udhcp: support string user options, closes 10946

function                                             old     new   delta
udhcp_str2optset                                     536     628     +92
packed_usage                                       32757   32760      +3
udhcpc_main                                         2708    2692     -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 95/-16)             Total: 79 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 8 deletions

diff --git a/networking/udhcp/d6_dhcpc.c b/networking/udhcp/d6_dhcpc.c
index 289df66ee..85d9da724 100644
--- a/networking/udhcp/d6_dhcpc.c
+++ b/networking/udhcp/d6_dhcpc.c
@@ -1063,6 +1063,7 @@ static void client_background(void)
 //usage:     "\n                        -x hostname:bbox - option 12"
 //usage:     "\n                        -x lease:3600 - option 51 (lease time)"
 //usage:     "\n                        -x 0x3d:0100BEEFC0FFEE - option 61 (client id)"
+//usage:     "\n                        -x 14:'\"dumpfile\"' - option 14 (shell-quoted)"
 //usage:        IF_UDHCP_VERBOSE(
 //usage:     "\n        -v              Verbose"
 //usage:        )
@@ -1155,15 +1156,9 @@ int udhcpc6_main(int argc UNUSED_PARAM, char **argv)
                 }
         }
         while (list_x) {
-                char *optstr = llist_pop(&list_x);
-                char *colon = strchr(optstr, ':');
-                if (colon)
-                        *colon = ' ';
-                /* now it looks similar to udhcpd's config file line:
-                 * "optname optval", using the common routine: */
+                char *optstr = xstrdup(llist_pop(&list_x));
                 udhcp_str2optset(optstr, &client_config.options, d6_optflags, d6_option_strings);
-                if (colon)
-                        *colon = ':'; /* restore it for NOMMU reexec */
+                free(optstr);
         }
 
         if (d6_read_interface(client_config.interface,