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Add more DDoS prevention. - bitreich-httpd - Bitreich HTTPD service |
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git clone git://bitreich.org/bitreich-httpd git://enlrupgkhuxnvlhsf6lc3fziv5h2h… |
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--- |
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commit bf9101e0e7efc8918d6122efef1339ac12b25b63 |
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parent e5dfc5fbfe93266da5edb1bb2e903734738296cf |
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Author: Christoph Lohmann <[email protected]> |
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Date: Tue, 22 Aug 2023 07:11:56 +0200 |
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Add more DDoS prevention. |
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Diffstat: |
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M bitreich-httpd.c | 7 ++++--- |
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1 file changed, 4 insertions(+), 3 deletions(-) |
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--- |
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diff --git a/bitreich-httpd.c b/bitreich-httpd.c |
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@@ -138,7 +138,7 @@ main(int argc, char *argv[]) |
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char *wwwbase, *wwwindex, *request, *ctype, *path, *le_file, |
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*le_base, clienth[NI_MAXHOST], clientp[NI_MAXSERV], *zuccbase, |
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*requested, *header, *headerval, *hosthdr; |
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- int rlen; |
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+ int rlen, i; |
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struct sockaddr_storage clt; |
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socklen_t cltlen = sizeof(clt); |
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time_t tim; |
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@@ -170,9 +170,10 @@ main(int argc, char *argv[]) |
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request[rlen-1] = '\0'; |
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/* Header parsing. */ |
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- for (;;) { |
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+ /* At max read 16 headers. Do not allow DDoS. */ |
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+ for (i = 0; i < 16; i++) { |
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header = read_line(0, &rlen, 512); |
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- if (header == NULL) |
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+ if (header == NULL || rlen == 0) |
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break; |
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if (header[rlen-1] == '\r') { |
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header[rlen-1] = '\0'; |
