diff options
Diffstat (limited to 'src/libimcv/imc')
-rw-r--r-- | src/libimcv/imc/imc_agent.c | 170 | ||||
-rw-r--r-- | src/libimcv/imc/imc_agent.h | 8 | ||||
-rw-r--r-- | src/libimcv/imc/imc_state.h | 41 |
3 files changed, 151 insertions, 68 deletions
diff --git a/src/libimcv/imc/imc_agent.c b/src/libimcv/imc/imc_agent.c index de2f959a4..8d1e70716 100644 --- a/src/libimcv/imc/imc_agent.c +++ b/src/libimcv/imc/imc_agent.c @@ -1,5 +1,6 @@ /* - * Copyright (C) 2011 Andreas Steffen, HSR Hochschule fuer Technik Rapperswil + * Copyright (C) 2011-2012 Andreas Steffen + * HSR Hochschule fuer Technik Rapperswil * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -18,7 +19,6 @@ #include <tncif_names.h> #include <debug.h> -#include <utils/linked_list.h> #include <threading/rwlock.h> typedef struct private_imc_agent_t private_imc_agent_t; @@ -333,12 +333,31 @@ static char* get_str_attribute(private_imc_agent_t *this, TNC_ConnectionID id, return NULL; } +/** + * Read an UInt32 attribute + */ +static u_int32_t get_uint_attribute(private_imc_agent_t *this, TNC_ConnectionID id, + TNC_AttributeID attribute_id) +{ + TNC_UInt32 len; + char buf[4]; + + if (this->get_attribute && + this->get_attribute(this->id, id, attribute_id, 4, buf, &len) == + TNC_RESULT_SUCCESS && len == 4) + { + return untoh32(buf); + } + return 0; + } + METHOD(imc_agent_t, create_state, TNC_Result, private_imc_agent_t *this, imc_state_t *state) { TNC_ConnectionID conn_id; char *tnccs_p = NULL, *tnccs_v = NULL, *t_p = NULL, *t_v = NULL; bool has_long = FALSE, has_excl = FALSE, has_soh = FALSE; + u_int32_t max_msg_len; conn_id = state->get_connection_id(state); if (find_connection(this, conn_id)) @@ -357,14 +376,18 @@ METHOD(imc_agent_t, create_state, TNC_Result, tnccs_v = get_str_attribute(this, conn_id, TNC_ATTRIBUTEID_IFTNCCS_VERSION); t_p = get_str_attribute(this, conn_id, TNC_ATTRIBUTEID_IFT_PROTOCOL); t_v = get_str_attribute(this, conn_id, TNC_ATTRIBUTEID_IFT_VERSION); + max_msg_len = get_uint_attribute(this, conn_id, TNC_ATTRIBUTEID_MAX_MESSAGE_SIZE); state->set_flags(state, has_long, has_excl); + state->set_max_msg_len(state, max_msg_len); + + DBG2(DBG_IMC, "IMC %u \"%s\" created a state for %s %s Connection ID %u: " + "%slong %sexcl %ssoh", this->id, this->name, + tnccs_p ? tnccs_p:"?", tnccs_v ? tnccs_v:"?", conn_id, + has_long ? "+":"-", has_excl ? "+":"-", has_soh ? "+":"-"); + DBG2(DBG_IMC, " over %s %s with maximum PA-TNC message size of %u bytes", + t_p ? t_p:"?", t_v ? t_v :"?", max_msg_len); - DBG2(DBG_IMC, "IMC %u \"%s\" created a state for Connection ID %u: " - "%s %s with %slong %sexcl %ssoh over %s %s", - this->id, this->name, conn_id, tnccs_p ? tnccs_p:"?", - tnccs_v ? tnccs_v:"?", has_long ? "+":"-", has_excl ? "+":"-", - has_soh ? "+":"-", t_p ? t_p:"?", t_v ? t_v :"?"); free(tnccs_p); free(tnccs_v); free(t_p); @@ -453,11 +476,17 @@ METHOD(imc_agent_t, get_state, bool, METHOD(imc_agent_t, send_message, TNC_Result, private_imc_agent_t *this, TNC_ConnectionID connection_id, bool excl, - TNC_UInt32 src_imc_id, TNC_UInt32 dst_imv_id, chunk_t msg) + TNC_UInt32 src_imc_id, TNC_UInt32 dst_imv_id, linked_list_t *attr_list) { TNC_MessageType type; TNC_UInt32 msg_flags; + TNC_Result result = TNC_RESULT_FATAL; imc_state_t *state; + pa_tnc_attr_t *attr; + pa_tnc_msg_t *pa_tnc_msg; + chunk_t msg; + enumerator_t *enumerator; + bool attr_added; state = find_connection(this, connection_id); if (!state) @@ -467,26 +496,70 @@ METHOD(imc_agent_t, send_message, TNC_Result, return TNC_RESULT_FATAL; } - if (state->has_long(state) && this->send_message_long) + while (attr_list->get_count(attr_list)) { - if (!src_imc_id) + pa_tnc_msg = pa_tnc_msg_create(state->get_max_msg_len(state)); + attr_added = FALSE; + + enumerator = attr_list->create_enumerator(attr_list); + while (enumerator->enumerate(enumerator, &attr)) { - src_imc_id = this->id; + if (pa_tnc_msg->add_attribute(pa_tnc_msg, attr)) + { + attr_added = TRUE; + } + else + { + if (attr_added) + { + break; + } + else + { + DBG1(DBG_IMC, "PA-TNC attribute too large to send, deleted"); + attr->destroy(attr); + } + } + attr_list->remove_at(attr_list, enumerator); } - msg_flags = excl ? TNC_MESSAGE_FLAGS_EXCLUSIVE : 0; + enumerator->destroy(enumerator); - return this->send_message_long(src_imc_id, connection_id, msg_flags, - msg.ptr, msg.len, this->vendor_id, - this->subtype, dst_imv_id); - } - if (this->send_message) - { - type = (this->vendor_id << 8) | this->subtype; + /* build and send the PA-TNC message via the IF-IMC interface */ + if (!pa_tnc_msg->build(pa_tnc_msg)) + { + pa_tnc_msg->destroy(pa_tnc_msg); + return TNC_RESULT_FATAL; + } + msg = pa_tnc_msg->get_encoding(pa_tnc_msg); + + if (state->has_long(state) && this->send_message_long) + { + if (!src_imc_id) + { + src_imc_id = this->id; + } + msg_flags = excl ? TNC_MESSAGE_FLAGS_EXCLUSIVE : 0; + + result = this->send_message_long(src_imc_id, connection_id, + msg_flags, msg.ptr, msg.len, this->vendor_id, + this->subtype, dst_imv_id); + } + else if (this->send_message) + { + type = (this->vendor_id << 8) | this->subtype; - return this->send_message(this->id, connection_id, msg.ptr, msg.len, - type); + result = this->send_message(this->id, connection_id, msg.ptr, + msg.len, type); + } + + pa_tnc_msg->destroy(pa_tnc_msg); + + if (result != TNC_RESULT_SUCCESS) + { + break; + } } - return TNC_RESULT_FATAL; + return result; } METHOD(imc_agent_t, receive_message, TNC_Result, @@ -494,11 +567,11 @@ METHOD(imc_agent_t, receive_message, TNC_Result, TNC_VendorID msg_vid, TNC_MessageSubtype msg_subtype, TNC_UInt32 src_imv_id, TNC_UInt32 dst_imc_id, pa_tnc_msg_t **pa_tnc_msg) { - pa_tnc_msg_t *pa_msg, *error_msg; + pa_tnc_msg_t *pa_msg; pa_tnc_attr_t *error_attr; + linked_list_t *error_attr_list; enumerator_t *enumerator; - TNC_MessageType msg_type; - TNC_UInt32 msg_flags, src_imc_id, dst_imv_id; + TNC_UInt32 src_imc_id, dst_imv_id; TNC_ConnectionID connection_id; TNC_Result result; @@ -534,51 +607,24 @@ METHOD(imc_agent_t, receive_message, TNC_Result, *pa_tnc_msg = pa_msg; break; case VERIFY_ERROR: - /* build error message */ - error_msg = pa_tnc_msg_create(); + /* extract and copy by refence all error attributes */ + error_attr_list = linked_list_create(); + enumerator = pa_msg->create_error_enumerator(pa_msg); while (enumerator->enumerate(enumerator, &error_attr)) { - error_msg->add_attribute(error_msg, - error_attr->get_ref(error_attr)); + error_attr_list->insert_last(error_attr_list, + error_attr->get_ref(error_attr)); } enumerator->destroy(enumerator); - error_msg->build(error_msg); - - /* send error message */ - if (state->has_long(state) && this->send_message_long) - { - if (state->has_excl(state)) - { - msg_flags = TNC_MESSAGE_FLAGS_EXCLUSIVE; - dst_imv_id = src_imv_id; - } - else - { - msg_flags = 0; - dst_imv_id = TNC_IMVID_ANY; - } - src_imc_id = (dst_imc_id == TNC_IMCID_ANY) ? this->id - : dst_imc_id; - result = this->send_message_long(src_imc_id, connection_id, - msg_flags, msg.ptr, msg.len, msg_vid, - msg_subtype, dst_imv_id); - } - else if (this->send_message) - { - msg_type = (msg_vid << 8) | msg_subtype; + src_imc_id = (dst_imc_id == TNC_IMCID_ANY) ? this->id : dst_imc_id; + dst_imv_id = state->has_excl(state) ? src_imv_id : TNC_IMVID_ANY; - result = this->send_message(this->id, connection_id, - msg.ptr, msg.len, msg_type); - } - else - { - result = TNC_RESULT_FATAL; - } + result = send_message(this, connection_id, state->has_excl(state), + src_imc_id, dst_imv_id, error_attr_list); - /* clean up */ - error_msg->destroy(error_msg); + error_attr_list->destroy(error_attr_list); pa_msg->destroy(pa_msg); return result; case FAILED: diff --git a/src/libimcv/imc/imc_agent.h b/src/libimcv/imc/imc_agent.h index d1fef4d8d..e87450aa6 100644 --- a/src/libimcv/imc/imc_agent.h +++ b/src/libimcv/imc/imc_agent.h @@ -1,5 +1,6 @@ /* - * Copyright (C) 2011 Andreas Steffen, HSR Hochschule fuer Technik Rapperswil + * Copyright (C) 2011-2012 Andreas Steffen + * HSR Hochschule fuer Technik Rapperswil * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -26,6 +27,7 @@ #include <tncifimc.h> #include <pen/pen.h> +#include <utils/linked_list.h> #include <library.h> @@ -104,13 +106,13 @@ struct imc_agent_t { * @param excl exclusive flag * @param src_imc_id IMC ID to be set as source * @param dst_imv_id IMV ID to be set as destination - * @param msg message to send + * @param attr_list list of PA-TNC attributes to send * @return TNC result code */ TNC_Result (*send_message)(imc_agent_t *this, TNC_ConnectionID connection_id, bool excl, TNC_UInt32 src_imc_id, TNC_UInt32 dst_imv_id, - chunk_t msg); + linked_list_t *attr_list); /** * Call when a PA-TNC message was received diff --git a/src/libimcv/imc/imc_state.h b/src/libimcv/imc/imc_state.h index f1b0358c9..c34441f0f 100644 --- a/src/libimcv/imc/imc_state.h +++ b/src/libimcv/imc/imc_state.h @@ -1,5 +1,6 @@ /* - * Copyright (C) 2011 Andreas Steffen, HSR Hochschule fuer Technik Rapperswil + * Copyright (C) 2011-2012 Andreas Steffen + * HSR Hochschule fuer Technik Rapperswil * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -22,6 +23,8 @@ #define IMC_STATE_H_ #include <tncif.h> +#include <tncifimv.h> +#include <tncifimc.h> #include <library.h> @@ -33,8 +36,7 @@ typedef struct imc_state_t imc_state_t; struct imc_state_t { /** - * Get the TNCS connection I -D attached to the state + * Get the TNCS connection ID attached to the state * * @return TNCS connection ID of the state */ @@ -64,6 +66,20 @@ D attached to the state void (*set_flags)(imc_state_t *this, bool has_long, bool has_excl); /** + * Set the maximum size of a PA-TNC message for this TNCCS connection + * + * @max_msg_len maximum size of a PA-TNC message + */ + void (*set_max_msg_len)(imc_state_t *this, u_int32_t max_msg_len); + + /** + * Get the maximum size of a PA-TNC message for this TNCCS connection + * + * @return maximum size of a PA-TNC message + */ + u_int32_t (*get_max_msg_len)(imc_state_t *this); + + /** * Change the connection state * * @param new_state new connection state @@ -71,6 +87,25 @@ D attached to the state void (*change_state)(imc_state_t *this, TNC_ConnectionState new_state); /** + * Set the Assessment/Evaluation Result + * + * @param id IMC ID + * @param result Assessment/Evaluation Result + */ + void (*set_result)(imc_state_t *this, TNC_IMCID id, + TNC_IMV_Evaluation_Result result); + + /** + * Get the Assessment/Evaluation Result + * + * @param id IMC ID + * @param result Assessment/Evaluation Result + * @return TRUE if result is known + */ + bool (*get_result)(imc_state_t *this, TNC_IMCID id, + TNC_IMV_Evaluation_Result *result); + + /** * Destroys an imc_state_t object */ void (*destroy)(imc_state_t *this); |