From 07da577db278027eec43993be14aeec427101e28 Mon Sep 17 00:00:00 2001
From: Daniel J Walsh <dwalsh@fedoraproject.org>
Date: Tue, 29 Mar 2005 15:33:55 +0000
Subject: [PATCH] - Better handling of booleans

---
 libselinux-rhat.patch | 487 ++++++++++++++++++++++++++++++++++++++++--
 libselinux.spec       |   7 +-
 2 files changed, 479 insertions(+), 15 deletions(-)

diff --git a/libselinux-rhat.patch b/libselinux-rhat.patch
index 5802d28..ddf8cb5 100644
--- a/libselinux-rhat.patch
+++ b/libselinux-rhat.patch
@@ -1,15 +1,474 @@
-diff --exclude-from=exclude -N -u -r nsalibselinux/src/matchpathcon.c libselinux-1.21.11/src/matchpathcon.c
---- nsalibselinux/src/matchpathcon.c	2005-02-22 16:34:17.000000000 -0500
-+++ libselinux-1.21.11/src/matchpathcon.c	2005-02-28 13:27:33.000000000 -0500
-@@ -679,6 +679,11 @@
- 		 mode_t mode,
- 		 security_context_t *con)
- {
-+	/* If the user provides a mode but does not provide a file type
-+	   default to regular file */
-+	if (mode && ((mode & S_IFMT)==0)) {
-+		mode = mode | S_IFREG;
-+	}
- 	int i = matchpathcon_common(name, mode);
+diff --exclude-from=exclude -N -u -r nsalibselinux/include/selinux/selinux.h libselinux-1.23.2/include/selinux/selinux.h
+--- nsalibselinux/include/selinux/selinux.h	2005-03-17 10:34:51.000000000 -0500
++++ libselinux-1.23.2/include/selinux/selinux.h	2005-03-28 15:02:16.000000000 -0500
+@@ -136,6 +136,16 @@
+ /* Load a policy configuration. */
+ extern int security_load_policy(void *data, size_t len);
  
- 	if (i < 0)
++/* Translate boolean strict to name value pair. */
++typedef struct {
++	char *name;
++	int value; 
++} SELboolean;
++	/* save a list of booleans in a single transaction.  */
++extern int security_set_boolean_list(size_t boolcnt, 
++				     SELboolean *boollist, 
++				     int permanent);
++
+ /* Load policy boolean settings.
+    Path may be NULL, in which case the booleans are loaded from
+    the active policy boolean configuration file. */
+diff --exclude-from=exclude -N -u -r nsalibselinux/src/booleans.c libselinux-1.23.2/src/booleans.c
+--- nsalibselinux/src/booleans.c	2004-11-09 09:13:54.000000000 -0500
++++ libselinux-1.23.2/src/booleans.c	2005-03-29 10:29:50.000000000 -0500
+@@ -238,51 +238,198 @@
+ 	dest[i+1]='\0';
+ 	return dest;
+ }
++static int process_boolean(char *buffer, char *name, int namesize, int *val) {
++	char name1[BUFSIZ];
++	char *ptr;
++	char *tok=strtok_r(buffer,"=",&ptr);
++	if (tok) {
++		strncpy(name1,tok, BUFSIZ-1);
++		strtrim(name,name1,namesize-1);
++		if ( name[0]=='#' ) return 0;
++		tok=strtok_r(NULL,"\0",&ptr);
++		if (tok) {
++			while (isspace(*tok)) tok++;
++			*val = -1;
++			if (isdigit(tok[0]))
++				*val=atoi(tok);
++			else if (!strncasecmp(tok, "true", sizeof("true")-1))
++				*val = 1;
++			else if (!strncasecmp(tok, "false", sizeof("false")-1))
++				*val = 0;
++			if (*val != 0 && *val != 1) {
++				errno=EINVAL;
++				return -1;
++			}
++			
++		}
++	}
++	return 1;
++}
++static int save_booleans(size_t boolcnt, SELboolean *boollist) {
++	ssize_t len;
++	size_t i;
++	char outbuf[BUFSIZ];
++	char *inbuf=NULL;
++	
++	/* Open file */
++	const char *bool_file = selinux_booleans_path();
++	char local_bool_file[PATH_MAX];
++	char tmp_bool_file[PATH_MAX]; 
++	FILE *boolf;
++	int fd;
++	int *used= (int *) malloc (sizeof(int) * boolcnt);
++	if (! used) {
++		return -1;
++	}
++	/* zero out used field */
++	for (i=0; i < boolcnt; i++)
++		used[i]=0;
++
++
++	snprintf(tmp_bool_file,sizeof(tmp_bool_file),"%s.XXXXXX", bool_file);
++	fd = mkstemp(tmp_bool_file);
++	if (fd < 0) { 
++		free(used);
++		return -1;
++	}
++
++	snprintf(local_bool_file,sizeof(local_bool_file),"%s.local", bool_file);	boolf = fopen(local_bool_file,"r");
++	if (boolf != NULL) {
++		ssize_t ret;
++		size_t size=0;
++		int val;
++		char boolname[BUFSIZ];
++		char *buffer;
++		char *inbuf=NULL;
++		while ((len=getline(&inbuf, &size, boolf)) > 0) {
++			buffer=strdup(inbuf);
++			if (!buffer) goto close_remove_fail;
++			ret=process_boolean(inbuf, boolname, sizeof(boolname), &val);
++			if (ret!=1) { 
++				ret=write(fd, buffer, len);
++				free(buffer);
++				if (ret != len) 
++					goto close_remove_fail;
++			} else {
++				free(buffer);
++				for (i=0; i < boolcnt; i++) {
++					if (strcmp(boollist[i].name, boolname)==0) {
++						snprintf(outbuf,sizeof(outbuf), "%s=%d\n", boolname, boollist[i].value); 
++						len=strlen(outbuf);
++						used[i]=1;
++						if (write(fd, outbuf, len) != len) 
++							goto close_remove_fail;
++						else 
++							break;
++					}
++				}
++				if ( i == boolcnt ) {
++					snprintf(outbuf,sizeof(outbuf), "%s=%d\n", boolname, val); 
++					len=strlen(outbuf);
++					if (write(fd, outbuf, len) != len) 
++						goto close_remove_fail;
++				}
++			}
++			free(inbuf);
++			inbuf=NULL;
++		}
++		fclose(boolf);
++	}
++	
++	for (i=0; i < boolcnt; i++) {
++		if (used[i]==0) {
++			snprintf(outbuf,sizeof(outbuf), "%s=%d\n", boollist[i].name, boollist[i].value); 
++			len=strlen(outbuf);
++			if (write(fd, outbuf, len) != len) {
++			close_remove_fail:
++				free(inbuf);
++				close(fd);
++			remove_fail:
++				unlink(tmp_bool_file);
++				free(used);
++				return -1;
++			}
++		}
++		
++	}
++	if (fchmod(fd, S_IRUSR | S_IWUSR) != 0)
++		goto close_remove_fail;
++	close(fd);
++	if (rename(tmp_bool_file, local_bool_file) != 0)
++		goto remove_fail;
++
++	free(used);
++	return 0;
++}
++static void rollback(SELboolean *boollist, int end)
++{
++	int i;
++
++        for(i=0; i<end; i++)
++                security_set_boolean(boollist[i].name,
++                        security_get_boolean_active(boollist[i].name));
++}
++
++
++int security_set_boolean_list(size_t boolcnt, SELboolean *boollist, int permanent) {
++
++	size_t i;
++	for (i=0; i < boolcnt; i++) {
++		if(security_set_boolean(boollist[i].name, boollist[i].value)) {
++			rollback(boollist, i);
++			return -1;
++		}
++	}
+ 
++	/* OK, let's do the commit */
++	if (security_commit_booleans()) {
++		return -1;
++	}
++
++	if (permanent) 
++		return save_booleans(boolcnt, boollist);
++
++	return 0;
++}
+ int security_load_booleans(char *path) {
+ 	FILE *boolf;
+-	char buffer[BUFSIZ];
+-	char name[BUFSIZ];
+-	char name1[BUFSIZ];
++	char *inbuf;
++	char localbools[BUFSIZ];
++	size_t len=0, errors=0;
+ 	int val;
+-	int errors=0;
++	char name[BUFSIZ];
+ 
+ 	boolf = fopen(path ? path : selinux_booleans_path(),"r");
+ 	if (boolf == NULL) 
+ 		return -1;
+ 
+-        while (fgets_unlocked(buffer, sizeof(buffer), boolf)) {
+-		char *ptr;
+-		char *tok=strtok_r(buffer,"=",&ptr);
+-		if (tok) {
+-			strncpy(name1,tok, BUFSIZ-1);
+-			strtrim(name,name1,BUFSIZ-1);
+-			if ( name[0]=='#' ) continue;
+-			tok=strtok_r(NULL,"\0",&ptr);
+-			if (tok) {
+-				while (isspace(*tok)) tok++;
+-				val = -1;
+-				if (isdigit(tok[0]))
+-					val=atoi(tok);
+-				else if (!strncmp(tok, "true", sizeof("true")-1))
+-					val = 1;
+-				else if (!strncmp(tok, "false", sizeof("false")-1))
+-					val = 0;
+-				if (val != 0 && val != 1) {
+-					fprintf(stderr,"illegal value for boolean %s=%s\n", name, tok);
+-					errors++;
+-					continue;
+-				}
++	while (getline(&inbuf, &len, boolf) > 0) {
++		int ret=process_boolean(inbuf, name, sizeof(name), &val);
++		if (ret==-1) 
++			errors++;
++		if (ret==1) 
++			if (security_set_boolean(name, val) < 0) {
++				errors++;
++			}
++	}
++	fclose(boolf);
++
++	snprintf(localbools,sizeof(localbools), "%s.local", (path ? path : selinux_booleans_path()));
++	boolf = fopen(localbools,"r");
+ 
++	if (boolf != NULL) {
++		int ret;
++		while (getline(&inbuf, &len, boolf) > 0) {
++			ret=process_boolean(inbuf, name, sizeof(name), &val);
++			if (ret==-1) 
++				errors++;
++			if (ret==1) 
+ 				if (security_set_boolean(name, val) < 0) {
+-					fprintf(stderr,"error setting boolean %s to value %d \n", name, val);
+ 					errors++;
+ 				}
+-			}
+ 		}
++		fclose(boolf);
+ 	}
+-	fclose(boolf);
+-
+ 	if (security_commit_booleans() < 0)
+ 		return -1;
+ 
+diff --exclude-from=exclude -N -u -r nsalibselinux/src/matchmediacon.c libselinux-1.23.2/src/matchmediacon.c
+--- nsalibselinux/src/matchmediacon.c	2004-10-20 16:31:36.000000000 -0400
++++ libselinux-1.23.2/src/matchmediacon.c	2005-03-28 16:44:29.000000000 -0500
+@@ -16,7 +16,7 @@
+ {
+ 	const char *path = selinux_media_context_path();
+ 	FILE *infile;
+-	char *ptr, *ptr2;
++	char *ptr, *ptr2=NULL;
+ 	int found=-1;
+ 	char current_line[PATH_MAX];
+ 	if ((infile = fopen(path, "r")) == NULL)
+diff --exclude-from=exclude -N -u -r nsalibselinux/src/matchpathcon.c libselinux-1.23.2/src/matchpathcon.c
+--- nsalibselinux/src/matchpathcon.c	2005-03-17 10:34:51.000000000 -0500
++++ libselinux-1.23.2/src/matchpathcon.c	2005-03-28 16:45:06.000000000 -0500
+@@ -531,7 +531,7 @@
+ 	char *line_buf = NULL;
+ 	size_t line_len = 0;
+ 	unsigned int lineno, pass, i, j, maxnspec;
+-	spec_t *spec_copy;
++	spec_t *spec_copy=NULL;
+ 	int status=-1;
+ 
+ 	/* Open the specification file. */
+diff --exclude-from=exclude -N -u -r nsalibselinux/utils/setenforce.c libselinux-1.23.2/utils/setenforce.c
+--- nsalibselinux/utils/setenforce.c	2005-01-20 16:05:25.000000000 -0500
++++ libselinux-1.23.2/utils/setenforce.c	2005-03-28 14:47:58.000000000 -0500
+@@ -13,7 +13,7 @@
+ 
+ int main(int argc, char **argv) 
+ {
+-	int rc;
++	int rc=0;
+ 	if (argc != 2) {
+ 		usage(argv[0]);
+ 	}
+diff --exclude-from=exclude -N -u -r nsalibselinux/utils/setsebool.c libselinux-1.23.2/utils/setsebool.c
+--- nsalibselinux/utils/setsebool.c	2005-02-22 16:34:17.000000000 -0500
++++ libselinux-1.23.2/utils/setsebool.c	2005-03-28 16:45:42.000000000 -0500
+@@ -8,11 +8,11 @@
+ #include <syslog.h>
+ #include <pwd.h>
+ #include <selinux/selinux.h>
++#include <errno.h>
+ 
+ int permanent = 0;
+ 
+-int setbool(char **list, int start, int end);
+-void rollback(char *list[], int start, int end);
++int setbool(char **list, size_t start, size_t end);
+ 
+ 
+ void usage(void)
+@@ -23,7 +23,7 @@
+ 
+ int main(int argc, char **argv)
+ {
+-	int rc, start;
++	size_t rc, start;
+ 
+ 	if (argc < 2) 
+ 		usage();
+@@ -72,12 +72,20 @@
+ 
+ /* Given an array of strings in the form "boolname=value", a start index,
+    and a finish index...walk the list and set the bool. */
+-int setbool(char **list, int start, int end)
++int setbool(char **list, size_t start, size_t end)
+ {
+ 	char *name, *value_ptr;
+ 	int i=start, value;
++	int ret=0;
++	int j=0;
++	size_t boolcnt=end-start;
+ 	struct passwd *pwd;
+-
++	SELboolean *vallist=calloc(boolcnt, sizeof(SELboolean));
++	if (!vallist) {
++		fprintf(stderr, 
++			"Error setting booleans: %s\n", strerror(errno));
++		return 1;
++	}
+ 	while (i < end) {
+ 		name = list[i];
+ 		value_ptr = strchr(list[i], '=');
+@@ -85,8 +93,8 @@
+ 			fprintf(stderr, 
+ 			"setsebool: '=' not found in boolean expression %s\n",
+ 				list[i]);
+-			rollback(list, start, i);
+-			return 4;
++			ret=4;
++			goto error_label;
+ 		}
+ 		*value_ptr = 0;
+ 		value_ptr++;
+@@ -99,92 +107,43 @@
+ 		else {
+ 			fprintf(stderr, "setsebool: illegal boolean value %s\n",
+ 				value_ptr);
+-			rollback(list, start, i);
+-			return 1;
++			ret=1;
++			goto error_label;
+ 		}
+ 
+-		if(security_set_boolean(name, value)) {
++		vallist[j].value = value;
++		vallist[j].name = strdup(name);
++		if (!vallist[j].name) {
+ 			fprintf(stderr, 
+ 				"Error setting boolean %s to value %d (%s)\n", 
+ 				name, value, strerror(errno));
+-			rollback(list, start, i);
+-			return 2;
++			ret= 2;
++			goto error_label;
+ 		}
+ 		i++;
++		j++;
+ 
+ 		/* Now put it back */
+ 		value_ptr--;
+ 		*value_ptr = '=';
+ 	}
+ 
+-	/* At this point we know that everything is good. Let's write
+-	   the file if the -P option was given. */
+-	if (permanent) {
+-		char **names;
+-		const char *bool_file;
+-		char *tmp_bool_file;
+-		int rc, len, fd, j;
+-
+-		rc = security_get_boolean_names(&names, &len);
+-		if (rc) {
+-			fprintf(stderr,
+-				"Unable to get boolean names:  %s\n",
+-				strerror(errno));
+-			rollback(list, start, i);
+-			return 5;
+-		}
++	ret=security_set_boolean_list(boolcnt, vallist, permanent);
+ 
+-		if (!len) {
+-			fprintf(stderr, 
+-			"Unable to get the boolean list from kernel - exiting\n"
+-				);
+-			rollback(list, start, i);
+-			return 6;
+-		}
++ error_label:
++	for (i=0; i < boolcnt; i++) 
++		if (vallist[i].name) free(vallist[i].name);
++	free(vallist);
+ 
+-		/* Open file */
+-		bool_file = selinux_booleans_path();
+-		tmp_bool_file = (char *) alloca (strlen(bool_file) + 8);
+-		strcpy(stpcpy(tmp_bool_file, bool_file), ".XXXXXX");
+-		fd = mkstemp(tmp_bool_file);
+-		if (fd < 0) {
++	if (ret) {
++		if (errno==ENOENT) {
+ 			fprintf(stderr, 
+-				"Error creating boolean file %s\n", 
+-				bool_file);
+-			rollback(list, start, i);
+-			return 7;
+-			
++				"Error setting boolean: Invalid boolean\n");
++		} else {
++			if (errno) 
++				perror("Error setting booleans");
+ 		}
+-
+-		/* Walk the list in pending memory, writing each to the file */
+-		for (j=0; j<len; j++) {
+-			char val_str[72];
+-			int len;
+-			int pending = security_get_boolean_pending(names[j]);
+-			len = snprintf(val_str, sizeof(val_str), "%s=%d\n", 
+-							names[j], pending);
+-			if (write(fd, val_str, len) != len) {
+-			close_remove_fail:
+-				close(fd);
+-			remove_fail:
+-				unlink(tmp_bool_file);
+-				rollback(list, start, i);
+-				return 8;
+-			}
+-		}
+-
+-		if (fchmod(fd, S_IRUSR | S_IWUSR) != 0)
+-			goto close_remove_fail;
+-		close(fd);
+-		if (rename(tmp_bool_file, bool_file) != 0)
+-			goto remove_fail;
+-		syslog(LOG_NOTICE, "%s has been updated.", bool_file);
+-	}
+-	
+-	/* OK, let's do the commit */
+-	if (security_commit_booleans()) {
+-		fputs("Error committing booleans\n", stderr);
+-		return 3;
++		return ret;
+ 	}
+ 
+ 	/* Now log what was done */
+@@ -211,12 +170,3 @@
+ 	return 0;
+ }
+ 
+-void rollback(char *list[], int start, int end)
+-{
+-	int i;
+-
+-        for(i=start; i<end; i++)
+-                security_set_boolean(list[i],
+-                        security_get_boolean_active(list[i]));
+-}
+-
diff --git a/libselinux.spec b/libselinux.spec
index 9a330fa..258eabf 100644
--- a/libselinux.spec
+++ b/libselinux.spec
@@ -1,10 +1,11 @@
 Summary: SELinux library and simple utilities
 Name: libselinux
 Version: 1.23.2
-Release: 1
+Release: 2
 License: Public domain (uncopyrighted)
 Group: System Environment/Libraries
 Source: http://www.nsa.gov/selinux/archives/%{name}-%{version}.tgz
+patch: libselinux-rhat.patch
 
 BuildRoot: %{_tmppath}/%{name}-%{version}-buildroot
 
@@ -34,6 +35,7 @@ needed for developing SELinux applications.
 
 %prep
 %setup -q
+%patch -p1 -b .rhat
 
 %build
 make CFLAGS="-g %{optflags}"
@@ -84,6 +86,9 @@ rm -rf ${RPM_BUILD_ROOT}
 %{_mandir}/man8/*
 
 %changelog
+* Wed Mar 23 2005 Dan Walsh <dwalsh@redhat.com> 1.23.2-2
+- Better handling of booleans
+
 * Thu Mar 17 2005 Dan Walsh <dwalsh@redhat.com> 1.23.2-1
 - Update from NSA
 	* Merged destructors patch from Tomas Mraz.