diff options
author | Cyrille Bagard <nocbos@gmail.com> | 2019-10-12 16:21:03 (GMT) |
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committer | Cyrille Bagard <nocbos@gmail.com> | 2019-10-12 16:25:05 (GMT) |
commit | 986125d4c2d8b049017b6d0770f16b9058076165 (patch) | |
tree | c89e6b7967a731e68d72f6d5a2150b0347db4ef3 /src/analysis/db/misc | |
parent | 96afc0325e1c85bf1a76d63c6441cf8f044708fe (diff) |
Defined a new type dedicated to snapshot identifiers.
Diffstat (limited to 'src/analysis/db/misc')
-rw-r--r-- | src/analysis/db/misc/Makefile.am | 1 | ||||
-rw-r--r-- | src/analysis/db/misc/snapshot.c | 217 | ||||
-rw-r--r-- | src/analysis/db/misc/snapshot.h | 82 | ||||
-rw-r--r-- | src/analysis/db/misc/timestamp.c | 4 |
4 files changed, 302 insertions, 2 deletions
diff --git a/src/analysis/db/misc/Makefile.am b/src/analysis/db/misc/Makefile.am index ebe92e1..c702145 100644 --- a/src/analysis/db/misc/Makefile.am +++ b/src/analysis/db/misc/Makefile.am @@ -3,6 +3,7 @@ noinst_LTLIBRARIES = libanalysisdbmisc.la libanalysisdbmisc_la_SOURCES = \ rlestr.h rlestr.c \ + snapshot.h snapshot.c \ timestamp.h timestamp.c libanalysisdbmisc_la_LIBADD = diff --git a/src/analysis/db/misc/snapshot.c b/src/analysis/db/misc/snapshot.c new file mode 100644 index 0000000..982553b --- /dev/null +++ b/src/analysis/db/misc/snapshot.c @@ -0,0 +1,217 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * snapshot.c - encodage des informations utiles aux instantanés + * + * Copyright (C) 2019 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide 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 of the License, or + * (at your option) any later version. + * + * Chrysalide 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 Chrysalide. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "snapshot.h" + + +#include <string.h> +#include <openssl/rand.h> + + +#include "../../../core/logs.h" + + + +/* ---------------------------------------------------------------------------------- */ +/* IDENTIFIANTS DES INSTANTANES */ +/* ---------------------------------------------------------------------------------- */ + + +/****************************************************************************** +* * +* Paramètres : id = identifiant d'instantané à initialiser. [OUT] * +* * +* Description : Construit un identifiant pour instantané de base de données. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool init_snapshot_id(snapshot_id_t *id) +{ + bool result; /* Bilan à retourner */ + int ret; /* Bilan d'une génération */ + unsigned char rand[SNAP_ID_RAND_SZ]; /* Tirage aléatoire */ + size_t i; /* Boucle de parcours */ + + static char *alphabet = "0123456789abcdef"; + + ret = RAND_bytes(rand, SNAP_ID_RAND_SZ); + + if (ret != 1) + { + LOG_ERROR_OPENSSL; + result = false; + } + + else + { + for (i = 0; i < SNAP_ID_RAND_SZ; i++) + { + id->name[i * 2 + 0] = alphabet[rand[i] & 0xf]; + id->name[i * 2 + 1] = alphabet[(rand[i] >> 4) & 0xf]; + } + + id->name[i * 2] = '\0'; + + result = true; + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : id = identifiant d'instantané à initialiser. [OUT] * +* text = source de données pour la constitution. * +* * +* Description : Construit un identifiant pour instantané de base de données. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool init_snapshot_id_from_text(snapshot_id_t *id, const char *text) +{ + bool result; /* Bilan à retourner */ + + result = (strlen(text) == (SNAP_ID_HEX_SZ - 1)); + + if (result) + strcpy(id->name, text); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : dest = destination de la copie d'indentifiant. [OUT] * +* src = source de l'identifiant à copier. * +* * +* Description : Effectue une copie d'identifiant d'instantané. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void copy_snapshot_id(snapshot_id_t *dest, const snapshot_id_t *src) +{ + memcpy(dest->name, src->name, SNAP_ID_HEX_SZ); + +} + + +/****************************************************************************** +* * +* Paramètres : id1 = premier identifiant à comparer. * +* id2 = second identifiant à comparer. * +* * +* Description : Effectue la comparaison entre deux identifiants. * +* * +* Retour : Résultat de la comparaison : -1, 0 ou 1. * +* * +* Remarques : - * +* * +******************************************************************************/ + +int cmp_snapshot_id(const snapshot_id_t *id1, const snapshot_id_t *id2) +{ + int result; /* Bilan à retourner */ + + result = memcmp(id1->name, id2->name, SNAP_ID_HEX_SZ); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : id = informations à constituer. [OUT] * +* pbuf = paquet de données où venir puiser les infos. * +* * +* Description : Importe la définition d'un identifiant d'instantané. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool unpack_snapshot_id(snapshot_id_t *id, packed_buffer *pbuf) +{ + bool result; /* Bilan à retourner */ + + result = extract_packed_buffer(pbuf, id->name, SNAP_ID_HEX_SZ, false); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : id = informations à sauvegarer. * +* pbuf = paquet de données où venir inscrire les infos. * +* * +* Description : Exporte la définition d'un identifiant d'instantané. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool pack_snapshot_id(const snapshot_id_t *id, packed_buffer *pbuf) +{ + bool result; /* Bilan à retourner */ + + result = extend_packed_buffer(pbuf, id->name, SNAP_ID_HEX_SZ, false); + + return result; + +} + + + +/* ---------------------------------------------------------------------------------- */ +/* PROPRIETES DES INSTANTANES */ +/* ---------------------------------------------------------------------------------- */ + + + + + + + diff --git a/src/analysis/db/misc/snapshot.h b/src/analysis/db/misc/snapshot.h new file mode 100644 index 0000000..4aaa6f9 --- /dev/null +++ b/src/analysis/db/misc/snapshot.h @@ -0,0 +1,82 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * snapshot.h - prototypes pour l'encodage des informations utiles aux instantanés + * + * Copyright (C) 2019 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide 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 of the License, or + * (at your option) any later version. + * + * Chrysalide 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 Chrysalide. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _ANALYSIS_DB_MISC_SNAPSHOT_H +#define _ANALYSIS_DB_MISC_SNAPSHOT_H + + +#include <stdbool.h> +#include <stdint.h> + + +#include "../../../common/packed.h" + + + +/* -------------------------- IDENTIFIANTS DES INSTANTANES -------------------------- */ + + +#define SNAP_ID_RAND_SZ 32 +#define SNAP_ID_HEX_SZ (SNAP_ID_RAND_SZ * 2 + 1) + +/* Représentation d'un instantané */ +typedef struct _snapshot_id_t +{ + char name[SNAP_ID_HEX_SZ]; + +} snapshot_id_t; + + +/* Construit un identifiant pour instantané de base de données. */ +bool init_snapshot_id(snapshot_id_t *); + +/* Construit un identifiant pour instantané de base de données. */ +bool init_snapshot_id_from_text(snapshot_id_t *, const char *); + +#define snapshot_id_as_string(id) (id)->name + +/* Effectue une copie d'identifiant d'instantané. */ +void copy_snapshot_id(snapshot_id_t *, const snapshot_id_t *); + +/* Effectue la comparaison entre deux identifiants. */ +int cmp_snapshot_id(const snapshot_id_t *, const snapshot_id_t *); + +/* Importe la définition d'un identifiant d'instantané. */ +bool unpack_snapshot_id(snapshot_id_t *, packed_buffer *); + +/* Exporte la définition d'un identifiant d'instantané. */ +bool pack_snapshot_id(const snapshot_id_t *, packed_buffer *); + + + +/* --------------------------- PROPRIETES DES INSTANTANES --------------------------- */ + + + + + + + + + +#endif /* _ANALYSIS_DB_MISC_SNAPSHOT_H */ diff --git a/src/analysis/db/misc/timestamp.c b/src/analysis/db/misc/timestamp.c index 6453953..12299eb 100644 --- a/src/analysis/db/misc/timestamp.c +++ b/src/analysis/db/misc/timestamp.c @@ -79,8 +79,8 @@ bool timestamp_is_younger(timestamp_t stamp, timestamp_t limit) /****************************************************************************** * * -* Paramètres : t1 = première chaîne à comparer. * -* t2 = seconde chaîne à comparer. * +* Paramètres : t1 = premier horodatage à comparer. * +* t2 = second horodatage à comparer. * * * * Description : Effectue la comparaison entre deux horodatages. * * * |