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-rw-r--r--source4/libgpo/gpo.h13
-rw-r--r--source4/libgpo/gpo_ldap.c249
-rw-r--r--source4/utils/net/net_gpo.c98
3 files changed, 322 insertions, 38 deletions
diff --git a/source4/libgpo/gpo.h b/source4/libgpo/gpo.h
index 1e51e5250a..2e58094608 100644
--- a/source4/libgpo/gpo.h
+++ b/source4/libgpo/gpo.h
@@ -29,6 +29,10 @@
#define GPO_FLAG_USER_DISABLE (1 << 0)
#define GPO_FLAG_MACHINE_DISABLE (1 << 1)
+enum gpo_inheritance {
+ GPO_INHERIT = 0,
+ GPO_BLOCK_INHERITANCE = 1,
+};
struct gp_context {
struct ldb_context *ldb_ctx;
@@ -47,13 +51,6 @@ struct gp_object {
struct security_descriptor *security_descriptor;
};
-struct gp_hierarchy_object {
- enum {
- GPO_INHERIT = 0,
- GPO_BLOCK_INHERITANCE = 1,
- } inheritance;
- struct gp_link **gplinks;
-};
struct gp_link {
uint32_t options;
@@ -72,6 +69,8 @@ NTSTATUS gp_init(TALLOC_CTX *mem_ctx,
NTSTATUS gp_list_all_gpos(struct gp_context *gp_ctx, struct gp_object ***ret);
NTSTATUS gp_get_gpo_info(struct gp_context *gp_ctx, const char *name, struct gp_object **ret);
NTSTATUS gp_get_gplinks(struct gp_context *gp_ctx, const char *req_dn, struct gp_link ***ret);
+NTSTATUS gp_list_gpos(struct gp_context *gp_ctx, struct security_token *token, const char ***ret);
+
NTSTATUS gp_get_gplink_options(TALLOC_CTX *mem_ctx, uint32_t flags, const char ***ret);
NTSTATUS gp_get_gpo_flags(TALLOC_CTX *mem_ctx, uint32_t flags, const char ***ret);
diff --git a/source4/libgpo/gpo_ldap.c b/source4/libgpo/gpo_ldap.c
index 96a746c72b..4c44e83cb9 100644
--- a/source4/libgpo/gpo_ldap.c
+++ b/source4/libgpo/gpo_ldap.c
@@ -25,6 +25,10 @@
#include "../librpc/gen_ndr/nbt.h"
#include "libcli/libcli.h"
#include "libnet/libnet.h"
+#include "../librpc/gen_ndr/ndr_security.h"
+#include "../libcli/security/dom_sid.h"
+#include "libcli/security/security.h"
+#include "../lib/talloc/talloc.h"
#include "gpo.h"
struct gpo_stringmap {
@@ -51,7 +55,9 @@ static NTSTATUS parse_gpo(TALLOC_CTX *mem_ctx, struct ldb_message *msg, struct g
{
unsigned int i;
struct gp_object *gpo = talloc(mem_ctx, struct gp_object);
- gpo->dn = ldb_dn_get_linearized(msg->dn);
+ enum ndr_err_code ndr_err;
+
+ gpo->dn = talloc_steal(mem_ctx, ldb_dn_get_linearized(msg->dn));
DEBUG(9, ("Parsing GPO LDAP data for %s\n", gpo->dn));
for (i = 0; i < msg->num_elements; i++) {
@@ -86,6 +92,18 @@ static NTSTATUS parse_gpo(TALLOC_CTX *mem_ctx, struct ldb_message *msg, struct g
gpo->file_sys_path = talloc_strdup(gpo, (char *)element->values[0].data);
DEBUG(10, ("Found file system path: %s\n", gpo->file_sys_path));
}
+ if (strcmp(element->name, "nTSecurityDescriptor") == 0) {
+ gpo->security_descriptor = talloc(mem_ctx, struct security_descriptor);
+ ndr_err = ndr_pull_struct_blob(&element->values[0],
+ mem_ctx,
+ NULL,
+ gpo->security_descriptor,
+ (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ndr_map_error2ntstatus(ndr_err);
+ }
+ DEBUG(10, ("Found security descriptor.\n"));
+ }
}
*ret = gpo;
@@ -162,8 +180,9 @@ NTSTATUS gp_init(TALLOC_CTX *mem_ctx,
/* Connect to ldap://DC_NAME with all relevant contexts*/
url = talloc_asprintf(mem_ctx, "ldap://%s", io->out.dcs[0].name);
ldb_ctx = ldb_wrap_connect(mem_ctx, net_ctx->event_ctx, lp_ctx,
- url, NULL, net_ctx->cred, 0);
+ url, NULL, net_ctx->cred, 0);
if (ldb_ctx == NULL) {
+ DEBUG(0, ("Can't connect to DC's LDAP with url %s\n", url));
return NT_STATUS_UNSUCCESSFUL;
}
@@ -187,6 +206,7 @@ NTSTATUS gp_list_all_gpos(struct gp_context *gp_ctx, struct gp_object ***ret)
struct ldb_dn *dn;
struct gp_object **gpo;
unsigned int i; /* same as in struct ldb_result */
+ const char **attrs;
/* Create a forked memory context, as a base for everything here */
mem_ctx = talloc_new(gp_ctx);
@@ -202,7 +222,16 @@ NTSTATUS gp_list_all_gpos(struct gp_context *gp_ctx, struct gp_object ***ret)
DEBUG(10, ("Searching for policies in DN: %s\n", ldb_dn_get_linearized(dn)));
- rv = ldb_search(gp_ctx->ldb_ctx, mem_ctx, &result, dn, LDB_SCOPE_ONELEVEL, NULL, "(objectClass=groupPolicyContainer)");
+ attrs = talloc_array(mem_ctx, const char *, 7);
+ attrs[0] = "nTSecurityDescriptor";
+ attrs[1] = "versionNumber";
+ attrs[2] = "flags";
+ attrs[3] = "name";
+ attrs[4] = "displayName";
+ attrs[5] = "gPCFileSysPath";
+ attrs[6] = NULL;
+
+ rv = ldb_search(gp_ctx->ldb_ctx, mem_ctx, &result, dn, LDB_SCOPE_ONELEVEL, attrs, "(objectClass=groupPolicyContainer)");
if (rv != LDB_SUCCESS) {
DEBUG(0, ("LDB search failed: %s\n%s\n", ldb_strerror(rv),ldb_errstring(gp_ctx->ldb_ctx)));
talloc_free(mem_ctx);
@@ -227,7 +256,7 @@ NTSTATUS gp_list_all_gpos(struct gp_context *gp_ctx, struct gp_object ***ret)
return NT_STATUS_OK;
}
-NTSTATUS gp_get_gpo_info(struct gp_context *gp_ctx, const char *name, struct gp_object **ret)
+NTSTATUS gp_get_gpo_info(struct gp_context *gp_ctx, const char *dn_str, struct gp_object **ret)
{
struct ldb_result *result;
struct ldb_dn *dn;
@@ -235,27 +264,30 @@ NTSTATUS gp_get_gpo_info(struct gp_context *gp_ctx, const char *name, struct gp_
int rv;
NTSTATUS status;
TALLOC_CTX *mem_ctx;
+ const char **attrs;
/* Create a forked memory context, as a base for everything here */
mem_ctx = talloc_new(gp_ctx);
- /* Create full ldb dn of the policies base object */
- dn = ldb_get_default_basedn(gp_ctx->ldb_ctx);
- rv = ldb_dn_add_child(dn, ldb_dn_new(mem_ctx, gp_ctx->ldb_ctx, "CN=Policies,CN=System"));
- if (!rv) {
- DEBUG(0, ("Can't append subtree to DN\n"));
- talloc_free(mem_ctx);
- return NT_STATUS_UNSUCCESSFUL;
- }
+ /* Create an ldb dn struct for the dn string */
+ dn = ldb_dn_new(mem_ctx, gp_ctx->ldb_ctx, dn_str);
+
+ attrs = talloc_array(mem_ctx, const char *, 7);
+ attrs[0] = "nTSecurityDescriptor";
+ attrs[1] = "versionNumber";
+ attrs[2] = "flags";
+ attrs[3] = "name";
+ attrs[4] = "displayName";
+ attrs[5] = "gPCFileSysPath";
+ attrs[6] = NULL;
rv = ldb_search(gp_ctx->ldb_ctx,
- mem_ctx,
- &result,
- dn,
- LDB_SCOPE_ONELEVEL,
- NULL,
- "(&(objectClass=groupPolicyContainer)(name=%s))",
- name);
+ mem_ctx,
+ &result,
+ dn,
+ LDB_SCOPE_BASE,
+ attrs,
+ "objectClass=groupPolicyContainer");
if (rv != LDB_SUCCESS) {
DEBUG(0, ("LDB search failed: %s\n%s\n", ldb_strerror(rv),ldb_errstring(gp_ctx->ldb_ctx)));
talloc_free(mem_ctx);
@@ -264,7 +296,7 @@ NTSTATUS gp_get_gpo_info(struct gp_context *gp_ctx, const char *name, struct gp_
/* We expect exactly one record */
if (result->count != 1) {
- DEBUG(0, ("Could not find GPC with name %s\n", name));
+ DEBUG(0, ("Could not find GPC with dn %s\n", dn_str));
talloc_free(mem_ctx);
return NT_STATUS_NOT_FOUND;
}
@@ -290,6 +322,7 @@ static NTSTATUS parse_gplink (TALLOC_CTX *mem_ctx, const char *gplink_str, struc
char *buf, *end;
gplinks = talloc_array(mem_ctx, struct gp_link *, 1);
+ gplinks[0] = NULL;
/* Assuming every gPLink starts with "[LDAP://" */
start = 8;
@@ -299,19 +332,20 @@ static NTSTATUS parse_gplink (TALLOC_CTX *mem_ctx, const char *gplink_str, struc
gplinks = talloc_realloc(mem_ctx, gplinks, struct gp_link *, idx+2);
gplinks[idx] = talloc(mem_ctx, struct gp_link);
gplinks[idx]->dn = talloc_strndup(mem_ctx,
- gplink_str + start,
- pos - start);
+ gplink_str + start,
+ pos - start);
for (start = pos + 1; gplink_str[pos] != ']'; pos++);
- buf = talloc_strndup(mem_ctx, gplink_str + start, pos - start);
-
+ buf = talloc_strndup(gplinks, gplink_str + start, pos - start);
gplinks[idx]->options = (uint32_t) strtoll(buf, &end, 0);
+ talloc_free(buf);
/* Set the last entry in the array to be NULL */
gplinks[idx + 1] = NULL;
- /* Increment the array index, the string position, and the start reference */
+ /* Increment the array index, the string position past
+ the next "[LDAP://", and set the start reference */
idx++;
pos += 9;
start = pos;
@@ -341,7 +375,7 @@ NTSTATUS gp_get_gplinks(struct gp_context *gp_ctx, const char *req_dn, struct gp
rv = ldb_search(gp_ctx->ldb_ctx, mem_ctx, &result, dn, LDB_SCOPE_BASE, NULL, "(objectclass=*)");
if (rv != LDB_SUCCESS) {
- DEBUG(0, ("LDB search failed: %s\n%s\n", ldb_strerror(rv),ldb_errstring(gp_ctx->ldb_ctx)));
+ DEBUG(0, ("LDB search failed: %s\n%s\n", ldb_strerror(rv), ldb_errstring(gp_ctx->ldb_ctx)));
talloc_free(mem_ctx);
return NT_STATUS_UNSUCCESSFUL;
}
@@ -364,10 +398,171 @@ NTSTATUS gp_get_gplinks(struct gp_context *gp_ctx, const char *req_dn, struct gp
status = parse_gplink(gp_ctx, gplink_str, &gplinks);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Failed to parse gPLinks\n"));
+ DEBUG(0, ("Failed to parse gPLink\n"));
return status;
}
+ talloc_free(mem_ctx);
+
*ret = gplinks;
return NT_STATUS_OK;
}
+
+NTSTATUS gp_list_gpos(struct gp_context *gp_ctx, struct security_token *token, const char ***ret)
+{
+ TALLOC_CTX *mem_ctx;
+ const char **gpos;
+ struct ldb_result *result;
+ const char *sid;
+ struct ldb_dn *dn;
+ struct ldb_message_element *element;
+ int inherit;
+ const char *attrs[] = { "objectClass", NULL };
+ int rv;
+ NTSTATUS status;
+ unsigned int count = 0;
+ unsigned int i;
+ enum {
+ ACCOUNT_TYPE_USER = 0,
+ ACCOUNT_TYPE_MACHINE = 1
+ } account_type;
+
+ /* Create a forked memory context, as a base for everything here */
+ mem_ctx = talloc_new(gp_ctx);
+
+ sid = dom_sid_string(mem_ctx, token->user_sid);
+
+ /* Find the user DN and objectclass via the sid from the security token */
+ rv = ldb_search(gp_ctx->ldb_ctx,
+ mem_ctx,
+ &result,
+ ldb_get_default_basedn(gp_ctx->ldb_ctx),
+ LDB_SCOPE_SUBTREE,
+ attrs,
+ "(&(objectclass=user)(objectSid=%s))", sid);
+ if (rv != LDB_SUCCESS) {
+ DEBUG(0, ("LDB search failed: %s\n%s\n", ldb_strerror(rv),
+ ldb_errstring(gp_ctx->ldb_ctx)));
+ talloc_free(mem_ctx);
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ if (result->count != 1) {
+ DEBUG(0, ("Could not find user with sid %s.\n", sid));
+ talloc_free(mem_ctx);
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ DEBUG(10,("Found DN for this user: %s\n", ldb_dn_get_linearized(result->msgs[0]->dn)));
+
+ element = ldb_msg_find_element(result->msgs[0], "objectClass");
+
+ /* We need to know if this account is a user or machine. */
+ account_type = ACCOUNT_TYPE_USER;
+ for (i = 0; i < element->num_values; i++) {
+ if (strcmp((char *)element->values[i].data, "computer") == 0) {
+ account_type = ACCOUNT_TYPE_MACHINE;
+ DEBUG(10, ("This user is a machine\n"));
+ }
+ }
+
+ gpos = talloc_array(gp_ctx, const char *, 1);
+ gpos[0] = NULL;
+
+ /* Walk through the containers until we hit the root */
+ inherit = 1;
+ dn = ldb_dn_get_parent(mem_ctx, result->msgs[0]->dn);
+ while (ldb_dn_compare_base(ldb_get_default_basedn(gp_ctx->ldb_ctx), dn) == 0) {
+ const char *gpo_attrs[] = { "gPLink", "gPOptions", NULL };
+ struct gp_link **gplinks;
+ enum gpo_inheritance gpoptions;
+
+ DEBUG(10, ("Getting gPLinks for DN: %s\n", ldb_dn_get_linearized(dn)));
+
+ /* Get the gPLink and gPOptions attributes from the container */
+ rv = ldb_search(gp_ctx->ldb_ctx,
+ mem_ctx,
+ &result,
+ dn,
+ LDB_SCOPE_BASE,
+ gpo_attrs,
+ "objectclass=*");
+ if (rv != LDB_SUCCESS) {
+ DEBUG(0, ("LDB search failed: %s\n%s\n", ldb_strerror(rv),
+ ldb_errstring(gp_ctx->ldb_ctx)));
+ talloc_free(mem_ctx);
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ /* Parse the gPLink attribute, put it into a nice struct array */
+ status = parse_gplink(mem_ctx, ldb_msg_find_attr_as_string(result->msgs[0], "gPLink", ""), &gplinks);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to parse gPLink\n"));
+ talloc_free(mem_ctx);
+ return status;
+ }
+
+ /* Check all group policy links on this container */
+ for (i = 0; gplinks[i] != NULL; i++) {
+ struct gp_object *gpo;
+ uint32_t access_granted;
+
+ /* If inheritance was blocked at a higher level and this
+ * gplink is not enforced, it should not be applied */
+ if (!inherit && !(gplinks[i]->options & GPLINK_OPT_ENFORCE))
+ continue;
+
+ /* Don't apply disabled links */
+ if (gplinks[i]->options & GPLINK_OPT_DISABLE)
+ continue;
+
+ /* Get GPO information */
+ status = gp_get_gpo_info(gp_ctx, gplinks[i]->dn, &gpo);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to get gpo information for %s\n", gplinks[i]->dn));
+ talloc_free(mem_ctx);
+ return status;
+ }
+
+ /* If the account does not have read access, this GPO does not apply
+ * to this account */
+ status = sec_access_check(gpo->security_descriptor,
+ token,
+ (SEC_STD_READ_CONTROL | SEC_ADS_LIST | SEC_ADS_READ_PROP),
+ &access_granted);
+ if (!NT_STATUS_IS_OK(status)) {
+ continue;
+ }
+
+ /* If the account is a user and the GPO has user disabled flag, or
+ * a machine and the GPO has machine disabled flag, this GPO does
+ * not apply to this account */
+ if ((account_type == ACCOUNT_TYPE_USER &&
+ (gpo->flags & GPO_FLAG_USER_DISABLE)) ||
+ (account_type == ACCOUNT_TYPE_MACHINE &&
+ (gpo->flags & GPO_FLAG_MACHINE_DISABLE))) {
+ continue;
+ }
+
+ /* Add the GPO to the list */
+ gpos = talloc_realloc(gp_ctx, gpos, const char *, count+2);
+ gpos[count] = talloc_strdup(gp_ctx, gplinks[i]->dn);
+ gpos[count+1] = NULL;
+ count++;
+
+ /* Clean up */
+ talloc_free(gpo);
+ }
+
+ /* If inheritance is blocked, then we should only add enforced gPLinks
+ * higher up */
+ gpoptions = ldb_msg_find_attr_as_uint(result->msgs[0], "gPOptions", 0);
+ if (gpoptions == GPO_BLOCK_INHERITANCE) {
+ inherit = 0;
+ }
+ dn = ldb_dn_get_parent(mem_ctx, dn);
+ }
+
+ talloc_free(mem_ctx);
+
+ *ret = gpos;
+ return NT_STATUS_OK;
+}
diff --git a/source4/utils/net/net_gpo.c b/source4/utils/net/net_gpo.c
index fc25c30fe6..4f9414bdd8 100644
--- a/source4/utils/net/net_gpo.c
+++ b/source4/utils/net/net_gpo.c
@@ -23,6 +23,9 @@
#include "includes.h"
#include "utils/net/net.h"
+#include "lib/ldb/include/ldb.h"
+#include "auth/auth.h"
+#include "param/param.h"
#include "libgpo/gpo.h"
static int net_gpo_list_all_usage(struct net_context *ctx, int argc, const char **argv)
@@ -78,7 +81,7 @@ static int net_gpo_list_all(struct net_context *ctx, int argc, const char **argv
static int net_gpo_get_gpo_usage(struct net_context *ctx, int argc, const char **argv)
{
- d_printf("Syntax: net gpo getgpo <name> [options]\n");
+ d_printf("Syntax: net gpo getgpo <dn> [options]\n");
d_printf("For a list of available options, please type net gpo getgpo --help\n");
return 0;
}
@@ -131,8 +134,8 @@ static int net_gpo_get_gpo(struct net_context *ctx, int argc, const char **argv)
static int net_gpo_link_get_usage(struct net_context *ctx, int argc, const char **argv)
{
- d_printf("Syntax: net gpo linkget <name> [options]\n");
- d_printf("For a list of available options, please type net gpo get --help\n");
+ d_printf("Syntax: net gpo linkget <dn> [options]\n");
+ d_printf("For a list of available options, please type net gpo linkget --help\n");
return 0;
}
@@ -182,6 +185,93 @@ static int net_gpo_link_get(struct net_context *ctx, int argc, const char **argv
return 0;
}
+static int net_gpo_list_usage(struct net_context *ctx, int argc, const char **argv)
+{
+ d_printf("Syntax: net gpo list <username> [options]\n");
+ d_printf("For a list of available options, please type net gpo list --help\n");
+ return 0;
+}
+
+static int net_gpo_list(struct net_context *ctx, int argc, const char **argv)
+{
+ struct gp_context *gp_ctx;
+ struct ldb_result *result;
+ struct auth_serversupplied_info *server_info;
+ struct auth_session_info *session_info;
+ DATA_BLOB dummy = { NULL, 0 };
+ const char **gpos;
+ NTSTATUS status;
+ int rv;
+ unsigned int i;
+
+ if (argc != 1) {
+ return net_gpo_list_usage(ctx, argc, argv);
+ }
+ status = gp_init(ctx, ctx->lp_ctx, ctx->credentials, ctx->event_ctx, &gp_ctx);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to connect to DC's LDAP: %s\n", get_friendly_nt_error_msg(status)));
+ return 1;
+ }
+
+ rv = ldb_search(gp_ctx->ldb_ctx,
+ gp_ctx,
+ &result,
+ ldb_get_default_basedn(gp_ctx->ldb_ctx),
+ LDB_SCOPE_SUBTREE,
+ NULL,
+ "(&(objectClass=user)(sAMAccountName=%s))", argv[0]);
+ if (rv != LDB_SUCCESS) {
+ DEBUG(0, ("LDB search failed: %s\n%s\n", ldb_strerror(rv),ldb_errstring(gp_ctx->ldb_ctx)));
+ talloc_free(gp_ctx);
+ return 1;
+ }
+
+ /* We expect exactly one record */
+ if (result->count != 1) {
+ DEBUG(0, ("Could not find SAM account with name %s\n", argv[0]));
+ talloc_free(gp_ctx);
+ return 1;
+ }
+
+ status = authsam_make_server_info(gp_ctx,
+ gp_ctx->ldb_ctx,
+ lp_netbios_name(gp_ctx->lp_ctx),
+ lp_sam_name(gp_ctx->lp_ctx),
+ ldb_get_default_basedn(gp_ctx->ldb_ctx),
+ result->msgs[0],
+ dummy,
+ dummy,
+ &server_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to make server information: %s\n", get_friendly_nt_error_msg(status)));
+ talloc_free(gp_ctx);
+ return 1;
+ }
+
+ status = auth_generate_session_info(gp_ctx, gp_ctx->ev_ctx, gp_ctx->lp_ctx, server_info, &session_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to generate session information: %s\n", get_friendly_nt_error_msg(status)));
+ talloc_free(gp_ctx);
+ return 1;
+ }
+
+ status = gp_list_gpos(gp_ctx, session_info->security_token, &gpos);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to list gpos for user %s: %s\n", argv[0],
+ get_friendly_nt_error_msg(status)));
+ talloc_free(gp_ctx);
+ return 1;
+ }
+
+ d_printf("GPO's for user %s:\n", argv[0]);
+ for (i = 0; gpos[i] != NULL; i++) {
+ d_printf("\t%s\n", gpos[i]);
+ }
+
+ talloc_free(gp_ctx);
+ return 0;
+}
+
static const struct net_functable net_gpo_functable[] = {
{ "listall", "List all GPO's on a DC\n", net_gpo_list_all, net_gpo_list_all_usage },
{ "getgpo", "List specificied GPO\n", net_gpo_get_gpo, net_gpo_get_gpo_usage },
@@ -189,7 +279,7 @@ static const struct net_functable net_gpo_functable[] = {
/* { "apply", "Apply GPO to container\n", net_gpo_apply, net_gpo_usage }, */
// { "linkadd", "Link a GPO to a container\n", net_gpo_link_add, net_gpo_usage },
/* { "linkdelete", "Delete GPO link from a container\n", net_gpo_link_delete, net_gpo_usage }, */
-// { "list", "List all GPO's for machine/user\n", net_gpo_list, net_gpo_list_usage },
+ { "list", "List all GPO's for a machine/user\n", net_gpo_list, net_gpo_list_usage },
// { "refresh", "List all GPO's for machine/user and download them\n", net_gpo_refresh, net_gpo_refresh_usage },
{ NULL, NULL }
};
generated by cgit (git 2.34.1) at 2024-11-24 05:03:07 +0000