diff options
author | lroland <lroland@f5534014-38df-0310-8fa8-9805f1628bb7> | 2005-04-26 23:14:35 +0000 |
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committer | lroland <lroland@f5534014-38df-0310-8fa8-9805f1628bb7> | 2005-04-26 23:14:35 +0000 |
commit | 69bb58f4a13ae48d6dc9be2744f97cb8f13498d6 (patch) | |
tree | 8d9aa36b75b14fcde48878e7ee6c101195cf5a4f /plugins/mgcp | |
parent | 5351e925f5b0a5ce214b6303bd7bd25ad4c3e56d (diff) |
Reindent the mgcp dissector with tabs and
remove trailing white spaces.
git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@14195 f5534014-38df-0310-8fa8-9805f1628bb7
Diffstat (limited to 'plugins/mgcp')
-rw-r--r-- | plugins/mgcp/packet-mgcp.c | 2668 | ||||
-rw-r--r-- | plugins/mgcp/packet-mgcp.h | 44 |
2 files changed, 1355 insertions, 1357 deletions
diff --git a/plugins/mgcp/packet-mgcp.c b/plugins/mgcp/packet-mgcp.c index 475dbac143..fbadf3f106 100644 --- a/plugins/mgcp/packet-mgcp.c +++ b/plugins/mgcp/packet-mgcp.c @@ -4,8 +4,8 @@ * RFC 3435 (obsoletes 2705): Media Gateway Control Protocol (MGCP) Version 1.0 * RFC 3660: Basic MGCP Packages * RFC 3661: MGCP Return Code Usage - * NCS 1.0: PacketCable Network-Based Call Signaling Protocol Specification, - * PKT-SP-EC-MGCP-I09-040113, January 13, 2004, Cable Television + * NCS 1.0: PacketCable Network-Based Call Signaling Protocol Specification, + * PKT-SP-EC-MGCP-I09-040113, January 13, 2004, Cable Television * Laboratories, Inc., http://www.PacketCable.com/ * * $Id$ @@ -123,76 +123,76 @@ static int hf_mgcp_req_dup = -1; static int hf_mgcp_rsp_dup = -1; static const value_string mgcp_return_code_vals[] = { - {100, "The transaction is currently being executed. An actual completion message will follow on later."}, - {101, "The transaction has been queued for execution. An actual completion message will follow later."}, - {200, "The requested transaction was executed normally."}, - {250, "The connection was deleted."}, - {400, "The transaction could not be executed, due to a transient error."}, - {401, "The phone is already off hook"}, - {402, "The phone is already on hook"}, - {403, "The transaction could not be executed, because the endpoint does not have sufficient resources at this time"}, - {404, "Insufficient bandwidth at this time"}, - {405, "The transaction could not be executed, because the endpoint is \"restarting\"."}, - {406, "Transaction time-out. The transaction did not complete in a reasonable period of time and has been aborted."}, - {407, "Transaction aborted. The transaction was aborted by some external action, e.g., a ModifyConnection command aborted by a DeleteConnection command."}, - {409, "The transaction could not be executed because of internal overload."}, - {410, "No endpoint available. A valid \"any of\" wildcard was used, however there was no endpoint available to satisfy the request."}, - {500, "The transaction could not be executed, because the endpoint is unknown."}, - {501, "The transaction could not be executed, because the endpoint is not ready."}, - {502, "The transaction could not be executed, because the endpoint does not have sufficient resources"}, - {503, "\"All of\" wildcard too complicated."}, - {504, "Unknown or unsupported command."}, - {505, "Unsupported RemoteConnectionDescriptor."}, - {506, "Unable to satisfy both LocalConnectionOptions and RemoteConnectionDescriptor."}, - {507, "Unsupported functionality."}, - {508, "Unknown or unsupported quarantine handling."}, - {509, "Error in RemoteConnectionDescriptor."}, - {510, "The transaction could not be executed, because a protocol error was detected."}, - {511, "The transaction could not be executed, because the command contained an unrecognized extension."}, - {512, "The transaction could not be executed, because the gateway is not equipped to detect one of the requested events."}, - {513, "The transaction could not be executed, because the gateway is not equipped to generate one of the requested signals."}, - {514, "The transaction could not be executed, because the gateway cannot send the specified announcement."}, - {515, "The transaction refers to an incorrect connection-id (may have been already deleted)"}, - {516, "The transaction refers to an unknown call-id."}, - {517, "Unsupported or invalid mode."}, - {518, "Unsupported or unknown package."}, - {519, "Endpoint does not have a digit map."}, - {520, "The transaction could not be executed, because the endpoint is 'restarting'."}, - {521, "Endpoint redirected to another Call Agent."}, - {522, "No such event or signal."}, - {523, "Unknown action or illegal combination of actions"}, - {524, "Internal inconsistency in LocalConnectionOptions"}, - {525, "Unknown extension in LocalConnectionOptions"}, - {526, "Insufficient bandwidth"}, - {527, "Missing RemoteConnectionDescriptor"}, - {528, "Incompatible protocol version"}, - {529, "Internal hardware failure"}, - {530, "CAS signaling protocol error."}, - {531, "failure of a grouping of trunks (e.g. facility failure)."}, - {532, "Unsupported value(s) in LocalConnectionOptions."}, - {533, "Response too large."}, - {534, "Codec negotiation failure."}, - {535, "Packetization period not supported"}, - {536, "Unknown or unsupported RestartMethod"}, - {537, "Unknown or unsupported digit map extension"}, - {538, "Event/signal parameter error (e.g., missing, erroneous, unsupported, unknown, etc.)"}, - {539, "Invalid or unsupported command parameter."}, - {540, "Per endpoint connection limit exceeded."}, - {541, "Invalid or unsupported LocalConnectionOptions"}, - {0, NULL } + {100, "The transaction is currently being executed. An actual completion message will follow on later."}, + {101, "The transaction has been queued for execution. An actual completion message will follow later."}, + {200, "The requested transaction was executed normally."}, + {250, "The connection was deleted."}, + {400, "The transaction could not be executed, due to a transient error."}, + {401, "The phone is already off hook"}, + {402, "The phone is already on hook"}, + {403, "The transaction could not be executed, because the endpoint does not have sufficient resources at this time"}, + {404, "Insufficient bandwidth at this time"}, + {405, "The transaction could not be executed, because the endpoint is \"restarting\"."}, + {406, "Transaction time-out. The transaction did not complete in a reasonable period of time and has been aborted."}, + {407, "Transaction aborted. The transaction was aborted by some external action, e.g., a ModifyConnection command aborted by a DeleteConnection command."}, + {409, "The transaction could not be executed because of internal overload."}, + {410, "No endpoint available. A valid \"any of\" wildcard was used, however there was no endpoint available to satisfy the request."}, + {500, "The transaction could not be executed, because the endpoint is unknown."}, + {501, "The transaction could not be executed, because the endpoint is not ready."}, + {502, "The transaction could not be executed, because the endpoint does not have sufficient resources"}, + {503, "\"All of\" wildcard too complicated."}, + {504, "Unknown or unsupported command."}, + {505, "Unsupported RemoteConnectionDescriptor."}, + {506, "Unable to satisfy both LocalConnectionOptions and RemoteConnectionDescriptor."}, + {507, "Unsupported functionality."}, + {508, "Unknown or unsupported quarantine handling."}, + {509, "Error in RemoteConnectionDescriptor."}, + {510, "The transaction could not be executed, because a protocol error was detected."}, + {511, "The transaction could not be executed, because the command contained an unrecognized extension."}, + {512, "The transaction could not be executed, because the gateway is not equipped to detect one of the requested events."}, + {513, "The transaction could not be executed, because the gateway is not equipped to generate one of the requested signals."}, + {514, "The transaction could not be executed, because the gateway cannot send the specified announcement."}, + {515, "The transaction refers to an incorrect connection-id (may have been already deleted)"}, + {516, "The transaction refers to an unknown call-id."}, + {517, "Unsupported or invalid mode."}, + {518, "Unsupported or unknown package."}, + {519, "Endpoint does not have a digit map."}, + {520, "The transaction could not be executed, because the endpoint is 'restarting'."}, + {521, "Endpoint redirected to another Call Agent."}, + {522, "No such event or signal."}, + {523, "Unknown action or illegal combination of actions"}, + {524, "Internal inconsistency in LocalConnectionOptions"}, + {525, "Unknown extension in LocalConnectionOptions"}, + {526, "Insufficient bandwidth"}, + {527, "Missing RemoteConnectionDescriptor"}, + {528, "Incompatible protocol version"}, + {529, "Internal hardware failure"}, + {530, "CAS signaling protocol error."}, + {531, "failure of a grouping of trunks (e.g. facility failure)."}, + {532, "Unsupported value(s) in LocalConnectionOptions."}, + {533, "Response too large."}, + {534, "Codec negotiation failure."}, + {535, "Packetization period not supported"}, + {536, "Unknown or unsupported RestartMethod"}, + {537, "Unknown or unsupported digit map extension"}, + {538, "Event/signal parameter error (e.g., missing, erroneous, unsupported, unknown, etc.)"}, + {539, "Invalid or unsupported command parameter."}, + {540, "Per endpoint connection limit exceeded."}, + {541, "Invalid or unsupported LocalConnectionOptions"}, + {0, NULL } }; /* TODO: add/use when tested have capture to test with */ /* static const value_string mgcp_reason_code_vals[] = { - {0, "Endpoint state is normal"}, - {900, "Endpoint malfunctioning."}, - {901, "Endpoint taken out-of-service."}, - {902, "Loss of lower layer connectivity (e.g., downstream sync)."}, - {903, "QoS resource reservation was lost."}, - {904, "Manual intervention."}, - {905, "Facility failure (e.g., DS-0 failure)."}, - {0, NULL } + {0, "Endpoint state is normal"}, + {900, "Endpoint malfunctioning."}, + {901, "Endpoint taken out-of-service."}, + {902, "Loss of lower layer connectivity (e.g., downstream sync)."}, + {903, "QoS resource reservation was lost."}, + {904, "Manual intervention."}, + {905, "Facility failure (e.g., DS-0 failure)."}, + {0, NULL } }; */ @@ -282,8 +282,8 @@ static dissector_handle_t sdp_handle; typedef struct _mgcp_call_info_key { - guint32 transid; - conversation_t *conversation; + guint32 transid; + conversation_t *conversation; } mgcp_call_info_key; static GMemChunk *mgcp_call_info_key_chunk; @@ -293,19 +293,19 @@ static GHashTable *mgcp_calls; /* Compare 2 keys */ static gint mgcp_call_equal(gconstpointer k1, gconstpointer k2) { - const mgcp_call_info_key* key1 = (const mgcp_call_info_key*) k1; - const mgcp_call_info_key* key2 = (const mgcp_call_info_key*) k2; + const mgcp_call_info_key* key1 = (const mgcp_call_info_key*) k1; + const mgcp_call_info_key* key2 = (const mgcp_call_info_key*) k2; - return (key1->transid == key2->transid && - key1->conversation == key2->conversation); + return (key1->transid == key2->transid && + key1->conversation == key2->conversation); } /* Calculate a hash key */ static guint mgcp_call_hash(gconstpointer k) { - const mgcp_call_info_key* key = (const mgcp_call_info_key*) k; + const mgcp_call_info_key* key = (const mgcp_call_info_key*) k; - return key->transid + key->conversation->index; + return key->transid + key->conversation->index; } @@ -315,101 +315,101 @@ static guint mgcp_call_hash(gconstpointer k) ************************************************************************/ static void dissect_mgcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { - gint sectionlen; - guint32 num_messages; - gint tvb_sectionend,tvb_sectionbegin, tvb_len, tvb_current_len; - proto_tree *mgcp_tree, *ti; - gchar *verb_name = ""; - - /* Initialize variables */ - tvb_sectionend = 0; - tvb_sectionbegin = tvb_sectionend; - sectionlen = 0; - tvb_len = tvb_length(tvb); - tvb_current_len = tvb_len; - num_messages = 0; - mgcp_tree = NULL; - ti = NULL; - - /* - * Set the columns now, so that they'll be set correctly if we throw - * an exception. We can set them later as well.... - */ - if (check_col(pinfo->cinfo, COL_PROTOCOL)) - col_add_str(pinfo->cinfo, COL_PROTOCOL, "MGCP"); - if (check_col(pinfo->cinfo, COL_INFO)) - col_clear(pinfo->cinfo, COL_INFO); - - /* - * Check to see whether we're really dealing with MGCP by looking - * for a valid MGCP verb or response code. This isn't infallible, - * but its cheap and its better than nothing. - */ - if (is_mgcp_verb(tvb,0,tvb_len, &verb_name) || is_mgcp_rspcode(tvb,0,tvb_len)) - { - /* - * Loop through however many mgcp messages may be stuck in - * this packet using piggybacking - */ - do - { - num_messages++; - if (tree) - { - /* Create our mgcp subtree */ - ti = proto_tree_add_item(tree,proto_mgcp,tvb,0,0, FALSE); - mgcp_tree = proto_item_add_subtree(ti, ett_mgcp); - } - - sectionlen = tvb_find_dot_line(tvb, tvb_sectionbegin, -1, &tvb_sectionend); - if (sectionlen != -1) - { - dissect_mgcp_message(tvb_new_subset(tvb, tvb_sectionbegin, - sectionlen, -1), - pinfo, tree, mgcp_tree,ti); - tvb_sectionbegin = tvb_sectionend; - } - else - { - break; - } - } while (tvb_sectionend < tvb_len); - - if (mgcp_tree) - { - proto_tree_add_uint_hidden(mgcp_tree, hf_mgcp_messagecount, tvb, - 0 ,0 , num_messages); - } - - /* - * Add our column information after dissecting SDP - * in order to prevent the column info changing to reflect the SDP - * (when showing message count) - */ - tvb_sectionbegin = 0; - if (check_col(pinfo->cinfo, COL_PROTOCOL)) - { - if (global_mgcp_message_count == TRUE ) - { - if (num_messages > 1) - { - col_add_fstr(pinfo->cinfo, COL_PROTOCOL, "MGCP (%i messages)",num_messages); - } - else - { - col_add_fstr(pinfo->cinfo, COL_PROTOCOL, "MGCP (%i message)",num_messages); - } - } - } - - if (check_col(pinfo->cinfo, COL_INFO)) - { - sectionlen = tvb_find_line_end(tvb, tvb_sectionbegin,-1, - &tvb_sectionend,FALSE); - col_prepend_fstr(pinfo->cinfo, COL_INFO, "%s", - tvb_format_text(tvb, tvb_sectionbegin, sectionlen)); - } - } + gint sectionlen; + guint32 num_messages; + gint tvb_sectionend,tvb_sectionbegin, tvb_len, tvb_current_len; + proto_tree *mgcp_tree, *ti; + gchar *verb_name = ""; + + /* Initialize variables */ + tvb_sectionend = 0; + tvb_sectionbegin = tvb_sectionend; + sectionlen = 0; + tvb_len = tvb_length(tvb); + tvb_current_len = tvb_len; + num_messages = 0; + mgcp_tree = NULL; + ti = NULL; + + /* + * Set the columns now, so that they'll be set correctly if we throw + * an exception. We can set them later as well.... + */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_add_str(pinfo->cinfo, COL_PROTOCOL, "MGCP"); + if (check_col(pinfo->cinfo, COL_INFO)) + col_clear(pinfo->cinfo, COL_INFO); + + /* + * Check to see whether we're really dealing with MGCP by looking + * for a valid MGCP verb or response code. This isn't infallible, + * but its cheap and its better than nothing. + */ + if (is_mgcp_verb(tvb,0,tvb_len, &verb_name) || is_mgcp_rspcode(tvb,0,tvb_len)) + { + /* + * Loop through however many mgcp messages may be stuck in + * this packet using piggybacking + */ + do + { + num_messages++; + if (tree) + { + /* Create our mgcp subtree */ + ti = proto_tree_add_item(tree,proto_mgcp,tvb,0,0, FALSE); + mgcp_tree = proto_item_add_subtree(ti, ett_mgcp); + } + + sectionlen = tvb_find_dot_line(tvb, tvb_sectionbegin, -1, &tvb_sectionend); + if (sectionlen != -1) + { + dissect_mgcp_message(tvb_new_subset(tvb, tvb_sectionbegin, + sectionlen, -1), + pinfo, tree, mgcp_tree,ti); + tvb_sectionbegin = tvb_sectionend; + } + else + { + break; + } + } while (tvb_sectionend < tvb_len); + + if (mgcp_tree) + { + proto_tree_add_uint_hidden(mgcp_tree, hf_mgcp_messagecount, tvb, + 0 ,0 , num_messages); + } + + /* + * Add our column information after dissecting SDP + * in order to prevent the column info changing to reflect the SDP + * (when showing message count) + */ + tvb_sectionbegin = 0; + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + { + if (global_mgcp_message_count == TRUE ) + { + if (num_messages > 1) + { + col_add_fstr(pinfo->cinfo, COL_PROTOCOL, "MGCP (%i messages)",num_messages); + } + else + { + col_add_fstr(pinfo->cinfo, COL_PROTOCOL, "MGCP (%i message)",num_messages); + } + } + } + + if (check_col(pinfo->cinfo, COL_INFO)) + { + sectionlen = tvb_find_line_end(tvb, tvb_sectionbegin,-1, + &tvb_sectionend,FALSE); + col_prepend_fstr(pinfo->cinfo, COL_INFO, "%s", + tvb_format_text(tvb, tvb_sectionbegin, sectionlen)); + } + } } #define MAX_MGCP_MESSAGES_IN_PACKET 5 @@ -421,97 +421,97 @@ static mgcp_info_t *mi; static void dissect_mgcp_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *mgcp_tree, proto_tree *ti) { - /* Declare variables */ - gint sectionlen; - gint tvb_sectionend,tvb_sectionbegin, tvb_len, tvb_current_len; - tvbuff_t *next_tvb; - gchar *verb_name = ""; - - /* Initialise stat info for passing to tap */ - pi_current++; - if (pi_current == MAX_MGCP_MESSAGES_IN_PACKET) - { - /* Overwrite info in first struct if run out of space... */ - pi_current = 0; - } - mi = &pi_arr[pi_current]; - - - mi->mgcp_type = MGCP_OTHERS; - mi->code[0] = '\0'; - mi->transid = 0; - mi->req_time.secs = 0; - mi->req_time.nsecs = 0; - mi->is_duplicate = FALSE; - mi->request_available = FALSE; - mi->req_num = 0; - mi->endpointId = NULL; - mi->observedEvents = NULL; - mi->rspcode = 0; - mi->signalReq = NULL; - mi->hasDigitMap = FALSE; - - /* Initialize variables */ - tvb_sectionend = 0; - tvb_sectionbegin = tvb_sectionend; - sectionlen = 0; - tvb_len = tvb_length(tvb); - tvb_current_len = tvb_len; - - /* - * Check to see whether we're really dealing with MGCP by looking - * for a valid MGCP verb or response code. This isn't infallible, - * but its cheap and its better than nothing. - */ - if (is_mgcp_verb(tvb,0,tvb_len,&verb_name) || is_mgcp_rspcode(tvb,0,tvb_len)) - { - /* dissect first line */ - tvb_sectionbegin = 0; - tvb_current_len = tvb_len; - tvb_sectionend = tvb_sectionbegin; - sectionlen = tvb_find_line_end(tvb,0,-1,&tvb_sectionend,FALSE); - if (sectionlen > 0) - { - dissect_mgcp_firstline(tvb_new_subset(tvb, tvb_sectionbegin, - sectionlen,-1), pinfo, - mgcp_tree); - } - tvb_sectionbegin = tvb_sectionend; - - /* Dissect params */ - if (tvb_sectionbegin < tvb_len) - { - sectionlen = tvb_find_null_line(tvb, tvb_sectionbegin, -1, - &tvb_sectionend); - if (sectionlen > 0) - { - dissect_mgcp_params(tvb_new_subset(tvb, tvb_sectionbegin, sectionlen, -1), - mgcp_tree); - tvb_sectionbegin = tvb_sectionend; - } - } - - /* Set the mgcp payload length correctly so we don't include any - encapsulated SDP */ - sectionlen = tvb_sectionend; - proto_item_set_len(ti,sectionlen); - - /* Display the raw text of the mgcp message if desired */ - - /* Do we want to display the raw text of our MGCP packet? */ - if (global_mgcp_raw_text) - { - if (tree) - mgcp_raw_text_add(tvb, mgcp_tree); - } - - /* Dissect sdp payload */ - if (tvb_sectionend < tvb_len) - { - next_tvb = tvb_new_subset(tvb, tvb_sectionend, -1, -1); - call_dissector(sdp_handle, next_tvb, pinfo, tree); - } - } + /* Declare variables */ + gint sectionlen; + gint tvb_sectionend,tvb_sectionbegin, tvb_len, tvb_current_len; + tvbuff_t *next_tvb; + gchar *verb_name = ""; + + /* Initialise stat info for passing to tap */ + pi_current++; + if (pi_current == MAX_MGCP_MESSAGES_IN_PACKET) + { + /* Overwrite info in first struct if run out of space... */ + pi_current = 0; + } + mi = &pi_arr[pi_current]; + + + mi->mgcp_type = MGCP_OTHERS; + mi->code[0] = '\0'; + mi->transid = 0; + mi->req_time.secs = 0; + mi->req_time.nsecs = 0; + mi->is_duplicate = FALSE; + mi->request_available = FALSE; + mi->req_num = 0; + mi->endpointId = NULL; + mi->observedEvents = NULL; + mi->rspcode = 0; + mi->signalReq = NULL; + mi->hasDigitMap = FALSE; + + /* Initialize variables */ + tvb_sectionend = 0; + tvb_sectionbegin = tvb_sectionend; + sectionlen = 0; + tvb_len = tvb_length(tvb); + tvb_current_len = tvb_len; + + /* + * Check to see whether we're really dealing with MGCP by looking + * for a valid MGCP verb or response code. This isn't infallible, + * but its cheap and its better than nothing. + */ + if (is_mgcp_verb(tvb,0,tvb_len,&verb_name) || is_mgcp_rspcode(tvb,0,tvb_len)) + { + /* dissect first line */ + tvb_sectionbegin = 0; + tvb_current_len = tvb_len; + tvb_sectionend = tvb_sectionbegin; + sectionlen = tvb_find_line_end(tvb,0,-1,&tvb_sectionend,FALSE); + if (sectionlen > 0) + { + dissect_mgcp_firstline(tvb_new_subset(tvb, tvb_sectionbegin, + sectionlen,-1), pinfo, + mgcp_tree); + } + tvb_sectionbegin = tvb_sectionend; + + /* Dissect params */ + if (tvb_sectionbegin < tvb_len) + { + sectionlen = tvb_find_null_line(tvb, tvb_sectionbegin, -1, + &tvb_sectionend); + if (sectionlen > 0) + { + dissect_mgcp_params(tvb_new_subset(tvb, tvb_sectionbegin, sectionlen, -1), + mgcp_tree); + tvb_sectionbegin = tvb_sectionend; + } + } + + /* Set the mgcp payload length correctly so we don't include any + encapsulated SDP */ + sectionlen = tvb_sectionend; + proto_item_set_len(ti,sectionlen); + + /* Display the raw text of the mgcp message if desired */ + + /* Do we want to display the raw text of our MGCP packet? */ + if (global_mgcp_raw_text) + { + if (tree) + mgcp_raw_text_add(tvb, mgcp_tree); + } + + /* Dissect sdp payload */ + if (tvb_sectionend < tvb_len) + { + next_tvb = tvb_new_subset(tvb, tvb_sectionend, -1, -1); + call_dissector(sdp_handle, next_tvb, pinfo, tree); + } + } } @@ -522,50 +522,50 @@ static void dissect_mgcp_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree * static void mgcp_raw_text_add(tvbuff_t *tvb, proto_tree *tree) { - gint tvb_linebegin,tvb_lineend,tvb_len,linelen; - - tvb_linebegin = 0; - tvb_len = tvb_length(tvb); - - do - { - tvb_find_line_end(tvb,tvb_linebegin,-1,&tvb_lineend,FALSE); - linelen = tvb_lineend - tvb_linebegin; - proto_tree_add_text(tree, tvb, tvb_linebegin, linelen, "%s", - tvb_format_text(tvb, tvb_linebegin, linelen)); - tvb_linebegin = tvb_lineend; - } while (tvb_lineend < tvb_len); + gint tvb_linebegin,tvb_lineend,tvb_len,linelen; + + tvb_linebegin = 0; + tvb_len = tvb_length(tvb); + + do + { + tvb_find_line_end(tvb,tvb_linebegin,-1,&tvb_lineend,FALSE); + linelen = tvb_lineend - tvb_linebegin; + proto_tree_add_text(tree, tvb, tvb_linebegin, linelen, "%s", + tvb_format_text(tvb, tvb_linebegin, linelen)); + tvb_linebegin = tvb_lineend; + } while (tvb_lineend < tvb_len); } /* Discard and init any state we've saved */ static void mgcp_init_protocol(void) { - if (mgcp_calls != NULL) - { - g_hash_table_destroy(mgcp_calls); - mgcp_calls = NULL; - } - if (mgcp_call_info_key_chunk != NULL) - { - g_mem_chunk_destroy(mgcp_call_info_key_chunk); - mgcp_call_info_key_chunk = NULL; - } - if (mgcp_call_info_value_chunk != NULL) - { - g_mem_chunk_destroy(mgcp_call_info_value_chunk); - mgcp_call_info_value_chunk = NULL; - } - - mgcp_calls = g_hash_table_new(mgcp_call_hash, mgcp_call_equal); - mgcp_call_info_key_chunk = g_mem_chunk_new("call_info_key_chunk", - sizeof(mgcp_call_info_key), - 200 * sizeof(mgcp_call_info_key), - G_ALLOC_ONLY); - mgcp_call_info_value_chunk = g_mem_chunk_new("call_info_value_chunk", - sizeof(mgcp_call_t), - 200 * sizeof(mgcp_call_t), - G_ALLOC_ONLY); + if (mgcp_calls != NULL) + { + g_hash_table_destroy(mgcp_calls); + mgcp_calls = NULL; + } + if (mgcp_call_info_key_chunk != NULL) + { + g_mem_chunk_destroy(mgcp_call_info_key_chunk); + mgcp_call_info_key_chunk = NULL; + } + if (mgcp_call_info_value_chunk != NULL) + { + g_mem_chunk_destroy(mgcp_call_info_value_chunk); + mgcp_call_info_value_chunk = NULL; + } + + mgcp_calls = g_hash_table_new(mgcp_call_hash, mgcp_call_equal); + mgcp_call_info_key_chunk = g_mem_chunk_new("call_info_key_chunk", + sizeof(mgcp_call_info_key), + 200 * sizeof(mgcp_call_info_key), + G_ALLOC_ONLY); + mgcp_call_info_value_chunk = g_mem_chunk_new("call_info_value_chunk", + sizeof(mgcp_call_t), + 200 * sizeof(mgcp_call_t), + G_ALLOC_ONLY); } /* Register all the bits needed with the filtering engine */ @@ -818,36 +818,36 @@ void proto_register_mgcp(void) /* The registration hand-off routine */ void proto_reg_handoff_mgcp(void) { - static int mgcp_prefs_initialized = FALSE; - static dissector_handle_t mgcp_handle; - - /* Get a handle for the SDP dissector. */ - sdp_handle = find_dissector("sdp"); - - if (!mgcp_prefs_initialized) - { - mgcp_handle = create_dissector_handle(dissect_mgcp, proto_mgcp); - mgcp_prefs_initialized = TRUE; - } - else - { - dissector_delete("tcp.port", gateway_tcp_port, mgcp_handle); - dissector_delete("udp.port", gateway_udp_port, mgcp_handle); - dissector_delete("tcp.port", callagent_tcp_port, mgcp_handle); - dissector_delete("udp.port", callagent_udp_port, mgcp_handle); - } - - /* Set our port number for future use */ - gateway_tcp_port = global_mgcp_gateway_tcp_port; - gateway_udp_port = global_mgcp_gateway_udp_port; - - callagent_tcp_port = global_mgcp_callagent_tcp_port; - callagent_udp_port = global_mgcp_callagent_udp_port; - - dissector_add("tcp.port", global_mgcp_gateway_tcp_port, mgcp_handle); - dissector_add("udp.port", global_mgcp_gateway_udp_port, mgcp_handle); - dissector_add("tcp.port", global_mgcp_callagent_tcp_port, mgcp_handle); - dissector_add("udp.port", global_mgcp_callagent_udp_port, mgcp_handle); + static int mgcp_prefs_initialized = FALSE; + static dissector_handle_t mgcp_handle; + + /* Get a handle for the SDP dissector. */ + sdp_handle = find_dissector("sdp"); + + if (!mgcp_prefs_initialized) + { + mgcp_handle = create_dissector_handle(dissect_mgcp, proto_mgcp); + mgcp_prefs_initialized = TRUE; + } + else + { + dissector_delete("tcp.port", gateway_tcp_port, mgcp_handle); + dissector_delete("udp.port", gateway_udp_port, mgcp_handle); + dissector_delete("tcp.port", callagent_tcp_port, mgcp_handle); + dissector_delete("udp.port", callagent_udp_port, mgcp_handle); + } + + /* Set our port number for future use */ + gateway_tcp_port = global_mgcp_gateway_tcp_port; + gateway_udp_port = global_mgcp_gateway_udp_port; + + callagent_tcp_port = global_mgcp_callagent_tcp_port; + callagent_udp_port = global_mgcp_callagent_udp_port; + + dissector_add("tcp.port", global_mgcp_gateway_tcp_port, mgcp_handle); + dissector_add("udp.port", global_mgcp_gateway_udp_port, mgcp_handle); + dissector_add("tcp.port", global_mgcp_callagent_tcp_port, mgcp_handle); + dissector_add("udp.port", global_mgcp_callagent_udp_port, mgcp_handle); } /* @@ -865,39 +865,39 @@ void proto_reg_handoff_mgcp(void) */ static gboolean is_mgcp_verb(tvbuff_t *tvb, gint offset, gint maxlength, gchar **verb_name) { - int returnvalue = FALSE; - guint8 word[5]; - - /* Read the string into 'word' and see if it looks like the start of a verb */ - if ((maxlength >= 4) && tvb_get_nstringz0(tvb, offset, sizeof(word), word)) - { - if (((strncasecmp(word, "EPCF", 4) == 0) && (*verb_name = "EndpointConfiguration|")) || - ((strncasecmp(word, "CRCX", 4) == 0) && (*verb_name = "CreateConnection")) || - ((strncasecmp(word, "MDCX", 4) == 0) && (*verb_name = "ModifyConnection")) || - ((strncasecmp(word, "DLCX", 4) == 0) && (*verb_name = "DeleteConnection")) || - ((strncasecmp(word, "RQNT", 4) == 0) && (*verb_name = "NotificationRequest")) || - ((strncasecmp(word, "NTFY", 4) == 0) && (*verb_name = "Notify")) || - ((strncasecmp(word, "AUEP", 4) == 0) && (*verb_name = "AuditEndpoint")) || - ((strncasecmp(word, "AUCX", 4) == 0) && (*verb_name = "AuditConnection")) || - ((strncasecmp(word, "RSIP", 4) == 0) && (*verb_name = "RestartInProgress")) || - (word[0] == 'X' && is_rfc2234_alpha(word[1]) && is_rfc2234_alpha(word[2]) && - is_rfc2234_alpha(word[3]) && (*verb_name = "*Experimental*"))) - { - returnvalue = TRUE; - } - } - - /* May be whitespace after verb code - anything else is an error.. */ - if (returnvalue && maxlength >= 5) - { - char next = tvb_get_guint8(tvb,4); - if ((next != ' ') && (next != '\t')) - { - returnvalue = FALSE; - } - } - - return returnvalue; + int returnvalue = FALSE; + guint8 word[5]; + + /* Read the string into 'word' and see if it looks like the start of a verb */ + if ((maxlength >= 4) && tvb_get_nstringz0(tvb, offset, sizeof(word), word)) + { + if (((strncasecmp(word, "EPCF", 4) == 0) && (*verb_name = "EndpointConfiguration|")) || + ((strncasecmp(word, "CRCX", 4) == 0) && (*verb_name = "CreateConnection")) || + ((strncasecmp(word, "MDCX", 4) == 0) && (*verb_name = "ModifyConnection")) || + ((strncasecmp(word, "DLCX", 4) == 0) && (*verb_name = "DeleteConnection")) || + ((strncasecmp(word, "RQNT", 4) == 0) && (*verb_name = "NotificationRequest")) || + ((strncasecmp(word, "NTFY", 4) == 0) && (*verb_name = "Notify")) || + ((strncasecmp(word, "AUEP", 4) == 0) && (*verb_name = "AuditEndpoint")) || + ((strncasecmp(word, "AUCX", 4) == 0) && (*verb_name = "AuditConnection")) || + ((strncasecmp(word, "RSIP", 4) == 0) && (*verb_name = "RestartInProgress")) || + (word[0] == 'X' && is_rfc2234_alpha(word[1]) && is_rfc2234_alpha(word[2]) && + is_rfc2234_alpha(word[3]) && (*verb_name = "*Experimental*"))) + { + returnvalue = TRUE; + } + } + + /* May be whitespace after verb code - anything else is an error.. */ + if (returnvalue && maxlength >= 5) + { + char next = tvb_get_guint8(tvb,4); + if ((next != ' ') && (next != '\t')) + { + returnvalue = FALSE; + } + } + + return returnvalue; } /* @@ -916,30 +916,30 @@ static gboolean is_mgcp_verb(tvbuff_t *tvb, gint offset, gint maxlength, gchar * */ static gboolean is_mgcp_rspcode(tvbuff_t *tvb, gint offset, gint maxlength) { - int returnvalue = FALSE; - guint8 word[4]; - - /* Do 1st 3 characters look like digits? */ - if (maxlength >= 3) - { - tvb_get_nstringz0(tvb, offset, sizeof(word), word); - if (isdigit(word[0]) && isdigit(word[1]) && isdigit(word[2])) - { - returnvalue = TRUE; - } - } - - /* Maybe some white space after the 3rd digit - anything else is an error */ - if (returnvalue && maxlength >= 4) - { - char next = tvb_get_guint8(tvb, 3); - if ((next != ' ') && (next != '\t')) - { - returnvalue = FALSE; - } - } - - return returnvalue; + int returnvalue = FALSE; + guint8 word[4]; + + /* Do 1st 3 characters look like digits? */ + if (maxlength >= 3) + { + tvb_get_nstringz0(tvb, offset, sizeof(word), word); + if (isdigit(word[0]) && isdigit(word[1]) && isdigit(word[2])) + { + returnvalue = TRUE; + } + } + + /* Maybe some white space after the 3rd digit - anything else is an error */ + if (returnvalue && maxlength >= 4) + { + char next = tvb_get_guint8(tvb, 3); + if ((next != ' ') && (next != '\t')) + { + returnvalue = FALSE; + } + } + + return returnvalue; } /* @@ -956,7 +956,7 @@ static gboolean is_mgcp_rspcode(tvbuff_t *tvb, gint offset, gint maxlength) */ static gboolean is_rfc2234_alpha(guint8 c) { - return ((c <= 'Z' && c >= 'A' ) || (c <= 'z' && c >= 'a')); + return ((c <= 'Z' && c >= 'A' ) || (c <= 'z' && c >= 'a')); } @@ -977,219 +977,219 @@ static gboolean is_rfc2234_alpha(guint8 c) */ static gint tvb_parse_param(tvbuff_t* tvb, gint offset, gint len, int** hf) { - gint returnvalue = -1, tvb_current_offset,counter; - guint8 tempchar, plus_minus; - tvb_current_offset = offset; - *hf = NULL; - - if (len > 0) - { - tempchar = tvb_get_guint8(tvb,tvb_current_offset); - - switch (tempchar) - { - case 'K': - *hf = &hf_mgcp_param_rspack; - break; - case 'B': - *hf = &hf_mgcp_param_bearerinfo; - break; - case 'C': - *hf = &hf_mgcp_param_callid; - break; - case 'I': - tvb_current_offset++; - if (len > (tvb_current_offset - offset) && - (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') - { - *hf = &hf_mgcp_param_connectionid; - tvb_current_offset--; - } - else - if (tempchar == '2') - { - *hf = &hf_mgcp_param_secondconnectionid; - } - break; - case 'N': - *hf = &hf_mgcp_param_notifiedentity; - break; - case 'X': - /* Move past 'X' */ - tvb_current_offset++; - - /* X: is RequestIdentifier */ - if (len > (tvb_current_offset - offset) && - (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') - { - *hf = &hf_mgcp_param_requestid; - tvb_current_offset--; - } - - /* X+...: or X-....: are vendor extension parameters */ - else - if (len > (tvb_current_offset - offset) && - ((plus_minus = tvb_get_guint8(tvb,tvb_current_offset)) == '-' || - (plus_minus == '+'))) - { - /* Move past + or - */ - tvb_current_offset++; - - /* Keep going, through possible vendor param name */ - for (counter = 1; - ((len > (counter + tvb_current_offset-offset)) && - (is_rfc2234_alpha(tempchar = tvb_get_guint8(tvb, tvb_current_offset+counter)) || - isdigit(tempchar))) ; - counter++); - - if (tempchar == ':') - { - /* Looks like a valid vendor param name */ - tvb_current_offset += counter; - switch (plus_minus) - { - case '+': - *hf = &hf_mgcp_param_extension_critical; - break; - case '-': - *hf = &hf_mgcp_param_extension; - break; - } - } - } - break; - case 'L': - *hf = &hf_mgcp_param_localconnoptions; - break; - case 'M': - tvb_current_offset++; - if (len > (tvb_current_offset - offset) && - (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') - { - *hf = &hf_mgcp_param_connectionmode; - tvb_current_offset--; - } - else - if (tempchar == 'D') - { - *hf = &hf_mgcp_param_maxmgcpdatagram; - } - break; - case 'R': - tvb_current_offset++; - if (len > (tvb_current_offset - offset) && - (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') - { - *hf = &hf_mgcp_param_reqevents; - tvb_current_offset--; - } - else - if ( tempchar == 'M') - { - *hf = &hf_mgcp_param_restartmethod; - } - else - if (tempchar == 'D') - { - *hf = &hf_mgcp_param_restartdelay; - } - break; - case 'S': - *hf = &hf_mgcp_param_signalreq; - break; - case 'D': - *hf = &hf_mgcp_param_digitmap; - mi->hasDigitMap = TRUE; - break; - case 'O': - *hf = &hf_mgcp_param_observedevent; - break; - case 'P': - tvb_current_offset++; - if (len > (tvb_current_offset - offset) && - (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') - { - *hf = &hf_mgcp_param_connectionparam; - tvb_current_offset--; - } - else - if ( tempchar == 'L') - { - *hf = &hf_mgcp_param_packagelist; - } - break; - case 'E': - tvb_current_offset++; - if (len > (tvb_current_offset - offset) && - (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') - { - *hf = &hf_mgcp_param_reasoncode; - tvb_current_offset--; - } - else - if ( tempchar == 'S') - { - *hf = &hf_mgcp_param_eventstates; - } - break; - case 'Z': - tvb_current_offset++; - if (len > (tvb_current_offset - offset) && - (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') - { - *hf = &hf_mgcp_param_specificendpoint; - tvb_current_offset--; - } - else - if (tempchar == '2') - { - *hf = &hf_mgcp_param_secondendpointid; - } - break; - case 'F': - *hf = &hf_mgcp_param_reqinfo; - break; - case 'Q': - *hf = &hf_mgcp_param_quarantinehandling; - break; - case 'T': - *hf = &hf_mgcp_param_detectedevents; - break; - case 'A': - *hf = &hf_mgcp_param_capabilities; - break; - - default: - *hf = &hf_mgcp_param_invalid; - break; - } - - /* Move to (hopefully) the colon */ - tvb_current_offset++; - - /* Add a recognised parameter type if we have one */ - if (*hf != NULL && len > (tvb_current_offset - offset) && - (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') - { - tvb_current_offset++; - tvb_current_offset = tvb_skip_wsp(tvb,tvb_current_offset, (len - tvb_current_offset + offset)); - returnvalue = tvb_current_offset; - } - } - else - { - /* Was an empty line */ - *hf = &hf_mgcp_param_invalid; - } - - /* For these types, show the whole line */ - if ((*hf == &hf_mgcp_param_invalid) || - (*hf == &hf_mgcp_param_extension) || (*hf == &hf_mgcp_param_extension_critical)) - { - returnvalue = offset; - } - - return returnvalue; + gint returnvalue = -1, tvb_current_offset,counter; + guint8 tempchar, plus_minus; + tvb_current_offset = offset; + *hf = NULL; + + if (len > 0) + { + tempchar = tvb_get_guint8(tvb,tvb_current_offset); + + switch (tempchar) + { + case 'K': + *hf = &hf_mgcp_param_rspack; + break; + case 'B': + *hf = &hf_mgcp_param_bearerinfo; + break; + case 'C': + *hf = &hf_mgcp_param_callid; + break; + case 'I': + tvb_current_offset++; + if (len > (tvb_current_offset - offset) && + (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') + { + *hf = &hf_mgcp_param_connectionid; + tvb_current_offset--; + } + else + if (tempchar == '2') + { + *hf = &hf_mgcp_param_secondconnectionid; + } + break; + case 'N': + *hf = &hf_mgcp_param_notifiedentity; + break; + case 'X': + /* Move past 'X' */ + tvb_current_offset++; + + /* X: is RequestIdentifier */ + if (len > (tvb_current_offset - offset) && + (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') + { + *hf = &hf_mgcp_param_requestid; + tvb_current_offset--; + } + + /* X+...: or X-....: are vendor extension parameters */ + else + if (len > (tvb_current_offset - offset) && + ((plus_minus = tvb_get_guint8(tvb,tvb_current_offset)) == '-' || + (plus_minus == '+'))) + { + /* Move past + or - */ + tvb_current_offset++; + + /* Keep going, through possible vendor param name */ + for (counter = 1; + ((len > (counter + tvb_current_offset-offset)) && + (is_rfc2234_alpha(tempchar = tvb_get_guint8(tvb, tvb_current_offset+counter)) || + isdigit(tempchar))) ; + counter++); + + if (tempchar == ':') + { + /* Looks like a valid vendor param name */ + tvb_current_offset += counter; + switch (plus_minus) + { + case '+': + *hf = &hf_mgcp_param_extension_critical; + break; + case '-': + *hf = &hf_mgcp_param_extension; + break; + } + } + } + break; + case 'L': + *hf = &hf_mgcp_param_localconnoptions; + break; + case 'M': + tvb_current_offset++; + if (len > (tvb_current_offset - offset) && + (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') + { + *hf = &hf_mgcp_param_connectionmode; + tvb_current_offset--; + } + else + if (tempchar == 'D') + { + *hf = &hf_mgcp_param_maxmgcpdatagram; + } + break; + case 'R': + tvb_current_offset++; + if (len > (tvb_current_offset - offset) && + (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') + { + *hf = &hf_mgcp_param_reqevents; + tvb_current_offset--; + } + else + if ( tempchar == 'M') + { + *hf = &hf_mgcp_param_restartmethod; + } + else + if (tempchar == 'D') + { + *hf = &hf_mgcp_param_restartdelay; + } + break; + case 'S': + *hf = &hf_mgcp_param_signalreq; + break; + case 'D': + *hf = &hf_mgcp_param_digitmap; + mi->hasDigitMap = TRUE; + break; + case 'O': + *hf = &hf_mgcp_param_observedevent; + break; + case 'P': + tvb_current_offset++; + if (len > (tvb_current_offset - offset) && + (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') + { + *hf = &hf_mgcp_param_connectionparam; + tvb_current_offset--; + } + else + if ( tempchar == 'L') + { + *hf = &hf_mgcp_param_packagelist; + } + break; + case 'E': + tvb_current_offset++; + if (len > (tvb_current_offset - offset) && + (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') + { + *hf = &hf_mgcp_param_reasoncode; + tvb_current_offset--; + } + else + if ( tempchar == 'S') + { + *hf = &hf_mgcp_param_eventstates; + } + break; + case 'Z': + tvb_current_offset++; + if (len > (tvb_current_offset - offset) && + (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') + { + *hf = &hf_mgcp_param_specificendpoint; + tvb_current_offset--; + } + else + if (tempchar == '2') + { + *hf = &hf_mgcp_param_secondendpointid; + } + break; + case 'F': + *hf = &hf_mgcp_param_reqinfo; + break; + case 'Q': + *hf = &hf_mgcp_param_quarantinehandling; + break; + case 'T': + *hf = &hf_mgcp_param_detectedevents; + break; + case 'A': + *hf = &hf_mgcp_param_capabilities; + break; + + default: + *hf = &hf_mgcp_param_invalid; + break; + } + + /* Move to (hopefully) the colon */ + tvb_current_offset++; + + /* Add a recognised parameter type if we have one */ + if (*hf != NULL && len > (tvb_current_offset - offset) && + (tempchar = tvb_get_guint8(tvb,tvb_current_offset)) == ':') + { + tvb_current_offset++; + tvb_current_offset = tvb_skip_wsp(tvb,tvb_current_offset, (len - tvb_current_offset + offset)); + returnvalue = tvb_current_offset; + } + } + else + { + /* Was an empty line */ + *hf = &hf_mgcp_param_invalid; + } + + /* For these types, show the whole line */ + if ((*hf == &hf_mgcp_param_invalid) || + (*hf == &hf_mgcp_param_extension) || (*hf == &hf_mgcp_param_extension_critical)) + { + returnvalue = offset; + } + + return returnvalue; } @@ -1211,394 +1211,392 @@ static gint tvb_parse_param(tvbuff_t* tvb, gint offset, gint len, int** hf) */ static void dissect_mgcp_firstline(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { - gint tvb_current_offset,tvb_previous_offset,tvb_len,tvb_current_len; - gint tokennum, tokenlen; - char *transid = NULL; - char *code = NULL; - char *endpointId = NULL; - mgcp_type_t mgcp_type = MGCP_OTHERS; - conversation_t* conversation; - mgcp_call_info_key mgcp_call_key; - mgcp_call_info_key *new_mgcp_call_key = NULL; - mgcp_call_t *mgcp_call = NULL; - nstime_t delta; - gint rspcode = 0; - gchar *verb_description = ""; - char code_with_verb[64] = ""; /* To fit "<4-letter-code> (<longest-verb>)" */ - - static address null_address = { AT_NONE, 0, NULL }; - proto_item* (*my_proto_tree_add_string)(proto_tree*, int, tvbuff_t*, gint, gint, const char*); - tvb_previous_offset = 0; - tvb_len = tvb_length(tvb); - tvb_current_len = tvb_len; - tvb_current_offset = tvb_previous_offset; - mi->is_duplicate = FALSE; - mi->request_available = FALSE; - - if (tree) - { - tokennum = 0; - - if (global_mgcp_dissect_tree) - { - my_proto_tree_add_string = proto_tree_add_string; - } - else - { - my_proto_tree_add_string = proto_tree_add_string_hidden; - } - - do - { - tvb_current_len = tvb_length_remaining(tvb,tvb_previous_offset); - tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_current_len, ' '); - if (tvb_current_offset == -1) - { - tvb_current_offset = tvb_len; - tokenlen = tvb_current_len; - } - else - { - tokenlen = tvb_current_offset - tvb_previous_offset; - } - if (tokennum == 0) - { - code = tvb_format_text(tvb,tvb_previous_offset,tokenlen); - strncpy(mi->code,code,4); - mi->code[4] = '\0'; - if (is_mgcp_verb(tvb,tvb_previous_offset,tvb_current_len,&verb_description)) - { - mgcp_type = MGCP_REQUEST; - if (verb_description != NULL) - { - /* Can show verb along with code if known */ - sprintf(code_with_verb, "%s (%s)", code, verb_description); - } - - proto_tree_add_string_format(tree, hf_mgcp_req_verb, tvb, - tvb_previous_offset, tokenlen, - code, "%s", - strlen(code_with_verb) ? code_with_verb : code); - } - else - if (is_mgcp_rspcode(tvb,tvb_previous_offset,tvb_current_len)) - { - mgcp_type = MGCP_RESPONSE; - rspcode = atoi(code); - mi->rspcode = rspcode; - proto_tree_add_uint(tree,hf_mgcp_rsp_rspcode, tvb, - tvb_previous_offset, tokenlen, - rspcode); - - } - else - { - break; - } - } - if (tokennum == 1) - { - transid = tvb_format_text(tvb,tvb_previous_offset,tokenlen); - /* XXX - what if this isn't a valid text string? */ - mi->transid = atol(transid); - my_proto_tree_add_string(tree, hf_mgcp_transid, tvb, - tvb_previous_offset, tokenlen, - transid); - } - if (tokennum == 2) - { - if (mgcp_type == MGCP_REQUEST) - { - endpointId = tvb_format_text(tvb, tvb_previous_offset,tokenlen); - mi->endpointId = g_strdup(endpointId); - my_proto_tree_add_string(tree,hf_mgcp_req_endpoint, tvb, - tvb_previous_offset, tokenlen, - endpointId); - } - else - if (mgcp_type == MGCP_RESPONSE) - { - if (tvb_current_offset < tvb_len) - { - tokenlen = tvb_find_line_end(tvb, tvb_previous_offset, - -1, &tvb_current_offset, FALSE); - } - else - { - tokenlen = tvb_current_len; - } - my_proto_tree_add_string(tree, hf_mgcp_rsp_rspstring, tvb, - tvb_previous_offset, tokenlen, - tvb_format_text(tvb, tvb_previous_offset, - tokenlen)); - break; - } - } - - if ((tokennum == 3 && mgcp_type == MGCP_REQUEST)) - { - if (tvb_current_offset < tvb_len ) - { - tokenlen = tvb_find_line_end(tvb, tvb_previous_offset, - -1, &tvb_current_offset,FALSE); - } - else - { - tokenlen = tvb_current_len; - } - my_proto_tree_add_string(tree,hf_mgcp_version, tvb, - tvb_previous_offset, tokenlen, - tvb_format_text(tvb,tvb_previous_offset, - tokenlen)); - break; - } - if (tvb_current_offset < tvb_len) - { - tvb_previous_offset = tvb_skip_wsp(tvb, tvb_current_offset, - tvb_current_len); - } - tokennum++; - } while (tvb_current_offset < tvb_len && tvb_previous_offset < tvb_len && tokennum <= 3); - - switch (mgcp_type) - { - case MGCP_RESPONSE: - proto_tree_add_boolean_hidden(tree, hf_mgcp_rsp, tvb, 0, 0, TRUE); - /* Check for MGCP response. A response must match a call that - we've seen, and the response must be sent to the same - port and address that the call came from, and must - come from the port to which the call was sent. - - If the transport is connection-oriented (we check, for - now, only for "pinfo->ptype" of PT_TCP), we take - into account the address from which the call was sent - and the address to which the call was sent, because - the addresses of the two endpoints should be the same - for all calls and replies. - - If the transport is connectionless, we don't worry - about the address to which the call was sent and from - which the reply was sent, because there's no - guarantee that the reply will come from the address - to which the call was sent. */ - if (pinfo->ptype == PT_TCP) - { - conversation = find_conversation(pinfo->fd->num, &pinfo->src, - &pinfo->dst, pinfo->ptype, pinfo->srcport, - pinfo->destport, 0); - } - else - { - /* XXX - can we just use NO_ADDR_B? Unfortunately, - * you currently still have to pass a non-null - * pointer for the second address argument even - * if you do that. - */ - conversation = find_conversation(pinfo->fd->num, &null_address, - &pinfo->dst, pinfo->ptype, pinfo->srcport, - pinfo->destport, 0); - } - if (conversation != NULL) - { - /* Look only for matching request, if - matching conversation is available. */ - mgcp_call_key.transid = mi->transid; - mgcp_call_key.conversation = conversation; - mgcp_call = g_hash_table_lookup(mgcp_calls, &mgcp_call_key); - if (mgcp_call) - { - /* Indicate the frame to which this is a reply. */ - if (mgcp_call->req_num) - { - proto_item* item; - mi->request_available = TRUE; - mgcp_call->responded = TRUE; - mi->req_num = mgcp_call->req_num; - strcpy(mi->code,mgcp_call->code); - item = proto_tree_add_uint_format(tree, hf_mgcp_req_frame, - tvb, 0, 0, mgcp_call->req_num, - "This is a response to a request in frame %u", - mgcp_call->req_num); - PROTO_ITEM_SET_GENERATED(item); - delta.secs= pinfo->fd->abs_secs-mgcp_call->req_time.secs; - delta.nsecs=pinfo->fd->abs_usecs*1000-mgcp_call->req_time.nsecs; - if (delta.nsecs<0) - { - delta.nsecs+=1000000000; - delta.secs--; - } - item = proto_tree_add_time(tree, hf_mgcp_time, tvb, 0, 0, &delta); - PROTO_ITEM_SET_GENERATED(item); - } - - if (mgcp_call->rsp_num == 0) - { - /* We have not yet seen a response to that call, so - this must be the first response; remember its - frame number. */ - mgcp_call->rsp_num = pinfo->fd->num; - } - else - { - /* We have seen a response to this call - but was it - *this* response? (disregard provisional responses) */ - if ((mgcp_call->rsp_num != pinfo->fd->num) && - (mi->rspcode >= 200) && - (mi->rspcode == mgcp_call->rspcode)) - { - /* No, so it's a duplicate response. Mark it as such. */ - mi->is_duplicate = TRUE; - if (check_col(pinfo->cinfo, COL_INFO)) - { - col_append_fstr(pinfo->cinfo, COL_INFO, - ", Duplicate Response %u", - mi->transid); - } - if (tree) - { - proto_item* item; - proto_tree_add_uint_hidden(tree, - hf_mgcp_dup, tvb, 0,0, mi->transid); - item = proto_tree_add_uint(tree, hf_mgcp_rsp_dup, - tvb, 0, 0, mi->transid); - PROTO_ITEM_SET_GENERATED(item); - } - } - } - /* Now store the response code (after comparison above) */ - mgcp_call->rspcode = mi->rspcode; - } - } - break; - case MGCP_REQUEST: - proto_tree_add_boolean_hidden(tree, hf_mgcp_req, tvb, 0, 0, TRUE); - /* Keep track of the address and port whence the call came, - and the port to which the call is being sent, so that - we can match up calls with replies. - - If the transport is connection-oriented (we check, for - now, only for "pinfo->ptype" of PT_TCP), we take - into account the address from which the call was sent - and the address to which the call was sent, because - the addresses of the two endpoints should be the same - for all calls and replies. - - If the transport is connectionless, we don't worry - about the address to which the call was sent and from - which the reply was sent, because there's no - guarantee that the reply will come from the address - to which the call was sent. - */ - if (pinfo->ptype == PT_TCP) - { - conversation = find_conversation(pinfo->fd->num, &pinfo->src, - &pinfo->dst, pinfo->ptype, pinfo->srcport, - pinfo->destport, 0); - } - else - { - /* - * XXX - can we just use NO_ADDR_B? Unfortunately, - * you currently still have to pass a non-null - * pointer for the second address argument even - * if you do that. - */ - conversation = find_conversation(pinfo->fd->num, &pinfo->src, - &null_address, pinfo->ptype, pinfo->srcport, - pinfo->destport, 0); - } - if (conversation == NULL) - { - /* It's not part of any conversation - create a new one. */ - if (pinfo->ptype == PT_TCP) - { - conversation = conversation_new(pinfo->fd->num, &pinfo->src, - &pinfo->dst, pinfo->ptype, pinfo->srcport, - pinfo->destport, 0); - } - else - { - conversation = conversation_new(pinfo->fd->num, &pinfo->src, - &null_address, pinfo->ptype, pinfo->srcport, - pinfo->destport, 0); - } - } - - /* Prepare the key data */ - mgcp_call_key.transid = mi->transid; - mgcp_call_key.conversation = conversation; - - /* Look up the request */ - mgcp_call = g_hash_table_lookup(mgcp_calls, &mgcp_call_key); - if (mgcp_call != NULL) - { - /* We've seen a request with this TRANSID, with the same - source and destination, before - but was it - *this* request? */ - if (pinfo->fd->num != mgcp_call->req_num) - { - /* No, so it's a duplicate request. Mark it as such. */ - mi->is_duplicate = TRUE; - mi->req_num = mgcp_call->req_num; - if (check_col(pinfo->cinfo, COL_INFO)) - { - col_append_fstr(pinfo->cinfo, COL_INFO, - ", Duplicate Request %u", - mi->transid); - } - if (tree) - { - proto_item* item; - proto_tree_add_uint_hidden(tree, - hf_mgcp_dup, tvb, 0,0, mi->transid); - item = proto_tree_add_uint(tree, hf_mgcp_req_dup, tvb, 0,0, mi->transid); - PROTO_ITEM_SET_GENERATED(item); - } - } - } - else - { - /* Prepare the value data. - "req_num" and "rsp_num" are frame numbers; - frame numbers are 1-origin, so we use 0 - to mean "we don't yet know in which frame - the reply for this call appears". */ - new_mgcp_call_key = g_mem_chunk_alloc(mgcp_call_info_key_chunk); - *new_mgcp_call_key = mgcp_call_key; - mgcp_call = g_mem_chunk_alloc(mgcp_call_info_value_chunk); - mgcp_call->req_num = pinfo->fd->num; - mgcp_call->rsp_num = 0; - mgcp_call->transid = mi->transid; - mgcp_call->responded = FALSE; - mgcp_call->req_time.secs=pinfo->fd->abs_secs; - mgcp_call->req_time.nsecs=pinfo->fd->abs_usecs*1000; - strcpy(mgcp_call->code,mi->code); - - /* Store it */ - g_hash_table_insert(mgcp_calls, new_mgcp_call_key, mgcp_call); - } - if (mgcp_call && mgcp_call->rsp_num) - { - proto_item* item = proto_tree_add_uint_format(tree, hf_mgcp_rsp_frame, - tvb, 0, 0, mgcp_call->rsp_num, - "The response to this request is in frame %u", - mgcp_call->rsp_num); - PROTO_ITEM_SET_GENERATED(item); - } - break; - default: - break; - } - - mi->mgcp_type = mgcp_type; - if (mgcp_call) - { - mi->req_time.secs=mgcp_call->req_time.secs; - mi->req_time.nsecs=mgcp_call->req_time.nsecs; - } - } - - tap_queue_packet(mgcp_tap, pinfo, mi); + gint tvb_current_offset,tvb_previous_offset,tvb_len,tvb_current_len; + gint tokennum, tokenlen; + char *transid = NULL; + char *code = NULL; + char *endpointId = NULL; + mgcp_type_t mgcp_type = MGCP_OTHERS; + conversation_t* conversation; + mgcp_call_info_key mgcp_call_key; + mgcp_call_info_key *new_mgcp_call_key = NULL; + mgcp_call_t *mgcp_call = NULL; + nstime_t delta; + gint rspcode = 0; + gchar *verb_description = ""; + char code_with_verb[64] = ""; /* To fit "<4-letter-code> (<longest-verb>)" */ + + static address null_address = { AT_NONE, 0, NULL }; + proto_item* (*my_proto_tree_add_string)(proto_tree*, int, tvbuff_t*, gint, gint, const char*); + tvb_previous_offset = 0; + tvb_len = tvb_length(tvb); + tvb_current_len = tvb_len; + tvb_current_offset = tvb_previous_offset; + mi->is_duplicate = FALSE; + mi->request_available = FALSE; + + if (tree) + { + tokennum = 0; + + if (global_mgcp_dissect_tree) + { + my_proto_tree_add_string = proto_tree_add_string; + } + else + { + my_proto_tree_add_string = proto_tree_add_string_hidden; + } + + do + { + tvb_current_len = tvb_length_remaining(tvb,tvb_previous_offset); + tvb_current_offset = tvb_find_guint8(tvb, tvb_previous_offset, tvb_current_len, ' '); + if (tvb_current_offset == -1) + { + tvb_current_offset = tvb_len; + tokenlen = tvb_current_len; + } + else + { + tokenlen = tvb_current_offset - tvb_previous_offset; + } + if (tokennum == 0) + { + code = tvb_format_text(tvb,tvb_previous_offset,tokenlen); + strncpy(mi->code,code,4); + mi->code[4] = '\0'; + if (is_mgcp_verb(tvb,tvb_previous_offset,tvb_current_len,&verb_description)) + { + mgcp_type = MGCP_REQUEST; + if (verb_description != NULL) + { + /* Can show verb along with code if known */ + sprintf(code_with_verb, "%s (%s)", code, verb_description); + } + + proto_tree_add_string_format(tree, hf_mgcp_req_verb, tvb, + tvb_previous_offset, tokenlen, + code, "%s", + strlen(code_with_verb) ? code_with_verb : code); + } + else + if (is_mgcp_rspcode(tvb,tvb_previous_offset,tvb_current_len)) + { + mgcp_type = MGCP_RESPONSE; + rspcode = atoi(code); + mi->rspcode = rspcode; + proto_tree_add_uint(tree,hf_mgcp_rsp_rspcode, tvb, + tvb_previous_offset, tokenlen, + rspcode); + + } + else + { + break; + } + } + if (tokennum == 1) + { + transid = tvb_format_text(tvb,tvb_previous_offset,tokenlen); + /* XXX - what if this isn't a valid text string? */ + mi->transid = atol(transid); + my_proto_tree_add_string(tree, hf_mgcp_transid, tvb, + tvb_previous_offset, tokenlen, + transid); + } + if (tokennum == 2) + { + if (mgcp_type == MGCP_REQUEST) + { + endpointId = tvb_format_text(tvb, tvb_previous_offset,tokenlen); + mi->endpointId = g_strdup(endpointId); + my_proto_tree_add_string(tree,hf_mgcp_req_endpoint, tvb, + tvb_previous_offset, tokenlen, + endpointId); + } + else + if (mgcp_type == MGCP_RESPONSE) + { + if (tvb_current_offset < tvb_len) + { + tokenlen = tvb_find_line_end(tvb, tvb_previous_offset, + -1, &tvb_current_offset, FALSE); + } + else + { + tokenlen = tvb_current_len; + } + my_proto_tree_add_string(tree, hf_mgcp_rsp_rspstring, tvb, + tvb_previous_offset, tokenlen, + tvb_format_text(tvb, tvb_previous_offset, + tokenlen)); + break; + } + } + + if ((tokennum == 3 && mgcp_type == MGCP_REQUEST)) + { + if (tvb_current_offset < tvb_len ) + { + tokenlen = tvb_find_line_end(tvb, tvb_previous_offset, + -1, &tvb_current_offset,FALSE); + } + else + { + tokenlen = tvb_current_len; + } + my_proto_tree_add_string(tree,hf_mgcp_version, tvb, + tvb_previous_offset, tokenlen, + tvb_format_text(tvb,tvb_previous_offset, + tokenlen)); + break; + } + if (tvb_current_offset < tvb_len) + { + tvb_previous_offset = tvb_skip_wsp(tvb, tvb_current_offset, + tvb_current_len); + } + tokennum++; + } while (tvb_current_offset < tvb_len && tvb_previous_offset < tvb_len && tokennum <= 3); + + switch (mgcp_type) + { + case MGCP_RESPONSE: + proto_tree_add_boolean_hidden(tree, hf_mgcp_rsp, tvb, 0, 0, TRUE); + /* Check for MGCP response. A response must match a call that + we've seen, and the response must be sent to the same + port and address that the call came from, and must + come from the port to which the call was sent. + + If the transport is connection-oriented (we check, for + now, only for "pinfo->ptype" of PT_TCP), we take + into account the address from which the call was sent + and the address to which the call was sent, because + the addresses of the two endpoints should be the same + for all calls and replies. + + If the transport is connectionless, we don't worry + about the address to which the call was sent and from + which the reply was sent, because there's no + guarantee that the reply will come from the address + to which the call was sent. */ + if (pinfo->ptype == PT_TCP) + { + conversation = find_conversation(pinfo->fd->num, &pinfo->src, + &pinfo->dst, pinfo->ptype, pinfo->srcport, + pinfo->destport, 0); + } + else + { + /* XXX - can we just use NO_ADDR_B? Unfortunately, + * you currently still have to pass a non-null + * pointer for the second address argument even + * if you do that. + */ + conversation = find_conversation(pinfo->fd->num, &null_address, + &pinfo->dst, pinfo->ptype, pinfo->srcport, + pinfo->destport, 0); + } + if (conversation != NULL) + { + /* Look only for matching request, if + matching conversation is available. */ + mgcp_call_key.transid = mi->transid; + mgcp_call_key.conversation = conversation; + mgcp_call = g_hash_table_lookup(mgcp_calls, &mgcp_call_key); + if (mgcp_call) + { + /* Indicate the frame to which this is a reply. */ + if (mgcp_call->req_num) + { + proto_item* item; + mi->request_available = TRUE; + mgcp_call->responded = TRUE; + mi->req_num = mgcp_call->req_num; + strcpy(mi->code,mgcp_call->code); + item = proto_tree_add_uint_format(tree, hf_mgcp_req_frame, + tvb, 0, 0, mgcp_call->req_num, + "This is a response to a request in frame %u", + mgcp_call->req_num); + PROTO_ITEM_SET_GENERATED(item); + delta.secs= pinfo->fd->abs_secs-mgcp_call->req_time.secs; + delta.nsecs=pinfo->fd->abs_usecs*1000-mgcp_call->req_time.nsecs; + if (delta.nsecs<0) + { + delta.nsecs+=1000000000; + delta.secs--; + } + item = proto_tree_add_time(tree, hf_mgcp_time, tvb, 0, 0, &delta); + PROTO_ITEM_SET_GENERATED(item); + } + + if (mgcp_call->rsp_num == 0) + { + /* We have not yet seen a response to that call, so + this must be the first response; remember its + frame number. */ + mgcp_call->rsp_num = pinfo->fd->num; + } + else + { + /* We have seen a response to this call - but was it + *this* response? (disregard provisional responses) */ + if ((mgcp_call->rsp_num != pinfo->fd->num) && + (mi->rspcode >= 200) && + (mi->rspcode == mgcp_call->rspcode)) + { + /* No, so it's a duplicate response. Mark it as such. */ + mi->is_duplicate = TRUE; + if (check_col(pinfo->cinfo, COL_INFO)) + { + col_append_fstr(pinfo->cinfo, COL_INFO, + ", Duplicate Response %u", + mi->transid); + } + if (tree) + { + proto_item* item; + proto_tree_add_uint_hidden(tree, hf_mgcp_dup, tvb, 0,0, mi->transid); + item = proto_tree_add_uint(tree, hf_mgcp_rsp_dup, + tvb, 0, 0, mi->transid); + PROTO_ITEM_SET_GENERATED(item); + } + } + } + /* Now store the response code (after comparison above) */ + mgcp_call->rspcode = mi->rspcode; + } + } + break; + case MGCP_REQUEST: + proto_tree_add_boolean_hidden(tree, hf_mgcp_req, tvb, 0, 0, TRUE); + /* Keep track of the address and port whence the call came, + * and the port to which the call is being sent, so that + * we can match up calls with replies. + * + * If the transport is connection-oriented (we check, for + * now, only for "pinfo->ptype" of PT_TCP), we take + * into account the address from which the call was sent + * and the address to which the call was sent, because + * the addresses of the two endpoints should be the same + * for all calls and replies. + * + * If the transport is connectionless, we don't worry + * about the address to which the call was sent and from + * which the reply was sent, because there's no + * guarantee that the reply will come from the address + * to which the call was sent. + */ + if (pinfo->ptype == PT_TCP) + { + conversation = find_conversation(pinfo->fd->num, &pinfo->src, + &pinfo->dst, pinfo->ptype, pinfo->srcport, + pinfo->destport, 0); + } + else + { + /* + * XXX - can we just use NO_ADDR_B? Unfortunately, + * you currently still have to pass a non-null + * pointer for the second address argument even + * if you do that. + */ + conversation = find_conversation(pinfo->fd->num, &pinfo->src, + &null_address, pinfo->ptype, pinfo->srcport, + pinfo->destport, 0); + } + if (conversation == NULL) + { + /* It's not part of any conversation - create a new one. */ + if (pinfo->ptype == PT_TCP) + { + conversation = conversation_new(pinfo->fd->num, &pinfo->src, + &pinfo->dst, pinfo->ptype, pinfo->srcport, + pinfo->destport, 0); + } + else + { + conversation = conversation_new(pinfo->fd->num, &pinfo->src, + &null_address, pinfo->ptype, pinfo->srcport, + pinfo->destport, 0); + } + } + + /* Prepare the key data */ + mgcp_call_key.transid = mi->transid; + mgcp_call_key.conversation = conversation; + + /* Look up the request */ + mgcp_call = g_hash_table_lookup(mgcp_calls, &mgcp_call_key); + if (mgcp_call != NULL) + { + /* We've seen a request with this TRANSID, with the same + source and destination, before - but was it + *this* request? */ + if (pinfo->fd->num != mgcp_call->req_num) + { + /* No, so it's a duplicate request. Mark it as such. */ + mi->is_duplicate = TRUE; + mi->req_num = mgcp_call->req_num; + if (check_col(pinfo->cinfo, COL_INFO)) + { + col_append_fstr(pinfo->cinfo, COL_INFO, + ", Duplicate Request %u", + mi->transid); + } + if (tree) + { + proto_item* item; + proto_tree_add_uint_hidden(tree, hf_mgcp_dup, tvb, 0,0, mi->transid); + item = proto_tree_add_uint(tree, hf_mgcp_req_dup, tvb, 0,0, mi->transid); + PROTO_ITEM_SET_GENERATED(item); + } + } + } + else + { + /* Prepare the value data. + "req_num" and "rsp_num" are frame numbers; + frame numbers are 1-origin, so we use 0 + to mean "we don't yet know in which frame + the reply for this call appears". */ + new_mgcp_call_key = g_mem_chunk_alloc(mgcp_call_info_key_chunk); + *new_mgcp_call_key = mgcp_call_key; + mgcp_call = g_mem_chunk_alloc(mgcp_call_info_value_chunk); + mgcp_call->req_num = pinfo->fd->num; + mgcp_call->rsp_num = 0; + mgcp_call->transid = mi->transid; + mgcp_call->responded = FALSE; + mgcp_call->req_time.secs=pinfo->fd->abs_secs; + mgcp_call->req_time.nsecs=pinfo->fd->abs_usecs*1000; + strcpy(mgcp_call->code,mi->code); + + /* Store it */ + g_hash_table_insert(mgcp_calls, new_mgcp_call_key, mgcp_call); + } + if (mgcp_call && mgcp_call->rsp_num) + { + proto_item* item = proto_tree_add_uint_format(tree, hf_mgcp_rsp_frame, + tvb, 0, 0, mgcp_call->rsp_num, + "The response to this request is in frame %u", + mgcp_call->rsp_num); + PROTO_ITEM_SET_GENERATED(item); + } + break; + default: + break; + } + + mi->mgcp_type = mgcp_type; + if (mgcp_call) + { + mi->req_time.secs=mgcp_call->req_time.secs; + mi->req_time.nsecs=mgcp_call->req_time.nsecs; + } + } + + tap_queue_packet(mgcp_tap, pinfo, mi); } /* @@ -1616,194 +1614,194 @@ static void dissect_mgcp_firstline(tvbuff_t *tvb, packet_info *pinfo, proto_tree */ static void dissect_mgcp_params(tvbuff_t *tvb, proto_tree *tree) { - int linelen, tokenlen, *my_param; - gint tvb_lineend,tvb_current_len, tvb_linebegin,tvb_len,old_lineend; - gint tvb_tokenbegin; - proto_tree *mgcp_param_ti, *mgcp_param_tree; - proto_item* (*my_proto_tree_add_string)(proto_tree*, int, tvbuff_t*, gint, - gint, const char*); - - tvb_len = tvb_length(tvb); - tvb_linebegin = 0; - tvb_current_len = tvb_length_remaining(tvb,tvb_linebegin); - tvb_lineend = tvb_linebegin; - - if (tree) - { - if (global_mgcp_dissect_tree) - { - my_proto_tree_add_string = proto_tree_add_string; - mgcp_param_ti = proto_tree_add_item(tree, hf_mgcp_params, tvb, - tvb_linebegin, tvb_len, FALSE); - proto_item_set_text(mgcp_param_ti, "Parameters"); - mgcp_param_tree = proto_item_add_subtree(mgcp_param_ti, ett_mgcp_param); - } - else - { - my_proto_tree_add_string = proto_tree_add_string_hidden; - mgcp_param_tree = tree; - mgcp_param_ti = NULL; - } - - /* Parse the parameters */ - while (tvb_lineend < tvb_len) - { - old_lineend = tvb_lineend; - linelen = tvb_find_line_end(tvb, tvb_linebegin, -1,&tvb_lineend,FALSE); - tvb_tokenbegin = tvb_parse_param(tvb, tvb_linebegin, linelen, &my_param); - - if (my_param) - { - if (*my_param == hf_mgcp_param_connectionparam) - { - tokenlen = tvb_find_line_end(tvb,tvb_tokenbegin,-1,&tvb_lineend,FALSE); - dissect_mgcp_connectionparams(mgcp_param_tree, tvb, tvb_linebegin, - tvb_tokenbegin - tvb_linebegin, tokenlen); - } - else - { - tokenlen = tvb_find_line_end(tvb,tvb_tokenbegin,-1,&tvb_lineend,FALSE); - my_proto_tree_add_string(mgcp_param_tree,*my_param, tvb, - tvb_linebegin, linelen, - tvb_format_text(tvb,tvb_tokenbegin, tokenlen)); - } - } - - tvb_linebegin = tvb_lineend; - /* Its a infinite loop if we didn't advance (or went backwards) */ - if (old_lineend >= tvb_lineend) - { - THROW(ReportedBoundsError); - } - } - } + int linelen, tokenlen, *my_param; + gint tvb_lineend,tvb_current_len, tvb_linebegin,tvb_len,old_lineend; + gint tvb_tokenbegin; + proto_tree *mgcp_param_ti, *mgcp_param_tree; + proto_item* (*my_proto_tree_add_string)(proto_tree*, int, tvbuff_t*, gint, + gint, const char*); + + tvb_len = tvb_length(tvb); + tvb_linebegin = 0; + tvb_current_len = tvb_length_remaining(tvb,tvb_linebegin); + tvb_lineend = tvb_linebegin; + + if (tree) + { + if (global_mgcp_dissect_tree) + { + my_proto_tree_add_string = proto_tree_add_string; + mgcp_param_ti = proto_tree_add_item(tree, hf_mgcp_params, tvb, + tvb_linebegin, tvb_len, FALSE); + proto_item_set_text(mgcp_param_ti, "Parameters"); + mgcp_param_tree = proto_item_add_subtree(mgcp_param_ti, ett_mgcp_param); + } + else + { + my_proto_tree_add_string = proto_tree_add_string_hidden; + mgcp_param_tree = tree; + mgcp_param_ti = NULL; + } + + /* Parse the parameters */ + while (tvb_lineend < tvb_len) + { + old_lineend = tvb_lineend; + linelen = tvb_find_line_end(tvb, tvb_linebegin, -1,&tvb_lineend,FALSE); + tvb_tokenbegin = tvb_parse_param(tvb, tvb_linebegin, linelen, &my_param); + + if (my_param) + { + if (*my_param == hf_mgcp_param_connectionparam) + { + tokenlen = tvb_find_line_end(tvb,tvb_tokenbegin,-1,&tvb_lineend,FALSE); + dissect_mgcp_connectionparams(mgcp_param_tree, tvb, tvb_linebegin, + tvb_tokenbegin - tvb_linebegin, tokenlen); + } + else + { + tokenlen = tvb_find_line_end(tvb,tvb_tokenbegin,-1,&tvb_lineend,FALSE); + my_proto_tree_add_string(mgcp_param_tree,*my_param, tvb, + tvb_linebegin, linelen, + tvb_format_text(tvb,tvb_tokenbegin, tokenlen)); + } + } + + tvb_linebegin = tvb_lineend; + /* Its a infinite loop if we didn't advance (or went backwards) */ + if (old_lineend >= tvb_lineend) + { + THROW(ReportedBoundsError); + } + } + } } static void dissect_mgcp_connectionparams(proto_tree *parent_tree, tvbuff_t *tvb, gint offset, gint param_type_len, gint param_val_len) { - proto_tree *tree = parent_tree; - proto_item *item = NULL; - proto_item* (*my_proto_tree_add_uint)(proto_tree*, int, tvbuff_t*, gint, gint, guint32) = NULL; - proto_item* (*my_proto_tree_add_string)(proto_tree*, int, tvbuff_t*, gint, gint, const char*) = NULL; - proto_item* (*my_proto_tree_add_text)(proto_tree*, tvbuff_t*, gint, gint, const char *, ...) = NULL; - - gchar *tokenline = NULL; - gchar **tokens = NULL; - gchar **typval = NULL; - guint i = 0; - guint tokenlen = 0; - int hf_uint = -1; - int hf_string = -1; - - if (parent_tree) - { - if (global_mgcp_dissect_tree) - { - my_proto_tree_add_uint = proto_tree_add_uint; - my_proto_tree_add_string = proto_tree_add_string; - my_proto_tree_add_text = proto_tree_add_text; - item = proto_tree_add_item(parent_tree, hf_mgcp_param_connectionparam, tvb, offset, param_type_len+param_val_len, FALSE); - tree = proto_item_add_subtree(item, ett_mgcp_param_connectionparam); - } - else - { - my_proto_tree_add_uint = proto_tree_add_uint_hidden; - my_proto_tree_add_string = proto_tree_add_string_hidden; - my_proto_tree_add_text = NULL; - } - } - /* The P: line */ - offset += param_type_len; /* skip the P: */ - tokenline = tvb_get_string(tvb, offset, param_val_len); - - /* Split into type=value pairs separated by comma */ - tokens = g_strsplit(tokenline, ",", -1); - for (i = 0; tokens[i] != NULL; i++) - { - tokenlen = strlen(tokens[i]); - typval = g_strsplit(tokens[i], "=", 2); - if ((typval[0] != NULL) && (typval[1] != NULL)) - { - if (!strcasecmp(g_strstrip(typval[0]), "PS")) - { - hf_uint = hf_mgcp_param_connectionparam_ps; - } - else if (!strcasecmp(g_strstrip(typval[0]), "OS")) - { - hf_uint = hf_mgcp_param_connectionparam_os; - } - else if (!strcasecmp(g_strstrip(typval[0]), "PR")) - { - hf_uint = hf_mgcp_param_connectionparam_pr; - } - else if (!strcasecmp(g_strstrip(typval[0]), "OR")) - { - hf_uint = hf_mgcp_param_connectionparam_or; - } - else if (!strcasecmp(g_strstrip(typval[0]), "PL")) - { - hf_uint = hf_mgcp_param_connectionparam_pl; - } - else if (!strcasecmp(g_strstrip(typval[0]), "JI")) - { - hf_uint = hf_mgcp_param_connectionparam_ji; - } - else if (!strcasecmp(g_strstrip(typval[0]), "LA")) - { - hf_uint = hf_mgcp_param_connectionparam_la; - } - else if (!strcasecmp(g_strstrip(typval[0]), "PC/RPS")) - { - hf_uint = hf_mgcp_param_connectionparam_pcrps; - } else if (!strcasecmp(g_strstrip(typval[0]), "PC/ROS")) - { - hf_uint = hf_mgcp_param_connectionparam_pcros; - } - else if (!strcasecmp(g_strstrip(typval[0]), "PC/RPL")) - { - hf_uint = hf_mgcp_param_connectionparam_pcrpl; - } - else if (!strcasecmp(g_strstrip(typval[0]), "PC/RJI")) - { - hf_uint = hf_mgcp_param_connectionparam_pcrji; - } - else if (!strncasecmp(g_strstrip(typval[0]), "X-", 2)) - { - hf_string = hf_mgcp_param_connectionparam_x; - } - else - { - hf_uint = -1; - hf_string = -1; - } - - if (hf_uint != -1) - { - if (my_proto_tree_add_uint) - my_proto_tree_add_uint(tree, hf_uint, tvb, offset, tokenlen, atol(typval[1])); - } - else if (hf_string != -1) - { - if (my_proto_tree_add_string) - my_proto_tree_add_string(tree, hf_string, tvb, offset, tokenlen, g_strstrip(typval[1])); - } - else - { - if (my_proto_tree_add_text) - proto_tree_add_text(tree, tvb, offset, tokenlen, "Unknown parameter: %s", tokens[i]); - } - } - else { - if (my_proto_tree_add_text) - proto_tree_add_text(tree, tvb, offset, tokenlen, "Malformed parameter: %s", tokens[i]); - } - offset += tokenlen + 1; /* 1 extra for the delimiter */ - } - - g_strfreev(typval); - g_strfreev(tokens); - g_free(tokenline); + proto_tree *tree = parent_tree; + proto_item *item = NULL; + proto_item* (*my_proto_tree_add_uint)(proto_tree*, int, tvbuff_t*, gint, gint, guint32) = NULL; + proto_item* (*my_proto_tree_add_string)(proto_tree*, int, tvbuff_t*, gint, gint, const char*) = NULL; + proto_item* (*my_proto_tree_add_text)(proto_tree*, tvbuff_t*, gint, gint, const char *, ...) = NULL; + + gchar *tokenline = NULL; + gchar **tokens = NULL; + gchar **typval = NULL; + guint i = 0; + guint tokenlen = 0; + int hf_uint = -1; + int hf_string = -1; + + if (parent_tree) + { + if (global_mgcp_dissect_tree) + { + my_proto_tree_add_uint = proto_tree_add_uint; + my_proto_tree_add_string = proto_tree_add_string; + my_proto_tree_add_text = proto_tree_add_text; + item = proto_tree_add_item(parent_tree, hf_mgcp_param_connectionparam, tvb, offset, param_type_len+param_val_len, FALSE); + tree = proto_item_add_subtree(item, ett_mgcp_param_connectionparam); + } + else + { + my_proto_tree_add_uint = proto_tree_add_uint_hidden; + my_proto_tree_add_string = proto_tree_add_string_hidden; + my_proto_tree_add_text = NULL; + } + } + /* The P: line */ + offset += param_type_len; /* skip the P: */ + tokenline = tvb_get_string(tvb, offset, param_val_len); + + /* Split into type=value pairs separated by comma */ + tokens = g_strsplit(tokenline, ",", -1); + for (i = 0; tokens[i] != NULL; i++) + { + tokenlen = strlen(tokens[i]); + typval = g_strsplit(tokens[i], "=", 2); + if ((typval[0] != NULL) && (typval[1] != NULL)) + { + if (!strcasecmp(g_strstrip(typval[0]), "PS")) + { + hf_uint = hf_mgcp_param_connectionparam_ps; + } + else if (!strcasecmp(g_strstrip(typval[0]), "OS")) + { + hf_uint = hf_mgcp_param_connectionparam_os; + } + else if (!strcasecmp(g_strstrip(typval[0]), "PR")) + { + hf_uint = hf_mgcp_param_connectionparam_pr; + } + else if (!strcasecmp(g_strstrip(typval[0]), "OR")) + { + hf_uint = hf_mgcp_param_connectionparam_or; + } + else if (!strcasecmp(g_strstrip(typval[0]), "PL")) + { + hf_uint = hf_mgcp_param_connectionparam_pl; + } + else if (!strcasecmp(g_strstrip(typval[0]), "JI")) + { + hf_uint = hf_mgcp_param_connectionparam_ji; + } + else if (!strcasecmp(g_strstrip(typval[0]), "LA")) + { + hf_uint = hf_mgcp_param_connectionparam_la; + } + else if (!strcasecmp(g_strstrip(typval[0]), "PC/RPS")) + { + hf_uint = hf_mgcp_param_connectionparam_pcrps; + } else if (!strcasecmp(g_strstrip(typval[0]), "PC/ROS")) + { + hf_uint = hf_mgcp_param_connectionparam_pcros; + } + else if (!strcasecmp(g_strstrip(typval[0]), "PC/RPL")) + { + hf_uint = hf_mgcp_param_connectionparam_pcrpl; + } + else if (!strcasecmp(g_strstrip(typval[0]), "PC/RJI")) + { + hf_uint = hf_mgcp_param_connectionparam_pcrji; + } + else if (!strncasecmp(g_strstrip(typval[0]), "X-", 2)) + { + hf_string = hf_mgcp_param_connectionparam_x; + } + else + { + hf_uint = -1; + hf_string = -1; + } + + if (hf_uint != -1) + { + if (my_proto_tree_add_uint) + my_proto_tree_add_uint(tree, hf_uint, tvb, offset, tokenlen, atol(typval[1])); + } + else if (hf_string != -1) + { + if (my_proto_tree_add_string) + my_proto_tree_add_string(tree, hf_string, tvb, offset, tokenlen, g_strstrip(typval[1])); + } + else + { + if (my_proto_tree_add_text) + proto_tree_add_text(tree, tvb, offset, tokenlen, "Unknown parameter: %s", tokens[i]); + } + } + else { + if (my_proto_tree_add_text) + proto_tree_add_text(tree, tvb, offset, tokenlen, "Malformed parameter: %s", tokens[i]); + } + offset += tokenlen + 1; /* 1 extra for the delimiter */ + } + + g_strfreev(typval); + g_strfreev(tokens); + g_free(tokenline); } @@ -1824,26 +1822,26 @@ dissect_mgcp_connectionparams(proto_tree *parent_tree, tvbuff_t *tvb, gint offse */ static gint tvb_skip_wsp(tvbuff_t* tvb, gint offset, gint maxlength) { - gint counter = offset; - gint end = offset + maxlength,tvb_len; - guint8 tempchar; - - /* Get the length remaining */ - tvb_len = tvb_length(tvb); - end = offset + maxlength; - if (end >= tvb_len) - { - end = tvb_len; - } - - /* Skip past spaces and tabs until run out or meet something else */ - for (counter = offset; - counter < end && - ((tempchar = tvb_get_guint8(tvb,counter)) == ' ' || - tempchar == '\t'); - counter++); - - return (counter); + gint counter = offset; + gint end = offset + maxlength,tvb_len; + guint8 tempchar; + + /* Get the length remaining */ + tvb_len = tvb_length(tvb); + end = offset + maxlength; + if (end >= tvb_len) + { + end = tvb_len; + } + + /* Skip past spaces and tabs until run out or meet something else */ + for (counter = offset; + counter < end && + ((tempchar = tvb_get_guint8(tvb,counter)) == ' ' || + tempchar == '\t'); + counter++); + + return (counter); } /* @@ -1868,47 +1866,47 @@ static gint tvb_skip_wsp(tvbuff_t* tvb, gint offset, gint maxlength) */ static gint tvb_find_null_line(tvbuff_t* tvb, gint offset, gint len, gint* next_offset) { - gint tvb_lineend,tvb_current_len,tvb_linebegin,maxoffset; - guint tempchar; - - tvb_linebegin = offset; - tvb_lineend = tvb_linebegin; - - /* Simple setup to allow for the traditional -1 search to the end of the tvbuff */ - if (len != -1) - { - tvb_current_len = len; - } - else - { - tvb_current_len = tvb_length_remaining(tvb,offset); - } - - maxoffset = (tvb_current_len - 1) + offset; - - /* Loop around until we either find a line begining with a carriage return - or newline character or until we hit the end of the tvbuff. */ - do - { - tvb_linebegin = tvb_lineend; - tvb_current_len = tvb_length_remaining(tvb,tvb_linebegin); - tvb_find_line_end(tvb, tvb_linebegin, tvb_current_len, &tvb_lineend,FALSE); - tempchar = tvb_get_guint8(tvb,tvb_linebegin); - } while (tempchar != '\r' && tempchar != '\n' && tvb_lineend <= maxoffset); - - - *next_offset = tvb_lineend; - - if (tvb_lineend <= maxoffset) - { - tvb_current_len = tvb_linebegin - offset; - } - else - { - tvb_current_len = tvb_length_remaining(tvb,offset); - } - - return tvb_current_len; + gint tvb_lineend,tvb_current_len,tvb_linebegin,maxoffset; + guint tempchar; + + tvb_linebegin = offset; + tvb_lineend = tvb_linebegin; + + /* Simple setup to allow for the traditional -1 search to the end of the tvbuff */ + if (len != -1) + { + tvb_current_len = len; + } + else + { + tvb_current_len = tvb_length_remaining(tvb,offset); + } + + maxoffset = (tvb_current_len - 1) + offset; + + /* Loop around until we either find a line begining with a carriage return + or newline character or until we hit the end of the tvbuff. */ + do + { + tvb_linebegin = tvb_lineend; + tvb_current_len = tvb_length_remaining(tvb,tvb_linebegin); + tvb_find_line_end(tvb, tvb_linebegin, tvb_current_len, &tvb_lineend,FALSE); + tempchar = tvb_get_guint8(tvb,tvb_linebegin); + } while (tempchar != '\r' && tempchar != '\n' && tvb_lineend <= maxoffset); + + + *next_offset = tvb_lineend; + + if (tvb_lineend <= maxoffset) + { + tvb_current_len = tvb_linebegin - offset; + } + else + { + tvb_current_len = tvb_length_remaining(tvb,offset); + } + + return tvb_current_len; } /* @@ -1934,102 +1932,102 @@ static gint tvb_find_null_line(tvbuff_t* tvb, gint offset, gint len, gint* next_ */ static gint tvb_find_dot_line(tvbuff_t* tvb, gint offset, gint len, gint* next_offset) { - gint tvb_current_offset, tvb_current_len, maxoffset,tvb_len; - guint8 tempchar; - tvb_current_offset = offset; - tvb_current_len = len; - tvb_len = tvb_length(tvb); - - if (len == -1) - { - maxoffset = tvb_len - 1; - } - else - { - maxoffset = (len - 1) + offset; - } - tvb_current_offset = offset -1; - - do - { - tvb_current_offset = tvb_find_guint8(tvb, tvb_current_offset+1, - tvb_current_len, '.'); - tvb_current_len = maxoffset - tvb_current_offset + 1; - - /* If we didn't find a . then break out of the loop */ - if (tvb_current_offset == -1) - { - break; - } - - /* Do we have and characters following the . ? */ - if (tvb_current_offset < maxoffset) - { - tempchar = tvb_get_guint8(tvb,tvb_current_offset+1); - /* Are the characters that follow the dot a newline or carriage return ? */ - if (tempchar == '\r' || tempchar == '\n') - { - /* Do we have any charaters that proceed the . ? */ - if (tvb_current_offset == 0) - { - break; - } - else - { - tempchar = tvb_get_guint8(tvb,tvb_current_offset-1); - - /* Are the characters that follow the dot a newline or a - carriage return ? */ - if (tempchar == '\r' || tempchar == '\n') - { - break; - } - } - } - } - else - if (tvb_current_offset == maxoffset) - { - if (tvb_current_offset == 0) - { - break; - } - else - { - tempchar = tvb_get_guint8(tvb,tvb_current_offset-1); - if (tempchar == '\r' || tempchar == '\n') - { - break; - } - } - } - } while (tvb_current_offset < maxoffset); - - - /* - * So now we either have the tvb_current_offset of a . in a dot line - * or a tvb_current_offset of -1 - */ - if (tvb_current_offset == -1) - { - tvb_current_offset = maxoffset +1; - *next_offset = maxoffset + 1; - } - else - { - tvb_find_line_end(tvb,tvb_current_offset,tvb_current_len,next_offset,FALSE); - } - - if (tvb_current_offset == offset) - { - tvb_current_len = -1; - } - else - { - tvb_current_len = tvb_current_offset - offset; - } - - return tvb_current_len; + gint tvb_current_offset, tvb_current_len, maxoffset,tvb_len; + guint8 tempchar; + tvb_current_offset = offset; + tvb_current_len = len; + tvb_len = tvb_length(tvb); + + if (len == -1) + { + maxoffset = tvb_len - 1; + } + else + { + maxoffset = (len - 1) + offset; + } + tvb_current_offset = offset -1; + + do + { + tvb_current_offset = tvb_find_guint8(tvb, tvb_current_offset+1, + tvb_current_len, '.'); + tvb_current_len = maxoffset - tvb_current_offset + 1; + + /* If we didn't find a . then break out of the loop */ + if (tvb_current_offset == -1) + { + break; + } + + /* Do we have and characters following the . ? */ + if (tvb_current_offset < maxoffset) + { + tempchar = tvb_get_guint8(tvb,tvb_current_offset+1); + /* Are the characters that follow the dot a newline or carriage return ? */ + if (tempchar == '\r' || tempchar == '\n') + { + /* Do we have any charaters that proceed the . ? */ + if (tvb_current_offset == 0) + { + break; + } + else + { + tempchar = tvb_get_guint8(tvb,tvb_current_offset-1); + + /* Are the characters that follow the dot a newline or a + carriage return ? */ + if (tempchar == '\r' || tempchar == '\n') + { + break; + } + } + } + } + else + if (tvb_current_offset == maxoffset) + { + if (tvb_current_offset == 0) + { + break; + } + else + { + tempchar = tvb_get_guint8(tvb,tvb_current_offset-1); + if (tempchar == '\r' || tempchar == '\n') + { + break; + } + } + } + } while (tvb_current_offset < maxoffset); + + + /* + * So now we either have the tvb_current_offset of a . in a dot line + * or a tvb_current_offset of -1 + */ + if (tvb_current_offset == -1) + { + tvb_current_offset = maxoffset +1; + *next_offset = maxoffset + 1; + } + else + { + tvb_find_line_end(tvb,tvb_current_offset,tvb_current_len,next_offset,FALSE); + } + + if (tvb_current_offset == offset) + { + tvb_current_len = -1; + } + else + { + tvb_current_len = tvb_current_offset - offset; + } + + return tvb_current_len; } /* Start the functions we need for the plugin stuff */ @@ -2039,18 +2037,18 @@ static gint tvb_find_dot_line(tvbuff_t* tvb, gint offset, gint len, gint* next_o G_MODULE_EXPORT void plugin_register(void) { - /* Register the new protocol, protocol fields, and subtrees */ - if (proto_mgcp == -1) - { - /* Execute protocol initialization only once */ - proto_register_mgcp(); - } + /* Register the new protocol, protocol fields, and subtrees */ + if (proto_mgcp == -1) + { + /* Execute protocol initialization only once */ + proto_register_mgcp(); + } } G_MODULE_EXPORT void plugin_reg_handoff(void) { - proto_reg_handoff_mgcp(); + proto_reg_handoff_mgcp(); } #endif diff --git a/plugins/mgcp/packet-mgcp.h b/plugins/mgcp/packet-mgcp.h index 1fa5157e04..b98b06a7a6 100644 --- a/plugins/mgcp/packet-mgcp.h +++ b/plugins/mgcp/packet-mgcp.h @@ -28,37 +28,37 @@ /* A simple MGCP type that is occasionally handy */ typedef enum _mgcp_type { - MGCP_REQUEST, - MGCP_RESPONSE, - MGCP_OTHERS + MGCP_REQUEST, + MGCP_RESPONSE, + MGCP_OTHERS } mgcp_type_t; /* Container for tapping relevant data */ typedef struct _mgcp_info_t { - mgcp_type_t mgcp_type; - char code[5]; - guint32 transid; - nstime_t req_time; - gboolean is_duplicate; - gboolean request_available; - guint32 req_num; /* frame number request seen */ - gchar *endpointId; - gchar *observedEvents; - guint32 rspcode; - gchar *signalReq; - gboolean hasDigitMap; + mgcp_type_t mgcp_type; + char code[5]; + guint32 transid; + nstime_t req_time; + gboolean is_duplicate; + gboolean request_available; + guint32 req_num; /* frame number request seen */ + gchar *endpointId; + gchar *observedEvents; + guint32 rspcode; + gchar *signalReq; + gboolean hasDigitMap; } mgcp_info_t; /* Item of request list */ typedef struct _mgcp_call_t { - guint32 transid; - char code[5]; - guint32 req_num; /* frame number request seen */ - guint32 rsp_num; /* frame number response seen */ - guint32 rspcode; - nstime_t req_time; - gboolean responded; + guint32 transid; + char code[5]; + guint32 req_num; /* frame number request seen */ + guint32 rsp_num; /* frame number response seen */ + guint32 rspcode; + nstime_t req_time; + gboolean responded; } mgcp_call_t; |