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-rw-r--r--sftp.c2613
1 files changed, 2613 insertions, 0 deletions
diff --git a/sftp.c b/sftp.c
new file mode 100644
index 0000000..c88c861
--- /dev/null
+++ b/sftp.c
@@ -0,0 +1,2613 @@
+/* $OpenBSD: sftp.c,v 1.201 2020/08/03 02:43:41 djm Exp $ */
+/*
+ * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "includes.h"
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#ifdef HAVE_SYS_STATVFS_H
+#include <sys/statvfs.h>
+#endif
+
+#include <ctype.h>
+#include <errno.h>
+
+#ifdef HAVE_PATHS_H
+# include <paths.h>
+#endif
+#ifdef HAVE_LIBGEN_H
+#include <libgen.h>
+#endif
+#ifdef HAVE_LOCALE_H
+# include <locale.h>
+#endif
+#ifdef USE_LIBEDIT
+#include <histedit.h>
+#else
+typedef void EditLine;
+#endif
+#include <limits.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef HAVE_UTIL_H
+# include <util.h>
+#endif
+
+#include "xmalloc.h"
+#include "log.h"
+#include "pathnames.h"
+#include "misc.h"
+#include "utf8.h"
+
+#include "sftp.h"
+#include "ssherr.h"
+#include "sshbuf.h"
+#include "sftp-common.h"
+#include "sftp-client.h"
+
+#define DEFAULT_COPY_BUFLEN 32768 /* Size of buffer for up/download */
+#define DEFAULT_NUM_REQUESTS 64 /* # concurrent outstanding requests */
+
+/* File to read commands from */
+FILE* infile;
+
+/* Are we in batchfile mode? */
+int batchmode = 0;
+
+/* PID of ssh transport process */
+static volatile pid_t sshpid = -1;
+
+/* Suppress diagnositic messages */
+int quiet = 0;
+
+/* This is set to 0 if the progressmeter is not desired. */
+int showprogress = 1;
+
+/* When this option is set, we always recursively download/upload directories */
+int global_rflag = 0;
+
+/* When this option is set, we resume download or upload if possible */
+int global_aflag = 0;
+
+/* When this option is set, the file transfers will always preserve times */
+int global_pflag = 0;
+
+/* When this option is set, transfers will have fsync() called on each file */
+int global_fflag = 0;
+
+/* SIGINT received during command processing */
+volatile sig_atomic_t interrupted = 0;
+
+/* I wish qsort() took a separate ctx for the comparison function...*/
+int sort_flag;
+glob_t *sort_glob;
+
+/* Context used for commandline completion */
+struct complete_ctx {
+ struct sftp_conn *conn;
+ char **remote_pathp;
+};
+
+int remote_glob(struct sftp_conn *, const char *, int,
+ int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */
+
+extern char *__progname;
+
+/* Separators for interactive commands */
+#define WHITESPACE " \t\r\n"
+
+/* ls flags */
+#define LS_LONG_VIEW 0x0001 /* Full view ala ls -l */
+#define LS_SHORT_VIEW 0x0002 /* Single row view ala ls -1 */
+#define LS_NUMERIC_VIEW 0x0004 /* Long view with numeric uid/gid */
+#define LS_NAME_SORT 0x0008 /* Sort by name (default) */
+#define LS_TIME_SORT 0x0010 /* Sort by mtime */
+#define LS_SIZE_SORT 0x0020 /* Sort by file size */
+#define LS_REVERSE_SORT 0x0040 /* Reverse sort order */
+#define LS_SHOW_ALL 0x0080 /* Don't skip filenames starting with '.' */
+#define LS_SI_UNITS 0x0100 /* Display sizes as K, M, G, etc. */
+
+#define VIEW_FLAGS (LS_LONG_VIEW|LS_SHORT_VIEW|LS_NUMERIC_VIEW|LS_SI_UNITS)
+#define SORT_FLAGS (LS_NAME_SORT|LS_TIME_SORT|LS_SIZE_SORT)
+
+/* Commands for interactive mode */
+enum sftp_command {
+ I_CHDIR = 1,
+ I_CHGRP,
+ I_CHMOD,
+ I_CHOWN,
+ I_DF,
+ I_GET,
+ I_HELP,
+ I_LCHDIR,
+ I_LINK,
+ I_LLS,
+ I_LMKDIR,
+ I_LPWD,
+ I_LS,
+ I_LUMASK,
+ I_MKDIR,
+ I_PUT,
+ I_PWD,
+ I_QUIT,
+ I_REGET,
+ I_RENAME,
+ I_REPUT,
+ I_RM,
+ I_RMDIR,
+ I_SHELL,
+ I_SYMLINK,
+ I_VERSION,
+ I_PROGRESS,
+};
+
+struct CMD {
+ const char *c;
+ const int n;
+ const int t;
+};
+
+/* Type of completion */
+#define NOARGS 0
+#define REMOTE 1
+#define LOCAL 2
+
+static const struct CMD cmds[] = {
+ { "bye", I_QUIT, NOARGS },
+ { "cd", I_CHDIR, REMOTE },
+ { "chdir", I_CHDIR, REMOTE },
+ { "chgrp", I_CHGRP, REMOTE },
+ { "chmod", I_CHMOD, REMOTE },
+ { "chown", I_CHOWN, REMOTE },
+ { "df", I_DF, REMOTE },
+ { "dir", I_LS, REMOTE },
+ { "exit", I_QUIT, NOARGS },
+ { "get", I_GET, REMOTE },
+ { "help", I_HELP, NOARGS },
+ { "lcd", I_LCHDIR, LOCAL },
+ { "lchdir", I_LCHDIR, LOCAL },
+ { "lls", I_LLS, LOCAL },
+ { "lmkdir", I_LMKDIR, LOCAL },
+ { "ln", I_LINK, REMOTE },
+ { "lpwd", I_LPWD, LOCAL },
+ { "ls", I_LS, REMOTE },
+ { "lumask", I_LUMASK, NOARGS },
+ { "mkdir", I_MKDIR, REMOTE },
+ { "mget", I_GET, REMOTE },
+ { "mput", I_PUT, LOCAL },
+ { "progress", I_PROGRESS, NOARGS },
+ { "put", I_PUT, LOCAL },
+ { "pwd", I_PWD, REMOTE },
+ { "quit", I_QUIT, NOARGS },
+ { "reget", I_REGET, REMOTE },
+ { "rename", I_RENAME, REMOTE },
+ { "reput", I_REPUT, LOCAL },
+ { "rm", I_RM, REMOTE },
+ { "rmdir", I_RMDIR, REMOTE },
+ { "symlink", I_SYMLINK, REMOTE },
+ { "version", I_VERSION, NOARGS },
+ { "!", I_SHELL, NOARGS },
+ { "?", I_HELP, NOARGS },
+ { NULL, -1, -1 }
+};
+
+/* ARGSUSED */
+static void
+killchild(int signo)
+{
+ pid_t pid;
+
+ pid = sshpid;
+ if (pid > 1) {
+ kill(pid, SIGTERM);
+ waitpid(pid, NULL, 0);
+ }
+
+ _exit(1);
+}
+
+/* ARGSUSED */
+static void
+suspchild(int signo)
+{
+ if (sshpid > 1) {
+ kill(sshpid, signo);
+ while (waitpid(sshpid, NULL, WUNTRACED) == -1 && errno == EINTR)
+ continue;
+ }
+ kill(getpid(), SIGSTOP);
+}
+
+/* ARGSUSED */
+static void
+cmd_interrupt(int signo)
+{
+ const char msg[] = "\rInterrupt \n";
+ int olderrno = errno;
+
+ (void)write(STDERR_FILENO, msg, sizeof(msg) - 1);
+ interrupted = 1;
+ errno = olderrno;
+}
+
+/*ARGSUSED*/
+static void
+sigchld_handler(int sig)
+{
+ int save_errno = errno;
+ pid_t pid;
+ const char msg[] = "\rConnection closed. \n";
+
+ /* Report if ssh transport process dies. */
+ while ((pid = waitpid(sshpid, NULL, WNOHANG)) == -1 && errno == EINTR)
+ continue;
+ if (pid == sshpid) {
+ (void)write(STDERR_FILENO, msg, sizeof(msg) - 1);
+ sshpid = -1;
+ }
+
+ errno = save_errno;
+}
+
+static void
+help(void)
+{
+ printf("Available commands:\n"
+ "bye Quit sftp\n"
+ "cd path Change remote directory to 'path'\n"
+ "chgrp [-h] grp path Change group of file 'path' to 'grp'\n"
+ "chmod [-h] mode path Change permissions of file 'path' to 'mode'\n"
+ "chown [-h] own path Change owner of file 'path' to 'own'\n"
+ "df [-hi] [path] Display statistics for current directory or\n"
+ " filesystem containing 'path'\n"
+ "exit Quit sftp\n"
+ "get [-afpR] remote [local] Download file\n"
+ "help Display this help text\n"
+ "lcd path Change local directory to 'path'\n"
+ "lls [ls-options [path]] Display local directory listing\n"
+ "lmkdir path Create local directory\n"
+ "ln [-s] oldpath newpath Link remote file (-s for symlink)\n"
+ "lpwd Print local working directory\n"
+ "ls [-1afhlnrSt] [path] Display remote directory listing\n"
+ "lumask umask Set local umask to 'umask'\n"
+ "mkdir path Create remote directory\n"
+ "progress Toggle display of progress meter\n"
+ "put [-afpR] local [remote] Upload file\n"
+ "pwd Display remote working directory\n"
+ "quit Quit sftp\n"
+ "reget [-fpR] remote [local] Resume download file\n"
+ "rename oldpath newpath Rename remote file\n"
+ "reput [-fpR] local [remote] Resume upload file\n"
+ "rm path Delete remote file\n"
+ "rmdir path Remove remote directory\n"
+ "symlink oldpath newpath Symlink remote file\n"
+ "version Show SFTP version\n"
+ "!command Execute 'command' in local shell\n"
+ "! Escape to local shell\n"
+ "? Synonym for help\n");
+}
+
+static void
+local_do_shell(const char *args)
+{
+ int status;
+ char *shell;
+ pid_t pid;
+
+ if (!*args)
+ args = NULL;
+
+ if ((shell = getenv("SHELL")) == NULL || *shell == '\0')
+ shell = _PATH_BSHELL;
+
+ if ((pid = fork()) == -1)
+ fatal("Couldn't fork: %s", strerror(errno));
+
+ if (pid == 0) {
+ /* XXX: child has pipe fds to ssh subproc open - issue? */
+ if (args) {
+ debug3("Executing %s -c \"%s\"", shell, args);
+ execl(shell, shell, "-c", args, (char *)NULL);
+ } else {
+ debug3("Executing %s", shell);
+ execl(shell, shell, (char *)NULL);
+ }
+ fprintf(stderr, "Couldn't execute \"%s\": %s\n", shell,
+ strerror(errno));
+ _exit(1);
+ }
+ while (waitpid(pid, &status, 0) == -1)
+ if (errno != EINTR)
+ fatal("Couldn't wait for child: %s", strerror(errno));
+ if (!WIFEXITED(status))
+ error("Shell exited abnormally");
+ else if (WEXITSTATUS(status))
+ error("Shell exited with status %d", WEXITSTATUS(status));
+}
+
+static void
+local_do_ls(const char *args)
+{
+ if (!args || !*args)
+ local_do_shell(_PATH_LS);
+ else {
+ int len = strlen(_PATH_LS " ") + strlen(args) + 1;
+ char *buf = xmalloc(len);
+
+ /* XXX: quoting - rip quoting code from ftp? */
+ snprintf(buf, len, _PATH_LS " %s", args);
+ local_do_shell(buf);
+ free(buf);
+ }
+}
+
+/* Strip one path (usually the pwd) from the start of another */
+static char *
+path_strip(const char *path, const char *strip)
+{
+ size_t len;
+
+ if (strip == NULL)
+ return (xstrdup(path));
+
+ len = strlen(strip);
+ if (strncmp(path, strip, len) == 0) {
+ if (strip[len - 1] != '/' && path[len] == '/')
+ len++;
+ return (xstrdup(path + len));
+ }
+
+ return (xstrdup(path));
+}
+
+static char *
+make_absolute(char *p, const char *pwd)
+{
+ char *abs_str;
+
+ /* Derelativise */
+ if (p && !path_absolute(p)) {
+ abs_str = path_append(pwd, p);
+ free(p);
+ return(abs_str);
+ } else
+ return(p);
+}
+
+static int
+parse_getput_flags(const char *cmd, char **argv, int argc,
+ int *aflag, int *fflag, int *pflag, int *rflag)
+{
+ extern int opterr, optind, optopt, optreset;
+ int ch;
+
+ optind = optreset = 1;
+ opterr = 0;
+
+ *aflag = *fflag = *rflag = *pflag = 0;
+ while ((ch = getopt(argc, argv, "afPpRr")) != -1) {
+ switch (ch) {
+ case 'a':
+ *aflag = 1;
+ break;
+ case 'f':
+ *fflag = 1;
+ break;
+ case 'p':
+ case 'P':
+ *pflag = 1;
+ break;
+ case 'r':
+ case 'R':
+ *rflag = 1;
+ break;
+ default:
+ error("%s: Invalid flag -%c", cmd, optopt);
+ return -1;
+ }
+ }
+
+ return optind;
+}
+
+static int
+parse_link_flags(const char *cmd, char **argv, int argc, int *sflag)
+{
+ extern int opterr, optind, optopt, optreset;
+ int ch;
+
+ optind = optreset = 1;
+ opterr = 0;
+
+ *sflag = 0;
+ while ((ch = getopt(argc, argv, "s")) != -1) {
+ switch (ch) {
+ case 's':
+ *sflag = 1;
+ break;
+ default:
+ error("%s: Invalid flag -%c", cmd, optopt);
+ return -1;
+ }
+ }
+
+ return optind;
+}
+
+static int
+parse_rename_flags(const char *cmd, char **argv, int argc, int *lflag)
+{
+ extern int opterr, optind, optopt, optreset;
+ int ch;
+
+ optind = optreset = 1;
+ opterr = 0;
+
+ *lflag = 0;
+ while ((ch = getopt(argc, argv, "l")) != -1) {
+ switch (ch) {
+ case 'l':
+ *lflag = 1;
+ break;
+ default:
+ error("%s: Invalid flag -%c", cmd, optopt);
+ return -1;
+ }
+ }
+
+ return optind;
+}
+
+static int
+parse_ls_flags(char **argv, int argc, int *lflag)
+{
+ extern int opterr, optind, optopt, optreset;
+ int ch;
+
+ optind = optreset = 1;
+ opterr = 0;
+
+ *lflag = LS_NAME_SORT;
+ while ((ch = getopt(argc, argv, "1Safhlnrt")) != -1) {
+ switch (ch) {
+ case '1':
+ *lflag &= ~VIEW_FLAGS;
+ *lflag |= LS_SHORT_VIEW;
+ break;
+ case 'S':
+ *lflag &= ~SORT_FLAGS;
+ *lflag |= LS_SIZE_SORT;
+ break;
+ case 'a':
+ *lflag |= LS_SHOW_ALL;
+ break;
+ case 'f':
+ *lflag &= ~SORT_FLAGS;
+ break;
+ case 'h':
+ *lflag |= LS_SI_UNITS;
+ break;
+ case 'l':
+ *lflag &= ~LS_SHORT_VIEW;
+ *lflag |= LS_LONG_VIEW;
+ break;
+ case 'n':
+ *lflag &= ~LS_SHORT_VIEW;
+ *lflag |= LS_NUMERIC_VIEW|LS_LONG_VIEW;
+ break;
+ case 'r':
+ *lflag |= LS_REVERSE_SORT;
+ break;
+ case 't':
+ *lflag &= ~SORT_FLAGS;
+ *lflag |= LS_TIME_SORT;
+ break;
+ default:
+ error("ls: Invalid flag -%c", optopt);
+ return -1;
+ }
+ }
+
+ return optind;
+}
+
+static int
+parse_df_flags(const char *cmd, char **argv, int argc, int *hflag, int *iflag)
+{
+ extern int opterr, optind, optopt, optreset;
+ int ch;
+
+ optind = optreset = 1;
+ opterr = 0;
+
+ *hflag = *iflag = 0;
+ while ((ch = getopt(argc, argv, "hi")) != -1) {
+ switch (ch) {
+ case 'h':
+ *hflag = 1;
+ break;
+ case 'i':
+ *iflag = 1;
+ break;
+ default:
+ error("%s: Invalid flag -%c", cmd, optopt);
+ return -1;
+ }
+ }
+
+ return optind;
+}
+
+static int
+parse_ch_flags(const char *cmd, char **argv, int argc, int *hflag)
+{
+ extern int opterr, optind, optopt, optreset;
+ int ch;
+
+ optind = optreset = 1;
+ opterr = 0;
+
+ *hflag = 0;
+ while ((ch = getopt(argc, argv, "h")) != -1) {
+ switch (ch) {
+ case 'h':
+ *hflag = 1;
+ break;
+ default:
+ error("%s: Invalid flag -%c", cmd, optopt);
+ return -1;
+ }
+ }
+
+ return optind;
+}
+
+static int
+parse_no_flags(const char *cmd, char **argv, int argc)
+{
+ extern int opterr, optind, optopt, optreset;
+ int ch;
+
+ optind = optreset = 1;
+ opterr = 0;
+
+ while ((ch = getopt(argc, argv, "")) != -1) {
+ switch (ch) {
+ default:
+ error("%s: Invalid flag -%c", cmd, optopt);
+ return -1;
+ }
+ }
+
+ return optind;
+}
+
+static int
+is_dir(const char *path)
+{
+ struct stat sb;
+
+ /* XXX: report errors? */
+ if (stat(path, &sb) == -1)
+ return(0);
+
+ return(S_ISDIR(sb.st_mode));
+}
+
+static int
+remote_is_dir(struct sftp_conn *conn, const char *path)
+{
+ Attrib *a;
+
+ /* XXX: report errors? */
+ if ((a = do_stat(conn, path, 1)) == NULL)
+ return(0);
+ if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS))
+ return(0);
+ return(S_ISDIR(a->perm));
+}
+
+/* Check whether path returned from glob(..., GLOB_MARK, ...) is a directory */
+static int
+pathname_is_dir(const char *pathname)
+{
+ size_t l = strlen(pathname);
+
+ return l > 0 && pathname[l - 1] == '/';
+}
+
+static int
+process_get(struct sftp_conn *conn, const char *src, const char *dst,
+ const char *pwd, int pflag, int rflag, int resume, int fflag)
+{
+ char *abs_src = NULL;
+ char *abs_dst = NULL;
+ glob_t g;
+ char *filename, *tmp=NULL;
+ int i, r, err = 0;
+
+ abs_src = xstrdup(src);
+ abs_src = make_absolute(abs_src, pwd);
+ memset(&g, 0, sizeof(g));
+
+ debug3("Looking up %s", abs_src);
+ if ((r = remote_glob(conn, abs_src, GLOB_MARK, NULL, &g)) != 0) {
+ if (r == GLOB_NOSPACE) {
+ error("Too many matches for \"%s\".", abs_src);
+ } else {
+ error("File \"%s\" not found.", abs_src);
+ }
+ err = -1;
+ goto out;
+ }
+
+ /*
+ * If multiple matches then dst must be a directory or
+ * unspecified.
+ */
+ if (g.gl_matchc > 1 && dst != NULL && !is_dir(dst)) {
+ error("Multiple source paths, but destination "
+ "\"%s\" is not a directory", dst);
+ err = -1;
+ goto out;
+ }
+
+ for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
+ tmp = xstrdup(g.gl_pathv[i]);
+ if ((filename = basename(tmp)) == NULL) {
+ error("basename %s: %s", tmp, strerror(errno));
+ free(tmp);
+ err = -1;
+ goto out;
+ }
+
+ if (g.gl_matchc == 1 && dst) {
+ if (is_dir(dst)) {
+ abs_dst = path_append(dst, filename);
+ } else {
+ abs_dst = xstrdup(dst);
+ }
+ } else if (dst) {
+ abs_dst = path_append(dst, filename);
+ } else {
+ abs_dst = xstrdup(filename);
+ }
+ free(tmp);
+
+ resume |= global_aflag;
+ if (!quiet && resume)
+ mprintf("Resuming %s to %s\n",
+ g.gl_pathv[i], abs_dst);
+ else if (!quiet && !resume)
+ mprintf("Fetching %s to %s\n",
+ g.gl_pathv[i], abs_dst);
+ if (pathname_is_dir(g.gl_pathv[i]) && (rflag || global_rflag)) {
+ if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL,
+ pflag || global_pflag, 1, resume,
+ fflag || global_fflag) == -1)
+ err = -1;
+ } else {
+ if (do_download(conn, g.gl_pathv[i], abs_dst, NULL,
+ pflag || global_pflag, resume,
+ fflag || global_fflag) == -1)
+ err = -1;
+ }
+ free(abs_dst);
+ abs_dst = NULL;
+ }
+
+out:
+ free(abs_src);
+ globfree(&g);
+ return(err);
+}
+
+static int
+process_put(struct sftp_conn *conn, const char *src, const char *dst,
+ const char *pwd, int pflag, int rflag, int resume, int fflag)
+{
+ char *tmp_dst = NULL;
+ char *abs_dst = NULL;
+ char *tmp = NULL, *filename = NULL;
+ glob_t g;
+ int err = 0;
+ int i, dst_is_dir = 1;
+ struct stat sb;
+
+ if (dst) {
+ tmp_dst = xstrdup(dst);
+ tmp_dst = make_absolute(tmp_dst, pwd);
+ }
+
+ memset(&g, 0, sizeof(g));
+ debug3("Looking up %s", src);
+ if (glob(src, GLOB_NOCHECK | GLOB_MARK, NULL, &g)) {
+ error("File \"%s\" not found.", src);
+ err = -1;
+ goto out;
+ }
+
+ /* If we aren't fetching to pwd then stash this status for later */
+ if (tmp_dst != NULL)
+ dst_is_dir = remote_is_dir(conn, tmp_dst);
+
+ /* If multiple matches, dst may be directory or unspecified */
+ if (g.gl_matchc > 1 && tmp_dst && !dst_is_dir) {
+ error("Multiple paths match, but destination "
+ "\"%s\" is not a directory", tmp_dst);
+ err = -1;
+ goto out;
+ }
+
+ for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
+ if (stat(g.gl_pathv[i], &sb) == -1) {
+ err = -1;
+ error("stat %s: %s", g.gl_pathv[i], strerror(errno));
+ continue;
+ }
+
+ tmp = xstrdup(g.gl_pathv[i]);
+ if ((filename = basename(tmp)) == NULL) {
+ error("basename %s: %s", tmp, strerror(errno));
+ free(tmp);
+ err = -1;
+ goto out;
+ }
+
+ if (g.gl_matchc == 1 && tmp_dst) {
+ /* If directory specified, append filename */
+ if (dst_is_dir)
+ abs_dst = path_append(tmp_dst, filename);
+ else
+ abs_dst = xstrdup(tmp_dst);
+ } else if (tmp_dst) {
+ abs_dst = path_append(tmp_dst, filename);
+ } else {
+ abs_dst = make_absolute(xstrdup(filename), pwd);
+ }
+ free(tmp);
+
+ resume |= global_aflag;
+ if (!quiet && resume)
+ mprintf("Resuming upload of %s to %s\n",
+ g.gl_pathv[i], abs_dst);
+ else if (!quiet && !resume)
+ mprintf("Uploading %s to %s\n",
+ g.gl_pathv[i], abs_dst);
+ if (pathname_is_dir(g.gl_pathv[i]) && (rflag || global_rflag)) {
+ if (upload_dir(conn, g.gl_pathv[i], abs_dst,
+ pflag || global_pflag, 1, resume,
+ fflag || global_fflag) == -1)
+ err = -1;
+ } else {
+ if (do_upload(conn, g.gl_pathv[i], abs_dst,
+ pflag || global_pflag, resume,
+ fflag || global_fflag) == -1)
+ err = -1;
+ }
+ }
+
+out:
+ free(abs_dst);
+ free(tmp_dst);
+ globfree(&g);
+ return(err);
+}
+
+static int
+sdirent_comp(const void *aa, const void *bb)
+{
+ SFTP_DIRENT *a = *(SFTP_DIRENT **)aa;
+ SFTP_DIRENT *b = *(SFTP_DIRENT **)bb;
+ int rmul = sort_flag & LS_REVERSE_SORT ? -1 : 1;
+
+#define NCMP(a,b) (a == b ? 0 : (a < b ? 1 : -1))
+ if (sort_flag & LS_NAME_SORT)
+ return (rmul * strcmp(a->filename, b->filename));
+ else if (sort_flag & LS_TIME_SORT)
+ return (rmul * NCMP(a->a.mtime, b->a.mtime));
+ else if (sort_flag & LS_SIZE_SORT)
+ return (rmul * NCMP(a->a.size, b->a.size));
+
+ fatal("Unknown ls sort type");
+}
+
+/* sftp ls.1 replacement for directories */
+static int
+do_ls_dir(struct sftp_conn *conn, const char *path,
+ const char *strip_path, int lflag)
+{
+ int n;
+ u_int c = 1, colspace = 0, columns = 1;
+ SFTP_DIRENT **d;
+
+ if ((n = do_readdir(conn, path, &d)) != 0)
+ return (n);
+
+ if (!(lflag & LS_SHORT_VIEW)) {
+ u_int m = 0, width = 80;
+ struct winsize ws;
+ char *tmp;
+
+ /* Count entries for sort and find longest filename */
+ for (n = 0; d[n] != NULL; n++) {
+ if (d[n]->filename[0] != '.' || (lflag & LS_SHOW_ALL))
+ m = MAXIMUM(m, strlen(d[n]->filename));
+ }
+
+ /* Add any subpath that also needs to be counted */
+ tmp = path_strip(path, strip_path);
+ m += strlen(tmp);
+ free(tmp);
+
+ if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
+ width = ws.ws_col;
+
+ columns = width / (m + 2);
+ columns = MAXIMUM(columns, 1);
+ colspace = width / columns;
+ colspace = MINIMUM(colspace, width);
+ }
+
+ if (lflag & SORT_FLAGS) {
+ for (n = 0; d[n] != NULL; n++)
+ ; /* count entries */
+ sort_flag = lflag & (SORT_FLAGS|LS_REVERSE_SORT);
+ qsort(d, n, sizeof(*d), sdirent_comp);
+ }
+
+ for (n = 0; d[n] != NULL && !interrupted; n++) {
+ char *tmp, *fname;
+
+ if (d[n]->filename[0] == '.' && !(lflag & LS_SHOW_ALL))
+ continue;
+
+ tmp = path_append(path, d[n]->filename);
+ fname = path_strip(tmp, strip_path);
+ free(tmp);
+
+ if (lflag & LS_LONG_VIEW) {
+ if (lflag & (LS_NUMERIC_VIEW|LS_SI_UNITS)) {
+ char *lname;
+ struct stat sb;
+
+ memset(&sb, 0, sizeof(sb));
+ attrib_to_stat(&d[n]->a, &sb);
+ lname = ls_file(fname, &sb, 1,
+ (lflag & LS_SI_UNITS));
+ mprintf("%s\n", lname);
+ free(lname);
+ } else
+ mprintf("%s\n", d[n]->longname);
+ } else {
+ mprintf("%-*s", colspace, fname);
+ if (c >= columns) {
+ printf("\n");
+ c = 1;
+ } else
+ c++;
+ }
+
+ free(fname);
+ }
+
+ if (!(lflag & LS_LONG_VIEW) && (c != 1))
+ printf("\n");
+
+ free_sftp_dirents(d);
+ return (0);
+}
+
+static int
+sglob_comp(const void *aa, const void *bb)
+{
+ u_int a = *(const u_int *)aa;
+ u_int b = *(const u_int *)bb;
+ const char *ap = sort_glob->gl_pathv[a];
+ const char *bp = sort_glob->gl_pathv[b];
+ const struct stat *as = sort_glob->gl_statv[a];
+ const struct stat *bs = sort_glob->gl_statv[b];
+ int rmul = sort_flag & LS_REVERSE_SORT ? -1 : 1;
+
+#define NCMP(a,b) (a == b ? 0 : (a < b ? 1 : -1))
+ if (sort_flag & LS_NAME_SORT)
+ return (rmul * strcmp(ap, bp));
+ else if (sort_flag & LS_TIME_SORT) {
+#if defined(HAVE_STRUCT_STAT_ST_MTIM)
+ return (rmul * timespeccmp(&as->st_mtim, &bs->st_mtim, <));
+#elif defined(HAVE_STRUCT_STAT_ST_MTIME)
+ return (rmul * NCMP(as->st_mtime, bs->st_mtime));
+#else
+ return rmul * 1;
+#endif
+ } else if (sort_flag & LS_SIZE_SORT)
+ return (rmul * NCMP(as->st_size, bs->st_size));
+
+ fatal("Unknown ls sort type");
+}
+
+/* sftp ls.1 replacement which handles path globs */
+static int
+do_globbed_ls(struct sftp_conn *conn, const char *path,
+ const char *strip_path, int lflag)
+{
+ char *fname, *lname;
+ glob_t g;
+ int err, r;
+ struct winsize ws;
+ u_int i, j, nentries, *indices = NULL, c = 1;
+ u_int colspace = 0, columns = 1, m = 0, width = 80;
+
+ memset(&g, 0, sizeof(g));
+
+ if ((r = remote_glob(conn, path,
+ GLOB_MARK|GLOB_NOCHECK|GLOB_BRACE|GLOB_KEEPSTAT|GLOB_NOSORT,
+ NULL, &g)) != 0 ||
+ (g.gl_pathc && !g.gl_matchc)) {
+ if (g.gl_pathc)
+ globfree(&g);
+ if (r == GLOB_NOSPACE) {
+ error("Can't ls: Too many matches for \"%s\"", path);
+ } else {
+ error("Can't ls: \"%s\" not found", path);
+ }
+ return -1;
+ }
+
+ if (interrupted)
+ goto out;
+
+ /*
+ * If the glob returns a single match and it is a directory,
+ * then just list its contents.
+ */
+ if (g.gl_matchc == 1 && g.gl_statv[0] != NULL &&
+ S_ISDIR(g.gl_statv[0]->st_mode)) {
+ err = do_ls_dir(conn, g.gl_pathv[0], strip_path, lflag);
+ globfree(&g);
+ return err;
+ }
+
+ if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
+ width = ws.ws_col;
+
+ if (!(lflag & LS_SHORT_VIEW)) {
+ /* Count entries for sort and find longest filename */
+ for (i = 0; g.gl_pathv[i]; i++)
+ m = MAXIMUM(m, strlen(g.gl_pathv[i]));
+
+ columns = width / (m + 2);
+ columns = MAXIMUM(columns, 1);
+ colspace = width / columns;
+ }
+
+ /*
+ * Sorting: rather than mess with the contents of glob_t, prepare
+ * an array of indices into it and sort that. For the usual
+ * unsorted case, the indices are just the identity 1=1, 2=2, etc.
+ */
+ for (nentries = 0; g.gl_pathv[nentries] != NULL; nentries++)
+ ; /* count entries */
+ indices = calloc(nentries, sizeof(*indices));
+ for (i = 0; i < nentries; i++)
+ indices[i] = i;
+
+ if (lflag & SORT_FLAGS) {
+ sort_glob = &g;
+ sort_flag = lflag & (SORT_FLAGS|LS_REVERSE_SORT);
+ qsort(indices, nentries, sizeof(*indices), sglob_comp);
+ sort_glob = NULL;
+ }
+
+ for (j = 0; j < nentries && !interrupted; j++) {
+ i = indices[j];
+ fname = path_strip(g.gl_pathv[i], strip_path);
+ if (lflag & LS_LONG_VIEW) {
+ if (g.gl_statv[i] == NULL) {
+ error("no stat information for %s", fname);
+ continue;
+ }
+ lname = ls_file(fname, g.gl_statv[i], 1,
+ (lflag & LS_SI_UNITS));
+ mprintf("%s\n", lname);
+ free(lname);
+ } else {
+ mprintf("%-*s", colspace, fname);
+ if (c >= columns) {
+ printf("\n");
+ c = 1;
+ } else
+ c++;
+ }
+ free(fname);
+ }
+
+ if (!(lflag & LS_LONG_VIEW) && (c != 1))
+ printf("\n");
+
+ out:
+ if (g.gl_pathc)
+ globfree(&g);
+ free(indices);
+
+ return 0;
+}
+
+static int
+do_df(struct sftp_conn *conn, const char *path, int hflag, int iflag)
+{
+ struct sftp_statvfs st;
+ char s_used[FMT_SCALED_STRSIZE], s_avail[FMT_SCALED_STRSIZE];
+ char s_root[FMT_SCALED_STRSIZE], s_total[FMT_SCALED_STRSIZE];
+ char s_icapacity[16], s_dcapacity[16];
+
+ if (do_statvfs(conn, path, &st, 1) == -1)
+ return -1;
+ if (st.f_files == 0)
+ strlcpy(s_icapacity, "ERR", sizeof(s_icapacity));
+ else {
+ snprintf(s_icapacity, sizeof(s_icapacity), "%3llu%%",
+ (unsigned long long)(100 * (st.f_files - st.f_ffree) /
+ st.f_files));
+ }
+ if (st.f_blocks == 0)
+ strlcpy(s_dcapacity, "ERR", sizeof(s_dcapacity));
+ else {
+ snprintf(s_dcapacity, sizeof(s_dcapacity), "%3llu%%",
+ (unsigned long long)(100 * (st.f_blocks - st.f_bfree) /
+ st.f_blocks));
+ }
+ if (iflag) {
+ printf(" Inodes Used Avail "
+ "(root) %%Capacity\n");
+ printf("%11llu %11llu %11llu %11llu %s\n",
+ (unsigned long long)st.f_files,
+ (unsigned long long)(st.f_files - st.f_ffree),
+ (unsigned long long)st.f_favail,
+ (unsigned long long)st.f_ffree, s_icapacity);
+ } else if (hflag) {
+ strlcpy(s_used, "error", sizeof(s_used));
+ strlcpy(s_avail, "error", sizeof(s_avail));
+ strlcpy(s_root, "error", sizeof(s_root));
+ strlcpy(s_total, "error", sizeof(s_total));
+ fmt_scaled((st.f_blocks - st.f_bfree) * st.f_frsize, s_used);
+ fmt_scaled(st.f_bavail * st.f_frsize, s_avail);
+ fmt_scaled(st.f_bfree * st.f_frsize, s_root);
+ fmt_scaled(st.f_blocks * st.f_frsize, s_total);
+ printf(" Size Used Avail (root) %%Capacity\n");
+ printf("%7sB %7sB %7sB %7sB %s\n",
+ s_total, s_used, s_avail, s_root, s_dcapacity);
+ } else {
+ printf(" Size Used Avail "
+ "(root) %%Capacity\n");
+ printf("%12llu %12llu %12llu %12llu %s\n",
+ (unsigned long long)(st.f_frsize * st.f_blocks / 1024),
+ (unsigned long long)(st.f_frsize *
+ (st.f_blocks - st.f_bfree) / 1024),
+ (unsigned long long)(st.f_frsize * st.f_bavail / 1024),
+ (unsigned long long)(st.f_frsize * st.f_bfree / 1024),
+ s_dcapacity);
+ }
+ return 0;
+}
+
+/*
+ * Undo escaping of glob sequences in place. Used to undo extra escaping
+ * applied in makeargv() when the string is destined for a function that
+ * does not glob it.
+ */
+static void
+undo_glob_escape(char *s)
+{
+ size_t i, j;
+
+ for (i = j = 0;;) {
+ if (s[i] == '\0') {
+ s[j] = '\0';
+ return;
+ }
+ if (s[i] != '\\') {
+ s[j++] = s[i++];
+ continue;
+ }
+ /* s[i] == '\\' */
+ ++i;
+ switch (s[i]) {
+ case '?':
+ case '[':
+ case '*':
+ case '\\':
+ s[j++] = s[i++];
+ break;
+ case '\0':
+ s[j++] = '\\';
+ s[j] = '\0';
+ return;
+ default:
+ s[j++] = '\\';
+ s[j++] = s[i++];
+ break;
+ }
+ }
+}
+
+/*
+ * Split a string into an argument vector using sh(1)-style quoting,
+ * comment and escaping rules, but with some tweaks to handle glob(3)
+ * wildcards.
+ * The "sloppy" flag allows for recovery from missing terminating quote, for
+ * use in parsing incomplete commandlines during tab autocompletion.
+ *
+ * Returns NULL on error or a NULL-terminated array of arguments.
+ *
+ * If "lastquote" is not NULL, the quoting character used for the last
+ * argument is placed in *lastquote ("\0", "'" or "\"").
+ *
+ * If "terminated" is not NULL, *terminated will be set to 1 when the
+ * last argument's quote has been properly terminated or 0 otherwise.
+ * This parameter is only of use if "sloppy" is set.
+ */
+#define MAXARGS 128
+#define MAXARGLEN 8192
+static char **
+makeargv(const char *arg, int *argcp, int sloppy, char *lastquote,
+ u_int *terminated)
+{
+ int argc, quot;
+ size_t i, j;
+ static char argvs[MAXARGLEN];
+ static char *argv[MAXARGS + 1];
+ enum { MA_START, MA_SQUOTE, MA_DQUOTE, MA_UNQUOTED } state, q;
+
+ *argcp = argc = 0;
+ if (strlen(arg) > sizeof(argvs) - 1) {
+ args_too_longs:
+ error("string too long");
+ return NULL;
+ }
+ if (terminated != NULL)
+ *terminated = 1;
+ if (lastquote != NULL)
+ *lastquote = '\0';
+ state = MA_START;
+ i = j = 0;
+ for (;;) {
+ if ((size_t)argc >= sizeof(argv) / sizeof(*argv)){
+ error("Too many arguments.");
+ return NULL;
+ }
+ if (isspace((unsigned char)arg[i])) {
+ if (state == MA_UNQUOTED) {
+ /* Terminate current argument */
+ argvs[j++] = '\0';
+ argc++;
+ state = MA_START;
+ } else if (state != MA_START)
+ argvs[j++] = arg[i];
+ } else if (arg[i] == '"' || arg[i] == '\'') {
+ q = arg[i] == '"' ? MA_DQUOTE : MA_SQUOTE;
+ if (state == MA_START) {
+ argv[argc] = argvs + j;
+ state = q;
+ if (lastquote != NULL)
+ *lastquote = arg[i];
+ } else if (state == MA_UNQUOTED)
+ state = q;
+ else if (state == q)
+ state = MA_UNQUOTED;
+ else
+ argvs[j++] = arg[i];
+ } else if (arg[i] == '\\') {
+ if (state == MA_SQUOTE || state == MA_DQUOTE) {
+ quot = state == MA_SQUOTE ? '\'' : '"';
+ /* Unescape quote we are in */
+ /* XXX support \n and friends? */
+ if (arg[i + 1] == quot) {
+ i++;
+ argvs[j++] = arg[i];
+ } else if (arg[i + 1] == '?' ||
+ arg[i + 1] == '[' || arg[i + 1] == '*') {
+ /*
+ * Special case for sftp: append
+ * double-escaped glob sequence -
+ * glob will undo one level of
+ * escaping. NB. string can grow here.
+ */
+ if (j >= sizeof(argvs) - 5)
+ goto args_too_longs;
+ argvs[j++] = '\\';
+ argvs[j++] = arg[i++];
+ argvs[j++] = '\\';
+ argvs[j++] = arg[i];
+ } else {
+ argvs[j++] = arg[i++];
+ argvs[j++] = arg[i];
+ }
+ } else {
+ if (state == MA_START) {
+ argv[argc] = argvs + j;
+ state = MA_UNQUOTED;
+ if (lastquote != NULL)
+ *lastquote = '\0';
+ }
+ if (arg[i + 1] == '?' || arg[i + 1] == '[' ||
+ arg[i + 1] == '*' || arg[i + 1] == '\\') {
+ /*
+ * Special case for sftp: append
+ * escaped glob sequence -
+ * glob will undo one level of
+ * escaping.
+ */
+ argvs[j++] = arg[i++];
+ argvs[j++] = arg[i];
+ } else {
+ /* Unescape everything */
+ /* XXX support \n and friends? */
+ i++;
+ argvs[j++] = arg[i];
+ }
+ }
+ } else if (arg[i] == '#') {
+ if (state == MA_SQUOTE || state == MA_DQUOTE)
+ argvs[j++] = arg[i];
+ else
+ goto string_done;
+ } else if (arg[i] == '\0') {
+ if (state == MA_SQUOTE || state == MA_DQUOTE) {
+ if (sloppy) {
+ state = MA_UNQUOTED;
+ if (terminated != NULL)
+ *terminated = 0;
+ goto string_done;
+ }
+ error("Unterminated quoted argument");
+ return NULL;
+ }
+ string_done:
+ if (state == MA_UNQUOTED) {
+ argvs[j++] = '\0';
+ argc++;
+ }
+ break;
+ } else {
+ if (state == MA_START) {
+ argv[argc] = argvs + j;
+ state = MA_UNQUOTED;
+ if (lastquote != NULL)
+ *lastquote = '\0';
+ }
+ if ((state == MA_SQUOTE || state == MA_DQUOTE) &&
+ (arg[i] == '?' || arg[i] == '[' || arg[i] == '*')) {
+ /*
+ * Special case for sftp: escape quoted
+ * glob(3) wildcards. NB. string can grow
+ * here.
+ */
+ if (j >= sizeof(argvs) - 3)
+ goto args_too_longs;
+ argvs[j++] = '\\';
+ argvs[j++] = arg[i];
+ } else
+ argvs[j++] = arg[i];
+ }
+ i++;
+ }
+ *argcp = argc;
+ return argv;
+}
+
+static int
+parse_args(const char **cpp, int *ignore_errors, int *disable_echo, int *aflag,
+ int *fflag, int *hflag, int *iflag, int *lflag, int *pflag,
+ int *rflag, int *sflag,
+ unsigned long *n_arg, char **path1, char **path2)
+{
+ const char *cmd, *cp = *cpp;
+ char *cp2, **argv;
+ int base = 0;
+ long l;
+ int path1_mandatory = 0, i, cmdnum, optidx, argc;
+
+ /* Skip leading whitespace */
+ cp = cp + strspn(cp, WHITESPACE);
+
+ /*
+ * Check for leading '-' (disable error processing) and '@' (suppress
+ * command echo)
+ */
+ *ignore_errors = 0;
+ *disable_echo = 0;
+ for (;*cp != '\0'; cp++) {
+ if (*cp == '-') {
+ *ignore_errors = 1;
+ } else if (*cp == '@') {
+ *disable_echo = 1;
+ } else {
+ /* all other characters terminate prefix processing */
+ break;
+ }
+ }
+ cp = cp + strspn(cp, WHITESPACE);
+
+ /* Ignore blank lines and lines which begin with comment '#' char */
+ if (*cp == '\0' || *cp == '#')
+ return (0);
+
+ if ((argv = makeargv(cp, &argc, 0, NULL, NULL)) == NULL)
+ return -1;
+
+ /* Figure out which command we have */
+ for (i = 0; cmds[i].c != NULL; i++) {
+ if (argv[0] != NULL && strcasecmp(cmds[i].c, argv[0]) == 0)
+ break;
+ }
+ cmdnum = cmds[i].n;
+ cmd = cmds[i].c;
+
+ /* Special case */
+ if (*cp == '!') {
+ cp++;
+ cmdnum = I_SHELL;
+ } else if (cmdnum == -1) {
+ error("Invalid command.");
+ return -1;
+ }
+
+ /* Get arguments and parse flags */
+ *aflag = *fflag = *hflag = *iflag = *lflag = *pflag = 0;
+ *rflag = *sflag = 0;
+ *path1 = *path2 = NULL;
+ optidx = 1;
+ switch (cmdnum) {
+ case I_GET:
+ case I_REGET:
+ case I_REPUT:
+ case I_PUT:
+ if ((optidx = parse_getput_flags(cmd, argv, argc,
+ aflag, fflag, pflag, rflag)) == -1)
+ return -1;
+ /* Get first pathname (mandatory) */
+ if (argc - optidx < 1) {
+ error("You must specify at least one path after a "
+ "%s command.", cmd);
+ return -1;
+ }
+ *path1 = xstrdup(argv[optidx]);
+ /* Get second pathname (optional) */
+ if (argc - optidx > 1) {
+ *path2 = xstrdup(argv[optidx + 1]);
+ /* Destination is not globbed */
+ undo_glob_escape(*path2);
+ }
+ break;
+ case I_LINK:
+ if ((optidx = parse_link_flags(cmd, argv, argc, sflag)) == -1)
+ return -1;
+ goto parse_two_paths;
+ case I_RENAME:
+ if ((optidx = parse_rename_flags(cmd, argv, argc, lflag)) == -1)
+ return -1;
+ goto parse_two_paths;
+ case I_SYMLINK:
+ if ((optidx = parse_no_flags(cmd, argv, argc)) == -1)
+ return -1;
+ parse_two_paths:
+ if (argc - optidx < 2) {
+ error("You must specify two paths after a %s "
+ "command.", cmd);
+ return -1;
+ }
+ *path1 = xstrdup(argv[optidx]);
+ *path2 = xstrdup(argv[optidx + 1]);
+ /* Paths are not globbed */
+ undo_glob_escape(*path1);
+ undo_glob_escape(*path2);
+ break;
+ case I_RM:
+ case I_MKDIR:
+ case I_RMDIR:
+ case I_LMKDIR:
+ path1_mandatory = 1;
+ /* FALLTHROUGH */
+ case I_CHDIR:
+ case I_LCHDIR:
+ if ((optidx = parse_no_flags(cmd, argv, argc)) == -1)
+ return -1;
+ /* Get pathname (mandatory) */
+ if (argc - optidx < 1) {
+ if (!path1_mandatory)
+ break; /* return a NULL path1 */
+ error("You must specify a path after a %s command.",
+ cmd);
+ return -1;
+ }
+ *path1 = xstrdup(argv[optidx]);
+ /* Only "rm" globs */
+ if (cmdnum != I_RM)
+ undo_glob_escape(*path1);
+ break;
+ case I_DF:
+ if ((optidx = parse_df_flags(cmd, argv, argc, hflag,
+ iflag)) == -1)
+ return -1;
+ /* Default to current directory if no path specified */
+ if (argc - optidx < 1)
+ *path1 = NULL;
+ else {
+ *path1 = xstrdup(argv[optidx]);
+ undo_glob_escape(*path1);
+ }
+ break;
+ case I_LS:
+ if ((optidx = parse_ls_flags(argv, argc, lflag)) == -1)
+ return(-1);
+ /* Path is optional */
+ if (argc - optidx > 0)
+ *path1 = xstrdup(argv[optidx]);
+ break;
+ case I_LLS:
+ /* Skip ls command and following whitespace */
+ cp = cp + strlen(cmd) + strspn(cp, WHITESPACE);
+ case I_SHELL:
+ /* Uses the rest of the line */
+ break;
+ case I_LUMASK:
+ case I_CHMOD:
+ base = 8;
+ /* FALLTHROUGH */
+ case I_CHOWN:
+ case I_CHGRP:
+ if ((optidx = parse_ch_flags(cmd, argv, argc, hflag)) == -1)
+ return -1;
+ /* Get numeric arg (mandatory) */
+ if (argc - optidx < 1)
+ goto need_num_arg;
+ errno = 0;
+ l = strtol(argv[optidx], &cp2, base);
+ if (cp2 == argv[optidx] || *cp2 != '\0' ||
+ ((l == LONG_MIN || l == LONG_MAX) && errno == ERANGE) ||
+ l < 0) {
+ need_num_arg:
+ error("You must supply a numeric argument "
+ "to the %s command.", cmd);
+ return -1;
+ }
+ *n_arg = l;
+ if (cmdnum == I_LUMASK)
+ break;
+ /* Get pathname (mandatory) */
+ if (argc - optidx < 2) {
+ error("You must specify a path after a %s command.",
+ cmd);
+ return -1;
+ }
+ *path1 = xstrdup(argv[optidx + 1]);
+ break;
+ case I_QUIT:
+ case I_PWD:
+ case I_LPWD:
+ case I_HELP:
+ case I_VERSION:
+ case I_PROGRESS:
+ if ((optidx = parse_no_flags(cmd, argv, argc)) == -1)
+ return -1;
+ break;
+ default:
+ fatal("Command not implemented");
+ }
+
+ *cpp = cp;
+ return(cmdnum);
+}
+
+static int
+parse_dispatch_command(struct sftp_conn *conn, const char *cmd, char **pwd,
+ const char *startdir, int err_abort, int echo_command)
+{
+ const char *ocmd = cmd;
+ char *path1, *path2, *tmp;
+ int ignore_errors = 0, disable_echo = 1;
+ int aflag = 0, fflag = 0, hflag = 0, iflag = 0;
+ int lflag = 0, pflag = 0, rflag = 0, sflag = 0;
+ int cmdnum, i;
+ unsigned long n_arg = 0;
+ Attrib a, *aa;
+ char path_buf[PATH_MAX];
+ int err = 0;
+ glob_t g;
+
+ path1 = path2 = NULL;
+ cmdnum = parse_args(&cmd, &ignore_errors, &disable_echo, &aflag, &fflag,
+ &hflag, &iflag, &lflag, &pflag, &rflag, &sflag, &n_arg,
+ &path1, &path2);
+ if (ignore_errors != 0)
+ err_abort = 0;
+
+ if (echo_command && !disable_echo)
+ mprintf("sftp> %s\n", ocmd);
+
+ memset(&g, 0, sizeof(g));
+
+ /* Perform command */
+ switch (cmdnum) {
+ case 0:
+ /* Blank line */
+ break;
+ case -1:
+ /* Unrecognized command */
+ err = -1;
+ break;
+ case I_REGET:
+ aflag = 1;
+ /* FALLTHROUGH */
+ case I_GET:
+ err = process_get(conn, path1, path2, *pwd, pflag,
+ rflag, aflag, fflag);
+ break;
+ case I_REPUT:
+ aflag = 1;
+ /* FALLTHROUGH */
+ case I_PUT:
+ err = process_put(conn, path1, path2, *pwd, pflag,
+ rflag, aflag, fflag);
+ break;
+ case I_RENAME:
+ path1 = make_absolute(path1, *pwd);
+ path2 = make_absolute(path2, *pwd);
+ err = do_rename(conn, path1, path2, lflag);
+ break;
+ case I_SYMLINK:
+ sflag = 1;
+ /* FALLTHROUGH */
+ case I_LINK:
+ if (!sflag)
+ path1 = make_absolute(path1, *pwd);
+ path2 = make_absolute(path2, *pwd);
+ err = (sflag ? do_symlink : do_hardlink)(conn, path1, path2);
+ break;
+ case I_RM:
+ path1 = make_absolute(path1, *pwd);
+ remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
+ for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
+ if (!quiet)
+ mprintf("Removing %s\n", g.gl_pathv[i]);
+ err = do_rm(conn, g.gl_pathv[i]);
+ if (err != 0 && err_abort)
+ break;
+ }
+ break;
+ case I_MKDIR:
+ path1 = make_absolute(path1, *pwd);
+ attrib_clear(&a);
+ a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
+ a.perm = 0777;
+ err = do_mkdir(conn, path1, &a, 1);
+ break;
+ case I_RMDIR:
+ path1 = make_absolute(path1, *pwd);
+ err = do_rmdir(conn, path1);
+ break;
+ case I_CHDIR:
+ if (path1 == NULL || *path1 == '\0')
+ path1 = xstrdup(startdir);
+ path1 = make_absolute(path1, *pwd);
+ if ((tmp = do_realpath(conn, path1)) == NULL) {
+ err = 1;
+ break;
+ }
+ if ((aa = do_stat(conn, tmp, 0)) == NULL) {
+ free(tmp);
+ err = 1;
+ break;
+ }
+ if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) {
+ error("Can't change directory: Can't check target");
+ free(tmp);
+ err = 1;
+ break;
+ }
+ if (!S_ISDIR(aa->perm)) {
+ error("Can't change directory: \"%s\" is not "
+ "a directory", tmp);
+ free(tmp);
+ err = 1;
+ break;
+ }
+ free(*pwd);
+ *pwd = tmp;
+ break;
+ case I_LS:
+ if (!path1) {
+ do_ls_dir(conn, *pwd, *pwd, lflag);
+ break;
+ }
+
+ /* Strip pwd off beginning of non-absolute paths */
+ tmp = NULL;
+ if (!path_absolute(path1))
+ tmp = *pwd;
+
+ path1 = make_absolute(path1, *pwd);
+ err = do_globbed_ls(conn, path1, tmp, lflag);
+ break;
+ case I_DF:
+ /* Default to current directory if no path specified */
+ if (path1 == NULL)
+ path1 = xstrdup(*pwd);
+ path1 = make_absolute(path1, *pwd);
+ err = do_df(conn, path1, hflag, iflag);
+ break;
+ case I_LCHDIR:
+ if (path1 == NULL || *path1 == '\0')
+ path1 = xstrdup("~");
+ tmp = tilde_expand_filename(path1, getuid());
+ free(path1);
+ path1 = tmp;
+ if (chdir(path1) == -1) {
+ error("Couldn't change local directory to "
+ "\"%s\": %s", path1, strerror(errno));
+ err = 1;
+ }
+ break;
+ case I_LMKDIR:
+ if (mkdir(path1, 0777) == -1) {
+ error("Couldn't create local directory "
+ "\"%s\": %s", path1, strerror(errno));
+ err = 1;
+ }
+ break;
+ case I_LLS:
+ local_do_ls(cmd);
+ break;
+ case I_SHELL:
+ local_do_shell(cmd);
+ break;
+ case I_LUMASK:
+ umask(n_arg);
+ printf("Local umask: %03lo\n", n_arg);
+ break;
+ case I_CHMOD:
+ path1 = make_absolute(path1, *pwd);
+ attrib_clear(&a);
+ a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
+ a.perm = n_arg;
+ remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
+ for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
+ if (!quiet)
+ mprintf("Changing mode on %s\n",
+ g.gl_pathv[i]);
+ err = (hflag ? do_lsetstat : do_setstat)(conn,
+ g.gl_pathv[i], &a);
+ if (err != 0 && err_abort)
+ break;
+ }
+ break;
+ case I_CHOWN:
+ case I_CHGRP:
+ path1 = make_absolute(path1, *pwd);
+ remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
+ for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
+ if (!(aa = (hflag ? do_lstat : do_stat)(conn,
+ g.gl_pathv[i], 0))) {
+ if (err_abort) {
+ err = -1;
+ break;
+ } else
+ continue;
+ }
+ if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) {
+ error("Can't get current ownership of "
+ "remote file \"%s\"", g.gl_pathv[i]);
+ if (err_abort) {
+ err = -1;
+ break;
+ } else
+ continue;
+ }
+ aa->flags &= SSH2_FILEXFER_ATTR_UIDGID;
+ if (cmdnum == I_CHOWN) {
+ if (!quiet)
+ mprintf("Changing owner on %s\n",
+ g.gl_pathv[i]);
+ aa->uid = n_arg;
+ } else {
+ if (!quiet)
+ mprintf("Changing group on %s\n",
+ g.gl_pathv[i]);
+ aa->gid = n_arg;
+ }
+ err = (hflag ? do_lsetstat : do_setstat)(conn,
+ g.gl_pathv[i], aa);
+ if (err != 0 && err_abort)
+ break;
+ }
+ break;
+ case I_PWD:
+ mprintf("Remote working directory: %s\n", *pwd);
+ break;
+ case I_LPWD:
+ if (!getcwd(path_buf, sizeof(path_buf))) {
+ error("Couldn't get local cwd: %s", strerror(errno));
+ err = -1;
+ break;
+ }
+ mprintf("Local working directory: %s\n", path_buf);
+ break;
+ case I_QUIT:
+ /* Processed below */
+ break;
+ case I_HELP:
+ help();
+ break;
+ case I_VERSION:
+ printf("SFTP protocol version %u\n", sftp_proto_version(conn));
+ break;
+ case I_PROGRESS:
+ showprogress = !showprogress;
+ if (showprogress)
+ printf("Progress meter enabled\n");
+ else
+ printf("Progress meter disabled\n");
+ break;
+ default:
+ fatal("%d is not implemented", cmdnum);
+ }
+
+ if (g.gl_pathc)
+ globfree(&g);
+ free(path1);
+ free(path2);
+
+ /* If an unignored error occurs in batch mode we should abort. */
+ if (err_abort && err != 0)
+ return (-1);
+ else if (cmdnum == I_QUIT)
+ return (1);
+
+ return (0);
+}
+
+#ifdef USE_LIBEDIT
+static char *
+prompt(EditLine *el)
+{
+ return ("sftp> ");
+}
+
+/* Display entries in 'list' after skipping the first 'len' chars */
+static void
+complete_display(char **list, u_int len)
+{
+ u_int y, m = 0, width = 80, columns = 1, colspace = 0, llen;
+ struct winsize ws;
+ char *tmp;
+
+ /* Count entries for sort and find longest */
+ for (y = 0; list[y]; y++)
+ m = MAXIMUM(m, strlen(list[y]));
+
+ if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
+ width = ws.ws_col;
+
+ m = m > len ? m - len : 0;
+ columns = width / (m + 2);
+ columns = MAXIMUM(columns, 1);
+ colspace = width / columns;
+ colspace = MINIMUM(colspace, width);
+
+ printf("\n");
+ m = 1;
+ for (y = 0; list[y]; y++) {
+ llen = strlen(list[y]);
+ tmp = llen > len ? list[y] + len : "";
+ mprintf("%-*s", colspace, tmp);
+ if (m >= columns) {
+ printf("\n");
+ m = 1;
+ } else
+ m++;
+ }
+ printf("\n");
+}
+
+/*
+ * Given a "list" of words that begin with a common prefix of "word",
+ * attempt to find an autocompletion to extends "word" by the next
+ * characters common to all entries in "list".
+ */
+static char *
+complete_ambiguous(const char *word, char **list, size_t count)
+{
+ if (word == NULL)
+ return NULL;
+
+ if (count > 0) {
+ u_int y, matchlen = strlen(list[0]);
+
+ /* Find length of common stem */
+ for (y = 1; list[y]; y++) {
+ u_int x;
+
+ for (x = 0; x < matchlen; x++)
+ if (list[0][x] != list[y][x])
+ break;
+
+ matchlen = x;
+ }
+
+ if (matchlen > strlen(word)) {
+ char *tmp = xstrdup(list[0]);
+
+ tmp[matchlen] = '\0';
+ return tmp;
+ }
+ }
+
+ return xstrdup(word);
+}
+
+/* Autocomplete a sftp command */
+static int
+complete_cmd_parse(EditLine *el, char *cmd, int lastarg, char quote,
+ int terminated)
+{
+ u_int y, count = 0, cmdlen, tmplen;
+ char *tmp, **list, argterm[3];
+ const LineInfo *lf;
+
+ list = xcalloc((sizeof(cmds) / sizeof(*cmds)) + 1, sizeof(char *));
+
+ /* No command specified: display all available commands */
+ if (cmd == NULL) {
+ for (y = 0; cmds[y].c; y++)
+ list[count++] = xstrdup(cmds[y].c);
+
+ list[count] = NULL;
+ complete_display(list, 0);
+
+ for (y = 0; list[y] != NULL; y++)
+ free(list[y]);
+ free(list);
+ return count;
+ }
+
+ /* Prepare subset of commands that start with "cmd" */
+ cmdlen = strlen(cmd);
+ for (y = 0; cmds[y].c; y++) {
+ if (!strncasecmp(cmd, cmds[y].c, cmdlen))
+ list[count++] = xstrdup(cmds[y].c);
+ }
+ list[count] = NULL;
+
+ if (count == 0) {
+ free(list);
+ return 0;
+ }
+
+ /* Complete ambiguous command */
+ tmp = complete_ambiguous(cmd, list, count);
+ if (count > 1)
+ complete_display(list, 0);
+
+ for (y = 0; list[y]; y++)
+ free(list[y]);
+ free(list);
+
+ if (tmp != NULL) {
+ tmplen = strlen(tmp);
+ cmdlen = strlen(cmd);
+ /* If cmd may be extended then do so */
+ if (tmplen > cmdlen)
+ if (el_insertstr(el, tmp + cmdlen) == -1)
+ fatal("el_insertstr failed.");
+ lf = el_line(el);
+ /* Terminate argument cleanly */
+ if (count == 1) {
+ y = 0;
+ if (!terminated)
+ argterm[y++] = quote;
+ if (lastarg || *(lf->cursor) != ' ')
+ argterm[y++] = ' ';
+ argterm[y] = '\0';
+ if (y > 0 && el_insertstr(el, argterm) == -1)
+ fatal("el_insertstr failed.");
+ }
+ free(tmp);
+ }
+
+ return count;
+}
+
+/*
+ * Determine whether a particular sftp command's arguments (if any)
+ * represent local or remote files.
+ */
+static int
+complete_is_remote(char *cmd) {
+ int i;
+
+ if (cmd == NULL)
+ return -1;
+
+ for (i = 0; cmds[i].c; i++) {
+ if (!strncasecmp(cmd, cmds[i].c, strlen(cmds[i].c)))
+ return cmds[i].t;
+ }
+
+ return -1;
+}
+
+/* Autocomplete a filename "file" */
+static int
+complete_match(EditLine *el, struct sftp_conn *conn, char *remote_path,
+ char *file, int remote, int lastarg, char quote, int terminated)
+{
+ glob_t g;
+ char *tmp, *tmp2, ins[8];
+ u_int i, hadglob, pwdlen, len, tmplen, filelen, cesc, isesc, isabs;
+ int clen;
+ const LineInfo *lf;
+
+ /* Glob from "file" location */
+ if (file == NULL)
+ tmp = xstrdup("*");
+ else
+ xasprintf(&tmp, "%s*", file);
+
+ /* Check if the path is absolute. */
+ isabs = path_absolute(tmp);
+
+ memset(&g, 0, sizeof(g));
+ if (remote != LOCAL) {
+ tmp = make_absolute(tmp, remote_path);
+ remote_glob(conn, tmp, GLOB_DOOFFS|GLOB_MARK, NULL, &g);
+ } else
+ glob(tmp, GLOB_DOOFFS|GLOB_MARK, NULL, &g);
+
+ /* Determine length of pwd so we can trim completion display */
+ for (hadglob = tmplen = pwdlen = 0; tmp[tmplen] != 0; tmplen++) {
+ /* Terminate counting on first unescaped glob metacharacter */
+ if (tmp[tmplen] == '*' || tmp[tmplen] == '?') {
+ if (tmp[tmplen] != '*' || tmp[tmplen + 1] != '\0')
+ hadglob = 1;
+ break;
+ }
+ if (tmp[tmplen] == '\\' && tmp[tmplen + 1] != '\0')
+ tmplen++;
+ if (tmp[tmplen] == '/')
+ pwdlen = tmplen + 1; /* track last seen '/' */
+ }
+ free(tmp);
+ tmp = NULL;
+
+ if (g.gl_matchc == 0)
+ goto out;
+
+ if (g.gl_matchc > 1)
+ complete_display(g.gl_pathv, pwdlen);
+
+ /* Don't try to extend globs */
+ if (file == NULL || hadglob)
+ goto out;
+
+ tmp2 = complete_ambiguous(file, g.gl_pathv, g.gl_matchc);
+ tmp = path_strip(tmp2, isabs ? NULL : remote_path);
+ free(tmp2);
+
+ if (tmp == NULL)
+ goto out;
+
+ tmplen = strlen(tmp);
+ filelen = strlen(file);
+
+ /* Count the number of escaped characters in the input string. */
+ cesc = isesc = 0;
+ for (i = 0; i < filelen; i++) {
+ if (!isesc && file[i] == '\\' && i + 1 < filelen){
+ isesc = 1;
+ cesc++;
+ } else
+ isesc = 0;
+ }
+
+ if (tmplen > (filelen - cesc)) {
+ tmp2 = tmp + filelen - cesc;
+ len = strlen(tmp2);
+ /* quote argument on way out */
+ for (i = 0; i < len; i += clen) {
+ if ((clen = mblen(tmp2 + i, len - i)) < 0 ||
+ (size_t)clen > sizeof(ins) - 2)
+ fatal("invalid multibyte character");
+ ins[0] = '\\';
+ memcpy(ins + 1, tmp2 + i, clen);
+ ins[clen + 1] = '\0';
+ switch (tmp2[i]) {
+ case '\'':
+ case '"':
+ case '\\':
+ case '\t':
+ case '[':
+ case ' ':
+ case '#':
+ case '*':
+ if (quote == '\0' || tmp2[i] == quote) {
+ if (el_insertstr(el, ins) == -1)
+ fatal("el_insertstr "
+ "failed.");
+ break;
+ }
+ /* FALLTHROUGH */
+ default:
+ if (el_insertstr(el, ins + 1) == -1)
+ fatal("el_insertstr failed.");
+ break;
+ }
+ }
+ }
+
+ lf = el_line(el);
+ if (g.gl_matchc == 1) {
+ i = 0;
+ if (!terminated && quote != '\0')
+ ins[i++] = quote;
+ if (*(lf->cursor - 1) != '/' &&
+ (lastarg || *(lf->cursor) != ' '))
+ ins[i++] = ' ';
+ ins[i] = '\0';
+ if (i > 0 && el_insertstr(el, ins) == -1)
+ fatal("el_insertstr failed.");
+ }
+ free(tmp);
+
+ out:
+ globfree(&g);
+ return g.gl_matchc;
+}
+
+/* tab-completion hook function, called via libedit */
+static unsigned char
+complete(EditLine *el, int ch)
+{
+ char **argv, *line, quote;
+ int argc, carg;
+ u_int cursor, len, terminated, ret = CC_ERROR;
+ const LineInfo *lf;
+ struct complete_ctx *complete_ctx;
+
+ lf = el_line(el);
+ if (el_get(el, EL_CLIENTDATA, (void**)&complete_ctx) != 0)
+ fatal("%s: el_get failed", __func__);
+
+ /* Figure out which argument the cursor points to */
+ cursor = lf->cursor - lf->buffer;
+ line = xmalloc(cursor + 1);
+ memcpy(line, lf->buffer, cursor);
+ line[cursor] = '\0';
+ argv = makeargv(line, &carg, 1, &quote, &terminated);
+ free(line);
+
+ /* Get all the arguments on the line */
+ len = lf->lastchar - lf->buffer;
+ line = xmalloc(len + 1);
+ memcpy(line, lf->buffer, len);
+ line[len] = '\0';
+ argv = makeargv(line, &argc, 1, NULL, NULL);
+
+ /* Ensure cursor is at EOL or a argument boundary */
+ if (line[cursor] != ' ' && line[cursor] != '\0' &&
+ line[cursor] != '\n') {
+ free(line);
+ return ret;
+ }
+
+ if (carg == 0) {
+ /* Show all available commands */
+ complete_cmd_parse(el, NULL, argc == carg, '\0', 1);
+ ret = CC_REDISPLAY;
+ } else if (carg == 1 && cursor > 0 && line[cursor - 1] != ' ') {
+ /* Handle the command parsing */
+ if (complete_cmd_parse(el, argv[0], argc == carg,
+ quote, terminated) != 0)
+ ret = CC_REDISPLAY;
+ } else if (carg >= 1) {
+ /* Handle file parsing */
+ int remote = complete_is_remote(argv[0]);
+ char *filematch = NULL;
+
+ if (carg > 1 && line[cursor-1] != ' ')
+ filematch = argv[carg - 1];
+
+ if (remote != 0 &&
+ complete_match(el, complete_ctx->conn,
+ *complete_ctx->remote_pathp, filematch,
+ remote, carg == argc, quote, terminated) != 0)
+ ret = CC_REDISPLAY;
+ }
+
+ free(line);
+ return ret;
+}
+#endif /* USE_LIBEDIT */
+
+static int
+interactive_loop(struct sftp_conn *conn, char *file1, char *file2)
+{
+ char *remote_path;
+ char *dir = NULL, *startdir = NULL;
+ char cmd[2048];
+ int err, interactive;
+ EditLine *el = NULL;
+#ifdef USE_LIBEDIT
+ History *hl = NULL;
+ HistEvent hev;
+ extern char *__progname;
+ struct complete_ctx complete_ctx;
+
+ if (!batchmode && isatty(STDIN_FILENO)) {
+ if ((el = el_init(__progname, stdin, stdout, stderr)) == NULL)
+ fatal("Couldn't initialise editline");
+ if ((hl = history_init()) == NULL)
+ fatal("Couldn't initialise editline history");
+ history(hl, &hev, H_SETSIZE, 100);
+ el_set(el, EL_HIST, history, hl);
+
+ el_set(el, EL_PROMPT, prompt);
+ el_set(el, EL_EDITOR, "emacs");
+ el_set(el, EL_TERMINAL, NULL);
+ el_set(el, EL_SIGNAL, 1);
+ el_source(el, NULL);
+
+ /* Tab Completion */
+ el_set(el, EL_ADDFN, "ftp-complete",
+ "Context sensitive argument completion", complete);
+ complete_ctx.conn = conn;
+ complete_ctx.remote_pathp = &remote_path;
+ el_set(el, EL_CLIENTDATA, (void*)&complete_ctx);
+ el_set(el, EL_BIND, "^I", "ftp-complete", NULL);
+ /* enable ctrl-left-arrow and ctrl-right-arrow */
+ el_set(el, EL_BIND, "\\e[1;5C", "em-next-word", NULL);
+ el_set(el, EL_BIND, "\\e\\e[C", "em-next-word", NULL);
+ el_set(el, EL_BIND, "\\e[1;5D", "ed-prev-word", NULL);
+ el_set(el, EL_BIND, "\\e\\e[D", "ed-prev-word", NULL);
+ /* make ^w match ksh behaviour */
+ el_set(el, EL_BIND, "^w", "ed-delete-prev-word", NULL);
+ }
+#endif /* USE_LIBEDIT */
+
+ remote_path = do_realpath(conn, ".");
+ if (remote_path == NULL)
+ fatal("Need cwd");
+ startdir = xstrdup(remote_path);
+
+ if (file1 != NULL) {
+ dir = xstrdup(file1);
+ dir = make_absolute(dir, remote_path);
+
+ if (remote_is_dir(conn, dir) && file2 == NULL) {
+ if (!quiet)
+ mprintf("Changing to: %s\n", dir);
+ snprintf(cmd, sizeof cmd, "cd \"%s\"", dir);
+ if (parse_dispatch_command(conn, cmd,
+ &remote_path, startdir, 1, 0) != 0) {
+ free(dir);
+ free(startdir);
+ free(remote_path);
+ free(conn);
+ return (-1);
+ }
+ } else {
+ /* XXX this is wrong wrt quoting */
+ snprintf(cmd, sizeof cmd, "get%s %s%s%s",
+ global_aflag ? " -a" : "", dir,
+ file2 == NULL ? "" : " ",
+ file2 == NULL ? "" : file2);
+ err = parse_dispatch_command(conn, cmd,
+ &remote_path, startdir, 1, 0);
+ free(dir);
+ free(startdir);
+ free(remote_path);
+ free(conn);
+ return (err);
+ }
+ free(dir);
+ }
+
+ setvbuf(stdout, NULL, _IOLBF, 0);
+ setvbuf(infile, NULL, _IOLBF, 0);
+
+ interactive = !batchmode && isatty(STDIN_FILENO);
+ err = 0;
+ for (;;) {
+ ssh_signal(SIGINT, SIG_IGN);
+
+ if (el == NULL) {
+ if (interactive)
+ printf("sftp> ");
+ if (fgets(cmd, sizeof(cmd), infile) == NULL) {
+ if (interactive)
+ printf("\n");
+ break;
+ }
+ } else {
+#ifdef USE_LIBEDIT
+ const char *line;
+ int count = 0;
+
+ if ((line = el_gets(el, &count)) == NULL ||
+ count <= 0) {
+ printf("\n");
+ break;
+ }
+ history(hl, &hev, H_ENTER, line);
+ if (strlcpy(cmd, line, sizeof(cmd)) >= sizeof(cmd)) {
+ fprintf(stderr, "Error: input line too long\n");
+ continue;
+ }
+#endif /* USE_LIBEDIT */
+ }
+
+ cmd[strcspn(cmd, "\n")] = '\0';
+
+ /* Handle user interrupts gracefully during commands */
+ interrupted = 0;
+ ssh_signal(SIGINT, cmd_interrupt);
+
+ err = parse_dispatch_command(conn, cmd, &remote_path,
+ startdir, batchmode, !interactive && el == NULL);
+ if (err != 0)
+ break;
+ }
+ ssh_signal(SIGCHLD, SIG_DFL);
+ free(remote_path);
+ free(startdir);
+ free(conn);
+
+#ifdef USE_LIBEDIT
+ if (el != NULL)
+ el_end(el);
+#endif /* USE_LIBEDIT */
+
+ /* err == 1 signifies normal "quit" exit */
+ return (err >= 0 ? 0 : -1);
+}
+
+static void
+connect_to_server(char *path, char **args, int *in, int *out)
+{
+ int c_in, c_out;
+
+#ifdef USE_PIPES
+ int pin[2], pout[2];
+
+ if ((pipe(pin) == -1) || (pipe(pout) == -1))
+ fatal("pipe: %s", strerror(errno));
+ *in = pin[0];
+ *out = pout[1];
+ c_in = pout[0];
+ c_out = pin[1];
+#else /* USE_PIPES */
+ int inout[2];
+
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
+ fatal("socketpair: %s", strerror(errno));
+ *in = *out = inout[0];
+ c_in = c_out = inout[1];
+#endif /* USE_PIPES */
+
+ if ((sshpid = fork()) == -1)
+ fatal("fork: %s", strerror(errno));
+ else if (sshpid == 0) {
+ if ((dup2(c_in, STDIN_FILENO) == -1) ||
+ (dup2(c_out, STDOUT_FILENO) == -1)) {
+ fprintf(stderr, "dup2: %s\n", strerror(errno));
+ _exit(1);
+ }
+ close(*in);
+ close(*out);
+ close(c_in);
+ close(c_out);
+
+ /*
+ * The underlying ssh is in the same process group, so we must
+ * ignore SIGINT if we want to gracefully abort commands,
+ * otherwise the signal will make it to the ssh process and
+ * kill it too. Contrawise, since sftp sends SIGTERMs to the
+ * underlying ssh, it must *not* ignore that signal.
+ */
+ ssh_signal(SIGINT, SIG_IGN);
+ ssh_signal(SIGTERM, SIG_DFL);
+ execvp(path, args);
+ fprintf(stderr, "exec: %s: %s\n", path, strerror(errno));
+ _exit(1);
+ }
+
+ ssh_signal(SIGTERM, killchild);
+ ssh_signal(SIGINT, killchild);
+ ssh_signal(SIGHUP, killchild);
+ ssh_signal(SIGTSTP, suspchild);
+ ssh_signal(SIGTTIN, suspchild);
+ ssh_signal(SIGTTOU, suspchild);
+ ssh_signal(SIGCHLD, sigchld_handler);
+ close(c_in);
+ close(c_out);
+}
+
+static void
+usage(void)
+{
+ extern char *__progname;
+
+ fprintf(stderr,
+ "usage: %s [-46AaCfNpqrv] [-B buffer_size] [-b batchfile] [-c cipher]\n"
+ " [-D sftp_server_path] [-F ssh_config] [-i identity_file]\n"
+ " [-J destination] [-l limit] [-o ssh_option] [-P port]\n"
+ " [-R num_requests] [-S program] [-s subsystem | sftp_server]\n"
+ " destination\n",
+ __progname);
+ exit(1);
+}
+
+int
+main(int argc, char **argv)
+{
+ int in, out, ch, err, tmp, port = -1, noisy = 0;
+ char *host = NULL, *user, *cp, *file2 = NULL;
+ int debug_level = 0;
+ char *file1 = NULL, *sftp_server = NULL;
+ char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
+ const char *errstr;
+ LogLevel ll = SYSLOG_LEVEL_INFO;
+ arglist args;
+ extern int optind;
+ extern char *optarg;
+ struct sftp_conn *conn;
+ size_t copy_buffer_len = DEFAULT_COPY_BUFLEN;
+ size_t num_requests = DEFAULT_NUM_REQUESTS;
+ long long limit_kbps = 0;
+
+ /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
+ sanitise_stdfd();
+ msetlocale();
+
+ seed_rng();
+
+ __progname = ssh_get_progname(argv[0]);
+ memset(&args, '\0', sizeof(args));
+ args.list = NULL;
+ addargs(&args, "%s", ssh_program);
+ addargs(&args, "-oForwardX11 no");
+ addargs(&args, "-oPermitLocalCommand no");
+ addargs(&args, "-oClearAllForwardings yes");
+
+ ll = SYSLOG_LEVEL_INFO;
+ infile = stdin;
+
+ while ((ch = getopt(argc, argv,
+ "1246AafhNpqrvCc:D:i:l:o:s:S:b:B:F:J:P:R:")) != -1) {
+ switch (ch) {
+ /* Passed through to ssh(1) */
+ case 'A':
+ case '4':
+ case '6':
+ case 'C':
+ addargs(&args, "-%c", ch);
+ break;
+ /* Passed through to ssh(1) with argument */
+ case 'F':
+ case 'J':
+ case 'c':
+ case 'i':
+ case 'o':
+ addargs(&args, "-%c", ch);
+ addargs(&args, "%s", optarg);
+ break;
+ case 'q':
+ ll = SYSLOG_LEVEL_ERROR;
+ quiet = 1;
+ showprogress = 0;
+ addargs(&args, "-%c", ch);
+ break;
+ case 'P':
+ port = a2port(optarg);
+ if (port <= 0)
+ fatal("Bad port \"%s\"\n", optarg);
+ break;
+ case 'v':
+ if (debug_level < 3) {
+ addargs(&args, "-v");
+ ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
+ }
+ debug_level++;
+ break;
+ case '1':
+ fatal("SSH protocol v.1 is no longer supported");
+ break;
+ case '2':
+ /* accept silently */
+ break;
+ case 'a':
+ global_aflag = 1;
+ break;
+ case 'B':
+ copy_buffer_len = strtol(optarg, &cp, 10);
+ if (copy_buffer_len == 0 || *cp != '\0')
+ fatal("Invalid buffer size \"%s\"", optarg);
+ break;
+ case 'b':
+ if (batchmode)
+ fatal("Batch file already specified.");
+
+ /* Allow "-" as stdin */
+ if (strcmp(optarg, "-") != 0 &&
+ (infile = fopen(optarg, "r")) == NULL)
+ fatal("%s (%s).", strerror(errno), optarg);
+ showprogress = 0;
+ quiet = batchmode = 1;
+ addargs(&args, "-obatchmode yes");
+ break;
+ case 'f':
+ global_fflag = 1;
+ break;
+ case 'N':
+ noisy = 1; /* Used to clear quiet mode after getopt */
+ break;
+ case 'p':
+ global_pflag = 1;
+ break;
+ case 'D':
+ sftp_direct = optarg;
+ break;
+ case 'l':
+ limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
+ &errstr);
+ if (errstr != NULL)
+ usage();
+ limit_kbps *= 1024; /* kbps */
+ break;
+ case 'r':
+ global_rflag = 1;
+ break;
+ case 'R':
+ num_requests = strtol(optarg, &cp, 10);
+ if (num_requests == 0 || *cp != '\0')
+ fatal("Invalid number of requests \"%s\"",
+ optarg);
+ break;
+ case 's':
+ sftp_server = optarg;
+ break;
+ case 'S':
+ ssh_program = optarg;
+ replacearg(&args, 0, "%s", ssh_program);
+ break;
+ case 'h':
+ default:
+ usage();
+ }
+ }
+
+ /* Do this last because we want the user to be able to override it */
+ addargs(&args, "-oForwardAgent no");
+
+ if (!isatty(STDERR_FILENO))
+ showprogress = 0;
+
+ if (noisy)
+ quiet = 0;
+
+ log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
+
+ if (sftp_direct == NULL) {
+ if (optind == argc || argc > (optind + 2))
+ usage();
+ argv += optind;
+
+ switch (parse_uri("sftp", *argv, &user, &host, &tmp, &file1)) {
+ case -1:
+ usage();
+ break;
+ case 0:
+ if (tmp != -1)
+ port = tmp;
+ break;
+ default:
+ /* Try with user, host and path. */
+ if (parse_user_host_path(*argv, &user, &host,
+ &file1) == 0)
+ break;
+ /* Try with user and host. */
+ if (parse_user_host_port(*argv, &user, &host, NULL)
+ == 0)
+ break;
+ /* Treat as a plain hostname. */
+ host = xstrdup(*argv);
+ host = cleanhostname(host);
+ break;
+ }
+ file2 = *(argv + 1);
+
+ if (!*host) {
+ fprintf(stderr, "Missing hostname\n");
+ usage();
+ }
+
+ if (port != -1)
+ addargs(&args, "-oPort %d", port);
+ if (user != NULL) {
+ addargs(&args, "-l");
+ addargs(&args, "%s", user);
+ }
+
+ /* no subsystem if the server-spec contains a '/' */
+ if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
+ addargs(&args, "-s");
+
+ addargs(&args, "--");
+ addargs(&args, "%s", host);
+ addargs(&args, "%s", (sftp_server != NULL ?
+ sftp_server : "sftp"));
+
+ connect_to_server(ssh_program, args.list, &in, &out);
+ } else {
+ args.list = NULL;
+ addargs(&args, "sftp-server");
+
+ connect_to_server(sftp_direct, args.list, &in, &out);
+ }
+ freeargs(&args);
+
+ conn = do_init(in, out, copy_buffer_len, num_requests, limit_kbps);
+ if (conn == NULL)
+ fatal("Couldn't initialise connection to server");
+
+ if (!quiet) {
+ if (sftp_direct == NULL)
+ fprintf(stderr, "Connected to %s.\n", host);
+ else
+ fprintf(stderr, "Attached to %s.\n", sftp_direct);
+ }
+
+ err = interactive_loop(conn, file1, file2);
+
+#if !defined(USE_PIPES)
+ shutdown(in, SHUT_RDWR);
+ shutdown(out, SHUT_RDWR);
+#endif
+
+ close(in);
+ close(out);
+ if (batchmode)
+ fclose(infile);
+
+ while (waitpid(sshpid, NULL, 0) == -1 && sshpid > 1)
+ if (errno != EINTR)
+ fatal("Couldn't wait for ssh process: %s",
+ strerror(errno));
+
+ exit(err == 0 ? 0 : 1);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 02:02:07 +0000