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strings: capsicumize it

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Reviewed by:	cem
Discussed with: emaste
Differential Revision:	https://reviews.freebsd.org/D18038
This commit is contained in:
oshogbo 2019-04-04 16:32:27 +00:00
parent 1b2f05a216
commit 344ba336a8
2 changed files with 31 additions and 4 deletions
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29
contrib/elftoolchain/strings/strings.c
View File

@ -25,8 +25,10 @@
*/
#include <sys/types.h>
#include <sys/capsicum.h>
#include <sys/stat.h>
#include <capsicum_helpers.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
@ -44,6 +46,9 @@
#include <libelftc.h>
#include <gelf.h>
#include <libcasper.h>
#include <casper/cap_fileargs.h>
#include "_elftc.h"
ELFTC_VCSID("$Id: strings.c 3648 2018-11-22 23:26:43Z emaste $");
@ -85,7 +90,7 @@ static struct option strings_longopts[] = {
};
int getcharacter(FILE *, long *);
int handle_file(const char *);
int handle_file(fileargs_t *fa, const char *);
int handle_elf(const char *, FILE *);
int handle_binary(const char *, FILE *, size_t);
int find_strings(const char *, FILE *, off_t, off_t);
@ -99,6 +104,8 @@ void usage(void);
int
main(int argc, char **argv)
{
fileargs_t *fa;
cap_rights_t rights;
int ch, rc;
rc = 0;
@ -187,27 +194,41 @@ main(int argc, char **argv)
argc -= optind;
argv += optind;
cap_rights_init(&rights, CAP_READ, CAP_SEEK, CAP_FSTAT, CAP_FCNTL);
fa = fileargs_init(argc, argv, O_RDONLY, 0, &rights);
if (fa == NULL)
err(1, "Unable to initialize casper fileargs");
caph_cache_catpages();
if (caph_limit_stdio() < 0 && caph_enter_casper() < 0) {
fileargs_free(fa);
err(1, "Unable to enter capability mode");
}
if (min_len == 0)
min_len = 4;
if (*argv == NULL)
rc = find_strings("{standard input}", stdin, 0, 0);
else while (*argv != NULL) {
if (handle_file(*argv) != 0)
if (handle_file(fa, *argv) != 0)
rc = 1;
argv++;
}
fileargs_free(fa);
return (rc);
}
int
handle_file(const char *name)
handle_file(fileargs_t *fa, const char *name)
{
FILE *pfile;
int rt;
if (name == NULL)
return (1);
pfile = fopen(name, "rb");
pfile = fileargs_fopen(fa, name, "rb");
if (pfile == NULL) {
warnx("'%s': %s", name, strerror(errno));
return (1);

6
usr.bin/strings/Makefile
View File

@ -10,6 +10,12 @@ PROG= strings
LIBADD= elftc elf
.if ${MK_CASPER} != "no" && !defined(BOOTSTRAPPING)
LIBADD+= casper
LIBADD+= cap_fileargs
CFLAGS+= -DWITH_CASPER
.endif
CFLAGS+=-I${ELFTCDIR}/libelftc -I${ELFTCDIR}/common
.include <bsd.prog.mk>