Replace most remaining uses of sprintf() into a `buffer`
variable followed by realloc() and strcat() with direct
use of stralloc.
Signed-off-by: Dan Cross <patchdev@fat-dragon.org>
Specifically, change the www_last10 HTML rendering logic
to use stralloc and strftime(). This eliminates a lot of
duplication.
It would be easier to test this with a unit test if the
logic of reading the last10 entries from a file were
separated from the HTML rendering logic. An area for
future enhancement.
Also start in on www_email.c, which is the last bastion
of significant realloc() use for page generation. An
explicit goal is to get rid of unsafe string handling
functions such as strcpy, strcat, sprintf, etc.
Signed-off-by: Dan Cross <patchdev@fat-dragon.org>
