[111] | 1 | /* |
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[121] | 2 | * This program attempts to recover deleted data structures in a registry hive. |
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| 3 | * |
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[138] | 4 | * Copyright (C) 2008-2009 Timothy D. Morgan |
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[111] | 5 | * |
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| 6 | * This program is free software; you can redistribute it and/or modify |
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| 7 | * it under the terms of the GNU General Public License as published by |
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| 8 | * the Free Software Foundation; version 3 of the License. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 18 | * |
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[118] | 19 | * $Id: reglookup-recover.c 145 2009-02-15 23:36:20Z tim $ |
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[111] | 20 | */ |
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| 21 | |
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| 22 | #include <stdio.h> |
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| 23 | #include <stdlib.h> |
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| 24 | |
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| 25 | #include "../include/regfi.h" |
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| 26 | #include "../include/range_list.h" |
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| 27 | #include "../include/lru_cache.h" |
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| 28 | |
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| 29 | |
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| 30 | /* Globals, influenced by command line parameters */ |
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| 31 | bool print_verbose = false; |
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| 32 | bool print_security = false; |
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| 33 | bool print_header = true; |
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| 34 | bool print_leftover = false; |
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| 35 | bool print_parsedraw = false; |
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| 36 | char* registry_file = NULL; |
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| 37 | |
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| 38 | #include "common.c" |
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| 39 | |
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| 40 | |
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| 41 | char* getQuotedData(int fd, uint32 offset, uint32 length) |
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| 42 | { |
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| 43 | uint8* buf; |
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| 44 | char* quoted_buf; |
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| 45 | uint32 len; |
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| 46 | |
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| 47 | if((lseek(fd, offset, SEEK_SET)) == -1) |
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| 48 | return NULL; |
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| 49 | |
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| 50 | buf = (uint8*)malloc(length); |
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| 51 | if(buf == NULL) |
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| 52 | return NULL; |
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| 53 | |
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| 54 | len = length; |
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| 55 | if((regfi_read(fd, buf, &length) != 0) || length != len) |
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| 56 | { |
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| 57 | free(buf); |
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| 58 | return NULL; |
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| 59 | } |
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| 60 | |
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| 61 | quoted_buf = quote_buffer(buf, length, common_special_chars); |
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| 62 | free(buf); |
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| 63 | |
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| 64 | return quoted_buf; |
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| 65 | } |
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| 66 | |
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| 67 | |
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[135] | 68 | void printKey(REGFI_FILE* f, REGFI_NK_REC* nk, const char* prefix) |
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[111] | 69 | { |
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| 70 | char mtime[20]; |
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| 71 | time_t tmp_time[1]; |
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| 72 | struct tm* tmp_time_s = NULL; |
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| 73 | char* quoted_name = NULL; |
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| 74 | char* quoted_raw = ""; |
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| 75 | |
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| 76 | *tmp_time = nt_time_to_unix(&nk->mtime); |
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| 77 | tmp_time_s = gmtime(tmp_time); |
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| 78 | strftime(mtime, sizeof(mtime), "%Y-%m-%d %H:%M:%S", tmp_time_s); |
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| 79 | |
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| 80 | quoted_name = quote_string(nk->keyname, key_special_chars); |
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| 81 | if (quoted_name == NULL) |
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| 82 | { |
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| 83 | quoted_name = malloc(1*sizeof(char)); |
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| 84 | if(quoted_name == NULL) |
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[143] | 85 | bailOut(REGLOOKUP_EXIT_OSERR, "ERROR: Could not allocate sufficient memory.\n"); |
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[111] | 86 | quoted_name[0] = '\0'; |
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| 87 | |
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[138] | 88 | fprintf(stderr, "WARN: NULL key name in NK record at offset %.8X.\n", |
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[111] | 89 | nk->offset); |
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| 90 | } |
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| 91 | |
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| 92 | if(print_parsedraw) |
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| 93 | quoted_raw = getQuotedData(f->fd, nk->offset, nk->cell_size); |
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| 94 | |
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| 95 | printf("%.8X,%.8X,KEY,%s,%s,%s,%d,,,,,,,,%s\n", nk->offset, nk->cell_size, |
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| 96 | prefix, quoted_name, mtime, nk->num_values, quoted_raw); |
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| 97 | |
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| 98 | if(print_parsedraw) |
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| 99 | free(quoted_raw); |
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[136] | 100 | free(quoted_name); |
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[111] | 101 | } |
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| 102 | |
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| 103 | |
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[135] | 104 | void printValue(REGFI_FILE* f, const REGFI_VK_REC* vk, const char* prefix) |
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[111] | 105 | { |
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| 106 | char* quoted_value = NULL; |
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| 107 | char* quoted_name = NULL; |
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| 108 | char* quoted_raw = ""; |
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| 109 | char* conv_error = NULL; |
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| 110 | const char* str_type = NULL; |
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| 111 | uint32 size = vk->data_size; |
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| 112 | |
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| 113 | /* Microsoft's documentation indicates that "available memory" is |
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| 114 | * the limit on value sizes. Annoying. We limit it to 1M which |
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| 115 | * should rarely be exceeded, unless the file is corrupt or |
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| 116 | * malicious. For more info, see: |
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| 117 | * http://msdn2.microsoft.com/en-us/library/ms724872.aspx |
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| 118 | */ |
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[116] | 119 | /* XXX: Should probably do something different here for this tool. |
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| 120 | * Also, It would be really nice if this message somehow included the |
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| 121 | * name of the current value we're having trouble with, since |
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| 122 | * stderr/stdout don't always sync nicely. |
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| 123 | */ |
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[135] | 124 | if(size > REGFI_VK_MAX_DATA_LENGTH) |
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[111] | 125 | { |
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[138] | 126 | fprintf(stderr, "WARN: value data size %d larger than " |
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[135] | 127 | "%d, truncating...\n", size, REGFI_VK_MAX_DATA_LENGTH); |
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| 128 | size = REGFI_VK_MAX_DATA_LENGTH; |
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[111] | 129 | } |
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| 130 | |
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| 131 | quoted_name = quote_string(vk->valuename, key_special_chars); |
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| 132 | if (quoted_name == NULL) |
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| 133 | { /* Value names are NULL when we're looking at the "(default)" value. |
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| 134 | * Currently we just return a 0-length string to try an eliminate |
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| 135 | * ambiguity with a literal "(default)" value. The data type of a line |
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| 136 | * in the output allows one to differentiate between the parent key and |
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| 137 | * this value. |
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| 138 | */ |
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| 139 | quoted_name = malloc(1*sizeof(char)); |
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| 140 | if(quoted_name == NULL) |
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[143] | 141 | bailOut(REGLOOKUP_EXIT_OSERR, "ERROR: Could not allocate sufficient memory.\n"); |
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[111] | 142 | quoted_name[0] = '\0'; |
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| 143 | } |
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| 144 | |
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| 145 | quoted_value = data_to_ascii(vk->data, size, vk->type, &conv_error); |
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| 146 | if(quoted_value == NULL) |
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| 147 | { |
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| 148 | quoted_value = malloc(1*sizeof(char)); |
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| 149 | if(quoted_value == NULL) |
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[143] | 150 | bailOut(REGLOOKUP_EXIT_OSERR, "ERROR: Could not allocate sufficient memory.\n"); |
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[111] | 151 | quoted_value[0] = '\0'; |
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| 152 | |
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| 153 | if(conv_error == NULL) |
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[138] | 154 | fprintf(stderr, "WARN: Could not quote value for '%s/%s'. " |
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[111] | 155 | "Memory allocation failure likely.\n", prefix, quoted_name); |
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| 156 | else if(print_verbose) |
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[138] | 157 | fprintf(stderr, "WARN: Could not quote value for '%s/%s'. " |
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[111] | 158 | "Returned error: %s\n", prefix, quoted_name, conv_error); |
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| 159 | } |
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| 160 | /* XXX: should these always be printed? */ |
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| 161 | else if(conv_error != NULL && print_verbose) |
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[138] | 162 | fprintf(stderr, "INFO: While quoting value for '%s/%s', " |
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[111] | 163 | "warning returned: %s\n", prefix, quoted_name, conv_error); |
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| 164 | |
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| 165 | |
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| 166 | if(print_parsedraw) |
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| 167 | quoted_raw = getQuotedData(f->fd, vk->offset, vk->cell_size); |
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| 168 | |
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| 169 | str_type = regfi_type_val2str(vk->type); |
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| 170 | if(str_type == NULL) |
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| 171 | printf("%.8X,%.8X,VALUE,%s,%s,,,0x%.8X,%s,%d,,,,,%s\n", |
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| 172 | vk->offset, vk->cell_size, prefix, quoted_name, |
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| 173 | vk->type, quoted_value, vk->data_size, quoted_raw); |
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| 174 | else |
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| 175 | printf("%.8X,%.8X,VALUE,%s,%s,,,%s,%s,%d,,,,,%s\n", |
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| 176 | vk->offset, vk->cell_size, prefix, quoted_name, |
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| 177 | str_type, quoted_value, vk->data_size, quoted_raw); |
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| 178 | |
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| 179 | if(print_parsedraw) |
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| 180 | free(quoted_raw); |
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| 181 | if(quoted_value != NULL) |
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| 182 | free(quoted_value); |
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| 183 | if(quoted_name != NULL) |
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| 184 | free(quoted_name); |
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| 185 | if(conv_error != NULL) |
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| 186 | free(conv_error); |
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| 187 | } |
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| 188 | |
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| 189 | |
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[135] | 190 | void printSK(REGFI_FILE* f, REGFI_SK_REC* sk) |
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[111] | 191 | { |
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| 192 | char* quoted_raw = NULL; |
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| 193 | char* empty_str = ""; |
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| 194 | char* owner = regfi_get_owner(sk->sec_desc); |
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| 195 | char* group = regfi_get_group(sk->sec_desc); |
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| 196 | char* sacl = regfi_get_sacl(sk->sec_desc); |
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| 197 | char* dacl = regfi_get_dacl(sk->sec_desc); |
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| 198 | |
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| 199 | if(print_parsedraw) |
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| 200 | quoted_raw = getQuotedData(f->fd, sk->offset, sk->cell_size); |
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| 201 | |
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| 202 | if(owner == NULL) |
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| 203 | owner = empty_str; |
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| 204 | if(group == NULL) |
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| 205 | group = empty_str; |
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| 206 | if(sacl == NULL) |
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| 207 | sacl = empty_str; |
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| 208 | if(dacl == NULL) |
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| 209 | dacl = empty_str; |
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| 210 | |
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| 211 | printf("%.8X,%.8X,SK,,,,,,,,%s,%s,%s,%s,%s\n", sk->offset, sk->cell_size, |
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| 212 | owner, group, sacl, dacl, quoted_raw); |
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| 213 | |
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| 214 | if(owner != empty_str) |
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| 215 | free(owner); |
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| 216 | if(group != empty_str) |
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| 217 | free(group); |
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| 218 | if(sacl != empty_str) |
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| 219 | free(sacl); |
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| 220 | if(dacl != empty_str) |
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| 221 | free(dacl); |
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| 222 | |
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| 223 | if(print_parsedraw) |
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| 224 | free(quoted_raw); |
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| 225 | } |
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| 226 | |
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| 227 | |
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[135] | 228 | int printCell(REGFI_FILE* f, uint32 offset) |
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[111] | 229 | { |
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| 230 | char* quoted_buf; |
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| 231 | uint32 cell_length; |
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| 232 | bool unalloc; |
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| 233 | |
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| 234 | if(!regfi_parse_cell(f->fd, offset, NULL, 0, &cell_length, &unalloc)) |
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| 235 | return 1; |
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| 236 | |
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| 237 | quoted_buf = getQuotedData(f->fd, offset, cell_length); |
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| 238 | if(quoted_buf == NULL) |
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| 239 | return 2; |
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| 240 | |
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| 241 | printf("%.8X,%.8X,RAW,,,,,,,,,,,,%s\n", offset, cell_length, quoted_buf); |
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| 242 | |
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| 243 | free(quoted_buf); |
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| 244 | return 0; |
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| 245 | } |
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| 246 | |
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| 247 | |
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[112] | 248 | /* This function returns a properly quoted parent path or partial parent |
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| 249 | * path for a given key. Returns NULL on error, "" if no path was available. |
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| 250 | * Paths returned must be free()d. |
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| 251 | */ |
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[116] | 252 | /* XXX: This is not terribly efficient, as it may reparse many keys |
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| 253 | * repeatedly. Should try to add caching. Also, piecing the path |
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| 254 | * together is slow and redundant. |
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[112] | 255 | */ |
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[135] | 256 | char* getParentPath(REGFI_FILE* f, REGFI_NK_REC* nk) |
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[112] | 257 | { |
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[135] | 258 | void_stack* path_stack = void_stack_new(REGFI_MAX_DEPTH); |
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| 259 | REGFI_HBIN* hbin; |
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| 260 | REGFI_NK_REC* cur_ancestor; |
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[112] | 261 | char* ret_val; |
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| 262 | char* path_element; |
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| 263 | char* tmp_str; |
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| 264 | uint32 virt_offset, i, stack_size, ret_val_size, ret_val_left, element_size; |
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| 265 | uint32 max_length; |
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| 266 | |
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[118] | 267 | /* The path_stack size limit should guarantee that we don't recurse forever. */ |
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[112] | 268 | virt_offset = nk->parent_off; |
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[135] | 269 | while(virt_offset != REGFI_OFFSET_NONE) |
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[112] | 270 | { |
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| 271 | hbin = regfi_lookup_hbin(f, virt_offset); |
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| 272 | if(hbin == NULL) |
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[135] | 273 | virt_offset = REGFI_OFFSET_NONE; |
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[112] | 274 | else |
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| 275 | { |
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| 276 | max_length = hbin->block_size + hbin->file_off |
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[135] | 277 | - (virt_offset+REGFI_REGF_SIZE); |
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| 278 | cur_ancestor = regfi_parse_nk(f, virt_offset+REGFI_REGF_SIZE, |
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[112] | 279 | max_length, true); |
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[138] | 280 | printMsgs(f); |
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| 281 | |
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[112] | 282 | if(cur_ancestor == NULL) |
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[135] | 283 | virt_offset = REGFI_OFFSET_NONE; |
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[112] | 284 | else |
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| 285 | { |
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[135] | 286 | if((cur_ancestor->key_type == REGFI_NK_TYPE_ROOTKEY1) |
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| 287 | || (cur_ancestor->key_type == REGFI_NK_TYPE_ROOTKEY2)) |
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| 288 | virt_offset = REGFI_OFFSET_NONE; |
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[112] | 289 | else |
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| 290 | virt_offset = cur_ancestor->parent_off; |
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| 291 | |
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| 292 | path_element = quote_string(cur_ancestor->keyname, key_special_chars); |
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| 293 | if(path_element == NULL || !void_stack_push(path_stack, path_element)) |
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| 294 | { |
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| 295 | free(cur_ancestor->keyname); |
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| 296 | free(cur_ancestor); |
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| 297 | void_stack_free_deep(path_stack); |
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| 298 | return NULL; |
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| 299 | } |
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| 300 | |
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| 301 | regfi_key_free(cur_ancestor); |
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| 302 | } |
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| 303 | } |
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| 304 | } |
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| 305 | |
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| 306 | stack_size = void_stack_size(path_stack); |
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| 307 | ret_val_size = 16*stack_size; |
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| 308 | if(ret_val_size == 0) |
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| 309 | ret_val_size = 1; |
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| 310 | ret_val_left = ret_val_size; |
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| 311 | ret_val = malloc(ret_val_size); |
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| 312 | if(ret_val == NULL) |
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| 313 | { |
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| 314 | void_stack_free_deep(path_stack); |
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| 315 | return NULL; |
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| 316 | } |
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| 317 | ret_val[0] = '\0'; |
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| 318 | |
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| 319 | for(i=0; i<stack_size; i++) |
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| 320 | { |
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| 321 | path_element = void_stack_pop(path_stack); |
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| 322 | element_size = strlen(path_element); |
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| 323 | if(ret_val_left < element_size+2) |
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| 324 | { |
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| 325 | ret_val_size += element_size+16; |
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| 326 | ret_val_left += element_size+16; |
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| 327 | tmp_str = (char*)realloc(ret_val, ret_val_size); |
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| 328 | if(tmp_str == NULL) |
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| 329 | { |
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| 330 | free(ret_val); |
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| 331 | void_stack_free_deep(path_stack); |
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| 332 | return NULL; |
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| 333 | } |
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| 334 | ret_val = tmp_str; |
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| 335 | } |
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| 336 | |
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| 337 | ret_val_left -= snprintf(ret_val+ret_val_size-ret_val_left,ret_val_left, "/%s", path_element); |
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| 338 | free(path_element); |
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| 339 | } |
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| 340 | void_stack_free(path_stack); |
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| 341 | |
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| 342 | return ret_val; |
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| 343 | } |
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| 344 | |
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| 345 | |
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[111] | 346 | static void usage(void) |
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| 347 | { |
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| 348 | fprintf(stderr, "Usage: reglookup-recover [options] <REGISTRY_FILE>\n"); |
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| 349 | fprintf(stderr, "Version: %s\n", REGLOOKUP_VERSION); |
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| 350 | fprintf(stderr, "Options:\n"); |
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| 351 | fprintf(stderr, "\t-v\t sets verbose mode.\n"); |
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| 352 | fprintf(stderr, "\t-h\t enables header row. (default)\n"); |
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| 353 | fprintf(stderr, "\t-H\t disables header row.\n"); |
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| 354 | fprintf(stderr, "\t-l\t enables leftover(raw) cell output.\n"); |
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| 355 | fprintf(stderr, "\t-L\t disables leftover(raw) cell output. (default)\n"); |
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| 356 | fprintf(stderr, "\t-r\t enables raw cell output for parsed cells.\n"); |
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| 357 | fprintf(stderr, "\t-R\t disables raw cell output for parsed cells. (default)\n"); |
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| 358 | fprintf(stderr, "\n"); |
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| 359 | } |
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| 360 | |
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| 361 | |
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[113] | 362 | bool removeRange(range_list* rl, uint32 offset, uint32 length) |
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[111] | 363 | { |
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[113] | 364 | int32 rm_idx; |
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| 365 | const range_list_element* cur_elem; |
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[115] | 366 | |
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[113] | 367 | rm_idx = range_list_find(rl, offset); |
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| 368 | if(rm_idx < 0) |
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[116] | 369 | { |
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| 370 | fprintf(stderr, "DEBUG: removeRange: rm_idx < 0; (%d)\n", rm_idx); |
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[113] | 371 | return false; |
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[116] | 372 | } |
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[113] | 373 | |
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| 374 | cur_elem = range_list_get(rl, rm_idx); |
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[111] | 375 | if(cur_elem == NULL) |
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| 376 | { |
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[116] | 377 | fprintf(stderr, "DEBUG: removeRange: cur_elem == NULL. rm_idx=%d\n", rm_idx); |
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[111] | 378 | return false; |
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| 379 | } |
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| 380 | |
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| 381 | if(offset > cur_elem->offset) |
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| 382 | { |
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| 383 | if(!range_list_split_element(rl, rm_idx, offset)) |
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| 384 | { |
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[116] | 385 | fprintf(stderr, "DEBUG: removeRange: first split failed\n"); |
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[111] | 386 | return false; |
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| 387 | } |
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| 388 | rm_idx++; |
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[116] | 389 | cur_elem = range_list_get(rl, rm_idx); |
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| 390 | if(cur_elem == NULL) |
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| 391 | { |
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| 392 | fprintf(stderr, |
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| 393 | "DEBUG: removeRange: cur_elem == NULL after first split. rm_idx=%d\n", |
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| 394 | rm_idx); |
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| 395 | return false; |
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| 396 | } |
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[111] | 397 | } |
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| 398 | |
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| 399 | if(offset+length < cur_elem->offset+cur_elem->length) |
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| 400 | { |
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| 401 | if(!range_list_split_element(rl, rm_idx, offset+length)) |
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| 402 | { |
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[116] | 403 | fprintf(stderr, "DEBUG: removeRange: second split failed\n"); |
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[111] | 404 | return false; |
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| 405 | } |
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| 406 | } |
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| 407 | |
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| 408 | if(!range_list_remove(rl, rm_idx)) |
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| 409 | { |
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[116] | 410 | fprintf(stderr, "DEBUG: removeRange: remove failed\n"); |
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[111] | 411 | return false; |
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| 412 | } |
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| 413 | |
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| 414 | return true; |
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| 415 | } |
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| 416 | |
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| 417 | |
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[145] | 418 | int extractVKs(REGFI_FILE* f, |
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| 419 | range_list* unalloc_cells, |
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| 420 | range_list* unalloc_values) |
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| 421 | { |
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| 422 | const range_list_element* cur_elem; |
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| 423 | REGFI_VK_REC* vk; |
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| 424 | uint32 i, j; |
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| 425 | |
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| 426 | for(i=0; i < range_list_size(unalloc_cells); i++) |
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| 427 | { |
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| 428 | printMsgs(f); |
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| 429 | cur_elem = range_list_get(unalloc_cells, i); |
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| 430 | for(j=0; j <= cur_elem->length; j+=8) |
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| 431 | { |
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| 432 | vk = regfi_parse_vk(f, cur_elem->offset+j, |
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| 433 | cur_elem->length-j, false); |
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| 434 | printMsgs(f); |
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| 435 | |
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| 436 | if(vk != NULL) |
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| 437 | { |
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| 438 | if(!range_list_add(unalloc_values, vk->offset, |
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| 439 | vk->cell_size, vk)) |
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| 440 | { |
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| 441 | fprintf(stderr, "ERROR: Couldn't add value to unalloc_values.\n"); |
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| 442 | return 20; |
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| 443 | } |
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| 444 | j+=vk->cell_size-8; |
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| 445 | } |
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| 446 | } |
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| 447 | } |
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| 448 | |
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| 449 | /* Remove value ranges from the unalloc_cells before we continue. */ |
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| 450 | for(i=0; i<range_list_size(unalloc_values); i++) |
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| 451 | { |
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| 452 | cur_elem = range_list_get(unalloc_values, i); |
---|
| 453 | if(!removeRange(unalloc_cells, cur_elem->offset, cur_elem->length)) |
---|
| 454 | return 30; |
---|
| 455 | } |
---|
| 456 | |
---|
| 457 | return 0; |
---|
| 458 | } |
---|
| 459 | |
---|
| 460 | |
---|
| 461 | int extractDataCells(REGFI_FILE* f, |
---|
| 462 | range_list* unalloc_cells, |
---|
| 463 | range_list* unalloc_values) |
---|
| 464 | { |
---|
| 465 | const range_list_element* cur_elem; |
---|
| 466 | REGFI_VK_REC* vk; |
---|
| 467 | REGFI_HBIN* hbin; |
---|
| 468 | uint32 i, off, data_offset, data_maxsize; |
---|
| 469 | |
---|
| 470 | for(i=0; i<range_list_size(unalloc_values); i++) |
---|
| 471 | { |
---|
| 472 | cur_elem = range_list_get(unalloc_values, i); |
---|
| 473 | vk = (REGFI_VK_REC*)cur_elem->data; |
---|
| 474 | if(vk == NULL) |
---|
| 475 | return 40; |
---|
| 476 | |
---|
| 477 | if(vk->data_size == 0) |
---|
| 478 | vk->data = NULL; |
---|
| 479 | else |
---|
| 480 | { |
---|
| 481 | off = vk->data_off+REGFI_REGF_SIZE; |
---|
| 482 | |
---|
| 483 | if(vk->data_in_offset) |
---|
| 484 | { |
---|
| 485 | vk->data = regfi_parse_data(f, vk->type, vk->data_off, |
---|
| 486 | vk->data_size, 4, |
---|
| 487 | vk->data_in_offset, false); |
---|
| 488 | } |
---|
| 489 | else if(range_list_has_range(unalloc_cells, off, vk->data_size)) |
---|
| 490 | { |
---|
| 491 | hbin = regfi_lookup_hbin(f, vk->data_off); |
---|
| 492 | if(hbin) |
---|
| 493 | { |
---|
| 494 | data_offset = vk->data_off+REGFI_REGF_SIZE; |
---|
| 495 | data_maxsize = hbin->block_size + hbin->file_off - data_offset; |
---|
| 496 | vk->data = regfi_parse_data(f, vk->type, data_offset, |
---|
| 497 | vk->data_size, data_maxsize, |
---|
| 498 | vk->data_in_offset, false); |
---|
| 499 | if(vk->data != NULL) |
---|
| 500 | { |
---|
| 501 | /* XXX: This strict checking prevents partial recovery of data |
---|
| 502 | * cells. Also, see code for regfi_parse_data and note that |
---|
| 503 | * lengths indicated in VK records are sometimes just plain |
---|
| 504 | * wrong. Need a feedback mechanism to be more fuzzy with |
---|
| 505 | * data cell lengths and the ranges removed. |
---|
| 506 | */ |
---|
| 507 | /* A data record was recovered. Remove from unalloc_cells. */ |
---|
| 508 | if(!removeRange(unalloc_cells, off, vk->data_size)) |
---|
| 509 | return 50; |
---|
| 510 | } |
---|
| 511 | } |
---|
| 512 | else |
---|
| 513 | vk->data = NULL; |
---|
| 514 | } |
---|
| 515 | } |
---|
| 516 | } |
---|
| 517 | |
---|
| 518 | return 0; |
---|
| 519 | } |
---|
| 520 | |
---|
| 521 | |
---|
[117] | 522 | /* NOTE: unalloc_keys should be an empty range_list. */ |
---|
[135] | 523 | int extractKeys(REGFI_FILE* f, |
---|
[111] | 524 | range_list* unalloc_cells, |
---|
| 525 | range_list* unalloc_keys) |
---|
| 526 | { |
---|
| 527 | const range_list_element* cur_elem; |
---|
[135] | 528 | REGFI_NK_REC* key; |
---|
[111] | 529 | uint32 i, j; |
---|
| 530 | |
---|
| 531 | for(i=0; i < range_list_size(unalloc_cells); i++) |
---|
| 532 | { |
---|
[138] | 533 | printMsgs(f); |
---|
[111] | 534 | cur_elem = range_list_get(unalloc_cells, i); |
---|
[115] | 535 | for(j=0; cur_elem->length > REGFI_NK_MIN_LENGTH |
---|
| 536 | && j <= cur_elem->length-REGFI_NK_MIN_LENGTH; j+=8) |
---|
[111] | 537 | { |
---|
[115] | 538 | key = regfi_parse_nk(f, cur_elem->offset+j, |
---|
| 539 | cur_elem->length-j, false); |
---|
[138] | 540 | printMsgs(f); |
---|
| 541 | |
---|
[111] | 542 | if(key != NULL) |
---|
| 543 | { |
---|
| 544 | if(!range_list_add(unalloc_keys, key->offset, |
---|
| 545 | key->cell_size, key)) |
---|
| 546 | { |
---|
| 547 | fprintf(stderr, "ERROR: Couldn't add key to unalloc_keys.\n"); |
---|
| 548 | return 20; |
---|
| 549 | } |
---|
[116] | 550 | j+=key->cell_size-8; |
---|
[111] | 551 | } |
---|
| 552 | } |
---|
| 553 | } |
---|
| 554 | |
---|
[116] | 555 | for(i=0; i<range_list_size(unalloc_keys); i++) |
---|
| 556 | { |
---|
| 557 | cur_elem = range_list_get(unalloc_keys, i); |
---|
| 558 | if(!removeRange(unalloc_cells, cur_elem->offset, cur_elem->length)) |
---|
| 559 | return 30; |
---|
| 560 | } |
---|
| 561 | |
---|
[111] | 562 | return 0; |
---|
| 563 | } |
---|
| 564 | |
---|
[135] | 565 | int extractValueLists(REGFI_FILE* f, |
---|
[111] | 566 | range_list* unalloc_cells, |
---|
[145] | 567 | range_list* unalloc_keys, |
---|
| 568 | range_list* unalloc_linked_values) |
---|
[111] | 569 | { |
---|
[135] | 570 | REGFI_NK_REC* nk; |
---|
[145] | 571 | REGFI_VK_REC* vk; |
---|
[135] | 572 | REGFI_HBIN* hbin; |
---|
[111] | 573 | const range_list_element* cur_elem; |
---|
| 574 | uint32 i, j, num_keys, off, values_length, max_length; |
---|
| 575 | |
---|
| 576 | num_keys=range_list_size(unalloc_keys); |
---|
| 577 | for(i=0; i<num_keys; i++) |
---|
| 578 | { |
---|
| 579 | cur_elem = range_list_get(unalloc_keys, i); |
---|
| 580 | if(cur_elem == NULL) |
---|
| 581 | return 10; |
---|
| 582 | nk = cur_elem->data; |
---|
| 583 | |
---|
[135] | 584 | if(nk->num_values && (nk->values_off!=REGFI_OFFSET_NONE)) |
---|
[111] | 585 | { |
---|
| 586 | hbin = regfi_lookup_hbin(f, nk->values_off); |
---|
| 587 | |
---|
| 588 | if(hbin != NULL) |
---|
| 589 | { |
---|
[135] | 590 | off = nk->values_off + REGFI_REGF_SIZE; |
---|
[111] | 591 | max_length = hbin->block_size + hbin->file_off - off; |
---|
[145] | 592 | nk->values = regfi_load_valuelist(f, off, nk->num_values, |
---|
| 593 | max_length, false); |
---|
| 594 | if(nk->values != NULL && nk->values->elements != NULL) |
---|
| 595 | { |
---|
| 596 | /* Number of elements in the value list may be shorter than advertised |
---|
| 597 | * by NK record due to cell truncation. We'll consider this valid and |
---|
| 598 | * only throw out the whole value list if it bleeds into an already |
---|
| 599 | * parsed structure. |
---|
| 600 | */ |
---|
| 601 | values_length = (nk->values->num_values+1)*sizeof(uint32); |
---|
| 602 | if(values_length != (values_length & 0xFFFFFFF8)) |
---|
| 603 | values_length = (values_length & 0xFFFFFFF8) + 8; |
---|
[111] | 604 | |
---|
[115] | 605 | if(!range_list_has_range(unalloc_cells, off, values_length)) |
---|
[111] | 606 | { /* We've parsed a values-list which isn't in the unallocated list, |
---|
[145] | 607 | * so prune it. |
---|
[111] | 608 | */ |
---|
[145] | 609 | free(nk->values->elements); |
---|
[115] | 610 | free(nk->values); |
---|
| 611 | nk->values = NULL; |
---|
[111] | 612 | } |
---|
| 613 | else |
---|
| 614 | { /* Values-list was recovered. Remove from unalloc_cells and |
---|
| 615 | * inspect values. |
---|
| 616 | */ |
---|
[113] | 617 | if(!removeRange(unalloc_cells, off, values_length)) |
---|
[111] | 618 | return 20; |
---|
| 619 | |
---|
[145] | 620 | for(j=0; j < nk->values->num_values; j++) |
---|
[111] | 621 | { |
---|
[145] | 622 | /* Don't bother to restrict cell length here, since we'll |
---|
| 623 | * check our unalloc_cells range_list later. |
---|
| 624 | */ |
---|
| 625 | vk = regfi_parse_vk(f, nk->values->elements[j]+REGFI_REGF_SIZE, |
---|
| 626 | 0x7FFFFFFF, false); |
---|
| 627 | printMsgs(f); |
---|
| 628 | |
---|
| 629 | if(vk != NULL) |
---|
[111] | 630 | { |
---|
[145] | 631 | if(range_list_has_range(unalloc_cells, |
---|
| 632 | vk->offset, vk->cell_size)) |
---|
[111] | 633 | { |
---|
[145] | 634 | if(!range_list_add(unalloc_linked_values, vk->offset, |
---|
| 635 | vk->cell_size, vk)) |
---|
[111] | 636 | { |
---|
[145] | 637 | free(vk); |
---|
| 638 | return 30; |
---|
[111] | 639 | } |
---|
[145] | 640 | |
---|
| 641 | if(!removeRange(unalloc_cells, vk->offset, vk->cell_size)) |
---|
| 642 | return 40; |
---|
[111] | 643 | } |
---|
[145] | 644 | else |
---|
| 645 | free(vk); |
---|
[111] | 646 | } |
---|
| 647 | } |
---|
| 648 | } |
---|
| 649 | } |
---|
| 650 | } |
---|
| 651 | } |
---|
| 652 | } |
---|
| 653 | |
---|
| 654 | return 0; |
---|
| 655 | } |
---|
| 656 | |
---|
| 657 | |
---|
| 658 | |
---|
[118] | 659 | /* NOTE: unalloc_sks should be an empty range_list. */ |
---|
[135] | 660 | int extractSKs(REGFI_FILE* f, |
---|
[111] | 661 | range_list* unalloc_cells, |
---|
| 662 | range_list* unalloc_sks) |
---|
| 663 | { |
---|
| 664 | const range_list_element* cur_elem; |
---|
[135] | 665 | REGFI_SK_REC* sk; |
---|
[111] | 666 | uint32 i, j; |
---|
| 667 | |
---|
| 668 | for(i=0; i < range_list_size(unalloc_cells); i++) |
---|
| 669 | { |
---|
[138] | 670 | printMsgs(f); |
---|
[111] | 671 | cur_elem = range_list_get(unalloc_cells, i); |
---|
| 672 | for(j=0; j <= cur_elem->length; j+=8) |
---|
| 673 | { |
---|
| 674 | sk = regfi_parse_sk(f, cur_elem->offset+j, |
---|
| 675 | cur_elem->length-j, false); |
---|
[138] | 676 | printMsgs(f); |
---|
| 677 | |
---|
[111] | 678 | if(sk != NULL) |
---|
| 679 | { |
---|
| 680 | if(!range_list_add(unalloc_sks, sk->offset, |
---|
| 681 | sk->cell_size, sk)) |
---|
| 682 | { |
---|
| 683 | fprintf(stderr, "ERROR: Couldn't add sk to unalloc_sks.\n"); |
---|
| 684 | return 20; |
---|
| 685 | } |
---|
[118] | 686 | j+=sk->cell_size-8; |
---|
[111] | 687 | } |
---|
| 688 | } |
---|
| 689 | } |
---|
| 690 | |
---|
[118] | 691 | for(i=0; i<range_list_size(unalloc_sks); i++) |
---|
| 692 | { |
---|
| 693 | cur_elem = range_list_get(unalloc_sks, i); |
---|
| 694 | if(!removeRange(unalloc_cells, cur_elem->offset, cur_elem->length)) |
---|
| 695 | return 30; |
---|
| 696 | } |
---|
| 697 | |
---|
[111] | 698 | return 0; |
---|
| 699 | } |
---|
| 700 | |
---|
| 701 | |
---|
| 702 | int main(int argc, char** argv) |
---|
| 703 | { |
---|
[135] | 704 | REGFI_FILE* f; |
---|
[111] | 705 | const range_list_element* cur_elem; |
---|
| 706 | range_list* unalloc_cells; |
---|
| 707 | range_list* unalloc_keys; |
---|
[145] | 708 | range_list* unalloc_linked_values; |
---|
[111] | 709 | range_list* unalloc_values; |
---|
| 710 | range_list* unalloc_sks; |
---|
[112] | 711 | char** parent_paths; |
---|
| 712 | char* tmp_name; |
---|
| 713 | char* tmp_path; |
---|
[135] | 714 | REGFI_NK_REC* tmp_key; |
---|
| 715 | REGFI_VK_REC* tmp_value; |
---|
[116] | 716 | uint32 argi, arge, i, j, ret, num_unalloc_keys; |
---|
[111] | 717 | |
---|
| 718 | /* Process command line arguments */ |
---|
| 719 | if(argc < 2) |
---|
| 720 | { |
---|
| 721 | usage(); |
---|
[143] | 722 | bailOut(REGLOOKUP_EXIT_USAGE, "ERROR: Requires at least one argument.\n"); |
---|
[111] | 723 | } |
---|
| 724 | |
---|
| 725 | arge = argc-1; |
---|
| 726 | for(argi = 1; argi < arge; argi++) |
---|
| 727 | { |
---|
| 728 | if (strcmp("-v", argv[argi]) == 0) |
---|
| 729 | print_verbose = true; |
---|
| 730 | else if (strcmp("-h", argv[argi]) == 0) |
---|
| 731 | print_header = true; |
---|
| 732 | else if (strcmp("-H", argv[argi]) == 0) |
---|
| 733 | print_header = false; |
---|
| 734 | else if (strcmp("-l", argv[argi]) == 0) |
---|
| 735 | print_leftover = true; |
---|
| 736 | else if (strcmp("-L", argv[argi]) == 0) |
---|
| 737 | print_leftover = false; |
---|
| 738 | else if (strcmp("-r", argv[argi]) == 0) |
---|
| 739 | print_parsedraw = true; |
---|
| 740 | else if (strcmp("-R", argv[argi]) == 0) |
---|
| 741 | print_parsedraw = false; |
---|
| 742 | else |
---|
| 743 | { |
---|
| 744 | usage(); |
---|
| 745 | fprintf(stderr, "ERROR: Unrecognized option: %s\n", argv[argi]); |
---|
[143] | 746 | bailOut(REGLOOKUP_EXIT_USAGE, ""); |
---|
[111] | 747 | } |
---|
| 748 | } |
---|
| 749 | /*test_offset = strtol(argv[argi++], NULL, 16);*/ |
---|
| 750 | |
---|
| 751 | if((registry_file = strdup(argv[argi])) == NULL) |
---|
[143] | 752 | bailOut(REGLOOKUP_EXIT_OSERR, "ERROR: Memory allocation problem.\n"); |
---|
[111] | 753 | |
---|
| 754 | f = regfi_open(registry_file); |
---|
| 755 | if(f == NULL) |
---|
| 756 | { |
---|
| 757 | fprintf(stderr, "ERROR: Couldn't open registry file: %s\n", registry_file); |
---|
[143] | 758 | bailOut(REGLOOKUP_EXIT_NOINPUT, ""); |
---|
[111] | 759 | } |
---|
[138] | 760 | if(print_verbose) |
---|
| 761 | regfi_set_message_mask(f, REGFI_MSG_ERROR|REGFI_MSG_WARN|REGFI_MSG_INFO); |
---|
| 762 | else |
---|
| 763 | regfi_set_message_mask(f, REGFI_MSG_ERROR); |
---|
[111] | 764 | |
---|
| 765 | if(print_header) |
---|
| 766 | printf("OFFSET,REC_LENGTH,REC_TYPE,PATH,NAME," |
---|
| 767 | "NK_MTIME,NK_NVAL,VK_TYPE,VK_VALUE,VK_DATA_LEN," |
---|
| 768 | "SK_OWNER,SK_GROUP,SK_SACL,SK_DACL,RAW_CELL\n"); |
---|
| 769 | |
---|
| 770 | unalloc_cells = regfi_parse_unalloc_cells(f); |
---|
| 771 | if(unalloc_cells == NULL) |
---|
| 772 | { |
---|
| 773 | fprintf(stderr, "ERROR: Could not obtain list of unallocated cells.\n"); |
---|
| 774 | return 1; |
---|
| 775 | } |
---|
| 776 | |
---|
| 777 | unalloc_keys = range_list_new(); |
---|
| 778 | if(unalloc_keys == NULL) |
---|
| 779 | return 10; |
---|
| 780 | |
---|
[145] | 781 | unalloc_linked_values = range_list_new(); |
---|
| 782 | if(unalloc_linked_values == NULL) |
---|
| 783 | return 10; |
---|
| 784 | |
---|
[111] | 785 | unalloc_values = range_list_new(); |
---|
| 786 | if(unalloc_values == NULL) |
---|
| 787 | return 10; |
---|
| 788 | |
---|
| 789 | unalloc_sks = range_list_new(); |
---|
| 790 | if(unalloc_sks == NULL) |
---|
| 791 | return 10; |
---|
| 792 | |
---|
| 793 | ret = extractKeys(f, unalloc_cells, unalloc_keys); |
---|
| 794 | if(ret != 0) |
---|
| 795 | { |
---|
| 796 | fprintf(stderr, "ERROR: extractKeys() failed with %d.\n", ret); |
---|
| 797 | return ret; |
---|
| 798 | } |
---|
| 799 | |
---|
[145] | 800 | ret = extractValueLists(f, unalloc_cells, unalloc_keys,unalloc_linked_values); |
---|
[111] | 801 | if(ret != 0) |
---|
| 802 | { |
---|
| 803 | fprintf(stderr, "ERROR: extractValueLists() failed with %d.\n", ret); |
---|
| 804 | return ret; |
---|
| 805 | } |
---|
| 806 | |
---|
[145] | 807 | /* Carve any orphan values */ |
---|
| 808 | ret = extractVKs(f, unalloc_cells, unalloc_values); |
---|
[111] | 809 | if(ret != 0) |
---|
| 810 | { |
---|
[145] | 811 | fprintf(stderr, "ERROR: extractVKs() failed with %d.\n", ret); |
---|
[111] | 812 | return ret; |
---|
| 813 | } |
---|
| 814 | |
---|
[145] | 815 | /* Carve any data associated with VK records */ |
---|
| 816 | ret = extractDataCells(f, unalloc_cells, unalloc_linked_values); |
---|
| 817 | if(ret != 0) |
---|
| 818 | { |
---|
| 819 | fprintf(stderr, "ERROR: extractDataCells() failed with %d.\n", ret); |
---|
| 820 | return ret; |
---|
| 821 | } |
---|
| 822 | ret = extractDataCells(f, unalloc_cells, unalloc_values); |
---|
| 823 | if(ret != 0) |
---|
| 824 | { |
---|
| 825 | fprintf(stderr, "ERROR: extractDataCells() failed with %d.\n", ret); |
---|
| 826 | return ret; |
---|
| 827 | } |
---|
| 828 | |
---|
[111] | 829 | /* Carve any SK records */ |
---|
| 830 | ret = extractSKs(f, unalloc_cells, unalloc_sks); |
---|
| 831 | if(ret != 0) |
---|
| 832 | { |
---|
| 833 | fprintf(stderr, "ERROR: extractSKs() failed with %d.\n", ret); |
---|
| 834 | return ret; |
---|
| 835 | } |
---|
| 836 | |
---|
[112] | 837 | /* Now that we're done carving, associate recovered keys with parents, |
---|
| 838 | * if at all possible. |
---|
| 839 | */ |
---|
| 840 | num_unalloc_keys = range_list_size(unalloc_keys); |
---|
| 841 | parent_paths = (char**)malloc(sizeof(char*)*num_unalloc_keys); |
---|
| 842 | if(parent_paths == NULL) |
---|
| 843 | return 10; |
---|
[111] | 844 | |
---|
[112] | 845 | for(i=0; i < num_unalloc_keys; i++) |
---|
[111] | 846 | { |
---|
| 847 | cur_elem = range_list_get(unalloc_keys, i); |
---|
[135] | 848 | tmp_key = (REGFI_NK_REC*)cur_elem->data; |
---|
[111] | 849 | |
---|
[112] | 850 | if(tmp_key == NULL) |
---|
| 851 | return 20; |
---|
| 852 | |
---|
| 853 | parent_paths[i] = getParentPath(f, tmp_key); |
---|
| 854 | if(parent_paths[i] == NULL) |
---|
| 855 | return 20; |
---|
| 856 | } |
---|
| 857 | |
---|
| 858 | /* Now start the output */ |
---|
| 859 | for(i=0; i < num_unalloc_keys; i++) |
---|
| 860 | { |
---|
| 861 | cur_elem = range_list_get(unalloc_keys, i); |
---|
[135] | 862 | tmp_key = (REGFI_NK_REC*)cur_elem->data; |
---|
[112] | 863 | |
---|
| 864 | printKey(f, tmp_key, parent_paths[i]); |
---|
[114] | 865 | if(tmp_key->num_values > 0 && tmp_key->values != NULL) |
---|
[111] | 866 | { |
---|
[112] | 867 | tmp_name = quote_string(tmp_key->keyname, key_special_chars); |
---|
| 868 | tmp_path = (char*)malloc(strlen(parent_paths[i])+strlen(tmp_name)+2); |
---|
| 869 | if(tmp_path == NULL) |
---|
[136] | 870 | { |
---|
| 871 | free(tmp_name); |
---|
[112] | 872 | return 10; |
---|
[136] | 873 | } |
---|
| 874 | |
---|
[112] | 875 | sprintf(tmp_path, "%s/%s", parent_paths[i], tmp_name); |
---|
[145] | 876 | for(j=0; j < tmp_key->values->num_values; j++) |
---|
[112] | 877 | { |
---|
[145] | 878 | tmp_value = |
---|
| 879 | (REGFI_VK_REC*)range_list_find_data(unalloc_linked_values, |
---|
| 880 | tmp_key->values->elements[j] |
---|
| 881 | + REGFI_REGF_SIZE); |
---|
[112] | 882 | if(tmp_value != NULL) |
---|
| 883 | printValue(f, tmp_value, tmp_path); |
---|
| 884 | } |
---|
| 885 | free(tmp_path); |
---|
| 886 | free(tmp_name); |
---|
| 887 | free(parent_paths[i]); |
---|
[111] | 888 | } |
---|
| 889 | } |
---|
[112] | 890 | free(parent_paths); |
---|
[111] | 891 | |
---|
| 892 | /* Print out orphaned values */ |
---|
| 893 | for(i=0; i < range_list_size(unalloc_values); i++) |
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| 894 | { |
---|
| 895 | cur_elem = range_list_get(unalloc_values, i); |
---|
[135] | 896 | tmp_value = (REGFI_VK_REC*)cur_elem->data; |
---|
[111] | 897 | |
---|
| 898 | printValue(f, tmp_value, ""); |
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| 899 | } |
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| 900 | |
---|
| 901 | if(print_leftover) |
---|
| 902 | { |
---|
| 903 | for(i=0; i < range_list_size(unalloc_cells); i++) |
---|
| 904 | { |
---|
| 905 | cur_elem = range_list_get(unalloc_cells, i); |
---|
| 906 | printCell(f, cur_elem->offset); |
---|
| 907 | } |
---|
| 908 | } |
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| 909 | |
---|
| 910 | return 0; |
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| 911 | } |
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