1 files changed, 407 insertions, 0 deletions
diff --git a/sechecker/modules/find_assoc_types.c b/sechecker/modules/find_assoc_types.c
new file mode 100644
index 0000000..0e72801
--- /dev/null
+++ b/sechecker/modules/find_assoc_types.c
@@ -0,0 +1,407 @@
+/**
+ *  @file
+ *  Implementation of the association types utility module.
+ *
+ *  @author Kevin Carr kcarr@tresys.com
+ *  @author Jeremy A. Mowery jmowery@tresys.com
+ *  @author Jason Tang jtang@tresys.com
+ *  @author David Windsor dwindsor@tresys.com
+ *
+ *  Copyright (C) 2005-2007 Tresys Technology, LLC
+ *
+ *  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "find_assoc_types.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+static const char *const mod_name = "find_assoc_types";
+
+int find_assoc_types_register(sechk_lib_t * lib)
+{
+	sechk_module_t *mod = NULL;
+	sechk_fn_t *fn_struct = NULL;
+
+	if (!lib) {
+		ERR(NULL, "%s", "No library");
+		errno = EINVAL;
+		return -1;
+	}
+
+	/* Modules are declared by the config file and their name and options
+	 * are stored in the module array.  The name is looked up to determine
+	 * where to store the function structures */
+	mod = sechk_lib_get_module(mod_name, lib);
+	if (!mod) {
+		ERR(NULL, "%s", "Module unknown");
+		errno = EINVAL;
+		return -1;
+	}
+	mod->parent_lib = lib;
+
+	/* assign the descriptions */
+	mod->brief_description = "utility module";
+	mod->detailed_description =
+		"--------------------------------------------------------------------------------\n"
+		"This module finds types with an unlabeled initial sid. \n";
+	mod->opt_description =
+		"  Module requirements:\n" "    none\n" "  Module dependencies:\n" "    none\n" "  Module options:\n" "    none\n";
+	mod->severity = SECHK_SEV_NONE;
+
+	/* register functions */
+	fn_struct = sechk_fn_new();
+	if (!fn_struct) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+	fn_struct->name = strdup(SECHK_MOD_FN_INIT);
+	if (!fn_struct->name) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+	fn_struct->fn = find_assoc_types_init;
+	if (apol_vector_append(mod->functions, (void *)fn_struct) < 0) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+
+	fn_struct = sechk_fn_new();
+	if (!fn_struct) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+	fn_struct->name = strdup(SECHK_MOD_FN_RUN);
+	if (!fn_struct->name) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+	fn_struct->fn = find_assoc_types_run;
+	if (apol_vector_append(mod->functions, (void *)fn_struct) < 0) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+
+	mod->data_free = NULL;
+
+	fn_struct = sechk_fn_new();
+	if (!fn_struct) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+	fn_struct->name = strdup(SECHK_MOD_FN_PRINT);
+	if (!fn_struct->name) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+	fn_struct->fn = find_assoc_types_print;
+	if (apol_vector_append(mod->functions, (void *)fn_struct) < 0) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+
+	fn_struct = sechk_fn_new();
+	if (!fn_struct) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+	fn_struct->name = strdup("get_list");
+	if (!fn_struct->name) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+	fn_struct->fn = find_assoc_types_get_list;
+	if (apol_vector_append(mod->functions, (void *)fn_struct) < 0) {
+		ERR(NULL, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+
+	return 0;
+}
+
+/* The init function creates the module's private data storage object
+ * and initializes its values based on the options parsed in the config
+ * file. */
+int find_assoc_types_init(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused)))
+{
+	if (!mod || !policy) {
+		ERR(policy, "%s", "Invalid parameters");
+		errno = EINVAL;
+		return -1;
+	}
+	if (strcmp(mod_name, mod->name)) {
+		ERR(policy, "Wrong module (%s)\n", mod->name);
+		errno = EINVAL;
+		return -1;
+	}
+
+	mod->data = NULL;
+
+	return 0;
+}
+
+/* The run function performs the check. This function runs only once
+ * even if called multiple times. All test logic should be placed below
+ * as instructed. This function allocates the result structure and fills
+ * in all relavant item and proof data.
+ * Return Values:
+ *  -1 System error
+ *   0 The module "succeeded"	- no negative results found
+ *   1 The module "failed"	- some negative results found */
+int find_assoc_types_run(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused)))
+{
+	sechk_result_t *res = NULL;
+	sechk_item_t *item = NULL;
+	sechk_proof_t *proof = NULL;
+	char *buff = NULL;
+	size_t buff_sz = 0;
+	const qpol_isid_t *isid;
+	const char *type_name = NULL;
+	const qpol_type_t *type;
+	const qpol_context_t *context;
+	qpol_policy_t *q = apol_policy_get_qpol(policy);
+	int error = 0;
+
+	if (!mod || !policy) {
+		ERR(policy, "%s", "Invalid parameters");
+		errno = EINVAL;
+		return -1;
+	}
+	if (strcmp(mod_name, mod->name)) {
+		ERR(policy, "Wrong module (%s)", mod->name);
+		errno = EINVAL;
+		return -1;
+	}
+
+	/* if already run return */
+	if (mod->result)
+		return 0;
+
+	res = sechk_result_new();
+	if (!res) {
+		ERR(policy, "%s", strerror(ENOMEM));
+		errno = ENOMEM;
+		return -1;
+	}
+	res->test_name = strdup(mod_name);
+	if (!res->test_name) {
+		ERR(policy, "%s", strerror(ENOMEM));
+		error = ENOMEM;
+		goto find_assoc_types_run_fail;
+	}
+	res->item_type = SECHK_ITEM_TYPE;
+
+	/* Initialize vectors */
+
+	qpol_policy_get_isid_by_name(q, "unlabeled", &isid);
+	if (!isid) {
+		error = errno;
+		goto find_assoc_types_run_fail;
+	}
+
+	if (apol_str_append(&buff, &buff_sz, "sid unlabeled ") != 0) {
+		error = errno;
+		ERR(policy, "%s", strerror(ENOMEM));
+		goto find_assoc_types_run_fail;
+	}
+
+	qpol_isid_get_context(q, isid, &context);
+	qpol_context_get_type(q, context, &type);
+	qpol_type_get_name(q, type, &type_name);
+
+	if (apol_str_append(&buff, &buff_sz, type_name) != 0) {
+		error = errno;
+		ERR(policy, "%s", strerror(ENOMEM));
+		goto find_assoc_types_run_fail;
+	}
+
+	if (!item) {
+		item = sechk_item_new(NULL);
+		if (!item) {
+			error = errno;
+			ERR(policy, "%s", strerror(ENOMEM));
+			goto find_assoc_types_run_fail;
+		}
+	}
+
+	proof = sechk_proof_new(NULL);
+	if (!proof) {
+		error = errno;
+		ERR(policy, "%s", strerror(ENOMEM));
+		goto find_assoc_types_run_fail;
+	}
+
+	item->test_result = 1;
+	item->item = (void *)type;
+	proof->type = SECHK_ITEM_TYPE;
+	proof->text = buff;
+	if (!(res->items = apol_vector_create(sechk_item_free))) {
+		error = errno;
+		ERR(policy, "%s", strerror(ENOMEM));
+		goto find_assoc_types_run_fail;
+	}
+	if (!(item->proof = apol_vector_create(sechk_proof_free))) {
+		error = errno;
+		ERR(policy, "%s", strerror(ENOMEM));
+		goto find_assoc_types_run_fail;
+	}
+	if (apol_vector_append(item->proof, (void *)proof) < 0) {
+		error = errno;
+		ERR(policy, "%s", strerror(ENOMEM));
+		goto find_assoc_types_run_fail;
+	}
+	if (apol_vector_append(res->items, (void *)item) < 0) {
+		error = errno;
+		ERR(policy, "%s", strerror(ENOMEM));
+		goto find_assoc_types_run_fail;
+	}
+
+	mod->result = res;
+
+	return 0;
+
+      find_assoc_types_run_fail:
+	sechk_proof_free(proof);
+	sechk_item_free(item);
+	free(buff);
+	sechk_result_destroy(&res);
+	errno = error;
+	return -1;
+}
+
+/* The print function generates the text and prints the
+ * results to stdout. */
+int find_assoc_types_print(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused)))
+{
+	unsigned char outformat = 0x00;
+	sechk_item_t *item = NULL;
+	sechk_proof_t *proof = NULL;
+	size_t i = 0, j = 0, k = 0, num_items;
+	const qpol_type_t *type;
+	qpol_policy_t *q = apol_policy_get_qpol(policy);
+	const char *type_name;
+
+	if (!mod || !policy) {
+		ERR(policy, "%s", "Invalid parameters");
+		errno = EINVAL;
+		return -1;
+	}
+	if (strcmp(mod_name, mod->name)) {
+		ERR(policy, "Error: wrong module (%s)\n", mod->name);
+		errno = EINVAL;
+		return -1;
+	}
+
+	outformat = mod->outputformat;
+	num_items = apol_vector_get_size(mod->result->items);
+
+	if (!mod->result) {
+		ERR(policy, "%s", "Module has not been run");
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (!outformat || (outformat & SECHK_OUT_QUIET))
+		return 0;	       /* not an error - no output is requested */
+
+	if (outformat & SECHK_OUT_STATS) {
+		printf("Found %zd assoc type(s).\n", num_items);
+	}
+	/* The list reassoc component is a display of all items
+	 * found without any supassocing proof. The default method
+	 * is to display a comma separated list four items to a line
+	 * this may need to be changed for longer items. */
+	if (outformat & SECHK_OUT_LIST) {
+		printf("\n");
+		for (j = 0; j < num_items; j++) {
+			i++;
+			i %= 4;
+			item = apol_vector_get_element(mod->result->items, j);
+			type = item->item;
+			qpol_type_get_name(q, type, &type_name);
+			if (item)
+				printf("%s%s", type_name, (char *)((j && i != num_items - 1) ? ", " : "\n"));
+		}
+		printf("\n");
+	}
+	/* The proof reassoc component is a display of a list of items
+	 * with an indented list of proof statements supassocing the result
+	 * of the check for that item (e.g. rules with a given type)
+	 * this field also lists the computed severity of each item
+	 * (see sechk_item_sev in sechecker.c for details on calculation)
+	 * items are printed on a line either with (or, if long, such as a
+	 * rule, followed by) the severity. Each proof element is then
+	 * displayed in an indented list one per line below it. */
+	if (outformat & SECHK_OUT_PROOF) {
+		printf("\n");
+		for (j = 0; j < apol_vector_get_size(mod->result->items); j++) {
+			item = apol_vector_get_element(mod->result->items, j);
+			if (item) {
+				type = item->item;
+				qpol_type_get_name(q, type, &type_name);
+				printf("%s\n", type_name);
+				for (k = 0; k < apol_vector_get_size(item->proof); k++) {
+					proof = apol_vector_get_element(item->proof, k);
+					if (proof)
+						printf("\t%s\n", proof->text);
+				}
+			}
+		}
+		printf("\n");
+	}
+	type = NULL;
+	type_name = NULL;
+
+	return 0;
+}
+
+int find_assoc_types_get_list(sechk_module_t * mod, apol_policy_t * policy, void *arg)
+{
+	apol_vector_t **v = arg;
+
+	if (!mod || !arg) {
+		ERR(policy, "%s", "Invalid parameters");
+		errno = EINVAL;
+		return -1;
+	}
+	if (strcmp(mod_name, mod->name)) {
+		ERR(policy, "Wrong module (%s)", mod->name);
+		errno = EINVAL;
+		return -1;
+	}
+	if (!mod->result) {
+		ERR(policy, "%s", "Module has not been run");
+		errno = EINVAL;
+		return -1;
+	}
+
+	v = &mod->result->items;
+
+	return 0;
+}