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/*----------------------------------------------------------------------------*/
/* Xymon webpage generator tool. */
/* */
/* Copyright (C) 2004-2011 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: chpasswd.c 6588 2010-11-14 17:21:19Z storner $";
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <unistd.h>
#include "libxymon.h"
static void errormsg(int status, char *msg)
{
printf("Status: %d\n", status);
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);
}
static int idcompare(const void *p1, const void *p2)
{
return strcmp(* (char * const *) p1, * (char * const *) p2);
}
#define ACT_NONE 0
#define ACT_DELETE 2
#define ACT_UPDATE 3
char *adduser_name = NULL;
char *adduser_password = NULL;
char *adduser_password1 = NULL;
char *adduser_password2 = NULL;
char *deluser_name = NULL;
int parse_query(void)
{
cgidata_t *cgidata, *cwalk;
int returnval = ACT_NONE;
cgidata = cgi_request();
if (cgi_method != CGI_POST) return ACT_NONE;
if (cgidata == NULL) errormsg(400, cgi_error());
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 (strcmp(cwalk->name, "USERNAME") == 0) {
adduser_name = cwalk->value;
}
else if (strcmp(cwalk->name, "PASSWORD") == 0) {
adduser_password = cwalk->value;
}
else if (strcmp(cwalk->name, "PASSWORD1") == 0) {
adduser_password1 = cwalk->value;
}
else if (strcmp(cwalk->name, "PASSWORD2") == 0) {
adduser_password2 = cwalk->value;
}
else if (strcmp(cwalk->name, "USERLIST") == 0) {
deluser_name = cwalk->value;
}
else if (strcmp(cwalk->name, "SendDelete") == 0) {
returnval = ACT_DELETE;
}
else if (strcmp(cwalk->name, "SendUpdate") == 0) {
returnval = ACT_UPDATE;
}
cwalk = cwalk->next;
}
/* We only want to accept posts from certain pages */
if (returnval != ACT_NONE) {
char cgisource[1024]; char *p;
p = csp_header("chpasswd"); if (p) fprintf(stdout, "%s", p);
snprintf(cgisource, sizeof(cgisource), "%s/%s", xgetenv("SECURECGIBINURL"), "chpasswd");
if (!cgi_refererok(cgisource)) { fprintf(stdout, "Location: %s.sh?\n\n", cgisource); return 0; }
}
return returnval;
}
int main(int argc, char *argv[])
{
int argi, event;
char *envarea = NULL;
char *hffile = "chpasswd";
SBUF_DEFINE(passfile);
FILE *fd;
char *infomsg = NULL;
char *loggedinuser = NULL;
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[argi], "--debug") == 0) {
debug = 1;
}
else if (argnmatch(argv[argi], "--passwdfile=")) {
char *p = strchr(argv[argi], '=');
passfile = strdup(p+1);
}
}
if (passfile == NULL) {
SBUF_MALLOC(passfile, strlen(xgetenv("XYMONHOME")) + 20);
snprintf(passfile, passfile_buflen, "%s/etc/xymonpasswd", xgetenv("XYMONHOME"));
}
loggedinuser = getenv("REMOTE_USER");
if (!loggedinuser) errormsg(401, "User authentication must be enabled and you must be logged in to use this CGI");
event = parse_query();
if (adduser_name && !issimpleword(adduser_name)) {
event = ACT_NONE;
adduser_name = strdup("");
infomsg = "<strong><big><font color='#FF0000'>Invalid USERNAME. Letters, numbers, dashes, and periods only.</font></big></strong>\n";
}
switch (event) {
case ACT_NONE: /* Show the form */
break;
case ACT_UPDATE: /* Change a user password*/
{
char *cmd;
int n, ret;
if ( (strlen(loggedinuser) == 0) || (strlen(loggedinuser) != strlen(adduser_name)) || (strcmp(loggedinuser, adduser_name) != 0) ) {
infomsg = "Username mismatch! You may only change your own password.";
break;
}
if ( (strlen(adduser_name) == 0)) {
infomsg = "User not logged in";
}
else if ( (strlen(adduser_password1) == 0) || (strlen(adduser_password2) == 0)) {
infomsg = "New password cannot be blank";
}
else if (strcmp(adduser_password1, adduser_password2) != 0) {
infomsg = "New passwords don't match";
}
else if (strlen(adduser_name) != strspn(adduser_name,"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-.,@/=^") ) {
infomsg = "Username has invalid characters!";
}
else if (strlen(adduser_password1) != strspn(adduser_password1,"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-.,@/=^") ) {
infomsg = "Password has invalid characters! Use alphanumerics and/or _ - . , @ / = ^";
}
else {
pid_t childpid;
int n, ret;
childpid = fork();
if (childpid < 0) {
/* Fork failed */
errprintf("Could not fork child\n");
exit(1);
}
else if (childpid == 0) {
/* child */
char *cmd;
char **cmdargs;
cmdargs = (char **) calloc(4 + 2, sizeof(char *));
cmdargs[0] = cmd = strdup("htpasswd");
cmdargs[1] = "-bv";
cmdargs[2] = strdup(passfile);
cmdargs[3] = strdup(adduser_name);
cmdargs[4] = strdup(adduser_password);
cmdargs[5] = '\0';
execvp(cmd, cmdargs);
exit(127);
}
/* parent waits for htpasswd to finish */
if ((waitpid(childpid, &n, 0) == -1) || (WEXITSTATUS(n) != 0)) {
infomsg = "Existing Password incorrect";
break;
}
childpid = fork();
if (childpid < 0) {
/* Fork failed */
errprintf("Could not fork child\n");
exit(1);
}
else if (childpid == 0) {
/* child */
char *cmd;
char **cmdargs;
cmdargs = (char **) calloc(4 + 2, sizeof(char *));
cmdargs[0] = cmd = strdup("htpasswd");
cmdargs[1] = "-b";
cmdargs[2] = strdup(passfile);
cmdargs[3] = strdup(adduser_name);
cmdargs[4] = strdup(adduser_password1);
cmdargs[5] = '\0';
execvp(cmd, cmdargs);
exit(127);
}
/* parent waits for htpasswd to finish */
if ((waitpid(childpid, &n, 0) == -1) || (WEXITSTATUS(n) != 0)) {
infomsg = "Update FAILED";
}
else {
infomsg = "<strong><big>Password changed</big></strong>\n";
}
}
}
break;
}
fprintf(stdout, "Content-type: %s\n\n", xgetenv("HTMLCONTENTTYPE"));
showform(stdout, hffile, "chpasswd_form", COL_BLUE, getcurrenttime(NULL), infomsg, NULL);
return 0;
}
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