/*
- * Copyright (c) 2000 Markus Friedl. All rights reserved.
+ * Copyright (c) 2000, 2001, 2002 Markus Friedl. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "includes.h"
-RCSID("$OpenBSD: sftp-server.c,v 1.6 2000/09/07 20:27:53 deraadt Exp $");
+RCSID("$OpenBSD: sftp-server.c,v 1.36 2002/06/23 09:30:14 deraadt Exp $");
-#include "ssh.h"
#include "buffer.h"
#include "bufaux.h"
#include "getput.h"
+#include "log.h"
#include "xmalloc.h"
-/* version */
-#define SSH_FILEXFER_VERSION 2
-
-/* client to server */
-#define SSH_FXP_INIT 1
-#define SSH_FXP_OPEN 3
-#define SSH_FXP_CLOSE 4
-#define SSH_FXP_READ 5
-#define SSH_FXP_WRITE 6
-#define SSH_FXP_LSTAT 7
-#define SSH_FXP_FSTAT 8
-#define SSH_FXP_SETSTAT 9
-#define SSH_FXP_FSETSTAT 10
-#define SSH_FXP_OPENDIR 11
-#define SSH_FXP_READDIR 12
-#define SSH_FXP_REMOVE 13
-#define SSH_FXP_MKDIR 14
-#define SSH_FXP_RMDIR 15
-#define SSH_FXP_REALPATH 16
-#define SSH_FXP_STAT 17
-#define SSH_FXP_RENAME 18
-
-/* server to client */
-#define SSH_FXP_VERSION 2
-#define SSH_FXP_STATUS 101
-#define SSH_FXP_HANDLE 102
-#define SSH_FXP_DATA 103
-#define SSH_FXP_NAME 104
-#define SSH_FXP_ATTRS 105
-
-/* portable open modes */
-#define SSH_FXF_READ 0x01
-#define SSH_FXF_WRITE 0x02
-#define SSH_FXF_APPEND 0x04
-#define SSH_FXF_CREAT 0x08
-#define SSH_FXF_TRUNC 0x10
-#define SSH_FXF_EXCL 0x20
-
-/* attributes */
-#define SSH_FXA_HAVE_SIZE 0x01
-#define SSH_FXA_HAVE_UGID 0x02
-#define SSH_FXA_HAVE_PERM 0x04
-#define SSH_FXA_HAVE_TIME 0x08
-
-/* status messages */
-#define SSH_FX_OK 0x00
-#define SSH_FX_EOF 0x01
-#define SSH_FX_NO_SUCH_FILE 0x02
-#define SSH_FX_PERMISSION_DENIED 0x03
-#define SSH_FX_FAILURE 0x04
-#define SSH_FX_BAD_MESSAGE 0x05
-#define SSH_FX_NO_CONNECTION 0x06
-#define SSH_FX_CONNECTION_LOST 0x07
-
+#include "sftp.h"
+#include "sftp-common.h"
/* helper */
+#define get_int64() buffer_get_int64(&iqueue);
#define get_int() buffer_get_int(&iqueue);
#define get_string(lenp) buffer_get_string(&iqueue, lenp);
-#define TRACE log
+#define TRACE debug
+
+#ifdef HAVE___PROGNAME
+extern char *__progname;
+#else
+char *__progname;
+#endif
/* input and output queue */
Buffer iqueue;
Buffer oqueue;
+/* Version of client */
+int version;
+
/* portable attibutes, etc. */
-typedef struct Attrib Attrib;
typedef struct Stat Stat;
-struct Attrib
-{
- u_int32_t flags;
- u_int32_t size_high;
- u_int32_t size_low;
- u_int64_t size;
- u_int32_t uid;
- u_int32_t gid;
- u_int32_t perm;
- u_int32_t atime;
- u_int32_t mtime;
-};
-
-struct Stat
-{
+struct Stat {
char *name;
char *long_name;
Attrib attrib;
};
-int
+static int
errno_to_portable(int unixerrno)
{
int ret = 0;
+
switch (unixerrno) {
case 0:
- ret = SSH_FX_OK;
+ ret = SSH2_FX_OK;
break;
case ENOENT:
case ENOTDIR:
case EBADF:
case ELOOP:
- ret = SSH_FX_NO_SUCH_FILE;
+ ret = SSH2_FX_NO_SUCH_FILE;
break;
case EPERM:
case EACCES:
case EFAULT:
- ret = SSH_FX_PERMISSION_DENIED;
+ ret = SSH2_FX_PERMISSION_DENIED;
break;
case ENAMETOOLONG:
case EINVAL:
- ret = SSH_FX_BAD_MESSAGE;
+ ret = SSH2_FX_BAD_MESSAGE;
break;
default:
- ret = SSH_FX_FAILURE;
+ ret = SSH2_FX_FAILURE;
break;
}
return ret;
}
-int
+static int
flags_from_portable(int pflags)
{
int flags = 0;
- if (pflags & SSH_FXF_READ &&
- pflags & SSH_FXF_WRITE) {
+
+ if ((pflags & SSH2_FXF_READ) &&
+ (pflags & SSH2_FXF_WRITE)) {
flags = O_RDWR;
- } else if (pflags & SSH_FXF_READ) {
+ } else if (pflags & SSH2_FXF_READ) {
flags = O_RDONLY;
- } else if (pflags & SSH_FXF_WRITE) {
+ } else if (pflags & SSH2_FXF_WRITE) {
flags = O_WRONLY;
}
- if (pflags & SSH_FXF_CREAT)
+ if (pflags & SSH2_FXF_CREAT)
flags |= O_CREAT;
- if (pflags & SSH_FXF_TRUNC)
+ if (pflags & SSH2_FXF_TRUNC)
flags |= O_TRUNC;
- if (pflags & SSH_FXF_EXCL)
+ if (pflags & SSH2_FXF_EXCL)
flags |= O_EXCL;
return flags;
}
-void
-attrib_clear(Attrib *a)
-{
- a->flags = 0;
- a->size_low = 0;
- a->size_high = 0;
- a->size = 0;
- a->uid = 0;
- a->gid = 0;
- a->perm = 0;
- a->atime = 0;
- a->mtime = 0;
-}
-
-Attrib *
-decode_attrib(Buffer *b)
-{
- static Attrib a;
- attrib_clear(&a);
- a.flags = buffer_get_int(b);
- if (a.flags & SSH_FXA_HAVE_SIZE) {
- a.size_high = buffer_get_int(b);
- a.size_low = buffer_get_int(b);
- a.size = (((u_int64_t) a.size_high) << 32) + a.size_low;
- }
- if (a.flags & SSH_FXA_HAVE_UGID) {
- a.uid = buffer_get_int(b);
- a.gid = buffer_get_int(b);
- }
- if (a.flags & SSH_FXA_HAVE_PERM) {
- a.perm = buffer_get_int(b);
- }
- if (a.flags & SSH_FXA_HAVE_TIME) {
- a.atime = buffer_get_int(b);
- a.mtime = buffer_get_int(b);
- }
- return &a;
-}
-
-void
-encode_attrib(Buffer *b, Attrib *a)
-{
- buffer_put_int(b, a->flags);
- if (a->flags & SSH_FXA_HAVE_SIZE) {
- buffer_put_int(b, a->size_high);
- buffer_put_int(b, a->size_low);
- }
- if (a->flags & SSH_FXA_HAVE_UGID) {
- buffer_put_int(b, a->uid);
- buffer_put_int(b, a->gid);
- }
- if (a->flags & SSH_FXA_HAVE_PERM) {
- buffer_put_int(b, a->perm);
- }
- if (a->flags & SSH_FXA_HAVE_TIME) {
- buffer_put_int(b, a->atime);
- buffer_put_int(b, a->mtime);
- }
-}
-
-Attrib *
-stat_to_attrib(struct stat *st)
-{
- static Attrib a;
- attrib_clear(&a);
- a.flags = 0;
- a.flags |= SSH_FXA_HAVE_SIZE;
- a.size = st->st_size;
- a.size_low = a.size;
- a.size_high = (u_int32_t) (a.size >> 32);
- a.flags |= SSH_FXA_HAVE_UGID;
- a.uid = st->st_uid;
- a.gid = st->st_gid;
- a.flags |= SSH_FXA_HAVE_PERM;
- a.perm = st->st_mode;
- a.flags |= SSH_FXA_HAVE_TIME;
- a.atime = st->st_atime;
- a.mtime = st->st_mtime;
- return &a;
-}
-
-Attrib *
+static Attrib *
get_attrib(void)
{
return decode_attrib(&iqueue);
int fd;
char *name;
};
+
enum {
HANDLE_UNUSED,
HANDLE_DIR,
HANDLE_FILE
};
+
Handle handles[100];
-void
+static void
handle_init(void)
{
int i;
- for(i = 0; i < sizeof(handles)/sizeof(Handle); i++)
+
+ for (i = 0; i < sizeof(handles)/sizeof(Handle); i++)
handles[i].use = HANDLE_UNUSED;
}
-int
+static int
handle_new(int use, char *name, int fd, DIR *dirp)
{
int i;
- for(i = 0; i < sizeof(handles)/sizeof(Handle); i++) {
+
+ for (i = 0; i < sizeof(handles)/sizeof(Handle); i++) {
if (handles[i].use == HANDLE_UNUSED) {
handles[i].use = use;
handles[i].dirp = dirp;
return -1;
}
-int
+static int
handle_is_ok(int i, int type)
{
- return i >= 0 && i < sizeof(handles)/sizeof(Handle) && handles[i].use == type;
+ return i >= 0 && i < sizeof(handles)/sizeof(Handle) &&
+ handles[i].use == type;
}
-int
+static int
handle_to_string(int handle, char **stringp, int *hlenp)
{
- char buf[1024];
if (stringp == NULL || hlenp == NULL)
return -1;
- snprintf(buf, sizeof buf, "%d", handle);
- *stringp = xstrdup(buf);
- *hlenp = strlen(*stringp);
+ *stringp = xmalloc(sizeof(int32_t));
+ PUT_32BIT(*stringp, handle);
+ *hlenp = sizeof(int32_t);
return 0;
}
-int
+static int
handle_from_string(char *handle, u_int hlen)
{
-/* XXX OVERFLOW ? */
- char *ep;
- long lval = strtol(handle, &ep, 10);
- int val = lval;
- if (*ep != '\0')
+ int val;
+
+ if (hlen != sizeof(int32_t))
return -1;
+ val = GET_32BIT(handle);
if (handle_is_ok(val, HANDLE_FILE) ||
handle_is_ok(val, HANDLE_DIR))
return val;
return -1;
}
-char *
+static char *
handle_to_name(int handle)
{
if (handle_is_ok(handle, HANDLE_DIR)||
return NULL;
}
-DIR *
+static DIR *
handle_to_dir(int handle)
{
if (handle_is_ok(handle, HANDLE_DIR))
return NULL;
}
-int
+static int
handle_to_fd(int handle)
{
- if (handle_is_ok(handle, HANDLE_FILE))
+ if (handle_is_ok(handle, HANDLE_FILE))
return handles[handle].fd;
return -1;
}
-int
+static int
handle_close(int handle)
{
int ret = -1;
+
if (handle_is_ok(handle, HANDLE_FILE)) {
ret = close(handles[handle].fd);
handles[handle].use = HANDLE_UNUSED;
return ret;
}
-int
+static int
get_handle(void)
{
char *handle;
- int val;
+ int val = -1;
u_int hlen;
+
handle = get_string(&hlen);
- val = handle_from_string(handle, hlen);
+ if (hlen < 256)
+ val = handle_from_string(handle, hlen);
xfree(handle);
return val;
}
/* send replies */
-void
+static void
send_msg(Buffer *m)
{
int mlen = buffer_len(m);
+
buffer_put_int(&oqueue, mlen);
buffer_append(&oqueue, buffer_ptr(m), mlen);
buffer_consume(m, mlen);
}
-void
+static void
send_status(u_int32_t id, u_int32_t error)
{
Buffer msg;
- TRACE("sent status id %d error %d", id, error);
+ const char *status_messages[] = {
+ "Success", /* SSH_FX_OK */
+ "End of file", /* SSH_FX_EOF */
+ "No such file", /* SSH_FX_NO_SUCH_FILE */
+ "Permission denied", /* SSH_FX_PERMISSION_DENIED */
+ "Failure", /* SSH_FX_FAILURE */
+ "Bad message", /* SSH_FX_BAD_MESSAGE */
+ "No connection", /* SSH_FX_NO_CONNECTION */
+ "Connection lost", /* SSH_FX_CONNECTION_LOST */
+ "Operation unsupported", /* SSH_FX_OP_UNSUPPORTED */
+ "Unknown error" /* Others */
+ };
+
+ TRACE("sent status id %u error %u", id, error);
buffer_init(&msg);
- buffer_put_char(&msg, SSH_FXP_STATUS);
+ buffer_put_char(&msg, SSH2_FXP_STATUS);
buffer_put_int(&msg, id);
buffer_put_int(&msg, error);
+ if (version >= 3) {
+ buffer_put_cstring(&msg,
+ status_messages[MIN(error,SSH2_FX_MAX)]);
+ buffer_put_cstring(&msg, "");
+ }
send_msg(&msg);
buffer_free(&msg);
}
-void
+static void
send_data_or_handle(char type, u_int32_t id, char *data, int dlen)
{
Buffer msg;
+
buffer_init(&msg);
buffer_put_char(&msg, type);
buffer_put_int(&msg, id);
buffer_free(&msg);
}
-void
+static void
send_data(u_int32_t id, char *data, int dlen)
{
- TRACE("sent data id %d len %d", id, dlen);
- send_data_or_handle(SSH_FXP_DATA, id, data, dlen);
+ TRACE("sent data id %u len %d", id, dlen);
+ send_data_or_handle(SSH2_FXP_DATA, id, data, dlen);
}
-void
+static void
send_handle(u_int32_t id, int handle)
{
char *string;
int hlen;
+
handle_to_string(handle, &string, &hlen);
- TRACE("sent handle id %d handle %d", id, handle);
- send_data_or_handle(SSH_FXP_HANDLE, id, string, hlen);
+ TRACE("sent handle id %u handle %d", id, handle);
+ send_data_or_handle(SSH2_FXP_HANDLE, id, string, hlen);
xfree(string);
}
-void
+static void
send_names(u_int32_t id, int count, Stat *stats)
{
Buffer msg;
int i;
+
buffer_init(&msg);
- buffer_put_char(&msg, SSH_FXP_NAME);
+ buffer_put_char(&msg, SSH2_FXP_NAME);
buffer_put_int(&msg, id);
buffer_put_int(&msg, count);
- TRACE("sent names id %d count %d", id, count);
+ TRACE("sent names id %u count %d", id, count);
for (i = 0; i < count; i++) {
buffer_put_cstring(&msg, stats[i].name);
buffer_put_cstring(&msg, stats[i].long_name);
buffer_free(&msg);
}
-void
+static void
send_attrib(u_int32_t id, Attrib *a)
{
Buffer msg;
- TRACE("sent attrib id %d have 0x%x", id, a->flags);
+
+ TRACE("sent attrib id %u have 0x%x", id, a->flags);
buffer_init(&msg);
- buffer_put_char(&msg, SSH_FXP_ATTRS);
+ buffer_put_char(&msg, SSH2_FXP_ATTRS);
buffer_put_int(&msg, id);
encode_attrib(&msg, a);
send_msg(&msg);
/* parse incoming */
-void
+static void
process_init(void)
{
Buffer msg;
- int version = buffer_get_int(&iqueue);
+ version = get_int();
TRACE("client version %d", version);
buffer_init(&msg);
- buffer_put_char(&msg, SSH_FXP_VERSION);
- buffer_put_int(&msg, SSH_FILEXFER_VERSION);
+ buffer_put_char(&msg, SSH2_FXP_VERSION);
+ buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
send_msg(&msg);
buffer_free(&msg);
}
-void
+static void
process_open(void)
{
u_int32_t id, pflags;
Attrib *a;
char *name;
- int handle, fd, flags, mode, status = SSH_FX_FAILURE;
+ int handle, fd, flags, mode, status = SSH2_FX_FAILURE;
id = get_int();
name = get_string(NULL);
- pflags = get_int();
+ pflags = get_int(); /* portable flags */
a = get_attrib();
flags = flags_from_portable(pflags);
- mode = (a->flags & SSH_FXA_HAVE_PERM) ? a->perm : 0666;
- TRACE("open id %d name %s flags %d mode 0%o", id, name, pflags, mode);
+ mode = (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) ? a->perm : 0666;
+ TRACE("open id %u name %s flags %d mode 0%o", id, name, pflags, mode);
fd = open(name, flags, mode);
if (fd < 0) {
status = errno_to_portable(errno);
close(fd);
} else {
send_handle(id, handle);
- status = SSH_FX_OK;
+ status = SSH2_FX_OK;
}
}
- if (status != SSH_FX_OK)
+ if (status != SSH2_FX_OK)
send_status(id, status);
xfree(name);
}
-void
+static void
process_close(void)
{
u_int32_t id;
- int handle, ret, status = SSH_FX_FAILURE;
+ int handle, ret, status = SSH2_FX_FAILURE;
id = get_int();
handle = get_handle();
- TRACE("close id %d handle %d", id, handle);
+ TRACE("close id %u handle %d", id, handle);
ret = handle_close(handle);
- status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
+ status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK;
send_status(id, status);
}
-void
+static void
process_read(void)
{
char buf[64*1024];
- u_int32_t id, off_high, off_low, len;
- int handle, fd, ret, status = SSH_FX_FAILURE;
+ u_int32_t id, len;
+ int handle, fd, ret, status = SSH2_FX_FAILURE;
u_int64_t off;
id = get_int();
handle = get_handle();
- off_high = get_int();
- off_low = get_int();
+ off = get_int64();
len = get_int();
- off = (((u_int64_t) off_high) << 32) + off_low;
- TRACE("read id %d handle %d off %qd len %d", id, handle, off, len);
+ TRACE("read id %u handle %d off %llu len %d", id, handle,
+ (u_int64_t)off, len);
if (len > sizeof buf) {
len = sizeof buf;
log("read change len %d", len);
if (ret < 0) {
status = errno_to_portable(errno);
} else if (ret == 0) {
- status = SSH_FX_EOF;
+ status = SSH2_FX_EOF;
} else {
send_data(id, buf, ret);
- status = SSH_FX_OK;
+ status = SSH2_FX_OK;
}
}
}
- if (status != SSH_FX_OK)
+ if (status != SSH2_FX_OK)
send_status(id, status);
}
-void
+static void
process_write(void)
{
- u_int32_t id, off_high, off_low;
+ u_int32_t id;
u_int64_t off;
u_int len;
- int handle, fd, ret, status = SSH_FX_FAILURE;
+ int handle, fd, ret, status = SSH2_FX_FAILURE;
char *data;
id = get_int();
handle = get_handle();
- off_high = get_int();
- off_low = get_int();
+ off = get_int64();
data = get_string(&len);
- off = (((u_int64_t) off_high) << 32) + off_low;
- TRACE("write id %d handle %d off %qd len %d", id, handle, off, len);
+ TRACE("write id %u handle %d off %llu len %d", id, handle,
+ (u_int64_t)off, len);
fd = handle_to_fd(handle);
if (fd >= 0) {
if (lseek(fd, off, SEEK_SET) < 0) {
error("process_write: write failed");
status = errno_to_portable(errno);
} else if (ret == len) {
- status = SSH_FX_OK;
+ status = SSH2_FX_OK;
} else {
log("nothing at all written");
}
xfree(data);
}
-void
+static void
process_do_stat(int do_lstat)
{
- Attrib *a;
+ Attrib a;
struct stat st;
u_int32_t id;
char *name;
- int ret, status = SSH_FX_FAILURE;
+ int ret, status = SSH2_FX_FAILURE;
id = get_int();
name = get_string(NULL);
- TRACE("%sstat id %d name %s", do_lstat ? "l" : "", id, name);
+ TRACE("%sstat id %u name %s", do_lstat ? "l" : "", id, name);
ret = do_lstat ? lstat(name, &st) : stat(name, &st);
if (ret < 0) {
status = errno_to_portable(errno);
} else {
- a = stat_to_attrib(&st);
- send_attrib(id, a);
- status = SSH_FX_OK;
+ stat_to_attrib(&st, &a);
+ send_attrib(id, &a);
+ status = SSH2_FX_OK;
}
- if (status != SSH_FX_OK)
+ if (status != SSH2_FX_OK)
send_status(id, status);
xfree(name);
}
-void
+static void
process_stat(void)
{
process_do_stat(0);
}
-void
+static void
process_lstat(void)
{
process_do_stat(1);
}
-void
+static void
process_fstat(void)
{
- Attrib *a;
+ Attrib a;
struct stat st;
u_int32_t id;
- int fd, ret, handle, status = SSH_FX_FAILURE;
+ int fd, ret, handle, status = SSH2_FX_FAILURE;
id = get_int();
handle = get_handle();
- TRACE("fstat id %d handle %d", id, handle);
+ TRACE("fstat id %u handle %d", id, handle);
fd = handle_to_fd(handle);
if (fd >= 0) {
ret = fstat(fd, &st);
if (ret < 0) {
status = errno_to_portable(errno);
} else {
- a = stat_to_attrib(&st);
- send_attrib(id, a);
- status = SSH_FX_OK;
+ stat_to_attrib(&st, &a);
+ send_attrib(id, &a);
+ status = SSH2_FX_OK;
}
}
- if (status != SSH_FX_OK)
+ if (status != SSH2_FX_OK)
send_status(id, status);
}
-struct timeval *
+static struct timeval *
attrib_to_tv(Attrib *a)
{
static struct timeval tv[2];
+
tv[0].tv_sec = a->atime;
tv[0].tv_usec = 0;
tv[1].tv_sec = a->mtime;
return tv;
}
-void
+static void
process_setstat(void)
{
Attrib *a;
u_int32_t id;
char *name;
- int ret;
- int status = SSH_FX_OK;
+ int status = SSH2_FX_OK, ret;
id = get_int();
name = get_string(NULL);
a = get_attrib();
- TRACE("setstat id %d name %s", id, name);
- if (a->flags & SSH_FXA_HAVE_PERM) {
+ TRACE("setstat id %u name %s", id, name);
+ if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
+ ret = truncate(name, a->size);
+ if (ret == -1)
+ status = errno_to_portable(errno);
+ }
+ if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
ret = chmod(name, a->perm & 0777);
if (ret == -1)
status = errno_to_portable(errno);
}
- if (a->flags & SSH_FXA_HAVE_TIME) {
+ if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
ret = utimes(name, attrib_to_tv(a));
if (ret == -1)
status = errno_to_portable(errno);
}
+ if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
+ ret = chown(name, a->uid, a->gid);
+ if (ret == -1)
+ status = errno_to_portable(errno);
+ }
send_status(id, status);
xfree(name);
}
-void
+static void
process_fsetstat(void)
{
Attrib *a;
u_int32_t id;
int handle, fd, ret;
- int status = SSH_FX_OK;
+ int status = SSH2_FX_OK;
char *name;
-
+
id = get_int();
handle = get_handle();
a = get_attrib();
- TRACE("fsetstat id %d handle %d", id, handle);
+ TRACE("fsetstat id %u handle %d", id, handle);
fd = handle_to_fd(handle);
name = handle_to_name(handle);
- if ((fd < 0) || (name == NULL)) {
- status = SSH_FX_FAILURE;
+ if (fd < 0 || name == NULL) {
+ status = SSH2_FX_FAILURE;
} else {
- if (a->flags & SSH_FXA_HAVE_PERM) {
+ if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
+ ret = ftruncate(fd, a->size);
+ if (ret == -1)
+ status = errno_to_portable(errno);
+ }
+ if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
+#ifdef HAVE_FCHMOD
ret = fchmod(fd, a->perm & 0777);
+#else
+ ret = chmod(name, a->perm & 0777);
+#endif
if (ret == -1)
status = errno_to_portable(errno);
}
- if (a->flags & SSH_FXA_HAVE_TIME) {
+ if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
#ifdef HAVE_FUTIMES
ret = futimes(fd, attrib_to_tv(a));
#else
ret = utimes(name, attrib_to_tv(a));
+#endif
+ if (ret == -1)
+ status = errno_to_portable(errno);
+ }
+ if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
+#ifdef HAVE_FCHOWN
+ ret = fchown(fd, a->uid, a->gid);
+#else
+ ret = chown(name, a->uid, a->gid);
#endif
if (ret == -1)
status = errno_to_portable(errno);
send_status(id, status);
}
-void
+static void
process_opendir(void)
{
DIR *dirp = NULL;
char *path;
- int handle, status = SSH_FX_FAILURE;
+ int handle, status = SSH2_FX_FAILURE;
u_int32_t id;
id = get_int();
path = get_string(NULL);
- TRACE("opendir id %d path %s", id, path);
- dirp = opendir(path);
+ TRACE("opendir id %u path %s", id, path);
+ dirp = opendir(path);
if (dirp == NULL) {
status = errno_to_portable(errno);
} else {
closedir(dirp);
} else {
send_handle(id, handle);
- status = SSH_FX_OK;
+ status = SSH2_FX_OK;
}
-
+
}
- if (status != SSH_FX_OK)
+ if (status != SSH2_FX_OK)
send_status(id, status);
xfree(path);
}
-char *
+/*
+ * drwxr-xr-x 5 markus markus 1024 Jan 13 18:39 .ssh
+ */
+static char *
ls_file(char *name, struct stat *st)
{
- char buf[1024];
- snprintf(buf, sizeof buf, "0%o %d %d %qd %d %s",
- st->st_mode, st->st_uid, st->st_gid, (long long)st->st_size,(int) st->st_mtime,
- name);
+ int ulen, glen, sz = 0;
+ struct passwd *pw;
+ struct group *gr;
+ struct tm *ltime = localtime(&st->st_mtime);
+ char *user, *group;
+ char buf[1024], mode[11+1], tbuf[12+1], ubuf[11+1], gbuf[11+1];
+
+ strmode(st->st_mode, mode);
+ if ((pw = getpwuid(st->st_uid)) != NULL) {
+ user = pw->pw_name;
+ } else {
+ snprintf(ubuf, sizeof ubuf, "%u", st->st_uid);
+ user = ubuf;
+ }
+ if ((gr = getgrgid(st->st_gid)) != NULL) {
+ group = gr->gr_name;
+ } else {
+ snprintf(gbuf, sizeof gbuf, "%u", st->st_gid);
+ group = gbuf;
+ }
+ if (ltime != NULL) {
+ if (time(NULL) - st->st_mtime < (365*24*60*60)/2)
+ sz = strftime(tbuf, sizeof tbuf, "%b %e %H:%M", ltime);
+ else
+ sz = strftime(tbuf, sizeof tbuf, "%b %e %Y", ltime);
+ }
+ if (sz == 0)
+ tbuf[0] = '\0';
+ ulen = MAX(strlen(user), 8);
+ glen = MAX(strlen(group), 8);
+ snprintf(buf, sizeof buf, "%s %3d %-*s %-*s %8llu %s %s", mode,
+ st->st_nlink, ulen, user, glen, group,
+ (u_int64_t)st->st_size, tbuf, name);
return xstrdup(buf);
}
-void
+static void
process_readdir(void)
{
DIR *dirp;
id = get_int();
handle = get_handle();
- TRACE("readdir id %d handle %d", id, handle);
+ TRACE("readdir id %u handle %d", id, handle);
dirp = handle_to_dir(handle);
path = handle_to_name(handle);
if (dirp == NULL || path == NULL) {
- send_status(id, SSH_FX_FAILURE);
+ send_status(id, SSH2_FX_FAILURE);
} else {
- Attrib *a;
struct stat st;
char pathname[1024];
Stat *stats;
int nstats = 10, count = 0, i;
+
stats = xmalloc(nstats * sizeof(Stat));
while ((dp = readdir(dirp)) != NULL) {
if (count >= nstats) {
stats = xrealloc(stats, nstats * sizeof(Stat));
}
/* XXX OVERFLOW ? */
- snprintf(pathname, sizeof pathname,
- "%s/%s", path, dp->d_name);
+ snprintf(pathname, sizeof pathname, "%s%s%s", path,
+ strcmp(path, "/") ? "/" : "", dp->d_name);
if (lstat(pathname, &st) < 0)
continue;
- a = stat_to_attrib(&st);
- stats[count].attrib = *a;
+ stat_to_attrib(&st, &(stats[count].attrib));
stats[count].name = xstrdup(dp->d_name);
stats[count].long_name = ls_file(dp->d_name, &st);
count++;
/* send up to 100 entries in one message */
+ /* XXX check packet size instead */
if (count == 100)
break;
}
- send_names(id, count, stats);
- for(i = 0; i < count; i++) {
- xfree(stats[i].name);
- xfree(stats[i].long_name);
+ if (count > 0) {
+ send_names(id, count, stats);
+ for (i = 0; i < count; i++) {
+ xfree(stats[i].name);
+ xfree(stats[i].long_name);
+ }
+ } else {
+ send_status(id, SSH2_FX_EOF);
}
xfree(stats);
}
}
-void
+static void
process_remove(void)
{
char *name;
u_int32_t id;
- int status = SSH_FX_FAILURE;
+ int status = SSH2_FX_FAILURE;
int ret;
id = get_int();
name = get_string(NULL);
- TRACE("remove id %d name %s", id, name);
- ret = remove(name);
- status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
+ TRACE("remove id %u name %s", id, name);
+ ret = unlink(name);
+ status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK;
send_status(id, status);
xfree(name);
}
-void
+static void
process_mkdir(void)
{
Attrib *a;
u_int32_t id;
char *name;
- int ret, mode, status = SSH_FX_FAILURE;
+ int ret, mode, status = SSH2_FX_FAILURE;
id = get_int();
name = get_string(NULL);
a = get_attrib();
- mode = (a->flags & SSH_FXA_HAVE_PERM) ? a->perm & 0777 : 0777;
- TRACE("mkdir id %d name %s mode 0%o", id, name, mode);
+ mode = (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) ?
+ a->perm & 0777 : 0777;
+ TRACE("mkdir id %u name %s mode 0%o", id, name, mode);
ret = mkdir(name, mode);
- status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
+ status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK;
send_status(id, status);
xfree(name);
}
-void
+static void
process_rmdir(void)
{
u_int32_t id;
id = get_int();
name = get_string(NULL);
- TRACE("rmdir id %d name %s", id, name);
+ TRACE("rmdir id %u name %s", id, name);
ret = rmdir(name);
- status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
+ status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK;
send_status(id, status);
xfree(name);
}
-void
+static void
process_realpath(void)
{
char resolvedname[MAXPATHLEN];
id = get_int();
path = get_string(NULL);
- TRACE("realpath id %d path %s", id, path);
+ if (path[0] == '\0') {
+ xfree(path);
+ path = xstrdup(".");
+ }
+ TRACE("realpath id %u path %s", id, path);
if (realpath(path, resolvedname) == NULL) {
send_status(id, errno_to_portable(errno));
} else {
xfree(path);
}
-void
+static void
process_rename(void)
{
u_int32_t id;
+ struct stat st;
char *oldpath, *newpath;
- int ret, status;
+ int ret, status = SSH2_FX_FAILURE;
+
+ id = get_int();
+ oldpath = get_string(NULL);
+ newpath = get_string(NULL);
+ TRACE("rename id %u old %s new %s", id, oldpath, newpath);
+ /* fail if 'newpath' exists */
+ if (stat(newpath, &st) == -1) {
+ ret = rename(oldpath, newpath);
+ status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK;
+ }
+ send_status(id, status);
+ xfree(oldpath);
+ xfree(newpath);
+}
+
+static void
+process_readlink(void)
+{
+ u_int32_t id;
+ int len;
+ char link[MAXPATHLEN];
+ char *path;
+
+ id = get_int();
+ path = get_string(NULL);
+ TRACE("readlink id %u path %s", id, path);
+ if ((len = readlink(path, link, sizeof(link) - 1)) == -1)
+ send_status(id, errno_to_portable(errno));
+ else {
+ Stat s;
+
+ link[len] = '\0';
+ attrib_clear(&s.attrib);
+ s.name = s.long_name = link;
+ send_names(id, 1, &s);
+ }
+ xfree(path);
+}
+
+static void
+process_symlink(void)
+{
+ u_int32_t id;
+ struct stat st;
+ char *oldpath, *newpath;
+ int ret, status = SSH2_FX_FAILURE;
id = get_int();
oldpath = get_string(NULL);
newpath = get_string(NULL);
- TRACE("rename id %d old %s new %s", id, oldpath, newpath);
- ret = rename(oldpath, newpath);
- status = (ret == -1) ? errno_to_portable(errno) : SSH_FX_OK;
+ TRACE("symlink id %u old %s new %s", id, oldpath, newpath);
+ /* fail if 'newpath' exists */
+ if (stat(newpath, &st) == -1) {
+ ret = symlink(oldpath, newpath);
+ status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK;
+ }
send_status(id, status);
xfree(oldpath);
xfree(newpath);
}
+static void
+process_extended(void)
+{
+ u_int32_t id;
+ char *request;
+
+ id = get_int();
+ request = get_string(NULL);
+ send_status(id, SSH2_FX_OP_UNSUPPORTED); /* MUST */
+ xfree(request);
+}
/* stolen from ssh-agent */
-void
+static void
process(void)
{
- unsigned int msg_len;
- unsigned int type;
- unsigned char *cp;
-
- if (buffer_len(&iqueue) < 5)
+ u_int msg_len;
+ u_int buf_len;
+ u_int consumed;
+ u_int type;
+ u_char *cp;
+
+ buf_len = buffer_len(&iqueue);
+ if (buf_len < 5)
return; /* Incomplete message. */
- cp = (unsigned char *) buffer_ptr(&iqueue);
+ cp = buffer_ptr(&iqueue);
msg_len = GET_32BIT(cp);
if (msg_len > 256 * 1024) {
error("bad message ");
exit(11);
}
- if (buffer_len(&iqueue) < msg_len + 4)
+ if (buf_len < msg_len + 4)
return;
buffer_consume(&iqueue, 4);
+ buf_len -= 4;
type = buffer_get_char(&iqueue);
switch (type) {
- case SSH_FXP_INIT:
+ case SSH2_FXP_INIT:
process_init();
break;
- case SSH_FXP_OPEN:
+ case SSH2_FXP_OPEN:
process_open();
break;
- case SSH_FXP_CLOSE:
+ case SSH2_FXP_CLOSE:
process_close();
break;
- case SSH_FXP_READ:
+ case SSH2_FXP_READ:
process_read();
break;
- case SSH_FXP_WRITE:
+ case SSH2_FXP_WRITE:
process_write();
break;
- case SSH_FXP_LSTAT:
+ case SSH2_FXP_LSTAT:
process_lstat();
break;
- case SSH_FXP_FSTAT:
+ case SSH2_FXP_FSTAT:
process_fstat();
break;
- case SSH_FXP_SETSTAT:
+ case SSH2_FXP_SETSTAT:
process_setstat();
break;
- case SSH_FXP_FSETSTAT:
+ case SSH2_FXP_FSETSTAT:
process_fsetstat();
break;
- case SSH_FXP_OPENDIR:
+ case SSH2_FXP_OPENDIR:
process_opendir();
break;
- case SSH_FXP_READDIR:
+ case SSH2_FXP_READDIR:
process_readdir();
break;
- case SSH_FXP_REMOVE:
+ case SSH2_FXP_REMOVE:
process_remove();
break;
- case SSH_FXP_MKDIR:
+ case SSH2_FXP_MKDIR:
process_mkdir();
break;
- case SSH_FXP_RMDIR:
+ case SSH2_FXP_RMDIR:
process_rmdir();
break;
- case SSH_FXP_REALPATH:
+ case SSH2_FXP_REALPATH:
process_realpath();
break;
- case SSH_FXP_STAT:
+ case SSH2_FXP_STAT:
process_stat();
break;
- case SSH_FXP_RENAME:
+ case SSH2_FXP_RENAME:
process_rename();
break;
+ case SSH2_FXP_READLINK:
+ process_readlink();
+ break;
+ case SSH2_FXP_SYMLINK:
+ process_symlink();
+ break;
+ case SSH2_FXP_EXTENDED:
+ process_extended();
+ break;
default:
error("Unknown message %d", type);
break;
}
+ /* discard the remaining bytes from the current packet */
+ if (buf_len < buffer_len(&iqueue))
+ fatal("iqueue grows");
+ consumed = buf_len - buffer_len(&iqueue);
+ if (msg_len < consumed)
+ fatal("msg_len %d < consumed %d", msg_len, consumed);
+ if (msg_len > consumed)
+ buffer_consume(&iqueue, msg_len - consumed);
}
int
main(int ac, char **av)
{
- fd_set rset, wset;
+ fd_set *rset, *wset;
int in, out, max;
- ssize_t len, olen;
+ ssize_t len, olen, set_size;
+ /* XXX should use getopt */
+
+ __progname = get_progname(av[0]);
handle_init();
+#ifdef DEBUG_SFTP_SERVER
+ log_init("sftp-server", SYSLOG_LEVEL_DEBUG1, SYSLOG_FACILITY_AUTH, 0);
+#endif
+
in = dup(STDIN_FILENO);
out = dup(STDOUT_FILENO);
+#ifdef HAVE_CYGWIN
+ setmode(in, O_BINARY);
+ setmode(out, O_BINARY);
+#endif
+
max = 0;
if (in > max)
max = in;
buffer_init(&iqueue);
buffer_init(&oqueue);
+ set_size = howmany(max + 1, NFDBITS) * sizeof(fd_mask);
+ rset = (fd_set *)xmalloc(set_size);
+ wset = (fd_set *)xmalloc(set_size);
+
for (;;) {
- FD_ZERO(&rset);
- FD_ZERO(&wset);
+ memset(rset, 0, set_size);
+ memset(wset, 0, set_size);
- FD_SET(in, &rset);
+ FD_SET(in, rset);
olen = buffer_len(&oqueue);
if (olen > 0)
- FD_SET(out, &wset);
+ FD_SET(out, wset);
- if (select(max+1, &rset, &wset, NULL, NULL) < 0) {
+ if (select(max+1, rset, wset, NULL, NULL) < 0) {
if (errno == EINTR)
continue;
exit(2);
}
/* copy stdin to iqueue */
- if (FD_ISSET(in, &rset)) {
+ if (FD_ISSET(in, rset)) {
char buf[4*4096];
len = read(in, buf, sizeof buf);
if (len == 0) {
}
}
/* send oqueue to stdout */
- if (FD_ISSET(out, &wset)) {
+ if (FD_ISSET(out, wset)) {
len = write(out, buffer_ptr(&oqueue), olen);
if (len < 0) {
error("write error");
andersk / openssh.git / blobdiff