daemon: Split out checksum type to program name mapping into function.

This shouldn't change the semantics of the program.

diff --git a/daemon/checksum.c b/daemon/checksum.c
index 13719fd..4ee6231 100644 (file)
--- a/daemon/checksum.c
+++ b/daemon/checksum.c
@@ -27,32 +27,40 @@
 #include "daemon.h"
 #include "actions.h"
 
-static char *
-checksum (const char *csumtype, const char *path)
+static const char *
+program_of_csum (const char *csumtype)
 {
-  const char *program;
-  char *out, *err;
-  int r;
-  int len;
-
   if (STRCASEEQ (csumtype, "crc"))
-    program = "cksum";
+    return "cksum";
   else if (STRCASEEQ (csumtype, "md5"))
-    program = "md5sum";
+    return "md5sum";
   else if (STRCASEEQ (csumtype, "sha1"))
-    program = "sha1sum";
+    return "sha1sum";
   else if (STRCASEEQ (csumtype, "sha224"))
-    program = "sha224sum";
+    return "sha224sum";
   else if (STRCASEEQ (csumtype, "sha256"))
-    program = "sha256sum";
+    return "sha256sum";
   else if (STRCASEEQ (csumtype, "sha384"))
-    program = "sha384sum";
+    return "sha384sum";
   else if (STRCASEEQ (csumtype, "sha512"))
-    program = "sha512sum";
+    return "sha512sum";
   else {
     reply_with_error ("unknown checksum type, expecting crc|md5|sha1|sha224|sha256|sha384|sha512");
     return NULL;
   }
+}
+
+static char *
+checksum (const char *csumtype, const char *path)
+{
+  const char *program;
+  char *out, *err;
+  int r;
+  int len;
+
+  program = program_of_csum (csumtype);
+  if (program == NULL)
+    return NULL;
 
   r = command (&out, &err, program, path, NULL);
   if (r == -1) {