1 /* $OpenBSD: sftp-client.h,v 1.38 2022/09/19 10:43:12 djm Exp $ */ 2 3 /* 4 * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /* Client side of SSH2 filexfer protocol */ 20 21 #ifndef _SFTP_CLIENT_H 22 #define _SFTP_CLIENT_H 23 24 #ifdef USE_SYSTEM_GLOB 25 # include <glob.h> 26 #else 27 # include "openbsd-compat/glob.h" 28 #endif 29 30 typedef struct SFTP_DIRENT SFTP_DIRENT; 31 32 struct SFTP_DIRENT { 33 char *filename; 34 char *longname; 35 Attrib a; 36 }; 37 38 /* 39 * Used for statvfs responses on the wire from the server, because the 40 * server's native format may be larger than the client's. 41 */ 42 struct sftp_statvfs { 43 u_int64_t f_bsize; 44 u_int64_t f_frsize; 45 u_int64_t f_blocks; 46 u_int64_t f_bfree; 47 u_int64_t f_bavail; 48 u_int64_t f_files; 49 u_int64_t f_ffree; 50 u_int64_t f_favail; 51 u_int64_t f_fsid; 52 u_int64_t f_flag; 53 u_int64_t f_namemax; 54 }; 55 56 /* Used for limits response on the wire from the server */ 57 struct sftp_limits { 58 u_int64_t packet_length; 59 u_int64_t read_length; 60 u_int64_t write_length; 61 u_int64_t open_handles; 62 }; 63 64 /* print flag values */ 65 #define SFTP_QUIET 0 /* be quiet during transfers */ 66 #define SFTP_PRINT 1 /* list files and show progress bar */ 67 #define SFTP_PROGRESS_ONLY 2 /* progress bar only */ 68 69 /* 70 * Initialise a SSH filexfer connection. Returns NULL on error or 71 * a pointer to a initialized sftp_conn struct on success. 72 */ 73 struct sftp_conn *do_init(int, int, u_int, u_int, u_int64_t); 74 75 u_int sftp_proto_version(struct sftp_conn *); 76 77 /* Query server limits */ 78 int do_limits(struct sftp_conn *, struct sftp_limits *); 79 80 /* Close file referred to by 'handle' */ 81 int do_close(struct sftp_conn *, const u_char *, u_int); 82 83 /* Read contents of 'path' to NULL-terminated array 'dir' */ 84 int do_readdir(struct sftp_conn *, const char *, SFTP_DIRENT ***); 85 86 /* Frees a NULL-terminated array of SFTP_DIRENTs (eg. from do_readdir) */ 87 void free_sftp_dirents(SFTP_DIRENT **); 88 89 /* Delete file 'path' */ 90 int do_rm(struct sftp_conn *, const char *); 91 92 /* Create directory 'path' */ 93 int do_mkdir(struct sftp_conn *, const char *, Attrib *, int); 94 95 /* Remove directory 'path' */ 96 int do_rmdir(struct sftp_conn *, const char *); 97 98 /* Get file attributes of 'path' (follows symlinks) */ 99 Attrib *do_stat(struct sftp_conn *, const char *, int); 100 101 /* Get file attributes of 'path' (does not follow symlinks) */ 102 Attrib *do_lstat(struct sftp_conn *, const char *, int); 103 104 /* Set file attributes of 'path' */ 105 int do_setstat(struct sftp_conn *, const char *, Attrib *); 106 107 /* Set file attributes of open file 'handle' */ 108 int do_fsetstat(struct sftp_conn *, const u_char *, u_int, Attrib *); 109 110 /* Set file attributes of 'path', not following symlinks */ 111 int do_lsetstat(struct sftp_conn *conn, const char *path, Attrib *a); 112 113 /* Canonicalise 'path' - caller must free result */ 114 char *do_realpath(struct sftp_conn *, const char *); 115 116 /* Canonicalisation with tilde expansion (requires server extension) */ 117 char *do_expand_path(struct sftp_conn *, const char *); 118 119 /* Returns non-zero if server can tilde-expand paths */ 120 int can_expand_path(struct sftp_conn *); 121 122 /* Get statistics for filesystem hosting file at "path" */ 123 int do_statvfs(struct sftp_conn *, const char *, struct sftp_statvfs *, int); 124 125 /* Rename 'oldpath' to 'newpath' */ 126 int do_rename(struct sftp_conn *, const char *, const char *, int); 127 128 /* Copy 'oldpath' to 'newpath' */ 129 int do_copy(struct sftp_conn *, const char *, const char *); 130 131 /* Link 'oldpath' to 'newpath' */ 132 int do_hardlink(struct sftp_conn *, const char *, const char *); 133 134 /* Rename 'oldpath' to 'newpath' */ 135 int do_symlink(struct sftp_conn *, const char *, const char *); 136 137 /* Call fsync() on open file 'handle' */ 138 int do_fsync(struct sftp_conn *conn, u_char *, u_int); 139 140 /* 141 * Download 'remote_path' to 'local_path'. Preserve permissions and times 142 * if 'pflag' is set 143 */ 144 int do_download(struct sftp_conn *, const char *, const char *, Attrib *, 145 int, int, int, int); 146 147 /* 148 * Recursively download 'remote_directory' to 'local_directory'. Preserve 149 * times if 'pflag' is set 150 */ 151 int download_dir(struct sftp_conn *, const char *, const char *, Attrib *, 152 int, int, int, int, int, int); 153 154 /* 155 * Upload 'local_path' to 'remote_path'. Preserve permissions and times 156 * if 'pflag' is set 157 */ 158 int do_upload(struct sftp_conn *, const char *, const char *, 159 int, int, int, int); 160 161 /* 162 * Recursively upload 'local_directory' to 'remote_directory'. Preserve 163 * times if 'pflag' is set 164 */ 165 int upload_dir(struct sftp_conn *, const char *, const char *, 166 int, int, int, int, int, int); 167 168 /* 169 * Download a 'from_path' from the 'from' connection and upload it to 170 * to 'to' connection at 'to_path'. 171 */ 172 int 173 do_crossload(struct sftp_conn *from, struct sftp_conn *to, 174 const char *from_path, const char *to_path, 175 Attrib *a, int preserve_flag); 176 177 /* 178 * Recursively download a directory from 'from_path' from the 'from' 179 * connection and upload it to 'to' connection at 'to_path'. 180 */ 181 int crossload_dir(struct sftp_conn *from, struct sftp_conn *to, 182 const char *from_path, const char *to_path, 183 Attrib *dirattrib, int preserve_flag, int print_flag, 184 int follow_link_flag); 185 186 /* 187 * User/group ID to name translation. 188 */ 189 int can_get_users_groups_by_id(struct sftp_conn *conn); 190 int do_get_users_groups_by_id(struct sftp_conn *conn, 191 const u_int *uids, u_int nuids, 192 const u_int *gids, u_int ngids, 193 char ***usernamesp, char ***groupnamesp); 194 195 /* Concatenate paths, taking care of slashes. Caller must free result. */ 196 char *path_append(const char *, const char *); 197 198 /* Make absolute path if relative path and CWD is given. Does not modify 199 * original if the path is already absolute. */ 200 char *make_absolute(char *, const char *); 201 202 /* Check if remote path is directory */ 203 int remote_is_dir(struct sftp_conn *conn, const char *path); 204 205 /* Check if local path is directory */ 206 int local_is_dir(const char *path); 207 208 /* Check whether path returned from glob(..., GLOB_MARK, ...) is a directory */ 209 int globpath_is_dir(const char *pathname); 210 211 #endif 212