+++ /dev/null
-/*
- * WPA Supplicant / Configuration backend: text file
- * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING 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"
-
-
-/**
- * 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';
- 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->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK |
- WPA_KEY_MGMT_PSK_SHA256)) &&
- !ssid->psk_set) {
- wpa_printf(MSG_ERROR, "Line %d: WPA-PSK accepted for key "
- "management, but no PSK configured.", line);
- errors++;
- }
-
- 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[256], *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;
- 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;
-}
-
-
-#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)
-{
- FILE *f;
- char buf[256], *pos;
- int errors = 0, line = 0;
- struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
- struct wpa_config *config;
- int id = 0;
-
- config = wpa_config_alloc_empty(NULL, NULL);
- if (config == NULL)
- return NULL;
- wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
- f = fopen(name, "r");
- if (f == NULL) {
- 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;
- }
-#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) {
- 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);
-
- if (errors) {
- wpa_config_free(config);
- config = NULL;
- head = NULL;
- }
-
- 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);
- }
-}
-
-
-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);
- write_pairwise(f, ssid);
- write_group(f, ssid);
- write_auth_alg(f, ssid);
-#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(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(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);
-#endif /* IEEE8021X_EAPOL */
- INT(mode);
- INT(proactive_key_caching);
- INT(disabled);
- INT(peerkey);
-#ifdef CONFIG_IEEE80211W
- INT(ieee80211w);
-#endif /* CONFIG_IEEE80211W */
- STR(id_str);
-
-#undef STR
-#undef INT
-#undef INT_DEF
-}
-
-
-#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 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->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->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);
- if (config->device_type)
- fprintf(f, "device_type=%s\n", config->device_type);
- 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);
-#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);
-
-#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->filter_ssids)
- fprintf(f, "filter_ssids=%d\n", config->filter_ssids);
-}
-
-#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;
-#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 (ssid = config->ssid; ssid; ssid = ssid->next) {
- if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary)
- continue; /* do not save temporary networks */
- 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 */
-}
projects / mech_eap.git / blobdiff