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