mesh: Add user_mpm config option

[thirdparty/hostap.git] / wpa_supplicant / config_file.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"

#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;
        }

        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 = 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 (res < 0 || (size_t) res >= sizeof(field))
                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_psk(f, ssid);
        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(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(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);
#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(frequency);
        write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1);
        INT(disabled);
        INT(peerkey);
#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(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);

#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=%d\n",
                        config->dot11RSNAConfigPMKLifetime);
        if (config->dot11RSNAConfigPMKReauthThreshold)
                fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%d\n",
                        config->dot11RSNAConfigPMKReauthThreshold);
        if (config->dot11RSNAConfigSATimeout)
                fprintf(f, "dot11RSNAConfigSATimeout=%d\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=%u\n",
                        config->p2p_listen_reg_class);
        if (config->p2p_listen_channel)
                fprintf(f, "p2p_listen_channel=%u\n",
                        config->p2p_listen_channel);
        if (config->p2p_oper_reg_class)
                fprintf(f, "p2p_oper_reg_class=%u\n",
                        config->p2p_oper_reg_class);
        if (config->p2p_oper_channel)
                fprintf(f, "p2p_oper_channel=%u\n", config->p2p_oper_channel);
        if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT)
                fprintf(f, "p2p_go_intent=%u\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=%u\n",
                        config->persistent_reconnect);
        if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS)
                fprintf(f, "p2p_intra_bss=%u\n", config->p2p_intra_bss);
        if (config->p2p_group_idle)
                fprintf(f, "p2p_group_idle=%u\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=%u\n", config->p2p_go_ht40);
        if (config->p2p_go_vht)
                fprintf(f, "p2p_go_vht=%u\n", config->p2p_go_vht);
        if (config->p2p_disabled)
                fprintf(f, "p2p_disabled=%u\n", config->p2p_disabled);
        if (config->p2p_no_group_iface)
                fprintf(f, "p2p_no_group_iface=%u\n",
                        config->p2p_no_group_iface);
        if (config->p2p_ignore_shared_freq)
                fprintf(f, "p2p_ignore_shared_freq=%u\n",
                        config->p2p_ignore_shared_freq);
#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=%u\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=%u\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=%u\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%u", 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=%u\n", config->key_mgmt_offload);

        if (config->user_mpm != DEFAULT_USER_MPM)
                fprintf(f, "user_mpm=%d\n", config->user_mpm);
}

#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;

        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);
                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);

        wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
                   name, ret ? "un" : "");
        return ret;
#else /* CONFIG_NO_CONFIG_WRITE */
        return -1;
#endif /* CONFIG_NO_CONFIG_WRITE */
}