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Fixed possible buffer overrun in "too long header line" logging.

Browse source 
Additionally, ellipsis now always added to make it clear that
the header logged is incomplete.

Reported by Daniil Bondarev.
This commit is contained in:
Maxim Dounin 2014-10-08 17:16:04 +04:00
parent 52e4dc2f74
commit c01481a4cb
1 changed files with 2 additions and 3 deletions
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5
src/http/ngx_http_request.c
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@ -1227,12 +1227,11 @@ ngx_http_process_request_headers(ngx_event_t *rev)
if (len > NGX_MAX_ERROR_STR - 300) {
len = NGX_MAX_ERROR_STR - 300;
p[len++] = '.'; p[len++] = '.'; p[len++] = '.';
}
ngx_log_error(NGX_LOG_INFO, c->log, 0,
"client sent too long header line: \"%*s\"",
len, r->header_name_start);
"client sent too long header line: \"%*s...\"",
len, r->header_name_start);
ngx_http_finalize_request(r,
NGX_HTTP_REQUEST_HEADER_TOO_LARGE);