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@ -156,6 +156,51 @@ INIT_FUNC(mod_accesslog_init) {
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return p;
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}
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static void accesslog_append_escaped(buffer *dest, buffer *str) {
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/* replaces non-printable chars with \xHH where HH is the hex representation of the byte */
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/* exceptions: " => \", \ => \\, whitespace chars => \n \t etc. */
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buffer_prepare_append(dest, str->used - 1);
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for (unsigned int i = 0; i < str->used - 1; i++) {
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if (str->ptr[i] >= ' ' && str->ptr[i] <= '~') {
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/* printable chars */
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buffer_append_string_len(dest, &str->ptr[i], 1);
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} else switch (str->ptr[i]) {
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case '"':
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BUFFER_APPEND_STRING_CONST(dest, "\\\"");
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break;
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case '\\':
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BUFFER_APPEND_STRING_CONST(dest, "\\\\");
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break;
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case '\b':
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BUFFER_APPEND_STRING_CONST(dest, "\\b");
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break;
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case '\n':
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BUFFER_APPEND_STRING_CONST(dest, "\\n");
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break;
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case '\r':
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BUFFER_APPEND_STRING_CONST(dest, "\\r");
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break;
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case '\t':
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BUFFER_APPEND_STRING_CONST(dest, "\\t");
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break;
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case '\v':
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BUFFER_APPEND_STRING_CONST(dest, "\\v");
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break;
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default: {
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/* non printable char => \xHH */
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char hh[5] = {'\\','x',0,0,0};
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char h = str->ptr[i] / 16;
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hh[2] = (h > 9) ? (h - 10 + 'A') : (h + '0');
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h = str->ptr[i] % 16;
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hh[3] = (h > 9) ? (h - 10 + 'A') : (h + '0');
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buffer_append_string_len(dest, &hh[0], 4);
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}
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break;
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}
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}
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}
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static int accesslog_parse_format(server *srv, format_fields *fields, buffer *format) {
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size_t i, j, k = 0, start = 0;
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@ -713,7 +758,7 @@ REQUESTDONE_FUNC(log_access_write) {
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break;
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case FORMAT_REQUEST_LINE:
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if (con->request.request_line->used) {
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buffer_append_string_buffer(b, con->request.request_line);
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accesslog_append_escaped(b, con->request.request_line);
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}
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break;
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case FORMAT_STATUS:
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@ -730,14 +775,14 @@ REQUESTDONE_FUNC(log_access_write) {
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break;
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case FORMAT_HEADER:
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if (NULL != (ds = (data_string *)array_get_element(con->request.headers, p->conf.parsed_format->ptr[j]->string->ptr))) {
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buffer_append_string_buffer(b, ds->value);
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accesslog_append_escaped(b, ds->value);
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} else {
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buffer_append_string_len(b, CONST_STR_LEN("-"));
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}
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break;
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case FORMAT_RESPONSE_HEADER:
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if (NULL != (ds = (data_string *)array_get_element(con->response.headers, p->conf.parsed_format->ptr[j]->string->ptr))) {
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buffer_append_string_buffer(b, ds->value);
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accesslog_append_escaped(b, ds->value);
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} else {
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buffer_append_string_len(b, CONST_STR_LEN("-"));
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}
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@ -775,7 +820,7 @@ REQUESTDONE_FUNC(log_access_write) {
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break;
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case FORMAT_HTTP_HOST:
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if (con->uri.authority->used > 1) {
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buffer_append_string_buffer(b, con->uri.authority);
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accesslog_append_escaped(b, con->uri.authority);
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} else {
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buffer_append_string_len(b, CONST_STR_LEN("-"));
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}
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@ -801,10 +846,10 @@ REQUESTDONE_FUNC(log_access_write) {
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}
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break;
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case FORMAT_QUERY_STRING:
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buffer_append_string_buffer(b, con->uri.query);
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accesslog_append_escaped(b, con->uri.query);
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break;
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case FORMAT_URL:
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buffer_append_string_buffer(b, con->uri.path_raw);
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accesslog_append_escaped(b, con->uri.path_raw);
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break;
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case FORMAT_CONNECTION_STATUS:
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switch(con->keep_alive) {
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