nserve: Add ncmd.h

* nserver/src/nserve.c (sanitize, check_cmd): Move functions ...
* nserver/src/ncmd.c (sanitize, check_cmd): ... here.
* nserver/src/nserve.h (CMD_MIN_SIZE, CMD_MAX_SIZE): Move constants...
* nserver/src/ncmd.h (CMD_MIN_SIZE, CMD_MAX_SIZE): ... here.
(sanitize, check_cmd): New function declarations.

4 files changed, 57 insertions, 45 deletions

diff --git a/nserver/src/ncmd.c b/nserver/src/ncmd.c
new file mode 100644
index 0000000..05785ba
--- /dev/null
+++ b/nserver/src/ncmd.c
@@ -0,0 +1,42 @@
+#include <ncmd.h>
+
+int sanitize(char *cmd)
+{
+    check(cmd != NULL, "cmd is NULL");
+
+    size_t len = strlen(cmd);
+    check(len > 0, "cmd empty");
+
+    // strip newline character at the end.
+    cmd[len - 1] = '\0';
+
+    return 0;
+ error:
+    return -1;
+}
+
+char *check_cmd(char *cmd)
+{
+    char *err = NULL;
+
+    check(cmd != NULL, "cmd is NULL");
+
+    int rc = sanitize(cmd);
+    check(rc != -1, "sanitize failed");
+
+    size_t len = strlen(cmd);
+    if (len >= CMD_MIN_SIZE && len <= CMD_MAX_SIZE) {
+        return NULL;
+    }
+
+    if (len == 0) {
+        err = "closing connection\n";
+    } else {
+        err = "command size invalid\n";
+    }
+
+    return err;
+ error:
+    err = "internal error\n";
+    return err;
+}
diff --git a/nserver/src/ncmd.h b/nserver/src/ncmd.h
new file mode 100644
index 0000000..75ac357
--- /dev/null
+++ b/nserver/src/ncmd.h
@@ -0,0 +1,14 @@
+#ifndef _ncmd_h
+#define _ncmd_h
+
+#include <string.h>
+
+#include <dbg.h>
+
+#define CMD_MIN_SIZE 5
+#define CMD_MAX_SIZE 120
+
+int sanitize(char *cmd);
+char *check_cmd(char *cmd);
+
+#endif
diff --git a/nserver/src/nserve.c b/nserver/src/nserve.c
index 316fdd1..8008562 100644
--- a/nserver/src/nserve.c
+++ b/nserver/src/nserve.c
@@ -25,48 +25,6 @@ int barfsock(char *buf, size_t buf_sz, int sock)
     return -1;
 }
 
-int sanitize(char *cmd)
-{
-    check(cmd != NULL, "cmd is NULL");
-
-    size_t len = strlen(cmd);
-    check(len > 0, "cmd empty");
-
-    // strip newline character at the end.
-    cmd[len - 1] = '\0';
-
-    return 0;
- error:
-    return -1;
-}
-
-char *check_cmd(char *cmd)
-{
-    char *err = NULL;
-
-    check(cmd != NULL, "cmd is NULL");
-
-    int rc = sanitize(cmd);
-    check(rc != -1, "sanitize failed");
-
-    size_t len = strlen(cmd);
-    if (len >= CMD_MIN_SIZE && len <= CMD_MAX_SIZE) {
-        return NULL;
-    }
-
-    if (len == 0) {
-        err = "closing connection\n";
-    } else {
-        err = "command size invalid\n";
-    }
-
-    return err;
- error:
-    err = "internal error\n";
-    return err;
-}
-
-
 void nserve(int sock)
 {
     size_t cmd_sz = 200;
diff --git a/nserver/src/nserve.h b/nserver/src/nserve.h
index 75281ec..4ef8f60 100644
--- a/nserver/src/nserve.h
+++ b/nserver/src/nserve.h
@@ -7,12 +7,10 @@
 #include <sys/socket.h>
 
 #include <bstrlib.h>
+#include <ncmd.h>
 #include <dbg.h>
 #include <ringbuffer.h>
 
-#define CMD_MIN_SIZE 5
-#define CMD_MAX_SIZE 120
-
 void nserve(int sock);
 
 #endif