LCOV - code coverage report
Current view: top level - wpa_supplicant - config_file.c (source / functions) Hit Total Coverage
Test: wpa_supplicant/hostapd combined for hwsim test run 1422976643 Lines: 526 779 67.5 %
Date: 2015-02-03 Functions: 28 29 96.6 %

          Line data    Source code
       1             : /*
       2             :  * WPA Supplicant / Configuration backend: text file
       3             :  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
       4             :  *
       5             :  * This software may be distributed under the terms of the BSD license.
       6             :  * See README for more details.
       7             :  *
       8             :  * This file implements a configuration backend for text files. All the
       9             :  * configuration information is stored in a text file that uses a format
      10             :  * described in the sample configuration file, wpa_supplicant.conf.
      11             :  */
      12             : 
      13             : #include "includes.h"
      14             : 
      15             : #include "common.h"
      16             : #include "config.h"
      17             : #include "base64.h"
      18             : #include "uuid.h"
      19             : #include "p2p/p2p.h"
      20             : #include "eap_peer/eap_methods.h"
      21             : #include "eap_peer/eap.h"
      22             : 
      23             : 
      24         108 : static int newline_terminated(const char *buf, size_t buflen)
      25             : {
      26         108 :         size_t len = os_strlen(buf);
      27         108 :         if (len == 0)
      28           0 :                 return 0;
      29         124 :         if (len == buflen - 1 && buf[buflen - 1] != '\r' &&
      30          16 :             buf[len - 1] != '\n')
      31          16 :                 return 0;
      32          92 :         return 1;
      33             : }
      34             : 
      35             : 
      36           1 : static void skip_line_end(FILE *stream)
      37             : {
      38             :         char buf[100];
      39          17 :         while (fgets(buf, sizeof(buf), stream)) {
      40          16 :                 buf[sizeof(buf) - 1] = '\0';
      41          16 :                 if (newline_terminated(buf, sizeof(buf)))
      42           2 :                         return;
      43             :         }
      44             : }
      45             : 
      46             : 
      47             : /**
      48             :  * wpa_config_get_line - Read the next configuration file line
      49             :  * @s: Buffer for the line
      50             :  * @size: The buffer length
      51             :  * @stream: File stream to read from
      52             :  * @line: Pointer to a variable storing the file line number
      53             :  * @_pos: Buffer for the pointer to the beginning of data on the text line or
      54             :  * %NULL if not needed (returned value used instead)
      55             :  * Returns: Pointer to the beginning of data on the text line or %NULL if no
      56             :  * more text lines are available.
      57             :  *
      58             :  * This function reads the next non-empty line from the configuration file and
      59             :  * removes comments. The returned string is guaranteed to be null-terminated.
      60             :  */
      61         105 : static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line,
      62             :                                   char **_pos)
      63             : {
      64             :         char *pos, *end, *sstart;
      65             : 
      66         215 :         while (fgets(s, size, stream)) {
      67          92 :                 (*line)++;
      68          92 :                 s[size - 1] = '\0';
      69          92 :                 if (!newline_terminated(s, size)) {
      70             :                         /*
      71             :                          * The line was truncated - skip rest of it to avoid
      72             :                          * confusing error messages.
      73             :                          */
      74           1 :                         wpa_printf(MSG_INFO, "Long line in configuration file "
      75             :                                    "truncated");
      76           1 :                         skip_line_end(stream);
      77             :                 }
      78          92 :                 pos = s;
      79             : 
      80             :                 /* Skip white space from the beginning of line. */
      81         212 :                 while (*pos == ' ' || *pos == '\t' || *pos == '\r')
      82          28 :                         pos++;
      83             : 
      84             :                 /* Skip comment lines and empty lines */
      85          92 :                 if (*pos == '#' || *pos == '\n' || *pos == '\0')
      86           5 :                         continue;
      87             : 
      88             :                 /*
      89             :                  * Remove # comments unless they are within a double quoted
      90             :                  * string.
      91             :                  */
      92          87 :                 sstart = os_strchr(pos, '"');
      93          87 :                 if (sstart)
      94          10 :                         sstart = os_strrchr(sstart + 1, '"');
      95          87 :                 if (!sstart)
      96          77 :                         sstart = pos;
      97          87 :                 end = os_strchr(sstart, '#');
      98          87 :                 if (end)
      99           1 :                         *end-- = '\0';
     100             :                 else
     101          86 :                         end = pos + os_strlen(pos) - 1;
     102             : 
     103             :                 /* Remove trailing white space. */
     104        1420 :                 while (end > pos &&
     105        1330 :                        (*end == '\n' || *end == ' ' || *end == '\t' ||
     106          85 :                         *end == '\r'))
     107         581 :                         *end-- = '\0';
     108             : 
     109          87 :                 if (*pos == '\0')
     110           0 :                         continue;
     111             : 
     112          87 :                 if (_pos)
     113          87 :                         *_pos = pos;
     114          87 :                 return pos;
     115             :         }
     116             : 
     117          18 :         if (_pos)
     118          18 :                 *_pos = NULL;
     119          18 :         return NULL;
     120             : }
     121             : 
     122             : 
     123           1 : static int wpa_config_validate_network(struct wpa_ssid *ssid, int line)
     124             : {
     125           1 :         int errors = 0;
     126             : 
     127           1 :         if (ssid->passphrase) {
     128           1 :                 if (ssid->psk_set) {
     129           0 :                         wpa_printf(MSG_ERROR, "Line %d: both PSK and "
     130             :                                    "passphrase configured.", line);
     131           0 :                         errors++;
     132             :                 }
     133           1 :                 wpa_config_update_psk(ssid);
     134             :         }
     135             : 
     136           2 :         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
     137           1 :             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
     138           0 :             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
     139             :                 /* Group cipher cannot be stronger than the pairwise cipher. */
     140           0 :                 wpa_printf(MSG_DEBUG, "Line %d: removed CCMP from group cipher"
     141             :                            " list since it was not allowed for pairwise "
     142             :                            "cipher", line);
     143           0 :                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
     144             :         }
     145             : 
     146           1 :         if (ssid->mode == WPAS_MODE_MESH &&
     147           0 :             (ssid->key_mgmt != WPA_KEY_MGMT_NONE &&
     148           0 :             ssid->key_mgmt != WPA_KEY_MGMT_SAE)) {
     149           0 :                 wpa_printf(MSG_ERROR,
     150             :                            "Line %d: key_mgmt for mesh network should be open or SAE",
     151             :                            line);
     152           0 :                 errors++;
     153             :         }
     154             : 
     155           1 :         return errors;
     156             : }
     157             : 
     158             : 
     159           1 : static struct wpa_ssid * wpa_config_read_network(FILE *f, int *line, int id)
     160             : {
     161             :         struct wpa_ssid *ssid;
     162           1 :         int errors = 0, end = 0;
     163             :         char buf[2000], *pos, *pos2;
     164             : 
     165           1 :         wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new network block",
     166             :                    *line);
     167           1 :         ssid = os_zalloc(sizeof(*ssid));
     168           1 :         if (ssid == NULL)
     169           0 :                 return NULL;
     170           1 :         dl_list_init(&ssid->psk_list);
     171           1 :         ssid->id = id;
     172             : 
     173           1 :         wpa_config_set_network_defaults(ssid);
     174             : 
     175          11 :         while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
     176          10 :                 if (os_strcmp(pos, "}") == 0) {
     177           1 :                         end = 1;
     178           1 :                         break;
     179             :                 }
     180             : 
     181           9 :                 pos2 = os_strchr(pos, '=');
     182           9 :                 if (pos2 == NULL) {
     183           0 :                         wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line "
     184             :                                    "'%s'.", *line, pos);
     185           0 :                         errors++;
     186           0 :                         continue;
     187             :                 }
     188             : 
     189           9 :                 *pos2++ = '\0';
     190           9 :                 if (*pos2 == '"') {
     191           2 :                         if (os_strchr(pos2 + 1, '"') == NULL) {
     192           0 :                                 wpa_printf(MSG_ERROR, "Line %d: invalid "
     193             :                                            "quotation '%s'.", *line, pos2);
     194           0 :                                 errors++;
     195           0 :                                 continue;
     196             :                         }
     197             :                 }
     198             : 
     199           9 :                 if (wpa_config_set(ssid, pos, pos2, *line) < 0)
     200           0 :                         errors++;
     201             :         }
     202             : 
     203           1 :         if (!end) {
     204           0 :                 wpa_printf(MSG_ERROR, "Line %d: network block was not "
     205             :                            "terminated properly.", *line);
     206           0 :                 errors++;
     207             :         }
     208             : 
     209           1 :         errors += wpa_config_validate_network(ssid, *line);
     210             : 
     211           1 :         if (errors) {
     212           0 :                 wpa_config_free_ssid(ssid);
     213           0 :                 ssid = NULL;
     214             :         }
     215             : 
     216           1 :         return ssid;
     217             : }
     218             : 
     219             : 
     220           1 : static struct wpa_cred * wpa_config_read_cred(FILE *f, int *line, int id)
     221             : {
     222             :         struct wpa_cred *cred;
     223           1 :         int errors = 0, end = 0;
     224             :         char buf[256], *pos, *pos2;
     225             : 
     226           1 :         wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new cred block", *line);
     227           1 :         cred = os_zalloc(sizeof(*cred));
     228           1 :         if (cred == NULL)
     229           0 :                 return NULL;
     230           1 :         cred->id = id;
     231           1 :         cred->sim_num = DEFAULT_USER_SELECTED_SIM;
     232             : 
     233          18 :         while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
     234          17 :                 if (os_strcmp(pos, "}") == 0) {
     235           1 :                         end = 1;
     236           1 :                         break;
     237             :                 }
     238             : 
     239          16 :                 pos2 = os_strchr(pos, '=');
     240          16 :                 if (pos2 == NULL) {
     241           0 :                         wpa_printf(MSG_ERROR, "Line %d: Invalid cred line "
     242             :                                    "'%s'.", *line, pos);
     243           0 :                         errors++;
     244           0 :                         continue;
     245             :                 }
     246             : 
     247          16 :                 *pos2++ = '\0';
     248          16 :                 if (*pos2 == '"') {
     249           8 :                         if (os_strchr(pos2 + 1, '"') == NULL) {
     250           0 :                                 wpa_printf(MSG_ERROR, "Line %d: invalid "
     251             :                                            "quotation '%s'.", *line, pos2);
     252           0 :                                 errors++;
     253           0 :                                 continue;
     254             :                         }
     255             :                 }
     256             : 
     257          16 :                 if (wpa_config_set_cred(cred, pos, pos2, *line) < 0)
     258           0 :                         errors++;
     259             :         }
     260             : 
     261           1 :         if (!end) {
     262           0 :                 wpa_printf(MSG_ERROR, "Line %d: cred block was not "
     263             :                            "terminated properly.", *line);
     264           0 :                 errors++;
     265             :         }
     266             : 
     267           1 :         if (errors) {
     268           0 :                 wpa_config_free_cred(cred);
     269           0 :                 cred = NULL;
     270             :         }
     271             : 
     272           1 :         return cred;
     273             : }
     274             : 
     275             : 
     276             : #ifndef CONFIG_NO_CONFIG_BLOBS
     277           1 : static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line,
     278             :                                                      const char *name)
     279             : {
     280             :         struct wpa_config_blob *blob;
     281             :         char buf[256], *pos;
     282           1 :         unsigned char *encoded = NULL, *nencoded;
     283           1 :         int end = 0;
     284           1 :         size_t encoded_len = 0, len;
     285             : 
     286           1 :         wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'",
     287             :                    *line, name);
     288             : 
     289           3 :         while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
     290           2 :                 if (os_strcmp(pos, "}") == 0) {
     291           1 :                         end = 1;
     292           1 :                         break;
     293             :                 }
     294             : 
     295           1 :                 len = os_strlen(pos);
     296           1 :                 nencoded = os_realloc(encoded, encoded_len + len);
     297           1 :                 if (nencoded == NULL) {
     298           0 :                         wpa_printf(MSG_ERROR, "Line %d: not enough memory for "
     299             :                                    "blob", *line);
     300           0 :                         os_free(encoded);
     301           0 :                         return NULL;
     302             :                 }
     303           1 :                 encoded = nencoded;
     304           1 :                 os_memcpy(encoded + encoded_len, pos, len);
     305           1 :                 encoded_len += len;
     306             :         }
     307             : 
     308           1 :         if (!end) {
     309           0 :                 wpa_printf(MSG_ERROR, "Line %d: blob was not terminated "
     310             :                            "properly", *line);
     311           0 :                 os_free(encoded);
     312           0 :                 return NULL;
     313             :         }
     314             : 
     315           1 :         blob = os_zalloc(sizeof(*blob));
     316           1 :         if (blob == NULL) {
     317           0 :                 os_free(encoded);
     318           0 :                 return NULL;
     319             :         }
     320           1 :         blob->name = os_strdup(name);
     321           1 :         blob->data = base64_decode(encoded, encoded_len, &blob->len);
     322           1 :         os_free(encoded);
     323             : 
     324           1 :         if (blob->name == NULL || blob->data == NULL) {
     325           0 :                 wpa_config_free_blob(blob);
     326           0 :                 return NULL;
     327             :         }
     328             : 
     329           1 :         return blob;
     330             : }
     331             : 
     332             : 
     333           1 : static int wpa_config_process_blob(struct wpa_config *config, FILE *f,
     334             :                                    int *line, char *bname)
     335             : {
     336             :         char *name_end;
     337             :         struct wpa_config_blob *blob;
     338             : 
     339           1 :         name_end = os_strchr(bname, '=');
     340           1 :         if (name_end == NULL) {
     341           0 :                 wpa_printf(MSG_ERROR, "Line %d: no blob name terminator",
     342             :                            *line);
     343           0 :                 return -1;
     344             :         }
     345           1 :         *name_end = '\0';
     346             : 
     347           1 :         blob = wpa_config_read_blob(f, line, bname);
     348           1 :         if (blob == NULL) {
     349           0 :                 wpa_printf(MSG_ERROR, "Line %d: failed to read blob %s",
     350             :                            *line, bname);
     351           0 :                 return -1;
     352             :         }
     353           1 :         wpa_config_set_blob(config, blob);
     354           1 :         return 0;
     355             : }
     356             : #endif /* CONFIG_NO_CONFIG_BLOBS */
     357             : 
     358             : 
     359          44 : struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp)
     360             : {
     361             :         FILE *f;
     362             :         char buf[512], *pos;
     363          44 :         int errors = 0, line = 0;
     364             :         struct wpa_ssid *ssid, *tail, *head;
     365             :         struct wpa_cred *cred, *cred_tail, *cred_head;
     366             :         struct wpa_config *config;
     367          44 :         int id = 0;
     368          44 :         int cred_id = 0;
     369             : 
     370          44 :         if (name == NULL)
     371          18 :                 return NULL;
     372          26 :         if (cfgp)
     373           0 :                 config = cfgp;
     374             :         else
     375          26 :                 config = wpa_config_alloc_empty(NULL, NULL);
     376          26 :         if (config == NULL) {
     377           0 :                 wpa_printf(MSG_ERROR, "Failed to allocate config file "
     378             :                            "structure");
     379           0 :                 return NULL;
     380             :         }
     381          26 :         tail = head = config->ssid;
     382          52 :         while (tail && tail->next)
     383           0 :                 tail = tail->next;
     384          26 :         cred_tail = cred_head = config->cred;
     385          52 :         while (cred_tail && cred_tail->next)
     386           0 :                 cred_tail = cred_tail->next;
     387             : 
     388          26 :         wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
     389          26 :         f = fopen(name, "r");
     390          26 :         if (f == NULL) {
     391           8 :                 wpa_printf(MSG_ERROR, "Failed to open config file '%s', "
     392           8 :                            "error: %s", name, strerror(errno));
     393           8 :                 os_free(config);
     394           8 :                 return NULL;
     395             :         }
     396             : 
     397          94 :         while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) {
     398          58 :                 if (os_strcmp(pos, "network={") == 0) {
     399           1 :                         ssid = wpa_config_read_network(f, &line, id++);
     400           1 :                         if (ssid == NULL) {
     401           0 :                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
     402             :                                            "parse network block.", line);
     403           0 :                                 errors++;
     404           0 :                                 continue;
     405             :                         }
     406           1 :                         if (head == NULL) {
     407           1 :                                 head = tail = ssid;
     408             :                         } else {
     409           0 :                                 tail->next = ssid;
     410           0 :                                 tail = ssid;
     411             :                         }
     412           1 :                         if (wpa_config_add_prio_network(config, ssid)) {
     413           0 :                                 wpa_printf(MSG_ERROR, "Line %d: failed to add "
     414             :                                            "network block to priority list.",
     415             :                                            line);
     416           0 :                                 errors++;
     417           0 :                                 continue;
     418             :                         }
     419          57 :                 } else if (os_strcmp(pos, "cred={") == 0) {
     420           1 :                         cred = wpa_config_read_cred(f, &line, cred_id++);
     421           1 :                         if (cred == NULL) {
     422           0 :                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
     423             :                                            "parse cred block.", line);
     424           0 :                                 errors++;
     425           0 :                                 continue;
     426             :                         }
     427           1 :                         if (cred_head == NULL) {
     428           1 :                                 cred_head = cred_tail = cred;
     429             :                         } else {
     430           0 :                                 cred_tail->next = cred;
     431           0 :                                 cred_tail = cred;
     432             :                         }
     433             : #ifndef CONFIG_NO_CONFIG_BLOBS
     434          56 :                 } else if (os_strncmp(pos, "blob-base64-", 12) == 0) {
     435           1 :                         if (wpa_config_process_blob(config, f, &line, pos + 12)
     436             :                             < 0) {
     437           0 :                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
     438             :                                            "process blob.", line);
     439           0 :                                 errors++;
     440           0 :                                 continue;
     441             :                         }
     442             : #endif /* CONFIG_NO_CONFIG_BLOBS */
     443          55 :                 } else if (wpa_config_process_global(config, pos, line) < 0) {
     444           0 :                         wpa_printf(MSG_ERROR, "Line %d: Invalid configuration "
     445             :                                    "line '%s'.", line, pos);
     446           0 :                         errors++;
     447           0 :                         continue;
     448             :                 }
     449             :         }
     450             : 
     451          18 :         fclose(f);
     452             : 
     453          18 :         config->ssid = head;
     454          18 :         wpa_config_debug_dump_networks(config);
     455          18 :         config->cred = cred_head;
     456             : 
     457             : #ifndef WPA_IGNORE_CONFIG_ERRORS
     458          18 :         if (errors) {
     459           0 :                 wpa_config_free(config);
     460           0 :                 config = NULL;
     461           0 :                 head = NULL;
     462             :         }
     463             : #endif /* WPA_IGNORE_CONFIG_ERRORS */
     464             : 
     465          18 :         return config;
     466             : }
     467             : 
     468             : 
     469             : #ifndef CONFIG_NO_CONFIG_WRITE
     470             : 
     471         129 : static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid)
     472             : {
     473         129 :         char *value = wpa_config_get(ssid, field);
     474         129 :         if (value == NULL)
     475         255 :                 return;
     476           3 :         fprintf(f, "\t%s=%s\n", field, value);
     477           3 :         os_free(value);
     478             : }
     479             : 
     480             : 
     481          78 : static void write_int(FILE *f, const char *field, int value, int def)
     482             : {
     483          78 :         if (value == def)
     484         153 :                 return;
     485           3 :         fprintf(f, "\t%s=%d\n", field, value);
     486             : }
     487             : 
     488             : 
     489           3 : static void write_bssid(FILE *f, struct wpa_ssid *ssid)
     490             : {
     491           3 :         char *value = wpa_config_get(ssid, "bssid");
     492           3 :         if (value == NULL)
     493           3 :                 return;
     494           3 :         fprintf(f, "\tbssid=%s\n", value);
     495           3 :         os_free(value);
     496             : }
     497             : 
     498             : 
     499           3 : static void write_psk(FILE *f, struct wpa_ssid *ssid)
     500             : {
     501           3 :         char *value = wpa_config_get(ssid, "psk");
     502           3 :         if (value == NULL)
     503           3 :                 return;
     504           3 :         fprintf(f, "\tpsk=%s\n", value);
     505           3 :         os_free(value);
     506             : }
     507             : 
     508             : 
     509           3 : static void write_proto(FILE *f, struct wpa_ssid *ssid)
     510             : {
     511             :         char *value;
     512             : 
     513           3 :         if (ssid->proto == DEFAULT_PROTO)
     514           0 :                 return;
     515             : 
     516           3 :         value = wpa_config_get(ssid, "proto");
     517           3 :         if (value == NULL)
     518           0 :                 return;
     519           3 :         if (value[0])
     520           3 :                 fprintf(f, "\tproto=%s\n", value);
     521           3 :         os_free(value);
     522             : }
     523             : 
     524             : 
     525           3 : static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid)
     526             : {
     527             :         char *value;
     528             : 
     529           3 :         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
     530           0 :                 return;
     531             : 
     532           3 :         value = wpa_config_get(ssid, "key_mgmt");
     533           3 :         if (value == NULL)
     534           0 :                 return;
     535           3 :         if (value[0])
     536           3 :                 fprintf(f, "\tkey_mgmt=%s\n", value);
     537           3 :         os_free(value);
     538             : }
     539             : 
     540             : 
     541           3 : static void write_pairwise(FILE *f, struct wpa_ssid *ssid)
     542             : {
     543             :         char *value;
     544             : 
     545           3 :         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
     546           0 :                 return;
     547             : 
     548           3 :         value = wpa_config_get(ssid, "pairwise");
     549           3 :         if (value == NULL)
     550           0 :                 return;
     551           3 :         if (value[0])
     552           3 :                 fprintf(f, "\tpairwise=%s\n", value);
     553           3 :         os_free(value);
     554             : }
     555             : 
     556             : 
     557           3 : static void write_group(FILE *f, struct wpa_ssid *ssid)
     558             : {
     559             :         char *value;
     560             : 
     561           3 :         if (ssid->group_cipher == DEFAULT_GROUP)
     562           0 :                 return;
     563             : 
     564           3 :         value = wpa_config_get(ssid, "group");
     565           3 :         if (value == NULL)
     566           0 :                 return;
     567           3 :         if (value[0])
     568           3 :                 fprintf(f, "\tgroup=%s\n", value);
     569           3 :         os_free(value);
     570             : }
     571             : 
     572             : 
     573           3 : static void write_auth_alg(FILE *f, struct wpa_ssid *ssid)
     574             : {
     575             :         char *value;
     576             : 
     577           3 :         if (ssid->auth_alg == 0)
     578           0 :                 return;
     579             : 
     580           3 :         value = wpa_config_get(ssid, "auth_alg");
     581           3 :         if (value == NULL)
     582           0 :                 return;
     583           3 :         if (value[0])
     584           3 :                 fprintf(f, "\tauth_alg=%s\n", value);
     585           3 :         os_free(value);
     586             : }
     587             : 
     588             : 
     589             : #ifdef IEEE8021X_EAPOL
     590           3 : static void write_eap(FILE *f, struct wpa_ssid *ssid)
     591             : {
     592             :         char *value;
     593             : 
     594           3 :         value = wpa_config_get(ssid, "eap");
     595           3 :         if (value == NULL)
     596           6 :                 return;
     597             : 
     598           0 :         if (value[0])
     599           0 :                 fprintf(f, "\teap=%s\n", value);
     600           0 :         os_free(value);
     601             : }
     602             : #endif /* IEEE8021X_EAPOL */
     603             : 
     604             : 
     605          12 : static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid)
     606             : {
     607             :         char field[20], *value;
     608             :         int res;
     609             : 
     610          12 :         res = os_snprintf(field, sizeof(field), "wep_key%d", idx);
     611          12 :         if (os_snprintf_error(sizeof(field), res))
     612          12 :                 return;
     613          12 :         value = wpa_config_get(ssid, field);
     614          12 :         if (value) {
     615           0 :                 fprintf(f, "\t%s=%s\n", field, value);
     616           0 :                 os_free(value);
     617             :         }
     618             : }
     619             : 
     620             : 
     621             : #ifdef CONFIG_P2P
     622             : 
     623           3 : static void write_go_p2p_dev_addr(FILE *f, struct wpa_ssid *ssid)
     624             : {
     625           3 :         char *value = wpa_config_get(ssid, "go_p2p_dev_addr");
     626           3 :         if (value == NULL)
     627           6 :                 return;
     628           0 :         fprintf(f, "\tgo_p2p_dev_addr=%s\n", value);
     629           0 :         os_free(value);
     630             : }
     631             : 
     632           3 : static void write_p2p_client_list(FILE *f, struct wpa_ssid *ssid)
     633             : {
     634           3 :         char *value = wpa_config_get(ssid, "p2p_client_list");
     635           3 :         if (value == NULL)
     636           6 :                 return;
     637           0 :         fprintf(f, "\tp2p_client_list=%s\n", value);
     638           0 :         os_free(value);
     639             : }
     640             : 
     641             : 
     642           3 : static void write_psk_list(FILE *f, struct wpa_ssid *ssid)
     643             : {
     644             :         struct psk_list_entry *psk;
     645             :         char hex[32 * 2 + 1];
     646             : 
     647           3 :         dl_list_for_each(psk, &ssid->psk_list, struct psk_list_entry, list) {
     648           0 :                 wpa_snprintf_hex(hex, sizeof(hex), psk->psk, sizeof(psk->psk));
     649           0 :                 fprintf(f, "\tpsk_list=%s" MACSTR "-%s\n",
     650           0 :                         psk->p2p ? "P2P-" : "", MAC2STR(psk->addr), hex);
     651             :         }
     652           3 : }
     653             : 
     654             : #endif /* CONFIG_P2P */
     655             : 
     656             : 
     657           3 : static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
     658             : {
     659             :         int i;
     660             : 
     661             : #define STR(t) write_str(f, #t, ssid)
     662             : #define INT(t) write_int(f, #t, ssid->t, 0)
     663             : #define INTe(t) write_int(f, #t, ssid->eap.t, 0)
     664             : #define INT_DEF(t, def) write_int(f, #t, ssid->t, def)
     665             : #define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def)
     666             : 
     667           3 :         STR(ssid);
     668           3 :         INT(scan_ssid);
     669           3 :         write_bssid(f, ssid);
     670           3 :         write_psk(f, ssid);
     671           3 :         write_proto(f, ssid);
     672           3 :         write_key_mgmt(f, ssid);
     673           3 :         INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD);
     674           3 :         write_pairwise(f, ssid);
     675           3 :         write_group(f, ssid);
     676           3 :         write_auth_alg(f, ssid);
     677           3 :         STR(bgscan);
     678           3 :         STR(autoscan);
     679           3 :         STR(scan_freq);
     680             : #ifdef IEEE8021X_EAPOL
     681           3 :         write_eap(f, ssid);
     682           3 :         STR(identity);
     683           3 :         STR(anonymous_identity);
     684           3 :         STR(password);
     685           3 :         STR(ca_cert);
     686           3 :         STR(ca_path);
     687           3 :         STR(client_cert);
     688           3 :         STR(private_key);
     689           3 :         STR(private_key_passwd);
     690           3 :         STR(dh_file);
     691           3 :         STR(subject_match);
     692           3 :         STR(altsubject_match);
     693           3 :         STR(domain_suffix_match);
     694           3 :         STR(domain_match);
     695           3 :         STR(ca_cert2);
     696           3 :         STR(ca_path2);
     697           3 :         STR(client_cert2);
     698           3 :         STR(private_key2);
     699           3 :         STR(private_key2_passwd);
     700           3 :         STR(dh_file2);
     701           3 :         STR(subject_match2);
     702           3 :         STR(altsubject_match2);
     703           3 :         STR(domain_suffix_match2);
     704           3 :         STR(domain_match2);
     705           3 :         STR(phase1);
     706           3 :         STR(phase2);
     707           3 :         STR(pcsc);
     708           3 :         STR(pin);
     709           3 :         STR(engine_id);
     710           3 :         STR(key_id);
     711           3 :         STR(cert_id);
     712           3 :         STR(ca_cert_id);
     713           3 :         STR(key2_id);
     714           3 :         STR(pin2);
     715           3 :         STR(engine2_id);
     716           3 :         STR(cert2_id);
     717           3 :         STR(ca_cert2_id);
     718           3 :         INTe(engine);
     719           3 :         INTe(engine2);
     720           3 :         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
     721           3 :         INTe(erp);
     722             : #endif /* IEEE8021X_EAPOL */
     723          15 :         for (i = 0; i < 4; i++)
     724          12 :                 write_wep_key(f, i, ssid);
     725           3 :         INT(wep_tx_keyidx);
     726           3 :         INT(priority);
     727             : #ifdef IEEE8021X_EAPOL
     728           3 :         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
     729           3 :         STR(pac_file);
     730           3 :         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
     731           3 :         INTe(ocsp);
     732           3 :         INT_DEFe(sim_num, DEFAULT_USER_SELECTED_SIM);
     733             : #endif /* IEEE8021X_EAPOL */
     734           3 :         INT(mode);
     735           3 :         INT(frequency);
     736           3 :         write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1);
     737           3 :         INT(disabled);
     738           3 :         INT(peerkey);
     739             : #ifdef CONFIG_IEEE80211W
     740           3 :         write_int(f, "ieee80211w", ssid->ieee80211w,
     741             :                   MGMT_FRAME_PROTECTION_DEFAULT);
     742             : #endif /* CONFIG_IEEE80211W */
     743           3 :         STR(id_str);
     744             : #ifdef CONFIG_P2P
     745           3 :         write_go_p2p_dev_addr(f, ssid);
     746           3 :         write_p2p_client_list(f, ssid);
     747           3 :         write_psk_list(f, ssid);
     748             : #endif /* CONFIG_P2P */
     749           3 :         INT(dtim_period);
     750           3 :         INT(beacon_int);
     751             : #ifdef CONFIG_MACSEC
     752             :         INT(macsec_policy);
     753             : #endif /* CONFIG_MACSEC */
     754             : #ifdef CONFIG_HS20
     755           3 :         INT(update_identifier);
     756             : #endif /* CONFIG_HS20 */
     757           3 :         write_int(f, "mac_addr", ssid->mac_addr, -1);
     758             : #ifdef CONFIG_MESH
     759           3 :         STR(mesh_basic_rates);
     760           3 :         INT_DEF(dot11MeshMaxRetries, DEFAULT_MESH_MAX_RETRIES);
     761           3 :         INT_DEF(dot11MeshRetryTimeout, DEFAULT_MESH_RETRY_TIMEOUT);
     762           3 :         INT_DEF(dot11MeshConfirmTimeout, DEFAULT_MESH_CONFIRM_TIMEOUT);
     763           3 :         INT_DEF(dot11MeshHoldingTimeout, DEFAULT_MESH_HOLDING_TIMEOUT);
     764             : #endif /* CONFIG_MESH */
     765             : 
     766             : #undef STR
     767             : #undef INT
     768             : #undef INT_DEF
     769           3 : }
     770             : 
     771             : 
     772           3 : static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred)
     773             : {
     774             :         size_t i;
     775             : 
     776           3 :         if (cred->priority)
     777           3 :                 fprintf(f, "\tpriority=%d\n", cred->priority);
     778           3 :         if (cred->pcsc)
     779           0 :                 fprintf(f, "\tpcsc=%d\n", cred->pcsc);
     780           3 :         if (cred->realm)
     781           3 :                 fprintf(f, "\trealm=\"%s\"\n", cred->realm);
     782           3 :         if (cred->username)
     783           3 :                 fprintf(f, "\tusername=\"%s\"\n", cred->username);
     784           3 :         if (cred->password && cred->ext_password)
     785           0 :                 fprintf(f, "\tpassword=ext:%s\n", cred->password);
     786           3 :         else if (cred->password)
     787           3 :                 fprintf(f, "\tpassword=\"%s\"\n", cred->password);
     788           3 :         if (cred->ca_cert)
     789           3 :                 fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert);
     790           3 :         if (cred->client_cert)
     791           0 :                 fprintf(f, "\tclient_cert=\"%s\"\n", cred->client_cert);
     792           3 :         if (cred->private_key)
     793           0 :                 fprintf(f, "\tprivate_key=\"%s\"\n", cred->private_key);
     794           3 :         if (cred->private_key_passwd)
     795           0 :                 fprintf(f, "\tprivate_key_passwd=\"%s\"\n",
     796             :                         cred->private_key_passwd);
     797           3 :         if (cred->imsi)
     798           0 :                 fprintf(f, "\timsi=\"%s\"\n", cred->imsi);
     799           3 :         if (cred->milenage)
     800           0 :                 fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage);
     801           6 :         for (i = 0; i < cred->num_domain; i++)
     802           3 :                 fprintf(f, "\tdomain=\"%s\"\n", cred->domain[i]);
     803           3 :         if (cred->domain_suffix_match)
     804           3 :                 fprintf(f, "\tdomain_suffix_match=\"%s\"\n",
     805             :                         cred->domain_suffix_match);
     806           3 :         if (cred->roaming_consortium_len) {
     807           3 :                 fprintf(f, "\troaming_consortium=");
     808          12 :                 for (i = 0; i < cred->roaming_consortium_len; i++)
     809           9 :                         fprintf(f, "%02x", cred->roaming_consortium[i]);
     810           3 :                 fprintf(f, "\n");
     811             :         }
     812           3 :         if (cred->eap_method) {
     813             :                 const char *name;
     814           3 :                 name = eap_get_name(cred->eap_method[0].vendor,
     815           3 :                                     cred->eap_method[0].method);
     816           3 :                 if (name)
     817           3 :                         fprintf(f, "\teap=%s\n", name);
     818             :         }
     819           3 :         if (cred->phase1)
     820           0 :                 fprintf(f, "\tphase1=\"%s\"\n", cred->phase1);
     821           3 :         if (cred->phase2)
     822           0 :                 fprintf(f, "\tphase2=\"%s\"\n", cred->phase2);
     823           3 :         if (cred->excluded_ssid) {
     824             :                 size_t j;
     825           0 :                 for (i = 0; i < cred->num_excluded_ssid; i++) {
     826           0 :                         struct excluded_ssid *e = &cred->excluded_ssid[i];
     827           0 :                         fprintf(f, "\texcluded_ssid=");
     828           0 :                         for (j = 0; j < e->ssid_len; j++)
     829           0 :                                 fprintf(f, "%02x", e->ssid[j]);
     830           0 :                         fprintf(f, "\n");
     831             :                 }
     832             :         }
     833           3 :         if (cred->roaming_partner) {
     834           6 :                 for (i = 0; i < cred->num_roaming_partner; i++) {
     835           3 :                         struct roaming_partner *p = &cred->roaming_partner[i];
     836           6 :                         fprintf(f, "\troaming_partner=\"%s,%d,%u,%s\"\n",
     837           6 :                                 p->fqdn, p->exact_match, p->priority,
     838           3 :                                 p->country);
     839             :                 }
     840             :         }
     841           3 :         if (cred->update_identifier)
     842           3 :                 fprintf(f, "\tupdate_identifier=%d\n", cred->update_identifier);
     843             : 
     844           3 :         if (cred->provisioning_sp)
     845           3 :                 fprintf(f, "\tprovisioning_sp=\"%s\"\n", cred->provisioning_sp);
     846           3 :         if (cred->sp_priority)
     847           3 :                 fprintf(f, "\tsp_priority=%d\n", cred->sp_priority);
     848             : 
     849           3 :         if (cred->min_dl_bandwidth_home)
     850           0 :                 fprintf(f, "\tmin_dl_bandwidth_home=%u\n",
     851             :                         cred->min_dl_bandwidth_home);
     852           3 :         if (cred->min_ul_bandwidth_home)
     853           0 :                 fprintf(f, "\tmin_ul_bandwidth_home=%u\n",
     854             :                         cred->min_ul_bandwidth_home);
     855           3 :         if (cred->min_dl_bandwidth_roaming)
     856           0 :                 fprintf(f, "\tmin_dl_bandwidth_roaming=%u\n",
     857             :                         cred->min_dl_bandwidth_roaming);
     858           3 :         if (cred->min_ul_bandwidth_roaming)
     859           0 :                 fprintf(f, "\tmin_ul_bandwidth_roaming=%u\n",
     860             :                         cred->min_ul_bandwidth_roaming);
     861             : 
     862           3 :         if (cred->max_bss_load)
     863           0 :                 fprintf(f, "\tmax_bss_load=%u\n",
     864             :                         cred->max_bss_load);
     865             : 
     866           3 :         if (cred->ocsp)
     867           3 :                 fprintf(f, "\tocsp=%d\n", cred->ocsp);
     868             : 
     869           3 :         if (cred->num_req_conn_capab) {
     870           6 :                 for (i = 0; i < cred->num_req_conn_capab; i++) {
     871             :                         int *ports;
     872             : 
     873           3 :                         fprintf(f, "\treq_conn_capab=%u",
     874           3 :                                 cred->req_conn_capab_proto[i]);
     875           3 :                         ports = cred->req_conn_capab_port[i];
     876           3 :                         if (ports) {
     877             :                                 int j;
     878           6 :                                 for (j = 0; ports[j] != -1; j++) {
     879           3 :                                         fprintf(f, "%s%d", j > 0 ? "," : ":",
     880           3 :                                                 ports[j]);
     881             :                                 }
     882             :                         }
     883           3 :                         fprintf(f, "\n");
     884             :                 }
     885             :         }
     886             : 
     887           3 :         if (cred->required_roaming_consortium_len) {
     888           3 :                 fprintf(f, "\trequired_roaming_consortium=");
     889          12 :                 for (i = 0; i < cred->required_roaming_consortium_len; i++)
     890           9 :                         fprintf(f, "%02x",
     891           9 :                                 cred->required_roaming_consortium[i]);
     892           3 :                 fprintf(f, "\n");
     893             :         }
     894             : 
     895           3 :         if (cred->sim_num != DEFAULT_USER_SELECTED_SIM)
     896           0 :                 fprintf(f, "\tsim_num=%d\n", cred->sim_num);
     897           3 : }
     898             : 
     899             : 
     900             : #ifndef CONFIG_NO_CONFIG_BLOBS
     901           3 : static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob)
     902             : {
     903             :         unsigned char *encoded;
     904             : 
     905           3 :         encoded = base64_encode(blob->data, blob->len, NULL);
     906           3 :         if (encoded == NULL)
     907           0 :                 return -1;
     908             : 
     909           3 :         fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded);
     910           3 :         os_free(encoded);
     911           3 :         return 0;
     912             : }
     913             : #endif /* CONFIG_NO_CONFIG_BLOBS */
     914             : 
     915             : 
     916           0 : static void write_global_bin(FILE *f, const char *field,
     917             :                              const struct wpabuf *val)
     918             : {
     919             :         size_t i;
     920             :         const u8 *pos;
     921             : 
     922           0 :         if (val == NULL)
     923           0 :                 return;
     924             : 
     925           0 :         fprintf(f, "%s=", field);
     926           0 :         pos = wpabuf_head(val);
     927           0 :         for (i = 0; i < wpabuf_len(val); i++)
     928           0 :                 fprintf(f, "%02X", *pos++);
     929           0 :         fprintf(f, "\n");
     930             : }
     931             : 
     932             : 
     933           3 : static void wpa_config_write_global(FILE *f, struct wpa_config *config)
     934             : {
     935             : #ifdef CONFIG_CTRL_IFACE
     936           3 :         if (config->ctrl_interface)
     937           3 :                 fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface);
     938           3 :         if (config->ctrl_interface_group)
     939           0 :                 fprintf(f, "ctrl_interface_group=%s\n",
     940             :                         config->ctrl_interface_group);
     941             : #endif /* CONFIG_CTRL_IFACE */
     942           3 :         if (config->eapol_version != DEFAULT_EAPOL_VERSION)
     943           3 :                 fprintf(f, "eapol_version=%d\n", config->eapol_version);
     944           3 :         if (config->ap_scan != DEFAULT_AP_SCAN)
     945           0 :                 fprintf(f, "ap_scan=%d\n", config->ap_scan);
     946           3 :         if (config->disable_scan_offload)
     947           0 :                 fprintf(f, "disable_scan_offload=%d\n",
     948             :                         config->disable_scan_offload);
     949           3 :         if (config->fast_reauth != DEFAULT_FAST_REAUTH)
     950           0 :                 fprintf(f, "fast_reauth=%d\n", config->fast_reauth);
     951           3 :         if (config->opensc_engine_path)
     952           0 :                 fprintf(f, "opensc_engine_path=%s\n",
     953             :                         config->opensc_engine_path);
     954           3 :         if (config->pkcs11_engine_path)
     955           0 :                 fprintf(f, "pkcs11_engine_path=%s\n",
     956             :                         config->pkcs11_engine_path);
     957           3 :         if (config->pkcs11_module_path)
     958           0 :                 fprintf(f, "pkcs11_module_path=%s\n",
     959             :                         config->pkcs11_module_path);
     960           3 :         if (config->openssl_ciphers)
     961           0 :                 fprintf(f, "openssl_ciphers=%s\n", config->openssl_ciphers);
     962           3 :         if (config->pcsc_reader)
     963           0 :                 fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader);
     964           3 :         if (config->pcsc_pin)
     965           0 :                 fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin);
     966           3 :         if (config->driver_param)
     967           0 :                 fprintf(f, "driver_param=%s\n", config->driver_param);
     968           3 :         if (config->dot11RSNAConfigPMKLifetime)
     969           0 :                 fprintf(f, "dot11RSNAConfigPMKLifetime=%d\n",
     970             :                         config->dot11RSNAConfigPMKLifetime);
     971           3 :         if (config->dot11RSNAConfigPMKReauthThreshold)
     972           0 :                 fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%d\n",
     973             :                         config->dot11RSNAConfigPMKReauthThreshold);
     974           3 :         if (config->dot11RSNAConfigSATimeout)
     975           0 :                 fprintf(f, "dot11RSNAConfigSATimeout=%d\n",
     976             :                         config->dot11RSNAConfigSATimeout);
     977           3 :         if (config->update_config)
     978           3 :                 fprintf(f, "update_config=%d\n", config->update_config);
     979             : #ifdef CONFIG_WPS
     980           3 :         if (!is_nil_uuid(config->uuid)) {
     981             :                 char buf[40];
     982           0 :                 uuid_bin2str(config->uuid, buf, sizeof(buf));
     983           0 :                 fprintf(f, "uuid=%s\n", buf);
     984             :         }
     985           3 :         if (config->device_name)
     986           3 :                 fprintf(f, "device_name=%s\n", config->device_name);
     987           3 :         if (config->manufacturer)
     988           0 :                 fprintf(f, "manufacturer=%s\n", config->manufacturer);
     989           3 :         if (config->model_name)
     990           0 :                 fprintf(f, "model_name=%s\n", config->model_name);
     991           3 :         if (config->model_number)
     992           0 :                 fprintf(f, "model_number=%s\n", config->model_number);
     993           3 :         if (config->serial_number)
     994           0 :                 fprintf(f, "serial_number=%s\n", config->serial_number);
     995             :         {
     996             :                 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
     997           3 :                 buf = wps_dev_type_bin2str(config->device_type,
     998             :                                            _buf, sizeof(_buf));
     999           3 :                 if (os_strcmp(buf, "0-00000000-0") != 0)
    1000           0 :                         fprintf(f, "device_type=%s\n", buf);
    1001             :         }
    1002           3 :         if (WPA_GET_BE32(config->os_version))
    1003           0 :                 fprintf(f, "os_version=%08x\n",
    1004           0 :                         WPA_GET_BE32(config->os_version));
    1005           3 :         if (config->config_methods)
    1006           0 :                 fprintf(f, "config_methods=%s\n", config->config_methods);
    1007           3 :         if (config->wps_cred_processing)
    1008           0 :                 fprintf(f, "wps_cred_processing=%d\n",
    1009             :                         config->wps_cred_processing);
    1010           3 :         if (config->wps_vendor_ext_m1) {
    1011           0 :                 int i, len = wpabuf_len(config->wps_vendor_ext_m1);
    1012           0 :                 const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1);
    1013           0 :                 if (len > 0) {
    1014           0 :                         fprintf(f, "wps_vendor_ext_m1=");
    1015           0 :                         for (i = 0; i < len; i++)
    1016           0 :                                 fprintf(f, "%02x", *p++);
    1017           0 :                         fprintf(f, "\n");
    1018             :                 }
    1019             :         }
    1020             : #endif /* CONFIG_WPS */
    1021             : #ifdef CONFIG_P2P
    1022           3 :         if (config->p2p_listen_reg_class)
    1023           0 :                 fprintf(f, "p2p_listen_reg_class=%u\n",
    1024             :                         config->p2p_listen_reg_class);
    1025           3 :         if (config->p2p_listen_channel)
    1026           0 :                 fprintf(f, "p2p_listen_channel=%u\n",
    1027             :                         config->p2p_listen_channel);
    1028           3 :         if (config->p2p_oper_reg_class)
    1029           0 :                 fprintf(f, "p2p_oper_reg_class=%u\n",
    1030             :                         config->p2p_oper_reg_class);
    1031           3 :         if (config->p2p_oper_channel)
    1032           0 :                 fprintf(f, "p2p_oper_channel=%u\n", config->p2p_oper_channel);
    1033           3 :         if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT)
    1034           0 :                 fprintf(f, "p2p_go_intent=%u\n", config->p2p_go_intent);
    1035           3 :         if (config->p2p_ssid_postfix)
    1036           0 :                 fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix);
    1037           3 :         if (config->persistent_reconnect)
    1038           0 :                 fprintf(f, "persistent_reconnect=%u\n",
    1039             :                         config->persistent_reconnect);
    1040           3 :         if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS)
    1041           0 :                 fprintf(f, "p2p_intra_bss=%u\n", config->p2p_intra_bss);
    1042           3 :         if (config->p2p_group_idle)
    1043           0 :                 fprintf(f, "p2p_group_idle=%u\n", config->p2p_group_idle);
    1044           3 :         if (config->p2p_passphrase_len)
    1045           0 :                 fprintf(f, "p2p_passphrase_len=%u\n",
    1046             :                         config->p2p_passphrase_len);
    1047           3 :         if (config->p2p_pref_chan) {
    1048             :                 unsigned int i;
    1049           0 :                 fprintf(f, "p2p_pref_chan=");
    1050           0 :                 for (i = 0; i < config->num_p2p_pref_chan; i++) {
    1051           0 :                         fprintf(f, "%s%u:%u", i > 0 ? "," : "",
    1052           0 :                                 config->p2p_pref_chan[i].op_class,
    1053           0 :                                 config->p2p_pref_chan[i].chan);
    1054             :                 }
    1055           0 :                 fprintf(f, "\n");
    1056             :         }
    1057           3 :         if (config->p2p_no_go_freq.num) {
    1058           0 :                 char *val = freq_range_list_str(&config->p2p_no_go_freq);
    1059           0 :                 if (val) {
    1060           0 :                         fprintf(f, "p2p_no_go_freq=%s\n", val);
    1061           0 :                         os_free(val);
    1062             :                 }
    1063             :         }
    1064           3 :         if (config->p2p_add_cli_chan)
    1065           0 :                 fprintf(f, "p2p_add_cli_chan=%d\n", config->p2p_add_cli_chan);
    1066           3 :         if (config->p2p_optimize_listen_chan !=
    1067             :             DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN)
    1068           0 :                 fprintf(f, "p2p_optimize_listen_chan=%d\n",
    1069             :                         config->p2p_optimize_listen_chan);
    1070           3 :         if (config->p2p_go_ht40)
    1071           0 :                 fprintf(f, "p2p_go_ht40=%u\n", config->p2p_go_ht40);
    1072           3 :         if (config->p2p_go_vht)
    1073           0 :                 fprintf(f, "p2p_go_vht=%u\n", config->p2p_go_vht);
    1074           3 :         if (config->p2p_disabled)
    1075           0 :                 fprintf(f, "p2p_disabled=%u\n", config->p2p_disabled);
    1076           3 :         if (config->p2p_no_group_iface)
    1077           0 :                 fprintf(f, "p2p_no_group_iface=%u\n",
    1078             :                         config->p2p_no_group_iface);
    1079           3 :         if (config->p2p_ignore_shared_freq)
    1080           0 :                 fprintf(f, "p2p_ignore_shared_freq=%u\n",
    1081             :                         config->p2p_ignore_shared_freq);
    1082             : #endif /* CONFIG_P2P */
    1083           3 :         if (config->country[0] && config->country[1]) {
    1084           0 :                 fprintf(f, "country=%c%c\n",
    1085           0 :                         config->country[0], config->country[1]);
    1086             :         }
    1087           3 :         if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT)
    1088           0 :                 fprintf(f, "bss_max_count=%u\n", config->bss_max_count);
    1089           3 :         if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE)
    1090           0 :                 fprintf(f, "bss_expiration_age=%u\n",
    1091             :                         config->bss_expiration_age);
    1092           3 :         if (config->bss_expiration_scan_count !=
    1093             :             DEFAULT_BSS_EXPIRATION_SCAN_COUNT)
    1094           0 :                 fprintf(f, "bss_expiration_scan_count=%u\n",
    1095             :                         config->bss_expiration_scan_count);
    1096           3 :         if (config->filter_ssids)
    1097           0 :                 fprintf(f, "filter_ssids=%d\n", config->filter_ssids);
    1098           3 :         if (config->max_num_sta != DEFAULT_MAX_NUM_STA)
    1099           0 :                 fprintf(f, "max_num_sta=%u\n", config->max_num_sta);
    1100           3 :         if (config->disassoc_low_ack)
    1101           0 :                 fprintf(f, "disassoc_low_ack=%u\n", config->disassoc_low_ack);
    1102             : #ifdef CONFIG_HS20
    1103           3 :         if (config->hs20)
    1104           0 :                 fprintf(f, "hs20=1\n");
    1105             : #endif /* CONFIG_HS20 */
    1106             : #ifdef CONFIG_INTERWORKING
    1107           3 :         if (config->interworking)
    1108           0 :                 fprintf(f, "interworking=%u\n", config->interworking);
    1109           3 :         if (!is_zero_ether_addr(config->hessid))
    1110           0 :                 fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid));
    1111           3 :         if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE)
    1112           0 :                 fprintf(f, "access_network_type=%d\n",
    1113             :                         config->access_network_type);
    1114             : #endif /* CONFIG_INTERWORKING */
    1115           3 :         if (config->pbc_in_m1)
    1116           0 :                 fprintf(f, "pbc_in_m1=%u\n", config->pbc_in_m1);
    1117           3 :         if (config->wps_nfc_pw_from_config) {
    1118           0 :                 if (config->wps_nfc_dev_pw_id)
    1119           0 :                         fprintf(f, "wps_nfc_dev_pw_id=%d\n",
    1120             :                                 config->wps_nfc_dev_pw_id);
    1121           0 :                 write_global_bin(f, "wps_nfc_dh_pubkey",
    1122           0 :                                  config->wps_nfc_dh_pubkey);
    1123           0 :                 write_global_bin(f, "wps_nfc_dh_privkey",
    1124           0 :                                  config->wps_nfc_dh_privkey);
    1125           0 :                 write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw);
    1126             :         }
    1127             : 
    1128           3 :         if (config->ext_password_backend)
    1129           0 :                 fprintf(f, "ext_password_backend=%s\n",
    1130             :                         config->ext_password_backend);
    1131           3 :         if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY)
    1132           0 :                 fprintf(f, "p2p_go_max_inactivity=%d\n",
    1133             :                         config->p2p_go_max_inactivity);
    1134           3 :         if (config->auto_interworking)
    1135           0 :                 fprintf(f, "auto_interworking=%d\n",
    1136             :                         config->auto_interworking);
    1137           3 :         if (config->okc)
    1138           0 :                 fprintf(f, "okc=%d\n", config->okc);
    1139           3 :         if (config->pmf)
    1140           0 :                 fprintf(f, "pmf=%d\n", config->pmf);
    1141           3 :         if (config->dtim_period)
    1142           0 :                 fprintf(f, "dtim_period=%d\n", config->dtim_period);
    1143           3 :         if (config->beacon_int)
    1144           0 :                 fprintf(f, "beacon_int=%d\n", config->beacon_int);
    1145             : 
    1146           3 :         if (config->sae_groups) {
    1147             :                 int i;
    1148           0 :                 fprintf(f, "sae_groups=");
    1149           0 :                 for (i = 0; config->sae_groups[i] >= 0; i++) {
    1150           0 :                         fprintf(f, "%s%d", i > 0 ? " " : "",
    1151           0 :                                 config->sae_groups[i]);
    1152             :                 }
    1153           0 :                 fprintf(f, "\n");
    1154             :         }
    1155             : 
    1156           3 :         if (config->ap_vendor_elements) {
    1157           0 :                 int i, len = wpabuf_len(config->ap_vendor_elements);
    1158           0 :                 const u8 *p = wpabuf_head_u8(config->ap_vendor_elements);
    1159           0 :                 if (len > 0) {
    1160           0 :                         fprintf(f, "ap_vendor_elements=");
    1161           0 :                         for (i = 0; i < len; i++)
    1162           0 :                                 fprintf(f, "%02x", *p++);
    1163           0 :                         fprintf(f, "\n");
    1164             :                 }
    1165             :         }
    1166             : 
    1167           3 :         if (config->ignore_old_scan_res)
    1168           0 :                 fprintf(f, "ignore_old_scan_res=%d\n",
    1169             :                         config->ignore_old_scan_res);
    1170             : 
    1171           3 :         if (config->freq_list && config->freq_list[0]) {
    1172             :                 int i;
    1173           0 :                 fprintf(f, "freq_list=");
    1174           0 :                 for (i = 0; config->freq_list[i]; i++) {
    1175           0 :                         fprintf(f, "%s%u", i > 0 ? " " : "",
    1176           0 :                                 config->freq_list[i]);
    1177             :                 }
    1178           0 :                 fprintf(f, "\n");
    1179             :         }
    1180           3 :         if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ)
    1181           0 :                 fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq);
    1182             : 
    1183           3 :         if (config->sched_scan_interval)
    1184           0 :                 fprintf(f, "sched_scan_interval=%u\n",
    1185             :                         config->sched_scan_interval);
    1186             : 
    1187           3 :         if (config->external_sim)
    1188           0 :                 fprintf(f, "external_sim=%d\n", config->external_sim);
    1189             : 
    1190           3 :         if (config->tdls_external_control)
    1191           0 :                 fprintf(f, "tdls_external_control=%d\n",
    1192             :                         config->tdls_external_control);
    1193             : 
    1194           3 :         if (config->wowlan_triggers)
    1195           0 :                 fprintf(f, "wowlan_triggers=%s\n",
    1196             :                         config->wowlan_triggers);
    1197             : 
    1198           3 :         if (config->bgscan)
    1199           0 :                 fprintf(f, "bgscan=\"%s\"\n", config->bgscan);
    1200             : 
    1201           3 :         if (config->p2p_search_delay != DEFAULT_P2P_SEARCH_DELAY)
    1202           0 :                 fprintf(f, "p2p_search_delay=%u\n",
    1203             :                         config->p2p_search_delay);
    1204             : 
    1205           3 :         if (config->mac_addr)
    1206           0 :                 fprintf(f, "mac_addr=%d\n", config->mac_addr);
    1207             : 
    1208           3 :         if (config->rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
    1209           0 :                 fprintf(f, "rand_addr_lifetime=%u\n",
    1210             :                         config->rand_addr_lifetime);
    1211             : 
    1212           3 :         if (config->preassoc_mac_addr)
    1213           0 :                 fprintf(f, "preassoc_mac_addr=%d\n", config->preassoc_mac_addr);
    1214             : 
    1215           3 :         if (config->key_mgmt_offload != DEFAULT_KEY_MGMT_OFFLOAD)
    1216           0 :                 fprintf(f, "key_mgmt_offload=%u\n", config->key_mgmt_offload);
    1217             : 
    1218           3 :         if (config->user_mpm != DEFAULT_USER_MPM)
    1219           0 :                 fprintf(f, "user_mpm=%d\n", config->user_mpm);
    1220             : 
    1221           3 :         if (config->max_peer_links != DEFAULT_MAX_PEER_LINKS)
    1222           0 :                 fprintf(f, "max_peer_links=%d\n", config->max_peer_links);
    1223             : 
    1224           3 :         if (config->cert_in_cb != DEFAULT_CERT_IN_CB)
    1225           0 :                 fprintf(f, "cert_in_cb=%d\n", config->cert_in_cb);
    1226             : 
    1227           3 :         if (config->mesh_max_inactivity != DEFAULT_MESH_MAX_INACTIVITY)
    1228           0 :                 fprintf(f, "mesh_max_inactivity=%d\n",
    1229             :                         config->mesh_max_inactivity);
    1230             : 
    1231           3 :         if (config->passive_scan)
    1232           0 :                 fprintf(f, "cert_in_cb=%d\n", config->passive_scan);
    1233           3 : }
    1234             : 
    1235             : #endif /* CONFIG_NO_CONFIG_WRITE */
    1236             : 
    1237             : 
    1238           5 : int wpa_config_write(const char *name, struct wpa_config *config)
    1239             : {
    1240             : #ifndef CONFIG_NO_CONFIG_WRITE
    1241             :         FILE *f;
    1242             :         struct wpa_ssid *ssid;
    1243             :         struct wpa_cred *cred;
    1244             : #ifndef CONFIG_NO_CONFIG_BLOBS
    1245             :         struct wpa_config_blob *blob;
    1246             : #endif /* CONFIG_NO_CONFIG_BLOBS */
    1247           5 :         int ret = 0;
    1248             : 
    1249           5 :         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
    1250             : 
    1251           5 :         f = fopen(name, "w");
    1252           5 :         if (f == NULL) {
    1253           2 :                 wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name);
    1254           2 :                 return -1;
    1255             :         }
    1256             : 
    1257           3 :         wpa_config_write_global(f, config);
    1258             : 
    1259           6 :         for (cred = config->cred; cred; cred = cred->next) {
    1260           3 :                 if (cred->temporary)
    1261           0 :                         continue;
    1262           3 :                 fprintf(f, "\ncred={\n");
    1263           3 :                 wpa_config_write_cred(f, cred);
    1264           3 :                 fprintf(f, "}\n");
    1265             :         }
    1266             : 
    1267           6 :         for (ssid = config->ssid; ssid; ssid = ssid->next) {
    1268           3 :                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary)
    1269           0 :                         continue; /* do not save temporary networks */
    1270           3 :                 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
    1271           0 :                     !ssid->passphrase)
    1272           0 :                         continue; /* do not save invalid network */
    1273           3 :                 fprintf(f, "\nnetwork={\n");
    1274           3 :                 wpa_config_write_network(f, ssid);
    1275           3 :                 fprintf(f, "}\n");
    1276             :         }
    1277             : 
    1278             : #ifndef CONFIG_NO_CONFIG_BLOBS
    1279           6 :         for (blob = config->blobs; blob; blob = blob->next) {
    1280           3 :                 ret = wpa_config_write_blob(f, blob);
    1281           3 :                 if (ret)
    1282           0 :                         break;
    1283             :         }
    1284             : #endif /* CONFIG_NO_CONFIG_BLOBS */
    1285             : 
    1286           3 :         fclose(f);
    1287             : 
    1288           3 :         wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
    1289             :                    name, ret ? "un" : "");
    1290           3 :         return ret;
    1291             : #else /* CONFIG_NO_CONFIG_WRITE */
    1292             :         return -1;
    1293             : #endif /* CONFIG_NO_CONFIG_WRITE */
    1294             : }

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