=================================================================== RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/sftp.c,v retrieving revision 1.43 retrieving revision 1.44 diff -u -r1.43 -r1.44 --- src/usr.bin/ssh/sftp.c 2004/02/17 07:17:29 1.43 +++ src/usr.bin/ssh/sftp.c 2004/02/17 11:03:08 1.44 @@ -16,8 +16,10 @@ #include "includes.h" -RCSID("$OpenBSD: sftp.c,v 1.43 2004/02/17 07:17:29 djm Exp $"); +RCSID("$OpenBSD: sftp.c,v 1.44 2004/02/17 11:03:08 djm Exp $"); +#include + #include "buffer.h" #include "xmalloc.h" #include "log.h" @@ -28,15 +30,1171 @@ #include "sftp-common.h" #include "sftp-client.h" -int interactive_loop(int, int, char *, char *); /* sftp-int.c */ - +/* File to read commands from */ FILE* infile; + +/* Are we in batchfile mode? */ int batchmode = 0; + +/* Size of buffer used when copying files */ size_t copy_buffer_len = 32768; + +/* Number of concurrent outstanding requests */ size_t num_requests = 16; + +/* PID of ssh transport process */ static pid_t sshpid = -1; -extern int showprogress; +/* This is set to 0 if the progressmeter is not desired. */ +int showprogress; + +int remote_glob(struct sftp_conn *, const char *, int, + int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */ + +/* Separators for interactive commands */ +#define WHITESPACE " \t\r\n" + +/* Define what type of ls view (0 - multi-column) */ +#define LONG_VIEW 1 /* Full view ala ls -l */ +#define SHORT_VIEW 2 /* Single row view ala ls -1 */ + +/* Commands for interactive mode */ +#define I_CHDIR 1 +#define I_CHGRP 2 +#define I_CHMOD 3 +#define I_CHOWN 4 +#define I_GET 5 +#define I_HELP 6 +#define I_LCHDIR 7 +#define I_LLS 8 +#define I_LMKDIR 9 +#define I_LPWD 10 +#define I_LS 11 +#define I_LUMASK 12 +#define I_MKDIR 13 +#define I_PUT 14 +#define I_PWD 15 +#define I_QUIT 16 +#define I_RENAME 17 +#define I_RM 18 +#define I_RMDIR 19 +#define I_SHELL 20 +#define I_SYMLINK 21 +#define I_VERSION 22 +#define I_PROGRESS 23 + +struct CMD { + const char *c; + const int n; +}; + +static const struct CMD cmds[] = { + { "bye", I_QUIT }, + { "cd", I_CHDIR }, + { "chdir", I_CHDIR }, + { "chgrp", I_CHGRP }, + { "chmod", I_CHMOD }, + { "chown", I_CHOWN }, + { "dir", I_LS }, + { "exit", I_QUIT }, + { "get", I_GET }, + { "mget", I_GET }, + { "help", I_HELP }, + { "lcd", I_LCHDIR }, + { "lchdir", I_LCHDIR }, + { "lls", I_LLS }, + { "lmkdir", I_LMKDIR }, + { "ln", I_SYMLINK }, + { "lpwd", I_LPWD }, + { "ls", I_LS }, + { "lumask", I_LUMASK }, + { "mkdir", I_MKDIR }, + { "progress", I_PROGRESS }, + { "put", I_PUT }, + { "mput", I_PUT }, + { "pwd", I_PWD }, + { "quit", I_QUIT }, + { "rename", I_RENAME }, + { "rm", I_RM }, + { "rmdir", I_RMDIR }, + { "symlink", I_SYMLINK }, + { "version", I_VERSION }, + { "!", I_SHELL }, + { "?", I_HELP }, + { NULL, -1} +}; + +int interactive_loop(int fd_in, int fd_out, char *file1, char *file2); + +static void +help(void) +{ + printf("Available commands:\n"); + printf("cd path Change remote directory to 'path'\n"); + printf("lcd path Change local directory to 'path'\n"); + printf("chgrp grp path Change group of file 'path' to 'grp'\n"); + printf("chmod mode path Change permissions of file 'path' to 'mode'\n"); + printf("chown own path Change owner of file 'path' to 'own'\n"); + printf("help Display this help text\n"); + printf("get remote-path [local-path] Download file\n"); + printf("lls [ls-options [path]] Display local directory listing\n"); + printf("ln oldpath newpath Symlink remote file\n"); + printf("lmkdir path Create local directory\n"); + printf("lpwd Print local working directory\n"); + printf("ls [path] Display remote directory listing\n"); + printf("lumask umask Set local umask to 'umask'\n"); + printf("mkdir path Create remote directory\n"); + printf("progress Toggle display of progress meter\n"); + printf("put local-path [remote-path] Upload file\n"); + printf("pwd Display remote working directory\n"); + printf("exit Quit sftp\n"); + printf("quit Quit sftp\n"); + printf("rename oldpath newpath Rename remote file\n"); + printf("rmdir path Remove remote directory\n"); + printf("rm path Delete remote file\n"); + printf("symlink oldpath newpath Symlink remote file\n"); + printf("version Show SFTP version\n"); + printf("!command Execute 'command' in local shell\n"); + printf("! Escape to local shell\n"); + printf("? 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 = _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 abormally"); + 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); + xfree(buf); + } +} + +/* Strip one path (usually the pwd) from the start of another */ +static char * +path_strip(char *path, char *strip) +{ + size_t len; + + if (strip == NULL) + return (xstrdup(path)); + + len = strlen(strip); + if (strip != NULL && strncmp(path, strip, len) == 0) { + if (strip[len - 1] != '/' && path[len] == '/') + len++; + return (xstrdup(path + len)); + } + + return (xstrdup(path)); +} + +static char * +path_append(char *p1, char *p2) +{ + char *ret; + int len = strlen(p1) + strlen(p2) + 2; + + ret = xmalloc(len); + strlcpy(ret, p1, len); + if (p1[strlen(p1) - 1] != '/') + strlcat(ret, "/", len); + strlcat(ret, p2, len); + + return(ret); +} + +static char * +make_absolute(char *p, char *pwd) +{ + char *abs; + + /* Derelativise */ + if (p && p[0] != '/') { + abs = path_append(pwd, p); + xfree(p); + return(abs); + } else + return(p); +} + +static int +infer_path(const char *p, char **ifp) +{ + char *cp; + + cp = strrchr(p, '/'); + if (cp == NULL) { + *ifp = xstrdup(p); + return(0); + } + + if (!cp[1]) { + error("Invalid path"); + return(-1); + } + + *ifp = xstrdup(cp + 1); + return(0); +} + +static int +parse_getput_flags(const char **cpp, int *pflag) +{ + const char *cp = *cpp; + + /* Check for flags */ + if (cp[0] == '-' && cp[1] && strchr(WHITESPACE, cp[2])) { + switch (cp[1]) { + case 'p': + case 'P': + *pflag = 1; + break; + default: + error("Invalid flag -%c", cp[1]); + return(-1); + } + cp += 2; + *cpp = cp + strspn(cp, WHITESPACE); + } + + return(0); +} + +static int +parse_ls_flags(const char **cpp, int *lflag) +{ + const char *cp = *cpp; + + /* Check for flags */ + if (cp++[0] == '-') { + for(; strchr(WHITESPACE, *cp) == NULL; cp++) { + switch (*cp) { + case 'l': + *lflag = LONG_VIEW; + break; + case '1': + *lflag = SHORT_VIEW; + break; + default: + error("Invalid flag -%c", *cp); + return(-1); + } + } + *cpp = cp + strspn(cp, WHITESPACE); + } + + return(0); +} + +static int +get_pathname(const char **cpp, char **path) +{ + const char *cp = *cpp, *end; + char quot; + int i, j; + + cp += strspn(cp, WHITESPACE); + if (!*cp) { + *cpp = cp; + *path = NULL; + return (0); + } + + *path = xmalloc(strlen(cp) + 1); + + /* Check for quoted filenames */ + if (*cp == '\"' || *cp == '\'') { + quot = *cp++; + + /* Search for terminating quote, unescape some chars */ + for (i = j = 0; i <= strlen(cp); i++) { + if (cp[i] == quot) { /* Found quote */ + i++; + (*path)[j] = '\0'; + break; + } + if (cp[i] == '\0') { /* End of string */ + error("Unterminated quote"); + goto fail; + } + if (cp[i] == '\\') { /* Escaped characters */ + i++; + if (cp[i] != '\'' && cp[i] != '\"' && + cp[i] != '\\') { + error("Bad escaped character '\%c'", + cp[i]); + goto fail; + } + } + (*path)[j++] = cp[i]; + } + + if (j == 0) { + error("Empty quotes"); + goto fail; + } + *cpp = cp + i + strspn(cp + i, WHITESPACE); + } else { + /* Read to end of filename */ + end = strpbrk(cp, WHITESPACE); + if (end == NULL) + end = strchr(cp, '\0'); + *cpp = end + strspn(end, WHITESPACE); + + memcpy(*path, cp, end - cp); + (*path)[end - cp] = '\0'; + } + return (0); + + fail: + xfree(*path); + *path = NULL; + return (-1); +} + +static int +is_dir(char *path) +{ + struct stat sb; + + /* XXX: report errors? */ + if (stat(path, &sb) == -1) + return(0); + + return(sb.st_mode & S_IFDIR); +} + +static int +is_reg(char *path) +{ + struct stat sb; + + if (stat(path, &sb) == -1) + fatal("stat %s: %s", path, strerror(errno)); + + return(S_ISREG(sb.st_mode)); +} + +static int +remote_is_dir(struct sftp_conn *conn, 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(a->perm & S_IFDIR); +} + +static int +process_get(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag) +{ + char *abs_src = NULL; + char *abs_dst = NULL; + char *tmp; + glob_t g; + int err = 0; + int i; + + abs_src = xstrdup(src); + abs_src = make_absolute(abs_src, pwd); + + memset(&g, 0, sizeof(g)); + debug3("Looking up %s", abs_src); + if (remote_glob(conn, abs_src, 0, NULL, &g)) { + error("File \"%s\" not found.", abs_src); + err = -1; + goto out; + } + + /* If multiple matches, dst must be a directory or unspecified */ + if (g.gl_matchc > 1 && dst && !is_dir(dst)) { + error("Multiple files match, but \"%s\" is not a directory", + dst); + err = -1; + goto out; + } + + for (i = 0; g.gl_pathv[i]; i++) { + if (infer_path(g.gl_pathv[i], &tmp)) { + err = -1; + goto out; + } + + if (g.gl_matchc == 1 && dst) { + /* If directory specified, append filename */ + if (is_dir(dst)) { + if (infer_path(g.gl_pathv[0], &tmp)) { + err = 1; + goto out; + } + abs_dst = path_append(dst, tmp); + xfree(tmp); + } else + abs_dst = xstrdup(dst); + } else if (dst) { + abs_dst = path_append(dst, tmp); + xfree(tmp); + } else + abs_dst = tmp; + + printf("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); + if (do_download(conn, g.gl_pathv[i], abs_dst, pflag) == -1) + err = -1; + xfree(abs_dst); + abs_dst = NULL; + } + +out: + xfree(abs_src); + if (abs_dst) + xfree(abs_dst); + globfree(&g); + return(err); +} + +static int +process_put(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag) +{ + char *tmp_dst = NULL; + char *abs_dst = NULL; + char *tmp; + glob_t g; + int err = 0; + int i; + + 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, 0, NULL, &g)) { + error("File \"%s\" not found.", src); + err = -1; + goto out; + } + + /* If multiple matches, dst may be directory or unspecified */ + if (g.gl_matchc > 1 && tmp_dst && !remote_is_dir(conn, tmp_dst)) { + error("Multiple files match, but \"%s\" is not a directory", + tmp_dst); + err = -1; + goto out; + } + + for (i = 0; g.gl_pathv[i]; i++) { + if (!is_reg(g.gl_pathv[i])) { + error("skipping non-regular file %s", + g.gl_pathv[i]); + continue; + } + if (infer_path(g.gl_pathv[i], &tmp)) { + err = -1; + goto out; + } + + if (g.gl_matchc == 1 && tmp_dst) { + /* If directory specified, append filename */ + if (remote_is_dir(conn, tmp_dst)) { + if (infer_path(g.gl_pathv[0], &tmp)) { + err = 1; + goto out; + } + abs_dst = path_append(tmp_dst, tmp); + xfree(tmp); + } else + abs_dst = xstrdup(tmp_dst); + + } else if (tmp_dst) { + abs_dst = path_append(tmp_dst, tmp); + xfree(tmp); + } else + abs_dst = make_absolute(tmp, pwd); + + printf("Uploading %s to %s\n", g.gl_pathv[i], abs_dst); + if (do_upload(conn, g.gl_pathv[i], abs_dst, pflag) == -1) + err = -1; + } + +out: + if (abs_dst) + xfree(abs_dst); + if (tmp_dst) + xfree(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; + + return (strcmp(a->filename, b->filename)); +} + +/* sftp ls.1 replacement for directories */ +static int +do_ls_dir(struct sftp_conn *conn, char *path, char *strip_path, int lflag) +{ + int n, c = 1, colspace = 0, columns = 1; + SFTP_DIRENT **d; + + if ((n = do_readdir(conn, path, &d)) != 0) + return (n); + + if (!(lflag & SHORT_VIEW)) { + 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++) + m = MAX(m, strlen(d[n]->filename)); + + /* Add any subpath that also needs to be counted */ + tmp = path_strip(path, strip_path); + m += strlen(tmp); + xfree(tmp); + + if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1) + width = ws.ws_col; + + columns = width / (m + 2); + columns = MAX(columns, 1); + colspace = width / columns; + colspace = MIN(colspace, width); + } + + qsort(d, n, sizeof(*d), sdirent_comp); + + for (n = 0; d[n] != NULL; n++) { + char *tmp, *fname; + + tmp = path_append(path, d[n]->filename); + fname = path_strip(tmp, strip_path); + xfree(tmp); + + if (lflag & LONG_VIEW) { + char *lname; + struct stat sb; + + memset(&sb, 0, sizeof(sb)); + attrib_to_stat(&d[n]->a, &sb); + lname = ls_file(fname, &sb, 1); + printf("%s\n", lname); + xfree(lname); + } else { + printf("%-*s", colspace, fname); + if (c >= columns) { + printf("\n"); + c = 1; + } else + c++; + } + + xfree(fname); + } + + if (!(lflag & LONG_VIEW) && (c != 1)) + printf("\n"); + + free_sftp_dirents(d); + return (0); +} + +/* sftp ls.1 replacement which handles path globs */ +static int +do_globbed_ls(struct sftp_conn *conn, char *path, char *strip_path, + int lflag) +{ + glob_t g; + int i, c = 1, colspace = 0, columns = 1; + Attrib *a; + + memset(&g, 0, sizeof(g)); + + if (remote_glob(conn, path, GLOB_MARK|GLOB_NOCHECK|GLOB_BRACE, + NULL, &g)) { + error("Can't ls: \"%s\" not found", path); + return (-1); + } + + /* + * If the glob returns a single match, which is the same as the + * input glob, and it is a directory, then just list its contents + */ + if (g.gl_pathc == 1 && + strncmp(path, g.gl_pathv[0], strlen(g.gl_pathv[0]) - 1) == 0) { + if ((a = do_lstat(conn, path, 1)) == NULL) { + globfree(&g); + return (-1); + } + if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && + S_ISDIR(a->perm)) { + globfree(&g); + return (do_ls_dir(conn, path, strip_path, lflag)); + } + } + + if (!(lflag & SHORT_VIEW)) { + int m = 0, width = 80; + struct winsize ws; + + /* Count entries for sort and find longest filename */ + for (i = 0; g.gl_pathv[i]; i++) + m = MAX(m, strlen(g.gl_pathv[i])); + + if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1) + width = ws.ws_col; + + columns = width / (m + 2); + columns = MAX(columns, 1); + colspace = width / columns; + } + + for (i = 0; g.gl_pathv[i]; i++) { + char *fname; + + fname = path_strip(g.gl_pathv[i], strip_path); + + if (lflag & LONG_VIEW) { + char *lname; + struct stat sb; + + /* + * XXX: this is slow - 1 roundtrip per path + * A solution to this is to fork glob() and + * build a sftp specific version which keeps the + * attribs (which currently get thrown away) + * that the server returns as well as the filenames. + */ + memset(&sb, 0, sizeof(sb)); + a = do_lstat(conn, g.gl_pathv[i], 1); + if (a != NULL) + attrib_to_stat(a, &sb); + lname = ls_file(fname, &sb, 1); + printf("%s\n", lname); + xfree(lname); + } else { + printf("%-*s", colspace, fname); + if (c >= columns) { + printf("\n"); + c = 1; + } else + c++; + } + xfree(fname); + } + + if (!(lflag & LONG_VIEW) && (c != 1)) + printf("\n"); + + if (g.gl_pathc) + globfree(&g); + + return (0); +} + +static int +parse_args(const char **cpp, int *pflag, int *lflag, int *iflag, + unsigned long *n_arg, char **path1, char **path2) +{ + const char *cmd, *cp = *cpp; + char *cp2; + int base = 0; + long l; + int i, cmdnum; + + /* Skip leading whitespace */ + cp = cp + strspn(cp, WHITESPACE); + + /* Ignore blank lines and lines which begin with comment '#' char */ + if (*cp == '\0' || *cp == '#') + return (0); + + /* Check for leading '-' (disable error processing) */ + *iflag = 0; + if (*cp == '-') { + *iflag = 1; + cp++; + } + + /* Figure out which command we have */ + for (i = 0; cmds[i].c; i++) { + int cmdlen = strlen(cmds[i].c); + + /* Check for command followed by whitespace */ + if (!strncasecmp(cp, cmds[i].c, cmdlen) && + strchr(WHITESPACE, cp[cmdlen])) { + cp += cmdlen; + cp = cp + strspn(cp, WHITESPACE); + 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 */ + *lflag = *pflag = *n_arg = 0; + *path1 = *path2 = NULL; + switch (cmdnum) { + case I_GET: + case I_PUT: + if (parse_getput_flags(&cp, pflag)) + return(-1); + /* Get first pathname (mandatory) */ + if (get_pathname(&cp, path1)) + return(-1); + if (*path1 == NULL) { + error("You must specify at least one path after a " + "%s command.", cmd); + return(-1); + } + /* Try to get second pathname (optional) */ + if (get_pathname(&cp, path2)) + return(-1); + break; + case I_RENAME: + case I_SYMLINK: + if (get_pathname(&cp, path1)) + return(-1); + if (get_pathname(&cp, path2)) + return(-1); + if (!*path1 || !*path2) { + error("You must specify two paths after a %s " + "command.", cmd); + return(-1); + } + break; + case I_RM: + case I_MKDIR: + case I_RMDIR: + case I_CHDIR: + case I_LCHDIR: + case I_LMKDIR: + /* Get pathname (mandatory) */ + if (get_pathname(&cp, path1)) + return(-1); + if (*path1 == NULL) { + error("You must specify a path after a %s command.", + cmd); + return(-1); + } + break; + case I_LS: + if (parse_ls_flags(&cp, lflag)) + return(-1); + /* Path is optional */ + if (get_pathname(&cp, path1)) + return(-1); + break; + case I_LLS: + case I_SHELL: + /* Uses the rest of the line */ + break; + case I_LUMASK: + base = 8; + case I_CHMOD: + base = 8; + case I_CHOWN: + case I_CHGRP: + /* Get numeric arg (mandatory) */ + l = strtol(cp, &cp2, base); + if (cp2 == cp || ((l == LONG_MIN || l == LONG_MAX) && + errno == ERANGE) || l < 0) { + error("You must supply a numeric argument " + "to the %s command.", cmd); + return(-1); + } + cp = cp2; + *n_arg = l; + if (cmdnum == I_LUMASK && strchr(WHITESPACE, *cp)) + break; + if (cmdnum == I_LUMASK || !strchr(WHITESPACE, *cp)) { + error("You must supply a numeric argument " + "to the %s command.", cmd); + return(-1); + } + cp += strspn(cp, WHITESPACE); + + /* Get pathname (mandatory) */ + if (get_pathname(&cp, path1)) + return(-1); + if (*path1 == NULL) { + error("You must specify a path after a %s command.", + cmd); + return(-1); + } + break; + case I_QUIT: + case I_PWD: + case I_LPWD: + case I_HELP: + case I_VERSION: + case I_PROGRESS: + break; + default: + fatal("Command not implemented"); + } + + *cpp = cp; + return(cmdnum); +} + +static int +parse_dispatch_command(struct sftp_conn *conn, const char *cmd, char **pwd, + int err_abort) +{ + char *path1, *path2, *tmp; + int pflag, lflag, iflag, cmdnum, i; + unsigned long n_arg; + Attrib a, *aa; + char path_buf[MAXPATHLEN]; + int err = 0; + glob_t g; + + path1 = path2 = NULL; + cmdnum = parse_args(&cmd, &pflag, &lflag, &iflag, &n_arg, + &path1, &path2); + + if (iflag != 0) + err_abort = 0; + + memset(&g, 0, sizeof(g)); + + /* Perform command */ + switch (cmdnum) { + case 0: + /* Blank line */ + break; + case -1: + /* Unrecognized command */ + err = -1; + break; + case I_GET: + err = process_get(conn, path1, path2, *pwd, pflag); + break; + case I_PUT: + err = process_put(conn, path1, path2, *pwd, pflag); + break; + case I_RENAME: + path1 = make_absolute(path1, *pwd); + path2 = make_absolute(path2, *pwd); + err = do_rename(conn, path1, path2); + break; + case I_SYMLINK: + path2 = make_absolute(path2, *pwd); + err = do_symlink(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]; i++) { + printf("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); + break; + case I_RMDIR: + path1 = make_absolute(path1, *pwd); + err = do_rmdir(conn, path1); + break; + case I_CHDIR: + path1 = make_absolute(path1, *pwd); + if ((tmp = do_realpath(conn, path1)) == NULL) { + err = 1; + break; + } + if ((aa = do_stat(conn, tmp, 0)) == NULL) { + xfree(tmp); + err = 1; + break; + } + if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) { + error("Can't change directory: Can't check target"); + xfree(tmp); + err = 1; + break; + } + if (!S_ISDIR(aa->perm)) { + error("Can't change directory: \"%s\" is not " + "a directory", tmp); + xfree(tmp); + err = 1; + break; + } + xfree(*pwd); + *pwd = tmp; + break; + case I_LS: + if (!path1) { + do_globbed_ls(conn, *pwd, *pwd, lflag); + break; + } + + /* Strip pwd off beginning of non-absolute paths */ + tmp = NULL; + if (*path1 != '/') + tmp = *pwd; + + path1 = make_absolute(path1, *pwd); + err = do_globbed_ls(conn, path1, tmp, lflag); + break; + case I_LCHDIR: + 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]; i++) { + printf("Changing mode on %s\n", g.gl_pathv[i]); + err = 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]; i++) { + if (!(aa = do_stat(conn, g.gl_pathv[i], 0))) { + if (err != 0 && err_abort) + 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 != 0 && err_abort) + break; + else + continue; + } + aa->flags &= SSH2_FILEXFER_ATTR_UIDGID; + if (cmdnum == I_CHOWN) { + printf("Changing owner on %s\n", g.gl_pathv[i]); + aa->uid = n_arg; + } else { + printf("Changing group on %s\n", g.gl_pathv[i]); + aa->gid = n_arg; + } + err = do_setstat(conn, g.gl_pathv[i], aa); + if (err != 0 && err_abort) + break; + } + break; + case I_PWD: + printf("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; + } + printf("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); + if (path1) + xfree(path1); + if (path2) + xfree(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); +} + +int +interactive_loop(int fd_in, int fd_out, char *file1, char *file2) +{ + char *pwd; + char *dir = NULL; + char cmd[2048]; + struct sftp_conn *conn; + int err; + + conn = do_init(fd_in, fd_out, copy_buffer_len, num_requests); + if (conn == NULL) + fatal("Couldn't initialise connection to server"); + + pwd = do_realpath(conn, "."); + if (pwd == NULL) + fatal("Need cwd"); + + if (file1 != NULL) { + dir = xstrdup(file1); + dir = make_absolute(dir, pwd); + + if (remote_is_dir(conn, dir) && file2 == NULL) { + printf("Changing to: %s\n", dir); + snprintf(cmd, sizeof cmd, "cd \"%s\"", dir); + if (parse_dispatch_command(conn, cmd, &pwd, 1) != 0) + return (-1); + } else { + if (file2 == NULL) + snprintf(cmd, sizeof cmd, "get %s", dir); + else + snprintf(cmd, sizeof cmd, "get %s %s", dir, + file2); + + err = parse_dispatch_command(conn, cmd, &pwd, 1); + xfree(dir); + xfree(pwd); + return (err); + } + xfree(dir); + } + + setvbuf(stdout, NULL, _IOLBF, 0); + setvbuf(infile, NULL, _IOLBF, 0); + + err = 0; + for (;;) { + char *cp; + + printf("sftp> "); + + /* XXX: use libedit */ + if (fgets(cmd, sizeof(cmd), infile) == NULL) { + printf("\n"); + break; + } + + if (batchmode) /* Echo command */ + printf("%s", cmd); + + cp = strrchr(cmd, '\n'); + if (cp) + *cp = '\0'; + + err = parse_dispatch_command(conn, cmd, &pwd, batchmode); + if (err != 0) + break; + } + xfree(pwd); + + /* err == 1 signifies normal "quit" exit */ + return (err >= 0 ? 0 : -1); +} static void killchild(int signo)