| 0,0 → 1,197 |
|---|
| /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * Neither the name of the original program's authors nor the names of its |
| * contributors may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /* NOTE: |
| * This is a bit of an ugly hack, working around the absence of fstat / etc. |
| * As more stuff is completed and exposed in libc, this will improve */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <dirent.h> |
| #include <fcntl.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <string.h> |
| |
| #include "errors.h" |
| #include "config.h" |
| #include "util.h" |
| #include "entry.h" |
| #include "ls.h" |
| #include "cmds.h" |
| |
| static char *cmdname = "ls"; |
| |
| unsigned int ls_scope(const char *path) |
| { |
| int fd; |
| DIR *dirp; |
| |
| dirp = opendir(path); |
| if (dirp) { |
| closedir(dirp); |
| return LS_DIR; |
| } |
| |
| fd = open(path, O_RDONLY); |
| if (fd > 0) { |
| close(fd); |
| return LS_FILE; |
| } |
| |
| return LS_BOGUS; |
| } |
| |
| void ls_scan_dir(const char *d, DIR *dirp) |
| { |
| struct dirent *dp; |
| unsigned int scope; |
| char *buff; |
| |
| if (! dirp) |
| return; |
| |
| buff = (char *)malloc(PATH_MAX); |
| if (NULL == buff) { |
| cli_error(CL_ENOMEM, "ls: failed to scan %s", d); |
| return; |
| } |
| |
| while ((dp = readdir(dirp))) { |
| memset(buff, 0, sizeof(buff)); |
| /* Don't worry if inserting a double slash, this will be fixed by |
| * absolutize() later with subsequent calls to open() or readdir() */ |
| snprintf(buff, PATH_MAX - 1, "%s/%s", d, dp->d_name); |
| scope = ls_scope(buff); |
| switch (scope) { |
| case LS_DIR: |
| ls_print_dir(dp->d_name); |
| break; |
| case LS_FILE: |
| ls_print_file(dp->d_name); |
| break; |
| case LS_BOGUS: |
| /* Odd chance it was deleted from the time readdir() found |
| * it and the time that it was scoped */ |
| printf("ls: skipping bogus node %s\n", dp->d_name); |
| break; |
| } |
| } |
| |
| free(buff); |
| |
| return; |
| } |
| |
| /* ls_print_* currently does nothing more than print the entry. |
| * in the future, we will likely pass the absolute path, and |
| * some sort of ls_options structure that controls how each |
| * entry is printed and what is printed about it. |
| * |
| * Now we just print basic DOS style lists */ |
| |
| void ls_print_dir(const char *d) |
| { |
| printf("%-40s\t<DIR>\n", d); |
| |
| return; |
| } |
| |
| void ls_print_file(const char *f) |
| { |
| printf("%-40s\n", f); |
| |
| return; |
| } |
| |
| void * help_cmd_ls(unsigned int level) |
| { |
| if (level == HELP_SHORT) { |
| printf("`%s' lists files and directories.\n", cmdname); |
| } else { |
| help_cmd_ls(HELP_SHORT); |
| printf(" `%s' [path], if no path is given the current " |
| "working directory is used.\n", cmdname); |
| } |
| |
| return CMD_VOID; |
| } |
| |
| int * cmd_ls(char **argv) |
| { |
| unsigned int argc; |
| unsigned int scope; |
| char *buff; |
| DIR *dirp; |
| |
| /* Count the arguments */ |
| for (argc = 0; argv[argc] != NULL; argc ++); |
| |
| buff = (char *) malloc(PATH_MAX); |
| if (NULL == buff) { |
| cli_error(CL_ENOMEM, "%s: ", cmdname); |
| return CMD_FAILURE; |
| } |
| memset(buff, 0, sizeof(buff)); |
| |
| if (argc == 1) |
| getcwd(buff, PATH_MAX); |
| else |
| strncpy(buff, argv[1], PATH_MAX); |
| |
| scope = ls_scope(buff); |
| |
| switch (scope) { |
| case LS_BOGUS: |
| cli_error(CL_ENOENT, buff); |
| free(buff); |
| return CMD_FAILURE; |
| case LS_FILE: |
| ls_print_file(buff); |
| break; |
| case LS_DIR: |
| dirp = opendir(buff); |
| if (! dirp) { |
| /* May have been deleted between scoping it and opening it */ |
| cli_error(CL_EFAIL, "Could not stat %s", buff); |
| free(buff); |
| return CMD_FAILURE; |
| } |
| ls_scan_dir(buff, dirp); |
| closedir(dirp); |
| break; |
| } |
| |
| free(buff); |
| |
| return CMD_SUCCESS; |
| } |
| |