Rev 3294 | Rev 3310 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3294 | post | 1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
| 2 | * All rights reserved. |
||
| 3277 | post | 3 | * |
| 3294 | post | 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
||
| 6 | * |
||
| 7 | * Redistributions of source code must retain the above copyright notice, this |
||
| 8 | * list of conditions and the following disclaimer. |
||
| 9 | * |
||
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
||
| 11 | * this list of conditions and the following disclaimer in the documentation |
||
| 12 | * and/or other materials provided with the distribution. |
||
| 13 | * |
||
| 14 | * Neither the name of the original program's authors nor the names of its |
||
| 15 | * contributors may be used to endorse or promote products derived from this |
||
| 16 | * software without specific prior written permission. |
||
| 17 | * |
||
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
||
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
||
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
||
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
||
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
||
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
||
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
||
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
||
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
||
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
||
| 29 | */ |
||
| 3277 | post | 30 | |
| 3294 | post | 31 | /* NOTE: |
| 32 | * This is a bit of an ugly hack, working around the absence of fstat / etc. |
||
| 33 | * As more stuff is completed and exposed in libc, this will improve */ |
||
| 3293 | post | 34 | |
| 3277 | post | 35 | #include <stdio.h> |
| 36 | #include <stdlib.h> |
||
| 3293 | post | 37 | #include <unistd.h> |
| 38 | #include <dirent.h> |
||
| 39 | #include <fcntl.h> |
||
| 40 | #include <sys/types.h> |
||
| 41 | #include <sys/stat.h> |
||
| 42 | #include <string.h> |
||
| 43 | |||
| 44 | #include "errors.h" |
||
| 45 | #include "config.h" |
||
| 46 | #include "util.h" |
||
| 3277 | post | 47 | #include "entry.h" |
| 48 | #include "ls.h" |
||
| 49 | #include "cmds.h" |
||
| 50 | |||
| 51 | static char *cmdname = "ls"; |
||
| 52 | |||
| 3293 | post | 53 | unsigned int ls_scope(const char *path) |
| 54 | { |
||
| 55 | int fd; |
||
| 56 | DIR *dirp; |
||
| 57 | |||
| 58 | dirp = opendir(path); |
||
| 59 | if (dirp) { |
||
| 60 | closedir(dirp); |
||
| 61 | return LS_DIR; |
||
| 62 | } |
||
| 63 | |||
| 64 | fd = open(path, O_RDONLY); |
||
| 65 | if (fd > 0) { |
||
| 66 | close(fd); |
||
| 67 | return LS_FILE; |
||
| 68 | } |
||
| 69 | |||
| 70 | return LS_BOGUS; |
||
| 71 | } |
||
| 72 | |||
| 73 | void ls_print(const char *f) |
||
| 74 | { |
||
| 3309 | post | 75 | unsigned int scope; |
| 76 | |||
| 77 | scope = ls_scope(f); |
||
| 78 | |||
| 79 | /* If this function is called in a readdir loop, LS_BOGUS |
||
| 80 | * can be treated as LS_FILE, since we aren't presenting |
||
| 81 | * the full path to open(), just pointer->d_name as obtained |
||
| 82 | * from opendir(). This will not happen if ../path/to/file |
||
| 83 | * is passed, as may be the argument to ls */ |
||
| 84 | |||
| 85 | switch (scope) { |
||
| 86 | case LS_DIR: |
||
| 87 | printf("%-40s <DIR>\n", f); |
||
| 88 | break; |
||
| 89 | case LS_FILE: |
||
| 3293 | post | 90 | printf("%-40s\n", f); |
| 3309 | post | 91 | break; |
| 92 | /* This is never reached unless in a readdir() loop */ |
||
| 93 | case LS_BOGUS: |
||
| 94 | printf("%-40s\n", f); |
||
| 95 | break; |
||
| 96 | } |
||
| 3293 | post | 97 | return; |
| 98 | } |
||
| 99 | |||
| 3277 | post | 100 | /* Dispays help for ls in various levels */ |
| 101 | void * help_cmd_ls(unsigned int level) |
||
| 102 | { |
||
| 3294 | post | 103 | if (level == HELP_SHORT) { |
| 104 | printf("`%s' lists files and directories.\n", cmdname); |
||
| 105 | } else { |
||
| 106 | help_cmd_ls(HELP_SHORT); |
||
| 107 | printf(" `%s' [path], if no path is given the current " |
||
| 108 | "working directory is used.\n", cmdname); |
||
| 109 | } |
||
| 110 | |||
| 3293 | post | 111 | return CMD_VOID; |
| 3277 | post | 112 | } |
| 113 | |||
| 114 | int * cmd_ls(char **argv) |
||
| 115 | { |
||
| 116 | unsigned int argc; |
||
| 3293 | post | 117 | unsigned int scope; |
| 118 | char *buff; |
||
| 3309 | post | 119 | char s[PATH_MAX]; |
| 3277 | post | 120 | |
| 3293 | post | 121 | DIR *dirp; |
| 122 | struct dirent *dp; |
||
| 123 | |||
| 3277 | post | 124 | /* Count the arguments */ |
| 125 | for (argc = 0; argv[argc] != NULL; argc ++); |
||
| 126 | |||
| 3293 | post | 127 | if (argc > 2) { |
| 128 | printf("%s - Too many arguments. Try `help %s extended'\n", |
||
| 129 | cmdname, cmdname); |
||
| 130 | return CMD_FAILURE; |
||
| 131 | } |
||
| 3277 | post | 132 | |
| 3293 | post | 133 | buff = (char *) malloc(PATH_MAX); |
| 134 | if (NULL == buff) { |
||
| 135 | cli_error(CL_ENOMEM, "%s: ", cmdname); |
||
| 136 | return CMD_FAILURE; |
||
| 3277 | post | 137 | } |
| 3293 | post | 138 | memset(buff, 0, sizeof(buff)); |
| 3277 | post | 139 | |
| 3293 | post | 140 | if (argc == 1) |
| 141 | getcwd(buff, PATH_MAX); |
||
| 142 | else |
||
| 143 | strncpy(buff, argv[1], PATH_MAX); |
||
| 3277 | post | 144 | |
| 3293 | post | 145 | scope = ls_scope(buff); |
| 146 | |||
| 147 | switch (scope) { |
||
| 148 | case LS_BOGUS: |
||
| 149 | cli_error(CL_ENOENT, buff); |
||
| 150 | free(buff); |
||
| 151 | return CMD_FAILURE; |
||
| 152 | case LS_FILE: |
||
| 153 | ls_print(buff); |
||
| 154 | break; |
||
| 155 | case LS_DIR: |
||
| 156 | dirp = opendir(buff); |
||
| 157 | while ((dp = readdir(dirp))) |
||
| 158 | ls_print(dp->d_name); |
||
| 159 | closedir(dirp); |
||
| 160 | break; |
||
| 161 | } |
||
| 162 | |||
| 163 | free(buff); |
||
| 164 | |||
| 165 | return CMD_SUCCESS; |
||
| 166 | |||
| 3277 | post | 167 | } |
| 168 |