diff options
Diffstat (limited to 'source3/winbindd/winbindd_cm.c')
| -rw-r--r-- | source3/winbindd/winbindd_cm.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/source3/winbindd/winbindd_cm.c b/source3/winbindd/winbindd_cm.c index b36f79fb3c..8e29b7d584 100644 --- a/source3/winbindd/winbindd_cm.c +++ b/source3/winbindd/winbindd_cm.c @@ -1419,6 +1419,88 @@ static bool find_new_dc(TALLOC_CTX *mem_ctx, goto again; } +static char *current_dc_key(TALLOC_CTX *mem_ctx, const char *domain_name) +{ + return talloc_asprintf_strupper_m(mem_ctx, "CURRENT_DCNAME/%s", + domain_name); +} + +static void store_current_dc_in_gencache(const char *domain_name, + const char *dc_name, + struct cli_state *cli) +{ + char addr[INET6_ADDRSTRLEN]; + char *key, *value; + + if (cli == NULL) { + return; + } + if (cli->fd == -1) { + return; + } + get_peer_addr(cli->fd, addr, sizeof(addr)); + + key = current_dc_key(talloc_tos(), domain_name); + if (key == NULL) { + goto done; + } + + value = talloc_asprintf(talloc_tos(), "%s %s", addr, dc_name); + if (value == NULL) { + goto done; + } + + gencache_set(key, value, 0x7ffffffff); +done: + TALLOC_FREE(value); + TALLOC_FREE(key); +} + +bool fetch_current_dc_from_gencache(TALLOC_CTX *mem_ctx, + const char *domain_name, + char **p_dc_name, char **p_dc_ip) +{ + char *key, *value, *p; + bool ret = false; + char *dc_name = NULL; + char *dc_ip = NULL; + + key = current_dc_key(talloc_tos(), domain_name); + if (key == NULL) { + goto done; + } + if (!gencache_get(key, &value, NULL)) { + goto done; + } + p = strchr(value, ' '); + if (p == NULL) { + goto done; + } + dc_ip = talloc_strndup(mem_ctx, value, p - value); + if (dc_ip == NULL) { + goto done; + } + dc_name = talloc_strdup(mem_ctx, p+1); + if (dc_name == NULL) { + goto done; + } + + if (p_dc_ip != NULL) { + *p_dc_ip = dc_ip; + dc_ip = NULL; + } + if (p_dc_name != NULL) { + *p_dc_name = dc_name; + dc_name = NULL; + } + ret = true; +done: + TALLOC_FREE(dc_name); + TALLOC_FREE(dc_ip); + TALLOC_FREE(key); + return ret; +} + static NTSTATUS cm_open_connection(struct winbindd_domain *domain, struct winbindd_cm_conn *new_conn) { @@ -1520,6 +1602,17 @@ static NTSTATUS cm_open_connection(struct winbindd_domain *domain, set_global_winbindd_state_online(); } set_domain_online(domain); + + /* + * Much as I hate global state, this seems to be the point + * where we can be certain that we have a proper connection to + * a DC. wbinfo --dc-info needs that information, store it in + * gencache with a looong timeout. This will need revisiting + * once we start to connect to multiple DCs, wbcDcInfo is + * already prepared for that. + */ + store_current_dc_in_gencache(domain->name, domain->dcname, + new_conn->cli); } else { /* Ensure we setup the retry handler. */ set_domain_offline(domain); |