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DEFINITIONS
This source file includes following definitions.
- cleanup_tempfile_and_exit
- getword
- get_line
- putline
- add_password
- usage
- interrupted
- terminate
- main
/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/******************************************************************************
******************************************************************************
* NOTE! This program is not safe as a setuid executable! Do not make it
* setuid!
******************************************************************************
*****************************************************************************/
/*
* htdigest.c: simple program for manipulating digest passwd file for Apache
*
* by Alexei Kosut, based on htpasswd.c, by Rob McCool
*/
#include "apr.h"
#include "apr_file_io.h"
#include "apr_md5.h"
#include "apr_lib.h" /* for apr_getpass() */
#include "apr_general.h"
#include "apr_signal.h"
#include "apr_strings.h" /* for apr_pstrdup() */
#define APR_WANT_STDIO
#define APR_WANT_STRFUNC
#include "apr_want.h"
#if APR_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if APR_HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef WIN32
#include <conio.h>
#endif
#if APR_CHARSET_EBCDIC
#define LF '\n'
#define CR '\r'
#else
#define LF 10
#define CR 13
#endif /* APR_CHARSET_EBCDIC */
#define MAX_STRING_LEN 256
apr_file_t *tfp = NULL;
apr_file_t *errfile;
apr_pool_t *cntxt;
#if APR_CHARSET_EBCDIC
apr_xlate_t *to_ascii;
#endif
static void cleanup_tempfile_and_exit(int rc)
{
if (tfp) {
apr_file_close(tfp);
}
exit(rc);
}
static void getword(char *word, char *line, char stop)
{
int x = 0, y;
for (x = 0; ((line[x]) && (line[x] != stop)); x++)
word[x] = line[x];
word[x] = '\0';
if (line[x])
++x;
y = 0;
while ((line[y++] = line[x++]));
}
static int get_line(char *s, int n, apr_file_t *f)
{
register int i = 0;
char ch;
apr_status_t rv = APR_EINVAL;
while (i < (n - 1) &&
((rv = apr_file_getc(&ch, f)) == APR_SUCCESS) && (ch != '\n')) {
s[i++] = ch;
}
if (ch == '\n')
s[i++] = ch;
s[i] = '\0';
if (rv != APR_SUCCESS)
return 1;
return 0;
}
static void putline(apr_file_t *f, char *l)
{
int x;
for (x = 0; l[x]; x++)
apr_file_putc(l[x], f);
}
static void add_password(const char *user, const char *realm, apr_file_t *f)
{
char *pw;
apr_md5_ctx_t context;
unsigned char digest[16];
char string[MAX_STRING_LEN];
char pwin[MAX_STRING_LEN];
char pwv[MAX_STRING_LEN];
unsigned int i;
apr_size_t len = sizeof(pwin);
if (apr_password_get("New password: ", pwin, &len) != APR_SUCCESS) {
apr_file_printf(errfile, "password too long");
cleanup_tempfile_and_exit(5);
}
len = sizeof(pwin);
apr_password_get("Re-type new password: ", pwv, &len);
if (strcmp(pwin, pwv) != 0) {
apr_file_printf(errfile, "They don't match, sorry.\n");
cleanup_tempfile_and_exit(1);
}
pw = pwin;
apr_file_printf(f, "%s:%s:", user, realm);
/* Do MD5 stuff */
sprintf(string, "%s:%s:%s", user, realm, pw);
apr_md5_init(&context);
#if APR_CHARSET_EBCDIC
apr_md5_set_xlate(&context, to_ascii);
#endif
apr_md5_update(&context, (unsigned char *) string, strlen(string));
apr_md5_final(digest, &context);
for (i = 0; i < 16; i++)
apr_file_printf(f, "%02x", digest[i]);
apr_file_printf(f, "\n");
}
static void usage(void)
{
apr_file_printf(errfile, "Usage: htdigest [-c] passwordfile realm username\n");
apr_file_printf(errfile, "The -c flag creates a new file.\n");
exit(1);
}
static void interrupted(void)
{
apr_file_printf(errfile, "Interrupted.\n");
cleanup_tempfile_and_exit(1);
}
static void terminate(void)
{
apr_terminate();
#ifdef NETWARE
pressanykey();
#endif
}
int main(int argc, const char * const argv[])
{
apr_file_t *f;
apr_status_t rv;
char tn[] = "htdigest.tmp.XXXXXX";
char *dirname;
char user[MAX_STRING_LEN];
char realm[MAX_STRING_LEN];
char line[MAX_STRING_LEN];
char l[MAX_STRING_LEN];
char w[MAX_STRING_LEN];
char x[MAX_STRING_LEN];
int found;
apr_app_initialize(&argc, &argv, NULL);
atexit(terminate);
apr_pool_create(&cntxt, NULL);
apr_file_open_stderr(&errfile, cntxt);
#if APR_CHARSET_EBCDIC
rv = apr_xlate_open(&to_ascii, "ISO-8859-1", APR_DEFAULT_CHARSET, cntxt);
if (rv) {
apr_file_printf(errfile, "apr_xlate_open(): %s (%d)\n",
apr_strerror(rv, line, sizeof(line)), rv);
exit(1);
}
#endif
apr_signal(SIGINT, (void (*)(int)) interrupted);
if (argc == 5) {
if (strcmp(argv[1], "-c"))
usage();
rv = apr_file_open(&f, argv[2], APR_WRITE | APR_CREATE,
APR_OS_DEFAULT, cntxt);
if (rv != APR_SUCCESS) {
char errmsg[120];
apr_file_printf(errfile, "Could not open passwd file %s for writing: %s\n",
argv[2],
apr_strerror(rv, errmsg, sizeof errmsg));
exit(1);
}
apr_file_printf(errfile, "Adding password for %s in realm %s.\n",
argv[4], argv[3]);
add_password(argv[4], argv[3], f);
apr_file_close(f);
exit(0);
}
else if (argc != 4)
usage();
if (apr_temp_dir_get((const char**)&dirname, cntxt) != APR_SUCCESS) {
apr_file_printf(errfile, "%s: could not determine temp dir\n",
argv[0]);
exit(1);
}
dirname = apr_psprintf(cntxt, "%s/%s", dirname, tn);
if (apr_file_mktemp(&tfp, dirname, 0, cntxt) != APR_SUCCESS) {
apr_file_printf(errfile, "Could not open temp file %s.\n", dirname);
exit(1);
}
if (apr_file_open(&f, argv[1], APR_READ, APR_OS_DEFAULT, cntxt) != APR_SUCCESS) {
apr_file_printf(errfile,
"Could not open passwd file %s for reading.\n", argv[1]);
apr_file_printf(errfile, "Use -c option to create new one.\n");
cleanup_tempfile_and_exit(1);
}
apr_cpystrn(user, argv[3], sizeof(user));
apr_cpystrn(realm, argv[2], sizeof(realm));
found = 0;
while (!(get_line(line, MAX_STRING_LEN, f))) {
if (found || (line[0] == '#') || (!line[0])) {
putline(tfp, line);
continue;
}
strcpy(l, line);
getword(w, l, ':');
getword(x, l, ':');
if (strcmp(user, w) || strcmp(realm, x)) {
putline(tfp, line);
continue;
}
else {
apr_file_printf(errfile, "Changing password for user %s in realm %s\n",
user, realm);
add_password(user, realm, tfp);
found = 1;
}
}
if (!found) {
apr_file_printf(errfile, "Adding user %s in realm %s\n", user, realm);
add_password(user, realm, tfp);
}
apr_file_close(f);
/* The temporary file has all the data, just copy it to the new location.
*/
if (apr_file_copy(dirname, argv[1], APR_FILE_SOURCE_PERMS, cntxt) !=
APR_SUCCESS) {
apr_file_printf(errfile, "%s: unable to update file %s\n",
argv[0], argv[1]);
}
apr_file_close(tfp);
return 0;
}