/src/hostap/wpa_supplicant/config_file.c

Source
/*
 * WPA Supplicant / Configuration backend: text file
 * Copyright (c) 2003-2019, 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"
#include <sys/stat.h>
#include <fcntl.h>

#include "common.h"
#include "config.h"
#include "base64.h"
#include "uuid.h"
#include "common/ieee802_1x_defs.h"
#include "p2p/p2p.h"
#include "eap_peer/eap_methods.h"
#include "eap_peer/eap.h"
#include "utils/config.h"


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->disabled == 2)
    ssid->p2p_persistent_group = 1;

  if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
      !(ssid->pairwise_cipher & (WPA_CIPHER_CCMP | WPA_CIPHER_CCMP_256 |
               WPA_CIPHER_GCMP | WPA_CIPHER_GCMP_256 |
               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 (is_6ghz_freq(ssid->frequency) && ssid->mode == WPAS_MODE_MESH &&
      ssid->key_mgmt == WPA_KEY_MGMT_NONE) {
    wpa_printf(MSG_ERROR,
         "Line %d: key_mgmt for mesh network in 6 GHz should be SAE",
         line);
    errors++;
  }
  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++;
  }

#ifdef CONFIG_OCV
  if (ssid->ocv && ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
    wpa_printf(MSG_ERROR,
         "Line %d: PMF needs to be enabled whenever using OCV",
         line);
    errors++;
  }
#endif /* CONFIG_OCV */

  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) {
#ifndef CONFIG_WEP
      if (os_strcmp(pos, "wep_key0") == 0 ||
          os_strcmp(pos, "wep_key1") == 0 ||
          os_strcmp(pos, "wep_key2") == 0 ||
          os_strcmp(pos, "wep_key3") == 0 ||
          os_strcmp(pos, "wep_tx_keyidx") == 0) {
        wpa_printf(MSG_ERROR,
             "Line %d: unsupported WEP parameter",
             *line);
        ssid->disabled = 1;
        continue;
      }
#endif /* CONFIG_WEP */
      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;
  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 || !encoded) {
    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 */


static struct wpa_dev_ik * wpa_config_read_identity(FILE *f, int *line, int id)
{
  struct wpa_dev_ik *identity;
  int errors = 0, end = 0;
  char buf[256], *pos, *pos2;

  wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new identity block",
       *line);
  identity = os_zalloc(sizeof(*identity));
  if (!identity)
    return NULL;
  identity->id = id;

  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) {
      wpa_printf(MSG_ERROR,
           "Line %d: Invalid identity 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_identity(identity, pos, pos2, *line) < 0)
      errors++;
  }

  if (!end) {
    wpa_printf(MSG_ERROR,
         "Line %d: identity block was not terminated properly.",
         *line);
    errors++;
  }

  if (errors) {
    wpa_config_free_identity(identity);
    identity = NULL;
  }

  return identity;
}


struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp,
            bool ro, bool show_details)
{
  FILE *f;
  char buf[1024], *pos;
  int errors = 0, line = 0;
  struct wpa_ssid *ssid, *tail, *head;
  struct wpa_cred *cred, *cred_tail, *cred_head;
  struct wpa_dev_ik *identity, *identity_tail, *identity_head;
  struct wpa_config *config;
  static int id = 0;
  static int cred_id = 0;
  static int base_identity_id = 0;
  int identity_id = base_identity_id;

  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;
  identity_tail = identity_head = config->identity;
  while (identity_tail && identity_tail->next)
    identity_tail = identity_tail->next;

  wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
  f = fopen(name, "r");
  if (f == NULL) {
    if (show_details)
      wpa_printf(MSG_ERROR,
           "Failed to open config file '%s', error: %s",
           name, strerror(errno));
    if (config != cfgp)
      os_free(config);
    return NULL;
  }

  while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) {
#ifndef WPA_IGNORE_CONFIG_ERRORS
    if (errors && !show_details)
      break;
#endif /* WPA_IGNORE_CONFIG_ERRORS */

    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;
      }
      ssid->go_dik_id += base_identity_id;
      ssid->ro = ro;
      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 (os_strcmp(pos, "identity={") == 0) {
      identity = wpa_config_read_identity(f, &line,
                  ++identity_id);
      if (!identity) {
        wpa_printf(MSG_ERROR,
             "Line %d: failed to parse identity block.",
             line);
        errors++;
        continue;
      }
      if (!identity_head) {
        identity_head = identity_tail = identity;
      } else {
        identity_tail->next = identity;
        identity_tail = identity;
      }
    } else if (wpa_config_process_global(config, pos, line,
                 show_details) < 0) {
      if (show_details)
        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;
  config->identity = identity_head;

  base_identity_id = identity_id;

#ifndef WPA_IGNORE_CONFIG_ERRORS
  if (errors) {
    if (config != cfgp)
      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);
  str_clear_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_bssid_hint(FILE *f, struct wpa_ssid *ssid)
{
  char *value = wpa_config_get(ssid, "bssid_hint");

  if (!value)
    return;
  fprintf(f, "\tbssid_hint=%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_group_mgmt(FILE *f, struct wpa_ssid *ssid)
{
  char *value;

  if (!ssid->group_mgmt_cipher)
    return;

  value = wpa_config_get(ssid, "group_mgmt");
  if (!value)
    return;
  if (value[0])
    fprintf(f, "\tgroup_mgmt=%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 */


#ifdef CONFIG_WEP
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);
  }
}
#endif /* CONFIG_WEP */


#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_p2p2_client_list(FILE *f, struct wpa_ssid *ssid)
{
  char *value = wpa_config_get(ssid, "p2p2_client_list");

  if (!value)
    return;
  fprintf(f, "\tp2p2_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 */


#ifdef CONFIG_MACSEC

static void write_mka_cak(FILE *f, struct wpa_ssid *ssid)
{
  char *value;

  if (!(ssid->mka_psk_set & MKA_PSK_SET_CAK))
    return;

  value = wpa_config_get(ssid, "mka_cak");
  if (!value)
    return;
  fprintf(f, "\tmka_cak=%s\n", value);
  os_free(value);
}


static void write_mka_ckn(FILE *f, struct wpa_ssid *ssid)
{
  char *value;

  if (!(ssid->mka_psk_set & MKA_PSK_SET_CKN))
    return;

  value = wpa_config_get(ssid, "mka_ckn");
  if (!value)
    return;
  fprintf(f, "\tmka_ckn=%s\n", value);
  os_free(value);
}

#endif /* CONFIG_MACSEC */


static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid,
             struct wpa_config *config)
{
#define STR(t) write_str(f, #t, ssid)
#define INT(t) write_int(f, #t, ssid->t, 0)
#define INTe(t, m) write_int(f, #t, ssid->eap.m, 0)
#define INT_DEF(t, def) write_int(f, #t, ssid->t, def)
#define INT_DEFe(t, m, def) write_int(f, #t, ssid->eap.m, def)

  STR(ssid);
  INT(scan_ssid);
  write_bssid(f, ssid);
  write_bssid_hint(f, ssid);
  write_str(f, "bssid_ignore", ssid);
  write_str(f, "bssid_accept", ssid);
  write_psk(f, ssid);
  INT(mem_only_psk);
  STR(sae_password);
  STR(sae_password_id);
  write_int(f, "sae_pwe", ssid->sae_pwe, DEFAULT_SAE_PWE);
  INT(sae_password_id_change);
  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_group_mgmt(f, ssid);
  write_auth_alg(f, ssid);
  STR(bgscan);
  STR(autoscan);
  STR(scan_freq);
  STR(freq_list);
#ifdef IEEE8021X_EAPOL
  write_eap(f, ssid);
  STR(identity);
  STR(anonymous_identity);
  STR(imsi_identity);
  STR(machine_identity);
  STR(password);
  STR(machine_password);
  STR(ca_cert);
  STR(ca_path);
  STR(client_cert);
  STR(private_key);
  STR(private_key_passwd);
  STR(subject_match);
  STR(check_cert_subject);
  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(subject_match2);
  STR(check_cert_subject2);
  STR(altsubject_match2);
  STR(domain_suffix_match2);
  STR(domain_match2);
  STR(machine_ca_cert);
  STR(machine_ca_path);
  STR(machine_client_cert);
  STR(machine_private_key);
  STR(machine_private_key_passwd);
  STR(machine_subject_match);
  STR(machine_check_cert_subject);
  STR(machine_altsubject_match);
  STR(machine_domain_suffix_match);
  STR(machine_domain_match);
  STR(phase1);
  STR(phase2);
  STR(machine_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, cert.engine);
  INTe(engine2, phase2_cert.engine);
  INTe(machine_engine, machine_cert.engine);
  INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
  STR(openssl_ciphers);
  INTe(erp, erp);
#endif /* IEEE8021X_EAPOL */
#ifdef CONFIG_WEP
  {
    int i;

    for (i = 0; i < 4; i++)
      write_wep_key(f, i, ssid);
    INT(wep_tx_keyidx);
  }
#endif /* CONFIG_WEP */
  INT(priority);
#ifdef IEEE8021X_EAPOL
  INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
  STR(pac_file);
  INT_DEFe(fragment_size, fragment_size, DEFAULT_FRAGMENT_SIZE);
  INTe(ocsp, cert.ocsp);
  INTe(ocsp2, phase2_cert.ocsp);
  INTe(machine_ocsp, machine_cert.ocsp);
  INT_DEFe(sim_num, sim_num, DEFAULT_USER_SELECTED_SIM);
#endif /* IEEE8021X_EAPOL */
  INT(mode);
#ifdef CONFIG_MESH
  INT(no_auto_peer);
  INT_DEF(mesh_fwding, DEFAULT_MESH_FWDING);
#endif /* CONFIG_MESH */
  INT(frequency);
  INT(enable_edmg);
  INT(edmg_channel);
  INT(fixed_freq);
#ifdef CONFIG_ACS
  INT(acs);
#endif /* CONFIG_ACS */
  write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1);
  INT(disabled);
  INT(mixed_cell);
  INT_DEF(vht, 1);
  INT_DEF(ht, 1);
  INT(ht40);
  INT_DEF(he, 1);
  INT_DEF(max_oper_chwidth, DEFAULT_MAX_OPER_CHWIDTH);
  INT(vht_center_freq1);
  INT(vht_center_freq2);
  INT(pbss);
  INT(wps_disabled);
  INT(fils_dh_group);
  write_int(f, "ieee80211w", ssid->ieee80211w,
      MGMT_FRAME_PROTECTION_DEFAULT);
  STR(id_str);
#ifdef CONFIG_P2P
  write_go_p2p_dev_addr(f, ssid);
  write_p2p_client_list(f, ssid);
  write_p2p2_client_list(f, ssid);
  write_psk_list(f, ssid);
  {
    struct wpa_dev_ik *dev_ik;
    int i = 1, go_dik_id = 0;

    for (dev_ik = config->identity;
         dev_ik;
         dev_ik = dev_ik->next, i++) {
      if (dev_ik->id == ssid->go_dik_id) {
        go_dik_id = i;
        break;
      }
    }
    write_int(f, "go_dik_id", go_dik_id, 0);
  }
#endif /* CONFIG_P2P */
  INT(ap_max_inactivity);
  INT(dtim_period);
  INT(beacon_int);
#ifdef CONFIG_MACSEC
  INT(macsec_policy);
  write_mka_cak(f, ssid);
  write_mka_ckn(f, ssid);
  INT(macsec_integ_only);
  INT(macsec_replay_protect);
  INT(macsec_replay_window);
  INT(macsec_offload);
  INT(macsec_port);
  INT_DEF(mka_priority, DEFAULT_PRIO_NOT_KEY_SERVER);
  INT(macsec_csindex);
  INT(macsec_icv_indicator);
#endif /* CONFIG_MACSEC */
#ifdef CONFIG_HS20
  INT(update_identifier);
  STR(roaming_consortium_selection);
#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);
  INT_DEF(mesh_rssi_threshold, DEFAULT_MESH_RSSI_THRESHOLD);
#endif /* CONFIG_MESH */
  INT(wpa_ptk_rekey);
  INT(wpa_deny_ptk0_rekey);
  INT(group_rekey);
  INT(ignore_broadcast_ssid);
#ifdef CONFIG_DPP
  STR(dpp_connector);
  STR(dpp_netaccesskey);
  INT(dpp_netaccesskey_expiry);
  STR(dpp_csign);
  STR(dpp_pp_key);
  INT(dpp_pfs);
  INT(dpp_connector_privacy);
#endif /* CONFIG_DPP */
  INT(owe_group);
  INT(owe_only);
  INT(owe_ptk_workaround);
  INT(multi_ap_backhaul_sta);
  INT(ft_eap_pmksa_caching);
  INT(multi_ap_profile);
  INT(beacon_prot);
  INT(transition_disable);
  INT(sae_pk);
#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(tx_stbc, DEFAULT_TX_STBC);
  INT_DEF(rx_stbc, DEFAULT_RX_STBC);
  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 */
#ifdef CONFIG_HE_OVERRIDES
  INT(disable_he);
#endif /* CONFIG_HE_OVERRIDES */
  INT(disable_eht);
  INT(disable_uhr);
  INT(enable_4addr_mode);
  INT(max_idle);
  INT(ssid_protection);
  INT_DEF(rsn_overriding, RSN_OVERRIDING_NOT_SET);
#ifdef CONFIG_SAE
  if (ssid->alt_sae_password_ids) {
    struct wpabuf_array *ids = ssid->alt_sae_password_ids;
    unsigned int idx;
    char hex[255 * 2 + 1];

    for (idx = 0; idx < ids->num; idx++) {
      wpa_snprintf_hex(hex, sizeof(hex),
           wpabuf_head(ids->buf[idx]),
           wpabuf_len(ids->buf[idx]));
      fprintf(f, "\talt_sae_password_ids=%s\n", hex);
    }
  }
#endif /* CONFIG_SAE */
#ifdef CONFIG_PMKSA_PRIVACY
  INT(pmksa_privacy);
#endif /* CONFIG_PMKSA_PRIVACY */
#ifdef CONFIG_IEEE8021X_AUTH
  INT(eap_over_auth_frame);
#endif /* CONFIG_IEEE8021X_AUTH */
  INT_DEF(drop_unicast_ip_in_l2_multicast, 1);
  INT_DEF(always_use_proxy_arp, 0);
#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->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->num_home_ois) {
    size_t j;

    fprintf(f, "\thome_ois=\"");
    for (i = 0; i < cred->num_home_ois; i++) {
      if (i > 0)
        fprintf(f, ",");
      for (j = 0; j < cred->home_ois_len[i]; j++)
        fprintf(f, "%02x",
          cred->home_ois[i][j]);
    }
    fprintf(f, "\"\n");
  }

  if (cred->num_required_home_ois) {
    size_t j;

    fprintf(f, "\trequired_home_ois=\"");
    for (i = 0; i < cred->num_required_home_ois; i++) {
      if (i > 0)
        fprintf(f, ",");
      for (j = 0; j < cred->required_home_ois_len[i]; j++)
        fprintf(f, "%02x",
          cred->required_home_ois[i][j]);
    }
    fprintf(f, "\"\n");
  }

  if (cred->num_roaming_consortiums) {
    size_t j;

    fprintf(f, "\troaming_consortiums=\"");
    for (i = 0; i < cred->num_roaming_consortiums; i++) {
      if (i > 0)
        fprintf(f, ",");
      for (j = 0; j < cred->roaming_consortiums_len[i]; j++)
        fprintf(f, "%02x",
          cred->roaming_consortiums[i][j]);
    }
    fprintf(f, "\"\n");
  }

  if (cred->sim_num != DEFAULT_USER_SELECTED_SIM)
    fprintf(f, "\tsim_num=%d\n", cred->sim_num);

  if (cred->engine)
    fprintf(f, "\tengine=%d\n", cred->engine);
  if (cred->engine_id)
    fprintf(f, "\tengine_id=\"%s\"\n", cred->engine_id);
  if (cred->key_id)
    fprintf(f, "\tkey_id=\"%s\"\n", cred->key_id);
  if (cred->cert_id)
    fprintf(f, "\tcert_id=\"%s\"\n", cred->cert_id);
  if (cred->ca_cert_id)
    fprintf(f, "\tca_cert_id=\"%s\"\n", cred->ca_cert_id);

  if (cred->imsi_privacy_cert)
    fprintf(f, "\timsi_privacy_cert=\"%s\"\n",
      cred->imsi_privacy_cert);
  if (cred->imsi_privacy_attr)
    fprintf(f, "\timsi_privacy_attr=\"%s\"\n",
      cred->imsi_privacy_attr);
}


#ifndef CONFIG_NO_CONFIG_BLOBS
static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob)
{
  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);
#ifndef CONFIG_OPENSC_ENGINE_PATH
  if (config->opensc_engine_path)
    fprintf(f, "opensc_engine_path=%s\n",
      config->opensc_engine_path);
#endif /* CONFIG_OPENSC_ENGINE_PATH */
#ifndef CONFIG_PKCS11_ENGINE_PATH
  if (config->pkcs11_engine_path)
    fprintf(f, "pkcs11_engine_path=%s\n",
      config->pkcs11_engine_path);
#endif /* CONFIG_PKCS11_ENGINE_PATH */
#ifndef CONFIG_PKCS11_MODULE_PATH
  if (config->pkcs11_module_path)
    fprintf(f, "pkcs11_module_path=%s\n",
      config->pkcs11_module_path);
#endif /* 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->auto_uuid)
    fprintf(f, "auto_uuid=%d\n", config->auto_uuid);
  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_cred_add_sae)
    fprintf(f, "wps_cred_add_sae=%d\n",
      config->wps_cred_add_sae);
  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
  {
    int i;
    char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;

    for (i = 0; i < config->num_sec_device_types; i++) {
      buf = wps_dev_type_bin2str(config->sec_device_type[i],
               _buf, sizeof(_buf));
      if (buf)
        fprintf(f, "sec_device_type=%s\n", buf);
    }
  }
  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_he)
    fprintf(f, "p2p_go_he=%d\n", config->p2p_go_he);
  if (config->p2p_go_edmg)
    fprintf(f, "p2p_go_edmg=%d\n", config->p2p_go_edmg);
  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);

  if (config->p2p_6ghz_disable)
    fprintf(f, "p2p_6ghz_disable=%d\n", config->p2p_6ghz_disable);

  if (config->p2p_bootstrap_methods)
    fprintf(f, "p2p_bootstrap_methods=%d\n",
      config->p2p_bootstrap_methods);
  if (config->p2p_pasn_type)
    fprintf(f, "p2p_pasn_type=%d\n", config->p2p_pasn_type);
  if (config->p2p_comeback_after)
    fprintf(f, "p2p_comeback_after=%d\n",
      config->p2p_comeback_after);
  if (config->p2p_twt_power_mgmt)
    fprintf(f, "p2p_twt_power_mgmt=%d\n",
      config->p2p_twt_power_mgmt);
  if (config->p2p_chan_switch_req_enable)
    fprintf(f, "p2p_chan_switch_req_enable=%d\n",
      config->p2p_chan_switch_req_enable);
  if (config->p2p_reg_info)
    fprintf(f, "p2p_reg_info=%d\n", config->p2p_reg_info);
  if (config->p2p_assisted_dfs_chan_enable)
    fprintf(f, "p2p_assisted_dfs_chan_enable=%d\n",
      config->p2p_assisted_dfs_chan_enable);

  if (WPA_GET_BE32(config->ip_addr_go))
    fprintf(f, "ip_addr_go=%u.%u.%u.%u\n",
      config->ip_addr_go[0], config->ip_addr_go[1],
      config->ip_addr_go[2], config->ip_addr_go[3]);
  if (WPA_GET_BE32(config->ip_addr_mask))
    fprintf(f, "ip_addr_mask=%u.%u.%u.%u\n",
      config->ip_addr_mask[0], config->ip_addr_mask[1],
      config->ip_addr_mask[2], config->ip_addr_mask[3]);
  if (WPA_GET_BE32(config->ip_addr_start))
    fprintf(f, "ip_addr_start=%u.%u.%u.%u\n",
      config->ip_addr_start[0], config->ip_addr_start[1],
      config->ip_addr_start[2], config->ip_addr_start[3]);
  if (WPA_GET_BE32(config->ip_addr_end))
    fprintf(f, "ip_addr_end=%u.%u.%u.%u\n",
      config->ip_addr_end[0], config->ip_addr_end[1],
      config->ip_addr_end[2], config->ip_addr_end[3]);
#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->filter_rssi)
    fprintf(f, "filter_rssi=%d\n", config->filter_rssi);
  if (config->max_num_sta != DEFAULT_MAX_NUM_STA)
    fprintf(f, "max_num_sta=%u\n", config->max_num_sta);
  if (config->ap_isolate != DEFAULT_AP_ISOLATE)
    fprintf(f, "ap_isolate=%u\n", config->ap_isolate);
  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);
  if (config->go_interworking)
    fprintf(f, "go_interworking=%d\n", config->go_interworking);
  if (config->go_access_network_type)
    fprintf(f, "go_access_network_type=%d\n",
      config->go_access_network_type);
  if (config->go_internet)
    fprintf(f, "go_internet=%d\n", config->go_internet);
  if (config->go_venue_group)
    fprintf(f, "go_venue_group=%d\n", config->go_venue_group);
  if (config->go_venue_type)
    fprintf(f, "go_venue_type=%d\n", config->go_venue_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_check_mfp)
    fprintf(f, "sae_check_mfp=%d\n", config->sae_check_mfp);

  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->sae_pwe)
    fprintf(f, "sae_pwe=%d\n", config->sae_pwe);

  if (config->sae_pmkid_in_assoc)
    fprintf(f, "sae_pmkid_in_assoc=%d\n",
      config->sae_pmkid_in_assoc);

  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->ap_assocresp_elements) {
    int i, len = wpabuf_len(config->ap_assocresp_elements);
    const u8 *p = wpabuf_head_u8(config->ap_assocresp_elements);

    if (len > 0) {
      fprintf(f, "ap_assocresp_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->initial_freq_list && config->initial_freq_list[0]) {
    int i;
    fprintf(f, "initial_freq_list=");
    for (i = 0; config->initial_freq_list[i]; i++) {
      fprintf(f, "%s%d", i > 0 ? " " : "",
        config->initial_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->scan_res_valid_for_connect !=
      DEFAULT_SCAN_RES_VALID_FOR_CONNECT)
    fprintf(f, "scan_res_valid_for_connect=%d\n",
      config->scan_res_valid_for_connect);

  if (config->sched_scan_interval)
    fprintf(f, "sched_scan_interval=%u\n",
      config->sched_scan_interval);

  if (config->sched_scan_start_delay)
    fprintf(f, "sched_scan_start_delay=%u\n",
      config->sched_scan_start_delay);

  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->autoscan)
    fprintf(f, "autoscan=%s\n", config->autoscan);

  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->mesh_fwding != DEFAULT_MESH_FWDING)
    fprintf(f, "mesh_fwding=%d\n", config->mesh_fwding);

  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);

  if (config->wpa_rsc_relaxation != DEFAULT_WPA_RSC_RELAXATION)
    fprintf(f, "wpa_rsc_relaxation=%d\n",
      config->wpa_rsc_relaxation);

  if (config->sched_scan_plans)
    fprintf(f, "sched_scan_plans=%s\n", config->sched_scan_plans);

#ifdef CONFIG_MBO
  if (config->non_pref_chan)
    fprintf(f, "non_pref_chan=%s\n", config->non_pref_chan);
  if (config->mbo_cell_capa != DEFAULT_MBO_CELL_CAPA)
    fprintf(f, "mbo_cell_capa=%u\n", config->mbo_cell_capa);
  if (config->disassoc_imminent_rssi_threshold !=
      DEFAULT_DISASSOC_IMMINENT_RSSI_THRESHOLD)
    fprintf(f, "disassoc_imminent_rssi_threshold=%d\n",
      config->disassoc_imminent_rssi_threshold);
  if (config->oce != DEFAULT_OCE_SUPPORT)
    fprintf(f, "oce=%u\n", config->oce);
#endif /* CONFIG_MBO */

  if (config->gas_address3)
    fprintf(f, "gas_address3=%d\n", config->gas_address3);

  if (config->ftm_responder)
    fprintf(f, "ftm_responder=%d\n", config->ftm_responder);
  if (config->ftm_initiator)
    fprintf(f, "ftm_initiator=%d\n", config->ftm_initiator);

  if (config->twt_requester)
    fprintf(f, "twt_requester=%d\n", config->twt_requester);

  if (config->fst_group_id)
    fprintf(f, "fst_group_id=%s\n", config->fst_group_id);
  if (config->fst_priority)
    fprintf(f, "fst_priority=%d\n", config->fst_priority);
  if (config->fst_llt)
    fprintf(f, "fst_llt=%d\n", config->fst_llt);

  if (config->gas_rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
    fprintf(f, "gas_rand_addr_lifetime=%u\n",
      config->gas_rand_addr_lifetime);
  if (config->gas_rand_mac_addr)
    fprintf(f, "gas_rand_mac_addr=%d\n", config->gas_rand_mac_addr);
  if (config->dpp_config_processing)
    fprintf(f, "dpp_config_processing=%d\n",
      config->dpp_config_processing);
  if (config->dpp_name)
    fprintf(f, "dpp_name=%s\n", config->dpp_name);
  if (config->dpp_mud_url)
    fprintf(f, "dpp_mud_url=%s\n", config->dpp_mud_url);
  if (config->dpp_extra_conf_req_name)
    fprintf(f, "dpp_extra_conf_req_name=%s\n",
      config->dpp_extra_conf_req_name);
  if (config->dpp_extra_conf_req_value)
    fprintf(f, "dpp_extra_conf_req_value=%s\n",
      config->dpp_extra_conf_req_value);
  if (config->dpp_connector_privacy_default)
    fprintf(f, "dpp_connector_privacy_default=%d\n",
      config->dpp_connector_privacy_default);
  if (config->coloc_intf_reporting)
    fprintf(f, "coloc_intf_reporting=%d\n",
      config->coloc_intf_reporting);
  if (config->p2p_device_random_mac_addr)
    fprintf(f, "p2p_device_random_mac_addr=%d\n",
      config->p2p_device_random_mac_addr);
  if (!is_zero_ether_addr(config->p2p_device_persistent_mac_addr))
    fprintf(f, "p2p_device_persistent_mac_addr=" MACSTR "\n",
      MAC2STR(config->p2p_device_persistent_mac_addr));
  if (config->p2p_interface_random_mac_addr)
    fprintf(f, "p2p_interface_random_mac_addr=%d\n",
      config->p2p_interface_random_mac_addr);
  if (config->disable_btm)
    fprintf(f, "disable_btm=1\n");
  if (config->extended_key_id != DEFAULT_EXTENDED_KEY_ID)
    fprintf(f, "extended_key_id=%d\n",
      config->extended_key_id);
  if (config->wowlan_disconnect_on_deinit)
    fprintf(f, "wowlan_disconnect_on_deinit=%d\n",
      config->wowlan_disconnect_on_deinit);
  if (config->rsn_overriding)
    fprintf(f, "rsn_overriding=%d\n", config->rsn_overriding);
  if (config->mld_force_single_link)
    fprintf(f, "mld_force_single_link=1\n");
#ifdef CONFIG_TESTING_OPTIONS
  if (config->mld_connect_band_pref != MLD_CONNECT_BAND_PREF_AUTO)
    fprintf(f, "mld_connect_band_pref=%d\n",
      config->mld_connect_band_pref);
  if (!is_zero_ether_addr(config->mld_connect_bssid_pref))
    fprintf(f, "mld_connect_bssid_pref=" MACSTR "\n",
      MAC2STR(config->mld_connect_bssid_pref));
#endif /* CONFIG_TESTING_OPTIONS */
  if (config->ft_prepend_pmkid)
    fprintf(f, "ft_prepend_pmkid=%d\n", config->ft_prepend_pmkid);
  if (config->dik) {
    fprintf(f, "dik_cipher=%d\n", config->dik_cipher);
    write_global_bin(f, "dik", config->dik);
  }
  if (config->wfa_gen_capa)
    fprintf(f, "wfa_gen_capa=%d\n", config->wfa_gen_capa);
  write_global_bin(f, "wfa_gen_capa_supp", config->wfa_gen_capa_supp);
  if (config->disable_op_classes_80_80_mhz)
    fprintf(f, "disable_op_classes_80_80_mhz=%d\n",
      config->disable_op_classes_80_80_mhz);
  if (config->pr_pasn_type)
    fprintf(f, "pr_pasn_type=%d\n", config->pr_pasn_type);
  if (config->pr_preferred_role)
    fprintf(f, "pr_preferred_role=%d\n", config->pr_preferred_role);
  if (config->security_profiles != DEFAULT_SECURITY_PROFILES)
    fprintf(f, "security_profiles=%d\n", config->security_profiles);

#ifdef CONFIG_PASN
  if (config->pasn_groups) {
    int i;

    fprintf(f, "pasn_groups=");
    for (i = 0; config->pasn_groups[i] > 0; i++) {
      fprintf(f, "%s%d", i > 0 ? " " : "",
        config->pasn_groups[i]);
    }
    fprintf(f, "\n");
  }
#endif /* CONFIG_PASN */
}

static void wpa_config_write_identity(FILE *f, struct wpa_dev_ik *dev_ik)
{
  fprintf(f, "\tdik_cipher=%d\n", dev_ik->dik_cipher);

  if (dev_ik->dik)
    write_global_bin(f, "\tdik", dev_ik->dik);

  if (dev_ik->pmk)
    write_global_bin(f, "\tpmk", dev_ik->pmk);

  if (dev_ik->pmkid)
    write_global_bin(f, "\tpmkid", dev_ik->pmkid);
}

#endif /* CONFIG_NO_CONFIG_WRITE */


#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || \
  defined(__APPLE__) || defined(__OpenBSD__)
#define WPAS_CONFIG_USE_OPEN
#endif

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;
  struct wpa_dev_ik *dev_ik;
#ifndef CONFIG_NO_CONFIG_BLOBS
  struct wpa_config_blob *blob;
#endif /* CONFIG_NO_CONFIG_BLOBS */
  int ret = 0;
  const char *orig_name = name;
  size_t tmp_len, prefix_len, suffix_len;
  char *tmp_name;
  struct stat file_stat;
#ifdef WPAS_CONFIG_USE_OPEN
  int fd;
#else /* WPAS_CONFIG_USE_OPEN */
  mode_t prev;
#endif /* WPAS_CONFIG_USE_OPEN */
  u8 suffix[8];

  if (!name) {
    wpa_printf(MSG_ERROR, "No configuration file for writing");
    return -1;
  }

  if (os_get_random(suffix, sizeof(suffix)) < 0)
    return -1;

  prefix_len = os_strlen(name) + 5;
  suffix_len = 2 * sizeof(suffix);
  tmp_len = prefix_len + suffix_len + 1;
  tmp_name = os_malloc(tmp_len);
  if (!tmp_name)
    return -1;

  os_snprintf(tmp_name, tmp_len, "%s.tmp-", name);
  wpa_snprintf_hex(tmp_name + prefix_len, suffix_len + 1,
       suffix, sizeof(suffix));
  name = tmp_name;

#ifdef WPAS_CONFIG_USE_OPEN
  fd = open(name, O_WRONLY | O_CREAT | O_EXCL | O_NOFOLLOW,
      S_IRUSR | S_IWUSR);
  if (fd < 0) {
    wpa_printf(MSG_DEBUG, "Failed to create '%s'", name);
    os_free(tmp_name);
    return -1;
  }
  f = fdopen(fd, "w");
#else /* WPAS_CONFIG_USE_OPEN */
  prev = umask(S_IRWXG | S_IRWXO);
  f = fopen(name, "w");
  umask(prev);
#endif /* WPAS_CONFIG_USE_OPEN */
  if (f == NULL) {
    wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name);
    os_free(tmp_name);
    return -1;
  }

  wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);

  if (stat(orig_name, &file_stat) == 0)
    chmod(name,
          (file_stat.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) |
          S_IRUSR | S_IWUSR);

  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 ||
        ssid->ro)
      continue; /* do not save temporary networks */
    if (wpa_key_mgmt_wpa_psk_no_sae(ssid->key_mgmt) &&
        !ssid->psk_set && !ssid->passphrase)
      continue; /* do not save invalid network */
    if (wpa_key_mgmt_sae(ssid->key_mgmt) &&
        !ssid->passphrase && !ssid->sae_password &&
        !ssid->pmk_valid)
      continue; /* do not save invalid network */
    fprintf(f, "\nnetwork={\n");
    wpa_config_write_network(f, ssid, config);
    fprintf(f, "}\n");
  }

  for (dev_ik = config->identity; dev_ik; dev_ik = dev_ik->next) {
    fprintf(f, "\nidentity={\n");
    wpa_config_write_identity(f, dev_ik);
    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 */

  os_fdatasync(f);

  if (fclose(f) != 0) {
    wpa_printf(MSG_DEBUG,
         "fclose() failed ton temporary configuration file: %s",
         strerror(errno));
    ret = -1;
  }

#ifdef ANDROID
  if (!ret)
    ret = chmod(tmp_name, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
#endif /* ANDROID */
  if (!ret)
    ret = rename(tmp_name, orig_name);
  if (ret)
    unlink(tmp_name);

  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 */
}

Coverage Report

Created: 2026-09-03 06:15