Fix minor memory leaks

* src/assuan-pipe-connect.c (socketpair_connect): Always free
CHILD_FDS.
* src/assuan-uds.c (uds_sendfd): Clear CONTROL_U to silence Valgrind.
* tests/fdpassing.c (main): Free FNAME.

* src/assuan-handler.c (dispatch_command): Remove dead assignment.

Signed-off-by: Werner Koch <wk@gnupg.org>

4 files changed, 24 insertions, 19 deletions

diff --git a/src/assuan-handler.c b/src/assuan-handler.c
index 351446d..dec0f1b 100644
--- a/src/assuan-handler.c
+++ b/src/assuan-handler.c
@@ -661,7 +661,7 @@ dispatch_command (assuan_context_t ctx, char *line, int linelen)
   if (!s)
     return PROCESS_DONE (ctx, set_error (ctx, GPG_ERR_ASS_UNKNOWN_CMD, NULL));
   line += shift;
-  linelen -= shift;
+  /* linelen -= shift; -- not needed.  */
 
   if (ctx->pre_cmd_notify_fnc) {
     err = ctx->pre_cmd_notify_fnc(ctx, ctx->cmdtbl[i].name);
diff --git a/src/assuan-pipe-connect.c b/src/assuan-pipe-connect.c
index e5d2a38..a657c94 100644
--- a/src/assuan-pipe-connect.c
+++ b/src/assuan-pipe-connect.c
@@ -347,10 +347,11 @@ socketpair_connect (assuan_context_t ctx,
 	fd_child_list[idx] = child_fds[idx + 1];
     }
 
+  _assuan_free (ctx, child_fds);
+
   /* If this is the server child process, exit early.  */
   if (! name && (*argv)[0] == 's')
     {
-      _assuan_free (ctx, child_fds);
       _assuan_close (ctx, fds[0]);
       return 0;
     }
diff --git a/src/assuan-uds.c b/src/assuan-uds.c
index dd77af4..59f3a6b 100644
--- a/src/assuan-uds.c
+++ b/src/assuan-uds.c
@@ -34,7 +34,7 @@
 #else
 # ifdef HAVE_WINSOCK2_H
 #  include <winsock2.h>
-# endif 
+# endif
 # include <windows.h>
 #endif
 #if HAVE_SYS_UIO_H
@@ -60,10 +60,10 @@
 #define MY_ALIGN(n) ((((n))+ sizeof(size_t)-1) & (size_t)~(sizeof(size_t)-1))
 #ifndef CMSG_SPACE
 #define CMSG_SPACE(n) (MY_ALIGN(sizeof(struct cmsghdr)) + MY_ALIGN((n)))
-#endif 
+#endif
 #ifndef CMSG_LEN
 #define CMSG_LEN(n) (MY_ALIGN(sizeof(struct cmsghdr)) + (n))
-#endif 
+#endif
 #ifndef CMSG_FIRSTHDR
 #define CMSG_FIRSTHDR(mhdr) \
   ((size_t)(mhdr)->msg_controllen >= sizeof (struct cmsghdr)		      \
@@ -200,12 +200,14 @@ uds_sendfd (assuan_context_t ctx, assuan_fd_t fd)
   char buffer[80];
 
   /* We need to send some real data so that a read won't return 0
-     which will be taken as an EOF.  It also helps with debugging. */ 
+     which will be taken as an EOF.  It also helps with debugging. */
   snprintf (buffer, sizeof(buffer)-1, "# descriptor %d is in flight\n", fd);
   buffer[sizeof(buffer)-1] = 0;
 
   memset (&msg, 0, sizeof (msg));
 
+  memset (&control_u, 0, sizeof (control_u));
+
   msg.msg_name = NULL;
   msg.msg_namelen = 0;
   msg.msg_iovlen = 1;
diff --git a/tests/fdpassing.c b/tests/fdpassing.c
index fee5ba0..1156ad7 100644
--- a/tests/fdpassing.c
+++ b/tests/fdpassing.c
@@ -59,10 +59,10 @@ cmd_echo (assuan_context_t ctx, char *line)
   nbytes = 0;
   while ( (c=getc (fp)) != -1)
     {
-      putc (c, stdout); 
+      putc (c, stdout);
       nbytes++;
     }
-  fflush (stdout); 
+  fflush (stdout);
   log_info ("done printing %d bytes to stdout\n", nbytes);
 
   fclose (fp);
@@ -118,7 +118,7 @@ server (void)
 
   assuan_set_log_stream (ctx, stderr);
 
-  for (;;) 
+  for (;;)
     {
       rc = assuan_accept (ctx);
       if (rc)
@@ -127,7 +127,7 @@ server (void)
             log_error ("assuan_accept failed: %s\n", gpg_strerror (rc));
           break;
         }
-      
+
       log_info ("client connected.  Client's pid is %ld\n",
                 (long)assuan_get_pid (ctx));
 
@@ -135,7 +135,7 @@ server (void)
       if (rc)
         log_error ("assuan_process failed: %s\n", gpg_strerror (rc));
     }
-  
+
   assuan_release (ctx);
 }
 
@@ -169,7 +169,7 @@ client (assuan_context_t ctx, const char *fname)
                      strerror (errno));
           return -1;
         }
-      
+
       rc = assuan_sendfd (ctx, fileno (fp));
       if (rc)
         {
@@ -204,12 +204,12 @@ client (assuan_context_t ctx, const char *fname)
 
 
 
-/* 
- 
+/*
+
      M A I N
 
 */
-int 
+int
 main (int argc, char **argv)
 {
   int last_argc = -1;
@@ -294,17 +294,18 @@ main (int argc, char **argv)
       if (err)
         {
           log_error ("assuan_pipe_connect failed: %s\n", gpg_strerror (err));
-          return 1;
+          assuan_release (ctx);
+          errorcount++;
         }
-      
-      if (!with_exec && loc[0] == 's')
+      else if (!with_exec && loc[0] == 's')
         {
           server ();
+          assuan_release (ctx);
           log_info ("server finished\n");
         }
       else
         {
-          if (client (ctx, fname)) 
+          if (client (ctx, fname))
             {
               log_info ("waiting for server to terminate...\n");
               assuan_release (ctx);
@@ -313,6 +314,7 @@ main (int argc, char **argv)
         }
     }
 
+  xfree (fname);
   return errorcount ? 1 : 0;
 }