ip/sol: kvm (vnc) redirect, bring back plain authentication as a fallback (when unsupported)
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cinap_lenrek
parent
8597051d64
commit
1a4e03cf93
2 changed files with 124 additions and 32 deletions
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@ -4,7 +4,7 @@ sol - Intel AMT serial-over-lan console
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.SH SYNOPSIS
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.B ip/sol
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[
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.B -rR
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.B -TRrk
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] [
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.B -u
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.I user
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@ -15,12 +15,10 @@ This program provides remote access to the
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serial-over-lan interface of intel AMT
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enabled machines.
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.PP
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The protocol runs over tcp port 16995 and
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and is protected using TLS.
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The protocol runs over tcp ports 16994/16995 and
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and is optinally protected using TLS.
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.PP
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For authentication, a
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.B proto=httpdigest
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key with a username and password is required.
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For authentication, a username and password is required.
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The default username, unless
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given by the
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.B -u
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@ -30,6 +28,10 @@ The password will be prompted and kept in
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factotum.
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.PP
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The
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.B -T
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flag disables TLS encryption (enabled by default).
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.PP
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The
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.B -r
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and
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.B -R
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@ -39,9 +41,20 @@ standard input and output.
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By default, raw mode is enabled when the
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.B $TERM
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environment variable has been set.
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.PP
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The
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.B -k
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flag connects to the VNC port instead.
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.SH EXAMPLE
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Connect to the KVM port with
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.IR vnc(1):
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.IP
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.EX
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execnet && vnc 'exec!ip/sol -k host'
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.EE
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.SH SOURCE
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.B /sys/src/cmd/ip/sol.c
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.SH "SEE ALSO"
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.IR ssh (1),
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.IR consolefs (4),
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.IR execnet (4),
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.IR vncv (1),
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.IR factotum (4)
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@ -15,7 +15,10 @@ enum {
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HEATBEAT_INTERVAL = 5000,
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};
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int authok = 0, pid = 0, raw = -1, fd = -1;
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char *user = "admin";
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int authok = 0, pid = 0, raw = -1, kvm = 0, fd = -1, tls = 1;
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int reply, ok, n;
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char buf[MAX_TRANSMIT_BUFFER];
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Biobuf bin, bout;
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jmp_buf reconnect;
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@ -123,12 +126,11 @@ send(char *fmt, ...)
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}
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}
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void
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int
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digestauth(char *server, char *user, char *method, char *url)
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{
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char realm[256+1], nonce[256+1], qop[256+1], nc[10], cnonce[32+1], chal[1024], resp[1024], ouser[256];
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static uint counter;
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int reply, ok, n;
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send("lblb[__b[____", 0x13, 4,
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1+strlen(user) + 2 + 1+strlen(url) + 4,
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@ -136,7 +138,7 @@ digestauth(char *server, char *user, char *method, char *url)
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strlen(url), url, strlen(url));
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recv("lbl", &reply, &ok, &n);
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if(reply != 0x114 || ok != 4 || n == 0)
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sysfatal("bad auth reply: %x %x", reply, ok);
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return -1; /* not supported */
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recv("b", &n);
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recv("[", realm, n);
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@ -173,24 +175,52 @@ digestauth(char *server, char *user, char *method, char *url)
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strlen(qop), qop, strlen(qop));
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recv("lb*", &reply, &ok);
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if(reply != 0x14 && ok != 4)
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sysfatal("bad auth reply: %x %x", reply, ok);
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sysfatal("bad digest auth reply: %x %x", reply, ok);
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return 0;
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}
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void
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plainauth(char *user, char *pass)
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{
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send("lblb[b[", 0x13, 1,
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strlen(user)+1+strlen(pass)+1,
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strlen(user), user, strlen(user),
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strlen(pass), pass, strlen(pass));
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recv("lb*", &reply, &ok);
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if(reply != 0x14 || ok != 1)
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sysfatal("bad password auth reply: %x %x", reply, ok);
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}
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void
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auth(char *server, char *user)
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{
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static UserPasswd *up = nil;
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if(up == nil){
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if(digestauth(server, user, "POST", "/RedirectionService") == 0)
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return;
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/* if digest auth not supported, get plaintext password */
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up = auth_getuserpasswd(auth_getkey,
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"proto=pass service=sol user=%q server=%q",
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user, server);
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if(up == nil)
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sysfatal("auth_getuserpasswd: %r");
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longjmp(reconnect, 1);
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}
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plainauth(up->user, up->passwd);
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}
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void
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usage(void)
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{
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fprint(2, "usage: %s [-Rr] [-u user] host\n", argv0);
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fprint(2, "usage: %s [-TRrk] [-u user] host\n", argv0);
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exits("usage");
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}
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void
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main(int argc, char *argv[])
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{
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uchar buf[MAX_TRANSMIT_BUFFER];
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TLSconn tls;
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char *user = "admin";
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int reply, ok, n;
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fmtinstall('[', encodefmt);
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fmtinstall('H', encodefmt);
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@ -198,12 +228,18 @@ main(int argc, char *argv[])
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case 'u':
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user = EARGF(usage());
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break;
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case 'T':
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tls = 0;
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break;
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case 'R':
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raw = 0;
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break;
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case 'r':
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raw = 1;
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break;
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case 'k':
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kvm = 1;
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break;
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default:
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usage();
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} ARGEND;
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@ -211,6 +247,9 @@ main(int argc, char *argv[])
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if(argc != 1)
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usage();
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if(kvm)
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goto Connect;
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if(raw < 0) {
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char *term = getenv("TERM");
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raw = term && *term;
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@ -230,18 +269,22 @@ main(int argc, char *argv[])
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write(fd, "rawon", 5);
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}
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Reconnect:
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fd = dial(netmkaddr(argv[0], "tcp", "16995"), nil, nil, nil);
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Connect:
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fd = dial(netmkaddr(argv[0], "tcp", tls ? "16995" : "16994"), nil, nil, nil);
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if(fd < 0)
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sysfatal("dial: %r");
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memset(&tls, 0, sizeof(tls));
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fd = tlsClient(fd, &tls);
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if(tls){
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TLSconn conn;
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memset(&conn, 0, sizeof(conn));
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fd = tlsClient(fd, &conn);
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if(fd < 0)
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sysfatal("tls client: %r");
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free(tls.cert);
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free(tls.sessionID);
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memset(&tls, 0, sizeof(tls));
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sysfatal("tls: %r");
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free(conn.cert);
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free(conn.sessionID);
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memset(&conn, 0, sizeof(conn));
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}
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authok = 0;
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Binit(&bin, fd, OREAD);
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@ -250,17 +293,52 @@ Reconnect:
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Bterm(&bin);
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Bterm(&bout);
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close(fd);
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goto Reconnect;
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goto Connect;
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}
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if(kvm)
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send("l[", 0x110, "KVMR", 4);
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else
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send("l[", 0x10, "SOL ", 4);
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recv("lb*", &reply, &ok);
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if(reply != 0x11 || ok != 1)
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sysfatal("bad session reply: %x %x", reply, ok);
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digestauth(argv[0], user, "POST", "/RedirectionService");
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auth(argv[0], user);
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authok = 1;
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/* kvm port redirect */
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if(kvm){
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int from, to;
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send("b_______", 0x40);
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if(read(fd, buf, 8) != 8 || buf[0] != 0x41)
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sysfatal("bad redirection reply: %x %x", reply, ok);
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pid = fork();
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if(pid == 0){
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pid = getppid();
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from = 0;
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to = fd;
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} else {
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from = fd;
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to = 1;
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}
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atexit(killpid);
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for(;;){
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n = read(from, buf, sizeof(buf));
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if(n < 0)
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sysfatal("read: %r");
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if(n == 0)
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break;
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if(write(to, buf, n) != n)
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sysfatal("write: %r");
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}
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exits(nil);
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}
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/* serial over lan */
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send("l____wwwwww____", 0x20,
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MAX_TRANSMIT_BUFFER,
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TRANSMIT_BUFFER_TIMEOUT,
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@ -270,7 +348,7 @@ Reconnect:
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HEATBEAT_INTERVAL);
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recv("lb*", &reply, &ok);
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if(reply != 0x21 || ok != 1)
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sysfatal("bad redirection reply: %x %x", reply, ok);
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sysfatal("bad sol reply: %x %x", reply, ok);
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pid = fork();
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if(pid == 0){
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@ -305,5 +383,6 @@ Reconnect:
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}
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}
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}
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exits(nil);
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}
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