git.distorted.org.uk Git - u/mdw/putty/blob - psftp.h

   1 /*
   2  * psftp.h: interface between psftp.c / scp.c and each
   3  * platform-specific SFTP module.
   4  */
   5
   6 #ifndef PUTTY_PSFTP_H
   7 #define PUTTY_PSFTP_H
   8
   9 /*
  10  * psftp_getcwd returns the local current directory. The returned
  11  * string must be freed by the caller.
  12  */
  13 char *psftp_getcwd(void);
  14
  15 /*
  16  * psftp_lcd changes the local current directory. The return value
  17  * is NULL on success, or else an error message which must be freed
  18  * by the caller.
  19  */
  20 char *psftp_lcd(char *newdir);
  21
  22 /*
  23  * Retrieve file times on a local file. Must return two unsigned
  24  * longs in POSIX time_t format.
  25  */
  26 void get_file_times(char *filename, unsigned long *mtime,
  27                     unsigned long *atime);
  28
  29 /*
  30  * One iteration of the PSFTP event loop: wait for network data and
  31  * process it, once.
  32  */
  33 int ssh_sftp_loop_iteration(void);
  34
  35 /*
  36  * Read a command line for PSFTP from standard input. Caller must
  37  * free.
  38  */
  39 char *ssh_sftp_get_cmdline(char *prompt);
  40
  41 /*
  42  * The main program in psftp.c. Called from main() in the platform-
  43  * specific code, after doing any platform-specific initialisation.
  44  */
  45 int psftp_main(int argc, char *argv[]);
  46
  47 /*
  48  * These functions are used by PSCP to transmit progress updates
  49  * and error information to a GUI window managing it. This will
  50  * probably only ever be supported on Windows, so these functions
  51  * can safely be stubs on all other platforms.
  52  */
  53 void gui_update_stats(char *name, unsigned long size,
  54                       int percentage, unsigned long elapsed,
  55                       unsigned long done, unsigned long eta,
  56                       unsigned long ratebs);
  57 void gui_send_errcount(int list, int errs);
  58 void gui_send_char(int is_stderr, int c);
  59 void gui_enable(char *arg);
  60
  61 /*
  62  * It's likely that a given platform's implementation of file
  63  * transfer utilities is going to want to do things with them that
  64  * aren't present in stdio. Hence we supply an alternative
  65  * abstraction for file access functions.
  66  *
  67  * This abstraction tells you the size and access times when you
  68  * open an existing file (platforms may choose the meaning of the
  69  * file times if it's not clear; whatever they choose will be what
  70  * PSCP sends to the server as mtime and atime), and lets you set
  71  * the times when saving a new file.
  72  *
  73  * On the other hand, the abstraction is pretty simple: it supports
  74  * only opening a file and reading it, or creating a file and
  75  * writing it. (FIXME: to use this in PSFTP it will also need to
  76  * support seeking to a starting point for restarted transfers.)
  77  * None of this read-and-write, seeking-back-and-forth stuff.
  78  */
  79 typedef struct RFile RFile;
  80 typedef struct WFile WFile;
  81 /* Output params size, mtime and atime can all be NULL if desired */
  82 RFile *open_existing_file(char *name, unsigned long *size,
  83                           unsigned long *mtime, unsigned long *atime);
  84 /* Returns <0 on error, 0 on eof, or number of bytes read, as usual */
  85 int read_from_file(RFile *f, void *buffer, int length);
  86 /* Closes and frees the RFile */
  87 void close_rfile(RFile *f);
  88 WFile *open_new_file(char *name);
  89 /* Returns <0 on error, 0 on eof, or number of bytes written, as usual */
  90 int write_to_file(WFile *f, void *buffer, int length);
  91 void set_file_times(WFile *f, unsigned long mtime, unsigned long atime);
  92 /* Closes and frees the WFile */
  93 void close_wfile(WFile *f);
  94
  95 /*
  96  * Determine the type of a file: nonexistent, file, directory or
  97  * weird. `weird' covers anything else - named pipes, Unix sockets,
  98  * device files, fish, badgers, you name it. Things marked `weird'
  99  * will be skipped over in recursive file transfers, so the only
 100  * real reason for not lumping them in with `nonexistent' is that
 101  * it allows a slightly more sane error message.
 102  */
 103 enum {
 104     FILE_TYPE_NONEXISTENT, FILE_TYPE_FILE, FILE_TYPE_DIRECTORY, FILE_TYPE_WEIRD
 105 };
 106 int file_type(char *name);
 107
 108 /*
 109  * Read all the file names out of a directory.
 110  */
 111 typedef struct DirHandle DirHandle;
 112 DirHandle *open_directory(char *name);
 113 /* The string returned from this will need freeing if not NULL */
 114 char *read_filename(DirHandle *dir);
 115 void close_directory(DirHandle *dir);
 116
 117 /*
 118  * Test a filespec to see whether it's a local wildcard or not.
 119  * Return values:
 120  *
 121  *  - WCTYPE_WILDCARD (this is a wildcard).
 122  *  - WCTYPE_FILENAME (this is a single file name).
 123  *  - WCTYPE_NONEXISTENT (whichever it was, nothing of that name exists).
 124  *
 125  * Some platforms may choose not to support local wildcards when
 126  * they come from the command line; in this case they simply never
 127  * return WCTYPE_WILDCARD, but still test the file's existence.
 128  * (However, all platforms will probably want to support wildcards
 129  * inside the PSFTP CLI.)
 130  */
 131 enum {
 132     WCTYPE_NONEXISTENT, WCTYPE_FILENAME, WCTYPE_WILDCARD
 133 };
 134 int test_wildcard(char *name, int cmdline);
 135
 136 /*
 137  * Actually return matching file names for a local wildcard.
 138  */
 139 typedef struct WildcardMatcher WildcardMatcher;
 140 WildcardMatcher *begin_wildcard_matching(char *name);
 141 /* The string returned from this will need freeing if not NULL */
 142 char *wildcard_get_filename(WildcardMatcher *dir);
 143 void finish_wildcard_matching(WildcardMatcher *dir);
 144
 145 /*
 146  * Create a directory. Returns 0 on error, !=0 on success.
 147  */
 148 int create_directory(char *name);
 149
 150 /*
 151  * Concatenate a directory name and a file name. The way this is
 152  * done will depend on the OS.
 153  */
 154 char *dir_file_cat(char *dir, char *file);
 155
 156 #endif /* PUTTY_PSFTP_H */