Updated commandline args: Added -V for version, -h for help, changed -d to -v for...

[ltp2tcp] / ltp2tcp.c

diff --git a/ltp2tcp.c b/ltp2tcp.c
index e0a63f08cb127259f8a96117b296fce5b2219443..db8e08866e89badc097cea5f0b3f3286db155c1c 100644 (file)
--- a/ltp2tcp.c
+++ b/ltp2tcp.c
@@ -28,7 +28,8 @@ Notes:
 ******************************************************************************/
 #include "ltp2tcp.h"
 
-
+#define LTPTRACE_VERSION 0.3
+#define COPYRIGHT_YEAR 2013
 
 int debug=0;
 int MAX_SESSION=500000;
@@ -45,6 +46,8 @@ int handle_report(const u_char* odata, struct ltp_hdr_d* ltph, struct tcphdr *tc
 int claim2sack(const u_char* odata, int ses_id, struct ltp_hdr_d* ltph, struct tcphdr *tcph, u_char* tcpopt, int* dlen, int rbuf);
 int seq_from_session(struct ltp_hdr_d* ltph, struct tcphdr *tcph);
 int ack_from_session(struct ltp_hdr_d* ltph, struct tcphdr *tcph);
+void version();
+void usage();
 
 
 /*Parse commandline options and open files*/
@@ -59,28 +62,33 @@ int main(int argc, char *argv[])
        int  tmp;
 
        /*parse commandline options*/
-       if(argc<4 || argc > 8){
-               printf("Usage: ltp2tcp -t{encapsulation} ltp_file tcp_file [-d] [-b{block_size}]\n");
-               exit(1);
+       if(argc < 2){
+               usage();
        }
 
        /*loop through commandline options*/
        for(int i=1; i < argc; i++){
-               if(argv[i][0]!='-'){
-                       if(lfile==NULL){ /*assign first non-dash argument to the ltp file*/
+               if(argv[i][0]!='-' || (argv[i][0]=='-' && strlen(argv[i])==1)){
+                       if(lfile==NULL  || argv[i][0]=='-'){
+                               /*assign first non-dash (or only dash) argument to the dccp file*/
                                lfile=argv[i];
                        }else{
                                if(tfile==NULL){
                                        tfile=argv[i]; /*assign second non-dash argument to the dccp file*/
                                }else{
-                                       printf("Usage: ltp2tcp -t{encapsulation} ltp_file tcp_file [-d] [-b{block_size}]\n");
-                                       exit(1);
+                                       usage();
                                }
                        }
                }else{
-                       if(argv[i][1]=='d' && strlen(argv[i])==2){ /*debug option*/
+                       if(argv[i][1]=='v' && strlen(argv[i])==2){ /*debug option*/
                                debug++;
                        }
+                       if(argv[i][1]=='V' && strlen(argv[i])==2){ /*Version option*/
+                               version();
+                       }
+                       if(argv[i][1]=='h'&& strlen(argv[i])==2){ /* help*/
+                               usage();
+                       }
                        if(argv[i][1]=='t'){ /*Encapsulation option*/
                                type=&argv[i][2];
                        }
@@ -89,8 +97,7 @@ int main(int argc, char *argv[])
                                if(tmp>0){
                                        MAX_SESSION=tmp;
                                }else{
-                                       printf("Usage: ltp2tcp -t{encapsulation} ltp_file tcp_file [-d] [-b{block_size}]\n");
-                                       exit(1);
+                                       usage();
                                }
                        }
                        if(argv[i][1]=='s'){ /*Session range option*/
@@ -102,8 +109,7 @@ int main(int argc, char *argv[])
        }
        
        if(lfile==NULL || tfile==NULL || type==NULL){
-               printf("Usage: ltp2tcp -t{encapsulation} ltp_file tcp_file [-d] [-b{block_size}]\n");
-               exit(1);
+               usage();
        }
 
        if(state.ses_min<=0 || state.ses_max<=0){
@@ -114,7 +120,6 @@ int main(int argc, char *argv[])
        /*all options validated*/
 
        if(debug){
-               dbgprintf(1,"Debug On\n");
                dbgprintf(1,"Input file: %s\n", lfile);
                dbgprintf(1,"Output file: %s\n", tfile);
                dbgprintf(1,"Encapsulation: %s\n", type);
@@ -895,6 +900,29 @@ int ack_from_session(struct ltp_hdr_d* ltph, struct tcphdr *tcph)
 return 0;
 }
 
+void version()
+{
+       dbgprintf(0, "ltp2tcp version %.1f\n",LTPTRACE_VERSION);
+       dbgprintf(0, "Copyright (C) %i Samuel Jero <sj323707@ohio.edu>\n",COPYRIGHT_YEAR);
+       dbgprintf(0, "This program comes with ABSOLUTELY NO WARRANTY.\n");
+       dbgprintf(0, "This is free software, and you are welcome to\n");
+       dbgprintf(0, "redistribute it under certain conditions.\n");
+       exit(0);
+}
+
+/*Usage information for program*/
+void usage()
+{
+       dbgprintf(0,"Usage: ltp2tcp -t{encapsulation} [-v] [-V] [-h] [-b{block_size}] [-s{start session}-{end session}] ltp_file tcp_file\n");
+       dbgprintf(0, "          -v   verbose. May be repeated for additional verbosity.\n");
+       dbgprintf(0, "          -V   Version information\n");
+       dbgprintf(0, "          -h   Help\n");
+       dbgprintf(0, "          -t   type of encapsulation (udp,dccp,sll)\n");
+       dbgprintf(0, "          -b   LTP block size (NOT the bundle size) that is being used over this connection\n");
+       dbgprintf(0, "          -s   Requests a graph of only the specified range of sessions\n");
+       exit(0);
+}
+
 /*Debug Printf*/
 void dbgprintf(int level, const char *fmt, ...)
 {