all: fix the format string exceptions

Currently, there are possibilities in few places, where a user-controlled
(like filename, program parameter etc) string can be passed as 'fmt' for
printf(), which can lead to segfault, if the user's string contains '%s',
'%d' in it.

While fixing it, makes sense to make the explicit check for such issues
across the codebase, by making the format call properly.

Fixes: CVE-2018-14661

Fixes: bz#1647666
Change-Id: Ib547293f2d9eb618594cbff0df3b9c800e88bde4
Signed-off-by: Amar Tumballi <amarts@redhat.com>

5 files changed, 11 insertions, 11 deletions

diff --git a/xlators/features/barrier/src/barrier.c b/xlators/features/barrier/src/barrier.c
index edecae1a55e..1c5c5ffdc22 100644
--- a/xlators/features/barrier/src/barrier.c
+++ b/xlators/features/barrier/src/barrier.c
@@ -721,7 +721,7 @@ __barrier_dump_queue(barrier_priv_t *priv)
     list_for_each_entry(stub, &priv->queue, list)
     {
         snprintf(key, sizeof(key), "stub.%d", i++);
-        gf_proc_dump_add_section(key);
+        gf_proc_dump_add_section("%s", key);
         barrier_dump_stub(stub, key);
     }
 
@@ -745,7 +745,7 @@ barrier_dump_priv(xlator_t *this)
         return 0;
 
     gf_proc_dump_build_key(key, "xlator.features.barrier", "priv");
-    gf_proc_dump_add_section(key);
+    gf_proc_dump_add_section("%s", key);
 
     LOCK(&priv->lock);
     {
diff --git a/xlators/features/gfid-access/src/gfid-access.c b/xlators/features/gfid-access/src/gfid-access.c
index 3d5008666f6..7280d9ce416 100644
--- a/xlators/features/gfid-access/src/gfid-access.c
+++ b/xlators/features/gfid-access/src/gfid-access.c
@@ -1365,7 +1365,7 @@ ga_dump_inodectx(xlator_t *this, inode_t *inode)
     if (ret == 0) {
         tmp_inode = (void *)value;
         gf_proc_dump_build_key(key_prefix, this->name, "inode");
-        gf_proc_dump_add_section(key_prefix);
+        gf_proc_dump_add_section("%s", key_prefix);
         gf_proc_dump_write("real-gfid", "%s", uuid_utoa(tmp_inode->gfid));
     }
 
diff --git a/xlators/features/locks/src/posix.c b/xlators/features/locks/src/posix.c
index 6b67f7ece94..917eacee8da 100644
--- a/xlators/features/locks/src/posix.c
+++ b/xlators/features/locks/src/posix.c
@@ -3248,7 +3248,7 @@ __dump_entrylks(pl_inode_t *pl_inode)
                          lock->connection_id, blocked, granted);
             }
 
-            gf_proc_dump_write(key, tmp);
+            gf_proc_dump_write(key, "%s", tmp);
 
             count++;
         }
@@ -3266,7 +3266,7 @@ __dump_entrylks(pl_inode_t *pl_inode)
                 lkowner_utoa(&lock->owner), lock->client, lock->connection_id,
                 blocked);
 
-            gf_proc_dump_write(key, tmp);
+            gf_proc_dump_write(key, "%s", tmp);
 
             count++;
         }
@@ -3310,7 +3310,7 @@ __dump_inodelks(pl_inode_t *pl_inode)
                          lock->client, lock->connection_id,
                          &lock->granted_time.tv_sec, &lock->blkd_time.tv_sec,
                          _gf_true);
-            gf_proc_dump_write(key, tmp);
+            gf_proc_dump_write(key, "%s", tmp);
 
             count++;
         }
@@ -3323,7 +3323,7 @@ __dump_inodelks(pl_inode_t *pl_inode)
             pl_dump_lock(tmp, sizeof(tmp), &lock->user_flock, &lock->owner,
                          lock->client, lock->connection_id, 0,
                          &lock->blkd_time.tv_sec, _gf_false);
-            gf_proc_dump_write(key, tmp);
+            gf_proc_dump_write(key, "%s", tmp);
 
             count++;
         }
@@ -3358,7 +3358,7 @@ __dump_posixlks(pl_inode_t *pl_inode)
                      lock->client, NULL, &lock->granted_time.tv_sec,
                      &lock->blkd_time.tv_sec,
                      (lock->blocked) ? _gf_false : _gf_true);
-        gf_proc_dump_write(key, tmp);
+        gf_proc_dump_write(key, "%s", tmp);
 
         count++;
     }
diff --git a/xlators/features/quota/src/quota.c b/xlators/features/quota/src/quota.c
index af3e8a48b7f..44f00580495 100644
--- a/xlators/features/quota/src/quota.c
+++ b/xlators/features/quota/src/quota.c
@@ -5108,7 +5108,7 @@ quota_priv_dump(xlator_t *this)
     if (!priv)
         goto out;
 
-    gf_proc_dump_add_section("xlators.features.quota.priv", this->name);
+    gf_proc_dump_add_section("xlators.features.quota.priv");
 
     ret = TRY_LOCK(&priv->lock);
     if (ret)
diff --git a/xlators/features/shard/src/shard.c b/xlators/features/shard/src/shard.c
index e721526d4bc..365147a3a95 100644
--- a/xlators/features/shard/src/shard.c
+++ b/xlators/features/shard/src/shard.c
@@ -6750,12 +6750,12 @@ shard_priv_dump(xlator_t *this)
     priv = this->private;
 
     snprintf(key_prefix, GF_DUMP_MAX_BUF_LEN, "%s.%s", this->type, this->name);
-    gf_proc_dump_add_section(key_prefix);
+    gf_proc_dump_add_section("%s", key_prefix);
     str = gf_uint64_2human_readable(priv->block_size);
     gf_proc_dump_write("shard-block-size", "%s", str);
     gf_proc_dump_write("inode-count", "%d", priv->inode_count);
     gf_proc_dump_write("ilist_head", "%p", &priv->ilist_head);
-    gf_proc_dump_write("lru-max-limit", "%d", priv->lru_limit);
+    gf_proc_dump_write("lru-max-limit", "%" PRIu64, priv->lru_limit);
 
     GF_FREE(str);