diff options
Diffstat (limited to 'src/debug/jdwp/misc/header.c')
-rw-r--r-- | src/debug/jdwp/misc/header.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/src/debug/jdwp/misc/header.c b/src/debug/jdwp/misc/header.c new file mode 100644 index 0000000..ad41c90 --- /dev/null +++ b/src/debug/jdwp/misc/header.c @@ -0,0 +1,172 @@ + +/* OpenIDA - Outil d'analyse de fichiers binaires + * header.c - constitution des deux types d'en-têtes JDWP + * + * Copyright (C) 2010 Cyrille Bagard + * + * This file is part of OpenIDA. + * + * OpenIDA 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. + * + * OpenIDA 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 Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "header.h" + + +#include <string.h> + + +#include "../../../common/endianness.h" + + + +/****************************************************************************** +* * +* Paramètres : header = en-tête logicielle au format local à constituer. * +* blob = en-tête en gros boutiste du paquet à constituer. * +* length = taille totale du paquet. * +* set = jeu de commandes de la requête. * +* command = commande proprement dite. * +* * +* Description : Définit une en-tête de requête au format JDWP. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void set_jdwp_request_header(jdwp_header *header, bin_t *blob, uint32_t length, uint8_t set, uint8_t command) +{ + off_t pos; /* Tête d'écriture */ + + pos = 0; + + length += sizeof(jdwp_header); + + /* Encodage local */ + + header->length = length; + header->id = 1; + header->flags = JDWP_FLAGS_NONE; + + header->set = set; + header->command = command; + + /* Encodage gros boutiste */ + + write_u32(&length, blob, &pos, sizeof(jdwp_header), SRE_BIG); + write_u32((uint32_t []) { 1 }, blob, &pos, sizeof(jdwp_header), SRE_BIG); + write_u8((uint8_t []) { JDWP_FLAGS_NONE }, blob, &pos, sizeof(jdwp_header), SRE_BIG); + + write_u8(&set, blob, &pos, sizeof(jdwp_header), SRE_BIG); + write_u8(&command, blob, &pos, sizeof(jdwp_header), SRE_BIG); + +} + + +/****************************************************************************** +* * +* Paramètres : header = en-tête logicielle au format local à constituer. * +* blob = en-tête en gros boutiste du paquet à constituer. * +* length = taille totale du paquet. * +* lastid = jeton du paquet à l'origine du besoin de réponse. * +* error = éventuelle indication d'erreur. * +* * +* Description : Définit une en-tête de réponse au format JDWP. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void set_jdwp_reply_header(jdwp_header *header, bin_t *blob, uint32_t length, uint32_t lastid, uint16_t error) +{ + off_t pos; /* Tête d'écriture */ + + pos = 0; + + length += sizeof(jdwp_header); + + /* Encodage local */ + + header->length = length; + header->id = 1; + header->flags = JDWP_FLAGS_REPLY; + + header->error = error; + + /* Encodage gros boutiste */ + + write_u32(&length, blob, &pos, sizeof(jdwp_header), SRE_BIG); + write_u32((uint32_t []) { 1 }, blob, &pos, sizeof(jdwp_header), SRE_BIG); + write_u8((uint8_t []) { JDWP_FLAGS_REPLY }, blob, &pos, sizeof(jdwp_header), SRE_BIG); + + write_u16(&error, blob, &pos, sizeof(jdwp_header), SRE_BIG); + +} + + +/****************************************************************************** +* * +* Paramètres : blob = flux de données à analyser. * +* header = en-tête de paquet JDWP reconstituée. [OUT] * +* * +* Description : Lit une en-tête de paquet au format JDWP. * +* * +* Retour : Bilan de l'opération : true en cas de succès, false sinon. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool get_jdwp_header(const bin_t *blob, jdwp_header *header) +{ + off_t pos; /* Tête de lecture */ + off_t len; /* Taille standard d'en-tête */ + + pos = 0; + len = sizeof(jdwp_header); + + if (!read_u32(&header->length, blob, &pos, len, SRE_BIG)) + return false; + + if (!read_u32(&header->id, blob, &pos, len, SRE_BIG)) + return false; + + if (!read_u8(&header->flags, blob, &pos, len, SRE_BIG)) + return false; + + /* Réponse ? */ + if (header->flags & JDWP_FLAGS_REPLY) + { + if (!read_u16(&header->error, blob, &pos, len, SRE_BIG)) + return false; + } + + /* Requête ! */ + else + { + if (!read_u8(&header->set, blob, &pos, len, SRE_BIG)) + return false; + + if (!read_u8(&header->command, blob, &pos, len, SRE_BIG)) + return false; + + } + + return true; + +} |