diff options
Diffstat (limited to 'lib/keychain.c')
| -rw-r--r-- | lib/keychain.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/lib/keychain.c b/lib/keychain.c index 02f83ef0a8..c29c45a114 100644 --- a/lib/keychain.c +++ b/lib/keychain.c @@ -18,6 +18,7 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include "config.h" #include <zebra.h> #include "command.h" @@ -207,6 +208,7 @@ static struct key *key_get(const struct keychain *keychain, uint32_t index) key = key_new(); key->index = index; + key->hash_algo = KEYCHAIN_ALGO_NULL; listnode_add_sort(keychain->key, key); return key; @@ -336,6 +338,133 @@ DEFUN (no_key_string, return CMD_SUCCESS; } +const struct keychain_algo_info algo_info[] = { + {KEYCHAIN_ALGO_NULL, "null", 0, 0, "NULL"}, + {KEYCHAIN_ALGO_MD5, "md5", KEYCHAIN_MD5_HASH_SIZE, + KEYCHAIN_ALGO_MD5_INTERNAL_BLK_SIZE, "MD5"}, + {KEYCHAIN_ALGO_HMAC_SHA1, "hmac-sha-1", KEYCHAIN_HMAC_SHA1_HASH_SIZE, + KEYCHAIN_ALGO_SHA1_INTERNAL_BLK_SIZE, "HMAC-SHA-1"}, + {KEYCHAIN_ALGO_HMAC_SHA256, "hmac-sha-256", + KEYCHAIN_HMAC_SHA256_HASH_SIZE, KEYCHAIN_ALGO_SHA256_INTERNAL_BLK_SIZE, + "HMAC-SHA-256"}, + {KEYCHAIN_ALGO_HMAC_SHA384, "hmac-sha-384", + KEYCHAIN_HMAC_SHA384_HASH_SIZE, KEYCHAIN_ALGO_SHA384_INTERNAL_BLK_SIZE, + "HMAC-SHA-384"}, + {KEYCHAIN_ALGO_HMAC_SHA512, "hmac-sha-512", + KEYCHAIN_HMAC_SHA512_HASH_SIZE, KEYCHAIN_ALGO_SHA512_INTERNAL_BLK_SIZE, + "HMAC-SHA-512"}, + {KEYCHAIN_ALGO_MAX, "max", KEYCHAIN_MAX_HASH_SIZE, + KEYCHAIN_ALGO_MAX_INTERNAL_BLK_SIZE, "Not defined"} +}; + +uint16_t keychain_get_block_size(enum keychain_hash_algo key) +{ + return algo_info[key].block; +} + +uint16_t keychain_get_hash_len(enum keychain_hash_algo key) +{ + return algo_info[key].length; +} + +const char *keychain_get_description(enum keychain_hash_algo key) +{ + return algo_info[key].desc; +} + +struct keychain_algo_info +keychain_get_hash_algo_info(enum keychain_hash_algo key) +{ + return algo_info[key]; +} + +enum keychain_hash_algo keychain_get_algo_id_by_name(const char *name) +{ +#ifdef CRYPTO_INTERNAL + if (!strncmp(name, "hmac-sha-2", 10)) + return KEYCHAIN_ALGO_HMAC_SHA256; + else if (!strncmp(name, "m", 1)) + return KEYCHAIN_ALGO_MD5; + else + return KEYCHAIN_ALGO_NULL; +#else + if (!strncmp(name, "m", 1)) + return KEYCHAIN_ALGO_MD5; + else if (!strncmp(name, "hmac-sha-1", 10)) + return KEYCHAIN_ALGO_HMAC_SHA1; + else if (!strncmp(name, "hmac-sha-2", 10)) + return KEYCHAIN_ALGO_HMAC_SHA256; + else if (!strncmp(name, "hmac-sha-3", 10)) + return KEYCHAIN_ALGO_HMAC_SHA384; + else if (!strncmp(name, "hmac-sha-5", 10)) + return KEYCHAIN_ALGO_HMAC_SHA512; + else + return KEYCHAIN_ALGO_NULL; +#endif +} + +const char *keychain_get_algo_name_by_id(enum keychain_hash_algo key) +{ + return algo_info[key].name; +} + +DEFUN(cryptographic_algorithm, cryptographic_algorithm_cmd, + "cryptographic-algorithm " + "<md5|hmac-sha-1|hmac-sha-256|hmac-sha-384|hmac-sha-512>", + "Cryptographic-algorithm\n" + "Use MD5 algorithm\n" + "Use HMAC-SHA-1 algorithm\n" + "Use HMAC-SHA-256 algorithm\n" + "Use HMAC-SHA-384 algorithm\n" + "Use HMAC-SHA-512 algorithm\n") +{ + int algo_idx = 1; + uint8_t hash_algo = KEYCHAIN_ALGO_NULL; + + VTY_DECLVAR_CONTEXT_SUB(key, key); + hash_algo = keychain_get_algo_id_by_name(argv[algo_idx]->arg); +#ifndef CRYPTO_OPENSSL + if (hash_algo == KEYCHAIN_ALGO_NULL) { + vty_out(vty, + "Hash algorithm not supported, compile with --with-crypto=openssl\n"); + return CMD_WARNING_CONFIG_FAILED; + } +#endif /* CRYPTO_OPENSSL */ + key->hash_algo = hash_algo; + return CMD_SUCCESS; +} + +DEFUN(no_cryptographic_algorithm, no_cryptographic_algorithm_cmd, + "no cryptographic-algorithm " + "[<md5|hmac-sha-1|hmac-sha-256|hmac-sha-384|hmac-sha-512>]", + NO_STR + "Cryptographic-algorithm\n" + "Use MD5 algorithm\n" + "Use HMAC-SHA-1 algorithm\n" + "Use HMAC-SHA-256 algorithm\n" + "Use HMAC-SHA-384 algorithm\n" + "Use HMAC-SHA-512 algorithm\n") +{ + int algo_idx = 2; + uint8_t hash_algo = KEYCHAIN_ALGO_NULL; + + VTY_DECLVAR_CONTEXT_SUB(key, key); + if (argc > algo_idx) { + hash_algo = keychain_get_algo_id_by_name(argv[algo_idx]->arg); + if (hash_algo == KEYCHAIN_ALGO_NULL) { + vty_out(vty, + "Hash algorithm not supported, try compiling with --with-crypto=openssl\n"); + return CMD_WARNING_CONFIG_FAILED; + } + } + + if ((hash_algo != KEYCHAIN_ALGO_NULL) && (hash_algo != key->hash_algo)) + return CMD_SUCCESS; + + key->hash_algo = KEYCHAIN_ALGO_NULL; + return CMD_SUCCESS; +} + /* Convert HH:MM:SS MON DAY YEAR to time_t value. -1 is returned when given string is malformed. */ static time_t key_str2time(const char *time_str, const char *day_str, @@ -1004,6 +1133,11 @@ static int keychain_config_write(struct vty *vty) if (key->string) vty_out(vty, " key-string %s\n", key->string); + if (key->hash_algo != KEYCHAIN_ALGO_NULL) + vty_out(vty, " cryptographic-algorithm %s\n", + keychain_get_algo_name_by_id( + key->hash_algo)); + if (key->accept.start) { keychain_strftime(buf, BUFSIZ, &key->accept.start); @@ -1051,10 +1185,29 @@ static int keychain_config_write(struct vty *vty) return 0; } + +static void keychain_active_config(vector comps, struct cmd_token *token) +{ + struct keychain *keychain; + struct listnode *node; + + for (ALL_LIST_ELEMENTS_RO(keychain_list, node, keychain)) + vector_set(comps, XSTRDUP(MTYPE_COMPLETION, keychain->name)); +} + +static const struct cmd_variable_handler keychain_var_handlers[] = { + {.varname = "key_chain", .completions = keychain_active_config}, + {.tokenname = "KEYCHAIN_NAME", .completions = keychain_active_config}, + {.tokenname = "KCHAIN_NAME", .completions = keychain_active_config}, + {.completions = NULL} +}; + void keychain_init(void) { keychain_list = list_new(); + /* Register handler for keychain auto config support */ + cmd_variable_handler_register(keychain_var_handlers); install_node(&keychain_node); install_node(&keychain_key_node); @@ -1113,4 +1266,6 @@ void keychain_init(void) install_element(KEYCHAIN_KEY_NODE, &send_lifetime_duration_month_day_cmd); install_element(KEYCHAIN_KEY_NODE, &no_send_lifetime_cmd); + install_element(KEYCHAIN_KEY_NODE, &cryptographic_algorithm_cmd); + install_element(KEYCHAIN_KEY_NODE, &no_cryptographic_algorithm_cmd); } |