Rev 3326 | Rev 3364 | 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 | |||
3326 | post | 73 | void ls_scan_dir(const char *d, DIR *dirp) |
3293 | post | 74 | { |
3326 | post | 75 | struct dirent *dp; |
3309 | post | 76 | unsigned int scope; |
3326 | post | 77 | char *buff; |
3309 | post | 78 | |
3326 | post | 79 | if (! dirp) |
80 | return; |
||
3309 | post | 81 | |
3326 | post | 82 | buff = (char *)malloc(PATH_MAX); |
83 | if (NULL == buff) { |
||
84 | cli_error(CL_ENOMEM, "ls: failed to scan %s", d); |
||
85 | return; |
||
86 | } |
||
3309 | post | 87 | |
3326 | post | 88 | while ((dp = readdir(dirp))) { |
89 | memset(buff, 0, sizeof(buff)); |
||
90 | /* Don't worry if inserting a double slash, this will be fixed by |
||
91 | * absolutize() later with subsequent calls to open() or readdir() */ |
||
92 | snprintf(buff, PATH_MAX - 1, "%s/%s", d, dp->d_name); |
||
93 | scope = ls_scope(buff); |
||
94 | switch (scope) { |
||
95 | case LS_DIR: |
||
96 | ls_print_dir(dp->d_name); |
||
97 | break; |
||
98 | case LS_FILE: |
||
99 | ls_print_file(dp->d_name); |
||
100 | break; |
||
101 | case LS_BOGUS: |
||
102 | /* Odd chance it was deleted from the time readdir() found |
||
103 | * it and the time that it was scoped */ |
||
104 | printf("ls: skipping bogus node %s\n", dp->d_name); |
||
105 | break; |
||
106 | } |
||
3309 | post | 107 | } |
3326 | post | 108 | |
109 | free(buff); |
||
110 | |||
3293 | post | 111 | return; |
112 | } |
||
113 | |||
3326 | post | 114 | /* ls_print_* currently does nothing more than print the entry. |
115 | * in the future, we will likely pass the absolute path, and |
||
116 | * some sort of ls_options structure that controls how each |
||
117 | * entry is printed and what is printed about it. |
||
118 | * |
||
119 | * Now we just print basic DOS style lists */ |
||
120 | |||
121 | void ls_print_dir(const char *d) |
||
122 | { |
||
123 | printf("%-40s\t<DIR>\n", d); |
||
124 | |||
125 | return; |
||
126 | } |
||
127 | |||
128 | void ls_print_file(const char *f) |
||
129 | { |
||
130 | printf("%-40s\n", f); |
||
131 | |||
132 | return; |
||
133 | } |
||
134 | |||
3277 | post | 135 | void * help_cmd_ls(unsigned int level) |
136 | { |
||
3294 | post | 137 | if (level == HELP_SHORT) { |
138 | printf("`%s' lists files and directories.\n", cmdname); |
||
139 | } else { |
||
140 | help_cmd_ls(HELP_SHORT); |
||
141 | printf(" `%s' [path], if no path is given the current " |
||
142 | "working directory is used.\n", cmdname); |
||
143 | } |
||
144 | |||
3293 | post | 145 | return CMD_VOID; |
3277 | post | 146 | } |
147 | |||
148 | int * cmd_ls(char **argv) |
||
149 | { |
||
150 | unsigned int argc; |
||
3293 | post | 151 | unsigned int scope; |
152 | char *buff; |
||
153 | DIR *dirp; |
||
154 | |||
3277 | post | 155 | /* Count the arguments */ |
156 | for (argc = 0; argv[argc] != NULL; argc ++); |
||
157 | |||
3293 | post | 158 | buff = (char *) malloc(PATH_MAX); |
159 | if (NULL == buff) { |
||
160 | cli_error(CL_ENOMEM, "%s: ", cmdname); |
||
161 | return CMD_FAILURE; |
||
3277 | post | 162 | } |
3293 | post | 163 | memset(buff, 0, sizeof(buff)); |
3277 | post | 164 | |
3293 | post | 165 | if (argc == 1) |
166 | getcwd(buff, PATH_MAX); |
||
167 | else |
||
168 | strncpy(buff, argv[1], PATH_MAX); |
||
3277 | post | 169 | |
3293 | post | 170 | scope = ls_scope(buff); |
171 | |||
172 | switch (scope) { |
||
173 | case LS_BOGUS: |
||
174 | cli_error(CL_ENOENT, buff); |
||
175 | free(buff); |
||
176 | return CMD_FAILURE; |
||
177 | case LS_FILE: |
||
3326 | post | 178 | ls_print_file(buff); |
3293 | post | 179 | break; |
180 | case LS_DIR: |
||
181 | dirp = opendir(buff); |
||
3326 | post | 182 | if (! dirp) { |
183 | /* May have been deleted between scoping it and opening it */ |
||
184 | cli_error(CL_EFAIL, "Could not stat %s", buff); |
||
185 | free(buff); |
||
186 | return CMD_FAILURE; |
||
187 | } |
||
188 | ls_scan_dir(buff, dirp); |
||
3293 | post | 189 | closedir(dirp); |
190 | break; |
||
191 | } |
||
192 | |||
193 | free(buff); |
||
194 | |||
195 | return CMD_SUCCESS; |
||
3277 | post | 196 | } |
197 |