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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | /** * eCryptfs: Linux filesystem encryption layer * Functions only useful for debugging. * * Copyright (C) 2006 International Business Machines Corp. * Author(s): Michael A. Halcrow <mahalcro@us.ibm.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA * 02111-1307, USA. */ #include "ecryptfs_kernel.h" /** * ecryptfs_dump_auth_tok - debug function to print auth toks * * This function will print the contents of an ecryptfs authentication * token. */ void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok) { char salt[ECRYPTFS_SALT_SIZE * 2 + 1]; char sig[ECRYPTFS_SIG_SIZE_HEX + 1]; ecryptfs_printk(KERN_DEBUG, "Auth tok at mem loc [%p]:\n", auth_tok); if (auth_tok->flags & ECRYPTFS_PRIVATE_KEY) { ecryptfs_printk(KERN_DEBUG, " * private key type\n"); } else { ecryptfs_printk(KERN_DEBUG, " * passphrase type\n"); ecryptfs_to_hex(salt, auth_tok->token.password.salt, ECRYPTFS_SALT_SIZE); salt[ECRYPTFS_SALT_SIZE * 2] = '\0'; ecryptfs_printk(KERN_DEBUG, " * salt = [%s]\n", salt); if (auth_tok->token.password.flags & ECRYPTFS_PERSISTENT_PASSWORD) { ecryptfs_printk(KERN_DEBUG, " * persistent\n"); } memcpy(sig, auth_tok->token.password.signature, ECRYPTFS_SIG_SIZE_HEX); sig[ECRYPTFS_SIG_SIZE_HEX] = '\0'; ecryptfs_printk(KERN_DEBUG, " * signature = [%s]\n", sig); } ecryptfs_printk(KERN_DEBUG, " * session_key.flags = [0x%x]\n", auth_tok->session_key.flags); if (auth_tok->session_key.flags & ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT) ecryptfs_printk(KERN_DEBUG, " * Userspace decrypt request set\n"); if (auth_tok->session_key.flags & ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT) ecryptfs_printk(KERN_DEBUG, " * Userspace encrypt request set\n"); if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_DECRYPTED_KEY) { ecryptfs_printk(KERN_DEBUG, " * Contains decrypted key\n"); ecryptfs_printk(KERN_DEBUG, " * session_key.decrypted_key_size = [0x%x]\n", auth_tok->session_key.decrypted_key_size); ecryptfs_printk(KERN_DEBUG, " * Decrypted session key " "dump:\n"); if (ecryptfs_verbosity > 0) ecryptfs_dump_hex(auth_tok->session_key.decrypted_key, ECRYPTFS_DEFAULT_KEY_BYTES); } if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_ENCRYPTED_KEY) { ecryptfs_printk(KERN_DEBUG, " * Contains encrypted key\n"); ecryptfs_printk(KERN_DEBUG, " * session_key.encrypted_key_size = [0x%x]\n", auth_tok->session_key.encrypted_key_size); ecryptfs_printk(KERN_DEBUG, " * Encrypted session key " "dump:\n"); if (ecryptfs_verbosity > 0) ecryptfs_dump_hex(auth_tok->session_key.encrypted_key, auth_tok->session_key. encrypted_key_size); } } /** * ecryptfs_dump_hex - debug hex printer * @data: string of bytes to be printed * @bytes: number of bytes to print * * Dump hexadecimal representation of char array */ void ecryptfs_dump_hex(char *data, int bytes) { int i = 0; int add_newline = 1; if (ecryptfs_verbosity < 1) return; if (bytes != 0) { printk(KERN_DEBUG "0x%.2x.", (unsigned char)data[i]); i++; } while (i < bytes) { printk("0x%.2x.", (unsigned char)data[i]); i++; if (i % 16 == 0) { printk("\n"); add_newline = 0; } else add_newline = 1; } if (add_newline) printk("\n"); } |