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ITS#9596 Allow slapd to listen on port 0

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And have it update the listening socket names as the port gets assigned.
This commit is contained in:
Ondřej Kuzník 2019-07-16 19:04:44 +02:00 committed by Quanah Gibson-Mount
parent e3905c9898
commit 544a7c8839
1 changed files with 33 additions and 28 deletions
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61
servers/slapd/daemon.c
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@ -1377,13 +1377,14 @@ get_url_perms(
static int
slap_get_listener_addresses(
const char *host,
int proto,
unsigned short port,
struct sockaddr ***sal )
{
struct sockaddr **sap;
#ifdef LDAP_PF_LOCAL
if ( port == 0 ) {
if ( proto == LDAP_PROTO_IPC ) {
sap = *sal = ch_malloc(2 * sizeof(void *));
*sap = ch_malloc(sizeof(struct sockaddr_un));
@ -1508,7 +1509,7 @@ slap_open_listener(
int *listeners,
int *cur )
{
int num, tmp, rc;
int num, proto, tmp, rc;
Listener l;
Listener *li;
LDAPURLDesc *lud;
@ -1526,7 +1527,7 @@ slap_open_listener(
int crit = 1;
#endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
rc = ldap_url_parse( url, &lud );
rc = ldap_url_parse_ext( url, &lud, LDAP_PVT_URL_PARSE_DEF_PORT );
if( rc != LDAP_URL_SUCCESS ) {
Debug( LDAP_DEBUG_ANY,
@ -1547,14 +1548,8 @@ slap_open_listener(
return -1;
}
if(! lud->lud_port ) lud->lud_port = LDAP_PORT;
#else /* HAVE_TLS */
l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
if(! lud->lud_port ) {
lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
}
#endif /* HAVE_TLS */
l.sl_is_proxied = ldap_pvt_url_scheme2proxied( lud->lud_scheme );
@ -1566,13 +1561,13 @@ slap_open_listener(
port = (unsigned short) lud->lud_port;
tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
if ( tmp == LDAP_PROTO_IPC ) {
proto = ldap_pvt_url_scheme2proto(lud->lud_scheme);
if ( proto == LDAP_PROTO_IPC ) {
#ifdef LDAP_PF_LOCAL
if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
err = slap_get_listener_addresses(LDAPI_SOCK, proto, 0, &sal);
} else {
err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
err = slap_get_listener_addresses(lud->lud_host, proto, 0, &sal);
}
#else /* ! LDAP_PF_LOCAL */
@ -1585,14 +1580,14 @@ slap_open_listener(
if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
|| strcmp(lud->lud_host, "*") == 0 )
{
err = slap_get_listener_addresses(NULL, port, &sal);
err = slap_get_listener_addresses(NULL, proto, port, &sal);
} else {
err = slap_get_listener_addresses(lud->lud_host, port, &sal);
err = slap_get_listener_addresses(lud->lud_host, proto, port, &sal);
}
}
#ifdef LDAP_CONNECTIONLESS
l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
l.sl_is_udp = ( proto == LDAP_PROTO_UDP );
#endif /* LDAP_CONNECTIONLESS */
#if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
@ -1774,34 +1769,44 @@ slap_open_listener(
case AF_INET: {
char addr[INET_ADDRSTRLEN];
const char *s;
const char *name;
unsigned short local_port = port;
if ( local_port == 0 ) {
socklen_t len = sizeof(struct sockaddr_in);
getsockname( s, *sal, &len );
}
#if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
s = inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
name = inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
addr, sizeof(addr) );
#else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
name = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
#endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
if (!s) s = SLAP_STRING_UNKNOWN;
port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
if (!name) name = SLAP_STRING_UNKNOWN;
local_port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
l.sl_name.bv_val =
ch_malloc( sizeof("IP=255.255.255.255:65535") );
snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
"IP=%s:%d", s, port );
"IP=%s:%d", name, local_port );
l.sl_name.bv_len = strlen( l.sl_name.bv_val );
} break;
#ifdef LDAP_PF_INET6
case AF_INET6: {
char addr[INET6_ADDRSTRLEN];
const char *s;
s = inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
const char *name;
unsigned short local_port = port;
if ( local_port == 0 ) {
socklen_t len = sizeof(struct sockaddr_in);
getsockname( s, *sal, &len );
}
name = inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
addr, sizeof addr);
if (!s) s = SLAP_STRING_UNKNOWN;
port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
l.sl_name.bv_len = strlen(s) + sizeof("IP=[]:65535");
if (!name) name = SLAP_STRING_UNKNOWN;
local_port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
l.sl_name.bv_len = strlen(name) + sizeof("IP=[]:65535");
l.sl_name.bv_val = ch_malloc( l.sl_name.bv_len );
snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=[%s]:%d",
s, port );
name, local_port );
l.sl_name.bv_len = strlen( l.sl_name.bv_val );
} break;
#endif /* LDAP_PF_INET6 */