hostap/wpa_supplicant/config_file.c
Ilan Peer 1a471ff081 P2P: Move a GO from its operating frequency
Upon any change in the currently used channels evaluate if a GO should
move to a different operating frequency, where the possible scenarios:

1. The frequency that the GO is currently using is no longer valid,
   due to regulatory reasons, and thus the GO must be moved to some
   other frequency.
2. Due to Multi Concurrent Channel (MCC) policy considerations, it would
   be preferable, based on configuration settings, to prefer Same
   Channel Mode (SCM) over concurrent operation in multiple channels.
   The supported policies:

   - prefer SCM: prefer moving the GO to a frequency used by some other
     interface.
   - prefer SCM if Peer supports: prefer moving the GO to a frequency
     used by some other station interface iff the other station
     interface is using a frequency that is common between the local and
     the peer device (based on the GO Negotiation/Invitation signaling).
   - Stay on the current frequency.

Currently, the GO transition to another frequency is handled by a
complete tear down and re-setup of the GO. Still need to add CSA flow to
the considerations.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
2015-08-04 00:14:41 +03:00

1385 lines
35 KiB
C

/*
* WPA Supplicant / Configuration backend: text file
* Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*
* This file implements a configuration backend for text files. All the
* configuration information is stored in a text file that uses a format
* described in the sample configuration file, wpa_supplicant.conf.
*/
#include "includes.h"
#ifdef ANDROID
#include <sys/stat.h>
#endif /* ANDROID */
#include "common.h"
#include "config.h"
#include "base64.h"
#include "uuid.h"
#include "p2p/p2p.h"
#include "eap_peer/eap_methods.h"
#include "eap_peer/eap.h"
static int newline_terminated(const char *buf, size_t buflen)
{
size_t len = os_strlen(buf);
if (len == 0)
return 0;
if (len == buflen - 1 && buf[buflen - 1] != '\r' &&
buf[len - 1] != '\n')
return 0;
return 1;
}
static void skip_line_end(FILE *stream)
{
char buf[100];
while (fgets(buf, sizeof(buf), stream)) {
buf[sizeof(buf) - 1] = '\0';
if (newline_terminated(buf, sizeof(buf)))
return;
}
}
/**
* wpa_config_get_line - Read the next configuration file line
* @s: Buffer for the line
* @size: The buffer length
* @stream: File stream to read from
* @line: Pointer to a variable storing the file line number
* @_pos: Buffer for the pointer to the beginning of data on the text line or
* %NULL if not needed (returned value used instead)
* Returns: Pointer to the beginning of data on the text line or %NULL if no
* more text lines are available.
*
* This function reads the next non-empty line from the configuration file and
* removes comments. The returned string is guaranteed to be null-terminated.
*/
static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line,
char **_pos)
{
char *pos, *end, *sstart;
while (fgets(s, size, stream)) {
(*line)++;
s[size - 1] = '\0';
if (!newline_terminated(s, size)) {
/*
* The line was truncated - skip rest of it to avoid
* confusing error messages.
*/
wpa_printf(MSG_INFO, "Long line in configuration file "
"truncated");
skip_line_end(stream);
}
pos = s;
/* Skip white space from the beginning of line. */
while (*pos == ' ' || *pos == '\t' || *pos == '\r')
pos++;
/* Skip comment lines and empty lines */
if (*pos == '#' || *pos == '\n' || *pos == '\0')
continue;
/*
* Remove # comments unless they are within a double quoted
* string.
*/
sstart = os_strchr(pos, '"');
if (sstart)
sstart = os_strrchr(sstart + 1, '"');
if (!sstart)
sstart = pos;
end = os_strchr(sstart, '#');
if (end)
*end-- = '\0';
else
end = pos + os_strlen(pos) - 1;
/* Remove trailing white space. */
while (end > pos &&
(*end == '\n' || *end == ' ' || *end == '\t' ||
*end == '\r'))
*end-- = '\0';
if (*pos == '\0')
continue;
if (_pos)
*_pos = pos;
return pos;
}
if (_pos)
*_pos = NULL;
return NULL;
}
static int wpa_config_validate_network(struct wpa_ssid *ssid, int line)
{
int errors = 0;
if (ssid->passphrase) {
if (ssid->psk_set) {
wpa_printf(MSG_ERROR, "Line %d: both PSK and "
"passphrase configured.", line);
errors++;
}
wpa_config_update_psk(ssid);
}
if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
!(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
!(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
/* Group cipher cannot be stronger than the pairwise cipher. */
wpa_printf(MSG_DEBUG, "Line %d: removed CCMP from group cipher"
" list since it was not allowed for pairwise "
"cipher", line);
ssid->group_cipher &= ~WPA_CIPHER_CCMP;
}
if (ssid->mode == WPAS_MODE_MESH &&
(ssid->key_mgmt != WPA_KEY_MGMT_NONE &&
ssid->key_mgmt != WPA_KEY_MGMT_SAE)) {
wpa_printf(MSG_ERROR,
"Line %d: key_mgmt for mesh network should be open or SAE",
line);
errors++;
}
return errors;
}
static struct wpa_ssid * wpa_config_read_network(FILE *f, int *line, int id)
{
struct wpa_ssid *ssid;
int errors = 0, end = 0;
char buf[2000], *pos, *pos2;
wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new network block",
*line);
ssid = os_zalloc(sizeof(*ssid));
if (ssid == NULL)
return NULL;
dl_list_init(&ssid->psk_list);
ssid->id = id;
wpa_config_set_network_defaults(ssid);
while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
if (os_strcmp(pos, "}") == 0) {
end = 1;
break;
}
pos2 = os_strchr(pos, '=');
if (pos2 == NULL) {
wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line "
"'%s'.", *line, pos);
errors++;
continue;
}
*pos2++ = '\0';
if (*pos2 == '"') {
if (os_strchr(pos2 + 1, '"') == NULL) {
wpa_printf(MSG_ERROR, "Line %d: invalid "
"quotation '%s'.", *line, pos2);
errors++;
continue;
}
}
if (wpa_config_set(ssid, pos, pos2, *line) < 0)
errors++;
}
if (!end) {
wpa_printf(MSG_ERROR, "Line %d: network block was not "
"terminated properly.", *line);
errors++;
}
errors += wpa_config_validate_network(ssid, *line);
if (errors) {
wpa_config_free_ssid(ssid);
ssid = NULL;
}
return ssid;
}
static struct wpa_cred * wpa_config_read_cred(FILE *f, int *line, int id)
{
struct wpa_cred *cred;
int errors = 0, end = 0;
char buf[256], *pos, *pos2;
wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new cred block", *line);
cred = os_zalloc(sizeof(*cred));
if (cred == NULL)
return NULL;
cred->id = id;
cred->sim_num = DEFAULT_USER_SELECTED_SIM;
while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
if (os_strcmp(pos, "}") == 0) {
end = 1;
break;
}
pos2 = os_strchr(pos, '=');
if (pos2 == NULL) {
wpa_printf(MSG_ERROR, "Line %d: Invalid cred line "
"'%s'.", *line, pos);
errors++;
continue;
}
*pos2++ = '\0';
if (*pos2 == '"') {
if (os_strchr(pos2 + 1, '"') == NULL) {
wpa_printf(MSG_ERROR, "Line %d: invalid "
"quotation '%s'.", *line, pos2);
errors++;
continue;
}
}
if (wpa_config_set_cred(cred, pos, pos2, *line) < 0)
errors++;
}
if (!end) {
wpa_printf(MSG_ERROR, "Line %d: cred block was not "
"terminated properly.", *line);
errors++;
}
if (errors) {
wpa_config_free_cred(cred);
cred = NULL;
}
return cred;
}
#ifndef CONFIG_NO_CONFIG_BLOBS
static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line,
const char *name)
{
struct wpa_config_blob *blob;
char buf[256], *pos;
unsigned char *encoded = NULL, *nencoded;
int end = 0;
size_t encoded_len = 0, len;
wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'",
*line, name);
while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
if (os_strcmp(pos, "}") == 0) {
end = 1;
break;
}
len = os_strlen(pos);
nencoded = os_realloc(encoded, encoded_len + len);
if (nencoded == NULL) {
wpa_printf(MSG_ERROR, "Line %d: not enough memory for "
"blob", *line);
os_free(encoded);
return NULL;
}
encoded = nencoded;
os_memcpy(encoded + encoded_len, pos, len);
encoded_len += len;
}
if (!end) {
wpa_printf(MSG_ERROR, "Line %d: blob was not terminated "
"properly", *line);
os_free(encoded);
return NULL;
}
blob = os_zalloc(sizeof(*blob));
if (blob == NULL) {
os_free(encoded);
return NULL;
}
blob->name = os_strdup(name);
blob->data = base64_decode(encoded, encoded_len, &blob->len);
os_free(encoded);
if (blob->name == NULL || blob->data == NULL) {
wpa_config_free_blob(blob);
return NULL;
}
return blob;
}
static int wpa_config_process_blob(struct wpa_config *config, FILE *f,
int *line, char *bname)
{
char *name_end;
struct wpa_config_blob *blob;
name_end = os_strchr(bname, '=');
if (name_end == NULL) {
wpa_printf(MSG_ERROR, "Line %d: no blob name terminator",
*line);
return -1;
}
*name_end = '\0';
blob = wpa_config_read_blob(f, line, bname);
if (blob == NULL) {
wpa_printf(MSG_ERROR, "Line %d: failed to read blob %s",
*line, bname);
return -1;
}
wpa_config_set_blob(config, blob);
return 0;
}
#endif /* CONFIG_NO_CONFIG_BLOBS */
struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp)
{
FILE *f;
char buf[512], *pos;
int errors = 0, line = 0;
struct wpa_ssid *ssid, *tail, *head;
struct wpa_cred *cred, *cred_tail, *cred_head;
struct wpa_config *config;
int id = 0;
int cred_id = 0;
if (name == NULL)
return NULL;
if (cfgp)
config = cfgp;
else
config = wpa_config_alloc_empty(NULL, NULL);
if (config == NULL) {
wpa_printf(MSG_ERROR, "Failed to allocate config file "
"structure");
return NULL;
}
tail = head = config->ssid;
while (tail && tail->next)
tail = tail->next;
cred_tail = cred_head = config->cred;
while (cred_tail && cred_tail->next)
cred_tail = cred_tail->next;
wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
f = fopen(name, "r");
if (f == NULL) {
wpa_printf(MSG_ERROR, "Failed to open config file '%s', "
"error: %s", name, strerror(errno));
os_free(config);
return NULL;
}
while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) {
if (os_strcmp(pos, "network={") == 0) {
ssid = wpa_config_read_network(f, &line, id++);
if (ssid == NULL) {
wpa_printf(MSG_ERROR, "Line %d: failed to "
"parse network block.", line);
errors++;
continue;
}
if (head == NULL) {
head = tail = ssid;
} else {
tail->next = ssid;
tail = ssid;
}
if (wpa_config_add_prio_network(config, ssid)) {
wpa_printf(MSG_ERROR, "Line %d: failed to add "
"network block to priority list.",
line);
errors++;
continue;
}
} else if (os_strcmp(pos, "cred={") == 0) {
cred = wpa_config_read_cred(f, &line, cred_id++);
if (cred == NULL) {
wpa_printf(MSG_ERROR, "Line %d: failed to "
"parse cred block.", line);
errors++;
continue;
}
if (cred_head == NULL) {
cred_head = cred_tail = cred;
} else {
cred_tail->next = cred;
cred_tail = cred;
}
#ifndef CONFIG_NO_CONFIG_BLOBS
} else if (os_strncmp(pos, "blob-base64-", 12) == 0) {
if (wpa_config_process_blob(config, f, &line, pos + 12)
< 0) {
wpa_printf(MSG_ERROR, "Line %d: failed to "
"process blob.", line);
errors++;
continue;
}
#endif /* CONFIG_NO_CONFIG_BLOBS */
} else if (wpa_config_process_global(config, pos, line) < 0) {
wpa_printf(MSG_ERROR, "Line %d: Invalid configuration "
"line '%s'.", line, pos);
errors++;
continue;
}
}
fclose(f);
config->ssid = head;
wpa_config_debug_dump_networks(config);
config->cred = cred_head;
#ifndef WPA_IGNORE_CONFIG_ERRORS
if (errors) {
wpa_config_free(config);
config = NULL;
head = NULL;
}
#endif /* WPA_IGNORE_CONFIG_ERRORS */
return config;
}
#ifndef CONFIG_NO_CONFIG_WRITE
static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid)
{
char *value = wpa_config_get(ssid, field);
if (value == NULL)
return;
fprintf(f, "\t%s=%s\n", field, value);
os_free(value);
}
static void write_int(FILE *f, const char *field, int value, int def)
{
if (value == def)
return;
fprintf(f, "\t%s=%d\n", field, value);
}
static void write_bssid(FILE *f, struct wpa_ssid *ssid)
{
char *value = wpa_config_get(ssid, "bssid");
if (value == NULL)
return;
fprintf(f, "\tbssid=%s\n", value);
os_free(value);
}
static void write_psk(FILE *f, struct wpa_ssid *ssid)
{
char *value;
if (ssid->mem_only_psk)
return;
value = wpa_config_get(ssid, "psk");
if (value == NULL)
return;
fprintf(f, "\tpsk=%s\n", value);
os_free(value);
}
static void write_proto(FILE *f, struct wpa_ssid *ssid)
{
char *value;
if (ssid->proto == DEFAULT_PROTO)
return;
value = wpa_config_get(ssid, "proto");
if (value == NULL)
return;
if (value[0])
fprintf(f, "\tproto=%s\n", value);
os_free(value);
}
static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid)
{
char *value;
if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
return;
value = wpa_config_get(ssid, "key_mgmt");
if (value == NULL)
return;
if (value[0])
fprintf(f, "\tkey_mgmt=%s\n", value);
os_free(value);
}
static void write_pairwise(FILE *f, struct wpa_ssid *ssid)
{
char *value;
if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
return;
value = wpa_config_get(ssid, "pairwise");
if (value == NULL)
return;
if (value[0])
fprintf(f, "\tpairwise=%s\n", value);
os_free(value);
}
static void write_group(FILE *f, struct wpa_ssid *ssid)
{
char *value;
if (ssid->group_cipher == DEFAULT_GROUP)
return;
value = wpa_config_get(ssid, "group");
if (value == NULL)
return;
if (value[0])
fprintf(f, "\tgroup=%s\n", value);
os_free(value);
}
static void write_auth_alg(FILE *f, struct wpa_ssid *ssid)
{
char *value;
if (ssid->auth_alg == 0)
return;
value = wpa_config_get(ssid, "auth_alg");
if (value == NULL)
return;
if (value[0])
fprintf(f, "\tauth_alg=%s\n", value);
os_free(value);
}
#ifdef IEEE8021X_EAPOL
static void write_eap(FILE *f, struct wpa_ssid *ssid)
{
char *value;
value = wpa_config_get(ssid, "eap");
if (value == NULL)
return;
if (value[0])
fprintf(f, "\teap=%s\n", value);
os_free(value);
}
#endif /* IEEE8021X_EAPOL */
static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid)
{
char field[20], *value;
int res;
res = os_snprintf(field, sizeof(field), "wep_key%d", idx);
if (os_snprintf_error(sizeof(field), res))
return;
value = wpa_config_get(ssid, field);
if (value) {
fprintf(f, "\t%s=%s\n", field, value);
os_free(value);
}
}
#ifdef CONFIG_P2P
static void write_go_p2p_dev_addr(FILE *f, struct wpa_ssid *ssid)
{
char *value = wpa_config_get(ssid, "go_p2p_dev_addr");
if (value == NULL)
return;
fprintf(f, "\tgo_p2p_dev_addr=%s\n", value);
os_free(value);
}
static void write_p2p_client_list(FILE *f, struct wpa_ssid *ssid)
{
char *value = wpa_config_get(ssid, "p2p_client_list");
if (value == NULL)
return;
fprintf(f, "\tp2p_client_list=%s\n", value);
os_free(value);
}
static void write_psk_list(FILE *f, struct wpa_ssid *ssid)
{
struct psk_list_entry *psk;
char hex[32 * 2 + 1];
dl_list_for_each(psk, &ssid->psk_list, struct psk_list_entry, list) {
wpa_snprintf_hex(hex, sizeof(hex), psk->psk, sizeof(psk->psk));
fprintf(f, "\tpsk_list=%s" MACSTR "-%s\n",
psk->p2p ? "P2P-" : "", MAC2STR(psk->addr), hex);
}
}
#endif /* CONFIG_P2P */
static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
{
int i;
#define STR(t) write_str(f, #t, ssid)
#define INT(t) write_int(f, #t, ssid->t, 0)
#define INTe(t) write_int(f, #t, ssid->eap.t, 0)
#define INT_DEF(t, def) write_int(f, #t, ssid->t, def)
#define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def)
STR(ssid);
INT(scan_ssid);
write_bssid(f, ssid);
write_str(f, "bssid_blacklist", ssid);
write_str(f, "bssid_whitelist", ssid);
write_psk(f, ssid);
INT(mem_only_psk);
write_proto(f, ssid);
write_key_mgmt(f, ssid);
INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD);
write_pairwise(f, ssid);
write_group(f, ssid);
write_auth_alg(f, ssid);
STR(bgscan);
STR(autoscan);
STR(scan_freq);
#ifdef IEEE8021X_EAPOL
write_eap(f, ssid);
STR(identity);
STR(anonymous_identity);
STR(password);
STR(ca_cert);
STR(ca_path);
STR(client_cert);
STR(private_key);
STR(private_key_passwd);
STR(dh_file);
STR(subject_match);
STR(altsubject_match);
STR(domain_suffix_match);
STR(domain_match);
STR(ca_cert2);
STR(ca_path2);
STR(client_cert2);
STR(private_key2);
STR(private_key2_passwd);
STR(dh_file2);
STR(subject_match2);
STR(altsubject_match2);
STR(domain_suffix_match2);
STR(domain_match2);
STR(phase1);
STR(phase2);
STR(pcsc);
STR(pin);
STR(engine_id);
STR(key_id);
STR(cert_id);
STR(ca_cert_id);
STR(key2_id);
STR(pin2);
STR(engine2_id);
STR(cert2_id);
STR(ca_cert2_id);
INTe(engine);
INTe(engine2);
INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
STR(openssl_ciphers);
INTe(erp);
#endif /* IEEE8021X_EAPOL */
for (i = 0; i < 4; i++)
write_wep_key(f, i, ssid);
INT(wep_tx_keyidx);
INT(priority);
#ifdef IEEE8021X_EAPOL
INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
STR(pac_file);
INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
INTe(ocsp);
INT_DEFe(sim_num, DEFAULT_USER_SELECTED_SIM);
#endif /* IEEE8021X_EAPOL */
INT(mode);
INT(no_auto_peer);
INT(frequency);
INT(fixed_freq);
write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1);
INT(disabled);
INT(peerkey);
INT(mixed_cell);
#ifdef CONFIG_IEEE80211W
write_int(f, "ieee80211w", ssid->ieee80211w,
MGMT_FRAME_PROTECTION_DEFAULT);
#endif /* CONFIG_IEEE80211W */
STR(id_str);
#ifdef CONFIG_P2P
write_go_p2p_dev_addr(f, ssid);
write_p2p_client_list(f, ssid);
write_psk_list(f, ssid);
#endif /* CONFIG_P2P */
INT(ap_max_inactivity);
INT(dtim_period);
INT(beacon_int);
#ifdef CONFIG_MACSEC
INT(macsec_policy);
#endif /* CONFIG_MACSEC */
#ifdef CONFIG_HS20
INT(update_identifier);
#endif /* CONFIG_HS20 */
write_int(f, "mac_addr", ssid->mac_addr, -1);
#ifdef CONFIG_MESH
STR(mesh_basic_rates);
INT_DEF(dot11MeshMaxRetries, DEFAULT_MESH_MAX_RETRIES);
INT_DEF(dot11MeshRetryTimeout, DEFAULT_MESH_RETRY_TIMEOUT);
INT_DEF(dot11MeshConfirmTimeout, DEFAULT_MESH_CONFIRM_TIMEOUT);
INT_DEF(dot11MeshHoldingTimeout, DEFAULT_MESH_HOLDING_TIMEOUT);
#endif /* CONFIG_MESH */
INT(wpa_ptk_rekey);
INT(ignore_broadcast_ssid);
#ifdef CONFIG_HT_OVERRIDES
INT_DEF(disable_ht, DEFAULT_DISABLE_HT);
INT_DEF(disable_ht40, DEFAULT_DISABLE_HT40);
INT_DEF(disable_sgi, DEFAULT_DISABLE_SGI);
INT_DEF(disable_ldpc, DEFAULT_DISABLE_LDPC);
INT(ht40_intolerant);
INT_DEF(disable_max_amsdu, DEFAULT_DISABLE_MAX_AMSDU);
INT_DEF(ampdu_factor, DEFAULT_AMPDU_FACTOR);
INT_DEF(ampdu_density, DEFAULT_AMPDU_DENSITY);
STR(ht_mcs);
#endif /* CONFIG_HT_OVERRIDES */
#ifdef CONFIG_VHT_OVERRIDES
INT(disable_vht);
INT(vht_capa);
INT(vht_capa_mask);
INT_DEF(vht_rx_mcs_nss_1, -1);
INT_DEF(vht_rx_mcs_nss_2, -1);
INT_DEF(vht_rx_mcs_nss_3, -1);
INT_DEF(vht_rx_mcs_nss_4, -1);
INT_DEF(vht_rx_mcs_nss_5, -1);
INT_DEF(vht_rx_mcs_nss_6, -1);
INT_DEF(vht_rx_mcs_nss_7, -1);
INT_DEF(vht_rx_mcs_nss_8, -1);
INT_DEF(vht_tx_mcs_nss_1, -1);
INT_DEF(vht_tx_mcs_nss_2, -1);
INT_DEF(vht_tx_mcs_nss_3, -1);
INT_DEF(vht_tx_mcs_nss_4, -1);
INT_DEF(vht_tx_mcs_nss_5, -1);
INT_DEF(vht_tx_mcs_nss_6, -1);
INT_DEF(vht_tx_mcs_nss_7, -1);
INT_DEF(vht_tx_mcs_nss_8, -1);
#endif /* CONFIG_VHT_OVERRIDES */
#undef STR
#undef INT
#undef INT_DEF
}
static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred)
{
size_t i;
if (cred->priority)
fprintf(f, "\tpriority=%d\n", cred->priority);
if (cred->pcsc)
fprintf(f, "\tpcsc=%d\n", cred->pcsc);
if (cred->realm)
fprintf(f, "\trealm=\"%s\"\n", cred->realm);
if (cred->username)
fprintf(f, "\tusername=\"%s\"\n", cred->username);
if (cred->password && cred->ext_password)
fprintf(f, "\tpassword=ext:%s\n", cred->password);
else if (cred->password)
fprintf(f, "\tpassword=\"%s\"\n", cred->password);
if (cred->ca_cert)
fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert);
if (cred->client_cert)
fprintf(f, "\tclient_cert=\"%s\"\n", cred->client_cert);
if (cred->private_key)
fprintf(f, "\tprivate_key=\"%s\"\n", cred->private_key);
if (cred->private_key_passwd)
fprintf(f, "\tprivate_key_passwd=\"%s\"\n",
cred->private_key_passwd);
if (cred->imsi)
fprintf(f, "\timsi=\"%s\"\n", cred->imsi);
if (cred->milenage)
fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage);
for (i = 0; i < cred->num_domain; i++)
fprintf(f, "\tdomain=\"%s\"\n", cred->domain[i]);
if (cred->domain_suffix_match)
fprintf(f, "\tdomain_suffix_match=\"%s\"\n",
cred->domain_suffix_match);
if (cred->roaming_consortium_len) {
fprintf(f, "\troaming_consortium=");
for (i = 0; i < cred->roaming_consortium_len; i++)
fprintf(f, "%02x", cred->roaming_consortium[i]);
fprintf(f, "\n");
}
if (cred->eap_method) {
const char *name;
name = eap_get_name(cred->eap_method[0].vendor,
cred->eap_method[0].method);
if (name)
fprintf(f, "\teap=%s\n", name);
}
if (cred->phase1)
fprintf(f, "\tphase1=\"%s\"\n", cred->phase1);
if (cred->phase2)
fprintf(f, "\tphase2=\"%s\"\n", cred->phase2);
if (cred->excluded_ssid) {
size_t j;
for (i = 0; i < cred->num_excluded_ssid; i++) {
struct excluded_ssid *e = &cred->excluded_ssid[i];
fprintf(f, "\texcluded_ssid=");
for (j = 0; j < e->ssid_len; j++)
fprintf(f, "%02x", e->ssid[j]);
fprintf(f, "\n");
}
}
if (cred->roaming_partner) {
for (i = 0; i < cred->num_roaming_partner; i++) {
struct roaming_partner *p = &cred->roaming_partner[i];
fprintf(f, "\troaming_partner=\"%s,%d,%u,%s\"\n",
p->fqdn, p->exact_match, p->priority,
p->country);
}
}
if (cred->update_identifier)
fprintf(f, "\tupdate_identifier=%d\n", cred->update_identifier);
if (cred->provisioning_sp)
fprintf(f, "\tprovisioning_sp=\"%s\"\n", cred->provisioning_sp);
if (cred->sp_priority)
fprintf(f, "\tsp_priority=%d\n", cred->sp_priority);
if (cred->min_dl_bandwidth_home)
fprintf(f, "\tmin_dl_bandwidth_home=%u\n",
cred->min_dl_bandwidth_home);
if (cred->min_ul_bandwidth_home)
fprintf(f, "\tmin_ul_bandwidth_home=%u\n",
cred->min_ul_bandwidth_home);
if (cred->min_dl_bandwidth_roaming)
fprintf(f, "\tmin_dl_bandwidth_roaming=%u\n",
cred->min_dl_bandwidth_roaming);
if (cred->min_ul_bandwidth_roaming)
fprintf(f, "\tmin_ul_bandwidth_roaming=%u\n",
cred->min_ul_bandwidth_roaming);
if (cred->max_bss_load)
fprintf(f, "\tmax_bss_load=%u\n",
cred->max_bss_load);
if (cred->ocsp)
fprintf(f, "\tocsp=%d\n", cred->ocsp);
if (cred->num_req_conn_capab) {
for (i = 0; i < cred->num_req_conn_capab; i++) {
int *ports;
fprintf(f, "\treq_conn_capab=%u",
cred->req_conn_capab_proto[i]);
ports = cred->req_conn_capab_port[i];
if (ports) {
int j;
for (j = 0; ports[j] != -1; j++) {
fprintf(f, "%s%d", j > 0 ? "," : ":",
ports[j]);
}
}
fprintf(f, "\n");
}
}
if (cred->required_roaming_consortium_len) {
fprintf(f, "\trequired_roaming_consortium=");
for (i = 0; i < cred->required_roaming_consortium_len; i++)
fprintf(f, "%02x",
cred->required_roaming_consortium[i]);
fprintf(f, "\n");
}
if (cred->sim_num != DEFAULT_USER_SELECTED_SIM)
fprintf(f, "\tsim_num=%d\n", cred->sim_num);
}
#ifndef CONFIG_NO_CONFIG_BLOBS
static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob)
{
unsigned char *encoded;
encoded = base64_encode(blob->data, blob->len, NULL);
if (encoded == NULL)
return -1;
fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded);
os_free(encoded);
return 0;
}
#endif /* CONFIG_NO_CONFIG_BLOBS */
static void write_global_bin(FILE *f, const char *field,
const struct wpabuf *val)
{
size_t i;
const u8 *pos;
if (val == NULL)
return;
fprintf(f, "%s=", field);
pos = wpabuf_head(val);
for (i = 0; i < wpabuf_len(val); i++)
fprintf(f, "%02X", *pos++);
fprintf(f, "\n");
}
static void wpa_config_write_global(FILE *f, struct wpa_config *config)
{
#ifdef CONFIG_CTRL_IFACE
if (config->ctrl_interface)
fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface);
if (config->ctrl_interface_group)
fprintf(f, "ctrl_interface_group=%s\n",
config->ctrl_interface_group);
#endif /* CONFIG_CTRL_IFACE */
if (config->eapol_version != DEFAULT_EAPOL_VERSION)
fprintf(f, "eapol_version=%d\n", config->eapol_version);
if (config->ap_scan != DEFAULT_AP_SCAN)
fprintf(f, "ap_scan=%d\n", config->ap_scan);
if (config->disable_scan_offload)
fprintf(f, "disable_scan_offload=%d\n",
config->disable_scan_offload);
if (config->fast_reauth != DEFAULT_FAST_REAUTH)
fprintf(f, "fast_reauth=%d\n", config->fast_reauth);
if (config->opensc_engine_path)
fprintf(f, "opensc_engine_path=%s\n",
config->opensc_engine_path);
if (config->pkcs11_engine_path)
fprintf(f, "pkcs11_engine_path=%s\n",
config->pkcs11_engine_path);
if (config->pkcs11_module_path)
fprintf(f, "pkcs11_module_path=%s\n",
config->pkcs11_module_path);
if (config->openssl_ciphers)
fprintf(f, "openssl_ciphers=%s\n", config->openssl_ciphers);
if (config->pcsc_reader)
fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader);
if (config->pcsc_pin)
fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin);
if (config->driver_param)
fprintf(f, "driver_param=%s\n", config->driver_param);
if (config->dot11RSNAConfigPMKLifetime)
fprintf(f, "dot11RSNAConfigPMKLifetime=%u\n",
config->dot11RSNAConfigPMKLifetime);
if (config->dot11RSNAConfigPMKReauthThreshold)
fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%u\n",
config->dot11RSNAConfigPMKReauthThreshold);
if (config->dot11RSNAConfigSATimeout)
fprintf(f, "dot11RSNAConfigSATimeout=%u\n",
config->dot11RSNAConfigSATimeout);
if (config->update_config)
fprintf(f, "update_config=%d\n", config->update_config);
#ifdef CONFIG_WPS
if (!is_nil_uuid(config->uuid)) {
char buf[40];
uuid_bin2str(config->uuid, buf, sizeof(buf));
fprintf(f, "uuid=%s\n", buf);
}
if (config->device_name)
fprintf(f, "device_name=%s\n", config->device_name);
if (config->manufacturer)
fprintf(f, "manufacturer=%s\n", config->manufacturer);
if (config->model_name)
fprintf(f, "model_name=%s\n", config->model_name);
if (config->model_number)
fprintf(f, "model_number=%s\n", config->model_number);
if (config->serial_number)
fprintf(f, "serial_number=%s\n", config->serial_number);
{
char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
buf = wps_dev_type_bin2str(config->device_type,
_buf, sizeof(_buf));
if (os_strcmp(buf, "0-00000000-0") != 0)
fprintf(f, "device_type=%s\n", buf);
}
if (WPA_GET_BE32(config->os_version))
fprintf(f, "os_version=%08x\n",
WPA_GET_BE32(config->os_version));
if (config->config_methods)
fprintf(f, "config_methods=%s\n", config->config_methods);
if (config->wps_cred_processing)
fprintf(f, "wps_cred_processing=%d\n",
config->wps_cred_processing);
if (config->wps_vendor_ext_m1) {
int i, len = wpabuf_len(config->wps_vendor_ext_m1);
const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1);
if (len > 0) {
fprintf(f, "wps_vendor_ext_m1=");
for (i = 0; i < len; i++)
fprintf(f, "%02x", *p++);
fprintf(f, "\n");
}
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
if (config->p2p_listen_reg_class)
fprintf(f, "p2p_listen_reg_class=%d\n",
config->p2p_listen_reg_class);
if (config->p2p_listen_channel)
fprintf(f, "p2p_listen_channel=%d\n",
config->p2p_listen_channel);
if (config->p2p_oper_reg_class)
fprintf(f, "p2p_oper_reg_class=%d\n",
config->p2p_oper_reg_class);
if (config->p2p_oper_channel)
fprintf(f, "p2p_oper_channel=%d\n", config->p2p_oper_channel);
if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT)
fprintf(f, "p2p_go_intent=%d\n", config->p2p_go_intent);
if (config->p2p_ssid_postfix)
fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix);
if (config->persistent_reconnect)
fprintf(f, "persistent_reconnect=%d\n",
config->persistent_reconnect);
if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS)
fprintf(f, "p2p_intra_bss=%d\n", config->p2p_intra_bss);
if (config->p2p_group_idle)
fprintf(f, "p2p_group_idle=%d\n", config->p2p_group_idle);
if (config->p2p_passphrase_len)
fprintf(f, "p2p_passphrase_len=%u\n",
config->p2p_passphrase_len);
if (config->p2p_pref_chan) {
unsigned int i;
fprintf(f, "p2p_pref_chan=");
for (i = 0; i < config->num_p2p_pref_chan; i++) {
fprintf(f, "%s%u:%u", i > 0 ? "," : "",
config->p2p_pref_chan[i].op_class,
config->p2p_pref_chan[i].chan);
}
fprintf(f, "\n");
}
if (config->p2p_no_go_freq.num) {
char *val = freq_range_list_str(&config->p2p_no_go_freq);
if (val) {
fprintf(f, "p2p_no_go_freq=%s\n", val);
os_free(val);
}
}
if (config->p2p_add_cli_chan)
fprintf(f, "p2p_add_cli_chan=%d\n", config->p2p_add_cli_chan);
if (config->p2p_optimize_listen_chan !=
DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN)
fprintf(f, "p2p_optimize_listen_chan=%d\n",
config->p2p_optimize_listen_chan);
if (config->p2p_go_ht40)
fprintf(f, "p2p_go_ht40=%d\n", config->p2p_go_ht40);
if (config->p2p_go_vht)
fprintf(f, "p2p_go_vht=%d\n", config->p2p_go_vht);
if (config->p2p_go_ctwindow != DEFAULT_P2P_GO_CTWINDOW)
fprintf(f, "p2p_go_ctwindow=%d\n", config->p2p_go_ctwindow);
if (config->p2p_disabled)
fprintf(f, "p2p_disabled=%d\n", config->p2p_disabled);
if (config->p2p_no_group_iface)
fprintf(f, "p2p_no_group_iface=%d\n",
config->p2p_no_group_iface);
if (config->p2p_ignore_shared_freq)
fprintf(f, "p2p_ignore_shared_freq=%d\n",
config->p2p_ignore_shared_freq);
if (config->p2p_cli_probe)
fprintf(f, "p2p_cli_probe=%d\n", config->p2p_cli_probe);
if (config->p2p_go_freq_change_policy != DEFAULT_P2P_GO_FREQ_MOVE)
fprintf(f, "p2p_go_freq_change_policy=%u\n",
config->p2p_go_freq_change_policy);
#endif /* CONFIG_P2P */
if (config->country[0] && config->country[1]) {
fprintf(f, "country=%c%c\n",
config->country[0], config->country[1]);
}
if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT)
fprintf(f, "bss_max_count=%u\n", config->bss_max_count);
if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE)
fprintf(f, "bss_expiration_age=%u\n",
config->bss_expiration_age);
if (config->bss_expiration_scan_count !=
DEFAULT_BSS_EXPIRATION_SCAN_COUNT)
fprintf(f, "bss_expiration_scan_count=%u\n",
config->bss_expiration_scan_count);
if (config->filter_ssids)
fprintf(f, "filter_ssids=%d\n", config->filter_ssids);
if (config->max_num_sta != DEFAULT_MAX_NUM_STA)
fprintf(f, "max_num_sta=%u\n", config->max_num_sta);
if (config->disassoc_low_ack)
fprintf(f, "disassoc_low_ack=%d\n", config->disassoc_low_ack);
#ifdef CONFIG_HS20
if (config->hs20)
fprintf(f, "hs20=1\n");
#endif /* CONFIG_HS20 */
#ifdef CONFIG_INTERWORKING
if (config->interworking)
fprintf(f, "interworking=%d\n", config->interworking);
if (!is_zero_ether_addr(config->hessid))
fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid));
if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE)
fprintf(f, "access_network_type=%d\n",
config->access_network_type);
#endif /* CONFIG_INTERWORKING */
if (config->pbc_in_m1)
fprintf(f, "pbc_in_m1=%d\n", config->pbc_in_m1);
if (config->wps_nfc_pw_from_config) {
if (config->wps_nfc_dev_pw_id)
fprintf(f, "wps_nfc_dev_pw_id=%d\n",
config->wps_nfc_dev_pw_id);
write_global_bin(f, "wps_nfc_dh_pubkey",
config->wps_nfc_dh_pubkey);
write_global_bin(f, "wps_nfc_dh_privkey",
config->wps_nfc_dh_privkey);
write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw);
}
if (config->ext_password_backend)
fprintf(f, "ext_password_backend=%s\n",
config->ext_password_backend);
if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY)
fprintf(f, "p2p_go_max_inactivity=%d\n",
config->p2p_go_max_inactivity);
if (config->auto_interworking)
fprintf(f, "auto_interworking=%d\n",
config->auto_interworking);
if (config->okc)
fprintf(f, "okc=%d\n", config->okc);
if (config->pmf)
fprintf(f, "pmf=%d\n", config->pmf);
if (config->dtim_period)
fprintf(f, "dtim_period=%d\n", config->dtim_period);
if (config->beacon_int)
fprintf(f, "beacon_int=%d\n", config->beacon_int);
if (config->sae_groups) {
int i;
fprintf(f, "sae_groups=");
for (i = 0; config->sae_groups[i] >= 0; i++) {
fprintf(f, "%s%d", i > 0 ? " " : "",
config->sae_groups[i]);
}
fprintf(f, "\n");
}
if (config->ap_vendor_elements) {
int i, len = wpabuf_len(config->ap_vendor_elements);
const u8 *p = wpabuf_head_u8(config->ap_vendor_elements);
if (len > 0) {
fprintf(f, "ap_vendor_elements=");
for (i = 0; i < len; i++)
fprintf(f, "%02x", *p++);
fprintf(f, "\n");
}
}
if (config->ignore_old_scan_res)
fprintf(f, "ignore_old_scan_res=%d\n",
config->ignore_old_scan_res);
if (config->freq_list && config->freq_list[0]) {
int i;
fprintf(f, "freq_list=");
for (i = 0; config->freq_list[i]; i++) {
fprintf(f, "%s%d", i > 0 ? " " : "",
config->freq_list[i]);
}
fprintf(f, "\n");
}
if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ)
fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq);
if (config->sched_scan_interval)
fprintf(f, "sched_scan_interval=%u\n",
config->sched_scan_interval);
if (config->external_sim)
fprintf(f, "external_sim=%d\n", config->external_sim);
if (config->tdls_external_control)
fprintf(f, "tdls_external_control=%d\n",
config->tdls_external_control);
if (config->wowlan_triggers)
fprintf(f, "wowlan_triggers=%s\n",
config->wowlan_triggers);
if (config->bgscan)
fprintf(f, "bgscan=\"%s\"\n", config->bgscan);
if (config->p2p_search_delay != DEFAULT_P2P_SEARCH_DELAY)
fprintf(f, "p2p_search_delay=%u\n",
config->p2p_search_delay);
if (config->mac_addr)
fprintf(f, "mac_addr=%d\n", config->mac_addr);
if (config->rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
fprintf(f, "rand_addr_lifetime=%u\n",
config->rand_addr_lifetime);
if (config->preassoc_mac_addr)
fprintf(f, "preassoc_mac_addr=%d\n", config->preassoc_mac_addr);
if (config->key_mgmt_offload != DEFAULT_KEY_MGMT_OFFLOAD)
fprintf(f, "key_mgmt_offload=%d\n", config->key_mgmt_offload);
if (config->user_mpm != DEFAULT_USER_MPM)
fprintf(f, "user_mpm=%d\n", config->user_mpm);
if (config->max_peer_links != DEFAULT_MAX_PEER_LINKS)
fprintf(f, "max_peer_links=%d\n", config->max_peer_links);
if (config->cert_in_cb != DEFAULT_CERT_IN_CB)
fprintf(f, "cert_in_cb=%d\n", config->cert_in_cb);
if (config->mesh_max_inactivity != DEFAULT_MESH_MAX_INACTIVITY)
fprintf(f, "mesh_max_inactivity=%d\n",
config->mesh_max_inactivity);
if (config->dot11RSNASAERetransPeriod !=
DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD)
fprintf(f, "dot11RSNASAERetransPeriod=%d\n",
config->dot11RSNASAERetransPeriod);
if (config->passive_scan)
fprintf(f, "passive_scan=%d\n", config->passive_scan);
if (config->reassoc_same_bss_optim)
fprintf(f, "reassoc_same_bss_optim=%d\n",
config->reassoc_same_bss_optim);
if (config->wps_priority)
fprintf(f, "wps_priority=%d\n", config->wps_priority);
}
#endif /* CONFIG_NO_CONFIG_WRITE */
int wpa_config_write(const char *name, struct wpa_config *config)
{
#ifndef CONFIG_NO_CONFIG_WRITE
FILE *f;
struct wpa_ssid *ssid;
struct wpa_cred *cred;
#ifndef CONFIG_NO_CONFIG_BLOBS
struct wpa_config_blob *blob;
#endif /* CONFIG_NO_CONFIG_BLOBS */
int ret = 0;
const char *orig_name = name;
int tmp_len = os_strlen(name) + 5; /* allow space for .tmp suffix */
char *tmp_name = os_malloc(tmp_len);
if (tmp_name) {
os_snprintf(tmp_name, tmp_len, "%s.tmp", name);
name = tmp_name;
}
wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
f = fopen(name, "w");
if (f == NULL) {
wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name);
os_free(tmp_name);
return -1;
}
wpa_config_write_global(f, config);
for (cred = config->cred; cred; cred = cred->next) {
if (cred->temporary)
continue;
fprintf(f, "\ncred={\n");
wpa_config_write_cred(f, cred);
fprintf(f, "}\n");
}
for (ssid = config->ssid; ssid; ssid = ssid->next) {
if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary)
continue; /* do not save temporary networks */
if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
!ssid->passphrase)
continue; /* do not save invalid network */
fprintf(f, "\nnetwork={\n");
wpa_config_write_network(f, ssid);
fprintf(f, "}\n");
}
#ifndef CONFIG_NO_CONFIG_BLOBS
for (blob = config->blobs; blob; blob = blob->next) {
ret = wpa_config_write_blob(f, blob);
if (ret)
break;
}
#endif /* CONFIG_NO_CONFIG_BLOBS */
fclose(f);
if (tmp_name) {
int chmod_ret = 0;
#ifdef ANDROID
chmod_ret = chmod(tmp_name,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
#endif /* ANDROID */
if (chmod_ret != 0 || rename(tmp_name, orig_name) != 0)
ret = -1;
os_free(tmp_name);
}
wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
orig_name, ret ? "un" : "");
return ret;
#else /* CONFIG_NO_CONFIG_WRITE */
return -1;
#endif /* CONFIG_NO_CONFIG_WRITE */
}