X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/ee07dce4bc01900faf5c9b14e14803705e239b5d..56668e6dca80813a2c9f03d4c02ed20e22f1061b:/psftp.c diff --git a/psftp.c b/psftp.c index 5f91822d..33fbf086 100644 --- a/psftp.c +++ b/psftp.c @@ -37,6 +37,27 @@ char *pwd, *homedir; static Backend *back; static void *backhandle; static Conf *conf; +int sent_eof = FALSE; + +/* ---------------------------------------------------------------------- + * Manage sending requests and waiting for replies. + */ +struct sftp_packet *sftp_wait_for_reply(struct sftp_request *req) +{ + struct sftp_packet *pktin; + struct sftp_request *rreq; + + sftp_register(req); + pktin = sftp_recv(); + if (pktin == NULL) + connection_fatal(NULL, "did not receive SFTP response packet " + "from server"); + rreq = sftp_find_request(pktin); + if (rreq != req) + connection_fatal(NULL, "unable to understand SFTP response packet " + "from server: %s", fxp_error()); + return pktin; +} /* ---------------------------------------------------------------------- * Higher-level helper functions used in commands. @@ -51,7 +72,7 @@ char *canonify(char *name) { char *fullname, *canonname; struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; if (name[0] == '/') { fullname = dupstr(name); @@ -64,10 +85,9 @@ char *canonify(char *name) 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); + req = fxp_realpath_send(fullname); + pktin = sftp_wait_for_reply(req); + canonname = fxp_realpath_recv(pktin, req); if (canonname) { sfree(fullname); @@ -122,13 +142,12 @@ char *canonify(char *name) */ fullname[i] = '\0'; /* separate the string */ if (i == 0) { - sftp_register(req = fxp_realpath_send("/")); + req = fxp_realpath_send("/"); } else { - sftp_register(req = fxp_realpath_send(fullname)); + req = fxp_realpath_send(fullname); } - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - canonname = fxp_realpath_recv(pktin, rreq); + pktin = sftp_wait_for_reply(req); + canonname = fxp_realpath_recv(pktin, req); if (!canonname) { /* Even that failed. Restore our best guess at the @@ -207,7 +226,7 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) { struct fxp_handle *fh; struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; struct fxp_xfer *xfer; uint64 offset; WFile *file; @@ -222,10 +241,9 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) if (recurse) { int result; - sftp_register(req = fxp_stat_send(fname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_stat_recv(pktin, rreq, &attrs); + req = fxp_stat_send(fname); + pktin = sftp_wait_for_reply(req); + result = fxp_stat_recv(pktin, req, &attrs); if (result && (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) && @@ -251,10 +269,9 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) * Now get the list of filenames in the remote * directory. */ - sftp_register(req = fxp_opendir_send(fname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - dirhandle = fxp_opendir_recv(pktin, rreq); + req = fxp_opendir_send(fname); + pktin = sftp_wait_for_reply(req); + dirhandle = fxp_opendir_recv(pktin, req); if (!dirhandle) { printf("%s: unable to open directory: %s\n", @@ -266,10 +283,9 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) while (1) { int i; - sftp_register(req = fxp_readdir_send(dirhandle)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - names = fxp_readdir_recv(pktin, rreq); + req = fxp_readdir_send(dirhandle); + pktin = sftp_wait_for_reply(req); + names = fxp_readdir_recv(pktin, req); if (names == NULL) { if (fxp_error_type() == SSH_FX_EOF) @@ -300,10 +316,9 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) } fxp_free_names(names); } - sftp_register(req = fxp_close_send(dirhandle)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); + req = fxp_close_send(dirhandle); + pktin = sftp_wait_for_reply(req); + fxp_close_recv(pktin, req); /* * Sort the names into a clear order. This ought to @@ -383,16 +398,14 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) } } - sftp_register(req = fxp_stat_send(fname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - if (!fxp_stat_recv(pktin, rreq, &attrs)) + req = fxp_stat_send(fname); + pktin = sftp_wait_for_reply(req); + if (!fxp_stat_recv(pktin, req, &attrs)) attrs.flags = 0; - sftp_register(req = fxp_open_send(fname, SSH_FXF_READ, NULL)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fh = fxp_open_recv(pktin, rreq); + req = fxp_open_send(fname, SSH_FXF_READ, NULL); + pktin = sftp_wait_for_reply(req); + fh = fxp_open_recv(pktin, req); if (!fh) { printf("%s: open for read: %s\n", fname, fxp_error()); @@ -408,10 +421,9 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) if (!file) { printf("local: unable to open %s\n", outfname); - sftp_register(req = fxp_close_send(fh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); + req = fxp_close_send(fh); + pktin = sftp_wait_for_reply(req); + fxp_close_recv(pktin, req); return 0; } @@ -422,10 +434,9 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) close_wfile(file); printf("reget: cannot restart %s - file too large\n", outfname); - sftp_register(req = fxp_close_send(fh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); + req = fxp_close_send(fh); + pktin = sftp_wait_for_reply(req); + fxp_close_recv(pktin, req); return 0; } @@ -453,8 +464,7 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) xfer_download_queue(xfer); pktin = sftp_recv(); ret = xfer_download_gotpkt(xfer, pktin); - - if (ret < 0) { + if (ret <= 0) { if (!shown_err) { printf("error while reading: %s\n", fxp_error()); shown_err = TRUE; @@ -489,10 +499,9 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart) close_wfile(file); - sftp_register(req = fxp_close_send(fh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); + req = fxp_close_send(fh); + pktin = sftp_wait_for_reply(req); + fxp_close_recv(pktin, req); return ret; } @@ -502,7 +511,7 @@ int sftp_put_file(char *fname, char *outfname, int recurse, int restart) struct fxp_handle *fh; struct fxp_xfer *xfer; struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; uint64 offset; RFile *file; int ret, err, eof; @@ -525,17 +534,15 @@ int sftp_put_file(char *fname, char *outfname, int recurse, int restart) * First, attempt to create the destination directory, * unless it already exists. */ - sftp_register(req = fxp_stat_send(outfname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_stat_recv(pktin, rreq, &attrs); + req = fxp_stat_send(outfname); + pktin = sftp_wait_for_reply(req); + result = fxp_stat_recv(pktin, req, &attrs); if (!result || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) || !(attrs.permissions & 0040000)) { - sftp_register(req = fxp_mkdir_send(outfname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_mkdir_recv(pktin, rreq); + req = fxp_mkdir_send(outfname); + pktin = sftp_wait_for_reply(req); + result = fxp_mkdir_recv(pktin, req); if (!result) { printf("%s: create directory: %s\n", @@ -585,10 +592,9 @@ int sftp_put_file(char *fname, char *outfname, int recurse, int restart) while (i < nnames) { char *nextoutfname; nextoutfname = dupcat(outfname, "/", ournames[i], NULL); - sftp_register(req = fxp_stat_send(nextoutfname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_stat_recv(pktin, rreq, &attrs); + req = fxp_stat_send(nextoutfname); + pktin = sftp_wait_for_reply(req); + result = fxp_stat_recv(pktin, req, &attrs); sfree(nextoutfname); if (!result) break; @@ -645,15 +651,14 @@ int sftp_put_file(char *fname, char *outfname, int recurse, int restart) attrs.flags = 0; PUT_PERMISSIONS(attrs, permissions); if (restart) { - sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE, &attrs)); + req = fxp_open_send(outfname, SSH_FXF_WRITE, &attrs); } else { - sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE | - SSH_FXF_CREAT | SSH_FXF_TRUNC, - &attrs)); + req = fxp_open_send(outfname, + SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC, + &attrs); } - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fh = fxp_open_recv(pktin, rreq); + pktin = sftp_wait_for_reply(req); + fh = fxp_open_recv(pktin, req); if (!fh) { close_rfile(file); @@ -666,10 +671,9 @@ int sftp_put_file(char *fname, char *outfname, int recurse, int restart) 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); + req = fxp_fstat_send(fh); + pktin = sftp_wait_for_reply(req); + ret = fxp_fstat_recv(pktin, req, &attrs); if (!ret) { close_rfile(file); @@ -728,10 +732,9 @@ int sftp_put_file(char *fname, char *outfname, int recurse, int restart) xfer_cleanup(xfer); - sftp_register(req = fxp_close_send(fh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); + req = fxp_close_send(fh); + pktin = sftp_wait_for_reply(req); + fxp_close_recv(pktin, req); close_rfile(file); @@ -753,7 +756,7 @@ typedef struct SftpWildcardMatcher { SftpWildcardMatcher *sftp_begin_wildcard_matching(char *name) { struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; char *wildcard; char *unwcdir, *tmpdir, *cdir; int len, check; @@ -784,10 +787,9 @@ SftpWildcardMatcher *sftp_begin_wildcard_matching(char *name) cdir = canonify(unwcdir); - sftp_register(req = fxp_opendir_send(cdir)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - dirh = fxp_opendir_recv(pktin, rreq); + req = fxp_opendir_send(cdir); + pktin = sftp_wait_for_reply(req); + dirh = fxp_opendir_recv(pktin, req); if (dirh) { swcm = snew(SftpWildcardMatcher); @@ -810,7 +812,7 @@ char *sftp_wildcard_get_filename(SftpWildcardMatcher *swcm) { struct fxp_name *name; struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; while (1) { if (swcm->names && swcm->namepos >= swcm->names->nnames) { @@ -819,17 +821,26 @@ char *sftp_wildcard_get_filename(SftpWildcardMatcher *swcm) } if (!swcm->names) { - sftp_register(req = fxp_readdir_send(swcm->dirh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - swcm->names = fxp_readdir_recv(pktin, rreq); + req = fxp_readdir_send(swcm->dirh); + pktin = sftp_wait_for_reply(req); + swcm->names = fxp_readdir_recv(pktin, req); if (!swcm->names) { if (fxp_error_type() != SSH_FX_EOF) printf("%s: reading directory: %s\n", swcm->prefix, fxp_error()); return NULL; - } + } else if (swcm->names->nnames == 0) { + /* + * Another failure mode which we treat as EOF is if + * the server reports success from FXP_READDIR but + * returns no actual names. This is unusual, since + * from most servers you'd expect at least "." and + * "..", but there's nothing forbidding a server from + * omitting those if it wants to. + */ + return NULL; + } swcm->namepos = 0; } @@ -864,12 +875,11 @@ char *sftp_wildcard_get_filename(SftpWildcardMatcher *swcm) void sftp_finish_wildcard_matching(SftpWildcardMatcher *swcm) { struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; - sftp_register(req = fxp_close_send(swcm->dirh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); + req = fxp_close_send(swcm->dirh); + pktin = sftp_wait_for_reply(req); + fxp_close_recv(pktin, req); if (swcm->names) fxp_free_names(swcm->names); @@ -980,6 +990,7 @@ int sftp_cmd_close(struct sftp_command *cmd) if (back != NULL && back->connected(backhandle)) { char ch; back->special(backhandle, TS_EOF); + sent_eof = TRUE; sftp_recvdata(&ch, 1); } do_sftp_cleanup(); @@ -999,7 +1010,7 @@ int sftp_cmd_ls(struct sftp_command *cmd) int nnames, namesize; char *dir, *cdir, *unwcdir, *wildcard; struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; int i; if (back == NULL) { @@ -1046,10 +1057,9 @@ int sftp_cmd_ls(struct sftp_command *cmd) printf("Listing directory %s\n", cdir); - sftp_register(req = fxp_opendir_send(cdir)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - dirh = fxp_opendir_recv(pktin, rreq); + req = fxp_opendir_send(cdir); + pktin = sftp_wait_for_reply(req); + dirh = fxp_opendir_recv(pktin, req); if (dirh == NULL) { printf("Unable to open %s: %s\n", dir, fxp_error()); @@ -1059,10 +1069,9 @@ int sftp_cmd_ls(struct sftp_command *cmd) while (1) { - sftp_register(req = fxp_readdir_send(dirh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - names = fxp_readdir_recv(pktin, rreq); + req = fxp_readdir_send(dirh); + pktin = sftp_wait_for_reply(req); + names = fxp_readdir_recv(pktin, req); if (names == NULL) { if (fxp_error_type() == SSH_FX_EOF) @@ -1086,10 +1095,9 @@ int sftp_cmd_ls(struct sftp_command *cmd) fxp_free_names(names); } - sftp_register(req = fxp_close_send(dirh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); + req = fxp_close_send(dirh); + pktin = sftp_wait_for_reply(req); + fxp_close_recv(pktin, req); /* * Now we have our filenames. Sort them by actual file @@ -1121,7 +1129,7 @@ int sftp_cmd_cd(struct sftp_command *cmd) { struct fxp_handle *dirh; struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; char *dir; if (back == NULL) { @@ -1139,10 +1147,9 @@ int sftp_cmd_cd(struct sftp_command *cmd) return 0; } - sftp_register(req = fxp_opendir_send(dir)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - dirh = fxp_opendir_recv(pktin, rreq); + req = fxp_opendir_send(dir); + pktin = sftp_wait_for_reply(req); + dirh = fxp_opendir_recv(pktin, req); if (!dirh) { printf("Directory %s: %s\n", dir, fxp_error()); @@ -1150,10 +1157,9 @@ int sftp_cmd_cd(struct sftp_command *cmd) return 0; } - sftp_register(req = fxp_close_send(dirh)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - fxp_close_recv(pktin, rreq); + req = fxp_close_send(dirh); + pktin = sftp_wait_for_reply(req); + fxp_close_recv(pktin, req); sfree(pwd); pwd = dir; @@ -1402,7 +1408,7 @@ int sftp_cmd_mkdir(struct sftp_command *cmd) { char *dir; struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; int result; int i, ret; @@ -1424,10 +1430,9 @@ int sftp_cmd_mkdir(struct sftp_command *cmd) 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); + req = fxp_mkdir_send(dir); + pktin = sftp_wait_for_reply(req); + result = fxp_mkdir_recv(pktin, req); if (!result) { printf("mkdir %s: %s\n", dir, fxp_error()); @@ -1444,13 +1449,12 @@ int sftp_cmd_mkdir(struct sftp_command *cmd) static int sftp_action_rmdir(void *vctx, char *dir) { struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; int result; - sftp_register(req = fxp_rmdir_send(dir)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_rmdir_recv(pktin, rreq); + req = fxp_rmdir_send(dir); + pktin = sftp_wait_for_reply(req); + result = fxp_rmdir_recv(pktin, req); if (!result) { printf("rmdir %s: %s\n", dir, fxp_error()); @@ -1486,13 +1490,12 @@ int sftp_cmd_rmdir(struct sftp_command *cmd) static int sftp_action_rm(void *vctx, char *fname) { struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; int result; - sftp_register(req = fxp_remove_send(fname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_remove_recv(pktin, rreq); + req = fxp_remove_send(fname); + pktin = sftp_wait_for_reply(req); + result = fxp_remove_recv(pktin, req); if (!result) { printf("rm %s: %s\n", fname, fxp_error()); @@ -1528,14 +1531,13 @@ int sftp_cmd_rm(struct sftp_command *cmd) static int check_is_dir(char *dstfname) { struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; struct fxp_attrs attrs; int result; - sftp_register(req = fxp_stat_send(dstfname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_stat_recv(pktin, rreq, &attrs); + req = fxp_stat_send(dstfname); + pktin = sftp_wait_for_reply(req); + result = fxp_stat_recv(pktin, req, &attrs); if (result && (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) && @@ -1554,7 +1556,7 @@ static int sftp_action_mv(void *vctx, char *srcfname) { struct sftp_context_mv *ctx = (struct sftp_context_mv *)vctx; struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; const char *error; char *finalfname, *newcanon = NULL; int ret, result; @@ -1579,10 +1581,9 @@ static int sftp_action_mv(void *vctx, char *srcfname) finalfname = ctx->dstfname; } - sftp_register(req = fxp_rename_send(srcfname, finalfname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_rename_recv(pktin, rreq); + req = fxp_rename_send(srcfname, finalfname); + pktin = sftp_wait_for_reply(req); + result = fxp_rename_recv(pktin, req); error = result ? NULL : fxp_error(); @@ -1651,15 +1652,14 @@ static int sftp_action_chmod(void *vctx, char *fname) { struct fxp_attrs attrs; struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; int result; unsigned oldperms, newperms; struct sftp_context_chmod *ctx = (struct sftp_context_chmod *)vctx; - sftp_register(req = fxp_stat_send(fname)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_stat_recv(pktin, rreq, &attrs); + req = fxp_stat_send(fname); + pktin = sftp_wait_for_reply(req); + result = fxp_stat_recv(pktin, req, &attrs); if (!result || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) { printf("get attrs for %s: %s\n", fname, @@ -1676,10 +1676,9 @@ static int sftp_action_chmod(void *vctx, char *fname) if (oldperms == newperms) return 1; /* no need to do anything! */ - sftp_register(req = fxp_setstat_send(fname, attrs)); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - result = fxp_setstat_recv(pktin, rreq); + req = fxp_setstat_send(fname, attrs); + pktin = sftp_wait_for_reply(req); + result = fxp_setstat_recv(pktin, req); if (!result) { printf("set attrs for %s: %s\n", fname, fxp_error()); @@ -2275,10 +2274,13 @@ struct sftp_command *sftp_getcmd(FILE *fp, int mode, int modeflags) * >this has "quotes" in< * >and"this"< */ - while (*p) { + while (1) { /* skip whitespace */ while (*p && (*p == ' ' || *p == '\t')) p++; + /* terminate loop */ + if (!*p) + break; /* mark start of word */ q = r = p; /* q sits at start, r writes word */ quoting = 0; @@ -2326,7 +2328,7 @@ struct sftp_command *sftp_getcmd(FILE *fp, int mode, int modeflags) static int do_sftp_init(void) { struct sftp_packet *pktin; - struct sftp_request *req, *rreq; + struct sftp_request *req; /* * Do protocol initialisation. @@ -2340,10 +2342,9 @@ static int do_sftp_init(void) /* * Find out where our home directory is. */ - sftp_register(req = fxp_realpath_send(".")); - rreq = sftp_find_request(pktin = sftp_recv()); - assert(rreq == req); - homedir = fxp_realpath_recv(pktin, rreq); + req = fxp_realpath_send("."); + pktin = sftp_wait_for_reply(req); + homedir = fxp_realpath_recv(pktin, req); if (!homedir) { fprintf(stderr, @@ -2362,6 +2363,7 @@ void do_sftp_cleanup() char ch; if (back) { back->special(backhandle, TS_EOF); + sent_eof = TRUE; sftp_recvdata(&ch, 1); back->free(backhandle); sftp_cleanup_request(); @@ -2570,6 +2572,19 @@ int from_backend_untrusted(void *frontend_handle, const char *data, int len) assert(!"Unexpected call to from_backend_untrusted()"); return 0; /* not reached */ } +int from_backend_eof(void *frontend) +{ + /* + * We expect to be the party deciding when to close the + * connection, so if we see EOF before we sent it ourselves, we + * should panic. + */ + if (!sent_eof) { + connection_fatal(frontend, + "Received unexpected end-of-file from SFTP server"); + } + return FALSE; +} int sftp_recvdata(char *buf, int len) { outptr = (unsigned char *) buf; @@ -2894,12 +2909,14 @@ int psftp_main(int argc, char *argv[]) if (flags & FLAG_VERBOSE) verbose = 1; } else if (strcmp(argv[i], "-h") == 0 || - strcmp(argv[i], "-?") == 0) { + strcmp(argv[i], "-?") == 0 || + strcmp(argv[i], "--help") == 0) { usage(); } else if (strcmp(argv[i], "-pgpfp") == 0) { pgp_fingerprints(); return 1; - } else if (strcmp(argv[i], "-V") == 0) { + } else if (strcmp(argv[i], "-V") == 0 || + strcmp(argv[i], "--version") == 0) { version(); } else if (strcmp(argv[i], "-batch") == 0) { console_batch_mode = 1; @@ -2952,6 +2969,7 @@ int psftp_main(int argc, char *argv[]) if (back != NULL && back->connected(backhandle)) { char ch; back->special(backhandle, TS_EOF); + sent_eof = TRUE; sftp_recvdata(&ch, 1); } do_sftp_cleanup();