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sharkd_session.c
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/* sharkd_session.c
*
* Copyright (C) 2016 Jakub Zawadzki
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <[email protected]>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <inttypes.h>
#include <glib.h>
#include <wsutil/wsjson.h>
#include <wsutil/json_dumper.h>
#include <wsutil/ws_assert.h>
#include <wsutil/wsgcrypt.h>
#include <file.h>
#include <epan/epan_dissect.h>
#include <epan/exceptions.h>
#include <epan/color_filters.h>
#include <epan/prefs.h>
#include <epan/prefs-int.h>
#include <epan/uat-int.h>
#include <wiretap/wtap.h>
#include <epan/column.h>
#include <epan/column-info.h>
#include <ui/ssl_key_export.h>
#include <ui/io_graph_item.h>
#include <epan/stats_tree_priv.h>
#include <epan/stat_tap_ui.h>
#include <epan/conversation_table.h>
#include <epan/sequence_analysis.h>
#include <epan/expert.h>
#include <epan/export_object.h>
#include <epan/follow.h>
#include <epan/rtd_table.h>
#include <epan/srt_table.h>
#include <epan/to_str.h>
#include <epan/dissectors/packet-h225.h>
#include <epan/rtp_pt.h>
#include <ui/voip_calls.h>
#include <ui/rtp_stream.h>
#include <ui/tap-rtp-common.h>
#include <ui/tap-rtp-analysis.h>
#include <ui/cli/tap-protohierstat.h>
#include <ui/cli/tap-voip.h>
#include <wsutil/version_info.h>
#include <epan/to_str.h>
#include <epan/addr_resolv.h>
#include <epan/dissectors/packet-rtp.h>
#include <ui/rtp_media.h>
#include <ui/mcast_stream.h>
#include <speex/speex_resampler.h>
#include <epan/maxmind_db.h>
#include <wsutil/pint.h>
#include <wsutil/strnatcmp.h>
#include <wsutil/strtoi.h>
#include "globals.h"
#include "sharkd.h"
struct sharkd_filter_item
{
uint8_t *filtered; /* can be NULL if all frames are matching for given filter. */
};
static GHashTable *filter_table;
static int mode;
static uint32_t rpcid;
static json_dumper dumper;
static const char *
json_find_attr(const char *buf, const jsmntok_t *tokens, int count, const char *attr)
{
int i;
for (i = 0; i < count; i += 2)
{
const char *tok_attr = &buf[tokens[i + 0].start];
const char *tok_value = &buf[tokens[i + 1].start];
if (!strcmp(tok_attr, attr))
return tok_value;
}
return NULL;
}
static void
json_print_base64(const uint8_t *data, size_t len)
{
json_dumper_begin_base64(&dumper);
json_dumper_write_base64(&dumper, data, len);
json_dumper_end_base64(&dumper);
}
static void G_GNUC_PRINTF(2, 3)
sharkd_json_value_anyf(const char *key, const char *format, ...)
{
if (key)
json_dumper_set_member_name(&dumper, key);
va_list ap;
va_start(ap, format);
json_dumper_value_va_list(&dumper, format, ap);
va_end(ap);
}
static void
sharkd_json_value_string(const char *key, const char *str)
{
if (key)
json_dumper_set_member_name(&dumper, key);
json_dumper_value_string(&dumper, str);
}
static void
sharkd_json_value_base64(const char *key, const uint8_t *data, size_t len)
{
if (key)
json_dumper_set_member_name(&dumper, key);
json_print_base64(data, len);
}
static void G_GNUC_PRINTF(2, 3)
sharkd_json_value_stringf(const char *key, const char *format, ...)
{
if (key)
json_dumper_set_member_name(&dumper, key);
va_list ap;
va_start(ap, format);
char* sformat = ws_strdup_printf("\"%s\"", format);
json_dumper_value_va_list(&dumper, sformat, ap);
g_free(sformat);
va_end(ap);
}
static void
sharkd_json_array_open(const char *key)
{
if (key)
json_dumper_set_member_name(&dumper, key);
json_dumper_begin_array(&dumper);
}
static void
sharkd_json_array_close(void)
{
json_dumper_end_array(&dumper);
}
static void
sharkd_json_object_open(const char *key)
{
if (key)
json_dumper_set_member_name(&dumper, key);
json_dumper_begin_object(&dumper);
}
static void
sharkd_json_object_close(void)
{
json_dumper_end_object(&dumper);
}
static void
sharkd_json_response_open(uint32_t id)
{
json_dumper_begin_object(&dumper); // start the message
sharkd_json_value_string("jsonrpc", "2.0");
sharkd_json_value_anyf("id", "%d", id);
}
static void
sharkd_json_response_close(void)
{
json_dumper_end_object(&dumper); // end the message
json_dumper_finish(&dumper);
/*
* We do an explicit fflush after every line, because
* we want output to be written to the socket as soon
* as the line is complete.
*
* The stream is fully-buffered by default, so it's
* only flushed when the buffer fills or the FILE *
* is closed. On UN*X, we could set it to be line
* buffered, but the MSVC standard I/O routines don't
* support line buffering - they only support *byte*
* buffering, doing a write for every byte written,
* which is too inefficient, and full buffering,
* which is what you get if you request line buffering.
*/
fflush(stdout);
}
static void
sharkd_json_result_prologue(uint32_t id)
{
sharkd_json_response_open(id);
sharkd_json_object_open("result"); // start the result object
}
static void
sharkd_json_result_epilogue(void)
{
json_dumper_end_object(&dumper); // end the result object
sharkd_json_response_close();
}
static void
sharkd_json_result_array_prologue(uint32_t id)
{
sharkd_json_response_open(id);
sharkd_json_array_open("result"); // start the result array
}
static void
sharkd_json_result_array_epilogue(void)
{
sharkd_json_array_close(); // end of result array
sharkd_json_response_close();
}
static void
sharkd_json_simple_ok(uint32_t id)
{
sharkd_json_result_prologue(id);
sharkd_json_value_string("status", "OK");
sharkd_json_result_epilogue();
}
static void
sharkd_json_warning(uint32_t id, char *warning)
{
sharkd_json_result_prologue(id);
sharkd_json_value_string("status", "Warning");
sharkd_json_value_string("warning", warning);
sharkd_json_result_epilogue();
}
static void G_GNUC_PRINTF(4, 5)
sharkd_json_error(uint32_t id, int code, char* data, char* format, ...)
{
sharkd_json_response_open(id);
sharkd_json_object_open("error");
sharkd_json_value_anyf("code", "%d", code);
if (format)
{
// format the text message
va_list args;
va_start(args, format);
char *error_msg = ws_strdup_vprintf(format, args);
va_end(args);
sharkd_json_value_string("message", error_msg);
g_free(error_msg);
}
sharkd_json_object_close();
if (data)
sharkd_json_value_string("data", data);
sharkd_json_response_close();
}
static bool
is_param_match(const char *param_in, const char *valid_param)
{
char* ptr;
if ((ptr = g_strrstr(valid_param, "*")))
{
size_t prefix_len = ptr - valid_param;
return !strncmp(param_in, valid_param, prefix_len);
}
else
return !strcmp(param_in, valid_param);
}
/*
* json_prep does four things:
*
* 1. check the syntax of the root and parameter members
* 2. tokenize the names and values by zero terminating them
* 3. unescape the names and values
* 4. extracts and saves the rpcid
* - we have to do it here as it's needed for the error messages
*
* The objective is to minimise the validation work in the functions
* that process each called method.
*
* This gets a little messy as the JSON parser creates a flat list
* of all members rather than create a tree.
*/
static bool
json_prep(char* buf, const jsmntok_t* tokens, int count)
{
int i;
const char* method = NULL;
char* attr_name = NULL;
char* attr_value = NULL;
#define SHARKD_JSON_ANY 0
#define SHARKD_JSON_STRING 1
#define SHARKD_JSON_INTEGER 2
#define SHARKD_JSON_UINTEGER 3
#define SHARKD_JSON_FLOAT 4
#define SHARKD_JSON_OBJECT 5
#define SHARKD_JSON_ARRAY 6
#define SHARKD_JSON_BOOLEAN 7
#define SHARKD_ARRAY_END 99
struct member_attribute {
const char* parent_ctx;
const char* name;
int level;
jsmntype_t type;
int value_type;
bool is_mandatory;
};
#define SHARKD_MANDATORY true
#define SHARKD_OPTIONAL false
/*
* The member attribute structure is key to the syntax checking. The
* array contains all of the root level (1) member names, the data
* types permissible for the value and a boolean that indicates whether
* or not the member is mandatory.
*
* Once we get into the next layer (2) of the json tree, we need to check
* params member names and data types dependent in the context of the method
* (parent_ctx).
*/
struct member_attribute name_array[] = {
// Root members
{NULL, "jsonrpc", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_MANDATORY},
{NULL, "userid", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{NULL, "id", 1, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_MANDATORY},
{NULL, "method", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_MANDATORY},
{NULL, "params", 1, JSMN_OBJECT, SHARKD_JSON_OBJECT, SHARKD_OPTIONAL},
// Valid methods
{"method", "analyse", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "bye", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "check", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "complete", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "download", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "dumpconf", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "follow", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "frame", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "frames", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "info", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "intervals", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "iograph", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "load", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "setcomment", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "setconf", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "status", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"method", "tap", 1, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
// Parameters and their method context
{"check", "field", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"check", "filter", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"complete", "field", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"complete", "pref", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"download", "token", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"dumpconf", "pref", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"follow", "follow", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_MANDATORY},
{"follow", "filter", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_MANDATORY},
{"follow", "sub_stream", 2, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_OPTIONAL},
{"frame", "frame", 2, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_MANDATORY},
{"frame", "proto", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"frame", "ref_frame", 2, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_OPTIONAL},
{"frame", "prev_frame", 2, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_OPTIONAL},
{"frame", "columns", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"frame", "color", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"frame", "bytes", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"frame", "hidden", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"frames", "column*", 2, JSMN_UNDEFINED, SHARKD_JSON_ANY, SHARKD_OPTIONAL},
{"frames", "filter", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"frames", "skip", 2, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_OPTIONAL},
{"frames", "limit", 2, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_OPTIONAL},
{"frames", "refs", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"intervals", "interval", 2, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_OPTIONAL},
{"intervals", "filter", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "interval", 2, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_OPTIONAL},
{"iograph", "interval_units", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "graph0", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_MANDATORY},
{"iograph", "graph1", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "graph2", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "graph3", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "graph4", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "graph5", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "graph6", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "graph7", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "graph8", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "graph9", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter0", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter1", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter2", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter3", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter4", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter5", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter6", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter7", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter8", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "filter9", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"iograph", "aot0", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"iograph", "aot1", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"iograph", "aot2", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"iograph", "aot3", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"iograph", "aot4", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"iograph", "aot5", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"iograph", "aot6", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"iograph", "aot7", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"iograph", "aot8", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"iograph", "aot9", 2, JSMN_PRIMITIVE, SHARKD_JSON_BOOLEAN, SHARKD_OPTIONAL},
{"load", "file", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_MANDATORY},
{"setcomment", "frame", 2, JSMN_PRIMITIVE, SHARKD_JSON_UINTEGER, SHARKD_MANDATORY},
{"setcomment", "comment", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"setconf", "name", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_MANDATORY},
{"setconf", "value", 2, JSMN_UNDEFINED, SHARKD_JSON_ANY, SHARKD_MANDATORY},
{"tap", "tap0", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_MANDATORY},
{"tap", "tap1", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap2", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap3", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap4", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap5", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap6", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap7", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap8", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap9", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap10", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap11", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap12", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap13", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap14", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "tap15", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
{"tap", "filter", 2, JSMN_STRING, SHARKD_JSON_STRING, SHARKD_OPTIONAL},
// End of the name_array
{NULL, NULL, 0, JSMN_STRING, SHARKD_ARRAY_END, SHARKD_OPTIONAL},
};
rpcid = 0;
/* sanity check, and split strings */
if (count < 1 || tokens[0].type != JSMN_OBJECT)
{
sharkd_json_error(
rpcid, -32600, NULL,
"The request must an object"
);
return false;
}
/* don't need [0] token */
tokens++;
count--;
if (count & 1)
{
sharkd_json_error(
rpcid, -32600, NULL,
"The request must contain name/value pairs"
);
return false;
}
for (i = 0; i < count; i += 2)
{
buf[tokens[i + 0].end] = '\0';
buf[tokens[i + 1].end] = '\0';
}
// we must get the id as soon as possible so that it's available in all future error messages
attr_value = (char*)json_find_attr(buf, tokens, count, "id");
if (attr_value)
{
if (!ws_strtou32(attr_value, NULL, &rpcid))
{
sharkd_json_error(
rpcid, -32600, NULL,
"The id value must be a positive integer"
);
return false;
}
}
method = json_find_attr(buf, tokens, count, "method");
if (method)
{
bool is_supported = false;
i = 0; // name array index
// check that the request method is good
while (name_array[i].value_type != SHARKD_ARRAY_END)
{
if (name_array[i].parent_ctx)
{
if (!strcmp(method, name_array[i].name) && !strcmp(name_array[i].parent_ctx, "method"))
is_supported = true; // the method is valid
}
i++;
}
if (!is_supported)
{
sharkd_json_error(
rpcid, -32601, NULL,
"The method %s is not supported", method
);
return false;
}
}
for (i = 0; i < count; i += 2)
{
if (tokens[i].type != JSMN_STRING)
{
sharkd_json_error(
rpcid, -32600, NULL,
"Member names must be a string - member %d is not string", (i / 2) + 1
);
return false;
}
attr_name = &buf[tokens[i + 0].start];
attr_value = &buf[tokens[i + 1].start];
if (!strcmp(attr_name, "jsonrpc"))
{
if (strcmp(&buf[tokens[i + 1].start], "2.0"))
{
sharkd_json_error(
rpcid, -32600, NULL,
"Only JSON %s is supported", "2.0"
);
return false;
}
}
/* unescape only value, as keys are simple strings */
if (tokens[i + 1].type == JSMN_STRING && !json_decode_string_inplace(attr_value))
{
sharkd_json_error(
rpcid, -32600, NULL,
"Cannot unescape the value string of member %d", (i / 2) + 1
);
return false;
}
/* Confirm that the member is valid */
bool match = false;
// We need to check root members (level 1) and parameters (level 2), hence the for loop.
for (int level = 1; level < 3; level++)
{
size_t j = 0;
while (name_array[j].value_type != SHARKD_ARRAY_END) // iterate through the array until we hit the end
{
if (is_param_match(attr_name, name_array[j].name) && name_array[j].level == level)
{
// We need to be sure the match is in the correct context
// i.e. is this a match for a root member (level 1) or for a parameter (level 2).
if (level == 1)
{
// need to guard against a parameter name matching a method name
if (method)
{
if (name_array[j].parent_ctx)
{
j++;
continue;
}
if (!strcmp(method, &buf[tokens[i + 0].start]))
{
j++;
continue;
}
}
match = true;
}
else if (method)
{
if (level == 2 && !strcmp(name_array[j].parent_ctx, method))
match = true;
else
{
j++;
continue;
}
}
else
{
j++;
continue;
}
// The match looks good, let's now check the data types
if (tokens[i + 1].type != name_array[j].type && name_array[j].type != SHARKD_JSON_ANY)
{
sharkd_json_error(
rpcid, -32600, NULL,
"The data type for member %s is not valid", attr_name
);
return false;
}
else if (name_array[j].type == JSMN_PRIMITIVE && name_array[j].value_type == SHARKD_JSON_UINTEGER)
{
uint32_t temp;
if (!ws_strtou32(attr_value, NULL, &temp) || temp <= 0)
{
sharkd_json_error(
rpcid, -32600, NULL,
"The value for %s must be a positive integer", name_array[j].name
);
return false;
}
}
else if (name_array[j].type == JSMN_PRIMITIVE && name_array[j].value_type == SHARKD_JSON_BOOLEAN)
{
if (strcmp(attr_value, "true") && strcmp(attr_value, "false"))
{
sharkd_json_error(
rpcid, -32600, NULL,
"The value for %s must be a boolean (true or false)", name_array[j].name
);
return false;
}
}
break; // looks like a valid match
}
j++;
}
}
if (!match)
{
sharkd_json_error(
rpcid, -32600, NULL,
"%s is not a valid member name", attr_name
);
return false;
}
}
/* check for mandatory members */
size_t j = 0;
while (name_array[j].value_type != SHARKD_ARRAY_END)
{
if (name_array[j].is_mandatory && name_array[j].level == 1)
{
if (!json_find_attr(buf, tokens, count, name_array[j].name))
{
sharkd_json_error(
rpcid, -32600, NULL,
"Mandatory member %s is missing", name_array[j].name
);
return false;
}
}
j++;
}
// check that the current request contains the mandatory parameters
j = 0;
while (name_array[j].value_type != SHARKD_ARRAY_END)
{
if (name_array[j].is_mandatory && name_array[j].level == 2 && !strcmp(method, name_array[j].parent_ctx))
{
if (!json_find_attr(buf, tokens, count, name_array[j].name))
{
sharkd_json_error(
rpcid, -32600, NULL,
"Mandatory parameter %s is missing", name_array[j].name
);
return false;
}
}
j++;
}
// check that the parameters for the current request are valid for the method and that the data type for the value is valid
return true;
}
static void
sharkd_session_filter_free(void *data)
{
struct sharkd_filter_item *l = (struct sharkd_filter_item *) data;
g_free(l->filtered);
g_free(l);
}
static const struct sharkd_filter_item *
sharkd_session_filter_data(const char *filter)
{
struct sharkd_filter_item *l;
l = (struct sharkd_filter_item *) g_hash_table_lookup(filter_table, filter);
if (!l)
{
uint8_t *filtered = NULL;
int ret = sharkd_filter(filter, &filtered);
if (ret == -1)
return NULL;
l = g_new(struct sharkd_filter_item, 1);
l->filtered = filtered;
g_hash_table_insert(filter_table, g_strdup(filter), l);
}
return l;
}
static bool
sharkd_rtp_match_init(rtpstream_id_t *id, const char *init_str)
{
bool ret = false;
char **arr;
uint32_t tmp_addr_src, tmp_addr_dst;
address tmp_src_addr, tmp_dst_addr;
memset(id, 0, sizeof(*id));
arr = g_strsplit(init_str, "_", 7); /* pass larger value, so we'll catch incorrect input :) */
if (g_strv_length(arr) != 5)
goto fail;
/* TODO, for now only IPv4 */
if (!get_host_ipaddr(arr[0], &tmp_addr_src))
goto fail;
if (!ws_strtou16(arr[1], NULL, &id->src_port))
goto fail;
if (!get_host_ipaddr(arr[2], &tmp_addr_dst))
goto fail;
if (!ws_strtou16(arr[3], NULL, &id->dst_port))
goto fail;
if (!ws_hexstrtou32(arr[4], NULL, &id->ssrc))
goto fail;
set_address(&tmp_src_addr, AT_IPv4, 4, &tmp_addr_src);
copy_address(&id->src_addr, &tmp_src_addr);
set_address(&tmp_dst_addr, AT_IPv4, 4, &tmp_addr_dst);
copy_address(&id->dst_addr, &tmp_dst_addr);
ret = true;
fail:
g_strfreev(arr);
return ret;
}
static bool
sharkd_session_process_info_nstat_cb(const void *key, void *value, void *userdata _U_)
{
stat_tap_table_ui *stat_tap = (stat_tap_table_ui *) value;
json_dumper_begin_object(&dumper);
sharkd_json_value_string("name", stat_tap->title);
sharkd_json_value_stringf("tap", "nstat:%s", (const char *) key);
json_dumper_end_object(&dumper);
return false;
}
static bool
sharkd_session_process_info_conv_cb(const void* key, void* value, void* userdata _U_)
{
struct register_ct *table = (struct register_ct *) value;
const char *label = (const char *) key;
if (get_conversation_packet_func(table))
{
json_dumper_begin_object(&dumper);
sharkd_json_value_stringf("name", "Conversation List/%s", label);
sharkd_json_value_stringf("tap", "conv:%s", label);
json_dumper_end_object(&dumper);
}
if (get_endpoint_packet_func(table))
{
json_dumper_begin_object(&dumper);
sharkd_json_value_stringf("name", "Endpoint/%s", label);
sharkd_json_value_stringf("tap", "endpt:%s", label);
json_dumper_end_object(&dumper);
}
return false;
}
static bool
sharkd_session_seq_analysis_cb(const void *key, void *value, void *userdata _U_)
{
register_analysis_t *analysis = (register_analysis_t *) value;
json_dumper_begin_object(&dumper);
sharkd_json_value_string("name", sequence_analysis_get_ui_name(analysis));
sharkd_json_value_stringf("tap", "seqa:%s", (const char *) key);
json_dumper_end_object(&dumper);
return false;
}
static bool
sharkd_export_object_visit_cb(const void *key _U_, void *value, void *user_data _U_)
{
register_eo_t *eo = (register_eo_t *) value;
const int proto_id = get_eo_proto_id(eo);
const char *filter = proto_get_protocol_filter_name(proto_id);
const char *label = proto_get_protocol_short_name(find_protocol_by_id(proto_id));
json_dumper_begin_object(&dumper);
sharkd_json_value_stringf("name", "Export Object/%s", label);
sharkd_json_value_stringf("tap", "eo:%s", filter);
json_dumper_end_object(&dumper);
return false;
}
static bool
sharkd_srt_visit_cb(const void *key _U_, void *value, void *user_data _U_)
{
register_srt_t *srt = (register_srt_t *) value;
const int proto_id = get_srt_proto_id(srt);
const char *filter = proto_get_protocol_filter_name(proto_id);
const char *label = proto_get_protocol_short_name(find_protocol_by_id(proto_id));
json_dumper_begin_object(&dumper);
sharkd_json_value_stringf("name", "Service Response Time/%s", label);
sharkd_json_value_stringf("tap", "srt:%s", filter);
json_dumper_end_object(&dumper);
return false;
}
static bool
sharkd_rtd_visit_cb(const void *key _U_, void *value, void *user_data _U_)
{
register_rtd_t *rtd = (register_rtd_t *) value;
const int proto_id = get_rtd_proto_id(rtd);
const char *filter = proto_get_protocol_filter_name(proto_id);
const char *label = proto_get_protocol_short_name(find_protocol_by_id(proto_id));
json_dumper_begin_object(&dumper);
sharkd_json_value_stringf("name", "Response Time Delay/%s", label);
sharkd_json_value_stringf("tap", "rtd:%s", filter);
json_dumper_end_object(&dumper);
return false;
}
static bool
sharkd_follower_visit_cb(const void *key _U_, void *value, void *user_data _U_)
{
register_follow_t *follower = (register_follow_t *) value;
const int proto_id = get_follow_proto_id(follower);
const char *label = proto_get_protocol_short_name(find_protocol_by_id(proto_id));
const char *filter = label; /* correct: get_follow_by_name() is registered by short name */
json_dumper_begin_object(&dumper);
sharkd_json_value_stringf("name", "Follow/%s", label);
sharkd_json_value_stringf("tap", "follow:%s", filter);
json_dumper_end_object(&dumper);
return false;
}
static void
sharkd_session_print_capture_types(void)
{
unsigned i;
GArray *writable_type_subtypes;
writable_type_subtypes = wtap_get_writable_file_types_subtypes(FT_SORT_BY_NAME);
for (i = 0; i < writable_type_subtypes->len; i++) {
int ft = g_array_index(writable_type_subtypes, int, i);
sharkd_json_object_open(NULL);
sharkd_json_value_string("name", wtap_file_type_subtype_name(ft));
sharkd_json_value_string("description", wtap_file_type_subtype_description(ft));
sharkd_json_object_close();
}
g_array_free(writable_type_subtypes, TRUE);
}
struct encap_type_info
{
const char *name;
const char *description;
};
static int
encap_type_info_nat_compare(const void *a, const void *b)
{
return ws_ascii_strnatcmp(((const struct encap_type_info *)a)->name,
((const struct encap_type_info *)b)->name);
}
static void
encap_type_info_visit(void *data, void *user_data _U_)
{
sharkd_json_object_open(NULL);
sharkd_json_value_string("name", ((struct encap_type_info *)data)->name);
sharkd_json_value_string("description", ((struct encap_type_info *)data)->description);
sharkd_json_object_close();
}
static void
sharkd_session_print_encap_types(void)
{
int i;
struct encap_type_info *encaps;
GSList *list = NULL;
encaps = g_new(struct encap_type_info, WTAP_NUM_ENCAP_TYPES);
for (i = 0; i < WTAP_NUM_ENCAP_TYPES; i++) {
encaps[i].name = wtap_encap_name(i);
if (encaps[i].name != NULL) {
encaps[i].description = wtap_encap_description(i);
list = g_slist_insert_sorted(list, &encaps[i], encap_type_info_nat_compare);
}
}
g_slist_foreach(list, encap_type_info_visit, NULL);
g_slist_free(list);
g_free(encaps);
}
/**
* sharkd_session_process_info()
*
* Process info request
*
* Output object with attributes:
* (m) version - version number
*
* (m) columns - available column formats, array of object with attributes:
* 'name' - column name
* 'format' - column format-name
*
* (m) stats - available statistics, array of object with attributes:
* 'name' - statistic name
* 'tap' - sharkd tap-name for statistic
*
* (m) convs - available conversation list, array of object with attributes: