more const, use bb_getopt_ulflags, insert XXX for show place of problems

diff --git a/networking/tftp.c b/networking/tftp.c
index 9b97477..96d8f3b 100644 (file)
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -60,7 +60,7 @@
 #define TFTP_ERROR 5
 #define TFTP_OACK  6
 
-static const char *tftp_bb_error_msg[] = {
+static const char * const tftp_bb_error_msg[] = {
        "Undefined error",
        "File not found",
        "Access violation",
@@ -71,8 +71,17 @@ static const char *tftp_bb_error_msg[] = {
        "No such user"
 };
 
-static const int tftp_cmd_get = 1;
-static const int tftp_cmd_put = 2;
+#ifdef CONFIG_FEATURE_TFTP_GET
+# define tftp_cmd_get 1
+#else
+# define tftp_cmd_get 0
+#endif
+#ifdef CONFIG_FEATURE_TFTP_PUT
+# define tftp_cmd_put (tftp_cmd_get+1)
+#else
+# define tftp_cmd_put 0
+#endif
+
 
 #ifdef CONFIG_FEATURE_TFTP_BLOCKSIZE
 
@@ -375,7 +384,7 @@ static inline int tftp(const int cmd, const struct hostent *host,
 #endif
 
                if (opcode == TFTP_ERROR) {
-                       char *msg = NULL;
+                       const char *msg = NULL;
 
                        if (buf[4] != '\0') {
                                msg = &buf[4];
@@ -383,7 +392,7 @@ static inline int tftp(const int cmd, const struct hostent *host,
                        } else if (tmp < (sizeof(tftp_bb_error_msg)
                                          / sizeof(char *))) {
 
-                               msg = (char *) tftp_bb_error_msg[tmp];
+                               msg = tftp_bb_error_msg[tmp];
                        }
 
                        if (msg) {
@@ -509,71 +518,75 @@ int tftp_main(int argc, char **argv)
        /* figure out what to pass to getopt */
 
 #ifdef CONFIG_FEATURE_TFTP_BLOCKSIZE
+       char *sblocksize = NULL;
 #define BS "b:"
+#define BS_ARG , &sblocksize
 #else
 #define BS
+#define BS_ARG
 #endif
 
 #ifdef CONFIG_FEATURE_TFTP_GET
 #define GET "g"
+#define GET_COMPL ":g"
 #else
 #define GET
+#define GET_COMP
 #endif
 
 #ifdef CONFIG_FEATURE_TFTP_PUT
 #define PUT "p"
+#define PUT_COMPL ":p"
 #else
 #define PUT
+#define PUT_COMPL
 #endif
 
-       while ((opt = getopt(argc, argv, BS GET PUT "l:r:")) != -1) {
-               switch (opt) {
+#if defined(CONFIG_FEATURE_TFTP_GET) && defined(CONFIG_FEATURE_TFTP_PUT)
+       bb_opt_complementally = GET_COMPL PUT_COMPL ":?g--p:p--g";
+#elif defined(CONFIG_FEATURE_TFTP_GET) || defined(CONFIG_FEATURE_TFTP_PUT)
+       bb_opt_complementally = GET_COMPL PUT_COMPL;
+#else
+       /* XXX: may be should #error ? */
+#endif
+
+       
+       opt = bb_getopt_ulflags(argc, argv, GET PUT "l:r:" BS, 
+                               &localfile, &remotefile BS_ARG);
 #ifdef CONFIG_FEATURE_TFTP_BLOCKSIZE
-               case 'b':
-                       blocksize = atoi(optarg);
-                       if (!tftp_blocksize_check(blocksize, 0)) {
-                                return EXIT_FAILURE;
-                       }
-                       break;
+       if(sblocksize) {
+               blocksize = atoi(sblocksize);
+               if (!tftp_blocksize_check(blocksize, 0)) {
+                       return EXIT_FAILURE;
+               }
+       }
 #endif
+
+       cmd &= (tftp_cmd_get & tftp_cmd_put);
 #ifdef CONFIG_FEATURE_TFTP_GET
-               case 'g':
-                       cmd = tftp_cmd_get;
-                       flags = O_WRONLY | O_CREAT | O_TRUNC;
-                       break;
+       if(cmd == tftp_cmd_get)
+               flags = O_WRONLY | O_CREAT | O_TRUNC;
 #endif
 #ifdef CONFIG_FEATURE_TFTP_PUT
-               case 'p':
-                       cmd = tftp_cmd_put;
-                       flags = O_RDONLY;
-                       break;
+       if(cmd == tftp_cmd_put)
+               flags = O_RDONLY;
 #endif
-               case 'l':
-                       localfile = optarg;
-                       break;
-               case 'r':
-                       remotefile = optarg;
-                       break;
-               }
-       }
 
-       if ((cmd == 0) || (optind == argc)) {
-               bb_show_usage();
-       }
-       if(localfile && strcmp(localfile, "-") == 0) {
-           fd = fileno((cmd==tftp_cmd_get)? stdout : stdin);
-       }
        if(localfile == NULL)
            localfile = remotefile;
        if(remotefile == NULL)
            remotefile = localfile;
-       if (fd==-1) {
+       /* XXX: I corrected this, but may be wrong too. vodz */
+       if(localfile==NULL || strcmp(localfile, "-") == 0) {
+           fd = fileno((cmd==tftp_cmd_get)? stdout : stdin);
+       } else if (fd==-1) {
            fd = open(localfile, flags, 0644);
        }
        if (fd < 0) {
                bb_perror_msg_and_die("local file");
        }
 
+       /* XXX: argv[optind] and/or argv[optind + 1] may be NULL! */
        host = xgethostbyname(argv[optind]);
        port = bb_lookup_port(argv[optind + 1], "udp", 69);