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server goes into backgroup

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server accepts command line arguments
server write
comments into the configuration file.


git-svn-id: svn+ssh://svn.berlios.de/svnroot/repos/libssh/trunk@31 7dcaeef0-15fb-0310-b436-a5af3365683c
This commit is contained in:
Aris Adamantiadis
2005-08-31 00:00:36 +00:00
parent a8b5d63e14
commit 8963144850
3 changed files with 75 additions and 19 deletions
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19
sftp_server/userauth.c
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@@ -25,6 +25,7 @@ MA 02111-1307, USA. */
//#include <libssh/sftp.h>
#include <security/pam_appl.h>
#include <pwd.h>
#include <errno.h>
#include <string.h>
#include "server.h"
@@ -71,8 +72,10 @@ int postauth_conf(char *user){
root=user_chroot(user);
if(root){
if((ptr=strstr(root,"$HOME"))){
if(!pw)
if(!pw){
ssh_say(1,"Postauth failed : no home directory for user %s\n",user);
return -1; // this user has no user directory
}
*ptr=0;
snprintf(buffer,sizeof(buffer),"%s%s/%s",
root,pw->pw_dir,ptr+strlen("$HOME"));
@@ -83,18 +86,23 @@ int postauth_conf(char *user){
/* we don't chroot right now because we still need getpwnam() */
char_uid=user_uid(user);
if(!char_uid){
if(!pw)
if(!pw){
ssh_say(1,"postauth failed : user %s doesn't exist(try to set the uid setting)\n",user);
return -1; // user doesn't exist !
}
char_uid=user;
}
uid=atoi(char_uid);
if(uid==0 && char_uid[0]!=0){
pw=getpwnam(char_uid);
if(!pw)
if(!pw){
ssh_say(1,"postauth failed : user %s does not exist\n",char_uid);
return -1;
}
uid=pw->pw_uid;
}
if(root && chroot(buffer)){
ssh_say(1,"Postauth failed : chroot failed (%s)\n",strerror(errno));
return -1; // cannot chroot
}
if(root){
@@ -106,13 +114,13 @@ int postauth_conf(char *user){
chdir("/");
}
if(setuid(uid)){
ssh_say(1,"Postauth failed : cannot set uid (%)\n",strerror(errno));
return -1; // cannot setuid
}
return 0;
}
struct pam_conv pam_conv ={ password_conv, NULL };
/* returns 1 if authenticated, 0 if failed,
-1 if you must leave */
@@ -136,6 +144,7 @@ int auth_password(char *user, char *password){
return -1;
return 1;
} else {
ssh_say(1,"password auth failed for user %s\n",user);
pam_end(pamh,PAM_AUTH_ERR);
return 0;
}