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rtes_messenger
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Christos Houtouridis 4 years ago
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  1. +5
    -0
      .gitignore
  2. +142
    -0
      eclipse_usb/.cproject
  3. +1
    -0
      eclipse_usb/.gdbinit
  4. +26
    -0
      eclipse_usb/.project
  5. +25
    -0
      eclipse_usb/.settings/language.settings.xml
  6. +1
    -0
      eclipse_usb/src
  7. +141
    -0
      eclipse_wifi/.cproject
  8. +1
    -0
      eclipse_wifi/.gdbinit
  9. +26
    -0
      eclipse_wifi/.project
  10. +25
    -0
      eclipse_wifi/.settings/language.settings.xml
  11. +1
    -0
      eclipse_wifi/src
  12. +111
    -0
      src/client.c
  13. +15
    -0
      src/client.h
  14. +375
    -0
      src/core.c
  15. +44
    -0
      src/core.h
  16. +112
    -0
      src/listener.c
  17. +17
    -0
      src/listener.h
  18. +231
    -0
      src/main.c
  19. +806
    -0
      src/messenger.c
  20. +204
    -0
      src/msg_impl.h

+ 5
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.gitignore View File

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Requirements/*
Various/*

*Debug
*Release

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eclipse_usb/.cproject View File

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+ 1
- 0
eclipse_wifi/.gdbinit View File

@@ -0,0 +1 @@
set sysroot D:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot

+ 26
- 0
eclipse_wifi/.project View File

@@ -0,0 +1,26 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>RTES_Final_wifi</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
<triggers>clean,full,incremental,</triggers>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
<triggers>full,incremental,</triggers>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.cdt.core.cnature</nature>
<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
</natures>
</projectDescription>

+ 25
- 0
eclipse_wifi/.settings/language.settings.xml View File

@@ -0,0 +1,25 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project>
<configuration id="cdt.managedbuild.config.gnu.cross.exe.debug.1284374022" name="Debug">
<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-1387128168067808926" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
<language-scope id="org.eclipse.cdt.core.gcc"/>
<language-scope id="org.eclipse.cdt.core.g++"/>
</provider>
</extension>
</configuration>
<configuration id="cdt.managedbuild.config.gnu.cross.exe.release.292764361" name="Release">
<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-1387128168067808926" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
<language-scope id="org.eclipse.cdt.core.gcc"/>
<language-scope id="org.eclipse.cdt.core.g++"/>
</provider>
</extension>
</configuration>
</project>

+ 1
- 0
eclipse_wifi/src View File

@@ -0,0 +1 @@
../src

+ 111
- 0
src/client.c View File

@@ -0,0 +1,111 @@
/*!
* \file client.c
*
* \author Christos Choutouridis AEM:8997 <cchoutou@ece.auth.gr>
*/
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/ip_icmp.h>
#include <sys/time.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include "client.h"
// Calculating the Check Sum
static unsigned short _checksum(void *b, int len) {
unsigned short *buf = b;
unsigned int sum=0;
unsigned short result;
for ( sum = 0; len > 1; len -= 2 )
sum += *buf++;
if ( len == 1 )
sum += *(unsigned char*)buf;
sum = (sum >> 16) + (sum & 0xFFFF);
sum += (sum >> 16);
result = ~sum;
return result;
}
static void _mk_ping_pkt (ping_pkt_t* pkt) {
memset ((void*)&pkt->hdr, 0, sizeof(pkt->hdr));
//memset ((void*)&pkt->msg, '0', sizeof(pkt->msg));
pkt->msg[PING_MSG_S -1] = 0;
pkt->hdr.type = ICMP_ECHO;
pkt->hdr.un.echo.id = getpid();
pkt->hdr.un.echo.sequence = 0;
pkt->hdr.checksum = _checksum (&pkt, sizeof(pkt));
}
bool ping (device_t* dev) {
static int sockfd =-1;
int ttl_val =64;
struct timeval tv_out = { 1, 0 };
if (sockfd == -1 && dev) {
// create socket and set options at ip to TTL and value to 64 and timeout of recv
if ((sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP)) == -1) {
log_error ("Error: Can not create raw socket for icmp\n");
return false;
}
#ifndef NO_DEBUG
log_debug("Debug: Raw socket for icmp created\n");
#endif
int ret = setsockopt(sockfd, SOL_IP, IP_TTL, &ttl_val, sizeof(ttl_val));
ret |= setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, (const char*)&tv_out, sizeof(tv_out));
if (ret == -1) {
log_error ("Error: Can not set options to socket\n");
close (sockfd);
sockfd =-1;
return false;
}
#ifndef NO_DEBUG
log_debug("Debug: Raw socket options set\n");
#endif
}
if (!dev) {
// Close socket
close (sockfd);
sockfd =-1;
#ifndef NO_DEBUG
log_debug ("Debug: Raw socket closed\n");
#endif
return true;
}
else {
// ping packet structure
ping_pkt_t pkt;
_mk_ping_pkt (&pkt);
int st;
//send packet
struct sockaddr_in ping_addr = {
.sin_family = AF_INET,
.sin_addr = { htonl (device2addr (dev)) }
};
if ((st=sendto (sockfd, &pkt, sizeof(pkt), 0, (struct sockaddr*)&ping_addr, sizeof(ping_addr))) <= 0)
return false;
#ifndef NO_DEBUG
log_debug ("Debug: Echo send to %s\n", inet_ntoa(ping_addr.sin_addr));
#endif
//receive packet
struct sockaddr_in r_addr;
socklen_t addr_len =sizeof(r_addr);
if ((st=recvfrom (sockfd, &pkt, sizeof(pkt), 0, (struct sockaddr*)&r_addr, &addr_len)) <= 0)
return false;
#ifndef NO_DEBUG
log_debug ("Debug: Echo received from %s\n", inet_ntoa(ping_addr.sin_addr));
#endif
return (pkt.hdr.type == 69 && pkt.hdr.code == 0) ? true: false;
}
return false;
}

+ 15
- 0
src/client.h View File

@@ -0,0 +1,15 @@
/*!
* \file client.h
*
* \author Christos Choutouridis AEM:8997 <cchoutou@ece.auth.gr>
*/
#ifndef __client_h__
#define __client_h__
#include "core.h"
#include "msg_impl.h"
bool ping (device_t* dev);
#endif /* __client_h__ */

+ 375
- 0
src/core.c View File

@@ -0,0 +1,375 @@
/*!
* \file core.c
*
* \author Christos Choutouridis AEM:8997 <cchoutou@ece.auth.gr>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <pthread.h>
#include "core.h"
pthread_mutex_t lock_msgList;
//! Helper API
//! @{
#define _ADHOC_SUBNET(A, B, C, D) (((A)<<24) | ((B)<<16) | ((C)<<8) | (D))
device_t addr2device (uint32_t in_addr) {
device_t dev = {
.id = (in_addr & 0x000000FF) + ((in_addr >> 8) & 0x000000FF) * 100,
.next = NULL
};
return dev;
}
uint32_t device2addr (const device_t* dev) {
uint32_t add = _adhoc_subnet;
add |= (dev->id % 100) & 0x000000FF;
add |= ((dev->id / 100) & 0x000000FF) << 8;
return add;
}
device_t ip2device (devIP_t* ip) {
device_t dev = {
.id = ip->C*100 + ip->D,
.next = NULL
};
return dev;
}
devIP_t device2ip (const device_t* dev) {
devIP_t ip = {
.A=0, .B=0, .C=dev->id/100, .D=dev->id%100
};
return ip;
}
devIP_t addr2ip (uint32_t in_addr) {
devIP_t ip = {
.A=0, .B=0,
.C=(in_addr >> 8) & 0x000000FF,
.D=in_addr & 0x000000FF
};
return ip;
}
//! @}
//! cMsg_t API
//! @{
/*!
* Parse an incoming message
*
* @param cMsg Pointer to cMsg object to store the parsed data
* @param rawMsg Pointer to raw message
* @param size The size f raw message buffer
* @return The status of the operation
* @arg MSG_OK Success
* @arg MSG_ERROR Parse failure, incoming message format error
*/
status_t cMsg_parse (cMsg_t* cMsg, char_t* rawMsg, size_t size) {
// Check message integrity
if (size > MSG_TEXT_SIZE)
return MSG_ERROR;
int d =0;
for (size_t i =0; rawMsg[i] && i<size; ++i) {
d += (rawMsg[i] == MSG_DELIMITER) ? 1:0;
}
if (d != 3)
return MSG_ERROR;
// Get message
strcpy(cMsg->msg, rawMsg);
// Parse message
char_t del[2] = {MSG_DELIMITER, '\0'};
char_t* tok;
tok = strtok (cMsg->msg, del);
cMsg->from = atoi (tok);
tok = strtok(NULL, del);
cMsg->to = atoi (tok);
tok = strtok(NULL, del);
cMsg->ts = atoll (tok);
tok = strtok(NULL, del);
cMsg->text = tok - cMsg->msg;
return MSG_OK;
}
/*! getter for cMsg_t member fromAEM */
uint32_t cMsg_getFrom(cMsg_t* cMsg) { return cMsg->from; }
/*! getter for cMsg_t member toAEM */
uint32_t cMsg_getTo(cMsg_t* cMsg) { return cMsg->to; }
/*! getter for cMsg_t member fromAEM */
uint64_t cMsg_getTs(cMsg_t* cMsg) { return cMsg->ts; }
/*! getter for payload text member */
char_t* cMsg_getText(cMsg_t* cMsg) { return (char_t*)& cMsg->msg[cMsg->text]; }
/*!
* Predicate to check core message equality
* @param m1 Pointer to message 1
* @param m2 Pointer to message 2
* @return Equality result (true, false)
*/
bool cMsg_equal (cMsg_t* m1, cMsg_t* m2) {
if (m1->from != m2->from) return false;
if (m1->to != m2->to) return false;
if (m1->ts != m2->ts) return false;
if (strncmp (cMsg_getText(m1), cMsg_getText(m2), sizeof(m1->msg)))
return false;
return true;
}
//! @}
/*!
* Create a message list for our application.
*/
msgList_t msgList;
//! msgList API
//! @{
/*! Macro helper to saturate increased values */
#define _top_saturate(test, apply, value) do { \
if (test >= value) apply = value; \
} while (0)
/*! Macro helper to saturate decreased values */
#define _btm_saturate(test, apply, value) do { \
if (test < value) apply = value; \
while (0)
/*!
* @brief msgList iterator pre-increment in the msg_t direction
*
* This iterator force a ring buffer behavior. This function takes pointer
* to iterator to alter but return the altered value so it can be directly
* used in expressions
*
* @param it Pointer to iterator to increase
* @return The iterator values
*/
static mIter_t _preInc(mIter_t* it) {
if (++*it >= MSG_LIST_SIZE) *it = 0;
return *it;
}
/*!
* @brief msgList iterator pre-decrement in the msg_t direction
*
* This iterator force a ring buffer behavior. This function takes pointer
* to iterator to alter but return the altered value so it can be directly
* used in expressions
*
* @param it Pointer to iterator to decrease
* @return The iterator values
*/
static mIter_t _preDec(mIter_t* it) {
if (--*it < 0) *it = MSG_LIST_SIZE;
return *it;
}
/*!
* @brief Access devices in the device_t direction.
*
* This function returns the first device on the recipient list if there is one.
*
* @param this The msgList object to work with
* @param it The iterator value [msg_t direction]
* @return Pointer to first device on the list, or NULL if the list is empty
*/
static device_t* devList_get (msgList_t* this, mIter_t it) {
device_t* d = this->m[it].recipients;
return (d) ? d->next : NULL;
}
/*!
* Iterate through device list.
*
* This function return the next device on the recipient list if there is one.
* [device direction]
*
* @param d Pointer to current device
* @return Pointer to next device on the list, or NULL if the list is empty
*/
//static device_t* devList_getNext (device_t* d) {
// return (d) ? d->next : NULL;
//}
/*!
* @brief Adds a new device on the recipients list
*
* @param this The msgList object to work with
* @param it The iterator value [msg_t direction]
* @param dev Pointer to device to add [device direction]
* @return The status of the operation
* @arg MSG_OK Success
* @arg MSG_ERROR memory allocation error
*/
status_t devList_add (msgList_t* this, mIter_t it, device_t* dev) {
pthread_mutex_lock (&lock_msgList);
device_t* last = devList_get (this, it);
while (last && last->next)
last = last->next;
last = (device_t*)malloc (sizeof(device_t));
*last = *dev;
pthread_mutex_unlock (&lock_msgList);
return (last) ? MSG_OK : MSG_ERROR;
}
/*!
* Frees up all allocated memory in a device list.
*
* @param this The msgList object to work with
* @param it The iterator value [msg_t direction]
*/
static void devList_free (msgList_t* this, mIter_t it) {
device_t* last = devList_get (this, it);
while (last) {
device_t* next = last->next;
free(last);
last = next;
}
}
status_t msgList_init (msgList_t* msgList) {
if (pthread_mutex_init(&lock_msgList, NULL) != 0) {
fprintf (stderr, "Error %s: mutex init has failed\n", __FUNCTION__ );
return MSG_ERROR;
}
memset((void*)msgList, 0, sizeof(msgList_t));
msgList->last =-1;
return MSG_OK;
}
/*!
* Searches for a message in the message list.
*
* @param this The msgList object to work with
* @param msg Pointer to message to search
* @return Iterator to message if found, or -1 if not
*/
mIter_t msgList_find (msgList_t* this, msg_t* msg) {
pthread_mutex_lock (&lock_msgList);
mIter_t it =this->last; // get iterator
// search from end to start to find msg, return on success
for (size_t i=0 ; i < this->size ; ++i) {
if (cMsg_equal (&this->m[it].cMsg, &msg->cMsg)) {
pthread_mutex_unlock (&lock_msgList);
return it;
}
_preDec(&it);
// We start from the end as we think, its more possible
// to find msg in the recent messages.
}
pthread_mutex_unlock (&lock_msgList);
return (mIter_t)-1; // fail to find
}
/*!
* Add a new message in the message list
*
* @param this The msgList object to work with
* @param msg Pointer to message
*/
void msgList_add (msgList_t* this, msg_t* msg) {
pthread_mutex_lock (&lock_msgList);
devList_free (this, _preInc(&this->last)); // free up possible previous recipients list
this->m[this->last] = *msg; // store data
pthread_mutex_unlock (&lock_msgList);
_top_saturate(++this->size, this->size, MSG_LIST_SIZE); // count the items
}
//! @}
static char_t* _frm_msg_io = "dev=%d, message: from=%d, to=%d, timestamp=%lld, text=%s";
static char_t* _frm_msg_new = "new message: from=%d, to=%d, timestamp=%lld, text=%s";
pthread_mutex_t lock_stderr;
pthread_mutex_t lock_stdout;
status_t log_init (void) {
if (pthread_mutex_init(&lock_stderr, NULL) != 0) {
fprintf (stderr, "Error %s: mutex init has failed\n", __FUNCTION__ );
return MSG_ERROR;
}
if (pthread_mutex_init(&lock_stdout, NULL) != 0) {
fprintf (stderr, "Error %s: mutex init has failed\n", __FUNCTION__ );
return MSG_ERROR;
}
return MSG_OK;
}
void log_msg_io (msg_t* msg) {
if (settings.outLevel >= OUTLEVEL_1) {
char_t head[16];
strncpy (head, cMsg_getText(&msg->cMsg), sizeof(head));
head[16] = 0;
pthread_mutex_lock(&lock_stdout);
fprintf (stdout, _frm_msg_io,
msg->sender.id,
cMsg_getFrom (&msg->cMsg),
cMsg_getTo (&msg->cMsg),
cMsg_getTs (&msg->cMsg),
head
);
fflush(stdout);
pthread_mutex_unlock(&lock_stdout);
}
}
void log_msg_new (msg_t* msg) {
if (settings.outLevel >= OUTLEVEL_1) {
char_t head[16];
strncpy (head, cMsg_getText(&msg->cMsg), sizeof(head));
head[16] = 0;
pthread_mutex_lock(&lock_stdout);
fprintf (stdout, _frm_msg_new,
cMsg_getFrom (&msg->cMsg),
cMsg_getTo (&msg->cMsg),
cMsg_getTs (&msg->cMsg),
head
);
fflush(stdout);
pthread_mutex_unlock(&lock_stdout);
}
}
void log_debug (const char *fmt, ...) {
if (settings.outLevel >= OUTLEVEL_2) {
va_list ap;
va_start(ap, fmt);
pthread_mutex_lock(&lock_stdout);
vfprintf (stdout, fmt, ap);
fflush(stdout);
pthread_mutex_unlock(&lock_stdout);
va_end(ap);
}
}
void log_error (const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
pthread_mutex_lock(&lock_stderr);
vfprintf (stderr, fmt, ap);
fflush(stderr);
pthread_mutex_unlock(&lock_stderr);
va_end(ap);
}

+ 44
- 0
src/core.h View File

@@ -0,0 +1,44 @@
/*!
* \file core.h
*
* \author Christos Choutouridis AEM:8997 <cchoutou@ece.auth.gr>
*/
#ifndef __core__
#define __core__
#include "msg_impl.h"
extern msgList_t msgList;
device_t addr2device (uint32_t in_addr);
uint32_t device2addr (const device_t* dev);
device_t ip2device (devIP_t* ip);
devIP_t device2ip (const device_t* dev);
devIP_t addr2ip (uint32_t in_addr);
status_t cMsg_parse (cMsg_t* cMsg, char_t* rawMsg, size_t size);
uint32_t cMsg_getFrom (cMsg_t* cMsg);
uint32_t cMsg_getTo (cMsg_t* cMsg);
uint64_t cMsg_getTs (cMsg_t* cMsg);
char_t* cMsg_getText (cMsg_t* cMsg);
bool cMsg_equal (cMsg_t* m1, cMsg_t* m2);
//device_t* devList_get (msgList_t* this, mIter_t it);
//device_t* devList_getNext (device_t* d);
status_t devList_add (msgList_t* this, mIter_t it, device_t* dev);
//void devList_free (msgList_t* this, mIter_t it);
status_t msgList_init (msgList_t* msgList);
mIter_t msgList_find (msgList_t* this, msg_t* msg);
void msgList_add (msgList_t* this, msg_t* msg);
status_t log_init (void);
void log_msg_io (msg_t* msg);
void log_msg_new (msg_t* msg);
void log_debug (const char *fmt, ...);
void log_error (const char *fmt, ...);
#endif /* __core__ */

+ 112
- 0
src/listener.c View File

@@ -0,0 +1,112 @@
/*!
* \file listener.c
* \brief Listener related functionality
*
* \author Christos Choutouridis AEM:8997 <cchoutou@ece.auth.gr>
*/
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
//#include <pthread.h>
#include "listener.h"
static void srv_action (device_t* d, char_t* buffer, size_t size) {
msg_t msg = { .sender =*d, .recipients =NULL };
cMsg_parse (&msg.cMsg, buffer, size);
mIter_t myCopy = msgList_find (&msgList, &msg);
if (myCopy == -1) {
// I don't have a copy after all
msgList_add (&msgList, &msg);
log_msg_io (&msg); // semaphore
}
else {
// Do not forward a duplicate message to sender, he already has it
devList_add (&msgList, myCopy, &msg.sender);
#ifndef NO_DEBUG
log_debug("Debug: Duplicate message from: %d\n", msg.sender.id);
#endif
}
}
status_t listener() {
int srvSock;
struct sockaddr_in srvAddPort;
char_t buffer[256];
memset(&srvAddPort, 0, sizeof(srvAddPort));
srvAddPort.sin_family= AF_INET;
srvAddPort.sin_port= htons(settings.port);
srvAddPort.sin_addr.s_addr = htonl(INADDR_ANY);
if ((srvSock = socket (PF_INET, SOCK_STREAM, 0)) == -1) {
log_error ("Error: Can not create socket\n");
return MSG_ERROR;
}
#ifndef NO_DEBUG
log_debug("Debug: Socket for listening created\n");
#endif
if(bind(srvSock, (struct sockaddr *) &srvAddPort, sizeof(srvAddPort)) == -1) {
log_error ("Error: Can not bind socket to port %d\n", settings.port);
close (srvSock);
return MSG_ERROR;
}
if (listen (srvSock, DEVICE_LIST_SIZE) == -1) {
log_error ("Error: Can not enable socket\n");
close (srvSock);
return MSG_ERROR;
}
#ifndef NO_DEBUG
log_debug("Debug: Listening on [0.0.0.0], port %d\n", settings.port);
#endif
while (1) {
struct sockaddr_in clntAddr;
size_t clntLen= sizeof(clntAddr);
int clntSock;
int rcvBytes;
if ((clntSock = accept (srvSock, (struct sockaddr *)&clntAddr, (socklen_t*)&clntLen)) == -1) {
close (srvSock);
continue;
}
#ifndef NO_DEBUG
devIP_t ip = addr2ip(ntohl(clntAddr.sin_addr.s_addr));
log_debug ("Debug: Connection from %u.%u.%u.%u port:%u received\n",
ip.A, ip.B, ip.C, ip.D, clntAddr.sin_port
);
#endif
if ((rcvBytes = recv(clntSock, buffer, sizeof(buffer), 0)) < 0) {
log_error ("Error: Fail to receive from socket\n");
close (srvSock);
close (clntSock);
continue;
}
buffer[rcvBytes] = '\0';
close(clntSock);
device_t dev = addr2device (ntohl(clntAddr.sin_addr.s_addr));
#ifndef NO_DEBUG
log_debug ("Debug: Message from %u.%u.%u.%u port:%u received\n");
#endif
srv_action (&dev, buffer, rcvBytes);
}
close(srvSock);
#ifndef NO_DEBUG
log_debug ("Debug: Socket for listening closed\n");
#endif
return MSG_OK;
}
void* thListener(void* ptr) {
(void)&ptr; // use parameter
listener();
return NULL;
}

+ 17
- 0
src/listener.h View File

@@ -0,0 +1,17 @@
/*!
* \file listener.h
* \brief Listener related functionality
*
* \author Christos Choutouridis AEM:8997 <cchoutou@ece.auth.gr>
*/
#ifndef __listener_h__
#define __listener_h__
#include "core.h"
#include "msg_impl.h"
status_t listener();
void* thListener(void* ptr);
#endif /* __listener_h__ */

+ 231
- 0
src/main.c View File

@@ -0,0 +1,231 @@
#include <pthread.h>
#include "listener.h"
#include "client.h"
#include "msg_impl.h"
settings_t settings_init (settings);
//status_t client (char_t* ip) {
// int sockid;
// struct sockaddr_in srvAddPort;
//// struct sockaddr_in clntAddr;
//// char buffer[256];
//
// memset(&srvAddPort, 0, sizeof(srvAddPort));
// srvAddPort.sin_family= AF_INET;
// srvAddPort.sin_port= htons(2288);
// srvAddPort.sin_addr.s_addr = inet_addr(ip);
//
// if ((sockid = socket (PF_INET, SOCK_STREAM, 0)) == -1)
// return MSG_ERROR;
//
// if (connect(sockid, (struct sockaddr*)&srvAddPort, sizeof(srvAddPort)) == -1) {
// close (sockid);
// return MSG_ERROR;
// }
//
// if (send(sockid, sms, strlen(sms), MSG_CONFIRM) == -1) {
// close(sockid);
// return MSG_ERROR;
// }
//
// close(sockid);
// return MSG_OK;
//}
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/ip_icmp.h>
#include <stdio.h>
#include <unistd.h>
//// make a ping request
//void send_ping(int ping_sockfd, struct sockaddr_in *ping_addr,
// char *ping_dom, char *ping_ip, char *rev_host)
//{
// int ttl_val=64, msg_count=0, i, addr_len, flag=1,
// msg_received_count=0;
//
// struct ping_pkt pckt;
// struct sockaddr_in r_addr;
// struct timespec time_start, time_end, tfs, tfe;
// long double rtt_msec=0, total_msec=0;
// struct timeval tv_out;
// int failure_cnt= 0;
// int cnt;
//
// tv_out.tv_sec = RECV_TIMEOUT;
// tv_out.tv_usec = 0;
//
// clock_gettime(CLOCK_MONOTONIC, &tfs);
//
//
// // set socket options at ip to TTL and value to 64,
// // change to what you want by setting ttl_val
// if (setsockopt(ping_sockfd, SOL_IP, IP_TTL,
// &ttl_val, sizeof(ttl_val)) != 0)
// {
// printf("\nSetting socket options to TTL failed!\n");
// return;
// }
//
// else
// {
// printf("\nSocket set to TTL..\n");
// }
//
// // setting timeout of recv setting
// setsockopt(ping_sockfd, SOL_SOCKET, SO_RCVTIMEO,
// (const char*)&tv_out, sizeof tv_out);
//
// // send icmp packet in an infinite loop
// while(pingloop)
// {
// // flag is whether packet was sent or not
// flag=1;
//
// //filling packet
// bzero(&pckt, sizeof(pckt));
//
// pckt.hdr.type = ICMP_ECHO;
// pckt.hdr.un.echo.id = getpid();
//
// for ( i = 0; i < sizeof(pckt.msg)-1; i++ )
// pckt.msg[i] = i+'0';
//
// pckt.msg[i] = 0;
// pckt.hdr.un.echo.sequence = msg_count++;
// pckt.hdr.checksum = checksum(&pckt, sizeof(pckt));
//
//
// usleep(PING_SLEEP_RATE);
//
// //send packet
// clock_gettime(CLOCK_MONOTONIC, &time_start);
// if ( sendto(ping_sockfd, &pckt, sizeof(pckt), 0,
// (struct sockaddr*) ping_addr,
// sizeof(*ping_addr)) <= 0)
// {
// printf("\nPacket Sending Failed!\n");
// flag=0;
// }
//
// //receive packet
// addr_len=sizeof(r_addr);
//REC:
// cnt = recvfrom(ping_sockfd, &pckt, sizeof(pckt), 0,
// (struct sockaddr*)&r_addr, &addr_len);
// if ( cnt <= 0 )
// {
// printf("\nPacket receive failed!\n");
// failure_cnt++;
// if(failure_cnt > 5){
// break;
// }
// }
//
// else
// {
// clock_gettime(CLOCK_MONOTONIC, &time_end);
//
// double timeElapsed = ((double)(time_end.tv_nsec -
// time_start.tv_nsec))/1000000.0;
// rtt_msec = (time_end.tv_sec-
// time_start.tv_sec) * 1000.0
// + timeElapsed;
//
// // if packet was not sent, don't receive
// if(flag)
// {
// struct icmp* icmp_hdr;
// if (cnt >= 76) {
// struct iphdr *iphdr = (struct iphdr *) &pckt;
// /* skip ip hdr */
// icmp_hdr = (struct icmp *) (((char* )&pckt) + (iphdr->ihl << 2));
// }
// if(icmp_hdr->icmp_type == ICMP_ECHO){
// goto REC;
// }
//
// if(!(icmp_hdr->icmp_type !=ICMP_ECHOREPLY) )
// {
// printf("Error..Packet received with ICMP"
// "type %d code %d\n",
// icmp_hdr->icmp_type, icmp_hdr->icmp_code);
// }
// else
// {
// printf("%d bytes from %s (h: %s)"
// "(%s) msg_seq=%d ttl=%d "
// "rtt = %Lf ms.\n",
// PING_PKT_S, ping_dom, rev_host,
// ping_ip, msg_count,
// ttl_val, rtt_msec);
//
// msg_received_count++;
// }
// }
// }
// }
// clock_gettime(CLOCK_MONOTONIC, &tfe);
// double timeElapsed = ((double)(tfe.tv_nsec -
// tfs.tv_nsec))/1000000.0;
//
// total_msec = (tfe.tv_sec-tfs.tv_sec)*1000.0+
// timeElapsed;
//
// printf("\n===%s ping statistics===\n", ping_ip);
// printf("\n%d packets sent, %d packets received, %f percent "
// "packet loss. Total time: %Lf ms.\n\n",
// msg_count, msg_received_count,
// ((msg_count - msg_received_count)/msg_count) * 100.0,
// total_msec);
//}
int main(int argc, char const *argv[]) {
pthread_t tL;
pthread_create( &tL, NULL, thListener, NULL);
log_init ();
msgList_init (&msgList);
bool b =true;
while (b) {
device_t d = { 0, NULL };
d.id = 43;
if (ping (&d)) printf ("found: 10.0.0.43\n");
else printf ("not found: 10.0.0.43\n");
d.id = 8997;
if (ping (&d)) printf ("found: 10.0.89.97\n");
else printf ("not found 10.0.89.97\n");
d.id = 7;
if (ping (&d)) printf ("found: 10.0.0.7\n");
else printf ("not found: 10.0.0.7\n");
d.id = 1;
if (ping (&d)) printf ("found: 10.0.0.1\n");
else printf ("not found: 10.0.0.1\n");
ping (NULL);
sleep (10);
}
while (b) { }
pthread_join( tL, NULL);
return 0;
}

+ 806
- 0
src/messenger.c View File

@@ -0,0 +1,806 @@
#define DEBUG
#define FU08 "%hhu"
#define FU16 "%hu"
#define FU32 "%lu"
#define FU64 "%llu"
#define FSTR "%s"
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <semaphore.h>
//--Tools Module
#include <time.h>
uint64_t TIME_u64Current(void) {
return time(NULL);
}
uint16_t RAND_u16GetNumber(uint16_t u16Min, uint16_t u16Max) {
static uint8_t i = 0;
if (i == 0) {
srand(time(NULL));
i++;
}
return rand() % (u16Max + 1 - u16Min) + u16Min;
}
//--Log Module
#include <stdarg.h>
sem_t semLog;
void LOG_vSetup(void) {
sem_init(&semLog, 0, 1);
}
void LOG_vPrintf(const char* format, ...) {
sem_wait(&semLog);
va_list args;
va_start(args, format);
#ifdef DEBUG
printf(FU64":", TIME_u64Current());
vprintf(format, args);
#endif
FILE* fp;
fp = fopen("/tmp/log.txt", "a");
if (fp != NULL) {
fprintf(fp, FU64":", TIME_u64Current());
vfprintf(fp, format, args);
fclose(fp);
}
va_end(args);
sem_post(&semLog);
}
//--File Module
#define FILE_EOF 0xFF
int8_t FILE_i08Compare(char* pchPath1, char* pchPath2) {
FILE* file1 = fopen(pchPath1, "r");
FILE* file2 = fopen(pchPath2, "r");
if (file1 == NULL) {
if (file2 != NULL)
fclose(file2);
return 1;
}
if (file2 == NULL) {
fclose(file1);
return 2;
}
char ch1, ch2;
do {
ch1 = fgetc(file1);
ch2 = fgetc(file2);
if (ch1 != ch2) {
fclose(file1);
fclose(file2);
return 0;
}
} while (ch1 != FILE_EOF && ch2 != FILE_EOF);
if (ch1 == FILE_EOF && ch2 == FILE_EOF) {
fclose(file1);
fclose(file2);
return 3;
}
else {
fclose(file1);
fclose(file2);
return 0;
}
}
//--WiFi Module
#define NETWORK_TYPE "wlan0"
#include <arpa/inet.h>
#include <sys/socket.h>
#define WIFI_BUFFER 2000
#include <pthread.h>
struct ParserArgs {
int sock;
struct sockaddr_in client_address;
socklen_t client_address_len;
bool (*bParse)(uint8_t* pu08Address, char* pchBuffer);
};
void WiFi_vParser(void* ptr) {
struct ParserArgs temp;
memcpy(&temp, ptr, sizeof(struct ParserArgs));
char pchRemoteAddress[INET_ADDRSTRLEN];
inet_ntop(AF_INET, &(temp.client_address.sin_addr), pchRemoteAddress, INET_ADDRSTRLEN);
//uint16_t pu16RemotePort = temp.client_address.sin_port;
char pchBuffer[WIFI_BUFFER];
char* pchTemp = (char*)pchBuffer;
int16_t i16New = 0;
uint16_t u16Length = 0;
uint16_t u16Remaining = WIFI_BUFFER;
while ((i16New = recv(temp.sock, pchTemp, u16Remaining, 0)) > 0) {
pchTemp += i16New;
u16Remaining -= i16New;
u16Length += i16New;
pchTemp[0] = '\0';
}
uint8_t pu08Levels[4];
sscanf(pchRemoteAddress, FU08"."FU08"."FU08"."FU08, &pu08Levels[0], &pu08Levels[1], &pu08Levels[2], &pu08Levels[3]);
temp.bParse(pu08Levels, pchBuffer);
close(temp.sock);
}
bool WiFi_bListener(int32_t i32ServerPort, bool (*bParse)(uint8_t* pu08Address, char* pchBuffer)) {
struct sockaddr_in server_address;
memset(&server_address, 0, sizeof(server_address));
server_address.sin_family = AF_INET;
server_address.sin_port = htons(i32ServerPort);
server_address.sin_addr.s_addr = htonl(INADDR_ANY);
int listen_sock;
if ((listen_sock = socket(PF_INET, SOCK_STREAM, 0)) == -1)
return false;
if ((bind(listen_sock, (struct sockaddr *)&server_address, sizeof(server_address))) == -1) {
close(listen_sock);
return false;
}
if (listen(listen_sock, WIFI_BUFFER) == -1) {
close(listen_sock);
return false;
}
while (true) {
LOG_vPrintf("WiFiListener-New\n");
struct ParserArgs client;
client.client_address_len = sizeof(client.client_address);
client.bParse = bParse;
LOG_vPrintf("WiFiListener-Start\n");
if ((client.sock = accept(listen_sock, (struct sockaddr *)&client.client_address, &client.client_address_len)) == -1) {
return false;
}
WiFi_vParser(&client);
LOG_vPrintf("WiFiListener-Stop\n");
}
close(listen_sock);
return true;
}
bool WiFi_bSend(char* pchServerAddress, int32_t i32ServerPort, char* pchServerText) {
LOG_vPrintf("WiFi-Send-Sock\n");
int sock;
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
LOG_vPrintf("WiFi-Send-Fail\n");
return false;
}
LOG_vPrintf("WiFi-Send-Init\n");
struct sockaddr_in server_address;
memset(&server_address, 0, sizeof(server_address));
server_address.sin_family = AF_INET;
server_address.sin_addr.s_addr = inet_addr(pchServerAddress);
server_address.sin_port = htons(i32ServerPort);
LOG_vPrintf("WiFi-Send-Connect\n");
if (connect(sock, (struct sockaddr*)&server_address, sizeof(server_address)) == -1) {
LOG_vPrintf("WiFi-Send-Fail\n");
close(sock);
return false;
}
LOG_vPrintf("WiFi-Send-Send\n");
if (send(sock, pchServerText, strlen(pchServerText), MSG_CONFIRM) == -1) {
LOG_vPrintf("WiFi-Send-NoConfirmation\n");
close(sock);
return false;
}
LOG_vPrintf("WiFi-Send-Close\n");
close(sock);
return true;
}
//--Messages Module
#define PAYLOAD_SIZE 256
#define PAYLOAD_DELIMITER '_'
#define MESSAGES_SIZE 2000
typedef struct tMessage {
uint32_t u32Sender;
uint32_t u32Receiver;
uint64_t u64Timestamp;
char pchMessage[PAYLOAD_SIZE];
bool bDone;
uint32_t* pu32Sent;
uint32_t u32Sent;
} sMessage;
typedef struct tMessages {
uint32_t u32Owner;
sMessage psArray[MESSAGES_SIZE];
uint16_t u16ArrayIndex;
bool bFull;
uint32_t u32CheckedMessages;
uint32_t u32LoggedMessages;
sem_t semAccess;
} sMessages;
void MSG_vSetup(sMessages* psMessages, uint32_t u32Owner) {
sem_init(&psMessages->semAccess, 0, 1);
psMessages->u32Owner = u32Owner;
psMessages->u16ArrayIndex = 0;
psMessages->bFull = false;
psMessages->u32CheckedMessages = 0;
psMessages->u32LoggedMessages = 0;
}
static inline sMessage* MSG_mGet(sMessages* psMessages, uint16_t u16Index) {
//sem_wait(&semMessages);
sMessage* temp;
if (psMessages->bFull) {
temp = &psMessages->psArray[(psMessages->u16ArrayIndex + u16Index) % MESSAGES_SIZE];
} else
temp = &psMessages->psArray[u16Index];
//sem_post(&semMessages);
return temp;
}
static inline uint16_t MSG_u16Length(sMessages* psMessages) {
//sem_wait(&semMessages);
uint16_t temp;
if (psMessages->bFull)
temp = MESSAGES_SIZE;
else
temp = psMessages->u16ArrayIndex;
//sem_post(&semMessages);
return temp;
}
void MSG_vInsert(sMessages* psMessages, sMessage* psMessage, bool bSent, uint32_t u32Device) {
sem_wait(&psMessages->semAccess);
psMessages->psArray[psMessages->u16ArrayIndex].u32Sender = psMessage->u32Sender;
psMessages->psArray[psMessages->u16ArrayIndex].u32Receiver = psMessage->u32Receiver;
psMessages->psArray[psMessages->u16ArrayIndex].u64Timestamp = psMessage->u64Timestamp;
psMessages->psArray[psMessages->u16ArrayIndex].bDone = (psMessage->u32Receiver == psMessages->u32Owner);
memcpy(psMessages->psArray[psMessages->u16ArrayIndex].pchMessage, psMessage->pchMessage, strlen(psMessage->pchMessage));
if (bSent) {
psMessages->psArray[psMessages->u16ArrayIndex].u32Sent = 1;
psMessages->psArray[psMessages->u16ArrayIndex].pu32Sent = (uint32_t*)malloc(1 * sizeof(uint32_t));
psMessages->psArray[psMessages->u16ArrayIndex].pu32Sent[0] = u32Device;
}
else
psMessages->psArray[psMessages->u16ArrayIndex].u32Sent = 0;
psMessages->u16ArrayIndex = (psMessages->u16ArrayIndex + 1) % MESSAGES_SIZE;
if (psMessages->u16ArrayIndex == 0)
psMessages->bFull = true;
psMessages->u32LoggedMessages++;
sem_post(&psMessages->semAccess);
}
bool MSG_bCheck(sMessages* psMessages, sMessage* psMessage) {
sem_wait(&psMessages->semAccess);
uint16_t u16ArrayLength = MSG_u16Length(psMessages);
bool flag = false;
for (uint16_t i = 0; i < u16ArrayLength; i++) {
sMessage* temp = MSG_mGet(psMessages, i);
if (temp->u32Sender != psMessage->u32Sender)
continue;
if (temp->u32Receiver != psMessage->u32Receiver)
continue;
if (temp->u64Timestamp != psMessage->u64Timestamp)
continue;
if (strcmp(temp->pchMessage, psMessage->pchMessage) != 0)
continue;
flag = true;
break;
}
psMessages->u32CheckedMessages++;
sem_post(&psMessages->semAccess);
return flag;
}
bool MSG_bParse(sMessage* psMessage, char* pchBuffer) {
char* pchArrays[4];
bool bFlag = false;
uint16_t i;
char* s = pchBuffer;
for (i = 0; s[i]; s[i] == PAYLOAD_DELIMITER ? i++ : *s++);
if (i != 3)
return false;
char* pchRest = pchBuffer;
for (uint8_t i = 0; i < 3; i++) {
const char s[2] = { PAYLOAD_DELIMITER, '\0'};
pchArrays[i] = strtok(pchRest, s);
if (pchArrays[i] == NULL) {
bFlag = true;
break;
} else {
pchRest += strlen(pchRest) + 1;
}
}
pchArrays[3] = pchRest;
if (!bFlag) {
psMessage->u32Sender = atoi(pchArrays[0]);
psMessage->u32Receiver = atoi(pchArrays[1]);
psMessage->u64Timestamp = atoi(pchArrays[2]);
strcpy(psMessage->pchMessage, pchArrays[3]);
}
return (!bFlag);
}
void MSG_vExport(sMessages* psMessages) {
sem_wait(&psMessages->semAccess);
uint16_t u16ArrayLength = MSG_u16Length(psMessages);
FILE* file = fopen("/tmp/messages.txt", "w");
if (file == NULL) {
sem_post(&psMessages->semAccess);
return;
}
fprintf(file, "Checked:"FU32"\n", psMessages->u32CheckedMessages);
fprintf(file, "Logged:"FU32"\n", psMessages->u32LoggedMessages);
fprintf(file, "Index:"FU32"\n", psMessages->u16ArrayIndex);
fprintf(file, "index:sender_receiver_timestamp_message:sent:done\n");
for (uint16_t i = 0; i < u16ArrayLength; i++) {
sMessage* temp = MSG_mGet(psMessages, i);
fprintf(file, FU16":"FU32"_"FU32"_"FU64"_"FSTR":"FU32":"FU08"\n", i, temp->u32Sender, temp->u32Receiver, temp->u64Timestamp, temp->pchMessage, temp->u32Sent, (temp->bDone ? 1 : 0));
}
fclose(file);
sem_post(&psMessages->semAccess);
}
void MSG_vSend(sMessages* psMessages, uint32_t u32Receiver, bool (*bSend)(char* pchBuffer)) {
sem_wait(&psMessages->semAccess);
uint16_t u16Length;
if (psMessages->bFull)
u16Length = MESSAGES_SIZE;
else
u16Length = psMessages->u16ArrayIndex;
for (uint16_t i = 0; i < u16Length; i++) {
sMessage* temp = MSG_mGet(psMessages, i);
bool bFlag = false;
if (temp->bDone)
bFlag = true;
else {
for (uint32_t j = 0 ; j < temp->u32Sent; j++) {
if (temp->pu32Sent[j] == u32Receiver) {
bFlag = true;
break;
}
}
}
if (bFlag)
continue;
else {
LOG_vPrintf("Message-Send-"FU32"-Start\n", i);
char pchBuffer[5 + 5 + 3 + 10 + 256];
sprintf(pchBuffer, FU32"_"FU32"_"FU64"_"FSTR, temp->u32Sender, temp->u32Receiver, temp->u64Timestamp, temp->pchMessage);
LOG_vPrintf("Message-Send-"FU32"-Send\n", i);
if (bSend(pchBuffer)) {
if (temp->u32Sent == 0)
temp->pu32Sent = (uint32_t*)malloc(1 * sizeof(uint32_t));
else
temp->pu32Sent = (uint32_t*)realloc(temp->pu32Sent, (temp->u32Sent + 1) * sizeof(uint32_t));
temp->pu32Sent[temp->u32Sent] = u32Receiver;
temp->u32Sent++;
temp->bDone = (temp->u32Receiver == u32Receiver);
} else {
LOG_vPrintf("Message-Send-"FU32"-Error\n", i);
}
LOG_vPrintf("Message-Send-"FU32"-Stop\n", i);
}
}
sem_post(&psMessages->semAccess);
}
sMessages sMessagesList;
//--Devices Module
#define DEVICES_SIZE 100
typedef struct tDevice {
uint32_t u32Id;
bool bActive;
uint64_t u64Start;
uint64_t u64Last;
} sDevice;
typedef struct tDevices {
sDevice psArray[DEVICES_SIZE];
uint16_t u16ArrayIndex;
bool bFull;
sem_t semAccess;
} sDevices;
void DVC_vSetup(sDevices* psDevices) {
sem_init(&psDevices->semAccess, 0, 1);
psDevices->u16ArrayIndex = 0;
psDevices->bFull = false;
}
void DVC_vInsert(sDevices* psDevices, uint16_t u32Id) {
//sem_wait(&semDevices);
psDevices->psArray[psDevices->u16ArrayIndex].u32Id = u32Id;
psDevices->psArray[psDevices->u16ArrayIndex].bActive = true;
psDevices->psArray[psDevices->u16ArrayIndex].u64Start = TIME_u64Current();
psDevices->psArray[psDevices->u16ArrayIndex].u64Last = 0;
psDevices->u16ArrayIndex = (psDevices->u16ArrayIndex + 1) % DEVICES_SIZE;
if (psDevices->u16ArrayIndex == 0)
psDevices->bFull = true;
//sem_post(&semDevices);
}
uint16_t DVC_u16Update(sDevices* psDevices, uint32_t* pu32Id, uint16_t u16IdSize, uint32_t* pu32New) {
sem_wait(&psDevices->semAccess);
uint16_t u16ArrayLength;
if (psDevices->bFull)
u16ArrayLength = DEVICES_SIZE;
else
u16ArrayLength = psDevices->u16ArrayIndex;
bool pbFlag[u16IdSize];
for (uint16_t j = 0; j < u16IdSize; j++) {
pbFlag[j] = false;
}
for (uint16_t i = 0; i < u16ArrayLength; i++) {
bool bFlag = false;
for (uint16_t j = 0; j < u16IdSize; j++) {
if (psDevices->psArray[i].u32Id == pu32Id[j]) {
bFlag = true;
pbFlag[j] = true;
break;
}
}
if (bFlag) {
if (psDevices->psArray[i].bActive)
psDevices->psArray[i].u64Last = TIME_u64Current();
else {
psDevices->psArray[i].bActive = true;
psDevices->psArray[i].u64Start = TIME_u64Current();
psDevices->psArray[i].u64Last = 0;
}
} else {
psDevices->psArray[i].bActive = false;
}
}
uint16_t u16Cnt = 0;
for (uint16_t j = 0; j < u16IdSize; j++) {
if (!pbFlag[j]) {
DVC_vInsert(psDevices, pu32Id[j]);
pu32New[u16Cnt] = pu32Id[j];
u16Cnt++;
}
}
sem_post(&psDevices->semAccess);
return u16Cnt;
}
void DVC_vExport(sDevices* psDevices) {
sem_wait(&psDevices->semAccess);
uint16_t u16ArrayLength;
if (psDevices->bFull)
u16ArrayLength = DEVICES_SIZE;
else
u16ArrayLength = psDevices->u16ArrayIndex;
FILE* file = fopen("/tmp/devices.txt", "w");
if (file == NULL) {
sem_post(&psDevices->semAccess);
return;
}
fprintf(file, FU32"\n", psDevices->u16ArrayIndex);
fprintf(file, "index:active,id,start,stop\n");
for (uint16_t i = 0; i < u16ArrayLength; i++)
fprintf(file, FU32":"FSTR","FU32","FU64","FU64"\n", i, psDevices->psArray[i].bActive ? "true" : "false", psDevices->psArray[i].u32Id, psDevices->psArray[i].u64Start, psDevices->psArray[i].u64Last);
fclose(file);
sem_post(&psDevices->semAccess);
}
sDevices sDevicesList;
//--Timer Module
#include <signal.h>
#include <sys/time.h>
typedef struct tInterrupt {
bool bRunning;
uint32_t u32Ticks;
void (*vCallback)(uint32_t);
} sInterrupt;
sInterrupt sTimer;
void TMR_vHandler(int sig) {
static uint32_t i = 0;
sTimer.vCallback(i - 1);
i++;
if (sTimer.u32Ticks > 0 && i >= sTimer.u32Ticks) {
struct itimerval sInterval = {0};
setitimer(ITIMER_REAL, &sInterval, NULL);
sTimer.bRunning = false;
}
}
bool TMR_bSetup(suseconds_t susInterval, void (*vCallback)(uint32_t)) {
sTimer.vCallback = vCallback;
sTimer.u32Ticks = 0;
sTimer.bRunning = true;
signal(SIGALRM, TMR_vHandler);
struct itimerval sInterval;
sInterval.it_interval.tv_usec = susInterval % 1000000;
sInterval.it_interval.tv_sec = susInterval / 1000000;
sInterval.it_value = sInterval.it_interval;
if (setitimer(ITIMER_REAL, &sInterval, NULL) != 0)
return false;
return true;
}
//--High Level Application
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#define AEM 8844
#define SERVER_PORT 2288
#define INTERRUPTS
#ifdef INTERRUPTS
sem_t semSearcher;
#endif
const uint32_t pu32FriendsList[] = {7000, 7001, 7002, 7003, 8845};
const uint8_t u08FriendsSize = 5;
#define CREATE_PERIOD_MIN 1 //secs
#define CREATE_PERIOD_MAX 1 //secs
//#define CREATE_PERIOD_MIN 1*60 //secs
//#define CREATE_PERIOD_MAX 5*60 //secs
uint32_t u32Selector(void) {
static uint32_t count = 0;
count++;
uint8_t index = RAND_u16GetNumber(0, u08FriendsSize - 1);
sMessage temp;
temp.u32Sender = AEM;
temp.u32Receiver = pu32FriendsList[index];
temp.u64Timestamp = TIME_u64Current();
sprintf(temp.pchMessage, "I am message #%d of GKyri", count);
temp.u32Sent = 0;
LOG_vPrintf("Selector-Insert\n");
MSG_vInsert(&sMessagesList, &temp, false, 0);
/*
LOG_vPrintf("Selector-Export\n");
MSG_vExport(&sMessagesList);
*/
return pu32FriendsList[index];
}
void APP_vCallback(uint32_t u32Tick) {
static bool bRunning = false;
if (!bRunning) {
bRunning = true;
LOG_vPrintf("Callback-Start\n");
u32Selector();
LOG_vPrintf("Callback-Stop\n");
#ifdef INTERRUPTS
sem_post(&semSearcher);
#endif
bRunning = false;
}
}
void APP_vCreator(void) {
uint16_t u16Interval = RAND_u16GetNumber(CREATE_PERIOD_MIN, CREATE_PERIOD_MAX);
if (TMR_bSetup(500000, APP_vCallback)) {
//if (TMR_bSetup(u16Interval * 1000000, APP_vCallback)) {
while (true)
pause();
}
}
bool APP_bReceiveBuffer(uint8_t* pu08Address, char* pchBuffer) {
LOG_vPrintf("Receiver-Start\n");
uint32_t u32Id = (uint32_t)pu08Address[2] * 100 + pu08Address[3];
sMessage temp;
if (!MSG_bParse(&temp, pchBuffer))
return false;
temp.u32Sent = 0;
if (!MSG_bCheck(&sMessagesList, &temp)) {
LOG_vPrintf("Receiver-Insert\n");
MSG_vInsert(&sMessagesList, &temp, true, u32Id);
/*
LOG_vPrintf("Receiver-Export\n");
MSG_vExport(&sMessagesList);
*/
}
LOG_vPrintf("Receiver-Stop\n");
#ifdef INTERRUPTS
sem_post(&semSearcher);
#endif
return true;
}
void APP_vListener(void) {
WiFi_bListener(SERVER_PORT, APP_bReceiveBuffer);
}
char pchMessageReceiver[15 + 1];
bool APP_bSendBuffer(char* pchBuffer) {
return WiFi_bSend(pchMessageReceiver, SERVER_PORT, pchBuffer);
}
bool APP_bSender(uint32_t u32Receiver) {
sprintf(pchMessageReceiver, "10.0."FU08"."FU08, u32Receiver / 100, u32Receiver % 100);
char pchTest[13 + 15 + 12 + 1];
sprintf(pchTest, "ping -c1 -w1 "FSTR" > /dev/null", pchMessageReceiver);
if (system(pchTest) == 0) {
MSG_vSend(&sMessagesList, u32Receiver, APP_bSendBuffer);
return true;
} else {
return false;
}
}
#define SEARCHER_SLEEP_PERIOD 60 //secs
#define SEARCHER_SLEEP_DELAY 30 //secs
void APP_vSearcher(void) {
#ifdef INTERRUPTS
sem_init(&semSearcher, 0, 0);
#endif
sleep(SEARCHER_SLEEP_PERIOD);
while (true) {
LOG_vPrintf("Searcher-Start\n");
uint16_t u16Cnt = 0;
uint32_t* pu32Id = (uint32_t*)malloc(1 * sizeof(uint32_t));
for (uint8_t i = 0; i < u08FriendsSize; i++) {
uint32_t u32Receiver = pu32FriendsList[i];
sprintf(pchMessageReceiver, "10.0."FU08"."FU08, u32Receiver / 100, u32Receiver % 100);
char pchTest[13 + 15 + 12 + 1];
sprintf(pchTest, "ping -c1 -w1 "FSTR" > /dev/null", pchMessageReceiver);
if (system(pchTest) == 0) {
pu32Id[u16Cnt] = u32Receiver;
u16Cnt++;
pu32Id = (uint32_t*)realloc(pu32Id, (u16Cnt + 1) * sizeof(uint32_t));
}
}
LOG_vPrintf("Searcher-Send-Start\n");
uint32_t pu32New[u16Cnt];
//uint16_t u16NewLength = DVC_u16Update(&sDevicesList, pu32Id, u16Cnt, pu32New);
DVC_u16Update(&sDevicesList, pu32Id, u16Cnt, pu32New);
for (uint16_t i = 0; i < u16Cnt; i++) {
LOG_vPrintf("Searcher-Send-"FU32"-Start\n", i);
APP_bSender(pu32Id[i]);
LOG_vPrintf("Searcher-Send-"FU32"-Stop\n", i);
}
free(pu32Id);
LOG_vPrintf("Searcher-Send-Stop\n");
LOG_vPrintf("Searcher-Export\n");
DVC_vExport(&sDevicesList);
MSG_vExport(&sMessagesList);
LOG_vPrintf("Searcher-Stop\n");
#ifdef INTERRUPTS
for (uint16_t i = 0; i < SEARCHER_SLEEP_PERIOD; i++) {
int value;
sem_getvalue(&semSearcher, &value);
if (value > 0) {
if (i > SEARCHER_SLEEP_DELAY) {
LOG_vPrintf("Searcher-Interrupt\n");
sem_wait(&semSearcher);
break;
}
}
sleep(1);
}
#else
sleep(SLEEP_PERIOD);
#endif
}
}
void APP_vSetup(void){
int8_t i08Result;
bool bFlag = false;
i08Result = FILE_i08Compare("/root/wpa_supplicant.conf", "/etc/wpa_supplicant/wpa_supplicant.conf");
if (i08Result == 0 || i08Result == 2) {
bFlag = true;
LOG_vPrintf("Replacing 'wpa_supplicant'\n");
system("sudo cp /root/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf");
}
i08Result = FILE_i08Compare("/root/interfaces", "/etc/network/interfaces");
if (i08Result == 0 || i08Result == 2) {
bFlag = true;
LOG_vPrintf("Replacing 'interfaces'\n");
system("sudo cp /root/interfaces /etc/network/interfaces");
}
i08Result = FILE_i08Compare("/root/messenger.service", "/etc/systemd/system/messenger.service");
if (i08Result == 0 || i08Result == 2) {
bFlag = true;
LOG_vPrintf("Replacing 'messenger.service'\n");
system("sudo cp /root/messenger.service /etc/systemd/system");
system("systemctl enable messenger");
}
if (bFlag) {
LOG_vPrintf("Restarting\n");
system("shutdown -r 0");
exit(EXIT_SUCCESS);
}
}
void* Th1Func(void* ptr) {
APP_vListener();
return NULL;
}
void* Th2Func(void* ptr) {
APP_vCreator();
return NULL;
}
void* Th3Func(void* ptr) {
APP_vSearcher();
return NULL;
}
int main( int argc, char* const* argv) {
APP_vSetup();
LOG_vSetup();
MSG_vSetup(&sMessagesList, AEM);
DVC_vSetup(&sDevicesList);
pthread_t thread1, thread2, thread3;
pthread_create( &thread1, NULL, Th1Func, NULL);
pthread_create( &thread2, NULL, Th2Func, NULL);
pthread_create( &thread3, NULL, Th3Func, NULL);
pthread_join( thread1, NULL);
pthread_join( thread2, NULL);
pthread_join( thread3, NULL);
return EXIT_SUCCESS;
}

+ 204
- 0
src/msg_impl.h View File

@@ -0,0 +1,204 @@
/*!
* \file msg_impl.h
*
* Contain all the implementation specific types
*
* \author: Christos Choutouridis 8997 <cchoutou@ece.auth.gr>
*/
#ifndef __msg_impl__
#define __msg_impl__
#include <stdint.h>
#include <stdbool.h>
#include <time.h>
#include <netinet/ip_icmp.h>
/*!
* General options
*/
//! @{
#define LISTENER_PORT 2288 //!< The server port
#define MSG_TEXT_SIZE 256 //!< Maximum size of each message
#define MSG_LIST_SIZE 2000 //!< Maximum size of message history buffer
#define DEVICE_LIST_SIZE 100 //!< Maximum size of the device list
#define MSG_DELIMITER '_' //!< Message delimiter
#define ADHOC_NET_A 10 //!< [A.B.C.D]
#define ADHOC_NET_B 0
#define ADHOC_NET_C 0
#define ADHOC_NET_D 0
//#define NO_DEBUG 1
//! @}
/*!
* Helper macros
*/
#define _MK_ADHOC_SUBNET(A, B, C, D) (((A)<<24) | ((B)<<16) | ((C)<<8) | (D))
#define _adhoc_subnet _MK_ADHOC_SUBNET(ADHOC_NET_A, ADHOC_NET_B, ADHOC_NET_C, ADHOC_NET_D)
/*!
* Messenger types
*/
//! @{
/*!
* Application status type
*/
typedef enum {
MSG_OK =0, //!< Indicate success
MSG_ERROR //!< Indicate error
} status_t;
typedef bool bool_t; //!< Boolean type
typedef char char_t; //!< Application wide character type
typedef uint32_t aem_t; //!< AEM data type
typedef int64_t tstamp_t; //!< UNIX time in 64 bit wide signed integer
/*!
* IP wrapper type
*/
typedef struct {
uint16_t A, B, C, D;
}devIP_t;
/*!
* A RTES node device representation
* \note
* Objects of this type are also acting as fwd list nodes.
*/
typedef struct device {
aem_t id; //!< AEM of the device
struct device* next; //!< link to the next linked device on the chain
} device_t;
typedef device_t* devList_t; //!< device list alias
/*!
* \brief
* Core message representation as it described in the requirements
*
* Object of this type constructed upon creation or when receiving a message.
* \note
* associate functions -- mutable-like interface:
* \sa cMsg_parse() used for parsing and creation
* \sa cMsg_getFromAEM() used as fromAEM getter
* \sa cMsg_getToAEM() used as toAEM getter
* \sa cMsg_getTs() used as timestamp getter
* \sa cMsg_getText() used as text getter
*/
typedef struct {
aem_t from; //!< sender's AEM
aem_t to; //!< destination AEM
tstamp_t ts; //!< UNIX timestamp compatible
size_t text; //!< text offset
char_t msg[MSG_TEXT_SIZE]; //!< The actual message stream
} cMsg_t;
/*!
* \brief
* Mid and application layer message representation
*
* This type
*/
typedef struct {
device_t sender; //!< The sender's device
devList_t recipients; //!< List of all devices the message has reach
cMsg_t cMsg; //!< actual message payload
} msg_t;
typedef int32_t mIter_t; //!< message list iterator type
/*!
* \brief Message list
*
* This holds the last \a MSG_LIST_SIZE messages exchanged from this
* device(including the ones we have create).
*
* With this we create a 2 dimensional map of msg/dev where each item
* of the list is linked with all the devices reached by us as a fwd-list.
* The items on the msgList are:
* - Messages we create
* - Messages received by the listener
*
* Here we define 2 directions for iteration. The message direction and the device
* direction.
*
* Every node on the msgList.m array represents a message. Every node in the device
* list inside msgList[m].recipients represent devices we don't anymore need to send
* the current message to them.
*
* Layout example:
*
* msgList.m
* [ 0 ] --> [devx] --> [devy] -- >0
* | [ 1 ] --> [devy] -- > 0
* time | [ 2 ] --> 0
* [*1] | [ 3 ] ...
* \|/
* ...
*
* [MAX]
*
* [*1]: msgList is actually implemented as a ring buffer so in that
* content, "time is a loop".
*/
typedef struct {
msg_t m[MSG_LIST_SIZE]; //!< The actual data representation
mIter_t last; //!< A ring buffer iterator marking the last item on .m
size_t size;
} msgList_t;
//! @}
/*!
* Client types
*/
//! @{
#define PING_PKT_S (64)
#define PING_MSG_S (PING_PKT_S - sizeof(struct icmphdr))
typedef struct {
struct icmphdr hdr;
char msg[PING_MSG_S];
}ping_pkt_t;
//! @}
/*!
* Application settings
*/
//! @{
typedef enum {
OUTLEVEL_0, //!< Output only results [default]
OUTLEVEL_1, //!< Output results and every message also
OUTLEVEL_2 //!< Debug level, use with care!
}outLevel_en;
typedef struct {
uint16_t port;
time_t duration;
time_t msgInterval;
outLevel_en outLevel;
}settings_t;
extern settings_t settings;
#define settings_init(s) s = { \
.port = 2288, \
.duration = 7200, \
.msgInterval = 60, \
.outLevel = OUTLEVEL_1 \
}
//! @}
#endif /* __msg_impl__ */

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