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[2/2] policycoreutils: Add cil2conf which creates a policy.conf from CIL policy

Message ID 1479492328-12238-3-git-send-email-jwcart2@tycho.nsa.gov (mailing list archive)
State Not Applicable
Headers show

Commit Message

James Carter Nov. 18, 2016, 6:05 p.m. UTC
The program cil2conf uses the libsepol function cil_write_policy_conf()
to create a policy.conf file from CIL policy.

By default a file called "policy.conf" will be created, but the "-o"
option can be used to write to a different file. The "-M" option can
be used to override the mls statement in CIL. The "-P" option will
cause tunables to be treated as booleans.

Signed-off-by: James Carter <jwcart2@tycho.nsa.gov>
---
 policycoreutils/Makefile            |   2 +-
 policycoreutils/cil2conf/Makefile   |  33 +++++++
 policycoreutils/cil2conf/cil2conf.c | 192 ++++++++++++++++++++++++++++++++++++
 3 files changed, 226 insertions(+), 1 deletion(-)
 create mode 100644 policycoreutils/cil2conf/Makefile
 create mode 100644 policycoreutils/cil2conf/cil2conf.c

Comments

James Carter Nov. 18, 2016, 6:19 p.m. UTC | #1
On 11/18/2016 01:17 PM, Nick Kralevich wrote:
> Is the copyright statement below accurate? This doesn't look to be
> created in 2011, and I'm not sure it was created by Tresys...
>

It was derived from the secilc code, so I left the copyright notice.

Jim

> -- Nick
>
> On Fri, Nov 18, 2016 at 10:05 AM, James Carter <jwcart2@tycho.nsa.gov> wrote:
>> +/*
>> + * Copyright 2011 Tresys Technology, LLC. All rights reserved.
>> + *
>> + * Redistribution and use in source and binary forms, with or without
>> + * modification, are permitted provided that the following conditions are met:
>> + *
>> + *    1. Redistributions of source code must retain the above copyright notice,
>> + *       this list of conditions and the following disclaimer.
>> + *
>> + *    2. Redistributions in binary form must reproduce the above copyright notice,
>> + *       this list of conditions and the following disclaimer in the documentation
>> + *       and/or other materials provided with the distribution.
>> + *
>> + * THIS SOFTWARE IS PROVIDED BY TRESYS TECHNOLOGY, LLC ``AS IS'' AND ANY EXPRESS
>> + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
>> + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
>> + * EVENT SHALL TRESYS TECHNOLOGY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
>> + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
>> + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>> + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
>> + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
>> + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
>> + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>> + *
>> + * The views and conclusions contained in the software and documentation are those
>> + * of the authors and should not be interpreted as representing official policies,
>> + * either expressed or implied, of Tresys Technology, LLC.
>> + */
diff mbox

Patch

diff --git a/policycoreutils/Makefile b/policycoreutils/Makefile
index b930b29..b246e35 100644
--- a/policycoreutils/Makefile
+++ b/policycoreutils/Makefile
@@ -1,4 +1,4 @@ 
-SUBDIRS = setfiles load_policy newrole run_init secon sestatus semodule setsebool scripts po man hll
+SUBDIRS = setfiles load_policy newrole run_init secon sestatus semodule setsebool scripts po man hll cil2conf
 
 all install relabel clean indent:
 	@for subdir in $(SUBDIRS); do \
diff --git a/policycoreutils/cil2conf/Makefile b/policycoreutils/cil2conf/Makefile
new file mode 100644
index 0000000..4098679
--- /dev/null
+++ b/policycoreutils/cil2conf/Makefile
@@ -0,0 +1,33 @@ 
+PREFIX ?= $(DESTDIR)/usr
+BINDIR ?= $(PREFIX)/bin
+MANDIR = $(PREFIX)/share/man
+LIBDIR ?= $(PREFIX)/lib
+INCLUDEDIR ?= $(PREFIX)/include
+
+LDLIBS = -lsepol -L$(LIBDIR)
+CIL2CONF_SRCS = $(wildcard *.c)
+CIL2CONF_OBJS = $(patsubst %.c,%.o,$(CIL2CONF_SRCS))
+
+CFLAGS ?= -Wall -Wshadow -Wextra -Wundef -Wmissing-format-attribute -Wcast-align -Wstrict-prototypes -Wpointer-arith -Wunused
+
+override CFLAGS += -I$(INCLUDEDIR)
+
+all: cil2conf
+
+cil2conf: $(CIL2CONF_OBJS)
+	$(CC) $(LDFLAGS) -o $@ $^ $(LDLIBS)
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c -o $@ $^
+
+install: all
+	-mkdir -p $(BINDDIR)
+	install -m 755 cil2conf $(BINDIR)
+
+relabel:
+
+clean:
+	-rm -f pp $(CIL2CONF_OBJS)
+
+indent:
+	../../scripts/Lindent $(wildcard *.[ch])
diff --git a/policycoreutils/cil2conf/cil2conf.c b/policycoreutils/cil2conf/cil2conf.c
new file mode 100644
index 0000000..ff564f0
--- /dev/null
+++ b/policycoreutils/cil2conf/cil2conf.c
@@ -0,0 +1,192 @@ 
+/*
+ * Copyright 2011 Tresys Technology, LLC. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice,
+ *       this list of conditions and the following disclaimer in the documentation
+ *       and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY TRESYS TECHNOLOGY, LLC ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL TRESYS TECHNOLOGY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those
+ * of the authors and should not be interpreted as representing official policies,
+ * either expressed or implied, of Tresys Technology, LLC.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include <sys/stat.h>
+
+#ifdef ANDROID
+#include <cil/cil.h>
+#else
+#include <sepol/cil/cil.h>
+#endif
+#include <sepol/policydb.h>
+
+void usage(char *prog)
+{
+	printf("Usage: %s [OPTION]... FILE...\n", prog);
+	printf("\n");
+	printf("Options:\n");
+	printf("  -o, --output=<file>            write policy.conf to <file>\n");
+	printf("                                 (default: policy.conf)\n");
+	printf("  -M, --mls true|false           write an mls policy. Must be true or false.\n");
+	printf("                                 This will override the (mls boolean) statement\n");
+	printf("                                 if present in the policy\n");
+	printf("  -P, --preserve-tunables        treat tunables as booleans\n");
+	printf("  -v, --verbose                  increment verbosity level\n");
+	printf("  -h, --help                     display usage information\n");
+	exit(1);
+}
+
+int main(int argc, char *argv[])
+{
+	int rc = SEPOL_ERR;
+	FILE *file = NULL;
+	char *buffer = NULL;
+	struct stat filedata;
+	uint32_t file_size;
+	char *output = NULL;
+	struct cil_db *db = NULL;
+	int mls = -1;
+	int preserve_tunables = 0;
+	int opt_char;
+	int opt_index = 0;
+	enum cil_log_level log_level = CIL_ERR;
+	static struct option long_opts[] = {
+		{"help", no_argument, 0, 'h'},
+		{"verbose", no_argument, 0, 'v'},
+		{"mls", required_argument, 0, 'M'},
+		{"preserve-tunables", no_argument, 0, 'P'},
+		{"output", required_argument, 0, 'o'},
+		{0, 0, 0, 0}
+	};
+	int i;
+
+	while (1) {
+		opt_char = getopt_long(argc, argv, "o:hvM:P", long_opts, &opt_index);
+		if (opt_char == -1) {
+			break;
+		}
+		switch (opt_char) {
+			case 'v':
+				log_level++;
+				break;
+			case 'M':
+				if (!strcasecmp(optarg, "true") || !strcasecmp(optarg, "1")) {
+					mls = 1;
+				} else if (!strcasecmp(optarg, "false") || !strcasecmp(optarg, "0")) {
+					mls = 0;
+				} else {
+					usage(argv[0]);
+				}
+				break;
+			case 'P':
+				preserve_tunables = 1;
+				break;
+			case 'o':
+				output = strdup(optarg);
+				break;
+			case 'h':
+				usage(argv[0]);
+			case '?':
+				break;
+			default:
+					fprintf(stderr, "Unsupported option: %s\n", optarg);
+				usage(argv[0]);
+		}
+	}
+	if (optind >= argc) {
+		fprintf(stderr, "No cil files specified\n");
+		usage(argv[0]);
+	}
+
+	cil_set_log_level(log_level);
+
+	cil_db_init(&db);
+	cil_set_preserve_tunables(db, preserve_tunables);
+	cil_set_mls(db, mls);
+
+	for (i = optind; i < argc; i++) {
+		file = fopen(argv[i], "r");
+		if (!file) {
+			fprintf(stderr, "Could not open file: %s\n", argv[i]);
+			rc = SEPOL_ERR;
+			goto exit;
+		}
+		rc = stat(argv[i], &filedata);
+		if (rc == -1) {
+			fprintf(stderr, "Could not stat file: %s\n", argv[i]);
+			goto exit;
+		}
+		file_size = filedata.st_size;
+
+		buffer = malloc(file_size);
+		rc = fread(buffer, file_size, 1, file);
+		if (rc != 1) {
+			fprintf(stderr, "Failure reading file: %s\n", argv[i]);
+			goto exit;
+		}
+		fclose(file);
+		file = NULL;
+
+		rc = cil_add_file(db, argv[i], buffer, file_size);
+		if (rc != SEPOL_OK) {
+			fprintf(stderr, "Failure adding %s\n", argv[i]);
+			goto exit;
+		}
+
+		free(buffer);
+		buffer = NULL;
+	}
+
+	rc = cil_compile(db);
+	if (rc != SEPOL_OK) {
+		fprintf(stderr, "Failed to compile cildb: %d\n", rc);
+		goto exit;
+	}
+
+	if (output == NULL) {
+		file = fopen("policy.conf", "w");
+	} else {
+		file = fopen(output, "w");
+	}
+	if (file == NULL) {
+		fprintf(stderr, "Failure opening policy.conf file for writing\n");
+		rc = SEPOL_ERR;
+		goto exit;
+	}
+
+	cil_write_policy_conf(file, db);
+
+	fclose(file);
+	file = NULL;
+	rc = SEPOL_OK;
+
+exit:
+	if (file != NULL) {
+		fclose(file);
+	}
+	free(buffer);
+	free(output);
+	cil_db_destroy(&db);
+	return rc;
+}