comparison: dav/xattrtool.c
dav/xattrtool.c
- changeset 660
- e835ec0b7f17
- child 663
- 888aa263c0f1
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| 659:51206020cfbe | 660:e835ec0b7f17 |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2019 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 /* | |
| 30 * small tool for accessing extended attributes | |
| 31 */ | |
| 32 | |
| 33 #include <stdio.h> | |
| 34 #include <stdlib.h> | |
| 35 #include <string.h> | |
| 36 #include <errno.h> | |
| 37 | |
| 38 #include "libxattr.h" | |
| 39 | |
| 40 int attrtool_list(int argc, char **argv, int values); | |
| 41 int attrtool_get(int argc, char **argv, int raw); | |
| 42 int attrtool_set(int argc, char **argv); | |
| 43 | |
| 44 void print_usage(char *cmd) { | |
| 45 fprintf(stderr, "usage %s:\n", cmd); | |
| 46 fprintf(stderr, " list <file>\n"); | |
| 47 fprintf(stderr, " listvalues <file>\n"); | |
| 48 fprintf(stderr, " get <file> <name>\n"); | |
| 49 fprintf(stderr, " set <file> <name> <value>\n"); | |
| 50 fprintf(stderr, " getraw <file> <name>\n"); | |
| 51 } | |
| 52 | |
| 53 int main(int argc, char **argv) { | |
| 54 if(argc < 3) { | |
| 55 print_usage(argv[0]); | |
| 56 return 1; | |
| 57 } | |
| 58 | |
| 59 if(!strcmp(argv[1], "list") || !strcmp(argv[1], "ls")) { | |
| 60 return attrtool_list(argc, argv, 0); | |
| 61 } else if(!strcmp(argv[1], "listvalues") || !strcmp(argv[1], "lsv")) { | |
| 62 return attrtool_list(argc, argv, 1); | |
| 63 } else if(!strcmp(argv[1], "get")) { | |
| 64 return attrtool_get(argc, argv, 0); | |
| 65 } else if(!strcmp(argv[1], "getraw")) { | |
| 66 return attrtool_get(argc, argv, 1); | |
| 67 } else if(!strcmp(argv[1], "set")) { | |
| 68 return attrtool_set(argc, argv); | |
| 69 } else { | |
| 70 fprintf(stderr, "Unknown command\n"); | |
| 71 print_usage(argv[0]); | |
| 72 } | |
| 73 | |
| 74 return 1; | |
| 75 } | |
| 76 | |
| 77 int attrtool_list(int argc, char **argv, int values) { | |
| 78 ssize_t nelm = 0; | |
| 79 char **list = xattr_list(argv[2], &nelm); | |
| 80 if(nelm < 0) { | |
| 81 perror("xattr_list"); | |
| 82 return 3; | |
| 83 } | |
| 84 | |
| 85 for(int i=0;i<nelm;i++) { | |
| 86 char *attr = list[i]; | |
| 87 if(values) { | |
| 88 ssize_t valuelen = 0; | |
| 89 char *value = xattr_get(argv[2], attr, &valuelen); | |
| 90 if(valuelen < 0) { | |
| 91 printf("%s: #ERROR: %s\n", attr, strerror(errno)); | |
| 92 } else { | |
| 93 printf("%s: %.*s\n", attr, (int)valuelen, value); | |
| 94 } | |
| 95 | |
| 96 if(value) { | |
| 97 free(value); | |
| 98 } | |
| 99 } else { | |
| 100 printf("%s\n", attr); | |
| 101 } | |
| 102 | |
| 103 free(list[i]); | |
| 104 } | |
| 105 if(list) { | |
| 106 free(list); | |
| 107 } | |
| 108 | |
| 109 return 0; | |
| 110 } | |
| 111 | |
| 112 int attrtool_get(int argc, char **argv, int raw) { | |
| 113 if(argc < 4) { | |
| 114 fprintf(stderr, "Too few arguments\n"); | |
| 115 print_usage(argv[1]); | |
| 116 return 1; | |
| 117 } | |
| 118 | |
| 119 char *file = argv[2]; | |
| 120 char *attr = argv[3]; | |
| 121 int ret = 0; | |
| 122 | |
| 123 size_t valuelen = 0; | |
| 124 char *value = xattr_get(file, attr, &valuelen); | |
| 125 if(value) { | |
| 126 if(raw) { | |
| 127 fwrite(value, 1, valuelen, stdout); | |
| 128 } else { | |
| 129 printf("%.*s\n", (int)valuelen, value); | |
| 130 } | |
| 131 free(value); | |
| 132 } else { | |
| 133 perror("xattr_get"); | |
| 134 ret = 3; | |
| 135 } | |
| 136 | |
| 137 return ret; | |
| 138 } | |
| 139 | |
| 140 int attrtool_set(int argc, char **argv) { | |
| 141 if(argc < 4) { | |
| 142 fprintf(stderr, "Too few arguments\n"); | |
| 143 print_usage(argv[1]); | |
| 144 return 1; | |
| 145 } | |
| 146 | |
| 147 size_t len = strlen(argv[4]); | |
| 148 char *file = argv[2]; | |
| 149 char *attr = argv[3]; | |
| 150 char *value = argv[4]; | |
| 151 int ret = 0; | |
| 152 | |
| 153 if(xattr_set(file, attr, value, len)) { | |
| 154 perror("xattr_set"); | |
| 155 ret = 3; | |
| 156 } | |
| 157 | |
| 158 return ret; | |
| 159 } | |
| 160 |
