Adding upstream version 11.74.
Signed-off-by: Daniel Baumann <daniel@debian.org>
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92 changed files with 43156 additions and 0 deletions
301
tools/src/qsgrep.c
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301
tools/src/qsgrep.c
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/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*-
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*/
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/**
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* Filter utility for the quality of service module mod_qos.
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*
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* qsgrep.c: simple tool to search patterns within files
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*
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* See http://mod-qos.sourceforge.net/ for further details.
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*
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* Copyright (C) 2023 Pascal Buchbinder
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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static const char revision[] = "$Id: qsgrep.c 2654 2022-05-13 09:12:42Z pbuchbinder $";
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/* system */
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <time.h>
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/* apr */
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#include <apr.h>
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#include <apr_strings.h>
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#include <apr_file_io.h>
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#include <apr_time.h>
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#include <apr_getopt.h>
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#include <apr_general.h>
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#include <apr_lib.h>
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#include <apr_portable.h>
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#include <apr_support.h>
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#define PCRE2_CODE_UNIT_WIDTH 8
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#include <pcre2.h>
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#include "qs_util.h"
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#ifndef POSIX_MALLOC_THRESHOLD
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#define POSIX_MALLOC_THRESHOLD (10)
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#endif
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/* same as APR_SIZE_MAX which doesn't appear until APR 1.3 */
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#define QSUTIL_SIZE_MAX (~((apr_size_t)0))
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typedef struct {
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int rm_so;
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int rm_eo;
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} regmatch_t;
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static void usage(char *cmd, int man) {
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if(man) {
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//.TH [name of program] [section number] [center footer] [left footer] [center header]
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printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date,
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man_version, cmd);
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}
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printf("\n");
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if(man) {
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printf(".SH NAME\n");
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}
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qs_man_print(man, "%s - prints matching patterns within a file.\n", cmd);
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printf("\n");
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if(man) {
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printf(".SH SYNOPSIS\n");
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}
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qs_man_print(man, "%s%s -e <pattern> -o <sub string> [<path>]\n", man ? "" : "Usage: ", cmd);
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printf("\n");
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if(man) {
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printf(".SH DESCRIPTION\n");
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} else {
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printf("Summary\n");
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}
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qs_man_print(man, "%s is a simple tool to search patterns within files.\n", cmd);
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qs_man_print(man, "It uses regular expressions to find patterns and prints the\n");
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qs_man_print(man, "submatches within a pre-defined format string.\n");
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printf("\n");
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if(man) {
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printf(".SH OPTIONS\n");
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} else {
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printf("Options\n");
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}
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if(man) printf(".TP\n");
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qs_man_print(man, " -e <pattern>\n");
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if(man) printf("\n");
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qs_man_print(man, " Specifies the search pattern.\n");
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if(man) printf("\n.TP\n");
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qs_man_print(man, " -o <string>\n");
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if(man) printf("\n");
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qs_man_print(man, " Defines the output string where $0-$9 are substituted by the\n");
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qs_man_print(man, " submatches of the regular expression.\n");
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if(man) printf("\n.TP\n");
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qs_man_print(man, " <path>\n");
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if(man) printf("\n");
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qs_man_print(man, " Defines the input file to process. %s reads from\n", cmd);
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qs_man_print(man, " from standard input if this parameter is omitted.\n");
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printf("\n");
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printf("\n");
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if(man) {
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printf(".SH EXAMPLE\n");
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qs_man_println(man, "Shows the IP addresses of clients causing mod_qos(031) messages):\n");
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printf("\n");
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} else {
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printf("Example (shows the IP addresses of clients causing mod_qos(031) messages):\n");
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}
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qs_man_println(man, " %s -e 'mod_qos\\(031\\).*, c=([a-zA-Z0-9:.]*)' -o 'ip=$1' error_log\n", cmd);
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printf("\n");
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if(man) {
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printf(".SH SEE ALSO\n");
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printf("qsdt(1), qsexec(1), qsfilter2(1), qsgeo(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsre(1), qsrespeed(1), qsrotate(1), qssign(1), qstail(1)\n");
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printf(".SH AUTHOR\n");
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printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n");
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} else {
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printf("See http://mod-qos.sourceforge.net/ for further details.\n");
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}
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if(man) {
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exit(0);
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} else {
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exit(1);
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}
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}
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/*
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* Substitutes for $0-$9 within the matching string.
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* See ap_pregsub().
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*/
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char *qs_pregsub(apr_pool_t *pool, const char *input,
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const char *source, size_t nmatch,
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qs_regmatch_t pmatch[]) {
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const char *src = input;
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char *dest, *dst;
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char c;
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size_t no;
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int len;
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if(!source) {
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return NULL;
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}
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if(!nmatch) {
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return apr_pstrdup(pool, src);
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}
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/* First pass, find the size */
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len = 0;
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while((c = *src++) != '\0') {
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if(c == '&')
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no = 0;
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else if (c == '$' && apr_isdigit(*src))
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no = *src++ - '0';
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else
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no = 10;
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if (no > 9) { /* Ordinary character. */
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if (c == '\\' && (*src == '$' || *src == '&'))
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src++;
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len++;
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}
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else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) {
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if(QSUTIL_SIZE_MAX - len <= pmatch[no].rm_eo - pmatch[no].rm_so) {
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fprintf(stderr, "ERROR, integer overflow or out of memory condition");
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return NULL;
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}
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len += pmatch[no].rm_eo - pmatch[no].rm_so;
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}
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}
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dest = dst = apr_pcalloc(pool, len + 1);
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/* Now actually fill in the string */
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src = input;
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while ((c = *src++) != '\0') {
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if (c == '&')
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no = 0;
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else if (c == '$' && apr_isdigit(*src))
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no = *src++ - '0';
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else
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no = 10;
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if (no > 9) { /* Ordinary character. */
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if (c == '\\' && (*src == '$' || *src == '&'))
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c = *src++;
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*dst++ = c;
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}
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else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) {
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len = pmatch[no].rm_eo - pmatch[no].rm_so;
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memcpy(dst, source + pmatch[no].rm_so, len);
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dst += len;
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}
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}
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*dst = '\0';
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return dest;
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}
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int main(int argc, const char * const argv[]) {
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unsigned long nr = 0;
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char line[32768];
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FILE *file = 0;
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apr_pool_t *pool;
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char *cmd = strrchr(argv[0], '/');
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const char *out = NULL;
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const char *pattern = NULL;
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const char *filename = NULL;
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qs_regex_t *preg;
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qs_regmatch_t regm[QS_MAX_REG_MATCH];
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apr_app_initialize(&argc, &argv, NULL);
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apr_pool_create(&pool, NULL);
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if(cmd == NULL) {
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cmd = (char *)argv[0];
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} else {
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cmd++;
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}
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argc--;
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argv++;
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while(argc >= 1) {
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if(strcmp(*argv,"-e") == 0) {
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if (--argc >= 1) {
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pattern = *(++argv);
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}
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} else if(strcmp(*argv,"-o") == 0) {
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if (--argc >= 1) {
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out = *(++argv);
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}
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} else if(strcmp(*argv,"-h") == 0) {
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usage(cmd, 0);
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} else if(strcmp(*argv,"-?") == 0) {
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usage(cmd, 0);
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} else if(strcmp(*argv,"-help") == 0) {
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usage(cmd, 0);
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} else if(strcmp(*argv,"--man") == 0) {
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usage(cmd, 1);
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} else {
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filename = *argv;
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}
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argc--;
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argv++;
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}
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if(pattern == NULL || out == NULL) {
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usage(cmd, 0);
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}
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if(nice(10) == -1) {
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fprintf(stderr, "ERROR, failed to change nice value: %s\n", strerror(errno));
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}
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preg = apr_palloc(pool, sizeof(qs_regex_t));
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if(qs_regcomp(preg, pattern, PCRE2_DOTALL) != 0) {
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fprintf(stderr, "ERROR, could not compile '%s\n", pattern);
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exit(1);
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}
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apr_pool_pre_cleanup_register(pool, preg, qs_pregfree);
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if(filename) {
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file = fopen(filename, "r");
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if(!file) {
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fprintf(stderr, "ERROR, could not open file\n");
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exit(1);
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}
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} else {
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file = stdin;
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}
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while(fgets(line, sizeof(line), file) != NULL) {
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size_t len = strlen(line);
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nr++;
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if(qs_regexec_len(preg, line, len, QS_MAX_REG_MATCH, regm, 0) >= 0) {
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apr_pool_t *subpool;
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char *replaced;
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apr_pool_create(&subpool, pool);
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replaced = qs_pregsub(subpool, out, line, QS_MAX_REG_MATCH, regm);
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if(!replaced) {
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fprintf(stderr, "ERROR, failed to substitute submatches (line=%lu)\n", nr);
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} else {
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printf("%s\n", replaced);
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fflush(stdout);
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}
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apr_pool_destroy(subpool);
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}
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}
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if(filename) {
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fclose(file);
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}
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apr_pool_destroy(pool);
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return 0;
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}
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