| 1 |
30 |
unneback |
/* FIXME: 1. Parse command is a hack. We can do better.
|
| 2 |
|
|
* 2. chdir is a hack. We can do better.
|
| 3 |
|
|
* 3. PWD doesn't work.
|
| 4 |
|
|
* 4. Some sort of access control?
|
| 5 |
|
|
*
|
| 6 |
|
|
* FTP Server Daemon
|
| 7 |
|
|
*
|
| 8 |
|
|
* Submitted by: Jake Janovetz <janovetz@tempest.ece.uiuc.edu>
|
| 9 |
|
|
*
|
| 10 |
|
|
* $Id: ftpd.c,v 1.2 2001-09-27 12:02:00 chris Exp $
|
| 11 |
|
|
*/
|
| 12 |
|
|
|
| 13 |
|
|
/**************************************************************************
|
| 14 |
|
|
* ftpd.c *
|
| 15 |
|
|
**************************************************************************
|
| 16 |
|
|
* Description: *
|
| 17 |
|
|
* *
|
| 18 |
|
|
* This file contains the daemon which services requests that appear *
|
| 19 |
|
|
* on the FTP port. This server is compatible with FTP, but it *
|
| 20 |
|
|
* also provides 'hooks' to make it usable in situations where files *
|
| 21 |
|
|
* are not used/necessary. Once the server is started, it runs *
|
| 22 |
|
|
* forever. *
|
| 23 |
|
|
* *
|
| 24 |
|
|
* *
|
| 25 |
|
|
* Organization: *
|
| 26 |
|
|
* *
|
| 27 |
|
|
* The FTP daemon is started upon boot. It runs all the time *
|
| 28 |
|
|
* and waits for connections on the known FTP port (21). When *
|
| 29 |
|
|
* a connection is made, it starts a 'session' task. That *
|
| 30 |
|
|
* session then interacts with the remote host. When the session *
|
| 31 |
|
|
* is complete, the session task deletes itself. The daemon still *
|
| 32 |
|
|
* runs, however. *
|
| 33 |
|
|
* *
|
| 34 |
|
|
* *
|
| 35 |
|
|
* Supported commands are: *
|
| 36 |
|
|
* *
|
| 37 |
|
|
* RETR xxx - Sends a file from the client. *
|
| 38 |
|
|
* STOR xxx - Receives a file from the client. xxx = filename. *
|
| 39 |
|
|
* LIST xxx - Sends a file list to the client. *
|
| 40 |
|
|
* (LIST xxx isn't working yet...) *
|
| 41 |
|
|
* USER - Does nothing. *
|
| 42 |
|
|
* PASS - Does nothing. *
|
| 43 |
|
|
* SYST - Replies with the system type (`RTEMS'). *
|
| 44 |
|
|
* DELE xxx - Delete file xxx. *
|
| 45 |
|
|
* MKD xxx - Create directory xxx. *
|
| 46 |
|
|
* RMD xxx - Remove directory xxx. *
|
| 47 |
|
|
* PWD - Print working directory. *
|
| 48 |
|
|
* CWD xxx - Change working directory. *
|
| 49 |
|
|
* SITE CHMOD xxx yyy - Change permissions on file yyy to xxx. *
|
| 50 |
|
|
* PORT a,b,c,d,x,y - Setup for a data port to IP address a.b.c.d *
|
| 51 |
|
|
* and port (x*256 + y). *
|
| 52 |
|
|
* *
|
| 53 |
|
|
* *
|
| 54 |
|
|
* The public routines contained in this file are: *
|
| 55 |
|
|
* *
|
| 56 |
|
|
* rtems_initialize_ftpd_start - Starts the server daemon, then *
|
| 57 |
|
|
* returns to its caller. *
|
| 58 |
|
|
* *
|
| 59 |
|
|
* *
|
| 60 |
|
|
* The private routines contained in this file are: *
|
| 61 |
|
|
* *
|
| 62 |
|
|
* rtems_ftpd_send_reply - Sends a reply code and text through the *
|
| 63 |
|
|
* control port. *
|
| 64 |
|
|
* rtems_ftpd_command_retrieve - Performs to "RETR" command. *
|
| 65 |
|
|
* rtems_ftpd_command_store - Performs the "STOR" command. *
|
| 66 |
|
|
* rtems_ftpd_command_list - Performs the "LIST" command. *
|
| 67 |
|
|
* rtems_ftpd_command_port - Opens a data port (the "PORT" command). *
|
| 68 |
|
|
* rtems_ftpd_parse_command - Parses an incoming command. *
|
| 69 |
|
|
* rtmes_ftpd_session - Begins a service session. *
|
| 70 |
|
|
* rtems_ftpd_daemon - Listens on the FTP port for service *
|
| 71 |
|
|
* requests. *
|
| 72 |
|
|
*------------------------------------------------------------------------*
|
| 73 |
|
|
* Jake Janovetz *
|
| 74 |
|
|
* University of Illinois *
|
| 75 |
|
|
* 1406 West Green Street *
|
| 76 |
|
|
* Urbana IL 61801 *
|
| 77 |
|
|
**************************************************************************
|
| 78 |
|
|
* Change History: *
|
| 79 |
|
|
* 12/01/97 - Creation (JWJ) *
|
| 80 |
|
|
*************************************************************************/
|
| 81 |
|
|
|
| 82 |
|
|
#include <stdio.h>
|
| 83 |
|
|
#include <stdlib.h>
|
| 84 |
|
|
#include <string.h>
|
| 85 |
|
|
#include <unistd.h>
|
| 86 |
|
|
#include <fcntl.h>
|
| 87 |
|
|
#include <dirent.h>
|
| 88 |
|
|
|
| 89 |
|
|
#include <rtems.h>
|
| 90 |
|
|
#include <rtems/rtems_bsdnet.h>
|
| 91 |
|
|
#include <rtems/error.h>
|
| 92 |
|
|
#include <syslog.h>
|
| 93 |
|
|
|
| 94 |
|
|
#include <sys/types.h>
|
| 95 |
|
|
#include <sys/socket.h>
|
| 96 |
|
|
#include <arpa/ftp.h>
|
| 97 |
|
|
#include <netinet/in.h>
|
| 98 |
|
|
|
| 99 |
|
|
#include "ftpd.h"
|
| 100 |
|
|
|
| 101 |
|
|
|
| 102 |
|
|
extern struct rtems_ftpd_configuration rtems_ftpd_configuration;
|
| 103 |
|
|
|
| 104 |
|
|
/**************************************************************************
|
| 105 |
|
|
* Meanings of first and second digits of reply codes:
|
| 106 |
|
|
*
|
| 107 |
|
|
* Reply: Description:
|
| 108 |
|
|
*-------- --------------
|
| 109 |
|
|
* 1yz Positive preliminary reply. The action is being started but
|
| 110 |
|
|
* expect another reply before sending another command.
|
| 111 |
|
|
* 2yz Positive completion reply. A new command can be sent.
|
| 112 |
|
|
* 3yz Positive intermediate reply. The command has been accpeted
|
| 113 |
|
|
* but another command must be sent.
|
| 114 |
|
|
* 4yz Transient negative completion reply. The requested action did
|
| 115 |
|
|
* not take place, but the error condition is temporary so the
|
| 116 |
|
|
* command can be reissued later.
|
| 117 |
|
|
* 5yz Permanent negative completion reply. The command was not
|
| 118 |
|
|
* accepted and should not be retried.
|
| 119 |
|
|
*-------------------------------------------------------------------------
|
| 120 |
|
|
* x0z Syntax errors.
|
| 121 |
|
|
* x1z Information.
|
| 122 |
|
|
* x2z Connections. Replies referring to the control or data
|
| 123 |
|
|
* connections.
|
| 124 |
|
|
* x3z Authentication and accounting. Replies for the login or
|
| 125 |
|
|
* accounting commands.
|
| 126 |
|
|
* x4z Unspecified.
|
| 127 |
|
|
* x5z Filesystem status.
|
| 128 |
|
|
*************************************************************************/
|
| 129 |
|
|
|
| 130 |
|
|
|
| 131 |
|
|
/**************************************************************************
|
| 132 |
|
|
* SessionInfo structure.
|
| 133 |
|
|
*
|
| 134 |
|
|
* The following structure is allocated for each session. The pointer
|
| 135 |
|
|
* to this structure is contained in the tasks notepad entry.
|
| 136 |
|
|
*************************************************************************/
|
| 137 |
|
|
typedef struct
|
| 138 |
|
|
{
|
| 139 |
|
|
struct sockaddr_in data_addr; /* Data address for PORT commands */
|
| 140 |
|
|
FILE *ctrl_fp; /* File pointer for control connection */
|
| 141 |
|
|
char cwd[255]; /* Current working directory */
|
| 142 |
|
|
/* Login -- future use -- */
|
| 143 |
|
|
int xfer_mode; /* Transfer mode (ASCII/binary) */
|
| 144 |
|
|
} FTPD_SessionInfo_t;
|
| 145 |
|
|
|
| 146 |
|
|
|
| 147 |
|
|
#define FTPD_SERVER_MESSAGE "RTEMS FTP server (Version 1.0-JWJ) ready."
|
| 148 |
|
|
#define FTPD_WELCOME_MESSAGE \
|
| 149 |
|
|
"Welcome to the RTEMS FTP server.\n" \
|
| 150 |
|
|
"\n" \
|
| 151 |
|
|
"Login accepted.\n"
|
| 152 |
|
|
|
| 153 |
|
|
|
| 154 |
|
|
/**************************************************************************
|
| 155 |
|
|
* Function: rtems_ftpd_send_reply *
|
| 156 |
|
|
**************************************************************************
|
| 157 |
|
|
* Description: *
|
| 158 |
|
|
* *
|
| 159 |
|
|
* This procedure sends a reply to the client via the control *
|
| 160 |
|
|
* connection. *
|
| 161 |
|
|
* *
|
| 162 |
|
|
* *
|
| 163 |
|
|
* Inputs: *
|
| 164 |
|
|
* *
|
| 165 |
|
|
* int code - The 3-digit reply code. *
|
| 166 |
|
|
* char *text - Reply text. *
|
| 167 |
|
|
* *
|
| 168 |
|
|
* Output: *
|
| 169 |
|
|
* *
|
| 170 |
|
|
* none *
|
| 171 |
|
|
* *
|
| 172 |
|
|
**************************************************************************
|
| 173 |
|
|
* Change History: *
|
| 174 |
|
|
* 12/01/97 - Creation (JWJ) *
|
| 175 |
|
|
*************************************************************************/
|
| 176 |
|
|
static void
|
| 177 |
|
|
rtems_ftpd_send_reply(int code, char *text)
|
| 178 |
|
|
{
|
| 179 |
|
|
rtems_status_code sc;
|
| 180 |
|
|
FTPD_SessionInfo_t *info = NULL;
|
| 181 |
|
|
char str[80];
|
| 182 |
|
|
|
| 183 |
|
|
|
| 184 |
|
|
sc = rtems_task_get_note(RTEMS_SELF, RTEMS_NOTEPAD_0,
|
| 185 |
|
|
(rtems_unsigned32 *)&info);
|
| 186 |
|
|
|
| 187 |
|
|
/***********************************************************************
|
| 188 |
|
|
* code must be a 3-digit number.
|
| 189 |
|
|
**********************************************************************/
|
| 190 |
|
|
if ((code < 100) || (code > 999))
|
| 191 |
|
|
{
|
| 192 |
|
|
syslog(LOG_ERR, "ftpd: Code not 3-digits.");
|
| 193 |
|
|
return;
|
| 194 |
|
|
}
|
| 195 |
|
|
|
| 196 |
|
|
/***********************************************************************
|
| 197 |
|
|
* If a text reply exists, add it to the reply data.
|
| 198 |
|
|
**********************************************************************/
|
| 199 |
|
|
if (text != NULL)
|
| 200 |
|
|
{
|
| 201 |
|
|
sprintf(str, "%d %.70s\r\n", code, text);
|
| 202 |
|
|
fprintf(info->ctrl_fp, "%d %.70s\r\n", code, text);
|
| 203 |
|
|
}
|
| 204 |
|
|
else
|
| 205 |
|
|
{
|
| 206 |
|
|
sprintf(str, "%d\r\n", code);
|
| 207 |
|
|
fprintf(info->ctrl_fp, "%d\r\n", code);
|
| 208 |
|
|
}
|
| 209 |
|
|
fflush(info->ctrl_fp);
|
| 210 |
|
|
}
|
| 211 |
|
|
|
| 212 |
|
|
|
| 213 |
|
|
/**************************************************************************
|
| 214 |
|
|
* Function: rtems_ftpd_command_retrieve *
|
| 215 |
|
|
**************************************************************************
|
| 216 |
|
|
* Description: *
|
| 217 |
|
|
* *
|
| 218 |
|
|
* This performs the "RETR" command. A data connection must already *
|
| 219 |
|
|
* be open (via the "PORT" command.) Here, we send the data to the *
|
| 220 |
|
|
* connection. *
|
| 221 |
|
|
* *
|
| 222 |
|
|
* *
|
| 223 |
|
|
* Inputs: *
|
| 224 |
|
|
* *
|
| 225 |
|
|
* char *filename - Source filename. *
|
| 226 |
|
|
* *
|
| 227 |
|
|
* Output: *
|
| 228 |
|
|
* *
|
| 229 |
|
|
* int - 0 for reply sent. *
|
| 230 |
|
|
* 1 for no reply sent. *
|
| 231 |
|
|
* *
|
| 232 |
|
|
**************************************************************************
|
| 233 |
|
|
* Change History: *
|
| 234 |
|
|
* 04/29/98 - Creation (JWJ) *
|
| 235 |
|
|
*************************************************************************/
|
| 236 |
|
|
static int
|
| 237 |
|
|
rtems_ftpd_command_retrieve(char *filename)
|
| 238 |
|
|
{
|
| 239 |
|
|
int s;
|
| 240 |
|
|
int n;
|
| 241 |
|
|
int fd;
|
| 242 |
|
|
unsigned char *bufr;
|
| 243 |
|
|
rtems_status_code sc;
|
| 244 |
|
|
FTPD_SessionInfo_t *info = NULL;
|
| 245 |
|
|
|
| 246 |
|
|
|
| 247 |
|
|
sc = rtems_task_get_note(RTEMS_SELF, RTEMS_NOTEPAD_0,
|
| 248 |
|
|
(rtems_unsigned32 *)&info);
|
| 249 |
|
|
|
| 250 |
|
|
if ((fd = open(filename, O_RDONLY)) == -1)
|
| 251 |
|
|
{
|
| 252 |
|
|
rtems_ftpd_send_reply(450, "Error opening file.");
|
| 253 |
|
|
return(0);
|
| 254 |
|
|
}
|
| 255 |
|
|
|
| 256 |
|
|
bufr = (unsigned char *)malloc(BUFSIZ);
|
| 257 |
|
|
if (bufr == NULL)
|
| 258 |
|
|
{
|
| 259 |
|
|
rtems_ftpd_send_reply(440, "Server error - malloc fail.");
|
| 260 |
|
|
close(fd);
|
| 261 |
|
|
return(0);
|
| 262 |
|
|
}
|
| 263 |
|
|
|
| 264 |
|
|
/***********************************************************************
|
| 265 |
|
|
* Connect to the data connection (PORT made in an earlier PORT call).
|
| 266 |
|
|
**********************************************************************/
|
| 267 |
|
|
rtems_ftpd_send_reply(150, "BINARY data connection.");
|
| 268 |
|
|
s = socket(AF_INET, SOCK_STREAM, 0);
|
| 269 |
|
|
if (connect(s, (struct sockaddr *)&info->data_addr,
|
| 270 |
|
|
sizeof(struct sockaddr)) < 0)
|
| 271 |
|
|
{
|
| 272 |
|
|
rtems_ftpd_send_reply(420, "Server error - could not connect socket.");
|
| 273 |
|
|
free(bufr);
|
| 274 |
|
|
close(fd);
|
| 275 |
|
|
close(s);
|
| 276 |
|
|
return(1);
|
| 277 |
|
|
}
|
| 278 |
|
|
|
| 279 |
|
|
/***********************************************************************
|
| 280 |
|
|
* Send the data over the ether.
|
| 281 |
|
|
**********************************************************************/
|
| 282 |
|
|
while ((n = read(fd, bufr, BUFSIZ)) > 0)
|
| 283 |
|
|
{
|
| 284 |
|
|
send(s, bufr, n, 0);
|
| 285 |
|
|
bufr[n-1] = '\0';
|
| 286 |
|
|
}
|
| 287 |
|
|
|
| 288 |
|
|
if (n == 0)
|
| 289 |
|
|
{
|
| 290 |
|
|
rtems_ftpd_send_reply(210, "File sent successfully.");
|
| 291 |
|
|
}
|
| 292 |
|
|
else
|
| 293 |
|
|
{
|
| 294 |
|
|
rtems_ftpd_send_reply(450, "Retrieve failed.");
|
| 295 |
|
|
}
|
| 296 |
|
|
|
| 297 |
|
|
if (close(s) != 0)
|
| 298 |
|
|
{
|
| 299 |
|
|
syslog(LOG_ERR, "ftpd: Error closing data socket");
|
| 300 |
|
|
}
|
| 301 |
|
|
|
| 302 |
|
|
free(bufr);
|
| 303 |
|
|
close(fd);
|
| 304 |
|
|
return(0);
|
| 305 |
|
|
}
|
| 306 |
|
|
|
| 307 |
|
|
|
| 308 |
|
|
/**************************************************************************
|
| 309 |
|
|
* Function: rtems_ftpd_command_store *
|
| 310 |
|
|
**************************************************************************
|
| 311 |
|
|
* Description: *
|
| 312 |
|
|
* *
|
| 313 |
|
|
* This performs the "STOR" command. A data connection must already *
|
| 314 |
|
|
* be open (via the "PORT" command.) Here, we get the data from the *
|
| 315 |
|
|
* connection and figure out what to do with it. *
|
| 316 |
|
|
* *
|
| 317 |
|
|
* *
|
| 318 |
|
|
* Inputs: *
|
| 319 |
|
|
* *
|
| 320 |
|
|
* char *filename - Destination filename. *
|
| 321 |
|
|
* *
|
| 322 |
|
|
* Output: *
|
| 323 |
|
|
* *
|
| 324 |
|
|
* int - 0 for success. *
|
| 325 |
|
|
* 1 for failure. *
|
| 326 |
|
|
* *
|
| 327 |
|
|
**************************************************************************
|
| 328 |
|
|
* Change History: *
|
| 329 |
|
|
* 12/01/97 - Creation (JWJ) *
|
| 330 |
|
|
*************************************************************************/
|
| 331 |
|
|
static int
|
| 332 |
|
|
rtems_ftpd_command_store(char *filename)
|
| 333 |
|
|
{
|
| 334 |
|
|
char *bufr;
|
| 335 |
|
|
int s;
|
| 336 |
|
|
int n;
|
| 337 |
|
|
unsigned long size = 0;
|
| 338 |
|
|
rtems_status_code sc;
|
| 339 |
|
|
FTPD_SessionInfo_t *info = NULL;
|
| 340 |
|
|
struct rtems_ftpd_hook *usehook = NULL;
|
| 341 |
|
|
|
| 342 |
|
|
|
| 343 |
|
|
sc = rtems_task_get_note(RTEMS_SELF, RTEMS_NOTEPAD_0,
|
| 344 |
|
|
(rtems_unsigned32 *)&info);
|
| 345 |
|
|
|
| 346 |
|
|
bufr = (char *)malloc(BUFSIZ * sizeof(char));
|
| 347 |
|
|
if (bufr == NULL)
|
| 348 |
|
|
{
|
| 349 |
|
|
rtems_ftpd_send_reply(440, "Server error - malloc fail.");
|
| 350 |
|
|
return(1);
|
| 351 |
|
|
}
|
| 352 |
|
|
|
| 353 |
|
|
rtems_ftpd_send_reply(150, "BINARY data connection.");
|
| 354 |
|
|
|
| 355 |
|
|
s = socket(AF_INET, SOCK_STREAM, 0);
|
| 356 |
|
|
if (connect(s, (struct sockaddr *)&info->data_addr,
|
| 357 |
|
|
sizeof(struct sockaddr)) < 0)
|
| 358 |
|
|
{
|
| 359 |
|
|
free(bufr);
|
| 360 |
|
|
close(s);
|
| 361 |
|
|
return(1);
|
| 362 |
|
|
}
|
| 363 |
|
|
|
| 364 |
|
|
|
| 365 |
|
|
/***********************************************************************
|
| 366 |
|
|
* File: "/dev/null" just throws the data away.
|
| 367 |
|
|
* Otherwise, search our list of hooks to see if we need to do something
|
| 368 |
|
|
* special.
|
| 369 |
|
|
**********************************************************************/
|
| 370 |
|
|
if (!strncmp("/dev/null", filename, 9))
|
| 371 |
|
|
{
|
| 372 |
|
|
while ((n = read(s, bufr, BUFSIZ)) > 0);
|
| 373 |
|
|
}
|
| 374 |
|
|
else if (rtems_ftpd_configuration.hooks != NULL)
|
| 375 |
|
|
{
|
| 376 |
|
|
struct rtems_ftpd_hook *hook;
|
| 377 |
|
|
int i;
|
| 378 |
|
|
|
| 379 |
|
|
i = 0;
|
| 380 |
|
|
hook = &rtems_ftpd_configuration.hooks[i++];
|
| 381 |
|
|
while (hook->filename != NULL)
|
| 382 |
|
|
{
|
| 383 |
|
|
if (!strcmp(hook->filename, filename))
|
| 384 |
|
|
{
|
| 385 |
|
|
usehook = hook;
|
| 386 |
|
|
break;
|
| 387 |
|
|
}
|
| 388 |
|
|
hook = &rtems_ftpd_configuration.hooks[i++];
|
| 389 |
|
|
}
|
| 390 |
|
|
}
|
| 391 |
|
|
|
| 392 |
|
|
if (usehook != NULL)
|
| 393 |
|
|
{
|
| 394 |
|
|
char *bigBufr;
|
| 395 |
|
|
|
| 396 |
|
|
/***********************************************************************
|
| 397 |
|
|
* Allocate space for our "file".
|
| 398 |
|
|
**********************************************************************/
|
| 399 |
|
|
bigBufr = (char *)malloc(
|
| 400 |
|
|
rtems_ftpd_configuration.max_hook_filesize * sizeof(char));
|
| 401 |
|
|
if (bigBufr == NULL)
|
| 402 |
|
|
{
|
| 403 |
|
|
rtems_ftpd_send_reply(440, "Server error - malloc fail.");
|
| 404 |
|
|
free(bufr);
|
| 405 |
|
|
return(1);
|
| 406 |
|
|
}
|
| 407 |
|
|
|
| 408 |
|
|
/***********************************************************************
|
| 409 |
|
|
* Retrieve the file into our buffer space.
|
| 410 |
|
|
**********************************************************************/
|
| 411 |
|
|
size = 0;
|
| 412 |
|
|
while ((n = read(s, bufr, BUFSIZ)) > 0)
|
| 413 |
|
|
{
|
| 414 |
|
|
if (size + n >
|
| 415 |
|
|
rtems_ftpd_configuration.max_hook_filesize * sizeof(char))
|
| 416 |
|
|
{
|
| 417 |
|
|
rtems_ftpd_send_reply(440, "Server error - Buffer size exceeded.");
|
| 418 |
|
|
free(bufr);
|
| 419 |
|
|
free(bigBufr);
|
| 420 |
|
|
close(s);
|
| 421 |
|
|
return(1);
|
| 422 |
|
|
}
|
| 423 |
|
|
memcpy(&bigBufr[size], bufr, n);
|
| 424 |
|
|
size += n;
|
| 425 |
|
|
}
|
| 426 |
|
|
close(s);
|
| 427 |
|
|
|
| 428 |
|
|
/***********************************************************************
|
| 429 |
|
|
* Call our hook.
|
| 430 |
|
|
**********************************************************************/
|
| 431 |
|
|
if ((usehook->hook_function)(bigBufr, size) == 0)
|
| 432 |
|
|
{
|
| 433 |
|
|
rtems_ftpd_send_reply(210, "File transferred successfully.");
|
| 434 |
|
|
}
|
| 435 |
|
|
else
|
| 436 |
|
|
{
|
| 437 |
|
|
rtems_ftpd_send_reply(440, "File transfer failed.");
|
| 438 |
|
|
}
|
| 439 |
|
|
free(bigBufr);
|
| 440 |
|
|
}
|
| 441 |
|
|
else
|
| 442 |
|
|
{
|
| 443 |
|
|
int fd;
|
| 444 |
|
|
size_t written;
|
| 445 |
|
|
|
| 446 |
|
|
fd = creat(filename, S_IRUSR | S_IWUSR |
|
| 447 |
|
|
S_IRGRP | S_IWGRP |
|
| 448 |
|
|
S_IROTH | S_IWOTH);
|
| 449 |
|
|
if (fd == -1)
|
| 450 |
|
|
{
|
| 451 |
|
|
rtems_ftpd_send_reply(450, "Could not open file.");
|
| 452 |
|
|
close(s);
|
| 453 |
|
|
free(bufr);
|
| 454 |
|
|
return(1);
|
| 455 |
|
|
}
|
| 456 |
|
|
while ((n = read(s, bufr, BUFSIZ)) > 0)
|
| 457 |
|
|
{
|
| 458 |
|
|
written = write(fd, bufr, n);
|
| 459 |
|
|
if (written == -1)
|
| 460 |
|
|
{
|
| 461 |
|
|
rtems_ftpd_send_reply(450, "Error during write.");
|
| 462 |
|
|
close(fd);
|
| 463 |
|
|
close(s);
|
| 464 |
|
|
free(bufr);
|
| 465 |
|
|
return(1);
|
| 466 |
|
|
}
|
| 467 |
|
|
}
|
| 468 |
|
|
close(fd);
|
| 469 |
|
|
close(s);
|
| 470 |
|
|
rtems_ftpd_send_reply(226, "Transfer complete.");
|
| 471 |
|
|
}
|
| 472 |
|
|
|
| 473 |
|
|
free(bufr);
|
| 474 |
|
|
return(0);
|
| 475 |
|
|
}
|
| 476 |
|
|
|
| 477 |
|
|
|
| 478 |
|
|
/**************************************************************************
|
| 479 |
|
|
* Function: rtems_ftpd_command_list *
|
| 480 |
|
|
**************************************************************************
|
| 481 |
|
|
* Description: *
|
| 482 |
|
|
* *
|
| 483 |
|
|
* Sends a file list through a data connection. The data *
|
| 484 |
|
|
* connection must have already been opened with the "PORT" command. *
|
| 485 |
|
|
* *
|
| 486 |
|
|
* *
|
| 487 |
|
|
* Inputs: *
|
| 488 |
|
|
* *
|
| 489 |
|
|
* char *fname - File (or directory) to list. *
|
| 490 |
|
|
* *
|
| 491 |
|
|
* Output: *
|
| 492 |
|
|
* *
|
| 493 |
|
|
* none *
|
| 494 |
|
|
* *
|
| 495 |
|
|
**************************************************************************
|
| 496 |
|
|
* Change History: *
|
| 497 |
|
|
* 12/01/97 - Creation (JWJ) *
|
| 498 |
|
|
*************************************************************************/
|
| 499 |
|
|
static void
|
| 500 |
|
|
rtems_ftpd_command_list(char *fname)
|
| 501 |
|
|
{
|
| 502 |
|
|
int s;
|
| 503 |
|
|
rtems_status_code sc;
|
| 504 |
|
|
FTPD_SessionInfo_t *info = NULL;
|
| 505 |
|
|
DIR *dirp;
|
| 506 |
|
|
struct dirent *dp;
|
| 507 |
|
|
char dirline[255];
|
| 508 |
|
|
struct stat stat_buf;
|
| 509 |
|
|
|
| 510 |
|
|
|
| 511 |
|
|
sc = rtems_task_get_note(RTEMS_SELF, RTEMS_NOTEPAD_0,
|
| 512 |
|
|
(rtems_unsigned32 *)&info);
|
| 513 |
|
|
|
| 514 |
|
|
rtems_ftpd_send_reply(150, "ASCII data connection for LIST.");
|
| 515 |
|
|
|
| 516 |
|
|
s = socket(AF_INET, SOCK_STREAM, 0);
|
| 517 |
|
|
if (connect(s, (struct sockaddr *)&info->data_addr,
|
| 518 |
|
|
sizeof(struct sockaddr)) < 0)
|
| 519 |
|
|
{
|
| 520 |
|
|
syslog(LOG_ERR, "ftpd: Error connecting to data socket.");
|
| 521 |
|
|
return;
|
| 522 |
|
|
}
|
| 523 |
|
|
|
| 524 |
|
|
if ((dirp = opendir(fname)) == NULL)
|
| 525 |
|
|
{
|
| 526 |
|
|
sprintf(dirline, "%s: No such file or directory.%s\n",
|
| 527 |
|
|
fname, (info->xfer_mode==TYPE_A)?("\r"):(""));
|
| 528 |
|
|
send(s, dirline, strlen(dirline), 0);
|
| 529 |
|
|
close(s);
|
| 530 |
|
|
rtems_ftpd_send_reply(226, "Transfer complete.");
|
| 531 |
|
|
return;
|
| 532 |
|
|
}
|
| 533 |
|
|
while ((dp = readdir(dirp)) != NULL)
|
| 534 |
|
|
{
|
| 535 |
|
|
if (stat(dp->d_name, &stat_buf) == 0)
|
| 536 |
|
|
{
|
| 537 |
|
|
sprintf(dirline, "%c%c%c%c%c%c%c%c%c%c %5d %5d %11d %s%s\n",
|
| 538 |
|
|
(S_ISLNK(stat_buf.st_mode)?('l'):
|
| 539 |
|
|
(S_ISDIR(stat_buf.st_mode)?('d'):('-'))),
|
| 540 |
|
|
(stat_buf.st_mode & S_IRUSR)?('r'):('-'),
|
| 541 |
|
|
(stat_buf.st_mode & S_IWUSR)?('w'):('-'),
|
| 542 |
|
|
(stat_buf.st_mode & S_IXUSR)?('x'):('-'),
|
| 543 |
|
|
(stat_buf.st_mode & S_IRGRP)?('r'):('-'),
|
| 544 |
|
|
(stat_buf.st_mode & S_IWGRP)?('w'):('-'),
|
| 545 |
|
|
(stat_buf.st_mode & S_IXGRP)?('x'):('-'),
|
| 546 |
|
|
(stat_buf.st_mode & S_IROTH)?('r'):('-'),
|
| 547 |
|
|
(stat_buf.st_mode & S_IWOTH)?('w'):('-'),
|
| 548 |
|
|
(stat_buf.st_mode & S_IXOTH)?('x'):('-'),
|
| 549 |
|
|
(int)stat_buf.st_uid,
|
| 550 |
|
|
(int)stat_buf.st_gid,
|
| 551 |
|
|
(int)stat_buf.st_size,
|
| 552 |
|
|
dp->d_name,
|
| 553 |
|
|
(info->xfer_mode==TYPE_A)?("\r"):(""));
|
| 554 |
|
|
send(s, dirline, strlen(dirline), 0);
|
| 555 |
|
|
}
|
| 556 |
|
|
}
|
| 557 |
|
|
closedir(dirp);
|
| 558 |
|
|
|
| 559 |
|
|
close(s);
|
| 560 |
|
|
rtems_ftpd_send_reply(226, "Transfer complete.");
|
| 561 |
|
|
}
|
| 562 |
|
|
|
| 563 |
|
|
|
| 564 |
|
|
/*
|
| 565 |
|
|
* Cheesy way to change directories
|
| 566 |
|
|
*/
|
| 567 |
|
|
static void
|
| 568 |
|
|
rtems_ftpd_CWD(char *dir)
|
| 569 |
|
|
{
|
| 570 |
|
|
rtems_status_code sc;
|
| 571 |
|
|
FTPD_SessionInfo_t *info = NULL;
|
| 572 |
|
|
|
| 573 |
|
|
|
| 574 |
|
|
sc = rtems_task_get_note(RTEMS_SELF, RTEMS_NOTEPAD_0,
|
| 575 |
|
|
(rtems_unsigned32 *)&info);
|
| 576 |
|
|
|
| 577 |
|
|
if (chdir(dir) == 0)
|
| 578 |
|
|
{
|
| 579 |
|
|
rtems_ftpd_send_reply(250, "CWD command successful.");
|
| 580 |
|
|
}
|
| 581 |
|
|
else
|
| 582 |
|
|
{
|
| 583 |
|
|
rtems_ftpd_send_reply(550, "CWD command failed.");
|
| 584 |
|
|
}
|
| 585 |
|
|
}
|
| 586 |
|
|
|
| 587 |
|
|
|
| 588 |
|
|
/**************************************************************************
|
| 589 |
|
|
* Function: rtems_ftpd_command_port *
|
| 590 |
|
|
**************************************************************************
|
| 591 |
|
|
* Description: *
|
| 592 |
|
|
* *
|
| 593 |
|
|
* This procedure opens up a data port given the IP address of the *
|
| 594 |
|
|
* remote machine and the port on the remote machine. This connection *
|
| 595 |
|
|
* will then be used to transfer data between the hosts. *
|
| 596 |
|
|
* *
|
| 597 |
|
|
* *
|
| 598 |
|
|
* Inputs: *
|
| 599 |
|
|
* *
|
| 600 |
|
|
* char *bufr - Arguments to the "PORT" command. *
|
| 601 |
|
|
* *
|
| 602 |
|
|
* *
|
| 603 |
|
|
* Output: *
|
| 604 |
|
|
* *
|
| 605 |
|
|
* none *
|
| 606 |
|
|
* *
|
| 607 |
|
|
**************************************************************************
|
| 608 |
|
|
* Change History: *
|
| 609 |
|
|
* 12/01/97 - Creation (JWJ) *
|
| 610 |
|
|
*************************************************************************/
|
| 611 |
|
|
static void
|
| 612 |
|
|
rtems_ftpd_command_port(char *bufr)
|
| 613 |
|
|
{
|
| 614 |
|
|
char *ip;
|
| 615 |
|
|
char *port;
|
| 616 |
|
|
int ip0, ip1, ip2, ip3, port0, port1;
|
| 617 |
|
|
rtems_status_code sc;
|
| 618 |
|
|
FTPD_SessionInfo_t *info = NULL;
|
| 619 |
|
|
|
| 620 |
|
|
|
| 621 |
|
|
sc = rtems_task_get_note(RTEMS_SELF, RTEMS_NOTEPAD_0,
|
| 622 |
|
|
(rtems_unsigned32 *)&info);
|
| 623 |
|
|
|
| 624 |
|
|
sscanf(bufr, "%d,%d,%d,%d,%d,%d", &ip0, &ip1, &ip2, &ip3, &port0, &port1);
|
| 625 |
|
|
ip = (char *)&(info->data_addr.sin_addr);
|
| 626 |
|
|
ip[0] = ip0 & 0xff;
|
| 627 |
|
|
ip[1] = ip1 & 0xff;
|
| 628 |
|
|
ip[2] = ip2 & 0xff;
|
| 629 |
|
|
ip[3] = ip3 & 0xff;
|
| 630 |
|
|
port = (char *)&(info->data_addr.sin_port);
|
| 631 |
|
|
port[0] = port0 & 0xff;
|
| 632 |
|
|
port[1] = port1 & 0xff;
|
| 633 |
|
|
info->data_addr.sin_family = AF_INET;
|
| 634 |
|
|
}
|
| 635 |
|
|
|
| 636 |
|
|
|
| 637 |
|
|
/**************************************************************************
|
| 638 |
|
|
* Function: rtems_ftpd_parse_command *
|
| 639 |
|
|
**************************************************************************
|
| 640 |
|
|
* Description: *
|
| 641 |
|
|
* *
|
| 642 |
|
|
* Here, we parse the commands that have come through the control *
|
| 643 |
|
|
* connection. *
|
| 644 |
|
|
* *
|
| 645 |
|
|
* FIXME: This section is somewhat of a hack. We should have a better *
|
| 646 |
|
|
* way to parse commands. *
|
| 647 |
|
|
* *
|
| 648 |
|
|
* Inputs: *
|
| 649 |
|
|
* *
|
| 650 |
|
|
* char *bufr - Pointer to the buffer which contains the command *
|
| 651 |
|
|
* text. *
|
| 652 |
|
|
* *
|
| 653 |
|
|
* Output: *
|
| 654 |
|
|
* *
|
| 655 |
|
|
* none *
|
| 656 |
|
|
* *
|
| 657 |
|
|
**************************************************************************
|
| 658 |
|
|
* Change History: *
|
| 659 |
|
|
* 12/01/97 - Creation (JWJ) *
|
| 660 |
|
|
*************************************************************************/
|
| 661 |
|
|
static void
|
| 662 |
|
|
rtems_ftpd_parse_command(char *bufr)
|
| 663 |
|
|
{
|
| 664 |
|
|
char fname[255];
|
| 665 |
|
|
rtems_status_code sc;
|
| 666 |
|
|
FTPD_SessionInfo_t *info = NULL;
|
| 667 |
|
|
|
| 668 |
|
|
|
| 669 |
|
|
sc = rtems_task_get_note(RTEMS_SELF, RTEMS_NOTEPAD_0,
|
| 670 |
|
|
(rtems_unsigned32 *)&info);
|
| 671 |
|
|
|
| 672 |
|
|
if (!strncmp("PORT", bufr, 4))
|
| 673 |
|
|
{
|
| 674 |
|
|
rtems_ftpd_send_reply(200, "PORT command successful.");
|
| 675 |
|
|
rtems_ftpd_command_port(&bufr[5]);
|
| 676 |
|
|
}
|
| 677 |
|
|
else if (!strncmp("RETR", bufr, 4))
|
| 678 |
|
|
{
|
| 679 |
|
|
sscanf(&bufr[5], "%254s", fname);
|
| 680 |
|
|
rtems_ftpd_command_retrieve(fname);
|
| 681 |
|
|
}
|
| 682 |
|
|
else if (!strncmp("STOR", bufr, 4))
|
| 683 |
|
|
{
|
| 684 |
|
|
sscanf(&bufr[5], "%254s", fname);
|
| 685 |
|
|
rtems_ftpd_command_store(fname);
|
| 686 |
|
|
}
|
| 687 |
|
|
else if (!strncmp("LIST", bufr, 4))
|
| 688 |
|
|
{
|
| 689 |
|
|
if (bufr[5] == '\n')
|
| 690 |
|
|
{
|
| 691 |
|
|
rtems_ftpd_command_list(".");
|
| 692 |
|
|
}
|
| 693 |
|
|
else
|
| 694 |
|
|
{
|
| 695 |
|
|
sscanf(&bufr[5], "%254s", fname);
|
| 696 |
|
|
rtems_ftpd_command_list(fname);
|
| 697 |
|
|
}
|
| 698 |
|
|
}
|
| 699 |
|
|
else if (!strncmp("USER", bufr, 4))
|
| 700 |
|
|
{
|
| 701 |
|
|
rtems_ftpd_send_reply(230, "User logged in.");
|
| 702 |
|
|
}
|
| 703 |
|
|
else if (!strncmp("SYST", bufr, 4))
|
| 704 |
|
|
{
|
| 705 |
|
|
rtems_ftpd_send_reply(240, "RTEMS");
|
| 706 |
|
|
}
|
| 707 |
|
|
else if (!strncmp("TYPE", bufr, 4))
|
| 708 |
|
|
{
|
| 709 |
|
|
if (bufr[5] == 'I')
|
| 710 |
|
|
{
|
| 711 |
|
|
info->xfer_mode = TYPE_I;
|
| 712 |
|
|
rtems_ftpd_send_reply(200, "Type set to I.");
|
| 713 |
|
|
}
|
| 714 |
|
|
else if (bufr[5] == 'A')
|
| 715 |
|
|
{
|
| 716 |
|
|
info->xfer_mode = TYPE_A;
|
| 717 |
|
|
rtems_ftpd_send_reply(200, "Type set to A.");
|
| 718 |
|
|
}
|
| 719 |
|
|
else
|
| 720 |
|
|
{
|
| 721 |
|
|
info->xfer_mode = TYPE_I;
|
| 722 |
|
|
rtems_ftpd_send_reply(504, "Type not implemented. Set to I.");
|
| 723 |
|
|
}
|
| 724 |
|
|
}
|
| 725 |
|
|
else if (!strncmp("PASS", bufr, 4))
|
| 726 |
|
|
{
|
| 727 |
|
|
rtems_ftpd_send_reply(230, "User logged in.");
|
| 728 |
|
|
}
|
| 729 |
|
|
else if (!strncmp("DELE", bufr, 4))
|
| 730 |
|
|
{
|
| 731 |
|
|
sscanf(&bufr[4], "%254s", fname);
|
| 732 |
|
|
if (unlink(fname) == 0)
|
| 733 |
|
|
{
|
| 734 |
|
|
rtems_ftpd_send_reply(257, "DELE successful.");
|
| 735 |
|
|
}
|
| 736 |
|
|
else
|
| 737 |
|
|
{
|
| 738 |
|
|
rtems_ftpd_send_reply(550, "DELE failed.");
|
| 739 |
|
|
}
|
| 740 |
|
|
}
|
| 741 |
|
|
else if (!strncmp("SITE CHMOD", bufr, 10))
|
| 742 |
|
|
{
|
| 743 |
|
|
int mask;
|
| 744 |
|
|
|
| 745 |
|
|
sscanf(&bufr[11], "%o %254s", &mask, fname);
|
| 746 |
|
|
if (chmod(fname, (mode_t)mask) == 0)
|
| 747 |
|
|
{
|
| 748 |
|
|
rtems_ftpd_send_reply(257, "CHMOD successful.");
|
| 749 |
|
|
}
|
| 750 |
|
|
else
|
| 751 |
|
|
{
|
| 752 |
|
|
rtems_ftpd_send_reply(550, "CHMOD failed.");
|
| 753 |
|
|
}
|
| 754 |
|
|
}
|
| 755 |
|
|
else if (!strncmp("RMD", bufr, 3))
|
| 756 |
|
|
{
|
| 757 |
|
|
sscanf(&bufr[4], "%254s", fname);
|
| 758 |
|
|
if (rmdir(fname) == 0)
|
| 759 |
|
|
{
|
| 760 |
|
|
rtems_ftpd_send_reply(257, "RMD successful.");
|
| 761 |
|
|
}
|
| 762 |
|
|
else
|
| 763 |
|
|
{
|
| 764 |
|
|
rtems_ftpd_send_reply(550, "RMD failed.");
|
| 765 |
|
|
}
|
| 766 |
|
|
}
|
| 767 |
|
|
else if (!strncmp("MKD", bufr, 3))
|
| 768 |
|
|
{
|
| 769 |
|
|
sscanf(&bufr[4], "%254s", fname);
|
| 770 |
|
|
if (mkdir(fname, S_IRWXU | S_IRWXG | S_IRWXO) == 0)
|
| 771 |
|
|
{
|
| 772 |
|
|
rtems_ftpd_send_reply(257, "MKD successful.");
|
| 773 |
|
|
}
|
| 774 |
|
|
else
|
| 775 |
|
|
{
|
| 776 |
|
|
rtems_ftpd_send_reply(550, "MKD failed.");
|
| 777 |
|
|
}
|
| 778 |
|
|
}
|
| 779 |
|
|
else if (!strncmp("CWD", bufr, 3))
|
| 780 |
|
|
{
|
| 781 |
|
|
sscanf(&bufr[4], "%254s", fname);
|
| 782 |
|
|
rtems_ftpd_CWD(fname);
|
| 783 |
|
|
}
|
| 784 |
|
|
else if (!strncmp("PWD", bufr, 3))
|
| 785 |
|
|
{
|
| 786 |
|
|
char *cwd = getcwd(0, 0);
|
| 787 |
|
|
sprintf(bufr, "\"%s\" is the current directory.", cwd);
|
| 788 |
|
|
rtems_ftpd_send_reply(250, bufr);
|
| 789 |
|
|
free(cwd);
|
| 790 |
|
|
}
|
| 791 |
|
|
else
|
| 792 |
|
|
{
|
| 793 |
|
|
rtems_ftpd_send_reply(500, "Unrecognized/unsupported command.");
|
| 794 |
|
|
}
|
| 795 |
|
|
}
|
| 796 |
|
|
|
| 797 |
|
|
|
| 798 |
|
|
/**************************************************************************
|
| 799 |
|
|
* Function: rtems_ftpd_session *
|
| 800 |
|
|
**************************************************************************
|
| 801 |
|
|
* Description: *
|
| 802 |
|
|
* *
|
| 803 |
|
|
* This task is started when the FTP daemon gets a service request *
|
| 804 |
|
|
* from a remote machine. Here, we watch for commands that will *
|
| 805 |
|
|
* come through the "control" connection. These commands are then *
|
| 806 |
|
|
* parsed and executed until the connection is closed, either *
|
| 807 |
|
|
* unintentionally or intentionally with the "QUIT" command. *
|
| 808 |
|
|
* *
|
| 809 |
|
|
* *
|
| 810 |
|
|
* Inputs: *
|
| 811 |
|
|
* *
|
| 812 |
|
|
* rtems_task_argument arg - The daemon task passes the socket *
|
| 813 |
|
|
* which serves as the control connection. *
|
| 814 |
|
|
* *
|
| 815 |
|
|
* Output: *
|
| 816 |
|
|
* *
|
| 817 |
|
|
* none *
|
| 818 |
|
|
* *
|
| 819 |
|
|
**************************************************************************
|
| 820 |
|
|
* Change History: *
|
| 821 |
|
|
* 12/01/97 - Creation (JWJ) *
|
| 822 |
|
|
*************************************************************************/
|
| 823 |
|
|
static void
|
| 824 |
|
|
rtems_ftpd_session(rtems_task_argument arg)
|
| 825 |
|
|
{
|
| 826 |
|
|
char cmd[256];
|
| 827 |
|
|
rtems_status_code sc;
|
| 828 |
|
|
FTPD_SessionInfo_t *info = NULL;
|
| 829 |
|
|
|
| 830 |
|
|
|
| 831 |
|
|
sc = rtems_task_get_note(RTEMS_SELF, RTEMS_NOTEPAD_0,
|
| 832 |
|
|
(rtems_unsigned32 *)&info);
|
| 833 |
|
|
|
| 834 |
|
|
rtems_ftpd_send_reply(220, FTPD_SERVER_MESSAGE);
|
| 835 |
|
|
|
| 836 |
|
|
/***********************************************************************
|
| 837 |
|
|
* Set initial directory to "/".
|
| 838 |
|
|
**********************************************************************/
|
| 839 |
|
|
strcpy(info->cwd, "/");
|
| 840 |
|
|
info->xfer_mode = TYPE_A;
|
| 841 |
|
|
while (1)
|
| 842 |
|
|
{
|
| 843 |
|
|
if (fgets(cmd, 256, info->ctrl_fp) == NULL)
|
| 844 |
|
|
{
|
| 845 |
|
|
syslog(LOG_INFO, "ftpd: Connection aborted.");
|
| 846 |
|
|
break;
|
| 847 |
|
|
}
|
| 848 |
|
|
|
| 849 |
|
|
if (!strncmp("QUIT", cmd, 4))
|
| 850 |
|
|
{
|
| 851 |
|
|
rtems_ftpd_send_reply(221, "Goodbye.");
|
| 852 |
|
|
break;
|
| 853 |
|
|
}
|
| 854 |
|
|
else
|
| 855 |
|
|
{
|
| 856 |
|
|
rtems_ftpd_parse_command(cmd);
|
| 857 |
|
|
}
|
| 858 |
|
|
}
|
| 859 |
|
|
|
| 860 |
|
|
if (fclose(info->ctrl_fp) != 0)
|
| 861 |
|
|
{
|
| 862 |
|
|
syslog(LOG_ERR, "ftpd: Could not close session.");
|
| 863 |
|
|
}
|
| 864 |
|
|
|
| 865 |
|
|
|
| 866 |
|
|
/* Least we can do is put the CWD back to /. */
|
| 867 |
|
|
chdir("/");
|
| 868 |
|
|
|
| 869 |
|
|
/***********************************************************************
|
| 870 |
|
|
* Free up the allocated SessionInfo struct and exit.
|
| 871 |
|
|
**********************************************************************/
|
| 872 |
|
|
free(info);
|
| 873 |
|
|
sc = rtems_task_delete(RTEMS_SELF);
|
| 874 |
|
|
syslog(LOG_ERR, "ftpd: Task deletion failed: %s",
|
| 875 |
|
|
rtems_status_text(sc));
|
| 876 |
|
|
}
|
| 877 |
|
|
|
| 878 |
|
|
|
| 879 |
|
|
/**************************************************************************
|
| 880 |
|
|
* Function: rtems_ftpd_daemon *
|
| 881 |
|
|
**************************************************************************
|
| 882 |
|
|
* Description: *
|
| 883 |
|
|
* *
|
| 884 |
|
|
* This task runs in the background forever. It waits for service *
|
| 885 |
|
|
* requests on the FTP port (port 21). When a request is received, *
|
| 886 |
|
|
* it opens a new session to handle those requests until the *
|
| 887 |
|
|
* connection is closed. *
|
| 888 |
|
|
* *
|
| 889 |
|
|
* *
|
| 890 |
|
|
* Inputs: *
|
| 891 |
|
|
* *
|
| 892 |
|
|
* none *
|
| 893 |
|
|
* *
|
| 894 |
|
|
* Output: *
|
| 895 |
|
|
* *
|
| 896 |
|
|
* none *
|
| 897 |
|
|
* *
|
| 898 |
|
|
**************************************************************************
|
| 899 |
|
|
* Change History: *
|
| 900 |
|
|
* 12/01/97 - Creation (JWJ) *
|
| 901 |
|
|
*************************************************************************/
|
| 902 |
|
|
|
| 903 |
|
|
/* this is not prototyped in strict ansi mode */
|
| 904 |
|
|
|
| 905 |
|
|
FILE *fdopen (int fildes, const char *mode);
|
| 906 |
|
|
|
| 907 |
|
|
static void
|
| 908 |
|
|
rtems_ftpd_daemon()
|
| 909 |
|
|
{
|
| 910 |
|
|
int s;
|
| 911 |
|
|
int s1;
|
| 912 |
|
|
int addrLen;
|
| 913 |
|
|
struct sockaddr_in remoteAddr;
|
| 914 |
|
|
struct sockaddr_in localAddr;
|
| 915 |
|
|
char sessionID;
|
| 916 |
|
|
rtems_task_priority priority;
|
| 917 |
|
|
rtems_status_code sc;
|
| 918 |
|
|
rtems_id tid;
|
| 919 |
|
|
FTPD_SessionInfo_t *info = NULL;
|
| 920 |
|
|
|
| 921 |
|
|
|
| 922 |
|
|
sessionID = 'a';
|
| 923 |
|
|
|
| 924 |
|
|
s = socket(AF_INET, SOCK_STREAM, 0);
|
| 925 |
|
|
if (s < 0)
|
| 926 |
|
|
{
|
| 927 |
|
|
perror("Creating socket");
|
| 928 |
|
|
}
|
| 929 |
|
|
|
| 930 |
|
|
localAddr.sin_family = AF_INET;
|
| 931 |
|
|
localAddr.sin_port = htons(rtems_ftpd_configuration.port);
|
| 932 |
|
|
localAddr.sin_addr.s_addr = INADDR_ANY;
|
| 933 |
|
|
memset(localAddr.sin_zero, '\0', sizeof(localAddr.sin_zero));
|
| 934 |
|
|
if (bind(s, (struct sockaddr *)&localAddr,
|
| 935 |
|
|
sizeof(localAddr)) < 0)
|
| 936 |
|
|
{
|
| 937 |
|
|
perror("Binding control socket");
|
| 938 |
|
|
}
|
| 939 |
|
|
|
| 940 |
|
|
if (listen(s, 2) < 0)
|
| 941 |
|
|
{
|
| 942 |
|
|
perror("Listening on control socket");
|
| 943 |
|
|
}
|
| 944 |
|
|
|
| 945 |
|
|
while (1)
|
| 946 |
|
|
{
|
| 947 |
|
|
/********************************************************************
|
| 948 |
|
|
* Allocate a SessionInfo structure for the session task.
|
| 949 |
|
|
*******************************************************************/
|
| 950 |
|
|
info = (FTPD_SessionInfo_t *)malloc(sizeof(FTPD_SessionInfo_t));
|
| 951 |
|
|
if (info == NULL)
|
| 952 |
|
|
{
|
| 953 |
|
|
syslog(LOG_ERR, "ftpd: Could not allocate session info struct.");
|
| 954 |
|
|
rtems_panic("Malloc fail.");
|
| 955 |
|
|
}
|
| 956 |
|
|
|
| 957 |
|
|
/********************************************************************
|
| 958 |
|
|
* Accept on the socket and start the session task.
|
| 959 |
|
|
*******************************************************************/
|
| 960 |
|
|
addrLen = sizeof(remoteAddr);
|
| 961 |
|
|
s1 = accept(s, (struct sockaddr *)&remoteAddr, &addrLen);
|
| 962 |
|
|
if (s1 < 0)
|
| 963 |
|
|
{
|
| 964 |
|
|
perror("Accepting control connection");
|
| 965 |
|
|
}
|
| 966 |
|
|
|
| 967 |
|
|
rtems_task_set_priority(RTEMS_SELF, RTEMS_CURRENT_PRIORITY, &priority);
|
| 968 |
|
|
sc = rtems_task_create(rtems_build_name('F', 'T', 'P', sessionID),
|
| 969 |
|
|
priority, 8*1024,
|
| 970 |
|
|
RTEMS_PREEMPT | RTEMS_NO_TIMESLICE |
|
| 971 |
|
|
RTEMS_NO_ASR | RTEMS_INTERRUPT_LEVEL(0),
|
| 972 |
|
|
RTEMS_NO_FLOATING_POINT | RTEMS_LOCAL,
|
| 973 |
|
|
&tid);
|
| 974 |
|
|
if (sc != RTEMS_SUCCESSFUL)
|
| 975 |
|
|
{
|
| 976 |
|
|
syslog(LOG_ERR, "ftpd: Could not create FTPD session: %s",
|
| 977 |
|
|
rtems_status_text(sc));
|
| 978 |
|
|
}
|
| 979 |
|
|
|
| 980 |
|
|
if (sessionID == 'z')
|
| 981 |
|
|
{
|
| 982 |
|
|
sessionID = 'a';
|
| 983 |
|
|
}
|
| 984 |
|
|
else
|
| 985 |
|
|
{
|
| 986 |
|
|
sessionID++;
|
| 987 |
|
|
}
|
| 988 |
|
|
|
| 989 |
|
|
/********************************************************************
|
| 990 |
|
|
* Send the socket on to the new session.
|
| 991 |
|
|
*******************************************************************/
|
| 992 |
|
|
if ((info->ctrl_fp = fdopen(s1, "r+")) == NULL)
|
| 993 |
|
|
{
|
| 994 |
|
|
syslog(LOG_ERR, "ftpd: fdopen() on socket failed.");
|
| 995 |
|
|
close(s1);
|
| 996 |
|
|
}
|
| 997 |
|
|
else
|
| 998 |
|
|
{
|
| 999 |
|
|
sc = rtems_task_set_note(tid, RTEMS_NOTEPAD_0,
|
| 1000 |
|
|
(rtems_unsigned32)info);
|
| 1001 |
|
|
sc = rtems_task_start(tid, rtems_ftpd_session, 0);
|
| 1002 |
|
|
if (sc != RTEMS_SUCCESSFUL)
|
| 1003 |
|
|
{
|
| 1004 |
|
|
syslog(LOG_ERR, "ftpd: Could not start FTPD session: %s",
|
| 1005 |
|
|
rtems_status_text(sc));
|
| 1006 |
|
|
}
|
| 1007 |
|
|
}
|
| 1008 |
|
|
}
|
| 1009 |
|
|
}
|
| 1010 |
|
|
|
| 1011 |
|
|
|
| 1012 |
|
|
/**************************************************************************
|
| 1013 |
|
|
* Function: rtems_ftpd_start *
|
| 1014 |
|
|
**************************************************************************
|
| 1015 |
|
|
* Description: *
|
| 1016 |
|
|
* *
|
| 1017 |
|
|
* Here, we start the FTPD task which waits for FTP requests and *
|
| 1018 |
|
|
* services them. This procedure returns to its caller once the *
|
| 1019 |
|
|
* task is started. *
|
| 1020 |
|
|
* *
|
| 1021 |
|
|
* *
|
| 1022 |
|
|
* Inputs: *
|
| 1023 |
|
|
* *
|
| 1024 |
|
|
* rtems_task_priority priority - Priority to assign to this task. *
|
| 1025 |
|
|
* *
|
| 1026 |
|
|
* Output: *
|
| 1027 |
|
|
* *
|
| 1028 |
|
|
* int - RTEMS_SUCCESSFUL on successful start of the daemon. *
|
| 1029 |
|
|
* *
|
| 1030 |
|
|
**************************************************************************
|
| 1031 |
|
|
* Change History: *
|
| 1032 |
|
|
* 12/01/97 - Creation (JWJ) *
|
| 1033 |
|
|
*************************************************************************/
|
| 1034 |
|
|
int
|
| 1035 |
|
|
rtems_initialize_ftpd()
|
| 1036 |
|
|
{
|
| 1037 |
|
|
rtems_status_code sc;
|
| 1038 |
|
|
rtems_id tid;
|
| 1039 |
|
|
|
| 1040 |
|
|
|
| 1041 |
|
|
if (rtems_ftpd_configuration.port == 0)
|
| 1042 |
|
|
{
|
| 1043 |
|
|
rtems_ftpd_configuration.port = FTPD_CONTROL_PORT;
|
| 1044 |
|
|
}
|
| 1045 |
|
|
|
| 1046 |
|
|
/***********************************************************************
|
| 1047 |
|
|
* Default FTPD priority.
|
| 1048 |
|
|
**********************************************************************/
|
| 1049 |
|
|
if (rtems_ftpd_configuration.priority == 0)
|
| 1050 |
|
|
{
|
| 1051 |
|
|
rtems_ftpd_configuration.priority = 40;
|
| 1052 |
|
|
}
|
| 1053 |
|
|
sc = rtems_task_create(rtems_build_name('F', 'T', 'P', 'D'),
|
| 1054 |
|
|
rtems_ftpd_configuration.priority, 8*1024,
|
| 1055 |
|
|
RTEMS_PREEMPT | RTEMS_NO_TIMESLICE | RTEMS_NO_ASR |
|
| 1056 |
|
|
RTEMS_INTERRUPT_LEVEL(0),
|
| 1057 |
|
|
RTEMS_NO_FLOATING_POINT | RTEMS_LOCAL,
|
| 1058 |
|
|
&tid);
|
| 1059 |
|
|
if (sc != RTEMS_SUCCESSFUL)
|
| 1060 |
|
|
{
|
| 1061 |
|
|
syslog(LOG_ERR, "ftpd: Could not create FTP daemon: %s",
|
| 1062 |
|
|
rtems_status_text(sc));
|
| 1063 |
|
|
return(RTEMS_UNSATISFIED);
|
| 1064 |
|
|
}
|
| 1065 |
|
|
|
| 1066 |
|
|
sc = rtems_task_start(tid, rtems_ftpd_daemon, 0);
|
| 1067 |
|
|
if (sc != RTEMS_SUCCESSFUL)
|
| 1068 |
|
|
{
|
| 1069 |
|
|
syslog(LOG_ERR, "ftpd: Could not start FTP daemon: %s",
|
| 1070 |
|
|
rtems_status_text(sc));
|
| 1071 |
|
|
return(RTEMS_UNSATISFIED);
|
| 1072 |
|
|
}
|
| 1073 |
|
|
|
| 1074 |
|
|
syslog(LOG_INFO, "ftpd: FTP daemon started.");
|
| 1075 |
|
|
return(RTEMS_SUCCESSFUL);
|
| 1076 |
|
|
}
|
| 1077 |
|
|
|
