1b99c0e18f
This library gets linked in by default in userland, and the common files are included in the kernel.
108 lines
2.1 KiB
C
108 lines
2.1 KiB
C
// Beware, this code is shared between the kernel and userspace.
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#ifdef _KERNEL
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#include <types.h>
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#include <lib.h>
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#include <kern/errno.h>
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#include <kern/secure.h>
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#include <kern/test161.h>
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#else
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <test161/test161.h>
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#include <test161/secure.h>
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#endif
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// Hack for allocating userspace memory without malloc.
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static char temp_buffer[4096];
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static inline void * _alloc(size_t size)
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{
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#ifdef _KERNEL
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(void)temp_buffer;
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return kmalloc(size);
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#else
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(void)size;
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return temp_buffer;
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#endif
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}
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static inline void _free(void *ptr)
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{
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#ifdef _KERNEL
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kfree(ptr);
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#else
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(void)ptr;
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#endif
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}
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/*
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* Common success function for kernel tests. If SECRET_TESTING is defined,
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* ksecprintf will compute the hmac/sha256 hash of any message using the
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* shared secret and a random salt value. The (secure) server also knows
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* the secret and can verify the message was generated by a trusted source.
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* The salt value prevents against replay attacks.
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*/
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int
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success(int status, const char * secret, const char * name) {
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if (status == TEST161_SUCCESS) {
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return secprintf(secret, "SUCCESS", name);
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} else {
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return secprintf(secret, "FAIL", name);
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}
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}
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#ifndef SECRET_TESTING
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int
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secprintf(const char * secret, const char * msg, const char * name)
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{
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(void)secret;
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#ifdef _KERNEL
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return kprintf("%s: %s\n", name, msg);
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#else
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return printf("%s: %s\n", name, msg);
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#endif
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}
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#else
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int
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secprintf(const char * secret, const char * msg, const char * name)
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{
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char *hash, *salt, *fullmsg;
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int res;
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size_t len;
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hash = salt = fullmsg = NULL;
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// test161 expects "name: msg"
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len = strlen(name) + strlen(msg) + 3; // +3 for " :" and null terminator
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fullmsg = (char *)_alloc(len);
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if (fullmsg == NULL) {
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return -ENOMEM;
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}
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snprintf(fullmsg, len, "%s: %s", name, msg);
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res = hmac_salted(fullmsg, len-1, secret, strlen(secret), &hash, &salt);
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if (res)
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return -res;
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#ifdef _KERNEL
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res = kprintf("(%s, %s, %s, %s: %s)\n", name, hash, salt, name, msg);
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#else
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res = printf("(%s, %s, %s, %s: %s)\n", name, hash, salt, name, msg);
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#endif
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_free(hash);
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_free(salt);
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_free(fullmsg);
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return res;
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}
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#endif
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