4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
18 * Copyright 2000,2006 The FreeRADIUS server project
21 #include <freeradius-devel/ident.h>
24 #include <freeradius-devel/radiusd.h>
25 #include <freeradius-devel/modules.h>
28 struct mypasswd *next;
40 struct mypasswd **table;
41 struct mypasswd *last_found;
50 #define rad_malloc(s) malloc(s)
52 void printpw(struct mypasswd *pw, int nfields){
55 for( i = 0; i < nfields; i++ ) printf("%s:", pw->field[i]);
58 else printf ("Not found\n");
64 static struct mypasswd * mypasswd_malloc(const char* buffer, int nfields, size_t* len)
67 /* reserve memory for (struct mypasswd) + listflag (nfields * sizeof (char*)) +
68 ** fields (nfields * sizeof (char)) + strlen (inst->format) + 1 */
70 *len=sizeof (struct mypasswd) + nfields * sizeof (char*) + nfields * sizeof (char ) + strlen(buffer) + 1;
71 t = (struct mypasswd *) rad_malloc(*len);
72 if (t) memset(t, 0, *len);
76 static int string_to_entry(const char* string, int nfields, char delimiter,
77 struct mypasswd *passwd, size_t bufferlen)
87 if (string[len-1] == '\n') len--;
89 if (string[len-1] == '\r') len--;
91 if (!len || !passwd ||
92 bufferlen < (len + nfields * sizeof (char*) + nfields * sizeof (char) + sizeof (struct mypasswd) + 1) ) return 0;
94 data_beg=(char *)passwd + sizeof(struct mypasswd);
95 str = data_beg + nfields * sizeof (char) + nfields * sizeof (char*);
96 memcpy (str, string, len);
98 passwd->field[fn++] = str;
99 passwd->listflag = data_beg + nfields * sizeof (char *);
100 for(i=0; i < len; i++){
101 if (str[i] == delimiter) {
103 passwd->field[fn++] = str + i + 1;
104 if (fn == nfields) break;
107 for (; fn < nfields; fn++) passwd->field[fn] = NULL;
108 return len + nfields * sizeof (char) + nfields * sizeof (char*) + sizeof (struct mypasswd) + 1;
112 static void destroy_password (struct mypasswd * pass)
115 while ((p=pass)!=NULL) {
122 static unsigned int hash(const char * username, unsigned int tablesize)
126 h = h * 7907 + *username++;
131 static void release_hash_table(struct hashtable * ht){
134 if (ht == NULL) return;
135 for (i = 0; i < ht->tablesize; i++)
137 destroy_password(ht->table[i]);
149 static void release_ht(struct hashtable * ht){
151 release_hash_table(ht);
152 if (ht->filename) free(ht->filename);
156 static struct hashtable * build_hash_table (const char * file, int nfields,
157 int keyfield, int islist, int tablesize, int ignorenis, char delimiter)
159 #define passwd ((struct mypasswd *) ht->buffer)
161 struct hashtable* ht;
164 struct mypasswd *hashentry, *hashentry1;
169 ht = (struct hashtable *) rad_malloc(sizeof(struct hashtable));
173 memset(ht, 0, sizeof(struct hashtable));
174 ht->filename = strdup(file);
179 ht->tablesize = tablesize;
180 ht->nfields = nfields;
181 ht->keyfield = keyfield;
183 ht->ignorenis = ignorenis;
184 if (delimiter) ht->delimiter = delimiter;
185 else ht->delimiter = ':';
186 if(!tablesize) return ht;
187 if(!(ht->fp = fopen(file,"r"))) {
192 memset(ht->buffer, 0, 1024);
193 ht->table = (struct mypasswd **) rad_malloc (tablesize * sizeof(struct mypasswd *));
196 * Unable allocate memory for hash table
197 * Still work without it
202 memset(ht->table, 0, tablesize * sizeof(struct mypasswd *));
203 while (fgets(buffer, 1024, ht->fp)) {
204 if(*buffer && *buffer!='\n' && (!ignorenis || (*buffer != '+' && *buffer != '-')) ){
205 if(!(hashentry = mypasswd_malloc(buffer, nfields, &len))){
206 release_hash_table(ht);
209 len = string_to_entry(buffer, nfields, ht->delimiter, hashentry, len);
210 if(!hashentry->field[keyfield] || *hashentry->field[keyfield] == '\0') {
216 list = hashentry->field[keyfield];
217 for (nextlist = list; *nextlist && *nextlist!=','; nextlist++);
218 if (*nextlist) *nextlist++ = 0;
221 h = hash(hashentry->field[keyfield], tablesize);
222 hashentry->next = ht->table[h];
223 ht->table[h] = hashentry;
225 for(list=nextlist; nextlist; list = nextlist){
226 for (nextlist = list; *nextlist && *nextlist!=','; nextlist++);
227 if (*nextlist) *nextlist++ = 0;
229 if(!(hashentry1 = mypasswd_malloc("", nfields, &len))){
230 release_hash_table(ht);
233 for (i=0; i<nfields; i++) hashentry1->field[i] = hashentry->field[i];
234 hashentry1->field[keyfield] = list;
235 h = hash(list, tablesize);
236 hashentry1->next = ht->table[h];
237 ht->table[h] = hashentry1;
248 static struct mypasswd * get_next(char *name, struct hashtable *ht)
250 #define passwd ((struct mypasswd *) ht->buffer)
251 struct mypasswd * hashentry;
254 char *list, *nextlist;
256 if (ht->tablesize > 0) {
257 /* get saved address of next item to check from buffer */
258 hashentry = ht->last_found;
259 for (; hashentry; hashentry = hashentry->next) {
260 if (!strcmp(hashentry->field[ht->keyfield], name)) {
261 /* save new address */
262 ht->last_found = hashentry->next;
268 /* printf("try to find in file\n"); */
269 if (!ht->fp) return NULL;
270 while (fgets(buffer, 1024,ht->fp)) {
271 if(*buffer && *buffer!='\n' && (len = string_to_entry(buffer, ht->nfields, ht->delimiter, passwd, sizeof(ht->buffer)-1)) &&
272 (!ht->ignorenis || (*buffer !='-' && *buffer != '+') ) ){
274 if(!strcmp(passwd->field[ht->keyfield], name))
278 for (list = passwd->field[ht->keyfield], nextlist = list; nextlist; list = nextlist) {
279 for(nextlist = list; *nextlist && *nextlist!=','; nextlist++);
280 if(!*nextlist)nextlist = 0;
281 else *nextlist++ = 0;
282 if(!strcmp(list, name)) return passwd;
294 static struct mypasswd * get_pw_nam(char * name, struct hashtable* ht)
297 struct mypasswd * hashentry;
299 if (!ht || !name || *name == '\0') return NULL;
300 ht->last_found = NULL;
301 if (ht->tablesize > 0) {
302 h = hash (name, ht->tablesize);
303 for (hashentry = ht->table[h]; hashentry; hashentry = hashentry->next)
304 if (!strcmp(hashentry->field[ht->keyfield], name)){
305 /* save address of next item to check into buffer */
306 ht->last_found=hashentry->next;
315 if (!(ht->fp=fopen(ht->filename, "r"))) return NULL;
316 return get_next(name, ht);
321 #define MALLOC_CHECK_ 1
324 struct hashtable *ht;
329 ht = build_hash_table("/etc/group", 4, 3, 1, 100, 0, ":");
331 printf("Hash table not built\n");
334 for (i=0; i<ht->tablesize; i++) if (ht->table[i]) {
336 for(pw=ht->table[i]; pw; pw=pw->next) printpw(pw, 4);
339 while(fgets(buffer, 1024, stdin)){
340 buffer[strlen(buffer)-1] = 0;
341 pw = get_pw_nam(buffer, ht);
343 while (pw = get_next(buffer, ht)) printpw(pw,4);
349 struct passwd_instance {
350 struct hashtable *ht;
351 struct mypasswd *pwdfmt;
365 static const CONF_PARSER module_config[] = {
366 { "filename", PW_TYPE_FILENAME,
367 offsetof(struct passwd_instance, filename), NULL, NULL },
368 { "format", PW_TYPE_STRING_PTR,
369 offsetof(struct passwd_instance, format), NULL, NULL },
370 { "delimiter", PW_TYPE_STRING_PTR,
371 offsetof(struct passwd_instance, delimiter), NULL, ":" },
372 { "ignorenislike", PW_TYPE_BOOLEAN,
373 offsetof(struct passwd_instance, ignorenislike), NULL, "yes" },
374 { "ignoreempty", PW_TYPE_BOOLEAN,
375 offsetof(struct passwd_instance, ignoreempty), NULL, "yes" },
376 { "allowmultiplekeys", PW_TYPE_BOOLEAN,
377 offsetof(struct passwd_instance, allowmultiple), NULL, "no" },
378 { "hashsize", PW_TYPE_INTEGER,
379 offsetof(struct passwd_instance, hashsize), NULL, "100" },
380 { NULL, -1, 0, NULL, NULL }
383 static int passwd_instantiate(CONF_SECTION *conf, void **instance)
385 #define inst ((struct passwd_instance *)*instance)
386 int nfields=0, keyfield=-1, listable=0;
388 char *lf=NULL; /* destination list flags temporary */
393 *instance = rad_malloc(sizeof(struct passwd_instance));
395 radlog(L_ERR, "rlm_passwd: cann't alloc instance");
398 memset(*instance, 0, sizeof(struct passwd_instance));
399 if (cf_section_parse(conf, inst, module_config) < 0) {
401 radlog(L_ERR, "rlm_passwd: cann't parse configuration");
404 if(!inst->filename || *inst->filename == '\0' || !inst->format || *inst->format == '\0') {
405 radlog(L_ERR, "rlm_passwd: cann't find passwd file and/or format in configuration");
408 lf=strdup(inst->format);
410 radlog(L_ERR, "rlm_passwd: memory allocation failed for lf");
413 memset(lf, 0, strlen(inst->format));
414 s = inst->format - 1;
416 if(s == inst->format - 1 || *s == ':'){
438 radlog(L_ERR, "rlm_passwd: no field market as key in format: %s", inst->format);
442 if (! (inst->ht = build_hash_table (inst->filename, nfields, keyfield, listable, inst->hashsize, inst->ignorenislike, *inst->delimiter)) ){
443 radlog(L_ERR, "rlm_passwd: can't build hashtable from passwd file");
447 if (! (inst->pwdfmt = mypasswd_malloc(inst->format, nfields, &len)) ){
448 radlog(L_ERR, "rlm_passwd: memory allocation failed");
449 release_ht(inst->ht);
453 if (!string_to_entry(inst->format, nfields, ':', inst->pwdfmt , len)) {
454 radlog(L_ERR, "rlm_passwd: unable to convert format entry");
455 release_ht(inst->ht);
460 memcpy(inst->pwdfmt->listflag, lf, nfields);
463 for (i=0; i<nfields; i++) {
464 if (*inst->pwdfmt->field[i] == '*') inst->pwdfmt->field[i]++;
465 if (*inst->pwdfmt->field[i] == ',') inst->pwdfmt->field[i]++;
466 if (*inst->pwdfmt->field[i] == '=') inst->pwdfmt->field[i]++;
467 if (*inst->pwdfmt->field[i] == '~') inst->pwdfmt->field[i]++;
469 if (!*inst->pwdfmt->field[keyfield]) {
470 radlog(L_ERR, "rlm_passwd: key field is empty");
471 release_ht(inst->ht);
474 if (! (da = dict_attrbyname (inst->pwdfmt->field[keyfield])) ) {
475 radlog(L_ERR, "rlm_passwd: unable to resolve attribute: %s", inst->pwdfmt->field[keyfield]);
476 release_ht(inst->ht);
480 inst->nfields = nfields;
481 inst->keyfield = keyfield;
482 inst->listable = listable;
483 DEBUG("rlm_passwd: nfields: %d keyfield %d(%s) listable: %s", nfields, keyfield, inst->pwdfmt->field[keyfield], listable?"yes":"no");
489 static int passwd_detach (void *instance) {
490 #define inst ((struct passwd_instance *)instance)
491 if(inst->ht) release_ht(inst->ht);
497 static void addresult (struct passwd_instance * inst, REQUEST *request, VALUE_PAIR ** vp, struct mypasswd * pw, char when, const char *listname)
502 for (i=0; i<inst->nfields; i++) {
503 if (inst->pwdfmt->field[i] && *inst->pwdfmt->field[i] && pw->field[i] && i != inst->keyfield && inst->pwdfmt->listflag[i] == when) {
504 if ( !inst->ignoreempty || pw->field[i][0] != 0 ) { /* if value in key/value pair is not empty */
505 if (! (newpair = pairmake (inst->pwdfmt->field[i], pw->field[i], T_OP_EQ))) {
506 radlog(L_AUTH, "rlm_passwd: Unable to create %s: %s", inst->pwdfmt->field[i], pw->field[i]);
509 RDEBUG("Added %s: '%s' to %s ", inst->pwdfmt->field[i], pw->field[i], listname);
510 pairadd (vp, newpair);
512 RDEBUG("NOOP %s: '%s' to %s ", inst->pwdfmt->field[i], pw->field[i], listname);
517 static int passwd_map(void *instance, REQUEST *request)
519 #define inst ((struct passwd_instance *)instance)
522 struct mypasswd * pw;
525 for (key = request->packet->vps;
526 key && (key = pairfind (key, inst->keyattr->attr, inst->keyattr->vendor));
529 * Ensure we have the string form of the attribute
531 vp_prints_value(buffer, sizeof(buffer), key, 0);
532 if (! (pw = get_pw_nam(buffer, inst->ht)) ) {
536 addresult(inst, request, &request->config_items, pw, 0, "config_items");
537 addresult(inst, request, &request->reply->vps, pw, 1, "reply_items");
538 addresult(inst, request, &request->packet->vps, pw, 2, "request_items");
539 } while ( (pw = get_next(buffer, inst->ht)) );
541 if (!inst->allowmultiple) break;
544 return RLM_MODULE_NOTFOUND;
546 return RLM_MODULE_OK;
551 module_t rlm_passwd = {
554 RLM_TYPE_CHECK_CONFIG_SAFE | RLM_TYPE_HUP_SAFE, /* type */
555 passwd_instantiate, /* instantiation */
556 passwd_detach, /* detach */
558 NULL, /* authentication */
559 passwd_map, /* authorization */
560 NULL, /* pre-accounting */
561 passwd_map, /* accounting */
562 NULL, /* checksimul */
563 NULL, /* pre-proxy */
564 NULL, /* post-proxy */
565 passwd_map /* post-auth */