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/*----------------------------------------------------------------------------*/
/* Xymon host finder. */
/* */
/* This is a CGI script to find hosts in the Xymon webpages without knowing */
/* their full name. When you have 1200+ hosts split on 60+ pages, it can be */
/* tiresome to do a manual search to find a host ... */
/* */
/* Copyright (C) 2003-2011 Henrik Storner <henrik@storner.dk> */
/* */
/* This program is released under the GNU General Public License (GPL), */
/* version 2. See the file "COPYING" for details. */
/* */
/* 2004/09/08 - Werner Michels [wm] */
/* Added support regular expression on the host search. */
/* Minor changes on errormsg() and error messagess. */
/* The parse_query was rewritten to meet the new needs. */
/* */
/*----------------------------------------------------------------------------*/
/*
* [wm] - Functionality change
* Now the search is done using only Extended POSIX pattern match.
* If you don't know how Regex works, look at "man 7 regex".
* If you want search for multiple hosts use "name1|name2|name3" insted
* of separating them by spaces. You can now search for host (displayname)
* with spaces.
* Emtpy search string will list all the hosts.
*
*
*
* [wm] - TODO
* - Move the new global vars to local vars and use function parameters
* - Verify the security implication of removing the urlvalidate() call
* - Move to POST instead of GET to receive the FORM data
* - Add the posibility to choose where to search (hostname, description
* host comment, host displayname, host clientname...)
*
*/
static char rcsid[] = "$Id: findhost.c 8069 2019-07-23 15:29:06Z jccleaver $";
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
/*[wm] For the POSIX regex support*/
#include <regex.h>
#include "libxymon.h"
/* Global vars */
/*
* [wm] To support regex searching
*/
char *pSearchPat = NULL; /* What're searching for (now its regex, not a hostlist) */
int re_flag = REG_EXTENDED|REG_NOSUB|REG_ICASE; /* default regcomp flags see man 3 regcomp */
/* You must remove REG_ICASE for case sensitive */
cgidata_t *cgidata = NULL;
int dojump = 0; /* If set and there is only one page, go directly to it */
void errormsg(char *msg)
{
printf("Content-type: %s\n\n", xgetenv("HTMLCONTENTTYPE"));
printf("<html><head><title>Xymon FindHost Error</title></head>\n");
printf("<body><BR><BR><BR>%s</body></html>\n", msg);
exit(1);
}
void parse_query(void)
{
cgidata_t *cwalk;
cwalk = cgidata;
while (cwalk) {
/*
* cwalk->name points to the name of the setting.
* cwalk->value points to the value (may be an empty string).
*/
if (strcasecmp(cwalk->name, "host") == 0) {
pSearchPat = (char *)strdup(cwalk->value);
}
else if (strcasecmp(cwalk->name, "case_sensitive") == 0 ) {
/* remove the ignore case flag */
re_flag ^= REG_ICASE;
}
else if (strcasecmp(cwalk->name, "jump") == 0 ) {
dojump = 1;
}
cwalk = cwalk->next;
}
}
void print_header(void)
{
/* It's ok with these hardcoded values, as they are not used for this page */
sethostenv("", "", "", colorname(COL_BLUE), NULL);
printf("Content-Type: %s\n\n", xgetenv("HTMLCONTENTTYPE"));
headfoot(stdout, "findhost", "", "header", COL_BLUE);
printf("<br><br><CENTER><TABLE CELLPADDING=5 SUMMARY=\"Hostlist\">\n");
printf("<tr><th align=left>Hostname (DisplayName)</th><th align=left>IP</th><th align=left>Location (Group Name)</th></tr>\n");
}
void print_footer(void)
{
printf("</TABLE></CENTER>\n");
headfoot(stdout, "findhost", "", "footer", COL_BLUE);
}
int main(int argc, char *argv[])
{
void *hostwalk, *clonewalk;
int argi;
char *envarea = NULL;
strbuffer_t *outbuf;
SBUF_DEFINE(oneurl);
int gotany = 0;
enum { OP_INITIAL, OP_YES, OP_NO } gotonepage = OP_INITIAL; /* Tracks if all matches are on one page */
char *onepage = NULL; /* If gotonepage==OP_YES, then this is the page */
/*[wm] regex support */
#define BUFSIZE 256
regex_t re;
char re_errstr[BUFSIZE];
int re_status;
for (argi=1; (argi < argc); argi++) {
if (argnmatch(argv[argi], "--env=")) {
char *p = strchr(argv[argi], '=');
loadenv(p+1, envarea);
}
else if (argnmatch(argv[argi], "--area=")) {
char *p = strchr(argv[argi], '=');
envarea = strdup(p+1);
}
}
redirect_cgilog("findhost");
cgidata = cgi_request();
if (cgidata == NULL) {
/* Present the query form */
sethostenv("", "", "", colorname(COL_BLUE), NULL);
printf("Content-type: %s\n\n", xgetenv("HTMLCONTENTTYPE"));
showform(stdout, "findhost", "findhost_form", COL_BLUE, getcurrenttime(NULL), NULL, NULL);
return 0;
}
parse_query();
if ( (re_status = regcomp(&re, pSearchPat, re_flag)) != 0 ) {
regerror(re_status, &re, re_errstr, BUFSIZE);
print_header();
printf("<tr><td align=left><font color=red>%s</font></td>\n", htmlquoted(pSearchPat));
printf("<td align=left><font color=red>%s</font></td></tr>\n", re_errstr);
print_footer();
return 0;
}
outbuf = newstrbuffer(0);
load_hostnames(xgetenv("HOSTSCFG"), NULL, get_fqdn());
hostwalk = first_host();
while (hostwalk) {
/*
* [wm] - Allow the search to be done on the hostname
* also on the "displayname" and the host comment
* Maybe this should be implemented by changing the HTML form, but until than..
* we're supposing that hostname will NEVER be null
*/
char *hostname, *displayname, *comment, *ip;
hostname = xmh_item(hostwalk, XMH_HOSTNAME);
displayname = xmh_item(hostwalk, XMH_DISPLAYNAME);
comment = xmh_item(hostwalk, XMH_COMMENT);
ip = xmh_item(hostwalk, XMH_IP);
if ( regexec (&re, hostname, (size_t)0, NULL, 0) == 0 ||
(regexec(&re, ip, (size_t)0, NULL, 0) == 0) ||
(displayname && regexec (&re, displayname, (size_t)0, NULL, 0) == 0) ||
(comment && regexec (&re, comment, (size_t)0, NULL, 0) == 0) ) {
/* match */
addtobuffer_many(outbuf,
"<tr>\n",
"<td align=left> ", (displayname ? displayname : hostname), " </td>\n",
"<td align=left> ", ip, " </td>\n",
NULL);
SBUF_MALLOC(oneurl, 4 + strlen(xgetenv("XYMONWEB")) + strlen(xmh_item(hostwalk, XMH_PAGEPATH)) + strlen(hostname));
snprintf(oneurl, oneurl_buflen, "%s/%s/#%s",
xgetenv("XYMONWEB"), xmh_item(hostwalk, XMH_PAGEPATH), hostname);
addtobuffer_many(outbuf,
"<td align=left> <a href=\"",
oneurl,
"\">",
xmh_item(hostwalk, XMH_PAGEPATHTITLE),
"</a>\n",
NULL);
gotany++;
/* See if all of the matches so far are on one page */
switch (gotonepage) {
case OP_INITIAL:
gotonepage = OP_YES;
onepage = xmh_item(hostwalk, XMH_PAGEPATH);
break;
case OP_YES:
if (strcmp(onepage, xmh_item(hostwalk, XMH_PAGEPATH)) != 0) gotonepage = OP_NO;
break;
case OP_NO:
break;
}
clonewalk = next_host(hostwalk, 1);
while (clonewalk && (strcmp(xmh_item(hostwalk, XMH_HOSTNAME), xmh_item(clonewalk, XMH_HOSTNAME)) == 0)) {
addtobuffer_many(outbuf,
"<br><a href=\"",
xgetenv("XYMONWEB"),
"/",
xmh_item(clonewalk, XMH_PAGEPATH),
"/#",
xmh_item(clonewalk, XMH_HOSTNAME),
"\">",
xmh_item(clonewalk, XMH_PAGEPATHTITLE),
"</a>\n",
NULL);
clonewalk = next_host(clonewalk, 1);
gotany++;
}
addtobuffer(outbuf, "</td>\n</tr>\n");
hostwalk = clonewalk;
}
else {
hostwalk = next_host(hostwalk, 0);
}
}
regfree (&re); /*[wm] - free regex compiled patern */
if (dojump) {
if (gotany == 1) {
printf("Location: %s\n\n", oneurl);
return 0;
}
else if ((gotany > 1) && (gotonepage == OP_YES)) {
printf("Location: %s/%s/\n\n",
xgetenv("XYMONWEB"), onepage);
return 0;
}
}
print_header();
if (!gotany) {
printf("<tr><td align=left>%s</td><td align=left>Not found</td></tr>\n", htmlquoted(pSearchPat));
}
else {
printf("%s", grabstrbuffer(outbuf));
}
print_footer();
/* [wm] - Free the strdup allocated memory */
if (pSearchPat) xfree(pSearchPat);
return 0;
}
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