int
command( int fd, SNET *pushersn )
{
SNET *snet;
int ac, i, zero = 0;
char **av, *line;
struct timeval tv;
extern int errno;
double rate;
struct protoent *proto;
if (( proto = getprotobyname( "tcp" )) != NULL ) {
if ( setsockopt( fd, proto->p_proto, TCP_NODELAY,
&zero, sizeof( zero )) < 0 ) {
syslog( LOG_ERR, "setsockopt TCP_NODELAY: %m" );
}
}
if (( snet = snet_attach( fd, 1024 * 1024 )) == NULL ) {
syslog( LOG_ERR, "snet_attach: %m" );
exit( 1 );
}
/* for debugging, TLS not required but still available. we
* need to do the authlist look up here b/c it normally happens
* in the starttls code which we may not even call. All the
* f_cmds require an "al".
*/
if ( tlsopt ) {
commands = auth_commands;
ncommands = sizeof( auth_commands ) / sizeof( auth_commands[ 0 ] );
if (( al = authlist_find( "NOTLS" )) == NULL ) {
syslog( LOG_ERR, "No debugging access" );
snet_writef( snet, "%d No NOTLS access\r\n", 508 );
exit( 1 );
}
}
/*
* because of problems with legacy client protocol checks, we return a
* list of capabilities on the same line as the banner. a multi-line
* banner would be more in the SMTP-like vernacular, but the IIS & Java
* legacy clients don't handle multi-line banner output gracefully.
*
* 220 2 Collaborative Web Single Sign-On [ CAPA1 CAPA2 ... ]\r\n
*/
banner( snet );
tv = cosign_net_timeout;
while (( line = snet_getline( snet, &tv )) != NULL ) {
/* log everything we get to stdout if we're debugging */
tv = cosign_net_timeout;
if ( debug ) {
printf( "debug: %s\n", line );
}
if (( ac = argcargv( line, &av )) < 0 ) {
syslog( LOG_ERR, "argcargv: %m" );
break;
}
if ( ac == 0 ) {
snet_writef( snet, "%d Command unrecognized\r\n", 501 );
continue;
}
for ( i = 0; i < ncommands; i++ ) {
if ( strcasecmp( av[ 0 ], commands[ i ].c_name ) == 0 ) {
break;
}
}
if ( i >= ncommands ) {
snet_writef( snet, "%d Command %s unregcognized\r\n",
500, av[ 0 ] );
continue;
}
if ( (*(commands[ i ].c_func))( snet, ac, av, pushersn ) < 0 ) {
break;
}
}
if (( rate = rate_get( &checkpass )) != 0.0 ) {
syslog( LOG_NOTICE, "STATS CHECK %s: PASS %.5f / sec",
inet_ntoa( cosign_sin.sin_addr), rate );
}
if (( rate = rate_get( &checkfail )) != 0.0 ) {
syslog( LOG_NOTICE, "STATS CHECK %s: FAIL %.5f / sec",
inet_ntoa( cosign_sin.sin_addr), rate );
}
if (( rate = rate_get( &checkunknown )) != 0.0 ) {
syslog( LOG_NOTICE, "STATS CHECK %s: UNKNOWN %.5f / sec",
inet_ntoa( cosign_sin.sin_addr), rate );
}
if ( line != NULL ) {
snet_writef( snet,
"491 Service not available, closing transmission channel\r\n" );
} else {
if ( snet_eof( snet )) {
exit( 0 );
} else if ( errno == ETIMEDOUT ) {
exit( 0 );
} else {
syslog( LOG_ERR, "snet_getline: %m" );
}
}
exit( 1 );
}
int
f_stor( SNET *sn, int ac, char *av[] )
{
char *sizebuf;
char xscriptdir[ MAXPATHLEN ];
char upload[ MAXPATHLEN ];
char buf[ 8192 ];
char *line;
char *d_tran, *d_path;
int fd;
int zero = 0;
off_t len;
ssize_t rc;
struct timeval tv;
struct protoent *proto;
if ( !prevstor ) {
/* Turn off TCP_NODELAY for stores */
if (( proto = getprotobyname( "tcp" )) == NULL ) {
syslog( LOG_ERR, "f_stor: getprotobyname: %m" );
return( -1 );
}
if ( setsockopt( snet_fd( sn ), proto->p_proto, TCP_NODELAY, &zero,
sizeof( zero )) != 0 ) {
syslog( LOG_ERR, "f_stor: snet_setopt: %m" );
return( -1 );
}
prevstor = 1;
}
if ( checkuser && ( !authorized )) {
snet_writef( sn, "%d Not logged in\r\n", 551 );
exit( 1 );
}
/* decode() uses static mem, so strdup() */
if (( d_tran = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_stor: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
if (( d_tran = strdup( d_tran )) == NULL ) {
syslog( LOG_ERR, "f_stor: strdup: %s: %m", d_tran );
return( -1 );
}
switch ( keyword( ac, av )) {
case K_TRANSCRIPT:
if ( snprintf( xscriptdir, MAXPATHLEN, "tmp/file/%s", d_tran )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: xscriptdir path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
if ( snprintf( upload, MAXPATHLEN, "tmp/transcript/%s", d_tran )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: upload path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
/* keep encoded transcript name, since it will just be
* used later to compare in a stor file.
*/
if ( strlen( av[ 2 ] ) >= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: upload_xscript path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
strcpy( upload_xscript, av[ 2 ] );
/* make the directory for the files of this xscript to live in. */
if ( mkdir( xscriptdir, 0777 ) < 0 ) {
if ( errno == EEXIST ) {
snet_writef( sn, "%d Transcript exists\r\n", 551 );
exit( 1 );
}
snet_writef( sn, "%d %s: %s\r\n",
551, xscriptdir, strerror( errno ));
exit( 1 );
}
break;
case K_FILE:
/* client must have provided a transcript name before giving
* files in that transcript
*/
if (( strcmp( upload_xscript, av[ 2 ] ) != 0 )) {
snet_writef( sn, "%d Incorrect Transcript %s\r\n", 552, av[ 2 ] );
exit( 1 );
}
/* decode() uses static mem, so strdup() */
if (( d_path = decode( av[ 3 ] )) == NULL ) {
syslog( LOG_ERR, "f_stor: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
if (( d_path = strdup( d_path )) == NULL ) {
syslog( LOG_ERR, "f_stor: strdup: %s: %m", d_path );
return( -1 );
}
if ( d_path[ 0 ] == '/' ) {
if ( snprintf( upload, MAXPATHLEN, "tmp/file/%s%s", d_tran,
d_path ) >= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: upload path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
} else {
if ( snprintf( upload, MAXPATHLEN, "tmp/file/%s/%s", d_tran,
d_path ) >= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: upload path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
}
free( d_path );
free( d_tran );
break;
default:
snet_writef( sn, "%d STOR Syntax error\r\n", 550 );
exit( 1 );
}
if (( fd = open( upload, O_CREAT|O_EXCL|O_WRONLY, 0666 )) < 0 ) {
if ( mkdirs( upload ) < 0 ) {
syslog( LOG_ERR, "f_stor: mkdir: %s: %m", upload );
snet_writef( sn, "%d %s: %s\r\n", 555, upload, strerror( errno ));
exit( 1 );
}
if (( fd = open( upload, O_CREAT|O_EXCL|O_WRONLY, 0666 )) < 0 ) {
syslog( LOG_ERR, "f_stor: open: %s: %m", upload );
snet_writef( sn, "%d %s: %s\r\n", 555, upload, strerror( errno ));
exit( 1 );
}
}
snet_writef( sn, "%d Storing file\r\n", 350 );
tv.tv_sec = 60;
tv.tv_usec = 0;
if ( ( sizebuf = snet_getline( sn, &tv ) ) == NULL ) {
syslog( LOG_ERR, "f_stor: snet_getline: %m" );
return( -1 );
}
/* Will there be a limit? */
len = strtoofft( sizebuf, NULL, 10 );
for ( ; len > 0; len -= rc ) {
tv.tv_sec = 60;
tv.tv_usec = 0;
if (( rc = snet_read(
sn, buf, MIN( len, sizeof( buf )), &tv )) <= 0 ) {
if ( snet_eof( sn )) {
syslog( LOG_ERR, "f_stor: snet_read: eof" );
} else {
syslog( LOG_ERR, "f_stor: snet_read: %m" );
}
return( -1 );
}
if ( write( fd, buf, rc ) != rc ) {
snet_writef( sn, "%d %s: %s\r\n", 555, upload, strerror( errno ));
exit( 1 );
}
}
if ( len != 0 ) {
syslog( LOG_ERR, "f_stor: len is %" PRIofft "d", len );
snet_writef( sn, "%d %s: internal error!\r\n", 555, upload );
exit( 1 );
}
if ( close( fd ) < 0 ) {
snet_writef( sn, "%d %s: %s\r\n", 555, upload, strerror( errno ));
exit( 1 );
}
syslog( LOG_DEBUG, "f_stor: file %s stored", upload );
tv.tv_sec = 60;
tv.tv_usec = 0;
if (( line = snet_getline( sn, &tv )) == NULL ) {
syslog( LOG_ERR, "f_stor: snet_getline: %m" );
return( -1 );
}
/* make sure client agrees we're at the end */
if ( strcmp( line, "." ) != 0 ) {
syslog( LOG_ERR, "f_stor: line is: %s", line );
snet_writef( sn, "%d Length doesn't match sent data %s\r\n",
555, upload );
(void)unlink( upload );
exit( 1 );
}
snet_writef( sn, "%d File stored\r\n", 250 );
return( 0 );
}
static int
netcheck_cookie( char *scookie, char **rekey, struct sinfo *si,
struct connlist *conn, void *s, cosign_host_config *cfg )
{
int i, j, ac, rc, mf, fc = cfg->reqfc;
char *p, *line, **av, **fv = cfg->reqfv;
char *rekeyed_cookie = NULL;
char *cmd = "CHECK";
struct timeval tv;
SNET *sn = conn->conn_sn;
extern int errno;
/* REKEY service-cookie */
if ( rekey != NULL && COSIGN_CONN_SUPPORTS_REKEY( conn )) {
cmd = "REKEY";
}
if ( snet_writef( sn, "%s %s\r\n", cmd, scookie ) < 0 ) {
cosign_log( APLOG_ERR, s, "mod_cosign: netcheck_cookie: "
"snet_writef %s failed", cmd );
return( COSIGN_ERROR );
}
tv = timeout;
if (( line = snet_getline_multi( sn, logger, &tv )) == NULL ) {
if ( !snet_eof( sn )) {
cosign_log( APLOG_ERR, s,
"mod_cosign: netcheck_cookie: snet_getline_multi: %s",
strerror( errno ));
}
return( COSIGN_ERROR );
}
switch( *line ) {
case '2':
if (( rate = rate_tick( &checkpass )) != 0.0 ) {
cosign_log( APLOG_NOTICE, s,
"mod_cosign: STATS CHECK %s: PASS %.5f / sec",
inet_ntoa( conn->conn_sin.sin_addr ), rate );
}
break;
case '4':
if (( rate = rate_tick( &checkfail )) != 0.0 ) {
cosign_log( APLOG_NOTICE, s,
"mod_cosign: STATS CHECK %s: FAIL %.5f / sec",
inet_ntoa( conn->conn_sin.sin_addr ), rate );
}
return( COSIGN_LOGGED_OUT );
case '5':
/* choose another connection */
if (( rate = rate_tick( &checkunknown )) != 0.0 ) {
cosign_log( APLOG_NOTICE, s,
"mod_cosign: STATS CHECK %s: UNKNOWN %.5f / sec",
inet_ntoa( conn->conn_sin.sin_addr ), rate );
}
return( COSIGN_RETRY );
default:
cosign_log( APLOG_ERR, s, "mod_cosign: netcheck_cookie: %s", line );
return( COSIGN_ERROR );
}
if (( ac = argcargv( line, &av )) < 4 ) {
cosign_log( APLOG_ERR, s,
"mod_cosign: netcheck_cookie: wrong num of args: %s", line );
return( COSIGN_ERROR );
}
if ( rekey != NULL && COSIGN_CONN_SUPPORTS_REKEY( conn )) {
/* last factor is penultimate argument */
mf = ac - 1;
} else {
/* last factor is last argument */
mf = ac;
}
/* I guess we check some sizing here :) */
if ( strlen( av[ 1 ] ) >= sizeof( si->si_ipaddr )) {
cosign_log( APLOG_ERR, s,
"mod_cosign: netcheck_cookie: IP address too long" );
return( COSIGN_ERROR );
}
strcpy( si->si_ipaddr, av[ 1 ] );
if ( strlen( av[ 2 ] ) >= sizeof( si->si_user )) {
cosign_log( APLOG_ERR, s,
"mod_cosign: netcheck_cookie: username too long" );
return( COSIGN_ERROR );
}
strcpy( si->si_user, av[ 2 ] );
si->si_protocol = conn->conn_proto;
if ( COSIGN_PROTO_SUPPORTS_FACTORS( conn->conn_proto )) {
for ( i = 0; i < fc; i++ ) {
for ( j = 3; j < mf; j++ ) {
if ( strcmp( fv[ i ], av[ j ] ) == 0 ) {
break;
}
if ( cfg->suffix != NULL ) {
if (( p = strstr( av[ j ], cfg->suffix )) != NULL ) {
if (( strlen( p )) == ( strlen( cfg->suffix ))) {
*p = '\0';
rc = strcmp( fv[ i ], av[ j ] );
*p = *cfg->suffix;
if ( rc == 0 ) {
if ( cfg->fake == 1 ) {
break;
} else {
cosign_log( APLOG_ERR, s,
"mod_cosign: netcheck: factor %s "
"matches with suffix %s, but suffix "
"matching is OFF", av[ j ],
cfg->suffix );
return( COSIGN_ERROR );
}
}
}
}
}
}
if ( j >= mf ) {
/* a required factor wasn't in the check line */
break;
}
}
if ( i < fc ) {
/* we broke out early */
cosign_log( APLOG_ERR, s,
"mod_cosign: netcheck_cookie: we broke out early" );
return( COSIGN_RETRY );
}
if ( strlen( av[ 3 ] ) + 1 > sizeof( si->si_factor )) {
cosign_log( APLOG_ERR, s,
"mod_cosign: netcheck: factor %s too long", av[ 3 ] );
return( COSIGN_ERROR );
}
strcpy( si->si_factor, av[ 3 ] );
for ( i = 4; i < mf; i++ ) {
if ( strlen( av[ i ] ) + 1 + 1 >
sizeof( si->si_factor ) - strlen( si->si_factor )) {
cosign_log( APLOG_ERR, s,
"mod_cosign: netcheck: factor %s too long", av[ i ] );
return( COSIGN_ERROR );
}
strcat( si->si_factor, " " );
strcat( si->si_factor, av[ i ] );
}
}
if ( strlen( av[ 3 ] ) >= sizeof( si->si_realm )) {
cosign_log( APLOG_ERR, s,
"mod_cosign: netcheck_cookie: realm too long" );
return( COSIGN_ERROR );
}
strcpy( si->si_realm, av[ 3 ] );
#ifdef KRB
*si->si_krb5tkt = '\0';
#endif /* KRB */
if ( rekey != NULL && COSIGN_CONN_SUPPORTS_REKEY( conn )) {
if ( strncmp( av[ ac - 1 ], "cosign-", strlen( "cosign-" )) != 0 ) {
cosign_log( APLOG_ERR, s, "mod_cosign: netcheck_cookie: "
"bad rekeyed cookie \"%s\"", av[ ac - 1 ] );
return( COSIGN_ERROR );
}
if (( rekeyed_cookie = strdup( av[ ac - 1 ] )) == NULL ) {
cosign_log( APLOG_ERR, s, "mod_cosign: netcheck_cookie: "
"strdup rekeyed cookie: %s", strerror( errno ));
return( COSIGN_ERROR );
}
*rekey = rekeyed_cookie;
}
return( COSIGN_OK );
}
