Adding upstream version 2.4.57.upstream/2.4.57

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 524 insertions, 0 deletions

diff --git a/support/htpasswd.c b/support/htpasswd.c
new file mode 100644
index 0000000..7dd5af9
--- /dev/null
+++ b/support/htpasswd.c
@@ -0,0 +1,524 @@
+/* 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!
+ ******************************************************************************
+ *****************************************************************************/
+/*
+ * htpasswd.c: simple program for manipulating password file for
+ * the Apache HTTP server
+ *
+ * Originally by Rob McCool
+ *
+ * Exit values:
+ *  0: Success
+ *  1: Failure; file access/permission problem
+ *  2: Failure; command line syntax problem (usage message issued)
+ *  3: Failure; password verification failure
+ *  4: Failure; operation interrupted (such as with CTRL/C)
+ *  5: Failure; buffer would overflow (username, filename, or computed
+ *     record too long)
+ *  6: Failure; username contains illegal or reserved characters
+ *  7: Failure; file is not a valid htpasswd file
+ */
+
+#include "passwd_common.h"
+#include "apr_signal.h"
+#include "apr_getopt.h"
+
+#if APR_HAVE_STDIO_H
+#include <stdio.h>
+#endif
+
+#include "apr_md5.h"
+#include "apr_sha1.h"
+
+#if APR_HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#if APR_HAVE_STRING_H
+#include <string.h>
+#endif
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef WIN32
+#include <conio.h>
+#define unlink _unlink
+#endif
+
+#define APHTP_NEWFILE        1
+#define APHTP_NOFILE         2
+#define APHTP_DELUSER        4
+#define APHTP_VERIFY         8
+
+apr_file_t *ftemp = NULL;
+
+static int mkrecord(struct passwd_ctx *ctx, char *user)
+{
+    char hash_str[MAX_STRING_LEN];
+    int ret;
+
+    ctx->out = hash_str;
+    ctx->out_len = sizeof(hash_str);
+
+    ret = mkhash(ctx);
+    if (ret) {
+        ctx->out = NULL;
+        ctx->out_len = 0;
+        return ret;
+    }
+
+    ctx->out = apr_pstrcat(ctx->pool, user, ":", hash_str, NL, NULL);
+    ctx->out_len = strlen(ctx->out);
+    if (ctx->out_len >= MAX_STRING_LEN) {
+        ctx->errstr = "resultant record too long";
+        return ERR_OVERFLOW;
+    }
+    return 0;
+}
+
+static void usage(void)
+{
+    apr_file_printf(errfile, "Usage:" NL
+        "\thtpasswd [-cimBdpsDv] [-C cost] passwordfile username" NL
+        "\thtpasswd -b[cmBdpsDv] [-C cost] passwordfile username password" NL
+        NL
+        "\thtpasswd -n[imBdps] [-C cost] username" NL
+        "\thtpasswd -nb[mBdps] [-C cost] username password" NL
+        " -c  Create a new file." NL
+        " -n  Don't update file; display results on stdout." NL
+        " -b  Use the password from the command line rather than prompting "
+            "for it." NL
+        " -i  Read password from stdin without verification (for script usage)." NL
+        " -m  Force MD5 encryption of the password (default)." NL
+        " -B  Force bcrypt encryption of the password (very secure)." NL
+        " -C  Set the computing time used for the bcrypt algorithm" NL
+        "     (higher is more secure but slower, default: %d, valid: 4 to 17)." NL
+        " -d  Force CRYPT encryption of the password (8 chars max, insecure)." NL
+        " -s  Force SHA encryption of the password (insecure)." NL
+        " -p  Do not encrypt the password (plaintext, insecure)." NL
+        " -D  Delete the specified user." NL
+        " -v  Verify password for the specified user." NL
+        "On other systems than Windows and NetWare the '-p' flag will "
+            "probably not work." NL
+        "The SHA algorithm does not use a salt and is less secure than the "
+            "MD5 algorithm." NL,
+        BCRYPT_DEFAULT_COST
+    );
+    exit(ERR_SYNTAX);
+}
+
+/*
+ * Check to see if the specified file can be opened for the given
+ * access.
+ */
+static int accessible(apr_pool_t *pool, char *fname, int mode)
+{
+    apr_file_t *f = NULL;
+
+    if (apr_file_open(&f, fname, mode, APR_OS_DEFAULT, pool) != APR_SUCCESS) {
+        return 0;
+    }
+    apr_file_close(f);
+    return 1;
+}
+
+/*
+ * Return true if the named file exists, regardless of permissions.
+ */
+static int exists(char *fname, apr_pool_t *pool)
+{
+    apr_finfo_t sbuf;
+    apr_status_t check;
+
+    check = apr_stat(&sbuf, fname, APR_FINFO_TYPE, pool);
+    return ((check || sbuf.filetype != APR_REG) ? 0 : 1);
+}
+
+static void terminate(void)
+{
+    apr_terminate();
+#ifdef NETWARE
+    pressanykey();
+#endif
+}
+
+static void check_args(int argc, const char *const argv[],
+                       struct passwd_ctx *ctx, unsigned *mask, char **user,
+                       char **pwfilename)
+{
+    const char *arg;
+    int args_left = 2;
+    int i, ret;
+    apr_getopt_t *state;
+    apr_status_t rv;
+    char opt;
+    const char *opt_arg;
+    apr_pool_t *pool = ctx->pool;
+
+    rv = apr_getopt_init(&state, pool, argc, argv);
+    if (rv != APR_SUCCESS)
+        exit(ERR_SYNTAX);
+
+    while ((rv = apr_getopt(state, "cnmspdBbDiC:v", &opt, &opt_arg)) == APR_SUCCESS) {
+        switch (opt) {
+        case 'c':
+            *mask |= APHTP_NEWFILE;
+            break;
+        case 'n':
+            args_left--;
+            *mask |= APHTP_NOFILE;
+            break;
+        case 'D':
+            *mask |= APHTP_DELUSER;
+            break;
+        case 'v':
+            *mask |= APHTP_VERIFY;
+            break;
+        default:
+            ret = parse_common_options(ctx, opt, opt_arg);
+            if (ret) {
+                apr_file_printf(errfile, "%s: %s" NL, argv[0], ctx->errstr);
+                exit(ret);
+            }
+        }
+    }
+    if (ctx->passwd_src == PW_ARG)
+        args_left++;
+    if (rv != APR_EOF)
+        usage();
+
+    if ((*mask) & (*mask - 1)) {
+        /* not a power of two, i.e. more than one flag specified */
+        apr_file_printf(errfile, "%s: only one of -c -n -v -D may be specified" NL,
+            argv[0]);
+        exit(ERR_SYNTAX);
+    }
+    if ((*mask & APHTP_VERIFY) && ctx->passwd_src == PW_PROMPT)
+        ctx->passwd_src = PW_PROMPT_VERIFY;
+
+    /*
+     * 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 ((argc - i) != args_left) {
+        usage();
+    }
+
+    if (!(*mask & APHTP_NOFILE)) {
+        if (strlen(argv[i]) > (APR_PATH_MAX - 1)) {
+            apr_file_printf(errfile, "%s: filename too long" NL, argv[0]);
+            exit(ERR_OVERFLOW);
+        }
+        *pwfilename = apr_pstrdup(pool, argv[i++]);
+    }
+    if (strlen(argv[i]) > (MAX_STRING_LEN - 1)) {
+        apr_file_printf(errfile, "%s: username too long (> %d)" NL,
+                        argv[0], MAX_STRING_LEN - 1);
+        exit(ERR_OVERFLOW);
+    }
+    *user = apr_pstrdup(pool, argv[i++]);
+    if ((arg = strchr(*user, ':')) != NULL) {
+        apr_file_printf(errfile, "%s: username contains illegal "
+                        "character '%c'" NL, argv[0], *arg);
+        exit(ERR_BADUSER);
+    }
+    if (ctx->passwd_src == PW_ARG) {
+        if (strlen(argv[i]) > (MAX_STRING_LEN - 1)) {
+            apr_file_printf(errfile, "%s: password too long (> %d)" NL,
+                argv[0], MAX_STRING_LEN);
+            exit(ERR_OVERFLOW);
+        }
+        ctx->passwd = apr_pstrdup(pool, argv[i]);
+    }
+}
+
+static int verify(struct passwd_ctx *ctx, const char *hash)
+{
+    apr_status_t rv;
+    int ret;
+
+    if (ctx->passwd == NULL && (ret = get_password(ctx)) != 0)
+       return ret;
+    rv = apr_password_validate(ctx->passwd, hash);
+    if (rv == APR_SUCCESS)
+        return 0;
+    if (APR_STATUS_IS_EMISMATCH(rv)) {
+        ctx->errstr = "password verification failed";
+        return ERR_PWMISMATCH;
+    }
+    ctx->errstr = apr_psprintf(ctx->pool, "Could not verify password: %pm",
+                               &rv);
+    return ERR_GENERAL;
+}
+
+/*
+ * Let's do it.  We end up doing a lot of file opening and closing,
+ * but what do we care?  This application isn't run constantly.
+ */
+int main(int argc, const char * const argv[])
+{
+    apr_file_t *fpw = NULL;
+    char line[MAX_STRING_LEN];
+    char *pwfilename = NULL;
+    char *user = NULL;
+    char tn[] = "htpasswd.tmp.XXXXXX";
+    char *dirname;
+    char *scratch, cp[MAX_STRING_LEN];
+    int found = 0;
+    int i;
+    unsigned mask = 0;
+    apr_pool_t *pool;
+    int existing_file = 0;
+    struct passwd_ctx ctx = { 0 };
+#if APR_CHARSET_EBCDIC
+    apr_status_t rv;
+    apr_xlate_t *to_ascii;
+#endif
+
+    apr_app_initialize(&argc, &argv, NULL);
+    atexit(terminate);
+    apr_pool_create(&pool, NULL);
+    apr_pool_abort_set(abort_on_oom, pool);
+    apr_file_open_stderr(&errfile, pool);
+    ctx.pool = pool;
+    ctx.alg = ALG_APMD5;
+
+#if APR_CHARSET_EBCDIC
+    rv = apr_xlate_open(&to_ascii, "ISO-8859-1", APR_DEFAULT_CHARSET, pool);
+    if (rv) {
+        apr_file_printf(errfile, "apr_xlate_open(to ASCII)->%d" NL, rv);
+        exit(1);
+    }
+    rv = apr_SHA1InitEBCDIC(to_ascii);
+    if (rv) {
+        apr_file_printf(errfile, "apr_SHA1InitEBCDIC()->%d" NL, rv);
+        exit(1);
+    }
+    rv = apr_MD5InitEBCDIC(to_ascii);
+    if (rv) {
+        apr_file_printf(errfile, "apr_MD5InitEBCDIC()->%d" NL, rv);
+        exit(1);
+    }
+#endif /*APR_CHARSET_EBCDIC*/
+
+    check_args(argc, argv, &ctx, &mask, &user, &pwfilename);
+
+    /*
+     * Only do the file checks if we're supposed to frob it.
+     */
+    if (!(mask & APHTP_NOFILE)) {
+        existing_file = exists(pwfilename, pool);
+        if (existing_file && (mask & APHTP_VERIFY) == 0) {
+            /*
+             * Check that this existing file is readable and writable.
+             */
+            if (!accessible(pool, pwfilename, APR_FOPEN_READ|APR_FOPEN_WRITE)) {
+                apr_file_printf(errfile, "%s: cannot open file %s for "
+                                "read/write access" NL, argv[0], pwfilename);
+                exit(ERR_FILEPERM);
+            }
+        }
+        else if (existing_file && (mask & APHTP_VERIFY) != 0) {
+            /*
+             * Check that this existing file is readable.
+             */
+            if (!accessible(pool, pwfilename, APR_FOPEN_READ)) {
+                apr_file_printf(errfile, "%s: cannot open file %s for "
+                                "read access" NL, argv[0], pwfilename);
+                exit(ERR_FILEPERM);
+            }
+        }
+        else {
+            /*
+             * Error out if -c was omitted for this non-existent file.
+             */
+            if (!(mask & APHTP_NEWFILE)) {
+                apr_file_printf(errfile,
+                        "%s: cannot modify file %s; use '-c' to create it" NL,
+                        argv[0], pwfilename);
+                exit(ERR_FILEPERM);
+            }
+            /*
+             * As it doesn't exist yet, verify that we can create it.
+             */
+            if (!accessible(pool, pwfilename, APR_FOPEN_WRITE|APR_FOPEN_CREATE)) {
+                apr_file_printf(errfile, "%s: cannot create file %s" NL,
+                                argv[0], pwfilename);
+                exit(ERR_FILEPERM);
+            }
+        }
+    }
+
+    /*
+     * All the file access checks (if any) have been made.  Time to go to work;
+     * try to create the record for the username in question.  If that
+     * fails, there's no need to waste any time on file manipulations.
+     * Any error message text is returned in the record buffer, since
+     * the mkrecord() routine doesn't have access to argv[].
+     */
+    if ((mask & (APHTP_DELUSER|APHTP_VERIFY)) == 0) {
+        i = mkrecord(&ctx, user);
+        if (i != 0) {
+            apr_file_printf(errfile, "%s: %s" NL, argv[0], ctx.errstr);
+            exit(i);
+        }
+        if (mask & APHTP_NOFILE) {
+            printf("%s" NL, ctx.out);
+            exit(0);
+        }
+    }
+
+    if ((mask & APHTP_VERIFY) == 0) {
+        /*
+         * We can access the files the right way, and we have a record
+         * to add or update.  Let's do it..
+         */
+        if (apr_temp_dir_get((const char**)&dirname, pool) != APR_SUCCESS) {
+            apr_file_printf(errfile, "%s: could not determine temp dir" NL,
+                            argv[0]);
+            exit(ERR_FILEPERM);
+        }
+        dirname = apr_psprintf(pool, "%s/%s", dirname, tn);
+
+        if (apr_file_mktemp(&ftemp, dirname, 0, pool) != APR_SUCCESS) {
+            apr_file_printf(errfile, "%s: unable to create temporary file %s" NL,
+                            argv[0], dirname);
+            exit(ERR_FILEPERM);
+        }
+    }
+
+    /*
+     * If we're not creating a new file, copy records from the existing
+     * one to the temporary file until we find the specified user.
+     */
+    if (existing_file && !(mask & APHTP_NEWFILE)) {
+        if (apr_file_open(&fpw, pwfilename, APR_READ | APR_BUFFERED,
+                          APR_OS_DEFAULT, pool) != APR_SUCCESS) {
+            apr_file_printf(errfile, "%s: unable to read file %s" NL,
+                            argv[0], pwfilename);
+            exit(ERR_FILEPERM);
+        }
+        while (apr_file_gets(line, sizeof(line), fpw) == APR_SUCCESS) {
+            char *colon;
+
+            strcpy(cp, line);
+            scratch = cp;
+            while (apr_isspace(*scratch)) {
+                ++scratch;
+            }
+
+            if (!*scratch || (*scratch == '#')) {
+                putline(ftemp, line);
+                continue;
+            }
+            /*
+             * See if this is our user.
+             */
+            colon = strchr(scratch, ':');
+            if (colon != NULL) {
+                *colon = '\0';
+            }
+            else {
+                /*
+                 * If we've not got a colon on the line, this could well
+                 * not be a valid htpasswd file.
+                 * We should bail at this point.
+                 */
+                apr_file_printf(errfile, "%s: The file %s does not appear "
+                                         "to be a valid htpasswd file." NL,
+                                argv[0], pwfilename);
+                apr_file_close(fpw);
+                exit(ERR_INVALID);
+            }
+            if (strcmp(user, scratch) != 0) {
+                putline(ftemp, line);
+                continue;
+            }
+            else {
+                /* We found the user we were looking for */
+                found++;
+                if ((mask & APHTP_DELUSER)) {
+                    /* Delete entry from the file */
+                    apr_file_printf(errfile, "Deleting ");
+                }
+                else if ((mask & APHTP_VERIFY)) {
+                    /* Verify */
+                    char *hash = colon + 1;
+                    size_t len;
+
+                    len = strcspn(hash, "\r\n");
+                    if (len == 0) {
+                        apr_file_printf(errfile, "Empty hash for user %s" NL,
+                                        user);
+                        exit(ERR_INVALID);
+                    }
+                    hash[len] = '\0';
+
+                    i = verify(&ctx, hash);
+                    if (i != 0) {
+                        apr_file_printf(errfile, "%s" NL, ctx.errstr);
+                        exit(i);
+                    }
+                }
+                else {
+                    /* Update entry */
+                    apr_file_printf(errfile, "Updating ");
+                    putline(ftemp, ctx.out);
+                }
+            }
+        }
+        apr_file_close(fpw);
+    }
+    if (!found) {
+        if (mask & APHTP_DELUSER) {
+            apr_file_printf(errfile, "User %s not found" NL, user);
+            exit(0);
+        }
+        else if (mask & APHTP_VERIFY) {
+            apr_file_printf(errfile, "User %s not found" NL, user);
+            exit(ERR_BADUSER);
+        }
+        else {
+            apr_file_printf(errfile, "Adding ");
+            putline(ftemp, ctx.out);
+        }
+    }
+    if (mask & APHTP_VERIFY) {
+        apr_file_printf(errfile, "Password for user %s correct." NL, user);
+        exit(0);
+    }
+
+    apr_file_printf(errfile, "password for user %s" NL, user);
+
+    /* The temporary file has all the data, just copy it to the new location.
+     */
+    if (apr_file_copy(dirname, pwfilename, APR_OS_DEFAULT, pool) !=
+        APR_SUCCESS) {
+        apr_file_printf(errfile, "%s: unable to update file %s" NL,
+                        argv[0], pwfilename);
+        exit(ERR_FILEPERM);
+    }
+    apr_file_close(ftemp);
+    return 0;
+}