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Parse command-line args

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This commit is contained in:
Joseph C. Lehner 2016-01-25 14:11:49 +01:00
parent 5d2f3382d1
commit 4d69e844c4
1 changed files with 74 additions and 21 deletions
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95
main.c
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@ -1,44 +1,97 @@
#include <getopt.h>
#include <stdlib.h>
#include <stdio.h>
#include "nmrpd.h"
void usage()
void usage(FILE *fp)
{
printf(
"Usage: nmrpd [options] [command] [command args]\n"
fprintf(fp,
"Usage: nmrpd [OPTIONS...]\n"
"\n"
"Available options:\n"
" -m [mac] MAC address of target device (xx:xx:xx:xx:xx:xx)\n"
" -a [ipaddr] IP address to assign to target device\n"
" -M [netmask] Subnet mask to assign to target device\n"
" -t [timeout] Timeout (in milliseconds) for regular messages\n"
" -T [timeout] Time to wait after successfull TFTP upload\n"
" -p [port] Port to use for TFTP upload\n"
" -i [interface] Network interface directly connected to device\n"
"Options:\n"
" -a <ipaddr> IP address to assign to target device\n"
" -f <firmware> Firmware file\n"
" -i <interface> Network interface directly connected to device\n"
" -m <mac> MAC address of target device (xx:xx:xx:xx:xx:xx)\n"
" -M <netmask> Subnet mask to assign to target device\n"
" -t <timeout> Timeout (in milliseconds) for regular messages\n"
" -T <timeout> Time to wait after successfull TFTP upload\n"
" -p <port> Port to use for TFTP upload\n"
" -h Show this screen\n"
"\n"
"Available commands:\n"
" set-region Set region of device\n"
" upload-firmware Upload new firmware\n"
" upload-strings Upload string table\n"
"Options -a, -i and -f are mandatory!\n"
"\n"
);
}
int main(int argc, char **argv)
{
int c, val, max;
struct nmrpd_args args = {
.rx_timeout = 200,
.ul_timeout = 60000,
.filename = argc >= 2 ? argv[1] : NULL,
.ipaddr = "192.168.2.2",
.filename = NULL,
.ipaddr = NULL,
.ipmask = "255.255.255.0",
.intf = "enp4s0",
.intf = NULL,
.mac = "ff:ff:ff:ff:ff:ff",
.op = NMRP_UPLOAD_FW,
.port = 69,
.force_root = 0
.force_root = 1
};
opterr = 0;
while ((c = getopt(argc, argv, "a:f:i:m:M:p:t:T:")) != -1) {
max = 0xffffffff;
switch (c) {
case 'a':
args.ipaddr = optarg;
break;
case 'f':
args.filename = optarg;
break;
case 'i':
args.intf = optarg;
break;
case 'm':
args.mac = optarg;
break;
case 'M':
args.ipmask = optarg;
break;
case 'p':
max = 0xffff;
case 'T':
case 't':
val = atoi(optarg);
if (val <= 0 || val > max) {
fprintf(stderr, "Invalid numeric value for -%c.\n", c);
return 1;
}
if (c == 'p') {
args.port = val;
} else if (c == 't') {
args.rx_timeout = val;
} else {
args.ul_timeout = val;
}
break;
case 'h':
usage(stdout);
return 0;
default:
usage(stderr);
return 1;
}
}
if (!args.filename || !args.intf || !args.ipaddr) {
usage(stderr);
return 1;
}
return nmrp_do(&args);
}