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userv/common.c

190 lines
4.5 KiB

7 years ago
/*
* UserServer/0.1
* common.c - Common functions
*
* Copyright (C) 2002 Gergely Polonkai
* Copyright (C) 2002-2006 P-Team Programmers' Group
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have recieved a copy of the GNU General Public License
* along with this program; if not, write to Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA, 02111-1307, USA.
*
* GNU GPL is in doc/COPYING
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <pwd.h>
#include <crypt.h>
#include "userv.h"
#include "functions.h"
char table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
int
ParseConfig(void) {
FILE *cf;
char buf[1024];
char *line;
int nl = 0;
if ((cf = fopen("/etc/userv.conf", "r")) == NULL)
return ERR_NOCF;
memset(&buf, 0, 1024);
while (fgets((char *)&buf, 1023, cf)) {
char *param;
int i;
nl++;
if ((line = trim(buf, NULL))) {
if (strncmp(line, "listen ", 7) == 0) {
param = strchr(line, ' ') + 1;
for (i = 0; i < strlen(param); i++)
if (isspace(*(param + i))) {
*(param + i) = 0;
break;
}
if (!valid_ip(param))
return nl;
if (AddListen(param) != ERR_OK)
return ERR_NOMEM;
}
if (strncmp(line, "confserv ", 9) == 0) {
param = strchr(line, ' ') + 1;
for (i = 0; i < strlen(param); i++)
if (isspace(*(param + 1))) {
*(param + i) = 0;
break;
}
if (!valid_ip(param))
return nl;
if (AddConfig(param) != ERR_OK)
return ERR_NOMEM;
}
if (strncmp(line, "server ", 7) == 0) {
param = strchr(line, ' ') + 1;
for (i = 0; i < strlen(param); i++)
if (isspace(*(param + 1))) {
*(param + i) = 0;
break;
}
if (!valid_ip(param))
return nl;
if (AddPeer(param) != ERR_OK)
return ERR_NOMEM;
}
if (strncmp(line, "client ", 7) == 0) {
param = strchr(line, ' ') + 1;
for (i = 0; i < strlen(param); i++)
if (isspace(*(param + i))) {
*(param + i) = 0;
break;
}
if (!valid_ip(param))
return nl;
if (AddClient(param) != ERR_OK)
return ERR_NOMEM;
}
if (strncmp(line, "user ", 5) == 0) {
param = strchr(line, ' ') + 1;
for (i = 0; i < strlen(param); i++)
if (isspace(*(param + i))) {
*(param + i) = 0;
break;
}
if (!valid_user(param))
return nl;
if (AddUser(param) != ERR_OK)
return ERR_NOMEM;
}
free(line);
}
memset(buf, 0, 1024);
}
fclose(cf);
return ERR_OK;
}
int
Is_UID_exist(uid_t uid) {
if (getpwuid(uid) == NULL)
return 0;
return 1;
}
int
pwcheck(char *uname, char *passw) {
struct passwd *pwentry;
char buf[1024];
FILE *fd;
char *pwd;
if ((pwentry = getpwnam(uname)) == NULL)
return ERR_NOUSER;
if (strcmp(pwentry->pw_passwd, "x") == 0) {
if ((fd = fopen("/etc/shadow", "r")) == NULL)
return ERR_NOSHADOW;
memset(&buf, 0, 1024);
while (fgets((char *)&buf, 1023, fd)) {
if (strncmp((char *)&buf, uname, strlen(uname)) == 0)
break;
memset(&buf, 0, 1024);
}
fclose(fd);
} else
strcpy((char *)&buf, pwentry->pw_passwd);
pwd = strchr((char *)&buf, ':') + 1;
if (pwd - 1 == NULL)
return ERR_NOPASS;
*(strchr(pwd, ':')) = 0;
if (strcmp(crypt(passw, pwd), pwd) == 0)
return ERR_OK;
return ERR_BADPASS;
}
void
salt(char *where) {
int i;
if (!where)
return;
strncpy(where, "$1$", 3);
for (i = 3; i < 11; i++)
where[i] = table[(int)(1.0 * strlen(table) * rand() / (RAND_MAX + 1.0))];
where[11] = '$';
where[12] = 0;
}
void
tempname(char *where, size_t len) {
int i;
if (!where)
return;
for (i = 0; i < len; i++)
where[i] = table[(int)(1.0 * strlen(table) * rand() / (RAND_MAX + 1.0))];
where[len] = 0;
}