/* libguestfs - the guestfsd daemon
- * Copyright (C) 2009 Red Hat Inc.
+ * Copyright (C) 2009 Red Hat Inc.
*
* 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
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
#include "daemon.h"
#include "actions.h"
char **
do_strings_e (const char *encoding, const char *path)
{
- int len;
- char *buf;
- int r;
+ int fd, flags, r;
char *out, *err;
- char **lines = NULL;
- int size = 0, alloc = 0;
- char *p, *pend;
+ char **lines;
- NEED_ROOT (NULL);
- ABS_PATH (path, NULL);
-
- len = strlen (path) + 9;
- buf = malloc (len);
- if (!buf) {
- reply_with_perror ("malloc");
+ if (strlen (encoding) != 1 ||
+ strchr ("sSblBL", encoding[0]) == NULL) {
+ reply_with_error ("%s: invalid encoding", encoding);
return NULL;
}
- snprintf (buf, len, "/sysroot%s", path);
+ CHROOT_IN;
+ fd = open (path, O_RDONLY);
+ CHROOT_OUT;
+
+ if (fd == -1) {
+ reply_with_perror ("%s", path);
+ return NULL;
+ }
- r = command (&out, &err, "strings", "-e", encoding, buf, NULL);
- free (buf);
+ flags = COMMAND_FLAG_CHROOT_COPY_FILE_TO_STDIN | fd;
+ r = commandf (&out, &err, flags, "strings", "-e", encoding, NULL);
if (r == -1) {
- reply_with_error ("strings: %s: %s", path, err);
+ reply_with_error ("%s: %s", path, err);
free (err);
free (out);
return NULL;
free (err);
/* Now convert the output to a list of lines. */
- p = out;
- while (p && *p) {
- pend = strchr (p, '\n');
- if (pend) {
- *pend = '\0';
- pend++;
- }
-
- if (add_string (&lines, &size, &alloc, p) == -1) {
- free (out);
- return NULL;
- }
-
- p = pend;
- }
-
+ lines = split_lines (out);
free (out);
- if (add_string (&lines, &size, &alloc, NULL) == -1)
+ if (lines == NULL)
return NULL;
return lines; /* Caller frees. */