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/* This is part of um-ViewOS
* The user-mode implementation of OSVIEW -- A Process with a View
*
* mstack: default stack choice
*
* Copyright 2005 Renzo Davoli University of Bologna - Italy
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* $Id: um_add_service.c 362 2007-06-08 14:31:54Z rd235 $
*
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <config.h>
#include <libgen.h>
#include <msocket.h>
#include <string.h>
#include <getopt.h>
#define AF_MAXMAX AF_MAX+2
#define MSTACK_VERBOSE 1
int flags;
char family[AF_MAXMAX];
char *fname[AF_MAXMAX]={
"PF_UNSPEC",
"PF_UNIX ",
"PF_INET",
"PF_AX25",
"PF_IPX",
"PF_APPLETALK",
"PF_NETROM",
"PF_BRIDGE",
"PF_ATMPVC",
"PF_X25",
"PF_INET",
"PF_ROSE",
"PF_DECnet",
"PF_NETBEUI",
"PF_SECURITY",
"PF_KEY",
"PF_NETLINK",
"PF_PACKET ",
"PF_ASH",
"PF_ECONET",
"PF_ATMSVC",
"PF_PROTO21",
"PF_SNA",
"PF_IRDA",
"PF_PPPOX",
"PF_WANPIPE",
"PF_PROTO26",
"PF_PROTO27",
"PF_PROTO28",
"PF_PROTO29",
"PF_PROTO30",
"PF_BLUETOOTH",
"PF_PROTO32",
"PF_PROTO33",
"PF_PROTO34"};
void usage()
{
fprintf(stderr, "Usage:\n\tmstack [-hv] [-o protocol_list] stack_mountpoint command\n"
"protocol_list may include: all, unix, ipv4, ipv6, netlink, irda or #num \n"
" protocols may be prefixed by + (add) - (delete)\n");
exit(2);
}
static uint32_t hash4(char *s) {
uint32_t result=0;
uint32_t wrap=0;
while (*s) {
wrap = result >> 24;
result <<= 8;
result |= (*s ^ wrap);
s++;
}
return result;
}
static void mstack_setproto(char *args,char *proto,int *flags)
{
char *str, *token, *saveptr;
int i,val=1;
if (args[0] != '-') {
for (i=0; i<AF_MAXMAX; i++)
proto[i]=0;
}
for (str=args;
(token=strtok_r(str, ",", &saveptr))!=NULL;str=NULL) {
if (*token=='+' || *token=='-') {
val=(*token=='+')?1:0;
token++;
}
switch (hash4(token)) {
case 0x00000000:
case 0x00616c6c: for (i=0; i<AF_MAXMAX; i++)
proto[AF_UNIX]=val;
break;
case 0x00000075:
case 0x756e6978: proto[AF_UNIX]=val; break;
case 0x00000034:
case 0x69707634: proto[AF_INET]=val; break;
case 0x00000036:
case 0x69707636: proto[AF_INET6]=val; break;
case 0x0000006e:
case 0x6c070b1f: proto[AF_NETLINK]=val; break;
case 0x00000070:
case 0x636b1515: proto[AF_PACKET]=val; break;
case 0x00000062:
case 0x031a117e: proto[AF_BLUETOOTH]=val; break;
case 0x00000069:
case 0x69726461: proto[AF_IRDA]=val; break;
case 0x00006970: proto[AF_INET]=val;
proto[AF_INET6]=val;
proto[AF_NETLINK]=val;
proto[AF_PACKET]=val;
break;
default: if (*token == '#' || *token == 'f') {
int family=atoi(token+1);
if (family > 0 && family < AF_MAXMAX)
proto[family]=val;
else
fprintf(stderr,"mstack: unknown protocol \"%s\"\n",token);
} else
fprintf(stderr,"mstack: unknown protocol \"%s\"\n",token);
break;
}
}
}
struct option long_options[] = {
{"help", 0, 0, 'h'},
{"verbose", 0, 0, 'v'},
{"options", 1, 0, 'o'},
{"protocols", 1, 0, 'o'},
{"proto", 1, 0, 'o'},
{0, 0, 0, 0}
};
int main(int argc, char *argv[])
{
int i;
argv++;
argc--;
for (i=1;i<AF_MAXMAX;i++)
family[i]=1;
while (**argv == '-') {
char *s=*argv;
s++;
if (strcmp(s,"-help") == 0 || strcmp(s,"-verbose") == 0 ||
strcmp(s,"-options") == 0 || strcmp(s,"-proto") == 0 ||
strcmp(s,"-protocols") == 0)
s[1]=0;
while (*s) {
switch (*s) {
case 'h': usage(); break;
case 'v': flags |= MSTACK_VERBOSE; break;
case 'o':
case 'p':
case 'f': argc--;
argv++;
mstack_setproto(*argv, family, &flags); break;
}
s++;
}
argv++;
argc--;
}
if (argc < 2)
usage();
else {
int fd;
char *cmd;
int all=1;
for (i=1;i<AF_MAXMAX;i++)
all *= family[i];
if (all) {
if (flags & MSTACK_VERBOSE)
fprintf(stderr, "pid %d: stack %s for all supported protocol families\n",getpid(),argv[0]);
if ((fd=msocket(argv[0],0,SOCK_DEFAULT,0)) < 0) {
perror("mstack");
exit(1);
}
} else {
for (i=1;i<AF_MAXMAX;i++)
if (family[i]) {
if (flags & MSTACK_VERBOSE)
fprintf(stderr, "pid %d: stack %s for %d=%s\n",getpid(),argv[0],i,fname[i]);
if ((fd=msocket(argv[0],i,SOCK_DEFAULT,0)) < 0) {
perror("mstack: msocket");
exit(1);
}
}
}
argv ++;
argc --;
cmd=strdup(argv[0]);
argv[0]=basename(cmd);
execvp(cmd,argv);
perror("mstack: exec");
}
return 0;
}
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