/*
* Print info about service scp to file descriptor fd
*/
void sc_dump( struct service_config *scp,
int fd,
int tab_level,
bool_int is_defaults )
{
const struct name_value *nvp ;
unsigned u ;
char **pp ;
if ( is_defaults )
tabprint( fd, tab_level, "Service defaults\n" ) ;
else
tabprint( fd, tab_level, "Service configuration: %s\n", SC_NAME(scp) ) ;
if ( ! is_defaults )
{
tabprint( fd, tab_level+1, "id = %s\n", SC_ID(scp) ) ;
if ( ! M_ARE_ALL_CLEAR( SC_XFLAGS(scp) ) )
{
tabprint( fd, tab_level+1, "flags =" ) ;
for ( nvp = &service_flags[ 0 ] ; nvp->name != NULL ; nvp++ )
if ( M_IS_SET( SC_XFLAGS(scp), nvp->value ) )
Sprint( fd, " %s", nvp->name ) ;
Sputchar( fd, '\n' ) ;
}
if ( ! M_ARE_ALL_CLEAR( SC_TYPE(scp) ) )
{
tabprint( fd, tab_level+1, "type =" ) ;
for ( nvp = &service_types[ 0 ] ; nvp->name != NULL ; nvp++ )
if ( M_IS_SET( SC_TYPE(scp), nvp->value ) )
Sprint( fd, " %s", nvp->name ) ;
Sputchar( fd, '\n' ) ;
}
tabprint( fd, tab_level+1, "socket_type = %s\n",
nv_get_name( socket_types, SC_SOCKET_TYPE(scp) ) ) ;
tabprint( fd, tab_level+1, "Protocol (name,number) = (%s,%d)\n",
SC_PROTONAME(scp), SC_PROTOVAL(scp) ) ;
if ( SC_SPECIFIED( scp, A_PORT ) )
tabprint( fd, tab_level+1, "port = %d\n", SC_PORT(scp) ) ;
}
if ( SC_SPECIFIED( scp, A_INSTANCES ) ) {
if ( SC_INSTANCES(scp) == UNLIMITED )
tabprint( fd, tab_level+1, "Instances = UNLIMITED\n" ) ;
else
tabprint( fd, tab_level+1, "Instances = %d\n", SC_INSTANCES(scp) ) ;
}
if ( SC_SPECIFIED( scp, A_WAIT ) ) {
if ( SC_WAIT(scp) )
tabprint( fd, tab_level+1, "wait = yes\n" ) ;
else
tabprint( fd, tab_level+1, "wait = no\n" ) ;
}
if ( SC_SPECIFIED( scp, A_USER ) )
tabprint( fd, tab_level+1, "user = %d\n", SC_UID(scp) ) ;
if ( SC_SPECIFIED( scp, A_GROUP ) )
tabprint( fd, tab_level+1, "group = %d\n", SC_GID(scp) ) ;
if ( SC_SPECIFIED( scp, A_GROUPS ) )
{
if (SC_GROUPS(scp) == 1)
tabprint( fd, tab_level+1, "Groups = yes\n" );
else
tabprint( fd, tab_level+1, "Groups = no\n" );
}
if ( SC_SPECIFIED( scp, A_UMASK ) )
tabprint( fd, tab_level+1, "umask = %o\n", SC_UMASK(scp) ) ;
if ( SC_SPECIFIED( scp, A_NICE ) )
tabprint( fd, tab_level+1, "Nice = %d\n", SC_NICE(scp) ) ;
if ( SC_SPECIFIED( scp, A_CPS ) )
tabprint( fd, tab_level+1, "CPS = max conn:%lu wait:%lu\n",
SC_TIME_CONN_MAX(scp), SC_TIME_WAIT(scp) );
if ( SC_SPECIFIED( scp, A_PER_SOURCE ) )
tabprint( fd, tab_level+1, "PER_SOURCE = %d\n",
SC_PER_SOURCE(scp) );
if ( SC_SPECIFIED( scp, A_BIND ) ) {
if ( SC_BIND_ADDR(scp) ) {
char bindname[NI_MAXHOST];
unsigned int len = 0;
if( SC_BIND_ADDR(scp)->sa.sa_family == AF_INET )
len = sizeof(struct sockaddr_in);
else
len = sizeof(struct sockaddr_in6);
memset(bindname, 0, sizeof(bindname));
if( getnameinfo(&SC_BIND_ADDR(scp)->sa, len, bindname,
NI_MAXHOST, NULL, 0, 0) != 0 )
strcpy(bindname, "unknown");
tabprint( fd, tab_level+1, "Bind = %s\n", bindname );
}
else if ( SC_ORIG_BIND_ADDR(scp) ) {
tabprint( fd, tab_level+1, "Bind = %s\n",
SC_ORIG_BIND_ADDR(scp) );
}
else { /* This should NEVER happen */
msg(LOG_ERR, "sc_dump", "bad configuration for %s:",
SC_NAME(scp));
}
}
else
tabprint( fd, tab_level+1, "Bind = All addresses.\n" );
if ( ! is_defaults )
{
if ( (! SC_IS_INTERNAL( scp )) && (SC_REDIR_ADDR(scp) == NULL) )
{
tabprint( fd, tab_level+1, "Server = %s\n", SC_SERVER(scp) ) ;
tabprint( fd, tab_level+1, "Server argv =" ) ;
if ( SC_SERVER_ARGV(scp) )
{
for ( pp = SC_SERVER_ARGV(scp) ; *pp ; pp++ )
Sprint( fd, " %s", *pp ) ;
}
else
Sprint( fd, " (NULL)");
Sputchar( fd, '\n' ) ;
}
#ifdef LIBWRAP
if ( SC_LIBWRAP(scp) != NULL )
{
tabprint( fd, tab_level + 1, "Libwrap = %s\n", SC_LIBWRAP(scp) );
}
#endif
if ( SC_REDIR_ADDR(scp) != NULL )
{
char redirname[NI_MAXHOST];
unsigned int len = 0;
if( SC_REDIR_ADDR(scp)->sa.sa_family == AF_INET )
len = sizeof(struct sockaddr_in);
if( SC_REDIR_ADDR(scp)->sa.sa_family == AF_INET6 )
len = sizeof(struct sockaddr_in6);
memset(redirname, 0, sizeof(redirname));
if( getnameinfo(&SC_REDIR_ADDR(scp)->sa, len, redirname, NI_MAXHOST,
NULL, 0, 0) != 0 )
strcpy(redirname, "unknown");
tabprint( fd, tab_level+1, "Redirect = %s:%d\n", redirname,
SC_REDIR_ADDR(scp)->sa_in.sin_port );
}
if ( SC_IS_RPC( scp ) )
{
struct rpc_data *rdp = SC_RPCDATA( scp ) ;
tabprint( fd, tab_level+1, "RPC data\n" ) ;
tabprint( fd, tab_level+2,
"program number = %ld\n", rdp->rd_program_number ) ;
tabprint( fd, tab_level+2, "rpc_version = " ) ;
if ( rdp->rd_min_version == rdp->rd_max_version )
Sprint( fd, "%ld\n", rdp->rd_min_version ) ;
else
Sprint( fd, "%ld-%ld\n",
rdp->rd_min_version, rdp->rd_max_version ) ;
}
if ( SC_SPECIFIED( scp, A_ACCESS_TIMES ) )
{
tabprint( fd, tab_level+1, "Access times =" ) ;
ti_dump( SC_ACCESS_TIMES(scp), fd ) ;
Sputchar ( fd, '\n' ) ;
}
}
/* This is important enough that each service should list it. */
tabprint( fd, tab_level+1, "Only from: " ) ;
if ( SC_ONLY_FROM(scp) )
{ /* Next check is done since -= doesn't zero out lists. */
if ( pset_count(SC_ONLY_FROM(scp)) == 0)
Sprint( fd, "All sites" );
else
addrlist_dump( SC_ONLY_FROM(scp), fd ) ;
}
else
Sprint( fd, "All sites" );
Sputchar( fd, '\n' ) ;
/* This is important enough that each service should list it. */
tabprint( fd, tab_level+1, "No access: " ) ;
if ( SC_NO_ACCESS(scp) )
{ /* Next check is done since -= doesn't zero out lists. */
if ( pset_count(SC_NO_ACCESS(scp)) == 0)
Sprint( fd, "No blocked sites" );
else
addrlist_dump( SC_NO_ACCESS(scp), fd ) ;
}
else
Sprint( fd, "No blocked sites" );
Sputchar( fd, '\n' ) ;
if ( SC_SENSOR(scp) )
{
tabprint( fd, tab_level+1, "Deny Time: " ) ;
Sprint( fd, "%d\n", SC_DENY_TIME(scp));
}
dump_log_data( fd, scp, tab_level+1 ) ;
if ( SC_IS_PRESENT( scp, A_PASSENV ) )
{
tabprint( fd, tab_level+1, "Passenv =" ) ;
for ( u = 0 ; u < pset_count( SC_PASS_ENV_VARS(scp) ) ; u++ )
Sprint( fd, " %s",
(char *) pset_pointer( SC_PASS_ENV_VARS(scp), u ) ) ;
Sputchar ( fd, '\n' ) ;
}
if ( ! is_defaults )
if ( SC_SPECIFIED( scp, A_ENV ) )
{
tabprint( fd, tab_level+1, "Environment additions:\n" ) ;
for ( u = 0 ; u < pset_count( SC_ENV_VAR_DEFS(scp) ) ; u++ )
tabprint( fd, tab_level+2,
"%s\n", (char *) pset_pointer( SC_ENV_VAR_DEFS(scp), u ) ) ;
}
if ( SC_ENV( scp )->env_type == CUSTOM_ENV )
{
tabprint( fd, tab_level+1, "Environment strings:\n" ) ;
for ( pp = env_getvars( SC_ENV( scp )->env_handle ) ; *pp ; pp++ )
tabprint( fd, tab_level+2, "%s\n", *pp ) ;
}
Sflush( fd ) ;
}
static int get_next_inet_entry( int fd, pset_h sconfs,
struct service_config *defaults)
{
char *p;
str_h strp;
char *line = next_line(fd);
struct service_config *scp;
unsigned u, i;
const char *func = "get_next_inet_entry";
char *name = NULL, *rpcvers = NULL, *rpcproto = NULL;
char *group, *proto, *stype;
const struct name_value *nvp;
struct protoent *pep ;
struct passwd *pw ;
struct group *grp ;
const char *dot = ".";
const char *slash = "/";
pset_h args;
if( line == CHAR_NULL )
return -2;
strp = str_parse( line, " \t", STR_RETURN_ERROR, INT_NULL ) ;
if( strp == NULL )
{
parsemsg( LOG_CRIT, func, "inetd.conf - str_parse failed" ) ;
return( -1 ) ;
}
if( (args = pset_create(10,10)) == NULL )
{
out_of_memory(func);
return -1;
}
/* Break the line into components, based on spaces */
while( (p = str_component( strp )) )
{
if( pset_add(args, p) == NULL )
{
parsemsg( LOG_CRIT, func, ES_NOMEM );
pset_destroy(args);
return -1;
}
}
str_endparse( strp );
/* get the service name */
name = new_string((char *)pset_pointer( args, 0 ));
if( name == NULL ) {
parsemsg( LOG_ERR, func, "inetd.conf - Invalid service name" );
pset_destroy(args);
return -1;
}
/* Check to find the '/' for specifying RPC version numbers */
if( (rpcvers = strstr(name, slash)) != NULL ) {
*rpcvers = '\0';
rpcvers++;
}
scp = sc_alloc( name );
if( scp == NULL )
{
pset_destroy(args);
free( name );
return -1;
}
/*
* sc_alloc makes its own copy of name. At this point, sc_alloc worked
* so we will free our copy to avoid leaks.
*/
free( name );
/* Replicate inetd behavior in this regard. Also makes sure the
* service actually works on system where setgroups(0,NULL) doesn't
* work.
*/
SC_GROUPS(scp) = YES;
SC_SPECIFY( scp, A_GROUPS );
/* Get the socket type (stream dgram) */
stype = (char *)pset_pointer(args, 1);
if( stype == NULL ) {
parsemsg( LOG_ERR, func, "inetd.conf - Invalid socket type" );
pset_destroy(args);
sc_free(scp);
return -1;
}
nvp = nv_find_value( socket_types, stype );
if( nvp == NULL )
{
parsemsg( LOG_ERR, func, "inetd.conf - Bad socket type: %s", p);
pset_destroy(args);
sc_free(scp);
return -1;
}
SC_SOCKET_TYPE(scp) = nvp->value;
/* Get the protocol type */
proto = (char *)pset_pointer(args,2);
if( strstr(proto, "rpc") != NULL )
{
int rpcmin, rpcmax;
struct rpc_data *rdp = SC_RPCDATA( scp ) ;
if( rpcvers == NULL ) {
pset_destroy(args);
sc_free(scp);
return -1;
/* uh oh */
}
p = strchr(rpcvers, '-');
if( p && parse_int(rpcvers, 10, '-', &rpcmin) == 0 ) {
if( parse_base10(p + 1, &rpcmax) || rpcmin > rpcmax ) {
pset_destroy(args);
sc_free(scp);
return -1;
}
} else {
if( parse_base10(rpcvers, &rpcmin) ) {
pset_destroy(args);
sc_free(scp);
return -1;
}
rpcmax = rpcmin;
}
/* now have min and max rpc versions */
rdp->rd_min_version = rpcmin;
rdp->rd_max_version = rpcmax;
rpcproto = strstr(proto, slash);
if( rpcproto == NULL ) {
parsemsg( LOG_ERR, func, "inetd.conf - bad rpc version numbers" );
pset_destroy(args);
sc_free(scp);
return -1;
}
*rpcproto = '\0';
rpcproto++;
proto = rpcproto;
/* Set the RPC type field */
nvp = nv_find_value( service_types, "RPC" );
if ( nvp == NULL )
{
parsemsg( LOG_WARNING, func, "inetd.conf - Bad foo %s", name ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
M_SET(SC_TYPE(scp), nvp->value);
}
if ( ( pep = getprotobyname( proto ) ) == NULL )
{
parsemsg( LOG_ERR, func, "inetd.conf - Protocol %s not in /etc/protocols",
proto ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
SC_PROTONAME(scp) = new_string( proto ) ;
if ( SC_PROTONAME(scp) == NULL )
{
out_of_memory( func ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
SC_PROTOVAL(scp) = pep->p_proto;
SC_SPECIFY(scp, A_PROTOCOL);
/* Get the wait attribute */
p = (char *)pset_pointer(args, 3);
if ( p == NULL ) {
parsemsg( LOG_ERR, func, "inetd.conf - No value specified for wait" );
sc_free(scp);
return -1;
}
if ( EQ( p, "wait" ) )
SC_WAIT(scp) = YES ;
else if ( EQ( p, "nowait" ) )
SC_WAIT(scp) = NO ;
else
parsemsg( LOG_ERR, func, "inetd.conf - Bad value for wait: %s", p ) ;
/* Get the user to run as */
p = (char *)pset_pointer(args, 4);
if ( p == NULL ) {
parsemsg( LOG_ERR, func, "inetd.conf - No value specified for user" );
sc_free(scp);
return -1;
}
if( (group = strstr(p, dot)) )
{
*group = '\0';
group++;
grp = (struct group *)getgrnam( (char *)group ) ;
if ( grp == NULL )
{
parsemsg( LOG_ERR, func, "inetd.conf - Unknown group: %s", group ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
SC_GID(scp) = ((struct group *)grp)->gr_gid;
SC_SPECIFY( scp, A_GROUP );
}
pw = getpwnam( p );
if ( pw == NULL )
{
parsemsg( LOG_ERR, func, "inetd.conf - Unknown user: %s", p ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
str_fill( pw->pw_passwd, ' ' );
SC_UID(scp) = pw->pw_uid;
SC_USER_GID(scp) = pw->pw_gid;
/* Get server name, or flag as internal */
p = (char *)pset_pointer(args, 5);
if ( p == NULL ) {
parsemsg( LOG_ERR, func, "inetd.conf - No value specified for user" );
sc_free(scp);
return -1;
}
if( EQ( p, "internal" ) )
{
nvp = nv_find_value( service_types, "INTERNAL" );
if ( nvp == NULL )
{
parsemsg( LOG_WARNING, func, "inetd.conf - Bad foo %s", name ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
M_SET(SC_TYPE(scp), nvp->value);
if( EQ( SC_NAME(scp), "time" ) ) {
if( EQ( proto, "stream" ) )
SC_ID(scp) = new_string("time-stream");
else
SC_ID(scp) = new_string("time-dgram");
}
if( EQ( SC_NAME(scp), "daytime" ) ) {
if( EQ( proto, "stream" ) )
SC_ID(scp) = new_string("daytime-stream");
else
SC_ID(scp) = new_string("daytime-dgram");
}
if( EQ( SC_NAME(scp), "chargen" ) ) {
if( EQ( proto, "stream" ) )
SC_ID(scp) = new_string("chargen-stream");
else
SC_ID(scp) = new_string("chargen-dgram");
}
if( EQ( SC_NAME(scp), "echo" ) ) {
if( EQ( proto, "stream" ) )
SC_ID(scp) = new_string("echo-stream");
else
SC_ID(scp) = new_string("echo-dgram");
}
if( EQ( SC_NAME(scp), "discard" ) )
{
parsemsg(LOG_WARNING, func,
"inetd.conf - service discard not supported");
pset_destroy(args);
sc_free(scp);
return -1;
}
}
else
{
SC_SERVER(scp) = new_string( p );
if ( SC_SERVER(scp) == NULL )
{
out_of_memory( func ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
SC_SPECIFY( scp, A_SERVER);
/* Get argv */
SC_SERVER_ARGV(scp) = (char **)argv_alloc(pset_count(args)+1);
for( u = 0; u < pset_count(args)-6 ; u++ )
{
p = new_string((char *)pset_pointer(args, u+6));
if( p == NULL )
{
for ( i = 1 ; i < u ; i++ )
free( SC_SERVER_ARGV(scp)[i] );
free( SC_SERVER_ARGV(scp) );
pset_destroy(args);
sc_free(scp);
return -1;
}
SC_SERVER_ARGV(scp)[u] = p;
}
/* Set the reuse flag, as this is the default for inetd */
nvp = nv_find_value( service_flags, "REUSE" );
if ( nvp == NULL )
{
parsemsg( LOG_WARNING, func, "inetd.conf - Bad foo %s", name ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
M_SET(SC_XFLAGS(scp), nvp->value);
/* Set the NOLIBWRAP flag, since inetd doesn't have libwrap built in */
nvp = nv_find_value( service_flags, "NOLIBWRAP" );
if ( nvp == NULL )
{
parsemsg( LOG_WARNING, func, "inetd.conf - Bad foo %s", name ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
M_SET(SC_XFLAGS(scp), nvp->value);
/* Set the NAMEINARGS flag, as that's the default for inetd */
nvp = nv_find_value( service_flags, "NAMEINARGS" );
if ( nvp == NULL )
{
parsemsg( LOG_WARNING, func, "inetd.conf - Bad foo %s", name ) ;
pset_destroy(args);
sc_free(scp);
return (-1);
}
M_SET(SC_XFLAGS(scp), nvp->value);
SC_SPECIFY( scp, A_SERVER_ARGS );
if ( (SC_ID(scp) = new_string( SC_NAME(scp) )) )
SC_PRESENT( scp, A_ID ) ;
else
{
out_of_memory( func ) ;
pset_destroy(args);
sc_free(scp);
return -1;
}
}
SC_SPECIFY( scp, A_PROTOCOL );
SC_SPECIFY( scp, A_USER );
SC_SPECIFY( scp, A_SOCKET_TYPE );
SC_SPECIFY( scp, A_WAIT );
if( ! pset_add(sconfs, scp) )
{
out_of_memory( func );
pset_destroy(args);
sc_free(scp);
return -1;
}
pset_destroy(args);
parsemsg( LOG_DEBUG, func, "added service %s", SC_NAME(scp));
return 0;
}
static void set_credentials( const struct service_config *scp )
{
const char *func = "set_credentials" ;
if ( SC_SPECIFIED( scp, A_GROUP ) || SC_SPECIFIED( scp, A_USER ) ) {
if ( ps.ros.is_superuser )
{
gid_t gid = SC_GETGID( scp ) ;
if ( setgid( gid ) == -1 )
{
msg( LOG_ERR, func, "setgid failed: %m" ) ;
_exit( 1 ) ;
}
#ifndef NO_INITGROUPS
/*
* Bug discovered by [email protected] (a bug fix was also provided;
* a slightly modified version is included here):
* initgroups was not being invoked to set the remaining
* groups appropriately
*/
/* Solar Designer's groups fix */
if ( SC_SPECIFIED( scp, A_USER ) && SC_SPECIFIED( scp, A_GROUPS ) &&
scp->sc_groups == YES )
{
struct passwd *pwd ;
/*
* Invoke getpwuid() to get the user's name.
*
* XXX: we should not need to invoke getpwuid(); we should
* remember the user name in the configuration file.
*/
if ( ( pwd = getpwuid( SC_UID( scp ) ) ) == NULL )
{
msg( LOG_ERR, func, "getpwuid( %d ) (service=%s) failed: %m",
SC_UID( scp ), SC_ID( scp ) ) ;
_exit( 1 ) ;
}
str_fill( pwd->pw_passwd, ' ' );
if ( initgroups( pwd->pw_name, pwd->pw_gid ) == -1 )
{
msg( LOG_ERR, func, "initgroups( %s, %d ) failed: %m",
pwd->pw_name, pwd->pw_gid ) ;
_exit( 1 ) ;
}
}
else
{
if ( setgroups( 0, NULL ) )
{
msg( LOG_ERR, func, "setgroups( 0, NULL ) failed: %m" ) ;
msg( LOG_ERR, func, "Your system may require that 'groups = yes' be defined for this service: %s", scp->sc_name);
_exit( 1 ) ;
}
}
#endif /* ! NO_INITGROUPS */
}
}
if ( SC_SPECIFIED( scp, A_USER ) ) {
if ( setuid( SC_UID( scp ) ) == -1 )
{
msg( LOG_ERR, func, "setuid failed: %m" ) ;
_exit( 1 ) ;
}
}
if ( SC_SPECIFIED( scp, A_UMASK ) )
umask(scp->sc_umask);
}