#include <stdlib.h>
#include <stdarg.h>
#include <assert.h>
+#include <limits.h>
#define PUTTY_DO_GLOBALS
#include "putty.h"
}
/*
- * Get a file and save it at the local end.
+ * 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_cmd_get(struct sftp_command *cmd)
+int sftp_general_get(struct sftp_command *cmd, int restart)
{
struct fxp_handle *fh;
char *fname, *outfname;
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);
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
return 0;
}
+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;
sfree(outfname);
return 0;
}
- fh = fxp_open(outfname, SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC);
+ if (restart) {
+ fh = fxp_open(outfname,
+ SSH_FXF_WRITE);
+ } else {
+ fh = fxp_open(outfname,
+ SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC);
+ }
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;
+ if (!fxp_fstat(fh, &attrs)) {
+ 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
return 0;
}
+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)
{
return 0;
}
- sfree(dir);
- return 0;
-
+ sfree(dir);
+ return 0;
}
int sftp_cmd_rmdir(struct sftp_command *cmd)
return 0;
}
- sfree(dir);
- return 0;
-
+ sfree(dir);
+ return 0;
}
int sftp_cmd_rm(struct sftp_command *cmd)
char *fname;
int result;
-
if (cmd->nwords < 2) {
printf("rm: expects a filename\n");
return 0;
return 0;
}
- result = fxp_rm(fname);
+ result = fxp_remove(fname);
if (!result) {
printf("rm %s: %s\n", fname, fxp_error());
sfree(fname);
return 0;
}
- sfree(fname);
+ sfree(fname);
+ return 0;
+
+}
+
+int sftp_cmd_mv(struct sftp_command *cmd)
+{
+ char *srcfname, *dstfname;
+ int result;
+
+ 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;
+ }
+
+ result = fxp_rename(srcfname, dstfname);
+ 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.
+ */
+ result = fxp_stat(dstfname, &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;
+ result = fxp_rename(srcfname, dstfname);
+ 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 0;
}
+int sftp_cmd_chmod(struct sftp_command *cmd)
+{
+ char *fname, *mode;
+ int result;
+ struct fxp_attrs attrs;
+ unsigned attrs_clr, attrs_xor, oldperms, newperms;
+
+ 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, *mode);
+ 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;
+ }
+
+ result = fxp_stat(fname, &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;
+
+ result = fxp_setstat(fname, attrs);
+
+ 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 0;
+}
static struct sftp_cmd_lookup {
char *name;
{
"bye", sftp_cmd_quit}, {
"cd", sftp_cmd_cd}, {
+ "chmod", sftp_cmd_chmod}, {
+ "del", sftp_cmd_rm}, {
+ "delete", sftp_cmd_rm}, {
"dir", sftp_cmd_ls}, {
"exit", sftp_cmd_quit}, {
"get", sftp_cmd_get}, {
"ls", sftp_cmd_ls}, {
"mkdir", sftp_cmd_mkdir}, {
+ "mv", sftp_cmd_mv}, {
"put", sftp_cmd_put}, {
- "quit", sftp_cmd_quit}, {
- "rm", sftp_cmd_rm}, {
- "rmdir", sftp_cmd_rmdir},};
+ "quit", sftp_cmd_quit}, {
+ "reget", sftp_cmd_reget}, {
+ "ren", sftp_cmd_mv}, {
+ "rename", sftp_cmd_mv}, {
+ "reput", sftp_cmd_reput}, {
+ "rm", sftp_cmd_rm}, {
+ "rmdir", sftp_cmd_rmdir},};
/* ----------------------------------------------------------------------
* Command line reading and parsing.
sftp_pkt_addstring_start(pkt);
sftp_pkt_addstring_str(pkt, data);
}
+static void sftp_pkt_addattrs(struct sftp_packet *pkt, struct fxp_attrs attrs)
+{
+ sftp_pkt_adduint32(pkt, attrs.flags);
+ if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) {
+ sftp_pkt_adduint32(pkt, attrs.size.hi);
+ sftp_pkt_adduint32(pkt, attrs.size.lo);
+ }
+ if (attrs.flags & SSH_FILEXFER_ATTR_UIDGID) {
+ sftp_pkt_adduint32(pkt, attrs.uid);
+ sftp_pkt_adduint32(pkt, attrs.gid);
+ }
+ if (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) {
+ sftp_pkt_adduint32(pkt, attrs.permissions);
+ }
+ if (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME) {
+ sftp_pkt_adduint32(pkt, attrs.atime);
+ sftp_pkt_adduint32(pkt, attrs.mtime);
+ }
+ if (attrs.flags & SSH_FILEXFER_ATTR_EXTENDED) {
+ /*
+ * We currently don't support sending any extended
+ * attributes.
+ */
+ }
+}
/* ----------------------------------------------------------------------
* SFTP packet decode functions.
pktout = sftp_pkt_init(SSH_FXP_MKDIR);
sftp_pkt_adduint32(pktout, 0x234); /* request id */
- sftp_pkt_addstring_start(pktout);
- sftp_pkt_addstring_data(pktout, path, strlen(path));
+ sftp_pkt_addstring(pktout, path);
sftp_pkt_adduint32(pktout, 0); /* (FIXME) empty ATTRS structure */
sftp_send(pktout);
pktin = sftp_recv();
pktout = sftp_pkt_init(SSH_FXP_RMDIR);
sftp_pkt_adduint32(pktout, 0x345); /* request id */
- sftp_pkt_addstring_start(pktout);
- sftp_pkt_addstring_data(pktout, path, strlen(path));
+ sftp_pkt_addstring(pktout, path);
sftp_send(pktout);
pktin = sftp_recv();
id = sftp_pkt_getuint32(pktin);
return 1;
}
-int fxp_rm(char *fname)
+int fxp_remove(char *fname)
{
struct sftp_packet *pktin, *pktout;
int id;
pktout = sftp_pkt_init(SSH_FXP_REMOVE);
sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring(pktout, fname);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ return 0;
+ }
+ id = fxp_got_status(pktin);
+ if (id != 1) {
+ return 0;
+ }
+ return 1;
+}
+
+int fxp_rename(char *srcfname, char *dstfname)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_RENAME);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring(pktout, srcfname);
+ sftp_pkt_addstring(pktout, dstfname);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ return 0;
+ }
+ id = fxp_got_status(pktin);
+ if (id != 1) {
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * Retrieve the attributes of a file. We have fxp_stat which works
+ * on filenames, and fxp_fstat which works on open file handles.
+ */
+int fxp_stat(char *fname, struct fxp_attrs *attrs)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_STAT);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring(pktout, fname);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ return 0;
+ }
+
+ if (pktin->type == SSH_FXP_ATTRS) {
+ *attrs = sftp_pkt_getattrs(pktin);
+ return 1;
+ } else {
+ fxp_got_status(pktin);
+ return 0;
+ }
+}
+
+int fxp_fstat(struct fxp_handle *handle, struct fxp_attrs *attrs)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_FSTAT);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
sftp_pkt_addstring_start(pktout);
- sftp_pkt_addstring_data(pktout, fname, strlen(fname));
+ sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ return 0;
+ }
+
+ if (pktin->type == SSH_FXP_ATTRS) {
+ *attrs = sftp_pkt_getattrs(pktin);
+ return 1;
+ } else {
+ fxp_got_status(pktin);
+ return 0;
+ }
+}
+
+/*
+ * Set the attributes of a file.
+ */
+int fxp_setstat(char *fname, struct fxp_attrs attrs)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_SETSTAT);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring(pktout, fname);
+ sftp_pkt_addattrs(pktout, attrs);
sftp_send(pktout);
pktin = sftp_recv();
id = sftp_pkt_getuint32(pktin);
projects / u / mdw / putty / commitdiff