1 /*- 2 * Copyright (c) 2011 Tim Kientzle 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "archive_platform.h" 27 __FBSDID("$FreeBSD$"); 28 29 #include "archive_options_private.h" 30 31 static const char * 32 parse_option(const char **str, 33 const char **mod, const char **opt, const char **val); 34 35 int 36 _archive_set_option(struct archive *a, 37 const char *m, const char *o, const char *v, 38 int magic, const char *fn, option_handler use_option) 39 { 40 const char *mp, *op, *vp; 41 int r; 42 43 archive_check_magic(a, magic, ARCHIVE_STATE_NEW, fn); 44 45 mp = m != NULL && m[0] == '\0' ? NULL : m; 46 op = o != NULL && o[0] == '\0' ? NULL : o; 47 vp = v != NULL && v[0] == '\0' ? NULL : v; 48 49 if (op == NULL && vp == NULL) 50 return (ARCHIVE_OK); 51 if (op == NULL) { 52 archive_set_error(a, ARCHIVE_ERRNO_MISC, "Empty option"); 53 return (ARCHIVE_FAILED); 54 } 55 56 r = use_option(a, mp, op, vp); 57 if (r == ARCHIVE_WARN - 1) { 58 archive_set_error(a, ARCHIVE_ERRNO_MISC, 59 "Unknown module name: `%s'", mp); 60 return (ARCHIVE_FAILED); 61 } 62 if (r == ARCHIVE_WARN) { 63 archive_set_error(a, ARCHIVE_ERRNO_MISC, 64 "Undefined option: `%s%s%s%s%s%s'", 65 vp?"":"!", mp?mp:"", mp?":":"", op, vp?"=":"", vp?vp:""); 66 return (ARCHIVE_FAILED); 67 } 68 return (r); 69 } 70 71 int 72 _archive_set_either_option(struct archive *a, const char *m, const char *o, const char *v, 73 option_handler use_format_option, option_handler use_filter_option) 74 { 75 int r1, r2; 76 77 if (o == NULL && v == NULL) 78 return (ARCHIVE_OK); 79 if (o == NULL) 80 return (ARCHIVE_FAILED); 81 82 r1 = use_format_option(a, m, o, v); 83 if (r1 == ARCHIVE_FATAL) 84 return (ARCHIVE_FATAL); 85 86 r2 = use_filter_option(a, m, o, v); 87 if (r2 == ARCHIVE_FATAL) 88 return (ARCHIVE_FATAL); 89 90 return r1 > r2 ? r1 : r2; 91 } 92 93 int 94 _archive_set_options(struct archive *a, const char *options, 95 int magic, const char *fn, option_handler use_option) 96 { 97 int allok = 1, anyok = 0, r; 98 char *data; 99 const char *s, *mod, *opt, *val; 100 101 archive_check_magic(a, magic, ARCHIVE_STATE_NEW, fn); 102 103 if (options == NULL || options[0] == '\0') 104 return ARCHIVE_OK; 105 106 data = (char *)malloc(strlen(options) + 1); 107 strcpy(data, options); 108 s = (const char *)data; 109 110 do { 111 mod = opt = val = NULL; 112 113 parse_option(&s, &mod, &opt, &val); 114 115 r = use_option(a, mod, opt, val); 116 if (r == ARCHIVE_FATAL) { 117 free(data); 118 return (ARCHIVE_FATAL); 119 } 120 if (r == ARCHIVE_FAILED && mod != NULL) { 121 free(data); 122 return (ARCHIVE_FAILED); 123 } 124 if (r == ARCHIVE_WARN - 1) { 125 /* The module name is wrong. */ 126 archive_set_error(a, ARCHIVE_ERRNO_MISC, 127 "Unknown module name: `%s'", mod); 128 free(data); 129 return (ARCHIVE_FAILED); 130 } 131 if (r == ARCHIVE_WARN) { 132 /* The option name is wrong. No-one used this. */ 133 archive_set_error(a, ARCHIVE_ERRNO_MISC, 134 "Undefined option: `%s%s%s'", 135 mod?mod:"", mod?":":"", opt); 136 free(data); 137 return (ARCHIVE_FAILED); 138 } 139 if (r == ARCHIVE_OK) 140 anyok = 1; 141 else 142 allok = 0; 143 } while (s != NULL); 144 145 free(data); 146 return allok ? ARCHIVE_OK : anyok ? ARCHIVE_WARN : ARCHIVE_FAILED; 147 } 148 149 static const char * 150 parse_option(const char **s, const char **m, const char **o, const char **v) 151 { 152 const char *end, *mod, *opt, *val; 153 char *p; 154 155 end = NULL; 156 mod = NULL; 157 opt = *s; 158 val = "1"; 159 160 p = strchr(opt, ','); 161 162 if (p != NULL) { 163 *p = '\0'; 164 end = ((const char *)p) + 1; 165 } 166 167 if (0 == strlen(opt)) { 168 *s = end; 169 *m = NULL; 170 *o = NULL; 171 *v = NULL; 172 return end; 173 } 174 175 p = strchr(opt, ':'); 176 if (p != NULL) { 177 *p = '\0'; 178 mod = opt; 179 opt = ++p; 180 } 181 182 p = strchr(opt, '='); 183 if (p != NULL) { 184 *p = '\0'; 185 val = ++p; 186 } else if (opt[0] == '!') { 187 ++opt; 188 val = NULL; 189 } 190 191 *s = end; 192 *m = mod; 193 *o = opt; 194 *v = val; 195 196 return end; 197 } 198 199