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tlsauthentication.c: better fix for compiler warning

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This commit is contained in:
Evgeny Grin (Karlson2k)
2021-08-25 20:22:57 +03:00
parent 40501c2f5d
commit 0497e9c801
1 changed files with 12 additions and 9 deletions
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doc/examples/tlsauthentication.c
+12 -9
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@@ -30,13 +30,14 @@ string_to_base64 (const char *message)
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
unsigned long l;
size_t i;
size_t j;
char *tmp;
size_t length = strlen (message);
tmp = malloc (length * 2 + 1);
if (NULL == tmp)
return NULL;
tmp[0] = 0;
j = 0;
for (i = 0; i < length; i += 3)
{
l = (((unsigned long) message[i]) << 16)
@@ -44,19 +45,21 @@ string_to_base64 (const char *message)
| (((i + 2) < length) ? ((unsigned long) message[i + 2]) : 0);
strncat (tmp, &lookup[(l >> 18) & 0x3F], 1);
strncat (tmp, &lookup[(l >> 12) & 0x3F], 1);
tmp [j++] = lookup[(l >> 18) & 0x3F];
tmp [j++] = lookup[(l >> 12) & 0x3F];
if (i + 1 < length)
strncat (tmp, &lookup[(l >> 6) & 0x3F], 1);
tmp [j++] = lookup[(l >> 6) & 0x3F];
if (i + 2 < length)
strncat (tmp, &lookup[l & 0x3F], 1);
tmp [j++] = lookup[l & 0x3F];
}
if (2 == length % 3)
strncat (tmp, "=", 1);
else if (1 == length % 3)
strncat (tmp, "==", 2);
if (0 != length % 3)
tmp [j++] = '=';
if (1 == length % 3)
tmp [j++] = '=';
tmp [j] = 0;
return tmp;
}