File: echld_test.c

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/* echld-test.c
 *  basic test framework for echld
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * Copyright (c) 2013 by Luis Ontanon <luis@ontanon.org>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "config.h"

#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif

#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif

#include <sys/time.h>
#include <sys/uio.h>

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <glib.h>
#include <glib/gprintf.h>

#include "echld/echld.h"
#include "echld/echld-util.h"

#include "epan/epan.h"
#include "wsutil/str_util.h"

typedef char* (*cmd_cb_t)(char** params, char** err);

typedef struct _cmd_t {
	const char* txt;
	cmd_cb_t cb;
	int args_taken;
	const char* help;
} cmd_t;


#define MAX_PARAMSETS 16

static enc_msg_t* paramsets[MAX_PARAMSETS] = {
	NULL,NULL,NULL,NULL, NULL,NULL,NULL,NULL,
	NULL,NULL,NULL,NULL, NULL,NULL,NULL,NULL
};

static int nps = 0;

static char* ps_cmd(char** pars _U_, char** err _U_) {
	int n_id = nps++;

	if (n_id >= MAX_PARAMSETS) {
		*err = g_strdup("Max Num of Paramsets reached");
		return NULL;
	}

	paramsets[n_id] = echld_new_child_params();

	return g_strdup_printf("New Paramset ps_id=%d",n_id);
}

static char* psadd_cmd(char** params _U_, char** err) {
	int ps_id = (int) strtol(params[1], NULL, 10);

	if (ps_id >= nps) {
		*err = g_strdup_printf("No paramset pd_is=%d",ps_id);
		return NULL;
	}

	echld_new_child_params_add_params(paramsets[ps_id], params[2], params[3], NULL);

	return g_strdup_printf("PSAdd ps_id=%d %s='%s'", ps_id, params[2], params[3]);
}

static char* psmerge_cmd(char** params, char** err) {
	int ps1_id = (int) strtol(params[1], NULL, 10);
	int ps2_id = (int) strtol(params[2], NULL, 10);
	int n_id;

	if (ps1_id >= nps) {
		*err = g_strdup_printf("No paramset pd_is=%d",ps1_id);
		return NULL;
	}

	if (ps2_id >= nps) {
		*err = g_strdup_printf("No paramset pd_is=%d",ps2_id);
		return NULL;
	}

	n_id = nps++;

	if (n_id >= MAX_PARAMSETS) {
		*err = g_strdup_printf("Max Num of Paramsets reached");
		return NULL;
	}

	paramsets[n_id] = echld_new_child_params_merge(paramsets[ps1_id],paramsets[ps2_id]);

	return g_strdup_printf("Merged Paramset ps1_id=%d ps2_id=%d ps_id=%d",ps1_id, ps2_id, n_id);
}

static char* new_child_cmd(char** params, char** err) {
	int ps_id = (int) strtol(params[1], NULL, 10);
	int child;

	if (ps_id >= nps) {
		*err = g_strdup_printf("No paramset pd_is=%d",ps_id);
		return NULL;
	}

	child = echld_new(paramsets[ps_id],NULL);

	if (child <= 0) {
		*err = g_strdup("No child\n");
		return NULL;
	}

	return g_strdup_printf("New chld_id=%d\n",child);
}


void ping_cb(long usec, void* data) {
	int ping_id = *((int*)data);

	if (usec >= 0) {
		fprintf(stdout, "Ping ping_id=%d returned in %dus\n",ping_id,(int)usec);
	} else {
		fprintf(stdout, "Ping ping_id=%d erored\n",ping_id);
	}

	g_free(data);
}


static char* ping_cmd(char** params, char** err) {
	int child = (int) strtol(params[1], NULL, 10);
	static int ping_id = 0;
	int* ping_data = g_new(int,1);

	*ping_data = ping_id++;

	if (!echld_ping(child,ping_cb,ping_data)) {
		*err = g_strdup_printf("Could not send ping child=%d",child);
		return NULL;
	} else {
		return g_strdup_printf("Ping sent child=%d",child);
	}
}

void param_cb(const char* param, const char* value, const char* error, void* data _U_) {
	if (error) {
		fprintf(stdout, "Param Set Error msg=%s\n", error );
	} else {
		fprintf(stdout, "Param: param='%s' val='%s'\n", param, value );
	}
}

static char* set_cmd(char** params, char** err) {
	int child = (int) strtol(params[1], NULL, 10);
	char* param = params[2];
	char* value = params[3];

	if ( ! echld_set_param(child,param,value,param_cb,NULL) ) {
		*err = g_strdup_printf("Failed to SET child=%d param='%s' value='%s'",child,param,value);
		return NULL;
	} else {
		return g_strdup_printf("Set command sent child=%d param='%s' value='%s'",child,param,value);
	}
}

static char* get_cmd(char** params, char** err) {
	int child = (int) strtol(params[1], NULL, 10);
	char* param = params[2];

	if ( ! echld_get_param(child,param,param_cb,NULL) ) {
		*err = g_strdup_printf("Failed to GET child=%d param='%s'",child,param);
		return NULL;
	} else {
		return g_strdup_printf("Get command sent child=%d param='%s'",child,param);
	}
}

static void close_cb(const char* error, void* data) {
	if (error) {
		fprintf(stdout, "Close Error msg=%s\n", error );
	} else {
		fprintf(stdout, "Closed: child=%d\n", *((int*)data) );
	}
}

static char* close_cmd(char** params, char** err) {
	int child = (int) strtol(params[1], NULL, 10);
	int* cmdp = g_new(int,1);
	*cmdp = child;
	if ( ! echld_close(child,close_cb,cmdp) ) {
		*err = g_strdup_printf("Could not close child=%d",child);
		return NULL;
	} else {
		return g_strdup_printf("CLose command sent child=%d",child);
	}
}
int keep_going = 1;

static char* quit_cmd(char** params _U_, char** err _U_) {
	keep_going = 0;
	return g_strdup("Quitting");
}

static char* help_cmd(char**, char**);

static char* open_file_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* prepare_capture_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* start_capture_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* get_sum_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* get_tree_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* get_buf_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* stop_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* note_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* apply_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* save_cmd(char** pars _U_, char** err _U_) {
	*err = g_strdup("Not Implemented");
	return NULL;
}

static char* run_cmd(char** pars, char** err _U_);




cmd_t commands[] = {
	{ "QUIT", quit_cmd, 0, "QUIT"},
	{ "HELP", help_cmd, 0, "HELP"},
	{ "RUN", run_cmd, 1, "RUN filename"},
	{ "PS", ps_cmd, 1, "PS [dummy]"},
	{ "PSADD", psadd_cmd, 4, "PSADD ps_id param value"},
	{ "PSMERGE", psmerge_cmd, 4, "PSMERGE ps_id ps_id"},
	{ "NEW", new_child_cmd, 1, "NEW ps_id"},
	{ "PING", ping_cmd, 1, "PING child_id"},
	{ "SET", set_cmd, 3, "SET child_id param_name param_val"},
	{ "GET", get_cmd, 2, "GET child_id param_name"},
	{ "CLOSE", close_cmd, 1, "CLOSE child_id"},
	{ "FILE", open_file_cmd, 2, "FILE child_id filename"},
	{ "PREP", prepare_capture_cmd, 2, "PREP child_id intfname params"},
	{ "START",start_capture_cmd,1,"START child_id"},
	{ "SUM", get_sum_cmd,2,"SUM child_id packet_range"},
	{ "TREE", get_tree_cmd,2,"TREE child_id packet_range"},
	{ "BUFF", get_buf_cmd,2,"BUFF child_id buffer_name"},
	{ "STOP", stop_cmd,1,"STOP child_id"},
	{ "NOTE", note_cmd,1,"NOTE child_id framenum note..."},
	{ "APPLY", apply_cmd,1,"APPLY child_id dfilter"},
	{ "SAVE", save_cmd,1,"SAVE child_id filename params"},
	{ NULL, NULL, 0, NULL }
};

static char* help_cmd(char** params _U_, char** err _U_) {
	GString* out = g_string_new("Commands:\n");
	cmd_t* c = commands;
	char* s;

	for (;c->txt;c++) {
		g_string_append_printf(out,"%s\n",c->help);
	}
	s = out->str;
	g_string_free(out,FALSE);
	return s;
}


static int invoke_cmd(FILE* in_fp) {
	size_t len;
	char* cmd_line;

	if(( cmd_line = fgetln(in_fp,&len) )) {
		cmd_t* c = commands;
		cmd_line[len] = 0;
		g_strchomp(cmd_line);

		for (;c->txt;c++) {
			if ( strcasestr(cmd_line, c->txt) == cmd_line ) {
				char** params = g_strsplit(cmd_line, " ", c->args_taken+1);
				char* err = NULL;
				char* str = c->cb(params,&err);

				if (err) {
					fprintf(stdout, "Error: %s\n", err);
					g_free(err);
				} else {
					fprintf(stdout, "%s\n", str);
					g_free(str);
				}

				g_strfreev(params);
				return TRUE;
			}
		}

		fprintf(stdout, "Error: no such command %s\n", cmd_line);
		return TRUE;
	} else {
		return FALSE;
	}
}

static char* run_cmd(char** pars, char** err _U_) {
	FILE* fp = fopen(pars[1],"r");
	while(invoke_cmd(fp)) { ; }
	fclose(fp);
	return NULL;
}


int got_param = 0;


int main(int argc _U_, char** argv _U_) {
	struct timeval tv;
	int tot_cycles = 0;
	echld_init_t init = {ECHLD_ENCODING_JSON,argv[0],main,NULL,NULL,NULL,NULL};


	tv.tv_sec = 5;
	tv.tv_usec = 0;

	echld_set_parent_dbg_level(5);

	echld_initialize(&init);

	do {
		fd_set rfds;
		fd_set efds;
		int nfds;

		FD_ZERO(&rfds);
		FD_ZERO(&efds);
		FD_SET(0,&rfds);
		FD_SET(0,&efds);

		nfds = echld_select(FD_SETSIZE, &rfds, NULL, &efds, &tv);

		if (FD_ISSET(0,&rfds)) {
			invoke_cmd(stdin);
		}

		tot_cycles++;
	} while( keep_going );

	fprintf(stderr, "Done: tot_cycles=%d\n", tot_cycles );

	echld_terminate();
	return 0;
}