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7459548f2351a11f00f19c26fa98dc19e88258cd
NetworkManager/clients/cli/common.c
Lubomir Rintel 9d95e1f175 clients/cli: use a nicer password prompt 
Makes sense in order for the user to know that they're actually typing
the password (edited just to illustrate the point, the actual output was
shamefully messy and perhaps needs fixing too):

  $ nmcli c up Wrathmosphere
  Passwords or encryption keys are required to access the wireless network 'Wrathmosphere'.
  Password (802-1x.password): *********
2017-12-18 14:47:37 +01:00

1321 lines
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/*
* nmcli - command-line tool for controlling NetworkManager
* Common functions and data shared between files.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright 2012 - 2017 Red Hat, Inc.
*/
#include "nm-default.h"
#include "common.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <readline/readline.h>
#include <readline/history.h>
#include "nm-vpn-helpers.h"
#include "nm-client-utils.h"
#include "utils.h"
/*****************************************************************************/
static char **
_ip_config_get_routes (NMIPConfig *cfg)
{
gs_unref_hashtable GHashTable *hash = NULL;
GPtrArray *ptr_array;
char **arr;
guint i;
ptr_array = nm_ip_config_get_routes (cfg);
if (!ptr_array)
return NULL;
arr = g_new (char *, ptr_array->len + 1);
for (i = 0; i < ptr_array->len; i++) {
NMIPRoute *route = g_ptr_array_index (ptr_array, i);
gs_strfreev char **names = NULL;
gsize j;
GString *str;
guint64 metric;
gs_free char *attributes = NULL;
str = g_string_new (NULL);
g_string_append_printf (str,
"dst = %s/%u, nh = %s",
nm_ip_route_get_dest (route),
nm_ip_route_get_prefix (route),
nm_ip_route_get_next_hop (route)
?: (nm_ip_route_get_family (route) == AF_INET ? "0.0.0.0" : "::"));
metric = nm_ip_route_get_metric (route);
if (metric != -1) {
g_string_append_printf (str,
", mt = %u",
(guint) metric);
}
names = nm_ip_route_get_attribute_names (route);
if (names[0]) {
if (!hash)
hash = g_hash_table_new (nm_str_hash, g_str_equal);
else
g_hash_table_remove_all (hash);
for (j = 0; names[j]; j++)
g_hash_table_insert (hash, names[j], nm_ip_route_get_attribute (route, names[j]));
attributes = nm_utils_format_variant_attributes (hash, ',', '=');
if (attributes) {
g_string_append (str, ", ");
g_string_append (str, attributes);
}
}
arr[i] = g_string_free (str, FALSE);
}
nm_assert (i == ptr_array->len);
arr[i] = NULL;
return arr;
}
static gconstpointer
_metagen_ip4_config_get_fcn (const NMMetaEnvironment *environment,
gpointer environment_user_data,
const NmcMetaGenericInfo *info,
gpointer target,
NMMetaAccessorGetType get_type,
NMMetaAccessorGetFlags get_flags,
NMMetaAccessorGetOutFlags *out_flags,
gpointer *out_to_free)
{
NMIPConfig *cfg4 = target;
GPtrArray *ptr_array;
char **arr;
const char *const*arrc;
guint i = 0;
nm_assert (info->info_type < _NMC_GENERIC_INFO_TYPE_IP4_CONFIG_NUM);
NMC_HANDLE_TERMFORMAT (NM_META_TERM_COLOR_NORMAL);
switch (info->info_type) {
case NMC_GENERIC_INFO_TYPE_IP4_CONFIG_ADDRESS:
if (!NM_FLAGS_HAS (get_flags, NM_META_ACCESSOR_GET_FLAGS_ACCEPT_STRV))
return NULL;
ptr_array = nm_ip_config_get_addresses (cfg4);
if (ptr_array) {
arr = g_new (char *, ptr_array->len + 1);
for (i = 0; i < ptr_array->len; i++) {
NMIPAddress *addr = g_ptr_array_index (ptr_array, i);
arr[i] = g_strdup_printf ("%s/%u",
nm_ip_address_get_address (addr),
nm_ip_address_get_prefix (addr));
}
arr[i] = NULL;
} else
arr = NULL;
goto arr_out;
case NMC_GENERIC_INFO_TYPE_IP4_CONFIG_GATEWAY:
return nm_ip_config_get_gateway (cfg4);
case NMC_GENERIC_INFO_TYPE_IP4_CONFIG_ROUTE:
if (!NM_FLAGS_HAS (get_flags, NM_META_ACCESSOR_GET_FLAGS_ACCEPT_STRV))
return NULL;
arr = _ip_config_get_routes (cfg4);
goto arr_out;
case NMC_GENERIC_INFO_TYPE_IP4_CONFIG_DNS:
if (!NM_FLAGS_HAS (get_flags, NM_META_ACCESSOR_GET_FLAGS_ACCEPT_STRV))
return NULL;
arrc = nm_ip_config_get_nameservers (cfg4);
goto arrc_out;
case NMC_GENERIC_INFO_TYPE_IP4_CONFIG_DOMAIN:
if (!NM_FLAGS_HAS (get_flags, NM_META_ACCESSOR_GET_FLAGS_ACCEPT_STRV))
return NULL;
arrc = nm_ip_config_get_domains (cfg4);
goto arrc_out;
case NMC_GENERIC_INFO_TYPE_IP4_CONFIG_WINS:
if (!NM_FLAGS_HAS (get_flags, NM_META_ACCESSOR_GET_FLAGS_ACCEPT_STRV))
return NULL;
arrc = nm_ip_config_get_wins_servers (cfg4);
goto arrc_out;
default:
break;
}
g_return_val_if_reached (NULL);
arrc_out:
*out_flags |= NM_META_ACCESSOR_GET_OUT_FLAGS_STRV;
return arrc;
arr_out:
*out_flags |= NM_META_ACCESSOR_GET_OUT_FLAGS_STRV;
*out_to_free = arr;
return arr;
}
static gconstpointer
_metagen_ip6_config_get_fcn (const NMMetaEnvironment *environment,
gpointer environment_user_data,
const NmcMetaGenericInfo *info,
gpointer target,
NMMetaAccessorGetType get_type,
NMMetaAccessorGetFlags get_flags,
NMMetaAccessorGetOutFlags *out_flags,
gpointer *out_to_free)
{
NMIPConfig *cfg6 = target;
GPtrArray *ptr_array;
char **arr;
const char *const*arrc;
guint i = 0;
nm_assert (info->info_type < _NMC_GENERIC_INFO_TYPE_IP6_CONFIG_NUM);
NMC_HANDLE_TERMFORMAT (NM_META_TERM_COLOR_NORMAL);
switch (info->info_type) {
case NMC_GENERIC_INFO_TYPE_IP6_CONFIG_ADDRESS:
if (!NM_FLAGS_HAS (get_flags, NM_META_ACCESSOR_GET_FLAGS_ACCEPT_STRV))
return NULL;
ptr_array = nm_ip_config_get_addresses (cfg6);
if (ptr_array) {
arr = g_new (char *, ptr_array->len + 1);
for (i = 0; i < ptr_array->len; i++) {
NMIPAddress *addr = g_ptr_array_index (ptr_array, i);
arr[i] = g_strdup_printf ("%s/%u",
nm_ip_address_get_address (addr),
nm_ip_address_get_prefix (addr));
}
arr[i] = NULL;
} else
arr = NULL;
goto arr_out;
case NMC_GENERIC_INFO_TYPE_IP6_CONFIG_GATEWAY:
return nm_ip_config_get_gateway (cfg6);
case NMC_GENERIC_INFO_TYPE_IP6_CONFIG_ROUTE:
if (!NM_FLAGS_HAS (get_flags, NM_META_ACCESSOR_GET_FLAGS_ACCEPT_STRV))
return NULL;
arr = _ip_config_get_routes (cfg6);
goto arr_out;
case NMC_GENERIC_INFO_TYPE_IP6_CONFIG_DNS:
if (!NM_FLAGS_HAS (get_flags, NM_META_ACCESSOR_GET_FLAGS_ACCEPT_STRV))
return NULL;
arrc = nm_ip_config_get_nameservers (cfg6);
goto arrc_out;
case NMC_GENERIC_INFO_TYPE_IP6_CONFIG_DOMAIN:
if (!NM_FLAGS_HAS (get_flags, NM_META_ACCESSOR_GET_FLAGS_ACCEPT_STRV))
return NULL;
arrc = nm_ip_config_get_domains (cfg6);
goto arrc_out;
default:
break;
}
g_return_val_if_reached (NULL);
arrc_out:
*out_flags |= NM_META_ACCESSOR_GET_OUT_FLAGS_STRV;
return arrc;
arr_out:
*out_flags |= NM_META_ACCESSOR_GET_OUT_FLAGS_STRV;
*out_to_free = arr;
return arr;
}
const NmcMetaGenericInfo *const metagen_ip4_config[_NMC_GENERIC_INFO_TYPE_IP4_CONFIG_NUM + 1] = {
#define _METAGEN_IP4_CONFIG(type, name) \
[type] = NMC_META_GENERIC(name, .info_type = type, .get_fcn = _metagen_ip4_config_get_fcn)
_METAGEN_IP4_CONFIG (NMC_GENERIC_INFO_TYPE_IP4_CONFIG_ADDRESS, "ADDRESS"),
_METAGEN_IP4_CONFIG (NMC_GENERIC_INFO_TYPE_IP4_CONFIG_GATEWAY, "GATEWAY"),
_METAGEN_IP4_CONFIG (NMC_GENERIC_INFO_TYPE_IP4_CONFIG_ROUTE, "ROUTE"),
_METAGEN_IP4_CONFIG (NMC_GENERIC_INFO_TYPE_IP4_CONFIG_DNS, "DNS"),
_METAGEN_IP4_CONFIG (NMC_GENERIC_INFO_TYPE_IP4_CONFIG_DOMAIN, "DOMAIN"),
_METAGEN_IP4_CONFIG (NMC_GENERIC_INFO_TYPE_IP4_CONFIG_WINS, "WINS"),
};
static const NmcMetaGenericInfo *const metagen_ip4_config_group[] = {
NMC_META_GENERIC_WITH_NESTED ("IP4", metagen_ip4_config, .name_header = N_("GROUP")),
NULL,
};
const NmcMetaGenericInfo *const metagen_ip6_config[_NMC_GENERIC_INFO_TYPE_IP6_CONFIG_NUM + 1] = {
#define _METAGEN_IP6_CONFIG(type, name) \
[type] = NMC_META_GENERIC(name, .info_type = type, .get_fcn = _metagen_ip6_config_get_fcn)
_METAGEN_IP6_CONFIG (NMC_GENERIC_INFO_TYPE_IP6_CONFIG_ADDRESS, "ADDRESS"),
_METAGEN_IP6_CONFIG (NMC_GENERIC_INFO_TYPE_IP6_CONFIG_GATEWAY, "GATEWAY"),
_METAGEN_IP6_CONFIG (NMC_GENERIC_INFO_TYPE_IP6_CONFIG_ROUTE, "ROUTE"),
_METAGEN_IP6_CONFIG (NMC_GENERIC_INFO_TYPE_IP6_CONFIG_DNS, "DNS"),
_METAGEN_IP6_CONFIG (NMC_GENERIC_INFO_TYPE_IP6_CONFIG_DOMAIN, "DOMAIN"),
};
static const NmcMetaGenericInfo *const metagen_ip6_config_group[] = {
NMC_META_GENERIC_WITH_NESTED ("IP6", metagen_ip6_config, .name_header = N_("GROUP")),
NULL,
};
/*****************************************************************************/
const NmcMetaGenericInfo *const nmc_fields_dhcp4_config[] = {
NMC_META_GENERIC ("GROUP"), /* 0 */
NMC_META_GENERIC ("OPTION"), /* 1 */
NULL,
};
const NmcMetaGenericInfo *const nmc_fields_ip6_config[] = {
NMC_META_GENERIC ("GROUP"), /* 0 */
NMC_META_GENERIC ("ADDRESS"), /* 1 */
NMC_META_GENERIC ("GATEWAY"), /* 2 */
NMC_META_GENERIC ("ROUTE"), /* 3 */
NMC_META_GENERIC ("DNS"), /* 4 */
NMC_META_GENERIC ("DOMAIN"), /* 5 */
NULL,
};
const NmcMetaGenericInfo *const nmc_fields_dhcp6_config[] = {
NMC_META_GENERIC ("GROUP"), /* 0 */
NMC_META_GENERIC ("OPTION"), /* 1 */
NULL,
};
gboolean
print_ip4_config (NMIPConfig *cfg4,
const NmcConfig *nmc_config,
const char *one_field)
{
gs_free_error GError *error = NULL;
gs_free char *field_str = NULL;
if (cfg4 == NULL)
return FALSE;
if (one_field)
field_str = g_strdup_printf ("IP4.%s", one_field);
if (!nmc_print (nmc_config,
(gpointer[]) { cfg4, NULL },
NULL,
(const NMMetaAbstractInfo *const*) metagen_ip4_config_group,
field_str,
&error)) {
return FALSE;
}
return TRUE;
}
gboolean
print_ip6_config (NMIPConfig *cfg6,
const NmcConfig *nmc_config,
const char *group_prefix,
const char *one_field)
{
gs_free_error GError *error = NULL;
gs_free char *field_str = NULL;
if (cfg6 == NULL)
return FALSE;
if (one_field)
field_str = g_strdup_printf ("IP6.%s", one_field);
if (!nmc_print (nmc_config,
(gpointer[]) { cfg6, NULL },
NULL,
(const NMMetaAbstractInfo *const*) metagen_ip6_config_group,
field_str,
&error)) {
return FALSE;
}
return TRUE;
}
gboolean
print_dhcp4_config (NMDhcpConfig *dhcp4,
const NmcConfig *nmc_config,
const char *group_prefix,
const char *one_field)
{
GHashTable *table;
const NMMetaAbstractInfo *const*tmpl;
NmcOutputField *arr;
if (dhcp4 == NULL)
return FALSE;
table = nm_dhcp_config_get_options (dhcp4);
if (table) {
GHashTableIter table_iter;
gpointer key, value;
char **options_arr = NULL;
int i = 0;
NMC_OUTPUT_DATA_DEFINE_SCOPED (out);
tmpl = (const NMMetaAbstractInfo *const*) nmc_fields_dhcp4_config;
out_indices = parse_output_fields (one_field,
tmpl, FALSE, NULL, NULL);
arr = nmc_dup_fields_array (tmpl, NMC_OF_FLAG_FIELD_NAMES);
g_ptr_array_add (out.output_data, arr);
options_arr = g_new (char *, g_hash_table_size (table) + 1);
g_hash_table_iter_init (&table_iter, table);
while (g_hash_table_iter_next (&table_iter, &key, &value))
options_arr[i++] = g_strdup_printf ("%s = %s", (char *) key, (char *) value);
options_arr[i] = NULL;
arr = nmc_dup_fields_array (tmpl, NMC_OF_FLAG_SECTION_PREFIX);
set_val_strc (arr, 0, group_prefix);
set_val_arr (arr, 1, options_arr);
g_ptr_array_add (out.output_data, arr);
print_data_prepare_width (out.output_data);
print_data (nmc_config, out_indices, NULL, 0, &out);
return TRUE;
}
return FALSE;
}
gboolean
print_dhcp6_config (NMDhcpConfig *dhcp6,
const NmcConfig *nmc_config,
const char *group_prefix,
const char *one_field)
{
GHashTable *table;
const NMMetaAbstractInfo *const*tmpl;
NmcOutputField *arr;
if (dhcp6 == NULL)
return FALSE;
table = nm_dhcp_config_get_options (dhcp6);
if (table) {
GHashTableIter table_iter;
gpointer key, value;
char **options_arr = NULL;
int i = 0;
NMC_OUTPUT_DATA_DEFINE_SCOPED (out);
tmpl = (const NMMetaAbstractInfo *const*) nmc_fields_dhcp6_config;
out_indices = parse_output_fields (one_field,
tmpl, FALSE, NULL, NULL);
arr = nmc_dup_fields_array (tmpl, NMC_OF_FLAG_FIELD_NAMES);
g_ptr_array_add (out.output_data, arr);
options_arr = g_new (char *, g_hash_table_size (table) + 1);
g_hash_table_iter_init (&table_iter, table);
while (g_hash_table_iter_next (&table_iter, &key, &value))
options_arr[i++] = g_strdup_printf ("%s = %s", (char *) key, (char *) value);
options_arr[i] = NULL;
arr = nmc_dup_fields_array (tmpl, NMC_OF_FLAG_SECTION_PREFIX);
set_val_strc (arr, 0, group_prefix);
set_val_arr (arr, 1, options_arr);
g_ptr_array_add (out.output_data, arr);
print_data_prepare_width (out.output_data);
print_data (nmc_config, out_indices, NULL, 0, &out);
return TRUE;
}
return FALSE;
}
/*
* nmc_find_connection:
* @connections: array of NMConnections to search in
* @filter_type: "id", "uuid", "path" or %NULL
* @filter_val: connection to find (connection name, UUID or path)
* @start: where to start in @list. The location is updated so that the function
* can be called multiple times (for connections with the same name).
* @complete: print possible completions
*
* Find a connection in @list according to @filter_val. @filter_type determines
* what property is used for comparison. When @filter_type is NULL, compare
* @filter_val against all types. Otherwise, only compare against the specified
* type. If 'path' filter type is specified, comparison against numeric index
* (in addition to the whole path) is allowed.
*
* Returns: found connection, or %NULL
*/
NMConnection *
nmc_find_connection (const GPtrArray *connections,
const char *filter_type,
const char *filter_val,
int *start,
gboolean complete)
{
NMConnection *connection;
NMConnection *found = NULL;
int i;
const char *id;
const char *uuid;
const char *path, *path_num;
for (i = start ? *start : 0; i < connections->len; i++) {
connection = NM_CONNECTION (connections->pdata[i]);
id = nm_connection_get_id (connection);
uuid = nm_connection_get_uuid (connection);
path = nm_connection_get_path (connection);
path_num = path ? strrchr (path, '/') + 1 : NULL;
/* When filter_type is NULL, compare connection ID (filter_val)
* against all types. Otherwise, only compare against the specific
* type. If 'path' filter type is specified, comparison against
* numeric index (in addition to the whole path) is allowed.
*/
if (!filter_type || strcmp (filter_type, "id") == 0) {
if (complete)
nmc_complete_strings (filter_val, id, NULL);
if (strcmp (filter_val, id) == 0)
goto found;
}
if (!filter_type || strcmp (filter_type, "uuid") == 0) {
if (complete && (filter_type || *filter_val))
nmc_complete_strings (filter_val, uuid, NULL);
if (strcmp (filter_val, uuid) == 0)
goto found;
}
if (!filter_type || strcmp (filter_type, "path") == 0) {
if (complete && (filter_type || *filter_val))
nmc_complete_strings (filter_val, path, filter_type ? path_num : NULL, NULL);
if (g_strcmp0 (filter_val, path) == 0 || (filter_type && g_strcmp0 (filter_val, path_num) == 0))
goto found;
}
continue;
found:
if (!start)
return connection;
if (found) {
*start = i;
return found;
}
found = connection;
}
if (start)
*start = 0;
return found;
}
static gboolean
vpn_openconnect_get_secrets (NMConnection *connection, GPtrArray *secrets)
{
GError *error = NULL;
NMSettingVpn *s_vpn;
const char *gw, *port;
gs_free char *cookie = NULL;
gs_free char *gateway = NULL;
gs_free char *gwcert = NULL;
int status = 0;
int i;
gboolean ret;
if (!connection)
return FALSE;
if (!nm_connection_is_type (connection, NM_SETTING_VPN_SETTING_NAME))
return FALSE;
s_vpn = nm_connection_get_setting_vpn (connection);
if (!nm_streq0 (nm_setting_vpn_get_service_type (s_vpn), NM_SECRET_AGENT_VPN_TYPE_OPENCONNECT))
return FALSE;
/* Get gateway and port */
gw = nm_setting_vpn_get_data_item (s_vpn, "gateway");
port = gw ? strrchr (gw, ':') : NULL;
/* Interactively authenticate to OpenConnect server and get secrets */
ret = nm_vpn_openconnect_authenticate_helper (gw, &cookie, &gateway, &gwcert, &status, &error);
if (!ret) {
g_printerr (_("Error: openconnect failed: %s\n"), error->message);
g_clear_error (&error);
return FALSE;
}
if (WIFEXITED (status)) {
if (WEXITSTATUS (status) != 0)
g_printerr (_("Error: openconnect failed with status %d\n"), WEXITSTATUS (status));
} else if (WIFSIGNALED (status))
g_printerr (_("Error: openconnect failed with signal %d\n"), WTERMSIG (status));
/* Append port to the host value */
if (gateway && port) {
gs_free char *tmp = gateway;
gateway = g_strdup_printf ("%s%s", tmp, port);
}
/* Fill secrets to the array */
for (i = 0; i < secrets->len; i++) {
NMSecretAgentSimpleSecret *secret = secrets->pdata[i];
if (secret->secret_type != NM_SECRET_AGENT_SECRET_TYPE_VPN_SECRET)
continue;
if (!nm_streq0 (secret->vpn_type, NM_SECRET_AGENT_VPN_TYPE_OPENCONNECT))
continue;
if (nm_streq0 (secret->entry_id, NM_SECRET_AGENT_ENTRY_ID_PREFX_VPN_SECRET "cookie")) {
g_free (secret->value);
secret->value = g_steal_pointer (&cookie);
} else if (nm_streq0 (secret->entry_id, NM_SECRET_AGENT_ENTRY_ID_PREFX_VPN_SECRET "gateway")) {
g_free (secret->value);
secret->value = g_steal_pointer (&gateway);
} else if (nm_streq0 (secret->entry_id, NM_SECRET_AGENT_ENTRY_ID_PREFX_VPN_SECRET "gwcert")) {
g_free (secret->value);
secret->value = g_steal_pointer (&gwcert);
}
}
return TRUE;
}
static gboolean
get_secrets_from_user (const char *request_id,
const char *title,
const char *msg,
NMConnection *connection,
gboolean ask,
gboolean echo_on,
GHashTable *pwds_hash,
GPtrArray *secrets)
{
int i;
/* Check if there is a VPN OpenConnect secret to ask for */
if (ask)
vpn_openconnect_get_secrets (connection, secrets);
for (i = 0; i < secrets->len; i++) {
NMSecretAgentSimpleSecret *secret = secrets->pdata[i];
char *pwd = NULL;
/* First try to find the password in provided passwords file,
* then ask user. */
if (pwds_hash && (pwd = g_hash_table_lookup (pwds_hash, secret->entry_id))) {
pwd = g_strdup (pwd);
} else {
if (ask) {
if (secret->value) {
if (!g_strcmp0 (secret->vpn_type, NM_DBUS_INTERFACE ".openconnect")) {
/* Do not present and ask user for openconnect secrets, we already have them */
continue;
} else {
/* Prefill the password if we have it. */
rl_startup_hook = nmc_rl_set_deftext;
nmc_rl_pre_input_deftext = g_strdup (secret->value);
}
}
if (msg)
g_print ("%s\n", msg);
pwd = nmc_readline_echo (secret->is_secret
? echo_on
: TRUE,
"%s (%s): ", secret->pretty_name, secret->entry_id);
if (!pwd)
pwd = g_strdup ("");
} else {
if (msg)
g_print ("%s\n", msg);
g_printerr (_("Warning: password for '%s' not given in 'passwd-file' "
"and nmcli cannot ask without '--ask' option.\n"),
secret->entry_id);
}
}
/* No password provided, cancel the secrets. */
if (!pwd)
return FALSE;
g_free (secret->value);
secret->value = pwd;
}
return TRUE;
}
/**
* nmc_secrets_requested:
* @agent: the #NMSecretAgentSimple
* @request_id: request ID, to eventually pass to
* nm_secret_agent_simple_response()
* @title: a title for the password request
* @msg: a prompt message for the password request
* @secrets: (element-type #NMSecretAgentSimpleSecret): array of secrets
* being requested.
* @user_data: user data passed to the function
*
* This function is used as a callback for "request-secrets" signal of
* NMSecretAgentSimpleSecret.
*/
void
nmc_secrets_requested (NMSecretAgentSimple *agent,
const char *request_id,
const char *title,
const char *msg,
GPtrArray *secrets,
gpointer user_data)
{
NmCli *nmc = (NmCli *) user_data;
NMConnection *connection = NULL;
char *path, *p;
gboolean success = FALSE;
const GPtrArray *connections;
if (nmc->nmc_config.print_output == NMC_PRINT_PRETTY)
nmc_terminal_erase_line ();
/* Find the connection for the request */
path = g_strdup (request_id);
if (path) {
p = strrchr (path, '/');
if (p)
*p = '\0';
connections = nm_client_get_connections (nmc->client);
connection = nmc_find_connection (connections, "path", path, NULL, FALSE);
g_free (path);
}
success = get_secrets_from_user (request_id, title, msg, connection, nmc->nmc_config.in_editor || nmc->ask,
nmc->nmc_config.show_secrets, nmc->pwds_hash, secrets);
if (success)
nm_secret_agent_simple_response (agent, request_id, secrets);
else {
/* Unregister our secret agent on failure, so that another agent
* may be tried */
if (nmc->secret_agent) {
nm_secret_agent_old_unregister (nmc->secret_agent, NULL, NULL);
g_clear_object (&nmc->secret_agent);
}
}
}
char *
nmc_unique_connection_name (const GPtrArray *connections, const char *try_name)
{
NMConnection *connection;
const char *name;
char *new_name;
unsigned num = 1;
int i = 0;
new_name = g_strdup (try_name);
while (i < connections->len) {
connection = NM_CONNECTION (connections->pdata[i]);
name = nm_connection_get_id (connection);
if (g_strcmp0 (new_name, name) == 0) {
g_free (new_name);
new_name = g_strdup_printf ("%s-%d", try_name, num++);
i = 0;
} else
i++;
}
return new_name;
}
/* readline state variables */
static gboolean nmcli_in_readline = FALSE;
static gboolean rl_got_line;
static char *rl_string;
/**
* nmc_cleanup_readline:
*
* Cleanup readline when nmcli is terminated with a signal.
* It makes sure the terminal is not garbled.
*/
void
nmc_cleanup_readline (void)
{
rl_free_line_state ();
rl_cleanup_after_signal ();
}
gboolean
nmc_get_in_readline (void)
{
return nmcli_in_readline;
}
void
nmc_set_in_readline (gboolean in_readline)
{
nmcli_in_readline = in_readline;
}
static void
readline_cb (char *line)
{
rl_got_line = TRUE;
rl_string = line;
rl_callback_handler_remove ();
}
static gboolean
stdin_ready_cb (GIOChannel * io, GIOCondition condition, gpointer data)
{
rl_callback_read_char ();
return TRUE;
}
static char *
nmc_readline_helper (const char *prompt)
{
GIOChannel *io = NULL;
guint io_watch_id;
nmc_set_in_readline (TRUE);
io = g_io_channel_unix_new (STDIN_FILENO);
io_watch_id = g_io_add_watch (io, G_IO_IN, stdin_ready_cb, NULL);
g_io_channel_unref (io);
read_again:
rl_string = NULL;
rl_got_line = FALSE;
rl_callback_handler_install (prompt, readline_cb);
while ( !rl_got_line
&& g_main_loop_is_running (loop)
&& !nmc_seen_sigint ())
g_main_context_iteration (NULL, TRUE);
/* If Ctrl-C was detected, complete the line */
if (nmc_seen_sigint ()) {
rl_echo_signal_char (SIGINT);
if (!rl_got_line) {
rl_stuff_char ('\n');
rl_callback_read_char ();
}
}
/* Add string to the history */
if (rl_string && *rl_string)
add_history (rl_string);
if (nmc_seen_sigint ()) {
/* Ctrl-C */
nmc_clear_sigint ();
if ( nm_cli.nmc_config.in_editor
|| (rl_string && *rl_string)) {
/* In editor, or the line is not empty */
/* Call readline again to get new prompt (repeat) */
g_free (rl_string);
goto read_again;
} else {
/* Not in editor and line is empty, exit */
nmc_exit ();
}
} else if (!rl_string) {
/* Ctrl-D, exit */
nmc_exit ();
}
/* Return NULL, not empty string */
if (rl_string && *rl_string == '\0') {
g_free (rl_string);
rl_string = NULL;
}
g_source_remove (io_watch_id);
nmc_set_in_readline (FALSE);
return rl_string;
}
/**
* nmc_readline:
* @prompt_fmt: prompt to print (telling user what to enter). It is standard
* printf() format string
* @...: a list of arguments according to the @prompt_fmt format string
*
* Wrapper around libreadline's readline() function.
* If user pressed Ctrl-C, readline() is called again (if not in editor and
* line is empty, nmcli will quit).
* If user pressed Ctrl-D on empty line, nmcli will quit.
*
* Returns: the user provided string. In case the user entered empty string,
* this function returns NULL.
*/
char *
nmc_readline (const char *prompt_fmt, ...)
{
va_list args;
char *prompt, *str;
va_start (args, prompt_fmt);
prompt = g_strdup_vprintf (prompt_fmt, args);
va_end (args);
str = nmc_readline_helper (prompt);
g_free (prompt);
return str;
}
static void
nmc_secret_redisplay (void)
{
int save_point = rl_point;
int save_end = rl_end;
char *save_line_buffer = rl_line_buffer;
const char *subst = nmc_password_subst_char ();
int subst_len = strlen (subst);
int i;
rl_point = g_utf8_strlen (save_line_buffer, save_point) * subst_len;
rl_end = g_utf8_strlen (rl_line_buffer, -1) * subst_len;
rl_line_buffer = g_slice_alloc (rl_end + 1);
for (i = 0; i + subst_len <= rl_end; i += subst_len)
memcpy (&rl_line_buffer[i], subst, subst_len);
rl_line_buffer[i] = '\0';
rl_redisplay ();
g_slice_free1 (rl_end + 1, rl_line_buffer);
rl_line_buffer = save_line_buffer;
rl_end = save_end;
rl_point = save_point;
}
/**
* nmc_readline_echo:
*
* The same as nmc_readline() except it can disable echoing of input characters if @echo_on is %FALSE.
* nmc_readline(TRUE, ...) == nmc_readline(...)
*/
char *
nmc_readline_echo (gboolean echo_on, const char *prompt_fmt, ...)
{
va_list args;
char *prompt, *str;
HISTORY_STATE *saved_history;
HISTORY_STATE passwd_history = { 0, };
va_start (args, prompt_fmt);
prompt = g_strdup_vprintf (prompt_fmt, args);
va_end (args);
/* Hide the actual password */
if (!echo_on) {
saved_history = history_get_history_state ();
history_set_history_state (&passwd_history);
rl_redisplay_function = nmc_secret_redisplay;
}
str = nmc_readline_helper (prompt);
g_free (prompt);
/* Restore the non-hiding behavior */
if (!echo_on) {
rl_redisplay_function = rl_redisplay;
history_set_history_state (saved_history);
}
return str;
}
/**
* nmc_rl_gen_func_basic:
* @text: text to complete
* @state: readline state; says whether start from scratch (state == 0)
* @words: strings for completion
*
* Basic function generating list of completion strings for readline.
* See e.g. http://cnswww.cns.cwru.edu/php/chet/readline/readline.html#SEC49
*/
char *
nmc_rl_gen_func_basic (const char *text, int state, const char *const*words)
{
static int list_idx, len;
const char *name;
if (!state) {
list_idx = 0;
len = strlen (text);
}
/* Return the next name which partially matches one from the 'words' list. */
while ((name = words[list_idx])) {
list_idx++;
if (strncmp (name, text, len) == 0)
return g_strdup (name);
}
return NULL;
}
static struct {
bool initialized;
guint idx;
char **values;
} _rl_compentry_func_wrap = { 0 };
static char *
_rl_compentry_func_wrap_fcn (const char *text, int state)
{
g_return_val_if_fail (_rl_compentry_func_wrap.initialized, NULL);
while ( _rl_compentry_func_wrap.values
&& _rl_compentry_func_wrap.values[_rl_compentry_func_wrap.idx]
&& !g_str_has_prefix (_rl_compentry_func_wrap.values[_rl_compentry_func_wrap.idx], text))
_rl_compentry_func_wrap.idx++;
if ( !_rl_compentry_func_wrap.values
|| !_rl_compentry_func_wrap.values[_rl_compentry_func_wrap.idx]) {
g_strfreev (_rl_compentry_func_wrap.values);
_rl_compentry_func_wrap.values = NULL;
_rl_compentry_func_wrap.initialized = FALSE;
return NULL;
}
return g_strdup (_rl_compentry_func_wrap.values[_rl_compentry_func_wrap.idx++]);
}
NmcCompEntryFunc
nmc_rl_compentry_func_wrap (const char *const*values)
{
g_strfreev (_rl_compentry_func_wrap.values);
_rl_compentry_func_wrap.values = g_strdupv ((char **) values);
_rl_compentry_func_wrap.idx = 0;
_rl_compentry_func_wrap.initialized = TRUE;
return _rl_compentry_func_wrap_fcn;
}
char *
nmc_rl_gen_func_ifnames (const char *text, int state)
{
int i;
const GPtrArray *devices;
const char **ifnames;
char *ret;
devices = nm_client_get_devices (nm_cli.client);
if (devices->len == 0)
return NULL;
ifnames = g_new (const char *, devices->len + 1);
for (i = 0; i < devices->len; i++) {
NMDevice *dev = g_ptr_array_index (devices, i);
const char *ifname = nm_device_get_iface (dev);
ifnames[i] = ifname;
}
ifnames[i] = NULL;
ret = nmc_rl_gen_func_basic (text, state, ifnames);
g_free (ifnames);
return ret;
}
/* for pre-filling a string to readline prompt */
char *nmc_rl_pre_input_deftext;
int
nmc_rl_set_deftext (void)
{
if (nmc_rl_pre_input_deftext && rl_startup_hook) {
rl_insert_text (nmc_rl_pre_input_deftext);
g_free (nmc_rl_pre_input_deftext);
nmc_rl_pre_input_deftext = NULL;
rl_startup_hook = NULL;
}
return 0;
}
/**
* nmc_parse_lldp_capabilities:
* @value: the capabilities value
*
* Parses LLDP capabilities flags
*
* Returns: a newly allocated string containing capabilities names separated by commas.
*/
char *
nmc_parse_lldp_capabilities (guint value)
{
/* IEEE Std 802.1AB-2009 - Table 8.4 */
const char *names[] = { "other", "repeater", "mac-bridge", "wlan-access-point",
"router", "telephone", "docsis-cable-device", "station-only",
"c-vlan-component", "s-vlan-component", "tpmr" };
gboolean first = TRUE;
GString *str;
int i;
if (!value)
return g_strdup ("none");
str = g_string_new ("");
for (i = 0; i < G_N_ELEMENTS (names); i++) {
if (value & (1 << i)) {
if (!first)
g_string_append_c (str, ',');
first = FALSE;
value &= ~(1 << i);
g_string_append (str, names[i]);
}
}
if (value) {
if (!first)
g_string_append_c (str, ',');
g_string_append (str, "reserved");
}
return g_string_free (str, FALSE);
}
static void
command_done (GObject *object, GAsyncResult *res, gpointer user_data)
{
GSimpleAsyncResult *simple = (GSimpleAsyncResult *)res;
NmCli *nmc = user_data;
GError *error = NULL;
if (g_simple_async_result_propagate_error (simple, &error)) {
nmc->return_value = error->code;
g_string_assign (nmc->return_text, error->message);
g_error_free (error);
}
if (!nmc->should_wait)
g_main_loop_quit (loop);
}
typedef struct {
NmCli *nmc;
const NMCCommand *cmd;
int argc;
char **argv;
GSimpleAsyncResult *simple;
} CmdCall;
static void
call_cmd (NmCli *nmc, GSimpleAsyncResult *simple, const NMCCommand *cmd, int argc, char **argv);
static void
got_client (GObject *source_object, GAsyncResult *res, gpointer user_data)
{
GError *error = NULL;
CmdCall *call = user_data;
NmCli *nmc = call->nmc;
nmc->should_wait--;
nmc->client = nm_client_new_finish (res, &error);
if (!nmc->client) {
g_simple_async_result_set_error (call->simple, NMCLI_ERROR, NMC_RESULT_ERROR_UNKNOWN,
_("Error: Could not create NMClient object: %s."), error->message);
g_error_free (error);
g_simple_async_result_complete (call->simple);
} else {
call_cmd (nmc, call->simple, call->cmd, call->argc, call->argv);
}
g_slice_free (CmdCall, call);
}
static void
call_cmd (NmCli *nmc, GSimpleAsyncResult *simple, const NMCCommand *cmd, int argc, char **argv)
{
CmdCall *call;
if (nmc->client || !cmd->needs_client) {
/* Check whether NetworkManager is running */
if (cmd->needs_nm_running && !nm_client_get_nm_running (nmc->client)) {
g_simple_async_result_set_error (simple, NMCLI_ERROR, NMC_RESULT_ERROR_NM_NOT_RUNNING,
_("Error: NetworkManager is not running."));
} else
nmc->return_value = cmd->func (nmc, argc, argv);
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
} else {
nmc->should_wait++;
call = g_slice_new0 (CmdCall);
call->nmc = nmc;
call->cmd = cmd;
call->argc = argc;
call->argv = argv;
call->simple = simple;
nm_client_new_async (NULL, got_client, call);
}
}
static void
nmc_complete_help (const char *prefix)
{
nmc_complete_strings (prefix, "help", NULL);
if (*prefix == '-')
nmc_complete_strings (prefix, "-help", "--help", NULL);
}
/**
* nmc_do_cmd:
* @nmc: Client instance
* @cmds: Command table
* @cmd: Command
* @argc: Argument count
* @argv: Arguments vector. Must be a global variable.
*
* Picks the right callback to handle command from the command table.
* If --help argument follows and the usage callback is specified for the command
* it calls the usage callback.
*
* The command table is terminated with a %NULL command. The terminating
* entry's handlers are called if the command is empty.
*
* The argument vector needs to be a pointer to the global arguments vector that is
* never freed, since the command handler will be called asynchronously and there's
* no callback to free the memory in (for simplicity).
*/
void
nmc_do_cmd (NmCli *nmc, const NMCCommand cmds[], const char *cmd, int argc, char **argv)
{
const NMCCommand *c;
GSimpleAsyncResult *simple;
simple = g_simple_async_result_new (NULL,
command_done,
nmc,
nmc_do_cmd);
if (argc == 0 && nmc->complete) {
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
return;
}
if (argc == 1 && nmc->complete) {
for (c = cmds; c->cmd; ++c) {
if (!*cmd || matches (cmd, c->cmd))
g_print ("%s\n", c->cmd);
}
nmc_complete_help (cmd);
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
return;
}
for (c = cmds; c->cmd; ++c) {
if (cmd && matches (cmd, c->cmd))
break;
}
if (c->cmd) {
/* A valid command was specified. */
if (c->usage && argc == 2 && nmc->complete)
nmc_complete_help (*(argv+1));
if (c->usage && nmc_arg_is_help (*(argv+1))) {
if (!nmc->complete)
c->usage ();
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
} else {
call_cmd (nmc, simple, c, argc, argv);
}
} else if (cmd) {
/* Not a known command. */
if (nmc_arg_is_help (cmd) && c->usage) {
c->usage ();
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
} else {
g_simple_async_result_set_error (simple, NMCLI_ERROR, NMC_RESULT_ERROR_USER_INPUT,
_("Error: argument '%s' not understood. Try passing --help instead."), cmd);
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
}
} else if (c->func) {
/* No command, run the default handler. */
call_cmd (nmc, simple, c, argc, argv);
} else {
/* No command and no default handler. */
g_simple_async_result_set_error (simple, NMCLI_ERROR, NMC_RESULT_ERROR_USER_INPUT,
_("Error: missing argument. Try passing --help."));
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
}
}
/**
* nmc_complete_strings:
* @prefix: a string to match
* @...: a %NULL-terminated list of candidate strings
*
* Prints all the matching candidates for completion. Useful when there's
* no better way to suggest completion other than a hardcoded string list.
*/
void
nmc_complete_strings (const char *prefix, ...)
{
va_list args;
const char *candidate;
va_start (args, prefix);
while ((candidate = va_arg (args, const char *))) {
if (!*prefix || matches (prefix, candidate))
g_print ("%s\n", candidate);
}
va_end (args);
}
/**
* nmc_complete_bool:
* @prefix: a string to match
* @...: a %NULL-terminated list of candidate strings
*
* Prints all the matching possible boolean values for completion.
*/
void
nmc_complete_bool (const char *prefix)
{
nmc_complete_strings (prefix, "true", "yes", "on",
"false", "no", "off", NULL);
}
/**
* nmc_error_get_simple_message:
* @error: a GError
*
* Returns a simplified message for some errors hard to understand.
*/
const char *
nmc_error_get_simple_message (GError *error)
{
/* Return a clear message instead of the obscure D-Bus policy error */
if (g_error_matches (error, G_DBUS_ERROR, G_DBUS_ERROR_ACCESS_DENIED))
return _("access denied");
else
return error->message;
}
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