fixing minor memory leak, improving documentation
This commit is contained in:
Christian Grothoff
parent
ca8612b6db
commit
af79e61f4d
@ -13,7 +13,6 @@
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* @file mint/key_io.c
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* @brief I/O operations for the Mint's private keys
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@ -23,36 +22,40 @@
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* @author Christian Grothoff
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*
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* TODO:
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* - document better
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* - revisit IO with respect to variable-size RSA keys!
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*/
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#include "platform.h"
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#include "key_io.h"
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/**
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*
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* Closure for the #signkeys_iterate_dir_iter().
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*/
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struct SignkeysIterateContext
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{
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/**
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*
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* Function to call on each signing key.
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*/
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TALER_MINT_SignkeyIterator it;
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/**
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*
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* Closure for @e it.
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*/
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void *it_cls;
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};
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/**
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* Function called on each file in the directory with
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* our signing keys. Parses the file and calls the
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* iterator from @a cls.
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*
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*
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* @param cls
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* @param filename
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* @return
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* @param cls the `struct SignkeysIterateContext *`
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* @param filename name of the file to parse
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* @return #GNUNET_OK to continue,
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* #GNUNET_NO to stop iteration without error,
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* #GNUNET_SYSERR to stop iteration with error
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*/
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static int
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signkeys_iterate_dir_iter (void *cls,
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@ -78,6 +81,18 @@ signkeys_iterate_dir_iter (void *cls,
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}
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/**
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* Call @a it for each signing key found in the @a mint_base_dir.
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*
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* @param mint_base_dir base directory for the mint,
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* the signing keys must be in the #DIR_SIGNKEYS
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* subdirectory
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* @param it function to call on each signing key
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* @param it_cls closure for @a it
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* @return number of files found (may not match
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* number of keys given to @a it as malformed
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* files are simply skipped), -1 on error
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*/
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int
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TALER_MINT_signkeys_iterate (const char *mint_base_dir,
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TALER_MINT_SignkeyIterator it,
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@ -101,10 +116,10 @@ TALER_MINT_signkeys_iterate (const char *mint_base_dir,
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/**
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* Import a denomination key from the given file
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* Import a denomination key from the given file.
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*
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* @param filename the file to import the key from
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* @param dki pointer to return the imported denomination key
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* @param[OUT] dki set to the imported denomination key
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* @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure
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*/
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int
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@ -203,34 +218,40 @@ TALER_MINT_write_denom_key (const char *filename,
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/**
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*
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* Closure for #denomkeys_iterate_keydir_iter() and
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* #denomkeys_iterate_topdir_iter().
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*/
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struct DenomkeysIterateContext
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{
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/**
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*
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* Set to the name of the directory below the top-level directory
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* during the call to #denomkeys_iterate_keydir_iter().
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*/
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const char *alias;
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/**
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*
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* Function to call on each denomination key.
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*/
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TALER_MINT_DenomkeyIterator it;
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/**
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*
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* Closure for @e it.
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*/
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void *it_cls;
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};
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/**
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* Decode the denomination key in the given file @a filename and call
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* the callback in @a cls with the information.
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*
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*
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* @param cls
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* @param filename
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* @return
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* @param cls the `struct DenomkeysIterateContext *`
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* @param filename name of a file that should contain
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* a denomination key
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* @return #GNUNET_OK to continue to iterate
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* #GNUNET_NO to abort iteration with success
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* #GNUNET_SYSERR to abort iteration with failure
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*/
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static int
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denomkeys_iterate_keydir_iter (void *cls,
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@ -255,11 +276,14 @@ denomkeys_iterate_keydir_iter (void *cls,
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/**
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* Function called on each subdirectory in the #DIR_DENOMKEYS. Will
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* call the #denomkeys_iterate_keydir_iter() on each file in the
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* subdirectory.
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*
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*
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* @param cls
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* @param filename
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* @return
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* @param cls the `struct DenomkeysIterateContext *`
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* @param filename name of the subdirectory to scan
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* @return #GNUNET_OK on success,
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* #GNUNET_SYSERR if we need to abort
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*/
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static int
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denomkeys_iterate_topdir_iter (void *cls,
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@ -268,8 +292,6 @@ denomkeys_iterate_topdir_iter (void *cls,
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struct DenomkeysIterateContext *dic = cls;
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dic->alias = GNUNET_STRINGS_get_short_name (filename);
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// FIXME: differentiate between error case and normal iteration abortion
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if (0 > GNUNET_DISK_directory_scan (filename,
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&denomkeys_iterate_keydir_iter,
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dic))
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@ -278,6 +300,19 @@ denomkeys_iterate_topdir_iter (void *cls,
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}
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/**
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* Call @a it for each denomination key found in the @a mint_base_dir.
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*
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* @param mint_base_dir base directory for the mint,
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* the signing keys must be in the #DIR_DENOMKEYS
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* subdirectory
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* @param it function to call on each denomination key found
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* @param it_cls closure for @a it
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* @return -1 on error, 0 if no files were found, otherwise
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* a positive number (however, even with a positive
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* number it is possible that @a it was never called
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* as maybe none of the files were well-formed)
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*/
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int
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TALER_MINT_denomkeys_iterate (const char *mint_base_dir,
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TALER_MINT_DenomkeyIterator it,
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@ -286,19 +321,18 @@ TALER_MINT_denomkeys_iterate (const char *mint_base_dir,
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char *dir;
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size_t len;
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struct DenomkeysIterateContext dic;
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int ret;
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len = GNUNET_asprintf (&dir,
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"%s" DIR_SEPARATOR_STR DIR_DENOMKEYS,
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mint_base_dir);
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GNUNET_assert (len > 0);
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GNUNET_asprintf (&dir,
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"%s" DIR_SEPARATOR_STR DIR_DENOMKEYS,
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mint_base_dir);
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dic.it = it;
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dic.it_cls = it_cls;
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// scan over alias dirs
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return GNUNET_DISK_directory_scan (dir,
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&denomkeys_iterate_topdir_iter,
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&dic);
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ret = GNUNET_DISK_directory_scan (dir,
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&denomkeys_iterate_topdir_iter,
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&dic);
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GNUNET_free (dir);
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return ret;
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}
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@ -19,9 +19,6 @@
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* @author Florian Dold
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* @author Benedikt Mueller
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* @author Christian Grothoff
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*
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* TODO:
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* - document better
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*/
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#ifndef KEY_IO_H
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#define KEY_IO_H
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@ -30,59 +27,64 @@
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#include "taler_signatures.h"
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/**
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*
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* Subdirectroy under the mint's base directory which contains
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* the mint's signing keys.
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*/
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#define DIR_SIGNKEYS "signkeys"
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/**
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*
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* Subdirectory under the mint's base directory which contains
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* the mint's denomination keys.
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*/
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#define DIR_DENOMKEYS "denomkeys"
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/**
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* On disk format used for a mint signing key.
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* Includes the private key followed by the signed
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* issue message.
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* On disk format used for a mint signing key. Signing keys are used
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* by the mint to affirm its messages, but not to create coins.
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* Includes the private key followed by the public information about
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* the signing key.
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*/
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struct TALER_MINT_SignKeyIssuePriv
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{
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/**
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* FIXME.
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* Private key part of the mint's signing key.
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*/
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struct GNUNET_CRYPTO_EddsaPrivateKey signkey_priv;
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/**
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* FIXME.
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* Public information about a mint signing key.
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*/
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struct TALER_MINT_SignKeyIssue issue;
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};
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/**
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* FIXME.
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* All information about a denomination key (which is used to
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* sign coins into existence).
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*/
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struct TALER_MINT_DenomKeyIssuePriv
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{
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/**
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* The private key of the denomination. Will be NULL if the private key is
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* not available.
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* The private key of the denomination. Will be NULL if the private
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* key is not available (this is the case after the key has expired
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* for signing coins, but is still valid for depositing coins).
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*/
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struct GNUNET_CRYPTO_rsa_PrivateKey *denom_priv;
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/**
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* FIXME.
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* Public information about a denomination key.
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*/
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struct TALER_MINT_DenomKeyIssue issue;
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};
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/**
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* Iterator for sign keys.
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* Iterator over signing keys.
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*
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* @param cls closure
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* @param filename name of the file the key came from
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* @param ski the sign key issue
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* @param ski the sign key
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* @return #GNUNET_OK to continue to iterate,
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* #GNUNET_NO to stop iteration with no error,
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* #GNUNET_SYSERR to abort iteration with error!
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@ -94,10 +96,10 @@ typedef int
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/**
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* Iterator for denomination keys.
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* Iterator over denomination keys.
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*
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* @param cls closure
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* @param dki the denomination key issue
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* @param dki the denomination key
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* @param alias coin alias
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* @return #GNUNET_OK to continue to iterate,
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* #GNUNET_NO to stop iteration with no error,
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@ -111,12 +113,16 @@ typedef int
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/**
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* FIXME
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* Call @a it for each signing key found in the @a mint_base_dir.
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*
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* @param mint_base_dir
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* @param it
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* @param mint_base_dir base directory for the mint,
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* the signing keys must be in the #DIR_SIGNKEYS
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* subdirectory
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* @param it function to call on each signing key
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* @param it_cls closure for @a it
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* @return
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* @return number of files found (may not match
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* number of keys given to @a it as malformed
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* files are simply skipped), -1 on error
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*/
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int
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TALER_MINT_signkeys_iterate (const char *mint_base_dir,
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@ -125,12 +131,17 @@ TALER_MINT_signkeys_iterate (const char *mint_base_dir,
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/**
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* FIXME
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* Call @a it for each denomination key found in the @a mint_base_dir.
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*
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* @param mint_base_dir
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* @param it
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* @param mint_base_dir base directory for the mint,
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* the signing keys must be in the #DIR_DENOMKEYS
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* subdirectory
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* @param it function to call on each denomination key found
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* @param it_cls closure for @a it
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* @return
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* @return -1 on error, 0 if no files were found, otherwise
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* a positive number (however, even with a positive
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* number it is possible that @a it was never called
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* as maybe none of the files were well-formed)
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*/
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int
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TALER_MINT_denomkeys_iterate (const char *mint_base_dir,
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@ -139,7 +150,7 @@ TALER_MINT_denomkeys_iterate (const char *mint_base_dir,
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/**
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* Exports a denomination key to the given file
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* Exports a denomination key to the given file.
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*
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* @param filename the file where to write the denomination key
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* @param dki the denomination key
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@ -151,10 +162,10 @@ TALER_MINT_write_denom_key (const char *filename,
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/**
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* Import a denomination key from the given file
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* Import a denomination key from the given file.
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*
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* @param filename the file to import the key from
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* @param dki pointer to return the imported denomination key
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* @param[OUT] dki set to the imported denomination key
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* @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure
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*/
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int
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