summaryrefslogtreecommitdiffstats
path: root/src/responder/pam/pamsrv_cmd.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/responder/pam/pamsrv_cmd.c')
-rw-r--r--src/responder/pam/pamsrv_cmd.c309
1 files changed, 0 insertions, 309 deletions
diff --git a/src/responder/pam/pamsrv_cmd.c b/src/responder/pam/pamsrv_cmd.c
index 69791a0e5..647f82762 100644
--- a/src/responder/pam/pamsrv_cmd.c
+++ b/src/responder/pam/pamsrv_cmd.c
@@ -22,7 +22,6 @@
#include <time.h>
#include "util/util.h"
-#include "util/sss_selinux.h"
#include "util/auth_utils.h"
#include "db/sysdb.h"
#include "confdb/confdb.h"
@@ -33,10 +32,6 @@
#include "responder/pam/pamsrv.h"
#include "responder/pam/pam_helpers.h"
#include "db/sysdb.h"
-#include "db/sysdb_selinux.h"
-#ifdef HAVE_SELINUX_LOGIN_DIR
-#include <selinux/selinux.h>
-#endif
enum pam_verbosity {
PAM_VERBOSITY_NO_MESSAGES = 0,
@@ -371,298 +366,6 @@ fail:
return ret;
}
-#ifdef HAVE_SELINUX_LOGIN_DIR
-
-#define ALL_SERVICES "*"
-#define selogin_path(mem_ctx, username) \
- talloc_asprintf(mem_ctx, "%s/logins/%s", selinux_policy_root(), username)
-
-static errno_t write_selinux_login_file(const char *username, char *string)
-{
- char *path = NULL;
- char *tmp_path = NULL;
- ssize_t written;
- int len;
- int fd = -1;
- mode_t oldmask;
- TALLOC_CTX *tmp_ctx;
- char *full_string = NULL;
- int enforce;
- errno_t ret = EOK;
-
- len = strlen(string);
- if (len == 0) {
- return EINVAL;
- }
-
- tmp_ctx = talloc_new(NULL);
- if (tmp_ctx == NULL) {
- DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_new() failed\n"));
- return ENOMEM;
- }
-
- path = selogin_path(tmp_ctx, username);
- if (path == NULL) {
- ret = ENOMEM;
- goto done;
- }
-
- tmp_path = talloc_asprintf(tmp_ctx, "%sXXXXXX", path);
- if (tmp_path == NULL) {
- ret = ENOMEM;
- goto done;
- }
-
- oldmask = umask(022);
- fd = mkstemp(tmp_path);
- ret = errno;
- umask(oldmask);
- if (fd < 0) {
- if (ret == ENOENT) {
- /* if selinux is disabled and selogin dir does not exist,
- * just ignore the error */
- if (selinux_getenforcemode(&enforce) == 0 && enforce == -1) {
- ret = EOK;
- goto done;
- }
-
- /* continue if we can't get enforce mode or selinux is enabled */
- }
-
- DEBUG(SSSDBG_OP_FAILURE, ("unable to create temp file [%s] "
- "for SELinux data [%d]: %s\n", tmp_path, ret, strerror(ret)));
- goto done;
- }
-
- full_string = talloc_asprintf(tmp_ctx, "%s:%s", ALL_SERVICES, string);
- if (full_string == NULL) {
- ret = ENOMEM;
- goto done;
- }
-
- len = strlen(full_string);
-
- errno = 0;
- written = sss_atomic_write_s(fd, full_string, len);
- if (written == -1) {
- ret = errno;
- DEBUG(SSSDBG_OP_FAILURE, ("writing to SELinux data file %s"
- "failed [%d]: %s", tmp_path, ret,
- strerror(ret)));
- goto done;
- }
-
- if (written != len) {
- DEBUG(SSSDBG_OP_FAILURE, ("Expected to write %d bytes, wrote %d",
- written, len));
- ret = EIO;
- goto done;
- }
-
- errno = 0;
- if (rename(tmp_path, path) < 0) {
- ret = errno;
- } else {
- ret = EOK;
- }
- close(fd);
- fd = -1;
-
-done:
- if (fd != -1) {
- close(fd);
- if (unlink(tmp_path) < 0) {
- DEBUG(SSSDBG_MINOR_FAILURE, ("Could not remove file [%s]",
- tmp_path));
- }
- }
-
- talloc_free(tmp_ctx);
- return ret;
-}
-
-static errno_t remove_selinux_login_file(const char *username)
-{
- char *path;
- errno_t ret;
-
- path = selogin_path(NULL, username);
- if (!path) return ENOMEM;
-
- errno = 0;
- ret = unlink(path);
- if (ret < 0) {
- ret = errno;
- if (ret == ENOENT) {
- /* Just return success if the file was not there */
- ret = EOK;
- } else {
- DEBUG(SSSDBG_OP_FAILURE,
- ("Could not remove login file %s [%d]: %s\n",
- path, ret, strerror(ret)));
- }
- }
-
- talloc_free(path);
- return ret;
-}
-
-static errno_t process_selinux_mappings(struct pam_auth_req *preq)
-{
- struct sysdb_ctx *sysdb;
- TALLOC_CTX *tmp_ctx;
- struct pam_data *pd = preq->pd;
- char *file_content = NULL;
- struct ldb_message **usermaps;
- struct ldb_message *config;
- const char *default_user = NULL;
- const char *tmp_str;
- char *order = NULL;
- char **order_array;
- errno_t ret, err;
- int i, j;
- size_t order_count;
- size_t len = 0;
-
- tmp_ctx = talloc_new(NULL);
- if (tmp_ctx == NULL) {
- ret = ENOMEM;
- goto done;
- }
-
- sysdb = preq->domain->sysdb;
- if (sysdb == NULL) {
- DEBUG(SSSDBG_FATAL_FAILURE, ("Fatal: Sysdb CTX not found for "
- "domain [%s]!\n", preq->domain->name));
- ret = EINVAL;
- goto done;
- }
-
- ret = sysdb_search_selinux_config(tmp_ctx, sysdb,
- preq->domain, NULL, &config);
- if (ret == ENOENT) {
- DEBUG(SSSDBG_TRACE_INTERNAL, ("No SELinux support found for the domain\n"));
- ret = EOK;
- goto done;
- } else if (ret != EOK) {
- goto done;
- }
-
- default_user = ldb_msg_find_attr_as_string(config,
- SYSDB_SELINUX_DEFAULT_USER,
- NULL);
- if (!default_user || default_user[0] == '\0') {
- /* Skip creating the maps altogether if there is no default
- * or empty default
- */
- ret = EOK;
- goto done;
- }
-
- tmp_str = ldb_msg_find_attr_as_string(config,
- SYSDB_SELINUX_DEFAULT_ORDER,
- NULL);
- if (tmp_str == NULL) {
- DEBUG(SSSDBG_OP_FAILURE, ("No map order given!\n"));
- ret = EINVAL;
- goto done;
- }
-
- order = talloc_strdup(tmp_ctx, tmp_str);
- if (order == NULL) {
- ret = ENOMEM;
- goto done;
- }
- len = strlen(order);
-
- /* The "order" string contains one or more SELinux user records
- * separated by $. Now we need to create an array of string from
- * this one string. First find out how many elements in the array
- * will be. This way only one alloc will be necessary for the array
- */
- order_count = 1;
- for (i = 0; i < len; i++) {
- if (order[i] == '$') order_count++;
- }
-
- order_array = talloc_array(tmp_ctx, char *, order_count);
- if (order_array == NULL) {
- ret = ENOMEM;
- goto done;
- }
-
- /* Now fill the array with pointers to the original string. Also
- * use binary zeros to make multiple string out of the one.
- */
- order_array[0] = order;
- order_count = 1;
- for (i = 0; i < len; i++) {
- if (order[i] == '$') {
- order[i] = '\0';
- order_array[order_count] = &order[i+1];
- order_count++;
- }
- }
-
- /* Fetch all maps applicable to the user who is currently logging in */
- ret = sysdb_search_selinux_usermap_by_username(tmp_ctx, sysdb,
- preq->domain, pd->user,
- &usermaps);
- if (ret != EOK && ret != ENOENT) {
- goto done;
- }
-
- /* If no maps match, we'll use the default SELinux user from the
- * config */
- file_content = talloc_strdup(tmp_ctx, default_user);
- if (file_content == NULL) {
- ret = ENOMEM;
- goto done;
- }
-
- /* Iterate through the order array and try to find SELinux users
- * in fetched maps. The order array contains all SELinux users
- * allowed in the domain in the same order they should appear
- * in the SELinux config file. If any user from the order array
- * is not in fetched user maps, it means it should not be allowed
- * for the user who is just logging in.
- *
- * Right now we have empty content of the SELinux config file,
- * we shall add only those SELinux users that are present both in
- * the order array and user maps applicable to the user who is
- * logging in.
- */
- for (i = 0; i < order_count; i++) {
- for (j = 0; usermaps[j] != NULL; j++) {
- tmp_str = sss_selinux_map_get_seuser(usermaps[j]);
-
- if (tmp_str && !strcasecmp(tmp_str, order_array[i])) {
- /* If file_content contained something, overwrite it.
- * This record has higher priority.
- */
- talloc_zfree(file_content);
- file_content = talloc_strdup(tmp_ctx, tmp_str);
- if (file_content == NULL) {
- ret = ENOMEM;
- goto done;
- }
- break;
- }
- }
- }
-
- ret = write_selinux_login_file(pd->user, file_content);
-done:
- if (!file_content) {
- err = remove_selinux_login_file(pd->user);
- /* Don't overwrite original error condition if there was one */
- if (ret == EOK) ret = err;
- }
- talloc_free(tmp_ctx);
- return ret;
-}
-#endif
-
static errno_t filter_responses(struct confdb_ctx *cdb,
struct response_data *resp_list)
{
@@ -863,18 +566,6 @@ static void pam_reply(struct pam_auth_req *preq)
return;
}
-#ifdef HAVE_SELINUX_LOGIN_DIR
- if (pd->cmd == SSS_PAM_ACCT_MGMT &&
- pd->pam_status == PAM_SUCCESS) {
- /* Try to fetch data from sysdb
- * (auth already passed -> we should have them) */
- ret = process_selinux_mappings(preq);
- if (ret != EOK) {
- pd->pam_status = PAM_SYSTEM_ERR;
- }
- }
-#endif
-
ret = sss_packet_new(cctx->creq, 0, sss_packet_get_cmd(cctx->creq->in),
&cctx->creq->out);
if (ret != EOK) {
generated by cgit (git 2.34.1) at 2024-05-20 18:34:17 +0000