
user_context = default_user_context;
- if (select_context && has_tty) {
- user_context = config_context(pamh, default_user_context, debug);
- if (user_context == NULL) {
+ if (select_context) {
+ user_context = config_context(pamh, default_user_context, use_current_range, debug);
+ } else if (env_params || use_current_range) {
+ user_context = context_from_env(pamh, default_user_context, env_params, use_current_range, debug);
+ }
+
+ if (user_context == NULL) {
freecon(default_user_context);
pam_syslog(pamh, LOG_ERR, "Unable to get valid context for %s",
username);
@@ -524,11 +663,9 @@ pam_sm_open_session(pam_handle_t *pamh,
return PAM_AUTH_ERR;
else
return PAM_SUCCESS;
- }
- }
+ }
}
else {
- if (has_tty) {
user_context = manual_context(pamh,seuser,debug);
if (user_context == NULL) {
pam_syslog (pamh, LOG_ERR, "Unable to get valid context for %s",
@@ -538,59 +675,6 @@ pam_sm_open_session(pam_handle_t *pamh,
else
return PAM_SUCCESS;
}
- } else {
- pam_syslog (pamh, LOG_ERR,
- "Unable to get valid context for %s, No valid tty",
- username);
- if (security_getenforce() == 1)
- return PAM_AUTH_ERR;
- else
- return PAM_SUCCESS;
- }
- }
-
- if (use_current_range && is_selinux_mls_enabled()) {
- security_context_t process_context=NULL;
- if (getcon(&process_context) == 0) {
- context_t pcon, ucon;
- char *process_level=NULL;
- security_context_t orig_context;
-
- if (user_context)
- orig_context = user_context;
- else
- orig_context = default_user_context;
-
- pcon = context_new(process_context);
- freecon(process_context);
- process_level = strdup(context_range_get(pcon));
- context_free(pcon);
-
- if (debug)
- pam_syslog (pamh, LOG_DEBUG, "process level=%s", process_level);
-
- ucon = context_new(orig_context);
-
- context_range_set(ucon, process_level);
- free(process_level);
-
- if (!mls_range_allowed(pamh, orig_context, context_str(ucon), debug)) {
- send_text(pamh, _("Requested MLS level not in permitted range"), debug);
- /* even if default_user_context is NULL audit that anyway */
- send_audit_message(pamh, 0, default_user_context, context_str(ucon));
- context_free(ucon);
- return PAM_AUTH_ERR;
- }
-
- if (debug)
- pam_syslog (pamh, LOG_DEBUG, "adjusted context=%s", context_str(ucon));
-
- /* replace the user context with the level adjusted one */
- freecon(user_context);
- user_context = strdup(context_str(ucon));
-
- context_free(ucon);
- }
}
if (getexeccon(&prev_user_context)<0) {
@@ -613,7 +697,7 @@ pam_sm_open_session(pam_handle_t *pamh,
}
}
}
- if(ttys && tty ) {
+ if (ttys && tty) {
ttyn=strdup(tty);
ttyn_context=security_label_tty(pamh,ttyn,user_context);
}

679
pam-1.0.1-namespace-create.patch Normal file
View File

@ -0,0 +1,679 @@
diff -up Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.c.create Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.c
--- Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.c.create 2008-03-20 18:06:32.000000000 +0100
+++ Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.c 2008-04-03 17:32:28.000000000 +0200
@@ -32,6 +32,8 @@
* DEALINGS IN THE SOFTWARE.
*/
+#define _ATFILE_SOURCE
+
#include "pam_namespace.h"
#include "argv_parse.h"
@@ -78,11 +80,29 @@ static void del_polydir_list(struct poly
}
}
-static void cleanup_data(pam_handle_t *pamh UNUSED , void *data, int err UNUSED)
+static void unprotect_dirs(struct protect_dir_s *dir)
+{
+ struct protect_dir_s *next;
+
+ while (dir != NULL) {
+ umount(dir->dir);
+ free(dir->dir);
+ next = dir->next;
+ free(dir);
+ dir = next;
+ }
+}
+
+static void cleanup_polydir_data(pam_handle_t *pamh UNUSED , void *data, int err UNUSED)
{
del_polydir_list(data);
}
+static void cleanup_protect_data(pam_handle_t *pamh UNUSED , void *data, int err UNUSED)
+{
+ unprotect_dirs(data);
+}
+
static char *expand_variables(const char *orig, const char *var_names[], const char *var_values[])
{
const char *src = orig;
@@ -132,8 +152,8 @@ static char *expand_variables(const char
static int parse_create_params(char *params, struct polydir_s *poly)
{
- char *sptr;
- struct passwd *pwd;
+ char *next;
+ struct passwd *pwd = NULL;
struct group *grp;
poly->mode = (mode_t)ULONG_MAX;
@@ -144,28 +164,40 @@ static int parse_create_params(char *par
return 0;
params++;
- params = strtok_r(params, ",", &sptr);
- if (params == NULL)
- return 0;
+ next = strchr(params, ',');
+ if (next != NULL) {
+ *next = '\0';
+ next++;
+ }
- errno = 0;
- poly->mode = (mode_t)strtoul(params, NULL, 0);
- if (errno != 0) {
- poly->mode = (mode_t)ULONG_MAX;
+ if (*params != '\0') {
+ errno = 0;
+ poly->mode = (mode_t)strtoul(params, NULL, 0);
+ if (errno != 0) {
+ poly->mode = (mode_t)ULONG_MAX;
+ }
}
- params = strtok_r(NULL, ",", &sptr);
+ params = next;
if (params == NULL)
return 0;
+ next = strchr(params, ',');
+ if (next != NULL) {
+ *next = '\0';
+ next++;
+ }
- pwd = getpwnam(params); /* session modules are not reentrant */
- if (pwd == NULL)
- return -1;
- poly->owner = pwd->pw_uid;
-
- params = strtok_r(NULL, ",", &sptr);
- if (params == NULL) {
- poly->group = pwd->pw_gid;
+ if (*params != '\0') {
+ pwd = getpwnam(params); /* session modules are not reentrant */
+ if (pwd == NULL)
+ return -1;
+ poly->owner = pwd->pw_uid;
+ }
+
+ params = next;
+ if (params == NULL || *params == '\0') {
+ if (pwd != NULL)
+ poly->group = pwd->pw_gid;
return 0;
}
grp = getgrnam(params);
@@ -199,7 +231,7 @@ static int parse_method(char *method, st
struct instance_data *idata)
{
enum polymethod pm;
- char *sptr;
+ char *sptr = NULL;
static const char *method_names[] = { "user", "context", "level", "tmpdir",
"tmpfs", NULL };
static const char *flag_names[] = { "create", "noinit", "iscript",
@@ -921,10 +953,158 @@ fail:
return rc;
}
+static int protect_mount(int dfd, const char *path, struct instance_data *idata)
+{
+ struct protect_dir_s *dir = idata->protect_dirs;
+ char tmpbuf[64];
+
+ while (dir != NULL) {
+ if (strcmp(path, dir->dir) == 0) {
+ return 0;
+ }
+ dir = dir->next;
+ }
+
+ dir = calloc(1, sizeof(*dir));
+
+ if (dir == NULL) {
+ return -1;
+ }
+
+ dir->dir = strdup(path);
+
+ if (dir->dir == NULL) {
+ free(dir);
+ return -1;
+ }
+
+ snprintf(tmpbuf, sizeof(tmpbuf), "/proc/self/fd/%d", dfd);
+
+ if (idata->flags & PAMNS_DEBUG) {
+ pam_syslog(idata->pamh, LOG_INFO,
+ "Protect mount of %s over itself", path);
+ }
+
+ if (mount(tmpbuf, tmpbuf, NULL, MS_BIND, NULL) != 0) {
+ int save_errno = errno;
+ pam_syslog(idata->pamh, LOG_ERR,
+ "Protect mount of %s failed: %m", tmpbuf);
+ free(dir->dir);
+ free(dir);
+ errno = save_errno;
+ return -1;
+ }
+
+ dir->next = idata->protect_dirs;
+ idata->protect_dirs = dir;
+
+ return 0;
+}
+
+static int protect_dir(const char *path, mode_t mode, int do_mkdir,
+ struct instance_data *idata)
+{
+ char *p = strdup(path);
+ char *d;
+ char *dir = p;
+ int dfd = AT_FDCWD;
+ int dfd_next;
+ int save_errno;
+ int flags = O_RDONLY;
+ int rv = -1;
+ struct stat st;
+
+ if (p == NULL) {
+ goto error;
+ }
+
+ if (*dir == '/') {
+ dfd = open("/", flags);
+ if (dfd == -1) {
+ goto error;
+ }
+ dir++; /* assume / is safe */
+ }
+
+ while ((d=strchr(dir, '/')) != NULL) {
+ *d = '\0';
+ dfd_next = openat(dfd, dir, flags);
+ if (dfd_next == -1) {
+ goto error;
+ }
+
+ if (dfd != AT_FDCWD)
+ close(dfd);
+ dfd = dfd_next;
+
+ if (fstat(dfd, &st) != 0) {
+ goto error;
+ }
+
+ if (flags & O_NOFOLLOW) {
+ /* we are inside user-owned dir - protect */
+ if (protect_mount(dfd, p, idata) == -1)
+ goto error;
+ } else if (st.st_uid != 0 || st.st_gid != 0 ||
+ (st.st_mode & S_IWOTH)) {
+ /* do not follow symlinks on subdirectories */
+ flags |= O_NOFOLLOW;
+ }
+
+ *d = '/';
+ dir = d + 1;
+ }
+
+ rv = openat(dfd, dir, flags);
+
+ if (rv == -1) {
+ if (!do_mkdir || mkdirat(dfd, dir, mode) != 0) {
+ goto error;
+ }
+ rv = openat(dfd, dir, flags);
+ }
+
+ if (rv != -1) {
+ if (fstat(rv, &st) != 0) {
+ save_errno = errno;
+ close(rv);
+ rv = -1;
+ errno = save_errno;
+ goto error;
+ }
+ if (!S_ISDIR(st.st_mode)) {
+ close(rv);
+ errno = ENOTDIR;
+ rv = -1;
+ goto error;
+ }
+ }
+
+ if (flags & O_NOFOLLOW) {
+ /* we are inside user-owned dir - protect */
+ if (protect_mount(rv, p, idata) == -1) {
+ save_errno = errno;
+ close(rv);
+ rv = -1;
+ errno = save_errno;
+ }
+ }
+
+error:
+ save_errno = errno;
+ free(p);
+ if (dfd != AT_FDCWD)
+ close(dfd);
+ errno = save_errno;
+
+ return rv;
+}
+
static int check_inst_parent(char *ipath, struct instance_data *idata)
{
struct stat instpbuf;
char *inst_parent, *trailing_slash;
+ int dfd;
/*
* stat the instance parent path to make sure it exists
* and is a directory. Check that its mode is 000 (unless the
@@ -942,30 +1122,27 @@ static int check_inst_parent(char *ipath
if (trailing_slash)
*trailing_slash = '\0';
- if (stat(inst_parent, &instpbuf) < 0) {
- pam_syslog(idata->pamh, LOG_ERR, "Error stating %s, %m", inst_parent);
- free(inst_parent);
- return PAM_SESSION_ERR;
- }
+ dfd = protect_dir(inst_parent, 0, 1, idata);
- /*
- * Make sure we are dealing with a directory
- */
- if (!S_ISDIR(instpbuf.st_mode)) {
- pam_syslog(idata->pamh, LOG_ERR, "Instance parent %s is not a dir",
- inst_parent);
+ if (dfd == -1 || fstat(dfd, &instpbuf) < 0) {
+ pam_syslog(idata->pamh, LOG_ERR,
+ "Error creating or accessing instance parent %s, %m", inst_parent);
+ if (dfd != -1)
+ close(dfd);
free(inst_parent);
return PAM_SESSION_ERR;
}
if ((idata->flags & PAMNS_IGN_INST_PARENT_MODE) == 0) {
- if (instpbuf.st_mode & (S_IRWXU|S_IRWXG|S_IRWXO)) {
- pam_syslog(idata->pamh, LOG_ERR, "Mode of inst parent %s not 000",
+ if ((instpbuf.st_mode & (S_IRWXU|S_IRWXG|S_IRWXO)) || instpbuf.st_uid != 0) {
+ pam_syslog(idata->pamh, LOG_ERR, "Mode of inst parent %s not 000 or owner not root",
inst_parent);
+ close(dfd);
free(inst_parent);
return PAM_SESSION_ERR;
}
}
+ close(dfd);
free(inst_parent);
return PAM_SUCCESS;
}
@@ -1051,6 +1228,8 @@ static int create_polydir(struct polydir
security_context_t dircon, oldcon = NULL;
#endif
const char *dir = polyptr->dir;
+ uid_t uid;
+ gid_t gid;
if (polyptr->mode != (mode_t)ULONG_MAX)
mode = polyptr->mode;
@@ -1077,8 +1256,8 @@ static int create_polydir(struct polydir
}
#endif
- rc = mkdir(dir, mode);
- if (rc != 0) {
+ rc = protect_dir(dir, mode, 1, idata);
+ if (rc == -1) {
pam_syslog(idata->pamh, LOG_ERR,
"Error creating directory %s: %m", dir);
return PAM_SESSION_ERR;
@@ -1098,36 +1277,41 @@ static int create_polydir(struct polydir
if (polyptr->mode != (mode_t)ULONG_MAX) {
/* explicit mode requested */
- if (chmod(dir, mode) != 0) {
+ if (fchmod(rc, mode) != 0) {
pam_syslog(idata->pamh, LOG_ERR,
"Error changing mode of directory %s: %m", dir);
+ close(rc);
+ umount(dir); /* undo the eventual protection bind mount */
rmdir(dir);
return PAM_SESSION_ERR;
}
}
- if (polyptr->owner != (uid_t)ULONG_MAX) {
- if (chown(dir, polyptr->owner, polyptr->group) != 0) {
- pam_syslog(idata->pamh, LOG_ERR,
- "Unable to change owner on directory %s: %m", dir);
- rmdir(dir);
- return PAM_SESSION_ERR;
- }
- if (idata->flags & PAMNS_DEBUG)
- pam_syslog(idata->pamh, LOG_DEBUG,
- "Polydir owner %u group %u from configuration", polyptr->owner, polyptr->group);
- } else {
- if (chown(dir, idata->uid, idata->gid) != 0) {
- pam_syslog(idata->pamh, LOG_ERR,
- "Unable to change owner on directory %s: %m", dir);
- rmdir(dir);
- return PAM_SESSION_ERR;
- }
- if (idata->flags & PAMNS_DEBUG)
- pam_syslog(idata->pamh, LOG_DEBUG,
- "Polydir owner %u group %u", idata->uid, idata->gid);
+ if (polyptr->owner != (uid_t)ULONG_MAX)
+ uid = polyptr->owner;
+ else
+ uid = idata->uid;
+
+ if (polyptr->group != (gid_t)ULONG_MAX)
+ gid = polyptr->group;
+ else
+ gid = idata->gid;
+
+ if (fchown(rc, uid, gid) != 0) {
+ pam_syslog(idata->pamh, LOG_ERR,
+ "Unable to change owner on directory %s: %m", dir);
+ close(rc);
+ umount(dir); /* undo the eventual protection bind mount */
+ rmdir(dir);
+ return PAM_SESSION_ERR;
}
+ close(rc);
+
+ if (idata->flags & PAMNS_DEBUG)
+ pam_syslog(idata->pamh, LOG_DEBUG,
+ "Polydir owner %u group %u", uid, gid);
+
return PAM_SUCCESS;
}
@@ -1135,17 +1319,16 @@ static int create_polydir(struct polydir
* Create polyinstantiated instance directory (ipath).
*/
#ifdef WITH_SELINUX
-static int create_dirs(struct polydir_s *polyptr, char *ipath, struct stat *statbuf,
+static int create_instance(struct polydir_s *polyptr, char *ipath, struct stat *statbuf,
security_context_t icontext, security_context_t ocontext,
struct instance_data *idata)
#else
-static int create_dirs(struct polydir_s *polyptr, char *ipath, struct stat *statbuf,
+static int create_instance(struct polydir_s *polyptr, char *ipath, struct stat *statbuf,
struct instance_data *idata)
#endif
{
struct stat newstatbuf;
int fd;
- int newdir = 0;
/*
* Check to make sure instance parent is valid.
@@ -1171,7 +1354,7 @@ static int create_dirs(struct polydir_s
strcpy(ipath, polyptr->instance_prefix);
} else if (mkdir(ipath, S_IRUSR) < 0) {
if (errno == EEXIST)
- goto inst_init;
+ return PAM_IGNORE;
else {
pam_syslog(idata->pamh, LOG_ERR, "Error creating %s, %m",
ipath);
@@ -1179,7 +1362,6 @@ static int create_dirs(struct polydir_s
}
}
- newdir = 1;
/* Open a descriptor to it to prevent races */
fd = open(ipath, O_DIRECTORY | O_RDONLY);
if (fd < 0) {
@@ -1235,33 +1417,22 @@ static int create_dirs(struct polydir_s
return PAM_SESSION_ERR;
}
close(fd);
-
- /*
- * Check to see if there is a namespace initialization script in
- * the /etc/security directory. If such a script exists
- * execute it and pass directory to polyinstantiate and instance
- * directory as arguments.
- */
-
-inst_init:
- if (polyptr->flags & POLYDIR_NOINIT)
- return PAM_SUCCESS;
-
- return inst_init(polyptr, ipath, idata, newdir);
+ return PAM_SUCCESS;
}
/*
* This function performs the namespace setup for a particular directory
- * that is being polyinstantiated. It creates an MD5 hash of instance
- * directory, calls create_dirs to create it with appropriate
+ * that is being polyinstantiated. It calls poly_name to create name of instance
+ * directory, calls create_instance to mkdir it with appropriate
* security attributes, and performs bind mount to setup the process
* namespace.
*/
static int ns_setup(struct polydir_s *polyptr,
struct instance_data *idata)
{
- int retval = 0;
+ int retval;
+ int newdir = 1;
char *inst_dir = NULL;
char *instname = NULL;
struct stat statbuf;
@@ -1273,37 +1444,40 @@ static int ns_setup(struct polydir_s *po
pam_syslog(idata->pamh, LOG_DEBUG,
"Set namespace for directory %s", polyptr->dir);
- while (stat(polyptr->dir, &statbuf) < 0) {
- if (retval || !(polyptr->flags & POLYDIR_CREATE)) {
- pam_syslog(idata->pamh, LOG_ERR, "Error stating %s, %m",
- polyptr->dir);
- return PAM_SESSION_ERR;
- } else {
- if (create_polydir(polyptr, idata) != PAM_SUCCESS)
- return PAM_SESSION_ERR;
- retval = PAM_SESSION_ERR; /* bail out on next failed stat */
- }
- }
+ retval = protect_dir(polyptr->dir, 0, 0, idata);
- /*
- * Make sure we are dealing with a directory
- */
- if (!S_ISDIR(statbuf.st_mode)) {
- pam_syslog(idata->pamh, LOG_ERR, "Polydir %s is not a dir",
+ if (retval < 0 && errno != ENOENT) {
+ pam_syslog(idata->pamh, LOG_ERR, "Polydir %s access error: %m",
polyptr->dir);
- return PAM_SESSION_ERR;
+ return PAM_SESSION_ERR;
}
+ if (retval < 0 && (polyptr->flags & POLYDIR_CREATE)) {
+ if (create_polydir(polyptr, idata) != PAM_SUCCESS)
+ return PAM_SESSION_ERR;
+ } else {
+ close(retval);
+ }
+
if (polyptr->method == TMPFS) {
if (mount("tmpfs", polyptr->dir, "tmpfs", 0, NULL) < 0) {
pam_syslog(idata->pamh, LOG_ERR, "Error mounting tmpfs on %s, %m",
polyptr->dir);
return PAM_SESSION_ERR;
}
- /* we must call inst_init after the mount in this case */
+
+ if (polyptr->flags & POLYDIR_NOINIT)
+ return PAM_SUCCESS;
+
return inst_init(polyptr, "tmpfs", idata, 1);
}
+ if (stat(polyptr->dir, &statbuf) < 0) {
+ pam_syslog(idata->pamh, LOG_ERR, "Error stating %s: %m",
+ polyptr->dir);
+ return PAM_SESSION_ERR;
+ }
+
/*
* Obtain the name of instance pathname based on the
* polyinstantiation method and instance context returned by
@@ -1341,14 +1515,18 @@ static int ns_setup(struct polydir_s *po
* contexts, owner, group and mode bits.
*/
#ifdef WITH_SELINUX
- retval = create_dirs(polyptr, inst_dir, &statbuf, instcontext,
+ retval = create_instance(polyptr, inst_dir, &statbuf, instcontext,
origcontext, idata);
#else
- retval = create_dirs(polyptr, inst_dir, &statbuf, idata);
+ retval = create_instance(polyptr, inst_dir, &statbuf, idata);
#endif
- if (retval < 0) {
- pam_syslog(idata->pamh, LOG_ERR, "Error creating instance dir");
+ if (retval == PAM_IGNORE) {
+ newdir = 0;
+ retval = PAM_SUCCESS;
+ }
+
+ if (retval != PAM_SUCCESS) {
goto error_out;
}
@@ -1363,6 +1541,9 @@ static int ns_setup(struct polydir_s *po
goto error_out;
}
+ if (!(polyptr->flags & POLYDIR_NOINIT))
+ retval = inst_init(polyptr, inst_dir, idata, newdir);
+
goto cleanup;
/*
@@ -1600,12 +1781,21 @@ static int setup_namespace(struct instan
}
}
out:
- if (retval != PAM_SUCCESS)
+ if (retval != PAM_SUCCESS) {
+ cleanup_tmpdirs(idata);
+ unprotect_dirs(idata->protect_dirs);
+ } else if (pam_set_data(idata->pamh, NAMESPACE_PROTECT_DATA, idata->protect_dirs,
+ cleanup_protect_data) != PAM_SUCCESS) {
+ pam_syslog(idata->pamh, LOG_ERR, "Unable to set namespace protect data");
cleanup_tmpdirs(idata);
- else if (pam_set_data(idata->pamh, NAMESPACE_POLYDIR_DATA, idata->polydirs_ptr,
- cleanup_data) != PAM_SUCCESS) {
- pam_syslog(idata->pamh, LOG_ERR, "Unable to set namespace data");
+ unprotect_dirs(idata->protect_dirs);
+ return PAM_SYSTEM_ERR;
+ } else if (pam_set_data(idata->pamh, NAMESPACE_POLYDIR_DATA, idata->polydirs_ptr,
+ cleanup_polydir_data) != PAM_SUCCESS) {
+ pam_syslog(idata->pamh, LOG_ERR, "Unable to set namespace polydir data");
cleanup_tmpdirs(idata);
+ pam_set_data(idata->pamh, NAMESPACE_PROTECT_DATA, NULL, NULL);
+ idata->protect_dirs = NULL;
return PAM_SYSTEM_ERR;
}
return retval;
@@ -1742,6 +1932,7 @@ PAM_EXTERN int pam_sm_open_session(pam_h
/* init instance data */
idata.flags = 0;
idata.polydirs_ptr = NULL;
+ idata.protect_dirs = NULL;
idata.pamh = pamh;
#ifdef WITH_SELINUX
if (is_selinux_enabled())
@@ -1893,6 +2084,7 @@ PAM_EXTERN int pam_sm_close_session(pam_
}
pam_set_data(idata.pamh, NAMESPACE_POLYDIR_DATA, NULL, NULL);
+ pam_set_data(idata.pamh, NAMESPACE_PROTECT_DATA, NULL, NULL);
return PAM_SUCCESS;
}
diff -up Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.h.create Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.h
--- Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.h.create 2008-02-13 13:49:44.000000000 +0100
+++ Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.h 2008-03-20 18:07:29.000000000 +0100
@@ -107,6 +107,7 @@
#define NAMESPACE_MAX_DIR_LEN 80
#define NAMESPACE_POLYDIR_DATA "pam_namespace:polydir_data"
+#define NAMESPACE_PROTECT_DATA "pam_namespace:protect_data"
/*
* Polyinstantiation method options, based on user, security context
@@ -156,9 +157,15 @@ struct polydir_s {
struct polydir_s *next; /* pointer to the next polydir entry */
};
+struct protect_dir_s {
+ char *dir; /* protected directory */
+ struct protect_dir_s *next; /* next entry */
+};
+
struct instance_data {
pam_handle_t *pamh; /* The pam handle for this instance */
struct polydir_s *polydirs_ptr; /* The linked list pointer */
+ struct protect_dir_s *protect_dirs; /* The pointer to stack of mount-protected dirs */
char user[LOGIN_NAME_MAX]; /* User name */
char ruser[LOGIN_NAME_MAX]; /* Requesting user name */
uid_t uid; /* The uid of the user */
@@ -166,3 +173,4 @@ struct instance_data {
uid_t ruid; /* The uid of the requesting user */
unsigned long flags; /* Flags for debug, selinux etc */
};
+
diff -up Linux-PAM-1.0.1/modules/pam_namespace/namespace.conf.5.xml.create Linux-PAM-1.0.1/modules/pam_namespace/namespace.conf.5.xml
--- Linux-PAM-1.0.1/modules/pam_namespace/namespace.conf.5.xml.create 2008-02-13 13:49:44.000000000 +0100
+++ Linux-PAM-1.0.1/modules/pam_namespace/namespace.conf.5.xml 2008-04-18 14:38:57.000000000 +0200
@@ -25,8 +25,8 @@
Directories can be polyinstantiated based on user name
or, in the case of SELinux, user name, sensitivity level or complete security context. If an
executable script <filename>/etc/security/namespace.init</filename>
- exists, it is used to initialize the namespace every time a new instance
- directory is setup. The script receives the polyinstantiated
+ exists, it is used to initialize the namespace every time an instance
+ directory is set up and mounted. The script receives the polyinstantiated
directory path and the instance directory path as its arguments.
</para>
diff -up Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.8.xml.create Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.8.xml
--- Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.8.xml.create 2008-02-13 13:49:44.000000000 +0100
+++ Linux-PAM-1.0.1/modules/pam_namespace/pam_namespace.8.xml 2008-04-18 14:40:54.000000000 +0200
@@ -64,11 +64,11 @@
provides a different instance of itself based on user name, or when
using SELinux, user name, security context or both. If an executable
script <filename>/etc/security/namespace.init</filename> exists, it
- is used to initialize the namespace every time a new instance
- directory is setup. The script receives the polyinstantiated
- directory path, the instance directory path, flag whether the instance
- directory was newly created (0 for no, 1 for yes), and the user name
- as its arguments.
+ is used to initialize the instance directory after it is set up
+ and mounted on the polyinstantiated direcory. The script receives the
+ polyinstantiated directory path, the instance directory path, flag
+ whether the instance directory was newly created (0 for no, 1 for yes),
+ and the user name as its arguments.
</para>
<para>

7
pam.changes
View File

@ -1,3 +1,10 @@
-------------------------------------------------------------------
Fri Aug 29 15:17:50 CEST 2008 - kukuk@suse.de
- Update to version 1.0.2 (fix SELinux regression)
- enhance pam_tally [FATE#303753]
- Backport fixes from CVS
-------------------------------------------------------------------
Wed Aug 20 14:59:30 CEST 2008 - prusnak@suse.cz

26
pam.spec
View File

@ -1,5 +1,5 @@
#
# spec file for package pam (Version 1.0.1)
# spec file for package pam (Version 1.0.2)
#
# Copyright (c) 2008 SUSE LINUX Products GmbH, Nuernberg, Germany.
#
@ -34,12 +34,12 @@ BuildRequires: libselinux-devel
License: BSD 3-Clause; GPL v2 or later
Group: System/Libraries
AutoReqProv: on
Version: 1.0.1
Release: 26
Version: 1.0.2
Release: 1
Summary: A Security Tool that Provides Authentication for Applications
Obsoletes: pam-laus
Source: Linux-PAM-%{version}.tar.bz2
Source1: Linux-PAM-%{version}-docs.tar.bz2
Source1: Linux-PAM-%{version}-SUSE-docs.tar.bz2
Source2: securetty
Source3: other.pamd
Source4: common-auth.pamd
@ -48,6 +48,13 @@ Source6: common-password.pamd
Source7: common-session.pamd
Source8: etc.environment
BuildRoot: %{_tmppath}/%{name}-%{version}-build
Patch: Linux-PAM-docu.diff
Patch1: pam_tally.diff
Patch2: pam_xauth.diff
Patch3: pam_sepermit.diff
Patch4: pam-1.0.1-namespace-create.patch
Patch5: pam-1.0.0-selinux-env-params.patch
Patch6: Linux-PAM-docu-generated.diff
%description
PAM (Pluggable Authentication Modules) is a system security tool that
@ -89,6 +96,13 @@ building both PAM-aware applications and modules for use with PAM.
%prep
%setup -q -n Linux-PAM-%{version} -b 1
%patch -p1
%patch1 -p1
%patch2 -p1
%patch3 -p1
%patch4 -p1
%patch5 -p0
%patch6 -p1
%build
CFLAGS="$RPM_OPT_FLAGS" \
@ -290,6 +304,10 @@ rm -rf $RPM_BUILD_ROOT
%{_libdir}/libpam_misc.so
%changelog
* Fri Aug 29 2008 kukuk@suse.de
- Update to version 1.0.2 (fix SELinux regression)
- enhance pam_tally [FATE#303753]
- Backport fixes from CVS
* Wed Aug 20 2008 prusnak@suse.cz
- enabled SELinux support [Fate#303662]
* Wed Apr 16 2008 kukuk@suse.de

17
pam_sepermit.diff Normal file
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@ -0,0 +1,17 @@
2008-04-17 Tomas Mraz <t8m@centrum.cz>
* modules/pam_sepermit/pam_sepermit.c(sepermit_match): Do not try
to lock if euid != 0.
--- Linux-PAM-1.0/modules/pam_sepermit/pam_sepermit.c 2008-03-31 12:31:50.000000000 +0200
+++ Linux-PAM/modules/pam_sepermit/pam_sepermit.c 2008-04-17 16:29:02.000000000 +0200
@@ -305,7 +305,7 @@
free(line);
fclose(f);
if (matched)
- return exclusive ? sepermit_lock(pamh, user, debug) : 0;
+ return (geteuid() == 0 && exclusive) ? sepermit_lock(pamh, user, debug) : 0;
else
return -1;
}

173
pam_tally.diff Normal file
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@ -0,0 +1,173 @@
2008-07-09 Thorsten Kukuk <kukuk@thkukuk.de>
* modules/pam_tally/pam_tally.c: Add support for silent and
no_log_info options.
* modules/pam_tally/pam_tally.8.xml: Document silent and
no_log_info options.
--- Linux-PAM-1.0/modules/pam_tally/pam_tally.8.xml 2007-10-10 16:10:07.000000000 +0200
+++ Linux-PAM/modules/pam_tally/pam_tally.8.xml 2008-08-20 20:56:28.000000000 +0200
@@ -51,6 +51,12 @@
<arg choice="opt">
audit
</arg>
+ <arg choice="opt">
+ silent
+ </arg>
+ <arg choice="opt">
+ no_log_info
+ </arg>
</cmdsynopsis>
<cmdsynopsis id="pam_tally-cmdsynopsis2">
<command>pam_tally</command>
@@ -150,6 +156,26 @@
</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term>
+ <option>silent</option>
+ </term>
+ <listitem>
+ <para>
+ Don't print informative messages.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>no_log_info</option>
+ </term>
+ <listitem>
+ <para>
+ Don't log informative messages via <citerefentry><refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
+ </para>
+ </listitem>
+ </varlistentry>
</variablelist>
</listitem>
</varlistentry>
--- Linux-PAM-1.0/modules/pam_tally/pam_tally.c 2007-11-20 11:58:11.000000000 +0100
+++ Linux-PAM/modules/pam_tally/pam_tally.c 2008-07-16 10:09:02.000000000 +0200
@@ -97,6 +97,8 @@
#define OPT_NO_LOCK_TIME 020
#define OPT_NO_RESET 040
#define OPT_AUDIT 0100
+#define OPT_SILENT 0200
+#define OPT_NOLOGNOTICE 0400
/*---------------------------------------------------------------------*/
@@ -205,6 +207,12 @@
else if ( ! strcmp ( *argv, "audit") ) {
opts->ctrl |= OPT_AUDIT;
}
+ else if ( ! strcmp ( *argv, "silent") ) {
+ opts->ctrl |= OPT_SILENT;
+ }
+ else if ( ! strcmp ( *argv, "no_log_info") ) {
+ opts->ctrl |= OPT_NOLOGNOTICE;
+ }
else {
pam_syslog(pamh, LOG_ERR, "unknown option: %s", *argv);
}
@@ -524,12 +532,17 @@
{
if ( lock_time + oldtime > time(NULL) )
{
- pam_syslog(pamh, LOG_NOTICE,
- "user %s (%lu) has time limit [%lds left]"
- " since last failure.",
- user, (unsigned long int) uid,
- oldtime+lock_time
- -time(NULL));
+ if (!(opts->ctrl & OPT_SILENT))
+ pam_info (pamh,
+ _("Account temporary locked (%lds seconds left)"),
+ oldtime+lock_time-time(NULL));
+
+ if (!(opts->ctrl & OPT_NOLOGNOTICE))
+ pam_syslog (pamh, LOG_NOTICE,
+ "user %s (%lu) has time limit [%lds left]"
+ " since last failure.",
+ user, (unsigned long int) uid,
+ oldtime+lock_time-time(NULL));
return PAM_AUTH_ERR;
}
}
@@ -545,9 +558,14 @@
( tally > deny ) && /* tally>deny means exceeded */
( ((opts->ctrl & OPT_DENY_ROOT) || uid) ) /* even_deny stops uid check */
) {
- pam_syslog(pamh, LOG_NOTICE,
- "user %s (%lu) tally "TALLY_FMT", deny "TALLY_FMT,
- user, (unsigned long int) uid, tally, deny);
+ if (!(opts->ctrl & OPT_SILENT))
+ pam_info (pamh, _("Accounted locked due to "TALLY_FMT" failed login"),
+ tally);
+
+ if (!(opts->ctrl & OPT_NOLOGNOTICE))
+ pam_syslog(pamh, LOG_NOTICE,
+ "user %s (%lu) tally "TALLY_FMT", deny "TALLY_FMT,
+ user, (unsigned long int) uid, tally, deny);
return PAM_AUTH_ERR; /* Only unconditional failure */
}
}
@@ -594,7 +612,7 @@
#ifdef PAM_SM_AUTH
PAM_EXTERN int
-pam_sm_authenticate(pam_handle_t *pamh, int flags UNUSED,
+pam_sm_authenticate(pam_handle_t *pamh, int flags,
int argc, const char **argv)
{
int
@@ -612,6 +630,9 @@
if ( rvcheck != PAM_SUCCESS )
RETURN_ERROR( rvcheck );
+ if (flags & PAM_SILENT)
+ opts->ctrl |= OPT_SILENT;
+
rvcheck = pam_get_uid(pamh, &uid, &user, opts);
if ( rvcheck != PAM_SUCCESS )
RETURN_ERROR( rvcheck );
@@ -625,7 +646,7 @@
}
PAM_EXTERN int
-pam_sm_setcred(pam_handle_t *pamh, int flags UNUSED,
+pam_sm_setcred(pam_handle_t *pamh, int flags,
int argc, const char **argv)
{
int
@@ -643,6 +664,9 @@
if ( rv != PAM_SUCCESS )
RETURN_ERROR( rv );
+ if (flags & PAM_SILENT)
+ opts->ctrl |= OPT_SILENT;
+
rv = pam_get_uid(pamh, &uid, &user, opts);
if ( rv != PAM_SUCCESS )
RETURN_ERROR( rv );
@@ -667,7 +691,7 @@
/* To reset failcount of user on successfull login */
PAM_EXTERN int
-pam_sm_acct_mgmt(pam_handle_t *pamh, int flags UNUSED,
+pam_sm_acct_mgmt(pam_handle_t *pamh, int flags,
int argc, const char **argv)
{
int
@@ -685,6 +709,9 @@
if ( rv != PAM_SUCCESS )
RETURN_ERROR( rv );
+ if (flags & PAM_SILENT)
+ opts->ctrl |= OPT_SILENT;
+
rv = pam_get_uid(pamh, &uid, &user, opts);
if ( rv != PAM_SUCCESS )
RETURN_ERROR( rv );

26
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@ -0,0 +1,26 @@
2008-04-08 Tomas Mraz <t8m@centrum.cz>
* modules/pam_xauth/pam_xauth.c(run_coprocess): Avoid multiple
calls to sysconf() (based on patch by Sami Farin).
--- Linux-PAM-1.0/modules/pam_xauth/pam_xauth.c 2007-10-01 11:41:32.000000000 +0200
+++ Linux-PAM/modules/pam_xauth/pam_xauth.c 2008-06-22 09:47:33.000000000 +0200
@@ -118,6 +118,7 @@
size_t j;
char *args[10];
const char *tmp;
+ int maxopened;
/* Drop privileges. */
setgid(gid);
setgroups(0, NULL);
@@ -129,7 +130,8 @@
* descriptors. */
dup2(ipipe[0], STDIN_FILENO);
dup2(opipe[1], STDOUT_FILENO);
- for (i = 0; i < sysconf(_SC_OPEN_MAX); i++) {
+ maxopened = (int)sysconf(_SC_OPEN_MAX);
+ for (i = 0; i < maxopened; i++) {
if ((i != STDIN_FILENO) && (i != STDOUT_FILENO)) {
close(i);
}