MQTTVersion.c File Reference

MQTTVersion - display the version and build information strings for a library. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <ctype.h>
#include "MQTTAsync.h"
#include <dlfcn.h>
#include <sys/mman.h>
#include <unistd.h>

Include dependency graph for MQTTVersion.c:

Macros
#define	ARRAY_SIZE(a)   (sizeof(a) / sizeof(a[0]))

Typedefs
typedef MQTTAsync_nameValue *(*	func_type) (void)

Functions
char *	FindString (char *filename, const char *eyecatcher_input)
	Finds an eyecatcher in a binary file and returns the following value. More...
int	printVersionInfo (MQTTAsync_nameValue *info)
int	loadandcall (const char *libname)
void	printEyecatchers (char *filename)
int	main (int argc, char **argv)

Variables
static const char *	libraries [] = {"paho-mqtt3c", "paho-mqtt3cs", "paho-mqtt3a", "paho-mqtt3as"}
static const char *	eyecatchers []

Detailed Description

MQTTVersion - display the version and build information strings for a library.

With no arguments, we try to load and call the version string for the libraries we know about: mqttv3c, mqttv3cs, mqttv3a, mqttv3as. With an argument: 1) we try to load the named library, call getVersionInfo and display those values. 2) If that doesn't work, we look through the binary for eyecatchers, and display those.
This will work if the library is not executable in the current environment.

Function Documentation

FindString()

char * FindString	(	char *	filename,
		const char *	eyecatcher_input
	)

Finds an eyecatcher in a binary file and returns the following value.

Parameters

filename	the name of the file
eyecatcher_input	the eyecatcher string to look for

Returns

the value found - "" if not found

Variable Documentation

eyecatchers

const char* eyecatchers[]

static

Initial value:

= {"MQTTAsyncV3_Version", "MQTTAsyncV3_Timestamp",
                                         "MQTTClientV3_Version", "MQTTClientV3_Timestamp"}