From 92c70c86d8d7c023e16c87a1bd39cc0d7981d017 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Fri, 12 Jul 2013 19:06:00 -0600
Subject: More Zmodem-related changes

---
 apps/system/zmodem/sz_main.c  | 180 +++++++++++++++++++++++++++++++++++++++---
 apps/system/zmodem/zm.h       |   2 +-
 apps/system/zmodem/zm_proto.c |  14 ++--
 3 files changed, 176 insertions(+), 20 deletions(-)

(limited to 'apps')

diff --git a/apps/system/zmodem/sz_main.c b/apps/system/zmodem/sz_main.c
index 6f77042c1..c6693f0b5 100644
--- a/apps/system/zmodem/sz_main.c
+++ b/apps/system/zmodem/sz_main.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * system/xmodem/sz_main.c
+ * system/zmodem/sz_main.c
  *
  *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
@@ -40,28 +40,182 @@
 #include <nuttx/config.h>
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <time.h>
+#include <errno.h>
 
 #include <apps/zmodem.h>
 
 /****************************************************************************
- * Definitions
+ * Private Functions
  ****************************************************************************/
 
-/****************************************************************************
- * Private Data
- ****************************************************************************/
+static void show_usage(FAR const char *progname, int errcode)
+{
+  fprintf(stderr, "USAGE: %s [OPTIONS] <lname> [<lname> [<lname> ...]]\n", progname);
+  fprintf(stderr, "\nWhere:\n");
+  fprintf(stderr, "\t<lname> is the local file name\n");
+  fprintf(stderr, "\nand OPTIONS include the following:\n");
+  fprintf(stderr, "\t-d <device>: Communication device to use.  Default /dev/console\n");
+  fprintf(stderr, "\t-r <rname>: Remote file name.  Default <lname>\n");
+  fprintf(stderr, "\t-x <mode>: Transfer type\n");
+  fprintf(stderr, "\t\t0: Normal file (default)\n");
+  fprintf(stderr, "\t\t1: Binary file\n");
+  fprintf(stderr, "\t\t2: Convert \\n to local EOF convention\n");
+  fprintf(stderr, "\t\t3: Resume or append to existing file\n");
+  fprintf(stderr, "\t-o <option>: Transfer option\n");
+  fprintf(stderr, "\t\t0: Implementation dependent\n");
+  fprintf(stderr, "\t\t1: Transfer if source newer or longer\n");
+  fprintf(stderr, "\t\t2: Transfer if different CRC or length\n");
+  fprintf(stderr, "\t\t3: Append to existing file, if any\n");
+  fprintf(stderr, "\t\t4: Replace existing file (default)\n");
+  fprintf(stderr, "\t\t5: Transfer if source is newer\n");
+  fprintf(stderr, "\t\t6: Transfer if dates or lengths different\n");
+  fprintf(stderr, "\t\t7: Protect: transfer only if dest doesn't exist\n");
+  fprintf(stderr, "\t\t8: Change filename if destination exists\n");
+  fprintf(stderr, "\t-s: Skip if file not present at receiving end\n");
+  fprintf(stderr, "\t-h: Show this text and exit\n");
+  exit(errcode);
+}
 
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
 
-/****************************************************************************
- * Name: sz_main
- ****************************************************************************/
-
-int sz_main(int argc, char *argv[])
+int sz_main(int argc, FAR char **argv)
 {
-  printf("Not yet implemented!!\n");
-  return 0;
-}
+  enum zm_xfertype_e xfrtype = XM_XFERTYPE_NORMAL;
+  enum zm_option_e xfroption = XM_OPTION_REPLACE;
+  ZMSHANDLE handle;
+  FAR const char *rname = NULL;
+  FAR const char *devname = "/dev/console";
+  FAR char *endptr;
+  bool skip = false;
+  long tmp;
+  int exitcode = EXIT_FAILURE;
+  int option;
+  int ret;
+  int fd;
+
+  /* Parse input parameters */
+
+  while ((option = getopt(argc, argv, ":d:ho:r:sx:")) != ERROR)
+    {
+      switch (option)
+        {
+          case 'd':
+            devname = optarg;
+            break;
+
+          case 'h':
+            show_usage(argv[0], EXIT_SUCCESS);
+            break;
+
+          case 'o':
+            tmp = strtol(optarg, &endptr, 10);
+            if (tmp < 0 || tmp > 8)
+              {
+                fprintf(stderr, "ERROR: Transfer option out of range: %ld\n", tmp);
+                show_usage(argv[0], EXIT_FAILURE);
+              }
+            else
+              {
+                xfroption = (enum zm_option_e)tmp;
+              }
+            break;
+
+          case 'r':
+            rname = optarg;
+            break;
+
+          case 's':
+             skip = true;
+             break;
+
+          case 'x':
+            tmp = strtol(optarg, &endptr, 10);
+            if (tmp < 0 || tmp > 3)
+              {
+                fprintf(stderr, "ERROR: Transfer type out of range: %ld\n", tmp);
+                show_usage(argv[0], EXIT_FAILURE);
+              }
+            else
+              {
+                xfrtype = (enum zm_xfertype_e)tmp;
+              }
+            break;
 
+          case ':':
+            fprintf(stderr, "ERROR: Missing required argument\n");
+            show_usage(argv[0], EXIT_FAILURE);
+            break;
+
+          default:
+          case '?':
+            fprintf(stderr, "ERROR: Unrecognized option\n");
+            show_usage(argv[0], EXIT_FAILURE);
+            break;
+        }
+    }
+
+  /* There should be one final parameters remaining on the command line */
+
+  if (optind >= argc)
+    {
+      printf("ERROR: Missing required 'lname' argument\n");
+      show_usage(argv[0], EXIT_FAILURE);
+    }
+
+  /* Open the device for read/write access */
+
+  fd = open(devname, O_RDWR);
+  if (fd < 0)
+    {
+      fprintf(stderr, "ERROR: Failed to open %s\n", devname);
+      goto errout;
+    }
+
+  /* Get the Zmodem handle */
+
+  handle = zms_initialize(fd);
+  if (!handle)
+    {
+      fprintf(stderr, "ERROR: Failed to get Zmodem handle\n");
+      goto errout_with_device;
+    }
+
+  /* And perform the transfer(s) */
+
+  for (; optind < argc; optind++)
+    {
+      /* By the default, the remote file name is the same as the local file
+       * name.  This will, of course, fail miserably if rname is specified
+       * and there more than one lnames on the command line.  Don't do that.
+       */
+
+      FAR const char *nextlname = argv[optind];
+      FAR const char *nextrname = rname ? rname : nextlname;
+
+      /* Transfer the file */
+
+      ret = zms_send(handle, nextlname, nextrname, xfrtype, xfroption, skip);
+      if (ret < 0)
+        {
+          fprintf(stderr, "ERROR: Transfer of %s failed: %d\n",
+                  nextlname, errno);
+          goto errout_with_zmodem;
+       }
+    }
+
+  exitcode = EXIT_SUCCESS;
+
+errout_with_zmodem:
+  (void)zms_release(handle);
+errout_with_device:
+  (void)close(fd);
+errout:
+  return exitcode;
+}
diff --git a/apps/system/zmodem/zm.h b/apps/system/zmodem/zm.h
index 3747b0feb..e0caf8837 100644
--- a/apps/system/zmodem/zm.h
+++ b/apps/system/zmodem/zm.h
@@ -603,7 +603,7 @@ FAR uint8_t *zm_putzdle(FAR struct zm_state_s *pzm, FAR uint8_t *buffer,
  *
  * Input Parameters:
  *   pzm    - Zmodem session state
- *   buffer - Buffer of data to be sent (must not be pzm->rcvbuf)
+ *   buffer - Buffer of data to be sent
  *   buflen - The number of bytes in buffer to be sent
  *
  ****************************************************************************/
diff --git a/apps/system/zmodem/zm_proto.c b/apps/system/zmodem/zm_proto.c
index 4ef1c143d..9af600f8a 100644
--- a/apps/system/zmodem/zm_proto.c
+++ b/apps/system/zmodem/zm_proto.c
@@ -169,8 +169,8 @@ FAR uint8_t *zm_putzdle(FAR struct zm_state_s *pzm, FAR uint8_t *buffer,
  *   (ZBIN or ZBIN32 format assumed, ZCRCW terminator is always used)
  *
  * Input Parameters:
- *   pzm - Zmodem session state
- *   buffer - Buffer of data to be sent (must not be pzm->rcvbuf)
+ *   pzm    - Zmodem session state
+ *   buffer - Buffer of data to be sent
  *   buflen - The number of bytes in buffer to be sent
  *
  ****************************************************************************/
@@ -178,21 +178,24 @@ FAR uint8_t *zm_putzdle(FAR struct zm_state_s *pzm, FAR uint8_t *buffer,
 int zm_senddata(FAR struct zm_state_s *pzm, FAR const uint8_t *buffer,
                 size_t buflen)
 {
-  uint8_t *ptr = pzm->rcvbuf;
+  uint8_t *ptr = pzm->scratch;
   ssize_t nwritten;
   uint32_t crc;
   uint8_t zbin;
   uint8_t term;
+  int i;
 
   /* Make select ZBIN or ZBIN32 format and the ZCRCW terminator */
 
   if ((pzm->flags & ZM_FLAG_CRC32) != 0)
     {
       zbin = ZBIN32;
+      crc  = 0xffffffff;
     }
   else
     {
       zbin = ZBIN;
+      crc  = 0;
     }
 
   term = ZCRCW;
@@ -200,7 +203,6 @@ int zm_senddata(FAR struct zm_state_s *pzm, FAR const uint8_t *buffer,
 
   /* Transfer the data to the I/O buffer, accumulating the CRC */
 
-  crc = (zbin == ZBIN) ? 0 : 0xffffffff;
   while (buflen-- > 0)
     {
       if (zbin == ZBIN)
@@ -243,7 +245,7 @@ int zm_senddata(FAR struct zm_state_s *pzm, FAR const uint8_t *buffer,
   else
     {
       crc = ~crc;
-      for (buflen = 4; --buflen >= 0; crc >>= 8)
+      for (i = 0; i < 4; i++, crc >>= 8)
         {
           ptr = zm_putzdle(pzm, ptr, crc & 0xff);
         }
@@ -251,7 +253,7 @@ int zm_senddata(FAR struct zm_state_s *pzm, FAR const uint8_t *buffer,
 
   /* Send the header */
 
-  nwritten = zm_remwrite(pzm->remfd, pzm->rcvbuf, ptr - pzm->rcvbuf);
+  nwritten = zm_remwrite(pzm->remfd, pzm->scratch, ptr - pzm->scratch);
   return nwritten < 0 ? (int)nwritten : OK;
 }
 
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