diff options
Diffstat (limited to 'src/exchangedb/exchangedb_auditorkeys.c')
| -rw-r--r-- | src/exchangedb/exchangedb_auditorkeys.c | 344 |
1 files changed, 0 insertions, 344 deletions
diff --git a/src/exchangedb/exchangedb_auditorkeys.c b/src/exchangedb/exchangedb_auditorkeys.c deleted file mode 100644 index 0a0370cfe..000000000 --- a/src/exchangedb/exchangedb_auditorkeys.c +++ /dev/null @@ -1,344 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014--2019 Taler Systems SA - - 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, see <http://www.gnu.org/licenses/> -*/ -/** - * @file exchangedb/exchangedb_auditorkeys.c - * @brief I/O operations for the Exchange's auditor data - * @author Florian Dold - * @author Benedikt Mueller - * @author Sree Harsha Totakura - * @author Christian Grothoff - */ -#include "platform.h" -#include "taler_exchangedb_lib.h" - - -/** - * Closure for #auditor_iter() and - */ -struct AuditorIterateContext -{ - - /** - * Function to call with the information for each auditor. - */ - TALER_EXCHANGEDB_AuditorIterator it; - - /** - * Closure for @e it. - */ - void *it_cls; - - /** - * Status of the iteration. - */ - int status; -}; - - -GNUNET_NETWORK_STRUCT_BEGIN - -/** - * Header of a file with auditing information. - */ -struct AuditorFileHeaderP -{ - - /** - * Public key of the auditor. - */ - struct TALER_AuditorPublicKeyP apub; - - /** - * Master public key of the exchange the auditor is signing - * information for. - */ - struct TALER_MasterPublicKeyP mpub; - - /** - * Number of signatures and DKI entries in this file. - */ - uint32_t dki_len; - -}; -GNUNET_NETWORK_STRUCT_END - - -/** - * Load the auditor signature and the information signed by the - * auditor and call the callback in @a cls with the information. - * - * @param cls the `struct AuditorIterateContext *` - * @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 -auditor_iter (void *cls, - const char *filename) -{ - struct AuditorIterateContext *aic = cls; - uint64_t size; - struct AuditorFileHeaderP *af; - const struct TALER_AuditorSignatureP *sigs; - const struct TALER_DenominationKeyValidityPS *dki; - const char *auditor_url; - uint32_t dki_len; - size_t url_len; - int iret; - - if (GNUNET_OK != - GNUNET_DISK_file_size (filename, - &size, - GNUNET_YES, - GNUNET_YES)) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Skipping inaccessible auditor information file `%s'\n", - filename); - return GNUNET_OK; - } - if (size < sizeof (struct AuditorFileHeaderP)) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "File size (%llu bytes) too small for file `%s' to contain auditor data. Skipping it.\n", - (unsigned long long) size, - filename); - return GNUNET_OK; - } - if (size >= GNUNET_MAX_MALLOC_CHECKED) - { - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "File size (%llu bytes) too large for file `%s' to contain auditor data. Skipping it.\n", - (unsigned long long) size, - filename); - return GNUNET_OK; - } - af = GNUNET_malloc (size); - if (((ssize_t) size) != - GNUNET_DISK_fn_read (filename, - af, - size)) - { - GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, - "read", - filename); - GNUNET_free (af); - return GNUNET_OK; - } - dki_len = ntohl (af->dki_len); - if (0 == dki_len) - { - GNUNET_break_op (0); - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "No signed keys in %s\n", - filename); - GNUNET_free (af); - return GNUNET_OK; - } - size -= sizeof (struct AuditorFileHeaderP); - if ( (size / dki_len) < - (sizeof (struct TALER_DenominationKeyValidityPS) - + sizeof (struct TALER_AuditorSignatureP)) ) - { - GNUNET_break_op (0); - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Malformed auditor data file %s (file too short for %u keys)\n", - filename, - (unsigned int) dki_len); - GNUNET_free (af); - return GNUNET_OK; - } - url_len = size - dki_len * (sizeof (struct TALER_DenominationKeyValidityPS) - + sizeof (struct TALER_AuditorSignatureP)); - sigs = (const struct TALER_AuditorSignatureP *) &af[1]; - dki = (const struct TALER_DenominationKeyValidityPS *) &sigs[dki_len]; - auditor_url = (const char *) &dki[dki_len]; - if ( (0 == url_len) || - ('\0' != auditor_url[url_len - 1]) ) - { - GNUNET_break_op (0); - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Malformed auditor data file %s (no 0-terminator)\n", - filename); - GNUNET_free (af); - return GNUNET_OK; - } - if (GNUNET_OK != - (iret = aic->it (aic->it_cls, - &af->apub, - auditor_url, - &af->mpub, - dki_len, - sigs, - dki))) - { - GNUNET_free (af); - if (GNUNET_SYSERR == iret) - aic->status = GNUNET_SYSERR; - return GNUNET_SYSERR; - } - aic->status++; - GNUNET_free (af); - return GNUNET_OK; -} - - -/** - * Call @a it with information for each auditor found in the @a exchange_base_dir. - * - * @param cfg configuration to use - * @param it function to call with auditor information - * @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_EXCHANGEDB_auditor_iterate (const struct GNUNET_CONFIGURATION_Handle *cfg, - TALER_EXCHANGEDB_AuditorIterator it, - void *it_cls) -{ - struct AuditorIterateContext aic; - int ret; - char *auditor_base_dir; - - if (GNUNET_OK != - GNUNET_CONFIGURATION_get_value_filename (cfg, - "exchangedb", - "AUDITOR_BASE_DIR", - &auditor_base_dir)) - return -1; - aic.it = it; - aic.it_cls = it_cls; - aic.status = 0; - ret = GNUNET_DISK_directory_scan (auditor_base_dir, - &auditor_iter, - &aic); - GNUNET_free (auditor_base_dir); - if ( (0 != aic.status) || - (GNUNET_OK == ret) ) - return aic.status; - return ret; -} - - -/** - * Write auditor information to the given file. - * - * @param filename the file where to write the auditor information to - * @param apub the auditor's public key - * @param auditor_url the URL of the auditor - * @param asigs the auditor's signatures, array of length @a dki_len - * @param mpub the exchange's public key (as expected by the auditor) - * @param dki_len length of @a dki - * @param dki array of denomination coin data signed by the auditor - * @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure. - */ -int -TALER_EXCHANGEDB_auditor_write ( - const char *filename, - const struct TALER_AuditorPublicKeyP *apub, - const char *auditor_url, - const struct TALER_AuditorSignatureP *asigs, - const struct TALER_MasterPublicKeyP *mpub, - uint32_t dki_len, - const struct TALER_DenominationKeyValidityPS *dki) -{ - struct GNUNET_DISK_FileHandle *fh; - ssize_t wrote; - size_t wsize; - int eno; - - if (GNUNET_OK != - GNUNET_DISK_directory_create_for_file (filename)) - { - eno = errno; - GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, - "mkdir (for file)", - filename); - errno = eno; - return 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))) - { - eno = errno; - GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, - "open", - filename); - errno = eno; - return GNUNET_SYSERR; - } - { - struct AuditorFileHeaderP af = { - .apub = *apub, - .mpub = *mpub, - .dki_len = htonl (dki_len) - }; - - wsize = sizeof (struct AuditorFileHeaderP); - if ( (GNUNET_SYSERR == (wrote = GNUNET_DISK_file_write (fh, - &af, - wsize))) || - (wrote != (ssize_t) wsize) ) - goto cleanup; - } - wsize = dki_len * sizeof (struct TALER_AuditorSignatureP); - if (((ssize_t) wsize) != - GNUNET_DISK_file_write (fh, - asigs, - wsize)) - goto cleanup; - wsize = dki_len * sizeof (struct TALER_DenominationKeyValidityPS); - if (((ssize_t) wsize) != - GNUNET_DISK_file_write (fh, - dki, - wsize)) - goto cleanup; - wsize = strlen (auditor_url) + 1; - if (((ssize_t) wsize) != - GNUNET_DISK_file_write (fh, - auditor_url, - wsize)) - goto cleanup; - GNUNET_assert (GNUNET_OK == - GNUNET_DISK_file_close (fh)); - return GNUNET_OK; -cleanup: - eno = errno; - GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, - "write", - filename); - GNUNET_break (GNUNET_OK == - GNUNET_DISK_file_close (fh)); - /* try to remove the file, as it must be malformed */ - if (0 != unlink (filename)) - GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, - "unlink", - filename); - errno = eno; - return GNUNET_SYSERR; -} - - -/* end of exchangedb_auditorkeys.c */ |