debug.c

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#include "ecryptfs_kernel.h"

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);
    }
}

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");
}