1 files changed, 0 insertions, 535 deletions

diff --git a/sftp_server/main.c b/sftp_server/main.c
index 949b9979..91a5d7a4 100644
--- a/sftp_server/main.c
+++ b/sftp_server/main.c
@@ -25,544 +25,9 @@ MA 02111-1307, USA. */
 #include <libssh/sftp.h>
 #include <unistd.h>
 #include <string.h>
-#include <limits.h>
-#include <dirent.h>
-#include <netdb.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
 #include <signal.h>
-#include <security/pam_appl.h>
-#include <pwd.h>
-
 #include "server.h"
 
-#define SERVICE "sftp"
-
-#define TYPE_DIR 1
-#define TYPE_FILE 1
-struct sftp_handle {
-    int type;
-    int offset;
-    char *name;
-    int eof;
-    DIR *dir;
-    FILE *file;
-};
-
-char *user_password;
-int password_conv(int num_msg, const struct pam_message **msg,
-                  struct pam_response **resp, void *appdata)
-{
-    int i=0;
-    for(i=0;i<num_msg;++i){
-        resp[i]=malloc(sizeof (struct pam_response));
-        resp[i]->resp_retcode=0;
-        switch(msg[i]->msg_style){
-            case PAM_PROMPT_ECHO_ON:
-                //printf("PAM: %s",msg[i]->msg);
-                resp[i]->resp=strdup(user_password);
-                break;
-            case PAM_PROMPT_ECHO_OFF:
-                //printf("PAM: %s",msg[i]->msg);
-                resp[i]->resp=strdup(user_password);
-                break;
-            case PAM_ERROR_MSG:
-                //printf("PAM_ERROR: %s",msg[i]->msg);
-                break;
-            case PAM_TEXT_INFO:
-                //printf("PAM TEXT: %s",msg[i]->msg);
-                break;
-            default:
-                break;
-        }
-    }
-    return PAM_SUCCESS;
-}
-
-/* postauth_conf returns -1 on error, else 0 */
-int postauth_conf(char *user){
-    /* first, find a chroot if any */
-    char *root,*ptr;
-    char *char_uid;
-    char buffer[256];
-    int uid;
-    struct passwd *pw=getpwnam(user);
-    root=user_chroot(user);
-    if(root){
-        if((ptr=strstr(root,"$HOME"))){
-            if(!pw)
-                return -1; // this user has no user directory
-            *ptr=0;
-            snprintf(buffer,sizeof(buffer),"%s%s/%s",
-                     root,pw->pw_dir,ptr+strlen("$HOME"));
-        }
-        else 
-            snprintf(buffer,sizeof(buffer),"%s",root);
-    }
-    /* we don't chroot right now because we still need getpwnam() */
-    char_uid=user_uid(user);
-    if(!char_uid){
-        if(!pw)
-            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)
-            return -1;
-        uid=pw->pw_uid;
-    }
-    if(root && chroot(buffer)){
-        return -1; // cannot chroot
-    }
-    if(root){
-        chdir("/");
-    } else {
-        if(pw)
-            chdir(pw->pw_dir);
-        else
-            chdir("/");
-    }
-    if(setuid(uid)){
-        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 */
-int auth_password(char *user, char *password){
-    pam_handle_t *pamh;
-    int ret;
-    static int tries=0;
-    if(tries>3)
-        return -1;
-    tries++;
-    user_password=password;
-    ret=pam_start(SERVICE,user,&pam_conv,&pamh);
-    if(ret==PAM_SUCCESS)
-        ret=pam_authenticate(pamh,0);
-    if(ret==PAM_SUCCESS)
-        ret=pam_acct_mgmt(pamh,0);
-    memset(password,0,strlen(password));
-    if(ret==PAM_SUCCESS){
-        pam_end(pamh,PAM_SUCCESS);
-        if(postauth_conf(user))
-            return -1;
-        return 1;
-    } else {
-        pam_end(pamh,PAM_AUTH_ERR);
-        return 0;
-    }
-}
-
-int reply_status(SFTP_CLIENT_MESSAGE *msg){
-    switch(errno){
-        case EACCES:
-            return sftp_reply_status(msg,SSH_FX_PERMISSION_DENIED,
-                                     "permission denied");
-        case ENOENT:
-            return sftp_reply_status(msg,SSH_FX_NO_SUCH_FILE,
-                                     "no such file or directory");
-        case ENOTDIR:
-            return sftp_reply_status(msg,SSH_FX_FAILURE,
-                                     "not a directory");
-        default:
-            return sftp_reply_status(msg,SSH_FX_FAILURE,NULL);
-    }
-}
-
-void handle_opendir(SFTP_CLIENT_MESSAGE *msg){
-    DIR *dir=opendir(msg->filename);
-    struct sftp_handle *hdl;
-    STRING *handle;
-    if(!dir){
-        reply_status(msg);
-        return;
-    }
-    hdl=malloc(sizeof(struct sftp_handle));
-    memset(hdl,0,sizeof(struct sftp_handle));
-    hdl->type=TYPE_DIR;
-    hdl->offset=0;
-    hdl->dir=dir;
-    hdl->name=strdup(msg->filename);
-    handle=sftp_handle_alloc(msg->sftp,hdl);
-    sftp_reply_handle(msg,handle);
-    free(handle);
-}
-
-SFTP_ATTRIBUTES *attr_from_stat(struct stat *statbuf){
-    SFTP_ATTRIBUTES *attr=malloc(sizeof(SFTP_ATTRIBUTES));
-    memset(attr,0,sizeof(*attr));
-    attr->size=statbuf->st_size;
-    attr->uid=statbuf->st_uid;
-    attr->gid=statbuf->st_gid;
-    attr->permissions=statbuf->st_mode;
-    attr->atime=statbuf->st_atime;
-    attr->mtime=statbuf->st_mtime;
-    attr->flags=SSH_FILEXFER_ATTR_SIZE | SSH_FILEXFER_ATTR_UIDGID
-            | SSH_FILEXFER_ATTR_PERMISSIONS | SSH_FILEXFER_ATTR_ACMODTIME;
-    return attr;
-}
-
-int handle_stat(SFTP_CLIENT_MESSAGE *msg,int follow){
-    struct stat statbuf;
-    SFTP_ATTRIBUTES *attr;
-    int ret;
-    if(follow)
-        ret=stat(msg->filename,&statbuf);
-    else 
-        ret=lstat(msg->filename,&statbuf);
-    if(ret<0){
-        reply_status(msg);
-        return 0;
-    }
-    attr=attr_from_stat(&statbuf);
-    sftp_reply_attr(msg, attr);
-    sftp_attributes_free(attr);
-    return 0;
-}
-
-char *long_name(char *file, struct stat *statbuf){
-    static char buf[256];
-    char buf2[100];
-    int mode=statbuf->st_mode;
-    char *time,*ptr;
-    strcpy(buf,"");
-    switch(mode & S_IFMT){
-        case S_IFDIR:
-            strcat(buf,"d");
-            break;
-        default:
-            strcat(buf,"-");
-            break;
-    }
-    /* user */
-    if(mode & 0400)
-        strcat(buf,"r");
-    else
-        strcat(buf,"-");
-    if(mode & 0200)
-        strcat(buf,"w");
-    else
-        strcat(buf,"-");
-    if(mode & 0100){
-        if(mode & S_ISUID)
-            strcat(buf,"s");
-        else
-            strcat(buf,"x");
-    } else
-        strcat(buf,"-");
-    /*group*/
-    if(mode & 040)
-        strcat(buf,"r");
-    else
-        strcat(buf,"-");
-    if(mode & 020)
-        strcat(buf,"w");
-    else
-        strcat(buf,"-");
-    if(mode & 010)
-        strcat(buf,"x");
-    else
-        strcat(buf,"-");
-    /* other */
-    if(mode & 04)
-        strcat(buf,"r");
-    else
-        strcat(buf,"-");
-    if(mode & 02)
-        strcat(buf,"w");
-    else
-        strcat(buf,"-");
-    if(mode & 01)
-        strcat(buf,"x");
-    else
-        strcat(buf,"-");
-    strcat(buf," ");
-    snprintf(buf2,sizeof(buf2),"%3d %d %d %d",(int)statbuf->st_nlink,
-             (int)statbuf->st_uid,(int)statbuf->st_gid,(int)statbuf->st_size);
-    strcat(buf,buf2);
-    time=ctime(&statbuf->st_mtime)+4;
-    if((ptr=strchr(time,'\n')))
-        *ptr=0;
-    snprintf(buf2,sizeof(buf2)," %s %s",time,file);
-    // +4 to remove the "WED "
-    strcat(buf,buf2);
-    return buf;
-}
-
-int handle_readdir(SFTP_CLIENT_MESSAGE *msg){
-    struct sftp_handle *handle=sftp_handle(msg->sftp,msg->handle);
-    SFTP_ATTRIBUTES *attr;
-    struct dirent *dir;
-    char *longname;
-    struct stat statbuf;
-    char file[1024];
-    int i;
-    if(!handle || handle->type!=TYPE_DIR){
-        sftp_reply_status(msg,SSH_FX_BAD_MESSAGE,"invalid handle");
-        return 0;
-    }
-    for(i=0; !handle->eof && i<50;++i){
-        dir=readdir(handle->dir);
-        if(!dir){
-            handle->eof=1;
-            break;
-        }
-        snprintf(file,sizeof(file),"%s/%s",handle->name,
-                 dir->d_name);
-        if(lstat(file,&statbuf)){
-            memset(&statbuf,0,sizeof(statbuf));
-        }
-        attr=attr_from_stat(&statbuf);
-        longname=long_name(dir->d_name,&statbuf);
-        sftp_reply_names_add(msg,dir->d_name,longname,attr);
-        sftp_attributes_free(attr);
-    }
-    /* if there was at least one file, don't send the eof yet */
-    if(i==0 && handle->eof){
-        sftp_reply_status(msg,SSH_FX_EOF,NULL);
-        return 0;
-    }
-    sftp_reply_names(msg);
-    return 0;
-}
-
-int handle_read(SFTP_CLIENT_MESSAGE *msg){
-    struct sftp_handle *handle=sftp_handle(msg->sftp,msg->handle);
-    u32 len=msg->len;
-    void *data;
-    int r;
-    if(!handle || handle->type!=TYPE_FILE){
-        sftp_reply_status(msg,SSH_FX_BAD_MESSAGE,"invalid handle");
-        return 0;
-    }
-    if(len>(2<<15)){
-        /* 32000 */
-        len=2<<15;
-    }
-    data=malloc(len);
-    fseeko(handle->file,msg->offset,SEEK_SET);
-    r=fread(data,1,len,handle->file);
-    ssh_say(2,"read %d bytes\n",r);
-    if(r<=0 && (len>0)){
-        if(feof(handle->file)){
-            sftp_reply_status(msg,SSH_FX_EOF,"End of file");
-        } else {
-            reply_status(msg);
-        }
-        return 0;
-    }
-    sftp_reply_data(msg,data,r);
-    free(data);
-    return 0;
-}
-
-int handle_close(SFTP_CLIENT_MESSAGE *msg){
-    struct sftp_handle *handle=sftp_handle(msg->sftp,msg->handle);
-    if(!handle){
-        sftp_reply_status(msg,SSH_FX_BAD_MESSAGE,"invalid handle");
-        return 0;
-    }
-    sftp_handle_remove(msg->sftp,handle);
-    if(handle->type==TYPE_DIR){
-        closedir(handle->dir);
-    } else {
-        fclose(handle->file);
-    }
-    if(handle->name)
-        free(handle->name);
-    free(handle);
-    sftp_reply_status(msg,SSH_FX_OK,NULL);
-    return 0;
-}
-
-int handle_open(SFTP_CLIENT_MESSAGE *msg){
-    int flags=0;
-    int fd;
-    FILE *file;
-    char *mode="r";
-    struct sftp_handle *hdl;
-    STRING *handle;
-    if(msg->flags & SSH_FXF_READ)
-        flags |= O_RDONLY;
-    if(msg->flags & SSH_FXF_WRITE)
-        flags |= O_WRONLY;
-    if(msg->flags & SSH_FXF_APPEND)
-        flags |= O_APPEND;
-    if(msg->flags & SSH_FXF_TRUNC)
-        flags |= O_TRUNC;
-    if(msg->flags & SSH_FXF_EXCL)
-        flags |= O_EXCL;
-    if(msg->flags & SSH_FXF_CREAT)
-        flags |= O_CREAT;
-    fd=open(msg->filename,flags,msg->attr->permissions);
-    if(fd<0){
-        reply_status(msg);
-        return 0;
-    }
-    switch(flags& (O_RDONLY | O_WRONLY | O_APPEND | O_TRUNC)){
-        case O_RDONLY:
-            mode="r";
-            break;
-        case (O_WRONLY|O_RDONLY):
-            mode="r+";
-            break;
-        case (O_WRONLY|O_TRUNC):
-            mode="w";
-            break;
-        case (O_WRONLY | O_RDONLY | O_APPEND):
-            mode="a+";
-            break;
-        default:
-            switch(flags & (O_RDONLY | O_WRONLY)){
-                case O_RDONLY:
-                    mode="r";
-                    break;
-                case O_WRONLY:
-                    mode="w";
-                    break;
-            }
-    }
-    file=fdopen(fd,mode);
-    hdl=malloc(sizeof(struct sftp_handle));
-    memset(hdl,0,sizeof(struct sftp_handle));
-    hdl->type=TYPE_FILE;
-    hdl->offset=0;
-    hdl->file=file;
-    hdl->name=strdup(msg->filename);
-    handle=sftp_handle_alloc(msg->sftp,hdl);
-    sftp_reply_handle(msg,handle);
-    free(handle);
-    return 0;
-}
-
-int sftploop(SSH_SESSION *session, SFTP_SESSION *sftp){
-    SFTP_CLIENT_MESSAGE *msg;
-    char buffer[PATH_MAX];
-    do {
-        msg=sftp_get_client_message(sftp);
-        if(!msg)
-            break;
-        switch(msg->type){
-            case SFTP_REALPATH:
-                ssh_say(1,"client realpath : %s\n",msg->filename);
-                realpath(msg->filename,buffer);
-                ssh_say(2,"responding %s\n",buffer);
-                sftp_reply_name(msg, buffer, NULL);
-                break;
-            case SFTP_OPENDIR:
-                ssh_say(1,"client opendir(%s)\n",msg->filename);
-                handle_opendir(msg);
-                break;
-            case SFTP_LSTAT:
-            case SFTP_STAT:
-                ssh_say(1,"client stat(%s)\n",msg->filename);
-                handle_stat(msg,msg->type==SFTP_STAT);
-                break;
-            case SFTP_READDIR:
-                ssh_say(1,"client readdir\n");
-                handle_readdir(msg);
-                break;
-            case SFTP_CLOSE:
-                ssh_say(1,"client close\n");
-                handle_close(msg);
-                break;
-            case SFTP_OPEN:
-                ssh_say(1,"client open(%s)\n",msg->filename);
-                handle_open(msg);
-                break;
-            case SFTP_READ:
-                ssh_say(1,"client read(off=%ld,len=%d)\n",msg->offset,msg->len);
-                handle_read(msg);
-                break;
-            default:
-                ssh_say(1,"Unknown message %d\n",msg->type);
-                sftp_reply_status(msg,SSH_FX_OP_UNSUPPORTED,"Unsupported message");
-        }
-        sftp_client_message_free(msg);
-    } while (1);
-    if(!msg)
-        return 1;
-    return 0;
-}
-
-int do_auth(SSH_SESSION *session){
-    SSH_MESSAGE *message;
-    int auth=-1;
-    do {
-        message=ssh_message_get(session);
-        if(!message)
-            break;
-        switch(ssh_message_type(message)){
-            case SSH_AUTH_REQUEST:
-                switch(ssh_message_subtype(message)){
-                    case SSH_AUTH_PASSWORD:
-                        ssh_say(1,"User %s wants to auth by password\n",
-                               ssh_message_auth_user(message));
-                        auth=auth_password(ssh_message_auth_user(message),
-                                           ssh_message_auth_password(message));
-                        switch(auth){
-                            case 1:
-                                ssh_say(1,"Authentication success\n");
-                                ssh_message_auth_reply_success(message,0);
-                                break;
-                            case -1:
-                                ssh_say(1,"Too much tries\n");
-                                // too much auth tried
-                                ssh_disconnect(session);
-                                exit(1);
-                            case 0:
-                                ssh_say(1,"Auth refused\n");
-                                break;
-                        }
-                        if(auth==1){
-                            break;
-                        } else {
-                            ssh_message_auth_set_methods(message,SSH_AUTH_PASSWORD);
-                            ssh_message_reply_default(message);
-                        } 
-                        break;
-                        // not authenticated, send default message
-                    case SSH_AUTH_NONE:
-                        if(user_nopassword(ssh_message_auth_user(message))){
-                            if(postauth_conf(ssh_message_auth_user(message))==0){
-                                ssh_message_auth_reply_success(message,0);
-                                auth=1;
-                                ssh_say(1,"Authentication success for %s(no password)\n",
-                                    ssh_message_auth_user(message));
-                                break;
-                            } else {
-                                ssh_say(1,"Post-auth failed\n");
-                                ssh_message_auth_set_methods(message,SSH_AUTH_PASSWORD);
-                                ssh_message_reply_default(message);
-                            }
-                        } else {
-                            ssh_message_auth_set_methods(message,SSH_AUTH_PASSWORD);
-                            ssh_message_reply_default(message);
-                        }
-                        break;
-                    default:
-                        ssh_message_auth_set_methods(message,SSH_AUTH_PASSWORD);
-                        ssh_message_reply_default(message);
-                        break;
-                }
-                break;
-            default:
-                ssh_message_reply_default(message);
-        }
-        ssh_message_free(message);
-    } while (auth!=1);
-    return auth;
-}
 
 CHANNEL *recv_channel(SSH_SESSION *session){
     CHANNEL *chan=NULL;