mirror of
https://github.com/0intro/conterm
synced 2024-11-22 05:41:28 +03:00
668 lines
15 KiB
C
668 lines
15 KiB
C
/*
|
|
* Various files from /sys/src/cmd/auth/secstore, just enough
|
|
* to download a file at boot time.
|
|
*/
|
|
|
|
#include <u.h>
|
|
#include <libc.h>
|
|
#include <mp.h>
|
|
#include <libsec.h>
|
|
#include "drawterm.h"
|
|
|
|
static void*
|
|
emalloc(ulong n)
|
|
{
|
|
return mallocz(n, 1);
|
|
}
|
|
|
|
enum{ CHK = 16};
|
|
enum{ MAXFILESIZE = 10*1024*1024 };
|
|
|
|
enum{// PW status bits
|
|
Enabled = (1<<0),
|
|
STA = (1<<1), // extra SecurID step
|
|
};
|
|
|
|
static char testmess[] = "__secstore\tPAK\nC=%s\nm=0\n";
|
|
|
|
int
|
|
secdial(char *secstore)
|
|
{
|
|
char *p, buf[80], *f[3];
|
|
int fd, nf;
|
|
|
|
p = secstore; /* take it from writehostowner, if set there */
|
|
if(*p == 0) /* else use the authserver */
|
|
p = "$auth";
|
|
|
|
/* translate $auth ourselves.
|
|
* authaddr is something like il!host!566 or tcp!host!567.
|
|
* extract host, accounting for a change of format to something
|
|
* like il!host or tcp!host or host.
|
|
*/
|
|
if(strcmp(p, "$auth")==0){
|
|
if(authserver == nil)
|
|
return -1;
|
|
strecpy(buf, buf+sizeof buf, authserver);
|
|
nf = getfields(buf, f, nelem(f), 0, "!");
|
|
switch(nf){
|
|
default:
|
|
return -1;
|
|
case 1:
|
|
p = f[0];
|
|
break;
|
|
case 2:
|
|
case 3:
|
|
p = f[1];
|
|
break;
|
|
}
|
|
}
|
|
fd = dial(netmkaddr(p, "tcp", "5356"), 0, 0, 0);
|
|
if(fd >= 0)
|
|
return fd;
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
havesecstore(char *addr, char *owner)
|
|
{
|
|
int m, n, fd;
|
|
uchar buf[500];
|
|
|
|
n = snprint((char*)buf, sizeof buf, testmess, owner);
|
|
hnputs(buf, 0x8000+n-2);
|
|
|
|
fd = secdial(addr);
|
|
if(fd < 0)
|
|
return 0;
|
|
if(write(fd, buf, n) != n || readn(fd, buf, 2) != 2){
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
n = ((buf[0]&0x7f)<<8) + buf[1];
|
|
if(n+1 > sizeof buf){
|
|
werrstr("implausibly large count %d", n);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
m = readn(fd, buf, n);
|
|
close(fd);
|
|
if(m != n){
|
|
if(m >= 0)
|
|
werrstr("short read from secstore");
|
|
return 0;
|
|
}
|
|
buf[n] = 0;
|
|
if(strcmp((char*)buf, "!account expired") == 0){
|
|
werrstr("account expired");
|
|
return 0;
|
|
}
|
|
return strcmp((char*)buf, "!account exists") == 0;
|
|
}
|
|
|
|
// delimited, authenticated, encrypted connection
|
|
enum{ Maxmsg=4096 }; // messages > Maxmsg bytes are truncated
|
|
typedef struct SConn SConn;
|
|
|
|
extern SConn* newSConn(int); // arg is open file descriptor
|
|
struct SConn{
|
|
void *chan;
|
|
int secretlen;
|
|
int (*secret)(SConn*, uchar*, int);//
|
|
int (*read)(SConn*, uchar*, int); // <0 if error; errmess in buffer
|
|
int (*write)(SConn*, uchar*, int);
|
|
void (*free)(SConn*); // also closes file descriptor
|
|
};
|
|
// secret(s,b,dir) sets secret for digest, encrypt, using the secretlen
|
|
// bytes in b to form keys for the two directions;
|
|
// set dir=0 in client, dir=1 in server
|
|
|
|
// error convention: write !message in-band
|
|
#define readstr secstore_readstr
|
|
static void writerr(SConn*, char*);
|
|
static int readstr(SConn*, char*); // call with buf of size Maxmsg+1
|
|
// returns -1 upon error, with error message in buf
|
|
|
|
typedef struct ConnState {
|
|
uchar secret[SHA1dlen];
|
|
ulong seqno;
|
|
RC4state rc4;
|
|
} ConnState;
|
|
|
|
typedef struct SS{
|
|
int fd; // file descriptor for read/write of encrypted data
|
|
int alg; // if nonzero, "alg sha rc4_128"
|
|
ConnState in, out;
|
|
} SS;
|
|
|
|
static int
|
|
SC_secret(SConn *conn, uchar *sigma, int direction)
|
|
{
|
|
SS *ss = (SS*)(conn->chan);
|
|
int nsigma = conn->secretlen;
|
|
|
|
if(direction != 0){
|
|
hmac_sha1(sigma, nsigma, (uchar*)"one", 3, ss->out.secret, nil);
|
|
hmac_sha1(sigma, nsigma, (uchar*)"two", 3, ss->in.secret, nil);
|
|
}else{
|
|
hmac_sha1(sigma, nsigma, (uchar*)"two", 3, ss->out.secret, nil);
|
|
hmac_sha1(sigma, nsigma, (uchar*)"one", 3, ss->in.secret, nil);
|
|
}
|
|
setupRC4state(&ss->in.rc4, ss->in.secret, 16); // restrict to 128 bits
|
|
setupRC4state(&ss->out.rc4, ss->out.secret, 16);
|
|
ss->alg = 1;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
hash(uchar secret[SHA1dlen], uchar *data, int len, int seqno, uchar d[SHA1dlen])
|
|
{
|
|
DigestState sha;
|
|
uchar seq[4];
|
|
|
|
seq[0] = seqno>>24;
|
|
seq[1] = seqno>>16;
|
|
seq[2] = seqno>>8;
|
|
seq[3] = seqno;
|
|
memset(&sha, 0, sizeof sha);
|
|
sha1(secret, SHA1dlen, nil, &sha);
|
|
sha1(data, len, nil, &sha);
|
|
sha1(seq, 4, d, &sha);
|
|
}
|
|
|
|
static int
|
|
verify(uchar secret[SHA1dlen], uchar *data, int len, int seqno, uchar d[SHA1dlen])
|
|
{
|
|
DigestState sha;
|
|
uchar seq[4];
|
|
uchar digest[SHA1dlen];
|
|
|
|
seq[0] = seqno>>24;
|
|
seq[1] = seqno>>16;
|
|
seq[2] = seqno>>8;
|
|
seq[3] = seqno;
|
|
memset(&sha, 0, sizeof sha);
|
|
sha1(secret, SHA1dlen, nil, &sha);
|
|
sha1(data, len, nil, &sha);
|
|
sha1(seq, 4, digest, &sha);
|
|
return memcmp(d, digest, SHA1dlen);
|
|
}
|
|
|
|
static int
|
|
SC_read(SConn *conn, uchar *buf, int n)
|
|
{
|
|
SS *ss = (SS*)(conn->chan);
|
|
uchar count[2], digest[SHA1dlen];
|
|
int len, nr;
|
|
|
|
if(read(ss->fd, count, 2) != 2 || (count[0]&0x80) == 0){
|
|
werrstr("!SC_read invalid count");
|
|
return -1;
|
|
}
|
|
len = (count[0]&0x7f)<<8 | count[1]; // SSL-style count; no pad
|
|
if(ss->alg){
|
|
len -= SHA1dlen;
|
|
if(len <= 0 || readn(ss->fd, digest, SHA1dlen) != SHA1dlen){
|
|
werrstr("!SC_read missing sha1");
|
|
return -1;
|
|
}
|
|
if(len > n || readn(ss->fd, buf, len) != len){
|
|
werrstr("!SC_read missing data");
|
|
return -1;
|
|
}
|
|
rc4(&ss->in.rc4, digest, SHA1dlen);
|
|
rc4(&ss->in.rc4, buf, len);
|
|
if(verify(ss->in.secret, buf, len, ss->in.seqno, digest) != 0){
|
|
werrstr("!SC_read integrity check failed");
|
|
return -1;
|
|
}
|
|
}else{
|
|
if(len <= 0 || len > n){
|
|
werrstr("!SC_read implausible record length");
|
|
return -1;
|
|
}
|
|
if( (nr = readn(ss->fd, buf, len)) != len){
|
|
werrstr("!SC_read expected %d bytes, but got %d", len, nr);
|
|
return -1;
|
|
}
|
|
}
|
|
ss->in.seqno++;
|
|
return len;
|
|
}
|
|
|
|
static int
|
|
SC_write(SConn *conn, uchar *buf, int n)
|
|
{
|
|
SS *ss = (SS*)(conn->chan);
|
|
uchar count[2], digest[SHA1dlen];
|
|
int len;
|
|
|
|
if(n <= 0 || n > Maxmsg+1){
|
|
werrstr("!SC_write invalid n %d", n);
|
|
return -1;
|
|
}
|
|
len = n;
|
|
if(ss->alg)
|
|
len += SHA1dlen;
|
|
count[0] = 0x80 | len>>8;
|
|
count[1] = len;
|
|
if(write(ss->fd, count, 2) != 2){
|
|
werrstr("!SC_write invalid count");
|
|
return -1;
|
|
}
|
|
if(ss->alg){
|
|
hash(ss->out.secret, buf, n, ss->out.seqno, digest);
|
|
rc4(&ss->out.rc4, digest, SHA1dlen);
|
|
rc4(&ss->out.rc4, buf, n);
|
|
if(write(ss->fd, digest, SHA1dlen) != SHA1dlen ||
|
|
write(ss->fd, buf, n) != n){
|
|
werrstr("!SC_write error on send");
|
|
return -1;
|
|
}
|
|
}else{
|
|
if(write(ss->fd, buf, n) != n){
|
|
werrstr("!SC_write error on send");
|
|
return -1;
|
|
}
|
|
}
|
|
ss->out.seqno++;
|
|
return n;
|
|
}
|
|
|
|
static void
|
|
SC_free(SConn *conn)
|
|
{
|
|
SS *ss = (SS*)(conn->chan);
|
|
|
|
close(ss->fd);
|
|
free(ss);
|
|
free(conn);
|
|
}
|
|
|
|
SConn*
|
|
newSConn(int fd)
|
|
{
|
|
SS *ss;
|
|
SConn *conn;
|
|
|
|
if(fd < 0)
|
|
return nil;
|
|
ss = (SS*)emalloc(sizeof(*ss));
|
|
conn = (SConn*)emalloc(sizeof(*conn));
|
|
ss->fd = fd;
|
|
ss->alg = 0;
|
|
conn->chan = (void*)ss;
|
|
conn->secretlen = SHA1dlen;
|
|
conn->free = SC_free;
|
|
conn->secret = SC_secret;
|
|
conn->read = SC_read;
|
|
conn->write = SC_write;
|
|
return conn;
|
|
}
|
|
|
|
static void
|
|
writerr(SConn *conn, char *s)
|
|
{
|
|
char buf[Maxmsg];
|
|
|
|
snprint(buf, Maxmsg, "!%s", s);
|
|
conn->write(conn, (uchar*)buf, strlen(buf));
|
|
}
|
|
|
|
static int
|
|
readstr(SConn *conn, char *s)
|
|
{
|
|
int n;
|
|
|
|
n = conn->read(conn, (uchar*)s, Maxmsg);
|
|
if(n >= 0){
|
|
s[n] = 0;
|
|
if(s[0] == '!'){
|
|
memmove(s, s+1, n);
|
|
n = -1;
|
|
}
|
|
}else{
|
|
strcpy(s, "read error");
|
|
}
|
|
return n;
|
|
}
|
|
|
|
static char*
|
|
getfile(SConn *conn, uchar *key, int nkey)
|
|
{
|
|
char *buf;
|
|
int nbuf, n, nr, len;
|
|
char s[Maxmsg+1], *gf;
|
|
uchar skey[SHA1dlen], ib[Maxmsg+CHK], *ibr, *ibw;
|
|
AESstate aes;
|
|
DigestState *sha;
|
|
|
|
gf = "factotum";
|
|
memset(&aes, 0, sizeof aes);
|
|
|
|
snprint(s, Maxmsg, "GET %s\n", gf);
|
|
conn->write(conn, (uchar*)s, strlen(s));
|
|
|
|
/* get file size */
|
|
s[0] = '\0';
|
|
if(readstr(conn, s) < 0){
|
|
werrstr("secstore: %r");
|
|
return nil;
|
|
}
|
|
if((len = atoi(s)) < 0){
|
|
werrstr("secstore: remote file %s does not exist", gf);
|
|
return nil;
|
|
}else if(len > MAXFILESIZE){//assert
|
|
werrstr("secstore: implausible file size %d for %s", len, gf);
|
|
return nil;
|
|
}
|
|
|
|
ibr = ibw = ib;
|
|
buf = nil;
|
|
nbuf = 0;
|
|
for(nr=0; nr < len;){
|
|
if((n = conn->read(conn, ibw, Maxmsg)) <= 0){
|
|
werrstr("secstore: empty file chunk n=%d nr=%d len=%d: %r", n, nr, len);
|
|
return nil;
|
|
}
|
|
nr += n;
|
|
ibw += n;
|
|
if(!aes.setup){ /* first time, read 16 byte IV */
|
|
if(n < 16){
|
|
werrstr("secstore: no IV in file");
|
|
return nil;
|
|
}
|
|
sha = sha1((uchar*)"aescbc file", 11, nil, nil);
|
|
sha1(key, nkey, skey, sha);
|
|
setupAESstate(&aes, skey, AESbsize, ibr);
|
|
memset(skey, 0, sizeof skey);
|
|
ibr += AESbsize;
|
|
n -= AESbsize;
|
|
}
|
|
aesCBCdecrypt(ibw-n, n, &aes);
|
|
n = ibw-ibr-CHK;
|
|
if(n > 0){
|
|
buf = realloc(buf, nbuf+n+1);
|
|
if(buf == nil)
|
|
sysfatal("out of memory");
|
|
memmove(buf+nbuf, ibr, n);
|
|
nbuf += n;
|
|
ibr += n;
|
|
}
|
|
memmove(ib, ibr, ibw-ibr);
|
|
ibw = ib + (ibw-ibr);
|
|
ibr = ib;
|
|
}
|
|
n = ibw-ibr;
|
|
if((n != CHK) || (memcmp(ib, "XXXXXXXXXXXXXXXX", CHK) != 0)){
|
|
werrstr("secstore: decrypted file failed to authenticate!");
|
|
free(buf);
|
|
return nil;
|
|
}
|
|
if(nbuf == 0){
|
|
werrstr("secstore got empty file");
|
|
return nil;
|
|
}
|
|
buf[nbuf] = '\0';
|
|
return buf;
|
|
}
|
|
|
|
static char VERSION[] = "secstore";
|
|
|
|
typedef struct PAKparams{
|
|
mpint *q, *p, *r, *g;
|
|
} PAKparams;
|
|
|
|
static PAKparams *pak;
|
|
|
|
// This group was generated by the seed EB7B6E35F7CD37B511D96C67D6688CC4DD440E1E.
|
|
static void
|
|
initPAKparams(void)
|
|
{
|
|
if(pak)
|
|
return;
|
|
pak = (PAKparams*)emalloc(sizeof(*pak));
|
|
pak->q = strtomp("E0F0EF284E10796C5A2A511E94748BA03C795C13", nil, 16, nil);
|
|
pak->p = strtomp("C41CFBE4D4846F67A3DF7DE9921A49D3B42DC33728427AB159CEC8CBBD"
|
|
"B12B5F0C244F1A734AEB9840804EA3C25036AD1B61AFF3ABBC247CD4B384224567A86"
|
|
"3A6F020E7EE9795554BCD08ABAD7321AF27E1E92E3DB1C6E7E94FAAE590AE9C48F96D9"
|
|
"3D178E809401ABE8A534A1EC44359733475A36A70C7B425125062B1142D", nil, 16, nil);
|
|
pak->r = strtomp("DF310F4E54A5FEC5D86D3E14863921E834113E060F90052AD332B3241CEF"
|
|
"2497EFA0303D6344F7C819691A0F9C4A773815AF8EAECFB7EC1D98F039F17A32A7E887"
|
|
"D97251A927D093F44A55577F4D70444AEBD06B9B45695EC23962B175F266895C67D21"
|
|
"C4656848614D888A4", nil, 16, nil);
|
|
pak->g = strtomp("2F1C308DC46B9A44B52DF7DACCE1208CCEF72F69C743ADD4D2327173444"
|
|
"ED6E65E074694246E07F9FD4AE26E0FDDD9F54F813C40CB9BCD4338EA6F242AB94CD41"
|
|
"0E676C290368A16B1A3594877437E516C53A6EEE5493A038A017E955E218E7819734E3E"
|
|
"2A6E0BAE08B14258F8C03CC1B30E0DDADFCF7CEDF0727684D3D255F1", nil, 16, nil);
|
|
}
|
|
|
|
// H = (sha(ver,C,sha(passphrase)))^r mod p,
|
|
// a hash function expensive to attack by brute force.
|
|
static void
|
|
longhash(char *ver, char *C, uchar *passwd, mpint *H)
|
|
{
|
|
uchar *Cp;
|
|
int i, n, nver, nC;
|
|
uchar buf[140], key[1];
|
|
|
|
nver = strlen(ver);
|
|
nC = strlen(C);
|
|
n = nver + nC + SHA1dlen;
|
|
Cp = (uchar*)emalloc(n);
|
|
memmove(Cp, ver, nver);
|
|
memmove(Cp+nver, C, nC);
|
|
memmove(Cp+nver+nC, passwd, SHA1dlen);
|
|
for(i = 0; i < 7; i++){
|
|
key[0] = 'A'+i;
|
|
hmac_sha1(Cp, n, key, sizeof key, buf+i*SHA1dlen, nil);
|
|
}
|
|
memset(Cp, 0, n);
|
|
free(Cp);
|
|
betomp(buf, sizeof buf, H);
|
|
mpmod(H, pak->p, H);
|
|
mpexp(H, pak->r, pak->p, H);
|
|
}
|
|
|
|
// Hi = H^-1 mod p
|
|
static char *
|
|
PAK_Hi(char *C, char *passphrase, mpint *H, mpint *Hi)
|
|
{
|
|
uchar passhash[SHA1dlen];
|
|
|
|
sha1((uchar *)passphrase, strlen(passphrase), passhash, nil);
|
|
initPAKparams();
|
|
longhash(VERSION, C, passhash, H);
|
|
mpinvert(H, pak->p, Hi);
|
|
return mptoa(Hi, 64, nil, 0);
|
|
}
|
|
|
|
// another, faster, hash function for each party to
|
|
// confirm that the other has the right secrets.
|
|
static void
|
|
shorthash(char *mess, char *C, char *S, char *m, char *mu, char *sigma, char *Hi, uchar *digest)
|
|
{
|
|
SHA1state *state;
|
|
|
|
state = sha1((uchar*)mess, strlen(mess), 0, 0);
|
|
state = sha1((uchar*)C, strlen(C), 0, state);
|
|
state = sha1((uchar*)S, strlen(S), 0, state);
|
|
state = sha1((uchar*)m, strlen(m), 0, state);
|
|
state = sha1((uchar*)mu, strlen(mu), 0, state);
|
|
state = sha1((uchar*)sigma, strlen(sigma), 0, state);
|
|
state = sha1((uchar*)Hi, strlen(Hi), 0, state);
|
|
state = sha1((uchar*)mess, strlen(mess), 0, state);
|
|
state = sha1((uchar*)C, strlen(C), 0, state);
|
|
state = sha1((uchar*)S, strlen(S), 0, state);
|
|
state = sha1((uchar*)m, strlen(m), 0, state);
|
|
state = sha1((uchar*)mu, strlen(mu), 0, state);
|
|
state = sha1((uchar*)sigma, strlen(sigma), 0, state);
|
|
sha1((uchar*)Hi, strlen(Hi), digest, state);
|
|
}
|
|
|
|
// On input, conn provides an open channel to the server;
|
|
// C is the name this client calls itself;
|
|
// pass is the user's passphrase
|
|
// On output, session secret has been set in conn
|
|
// (unless return code is negative, which means failure).
|
|
// If pS is not nil, it is set to the (alloc'd) name the server calls itself.
|
|
static int
|
|
PAKclient(SConn *conn, char *C, char *pass, char **pS)
|
|
{
|
|
char *mess, *mess2, *eol, *S, *hexmu, *ks, *hexm, *hexsigma = nil, *hexHi;
|
|
char kc[2*SHA1dlen+1];
|
|
uchar digest[SHA1dlen];
|
|
int rc = -1, n;
|
|
mpint *x, *m = mpnew(0), *mu = mpnew(0), *sigma = mpnew(0);
|
|
mpint *H = mpnew(0), *Hi = mpnew(0);
|
|
|
|
hexHi = PAK_Hi(C, pass, H, Hi);
|
|
|
|
// random 1<=x<=q-1; send C, m=g**x H
|
|
x = mprand(164, genrandom, nil);
|
|
mpmod(x, pak->q, x);
|
|
if(mpcmp(x, mpzero) == 0)
|
|
mpassign(mpone, x);
|
|
mpexp(pak->g, x, pak->p, m);
|
|
mpmul(m, H, m);
|
|
mpmod(m, pak->p, m);
|
|
hexm = mptoa(m, 64, nil, 0);
|
|
mess = (char*)emalloc(2*Maxmsg+2);
|
|
mess2 = mess+Maxmsg+1;
|
|
snprint(mess, Maxmsg, "%s\tPAK\nC=%s\nm=%s\n", VERSION, C, hexm);
|
|
conn->write(conn, (uchar*)mess, strlen(mess));
|
|
|
|
// recv g**y, S, check hash1(g**xy)
|
|
if(readstr(conn, mess) < 0){
|
|
fprint(2, "error: %s\n", mess);
|
|
writerr(conn, "couldn't read g**y");
|
|
goto done;
|
|
}
|
|
eol = strchr(mess, '\n');
|
|
if(strncmp("mu=", mess, 3) != 0 || !eol || strncmp("\nk=", eol, 3) != 0){
|
|
writerr(conn, "verifier syntax error");
|
|
goto done;
|
|
}
|
|
hexmu = mess+3;
|
|
*eol = 0;
|
|
ks = eol+3;
|
|
eol = strchr(ks, '\n');
|
|
if(!eol || strncmp("\nS=", eol, 3) != 0){
|
|
writerr(conn, "verifier syntax error for secstore 1.0");
|
|
goto done;
|
|
}
|
|
*eol = 0;
|
|
S = eol+3;
|
|
eol = strchr(S, '\n');
|
|
if(!eol){
|
|
writerr(conn, "verifier syntax error for secstore 1.0");
|
|
goto done;
|
|
}
|
|
*eol = 0;
|
|
if(pS)
|
|
*pS = strdup(S);
|
|
strtomp(hexmu, nil, 64, mu);
|
|
mpexp(mu, x, pak->p, sigma);
|
|
hexsigma = mptoa(sigma, 64, nil, 0);
|
|
shorthash("server", C, S, hexm, hexmu, hexsigma, hexHi, digest);
|
|
enc64(kc, sizeof kc, digest, SHA1dlen);
|
|
if(strcmp(ks, kc) != 0){
|
|
writerr(conn, "verifier didn't match");
|
|
goto done;
|
|
}
|
|
|
|
// send hash2(g**xy)
|
|
shorthash("client", C, S, hexm, hexmu, hexsigma, hexHi, digest);
|
|
enc64(kc, sizeof kc, digest, SHA1dlen);
|
|
snprint(mess2, Maxmsg, "k'=%s\n", kc);
|
|
conn->write(conn, (uchar*)mess2, strlen(mess2));
|
|
|
|
// set session key
|
|
shorthash("session", C, S, hexm, hexmu, hexsigma, hexHi, digest);
|
|
memset(hexsigma, 0, strlen(hexsigma));
|
|
n = conn->secret(conn, digest, 0);
|
|
memset(digest, 0, SHA1dlen);
|
|
if(n < 0){//assert
|
|
writerr(conn, "can't set secret");
|
|
goto done;
|
|
}
|
|
|
|
rc = 0;
|
|
done:
|
|
mpfree(x);
|
|
mpfree(sigma);
|
|
mpfree(mu);
|
|
mpfree(m);
|
|
mpfree(Hi);
|
|
mpfree(H);
|
|
free(hexsigma);
|
|
free(hexHi);
|
|
free(hexm);
|
|
free(mess);
|
|
return rc;
|
|
}
|
|
|
|
char*
|
|
secstorefetch(char *addr, char *owner, char *password)
|
|
{
|
|
int fd;
|
|
char *rv;
|
|
char s[Maxmsg+1], bye[10];
|
|
SConn *conn;
|
|
char *pass, *sta;
|
|
|
|
sta = nil;
|
|
conn = nil;
|
|
rv = nil;
|
|
if(password != nil && *password)
|
|
pass = strdup(password);
|
|
else
|
|
pass = readcons("secstore password", nil, 1);
|
|
if(pass==nil || strlen(pass)==0){
|
|
werrstr("cancel");
|
|
goto Out;
|
|
}
|
|
if((fd = secdial(addr)) < 0)
|
|
goto Out;
|
|
if((conn = newSConn(fd)) == nil)
|
|
goto Out;
|
|
if(PAKclient(conn, owner, pass, nil) < 0){
|
|
werrstr("password mistyped?");
|
|
goto Out;
|
|
}
|
|
if(readstr(conn, s) < 0)
|
|
goto Out;
|
|
if(strcmp(s, "STA") == 0){
|
|
sta = readcons("STA PIN+SecureID", nil, 1);
|
|
if(sta==nil || strlen(sta)==0){
|
|
werrstr("cancel");
|
|
goto Out;
|
|
}
|
|
if(strlen(sta) >= sizeof s - 3){
|
|
werrstr("STA response too long");
|
|
goto Out;
|
|
}
|
|
strcpy(s+3, sta);
|
|
conn->write(conn, (uchar*)s, strlen(s));
|
|
readstr(conn, s);
|
|
}
|
|
if(strcmp(s, "OK") !=0){
|
|
werrstr("%s", s);
|
|
goto Out;
|
|
}
|
|
if((rv = getfile(conn, (uchar*)pass, strlen(pass))) == nil)
|
|
goto Out;
|
|
strcpy(bye, "BYE");
|
|
conn->write(conn, (uchar*)bye, 3);
|
|
|
|
Out:
|
|
if(conn)
|
|
conn->free(conn);
|
|
if(pass)
|
|
free(pass);
|
|
if(sta)
|
|
free(sta);
|
|
return rv;
|
|
}
|
|
|