#include <stdio.h>
#include <stdlib.h>
+#include <stdarg.h>
#include <assert.h>
-#include <unistd.h>
+#include <limits.h>
+#define PUTTY_DO_GLOBALS
+#include "putty.h"
+#include "psftp.h"
+#include "storage.h"
+#include "ssh.h"
#include "sftp.h"
#include "int64.h"
-#define smalloc malloc
-#define srealloc realloc
-#define sfree free
-
-/* ----------------------------------------------------------------------
- * String handling routines.
+/*
+ * Since SFTP is a request-response oriented protocol, it requires
+ * no buffer management: when we send data, we stop and wait for an
+ * acknowledgement _anyway_, and so we can't possibly overfill our
+ * send buffer.
*/
-char *dupstr(char *s) {
- int len = strlen(s);
- char *p = smalloc(len+1);
- strcpy(p, s);
- return p;
-}
+static int psftp_connect(char *userhost, char *user, int portnumber);
+static int do_sftp_init(void);
/* ----------------------------------------------------------------------
* sftp client state.
*/
char *pwd, *homedir;
+static Backend *back;
+static void *backhandle;
+static Config cfg;
/* ----------------------------------------------------------------------
* Higher-level helper functions used in commands.
*/
/*
- * Canonify a pathname starting from the pwd.
+ * Attempt to canonify a pathname starting from the pwd. If
+ * canonification fails, at least fall back to returning a _valid_
+ * pathname (though it may be ugly, eg /home/simon/../foobar).
*/
-char *canonify(char *name) {
- if (name[0] == '/')
- return fxp_realpath(name, NULL);
- else
- return fxp_realpath(pwd, name);
+char *canonify(char *name)
+{
+ char *fullname, *canonname;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
+
+ if (name[0] == '/') {
+ fullname = dupstr(name);
+ } else {
+ char *slash;
+ if (pwd[strlen(pwd) - 1] == '/')
+ slash = "";
+ else
+ slash = "/";
+ fullname = dupcat(pwd, slash, name, NULL);
+ }
+
+ sftp_register(req = fxp_realpath_send(fullname));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ canonname = fxp_realpath_recv(pktin, rreq);
+
+ if (canonname) {
+ sfree(fullname);
+ return canonname;
+ } else {
+ /*
+ * Attempt number 2. Some FXP_REALPATH implementations
+ * (glibc-based ones, in particular) require the _whole_
+ * path to point to something that exists, whereas others
+ * (BSD-based) only require all but the last component to
+ * exist. So if the first call failed, we should strip off
+ * everything from the last slash onwards and try again,
+ * then put the final component back on.
+ *
+ * Special cases:
+ *
+ * - if the last component is "/." or "/..", then we don't
+ * bother trying this because there's no way it can work.
+ *
+ * - if the thing actually ends with a "/", we remove it
+ * before we start. Except if the string is "/" itself
+ * (although I can't see why we'd have got here if so,
+ * because surely "/" would have worked the first
+ * time?), in which case we don't bother.
+ *
+ * - if there's no slash in the string at all, give up in
+ * confusion (we expect at least one because of the way
+ * we constructed the string).
+ */
+
+ int i;
+ char *returnname;
+
+ i = strlen(fullname);
+ if (i > 2 && fullname[i - 1] == '/')
+ fullname[--i] = '\0'; /* strip trailing / unless at pos 0 */
+ while (i > 0 && fullname[--i] != '/');
+
+ /*
+ * Give up on special cases.
+ */
+ if (fullname[i] != '/' || /* no slash at all */
+ !strcmp(fullname + i, "/.") || /* ends in /. */
+ !strcmp(fullname + i, "/..") || /* ends in /.. */
+ !strcmp(fullname, "/")) {
+ return fullname;
+ }
+
+ /*
+ * Now i points at the slash. Deal with the final special
+ * case i==0 (ie the whole path was "/nonexistentfile").
+ */
+ fullname[i] = '\0'; /* separate the string */
+ if (i == 0) {
+ sftp_register(req = fxp_realpath_send("/"));
+ } else {
+ sftp_register(req = fxp_realpath_send(fullname));
+ }
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ canonname = fxp_realpath_recv(pktin, rreq);
+
+ if (!canonname)
+ return fullname; /* even that failed; give up */
+
+ /*
+ * We have a canonical name for all but the last path
+ * component. Concatenate the last component and return.
+ */
+ returnname = dupcat(canonname,
+ canonname[strlen(canonname) - 1] ==
+ '/' ? "" : "/", fullname + i + 1, NULL);
+ sfree(fullname);
+ sfree(canonname);
+ return returnname;
+ }
+}
+
+/*
+ * Return a pointer to the portion of str that comes after the last
+ * slash (or backslash or colon, if `local' is TRUE).
+ */
+static char *stripslashes(char *str, int local)
+{
+ char *p;
+
+ if (local) {
+ p = strchr(str, ':');
+ if (p) str = p+1;
+ }
+
+ p = strrchr(str, '/');
+ if (p) str = p+1;
+
+ if (local) {
+ p = strrchr(str, '\\');
+ if (p) str = p+1;
+ }
+
+ return str;
}
/* ----------------------------------------------------------------------
struct sftp_command {
char **words;
int nwords, wordssize;
- int (*obey)(struct sftp_command *);/* returns <0 to quit */
+ int (*obey) (struct sftp_command *); /* returns <0 to quit */
};
-int sftp_cmd_null(struct sftp_command *cmd) {
- return 0;
+int sftp_cmd_null(struct sftp_command *cmd)
+{
+ return 1; /* success */
}
-int sftp_cmd_unknown(struct sftp_command *cmd) {
+int sftp_cmd_unknown(struct sftp_command *cmd)
+{
printf("psftp: unknown command \"%s\"\n", cmd->words[0]);
- return 0;
+ return 0; /* failure */
}
-int sftp_cmd_quit(struct sftp_command *cmd) {
+int sftp_cmd_quit(struct sftp_command *cmd)
+{
return -1;
}
* List a directory. If no arguments are given, list pwd; otherwise
* list the directory given in words[1].
*/
-static int sftp_ls_compare(const void *av, const void *bv) {
- const struct fxp_name *a = (const struct fxp_name *)av;
- const struct fxp_name *b = (const struct fxp_name *)bv;
- return strcmp(a->filename, b->filename);
+static int sftp_ls_compare(const void *av, const void *bv)
+{
+ const struct fxp_name *const *a = (const struct fxp_name *const *) av;
+ const struct fxp_name *const *b = (const struct fxp_name *const *) bv;
+ return strcmp((*a)->filename, (*b)->filename);
}
-int sftp_cmd_ls(struct sftp_command *cmd) {
+int sftp_cmd_ls(struct sftp_command *cmd)
+{
struct fxp_handle *dirh;
struct fxp_names *names;
- struct fxp_name *ournames;
+ struct fxp_name **ournames;
int nnames, namesize;
char *dir, *cdir;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
int i;
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
+
if (cmd->nwords < 2)
dir = ".";
else
printf("Listing directory %s\n", cdir);
- dirh = fxp_opendir(cdir);
+ sftp_register(req = fxp_opendir_send(cdir));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ dirh = fxp_opendir_recv(pktin, rreq);
+
if (dirh == NULL) {
printf("Unable to open %s: %s\n", dir, fxp_error());
} else {
while (1) {
- names = fxp_readdir(dirh);
+ sftp_register(req = fxp_readdir_send(dirh));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ names = fxp_readdir_recv(pktin, rreq);
+
if (names == NULL) {
if (fxp_error_type() == SSH_FX_EOF)
break;
if (nnames + names->nnames >= namesize) {
namesize += names->nnames + 128;
- ournames = srealloc(ournames, namesize * sizeof(*ournames));
+ ournames = sresize(ournames, namesize, struct fxp_name *);
}
for (i = 0; i < names->nnames; i++)
- ournames[nnames++] = names->names[i];
+ ournames[nnames++] = fxp_dup_name(&names->names[i]);
- names->nnames = 0; /* prevent free_names */
fxp_free_names(names);
}
- fxp_close(dirh);
+ sftp_register(req = fxp_close_send(dirh));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ fxp_close_recv(pktin, rreq);
/*
* Now we have our filenames. Sort them by actual file
/*
* And print them.
*/
- for (i = 0; i < nnames; i++)
- printf("%s\n", ournames[i].longname);
+ for (i = 0; i < nnames; i++) {
+ printf("%s\n", ournames[i]->longname);
+ fxp_free_name(ournames[i]);
+ }
+ sfree(ournames);
}
sfree(cdir);
- return 0;
+ return 1;
}
/*
* Change directories. We do this by canonifying the new name, then
* trying to OPENDIR it. Only if that succeeds do we set the new pwd.
*/
-int sftp_cmd_cd(struct sftp_command *cmd) {
+int sftp_cmd_cd(struct sftp_command *cmd)
+{
struct fxp_handle *dirh;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
char *dir;
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
+
if (cmd->nwords < 2)
- dir = fxp_realpath(".", NULL);
+ dir = dupstr(homedir);
else
dir = canonify(cmd->words[1]);
return 0;
}
- dirh = fxp_opendir(dir);
+ sftp_register(req = fxp_opendir_send(dir));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ dirh = fxp_opendir_recv(pktin, rreq);
+
if (!dirh) {
printf("Directory %s: %s\n", dir, fxp_error());
sfree(dir);
return 0;
}
- fxp_close(dirh);
+ sftp_register(req = fxp_close_send(dirh));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ fxp_close_recv(pktin, rreq);
sfree(pwd);
pwd = dir;
printf("Remote directory is now %s\n", pwd);
- return 0;
+ return 1;
}
/*
- * Get a file and save it at the local end.
+ * Print current directory. Easy as pie.
*/
-int sftp_cmd_get(struct sftp_command *cmd) {
+int sftp_cmd_pwd(struct sftp_command *cmd)
+{
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
+
+ printf("Remote directory is %s\n", pwd);
+ return 1;
+}
+
+/*
+ * Get a file and save it at the local end. We have two very
+ * similar commands here: `get' and `reget', which differ in that
+ * `reget' checks for the existence of the destination file and
+ * starts from where a previous aborted transfer left off.
+ */
+int sftp_general_get(struct sftp_command *cmd, int restart)
+{
struct fxp_handle *fh;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
char *fname, *outfname;
uint64 offset;
FILE *fp;
+ int ret;
+
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
if (cmd->nwords < 2) {
printf("get: expects a filename\n");
printf("%s: %s\n", cmd->words[1], fxp_error());
return 0;
}
- outfname = (cmd->nwords == 2 ? cmd->words[1] : cmd->words[2]);
+ outfname = (cmd->nwords == 2 ?
+ stripslashes(cmd->words[1], 0) : cmd->words[2]);
+
+ sftp_register(req = fxp_open_send(fname, SSH_FXF_READ));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ fh = fxp_open_recv(pktin, rreq);
- fh = fxp_open(fname, SSH_FXF_READ);
if (!fh) {
printf("%s: %s\n", fname, fxp_error());
sfree(fname);
return 0;
}
- fp = fopen(outfname, "wb");
+
+ if (restart) {
+ fp = fopen(outfname, "rb+");
+ } else {
+ fp = fopen(outfname, "wb");
+ }
+
if (!fp) {
printf("local: unable to open %s\n", outfname);
- fxp_close(fh);
+
+ sftp_register(req = fxp_close_send(fh));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ fxp_close_recv(pktin, rreq);
+
sfree(fname);
return 0;
}
- printf("remote:%s => local:%s\n", fname, outfname);
+ if (restart) {
+ long posn;
+ fseek(fp, 0L, SEEK_END);
+ posn = ftell(fp);
+ printf("reget: restarting at file position %ld\n", posn);
+ offset = uint64_make(0, posn);
+ } else {
+ offset = uint64_make(0, 0);
+ }
- offset = uint64_make(0,0);
+ printf("remote:%s => local:%s\n", fname, outfname);
/*
* FIXME: we can use FXP_FSTAT here to get the file size, and
* thus put up a progress bar.
*/
+ ret = 1;
while (1) {
char buffer[4096];
int len;
int wpos, wlen;
- len = fxp_read(fh, buffer, offset, sizeof(buffer));
- if ((len == -1 && fxp_error_type() == SSH_FX_EOF) ||
- len == 0)
+ sftp_register(req = fxp_read_send(fh, offset, sizeof(buffer)));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ len = fxp_read_recv(pktin, rreq, buffer, sizeof(buffer));
+
+ if ((len == -1 && fxp_error_type() == SSH_FX_EOF) || len == 0)
break;
if (len == -1) {
printf("error while reading: %s\n", fxp_error());
+ ret = 0;
break;
}
-
+
wpos = 0;
while (wpos < len) {
- wlen = fwrite(buffer, 1, len-wpos, fp);
+ wlen = fwrite(buffer, 1, len - wpos, fp);
if (wlen <= 0) {
printf("error while writing local file\n");
+ ret = 0;
break;
}
wpos += wlen;
}
- if (wpos < len) /* we had an error */
+ if (wpos < len) { /* we had an error */
+ ret = 0;
break;
+ }
offset = uint64_add32(offset, len);
}
fclose(fp);
- fxp_close(fh);
+
+ sftp_register(req = fxp_close_send(fh));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ fxp_close_recv(pktin, rreq);
+
sfree(fname);
- return 0;
+ return ret;
+}
+int sftp_cmd_get(struct sftp_command *cmd)
+{
+ return sftp_general_get(cmd, 0);
+}
+int sftp_cmd_reget(struct sftp_command *cmd)
+{
+ return sftp_general_get(cmd, 1);
}
/*
- * Send a file and store it at the remote end.
+ * Send a file and store it at the remote end. We have two very
+ * similar commands here: `put' and `reput', which differ in that
+ * `reput' checks for the existence of the destination file and
+ * starts from where a previous aborted transfer left off.
*/
-int sftp_cmd_put(struct sftp_command *cmd) {
+int sftp_general_put(struct sftp_command *cmd, int restart)
+{
struct fxp_handle *fh;
char *fname, *origoutfname, *outfname;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
uint64 offset;
FILE *fp;
+ int ret;
+
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
if (cmd->nwords < 2) {
printf("put: expects a filename\n");
}
fname = cmd->words[1];
- origoutfname = (cmd->nwords == 2 ? cmd->words[1] : cmd->words[2]);
+ origoutfname = (cmd->nwords == 2 ?
+ stripslashes(cmd->words[1], 1) : cmd->words[2]);
outfname = canonify(origoutfname);
-~|~ if (!outfname) {
+ if (!outfname) {
printf("%s: %s\n", origoutfname, fxp_error());
return 0;
}
fp = fopen(fname, "rb");
if (!fp) {
printf("local: unable to open %s\n", fname);
- fxp_close(fh);
sfree(outfname);
return 0;
}
- fh = fxp_open(outfname, SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC);
+ if (restart) {
+ sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE));
+ } else {
+ sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE |
+ SSH_FXF_CREAT | SSH_FXF_TRUNC));
+ }
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ fh = fxp_open_recv(pktin, rreq);
+
if (!fh) {
printf("%s: %s\n", outfname, fxp_error());
sfree(outfname);
return 0;
}
- printf("local:%s => remote:%s\n", fname, outfname);
+ if (restart) {
+ char decbuf[30];
+ struct fxp_attrs attrs;
+ int ret;
+
+ sftp_register(req = fxp_fstat_send(fh));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ ret = fxp_fstat_recv(pktin, rreq, &attrs);
+
+ if (!ret) {
+ printf("read size of %s: %s\n", outfname, fxp_error());
+ sfree(outfname);
+ return 0;
+ }
+ if (!(attrs.flags & SSH_FILEXFER_ATTR_SIZE)) {
+ printf("read size of %s: size was not given\n", outfname);
+ sfree(outfname);
+ return 0;
+ }
+ offset = attrs.size;
+ uint64_decimal(offset, decbuf);
+ printf("reput: restarting at file position %s\n", decbuf);
+ if (uint64_compare(offset, uint64_make(0, LONG_MAX)) > 0) {
+ printf("reput: remote file is larger than we can deal with\n");
+ sfree(outfname);
+ return 0;
+ }
+ if (fseek(fp, offset.lo, SEEK_SET) != 0)
+ fseek(fp, 0, SEEK_END); /* *shrug* */
+ } else {
+ offset = uint64_make(0, 0);
+ }
- offset = uint64_make(0,0);
+ printf("local:%s => remote:%s\n", fname, outfname);
/*
* FIXME: we can use FXP_FSTAT here to get the file size, and
* thus put up a progress bar.
*/
+ ret = 1;
while (1) {
char buffer[4096];
- int len;
+ int len, ret;
- len = fread(buffer, 1, len, fp);
+ len = fread(buffer, 1, sizeof(buffer), fp);
if (len == -1) {
printf("error while reading local file\n");
+ ret = 0;
break;
} else if (len == 0) {
break;
}
- if (!fxp_write(fh, buffer, offset, sizeof(buffer))) {
+
+ sftp_register(req = fxp_write_send(fh, buffer, offset, len));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ ret = fxp_write_recv(pktin, rreq);
+
+ if (!ret) {
printf("error while writing: %s\n", fxp_error());
+ ret = 0;
break;
}
offset = uint64_add32(offset, len);
}
- fxp_close(fh);
+ sftp_register(req = fxp_close_send(fh));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ fxp_close_recv(pktin, rreq);
+
fclose(fp);
sfree(outfname);
- return 0;
+ return ret;
+}
+int sftp_cmd_put(struct sftp_command *cmd)
+{
+ return sftp_general_put(cmd, 0);
+}
+int sftp_cmd_reput(struct sftp_command *cmd)
+{
+ return sftp_general_put(cmd, 1);
+}
+
+int sftp_cmd_mkdir(struct sftp_command *cmd)
+{
+ char *dir;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
+ int result;
+
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
+
+ if (cmd->nwords < 2) {
+ printf("mkdir: expects a directory\n");
+ return 0;
+ }
+
+ dir = canonify(cmd->words[1]);
+ if (!dir) {
+ printf("%s: %s\n", dir, fxp_error());
+ return 0;
+ }
+
+ sftp_register(req = fxp_mkdir_send(dir));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ result = fxp_mkdir_recv(pktin, rreq);
+
+ if (!result) {
+ printf("mkdir %s: %s\n", dir, fxp_error());
+ sfree(dir);
+ return 0;
+ }
+
+ sfree(dir);
+ return 1;
+}
+
+int sftp_cmd_rmdir(struct sftp_command *cmd)
+{
+ char *dir;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
+ int result;
+
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
+
+ if (cmd->nwords < 2) {
+ printf("rmdir: expects a directory\n");
+ return 0;
+ }
+
+ dir = canonify(cmd->words[1]);
+ if (!dir) {
+ printf("%s: %s\n", dir, fxp_error());
+ return 0;
+ }
+
+ sftp_register(req = fxp_rmdir_send(dir));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ result = fxp_rmdir_recv(pktin, rreq);
+
+ if (!result) {
+ printf("rmdir %s: %s\n", dir, fxp_error());
+ sfree(dir);
+ return 0;
+ }
+
+ sfree(dir);
+ return 1;
+}
+
+int sftp_cmd_rm(struct sftp_command *cmd)
+{
+ char *fname;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
+ int result;
+
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
+
+ if (cmd->nwords < 2) {
+ printf("rm: expects a filename\n");
+ return 0;
+ }
+
+ fname = canonify(cmd->words[1]);
+ if (!fname) {
+ printf("%s: %s\n", fname, fxp_error());
+ return 0;
+ }
+
+ sftp_register(req = fxp_remove_send(fname));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ result = fxp_remove_recv(pktin, rreq);
+
+ if (!result) {
+ printf("rm %s: %s\n", fname, fxp_error());
+ sfree(fname);
+ return 0;
+ }
+
+ sfree(fname);
+ return 1;
+}
+
+int sftp_cmd_mv(struct sftp_command *cmd)
+{
+ char *srcfname, *dstfname;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
+ int result;
+
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
+
+ if (cmd->nwords < 3) {
+ printf("mv: expects two filenames\n");
+ return 0;
+ }
+ srcfname = canonify(cmd->words[1]);
+ if (!srcfname) {
+ printf("%s: %s\n", srcfname, fxp_error());
+ return 0;
+ }
+
+ dstfname = canonify(cmd->words[2]);
+ if (!dstfname) {
+ printf("%s: %s\n", dstfname, fxp_error());
+ return 0;
+ }
+
+ sftp_register(req = fxp_rename_send(srcfname, dstfname));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ result = fxp_rename_recv(pktin, rreq);
+
+ if (!result) {
+ char const *error = fxp_error();
+ struct fxp_attrs attrs;
+
+ /*
+ * The move might have failed because dstfname pointed at a
+ * directory. We check this possibility now: if dstfname
+ * _is_ a directory, we re-attempt the move by appending
+ * the basename of srcfname to dstfname.
+ */
+ sftp_register(req = fxp_stat_send(dstfname));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ result = fxp_stat_recv(pktin, rreq, &attrs);
+
+ if (result &&
+ (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) &&
+ (attrs.permissions & 0040000)) {
+ char *p;
+ char *newname, *newcanon;
+ printf("(destination %s is a directory)\n", dstfname);
+ p = srcfname + strlen(srcfname);
+ while (p > srcfname && p[-1] != '/') p--;
+ newname = dupcat(dstfname, "/", p, NULL);
+ newcanon = canonify(newname);
+ sfree(newname);
+ if (newcanon) {
+ sfree(dstfname);
+ dstfname = newcanon;
+
+ sftp_register(req = fxp_rename_send(srcfname, dstfname));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ result = fxp_rename_recv(pktin, rreq);
+
+ error = result ? NULL : fxp_error();
+ }
+ }
+ if (error) {
+ printf("mv %s %s: %s\n", srcfname, dstfname, error);
+ sfree(srcfname);
+ sfree(dstfname);
+ return 0;
+ }
+ }
+ printf("%s -> %s\n", srcfname, dstfname);
+
+ sfree(srcfname);
+ sfree(dstfname);
+ return 1;
+}
+
+int sftp_cmd_chmod(struct sftp_command *cmd)
+{
+ char *fname, *mode;
+ int result;
+ struct fxp_attrs attrs;
+ unsigned attrs_clr, attrs_xor, oldperms, newperms;
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
+
+ if (back == NULL) {
+ printf("psftp: not connected to a host; use \"open host.name\"\n");
+ return 0;
+ }
+
+ if (cmd->nwords < 3) {
+ printf("chmod: expects a mode specifier and a filename\n");
+ return 0;
+ }
+
+ /*
+ * Attempt to parse the mode specifier in cmd->words[1]. We
+ * don't support the full horror of Unix chmod; instead we
+ * support a much simpler syntax in which the user can either
+ * specify an octal number, or a comma-separated sequence of
+ * [ugoa]*[-+=][rwxst]+. (The initial [ugoa] sequence may
+ * _only_ be omitted if the only attribute mentioned is t,
+ * since all others require a user/group/other specification.
+ * Additionally, the s attribute may not be specified for any
+ * [ugoa] specifications other than exactly u or exactly g.
+ */
+ attrs_clr = attrs_xor = 0;
+ mode = cmd->words[1];
+ if (mode[0] >= '0' && mode[0] <= '9') {
+ if (mode[strspn(mode, "01234567")]) {
+ printf("chmod: numeric file modes should"
+ " contain digits 0-7 only\n");
+ return 0;
+ }
+ attrs_clr = 07777;
+ sscanf(mode, "%o", &attrs_xor);
+ attrs_xor &= attrs_clr;
+ } else {
+ while (*mode) {
+ char *modebegin = mode;
+ unsigned subset, perms;
+ int action;
+
+ subset = 0;
+ while (*mode && *mode != ',' &&
+ *mode != '+' && *mode != '-' && *mode != '=') {
+ switch (*mode) {
+ case 'u': subset |= 04700; break; /* setuid, user perms */
+ case 'g': subset |= 02070; break; /* setgid, group perms */
+ case 'o': subset |= 00007; break; /* just other perms */
+ case 'a': subset |= 06777; break; /* all of the above */
+ default:
+ printf("chmod: file mode '%.*s' contains unrecognised"
+ " user/group/other specifier '%c'\n",
+ strcspn(modebegin, ","), modebegin, *mode);
+ return 0;
+ }
+ mode++;
+ }
+ if (!*mode || *mode == ',') {
+ printf("chmod: file mode '%.*s' is incomplete\n",
+ strcspn(modebegin, ","), modebegin);
+ return 0;
+ }
+ action = *mode++;
+ if (!*mode || *mode == ',') {
+ printf("chmod: file mode '%.*s' is incomplete\n",
+ strcspn(modebegin, ","), modebegin);
+ return 0;
+ }
+ perms = 0;
+ while (*mode && *mode != ',') {
+ switch (*mode) {
+ case 'r': perms |= 00444; break;
+ case 'w': perms |= 00222; break;
+ case 'x': perms |= 00111; break;
+ case 't': perms |= 01000; subset |= 01000; break;
+ case 's':
+ if ((subset & 06777) != 04700 &&
+ (subset & 06777) != 02070) {
+ printf("chmod: file mode '%.*s': set[ug]id bit should"
+ " be used with exactly one of u or g only\n",
+ strcspn(modebegin, ","), modebegin);
+ return 0;
+ }
+ perms |= 06000;
+ break;
+ default:
+ printf("chmod: file mode '%.*s' contains unrecognised"
+ " permission specifier '%c'\n",
+ strcspn(modebegin, ","), modebegin, *mode);
+ return 0;
+ }
+ mode++;
+ }
+ if (!(subset & 06777) && (perms &~ subset)) {
+ printf("chmod: file mode '%.*s' contains no user/group/other"
+ " specifier and permissions other than 't' \n",
+ strcspn(modebegin, ","), modebegin);
+ return 0;
+ }
+ perms &= subset;
+ switch (action) {
+ case '+':
+ attrs_clr |= perms;
+ attrs_xor |= perms;
+ break;
+ case '-':
+ attrs_clr |= perms;
+ attrs_xor &= ~perms;
+ break;
+ case '=':
+ attrs_clr |= subset;
+ attrs_xor |= perms;
+ break;
+ }
+ if (*mode) mode++; /* eat comma */
+ }
+ }
+
+ fname = canonify(cmd->words[2]);
+ if (!fname) {
+ printf("%s: %s\n", fname, fxp_error());
+ return 0;
+ }
+
+ sftp_register(req = fxp_stat_send(fname));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ result = fxp_stat_recv(pktin, rreq, &attrs);
+
+ if (!result || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) {
+ printf("get attrs for %s: %s\n", fname,
+ result ? "file permissions not provided" : fxp_error());
+ sfree(fname);
+ return 0;
+ }
+
+ attrs.flags = SSH_FILEXFER_ATTR_PERMISSIONS; /* perms _only_ */
+ oldperms = attrs.permissions & 07777;
+ attrs.permissions &= ~attrs_clr;
+ attrs.permissions ^= attrs_xor;
+ newperms = attrs.permissions & 07777;
+
+ sftp_register(req = fxp_setstat_send(fname, attrs));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ result = fxp_setstat_recv(pktin, rreq);
+
+ if (!result) {
+ printf("set attrs for %s: %s\n", fname, fxp_error());
+ sfree(fname);
+ return 0;
+ }
+
+ printf("%s: %04o -> %04o\n", fname, oldperms, newperms);
+
+ sfree(fname);
+ return 1;
+}
+
+static int sftp_cmd_open(struct sftp_command *cmd)
+{
+ if (back != NULL) {
+ printf("psftp: already connected\n");
+ return 0;
+ }
+
+ if (cmd->nwords < 2) {
+ printf("open: expects a host name\n");
+ return 0;
+ }
+
+ if (psftp_connect(cmd->words[1], NULL, 0)) {
+ back = NULL; /* connection is already closed */
+ return -1; /* this is fatal */
+ }
+ do_sftp_init();
+ return 1;
+}
+
+static int sftp_cmd_lcd(struct sftp_command *cmd)
+{
+ char *currdir, *errmsg;
+
+ if (cmd->nwords < 2) {
+ printf("lcd: expects a local directory name\n");
+ return 0;
+ }
+
+ errmsg = psftp_lcd(cmd->words[1]);
+ if (errmsg) {
+ printf("lcd: unable to change directory: %s\n", errmsg);
+ sfree(errmsg);
+ return 0;
+ }
+
+ currdir = psftp_getcwd();
+ printf("New local directory is %s\n", currdir);
+ sfree(currdir);
+
+ return 1;
+}
+
+static int sftp_cmd_lpwd(struct sftp_command *cmd)
+{
+ char *currdir;
+
+ currdir = psftp_getcwd();
+ printf("Current local directory is %s\n", currdir);
+ sfree(currdir);
+
+ return 1;
}
+static int sftp_cmd_pling(struct sftp_command *cmd)
+{
+ int exitcode;
+
+ exitcode = system(cmd->words[1]);
+ return (exitcode == 0);
+}
+
+static int sftp_cmd_help(struct sftp_command *cmd);
+
static struct sftp_cmd_lookup {
char *name;
- int (*obey)(struct sftp_command *);
+ /*
+ * For help purposes, there are two kinds of command:
+ *
+ * - primary commands, in which `longhelp' is non-NULL. In
+ * this case `shorthelp' is descriptive text, and `longhelp'
+ * is longer descriptive text intended to be printed after
+ * the command name.
+ *
+ * - alias commands, in which `longhelp' is NULL. In this case
+ * `shorthelp' is the name of a primary command, which
+ * contains the help that should double up for this command.
+ */
+ int listed; /* do we list this in primary help? */
+ char *shorthelp;
+ char *longhelp;
+ int (*obey) (struct sftp_command *);
} sftp_lookup[] = {
/*
* List of sftp commands. This is binary-searched so it MUST be
* in ASCII order.
*/
- {"bye", sftp_cmd_quit},
- {"cd", sftp_cmd_cd},
- {"exit", sftp_cmd_quit},
- {"get", sftp_cmd_get},
- {"ls", sftp_cmd_ls},
- {"put", sftp_cmd_put},
- {"quit", sftp_cmd_quit},
+ {
+ "!", TRUE, "run a local command",
+ "<command>\n"
+ /* FIXME: this example is crap for non-Windows. */
+ " Runs a local command. For example, \"!del myfile\".\n",
+ sftp_cmd_pling
+ },
+ {
+ "bye", TRUE, "finish your SFTP session",
+ "\n"
+ " Terminates your SFTP session and quits the PSFTP program.\n",
+ sftp_cmd_quit
+ },
+ {
+ "cd", TRUE, "change your remote working directory",
+ " [ <New working directory> ]\n"
+ " Change the remote working directory for your SFTP session.\n"
+ " If a new working directory is not supplied, you will be\n"
+ " returned to your home directory.\n",
+ sftp_cmd_cd
+ },
+ {
+ "chmod", TRUE, "change file permissions and modes",
+ " ( <octal-digits> | <modifiers> ) <filename>\n"
+ " Change the file permissions on a file or directory.\n"
+ " <octal-digits> can be any octal Unix permission specifier.\n"
+ " Alternatively, <modifiers> can include:\n"
+ " u+r make file readable by owning user\n"
+ " u+w make file writable by owning user\n"
+ " u+x make file executable by owning user\n"
+ " u-r make file not readable by owning user\n"
+ " [also u-w, u-x]\n"
+ " g+r make file readable by members of owning group\n"
+ " [also g+w, g+x, g-r, g-w, g-x]\n"
+ " o+r make file readable by all other users\n"
+ " [also o+w, o+x, o-r, o-w, o-x]\n"
+ " a+r make file readable by absolutely everybody\n"
+ " [also a+w, a+x, a-r, a-w, a-x]\n"
+ " u+s enable the Unix set-user-ID bit\n"
+ " u-s disable the Unix set-user-ID bit\n"
+ " g+s enable the Unix set-group-ID bit\n"
+ " g-s disable the Unix set-group-ID bit\n"
+ " +t enable the Unix \"sticky bit\"\n"
+ " You can give more than one modifier for the same user (\"g-rwx\"), and\n"
+ " more than one user for the same modifier (\"ug+w\"). You can\n"
+ " use commas to separate different modifiers (\"u+rwx,g+s\").\n",
+ sftp_cmd_chmod
+ },
+ {
+ "del", TRUE, "delete a file",
+ " <filename>\n"
+ " Delete a file.\n",
+ sftp_cmd_rm
+ },
+ {
+ "delete", FALSE, "del", NULL, sftp_cmd_rm
+ },
+ {
+ "dir", TRUE, "list contents of a remote directory",
+ " [ <directory-name> ]\n"
+ " List the contents of a specified directory on the server.\n"
+ " If <directory-name> is not given, the current working directory\n"
+ " will be listed.\n",
+ sftp_cmd_ls
+ },
+ {
+ "exit", TRUE, "bye", NULL, sftp_cmd_quit
+ },
+ {
+ "get", TRUE, "download a file from the server to your local machine",
+ " <filename> [ <local-filename> ]\n"
+ " Downloads a file on the server and stores it locally under\n"
+ " the same name, or under a different one if you supply the\n"
+ " argument <local-filename>.\n",
+ sftp_cmd_get
+ },
+ {
+ "help", TRUE, "give help",
+ " [ <command> [ <command> ... ] ]\n"
+ " Give general help if no commands are specified.\n"
+ " If one or more commands are specified, give specific help on\n"
+ " those particular commands.\n",
+ sftp_cmd_help
+ },
+ {
+ "lcd", TRUE, "change local working directory",
+ " <local-directory-name>\n"
+ " Change the local working directory of the PSFTP program (the\n"
+ " default location where the \"get\" command will save files).\n",
+ sftp_cmd_lcd
+ },
+ {
+ "lpwd", TRUE, "print local working directory",
+ "\n"
+ " Print the local working directory of the PSFTP program (the\n"
+ " default location where the \"get\" command will save files).\n",
+ sftp_cmd_lpwd
+ },
+ {
+ "ls", TRUE, "dir", NULL,
+ sftp_cmd_ls
+ },
+ {
+ "mkdir", TRUE, "create a directory on the remote server",
+ " <directory-name>\n"
+ " Creates a directory with the given name on the server.\n",
+ sftp_cmd_mkdir
+ },
+ {
+ "mv", TRUE, "move or rename a file on the remote server",
+ " <source-filename> <destination-filename>\n"
+ " Moves or renames the file <source-filename> on the server,\n"
+ " so that it is accessible under the name <destination-filename>.\n",
+ sftp_cmd_mv
+ },
+ {
+ "open", TRUE, "connect to a host",
+ " [<user>@]<hostname>\n"
+ " Establishes an SFTP connection to a given host. Only usable\n"
+ " when you did not already specify a host name on the command\n"
+ " line.\n",
+ sftp_cmd_open
+ },
+ {
+ "put", TRUE, "upload a file from your local machine to the server",
+ " <filename> [ <remote-filename> ]\n"
+ " Uploads a file to the server and stores it there under\n"
+ " the same name, or under a different one if you supply the\n"
+ " argument <remote-filename>.\n",
+ sftp_cmd_put
+ },
+ {
+ "pwd", TRUE, "print your remote working directory",
+ "\n"
+ " Print the current remote working directory for your SFTP session.\n",
+ sftp_cmd_pwd
+ },
+ {
+ "quit", TRUE, "bye", NULL,
+ sftp_cmd_quit
+ },
+ {
+ "reget", TRUE, "continue downloading a file",
+ " <filename> [ <local-filename> ]\n"
+ " Works exactly like the \"get\" command, but the local file\n"
+ " must already exist. The download will begin at the end of the\n"
+ " file. This is for resuming a download that was interrupted.\n",
+ sftp_cmd_reget
+ },
+ {
+ "ren", TRUE, "mv", NULL,
+ sftp_cmd_mv
+ },
+ {
+ "rename", FALSE, "mv", NULL,
+ sftp_cmd_mv
+ },
+ {
+ "reput", TRUE, "continue uploading a file",
+ " <filename> [ <remote-filename> ]\n"
+ " Works exactly like the \"put\" command, but the remote file\n"
+ " must already exist. The upload will begin at the end of the\n"
+ " file. This is for resuming an upload that was interrupted.\n",
+ sftp_cmd_reput
+ },
+ {
+ "rm", TRUE, "del", NULL,
+ sftp_cmd_rm
+ },
+ {
+ "rmdir", TRUE, "remove a directory on the remote server",
+ " <directory-name>\n"
+ " Removes the directory with the given name on the server.\n"
+ " The directory will not be removed unless it is empty.\n",
+ sftp_cmd_rmdir
+ }
};
+const struct sftp_cmd_lookup *lookup_command(char *name)
+{
+ int i, j, k, cmp;
+
+ i = -1;
+ j = sizeof(sftp_lookup) / sizeof(*sftp_lookup);
+ while (j - i > 1) {
+ k = (j + i) / 2;
+ cmp = strcmp(name, sftp_lookup[k].name);
+ if (cmp < 0)
+ j = k;
+ else if (cmp > 0)
+ i = k;
+ else {
+ return &sftp_lookup[k];
+ }
+ }
+ return NULL;
+}
+
+static int sftp_cmd_help(struct sftp_command *cmd)
+{
+ int i;
+ if (cmd->nwords == 1) {
+ /*
+ * Give short help on each command.
+ */
+ int maxlen;
+ maxlen = 0;
+ for (i = 0; i < sizeof(sftp_lookup) / sizeof(*sftp_lookup); i++) {
+ int len;
+ if (!sftp_lookup[i].listed)
+ continue;
+ len = strlen(sftp_lookup[i].name);
+ if (maxlen < len)
+ maxlen = len;
+ }
+ for (i = 0; i < sizeof(sftp_lookup) / sizeof(*sftp_lookup); i++) {
+ const struct sftp_cmd_lookup *lookup;
+ if (!sftp_lookup[i].listed)
+ continue;
+ lookup = &sftp_lookup[i];
+ printf("%-*s", maxlen+2, lookup->name);
+ if (lookup->longhelp == NULL)
+ lookup = lookup_command(lookup->shorthelp);
+ printf("%s\n", lookup->shorthelp);
+ }
+ } else {
+ /*
+ * Give long help on specific commands.
+ */
+ for (i = 1; i < cmd->nwords; i++) {
+ const struct sftp_cmd_lookup *lookup;
+ lookup = lookup_command(cmd->words[i]);
+ if (!lookup) {
+ printf("help: %s: command not found\n", cmd->words[i]);
+ } else {
+ printf("%s", lookup->name);
+ if (lookup->longhelp == NULL)
+ lookup = lookup_command(lookup->shorthelp);
+ printf("%s", lookup->longhelp);
+ }
+ }
+ }
+ return 1;
+}
+
/* ----------------------------------------------------------------------
* Command line reading and parsing.
*/
-struct sftp_command *sftp_getcmd(void) {
+struct sftp_command *sftp_getcmd(FILE *fp, int mode, int modeflags)
+{
char *line;
int linelen, linesize;
struct sftp_command *cmd;
char *p, *q, *r;
int quoting;
- printf("psftp> ");
+ if ((mode == 0) || (modeflags & 1)) {
+ printf("psftp> ");
+ }
fflush(stdout);
- cmd = smalloc(sizeof(struct sftp_command));
+ cmd = snew(struct sftp_command);
cmd->words = NULL;
cmd->nwords = 0;
cmd->wordssize = 0;
char *ret;
linesize += 512;
- line = srealloc(line, linesize);
- ret = fgets(line+linelen, linesize-linelen, stdin);
+ line = sresize(line, linesize, char);
+ ret = fgets(line + linelen, linesize - linelen, fp);
if (!ret || (linelen == 0 && line[0] == '\0')) {
cmd->obey = sftp_cmd_quit;
- printf("quit\n");
+ if ((mode == 0) || (modeflags & 1))
+ printf("quit\n");
return cmd; /* eof */
}
- len = linelen + strlen(line+linelen);
+ len = linelen + strlen(line + linelen);
linelen += len;
- if (line[linelen-1] == '\n') {
+ if (line[linelen - 1] == '\n') {
linelen--;
line[linelen] = '\0';
break;
}
}
+ if (modeflags & 1) {
+ printf("%s\n", line);
+ }
- /*
- * Parse the command line into words. The syntax is:
- * - double quotes are removed, but cause spaces within to be
- * treated as non-separating.
- * - a double-doublequote pair is a literal double quote, inside
- * _or_ outside quotes. Like this:
- *
- * firstword "second word" "this has ""quotes"" in" sodoes""this""
- *
- * becomes
- *
- * >firstword<
- * >second word<
- * >this has "quotes" in<
- * >sodoes"this"<
- */
p = line;
- while (*p) {
- /* skip whitespace */
- while (*p && (*p == ' ' || *p == '\t')) p++;
- /* mark start of word */
- q = r = p; /* q sits at start, r writes word */
- quoting = 0;
+ while (*p && (*p == ' ' || *p == '\t'))
+ p++;
+
+ if (*p == '!') {
+ /*
+ * Special case: the ! command. This is always parsed as
+ * exactly two words: one containing the !, and the second
+ * containing everything else on the line.
+ */
+ cmd->nwords = cmd->wordssize = 2;
+ cmd->words = sresize(cmd->words, cmd->wordssize, char *);
+ cmd->words[0] = "!";
+ cmd->words[1] = p+1;
+ } else {
+
+ /*
+ * Parse the command line into words. The syntax is:
+ * - double quotes are removed, but cause spaces within to be
+ * treated as non-separating.
+ * - a double-doublequote pair is a literal double quote, inside
+ * _or_ outside quotes. Like this:
+ *
+ * firstword "second word" "this has ""quotes"" in" and""this""
+ *
+ * becomes
+ *
+ * >firstword<
+ * >second word<
+ * >this has "quotes" in<
+ * >and"this"<
+ */
while (*p) {
- if (!quoting && (*p == ' ' || *p == '\t'))
- break; /* reached end of word */
- else if (*p == '"' && p[1] == '"')
- p+=2, *r++ = '"'; /* a literal quote */
- else if (*p == '"')
- p++, quoting = !quoting;
- else
- *r++ = *p++;
- }
- if (*p) p++; /* skip over the whitespace */
- *r = '\0';
- if (cmd->nwords >= cmd->wordssize) {
- cmd->wordssize = cmd->nwords + 16;
- cmd->words = srealloc(cmd->words, cmd->wordssize*sizeof(char *));
+ /* skip whitespace */
+ while (*p && (*p == ' ' || *p == '\t'))
+ p++;
+ /* mark start of word */
+ q = r = p; /* q sits at start, r writes word */
+ quoting = 0;
+ while (*p) {
+ if (!quoting && (*p == ' ' || *p == '\t'))
+ break; /* reached end of word */
+ else if (*p == '"' && p[1] == '"')
+ p += 2, *r++ = '"'; /* a literal quote */
+ else if (*p == '"')
+ p++, quoting = !quoting;
+ else
+ *r++ = *p++;
+ }
+ if (*p)
+ p++; /* skip over the whitespace */
+ *r = '\0';
+ if (cmd->nwords >= cmd->wordssize) {
+ cmd->wordssize = cmd->nwords + 16;
+ cmd->words = sresize(cmd->words, cmd->wordssize, char *);
+ }
+ cmd->words[cmd->nwords++] = q;
}
- cmd->words[cmd->nwords++] = q;
}
/*
if (cmd->nwords == 0)
cmd->obey = sftp_cmd_null;
else {
- int i, j, k, cmp;
-
- cmd->obey = sftp_cmd_unknown;
-
- i = -1;
- j = sizeof(sftp_lookup) / sizeof(*sftp_lookup);
- while (j - i > 1) {
- k = (j + i) / 2;
- cmp = strcmp(cmd->words[0], sftp_lookup[k].name);
- if (cmp < 0)
- j = k;
- else if (cmp > 0)
- i = k;
- else {
- cmd->obey = sftp_lookup[k].obey;
- break;
- }
- }
+ const struct sftp_cmd_lookup *lookup;
+ lookup = lookup_command(cmd->words[0]);
+ if (!lookup)
+ cmd->obey = sftp_cmd_unknown;
+ else
+ cmd->obey = lookup->obey;
}
return cmd;
}
-void do_sftp(void) {
+static int do_sftp_init(void)
+{
+ struct sftp_packet *pktin;
+ struct sftp_request *req, *rreq;
+
/*
* Do protocol initialisation.
*/
if (!fxp_init()) {
fprintf(stderr,
- "Fatal: unable to initialise SFTP: %s\n",
- fxp_error());
+ "Fatal: unable to initialise SFTP: %s\n", fxp_error());
+ return 1; /* failure */
}
/*
* Find out where our home directory is.
*/
- homedir = fxp_realpath(".", NULL);
+ sftp_register(req = fxp_realpath_send("."));
+ rreq = sftp_find_request(pktin = sftp_recv());
+ assert(rreq == req);
+ homedir = fxp_realpath_recv(pktin, rreq);
+
if (!homedir) {
fprintf(stderr,
"Warning: failed to resolve home directory: %s\n",
printf("Remote working directory is %s\n", homedir);
}
pwd = dupstr(homedir);
+ return 0;
+}
+
+void do_sftp(int mode, int modeflags, char *batchfile)
+{
+ FILE *fp;
+ int ret;
- /* ------------------------------------------------------------------
- * Now we're ready to do Real Stuff.
+ /*
+ * Batch mode?
*/
- while (1) {
- struct sftp_command *cmd;
- cmd = sftp_getcmd();
- if (!cmd)
- break;
- if (cmd->obey(cmd) < 0)
- break;
+ if (mode == 0) {
+
+ /* ------------------------------------------------------------------
+ * Now we're ready to do Real Stuff.
+ */
+ while (1) {
+ struct sftp_command *cmd;
+ cmd = sftp_getcmd(stdin, 0, 0);
+ if (!cmd)
+ break;
+ if (cmd->obey(cmd) < 0)
+ break;
+ }
+ } else {
+ fp = fopen(batchfile, "r");
+ if (!fp) {
+ printf("Fatal: unable to open %s\n", batchfile);
+ return;
+ }
+ while (1) {
+ struct sftp_command *cmd;
+ cmd = sftp_getcmd(fp, mode, modeflags);
+ if (!cmd)
+ break;
+ ret = cmd->obey(cmd);
+ if (ret < 0)
+ break;
+ if (ret == 0) {
+ if (!(modeflags & 2))
+ break;
+ }
+ }
+ fclose(fp);
+
+ }
+}
+
+/* ----------------------------------------------------------------------
+ * Dirty bits: integration with PuTTY.
+ */
+
+static int verbose = 0;
+
+/*
+ * Print an error message and perform a fatal exit.
+ */
+void fatalbox(char *fmt, ...)
+{
+ char *str, *str2;
+ va_list ap;
+ va_start(ap, fmt);
+ str = dupvprintf(fmt, ap);
+ str2 = dupcat("Fatal: ", str, "\n", NULL);
+ sfree(str);
+ va_end(ap);
+ fputs(str2, stderr);
+ sfree(str2);
+
+ cleanup_exit(1);
+}
+void modalfatalbox(char *fmt, ...)
+{
+ char *str, *str2;
+ va_list ap;
+ va_start(ap, fmt);
+ str = dupvprintf(fmt, ap);
+ str2 = dupcat("Fatal: ", str, "\n", NULL);
+ sfree(str);
+ va_end(ap);
+ fputs(str2, stderr);
+ sfree(str2);
+
+ cleanup_exit(1);
+}
+void connection_fatal(void *frontend, char *fmt, ...)
+{
+ char *str, *str2;
+ va_list ap;
+ va_start(ap, fmt);
+ str = dupvprintf(fmt, ap);
+ str2 = dupcat("Fatal: ", str, "\n", NULL);
+ sfree(str);
+ va_end(ap);
+ fputs(str2, stderr);
+ sfree(str2);
+
+ cleanup_exit(1);
+}
+
+void ldisc_send(void *handle, char *buf, int len, int interactive)
+{
+ /*
+ * This is only here because of the calls to ldisc_send(NULL,
+ * 0) in ssh.c. Nothing in PSFTP actually needs to use the
+ * ldisc as an ldisc. So if we get called with any real data, I
+ * want to know about it.
+ */
+ assert(len == 0);
+}
+
+/*
+ * In psftp, all agent requests should be synchronous, so this is a
+ * never-called stub.
+ */
+void agent_schedule_callback(void (*callback)(void *, void *, int),
+ void *callback_ctx, void *data, int len)
+{
+ assert(!"We shouldn't be here");
+}
+
+/*
+ * Receive a block of data from the SSH link. Block until all data
+ * is available.
+ *
+ * To do this, we repeatedly call the SSH protocol module, with our
+ * own trap in from_backend() to catch the data that comes back. We
+ * do this until we have enough data.
+ */
+
+static unsigned char *outptr; /* where to put the data */
+static unsigned outlen; /* how much data required */
+static unsigned char *pending = NULL; /* any spare data */
+static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */
+int from_backend(void *frontend, int is_stderr, const char *data, int datalen)
+{
+ unsigned char *p = (unsigned char *) data;
+ unsigned len = (unsigned) datalen;
+
+ assert(len > 0);
+
+ /*
+ * stderr data is just spouted to local stderr and otherwise
+ * ignored.
+ */
+ if (is_stderr) {
+ fwrite(data, 1, len, stderr);
+ return 0;
+ }
+
+ /*
+ * If this is before the real session begins, just return.
+ */
+ if (!outptr)
+ return 0;
+
+ if (outlen > 0) {
+ unsigned used = outlen;
+ if (used > len)
+ used = len;
+ memcpy(outptr, p, used);
+ outptr += used;
+ outlen -= used;
+ p += used;
+ len -= used;
+ }
+
+ if (len > 0) {
+ if (pendsize < pendlen + len) {
+ pendsize = pendlen + len + 4096;
+ pending = sresize(pending, pendsize, unsigned char);
+ }
+ memcpy(pending + pendlen, p, len);
+ pendlen += len;
}
- /* ------------------------------------------------------------------
- * We've received an exit command. Tidy up and leave.
+ return 0;
+}
+int sftp_recvdata(char *buf, int len)
+{
+ outptr = (unsigned char *) buf;
+ outlen = len;
+
+ /*
+ * See if the pending-input block contains some of what we
+ * need.
*/
- io_finish();
+ if (pendlen > 0) {
+ unsigned pendused = pendlen;
+ if (pendused > outlen)
+ pendused = outlen;
+ memcpy(outptr, pending, pendused);
+ memmove(pending, pending + pendused, pendlen - pendused);
+ outptr += pendused;
+ outlen -= pendused;
+ pendlen -= pendused;
+ if (pendlen == 0) {
+ pendsize = 0;
+ sfree(pending);
+ pending = NULL;
+ }
+ if (outlen == 0)
+ return 1;
+ }
+
+ while (outlen > 0) {
+ if (ssh_sftp_loop_iteration() < 0)
+ return 0; /* doom */
+ }
+
+ return 1;
+}
+int sftp_senddata(char *buf, int len)
+{
+ back->send(backhandle, (unsigned char *) buf, len);
+ return 1;
+}
+
+/*
+ * Short description of parameters.
+ */
+static void usage(void)
+{
+ printf("PuTTY Secure File Transfer (SFTP) client\n");
+ printf("%s\n", ver);
+ printf("Usage: psftp [options] user@host\n");
+ printf("Options:\n");
+ printf(" -b file use specified batchfile\n");
+ printf(" -bc output batchfile commands\n");
+ printf(" -be don't stop batchfile processing if errors\n");
+ printf(" -v show verbose messages\n");
+ printf(" -load sessname Load settings from saved session\n");
+ printf(" -l user connect with specified username\n");
+ printf(" -P port connect to specified port\n");
+ printf(" -pw passw login with specified password\n");
+ printf(" -1 -2 force use of particular SSH protocol version\n");
+ printf(" -C enable compression\n");
+ printf(" -i key private key file for authentication\n");
+ printf(" -batch disable all interactive prompts\n");
+ cleanup_exit(1);
}
-int main(void) {
- io_init();
- do_sftp();
+/*
+ * Connect to a host.
+ */
+static int psftp_connect(char *userhost, char *user, int portnumber)
+{
+ char *host, *realhost;
+ const char *err;
+
+ /* Separate host and username */
+ host = userhost;
+ host = strrchr(host, '@');
+ if (host == NULL) {
+ host = userhost;
+ } else {
+ *host++ = '\0';
+ if (user) {
+ printf("psftp: multiple usernames specified; using \"%s\"\n",
+ user);
+ } else
+ user = userhost;
+ }
+
+ /* Try to load settings for this host */
+ do_defaults(host, &cfg);
+ if (cfg.host[0] == '\0') {
+ /* No settings for this host; use defaults */
+ do_defaults(NULL, &cfg);
+ strncpy(cfg.host, host, sizeof(cfg.host) - 1);
+ cfg.host[sizeof(cfg.host) - 1] = '\0';
+ }
+
+ /*
+ * Force use of SSH. (If they got the protocol wrong we assume the
+ * port is useless too.)
+ */
+ if (cfg.protocol != PROT_SSH) {
+ cfg.protocol = PROT_SSH;
+ cfg.port = 22;
+ }
+
+ /*
+ * Enact command-line overrides.
+ */
+ cmdline_run_saved(&cfg);
+
+ /*
+ * Trim leading whitespace off the hostname if it's there.
+ */
+ {
+ int space = strspn(cfg.host, " \t");
+ memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space);
+ }
+
+ /* See if host is of the form user@host */
+ if (cfg.host[0] != '\0') {
+ char *atsign = strchr(cfg.host, '@');
+ /* Make sure we're not overflowing the user field */
+ if (atsign) {
+ if (atsign - cfg.host < sizeof cfg.username) {
+ strncpy(cfg.username, cfg.host, atsign - cfg.host);
+ cfg.username[atsign - cfg.host] = '\0';
+ }
+ memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1));
+ }
+ }
+
+ /*
+ * Trim a colon suffix off the hostname if it's there.
+ */
+ cfg.host[strcspn(cfg.host, ":")] = '\0';
+
+ /*
+ * Remove any remaining whitespace from the hostname.
+ */
+ {
+ int p1 = 0, p2 = 0;
+ while (cfg.host[p2] != '\0') {
+ if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') {
+ cfg.host[p1] = cfg.host[p2];
+ p1++;
+ }
+ p2++;
+ }
+ cfg.host[p1] = '\0';
+ }
+
+ /* Set username */
+ if (user != NULL && user[0] != '\0') {
+ strncpy(cfg.username, user, sizeof(cfg.username) - 1);
+ cfg.username[sizeof(cfg.username) - 1] = '\0';
+ }
+ if (!cfg.username[0]) {
+ printf("login as: ");
+ fflush(stdout);
+ if (!fgets(cfg.username, sizeof(cfg.username), stdin)) {
+ fprintf(stderr, "psftp: aborting\n");
+ cleanup_exit(1);
+ } else {
+ int len = strlen(cfg.username);
+ if (cfg.username[len - 1] == '\n')
+ cfg.username[len - 1] = '\0';
+ }
+ }
+
+ if (portnumber)
+ cfg.port = portnumber;
+
+ /* SFTP uses SSH2 by default always */
+ cfg.sshprot = 2;
+
+ /*
+ * Disable scary things which shouldn't be enabled for simple
+ * things like SCP and SFTP: agent forwarding, port forwarding,
+ * X forwarding.
+ */
+ cfg.x11_forward = 0;
+ cfg.agentfwd = 0;
+ cfg.portfwd[0] = cfg.portfwd[1] = '\0';
+
+ /* Set up subsystem name. */
+ strcpy(cfg.remote_cmd, "sftp");
+ cfg.ssh_subsys = TRUE;
+ cfg.nopty = TRUE;
+
+ /*
+ * Set up fallback option, for SSH1 servers or servers with the
+ * sftp subsystem not enabled but the server binary installed
+ * in the usual place. We only support fallback on Unix
+ * systems, and we use a kludgy piece of shellery which should
+ * try to find sftp-server in various places (the obvious
+ * systemwide spots /usr/lib and /usr/local/lib, and then the
+ * user's PATH) and finally give up.
+ *
+ * test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server
+ * test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server
+ * exec sftp-server
+ *
+ * the idea being that this will attempt to use either of the
+ * obvious pathnames and then give up, and when it does give up
+ * it will print the preferred pathname in the error messages.
+ */
+ cfg.remote_cmd_ptr2 =
+ "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n"
+ "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n"
+ "exec sftp-server";
+ cfg.ssh_subsys2 = FALSE;
+
+ back = &ssh_backend;
+
+ err = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port, &realhost,0);
+ if (err != NULL) {
+ fprintf(stderr, "ssh_init: %s\n", err);
+ return 1;
+ }
+ logctx = log_init(NULL, &cfg);
+ back->provide_logctx(backhandle, logctx);
+ console_provide_logctx(logctx);
+ while (!back->sendok(backhandle)) {
+ if (ssh_sftp_loop_iteration() < 0) {
+ fprintf(stderr, "ssh_init: error during SSH connection setup\n");
+ return 1;
+ }
+ }
+ if (verbose && realhost != NULL)
+ printf("Connected to %s\n", realhost);
+ return 0;
+}
+
+void cmdline_error(char *p, ...)
+{
+ va_list ap;
+ fprintf(stderr, "psftp: ");
+ va_start(ap, p);
+ vfprintf(stderr, p, ap);
+ va_end(ap);
+ fprintf(stderr, "\n try typing \"psftp -h\" for help\n");
+ exit(1);
+}
+
+/*
+ * Main program. Parse arguments etc.
+ */
+int psftp_main(int argc, char *argv[])
+{
+ int i;
+ int portnumber = 0;
+ char *userhost, *user;
+ int mode = 0;
+ int modeflags = 0;
+ char *batchfile = NULL;
+ int errors = 0;
+
+ flags = FLAG_STDERR | FLAG_INTERACTIVE | FLAG_SYNCAGENT;
+ cmdline_tooltype = TOOLTYPE_FILETRANSFER;
+ ssh_get_line = &console_get_line;
+ sk_init();
+
+ userhost = user = NULL;
+
+ errors = 0;
+ for (i = 1; i < argc; i++) {
+ int ret;
+ if (argv[i][0] != '-') {
+ if (userhost)
+ usage();
+ else
+ userhost = dupstr(argv[i]);
+ continue;
+ }
+ ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, &cfg);
+ if (ret == -2) {
+ cmdline_error("option \"%s\" requires an argument", argv[i]);
+ } else if (ret == 2) {
+ i++; /* skip next argument */
+ } else if (ret == 1) {
+ /* We have our own verbosity in addition to `flags'. */
+ if (flags & FLAG_VERBOSE)
+ verbose = 1;
+ } else if (strcmp(argv[i], "-h") == 0 ||
+ strcmp(argv[i], "-?") == 0) {
+ usage();
+ } else if (strcmp(argv[i], "-batch") == 0) {
+ console_batch_mode = 1;
+ } else if (strcmp(argv[i], "-b") == 0 && i + 1 < argc) {
+ mode = 1;
+ batchfile = argv[++i];
+ } else if (strcmp(argv[i], "-bc") == 0) {
+ modeflags = modeflags | 1;
+ } else if (strcmp(argv[i], "-be") == 0) {
+ modeflags = modeflags | 2;
+ } else if (strcmp(argv[i], "--") == 0) {
+ i++;
+ break;
+ } else {
+ cmdline_error("unknown option \"%s\"", argv[i]);
+ }
+ }
+ argc -= i;
+ argv += i;
+ back = NULL;
+
+ /*
+ * If a user@host string has already been provided, connect to
+ * it now.
+ */
+ if (userhost) {
+ if (psftp_connect(userhost, user, portnumber))
+ return 1;
+ if (do_sftp_init())
+ return 1;
+ } else {
+ printf("psftp: no hostname specified; use \"open host.name\""
+ " to connect\n");
+ }
+
+ do_sftp(mode, modeflags, batchfile);
+
+ if (back != NULL && back->socket(backhandle) != NULL) {
+ char ch;
+ back->special(backhandle, TS_EOF);
+ sftp_recvdata(&ch, 1);
+ }
+ random_save_seed();
+
return 0;
}
projects / u / mdw / putty / blobdiff