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/* config.c */
/*
Copyright 2005 Aris Adamantiadis
This file is part of the SSH Library
The SSH Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
The SSH Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the SSH Library; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include "libconfig.h"
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include "server.h"
/* shortvar is "port" in "port 22" */
int port=22;
char *dsa=NULL;
char *rsa=NULL;
list *groups;
list *users;
/* users is a list of users. The key of this list is the user name.
the data of the list is a list of groups. both data & key from this list
is the group name */
struct group *current_group=NULL;
char *current_group_name;
int add_user(char *user){
list *groups_from_user;
// list *the_user;
printf("add_user(%s)\n",user);
if(!list_find(current_group->users,user)){
current_group->users=list_add(current_group->users,user,strdup(user));
}
groups_from_user=list_find(users,user);
if(!groups_from_user){
// the user isn't registered yet
groups_from_user=list_add(NULL,current_group_name,current_group_name);
users=list_add(users,user,groups_from_user);
} else {
// add the group name to the list of groups the user is bound to.
if(!list_find(groups_from_user,current_group_name)) // don't add it if it is already set
list_set(users,user,list_add(groups_from_user,current_group_name,current_group_name));
}
return 0;
}
int add_group(char *group){
struct group *grp=list_find(groups,group);
list *usr;
if(!grp){
printf("no such group %s\n",group);
return -1;
}
usr=grp->users;
while(usr){
add_user(usr->key);
usr=usr->next;
}
return 0;
}
int group_callback(const char *shortvar, const char *var, const char *arguments, const char *value, lc_flags_t flags, void *extra){
switch(flags){
case LC_FLAGS_SECTIONSTART:
printf("new group %s\n",arguments);
if(current_group){
printf("can't include a section into a section\n");
return LC_CBRET_ERROR;
}
if(list_find(groups,arguments)){
printf("group %s defined twice\n",arguments);
return LC_CBRET_ERROR;
}
current_group=malloc(sizeof(struct group));
memset(current_group,0,sizeof(struct group));
groups=list_add(groups,arguments,current_group);
current_group_name=strdup(arguments);
break;
case LC_FLAGS_SECTIONEND:
printf("end of group\n\n");
current_group=NULL;
break;
default:
printf("%s - %s\n", shortvar, value);
if(!strcasecmp(shortvar,"user")){
char *ptr;
char *user=(char *)value;
do{
ptr=strchr(user,',');
if(ptr){
*ptr=0;
++ptr;
}
while(*user==' ')
++user;
add_user(user);
user=ptr;
} while (user);
}
if(!strcasecmp(shortvar,"group")){
char *ptr;
char *group=(char *)value;
do{
ptr=strchr(group,',');
if(ptr){
*ptr=0;
++ptr;
}
while(*group==' ')
++group;
add_group(group);
group=ptr;
} while (group);
}
if(!strcasecmp(shortvar,"uid")){
current_group->uid=strdup(value);
}
if(!strcasecmp(shortvar,"gid")){
current_group->gid=strdup(value);
}
if(!strcasecmp(shortvar,"chroot")){
current_group->chroot=strdup(value);
}
}
return LC_CBRET_OKAY;
}
int dir_callback(const char *shortvar, const char *var, const char *arguments, const char *value, lc_flags_t flags, void *extra){
switch(flags){
case LC_FLAGS_SECTIONSTART:
printf("new dir %s\n",arguments);
break;
case LC_FLAGS_SECTIONEND:
printf("end of dir\n\n");
break;
default:
printf("%s - %s\n",shortvar, value);
}
return LC_CBRET_OKAY;
}
void list_config(){
list *ptr=groups;
list *user;
printf("listing groups\n");
while(ptr){
printf("group %s\n",ptr->key);
user=((struct group *)ptr->data)->users;
while(user){
printf(" user %s\n",user->key);
user=user->next;
}
ptr=ptr->next;
}
printf("listing users\n");
user=users;
while(user){
printf("user %s\n",user->key);
ptr=user->data;
while(ptr){
printf(" group %s\n",ptr->key);
ptr=ptr->next;
}
user=user->next;
}
}
int parse_config(char *file){
int r;
printf("Parsing configuration file %s\n",file);
lc_register_var("Port",LC_VAR_INT,&port,' ');
lc_register_var("Hostkeyrsa",LC_VAR_STRING,&rsa,' ');
lc_register_var("Hostkeydsa",LC_VAR_STRING,&dsa,' ');
// lc_register_var("group", LC_VAR_SECTION, NULL, 0);
r=lc_register_callback("group",0,LC_VAR_NONE,group_callback,NULL);
r=lc_register_callback("group.user",0,LC_VAR_UNKNOWN,group_callback,NULL);
r=lc_register_callback("group.uid",0,LC_VAR_UNKNOWN,group_callback,NULL);
r=lc_register_callback("group.chroot",0,LC_VAR_UNKNOWN,group_callback,NULL);
r=lc_register_callback("group.group",0,LC_VAR_UNKNOWN,group_callback,NULL);
// lc_register_var("dir", LC_VAR_SECTION, NULL, 0);
r=lc_register_callback("dir",0,LC_VAR_NONE,dir_callback,NULL);
r=lc_register_callback("dir.list",0,LC_VAR_UNKNOWN,dir_callback,NULL);
r=lc_register_callback("dir.read",0,LC_VAR_UNKNOWN,dir_callback,NULL);
r=lc_register_callback("dir.write",0,LC_VAR_UNKNOWN,dir_callback,NULL);
r=lc_process_file("sftp",file,LC_CONF_APACHE);
if(r<0)
printf("lc_process_file=%d,%s\n",r,lc_geterrstr());
lc_cleanup();
list_config();
return 0;
}
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