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/*----------------------------------------------------------------------------*/
/* Xymon report generation front-end. */
/* */
/* This is a front-end CGI that lets the user select reporting parameters, */
/* and then invokes xymongen to generate the report. When the report is */
/* ready, the user's browser is sent off to view the report. */
/* */
/* 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. */
/* */
/*----------------------------------------------------------------------------*/
static char rcsid[] = "$Id: report.c 8069 2019-07-23 15:29:06Z jccleaver $";
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <dirent.h>
#include <time.h>
#include <signal.h>
#include <fcntl.h>
#include "libxymon.h"
char *reqenv[] = {
"XYMONHOME",
"XYMONREPDIR",
"XYMONREPURL",
NULL };
char *style = "";
time_t starttime = 0;
time_t endtime = 0;
char *suburl = "";
int csvoutput = 0;
char csvdelim = ',';
cgidata_t *cgidata = NULL;
char *monthnames[13] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", NULL };
void errormsg(char *msg)
{
printf("Content-type: %s\n\n", xgetenv("HTMLCONTENTTYPE"));
printf("<html><head><title>Invalid request</title></head>\n");
printf("<body>%s</body></html>\n", msg);
exit(1);
}
void parse_query(void)
{
cgidata_t *cwalk;
int startday, startmon, startyear;
int endday, endmon, endyear;
struct tm tmbuf;
startday = startmon = startyear = endday = endmon = endyear = -1;
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, "start-day") == 0) {
startday = atoi(cwalk->value);
}
else if (strcasecmp(cwalk->name, "start-mon") == 0) {
char *errptr;
startmon = strtol(cwalk->value, &errptr, 10) - 1;
if (errptr == cwalk->value) {
for (startmon=0; (monthnames[startmon] && strcmp(cwalk->value, monthnames[startmon])); startmon++) ;
if (startmon >= 12) startmon = -1;
}
}
else if (strcasecmp(cwalk->name, "start-yr") == 0) {
startyear = atoi(cwalk->value);
}
else if (strcasecmp(cwalk->name, "end-day") == 0) {
endday = atoi(cwalk->value);
}
else if (strcasecmp(cwalk->name, "end-mon") == 0) {
char *errptr;
endmon = strtol(cwalk->value, &errptr, 10) - 1;
if (errptr == cwalk->value) {
for (endmon=0; (monthnames[endmon] && strcmp(cwalk->value, monthnames[endmon])); endmon++) ;
if (endmon > 12) endmon = -1;
}
}
else if (strcasecmp(cwalk->name, "end-yr") == 0) {
endyear = atoi(cwalk->value);
}
else if (strcasecmp(cwalk->name, "style") == 0) {
char *p = cwalk->value + strspn(cwalk->value, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
*p = '\0';
style = strdup(cwalk->value);
}
else if (strcasecmp(cwalk->name, "suburl") == 0) {
suburl = strdup(cwalk->value);
}
else if (strcasecmp(cwalk->name, "DoReport") == 0) {
csvoutput = 0;
}
else if (strcasecmp(cwalk->name, "DoCSV") == 0) {
csvoutput = 1;
}
else if (strcasecmp(cwalk->name, "csvdelim") == 0) {
csvdelim = *cwalk->value;
}
cwalk = cwalk->next;
}
memset(&tmbuf, 0, sizeof(tmbuf));
tmbuf.tm_mday = startday;
tmbuf.tm_mon = startmon;
tmbuf.tm_year = startyear - 1900;
tmbuf.tm_hour = 0;
tmbuf.tm_min = 0;
tmbuf.tm_sec = 0;
tmbuf.tm_isdst = -1; /* Important! Or we mishandle DST periods */
starttime = mktime(&tmbuf);
memset(&tmbuf, 0, sizeof(tmbuf));
tmbuf.tm_mday = endday;
tmbuf.tm_mon = endmon;
tmbuf.tm_year = endyear - 1900;
tmbuf.tm_hour = 23;
tmbuf.tm_min = 59;
tmbuf.tm_sec = 59;
tmbuf.tm_isdst = -1; /* Important! Or we mishandle DST periods */
endtime = mktime(&tmbuf);
if ((starttime == -1) || (endtime == -1) || (starttime > getcurrenttime(NULL))) errormsg("Invalid parameters");
if (endtime > getcurrenttime(NULL)) endtime = getcurrenttime(NULL);
if (starttime > endtime) {
/* Swap start and end times */
time_t tmp;
tmp = endtime;
endtime = starttime;
starttime = tmp;
}
}
void cleandir(char *dirname)
{
DIR *dir;
struct dirent *d;
struct stat st;
char fn[PATH_MAX];
time_t killtime = getcurrenttime(NULL)-86400;
dir = opendir(dirname);
if (dir == NULL) return;
while ((d = readdir(dir))) {
if (d->d_name[0] != '.') {
snprintf(fn, sizeof(fn), "%s/%s", dirname, d->d_name);
if ((stat(fn, &st) == 0) && (st.st_mtime < killtime)) {
if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
dbgprintf("rm %s\n", fn);
unlink(fn);
}
else if (S_ISDIR(st.st_mode)) {
dbgprintf("Cleaning directory %s\n", fn);
cleandir(fn);
dbgprintf("rmdir %s\n", fn);
rmdir(fn);
}
else { /* Ignore file */ };
}
}
}
}
int main(int argc, char *argv[])
{
char dirid[PATH_MAX];
SBUF_DEFINE(outdir);
SBUF_DEFINE(xymonwebenv);
SBUF_DEFINE(xymongencmd);
char xymongentimeopt[100];
char csvdelimopt[100];
char *xymongen_argv[20];
pid_t childpid;
int childstat;
char htmldelim[100];
char startstr[30], endstr[30];
int cleanupoldreps = 1;
int argi, newargi;
char *envarea = NULL;
char *useragent = NULL;
int usemultipart = 0;
SBUF_MALLOC(outdir, PATH_MAX+1024);
SBUF_MALLOC(xymonwebenv, PATH_MAX+1024);
SBUF_MALLOC(xymongencmd, PATH_MAX+1024);
newargi = 0;
xymongen_argv[newargi++] = xymongencmd;
xymongen_argv[newargi++] = xymongentimeopt;
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);
}
else if (strcmp(argv[1], "--noclean") == 0) {
cleanupoldreps = 0;
}
else {
xymongen_argv[newargi++] = argv[argi];
}
}
redirect_cgilog("report");
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, "report", "report_form", COL_BLUE, getcurrenttime(NULL)-86400, NULL, NULL);
return 0;
}
useragent = getenv("HTTP_USER_AGENT");
if (useragent && strstr(useragent, "KHTML")) {
/* KHTML (Konqueror, Safari) cannot handle multipart documents. */
usemultipart = 0;
}
envcheck(reqenv);
parse_query();
/*
* We need to set these variables up AFTER we have put them into the xymongen_argv[] array.
* We cannot do it before, because we need the environment that the command-line options
* might provide.
*/
if (xgetenv("XYMONGEN")) snprintf(xymongencmd, xymongencmd_buflen, "%s", xgetenv("XYMONGEN"));
else snprintf(xymongencmd, xymongencmd_buflen, "%s/bin/xymongen", xgetenv("XYMONHOME"));
snprintf(xymongentimeopt, sizeof(xymongentimeopt)-1,"--reportopts=%u:%u:1:%s", (unsigned int)starttime, (unsigned int)endtime, style);
snprintf(dirid, sizeof(dirid), "%lu-%u", (unsigned long)getpid(), (unsigned int)getcurrenttime(NULL));
if (!csvoutput) {
snprintf(outdir, outdir_buflen, "%s/%s", xgetenv("XYMONREPDIR"), dirid);
mkdir(outdir, 0755);
xymongen_argv[newargi++] = outdir;
snprintf(xymonwebenv, xymonwebenv_buflen, "XYMONWEB=%s/%s", xgetenv("XYMONREPURL"), dirid);
putenv(xymonwebenv);
}
else {
snprintf(outdir, outdir_buflen, "--csv=%s/%s.csv", xgetenv("XYMONREPDIR"), dirid);
xymongen_argv[newargi++] = outdir;
snprintf(csvdelimopt, sizeof(csvdelimopt), "--csvdelim=%c", csvdelim);
xymongen_argv[newargi++] = csvdelimopt;
}
xymongen_argv[newargi++] = NULL;
if (usemultipart) {
/* Output the "please wait for report ... " thing */
snprintf(htmldelim, sizeof(htmldelim)-1, "xymonrep-%lu-%u", (unsigned long)getpid(), (unsigned int)getcurrenttime(NULL));
printf("Content-type: multipart/mixed;boundary=%s\n", htmldelim);
printf("\n");
printf("--%s\n", htmldelim);
printf("Content-type: %s\n\n", xgetenv("HTMLCONTENTTYPE"));
/* It's ok with these hardcoded values, as they are not used for this page */
sethostenv("", "", "", colorname(COL_BLUE), NULL);
sethostenv_report(starttime, endtime, 97.0, 99.995);
headfoot(stdout, "repnormal", "", "header", COL_BLUE);
strftime(startstr, sizeof(startstr), "%b %d %Y", localtime(&starttime));
strftime(endstr, sizeof(endstr), "%b %d %Y", localtime(&endtime));
printf("<CENTER><A NAME=begindata> </A>\n");
printf("<BR><BR><BR><BR>\n");
printf("<H3>Generating report for the period: %s", htmlquoted(startstr));
printf(" - %s ", htmlquoted(endstr));
printf("(%s)<BR>\n", htmlquoted(style));
printf("<P><P>\n");
fflush(stdout);
}
/* Go do the report */
childpid = fork();
if (childpid == 0) {
execv(xymongencmd, xymongen_argv);
}
else if (childpid > 0) {
wait(&childstat);
/* Ignore SIGHUP so we don't get killed during cleanup of XYMONREPDIR */
signal(SIGHUP, SIG_IGN);
if (WIFEXITED(childstat) && (WEXITSTATUS(childstat) != 0) ) {
char msg[4096];
if (usemultipart) printf("--%s\n\n", htmldelim);
snprintf(msg, sizeof(msg), "Could not generate report.<br>\nCheck that the %s/www/rep/ directory has permissions '-rwxrwxr-x' (775)<br>\n and that is is set to group %d", xgetenv("XYMONHOME"), (int)getgid());
errormsg(msg);
}
else {
/* Send the browser off to the report */
if (usemultipart) {
printf("Done...Report is <A HREF=\"%s/%s/%s\">here</a>.</P></BODY></HTML>\n", xgetenv("XYMONREPURL"), dirid, suburl);
fflush(stdout);
printf("--%s\n\n", htmldelim);
}
printf("Content-Type: %s\n\n", xgetenv("HTMLCONTENTTYPE"));
printf("<HTML><HEAD>\n");
if (!csvoutput) {
printf("<META HTTP-EQUIV=\"REFRESH\" CONTENT=\"0; URL=%s/%s/%s\"\n",
xgetenv("XYMONREPURL"), dirid, suburl);
printf("</HEAD><BODY>Report is available <a href=\"%s/%s/%s\">here</a></BODY></HTML>\n",
xgetenv("XYMONREPURL"), dirid, suburl);
}
else {
printf("<META HTTP-EQUIV=\"REFRESH\" CONTENT=\"0; URL=%s/%s.csv\"\n",
xgetenv("XYMONREPURL"), dirid);
printf("</HEAD><BODY>Report is available <a href=\"%s/%s.csv\">here</a></BODY></HTML>\n",
xgetenv("XYMONREPURL"), dirid);
}
if (usemultipart) printf("\n--%s\n", htmldelim);
fflush(stdout);
}
if (cleanupoldreps) cleandir(xgetenv("XYMONREPDIR"));
}
else {
if (usemultipart) printf("--%s\n\n", htmldelim);
printf("Content-Type: %s\n\n", xgetenv("HTMLCONTENTTYPE"));
errormsg("Fork failed");
}
return 0;
}
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