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NetworkManager/src/nm-cloud-setup/nmcs-provider-azure.c
Thomas Haller 08eff4c46e
glib-aux: rename IP address related helpers from "nm-inet-utils.h" 
- name things related to `in_addr_t`, `struct in6_addr`, `NMIPAddr` as
  `nm_ip4_addr_*()`, `nm_ip6_addr_*()`, `nm_ip_addr_*()`, respectively.

- we have a wrapper `nm_inet_ntop()` for `inet_ntop()`. This name
  of our wrapper is chosen to be familiar with the libc underlying
  function. With this, also name functions that are about string
  representations of addresses `nm_inet_*()`, `nm_inet4_*()`,
  `nm_inet6_*()`. For example, `nm_inet_parse_str()`,
  `nm_inet_is_normalized()`.

<<<<

  R() {
     git grep -l "$1" | xargs sed -i "s/\<$1\>/$2/g"
  }

  R NM_CMP_DIRECT_IN4ADDR_SAME_PREFIX          NM_CMP_DIRECT_IP4_ADDR_SAME_PREFIX
  R NM_CMP_DIRECT_IN6ADDR_SAME_PREFIX          NM_CMP_DIRECT_IP6_ADDR_SAME_PREFIX
  R NM_UTILS_INET_ADDRSTRLEN                   NM_INET_ADDRSTRLEN
  R _nm_utils_inet4_ntop                       nm_inet4_ntop
  R _nm_utils_inet6_ntop                       nm_inet6_ntop
  R _nm_utils_ip4_get_default_prefix           nm_ip4_addr_get_default_prefix
  R _nm_utils_ip4_get_default_prefix0          nm_ip4_addr_get_default_prefix0
  R _nm_utils_ip4_netmask_to_prefix            nm_ip4_addr_netmask_to_prefix
  R _nm_utils_ip4_prefix_to_netmask            nm_ip4_addr_netmask_from_prefix
  R nm_utils_inet4_ntop_dup                    nm_inet4_ntop_dup
  R nm_utils_inet6_ntop_dup                    nm_inet6_ntop_dup
  R nm_utils_inet_ntop                         nm_inet_ntop
  R nm_utils_inet_ntop_dup                     nm_inet_ntop_dup
  R nm_utils_ip4_address_clear_host_address    nm_ip4_addr_clear_host_address
  R nm_utils_ip4_address_is_link_local         nm_ip4_addr_is_link_local
  R nm_utils_ip4_address_is_loopback           nm_ip4_addr_is_loopback
  R nm_utils_ip4_address_is_zeronet            nm_ip4_addr_is_zeronet
  R nm_utils_ip4_address_same_prefix           nm_ip4_addr_same_prefix
  R nm_utils_ip4_address_same_prefix_cmp       nm_ip4_addr_same_prefix_cmp
  R nm_utils_ip6_address_clear_host_address    nm_ip6_addr_clear_host_address
  R nm_utils_ip6_address_same_prefix           nm_ip6_addr_same_prefix
  R nm_utils_ip6_address_same_prefix_cmp       nm_ip6_addr_same_prefix_cmp
  R nm_utils_ip6_is_ula                        nm_ip6_addr_is_ula
  R nm_utils_ip_address_same_prefix            nm_ip_addr_same_prefix
  R nm_utils_ip_address_same_prefix_cmp        nm_ip_addr_same_prefix_cmp
  R nm_utils_ip_is_site_local                  nm_ip_addr_is_site_local
  R nm_utils_ipaddr_is_normalized              nm_inet_is_normalized
  R nm_utils_ipaddr_is_valid                   nm_inet_is_valid
  R nm_utils_ipx_address_clear_host_address    nm_ip_addr_clear_host_address
  R nm_utils_parse_inaddr                      nm_inet_parse_str
  R nm_utils_parse_inaddr_bin                  nm_inet_parse_bin
  R nm_utils_parse_inaddr_bin_full             nm_inet_parse_bin_full
  R nm_utils_parse_inaddr_prefix               nm_inet_parse_with_prefix_str
  R nm_utils_parse_inaddr_prefix_bin           nm_inet_parse_with_prefix_bin
  R test_nm_utils_ip6_address_same_prefix      test_nm_ip_addr_same_prefix

  ./contrib/scripts/nm-code-format.sh -F
2022-08-25 19:05:51 +02:00

563 lines
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "libnm-client-aux-extern/nm-default-client.h"
#include "nmcs-provider-azure.h"
#include "nm-cloud-setup-utils.h"
/*****************************************************************************/
#define HTTP_TIMEOUT_MS 3000
#define NM_AZURE_METADATA_HEADER "Metadata:true"
#define NM_AZURE_HOST "169.254.169.254"
#define NM_AZURE_BASE "http://" NM_AZURE_HOST
#define NM_AZURE_API_VERSION "?format=text&api-version=2017-04-02"
#define NM_AZURE_METADATA_URL_BASE /* $NM_AZURE_BASE/$NM_AZURE_API_VERSION */ \
"/metadata/instance/network/interface/"
#define _azure_uri_concat(...) \
nmcs_utils_uri_build_concat(NM_AZURE_BASE, __VA_ARGS__, NM_AZURE_API_VERSION)
#define _azure_uri_interfaces(...) _azure_uri_concat(NM_AZURE_METADATA_URL_BASE, ##__VA_ARGS__)
/*****************************************************************************/
struct _NMCSProviderAzure {
NMCSProvider parent;
};
struct _NMCSProviderAzureClass {
NMCSProviderClass parent;
};
G_DEFINE_TYPE(NMCSProviderAzure, nmcs_provider_azure, NMCS_TYPE_PROVIDER);
/*****************************************************************************/
static void
_detect_get_meta_data_done_cb(GObject *source, GAsyncResult *result, gpointer user_data)
{
gs_unref_object GTask *task = user_data;
gs_free_error GError *get_error = NULL;
gs_free_error GError *error = NULL;
nm_http_client_poll_get_finish(NM_HTTP_CLIENT(source), result, NULL, NULL, &get_error);
if (nm_utils_error_is_cancelled(get_error)) {
g_task_return_error(task, g_steal_pointer(&get_error));
return;
}
if (get_error) {
nm_utils_error_set(&error,
NM_UTILS_ERROR_UNKNOWN,
"failure to get Azure metadata: %s",
get_error->message);
g_task_return_error(task, g_steal_pointer(&error));
return;
}
g_task_return_boolean(task, TRUE);
}
static void
detect(NMCSProvider *provider, GTask *task)
{
NMHttpClient *http_client;
gs_free char *uri = NULL;
http_client = nmcs_provider_get_http_client(provider);
nm_http_client_poll_get(http_client,
(uri = _azure_uri_concat("/metadata/instance")),
HTTP_TIMEOUT_MS,
256 * 1024,
7000,
1000,
NM_MAKE_STRV(NM_AZURE_METADATA_HEADER),
g_task_get_cancellable(task),
NULL,
NULL,
_detect_get_meta_data_done_cb,
task);
}
/*****************************************************************************/
typedef enum {
GET_CONFIG_FETCH_TYPE_IPV4_IPADDRESS_X_PRIVATEIPADDRESS,
GET_CONFIG_FETCH_TYPE_IPV4_SUBNET_0_ADDRESS,
GET_CONFIG_FETCH_TYPE_IPV4_SUBNET_0_PREFIX,
} GetConfigFetchType;
typedef struct {
NMCSProviderGetConfigTaskData *get_config_data;
NMCSProviderGetConfigIfaceData *iface_get_config;
gssize intern_iface_idx;
gssize extern_iface_idx;
guint n_iface_data_pending;
} AzureIfaceData;
static void
_azure_iface_data_destroy(AzureIfaceData *iface_data)
{
nm_g_slice_free(iface_data);
}
static void
_get_config_fetch_done_cb(NMHttpClient *http_client,
GAsyncResult *result,
AzureIfaceData *iface_data,
GetConfigFetchType fetch_type)
{
NMCSProviderGetConfigTaskData *get_config_data;
NMCSProviderGetConfigIfaceData *iface_get_config;
gs_unref_bytes GBytes *response = NULL;
gs_free_error GError *error = NULL;
const char *resp_str = NULL;
gsize resp_len;
char tmp_addr_str[NM_INET_ADDRSTRLEN];
in_addr_t tmp_addr;
int tmp_prefix = -1;
nm_http_client_poll_get_finish(http_client, result, NULL, &response, &error);
if (nm_utils_error_is_cancelled(error))
return;
get_config_data = iface_data->get_config_data;
iface_get_config = iface_data->iface_get_config;
if (error)
goto out_done;
resp_str = g_bytes_get_data(response, &resp_len);
nm_assert(resp_str[resp_len] == '\0');
switch (fetch_type) {
case GET_CONFIG_FETCH_TYPE_IPV4_IPADDRESS_X_PRIVATEIPADDRESS:
if (!nmcs_utils_ipaddr_normalize_bin(AF_INET, resp_str, resp_len, NULL, &tmp_addr)) {
error =
nm_utils_error_new(NM_UTILS_ERROR_UNKNOWN, "ip is not a valid private ip address");
goto out_done;
}
_LOGD("interface[%" G_GSSIZE_FORMAT "]: received address %s",
iface_data->intern_iface_idx,
nm_inet4_ntop(tmp_addr, tmp_addr_str));
iface_get_config->ipv4s_arr[iface_get_config->ipv4s_len] = tmp_addr;
iface_get_config->has_ipv4s = TRUE;
iface_get_config->ipv4s_len++;
break;
case GET_CONFIG_FETCH_TYPE_IPV4_SUBNET_0_ADDRESS:
if (!nmcs_utils_ipaddr_normalize_bin(AF_INET, resp_str, resp_len, NULL, &tmp_addr)) {
error = nm_utils_error_new(NM_UTILS_ERROR_UNKNOWN, "ip is not a subnet address");
goto out_done;
}
_LOGD("interface[%" G_GSSIZE_FORMAT "]: received subnet address %s",
iface_data->intern_iface_idx,
nm_inet4_ntop(tmp_addr, tmp_addr_str));
iface_get_config->cidr_addr = tmp_addr;
break;
case GET_CONFIG_FETCH_TYPE_IPV4_SUBNET_0_PREFIX:
tmp_prefix = _nm_utils_ascii_str_to_int64_bin(resp_str, resp_len, 10, 0, 32, -1);
if (tmp_prefix == -1) {
_LOGD("interface[%" G_GSSIZE_FORMAT "]: invalid prefix", iface_data->intern_iface_idx);
error =
nm_utils_error_new(NM_UTILS_ERROR_UNKNOWN, "subnet does not give a valid prefix");
goto out_done;
}
_LOGD("interface[%" G_GSSIZE_FORMAT "]: received subnet prefix %d",
iface_data->intern_iface_idx,
tmp_prefix);
iface_get_config->cidr_prefix = tmp_prefix;
break;
}
out_done:
if (!error) {
--iface_data->n_iface_data_pending;
if (iface_data->n_iface_data_pending > 0)
return;
/* we surely have cidr_addr and cidr_prefix, otherwise
* we would have errored out above. */
iface_get_config->has_cidr = TRUE;
}
--get_config_data->n_pending;
_nmcs_provider_get_config_task_maybe_return(get_config_data, g_steal_pointer(&error));
}
static void
_get_config_fetch_done_cb_ipv4_ipaddress_x_privateipaddress(GObject *source,
GAsyncResult *result,
gpointer user_data)
{
_get_config_fetch_done_cb(NM_HTTP_CLIENT(source),
result,
user_data,
GET_CONFIG_FETCH_TYPE_IPV4_IPADDRESS_X_PRIVATEIPADDRESS);
}
static void
_get_config_fetch_done_cb_ipv4_subnet_0_address(GObject *source,
GAsyncResult *result,
gpointer user_data)
{
_get_config_fetch_done_cb(NM_HTTP_CLIENT(source),
result,
user_data,
GET_CONFIG_FETCH_TYPE_IPV4_SUBNET_0_ADDRESS);
}
static void
_get_config_fetch_done_cb_ipv4_subnet_0_prefix(GObject *source,
GAsyncResult *result,
gpointer user_data)
{
_get_config_fetch_done_cb(NM_HTTP_CLIENT(source),
result,
user_data,
GET_CONFIG_FETCH_TYPE_IPV4_SUBNET_0_PREFIX);
}
static void
_get_config_ips_prefix_list_cb(GObject *source, GAsyncResult *result, gpointer user_data)
{
gs_unref_bytes GBytes *response = NULL;
AzureIfaceData *iface_data = user_data;
gs_free_error GError *error = NULL;
const char *response_str = NULL;
gsize response_len;
NMCSProviderGetConfigTaskData *get_config_data;
const char *line;
gsize line_len;
char iface_idx_str[30];
nm_http_client_poll_get_finish(NM_HTTP_CLIENT(source), result, NULL, &response, &error);
if (nm_utils_error_is_cancelled(error))
return;
get_config_data = iface_data->get_config_data;
if (error)
goto out_error;
response_str = g_bytes_get_data(response, &response_len);
/* NMHttpClient guarantees that there is a trailing NUL after the data. */
nm_assert(response_str[response_len] == 0);
nm_assert(!iface_data->iface_get_config->ipv4s_arr);
nm_assert(!iface_data->iface_get_config->has_ipv4s);
nm_assert(!iface_data->iface_get_config->has_cidr);
nm_sprintf_buf(iface_idx_str, "%" G_GSSIZE_FORMAT, iface_data->intern_iface_idx);
while (nm_utils_parse_next_line(&response_str, &response_len, &line, &line_len)) {
gint64 ips_prefix_idx;
gs_free char *uri = NULL;
char buf[100];
if (line_len == 0)
continue;
/* Truncate the string. It's safe to do, because we own @response an it has an
* extra NULL character after the buffer. */
((char *) line)[line_len] = '\0';
if (line[line_len - 1] == '/')
((char *) line)[--line_len] = '\0';
ips_prefix_idx = _nm_utils_ascii_str_to_int64(line, 10, 0, G_MAXINT64, -1);
if (ips_prefix_idx < 0)
continue;
iface_data->n_iface_data_pending++;
nm_http_client_poll_get(
NM_HTTP_CLIENT(source),
(uri = _azure_uri_interfaces(iface_idx_str,
"/ipv4/ipAddress/",
nm_sprintf_buf(buf, "%" G_GINT64_FORMAT, ips_prefix_idx),
"/privateIpAddress")),
HTTP_TIMEOUT_MS,
512 * 1024,
10000,
1000,
NM_MAKE_STRV(NM_AZURE_METADATA_HEADER),
get_config_data->intern_cancellable,
NULL,
NULL,
_get_config_fetch_done_cb_ipv4_ipaddress_x_privateipaddress,
iface_data);
}
iface_data->iface_get_config->ipv4s_len = 0;
iface_data->iface_get_config->ipv4s_arr = g_new(in_addr_t, iface_data->n_iface_data_pending);
{
gs_free char *uri = NULL;
iface_data->n_iface_data_pending++;
nm_http_client_poll_get(
NM_HTTP_CLIENT(source),
(uri = _azure_uri_interfaces(iface_idx_str, "/ipv4/subnet/0/address/")),
HTTP_TIMEOUT_MS,
512 * 1024,
10000,
1000,
NM_MAKE_STRV(NM_AZURE_METADATA_HEADER),
get_config_data->intern_cancellable,
NULL,
NULL,
_get_config_fetch_done_cb_ipv4_subnet_0_address,
iface_data);
nm_clear_g_free(&uri);
iface_data->n_iface_data_pending++;
nm_http_client_poll_get(
NM_HTTP_CLIENT(source),
(uri = _azure_uri_interfaces(iface_idx_str, "/ipv4/subnet/0/prefix/")),
HTTP_TIMEOUT_MS,
512 * 1024,
10000,
1000,
NM_MAKE_STRV(NM_AZURE_METADATA_HEADER),
get_config_data->intern_cancellable,
NULL,
NULL,
_get_config_fetch_done_cb_ipv4_subnet_0_prefix,
iface_data);
}
return;
out_error:
--get_config_data->n_pending;
_nmcs_provider_get_config_task_maybe_return(get_config_data, g_steal_pointer(&error));
}
static void
_get_config_iface_cb(GObject *source, GAsyncResult *result, gpointer user_data)
{
NMCSProviderGetConfigTaskData *get_config_data;
gs_unref_bytes GBytes *response = NULL;
AzureIfaceData *iface_data = user_data;
gs_free char *v_hwaddr = NULL;
gs_free_error GError *error = NULL;
gs_free const char *uri = NULL;
char buf[100];
nm_http_client_poll_get_finish(NM_HTTP_CLIENT(source), result, NULL, &response, &error);
if (nm_utils_error_is_cancelled(error))
return;
get_config_data = iface_data->get_config_data;
if (error)
goto out_done;
v_hwaddr = nmcs_utils_hwaddr_normalize_gbytes(response);
if (!v_hwaddr) {
_LOGI("interface[%" G_GSSIZE_FORMAT "]: invalid MAC address returned",
iface_data->intern_iface_idx);
error = nm_utils_error_new(NM_UTILS_ERROR_UNKNOWN,
"invalid MAC address for index %" G_GSSIZE_FORMAT,
iface_data->intern_iface_idx);
goto out_done;
}
iface_data->iface_get_config = g_hash_table_lookup(get_config_data->result_dict, v_hwaddr);
if (!iface_data->iface_get_config) {
if (!get_config_data->any) {
_LOGD("get-config: skip fetching meta data for %s (%" G_GSSIZE_FORMAT ")",
v_hwaddr,
iface_data->intern_iface_idx);
goto out_done;
}
iface_data->iface_get_config =
nmcs_provider_get_config_iface_data_create(get_config_data, FALSE, v_hwaddr);
} else {
if (iface_data->iface_get_config->iface_idx >= 0) {
_LOGI("interface[%" G_GSSIZE_FORMAT "]: duplicate MAC address %s returned",
iface_data->intern_iface_idx,
iface_data->iface_get_config->hwaddr);
error = nm_utils_error_new(NM_UTILS_ERROR_UNKNOWN,
"duplicate MAC address for index %" G_GSSIZE_FORMAT,
iface_data->intern_iface_idx);
goto out_done;
}
}
iface_data->iface_get_config->iface_idx = iface_data->extern_iface_idx;
_LOGD("interface[%" G_GSSIZE_FORMAT "]: found a matching device with hwaddr %s",
iface_data->intern_iface_idx,
iface_data->iface_get_config->hwaddr);
nm_sprintf_buf(buf, "%" G_GSSIZE_FORMAT "/ipv4/ipAddress/", iface_data->intern_iface_idx);
nm_http_client_poll_get(NM_HTTP_CLIENT(source),
(uri = _azure_uri_interfaces(buf)),
HTTP_TIMEOUT_MS,
512 * 1024,
10000,
1000,
NM_MAKE_STRV(NM_AZURE_METADATA_HEADER),
get_config_data->intern_cancellable,
NULL,
NULL,
_get_config_ips_prefix_list_cb,
iface_data);
return;
out_done:
--get_config_data->n_pending;
_nmcs_provider_get_config_task_maybe_return(get_config_data, g_steal_pointer(&error));
}
static void
_get_net_ifaces_list_cb(GObject *source, GAsyncResult *result, gpointer user_data)
{
NMCSProviderGetConfigTaskData *get_config_data;
gs_unref_ptrarray GPtrArray *ifaces_arr = NULL;
gs_unref_bytes GBytes *response = NULL;
gs_free_error GError *error = NULL;
const char *response_str;
gsize response_len;
const char *line;
gsize line_len;
guint i;
gssize extern_iface_idx_cnt = 0;
nm_http_client_poll_get_finish(NM_HTTP_CLIENT(source), result, NULL, &response, &error);
if (nm_utils_error_is_cancelled(error))
return;
get_config_data = user_data;
if (error) {
_nmcs_provider_get_config_task_maybe_return(get_config_data, g_steal_pointer(&error));
return;
}
response_str = g_bytes_get_data(response, &response_len);
/* NMHttpClient guarantees that there is a trailing NUL after the data. */
nm_assert(response_str[response_len] == 0);
ifaces_arr = g_ptr_array_new_with_free_func((GDestroyNotify) _azure_iface_data_destroy);
while (nm_utils_parse_next_line(&response_str, &response_len, &line, &line_len)) {
AzureIfaceData *iface_data;
gssize intern_iface_idx;
if (line_len == 0)
continue;
/* Truncate the string. It's safe to do, because we own @response an it has an
* extra NULL character after the buffer. */
((char *) line)[line_len] = '\0';
if (line[line_len - 1] == '/')
((char *) line)[--line_len] = '\0';
intern_iface_idx = _nm_utils_ascii_str_to_int64(line, 10, 0, G_MAXSSIZE, -1);
if (intern_iface_idx < 0)
continue;
iface_data = g_slice_new(AzureIfaceData);
*iface_data = (AzureIfaceData){
.get_config_data = get_config_data,
.iface_get_config = NULL,
.intern_iface_idx = intern_iface_idx,
.extern_iface_idx = extern_iface_idx_cnt++,
.n_iface_data_pending = 0,
};
g_ptr_array_add(ifaces_arr, iface_data);
}
_LOGD("found azure interfaces: %u", ifaces_arr->len);
if (ifaces_arr->len == 0) {
_nmcs_provider_get_config_task_maybe_return(
get_config_data,
nm_utils_error_new(NM_UTILS_ERROR_UNKNOWN, "no Azure interfaces found"));
return;
}
for (i = 0; i < ifaces_arr->len; ++i) {
AzureIfaceData *iface_data = ifaces_arr->pdata[i];
gs_free const char *uri = NULL;
char buf[100];
_LOGD("azure interface[%" G_GSSIZE_FORMAT "]: retrieving configuration",
iface_data->intern_iface_idx);
nm_sprintf_buf(buf, "%" G_GSSIZE_FORMAT "/macAddress", iface_data->intern_iface_idx);
get_config_data->n_pending++;
nm_http_client_poll_get(NM_HTTP_CLIENT(source),
(uri = _azure_uri_interfaces(buf)),
HTTP_TIMEOUT_MS,
512 * 1024,
10000,
1000,
NM_MAKE_STRV(NM_AZURE_METADATA_HEADER),
get_config_data->intern_cancellable,
NULL,
NULL,
_get_config_iface_cb,
iface_data);
}
get_config_data->extra_data_destroy = (GDestroyNotify) g_ptr_array_unref;
get_config_data->extra_data = g_steal_pointer(&ifaces_arr);
}
static void
get_config(NMCSProvider *provider, NMCSProviderGetConfigTaskData *get_config_data)
{
gs_free const char *uri = NULL;
nm_http_client_poll_get(nmcs_provider_get_http_client(provider),
(uri = _azure_uri_interfaces()),
HTTP_TIMEOUT_MS,
256 * 1024,
15000,
1000,
NM_MAKE_STRV(NM_AZURE_METADATA_HEADER),
get_config_data->intern_cancellable,
NULL,
NULL,
_get_net_ifaces_list_cb,
get_config_data);
}
/*****************************************************************************/
static void
nmcs_provider_azure_init(NMCSProviderAzure *self)
{}
static void
nmcs_provider_azure_class_init(NMCSProviderAzureClass *klass)
{
NMCSProviderClass *provider_class = NMCS_PROVIDER_CLASS(klass);
provider_class->_name = "azure";
provider_class->_env_provider_enabled = NMCS_ENV_VARIABLE("NM_CLOUD_SETUP_AZURE");
provider_class->detect = detect;
provider_class->get_config = get_config;
}
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