1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Mini mktemp implementation for busybox
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4 | *
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5 | *
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6 | * Copyright (C) 2000 by Daniel Jacobowitz
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7 | * Written by Daniel Jacobowitz <dan@debian.org>
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8 | *
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9 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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10 | */
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11 |
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12 | /* Coreutils 6.12 man page says:
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13 | * mktemp [OPTION]... [TEMPLATE]
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14 | * Create a temporary file or directory, safely, and print its name. If
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15 | * TEMPLATE is not specified, use tmp.XXXXXXXXXX.
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16 | * -d, --directory
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17 | * create a directory, not a file
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18 | * -q, --quiet
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19 | * suppress diagnostics about file/dir-creation failure
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20 | * -u, --dry-run
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21 | * do not create anything; merely print a name (unsafe)
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22 | * --tmpdir[=DIR]
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23 | * interpret TEMPLATE relative to DIR. If DIR is not specified,
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24 | * use $TMPDIR if set, else /tmp. With this option, TEMPLATE must
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25 | * not be an absolute name. Unlike with -t, TEMPLATE may contain
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26 | * slashes, but even here, mktemp still creates only the final com-
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27 | * ponent.
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28 | * -p DIR use DIR as a prefix; implies -t [deprecated]
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29 | * -t interpret TEMPLATE as a single file name component, relative to
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30 | * a directory: $TMPDIR, if set; else the directory specified via
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31 | * -p; else /tmp [deprecated]
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32 | */
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33 |
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34 | //usage:#define mktemp_trivial_usage
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35 | //usage: "[-dt] [-p DIR] [TEMPLATE]"
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36 | //usage:#define mktemp_full_usage "\n\n"
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37 | //usage: "Create a temporary file with name based on TEMPLATE and print its name.\n"
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38 | //usage: "TEMPLATE must end with XXXXXX (e.g. [/dir/]nameXXXXXX).\n"
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39 | //usage: "Without TEMPLATE, -t tmp.XXXXXX is assumed.\n"
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40 | //usage: "\n -d Make directory, not file"
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41 | //usage: "\n -q Fail silently on errors"
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42 | //usage: "\n -t Prepend base directory name to TEMPLATE"
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43 | //usage: "\n -p DIR Use DIR as a base directory (implies -t)"
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44 | //usage: "\n -u Do not create anything; print a name"
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45 | //usage: "\n"
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46 | //usage: "\nBase directory is: -p DIR, else $TMPDIR, else /tmp"
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47 | //usage:
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48 | //usage:#define mktemp_example_usage
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49 | //usage: "$ mktemp /tmp/temp.XXXXXX\n"
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50 | //usage: "/tmp/temp.mWiLjM\n"
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51 | //usage: "$ ls -la /tmp/temp.mWiLjM\n"
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52 | //usage: "-rw------- 1 andersen andersen 0 Apr 25 17:10 /tmp/temp.mWiLjM\n"
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53 |
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54 | #include "libbb.h"
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55 |
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56 | int mktemp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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57 | int mktemp_main(int argc UNUSED_PARAM, char **argv)
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58 | {
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59 | const char *path;
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60 | char *chp;
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61 | unsigned opts;
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62 | enum {
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63 | OPT_d = 1 << 0,
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64 | OPT_q = 1 << 1,
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65 | OPT_t = 1 << 2,
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66 | OPT_p = 1 << 3,
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67 | OPT_u = 1 << 4,
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68 | };
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69 |
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70 | path = getenv("TMPDIR");
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71 | if (!path || path[0] == '\0')
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72 | path = "/tmp";
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73 |
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74 | opt_complementary = "?1"; /* 1 argument max */
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75 | opts = getopt32(argv, "dqtp:u", &path);
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76 |
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77 | chp = argv[optind];
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78 | if (!chp) {
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79 | /* GNU coreutils 8.4:
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80 | * bare "mktemp" -> "mktemp -t tmp.XXXXXX"
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81 | */
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82 | chp = xstrdup("tmp.XXXXXX");
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83 | opts |= OPT_t;
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84 | }
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85 | #if 0
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86 | /* Don't allow directory separator in template */
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87 | if ((opts & OPT_t) && bb_basename(chp) != chp) {
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88 | errno = EINVAL;
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89 | goto error;
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90 | }
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91 | #endif
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92 | if (opts & (OPT_t|OPT_p))
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93 | chp = concat_path_file(path, chp);
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94 |
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95 | if (opts & OPT_u) {
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96 | chp = mktemp(chp);
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97 | if (chp[0] == '\0')
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98 | goto error;
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99 | } else if (opts & OPT_d) {
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100 | if (mkdtemp(chp) == NULL)
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101 | goto error;
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102 | } else {
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103 | if (mkstemp(chp) < 0)
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104 | goto error;
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105 | }
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106 | puts(chp);
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107 | return EXIT_SUCCESS;
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108 | error:
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109 | if (opts & OPT_q)
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110 | return EXIT_FAILURE;
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111 | /* don't use chp as it gets mangled in case of error */
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112 | bb_perror_nomsg_and_die();
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113 | }
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