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Diffstat (limited to '')
| -rw-r--r-- | src/rspamadm/pw.c | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/src/rspamadm/pw.c b/src/rspamadm/pw.c new file mode 100644 index 0000000..9fe9cd7 --- /dev/null +++ b/src/rspamadm/pw.c @@ -0,0 +1,392 @@ +/*- + * 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(gint argc, gchar **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 gchar *type = "catena"; +static gchar *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; + guint 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; + guchar *salt, *key; + gchar *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$%s", pbkdf->id, encoded_salt, + encoded_key); + + g_free(encoded_salt); + g_free(encoded_key); + rspamd_explicit_memzero(password, plen); + g_free(password); + password = result->str; + g_string_free(result, FALSE); /* Not freeing memory */ + + return password; +} + +static const gchar * +rspamd_encrypted_password_get_str(const gchar *password, gsize skip, + gsize *length) +{ + const gchar *str, *start, *end; + gsize size; + + start = password + skip; + end = start; + size = 0; + + while (*end != '\0' && g_ascii_isalnum(*end)) { + size++; + end++; + } + + if (size) { + str = start; + *length = size; + } + else { + str = NULL; + } + + return str; +} + +static void +rspamadm_pw_check(void) +{ + const struct rspamd_controller_pbkdf *pbkdf = NULL; + const gchar *salt, *hash; + const gchar *start, *end; + guchar *salt_decoded, *key_decoded, *local_key; + gsize salt_len, key_len, size; + gchar test_password[8192], encrypted_password[8192]; + gsize plen, i; + gint id; + gboolean ret = FALSE; + + if (password == NULL) { + plen = rspamd_read_passphrase_with_prompt("Enter encrypted password: ", encrypted_password, + sizeof(encrypted_password), 1, NULL); + } + else { + plen = rspamd_strlcpy(encrypted_password, password, sizeof(encrypted_password)); + } + + if (encrypted_password[0] == '$') { + /* Parse id */ + start = encrypted_password + 1; + end = start; + size = 0; + + while (*end != '\0' && g_ascii_isdigit(*end)) { + size++; + end++; + } + + if (size > 0) { + gchar *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 gint +rspamadm_pw_lua_encrypt(lua_State *L) +{ + const gchar *pw_in = NULL; + gchar *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; + guint 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(gint argc, gchar **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) { + gchar *encr = rspamadm_pw_encrypt(password); + rspamd_printf("%s\n", encr); + g_free(encr); + } + else if (do_check) { + rspamadm_pw_check(); + } +} |