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sssd/0009-krb5-Unify-function-to-create-ccache-files.patch

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Backport simplification of ccache management from 1.11.1 - Resolves: rhbz#1010553 - sssd setting KRB5CCNAME=(null) on login
2013-09-23 10:23:42 +00:00
From 1c022b3556f442f57326c4a3f250128b1bd232ae Mon Sep 17 00:00:00 2001
From: Simo Sorce <simo@redhat.com>
Date: Fri, 30 Aug 2013 17:25:01 -0400
Subject: [PATCH 09/14] krb5: Unify function to create ccache files
Only 2 types (FILE and DIR) need to precreate files or directories
on the file system, and the 2 functions were basically identical.
Consolidate all in one common function and use that function directly
where needed instead of using indirection.
Resolves:
https://fedorahosted.org/sssd/ticket/2061
---
src/providers/krb5/krb5_auth.c | 6 ++--
src/providers/krb5/krb5_utils.c | 71 ++++++++++-------------------------------
src/providers/krb5/krb5_utils.h | 14 ++------
src/tests/krb5_child-test.c | 6 ++--
src/tests/krb5_utils-tests.c | 40 +++++++++++------------
5 files changed, 43 insertions(+), 94 deletions(-)
diff --git a/src/providers/krb5/krb5_auth.c b/src/providers/krb5/krb5_auth.c
index 1ea179be3af48b16129aeb4c2d850a66244f7d08..d2c53f98c04cda01c2a8e0efe038f5cd5fa82839 100644
--- a/src/providers/krb5/krb5_auth.c
+++ b/src/providers/krb5/krb5_auth.c
@@ -333,9 +333,9 @@ static errno_t krb5_auth_prepare_ccache_name(struct krb5child_req *kr,
return EINVAL;
}
- ret = kr->cc_be->create(kr->ccname,
- kr->krb5_ctx->illegal_path_re,
- kr->uid, kr->gid, private_path);
+ ret = sss_krb5_precreate_ccache(kr->ccname,
+ kr->krb5_ctx->illegal_path_re,
+ kr->uid, kr->gid, private_path);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("ccache creation failed.\n"));
return ret;
diff --git a/src/providers/krb5/krb5_utils.c b/src/providers/krb5/krb5_utils.c
index c4849e74bd43b096b585398970f5b81e946212e9..83e61e14ecc116b9556231c5d8a0f55b63260c77 100644
--- a/src/providers/krb5/krb5_utils.c
+++ b/src/providers/krb5/krb5_utils.c
@@ -722,19 +722,31 @@ done:
return EOK;
}
-static errno_t
-create_ccache_dir_head(const char *parent, pcre *illegal_re,
- uid_t uid, gid_t gid, bool private_path)
+errno_t sss_krb5_precreate_ccache(const char *ccname, pcre *illegal_re,
+ uid_t uid, gid_t gid, bool private_path)
{
+ TALLOC_CTX *tmp_ctx = NULL;
+ const char *filename;
char *ccdirname;
- TALLOC_CTX *tmp_ctx = NULL;
char *end;
errno_t ret;
+ if (ccname[0] == '/') {
+ filename = ccname;
+ } else if (strncmp(ccname, "FILE:", 5) == 0) {
+ filename = ccname + 5;
+ } else if (strncmp(ccname, "DIR:", 4) == 0) {
+ filename = ccname + 4;
+ } else {
+ /* only FILE and DIR types need precreation so far, we ignore any
+ * other type */
+ return EOK;
+ }
+
tmp_ctx = talloc_new(NULL);
if (!tmp_ctx) return ENOMEM;
- ccdirname = talloc_strdup(tmp_ctx, parent);
+ ccdirname = talloc_strdup(tmp_ctx, filename);
if (ccdirname == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_strdup failed.\n"));
ret = ENOMEM;
@@ -1066,72 +1078,23 @@ get_cc_be_ops_ccache(const char *ccache)
}
/*======== Operations on the FILE: back end ========*/
-errno_t
-cc_file_create(const char *location, pcre *illegal_re,
- uid_t uid, gid_t gid, bool private_path)
-{
- const char *filename;
-
- filename = sss_krb5_residual_check_type(location, SSS_KRB5_TYPE_FILE);
- if (filename == NULL) {
- DEBUG(SSSDBG_OP_FAILURE, ("Bad ccache type %s\n", location));
- return EINVAL;
- }
-
- return create_ccache_dir_head(filename, illegal_re, uid, gid, private_path);
-}
struct sss_krb5_cc_be file_cc = {
.type = SSS_KRB5_TYPE_FILE,
- .create = cc_file_create,
};
#ifdef HAVE_KRB5_CC_COLLECTION
/*======== Operations on the DIR: back end ========*/
-errno_t
-cc_dir_create(const char *location, pcre *illegal_re,
- uid_t uid, gid_t gid, bool private_path)
-{
- const char *dir_name;
-
- dir_name = sss_krb5_residual_check_type(location, SSS_KRB5_TYPE_DIR);
- if (dir_name == NULL) {
- DEBUG(SSSDBG_CRIT_FAILURE, ("Bad residual type\n"));
- return EINVAL;
- }
-
- return create_ccache_dir_head(dir_name, illegal_re, uid, gid, private_path);
-}
struct sss_krb5_cc_be dir_cc = {
.type = SSS_KRB5_TYPE_DIR,
- .create = cc_dir_create,
};
/*======== Operations on the KEYRING: back end ========*/
-errno_t
-cc_keyring_create(const char *location, pcre *illegal_re,
- uid_t uid, gid_t gid, bool private_path)
-{
- const char *residual;
-
- residual = sss_krb5_residual_check_type(location, SSS_KRB5_TYPE_KEYRING);
- if (residual == NULL) {
- DEBUG(SSSDBG_OP_FAILURE, ("Bad ccache type %s\n", location));
- return EINVAL;
- }
-
- /* No special steps are needed to create a kernel keyring.
- * Everything is handled in libkrb5.
- */
- return EOK;
-}
-
struct sss_krb5_cc_be keyring_cc = {
.type = SSS_KRB5_TYPE_KEYRING,
- .create = cc_keyring_create,
};
#endif /* HAVE_KRB5_CC_COLLECTION */
diff --git a/src/providers/krb5/krb5_utils.h b/src/providers/krb5/krb5_utils.h
index b364f87aa6e6f0070e8acb5559ee92f2e001e0a5..5f720335aab1ac6e493843ac197c5af881a9b998 100644
--- a/src/providers/krb5/krb5_utils.h
+++ b/src/providers/krb5/krb5_utils.h
@@ -42,15 +42,9 @@ errno_t check_if_cached_upn_needs_update(struct sysdb_ctx *sysdb,
const char *user,
const char *upn);
-/* Operations on a credential cache */
-typedef errno_t (*cc_be_create_fn)(const char *location, pcre *illegal_re,
- uid_t uid, gid_t gid, bool private_path);
-
/* A ccache back end */
struct sss_krb5_cc_be {
enum sss_krb5_cc_type type;
-
- cc_be_create_fn create;
};
extern struct sss_krb5_cc_be file_cc;
@@ -58,9 +52,6 @@ extern struct sss_krb5_cc_be file_cc;
errno_t create_ccache_dir(const char *dirname, pcre *illegal_re,
uid_t uid, gid_t gid, bool private_path);
-errno_t cc_file_create(const char *filename, pcre *illegal_re,
- uid_t uid, gid_t gid, bool private_path);
-
struct sss_krb5_cc_be *get_cc_be_ops(enum sss_krb5_cc_type type);
struct sss_krb5_cc_be *get_cc_be_ops_ccache(const char *ccache);
@@ -76,6 +67,8 @@ errno_t switch_creds(TALLOC_CTX *mem_ctx,
struct sss_creds **saved_creds);
errno_t restore_creds(struct sss_creds *saved_creds);
+errno_t sss_krb5_precreate_ccache(const char *ccname, pcre *illegal_re,
+ uid_t uid, gid_t gid, bool private_path);
errno_t sss_krb5_cc_destroy(const char *ccname, uid_t uid, gid_t gid);
errno_t sss_krb5_check_ccache_princ(uid_t uid, gid_t gid,
const char *ccname, const char *principal);
@@ -90,9 +83,6 @@ errno_t get_ccache_file_data(const char *ccache_file, const char *client_name,
extern struct sss_krb5_cc_be dir_cc;
extern struct sss_krb5_cc_be keyring_cc;
-errno_t cc_dir_create(const char *location, pcre *illegal_re,
- uid_t uid, gid_t gid, bool private_path);
-
#endif /* HAVE_KRB5_CC_COLLECTION */
diff --git a/src/tests/krb5_child-test.c b/src/tests/krb5_child-test.c
index dff62ab64dd1948d20da6b640a0570ee8ea6b11d..5ea30014f9c8f748e85506627b7f40d72b913b1b 100644
--- a/src/tests/krb5_child-test.c
+++ b/src/tests/krb5_child-test.c
@@ -287,9 +287,9 @@ create_dummy_req(TALLOC_CTX *mem_ctx, const char *user,
DEBUG(SSSDBG_FUNC_DATA, ("ccname [%s] uid [%llu] gid [%llu]\n",
kr->ccname, kr->uid, kr->gid));
- ret = kr->krb5_ctx->cc_be->create(kr->ccname,
- kr->krb5_ctx->illegal_path_re,
- kr->uid, kr->gid, private);
+ ret = sss_krb5_precreate_ccache(kr->ccname,
+ kr->krb5_ctx->illegal_path_re,
+ kr->uid, kr->gid, private);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("create_ccache_dir failed.\n"));
goto fail;
diff --git a/src/tests/krb5_utils-tests.c b/src/tests/krb5_utils-tests.c
index 4715774ff189700bc1cbeb6c90f4438445a594b0..ea0292569135e0fc22a44251cfc4e8719a15837f 100644
--- a/src/tests/krb5_utils-tests.c
+++ b/src/tests/krb5_utils-tests.c
@@ -117,14 +117,14 @@ START_TEST(test_pub_ccache_dir)
ret = chmod(testpath, 0754);
fail_unless(ret == EOK, "chmod failed.");
- ret = cc_file_create(filename, NULL, 12345, 12345, false);
- fail_unless(ret == EINVAL, "cc_file_create does not return EINVAL "
+ ret = sss_krb5_precreate_ccache(filename, NULL, 12345, 12345, false);
+ fail_unless(ret == EINVAL, "sss_krb5_precreate_ccache does not return EINVAL "
"while x-bit is missing.");
ret = chmod(testpath, 0755);
fail_unless(ret == EOK, "chmod failed.");
- ret = cc_file_create(filename, NULL, 12345, 12345, false);
- fail_unless(ret == EOK, "cc_file_create failed.");
+ ret = sss_krb5_precreate_ccache(filename, NULL, 12345, 12345, false);
+ fail_unless(ret == EOK, "sss_krb5_precreate_ccache failed.");
check_dir(subdirname, 0, 0, 01777);
RMDIR(subdirname);
@@ -158,7 +158,7 @@ START_TEST(test_pub_ccache_dir_in_user_dir)
filename = talloc_asprintf(tmp_ctx, "%s/ccfile", subdirname);
fail_unless(filename != NULL, "talloc_asprintf failed.");
- ret = cc_file_create(filename, NULL, 12345, 12345, false);
+ ret = sss_krb5_precreate_ccache(filename, NULL, 12345, 12345, false);
fail_unless(ret == EINVAL, "Creating public ccache dir in user dir "
"does not failed with EINVAL.");
@@ -193,14 +193,14 @@ START_TEST(test_priv_ccache_dir)
ret = chmod(testpath, 0754);
fail_unless(ret == EOK, "chmod failed.");
- ret = cc_file_create(filename, NULL, uid, gid, true);
- fail_unless(ret == EINVAL, "cc_file_create does not return EINVAL "
+ ret = sss_krb5_precreate_ccache(filename, NULL, uid, gid, true);
+ fail_unless(ret == EINVAL, "sss_krb5_precreate_ccache does not return EINVAL "
"while x-bit is missing.");
ret = chmod(testpath, 0755);
fail_unless(ret == EOK, "chmod failed.");
- ret = cc_file_create(filename, NULL, uid, gid, true);
- fail_unless(ret == EOK, "cc_file_create failed.");
+ ret = sss_krb5_precreate_ccache(filename, NULL, uid, gid, true);
+ fail_unless(ret == EOK, "sss_krb5_precreate_ccache failed.");
check_dir(subdir, uid, gid, 0700);
RMDIR(subdir);
@@ -248,14 +248,14 @@ START_TEST(test_private_ccache_dir_in_user_dir)
ret = chmod(user_dir, 0600);
fail_unless(ret == EOK, "chmod failed.");
- ret = cc_file_create(filename, NULL, uid, gid, true);
- fail_unless(ret == EINVAL, "cc_file_create does not return EINVAL "
+ ret = sss_krb5_precreate_ccache(filename, NULL, uid, gid, true);
+ fail_unless(ret == EINVAL, "sss_krb5_precreate_ccache does not return EINVAL "
"while x-bit is missing.");
ret = chmod(user_dir, 0700);
fail_unless(ret == EOK, "chmod failed.");
- ret = cc_file_create(filename, NULL, uid, gid, true);
- fail_unless(ret == EOK, "cc_file_create failed.");
+ ret = sss_krb5_precreate_ccache(filename, NULL, uid, gid, true);
+ fail_unless(ret == EOK, "sss_krb5_precreate_ccache failed.");
check_dir(dn3, uid, gid, 0700);
RMDIR(dn3);
@@ -292,7 +292,7 @@ START_TEST(test_private_ccache_dir_in_wrong_user_dir)
filename = talloc_asprintf(tmp_ctx, "%s/ccfile", subdirname);
fail_unless(filename != NULL, "talloc_asprintf failed.");
- ret = cc_file_create(filename, NULL, 12345, 12345, true);
+ ret = sss_krb5_precreate_ccache(filename, NULL, 12345, 12345, true);
fail_unless(ret == EINVAL, "Creating private ccache dir in wrong user "
"dir does not failed with EINVAL.");
@@ -357,7 +357,6 @@ START_TEST(test_illegal_patterns)
}
END_TEST
-#ifdef HAVE_KRB5_CC_COLLECTION
START_TEST(test_cc_dir_create)
{
char *residual;
@@ -386,8 +385,8 @@ START_TEST(test_cc_dir_create)
residual = talloc_asprintf(tmp_ctx, "DIR:%s/%s", dirname, "ccdir");
fail_unless(residual != NULL, "talloc_asprintf failed.");
- ret = cc_dir_create(residual, illegal_re, uid, gid, true);
- fail_unless(ret == EOK, "cc_dir_create failed\n");
+ ret = sss_krb5_precreate_ccache(residual, illegal_re, uid, gid, true);
+ fail_unless(ret == EOK, "sss_krb5_precreate_ccache failed\n");
ret = rmdir(dirname);
if (ret < 0) ret = errno;
fail_unless(ret == 0, "Cannot remove %s: %s\n", dirname, strerror(ret));
@@ -399,8 +398,8 @@ START_TEST(test_cc_dir_create)
residual = talloc_asprintf(tmp_ctx, "DIR:%s/%s", dirname, "ccdir/");
fail_unless(residual != NULL, "talloc_asprintf failed.");
- ret = cc_dir_create(residual, illegal_re, uid, gid, true);
- fail_unless(ret == EOK, "cc_dir_create failed\n");
+ ret = sss_krb5_precreate_ccache(residual, illegal_re, uid, gid, true);
+ fail_unless(ret == EOK, "sss_krb5_precreate_ccache failed\n");
ret = rmdir(dirname);
if (ret < 0) ret = errno;
fail_unless(ret == 0, "Cannot remove %s: %s\n", dirname, strerror(ret));
@@ -408,7 +407,6 @@ START_TEST(test_cc_dir_create)
free(cwd);
}
END_TEST
-#endif /* HAVE_KRB5_CC_COLLECTION */
void setup_talloc_context(void)
@@ -774,9 +772,7 @@ Suite *krb5_utils_suite (void)
tcase_add_checked_fixture (tc_create_dir, setup_create_dir,
teardown_create_dir);
tcase_add_test (tc_create_dir, test_illegal_patterns);
-#ifdef HAVE_KRB5_CC_COLLECTION
tcase_add_test (tc_create_dir, test_cc_dir_create);
-#endif /* HAVE_KRB5_CC_COLLECTION */
if (getuid() == 0) {
tcase_add_test (tc_create_dir, test_priv_ccache_dir);
tcase_add_test (tc_create_dir, test_private_ccache_dir_in_user_dir);
--
1.8.3.1
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