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Diffstat (limited to 'src/mint/key_io.c')
| -rw-r--r-- | src/mint/key_io.c | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/src/mint/key_io.c b/src/mint/key_io.c deleted file mode 100644 index 02d888d5d..000000000 --- a/src/mint/key_io.c +++ /dev/null @@ -1,347 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 Christian Grothoff (and other contributing authors) - - TALER is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - TALER is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/> -*/ -/** - * @file mint/key_io.c - * @brief I/O operations for the Mint's private keys - * @author Florian Dold - * @author Benedikt Mueller - * @author Sree Harsha Totakura - * @author Christian Grothoff - */ -#include "platform.h" -#include "key_io.h" - - -/** - * Closure for the #signkeys_iterate_dir_iter(). - */ -struct SignkeysIterateContext -{ - - /** - * Function to call on each signing key. - */ - TALER_MINT_SignkeyIterator it; - - /** - * Closure for @e it. - */ - void *it_cls; -}; - - -/** - * Function called on each file in the directory with - * our signing keys. Parses the file and calls the - * iterator from @a cls. - * - * @param cls the `struct SignkeysIterateContext *` - * @param filename name of the file to parse - * @return #GNUNET_OK to continue, - * #GNUNET_NO to stop iteration without error, - * #GNUNET_SYSERR to stop iteration with error - */ -static int -signkeys_iterate_dir_iter (void *cls, - const char *filename) -{ - struct SignkeysIterateContext *skc = cls; - ssize_t nread; - struct TALER_MintSigningKeyValidityPSPriv issue; - - nread = GNUNET_DISK_fn_read (filename, - &issue, - sizeof (struct TALER_MintSigningKeyValidityPSPriv)); - if (nread != sizeof (struct TALER_MintSigningKeyValidityPSPriv)) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Invalid signkey file `%s': wrong size\n", - filename); - return GNUNET_OK; - } - return skc->it (skc->it_cls, - filename, - &issue); -} - - -/** - * Call @a it for each signing key found in the @a mint_base_dir. - * - * @param mint_base_dir base directory for the mint, - * the signing keys must be in the #DIR_SIGNKEYS - * subdirectory - * @param it function to call on each signing key - * @param it_cls closure for @a it - * @return number of files found (may not match - * number of keys given to @a it as malformed - * files are simply skipped), -1 on error - */ -int -TALER_MINT_signkeys_iterate (const char *mint_base_dir, - TALER_MINT_SignkeyIterator it, - void *it_cls) -{ - char *signkey_dir; - struct SignkeysIterateContext skc; - int ret; - - GNUNET_asprintf (&signkey_dir, - "%s" DIR_SEPARATOR_STR DIR_SIGNKEYS, - mint_base_dir); - skc.it = it; - skc.it_cls = it_cls; - ret = GNUNET_DISK_directory_scan (signkey_dir, - &signkeys_iterate_dir_iter, - &skc); - GNUNET_free (signkey_dir); - return ret; -} - - -/** - * Import a denomination key from the given file. - * - * @param filename the file to import the key from - * @param[OUT] dki set to the imported denomination key - * @return #GNUNET_OK upon success; - * #GNUNET_SYSERR upon failure - */ -int -TALER_MINT_read_denom_key (const char *filename, - struct TALER_DenominationKeyIssueInformation *dki) -{ - uint64_t size; - size_t offset; - void *data; - struct GNUNET_CRYPTO_rsa_PrivateKey *priv; - - if (GNUNET_OK != GNUNET_DISK_file_size (filename, - &size, - GNUNET_YES, - GNUNET_YES)) - { - GNUNET_log (GNUNET_ERROR_TYPE_INFO, - "Skipping inaccessable denomination key file `%s'\n", - filename); - return GNUNET_SYSERR; - } - offset = sizeof (struct TALER_DenominationKeyValidityPS); - if (size <= offset) - { - GNUNET_break (0); - return GNUNET_SYSERR; - } - data = GNUNET_malloc (size); - if (size != - GNUNET_DISK_fn_read (filename, - data, - size)) - { - GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, - "read", - filename); - GNUNET_free (data); - return GNUNET_SYSERR; - } - if (NULL == - (priv = GNUNET_CRYPTO_rsa_private_key_decode (data + offset, - size - offset))) - { - GNUNET_free (data); - return GNUNET_SYSERR; - } - dki->denom_priv.rsa_private_key = priv; - dki->denom_pub.rsa_public_key - = GNUNET_CRYPTO_rsa_private_key_get_public (priv); - memcpy (&dki->issue, - data, - offset); - GNUNET_free (data); - return GNUNET_OK; -} - - -/** - * Exports a denomination key to the given file. - * - * @param filename the file where to write the denomination key - * @param dki the denomination key - * @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure. - */ -int -TALER_MINT_write_denom_key (const char *filename, - const struct TALER_DenominationKeyIssueInformation *dki) -{ - char *priv_enc; - size_t priv_enc_size; - struct GNUNET_DISK_FileHandle *fh; - ssize_t wrote; - size_t wsize; - int ret; - - fh = NULL; - priv_enc_size - = GNUNET_CRYPTO_rsa_private_key_encode (dki->denom_priv.rsa_private_key, - &priv_enc); - ret = GNUNET_SYSERR; - if (NULL == (fh = GNUNET_DISK_file_open - (filename, - GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_CREATE | GNUNET_DISK_OPEN_TRUNCATE, - GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE))) - goto cleanup; - wsize = sizeof (struct TALER_DenominationKeyValidityPS); - if (GNUNET_SYSERR == (wrote = GNUNET_DISK_file_write (fh, - &dki->issue.signature, - wsize))) - goto cleanup; - if (wrote != wsize) - goto cleanup; - if (GNUNET_SYSERR == - (wrote = GNUNET_DISK_file_write (fh, - priv_enc, - priv_enc_size))) - goto cleanup; - if (wrote != priv_enc_size) - goto cleanup; - ret = GNUNET_OK; - cleanup: - GNUNET_free_non_null (priv_enc); - if (NULL != fh) - (void) GNUNET_DISK_file_close (fh); - return ret; -} - - -/** - * Closure for #denomkeys_iterate_keydir_iter() and - * #denomkeys_iterate_topdir_iter(). - */ -struct DenomkeysIterateContext -{ - - /** - * Set to the name of the directory below the top-level directory - * during the call to #denomkeys_iterate_keydir_iter(). - */ - const char *alias; - - /** - * Function to call on each denomination key. - */ - TALER_MINT_DenomkeyIterator it; - - /** - * Closure for @e it. - */ - void *it_cls; -}; - - -/** - * Decode the denomination key in the given file @a filename and call - * the callback in @a cls with the information. - * - * @param cls the `struct DenomkeysIterateContext *` - * @param filename name of a file that should contain - * a denomination key - * @return #GNUNET_OK to continue to iterate - * #GNUNET_NO to abort iteration with success - * #GNUNET_SYSERR to abort iteration with failure - */ -static int -denomkeys_iterate_keydir_iter (void *cls, - const char *filename) -{ - struct DenomkeysIterateContext *dic = cls; - struct TALER_DenominationKeyIssueInformation issue; - - if (GNUNET_OK != - TALER_MINT_read_denom_key (filename, - &issue)) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Invalid denomkey file: '%s'\n", - filename); - return GNUNET_OK; - } - return dic->it (dic->it_cls, - dic->alias, - &issue); -} - - -/** - * Function called on each subdirectory in the #DIR_DENOMKEYS. Will - * call the #denomkeys_iterate_keydir_iter() on each file in the - * subdirectory. - * - * @param cls the `struct DenomkeysIterateContext *` - * @param filename name of the subdirectory to scan - * @return #GNUNET_OK on success, - * #GNUNET_SYSERR if we need to abort - */ -static int -denomkeys_iterate_topdir_iter (void *cls, - const char *filename) -{ - struct DenomkeysIterateContext *dic = cls; - - dic->alias = GNUNET_STRINGS_get_short_name (filename); - if (0 > GNUNET_DISK_directory_scan (filename, - &denomkeys_iterate_keydir_iter, - dic)) - return GNUNET_SYSERR; - return GNUNET_OK; -} - - -/** - * Call @a it for each denomination key found in the @a mint_base_dir. - * - * @param mint_base_dir base directory for the mint, - * the signing keys must be in the #DIR_DENOMKEYS - * subdirectory - * @param it function to call on each denomination key found - * @param it_cls closure for @a it - * @return -1 on error, 0 if no files were found, otherwise - * a positive number (however, even with a positive - * number it is possible that @a it was never called - * as maybe none of the files were well-formed) - */ -int -TALER_MINT_denomkeys_iterate (const char *mint_base_dir, - TALER_MINT_DenomkeyIterator it, - void *it_cls) -{ - char *dir; - struct DenomkeysIterateContext dic; - int ret; - - GNUNET_asprintf (&dir, - "%s" DIR_SEPARATOR_STR DIR_DENOMKEYS, - mint_base_dir); - dic.it = it; - dic.it_cls = it_cls; - ret = GNUNET_DISK_directory_scan (dir, - &denomkeys_iterate_topdir_iter, - &dic); - GNUNET_free (dir); - return ret; -} - - -/* end of key_io.c */ |