2017-05-09 22:37:26 -07:00
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/************************************************************************
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* auth.c
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* voxelands - 3d voxel world sandbox game
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* Copyright (C) Lisa 'darkrose' Milne 2016 <lisa@ltmnet.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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************************************************************************/
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2017-05-21 03:16:45 -07:00
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#include "common.h"
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2017-05-09 22:37:26 -07:00
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#include "auth.h"
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#include "thread.h"
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#include "nvp.h"
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#include "file.h"
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#include "path.h"
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#include <stdlib.h>
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#include <string.h>
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static struct {
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char* file;
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mutex_t *mutex;
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nvp_t *data;
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char modified;
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char* privstr[PRIV_COUNT];
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} auth = {
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NULL,
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NULL,
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NULL,
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0,
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{
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"build",
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"teleport",
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"settime",
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"privs",
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"server",
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"shout",
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"ban"
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}
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};
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/* convert privs into a human readable csv string */
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int auth_privs2str(uint64_t privs, char* buff, int size)
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{
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int i;
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int r = 0;
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int l;
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int o = 0;
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uint64_t p = 1;
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if (!buff || !size)
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return -1;
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buff[0] = 0;
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for (i=0; i<PRIV_COUNT; i++) {
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p = (1<<i);
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if ((privs&p) != p)
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continue;
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l = strlen(auth.privstr[i]);
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2017-05-21 03:16:45 -07:00
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if ((o+l+2) >= size)
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2017-05-09 22:37:26 -07:00
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continue;
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if (r) {
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2017-05-21 03:16:45 -07:00
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strcpy(buff+o,",");
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2017-05-09 22:37:26 -07:00
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o++;
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}
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2017-05-21 03:16:45 -07:00
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strcpy(buff+o,auth.privstr[i]);
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2017-05-09 22:37:26 -07:00
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o += l;
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r++;
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}
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return r;
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}
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/* convert a string to privs */
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uint64_t auth_str2privs(char* str)
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{
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uint64_t privs = 0;
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char buff[256];
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int i;
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2017-05-21 03:16:45 -07:00
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int j;
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int o = 0;
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char* n;
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2017-05-09 22:37:26 -07:00
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if (!str)
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return 0;
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2017-05-21 03:16:45 -07:00
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for (i=0; ; i++) {
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if (!str[i] || str[i] == ',') {
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buff[o] = 0;
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o = 0;
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n = trim(buff);
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for (j=0; j<PRIV_COUNT; j++) {
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if (strcmp(auth.privstr[j],n))
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continue;
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privs |= (1<<j);
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break;
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}
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if (j == PRIV_COUNT)
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return PRIV_INVALID;
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if (!str[i])
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break;
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}else if (o<255) {
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buff[o++] = str[i];
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2017-05-09 22:37:26 -07:00
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}
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}
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return privs;
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}
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/* init auth system for the given file */
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int auth_init(char* file)
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{
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char* path;
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if (!auth.mutex) {
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auth.mutex = mutex_create();
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if (!auth.mutex)
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return -1;
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}
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2017-05-10 05:39:38 -07:00
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path = path_get("world",file,0,NULL,0);
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2017-05-09 22:37:26 -07:00
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if (!path)
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return -1;
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if (auth.file) {
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if (!strcmp(auth.file,path)) {
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free(path);
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auth_load();
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return 0;
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}
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if (auth.file)
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free(auth.file);
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auth.file = NULL;
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nvp_free(&auth.data,1);
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auth.data = NULL;
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}
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auth.file = path;
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auth.modified = 0;
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auth_load();
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return 0;
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}
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/* free auth memory, reset auth struct */
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void auth_exit()
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{
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2017-05-10 05:39:38 -07:00
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if (!auth.mutex)
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return;
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2017-05-09 22:37:26 -07:00
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if (auth.modified)
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auth_save();
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2017-05-10 05:39:38 -07:00
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if (auth.mutex)
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mutex_free(auth.mutex);
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2017-05-09 22:37:26 -07:00
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auth.mutex = NULL;
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if (auth.file)
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free(auth.file);
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auth.file = NULL;
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2017-05-10 05:39:38 -07:00
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if (auth.data)
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nvp_free(&auth.data,1);
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2017-05-09 22:37:26 -07:00
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auth.data = NULL;
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auth.modified = 0;
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}
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/* load auth data from file */
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void auth_load()
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{
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file_t *f;
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char line[512];
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char* n;
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char* p;
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char* s;
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uint64_t privs;
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authdata_t *d;
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mutex_lock(auth.mutex);
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f = file_load(NULL,auth.file);
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if (!f) {
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mutex_unlock(auth.mutex);
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return;
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}
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2017-05-10 05:39:38 -07:00
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while (file_readline(f,line,512) > 0) {
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2017-05-09 22:37:26 -07:00
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n = line;
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p = strchr(n,':');
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if (!p)
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continue;
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*p = 0;
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p++;
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s = strchr(p,':');
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if (!s)
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continue;
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*s = 0;
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s++;
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privs = auth_str2privs(s);
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d = malloc(sizeof(authdata_t));
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if (!d)
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continue;
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strcpy(d->pwd,p);
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d->privs = privs;
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nvp_set(&auth.data,n,"",d);
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}
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mutex_unlock(auth.mutex);
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file_free(f);
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auth.modified = 0;
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}
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/* save auth data to file */
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void auth_save()
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{
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file_t *f;
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nvp_t *n;
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char s[512];
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if (!auth.modified)
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return;
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mutex_lock(auth.mutex);
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f = file_create(NULL,auth.file);
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if (!f) {
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mutex_unlock(auth.mutex);
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return;
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}
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for (n=auth.data; n; n = n->next) {
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if (!n->name || !n->name[0])
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continue;
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if (auth_privs2str(((authdata_t*)n->data)->privs,s,512) < 0)
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s[0] = 0;
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file_writef(f,"%s:%s:%s\n",n->name,((authdata_t*)n->data)->pwd,s);
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}
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file_flush(f);
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mutex_unlock(auth.mutex);
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file_free(f);
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auth.modified = 0;
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}
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int auth_exists(char* name)
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{
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nvp_t *n;
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if (!name)
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return 0;
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mutex_lock(auth.mutex);
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n = nvp_get(&auth.data,name);
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mutex_unlock(auth.mutex);
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if (!n)
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return 0;
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return 1;
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}
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void auth_set(char* name, authdata_t data)
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{
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nvp_t *n;
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if (!name)
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return;
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mutex_lock(auth.mutex);
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n = nvp_get(&auth.data,name);
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if (n) {
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strcpy(((authdata_t*)n->data)->pwd,data.pwd);
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((authdata_t*)n->data)->privs = data.privs;
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}else{
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authdata_t *d = malloc(sizeof(authdata_t));
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if (!d) {
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mutex_unlock(auth.mutex);
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return;
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}
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strcpy(d->pwd,data.pwd);
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d->privs = data.privs;
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nvp_set(&auth.data,name,"",d);
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}
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mutex_unlock(auth.mutex);
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auth.modified = 1;
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}
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void auth_add(char* name)
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{
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authdata_t d;
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d.pwd[0] = 0;
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d.privs = PRIV_DEFAULT;
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auth_set(name,d);
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}
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int auth_getpwd(char* name, char buff[64])
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{
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nvp_t *n;
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buff[0] = 0;
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if (!name)
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return -1;
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mutex_lock(auth.mutex);
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n = nvp_get(&auth.data,name);
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if (!n) {
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mutex_unlock(auth.mutex);
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return -1;
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}
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strcpy(buff,((authdata_t*)n->data)->pwd);
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mutex_unlock(auth.mutex);
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return 0;
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}
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void auth_setpwd(char* name, char* pwd)
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{
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nvp_t *n;
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if (!name)
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return;
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mutex_lock(auth.mutex);
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n = nvp_get(&auth.data,name);
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if (n) {
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strcpy(((authdata_t*)n->data)->pwd,pwd);
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}else{
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authdata_t *d = malloc(sizeof(authdata_t));
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if (!d) {
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mutex_unlock(auth.mutex);
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return;
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}
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strcpy(d->pwd,pwd);
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d->privs = PRIV_DEFAULT;
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nvp_set(&auth.data,name,"",d);
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}
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mutex_unlock(auth.mutex);
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auth.modified = 1;
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}
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uint64_t auth_getprivs(char* name)
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{
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nvp_t *n;
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uint64_t privs = PRIV_INVALID;
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if (!name)
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return PRIV_INVALID;
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mutex_lock(auth.mutex);
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n = nvp_get(&auth.data,name);
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if (!n) {
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mutex_unlock(auth.mutex);
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return PRIV_INVALID;
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}
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privs = ((authdata_t*)n->data)->privs;
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mutex_unlock(auth.mutex);
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return privs;
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}
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void auth_setprivs(char* name, uint64_t privs)
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{
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nvp_t *n;
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if (!name)
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return;
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mutex_lock(auth.mutex);
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n = nvp_get(&auth.data,name);
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if (n) {
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((authdata_t*)n->data)->privs = privs;
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}else{
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authdata_t *d = malloc(sizeof(authdata_t));
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if (!d) {
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mutex_unlock(auth.mutex);
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|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
d->pwd[0] = 0;
|
|
|
|
d->privs = privs;
|
|
|
|
nvp_set(&auth.data,name,"",d);
|
|
|
|
}
|
|
|
|
|
|
|
|
mutex_unlock(auth.mutex);
|
|
|
|
|
|
|
|
auth.modified = 1;
|
|
|
|
}
|