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enhance function parse_args #1

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enhance function parse_args #1

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75 changes: 51 additions & 24 deletions main.c
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
Expand All @@ -13,30 +14,49 @@ int on_demand = 0;

static int parse_args(int argc, char *argv[])
{
int i;
char *short_options = "c:dhl:q";
struct option long_options[] = {
{"connect-to-ip", required_argument, NULL, 'c'},
{"demand", no_argument, NULL, 'd'},
{"help", no_argument, NULL, 'h'},
{"listen-on-port", required_argument, NULL, 'l'},
{"quiet", no_argument, NULL, 'q'},
{NULL, 0, NULL, 0}
};
char c;
char *pos = NULL;
int t=0;
for(i=0; argv[i]; i++)
{
if(strcmp(argv[i], "-l")==0)
{
if(i+1>=argc)
while (1) {
c = getopt_long(argc, argv, short_options, long_options, NULL);
if (c == -1)
break;
switch (c) {
case 'c':
if ((pos = strchr(optarg, ':')) == NULL) {
printf("invalid: Connecting ip has no port number.\n");
exit(1);
}
*pos = '\0';
session.term[t].ip = (char *)optarg;
session.term[t].port = atoi(pos+1);
t++;
break;
case 'd':
on_demand = 1;
break;
case 'h':
return 0;
session.term[t].ip = NULL;
session.term[t].port = atoi(argv[i+1]);
t++;
}
if(strcmp(argv[i], "-c")==0)
{
if(i+2>=argc)
case 'l':
session.term[t].ip = NULL;
session.term[t].port = atoi(optarg);
t++;
break;
case 'q':
quiet = 1;
break;
default:
return 0;
session.term[t].ip = argv[i+1];
session.term[t].port = atoi(argv[i+2]);
t++;
}
if(strcmp(argv[i], "-q")==0)
quiet = 1;
if(strcmp(argv[i], "-d")==0)
on_demand = 1;
}
return t==2;
}
Expand Down Expand Up @@ -165,10 +185,17 @@ int main(int argc, char *argv[])

if(!parse_args(argc, argv))
{
printf("Usage: pf <term> <term>\n");
printf("-l [port] - Listen on port\n");
printf("-c [ip] [port] - Connect to ip\n");
printf("Example: pf -l 3389 -c 192.168.0.1 3389\n");
printf("Usage: pf <term> <term>\n\n");
printf("--listen-on-port [port]\n");
printf("-l [port]\n");
printf(" Listen on port\n\n");
printf("--connect-to-ip [ip]:[port]\n");
printf("-c [ip]:[port]\n");
printf(" Connect to ip\n\n");
printf("--quiet\n");
printf("-q\n");
printf(" Don't print messages\n\n");
printf("Example: pf -l 3389 -c 192.168.0.1:3389\n");
return 1;
}

Expand Down