Arguments may be added between "interface" and the subcommands "add" and
"del". Thus is should not be hardcoded which positions of argv the
subcommands start and instead the information from getopt should be used to
calculate the correct position.
Signed-off-by: Sven Eckelmann <s...@narfation.org>
---
sys.c | 51 ++++++++++++++++++++++++++++-----------------------
1 file changed, 28 insertions(+), 23 deletions(-)
diff --git a/sys.c b/sys.c
index ac78d37..7cd2690 100644
--- a/sys.c
+++ b/sys.c
@@ -383,6 +383,8 @@ int interface(char *mesh_iface, int argc, char **argv)
unsigned int ifmaster;
const char *long_op;
unsigned int cnt;
+ int rest_argc;
+ char **rest_argv;
while ((optchar = getopt(argc, argv, "h")) != -1) {
switch (optchar) {
@@ -395,38 +397,41 @@ int interface(char *mesh_iface, int argc, char **argv)
}
}
- if (argc == 1)
+ rest_argc = argc - optind;
+ rest_argv = &argv[optind];
+
+ if (rest_argc == 0)
return print_interfaces(mesh_iface);
- if ((strcmp(argv[1], "add") != 0) && (strcmp(argv[1], "a") != 0) &&
- (strcmp(argv[1], "del") != 0) && (strcmp(argv[1], "d") != 0) &&
- (strcmp(argv[1], "new") != 0) && (strcmp(argv[1], "n") != 0) &&
- (strcmp(argv[1], "destroy") != 0) && (strcmp(argv[1], "D") != 0)) {
- fprintf(stderr, "Error - unknown argument specified: %s\n",
argv[1]);
+ if ((strcmp(rest_argv[0], "add") != 0) && (strcmp(rest_argv[0], "a") !=
0) &&
+ (strcmp(rest_argv[0], "del") != 0) && (strcmp(rest_argv[0], "d") !=
0) &&
+ (strcmp(rest_argv[0], "new") != 0) && (strcmp(rest_argv[0], "n") !=
0) &&
+ (strcmp(rest_argv[0], "destroy") != 0) && (strcmp(rest_argv[0],
"D") != 0)) {
+ fprintf(stderr, "Error - unknown argument specified: %s\n",
rest_argv[0]);
interface_usage();
goto err;
}
- if (strcmp(argv[1], "destroy") == 0)
- argv[1][0] = 'D';
+ if (strcmp(rest_argv[0], "destroy") == 0)
+ rest_argv[0][0] = 'D';
- switch (argv[1][0]) {
+ switch (rest_argv[0][0]) {
case 'a':
case 'd':
- if (argc == 2) {
+ if (rest_argc == 1) {
fprintf(stderr,
"Error - missing interface name(s) after
'%s'\n",
- argv[1]);
+ rest_argv[0]);
interface_usage();
goto err;
}
break;
case 'n':
case 'D':
- if (argc != 2) {
+ if (rest_argc != 1) {
fprintf(stderr,
"Error - extra parameter after '%s'\n",
- argv[1]);
+ rest_argv[0]);
interface_usage();
goto err;
}
@@ -435,7 +440,7 @@ int interface(char *mesh_iface, int argc, char **argv)
break;
}
- switch (argv[1][0]) {
+ switch (rest_argv[0][0]) {
case 'n':
ret = new_interface(mesh_iface);
if (ret < 0) {
@@ -460,7 +465,7 @@ int interface(char *mesh_iface, int argc, char **argv)
/* get index of batman-adv interface - or try to create it */
ifmaster = if_nametoindex(mesh_iface);
- if (!ifmaster && argv[1][0] == 'a') {
+ if (!ifmaster && rest_argv[0][0] == 'a') {
ret = new_interface(mesh_iface);
if (ret < 0) {
fprintf(stderr,
@@ -486,34 +491,34 @@ int interface(char *mesh_iface, int argc, char **argv)
goto err;
}
- for (i = 2; i < argc; i++) {
- ifindex = if_nametoindex(argv[i]);
+ for (i = 1; i < rest_argc; i++) {
+ ifindex = if_nametoindex(rest_argv[i]);
if (!ifindex) {
- fprintf(stderr, "Error - interface does not exist:
%s\n", argv[i]);
+ fprintf(stderr, "Error - interface does not exist:
%s\n", rest_argv[i]);
continue;
}
- if (argv[1][0] == 'a')
+ if (rest_argv[0][0] == 'a')
ifindex = ifmaster;
else
ifindex = 0;
- ret = set_master_interface(argv[i], ifindex);
+ ret = set_master_interface(rest_argv[i], ifindex);
if (ret < 0) {
- if (argv[1][0] == 'a')
+ if (rest_argv[0][0] == 'a')
long_op = "add";
else
long_op = "delete";
fprintf(stderr, "Error - failed to %s interface %s:
%s\n",
- long_op, argv[i], strerror(-ret));
+ long_op, rest_argv[i], strerror(-ret));
goto err;
}
}
/* check if there is no interface left and then destroy mesh_iface */
- if (argv[1][0] == 'd') {
+ if (rest_argv[0][0] == 'd') {
cnt = count_interfaces(mesh_iface);
if (cnt == 0)
destroy_interface(mesh_iface);
--
2.8.1
