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authorAravinda VK <avishwan@redhat.com>2016-06-22 14:57:44 +0530
committerJeff Darcy <jdarcy@redhat.com>2016-06-27 10:11:43 -0700
commit888de8851e718d8e3117e47fa35cfc075b998f62 (patch)
tree22866fd0dab4f4681faccd9677b5631582eed7c5
parent04d95b93f1b0011920a15994059c3b17cf04e434 (diff)
glusterd/geo-rep: Add relative path validation to copy file command
Added validation for input file, command fails if input file path is relative path pointing outside of GLUSTERD_WORKDIR. BUG: 1348897 Change-Id: I329d43ebed69bfe9fe03d6be70dc8c78a605ffc5 Signed-off-by: Aravinda VK <avishwan@redhat.com> Reviewed-on: http://review.gluster.org/14772 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-geo-rep.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
index 13407c22df9..57b50934489 100644
--- a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
+++ b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
@@ -2395,6 +2395,9 @@ glusterd_op_stage_copy_file (dict_t *dict, char **op_errstr)
glusterd_conf_t *priv = NULL;
struct stat stbuf = {0,};
xlator_t *this = NULL;
+ char workdir[PATH_MAX] = {0,};
+ char realpath_filename[PATH_MAX] = {0,};
+ char realpath_workdir[PATH_MAX] = {0,};
this = THIS;
GF_ASSERT (this);
@@ -2439,6 +2442,37 @@ glusterd_op_stage_copy_file (dict_t *dict, char **op_errstr)
snprintf (abs_filename, sizeof(abs_filename),
"%s/%s", priv->workdir, filename);
+ if (!realpath (priv->workdir, realpath_workdir)) {
+ snprintf (errmsg, sizeof (errmsg), "Failed to get "
+ "realpath of %s: %s", priv->workdir,
+ strerror (errno));
+ *op_errstr = gf_strdup (errmsg);
+ ret = -1;
+ goto out;
+ }
+
+ if (!realpath (abs_filename, realpath_filename)) {
+ snprintf (errmsg, sizeof (errmsg), "Failed to get "
+ "realpath of %s: %s", filename,
+ strerror (errno));
+ *op_errstr = gf_strdup (errmsg);
+ ret = -1;
+ goto out;
+ }
+
+ /* Add Trailing slash to workdir, without slash strncmp
+ will succeed for /var/lib/glusterd_bad */
+ snprintf (workdir, sizeof(workdir), "%s/", realpath_workdir);
+
+ /* Protect against file copy outside $workdir */
+ if (strncmp (workdir, realpath_filename, strlen (workdir))) {
+ snprintf (errmsg, sizeof (errmsg), "Source file"
+ " is outside of %s directory", priv->workdir);
+ *op_errstr = gf_strdup (errmsg);
+ ret = -1;
+ goto out;
+ }
+
ret = sys_lstat (abs_filename, &stbuf);
if (ret) {
snprintf (errmsg, sizeof (errmsg), "Source file"