1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
#ifndef _LIBSSH2_SFTP_H
#define _LIBSSH2_SFTP_H
/*
* Copyright (C) 2010 - 2012 by Daniel Stenberg
* Author: Daniel Stenberg <daniel@haxx.se>
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
*/
/*
* MAX_SFTP_OUTGOING_SIZE MUST not be larger than 32500 or so. This is the
* amount of data sent in each FXP_WRITE packet
*/
#define MAX_SFTP_OUTGOING_SIZE 30000
/* MAX_SFTP_READ_SIZE is how much data is asked for at max in each FXP_READ
* packets.
*/
#define MAX_SFTP_READ_SIZE 30000
struct sftp_pipeline_chunk {
struct list_node node;
libssh2_uint64_t offset; /* READ: offset at which to start reading
WRITE: not used */
size_t len; /* WRITE: size of the data to write
READ: how many bytes that was asked for */
size_t sent;
ssize_t lefttosend; /* if 0, the entire packet has been sent off */
uint32_t request_id;
unsigned char packet[1]; /* data */
};
struct sftp_zombie_requests {
struct list_node node;
uint32_t request_id;
};
#ifndef MIN
#define MIN(x,y) ((x)<(y)?(x):(y))
#endif
struct _LIBSSH2_SFTP_PACKET
{
struct list_node node; /* linked list header */
uint32_t request_id;
unsigned char *data;
size_t data_len; /* payload size */
};
typedef struct _LIBSSH2_SFTP_PACKET LIBSSH2_SFTP_PACKET;
#define SFTP_HANDLE_MAXLEN 256 /* according to spec! */
struct _LIBSSH2_SFTP_HANDLE
{
struct list_node node;
LIBSSH2_SFTP *sftp;
char handle[SFTP_HANDLE_MAXLEN];
size_t handle_len;
enum {
LIBSSH2_SFTP_HANDLE_FILE,
LIBSSH2_SFTP_HANDLE_DIR
} handle_type;
union _libssh2_sftp_handle_data
{
struct _libssh2_sftp_handle_file_data
{
libssh2_uint64_t offset;
libssh2_uint64_t offset_sent;
size_t acked; /* container for acked data that hasn't been
returned to caller yet, used for sftp_write */
/* 'data' is used by sftp_read() and is allocated data that has
been received already from the server but wasn't returned to
the caller yet. It is of size 'data_len' and 'data_left is the
number of bytes not yet returned, counted from the end of the
buffer. */
unsigned char *data;
size_t data_len;
size_t data_left;
char eof; /* we have read to the end */
} file;
struct _libssh2_sftp_handle_dir_data
{
uint32_t names_left;
void *names_packet;
char *next_name;
size_t names_packet_len;
} dir;
} u;
/* State variables used in libssh2_sftp_close_handle() */
libssh2_nonblocking_states close_state;
uint32_t close_request_id;
unsigned char *close_packet;
/* list of outstanding packets sent to server */
struct list_head packet_list;
};
struct _LIBSSH2_SFTP
{
LIBSSH2_CHANNEL *channel;
uint32_t request_id, version;
struct list_head packets;
/* List of FXP_READ responses to ignore because EOF already received. */
struct list_head zombie_requests;
/* a list of _LIBSSH2_SFTP_HANDLE structs */
struct list_head sftp_handles;
uint32_t last_errno;
/* Holder for partial packet, use in libssh2_sftp_packet_read() */
unsigned char partial_size[4]; /* buffer for size field */
size_t partial_size_len; /* size field length */
unsigned char *partial_packet; /* The data */
uint32_t partial_len; /* Desired number of bytes */
size_t partial_received; /* Bytes received so far */
/* Time that libssh2_sftp_packet_requirev() started reading */
time_t requirev_start;
/* State variables used in libssh2_sftp_open_ex() */
libssh2_nonblocking_states open_state;
unsigned char *open_packet;
uint32_t open_packet_len; /* 32 bit on the wire */
size_t open_packet_sent;
uint32_t open_request_id;
/* State variable used in sftp_read() */
libssh2_nonblocking_states read_state;
/* State variable used in sftp_packet_read() */
libssh2_nonblocking_states packet_state;
/* State variable used in sftp_write() */
libssh2_nonblocking_states write_state;
/* State variables used in sftp_fsync() */
libssh2_nonblocking_states fsync_state;
unsigned char *fsync_packet;
uint32_t fsync_request_id;
/* State variables used in libssh2_sftp_readdir() */
libssh2_nonblocking_states readdir_state;
unsigned char *readdir_packet;
uint32_t readdir_request_id;
/* State variables used in libssh2_sftp_fstat_ex() */
libssh2_nonblocking_states fstat_state;
unsigned char *fstat_packet;
uint32_t fstat_request_id;
/* State variables used in libssh2_sftp_unlink_ex() */
libssh2_nonblocking_states unlink_state;
unsigned char *unlink_packet;
uint32_t unlink_request_id;
/* State variables used in libssh2_sftp_rename_ex() */
libssh2_nonblocking_states rename_state;
unsigned char *rename_packet;
unsigned char *rename_s;
uint32_t rename_request_id;
/* State variables used in libssh2_sftp_fstatvfs() */
libssh2_nonblocking_states fstatvfs_state;
unsigned char *fstatvfs_packet;
uint32_t fstatvfs_request_id;
/* State variables used in libssh2_sftp_statvfs() */
libssh2_nonblocking_states statvfs_state;
unsigned char *statvfs_packet;
uint32_t statvfs_request_id;
/* State variables used in libssh2_sftp_mkdir() */
libssh2_nonblocking_states mkdir_state;
unsigned char *mkdir_packet;
uint32_t mkdir_request_id;
/* State variables used in libssh2_sftp_rmdir() */
libssh2_nonblocking_states rmdir_state;
unsigned char *rmdir_packet;
uint32_t rmdir_request_id;
/* State variables used in libssh2_sftp_stat() */
libssh2_nonblocking_states stat_state;
unsigned char *stat_packet;
uint32_t stat_request_id;
/* State variables used in libssh2_sftp_symlink() */
libssh2_nonblocking_states symlink_state;
unsigned char *symlink_packet;
uint32_t symlink_request_id;
};
#endif
|
