- /*-
- * Copyright 2016 Vsevolod Stakhov
- *
- * Licensed 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.
- */
- #include "config.h"
- #include "util.h"
- #include "ottery.h"
- #include "cryptobox.h"
- #include "rspamd.h"
- #include "rspamadm.h"
- #include "unix-std.h"
-
- static void rspamadm_pw(int argc, char **argv,
- const struct rspamadm_command *cmd);
- static const char *rspamadm_pw_help(gboolean full_help,
- const struct rspamadm_command *cmd);
- static void rspamadm_pw_lua_subrs(gpointer pL);
-
- static gboolean do_encrypt = FALSE;
- static gboolean do_check = FALSE;
- static gboolean quiet = FALSE;
- static gboolean list = FALSE;
- static char *type = "catena";
- static char *password = NULL;
-
- struct rspamadm_command pw_command = {
- .name = "pw",
- .flags = 0,
- .help = rspamadm_pw_help,
- .run = rspamadm_pw,
- .lua_subrs = rspamadm_pw_lua_subrs,
- };
-
- static GOptionEntry entries[] = {
- {"encrypt", 'e', 0, G_OPTION_ARG_NONE, &do_encrypt,
- "Encrypt password", NULL},
- {"check", 'c', 0, G_OPTION_ARG_NONE, &do_check,
- "Check password", NULL},
- {"quiet", 'q', 0, G_OPTION_ARG_NONE, &quiet,
- "Suppress output", NULL},
- {"password", 'p', 0, G_OPTION_ARG_STRING, &password,
- "Input password", NULL},
- {"type", 't', 0, G_OPTION_ARG_STRING, &type,
- "PBKDF type", NULL},
- {"list", 'l', 0, G_OPTION_ARG_NONE, &list,
- "List available algorithms", NULL},
- {NULL, 0, 0, G_OPTION_ARG_NONE, NULL, NULL, NULL}};
-
- static const char *
- rspamadm_pw_help(gboolean full_help, const struct rspamadm_command *cmd)
- {
- const char *help_str;
-
- if (full_help) {
- help_str = "Manipulate with passwords in Rspamd\n\n"
- "Usage: rspamadm pw [command]\n"
- "Where commands are:\n\n"
- "--encrypt: encrypt password (this is a default command)\n"
- "--check: check encrypted password using encrypted password\n"
- "--list: list available pbkdf algorithms\n"
- "--password: input password\n"
- "--type: select the specified pbkdf type\n"
- "--help: shows available options and commands";
- }
- else {
- help_str = "Manage rspamd passwords";
- }
-
- return help_str;
- }
-
- static const struct rspamd_controller_pbkdf *
- rspamadm_get_pbkdf(void)
- {
- const struct rspamd_controller_pbkdf *pbkdf;
- unsigned int i;
-
- for (i = 0; i < RSPAMD_PBKDF_ID_MAX - 1; i++) {
- pbkdf = &pbkdf_list[i];
-
- if (strcmp(type, pbkdf->alias) == 0) {
- return pbkdf;
- }
- }
-
- rspamd_fprintf(stderr, "Unknown PKDF type: %s\n", type);
- exit(EXIT_FAILURE);
-
- return NULL;
- }
-
- static char *
- rspamadm_pw_encrypt(char *password)
- {
- const struct rspamd_controller_pbkdf *pbkdf;
- unsigned char *salt, *key;
- char *encoded_salt, *encoded_key;
- GString *result;
- gsize plen;
-
- pbkdf = rspamadm_get_pbkdf();
- g_assert(pbkdf != NULL);
-
- if (password == NULL) {
- plen = 8192;
- password = g_malloc0(plen);
- plen = rspamd_read_passphrase(password, plen, 0, NULL);
- }
- else {
- plen = strlen(password);
- }
-
- if (plen == 0) {
- fprintf(stderr, "Invalid password\n");
- exit(EXIT_FAILURE);
- }
-
- salt = g_alloca(pbkdf->salt_len);
- key = g_alloca(pbkdf->key_len);
- ottery_rand_bytes(salt, pbkdf->salt_len);
- /* Derive key */
- rspamd_cryptobox_pbkdf(password, strlen(password),
- salt, pbkdf->salt_len, key, pbkdf->key_len, pbkdf->complexity,
- pbkdf->type);
-
- encoded_salt = rspamd_encode_base32(salt, pbkdf->salt_len, RSPAMD_BASE32_DEFAULT);
- encoded_key = rspamd_encode_base32(key, pbkdf->key_len, RSPAMD_BASE32_DEFAULT);
-
- result = g_string_new("");
- rspamd_printf_gstring(result, "$%d$%s$%s", pbkdf->id, encoded_salt,
- encoded_key);
-
- g_free(encoded_salt);
- g_free(encoded_key);
- rspamd_explicit_memzero(password, plen);
- g_free(password);
- password = result->str;
- g_string_free(result, FALSE); /* Not freeing memory */
-
- return password;
- }
-
- static const char *
- rspamd_encrypted_password_get_str(const char *password, gsize skip,
- gsize *length)
- {
- const char *str, *start, *end;
- gsize size;
-
- start = password + skip;
- end = start;
- size = 0;
-
- while (*end != '\0' && g_ascii_isalnum(*end)) {
- size++;
- end++;
- }
-
- if (size) {
- str = start;
- *length = size;
- }
- else {
- str = NULL;
- }
-
- return str;
- }
-
- static void
- rspamadm_pw_check(void)
- {
- const struct rspamd_controller_pbkdf *pbkdf = NULL;
- const char *salt, *hash;
- const char *start, *end;
- unsigned char *salt_decoded, *key_decoded, *local_key;
- gsize salt_len, key_len, size;
- char test_password[8192], encrypted_password[8192];
- gsize plen, i;
- int id;
- gboolean ret = FALSE;
-
- if (password == NULL) {
- plen = rspamd_read_passphrase_with_prompt("Enter encrypted password: ", encrypted_password,
- sizeof(encrypted_password), 1, NULL);
- }
- else {
- plen = rspamd_strlcpy(encrypted_password, password, sizeof(encrypted_password));
- }
-
- if (encrypted_password[0] == '$') {
- /* Parse id */
- start = encrypted_password + 1;
- end = start;
- size = 0;
-
- while (*end != '\0' && g_ascii_isdigit(*end)) {
- size++;
- end++;
- }
-
- if (size > 0) {
- char *endptr;
- id = strtoul(start, &endptr, 10);
-
- if ((endptr == NULL || *endptr == *end)) {
- for (i = 0; i < RSPAMD_PBKDF_ID_MAX - 1; i++) {
- pbkdf = &pbkdf_list[i];
-
- if (pbkdf->id == id) {
- ret = TRUE;
- break;
- }
- }
- }
- }
- }
-
- if (!ret) {
- rspamd_fprintf(stderr, "Invalid password format\n");
- rspamd_explicit_memzero(encrypted_password, sizeof(encrypted_password));
- exit(EXIT_FAILURE);
- }
-
- if (plen < pbkdf->salt_len + pbkdf->key_len + 3) {
- msg_err("incorrect salt: password length: %z, must be at least %z characters",
- plen, pbkdf->salt_len);
- rspamd_explicit_memzero(encrypted_password, sizeof(encrypted_password));
- exit(EXIT_FAILURE);
- }
-
- /* get salt */
- salt = rspamd_encrypted_password_get_str(encrypted_password, 3, &salt_len);
- /* get hash */
- hash = rspamd_encrypted_password_get_str(encrypted_password,
- 3 + salt_len + 1,
- &key_len);
- if (salt != NULL && hash != NULL) {
-
- /* decode salt */
- salt_decoded = rspamd_decode_base32(salt, salt_len, &salt_len, RSPAMD_BASE32_DEFAULT);
-
- if (salt_decoded == NULL || salt_len != pbkdf->salt_len) {
- /* We have some unknown salt here */
- rspamd_explicit_memzero(encrypted_password, sizeof(encrypted_password));
- msg_err("incorrect salt: %z, while %z expected",
- salt_len, pbkdf->salt_len);
- exit(EXIT_FAILURE);
- }
-
- key_decoded = rspamd_decode_base32(hash, key_len, &key_len, RSPAMD_BASE32_DEFAULT);
-
- if (key_decoded == NULL || key_len != pbkdf->key_len) {
- /* We have some unknown salt here */
- rspamd_explicit_memzero(encrypted_password, sizeof(encrypted_password));
- msg_err("incorrect key: %z, while %z expected",
- key_len, pbkdf->key_len);
- exit(EXIT_FAILURE);
- }
-
- plen = rspamd_read_passphrase(test_password, sizeof(test_password),
- 0, NULL);
- if (plen == 0) {
- rspamd_explicit_memzero(encrypted_password, sizeof(encrypted_password));
- fprintf(stderr, "Invalid password\n");
- exit(EXIT_FAILURE);
- }
-
- local_key = g_alloca(pbkdf->key_len);
- rspamd_cryptobox_pbkdf(test_password, plen,
- salt_decoded, salt_len,
- local_key, pbkdf->key_len,
- pbkdf->complexity,
- pbkdf->type);
- rspamd_explicit_memzero(test_password, plen);
- rspamd_explicit_memzero(encrypted_password, sizeof(encrypted_password));
-
- if (!rspamd_constant_memcmp(key_decoded, local_key, pbkdf->key_len)) {
- if (!quiet) {
- rspamd_printf("password incorrect\n");
- }
- exit(EXIT_FAILURE);
- }
-
- g_free(salt_decoded);
- g_free(key_decoded);
- }
- else {
- msg_err("bad encrypted password format");
- rspamd_explicit_memzero(encrypted_password, sizeof(encrypted_password));
- exit(EXIT_FAILURE);
- }
-
- if (!quiet) {
- rspamd_printf("password correct\n");
- }
- }
-
- static int
- rspamadm_pw_lua_encrypt(lua_State *L)
- {
- const char *pw_in = NULL;
- char *ret, *tmp = NULL;
-
- if (lua_type(L, 1) == LUA_TSTRING) {
- pw_in = lua_tostring(L, 1);
- tmp = g_strdup(pw_in);
- }
-
- ret = rspamadm_pw_encrypt(tmp);
-
- lua_pushstring(L, ret);
- g_free(ret);
-
- return 1;
- }
-
-
- static void
- rspamadm_pw_lua_subrs(gpointer pL)
- {
- lua_State *L = pL;
-
- lua_pushstring(L, "pw_encrypt");
- lua_pushcfunction(L, rspamadm_pw_lua_encrypt);
- lua_settable(L, -3);
- }
-
- static void
- rspamadm_alg_list(void)
- {
- const struct rspamd_controller_pbkdf *pbkdf;
- unsigned int i;
-
- for (i = 0; i < RSPAMD_PBKDF_ID_MAX - 1; i++) {
- pbkdf = &pbkdf_list[i];
-
- rspamd_printf("%s: %s - %s\n", pbkdf->alias, pbkdf->name,
- pbkdf->description);
- }
- }
-
- static void
- rspamadm_pw(int argc, char **argv, const struct rspamadm_command *cmd)
- {
- GOptionContext *context;
- GError *error = NULL;
-
- context = g_option_context_new("pw [--encrypt | --check] - manage rspamd passwords");
- g_option_context_set_summary(context,
- "Summary:\n Rspamd administration utility version " RVERSION
- "\n Release id: " RID);
- g_option_context_add_main_entries(context, entries, NULL);
-
- if (!g_option_context_parse(context, &argc, &argv, &error)) {
- fprintf(stderr, "option parsing failed: %s\n", error->message);
- g_error_free(error);
- g_option_context_free(context);
- exit(EXIT_FAILURE);
- }
-
- g_option_context_free(context);
-
- if (list) {
- rspamadm_alg_list();
- exit(EXIT_SUCCESS);
- }
-
- if (!do_encrypt && !do_check) {
- do_encrypt = TRUE;
- }
-
- if (do_encrypt) {
- char *encr = rspamadm_pw_encrypt(password);
- rspamd_printf("%s\n", encr);
- g_free(encr);
- }
- else if (do_check) {
- rspamadm_pw_check();
- }
- }
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