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Ensure that crypt_msg always leaves space for the trailing CTCP delimiter.

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git-svn-id: svn://svn.code.sf.net/p/bitchx/code/trunk@393 13b04d17-f746-0410-82c6-800466cd88b0
This commit is contained in:
Kevin Easton
2013-10-14 14:10:26 +00:00
parent 86d47f06ce
commit 69109d9045
1 changed files with 6 additions and 6 deletions
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12
source/encrypt.c
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@@ -214,21 +214,21 @@ static char *do_crypt(char *str, char *key, int flag)
*/
char *crypt_msg(char *str, char *key)
{
char thing[6] = { CTCP_DELIM_CHAR, 0 };
static const char sed_prefix[] = { CTCP_DELIM_CHAR, 'S', 'E', 'D', ' ', 0 };
char buffer[CRYPT_BUFFER_SIZE];
char *ptr;
strlcat(thing, "SED ", sizeof thing);
*buffer = 0;
if ((ptr = do_crypt(str, key, 1)))
{
strlcat(buffer, thing, sizeof buffer);
strlcat(buffer, ptr, sizeof buffer);
/* The - 1 terms here are to ensure that the trailing CTCP_DELIM_CHAR
* always gets added. */
strlcpy(buffer, sed_prefix, sizeof buffer - 1);
strlcat(buffer, ptr, sizeof buffer - 1);
strlcat(buffer, CTCP_DELIM_STR, sizeof buffer);
new_free(&ptr);
}
else
strlcat(buffer, str, sizeof buffer);
strlcpy(buffer, str, sizeof buffer);
return (m_strdup(buffer));
}