cfdp_get_example_1/main.c

// ////////////////////////////////////////////////////////////////////////////
//
// Sample program creates a 3MB file data file.  This files is created and 
// transferred from/to its home/user directory via the cfdp_destination 
// application.  The program uses the GetComponentCFDP API function.  The 
// destination file is renamed with a time tag extension and the source file
// is deleted. Calls the MonitorTransactions example function to the monitor 
// CFDP transaction using the PopulateCFDPStructArray function.
//
// Main with optional input defining pathname for the CFDP configuration file.  
// The default CFDP configuration file pathname is 
// "./cfdp_get_example_1_config.txt".
// 
// The "cfdp_destination" example be must running prior to starting this example.
//
// ////////////////////////////////////////////////////////////////////////////

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/timeb.h>
#include <string.h>
#include "ds_shared.h"
#include "cfdp_shared.h"
#include "trek_error.h"
#include "toolkit_ds_api_error_codes.h"
#include "trek_toolkit_common_api_ansi_c.h"
#include "toolkit_cfdp_api_ansi_c.h"
#include "toolkit_ds_api_ansi_c.h"
#ifdef __linux__
#include <unistd.h>
#else
#include <windows.h>
#endif

unsigned int message_mask;

// ////////////////////////////////////////////////////////////////////////////
//
// PrintTheMessage controls how messages are processed and displayed to 
// the user.
//
// ////////////////////////////////////////////////////////////////////////////

void PrintTheMessage(message_struct_type *mess_struct_ptr)
{
    if (mess_struct_ptr->category & message_mask)
    {
        printf("%s%s\n",GetMessageCategoryAsPaddedString(mess_struct_ptr->category),
                mess_struct_ptr->message);
    }
}

// ////////////////////////////////////////////////////////////////////////////
//
// DeviceData's packet_buffer_ptr processes a cfdp_struct ptr defined as 
// follows:
//
// char           source_pathname[200];
// char           destination_pathname[200];
// long long      eid;                      (destination)
// char           transaction_id[50];
// unsigned short percent_transferred;
// unsigned long  bytes_transferred;
// unsigned long  file_size;
// unsigned long  cfdp_configuration; (e.g., DS_DEVICE_SENDING, 
//                                           DS_DEVICE_RECEIVING)
// unsigned long  cfdp_status;        (e.g., DS_PACKET_SENDING, 
//                                           DS_PACKET_RECEIVING,
//                                           DS_SUSPEND, DS_RESUME, 
//                                           DS_REPORT, 
//                                           DS_CANCEL, 
//                                           DS_SUCCESS, 
//                                           DS_FAIL, 
//                                           DS_ABANDON, 
//                                           DS_UNKNOWN)
//
// The cfdp_struct can be used to determine each file's transactions ID as  
// well as monitor a file's transfer status.
//
// ////////////////////////////////////////////////////////////////////////////

void DeviceData(const char      *device_key, 
                int             packet_length, 
                unsigned char   *packet_buffer_ptr)
{
    unsigned int count;
    cfdp_struct_type *cfdp_struct_ptr;
    // Retrieve the individual cfdp structs from the packet_buffer;
    for (count = 0; count*sizeof(cfdp_struct_type) < (unsigned int)packet_length; count++)
    {
        cfdp_struct_ptr = (cfdp_struct_type *)(packet_buffer_ptr + count*sizeof(cfdp_struct_type));
        if (cfdp_struct_ptr->cfdp_status == DS_MESSAGE) // print proxy put (get) response message
        {
            // Print message
            printf("Message  %s\n",cfdp_struct_ptr->message);
        }
        else if (message_mask & MSG_CAT_PROGRESS)
        {
            printf("Progress Transaction_id %s -> %s\t file size=%lld\t bytes trans=%lld\t percent trans=%u%%\n",
                    cfdp_struct_ptr->transaction_id,
                    cfdp_struct_ptr->destination_pathname,
                    cfdp_struct_ptr->file_size,
                    cfdp_struct_ptr->bytes_transferred,
                    cfdp_struct_ptr->percent_transferred);
        }
    }
}

// ////////////////////////////////////////////////////////////////////////////
//
// CreateDataFile creates a binary file with the specified pathname and size.
//
// ////////////////////////////////////////////////////////////////////////////

int CreateDataFile(char         *pathname,
                   unsigned int file_size)
{
    FILE *file_ptr = NULL;
    char fill_data[250];
    unsigned int i;
    if ((file_ptr = fopen(pathname,"wb")) == NULL)
    {
        printf("Error    Failed to open example data file.\n");
        return(FAIL);
    }
    else
    {
        // Write to data file.
        memset(fill_data,0xfe,sizeof(fill_data));
        for (i = 0; i < file_size; i+=sizeof(fill_data))
            fwrite(fill_data,1,sizeof(fill_data),file_ptr);
        fflush(file_ptr);
        fclose(file_ptr);
    }
    return(SUCCESS);
}

// ////////////////////////////////////////////////////////////////////////////
//
// InitExampleDataFiles creates a 3MB example data file and returns the 
// appropriate source and destination pathnames.
//
// ////////////////////////////////////////////////////////////////////////////

int InitExampleDataFiles(char *pathname3MB,
                         char *destination_pathname3MB)
{
    struct timeb timebuffer;
    char home_path[256];

    if (TCAACGetHomeDirectory(home_path,sizeof(home_path)) != SUCCESS)
    {
        return(FAIL);
    }

    // Create a 3MB example data files. 
    ftime(&timebuffer);
    sprintf(pathname3MB, "%s/get_example_1_data_file_3MB",home_path);
    if (CreateDataFile(pathname3MB,3000000) == FAIL)
    {
        return(FAIL);
    }
    // Create a destination time tag appended file name.
    sprintf(destination_pathname3MB,"%s_%u",pathname3MB,
           (unsigned int)timebuffer.time);
    return(SUCCESS);
}

// ////////////////////////////////////////////////////////////////////////////
//
// MonitorTransactions provides an example on how to monitor CFDP transactions 
// using the PopulateCFDPStructArray function. It returns upon completion of all 
// transactions. If a transaction fails an error message is printed to the 
// screen.
//
// NOTE: The cfdp config file "support_cfdp_status_requests" parameter must 
// be "true" to support transaction status monitoring.
//
// ////////////////////////////////////////////////////////////////////////////

int MonitorTransactions(unsigned int     monitor_timeout,
                        unsigned int transaction_count)
{
    int return_value;
    unsigned int current_transaction_count = 0;
    unsigned int final_transaction_count = transaction_count;
    unsigned int number_of_cfdp_structs = 0;
    cfdp_struct_type *cfdp_struct_array_ptr = NULL;
    struct timeb start_timebuffer;
    struct timeb current_timebuffer;
    unsigned int i;

    // Start timer.
    ftime(&start_timebuffer);

    // Allocate memory for the cfdp_struct_array.
    cfdp_struct_array_ptr=(cfdp_struct_type *)malloc(final_transaction_count * 
                           sizeof(cfdp_struct_type));

    // Wait for transaction to complete by checking to see if the transaction 
    // is still being processed using GetCFDPStructArray. 
    while (current_transaction_count != final_transaction_count)
    {
        // Set the number_of_cfdp_structs equal to the number of structs 
        // availiable in the array (i.e., every transaction will have a 
        // corresponding cfdp_struct in the array). 
        number_of_cfdp_structs = final_transaction_count;
        // Get an array of the current CFDP transactions 
        if ((return_value = PopulateCFDPStructArray(&number_of_cfdp_structs,
                            cfdp_struct_array_ptr)) == DS_ARRAY_SIZE_ERROR)
        {
            // The cfdp_struct_array is not large enough to hold the current 
            // number of cfdp structs so allocate additional memory 
            // using the correct number_of_cfdp_structs returned by the 
            // GetCFDPStructArray function. 
            free(cfdp_struct_array_ptr);
            cfdp_struct_array_ptr = 
                (cfdp_struct_type *)malloc(number_of_cfdp_structs * 
                                           sizeof(cfdp_struct_type));
            // Reset the final_transaction_count. 
            final_transaction_count = number_of_cfdp_structs;
            return_value = PopulateCFDPStructArray(&number_of_cfdp_structs,
                                                   cfdp_struct_array_ptr);
        }

        if (return_value == SUCCESS)
        {
            // Loop through the array 
            for (i=0; i<number_of_cfdp_structs; i++)
            {
                // Check to see if the transaction has completed the file 
                // transfer attempt .
                if (cfdp_struct_array_ptr[i].cfdp_status == DS_CANCEL ||
                    cfdp_struct_array_ptr[i].cfdp_status == DS_SUCCESS || 
                    cfdp_struct_array_ptr[i].cfdp_status == DS_FAIL || 
                    cfdp_struct_array_ptr[i].cfdp_status == DS_ABANDON || 
                    cfdp_struct_array_ptr[i].cfdp_status == DS_UNKNOWN)
                {
                    // Check for unsuccessful file transfer status 
                    // (e.g.,DS_CANCEL, DS_FAIL, DS_ABANDON, DS_UNKNOWN).
                    if (cfdp_struct_array_ptr[i].cfdp_status != DS_SUCCESS)
                    {
                        // Take appropriate action.
                        printf("Info     Failed to execute put file for destination pathname: %s and eid: %d.\n", 
                                cfdp_struct_array_ptr[i].destination_pathname,
                                (int)cfdp_struct_array_ptr[i].eid);
                    }
                    // Increment count of completed transactions.
                    current_transaction_count += 1;
                }
            }
            // Sleep 1 second prior to checking status.
            #ifdef __linux__
            sleep(1);
            #else
            Sleep(1000);
            #endif
            ftime(&current_timebuffer);
            if (current_timebuffer.time - start_timebuffer.time > 
                monitor_timeout)
            {
                return_value = FAIL;
                printf("Error    CFDP monitor transaction timeout.\n");
                current_transaction_count= final_transaction_count;
            }
        }
        else
        {
            // Error getting CFDP status 
            return_value = FAIL;
            printf("Error    Failed to GetCFDPStructArray.\n");
            current_transaction_count = final_transaction_count;
        }
    }
    free(cfdp_struct_array_ptr);
    return(return_value);
}

// ////////////////////////////////////////////////////////////////////////////
//
// Main with optional input defining pathname for the CFDP configuration file.
// The default CFDP configuration file pathname 
// is "./cfdp_get_example_1_config.txt".
//
// Sample program creates a 3MB file data file.  This file is created and 
// transferred from/to its home/user directory via the cfdp_destination 
// application.  This program uses the GetComponentCFDP API function.  
// The destination file is renamed with a time tag extension and the source 
// file is deleted. Calls the MonitorTransactions example function to the monitor 
// CFDP transaction using the PopulateCFDPStructArray function. 
// 
// The "cfdp_destination" example must running prior to starting this example.
//
// ////////////////////////////////////////////////////////////////////////////

int main(int argc, char *argv[])
{ 
    char pathname[256];
    char pathname3MB[256];
    char destination_pathname3MB[256];
    long long eid;
    unsigned int transaction_count;
    unsigned int timeout_in_sec;

    char log_path[256];
    char log_filename[256];

    // Intialize message mask to print error messages.
    message_mask = MSG_CAT_ERROR;

    // Set default CFDP config_pathname.
    strcpy (pathname, "./cfdp_get_example_1_config.txt");
    if (argc == 2)
    {
        strcpy(pathname,argv[1]);
    }
    else if (argc > 2)
    {
        printf("Error    Command line contains too many arguments.\n");
        return 0;
    }


    
    strcpy(log_path,"");
    strcpy(log_filename,"cfdp_get_example_1_log_file");
    StartLoggingCFDPMessages(log_path,
                             log_filename,
                             FALSE_OR_NO);



    // Register the PrintMessage callback function prior to InitToolkitCfdp
    // to process error messages that may be generated during CFDP 
    // initialization. 
    RegisterMessage(&PrintTheMessage);

    // Initialize CFDP. This funcition creates, connects and configures the 
    // socket and CFDP library. 
    if (InitToolkitCfdp(pathname) == SUCCESS)
    {
        if (GetDisplayMessageMask(&message_mask) != SUCCESS)
        {
            printf("Error    Failed to GetDisplayMessageMask.\n");
        }

        // Register the CFDPDeviceData callback function after initialization
        // since the CFDPDevice does not exist prior to initialization and 
        // this function would fail. 
        if (RegisterCFDPDeviceData(&DeviceData) != SUCCESS)
        {
            printf("Error    Failed to RegisterCFDPDeviceData.\n");
        }

        // Create a 3MB data file.  
        if (InitExampleDataFiles(pathname3MB,
                                 destination_pathname3MB) != SUCCESS)
        {
            printf("Error    Failed to InitExampleDataFiles.\n");
            DSCleanUp();
            return 0;
        }

        // Example 1 code using the GetComponentCFDP function.  
        // Calls the MonitorTransactions example function to the monitor 
        // CFDP transaction using the GetCFDPStructArray function. 

        printf("\nGet Example 1\n\n");
        // Initialize the destination eid 
        eid = 100;
        // Copy the 3MB file to the current directory with the time tag 
        // appended to the file name. 
        if (GetComponentCFDP(pathname3MB,
                             destination_pathname3MB,
                             eid,
                             CFDP_CLASS_2) == SUCCESS)
        {
            timeout_in_sec = 30;
            transaction_count = 1;
            // NOTE: The cfdp config file "support_cfdp_status_requests"
            // parameter must be "true" to support transaction status 
            // monitoring.
            if (MonitorTransactions(timeout_in_sec,
                                    transaction_count) != SUCCESS)
            {
                printf("Error    Failed to MonitorTransactions.\n");
                // Remove orginal data file.
                remove(pathname3MB);
                DSCleanUp();
                return 0;
            }
        }
        else
        {
            printf("Error    Failed 3Mb GetComponentCFDP.\n");
            // Remove orginal data file.
            remove(pathname3MB);
            DSCleanUp();
            return 0;
        }
        // Remove orginal data file 
        remove(pathname3MB);
    }  // end if (InitToolkitCfdp(pathname) == SUCCESS) 
    // Sleep 1 second prior to exiting.
    #ifdef __linux__
    sleep(1);
    #else
    Sleep(1000);
    #endif
    DSCleanUp();
    return 0;
}