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#include <u.h>
#include <libc.h>
#include <auth.h>
#include <thread.h>
enum {
Encnone,
Encssl,
Enctls,
};
static char *encprotos[] = {
[Encnone] = "clear",
[Encssl] = "ssl",
[Enctls] = "tls",
nil,
};
char *keyspec = "";
char *filterp;
char *ealgs = "rc4_256 sha1";
int encproto = Encnone;
AuthInfo *ai;
int debug;
int doauth = 1;
int timedout;
int connectez(char*, char*);
void sysfatal(char*, ...);
void usage(void);
int filter(int, char *, char *);
int
catcher(void *v, char *msg)
{
timedout = 1;
if(strcmp(msg, "alarm") == 0)
return 1;
return 0;
}
static int
lookup(char *s, char *l[])
{
int i;
for (i = 0; l[i] != 0; i++)
if (strcmp(l[i], s) == 0)
return i;
return -1;
}
static char*
srvname(char *addr)
{
int i;
for(i=0; i<strlen(addr); i++){
if(addr[i] == '!')
addr[i] = ':';
}
return addr;
}
void
threadmain(int argc, char **argv)
{
char *mntpt, *srvpost, srvfile[64];
int fd;
quotefmtinstall();
srvpost = nil;
ARGBEGIN{
case 'A':
doauth = 0;
break;
case 'd':
debug++;
break;
case 'E':
if ((encproto = lookup(EARGF(usage()), encprotos)) < 0)
usage();
break;
case 'e':
ealgs = EARGF(usage());
if(*ealgs == 0 || strcmp(ealgs, "clear") == 0)
ealgs = nil;
break;
case 'k':
keyspec = EARGF(usage());
break;
case 'p':
filterp = unsharp("#9/bin/aan");
break;
case 's':
srvpost = EARGF(usage());
break;
default:
usage();
}ARGEND;
mntpt = 0; /* to shut up compiler */
switch(argc) {
case 2:
mntpt = argv[1];
break;
case 3:
mntpt = argv[2];
break;
default:
usage();
}
if(encproto != Encnone)
sysfatal("%s: tls and ssl have not yet been implemented", argv[0]);
threadnotify(catcher, 1);
alarm(60*1000);
fd = connectez(argv[0], argv[1]);
fprint(fd, "impo %s %s\n", filterp? "aan": "nofilter",
encprotos[encproto]);
if (filterp)
fd = filter(fd, filterp, argv[0]);
if(srvpost == nil)
srvpost = srvname(argv[0]);
sprint(srvfile, "%s", srvpost);
if(post9pservice(fd, srvfile, mntpt) < 0)
sysfatal("can't post %s: %r", argv[1]);
alarm(0);
threadexitsall(0);
}
/* the name "connect" is special */
int
connectez(char *system, char *tree)
{
char buf[ERRMAX], *na;
int fd, n;
char *authp;
na = netmkaddr(system, "tcp", "exportfs");
threadsetname("dial %s", na);
if((fd = dial(na, nil, nil, nil)) < 0)
sysfatal("can't dial %s: %r", system);
if(doauth){
authp = "p9any";
threadsetname("auth_proxy auth_getkey proto=%q role=client %s",
authp, keyspec);
ai = auth_proxy(fd, auth_getkey, "proto=%q role=client %s",
authp, keyspec);
if(ai == nil)
sysfatal("%r: %s", system);
}
threadsetname("writing tree name %s", tree);
n = write(fd, tree, strlen(tree));
if(n < 0)
sysfatal("can't write tree: %r");
strcpy(buf, "can't read tree");
threadsetname("awaiting OK for %s", tree);
n = read(fd, buf, sizeof buf - 1);
if(n!=2 || buf[0]!='O' || buf[1]!='K'){
if (timedout)
sysfatal("timed out connecting to %s", na);
buf[sizeof buf - 1] = '\0';
sysfatal("bad remote tree: %s", buf);
}
return fd;
}
void
usage(void)
{
fprint(2, "usage: 9import [-A] [-E clear|ssl|tls] "
"[-e 'crypt auth'|clear] [-k keypattern] [-p] [-s srv] host remotefs [mountpoint]\n");
threadexitsall("usage");
}
/* Network on fd1, mount driver on fd0 */
int
filter(int fd, char *cmd, char *host)
{
int p[2], len, argc;
char newport[256], buf[256], *s;
char *argv[16], *file, *pbuf;
if ((len = read(fd, newport, sizeof newport - 1)) < 0)
sysfatal("filter: cannot write port; %r");
newport[len] = '\0';
if ((s = strchr(newport, '!')) == nil)
sysfatal("filter: illegally formatted port %s", newport);
strecpy(buf, buf+sizeof buf, netmkaddr(host, "tcp", "0"));
pbuf = strrchr(buf, '!');
strecpy(pbuf, buf+sizeof buf, s);
if(debug)
fprint(2, "filter: remote port %s\n", newport);
argc = tokenize(cmd, argv, nelem(argv)-2);
if (argc == 0)
sysfatal("filter: empty command");
argv[argc++] = "-c";
argv[argc++] = buf;
argv[argc] = nil;
file = argv[0];
if (s = strrchr(argv[0], '/'))
argv[0] = s+1;
if(pipe(p) < 0)
sysfatal("pipe: %r");
switch(rfork(RFNOWAIT|RFPROC|RFFDG)) {
case -1:
sysfatal("rfork record module: %r");
case 0:
dup(p[0], 1);
dup(p[0], 0);
close(p[0]);
close(p[1]);
exec(file, argv);
sysfatal("exec record module: %r");
default:
close(fd);
close(p[0]);
}
return p[1];
}
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