Add more DDoS prevention. - bitreich-httpd - Bitreich HTTPD service
 (HTM) git clone git://bitreich.org/bitreich-httpd git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/bitreich-httpd
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       ---
 (DIR) commit bf9101e0e7efc8918d6122efef1339ac12b25b63
 (DIR) parent e5dfc5fbfe93266da5edb1bb2e903734738296cf
 (HTM) Author: Christoph Lohmann <20h@r-36.net>
       Date:   Tue, 22 Aug 2023 07:11:56 +0200
       
       Add more DDoS prevention.
       
       Diffstat:
         M bitreich-httpd.c                    |       7 ++++---
       
       1 file changed, 4 insertions(+), 3 deletions(-)
       ---
 (DIR) diff --git a/bitreich-httpd.c b/bitreich-httpd.c
       @@ -138,7 +138,7 @@ main(int argc, char *argv[])
                char *wwwbase, *wwwindex, *request, *ctype, *path, *le_file,
                        *le_base, clienth[NI_MAXHOST], clientp[NI_MAXSERV], *zuccbase,
                        *requested, *header, *headerval, *hosthdr;
       -        int rlen;
       +        int rlen, i;
                struct sockaddr_storage clt;
                socklen_t cltlen = sizeof(clt);
                time_t tim;
       @@ -170,9 +170,10 @@ main(int argc, char *argv[])
                        request[rlen-1] = '\0';
        
                /* Header parsing. */
       -        for (;;) {
       +        /* At max read 16 headers. Do not allow DDoS. */
       +        for (i = 0; i < 16; i++) {
                        header = read_line(0, &rlen, 512);
       -                if (header == NULL)
       +                if (header == NULL || rlen == 0)
                                break;
                        if (header[rlen-1] == '\r') {
                                header[rlen-1] = '\0';