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Diffstat (limited to 'support/htdbm.c')
| -rw-r--r-- | support/htdbm.c | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/support/htdbm.c b/support/htdbm.c new file mode 100644 index 0000000..40a3d23 --- /dev/null +++ b/support/htdbm.c @@ -0,0 +1,472 @@ +/* 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. + */ + +/* + * htdbm.c: simple program for manipulating DBM + * password databases for the Apache HTTP server + * + * Contributed by Mladen Turk <mturk mappingsoft.com> + * 12 Oct 2001 + */ + +#include "passwd_common.h" +#include "apr_file_io.h" +#include "apr_file_info.h" +#include "apr_pools.h" +#include "apr_signal.h" +#include "apr_md5.h" +#include "apr_sha1.h" +#include "apr_dbm.h" +#include "apr_getopt.h" + +#if APR_HAVE_STDLIB_H +#include <stdlib.h> +#endif +#if APR_HAVE_STRING_H +#include <string.h> +#endif +#if APR_HAVE_STRINGS_H +#include <strings.h> +#endif +#include <time.h> + +#if APR_CHARSET_EBCDIC +#include "apr_xlate.h" +#endif /*APR_CHARSET_EBCDIC*/ + +#if APR_HAVE_UNISTD_H +#include <unistd.h> +#endif +#if APR_HAVE_CRYPT_H +#include <crypt.h> +#endif + + +typedef struct htdbm_t htdbm_t; + +struct htdbm_t { + apr_dbm_t *dbm; + struct passwd_ctx ctx; +#if APR_CHARSET_EBCDIC + apr_xlate_t *to_ascii; +#endif + char *filename; + char *username; + char *comment; + char *type; + int create; + int rdonly; +}; + + +#define HTDBM_MAKE 0 +#define HTDBM_DELETE 1 +#define HTDBM_VERIFY 2 +#define HTDBM_LIST 3 +#define HTDBM_NOFILE 4 + +static void terminate(void) +{ + apr_terminate(); +#ifdef NETWARE + pressanykey(); +#endif +} + +static void htdbm_terminate(htdbm_t *htdbm) +{ + if (htdbm->dbm) + apr_dbm_close(htdbm->dbm); + htdbm->dbm = NULL; +} + +static htdbm_t *h; + +static void htdbm_interrupted(void) +{ + htdbm_terminate(h); + fprintf(stderr, "htdbm Interrupted !\n"); + exit(ERR_INTERRUPTED); +} + +static apr_status_t htdbm_init(apr_pool_t **pool, htdbm_t **hdbm) +{ + +#if APR_CHARSET_EBCDIC + apr_status_t rv; +#endif + + apr_pool_create( pool, NULL); + apr_pool_abort_set(abort_on_oom, *pool); + apr_file_open_stderr(&errfile, *pool); + apr_signal(SIGINT, (void (*)(int)) htdbm_interrupted); + + (*hdbm) = (htdbm_t *)apr_pcalloc(*pool, sizeof(htdbm_t)); + (*hdbm)->ctx.pool = *pool; + +#if APR_CHARSET_EBCDIC + rv = apr_xlate_open(&((*hdbm)->to_ascii), "ISO-8859-1", APR_DEFAULT_CHARSET, (*hdbm)->ctx.pool); + if (rv) { + fprintf(stderr, "apr_xlate_open(to ASCII)->%d\n", rv); + return APR_EGENERAL; + } + rv = apr_SHA1InitEBCDIC((*hdbm)->to_ascii); + if (rv) { + fprintf(stderr, "apr_SHA1InitEBCDIC()->%d\n", rv); + return APR_EGENERAL; + } + rv = apr_MD5InitEBCDIC((*hdbm)->to_ascii); + if (rv) { + fprintf(stderr, "apr_MD5InitEBCDIC()->%d\n", rv); + return APR_EGENERAL; + } +#endif /*APR_CHARSET_EBCDIC*/ + + /* Set MD5 as default */ + (*hdbm)->ctx.alg = ALG_APMD5; + (*hdbm)->type = "default"; + return APR_SUCCESS; +} + +static apr_status_t htdbm_open(htdbm_t *htdbm) +{ + if (htdbm->create) + return apr_dbm_open_ex(&htdbm->dbm, htdbm->type, htdbm->filename, APR_DBM_RWCREATE, + APR_OS_DEFAULT, htdbm->ctx.pool); + else + return apr_dbm_open_ex(&htdbm->dbm, htdbm->type, htdbm->filename, + htdbm->rdonly ? APR_DBM_READONLY : APR_DBM_READWRITE, + APR_OS_DEFAULT, htdbm->ctx.pool); +} + +static apr_status_t htdbm_save(htdbm_t *htdbm, int *changed) +{ + apr_datum_t key, val; + + if (!htdbm->username) + return APR_SUCCESS; + + key.dptr = htdbm->username; + key.dsize = strlen(htdbm->username); + if (apr_dbm_exists(htdbm->dbm, key)) + *changed = 1; + + val.dsize = strlen(htdbm->ctx.passwd); + if (!htdbm->comment) + val.dptr = htdbm->ctx.passwd; + else { + val.dptr = apr_pstrcat(htdbm->ctx.pool, htdbm->ctx.passwd, ":", + htdbm->comment, NULL); + val.dsize += (strlen(htdbm->comment) + 1); + } + return apr_dbm_store(htdbm->dbm, key, val); +} + +static apr_status_t htdbm_del(htdbm_t *htdbm) +{ + apr_datum_t key; + + key.dptr = htdbm->username; + key.dsize = strlen(htdbm->username); + if (!apr_dbm_exists(htdbm->dbm, key)) + return APR_ENOENT; + + return apr_dbm_delete(htdbm->dbm, key); +} + +static apr_status_t htdbm_verify(htdbm_t *htdbm) +{ + apr_datum_t key, val; + char *pwd; + char *rec, *cmnt; + + key.dptr = htdbm->username; + key.dsize = strlen(htdbm->username); + if (!apr_dbm_exists(htdbm->dbm, key)) + return APR_ENOENT; + if (apr_dbm_fetch(htdbm->dbm, key, &val) != APR_SUCCESS) + return APR_ENOENT; + rec = apr_pstrndup(htdbm->ctx.pool, val.dptr, val.dsize); + cmnt = strchr(rec, ':'); + if (cmnt) + pwd = apr_pstrndup(htdbm->ctx.pool, rec, cmnt - rec); + else + pwd = apr_pstrdup(htdbm->ctx.pool, rec); + return apr_password_validate(htdbm->ctx.passwd, pwd); +} + +static apr_status_t htdbm_list(htdbm_t *htdbm) +{ + apr_status_t rv; + apr_datum_t key, val; + char *cmnt; + int i = 0; + + rv = apr_dbm_firstkey(htdbm->dbm, &key); + if (rv != APR_SUCCESS) { + fprintf(stderr, "Empty database -- %s\n", htdbm->filename); + return APR_ENOENT; + } + fprintf(stderr, "Dumping records from database -- %s\n", htdbm->filename); + fprintf(stderr, " %-32s Comment\n", "Username"); + while (key.dptr != NULL) { + rv = apr_dbm_fetch(htdbm->dbm, key, &val); + if (rv != APR_SUCCESS) { + fprintf(stderr, "Failed getting data from %s\n", htdbm->filename); + return APR_EGENERAL; + } + /* Note: we don't store \0-terminators on our dbm data */ + fprintf(stderr, " %-32.*s", (int)key.dsize, key.dptr); + cmnt = memchr(val.dptr, ':', val.dsize); + if (cmnt) + fprintf(stderr, " %.*s", (int)(val.dptr+val.dsize - (cmnt+1)), cmnt + 1); + fprintf(stderr, "\n"); + rv = apr_dbm_nextkey(htdbm->dbm, &key); + if (rv != APR_SUCCESS) + fprintf(stderr, "Failed getting NextKey\n"); + ++i; + } + + fprintf(stderr, "Total #records : %d\n", i); + return APR_SUCCESS; +} + +static int htdbm_make(htdbm_t *htdbm) +{ + char cpw[MAX_STRING_LEN]; + int ret; + + htdbm->ctx.out = cpw; + htdbm->ctx.out_len = sizeof(cpw); + ret = mkhash(&htdbm->ctx); + if (ret != 0) { + fprintf(stderr, "Error: %s\n", htdbm->ctx.errstr); + return ret; + } + htdbm->ctx.passwd = apr_pstrdup(htdbm->ctx.pool, cpw); + return 0; +} + +static apr_status_t htdbm_valid_username(htdbm_t *htdbm) +{ + if (!htdbm->username || (strlen(htdbm->username) > 64) || (strlen(htdbm->username) < 1)) { + fprintf(stderr, "Invalid username length\n"); + return APR_EINVAL; + } + if (strchr(htdbm->username, ':')) { + fprintf(stderr, "Username contains invalid characters\n"); + return APR_EINVAL; + } + return APR_SUCCESS; +} + +static void htdbm_usage(void) +{ + fprintf(stderr, + "htdbm -- program for manipulating DBM password databases.\n\n" + "Usage: htdbm [-cimBdpstvx] [-C cost] [-TDBTYPE] database username\n" + " -b[cmBdptsv] [-C cost] [-TDBTYPE] database username password\n" + " -n[imBdpst] [-C cost] username\n" + " -nb[mBdpst] [-C cost] username password\n" + " -v[imBdps] [-C cost] [-TDBTYPE] database username\n" + " -vb[mBdps] [-C cost] [-TDBTYPE] database username password\n" + " -x [-TDBTYPE] database username\n" + " -l [-TDBTYPE] database\n" + "Options:\n" + " -c Create a new database.\n" + " -n Don't update database; display results on stdout.\n" + " -b Use the password from the command line rather than prompting for it.\n" + " -i Read password from stdin without verification (for script usage).\n" + " -m Force MD5 encryption of the password (default).\n" + " -B Force BCRYPT encryption of the password (very secure).\n" + " -C Set the computing time used for the bcrypt algorithm\n" + " (higher is more secure but slower, default: %d, valid: 4 to 31).\n" + " -d Force CRYPT encryption of the password (8 chars max, insecure).\n" + " -s Force SHA encryption of the password (insecure).\n" + " -p Do not encrypt the password (plaintext, insecure).\n" + " -T DBM Type (SDBM|GDBM|DB|default).\n" + " -l Display usernames from database on stdout.\n" + " -v Verify the username/password.\n" + " -x Remove the username record from database.\n" + " -t The last param is username comment.\n" + "The SHA algorithm does not use a salt and is less secure than the " + "MD5 algorithm.\n", + BCRYPT_DEFAULT_COST); + exit(ERR_SYNTAX); +} + +int main(int argc, const char * const argv[]) +{ + apr_pool_t *pool; + apr_status_t rv; + char errbuf[MAX_STRING_LEN]; + int need_file = 1; + int need_user = 1; + int need_pwd = 1; + int need_cmnt = 0; + int changed = 0; + int cmd = HTDBM_MAKE; + int i, ret, args_left = 2; + apr_getopt_t *state; + char opt; + const char *opt_arg; + + apr_app_initialize(&argc, &argv, NULL); + atexit(terminate); + + if ((rv = htdbm_init(&pool, &h)) != APR_SUCCESS) { + fprintf(stderr, "Unable to initialize htdbm terminating!\n"); + apr_strerror(rv, errbuf, sizeof(errbuf)); + exit(1); + } + + rv = apr_getopt_init(&state, pool, argc, argv); + if (rv != APR_SUCCESS) + exit(ERR_SYNTAX); + + while ((rv = apr_getopt(state, "cnmspdBbtivxlC:T:", &opt, &opt_arg)) == APR_SUCCESS) { + switch (opt) { + case 'c': + h->create = 1; + break; + case 'n': + need_file = 0; + cmd = HTDBM_NOFILE; + args_left--; + break; + case 'l': + need_pwd = 0; + need_user = 0; + cmd = HTDBM_LIST; + h->rdonly = 1; + args_left--; + break; + case 't': + need_cmnt = 1; + args_left++; + break; + case 'T': + h->type = apr_pstrdup(h->ctx.pool, opt_arg); + break; + case 'v': + h->rdonly = 1; + cmd = HTDBM_VERIFY; + break; + case 'x': + need_pwd = 0; + cmd = HTDBM_DELETE; + break; + default: + ret = parse_common_options(&h->ctx, opt, opt_arg); + if (ret) { + fprintf(stderr, "Error: %s\n", h->ctx.errstr); + exit(ret); + } + } + } + if (h->ctx.passwd_src == PW_ARG) { + need_pwd = 0; + args_left++; + } + /* + * Make sure we still have exactly the right number of arguments left + * (the filename, the username, and possibly the password if -b was + * specified). + */ + i = state->ind; + if (rv != APR_EOF || argc - i != args_left) + htdbm_usage(); + + if (need_file) { + h->filename = apr_pstrdup(h->ctx.pool, argv[i++]); + if ((rv = htdbm_open(h)) != APR_SUCCESS) { + fprintf(stderr, "Error opening database %s\n", h->filename); + apr_strerror(rv, errbuf, sizeof(errbuf)); + fprintf(stderr,"%s\n",errbuf); + exit(ERR_FILEPERM); + } + } + if (need_user) { + h->username = apr_pstrdup(pool, argv[i++]); + if (htdbm_valid_username(h) != APR_SUCCESS) + exit(ERR_BADUSER); + } + if (h->ctx.passwd_src == PW_ARG) + h->ctx.passwd = apr_pstrdup(pool, argv[i++]); + + if (need_pwd) { + ret = get_password(&h->ctx); + if (ret) { + fprintf(stderr, "Error: %s\n", h->ctx.errstr); + exit(ret); + } + } + if (need_cmnt) + h->comment = apr_pstrdup(pool, argv[i++]); + + switch (cmd) { + case HTDBM_VERIFY: + if ((rv = htdbm_verify(h)) != APR_SUCCESS) { + if (APR_STATUS_IS_ENOENT(rv)) { + fprintf(stderr, "The user '%s' could not be found in database\n", h->username); + exit(ERR_BADUSER); + } + else { + fprintf(stderr, "Password mismatch for user '%s'\n", h->username); + exit(ERR_PWMISMATCH); + } + } + else + fprintf(stderr, "Password validated for user '%s'\n", h->username); + break; + case HTDBM_DELETE: + if (htdbm_del(h) != APR_SUCCESS) { + fprintf(stderr, "Cannot find user '%s' in database\n", h->username); + exit(ERR_BADUSER); + } + h->username = NULL; + changed = 1; + break; + case HTDBM_LIST: + htdbm_list(h); + break; + default: + ret = htdbm_make(h); + if (ret) + exit(ret); + break; + } + if (need_file && !h->rdonly) { + if ((rv = htdbm_save(h, &changed)) != APR_SUCCESS) { + apr_strerror(rv, errbuf, sizeof(errbuf)); + exit(ERR_FILEPERM); + } + fprintf(stdout, "Database %s %s.\n", h->filename, + h->create ? "created" : (changed ? "modified" : "updated")); + } + if (cmd == HTDBM_NOFILE) { + if (!need_cmnt) { + fprintf(stderr, "%s:%s\n", h->username, h->ctx.passwd); + } + else { + fprintf(stderr, "%s:%s:%s\n", h->username, h->ctx.passwd, + h->comment); + } + } + htdbm_terminate(h); + + return 0; /* Suppress compiler warning. */ +} |