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Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
237fead6 MH |
2 | /** |
3 | * eCryptfs: Linux filesystem encryption layer | |
4 | * Functions only useful for debugging. | |
5 | * | |
6 | * Copyright (C) 2006 International Business Machines Corp. | |
7 | * Author(s): Michael A. Halcrow <mahalcro@us.ibm.com> | |
237fead6 MH |
8 | */ |
9 | ||
10 | #include "ecryptfs_kernel.h" | |
11 | ||
12 | /** | |
13 | * ecryptfs_dump_auth_tok - debug function to print auth toks | |
14 | * | |
15 | * This function will print the contents of an ecryptfs authentication | |
16 | * token. | |
17 | */ | |
18 | void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok) | |
19 | { | |
20 | char salt[ECRYPTFS_SALT_SIZE * 2 + 1]; | |
21 | char sig[ECRYPTFS_SIG_SIZE_HEX + 1]; | |
22 | ||
23 | ecryptfs_printk(KERN_DEBUG, "Auth tok at mem loc [%p]:\n", | |
24 | auth_tok); | |
e2bd99ec | 25 | if (auth_tok->flags & ECRYPTFS_PRIVATE_KEY) { |
237fead6 | 26 | ecryptfs_printk(KERN_DEBUG, " * private key type\n"); |
237fead6 MH |
27 | } else { |
28 | ecryptfs_printk(KERN_DEBUG, " * passphrase type\n"); | |
29 | ecryptfs_to_hex(salt, auth_tok->token.password.salt, | |
30 | ECRYPTFS_SALT_SIZE); | |
31 | salt[ECRYPTFS_SALT_SIZE * 2] = '\0'; | |
32 | ecryptfs_printk(KERN_DEBUG, " * salt = [%s]\n", salt); | |
e2bd99ec MH |
33 | if (auth_tok->token.password.flags & |
34 | ECRYPTFS_PERSISTENT_PASSWORD) { | |
237fead6 MH |
35 | ecryptfs_printk(KERN_DEBUG, " * persistent\n"); |
36 | } | |
37 | memcpy(sig, auth_tok->token.password.signature, | |
38 | ECRYPTFS_SIG_SIZE_HEX); | |
39 | sig[ECRYPTFS_SIG_SIZE_HEX] = '\0'; | |
40 | ecryptfs_printk(KERN_DEBUG, " * signature = [%s]\n", sig); | |
41 | } | |
42 | ecryptfs_printk(KERN_DEBUG, " * session_key.flags = [0x%x]\n", | |
43 | auth_tok->session_key.flags); | |
44 | if (auth_tok->session_key.flags | |
45 | & ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT) | |
46 | ecryptfs_printk(KERN_DEBUG, | |
47 | " * Userspace decrypt request set\n"); | |
48 | if (auth_tok->session_key.flags | |
49 | & ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT) | |
50 | ecryptfs_printk(KERN_DEBUG, | |
51 | " * Userspace encrypt request set\n"); | |
52 | if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_DECRYPTED_KEY) { | |
53 | ecryptfs_printk(KERN_DEBUG, " * Contains decrypted key\n"); | |
54 | ecryptfs_printk(KERN_DEBUG, | |
55 | " * session_key.decrypted_key_size = [0x%x]\n", | |
56 | auth_tok->session_key.decrypted_key_size); | |
57 | ecryptfs_printk(KERN_DEBUG, " * Decrypted session key " | |
58 | "dump:\n"); | |
59 | if (ecryptfs_verbosity > 0) | |
60 | ecryptfs_dump_hex(auth_tok->session_key.decrypted_key, | |
61 | ECRYPTFS_DEFAULT_KEY_BYTES); | |
62 | } | |
63 | if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_ENCRYPTED_KEY) { | |
64 | ecryptfs_printk(KERN_DEBUG, " * Contains encrypted key\n"); | |
65 | ecryptfs_printk(KERN_DEBUG, | |
66 | " * session_key.encrypted_key_size = [0x%x]\n", | |
67 | auth_tok->session_key.encrypted_key_size); | |
68 | ecryptfs_printk(KERN_DEBUG, " * Encrypted session key " | |
69 | "dump:\n"); | |
70 | if (ecryptfs_verbosity > 0) | |
71 | ecryptfs_dump_hex(auth_tok->session_key.encrypted_key, | |
72 | auth_tok->session_key. | |
73 | encrypted_key_size); | |
74 | } | |
75 | } | |
76 | ||
77 | /** | |
78 | * ecryptfs_dump_hex - debug hex printer | |
79 | * @data: string of bytes to be printed | |
80 | * @bytes: number of bytes to print | |
81 | * | |
82 | * Dump hexadecimal representation of char array | |
83 | */ | |
84 | void ecryptfs_dump_hex(char *data, int bytes) | |
85 | { | |
237fead6 MH |
86 | if (ecryptfs_verbosity < 1) |
87 | return; | |
237fead6 | 88 | |
96827c30 SH |
89 | print_hex_dump(KERN_DEBUG, "ecryptfs: ", DUMP_PREFIX_OFFSET, 16, 1, |
90 | data, bytes, false); | |
91 | } |