Rev 3267 | Go to most recent revision | Details | Last modification | View Log | RSS feed
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| 3265 | post | 1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
| 2 | * All rights reserved. |
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| 3 | * |
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| 4 | * Redistribution and use in source and binary forms, with or without |
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| 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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| 30 | |||
| 31 | #include <stdio.h> |
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| 32 | #include <stdlib.h> |
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| 33 | #include <unistd.h> |
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| 34 | #include <string.h> |
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| 35 | #include <sys/errno.h> |
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| 36 | #include "util.h" |
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| 37 | #include "errors.h" |
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| 38 | #include "entry.h" |
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| 39 | #include "cmds.h" |
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| 40 | #include "cd.h" |
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| 41 | |||
| 42 | static char * cmdname = "cd"; |
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| 43 | |||
| 44 | void * help_cmd_cd(unsigned int level) |
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| 45 | { |
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| 46 | if (level == HELP_SHORT) { |
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| 47 | printf("`%s' changes the current working directory.\n", cmdname); |
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| 48 | } else { |
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| 49 | printf( |
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| 50 | " %s [-L|-P] [dir]\n" |
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| 51 | " Your home directory is the default if [dir] is not provided.\n" |
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| 52 | " The -P option specifies to always use the physical directory\n" |
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| 53 | " structure instead of following symbolic links. The -L option\n" |
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| 54 | " is the exact reverse of -P, symbolic links will be forced.\n" |
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| 55 | " Note: -L|-P are not yet implemented\n", cmdname); |
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| 56 | } |
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| 57 | |||
| 58 | return CMD_VOID; |
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| 59 | } |
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| 60 | |||
| 61 | /* This is a very rudamentary 'cd' command. It is not 'link smart' (yet) */ |
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| 62 | |||
| 63 | int * cmd_cd(char *argv[], cliuser_t *usr) |
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| 64 | { |
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| 65 | int argc, rc = 0; |
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| 66 | char *dest = NULL; |
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| 67 | |||
| 68 | for (argc = 0; argv[argc] != NULL; argc ++); |
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| 69 | |||
| 70 | /* Someone just typed 'cd' , send them home */ |
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| 71 | |||
| 72 | if (argc < 2) |
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| 73 | dest = cli_strdup(usr->home); |
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| 74 | |||
| 75 | /* We don't yet play nice with whitespace, a getopt implementation should |
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| 76 | * protect "quoted\ destination" as a single argument. Its not our job to |
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| 77 | * look for && || or redirection as the tokenizer should have done that |
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| 78 | * (currently, it does not) */ |
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| 79 | |||
| 80 | if (argc > 2) { |
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| 81 | cli_error(CL_EFAIL, "Too many arguments to `%s'", cmdname); |
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| 82 | return CMD_FAILURE; |
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| 83 | } |
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| 84 | |||
| 85 | /* We have the correct # of arguments |
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| 86 | * TODO: handle tidle (~) expansion? */ |
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| 87 | |||
| 88 | if (argc == 2) |
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| 89 | dest = cli_strdup(argv[1]); |
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| 90 | |||
| 91 | rc = chdir(dest); |
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| 92 | if (rc == 0) { |
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| 93 | free(dest); |
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| 94 | return CMD_SUCCESS; |
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| 95 | } else { |
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| 96 | free(dest); |
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| 97 | switch (rc) { |
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| 98 | case ENOMEM: |
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| 99 | cli_error(CL_EFAIL, "Destination path too long"); |
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| 100 | break; |
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| 101 | case ENOENT: |
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| 102 | cli_error(CL_ENOENT, "Invalid directory `%s'", argv[1]); |
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| 103 | break; |
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| 104 | default: |
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| 105 | cli_error(CL_EFAIL, "Unable to change to `%s'", argv[1]); |
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| 106 | break; |
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| 107 | } |
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| 108 | } |
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| 109 | |||
| 110 | return CMD_FAILURE; |
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| 111 | } |