lcg-scp.c

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/* lcg-scp.c - Secure copy from Grid to User Interface
 * ====================================================================
 * Copyright (c) Giordano Scuderi, Unico SRL.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by Giordano Scuderi
 *    for Unico SRL"
 *
 * 4. The names "Secure Storage" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    gscuderi@unicosrl.it.
 *
 * 5. Products derived from this software may not be called "Secure Storage"
 *    nor may "Secure Storage" appear in their names without prior written
 *    permission of Giordano Scuderi (Unico SRL).
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by Giordano Scuderi
 *    for Unico SRL"
 *
 * THIS SOFTWARE IS PROVIDED BY UNICO SRL ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL UNICO SRL OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 * 
 */

#ifdef __cplusplus
extern "C" {
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <getopt.h>
#include <stdlib.h>
#include <fcntl.h>
#if defined(_WIN32)
#include <io.h>
#else
#include <unistd.h>
#endif
#include <sys/mman.h>
#include <dlfcn.h>
#include "lcg-scp.h"
#include "securestorage.h"

#ifdef __cplusplus
} /* closing brace for extern "C" */
#endif

/* Flag set by --verbose and --insecure */
int insecure, verbose;

extern int errno;

/* Print help screen and exit */
void usage(FILE *out) {
        fprintf ( out, "%s Version %s\n", PROGRAMNAME, PROGRAMVERSION);
        fprintf ( out, "By %s for %s.\n",AUTHOR, COMPANY);
        fprintf ( out, "\nUsage: %s [--vo vo] [-v | --verbose] [-h | --help] [-i | --insecure]\n", PROGRAMNAME);
        fprintf ( out, "\t[--config config_file]  <src_lfn> <dest_file>\n");
        if (out == stdout)
                exit(0);
        else
                exit(1);        
}

/* MAIN */
int main (int argc, char *argv[]) {
        
        // Variable definition
        char *vo= NULL;
        char *sourcefile=NULL;
        char destfile[MAXPATHLENGTH];
        int flag;
        size_t inv;
        char *conf_file = NULL;
        insecure=0;
        verbose=0;
        // Valid character
        const char *accept_vo=" abcdefghilmnopqrstuvzwyxkjABCDEFGHILMNOPQRSTUVZWYXKJ0123456789-";
        const char *accept_lfn=" abcdefghilmnopqrstuvzwyxkjABCDEFGHILMNOPQRSTUVZWYXKJ0123456789.:_/-";
        
        // Input parameter parsing
        static struct option longopts[] ={
                { "vo", required_argument, 0, 'V'  },
                { "verbose", no_argument, &verbose, 1 },
                { "help", no_argument, 0, 'H' },
                { "config", required_argument, 0, 'C' },
                { "insecure", no_argument, &insecure, 1 },
                {0, 0, 0, 0}
        };
        while ((flag = getopt_long (argc, argv, "hvi", longopts, NULL)) != EOF) {
                switch (flag) {
                        case 'h':
                                usage(stdout);
                                break;
                        case 'H':
                                usage(stdout);
                                break;
                        case 'V':
                                vo=optarg;
                                break;
                        case 'v':
                                verbose=1;
                                break;
                        case 'i':
                                insecure = 1;
                                break;
                        case 'C':
                                conf_file=optarg;
                                break;
                        default:
                                break;
                }
        }
        
        if (optind+1 >= argc) {
                usage(stderr);
        }
        // Verify if --vo flag was specified or exist Environment variable LCG_GFAL_VO
        if (vo == NULL){
                vo = getenv(VO);
                if (!vo) {
                        fprintf(stderr, "VO not specified and environment variable LCG_GFAL_VO not set.\n");
                        exit(1);
                }
        }
        
        if (strlen(argv[optind]) > MAXPATHLENGTH) {
                fprintf(stderr, "The source file path is too long!\n");
                exit(1);
        }
        sourcefile=argv[optind];
        strcpy(destfile,argv[optind+1]);
        
        if (sourcefile==NULL) {
                fprintf(stderr, "You must specify source lfn!\n");
                exit(1);
        }
        if(destfile==NULL) {
                fprintf(stderr, "You must specify destination file!\n");
                exit(1);
        }
        // Verify length of destination lfn
        if (strlen (sourcefile) + 1 > LCG_MAXPATHLEN) {
                fprintf (stderr, "Invalid lfn : %s \n", sourcefile);
                exit(1);
        }
        // Input parameters filter
        inv=0;
        inv = strspn(vo, accept_vo);
        if (inv != strlen(vo) ) {
                fprintf(stderr,"Invalid character on VO parameter.\n");
                exit(1);
        }       
        inv=0;
        inv = strspn(sourcefile, accept_lfn);
        if (inv != strlen(sourcefile) ) {
                fprintf(stderr,"Invalid character on Source File parameter.\n");
                exit(1);
        }       
        
        //Call lcg_scp from secure storage Library
        if ( lcg_scp(sourcefile,destfile,vo,conf_file,insecure,verbose) < 0 ) {
                int errno_save = errno;
                fprintf(stderr, "%s\n", securestorage_error(errno_save));
                exit(1);
        }
        
        exit(0);
}

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